澳大利亚专利AU2012365628A1 A motorized viscous material dispenser and a method of operating a dispenser

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专利摘要:
A motorized viscous material dispenser, especially a caulking gun, comprises a motor (27), an operation parameter sensor (51), a data processing device (35), a memory device (37), and at least one operator activated switch (7, 10). The dispenser has a first dispensing mode in which the data processing device (53) records operation parameter values read by the operation parameter sensor (51), when a switch (7) is activated by an operator, and stores at least one operation parameter value in the memory device (37), the motor (27) being activated in accordance with the activation of said switch (7), and a second dispensing mode in which the data processing device (35) activates the motor (27) in accordance with the operation parameter values stored in the memory device (37) when a switch (7) is activated by an operator.
公开号:AU2012365628A1
申请号:U2012365628
申请日:2012-12-27
公开日:2014-07-24
发明作者:Jorgen Elmelund；Martin Grontved
申请人:Sulzer Mixpac Denmark AS；
IPC主号:B05C17-01

专利说明:
WO 2013/104362 PCT/DK2012/050508 1 A MOTORIZED VISCOUS MATERIAL DISPENSER AND A METHOD OF OPERATING A DISPENSER The present invention relates to a motorized viscous material dis 5 penser, especially a caulking gun, comprising a motor, an operation parame ter sensor, a data processing device, a memory device, and at least one op erator activated switch. US-B-8 020 727 discloses a caulking gun of the above art provided for monitoring and controlling motor current in order to i.a. avoid excessive 10 load, provide for soft start, provide for variable auto-reverse and provide for battery conversation. The data processing device may modify the memory during use the data thus stored being extractable to be used e.g. for diagno sis in case of tool failure, learning about typical applications, verifying in warrantee status, and tracking run time and number of cycles for various ap 15 plications including rental. The operator activated switches comprise a trigger, a clutch trigger, and a speed dial. DE-U-20 2004 003 925 discloses another caulking gun with a pre programmable controller, which is programmable e.g. by means of a house hold computer. Amongst programmable parameters are e.g. dispensing and 20 retraction speed, distance (absolute or relative), acceleration and retardation, etc. The object of the present invention is to provide a versatile dispenser for viscous material and a novel method of operating such a dispenser. Thus according to the invention a motorized viscous material dis 25 penser, especially a caulking gun, comprising a motor, an operation parame ter sensor, a data processing device, a memory device, and at least two op erator activated switches, is characterised by said dispenser having a first dispensing mode in which the data processing device records operation pa rameter values read by the operation parameter sensor, when a switch is ac 30 tivated by an operator, and stores at least one operation parameter value in the memory device, the motor being activated in accordance with the activa tion of said switch, and a second dispensing mode in which the data process ing device activates the motor in accordance with the operation parameter WO 2013/104362 PCT/DK2012/050508 2 values stored in the memory device when a switch is activated by an opera tor. A basic idea of the invention is that an operator, i.e. a human operat ing the dispenser, should be able to repeat in a simple way a given task of 5 dispensing. An example of such a task could be to fill a viscous material, such as glue, into a number of similar holes for anchorage of similar elements in either of said holes. A dispenser according to the invention e.g. allows the operator to manually control the dispenser in the first dispensing mode to dis pense an amount of material into a hole, and subsequently switch to the sec 10 ond dispensing mode to automatically dispense a similar amount of material into other holes. In some embodiments the dispenser comprises at least two operator activated switches. In an embodiment the operator activated switches comprise a trigger 15 switch and a dispensing mode selection switch. This allows the operator to select the operation mode or dispensing mode using the dispensing mode selection switch and subsequently operate the dispenser to dispense material using the trigger switch. In another embodiment the operator activated switches comprise a 20 first dispensing mode trigger switch and a second dispensing mode trigger switch. This allows the operator to select the dispensing mode by activating when dispensing material either the first dispensing mode trigger switch or the second dispensing mode trigger switch. The first dispensing mode trigger switch and a second dispensing mode trigger switch may be combined in a 25 single rocker button to avoid mal-operation, said rocker button having a neu tral position and two oppositely rotated positions in either of which respec tively the first and the second dispensing mode are activated. In an embodiment the dispenser comprises a piston for driving the material to be dispensed the operation parameter sensor sensing a value in 30 dicative of a change of position of the piston. The change of position of the piston provides in a simple way a measure of the amount of material dis pensed in the first dispensing mode and thus providing in the second dispens- WO 2013/104362 PCT/DK2012/050508 3 ing mode for a similar change of the position of the piston will provide within reasonable tolerances for dispensing an amount of material similar to the amount of material dispensed in the first dispensing mode. In an embodiment a revolution counter is provided counting revolu 5 tions of a rotating element of a drive train extending from the motor to the pis ton. This provides in a simple way a value indicative of the change of position of the piston. In an embodiment a movement sensor is provided by a pulse gen erator attached to a moving element of a drive train extending from the motor 10 to the piston, including the motor and the piston, generating pulses at regular steps of movement of the moving element, and a data processing device counting pulses provided by the pulse generator. Such technique is generally known e.g. from digital sliding callipers. In another aspect according to the invention a method of operating a 15 motorized viscous material dispenser comprises selecting a first dispensing mode, recording at least one operation parameter value while dispensing ma terial at a dispensing event in accordance with an operator's operation of the dispenser and storing at least one operation parameter value indicative of the dispensing event, selecting a second dispensing mode and operating in said 20 second dispensing mode by dispensing upon operation by an operator mate rial in accordance with the at least one stored operation parameter value. In an embodiment of operating a dispenser comprising a piston for driving the material to be dispensed, said operation parameter value is a value indicative of a change of position of the piston. 25 In an embodiment the at least one operation parameter comprises a count of revolutions during the dispensing event of a rotating element of a drive train extending from a motor to a piston. In an embodiment of operating a motorized viscous material dis penser comprising a trigger switch, said method comprises registration upon 30 activation of said trigger switch a start of a dispensing event and registration upon deactivation of said trigger switch an end of said dispensing event. Hereby in a simple way a dispensing event is defined by the operator e.g.
WO 2013/104362 PCT/DK2012/050508 4 pulling the trigger (start of dispensing event) and releasing the trigger (end of dispensing event). In an embodiment dispensing is terminated upon termination of op eration by the operator. Hereby the operator is able always to control termina 5 tion of a dispensing event, even in the second dispensing mode when the dispensing is stopped automatically e.g. after dispensing an amount of mate rial corresponding to the at least one operation parameter value. Usually the operator generally terminates operation by releasing the switch activated by him or her to dispense material in the first or the second dispensing mode. 10 In the following the invention will be described in further detail by way of examples with reference to the accompanying drawings, in which Fig. 1 shows an embodiment of a caulking gun obliquely from the front and from above, Fig. 2 shows the caulking gun oblique from the rear and from above, 15 Fig. 3 shows the caulking gun in a horizontal view, Fig. 4 is a diagram of the caulking gun including a control, and Fig. 5 shows a trigger rocker button in a different embodiment of a caulking gun. Figs. 1, 2 and 3 show a motorized viscous material dispenser 1 in an 20 embodiment of the kind, which often is referred to as a caulking gun. It com prises a housing 3, part of which is left out in Figs. 1 and 2 to show interior parts, said housing providing a handle 5 to be grabbed by an operator for op erating the dispenser to dispense material. At the handle the dispenser com prises a trigger switch or trigger 7, a speed control dial 9 and an operation 25 mode selection switch in the form of an on/off mode switch 10. The housing 3 accommodates a drive unit 11. At the bottom of the housing 3 a rechargeable battery pack 13 is attached in a manner normal for portable electric tools. Al ternatively the dispenser may e.g. be provided with a cord for connection with a power source such as lighting mains. 30 At a front end of the housing 3 and the drive unit 11 a holder 15 for a container of viscous material to be dispensed is mounted. Thus the holder 15 defines the front end of the dispenser 1. The container of viscous material WO 2013/104362 PCT/DK2012/050508 5 may be of any kind e.g. of cartridge type or of sausage type, which are types well known in the art. The dispenser 1 further comprises a rack 17, which at a front end is carrying a piston 19 for driving the viscous material for dispensing the same 5 as it is well known by the skilled person. The rack 17 is extending through the drive unit 11 and at a rear end opposite the front end the rack 17 is attached to a second handle 21. Guide rods 23 are extending parallel to the rack 17 between the piston 19 and the second handle 21. In the present embodiment the piston 19 is a coaxial piston and comprises a first central piston part 19' 10 constituted by the end of the rack 17 and a second annular piston part 19", which is supported by the guide rods 23. Being connected through the second handle 21 the rack 17 and the guide rods 23, and thus the first and the sec ond piston parts 19' and 19", move in unison. The dispenser of the embodi ment shown may be used with a container of viscous material containing only 15 one component of viscous material and with a container of viscous material, a so-called coaxial container, containing two components of viscous material arranged coaxially in the container and separated by an annular partition in side the container. The drive unit 11 comprises a drive unit housing 25 accommodating 20 a DC motor 27 (see Fig. 4) driving through a gear train 29 a cylindrical pinion gear meshing inside the drive unit 11 with the rack 17 to drive the latter. Referring to Fig. 4 the dispenser comprises a control unit 31 with a logic control 33 including a data processing device 35 and a memory device 37, a bi-directional DC motor driver 39, and additional functions that does not 25 as such form part of the present invention, namely a torque control 41 for avoiding excess torque that could result in a mechanical breakdown, a battery monitor 43, a temperature monitoring system 45 for avoiding excess tempera ture e.g. in the DC motor, a self test function 47, and an on/auto off switch 49. The DC motor 27 is provided with a revolution counter provided by a pulse 30 generator 51 attached to the DC motor 27 and the data processing device 35 counting the pulses provided by the pulse generator 51. An LED indicator 53 is provided for indicating specific conditions.
WO 2013/104362 PCT/DK2012/050508 6 For input to the control unit 31 the dispenser 1 further comprises the trigger 7, the speed control dial 9 and the on/off mode switch 10, and also an end-stop switch 55 for indicating an end position of the rack 17. The dispenser may be adapted in any way for retraction of the rack 5 17 and piston 19 for exchange of the container with the material to be dis pensed as it is usual for dispensers of the kind in question. In use i.e. with a container of viscous material to be dispensed mounted in the holder the dispenser can be operated by an operator as fol lows. 10 The operator uses the on/off mode switch 10 to select a first dispens ing mode (off) or a second dispensing mode (on). In the first dispensing mode the operator pulls the trigger 7 to dis pense material from the container. Pulling the trigger 7 activates the on/auto off switch 49 to turn the control unit 31 on, and activates the logic control 33 15 to reset the memory device 37 and start driving the DC motor 27 through the DC motor driver 39. The DC motor 27 drives the rack 17 and the piston 19 through the gear train 29 and the pinion gear (not shown) whereby material to be dispensed is expelled from the container as it is known per se. The pulse generator 51 provides a pulse per revolution of the DC motor 27 and while the 20 DC motor 27 is running the data processing device 35 counts the pulses re ceived from the pulse generator 51 and up-dates the memory device 37, which thus stores the number of revolutions performed by the DC motor since the trigger 7 was pulled, and when the operator releases the trigger 7 the logic control 33 registers the end of a dispensing event and the memory de 25 vice 37 stores the number of revolutions performed by the DC motor 27 dur ing the dispensing event. The operator may pull the trigger 7 again in a second dispensing event and the above series of actions are performed once again including resetting the memory device 37, which thus at the end of the second dispens 30 ing event stores the number of revolutions performed by the DC motor 27 dur ing the second dispensing event. When the operator has performed a dispensing event to his or her WO 2013/104362 PCT/DK2012/050508 7 satisfaction and wishes to repeat the dispensing event e.g. to fill a hole with the same amount of material as during the latest dispending event, the opera tor switches the on/off mode switch 10 to select the second dispensing mode. In the second dispensing mode the memory device 37 is not reset in 5 relation to the number of revolutions performed during the latest dispensing event in the first dispensing mode when the trigger 7 is pulled, but the logic control 33 activates the DC motor to drive the rack 17. The logic control 33 counts the number of revolutions performed by the DC motor 27 since the trigger 7 was pulled and when the number of revolutions equals the stored 10 number of revolutions performed during the latest dispensing event in the first dispensing mode the logic control 33 stops the DC motor 27 and registers the end of a dispensing event in the second dispensing mode. Should the opera tor release the trigger 7 before the logic control 33 stops the DC motor 27 then the DC motor 27 is stopped and the logic control 33 registers the end of 15 a dispensing event in the second dispensing mode. When the logic control 33 registers the end of a dispensing event it may activate through the DC motor driver 39 the DC motor 27 to reverse a given number of revolutions in order to relieve a pressure in the container with the material to be dispensed in order to minimize the risk of material oozing 20 from the dispenser and to facilitate retraction of the rack 17 and piston 19 for exchange of the container with the material to be dispensed. If the DC motor 27 is reversed in this manner in the first dispensing mode as well as the sec ond dispensing mode no special precautions need to be taken. However if the DC motor 27 is only reversed when operating in the second dispensing mode 25 the number of reversed revolutions should be added to the number of revolu tions performed in the latest event of dispensing in the first dispensing mode when the dispenser is activated other than the first time in the second dis pensing mode to recover the reversed revolutions before repeating the dis pensing of said latest event. 30 When the operator wishes to regain control of the dispensing he or she switches the on/off mode switch 10 back to select the first dispensing mode.
WO 2013/104362 PCT/DK2012/050508 8 The LED indicator 53 may indicate one or more of a number of spe cific conditions such as, first dispensing mode activated, second dispensing mode activated, low or full battery charge, overload (torque), high tempera ture, end-stop switch 55 activated, etc. 5 The speed control dial 9 is used by the operator to set a maximum speed of the DC motor 27 and thus of the rack 17 and the piston 19. The trig ger 7 may be embodied as an on/off switch in relation to the activation of the DC motor 27 or it may be provided for "soft" start and/or speed regulation de pendent on degree of depression as it is generally known in the art of electric 10 manual tools. Using the dispenser according to the present invention an operator is able in a convenient manner to repeat a dispensing task. Though a specific embodiment has described above with reference to the drawing is should be understood that the invention is not restricted to said embodiment. Especially 15 the skilled person will recognise that other operation parameters may be used for establishing a measure of the performance in the first dispensing mode in order to repeat that performance in the second dispensing mode. Thus the motor current and voltage may be used to establish the torque of the motor and combining the torque with the time of operation during a dispensing event 20 a measure of the performance may be calculated. Relating to the embodiment described above is should be noted that whereas the pulse generator 51 is attached to the DC motor 27 for counting the revolutions of said DC motor 27 it is also possible to attach the pulse gen erator to an element of the gear train 29 or the pinion gear driving the rack 17. 25 However due to the gearing the DC motor makes the most rotations in rela tion to the distance of the movement of the rack 17 for which reason attaching the pulse generator 51 to the DC motor provides the highest resolution of the measurement of the movement of the rack 17 and the piston 19. It is also possible to attach a pulse generator to the rack 19 or one of the guide rods 23 30 to read the movements thereof using a technique e.g. known from sliding cal lipers. Fig. 5 shows an alternative to the handle 5 with the trigger 7 and the WO 2013/104362 PCT/DK2012/050508 9 on/off mode switch 10 for selecting the first and the second dispensing mode. Thus Fig. 5 shows part of a handle 5' with two triggers 57 and 59 combined with a rocker button 61 rotatable around a hinge 63 between a neutral posi tion as shown and two tilted positions. The rocker button is biased towards 5 the neutral position. In a first tilted position the upper part of the rocker button 61 is de pressed as indicated by arrow 65. Thereby the rocker button 61 is rotated counter-clockwise as seen in Fig. 5 and the first trigger 57 is activated. Hereby the dispenser is activated in the first dispensing mode as described 10 above. In a second tilted position the lower part of the rocker button 61 is depressed as indicated by arrow 67. Thereby the rocker button 61 is rotated clockwise as seen in Fig. 5 and the second trigger 59 is activated. Hereby the dispenser is activated in the second dispensing mode as described above. 15 Accordingly the operator selects the first and the second dispensing mode by depressing the upper and the lower part of the rocker button 61 in stead of selecting the dispensing mode by means of the on/off mode switch 10. The skilled person will easily realise other ways of providing for 20 change between the first dispensing mode and the second dispensing mode. E.g. Fig. 6 illustrates a handle 5" of a contemplated embodiment comprising a single trigger button 77 activating two trigger switches 77a and 77b at different depressed positions of the trigger button 77, cf. double arrow 79. The first trigger switch 77a may be a main switch activating the on/auto off 25 switch 49 of the control unit 31 and the second trigger switch 77b may com prise a potentiometer activating the torque control 41 of the control unit 31 to run the DC motor at a speed depending on the position of the trigger button 77 and thus the potentiometer. The logic control 33 may provide for running the dispenser in a given dispensing mode upon depression of the trigger but 30 ton 77 whereby both trigger switched 77a and 77b are activated, and for switching between the first and the second dispensing mode, and vice versa, upon depression of the trigger button 77 for activation of only the first trigger WO 2013/104362 PCT/DK2012/050508 10 switch 77a and subsequently release of said first trigger switch 77a without the second trigger switch 77b having been activated. The logic control 33 may alternatively provide for switching between the first and the second dispens ing mode, and vice versa, upon two short depressions of the trigger button 77 5 for activation of the first trigger switch 77a. The latter mode of switching be tween the first and the second dispensing mode may also be applied using a single trigger button activating only one trigger switch having the function of activating both the on/auto off switch 49 and the torque control 41, said only one trigger switch possibly comprising a potentiometer activating the torque 10 control 41 to provide for running the dispenser at different speeds.

权利要求:
Claims (12)
[1] 1. A motorized viscous material dispenser (1), especially a caulking gun, comprising a motor (27), an operation parameter sensor (51), a data processing device (35), a memory device (37), and at least one operator acti 5 vated switch (7, 10; 57, 59), c h a r a c t e r i z e d by said dispenser having a first dispensing mode in which the data processing device (35) records op eration parameter values read by the operation parameter sensor (51), when a switch (7; 57) is activated by an operator, and stores at least one operation parameter value in the memory device (37), the motor (27) being activated in 10 accordance with the activation of said switch (7; 57), and a second dispensing mode in which the data processing device (35) activates the motor (27) in accordance with the operation parameter values stored in the memory device (37) when a switch (7; 59) is activated by an operator.
[2] 2. A dispenser according to claim 2, wherein the dispenser com 15 prises at least two operator activated switches (7, 10; 57, 59).
[3] 3. A dispenser according to claim 2, wherein said operator activated switches comprise a trigger switch (7) and an operation mode selection switch (10).
[4] 4. A dispenser according to claim 2, wherein said operator activated 20 switches comprise a first dispensing mode trigger switch (57) and a second dispensing mode trigger switch (59).
[5] 5. A dispenser according to any of the claims 1 to 4, wherein the dis penser comprises a piston (19) for driving the material to be dispensed the operation parameter sensor (51) sensing a value indicative of a change of 25 position of the piston (19).
[6] 6. A dispenser according to claim 5, wherein a revolution counter (51) is provided counting revolutions of a rotating element of a drive train ex tending from the motor (27) to the piston (19).
[7] 7. A dispenser according to claim 5 or 6, wherein a movement sensor 30 is provided by a pulse generator (51) attached to a moving element (27) of a drive train extending from the motor (27) to the piston (19), including the mo tor and the piston, generating pulses at regular steps of movement of the WO 2013/104362 PCT/DK2012/050508 12 moving element, and a data processing device (35) counting pulses provided by the pulse generator (51).
[8] 8. A method of operating a motorized viscous material dispenser (1), especially a caulking gun, comprising selecting a first dispensing mode, re 5 cording at least one operation parameter value while dispensing material at a dispensing event in accordance with an operator's operation of the dispenser and storing at least one operation parameter value indicative of the dispens ing event, selecting a second dispensing mode and operating in said second dispensing mode by dispensing upon operation by an operator material in 10 accordance with the at least one stored operation parameter value.
[9] 9. A method according to claim 8 of operating a dispenser comprising a piston (19) for driving the material to be dispensed, wherein said operation parameter value is a value indicative of a change of position of the piston (19). 15
[10] 10. A method according to claim 8 or 9, wherein the at least one op eration parameter comprises a count of revolutions during the dispensing event of a rotating element of a drive train (29) extending from a motor (27) to a piston (19).
[11] 11. A method according any of the claims 8 to 10 of operating a mo 20 torized viscous material dispenser (1) comprising a trigger switch (7; 57, 59) said method comprising registration upon activation of said trigger switch a start of a dispensing event and registration upon deactivation of said trigger switch an end of said dispensing event.
[12] 12. A method according to any of the claims 8 to 11, wherein dis 25 pensing is terminated upon termination of operation by the operator.

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引用文献:

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法律状态:
2017-01-05| FGA| Letters patent sealed or granted (standard patent)|

2018-02-15| PC| Assignment registered|Owner name: SULZER MIXPAC AG Free format text: FORMER OWNER(S): SULZER MIXPAC DENMARK A/S |

2020-07-23| MK14| Patent ceased section 143(a) (annual fees not paid) or expired|

优先权:

申请号 | 申请日 | 专利标题

DKPA201270020||2012-01-12||

PCT/DK2012/050508|WO2013104362A1|2012-01-12|2012-12-27|A motorized viscous material dispenser and a method of operating a dispenser|

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