JP3205558U - Sewing machine feed dog feeding device - Google Patents

Abstract

The present invention provides a cloth feed dog feeding device for a sewing machine capable of adjusting a longitudinal displacement distance between a first cloth feed dog bar and a second cloth feed dog bar. In a cloth feed dog feeding device of a sewing machine, a rocking member has a first rocking rod and a first cloth feed dog pushing / pulling bar is connected to the first cloth feed dog and the first rocking rod. The shaft rotation drive member 16 is rotatably connected to the drive member fixed shaft 133, and the twin shaft transmission rod 17 is connected to the first swing rod and the shaft rotation drive member to adjust the tooth pitch. The member 18 and the transmission connecting rod 19 are rotatably connected to the drive member fixed shaft, and the transmission connecting rod is connected to the biaxial transmission rod. As a result, in the cloth feed dog feeding device, the tooth pitch adjusting member 18 moves the transmission connecting rod 19 so that the front-rear displacement distances of the first and second cloth feed tooth bars 11 and 12 are adjusted together. [Selection] Figure 4

Description

  The present invention relates to a cloth feed dog feeding device of a sewing machine, and more particularly to a cloth feed dog feeding device of a sewing machine capable of adjusting a front-rear displacement distance between a first cloth feed tooth bar and a second cloth feed tooth bar.

  Recently, with the continuous development of textile industry technology, different kinds of clothing materials are gradually developed and manufactured in traditional fabrics. As the economic level of the world rises, people's own demands for clothing materials and clothing modeling will gradually increase, so the structural design of the sewing machine itself must be gradually improved to deal with the complexity of today's clothing design. I must.

  Specifically, all conventional sewing machines have a single-fabric feed dog structure design in accordance with the various garment outline designs that change the sewing pitch of the sewing machine. When using such a sewing machine, In this case, it is possible to change the movement width of the cloth fabric through the adjustment of the travel distance of the cloth feed dog, and further to form the sewing line pitches having different widths on the cloth fabric by the movement amount of the cloth fabric. However, due to the increasing complexity of garment design, the above-described sewing machine having a single cloth feed dog has not been sufficient to cope with the sewing work for the outline design of various garments today. Therefore, the manufacturer of the sewing machine has developed a sewing machine having a front cloth feed dog and a rear cloth feed dog, and has completed the function of adjusting to the sewing line pitch that can be achieved by the single cloth feed dog by the rear cloth feed dog of the sewing machine. At the same time, a different amount of cloth is introduced to each of the rear cloth feed teeth through the front cloth feed dog (referred to as the differential feed ratio). It corresponds to the external design.

  Taiwan Utility Model Registration No. M384199 discloses an externally adjustable feed adjustment device including an adjustment panel, an adjustment lever, an interlocking device, a swinging member, and a front moving tooth interlocking rod. The adjustment panel includes a through hole and a position limiting device in which a movement space is formed. The adjustment lever has a coupling portion installed corresponding to the through hole and a pulling portion provided in the moving space. One end of the interlocking device is provided in the through hole and is fixedly coupled to the coupling portion. The swing member is coupled to the interlocking device. The front moving tooth interlocking rod is coupled to the swing member. As a result, when actually using the externally adjustable feed adjusting device, the user rotates the pulling portion to move the interlocking device to be coupled with the swinging member, and further, Through the angle change, the horizontal reciprocation shift amount of the front moving tooth interlocking rod is adjusted, so that the cloth introduction amount is changed and the sewing operation of the sewing machine is performed.

  In addition, Taiwan Utility Model Registration No. M2010508122 discloses a feeding device for a feeding arm type sewing machine. The feed arm type sewing machine has a cylindrical body, a machine base, and an arm, and the feed device includes a main feed base, a first differential feed base, a second differential feed base, a main feed dog, and a first feed dog. A differential feed dog, a second differential feed dog, a first differential feed amount adjusting device, a second differential feed amount adjusting device, and a main differential feed amount adjusting device; The main feed base, the first differential feed base, and the second differential feed base are installed in the cylinder in parallel, and the main feed dog is attached to the front end of the main feed base. The first differential feed dog is attached to the front end of the first differential feed base, and the second differential feed dog is attached to the front end of the first differential feed base. Furthermore, when the feed arm type sewing machine and the feed device are used together, the main differential feed amount adjusting device is configured to move the longitudinal feed amount (hereinafter referred to as the main feed amount) on the main feed dog and the main feed base. The first differential feed amount adjusting device is a front-rear direction movement amount (hereinafter referred to as a first difference) in the first differential feed dog and the first differential feed base. The second differential feed amount adjusting device is configured to adjust the amount of movement in the front-rear direction of the second differential feed dog and the second differential feed base (hereinafter, referred to as “moving feed amount”). This is for adjusting the second differential feed amount). In this way, the delivery arm type sewing machine can produce a flat or creased finish after the fabric is sewn by the difference in the main feed amount, the second differential feed amount, and the second differential feed amount.

Taiwan Utility Model Registration No. M384199 Taiwan utility model registration M201308122

  However, in the adjusting device of utility model registration No. M384199 which is the conventional technical content, the horizontal reciprocating displacement of the front moving tooth interlocking rod is adjusted by the angle of the swinging member. The overall displacement travel cannot be adjusted for the interlocking rod and the rear moving tooth interlocking rod. On the other hand, in the feeding device of utility model registration M201308122, the main feed amount and the first differential feed amount are adjusted by the main differential feed amount adjusting device, the first differential feed amount adjusting device and the second differential feed amount adjusting device. And only the second differential feed amount is adjusted, and the previous main feed amount, the first differential feed amount, and the second differential feed amount cannot be collectively adjusted. Furthermore, in the technical content of utility model registration No. M201008122, the main differential feed amount adjusting device, the first differential feed amount adjusting device and the second differential feed amount adjusting device are installed in the feeding device. Becomes too complicated.

  The main purpose of the present invention is to solve the conventional problem that the adjustment of the shift distance for the front moving teeth and the rear moving teeth cannot be performed together with the conventional implementation method and the design structure is too complicated. is there.

  In order to achieve the above object, a cloth feed dog feeding device for a sewing machine according to the present invention includes a first cloth feed dog bar, a second cloth feed dog bar installed in parallel with the first cloth feed dog bar, A swinging member rotatably connected to the moving member fixed shaft and provided with a first swinging rod and a second swinging rod on both sides, and one end rotatably connected to the middle stage of the first cloth feed dog bar The first cloth feed dog push-pull bar having the other end rotatably connected to the first swing bar and the first torque type shaft lever rotatably connected to the middle stage, and the second end A second cloth feed is rotatably connected to the middle stage of the cloth feed tooth bar, the other end is rotatably connected to the second swing bar, and the second torque type shaft lever is rotatably connected to the middle stage. A shaft rotation drive member that is rotatably connected to the tooth push / pull rod, the drive member fixed shaft, and has a support arm, and one end is A biaxial conduction rod that is pivotally connected to the first swing rod and the other end is connected to the support arm via a guide member, and is rotatably connected to the drive member fixed shaft, and a force And a tooth pitch adjusting member that rotates the driving member fixed shaft, a first support rod and a second support rod, and one end of the first support rod is rotatably connected to the driving member fixed shaft. An end is connected to the second support rod, and an end of the second support rod that is not connected to the first support rod is rotatably connected to a middle stage of the twin shaft transmission rod, and is connected to the tooth pitch adjusting member. And a conductive connecting rod that adjusts the longitudinal displacement distance between the first cloth feed tooth bar and the first cloth feed tooth bar when moved.

  In an embodiment, the tooth pitch adjusting member includes a disk body, a plurality of convex ribs provided on a side of the disk body facing the shaft rotation driving member, and a fixing rod corresponding to the plurality of convex ribs, An elastic member provided on the fixing rod and supporting and fixing the fixing rod to the convex rib. Furthermore, the said tooth pitch adjustment member has a scale gauge provided in the opposite side to the said shaft rotation drive member of the said disk body. Specifically, each of the plurality of convex ribs is a chet.

  In an embodiment, the guide member includes a first component and a second component combined with the first component, and the communication for communicating the support arm between the first component and the second component. Have a mouth.

  In an embodiment, the first cloth feed dog bar has a first cloth feed dog, and the second cloth feed dog bar has a second cloth feed dog. Furthermore, a first cloth feed dog adjusting bar is connected to one end of the first torque type shaft lever, and the first cloth feed dog adjusting bar is provided on the first index panel. Further, a second cloth feed dog adjusting bar is connected to one end of the second torque type shaft lever, and the second cloth feed dog adjusting bar is provided on the second index panel. More specifically, the sewing machine has a transmission main shaft, a first lift rod, and a second lift rod, and the transmission main shaft has a first eccentric shaft portion and a second eccentric shaft portion, Both ends of the first lift rod are rotatably connected to the first eccentric shaft portion and the shaft rotation driving member, and both ends of the second lift rod are connected to the second eccentric shaft portion and the second cloth feed dog. It is rotatably connected to the rod.

  The above implementation method of the present invention has the following effects compared to the conventional implementation method.

  In the present invention, the drive member fixed shaft is moved through the tooth pitch adjusting member to rotate the first support rod in conjunction with the first support rod, and the first support rod is coupled with the second support rod in the biaxial transmission. By moving the bar and rotating the support arm clockwise or counterclockwise, the sewing machine is positioned at a different position of the support arm so that the first cloth feed dog bar and the first The front and rear transition distances during operation of the two cloth feed tooth bars are collectively limited, and the introduction amount of the first cloth feed tooth bar and the second cloth feed tooth bar with respect to the cloth fabric is slightly adjusted. Thereby, in the conventional implementation method, the front moving tooth and the rear moving tooth cannot collectively adjust the shift distance, and the problem that the design structure is too complicated can be solved.

It is an external appearance perspective view which shows the internal mechanism of the sewing machine to which the cloth feed dog feeder which concerns on this invention is applied. 1 is an external perspective view of a cloth feed dog feeding device according to the present invention. It is the external appearance perspective view seen from another angle of the cloth feed dog feeder which concerns on this invention. It is a disassembled perspective view of the cloth feed dog feeder which concerns on this invention. It is a side view (the 1) of the cloth feed dog feeder concerning the present invention. It is a side view (the 2) of a cloth feed dog feeder concerning the present invention. It is a side view (the 3) of the cloth feed dog feeder concerning this invention.

  Hereinafter, detailed description and technical contents of the present invention will be described with reference to the accompanying drawings.

  As shown in FIGS. 1 to 4, the present invention provides a cloth feed dog feeding device for a sewing machine. The cloth feed dog feeder 1 is installed inside the sewing machine 2. The cloth feed dog feeder 1 includes a first cloth feed tooth bar 11, a second cloth feed tooth bar 12, a swing member 13, a first cloth feed dog push / pull bar 14, and a second cloth feed dog push / pull. It includes a rod 15, a shaft rotation drive member 16, a twin shaft transmission rod 17, a tooth pitch adjusting member 18, and a transmission connecting rod 19.

  The first cloth feed tooth bar 11 and the second cloth feed tooth bar 12 are installed in parallel, and the first cloth feed tooth bar 111 is installed at the end of the first cloth feed tooth bar 11. The 2nd cloth feed dog 121 is installed in the end of.

  A first swing bar 131 and a second swing bar 132 are provided on both sides of the swing member 13, respectively, and the first swing bar 131 and the second swing bar 13 are installed at a parallel interval, The swing member 13 is rotatably connected to a swing member fixed shaft 133 disposed in the sewing machine 2, and the swing member 13 swings back and forth around the swing member fixed shaft 133.

  On the other hand, one end of the first cloth feed dog push-pull bar 14 is rotatably connected to the middle stage of the first cloth feed dog bar 11 and the other end is rotatably connected to the first swing bar 131. . The second cloth feed dog push-pull bar 15 has one end rotatably connected to the middle stage of the second cloth feed dog bar 12 and the other end rotatably connected to the second swing bar 132.

  More specifically, the swing member 13 includes a first rail 134 provided on the first swing bar 131 and a second rail 135 provided on the second swing bar 132. Further, the first cloth feed dog push / pull bar 14 has a first slide block 141 provided in the first rail 134, and the second cloth feed dog push / pull bar 15 is provided in the second rail 135. 2 slide blocks 151 are provided. Further, a first torque type shaft lever 142 is rotatably connected to the middle stage of the first cloth feed dog push / pull rod 14, and a second torque type shaft lever is connected to the middle stage of the second fabric feed tooth push / pull bar 15. 152 is rotatably connected.

  As described above, as shown in FIGS. 1 to 4, the shaft rotation driving member 16 has the support arm 161 and is rotatably connected to the driving member fixing shaft 162 assembled in the sewing machine 2 to fix the driving member. The shaft 162 is rotated about the axis. The biaxial transmission rod 17 has a guide member 171, one end is rotatably connected to the first swing rod 131, and the other end is connected to the support arm 161 via the guide member 171. In the embodiment, the guide member 171 includes a first part 172 and a second part 173, the first part 172 is rotatably connected to the biaxial transmission rod 17, and the first part 172, the second part 173, As a result, the communication port 174 for communicating the support arm 161 is formed.

  The tooth pitch adjusting member 18 is rotatably connected to one side of the driving member fixing shaft 162 and rotates the driving member fixing shaft 162 by receiving a force. More specifically, the tooth pitch adjusting member 18 includes a disk body 181, a plurality of convex ribs 182, a fixing rod 183, and an elastic member 184.

  The convex rib 182 is provided on the disk body 181 on the side facing the shaft rotation driving member 16. The shapes of the fixing rod 183 and the plurality of convex ribs 182 correspond to each other, and the elastic member 184 supports and fixes the fixing rod 183 to at least one of the plurality of convex ribs 182. In the embodiment, each of these convex ribs 182 is a ratchet, and the fixing rod 183 corresponds to the shape of a plurality of ratchets (that is, a plurality of convex ribs 182) and is fitted and fixed between any two ratchets. .

  On the other hand, the transmission connecting rod 19 has a first support rod 191 having one end rotatably connected to the drive member fixed shaft 162 and the other end rotatably connected to the second support rod 192, and the first support rod. One end that is not connected to 191 has a second support bar 192 that is rotatably connected to the middle stage of the biaxial transmission bar 17.

  Further, as shown in FIGS. 1 to 5, the sewing machine 2 includes a transmission main shaft 21, a first lift rod 22, and a second lift rod 23. As shown in FIGS. 2 and 3, the transmission main shaft 21 has a first eccentric shaft portion 211 and a second eccentric shaft portion 212. Both ends of the first lift rod 22 are rotatably connected to the first eccentric shaft portion 211 and the shaft rotation driving member 16. Both ends of the second lift rod 23 are rotatably connected to the second eccentric shaft portion 212 and the second cloth feed tooth bar 12.

  As described above, the transmission main shaft 21 moves the first lift rod 22 and the second lift rod 23 when the sewing machine 2 incorporating the cloth feed dog feeding device 1 is actually used. At this time, the second lift rod 23 that is rotatably connected to the second eccentric shaft portion 212 interlocks with the second cloth feed tooth bar 12 to perform front-rear displacement to introduce cloth cloth (not shown). ). At the same time, the first lift rod 22 rotatably connected to the first eccentric shaft portion 211 swings the shaft rotation driving member 16 up and down, and the support arm 161 is reciprocally displaced in the communication port 174, so that The first swing bar 131 is swung in conjunction with the transmission bar 17. The swing member 13 is displaced in the first rail 134 in conjunction with the first slide block 141 as the first swing bar 131 swings. Further, when the first slide block 141 is displaced in the first rail 134, the first cloth feed dog push-pull bar 14 moves the first cloth feed dog bar 11 back and forth and introduces the cloth material. Therefore, the sewing machine 2 operates the first cloth feed teeth 111 and the second cloth feed teeth 121 by the above operation, introduces the cloth material, and performs the sewing work on the cloth material.

  When the user wants to adjust the introduction amount of the cloth dough, the cloth feed dog feeding device 1 passes through the first torque type shaft lever 142 or the second torque type shaft lever 152, and the first cloth feed tooth bar 11 or the second cloth feed dog. The displacement travel distance of the rod 12 can be changed respectively, so that the introduction amount of the fabric can be greatly increased or decreased.

  In the embodiment, as shown in FIGS. 2 to 4, a first cloth feed dog adjusting bar 143 is connected to one end of the first torque type shaft lever 142, and the first cloth feed dog adjusting bar 143 is connected to the first index. Provided on panel 144. A second cloth feed dog adjusting bar 153 is connected to one end of the second torque type shaft lever 152, and a second cloth feed dog adjusting bar 153 is provided on the second index panel 154. Therefore, the user can digitize the adjustment of the displacement travel distance between the first cloth feed tooth bar 11 and the second cloth feed tooth bar 12 by the first index panel 144 and the second index panel 154. In addition, the applicant of the present invention describes, in Taiwan Utility Model Registration No. M1304106, “each adjustment operation of the displacement stroke distance between the first cloth feed tooth bar 11 and the second cloth feed tooth bar 12”. Therefore, the description is omitted.

  As a main technical feature of the present invention, the cloth feed dog feeding device 1 collectively adjusts the longitudinal displacement distance between the first cloth feed tooth bar 11 and the second cloth feed tooth bar 12 by the tooth pitch adjusting member 18. can do. When the user rotates the tooth pitch adjusting member 18, the tooth pitch adjusting member 18 moves the drive member fixing shaft 162, and the first support bar 191 rotates in conjunction with it, as shown in FIGS. The first support bar 191 moves the biaxial transmission bar 17 in conjunction with the second support bar 192 to rotate the support arm 161 clockwise or counterclockwise. As described above, the sewing machine 2 collectively limits the longitudinal displacement distance when the first cloth feed tooth bar 11 and the second cloth feed tooth bar 12 are operated by the guide member 171 being located at a different position of the support arm 161. The introduction amount of the first cloth feed tooth bar 11 and the second cloth feed tooth bar 12 with respect to the cloth fabric is slightly adjusted. Thereby, in the conventional implementation system, the displacement distance adjustment cannot be performed collectively for the front moving tooth and the rear moving tooth, and the problem that the design structure is too complicated can be solved.

  Furthermore, the cloth feed dog feeder 1 of the present invention can adjust the longitudinal displacement distance of the first cloth feed tooth bar 11 and the second cloth feed tooth bar 12 through the tooth pitch adjusting member 18. Therefore, in order to make the adjustment of the longitudinal displacement distance of the first cloth feed tooth bar 11 and the second cloth feed tooth bar 12 more accurate, in the embodiment, the tooth pitch adjusting member 18 includes the shaft rotation driving member 16 of the disk body 181. A scale gauge 185 is provided on the opposite side. As shown in FIGS. 2 to 4, the cloth feed dog feeding device 1 uses the scale gauge 185 to digitize the positions of the first cloth feed dog bar 11 and the second cloth feed dog bar 12, and thereby the first cloth feed dog 1. The longitudinal displacement distance between the bar 11 and the second cloth feed tooth bar 12 can be adjusted more accurately.

1: Cloth feed dog feeder 11: 1st Cloth feed tooth bar 111: 1st Cloth feed tooth 12: 2nd Cloth feed tooth bar 121: 2nd Cloth feed tooth 13: Oscillating member 131: 1st Oscillating bar 132 : Second swinging rod 133: swinging member fixed shaft 134: first rail 135: second rail 14: first cloth feed tooth push / pull rod 141: first slide block 142: first torque type shaft lever 143: first 1 cloth feed dog adjusting bar 144: first index panel 15: second cloth feed dog pushing / pulling bar 151: second slide block 152: second torque type shaft lever 153: second cloth feed dog adjusting bar 154: second index Panel 16: Shaft rotation drive member 161: Support arm 162: Drive member fixed shaft 17: Double shaft transmission rod 171: Guide member 172: First part 173: Second part 174: Communication port 18: Tooth pitch adjustment member 181: Disk Body 1 2: convex rib 183: fixed rod 184: elastic member 185: scale gauge 19: transmission connecting rod 191: first support rod 192: second support rod 2: sewing machine 21: transmission main shaft 211: first eccentric shaft portion 212: first 2 Eccentric shaft portion 22: First lift rod 23: Second lift rod

Claims (6)

A first cloth feed tooth bar;
A second cloth feed tooth bar installed in parallel with the first cloth feed tooth bar;
A swing member rotatably connected to the swing member fixed shaft and provided with a first swing bar and a second swing bar on both sides;
One end is rotatably connected to the middle stage of the first cloth feed tooth bar, the other end is rotatably connected to the first swing bar, and the first torque-type shaft lever is rotatable to the middle stage. A first cloth feed dog push-pull bar connected to
One end is rotatably connected to the middle stage of the second cloth feed tooth bar, the other end is rotatably connected to the second swing bar, and the second torque type shaft lever is rotatable to the middle stage. A second cloth feed dog push-pull bar connected to
A shaft rotation drive member rotatably connected to the drive member fixed shaft and having a support arm;
A biaxial transmission rod having one end pivotably coupled to the first swing rod and the other end coupled to the support arm via a guide member;
A tooth pitch adjusting member that is rotatably connected to the drive member fixed shaft and that rotates the drive member fixed shaft in response to a force;
A first support bar and a second support bar, wherein one end of the first support bar is rotatably connected to the drive member fixing shaft, and the other end is rotatably connected to the second support bar; One end of the second support rod not connected to the first support rod is pivotally connected to the middle stage of the biaxial transmission rod, and when the tooth pitch adjusting member is moved, the first cloth feed tooth rod and the second support rod are connected. A cloth feed dog feeding device for a sewing machine, comprising: a transmission connecting rod that adjusts a longitudinal displacement distance with the cloth feed dog bar.   The tooth pitch adjusting member includes a disc body, a plurality of convex ribs provided on a side of the disc body facing the shaft rotation driving member, a fixing rod corresponding to the plurality of convex ribs, and the fixing rod. The cloth feed dog feeding device for a sewing machine according to claim 1, further comprising an elastic member that is provided and supports and fixes the fixing rod to the plurality of convex ribs.   The said tooth pitch adjustment member has a scale gauge provided in the opposite side to the said shaft rotation drive member of the said disk body, The cloth feed dog feeding apparatus of the sewing machine of Claim 2 characterized by the above-mentioned.   The cloth feed dog feeding device for a sewing machine according to claim 3, wherein each of the plurality of convex ribs is a ratchet.   The guide member includes a first part and a second part combined with the first part, and has a communication port for communicating the support arm between the first part and the second part. The cloth feed dog feeding device for a sewing machine according to any one of claims 1 to 4, wherein the machine feed dog feeding device is a sewing machine.   The said 1st cloth feed dog bar has a 1st cloth feed dog, and the said 2nd cloth feed dog bar has a 2nd cloth feed dog, Any one of Claims 1 thru | or 4 characterized by the above-mentioned. The cloth feed dog feeder of the sewing machine according to 1.

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