JP5502517B2 - Sequin tape feeder - Google Patents

Description

  The present invention relates to a sequin tape feeding device that feeds a sequin tape toward a needle drop point.

  Some sequin tape feeders are configured as follows. That is, the sequin tape feeding device 90 of the conventional example (Patent Document 1) shown in FIG. 8 includes a driving device 91 provided with a driving hole 92c (long hole) as a driving unit that outputs driving force, and a sequin tape T as a needle. It includes a feed unit 93 that is slidably supported in the feed direction P toward the drop point and that can be adjusted in position in the feed direction P. Here, the drive hole 92c is configured to reciprocate in the circumferential direction (rotation direction) about the support shaft 92b. The feed unit 93 includes an input shaft 94a that is slidably engaged with the drive hole 92c (long hole) in the feed direction P, and an output pin 94c that is engaged with the sequin tape T. A link mechanism 94 that drives the sequin tape T in the feed direction P by an output pin 94c when driven is provided.

  In the sequin tape feeding device 90, when the sequin tape T is exchanged for a different size, the feed amount (feed end position) of the sequin tape T and the feed unit 93 Adjust the position (sequin tape cut position) according to the following procedure.

  That is, first, by adjusting the circumferential amplitude of the drive hole 92c by changing the number of pulses of a drive motor (not shown) of the drive device 91, the feed amount of the sequin tape T by the link mechanism 94 is substantially equal to the diameter of the sequin. Adjust to one. Then, in the state where the sequin tape T is fed out by the feed amount adjusted to one, the position of the feed unit 93 is adjusted in the feed direction P as shown in FIGS. Align the center hole of the sequin at the tip of the needle with the needle entry point.

JP 2009-213645 A

  However, in the conventional example, since the drive hole 92c reciprocates in the circumferential direction, the input shaft 94a is fed into the drive hole 92c (long hole) by adjusting the position of the feed unit 93 in the feed direction P. When sliding in the direction P, the magnitude of the drive radius R of the input shaft 94a by the drive hole 92c changes. Therefore, the feed amount of the sequin tape T that matches the previous one also changes.

  Accordingly, it is an object to prevent the amount of feed of the sequin tape from changing even if the position of the feed unit is adjusted in the feed direction.

  In order to achieve the above object, a sequin tape feeder of the present invention includes a drive device having a drive unit that outputs a driving force, and supports the sequin tape so as to be slidable in a feed direction toward a needle drop point and the feed direction. The feed unit includes an input unit that is slidably engaged in the feed direction and an output unit that is engaged with the sequin tape. In the sequin tape feeding device provided with a link mechanism that drives the sequin tape in the feeding direction at the output unit when the input unit is driven by the driving unit, the driving unit is arranged in a vertical direction orthogonal to the feeding direction. The link mechanism is configured so that the linear reciprocating motion of the drive unit is changed to the motion in the feeding direction. Characterized in that it is configured to communicate the sequin tape.

  Here, the drive device is not particularly limited, and a drive motor that reciprocally rotates the motor shaft, a drive link that transmits the reciprocating motion of the motor shaft to a linear reciprocating motion in the vertical direction and transmits the reciprocating motion to the drive unit. It is preferable that it is comprised.

  Further, the drive unit and the input unit are not particularly limited, but the drive unit is a drive slit extending in the feeding direction, and the input unit protrudes from a lever constituting a part of the link mechanism. The input shaft that reciprocates in the circumferential direction as the lever swings, and when the input shaft is inserted into the drive slit and the drive slit linearly reciprocates in the vertical direction, The input shaft preferably reciprocates in the circumferential direction and is displaced in the vertical direction together with the drive slit, and slides in the feed direction within the drive slit.

  According to the present invention, even if the input unit slides in the feed direction with respect to the drive unit by adjusting the position of the feed unit in the feed direction, the drive unit reciprocates linearly in the vertical direction perpendicular to the feed direction. The driving radius of the input unit by the driving unit does not change as in the conventional example. Therefore, even if the position of the feed unit is adjusted in the feed direction, the feed amount of the sequin tape does not change.

It is a side view which shows the sequin tape feeder of Example 1. FIG. It is a perspective view which shows the sequin tape feeder of the Example, and its periphery. It is a perspective view which shows the sequin tape feeder of the Example. It is a perspective view which shows the feed unit of the Example, and its periphery. It is a side view which shows the mode at the time of driving a sequin tape with the sequin tape feeder of the Example in (a) (b). It is a side view which shows the mode at the time of position adjustment of a feed unit with the sequin tape feeder of the Example in (a) and (b). It is a side view which shows the mode at the time of position adjustment of a feed unit with the sequin tape feeder of Example 2 to (a) and (b). It is a side view which shows the mode at the time of position adjustment of a feed unit with the sequin tape feeder of a prior art example to (a) (b).

  1 to 6 is a device for feeding the sequin tape T wound around the reel 7 toward the needle drop point of the sewing needle 5a of the sewing machine head 5. . The reel 7 is attached to the side surface of the sewing head 5 and supported by the upper portion of the bracket 6 protruding forward of the sewing head 5. The sequin tape feeder 9 is a portion of the bracket 6 extending from the lower portion to the upper portion thereof. Is supported so as to be movable up and down between an upper rest position and a lower operation position. The sequin tape feeder 9 includes the following frame, a driving device 10, two feeding units 30, 30, two position adjusting mechanisms 50, 50, and a switching device 60.

[flame]
The frame includes a base frame 9a supported by the retraction mechanism 8 so as to be movable up and down, a movable frame 9b attached to the base frame 9a via a left-right displacement mechanism 9x so as to be displaceable in the left-right direction, It includes two support frames 9c and 9c that are fixedly aligned in the direction.

[Drive device 10]
The driving device 10 is a device that supplies a driving force for driving the sequin tape T, and is attached to the upper portion of the base frame 9a. The drive device 10 includes a drive motor 11 and a drive link 20 shown below.

  The drive motor 11 includes a motor shaft 12 and supplies a driving force by reciprocatingly rotating the motor shaft 12 at a predetermined rotation angle (number of pulses). The rotation angle (number of pulses) when the drive motor 11 reciprocally rotates the motor shaft 12 can be adjusted.

  The drive link 20 is connected to the motor shaft 12 of the drive motor 11 at one end and includes a drive slit 27 c extending in the front-rear direction as a drive unit that outputs a driving force to the other end. The drive slit 27c is driven in the vertical direction by changing the rotational motion to the linear reciprocating motion in the vertical direction and transmitting it to the drive slit 27c. The drive link 20 includes a first drive lever 21, a second drive lever 22, a third drive lever 23, a fourth drive lever 24, an elevating member 25, a connecting shaft 26, and a drive member 27 described below. And is configured. The base end portion of the first drive lever 21 is fixed to the motor shaft 12 so as not to be relatively rotatable. The base end of the second drive lever 22 is rotatably connected to the tip of the first drive lever 21. The base end portion of the third drive lever 23 is rotatably connected to the tip end portion of the second drive lever 22, and the intermediate portion in the length direction is rotatable by a support shaft 23b projecting from the base frame 9a. It is supported. The fourth drive lever 24 has a base end portion rotatably connected to a tip end portion of the third drive lever 23. The elevating member 25 is rotatably connected to the distal end portion of the fourth drive lever 24. The connecting shaft 26 is a shaft member extending in the vertical direction, and the elevating member 25 is fixed to the upper end portion (base end portion), and the vertical intermediate portion (length direction intermediate portion) is provided on the base frame 9a. The portion 26b is supported so as to be slidable in the vertical direction. The drive member 27 is fixed to the lower end portion (tip portion) of the connecting shaft 26 and is provided with the drive slit 27c described above.

[Feeding units 30, 30]
The two feeding units 30 and 30 support the sequin tapes T and T so as to be slidable in the feeding direction P which is substantially horizontal from the front (front of the sewing machine head 5) to the rear (needle dropping point of the sewing needle 5a). A member for transmitting the driving force supplied from the driving device 10 to the sequin tapes T, T to drive the sequin tapes T, T in the feed direction P, and two support frames 9c, 9c arranged in the left-right direction. Are mounted side by side. The two feeding units 30 and 30 are provided symmetrically, and each feeding unit 30 includes a body 31, a guide member 36, a cutter 39, and a link mechanism 40 shown below. .

  The body 31 is a member serving as a base of the feed unit 30 and has a frontal L-shaped or inverted L-shaped cross-sectional shape. Each body 31 is attached to a long hole 33 provided in the support frame 9c, which extends in the feed direction P, with a bolt 32 so that the position of the body 31 can be adjusted in the feed direction P (and the opposite direction). The guide member 36 is attached to the lower portion of the body 31 and includes a guide groove 37 extending in the feed direction P for guiding the sequin tape T to the needle drop point. The cutter 39 is a member for separating the leading sequin from the sequin tape T.

  The link mechanism 40 is a mechanism for feeding the sequin tape T toward the needle drop point by changing the linear reciprocating motion of the drive slit 27c in the vertical direction to the motion in the feeding direction P and transmitting it to the sequin tape T. The first lever 41, the second lever 42, the third lever 43, and the output member 44 shown below are included. The first lever 41 is a lever bent in an L-shape, and an input shaft 41a that is inserted into the drive slit 27c and engages slidably in the feed direction P (and the opposite direction) at the base end thereof. The intermediate portion in the length direction is rotatably supported by a support shaft 41b protruding from the body 31, and an eccentric member 41c is attached to the distal end portion so as to be adjustable. An eccentric shaft 41d is projected from a portion eccentric from the rotation center of the eccentric member 41c. The base end of the second lever 42 is rotatably connected to the eccentric shaft 41d. The base end of the third lever 43 is rotatably supported by a support shaft 43a projecting from the body 31, and the tip of the second lever 42 is rotatable at the middle in the longitudinal direction. It is connected. The output member 44 is pivotally connected to the distal end portion of the third lever 43 at the proximal end side, and an output projection 44c (output portion) that engages with the center hole of the sequin forming the sequin tape T is formed at the distal end portion. Projected. Further, an adjustment member 46 for adjusting the position of the feed end of the output member 44 is attached to the body 31 on the side of the feed direction P from the output member 44 through a support shaft 46a. An adjustment shaft 46b that abuts on the output member 44 is provided at a portion eccentric from the support shaft 46a of the adjustment member 46.

  As shown in FIGS. 5A and 5B, when the drive slit 27c reciprocates linearly in the vertical direction, the input shaft 41a is centered on the support shaft 41b by being pressed by the drive slit 27c. While reciprocating in the circumferential direction (swing direction of the first lever 41), the movement is transmitted to the output projection 44c by the link mechanism 40, and the output projection 44c reciprocates in the feed direction P (and the opposite direction). It moves to drive the sequin tape T in the feed direction P. At this time, the input shaft 41a is displaced in the vertical direction together with the drive slit 27c, and slides in the feed direction P (and the opposite direction) within the drive slit 27c.

[Position adjustment mechanism 50, 50]
The two position adjusting mechanisms 50, 50 are mechanisms for adjusting the positions of the feeding units 30, 30 in the feeding direction P (and the opposite direction) with respect to the support frames 9c, 9c. Each position adjusting mechanism 50 is engaged with a hanging portion 51 projecting from the lower end portion of the support frame 9c, and the hanging portion 51 so as not to be displaceable in the feed direction P (and the opposite direction), and the tip portion is the body 31. And an adjusting screw 52 that is screwed together.

[Switching device 60]
The switching device 60 is a device for switching the input shafts 41a and 41a engaged with the drive slit 27c from one to the other by driving the movable frame 9b in the left-right direction, and is attached to the lower portion of the base frame 9a. ing. The switching device 60 includes a motor shaft 62, a switching motor 61 that supplies driving force by rotating the motor shaft 62, and a movable frame that changes the rotational motion of the motor shaft 62 to a lateral motion. 9b and a switching link 65 to be transmitted to 9b. The switching link 65 includes a first switching lever 66 whose base end is fixed to the motor shaft 62 so as not to rotate relative to the motor shaft 62, and a base end connected to the tip of the first switching lever 66 so as to be rotatable. The portion includes a second switching lever 67 rotatably connected to the movable frame 9b. When the movable frame 9b is driven to the right side by the switching device 60, the input shaft 41a of the left feed unit 30 is inserted and engaged with the drive slit 27c, and the movable frame 9b is driven to the left side. The input shaft 41a of the right feeding unit 30 is inserted into the drive slit 27c and engaged therewith.

  Next, the procedure for exchanging the sequin tape T driven in the feeding direction P by each feeding unit 30 with a different size is described as {1} replacement of the guide member 36, {2} adjustment of the origin position, {3 } Adjustment of the feed amount and {4} position adjustment of the feed unit 30 will be described in this order.

{1} Replacement of Guide Member 36 After the leading end of the sequin tape T is pulled out from the guide groove 37 of the guide member 36, the guide member 36 is replaced with one corresponding to the size of the sequin tape T to be replaced.

{2} Adjustment of Origin Position The origin position (stroke rear end position) of the output member 44 is adjusted by rotating and adjusting the eccentric member 41c.

{3} Adjustment of Feed Amount The feed amount of the sequin tape T by the link mechanism 40 is adjusted to about one sequin diameter by adjusting the vertical amplitude of the drive slit 27c. At this time, first, the output member 44 is displaced in the feed direction P, and the adjustment member 46 is rotated and adjusted so that the output member 44 contacts the adjustment shaft 46b at a desired feed end position (stroke front end position). To. Next, the number of pulses of the drive motor 11 (the rotation angle of the motor shaft 12) is adjusted so that the output member 44 turns back at the feed end position.

{4} Position adjustment of feed unit Loosen the bolt 32 and then turn the adjustment screw 52 to position the feed unit 30 in the feed direction P (or the opposite direction) as shown in FIGS. 6 (a) and 6 (b). The center hole of the sequin at the tip of the sequin tape T at the feed end position is adjusted to the needle drop point of the sewing needle 5a. Thereafter, the bolt 32 is retightened.

  According to the first embodiment, by adjusting the position of the feed unit 30 in the feed direction P (or the opposite direction), the input shaft 41a slides in the feed direction P (or the opposite direction) with respect to the drive slit 27c. However, since the drive slit 27c linearly reciprocates in the vertical direction perpendicular to the feed direction P, the drive amount of the input shaft 41a by the drive slit 27c does not change unlike the conventional example. Therefore, even if the position of the feed unit 30 is adjusted in the feed direction P (or the opposite direction), the feed amount of the sequin tape T does not change.

  The sequin tape feeder 9 according to the second embodiment shown in FIG. 7 is different in that the feeding unit 30 includes the following link mechanism 70 instead of the link mechanism 40 and the sequin tape T is replaced with a different size. This procedure differs from that of the first embodiment, and the other points are the same as those of the first embodiment.

  The link mechanism 70 is a mechanism for feeding the sequin tape T toward the needle drop point by changing the linear reciprocating motion of the drive slit 27c in the vertical direction to the motion in the feeding direction P and transmitting it to the sequin tape T. The first lever 71, the second lever 72, the third lever 73, the slide member 74, and the output member 75, which are described below, are configured. The first lever 71 has an input shaft 71a protruding from the base end portion thereof, which is inserted into the drive slit 27c and slidably engaged in the feed direction P (and the opposite direction). It is fixed to a support shaft 71c projecting so as to be rotatable. The base end of the second lever 72 is fixed to the support shaft 71c. The base end of the third lever 73 is rotatably connected to the tip of the second lever 72. The slide member 74 is a member extending in the vertical direction, and is slidably supported in the feed direction P (and the opposite direction) by two upper and lower slide shafts 74b and 74b provided in the body 31 and extending in the feed direction P. In addition, an eccentric member 74a is attached to the upper portion (base end side) so as to be adjustable. An eccentric shaft (not shown) protrudes from the center of rotation of the eccentric member 74a, and the tip of the third lever 73 is rotatably connected to the eccentric shaft (not shown). Has been. The output member 75 has a base end portion rotatably connected to a lower end portion (front end portion) of the slide member 74, and an output pin 75c (engaged with a center hole of a sequin forming the sequin tape T at the front end portion. The output section) is projected. Further, an adjustment member 76 for adjusting the position of the feed end of the output member 75 is attached to the feed direction P of the body 31 so as to be adjustable in the feed direction P (and the opposite direction). It has been.

  When the drive slit 27c linearly reciprocates in the vertical direction, the input shaft 71a is pressed by the drive slit 27c so that the input shaft 71a is in the circumferential direction about the support shaft 71c (the swing direction of the first lever 71). The reciprocating motion is transmitted to the output pin 75c by the link mechanism 70, and the output pin 75c reciprocates in the feeding direction P (and the opposite direction) to drive the sequin tape T in the feeding direction P. To do. At this time, the input shaft 71a is displaced in the vertical direction together with the drive slit 27c, and slides in the feed direction P (and the opposite direction) within the drive slit 27c.

  Next, the procedure for exchanging the sequin tape T driven in the feeding direction P by each feeding unit 30 with a different size is described as {1} replacement of the guide member 36, {2} adjustment of the origin position, {3 } Adjustment of the feed amount and {4} position adjustment of the feed unit 30 will be described in this order.

{1} Replacement of Guide Member 36 After the leading end side of the sequin tape T is pulled out from the guide groove 37 of the guide member 36, the guide member 36 is replaced with one corresponding to the size of the sequin tape T to be replaced.

{2} Adjustment of Origin Position The origin position (stroke rear end position) of the output member 75 is adjusted by rotating and adjusting the eccentric member 74a.

{3} Adjustment of Feed Amount The feed amount of the sequin tape T by the link mechanism 70 is adjusted to approximately one sequin diameter by adjusting the vertical amplitude of the drive slit 27c. At this time, first, the output member 75 is displaced in the feed direction P and the position of the adjustment member 76 is adjusted in the feed direction P (or the opposite direction), and the output member 75 is moved to the desired feed end position. Make contact at (front end position of stroke). Then, the number of pulses of the drive motor 11 (the rotation angle of the motor shaft 12) is adjusted so that the output member 75 is turned back at the feed end position.

{4} Position adjustment of feed unit Loosen the bolt 32 and then turn the adjustment screw 52 to position the feed unit 30 in the feed direction P (or the opposite direction) as shown in FIGS. The center hole of the sequin at the tip of the sequin tape T at the feed end position is adjusted to the needle drop point of the sewing needle 5a. Thereafter, the bolt 32 is retightened.

  According to the second embodiment, by adjusting the position of the feed unit 30 in the feed direction P (or the opposite direction), the input shaft 71a slides in the feed direction P (or the opposite direction) with respect to the drive slit 27c. However, since the drive slit 27c linearly reciprocates in the vertical direction perpendicular to the feed direction P, the drive amount of the input shaft 71a by the drive slit 27c does not change unlike the conventional example. Therefore, even if the position of the feed unit 30 is adjusted in the feed direction P (or the opposite direction), the feed amount of the sequin tape T does not change.

  In addition, this invention is not limited to the said Example, It can also implement by changing arbitrarily the structure and shape of each part in the range which does not deviate from the meaning of invention.

9 Sequin Tape Feeder 10 Drive Device 11 Drive Motor 20 Drive Link 27c Drive Slit (Driver)
30 Feed unit 40 Link mechanism 41a Input shaft (input unit)
44c Output protrusion (output part)
70 Link mechanism 71a Input shaft (input unit)
75c Output pin (output part)
T Sequin tape P Feed direction

Claims (3)

A drive unit (10) having a drive unit (27c) for outputting a drive force, and a sequin tape (T) are slidably supported in a feed direction (P) toward the needle drop point and in the feed direction (P). A feed unit (30) provided so as to be position-adjustable,
The feed unit (30) includes an input portion (41a, 71a) that is slidably engaged with the drive portion (27c) in the feed direction (P) and an output portion (44c) that is engaged with the sequin tape (T). 75c), and when the input part (41a, 71a) is driven by the drive part (27c), the output part (44c, 75c) causes the sequin tape (T) to move in the feed direction (P). In a sequin tape feeder having a link mechanism (40, 70) for driving,
The drive unit (27c) is configured to reciprocate linearly in the vertical direction perpendicular to the feed direction (P),
The link mechanism (40, 70) is configured to transmit the linear reciprocating motion of the driving unit (27c) to the sequin tape (T) by changing the linear reciprocating motion to the motion in the feeding direction (P). Sequin tape feeder.   The drive device (10) includes a drive motor (11) that reciprocally rotates the motor shaft (12), and a reciprocating rotational motion of the motor shaft (12) changed to a linear reciprocating motion in the vertical direction. 27. The sequin tape feeder according to claim 1, comprising a drive link (20) for transmitting to 27c). The drive unit (27c) is a drive slit (27c) extending in the feed direction (P), and the input unit (41a, 71a) is a lever (41, 41) constituting a part of the link mechanism (40). 71) are input shafts (41a, 71a) that reciprocate in the circumferential direction as the levers (41, 71) swing, and are connected to the drive slit (27c) with the input shafts (41a, 71a). 41a, 71a) are inserted,
When the drive slit (27c) is linearly reciprocated in the vertical direction, the input shaft (41a, 71a) is reciprocated in the circumferential direction to move up and down together with the drive slit (27c). The sequin tape feeding device according to claim 1, wherein the sequin tape feeding device slides in the feeding direction (P) within the drive slit (27 c).

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