• 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:
    The invention relates to a Schiffchenstickmachine. To adjust the width of the car on an embroidery machine is on a along the embroidery machine in the rear carriage (2) extending actuating shaft (9) with it mounted eccentric drums (11) a connecting rod (15) drivable, which acts directly on the shuttle (3) and this in Z Direction moves back and forth. With a half turn of the control shaft (9), the width of the car can be brought from the largest to the minimum distance to the shuttle (5) and there can be adjusted by a rotational movement by a few degrees the shuttle (5) within tenths of millimeters.
    公开号:CH714654A2
    申请号:CH00807/18
    申请日:2018-06-27
    公开日:2019-08-15
    发明作者:Lässer Franz；Lässer Philipp
    申请人:Laesser Ag；
    IPC主号:
    专利说明:

    The invention relates to a shuttle embroidery machine with a device for adjusting and adjusting the carriage width according to the preamble of claim 1.
    Devices for adjusting the carriage width on shuttle embroidery machines are known.
    Adjusting the carriage width on shuttle embroidery machines serves to influence the position of the loop of the needle thread in relation to the tip of the shuttle to ensure that the loop is securely caught with the shuttle. Such a device is known from DE 102009 060603, in which the carriage width, that is to say the distance between the needle plate and the needle tips, is changed in the Z direction, i.e. perpendicular to the embroidery, acting pistons and set screws attached to them can be adjusted. The pistons and set screws are inserted between the shuttle car and the rear car. A common synchronous adjustment of all devices along the embroidery machine and their fixation during embroidery is complex and involves a lot of adjustment work.
    In a further development of the device described above in DE 10 2015 008 625, a central adjustment of the carriage width takes place instead of adjusting screws by means of centrally displaceable wedges which limit the stroke of the adjusting cylinder and thus limit the displacement path of the connections between the shuttle and the needle tips ,
    With such devices, the carriage width can only be set when the embroidery machine is at a standstill, because the force element which holds the rear carriage in position must be switched off for the adjustment. It is therefore not possible to adjust and adjust the carriage width while the machine is running.
    According to the information in DE 10 2015 008 625 (paragraph [0131]), it is only important that a relatively large pressure keeps the connection between the machine frame and the rear carriage closed so that it sufficiently counteracts the process forces.
    This means that the force element that generates the high pressure absorbs these process forces. In order to be able to do this in the exemplary embodiment with an adjusting eccentric, the force element has to load the adjusting eccentric with a high force. In order to be able to make an adjustment, that is to say to rotate the adjusting eccentric, the force of the holding force element must be significantly reduced, since otherwise the holding force between the adjusting eccentric and the stop element cannot be overcome, especially if one imagines that a large number of connections between the rear carriage and the boat cheek are present along the embroidery machine. If the force of the force elements for adjusting the carriage width were reduced while the embroidery machine was running, the entire process force would have to be taken over by the setting eccentrics or the setting shaft. However, this is not possible since, according to the application, it is imperative that a relatively large pressure of the force elements keeps the connection between the machine frame and the rear carriage closed.
    On embroidery machines from Carl Zangs Aktiengesellschaft, actuators were used before 1975, which could be operated centrally with a lever. At that time, Zangs operated the carriage width adjustment on a double-decker embroidery machine with adjusting shafts extending over the entire length of the machine with cranks and crank rods attached to it, which were connected to the shuttle car. This known device makes it possible to set the carriage width very precisely when the embroidery machine is at a standstill. A disadvantage of this device is the effort for locking the set carriage width only after the dead center between the crank and the crank rod has been exceeded, because this locking also had to take place with adjusting nuts. The control shaft would have to be locked in both directions of rotation without exceeding the dead center.
    An object of the present invention is to provide a device which enables the carriage width to be adjusted and adjusted centrally, both when the embroidery machine is at a standstill and at any time during operation.
    Another object is to produce the device simply, inexpensively and with the least possible number of components and without the use of locking and stop means, set screws or other force elements to maintain the set carriage width.
    This object is achieved by a device on an embroidery machine according to the features of claim 1. Advantageous embodiments of the invention are described in the dependent claims.
    With the direct play-free connection according to the invention between the actuating shaft in the rear carriage and the shuttle carriage, the carriage width can be adjusted and adjusted when the machine is at a standstill and in operation without canceling the effect of force elements or adjusting the adjusting screws on stops or when the machine is stopped by returning from a dead center , The retraction of the needle plate with the shuttle tracks from the needle tips and the precise adjustment and adjustment of the carriage width during operation is only possible without adjustment work on the stops by the angle of rotation of the adjusting shaft. The eccentric arrangement of the eccentric drum on the actuating shaft for the connecting rod head with the internal guide ring enables not only the fine adjustment for operation, but also the retraction of the shuttle carriage for changing the embroidery base and while the corrugation base is rippling by a multiple of the working distance with the same device and its drive motor. Through a suitable choice of material for the surface quality of the sliding surface on the eccentric drum and on the guide ring, the shuttle can be held in any position by self-locking without locking means. Acts on the control shaft
    CH 714 654 A2 no torque during operation. Alternatively or additionally, a self-locking of the actuating shaft can be achieved by a suitable choice of the coefficient of friction f on the bearing rings of the actuating shaft.
    As materials for the guideway or its surface on the eccentric drums, guide rings and / or the bearing blocks can plastic materials with a suitable coefficient of friction f, such as PA6.6, POM, PC, PT, PBT, PES, PEEK, PTS, which with effect the appropriate coefficient of friction on the periphery of the eccentric drum. A locking of the actuating shaft by means of actuating means or fixing means is completely eliminated. Nevertheless, by turning the control shaft at any time, i.e. even during operation, on the one hand, the carriage width can be set extremely precisely in the range of tenths of a millimeter and, at the same time, the carriage width can be increased by an approx. 180 ° rotation of the adjusting shaft in such a way that a new embroidery base can be easily inserted. By turning back the adjusting shaft, the desired carriage width, which is suitable for the respective embroidery process, can be set again without adjustment. The setting is carried out in a simple manner by means of a servo motor or another suitable actuating means and, if necessary, a reduction gear inserted between the actuating shaft and the servo motor. Setting values in the range of tenths of a millimeter or less can therefore be reached directly with the machine control. The simple construction of the connecting means between the shuttle and the actuating shaft enables cost-effective production and safe, low-wear, low-maintenance operation.
    [0009] The invention is described in more detail below using only one illustrated exemplary embodiment. It shows:
    1 shows a schematically illustrated cross section through the part of an embroidery machine on the shuttle side,
    1a shows an enlarged cross section through a shuttle, the tap hole plate and the needle immediately after the tip of the shuttle enters the thread loop,
    2 is a perspective view of the cross-sectional area shown in FIG. 1,
    3 is an exploded view of the essential parts of the device for adjusting the carriage width,
    4 shows a side view of the device with the shuttle car closed to the maximum (smallest possible carriage width),
    Fig. 5 is a side view of the device with partially open shuttle and
    Fig. 6 is a side view of the device with the boat car almost completely open.
    In Fig. 1, the support tube of the stationary rear carriage 2 of an embroidery machine is designated by reference numeral 1. Reference number 3 denotes the shuttle car on the rear of the machine and reference number 5 denotes the shuttle tracks on the shuttle car 3. The rear carriage 2 is fixedly connected to the frame of the embroidery machine, not shown, and extends over the entire length of the embroidery machine. The shuttle 3 and shuttle 5 are connected to each other and with respect to the rear carriage 1 in the direction Z, i.e. Slidably mounted in the direction of the axis of the needles 4 and perpendicular to the needle plate 7 and the embroidery base 8.
    On the right side (machine front), the throat plate 7 can be seen, which is at a very small distance d of, for example, 11.4 mm to the needle tip 6. The rear end of the needle 4 is visible to the right of the needle plate 7. The drives for the needles 4 are omitted for the sake of clarity. The same applies to the further drive means accommodated in the rear carriage 2, which are not necessary for understanding the invention.
    In the upper part of the rear carriage 2 is shown hatched a control shaft 9 extending over the length of the embroidery machine and a circular disk arranged thereon in a rotationally fixed manner eccentrically to the axis of rotation A of the control shaft 9 as an eccentric disk or drum 11 with a hardened or ground surface. Pushed onto each of the eccentric drums 11, the head 13 of a connecting rod 15 is axially secured. A guide ring 25 is preferably inserted in the head 13, the bore 25 'of which can slide on the periphery of the eccentric drum 11. Alternatively, a bore could be formed in the head 13 of the connecting rod 15, which receives the eccentric drum 11.
    The connecting rod 15 penetrates the support tube 1 of the rear end 2 and ends at a bearing element 17, which bearing element 17 is pivotally attached to a bearing pin 19. The bearing pin 19 is arranged on the shuttle 3 and connected to it.
    The shuttle 3 is displaceable on horizontally arranged guide elements or rails relative to the rear carriage 2 with the connecting rod 15. The guide rails are not visible.
    The adjusting shaft 9 is rotatably supported about the axis A and is driven by a drive motor, preferably a servo motor. The actuating shaft 9 can be driven at the shaft end on the end face of the embroidery machine or, if it is a very long, for example 30 meter long embroidery machine, drives can also be at several points, e.g. engage at both ends and / or in the center of the control shaft 9 (Fig. 2 and 3).
    In Fig. 1a, the position of the needle 4 is shown enlarged with respect to a shuttle 10 in the shuttle 5 on the side of the needle plate 7. In contrast to the needle 4 in FIG. 1, a thread or a thread loop 12 is also shown in FIG. 1 a, which runs loop-shaped away from the needle eye 16 in the needle 4 away from the needle 4 and from the tip 14
    CH 714 654 A2 of the boat 10 and has been penetrated by the boat 10. The tip 14 of the shuttle 10 thus initially projects between the needle 4 and the thread loop 12.
    The distance d between the surface of the needle plate 7, on which the embroidery base 8 rests, and the tip 6 of the needle 4 influences the size of the thread loop 12. The loop 12 is formed after the needle 4 has already been withdrawn somewhat after the maximum penetration depth during the puncturing process and is clamped in the embroidery base 8 between the needle 4 and the embroidery base 8.
    The distance between the needle plate 7 and the eye 16 of the needle is decisive. For the sake of simplicity and simpler measurement, the distance d from the tip 6 of the needle to the surface of the needle plate 7 is given. It should be noted that the distance between the eye 16 and the tip 6 of the needle 4 is not the same for all types of needles.
    The needle 4 thus penetrates the needle plate 7 and the embroidery base 8 and is briefly withdrawn on its double stroke path running in the Z direction, so that the thread, which is held clamped in the embroidery base 8, forms the thread loop 12, which is then separated from the tip 14 of the shuttle caught and passed through by the boat 10 expanded.
    In order to be able to optimally adjust the exact position of the thread loop 12 and its size before catching with the tip of the shuttle 10 to the thread quality and other parameters, the distance d of the needle tip 6 from the needle plate 7 and thus also on the embroidery machines the distance to the embroidery base 8 is designed to be adjustable. The adjustment and adjustment takes place by moving the needle plate 7, which is firmly connected to the shuttle 3 in the Z direction. The connecting rod 15, which is connected at the first end to the eccentric drum 11 on the adjusting shaft 9 and at the second end to the shuttle carriage 3, is thus displaced the needle plate 7 relative to the needle tip 6 or the needle eye 16. The position of the tip 6 of the needle 4 remains unchanged since the latter or its drive is connected to the machine frame.
    The operation of the adjustment mechanism, i.e. the mode of operation and the mechanical structure, explained in more detail.
    In Fig. 3 the individual elements of the device are shown explosively. Through a suitable choice of material for the race 25, which is inserted in a bore 13 'in the head 13, and / or its peripheral jacket and the surface of the eccentric drum 11 on the adjusting shaft 9, the coefficient of friction f between the two can be precisely defined in order to achieve this that self-locking takes place at the respectively set angular position of the eccentric drum 11 and the head 13.
    The actuating shaft 9 is supported on the side of the eccentric drum 11 by a bearing block 29 with a slide bearing 37. The bearing block 29 is attached to the rear carriage 2. A suitable choice of material between the plain bearing 37 and the bearing block 29 enables self-locking if this is to take place on the adjusting shaft 9 instead of on the eccentric drum 11 or additionally on the adjusting shaft 9.
    For simple manufacture and maintenance of the embroidery machine and its elements, the adjusting shaft 9 can also be composed of several short sections, each of which is connected to the adjacent sections by brackets 31. This design makes it possible to manufacture the sections of the adjusting shaft 9 in one piece with the eccentric drum 11 and also to be able to adjust and adjust the angles of rotation of the eccentric drums 11 with respect to the adjacent sections with eccentric drums 11. Of course, the eccentric drum 11 could also be designed to be rotatable and subsequently fixable for the adjustment.
    The connecting rod 15 can be screwed or glued to the head 13. The other end of the connecting rod 15 is, for example, held clamped in a bore 35 in the bearing element 17.
    Furthermore, in FIG. 3 elements can be seen with which the bearing element 17 is connected to the bearing pin 19 fastened to the shuttle 3. This can be done for example by screwing.
    4 to 6 three different settings of the carriage width are shown, i.e. the distance d between the needle tip 6 and the needle plate 7. FIG. 6 shows the approximately largest carriage width d when the embroidery base 8 is replaced and / or when the accessibility to the shuttle tracks 5 on the shuttle carriage 3 requires this. In this setting, the distance m between the axis A of the adjusting shaft 9 and the axis C of the journal 19 on the shuttle 3 is the smallest. The greatest distance between the periphery of the eccentric drum 11 and the axis A of the adjusting shaft 9 lies on the left side of the axis A, so that the axis B of the connecting rod 15 intersects the axis A of the adjusting shaft 9 (angle γ). The distance m, from the axis A of the adjusting shaft 9 to the center of the bearing pin 19, then has the smallest value (FIG. 6).
    In Fig. 4, the greatest possible distance d between the needle tip 6 and the needle plate 7 is not reached, but since the eccentric drum 11 is rotated by an angle α in the counterclockwise direction to the horizontal, the distance is practically 0.4 mm from the right end position.
    5, the rotation of the eccentric drum 11 with respect to the horizontal counterclockwise (angle β) is still somewhat larger and consequently the distance m between the axis A of the adjusting shaft 9 and the axis C of the journal 19 is reduced, for example, by one millimeter.
    From the illustrations it can be seen that a change in the distance d of one millimeter is achieved by a rotation angle of β-α of, for example, 15 °. Correspondingly, twisting the adjusting shaft 9 by 2 ° causes a change in the carriage width in the range of tenths of a millimeter.
    CH 714 654 A2 [0018] Rotation angle adjustments in the range of a few degrees of angle consequently allow the extremely precise adjustment of the carriage width in the range of tenths of a millimeter, and that simultaneously over the entire length of the embroidery machine. Such rotary movements can be carried out very precisely with the servo drives available today and, if necessary, a reduction gear used in between. At the same time, however, it is also possible to achieve the largest possible carriage width with one and the same drive if the adjusting shaft 9 is rotated by an angle γνοη about 180 °, which can of course be done with the same drive motor.
    Legend of the Reference Numbers [0019]
    Carrier tube of the rear end
    rear car
    Schiffchenwagen
    needle
    shuttle race
    pinpoint
    needle plate
    embroidery ground
    actuating shaft
    shuttle
    eccentric drum
    thread loop
    small end
    13 'hole
    Schiffchenspitze
    connecting rod
    eye of a needle
    bearing element
    pivot
    race
    25 'hole
    Circlip (shaft)
    bearing block
    clamps
    drilling
    bearings
    Z direction Z perpendicular to the embroidery base
    A axis of the actuating shaft 9 d distance between needle tip and fabric line f coefficient of friction
    CH 714 654 A2 m Value or distance from axis A to the center of the journal 19
    X direction across the needle 4 α angle embroidery carriage width 10.8 ß angle embroidery carriage width 11.8 γ angle embroidery cloth change
    claims
    权利要求:
    Claims (11)
    [1]
    1. shuttle embroidery machine with a device for adjusting and adjusting the carriage width, comprising on the front of the embroidery machine a plurality of needles (4) and their drives and on the back of the embroidery machine each of the needles (4) assigned shuttle tracks (5) on an in Shuttle carriage (3) slidably mounted in the Z direction, and a rear carriage (2) with an adjusting shaft (9) running in the X direction in the rear carriage (2) and supported on pedestals (29), and with this adjustable adjusting means with which the shuttle carriage ( 3) is displaceable, characterized in that eccentric drums (11) are arranged on the adjusting shaft (9) as eccentric to the axis A adjusting shaft (9), that races (25) are mounted on the eccentric drums (11) such that the races (25) on connecting rods (15), and that the connecting rods (13) are articulated on the shuttle (3).
    [2]
    2. shuttle embroidery machine according to claim 1, characterized in that a cylindrical bore (25 ') is formed on each connecting rod (15), which surrounds the associated eccentric drum (11) and acts as a plain bearing.
    [3]
    3. shuttle embroidery machine according to claim 2, characterized in that the guideways are formed directly in the connecting rod heads (13) on the connecting rods (15).
    [4]
    4. shuttle embroidery machine according to claim 2, characterized in that on the heads (13) a race (25) is inserted into the guideway.
    [5]
    5. shuttle embroidery machine according to one of claims 2 to 4, characterized in that the surface on the guideway and / or the surface of the eccentric drum (11) has a coefficient of friction f which is self-locking between the inner race surface and the periphery of the eccentric drum (11) allows.
    [6]
    6. shuttle embroidery machine according to claim 1, characterized in that guideways are formed on the bearing blocks (29) and act as plain bearings (37) for the actuating shaft (9).
    [7]
    7. shuttle embroidery machine according to claim 6, characterized in that the surface on the guideways of the bearing blocks (29) and / or the adjusting shaft (9) have a coefficient of friction f, which enable self-locking between the bearing blocks (29) and the adjusting shaft (9) ,
    [8]
    8. shuttle embroidery machine according to one of claims 5 or 7, characterized in that the coefficient of friction f consists of a coating of the guideways made of plastics such as PA6.6, POM, PC, PT, PBT, PES, PEEK, PTS or the like.
    [9]
    9. shuttle embroidery machine according to one of claims 1 to 5, characterized in that the periphery of the eccentric drum (11) and / or the actuating shaft 9 has a hardened and / or ground surface.
    [10]
    10. shuttle embroidery machine according to one of claims 1 to 5 and 9, characterized in that the eccentric drum (11) has an eccentrically arranged bore and is rotatably attached to the adjusting shaft (9).
    [11]
    11. shuttle embroidery machine according to one of claims 1 to 5 and 9, characterized in that the eccentric drum (11) has eccentrically arranged stub axles and is made in one piece therewith, where the stub axles of adjacent eccentric drums (11) are connected to one another and the adjusting shaft (9) form.
    类似技术:
    公开号 | 公开日 | 专利标题
    DE2523460C2|1982-07-08|Device for thread cutting
    DE2317215A1|1974-10-17|DEVICE FOR ALIGNING CIRCULAR KNIVES
    DE3539371A1|1986-12-04|DEVICE FOR ADJUSTING THE NEEDLE LIFT ON A SEWING MACHINE
    EP3752668B1|2021-10-13|Shuttle embroidery machine
    DE2755209C2|1982-09-02|Wire stitching device
    WO2019158229A1|2019-08-22|Shuttle embroidery machine
    DE2610185C3|1982-02-11|Machine with several processing heads, in particular for machining a workpiece
    DE3819975C2|1995-11-09|Sewing machine
    DE3545008C2|1989-01-12|
    DE102008033425A1|2010-01-21|Strand granulator with cutting gap adjustment
    DE2659927C2|1983-07-07|Device for sharpening a blade of a cutting machine
    DE1216058B|1966-05-05|Rolling ring drive for converting a rotating movement into a reciprocating movement
    DE3027310A1|1981-02-05|NEEDLE DRIVING DEVICE FOR SEWING MACHINES
    DE2220161A1|1973-10-31|DEVICE FOR MOVING PARTS, IN PARTICULAR TOOL CHANGING DEVICE IN MACHINE TOOLS
    DE955192C|1956-12-27|Adjustable eccentric, especially for sewing machines
    DE1785528A1|1971-04-22|Device for adjusting the stitch length for sewing machines
    DE2158777A1|1973-05-30|Wire and strip press feed mechanism - with adjustable feed length
    DE1710190C3|1978-01-19|Control device for the shafts of looms
    DE3906573A1|1989-09-14|Device for making very small holes in a film web or tubular film
    DE2037270C3|1977-02-17|Rotating scissors
    DE2644611A1|1977-04-07|QUILTING MACHINE
    DE925986C|1955-04-04|Device for profiling metal workpieces
    DE2059145B2|1973-04-12|Wire straightening machine - with crankshaft drive
    DE2220496A1|1972-11-09|Workpiece holder for precision grinding machines
    DE379372C|1923-08-23|Crank embroidery machine
    同族专利:
    公开号 | 公开日
    TW202001025A|2020-01-01|
    EP3752668B1|2021-10-13|
    CH714642A1|2019-08-15|
    EP3752668A1|2020-12-23|
    KR20200126444A|2020-11-09|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    CH34953A|1905-08-25|1906-06-30|Adolph Saurer|Device on shuttle embroidery machines for horizontal movement of the rear carriage|
    DE568379C|1929-11-24|1933-01-18|Robert Reiner Dr|Device for temporarily starting or stopping single or multiple needle bars in a row on gate embroidery machines|
    GB800240A|1955-05-18|1958-08-20|Pathe Tool Mfg Co Inc|Multi-needle shuttle sewing machines, embroidery machines and the like|
    DE10334839A1|2003-07-30|2005-03-03|Ina-Schaeffler Kg|Embroidery head for an embroidery machine|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    CH00172/18A|CH714642A1|2018-02-13|2018-02-13|A shuttle.|KR1020187036932A| KR20200126444A|2018-02-13|2018-07-19|Shuttle embroidery machine|
    PCT/EP2018/069618| WO2019158229A1|2018-02-13|2018-07-19|Shuttle embroidery machine|
    EP18746125.6A| EP3752668B1|2018-02-13|2018-07-19|Shuttle embroidery machine|
    TW107129804A| TW202001025A|2018-02-13|2018-08-27|Shuttle embroidery machine|
    [返回顶部]