• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Method for providing a predetermined number of contiguous stored elements forming a row, device for carrying out said procedure, and combination weigher comprising said device. Procedure for providing a predetermined number of elements (a, b, c, d, e, f, g) stored contiguous, that is touching, and in a row (2) in a feed channel (3) through which the row (2), said elements being essentially spheroidal, such as fruits, and the first element (a) of the row (2) being initially held by a retaining means (4), comprising the operation of counting by emission and detection of a beam (6) luminous fixed the signal variations produced in said detection by the advance of the row (2), in particular by the passage of the spaces between two elements followed by the row (2) through the beam ( 6) of detection, directing the beam (6) to the interstices (7) that necessarily will be formed in the row (2) between two elements followed although they are contiguous by the effect that said elements (a, b, c, d, e, f, g) are spheroidal. (Machine-translation by Google Translate, not legally binding)
    公开号:ES2611059A1
    申请号:ES201531566
    申请日:2015-11-02
    公开日:2017-05-04
    发明作者:Ezequiel Giro Amigo
    申请人:Girnet Internacional SL；
    IPC主号:
    专利说明:

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    DESCRIPTION
    Procedure for providing a predetermined number of adjacent stored elements forming a row, device for carrying out said procedure, and combination weighing machine comprising said device.
    Technical sector of the invention
    The invention relates to a process for providing a predetermined number of adjacent stored elements forming a row, particularly suitable for fruit and vegetable products, such as oranges, apples, tangerines, etc. The invention also relates to a device for carrying out said method, and to a combination weighing machine comprising said device.
    Background of the invention
    In the field of packaging of fruit and vegetable products combination weighers are known that comprise two transmissions of parallel chains between which there are cars that are attached to the chains so that the coordinated movement of these in the same direction prints the cars a movement along a closed path. Containers are attached to these cars and the machines comprise a series of work stations distributed along the trajectory that the cars follow, and therefore the containers subject to the cars, such as a loading station where they are poured for example fruits in the containers; a weighing station in which the fruit content in each container is weighed; and an emptying or unloading station in which the containers are emptied.
    In the so-called combination machines, several containers are attached to the same carriage, each carriage defining a row of containers, and in the emptying station those containers subject to the same carriage or to different cars whose sum of weights in fruits are selectively emptied is closer to a predetermined value.
    The loading station conventionally comprises a series of inclined channels suitable for receiving the fruit, so that in each channel the pieces of fruit are arranged contiguously and aligned forming a row moving due to gravity until they fall into the containers . These types of channels usually include a means of
    vibration to help the pieces move more easily.
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    In each container, the introduction of a predetermined number of pieces of fruit from said feeding channels is foreseen, which will vary depending on the type of fruit to be treated and the total weight to be packaged. To this end, counting devices are known that allow counting the pieces of fruit during their introduction in the containers and also, once the container has been loaded with a required number of pieces of fruit, it is capable of generating a signal to means of retention planned to momentarily stop the advance of pieces of fruit in the channel until another empty container is placed under the exit of said channel for the next load, and so on.
    A known type of device for counting fruit pieces is based on the utilization of mechanical means, such as switches that by contact are pressed by the pieces of fruit as they pass over them.
    It is also known another type of counting devices that use photoelectric cells that emit a light beam that is interrupted by the passage of the pieces of fruit, that is to say that the counting is carried out when the beam detects the passage of a piece.
    By way of example, in the Spanish utility model ES258970 a counting device is described comprising three photoelectric cells, each housed on a vibrating channel, with their respective reflection mirrors, the channels being inclined so that the pieces of fruit distributed in a row fall by gravity into a receiving hopper. The light beams of the cells are interrupted by the passage of each of the pieces of fruit when they have left the channels and fall into the hopper, thus counting the units received in the hopper.
    This type of device has the disadvantage that it is not suitable for counting pieces of fruit when they circulate on the canal, since when the pieces are forming a row contiguously, that is, touching each other, it could happen that the beam detects two or more pieces of contiguous fruit as if it were a single object, so the beam will not be interrupted with the consequent error in counting. Consequently, this device is only suitable for counting the pieces of fruit when they have left the canal, that is to say when they fall by gravity on the reception hopper, since during the run of the broth it is when a certain separation between pieces of fruit is generated .
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    It would be desirable to have a supply device with counting means capable of detecting the passage of pieces of fruit when they still circulate in the canal although they are forming a row contiguously with each other, that is, without separation between pieces of fruit during their displacement over the channel.
    Unlike the known solutions that are able to report the number of pieces that are supplied, because the counting is done when the pieces leave the channel, by means of a supply device capable of counting when the pieces are still in the channel will be It is possible to control the exact number of parts that are supplied and are turned over to an associated container.
    On the other hand, retaining devices are known to interrupt the supply of fruit when a container has been loaded with a predetermined number of pieces of fruit. These types of devices use folding blades, each associated with the end of a channel, which interfere with the trajectory of the pieces of fruit. By way of example, the Spanish utility model ES258916 describes a device of this type comprising a series of tilting vanes articulated to a transmission mechanism that allows a particular pallet to descend to retain the piece of fruit in the channel, or that rise to allow the circulation of fruit pieces.
    This retaining device has the disadvantage that although the maximum rotation of the vanes is adjustable, not all the pieces have equal dimensions so that the larger-sized fruit pieces can be pressed excessively when the vane comes into contact to stop its passage .
    It would also be desirable to have a delivery device capable of interrupting the supply of fruit in cooperation with the counting means prepared to carry out the retention operation in an improved manner, which ensures smooth contact with the fruit pieces to avoid possible damage to the same.
    Explanation of the invention
    In order to provide a solution to the problems raised, a procedure for providing a predetermined number of contiguous stored elements is disclosed, that is touching, and in a row in a feed channel through which it can advance
    the row, said elements being essentially spheroidal, such as fruits, and being
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    initially the first element of the row retained by retention means that prevent the sliding and advancing of the row, the procedure comprising the operations of:
    a) act the retention means to stop retaining the first element of the row allowing the row to advance through the channel,
    b) by means of the emission and detection of a fixed light beam, to count the signal variations produced in said detection by the advance of the row, in particular by the passage of the spaces existing between two elements followed by the row through the beam of detection, directing the beam towards the interstices that will necessarily form in the row between two elements in a row even if they are contiguous because these elements are spheroid, and
    c) when the signal variations reach a number equal to the predetermined number of elements to be provided, act again withholding means to retain the new first element of the row.
    Therefore, a device capable of counting a predetermined number of spheroidal elements arranged contiguously forming a row and movable along a channel is obtained, by using detection means provided with a light beam that detects the passage of the existing interstices between each two elements, so that when the predetermined number of elements has been provided, for example to a receiving container located at the exit of the channel, a signal is sent to retention means that carry out the interruption momentary supply of elements.
    In this way, thanks to the fact that the light beam detects the passage of the existing gap between each two contiguous spheroid elements on the channel, a fast and reliable counting of said elements is guaranteed, contrary to how it occurs with the devices known in the state of the technique which were not suitable for counting contiguous elements since the light beam detected the passage of the element itself, therefore there must be a certain separation between them to avoid counting errors.
    Advantageously, the operation of counting the signal variations is performed by counting the intensity variations of the detection beam. In this sense, during the beam detection step, each time a decrease in the intensity of the reflected beam is detected, below a predetermined threshold and then an increase in the
    intensity of the reflected beam above a predetermined threshold, a space is counted.
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    Therefore, the decrease in the intensity of the reflected beam occurs when the beam travels a greater length, in this case when passing through an interstitium between two contiguous elements contacting in a channel wall, while the intensity increase occurs when the light beam contacts the surface of one of the elements.
    Advantageously, the same procedure is suitable for counting even when the elements that pass through the light beam are not contiguous and are momentarily separated, but it guarantees the correct count when the elements followed by the row are contiguous.
    Thus, when said first element is released and advances so that the light beam detects the gap between this first element and the next in the row, an element is counted, and so on until a predetermined number of elements is reached. provided, at which time the retention means act on the next element stopping the advance of the row.
    According to another aspect, the invention also refers to a device capable of providing a predetermined number of adjacent stored elements forming a row, that is touching, comprising:
    - a feeding channel through which the row can advance by gravity, said elements being essentially spheroidal, such as fruits;
    - retaining means operable by a motor and adapted to retain the first element of the row and prevent the sliding and advancing of the row, and to stop retaining the first element of the row allowing the row to advance through the channel; Y
    - means for emitting and detecting a fixed light beam directed towards the channel, adapted to count the signal variations produced in said beam by the advance of the row, in particular by the passage of the spaces existing between two elements followed by the row through the detection beam, the beam being directed towards the interstices that will necessarily form in the row between two elements in a row although these are contiguous due to the fact that said elements are spheroidal, and adapted to act the retention means to stop retain the first element of the row and act again the retention means to retain the next element of the row when the signal variations reach a number equal to the predetermined number of elements to be provided.
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    Similarly, the emission and detection means are adapted to count the intensity variations of the detection beam. In this sense, the emission and detection means are adapted to count a space that during the beam detection step, each time a decrease in the intensity of the reflected beam is detected, below a predetermined threshold and then an increase in the intensity of the reflected beam above a predetermined threshold, a space is counted.
    According to a preferred embodiment, the feed channel has a 'V' shaped cross section that determines two walls joined by a lower vertex, the detection beam being directed adjacent to one of the walls to influence the other wall in a point at a predetermined distance from the lower vertex.
    The invention contemplates that said distance between the point of incidence of the detection beam and the lower vertex of the channel is between 0.1 and 30 millimeters. According to a preferred embodiment, the detection beam is parallel to said first channel wall. Preferably the distance of separation of the beam to said first wall of the channel is from 0.1 to 30 mm; more preferably from 0.1 to 20 mm; still more preferably 3 to 5 mm; and in an embodiment of interest this distance is 4 mm.
    Thus, regardless of the size of the elements, the detection beam will always be able to detect the gap between each two spheroid elements thanks to the fact that the point of incidence of the detection beam is focused on a lower area of the channel.
    Advantageously, the point of incidence of the detection beam is arranged upstream of the retention means. In this way, it is guaranteed that when the predetermined number of elements has been provided, the retention means can act immediately to retain the next element, which becomes the first element in the row to begin a new sequence.
    Preferably, the retention means comprise a clamp provided with a flexible finger capable of adapting to the contour of the first element of the row. For example, the use of adaptive tweezers such as those using Fin Ray Effect® technology is envisaged.
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    According to a preferred embodiment, the clamp is mounted at the end of a tilting support that is actuated by a crank-crank mechanism, the crank being articulated by one end to the tilting support at a point close to the clamp and by its other end to the connecting rod, and said connecting rod being driven by the motor, preferably electric, so that when the motor rotates in one direction the clamp is capable of being raised allowing the advance of the row of elements through the channel and when the motor rotates in In the opposite direction the clamp is capable of descending until it comes into contact with the first element of the row for retention in the channel.
    This configuration allows obtaining a structurally simple and very compact transmission mechanism, transmitting the movement of the torque to the caliper precisely.
    Advantageously, the motor is a motor with torque control, whose torque calibration depends on the size of the elements supplied in the channel, and allows the motor to stop during a retention maneuver when the resistance torque exceeds a previously calibrated value, thus avoiding damaging the fruit.
    According to another feature of the device, the inclination of the channel is greater than 4 °. Preferably, the inclination of the channel is 8 °.
    The device of the invention guarantees greater speed and precision in the counting of the elements arranged in the channel, contrary to the case with the channels known in the state of the art, and consequently allows the selection of a channel inclination and a amplitude of vibration thereof outside the conventional ranges.
    According to another feature of the device, the channel is provided with vibration means. Said vibration means favor the displacement of the row of adjacent elements along the channel, avoiding possible jams.
    Preferably, the vibration means are adapted to confer a vibration of at least 5 millimeters in amplitude with a frequency greater than 40 Hz. These vibration parameters allow to optimize the speed in the movement of the row of adjacent elements along the channel.
    According to another aspect, the invention also relates to a weighing machine of
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    combination comprising a plurality of devices as described above, said machine provided with control means adapted to indicate to each device the number of elements to be provided to a container into which its channel flows.
    Advantageously, every two devices provide elements to the same container. In this way, it is possible to double the number of elements provided in the same container, and therefore optimize the production time of the machine.
    Preferably, said devices are arranged in a loading station arranged above a closed path transport system for the continuous movement of the containers.
    Brief description of the drawings
    The attached drawings illustrate, by way of non-limiting example, a preferred embodiment of the device capable of providing a predetermined number of pieces of fruit, in this example oranges, stored adjoining forming a row, and of a combination weighing machine which comprises said devices. In said drawings: Fig. 1 is a perspective view of the device for providing a predetermined number of adjacent stored oranges forming a row; Fig. 2a is a schematic cross-sectional view of the feed channel showing the detection beam affecting the wall of the channel having crossed the gap between two adjacent oranges;
    Fig. 2b is a schematic cross-sectional view of the feed channel showing the detection beam directly affecting an orange; Fig. 2c is a schematic view of the effect that is achieved by directing the light beam to the optimum zone regardless of the size of the oranges;
    Fig. 3a to Fig 3g show respectively the sequence of the count of oranges provided by the device object of the invention as the row of adjacent oranges advances along the channel, indicating the point of incidence of the detection light beam and also showing a graph of the intensity variations detected by the light beam;
    Fig. 4 is a perspective view of the retention means showing the clamp transmission mechanism;
    Fig. 5 is a perspective view of a combination weighing machine that
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    it comprises a plurality of said devices object of the invention; Y
    Fig. 6 is a perspective view of an embodiment with two devices object of the
    invention that provide elements to the same container.
    Detailed description of the drawings
    Figure 1 shows a device 1 to provide a predetermined number of elements A, B, C, D, E, F, G, stored adjoining forming a row 2, that is touching, which comprises a feed channel 3 by the that row 2 can advance by gravity, said elements A, B, C, D, E, F, G being essentially spheroid, being oranges in this example; retention means 4 adapted to retain the first element A of row 2 and prevent the sliding and advancing of row 2, and to stop retaining the first element A of row 2 allowing row 2 to advance through channel 3 ; and emission and detection means 5 of a fixed light beam 6 directed towards the channel 3 adapted to count the variations of the intensity signal (I) of the detection beam 6, as will be explained later.
    The procedure carried out by the device 1 to provide a predetermined number of oranges A, B, C, D, E, F, G comprises the operations of:
    a) act on retaining means 4 to stop retaining the first orange A of row 2 allowing row 2 to advance through channel 3,
    b) by means of the emission and detection of a fixed light beam 6, count the signal variations produced in said detection by the advance of row 2, in particular by the passage of the spaces between two oranges followed by row 2 through of the detection beam 6, directing the beam 6 towards the interstices 7 that will necessarily form in row 2 between two oranges in a row although these are contiguous due to the fact that said oranges A, B, C, D, E, F, G are spheroids, and
    c) when the signal variations reach a number equal to the predetermined number of oranges that it is desired to provide, for example three oranges A, B, C, act again on the retaining means 4 to retain the new first orange D of row 2 .
    In Figures 2a, 2b it can be seen that the feed channel 3 has a cross section in the form of 'V' that determines two walls 3a, 3b joined by a lower vertex 3c, the detection beam 6 being directed adjacent to one of the walls 3a to influence
    the other wall 3b at a point at a predetermined distance z from the vertex
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    lower 3c. In the illustrated embodiment, it can be seen that the detection beam 6 is parallel to said first wall 3a of the channel 3. Also, in that example, the distance z between the point of incidence of the detection beam 6 and the lower vertex 3c is of 4 millimeters and the angle formed between both walls 3a and 3b is 90 degrees.
    Thus, regardless of the size of the oranges, the detection beam 6 will be able to detect the gap 7 between each two adjacent oranges because the point of incidence of the detection beam 6 is focused on a lower zone of the channel 3, such and as it is intended to illustrate in a schematic way figure 2c, in which two superimposed rows of oranges of different sizes have been illustrated. In this example, it can be seen that the detection beam 6 makes it possible to detect the gap 7 that will necessarily form between two adjacent oranges, both in the row of oranges A, B of larger size, and in the row of oranges a, b, c of smaller size.
    Each time a decrease in the intensity (I) of the reflected beam 6 is detected, below a predetermined threshold (Ith) and then an increase in the intensity (I) of the reflected beam above a predetermined threshold (Ith), A space is counted. That is, the decrease in intensity (I) of the reflected beam 6 occurs when the beam 6 travels a greater length, in this case when passing through a gap 7 between two adjacent oranges A, B contacting a wall 3b of the channel 3 (see figure 2a), while the intensity increase (I) occurs when the light beam 3 contacts on the surface of one of the oranges B (see figure 2b).
    In one embodiment, the detection beam 6 is a laser beam. Specifically, there is a laser photocell with a built-in amplifier. In one example the diameter of the light spot is 0.5 mm. The implementation of the invention has been favorable using for example a laser photocell with built-in amplifier model E3Z marketed by Omron.
    A sequence of the count of oranges A, B, C, D, E, F, G provided by device 1 is shown in Figures 3a to 3g as row 2 of adjacent oranges advances through channel 3, indicating the point of incidence of the light beam 6, and also showing a graph of the intensity variations (I) detected by the light beam 6.
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    In the example shown, it is considered that the predetermined number of oranges to be provided is three oranges A, B, C.
    Figure 3a shows the initial moment in which the first orange A of row 2 being retained by the retaining means 4, the detection beam 6 affects said first orange A. In the graph it can be seen that a intensity value (I) greater than the predetermined threshold value (Ith).
    Figure 3b shows the moment when said first orange A is released by the retaining means 4, and begins to advance on the channel 3 so that the light beam 6 detects the gap 7 between this first orange A and the second orange B contiguous in row 2. The graph shows how the intensity value (I) detected is currently below the predetermined threshold value (Ith).
    Figure 3c shows the moment when row 2 continues to advance so that the light beam 6 detects the second orange B of row 2. At this moment, the graph shows again an intensity value (I) greater than default threshold value (Ith).
    Consequently, the detection means 5 have a first space since, as mentioned above, each time a decrease in the intensity (I) of the reflected beam 6 is detected, below a predetermined threshold (Ith) and then an increase in the intensity (I) of the reflected beam above a predetermined threshold (Ith), a space is counted. Therefore, this first posted space indicates that the device has provided a first orange A.
    Figure 3d shows the moment when row 2 continues advancing so that the light beam 6 detects the gap 7 between the second orange B and the third orange C contiguous in row 2. The graph shows how the intensity value (I) detected is again lower than the predetermined threshold value (Ith).
    Figure 3e shows the moment when row 2 continues to advance so that the light beam 6 detects the third orange C of row 2. At this moment, the graph shows again an intensity value (I) greater than default threshold value (Ith). As a result, the detection means 5 have a second space, which indicates that the
    device has provided two oranges A and B.
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    Figure 3f shows the moment in which row 2 continues to advance so that the light beam 6 detects the gap 7 between the third orange C and the fourth orange D contiguous in row 2. The graph shows how the intensity value (I) detected is again lower than the predetermined threshold value (Ith).
    Figure 3g shows the moment when row 2 continues to advance so that the light beam 6 detects the fourth orange D of row 2. At this moment, the graph shows again an intensity value (I) greater than default threshold value (Ith). As a result, the detection means 5 have a third space, which indicates that the device has provided three oranges A, B and C.
    Also, because the predetermined number of oranges has already been reached, three oranges in this example, it can be seen that the retention means 4 return to act stopping the passage of the fourth orange D and therefore interrupting the advance of the row 2.
    On the other hand, it should be noted that the point of incidence of the detection beam 6 is arranged in this example upstream of the retention means 4. This way, it is guaranteed that when the predetermined number of oranges have been provided, the means of Retention 4 can act immediately to retain the next orange, which becomes the new first orange in row 2 to begin a new sequence.
    Referring to Figures 1 and 4, the retaining means 4 comprise a clamp 8 provided with flexible fingers capable of adapting to the contour of the first orange A of row 2. In particular, the use of a clamp with technology is envisaged. Ray Effect® or similar that allows flexible grip of objects of different shapes.
    According to a preferred embodiment, the clamp 8 is mounted at the end of a tilting support 9 which is actuated by a crank-crank mechanism, the crank 10 being articulated by one end to the tilting support 9 at a point close to the clamp 8 and at its other end to the connecting rod 11, and said connecting rod 11 being driven by an electric motor 12, so that when the motor 12 rotates in one direction the clamp 8 is capable of being raised allowing the advance of row 2 of oranges A, B, C, D, E, F, G through channel 3 and when the motor 12 rotates in the reverse direction the clamp 8 is capable of descending to
    contact the first orange A in row 2 for retention on channel 3.
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    The motor 12 is a motor with torque control and capable of regulating the lifting and lowering paths of the clamp 8, whose stroke will depend on the size of the oranges A, B, C, D, E, F, G supplied in the channel 3
    To carry out an initial calibration of the motor, it must be taken into account that the initial work point corresponds with the fingers of the clamp 8 touching the channel 3, therefore in the lowest position. Then, the first rise of the clamp 8 is made according to a rotation angle of 9 °. If the first orange A passes under clamp 8, the duty cycle will continue, otherwise the clamp will be raised 9 ° more and so until the first orange A passes without interruption. The time that clamp 8 is up is the time it takes for the predetermined number of oranges to be provided to pass.
    Then the first descent of the clamp 8 is carried out until it finds an orange, controlled by the detection by the motor 12 of the maximum torque set. On the second rise of the clamp 8, it rises again 9 ° with respect to the previous position. Similarly, the time that clamp 8 is up is the time needed to pass the predetermined number of oranges to be provided.
    Then, the second descent of the clamp 8 is carried out until it finds an orange, in the same way as in the first descent, and in this way the work cycles are repeated successively.
    On the other hand, channel 3 has an inclination greater than 4 ° to guarantee an appropriate speed in the movement of row 2 of adjacent oranges A, B, C, D, E, F, G along channel 3, taking The advantage of counting these oranges can be done very quickly and efficiently. It has been proven that the optimum inclination value is 8 °.
    Also, as can be seen in Figure 1, the channel 3 is provided with vibration means 13 to favor the displacement of the row 2 of adjacent oranges A, B, C, D, E, F, G along of channel 3, avoiding possible traffic jams. Said vibration means 13 are adapted to confer a vibration of at least 5 millimeters in amplitude with a frequency greater than 40 Hz, which allows to optimize the speed in the movement of row 2 of adjacent oranges A, B, C, D, E, F, G along channel 3.
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    Referring now to Figure 5, the invention also relates to a combination weighing machine 20 comprising a plurality of said devices 1 for providing fruit and vegetable products, such as oranges in this example, said machine state 20 provided with control means 21 adapted to, among other parameters, indicate the number of oranges that should be provided to a container 22.
    The machine 20 also comprises a transport system that continuously moves a series of carriages 23 along a closed path that comprises an upper straight section, a lower straight section, and two curved connecting sections between said upper sections and lower, so that each carriage 23 holds several containers 22. In addition, it includes a series of work stations distributed along the path followed by the containers 22, in particular, a charging station 24 of oranges A, B, C , D, E, F, G to provide in the containers 22, a weighing station 25 of the containers 22 arranged in the upper straight section of the path followed by the carriages 23, and a selective unloading station 26 (not visible in Figure 5) of the oranges loaded in the containers 22 arranged in the lower straight section. Also, the control means 21 processes the weighing data and selects those containers 22 whose sum of weights is closer to a predetermined value for unloading.
    According to the embodiment shown in Figure 5, the placement of two devices 1 linked to the same container 22 is foreseen. In this way, it is possible to double the number of oranges provided in the same container 22, and therefore optimize the production time of machine 20.
    Figure 6 illustrates in a more schematic way this particular arrangement of the devices 1 in the machine 20, in particular to be able to supply products to the same container 22 using two channels 3, each associated with means of emission and detection 5 of the beam 6 bright and a means of retention 4.
    权利要求:
    Claims (21)
    [1]
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    1. Procedure to provide a predetermined number of elements (A, B, C, D, E, F, G) stored adjoining, that is touching, and in a row (2) in a feed channel (3) by which you can advancing the row (2), said elements being essentially spheroidal, such as fruits, and initially being the first element (A) of the row (2) retained by retention means (4) that prevent the sliding and advancing of the row (2), the procedure comprising the operations of:
    a) act the retention means (4) to stop retaining the first element (A) of the row (2) allowing the row (2) to advance through the channel (3),
    b) by means of the emission and detection of a fixed light beam (6), to count the signal variations produced in said detection by the advance of the row (2), in particular by the passage of the existing spaces between two elements followed by the row (2) through the detection beam, directing the beam towards the interstices (7) that will necessarily form in the row (2) between two elements in a row even if they are contiguous due to the fact that said elements (A, B, C , D, E, F, G) are spheroid, and
    c) when the signal variations reach a number equal to the predetermined number of elements (A, B, C) that it is desired to provide, act again the retention means (4) to retain the new first element (D) of the row (2).
    [2]
    2. Method according to the preceding claim, characterized in that the operation of counting the signal variations is performed by counting the intensity variations (I) of the detection beam (6).
    [3]
    3. Method according to the preceding claim, characterized in that during the detection step of the beam (6), each time a decrease in the intensity (I) of the reflected beam (6) is detected, below a threshold (Ith) predetermined and then an increase in the intensity (I) of the beam (6) reflected above a predetermined threshold (Ith), a space is counted.
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    [4]
    4. Device (1) capable of providing a predetermined number of elements (A, B, C, D, E, F, G) stored adjoining forming a row (2), that is touching, comprising:
    - a feed channel (3) through which the row (2) can advance, said elements (A, B, C, D, E, F, G) being essentially spheroidal, such as fruits;
    - retention means (4), operable by a motor (12), adapted to retain the first element (A) of the row (2) and prevent the sliding and advancing of the row (2), and to stop retaining the first element (A) of row (2) allowing row (2) to advance through the channel (3); Y
    - emission and detection means (5) of a fixed light beam (6) directed towards the channel (3), adapted to count the signal variations produced in said beam (6) by the advance of the row (2), in particular by the passage of the spaces between two elements followed by the row (2) through the detection beam (6), the beam (6) being directed towards the interstices (7) that will necessarily form in the row ( 2) between two elements in a row although these are contiguous due to the fact that said elements (A, B, C, D, E, F, G) are spheroidal, and adapted to act with the retention means (4) to stop retaining the first element (A) of row (2) and act again the retention means (4) to retain the next element (D) of row (2) when the signal variations reach a number equal to the predetermined number of elements (A, B, C) that you want to provide.
    [5]
    5. Device (1) according to the preceding claim, characterized in that the emission and detection means (5) are adapted to count the intensity variations (I) of the detection beam (6).
    [6]
    6. Device (1) according to the preceding claim, characterized in that the emission and detection means (5) are adapted to count a space that during the beam detection step (6), each time a decrease in intensity is detected (I) of the reflected beam (6), below a predetermined threshold (Ith) and then an increase in the intensity (I) of the beam (6) reflected above a predetermined threshold (Ith), a space is counted.
    5
    10
    fifteen
    twenty
    25
    30
    35
    [7]
    Device (1) according to any one of claims 4 to 6, characterized in that the feed channel (3) has a cross section in the form of 'V' that determines two walls (3a, 3b) joined by a lower vertex (3c), the detection beam (6) being directed adjacent to one of the walls (3a) to influence the other wall (3b) at a point at a predetermined distance (z) with respect to the lower vertex (3c).
    [8]
    Device (1) according to the preceding claim, characterized in that said distance (z) between the point of incidence of the detection beam (6) and the lower vertex (3c) of the channel (3) is between 0.1 and 30 millimeters
    [9]
    9. Device (1) according to the preceding claim, characterized in that the detection beam (6) is parallel to said first wall (3a) of the channel (3).
    [10]
    Device (1) according to claims 8 or 9, characterized in that the distance (z) or in its case the distance of separation of the beam with respect to said first side wall (3a) of the channel (3) is 3 to 5 mm
    [11]
    Device (1) according to any one of claims 4 to 10, characterized in that the point of incidence of the detection beam (6) is arranged upstream of the retention means (4).
    [12]
    12. Device (1) according to any one of claims 4 to 11, characterized in that the retaining means (4) comprise a flexible clamp (8) capable of adapting to the contour of the first element (A) of the row (2) .
    [13]
    13. Device (1) according to the preceding claim, characterized in that the clamp (8) is mounted on the end of a tilting support (9) that is actuated by a crank-crank mechanism, the crank (10) being articulated by one end to the tilting support (9) at a point close to the clamp (8) and at its other end to the connecting rod (11), and said connecting rod (11) being driven by the motor (12), so that when the motor (12) rotates in one direction the clamp (8) is capable of being raised allowing the advance of the row (2) of elements (A, B, C, D, E, F, G) through the channel (3) and when the motor (12) rotates in the opposite direction the clamp (8) is capable of descending until it comes into contact with the first element (A) of the row (2) for its
    5
    10
    fifteen
    twenty
    25
    30
    35
    retention in the channel (3).
    [14]
    14. Device (1) according to any one of claims 4 to 13, characterized in that the motor (12) is a motor with torque control, whose torque calibration depends on the size of the elements (A, B, C, D , E, F, G) supplied in the channel (3), and allows the motor (12) to stop during a retention maneuver when the resistance torque exceeds a previously calibrated value.
    [15]
    15. Device (1) according to any one of claims 4 to 14, characterized in that the inclination of the channel (3) is greater than 4 °.
    [16]
    16. Device (1) according to the preceding claim, characterized in that the inclination of the channel (3) is 8 °.
    [17]
    17. Device (1) according to any one of claims 4 to 16, characterized in that the channel (3) is provided with vibration means (13).
    [18]
    18. Device (1) according to the preceding claim, characterized in that the vibration means (13) are adapted to confer a vibration of at least 5 millimeters in amplitude with a frequency greater than 40 Hz.
    [19]
    19. Combination weighing machine (20) comprising a plurality of devices (1) according to any one of the preceding device claims, said machine state (20) provided with control means (21) adapted to indicate each device ( 1) the number of elements (A, B, C, D, E, F, G) that you must provide to a container (22) in which your channel (3) ends.
    [20]
    20. Machine (20) according to the preceding claim, characterized in that every two devices (1) provide elements to the same container (22).
    [21]
    21. Machine (20) according to claims 19 or 20, characterized in that said devices (1) are arranged in a loading station (24) arranged above a closed path transport system for the continuous movement of the containers (22 ).
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    同族专利:
    公开号 | 公开日
    US10295398B2|2019-05-21|
    ES2611059B1|2018-02-08|
    US20170122793A1|2017-05-04|
    EP3170754A2|2017-05-24|
    EP3170754A3|2017-09-13|
    JP2017114681A|2017-06-29|
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    ES201531566A|ES2611059B1|2015-11-02|2015-11-02|Procedure for providing a predetermined number of adjacent stored elements forming a row, device for carrying out said procedure, and combination weighing machine comprising said device|ES201531566A| ES2611059B1|2015-11-02|2015-11-02|Procedure for providing a predetermined number of adjacent stored elements forming a row, device for carrying out said procedure, and combination weighing machine comprising said device|
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    JP2016214128A| JP2017114681A|2015-11-02|2016-11-01|Method for providing predetermined number of contiguous stored element forming line, device for carrying out method, and combination weighing machine comprising device|
    US15/341,134| US10295398B2|2015-11-02|2016-11-02|Method for providing a predetermined number of contiguous stored elements forming a line, device for carrying out said method, and a combination weighing machine comprising said device|
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