TWM575816U - Automatic sewing machine with thread clamping mechanism - Google Patents

Abstract

The automatic sewing machine with the clamping mechanism includes: a sewing machine body, a wire clamping mechanism, a hook line mechanism and a controller, the sewing machine body has a needle that can move, and the wire clamping mechanism has two clamps, and the two clamps can be selectively selected. Clamped or released on a needle thread that is placed on the needle. The hook line mechanism has a movable hook line member. The hook line member can move the upper thread between the two clamps. In addition, the controller can control one of them. The clamp and the hook wire are moved, so that when the sewing work is completed for the sewing material and the upper thread is cut, the hook wire will pass the upper thread through the clamping mechanism, so that the two clamps are clamped to the upper thread. When the machine is used for the next sewing operation, the controller will control the two clamps to be temporarily clamped to the upper thread to prevent the upper thread from being separated from the needle, and the upper thread can be surely stitched to the sewing material to stabilize the seam quality.

Description

Automatic sewing machine with wire clamping mechanism

The present invention relates to an automatic sewing machine having a thread clamping mechanism, and more particularly to an automatic sewing machine that prevents a needle thread from coming off a needle when a sewing operation is performed.

The sewing machine mainly penetrates several layers of sewing materials through the upper thread, allowing several layers of sewing materials to be combined with the upper thread and the lower thread, and as the demand function continues to evolve, the sewing machine currently on the market has various additional functions. The sewing machine with various additional functions can be applied to the sewing work of different sewing materials.

However, in order to increase the number of finished products, the mass-produced sewing materials are currently sewn by a computer sewing machine to shorten the working time, so that the computer sewing machine can control the needle and the sewing object to move according to the sewing path. After the sewing operation is completed, the computer sewing machine controls the thread cutting mechanism to automatically cut the upper thread and the lower thread. However, after the thread cutting device cuts the upper thread, the upper thread is still worn on the needle. Pinhole, however, the upper thread will be separated from the needle hole of the needle at any time, so that when the computer sewing machine performs the next sewing operation, the upper thread may be separated from the needle hole of the needle or the upper thread is pulled out. When the length of the needle thread outside the needle hole is too short, and the needle is opened for sewing work, the upper thread cannot be interwoven with the bottom thread, which may affect the quality of the sewing.

The main purpose of this creation is that when the sewing machine body begins to sew the sewn body, the upper thread will still pass through the needle to avoid disengagement from the needle, and the upper thread can be surely sewn to the sewn material to stabilize the sewn product.

The secondary purpose of this creation is that when the hook line is not hooked to the upper thread, the hook line will be far away from the operating space of the sewing machine body, so that the hook line does not hinder the seamper from seeing the sight of the needle stitching the seam.

In order to achieve the above object, the present invention relates to an automatic sewing machine having a wire clamping mechanism. The automatic sewing machine having a wire clamping mechanism includes: a sewing machine body, a wire clamping mechanism, a hook line mechanism, and a controller. The sewing machine body has a movable needle, the needle is threaded, and the wire clamping mechanism is coupled to the sewing machine body and has two clamps, one of the fasteners being capable of being opposite to the other The clamp is moved so that the two clamps can be selectively clamped or released to the upper thread.

The hook line mechanism is connected to the sewing machine body and has a freely movable hook line member, wherein the hook line member can be in a passing position passing through the wire clamping mechanism and a hooking position for hooking the upper thread Moving back and forth so that the upper thread can be driven by the hooking member to pass through the clamping mechanism, and the controller is electrically connected to the clamping mechanism and the hooking mechanism, and can move on the needle And then controlling the two clamps to be released on the upper thread, and the controller can control the hook line to drive the upper thread through the clamping mechanism after the needle stops moving, and then control the clamping of the two clamps. On the above line.

The sewing machine body further has a middle presser foot. In the preferred embodiment, the intermediate presser foot has a pinhole through which the needle passes, and the pinhole is outwardly recessed to form a communication hole, so that the upper thread can be The pinhole is moved through the communication hole.

One of the two clamps is provided with an opening through which the upper thread passes and a restriction ring surrounding the opening, and the restriction ring prevents the upper thread from being separated from the opening, and the clip is When the firmware is moved, one of the clamps covers a portion of the opening such that the upper thread passes through the remaining portion of the opening.

In addition, the wire clamping device further includes a wire clamping driving source connected to the controller and a wire clamping connector mounted on the wire drawing driving source, wherein the clamping wire linking member and one of the clamping members are provided with an energy a switching member for changing a moving direction, wherein when the clamping driving source drives the clamping link to move along a first direction, one of the clamping members passes through the switching member along a direction opposite to the first direction Moving in two directions, in a preferred embodiment, the central portion of the switching member has a pivoting portion pivotally coupled to the sewing machine body, and is movably assembled at the both ends to the clamping link and one of the clips The firmware rotates the switching member with the pivoting portion as an axis when the clamping link is moved in the first direction.

Furthermore, the needle is located in an operation space formed on the sewing machine body, and when the hook line is located at the hook line position, a part of the hook line is located inside the operation space, and the hook is When the wire member is moved from the wearing position to the retracted position, the hooking member is away from the needle, so that the hooking member is not located inside the operating space.

Finally, the hook line mechanism further has a hook line seat fixed to the sewing machine body, the hook line seat is provided with an arcuate groove that is movably assembled to the hook line member, and the hook line member can be concave along the curved shape. The groove is curved in an arc.

It can be seen from the above description that the present invention is characterized in that the controller can control at least one of the clamps to move according to whether the needle moves or not, so that the two clamps can be selectively clamped or released to the upper thread, thereby aiming at one of the machines. When the sewing material completes the sewing operation, the hook wire will drive the upper thread between the two clamps, so that the controller controls the two clamps to be clamped to the upper thread, and the needle then sewn the other sewing material. During operation, the controller controls the two clamps to be clamped to the upper thread to prevent the upper thread from being disengaged from the needle, and the upper thread can be surely stitched to the sewing material to stabilize the seam quality.

In addition, when the hook line member is moved to the retracted position, the hook line member can avoid the operation space of the sewing machine body, so that the hook line member does not hinder the sewn person from seeing the line of sight of the sewing machine sewing the sewing object.

In order to further understand the structure, use and characteristics of this creation, we have a deeper and clearer understanding and understanding. The preferred embodiment is described below with reference to the following:

Referring to FIG. 1 and FIG. 2, the automatic sewing machine 1 having a wire clamping mechanism in the first preferred embodiment is mainly composed of a sewing machine body 10, a wire clamping mechanism 20, a hook line mechanism 30 and a controller. 40, as shown in FIG. 1, the sewing machine body 10 has a front end 11, a pillar 12 and a base 13 three parts, and an operating space 14 is formed between the front head 11, the pillar 12 and the base 13, wherein the front end The upper portion of the 11 is provided with an upper shaft (not shown), and the upper shaft can drive a needle 15 and a middle presser foot 16 to reciprocate inside the operating space 14, and the front end 11 is connected to one inside the operating space 14. The connecting frame 17 has a needle plate 18 and a line device 19 in sequence below the base 13. In this embodiment, the intermediate presser foot 16 has a pinhole 161 through which the needle 15 passes.

Referring to FIG. 2 and FIG. 3 , the wire clamping mechanism 20 has a clamping unit 21 and a clamping driving unit 22 . The clamping unit 21 has a first clamping member 211 fixedly connected to the connecting frame 17 and a first a second clamping member 212 on one side of the clamping member 211, the second clamping member 212 is movably assembled to the connecting frame 17 to enable the second clamping member 212 to move relative to the first clamping member 211, wherein the second clamping member 212 A portion forms an opening 212a, and the remaining portion of the second holder 212 forms a confinement ring 212b surrounding the opening 212a.

As shown in FIG. 3, the clamping line driving unit 22 has a clamping driving source 221 mounted on the connecting frame 17 and a clamping link 222 connected to the clamping driving source 221, and the clamping driving source 221 can drive the clamping line linkage. The member 222 is linearly moved, and a switching member 223 capable of changing the moving direction is disposed between the clamping link 222 and the second clamping member 212. The central portion of the switching member 223 is defined as a pivoting portion 223a and is pivotally connected. An assembly portion 223b is respectively disposed on opposite sides of the portion 223a, wherein the pivot portion 223a is pivotally connected to the connecting frame 17 of the sewing machine body 10, and the two assembly portions 223b are respectively movably assembled to the clamping link 222 and the second clamping member. 212.

Referring to FIG. 4A, the wire drive source 221 of the wire drive unit 22 drives the wire link linkage 222 of the wire drive unit 22 to move along a first direction D1, so that the wire link 222 is away from the wire. The driving source 221 is configured such that the switching member 223 rotates clockwise along the direction of the arrow in the drawing with the pivoting portion 223a as an axis, and the switching member 223 drives the second clamping member 212 along a direction opposite to the first direction D1. The second direction D2 is moved to move the second clamping member 212 relative to the first clamping member 211, so that the first clamping member 211 covers the opening 212a of the second clamping member 212, and vice versa, as shown in FIG. 4B. The driving source 221 drives the clamping link 222 to move along the second direction D2, so that the switching member 223 rotates counterclockwise along the direction of the arrow in the figure with the pivoting portion 223a as the axis, thereby driving the switching member 223. The second clamp member 212 is moved along the first direction D1, so that the range in which the first clamp member 211 is covered by the opening 212a is gradually reduced.

Referring to FIG. 5, the hook line mechanism 30 has a hook line unit 31 and a hook line driving unit 32. The hook line unit 31 has a hook line seat 311 connected to a support mounted on the connecting frame 17. The frame 33 is assembled to the front end 11 of the sewing machine body 10 via the connecting frame 17 and the support frame 33, wherein the hook line seat 311 is connected to a fixed hook line cover plate 312, and is recessed to form an arc. The groove 313 is formed, and the arcuate groove 313 is movably assembled with a hook line member 314. The hook line member 314 has a hook groove 314a and is movable relative to the hook line seat 311 so that the hook line member 314 can follow the arc. The groove 313 is oscillated in an arc shape, so that the hook groove 314a can be selectively moved away from or close to the hook wire holder 311. However, the hook line driving unit 32 has a hook line driving source 321 connected to the hook line holder 311 and a connection. The hook line driving source 321 is mounted on the support frame 33 and can move the hook line linkage 322 to move.

Referring to FIG. 6A, the hook line driving source 321 of the hook line driving unit 32 drives the hook line linking member 322 of the hook line driving unit 32 to extend outward, so that the hook line linking member 322 drives the hook line member 314 of the hook line unit 31. Close to the needle 15 of the sewing machine body 10, and then a part of the hooking member 314 is located inside the operating space 14 of the sewing machine body 10. Conversely, as shown in FIG. 6B, the hook line driving source 321 causes the hook line linking member 322 to contract inward. The hook line linkage 322 can drive the hook wire member 314 away from the needle pin 15, and the hook wire member 314 can be retracted to the inside of the curved groove 313.

1 and 2, the controller 40 is located below the sewing machine body 10, wherein when the needle 15 is moved, the controller 40 can control the second clamp 212 of the clamping unit 21 to move, and When the needle 15 stops moving, the controller 40 can first control the hook member 314 of the hook line unit 31 to move, and then control the second clamp member 212 to move.

In this embodiment, the controller 40 is mounted on the sewing machine body 10 and electrically connected to the clamping drive source 221 of the clamping mechanism 20, and the controller 40 can control the second clamping member 212 according to whether the needle 15 is moved. The first clamping member 211 is moved relative to the first clamping member 211. In this embodiment, when the upper shaft driving needle 15 and the intermediate pressing foot 16 are moved, the controller 40 controls the clamping driving source 221 of the clamping driving unit 22 to drive the clamping member. The wire linkage 222 of the wire drive unit 22 moves along the second direction D2, so that the second clamp 212 of the wire clamping mechanism 20 can move along the first direction D1, and vice versa, when the needle 15 and the intermediate presser foot When both of the movements of 16 are stopped, the controller 40 controls the gripping drive source 221 to move the gripper linkage 222 in the first direction D1 to move the second gripper 212 in the second direction D2.

The controller 40 is electrically connected to the hook line driving source 321 of the hook line mechanism 30, and the controller 40 can control the hook line driving source 321 to operate according to whether the first clamping member 211 covers the opening 212a of the second clamping member 212. And moving the hooking member 314 of the hook line unit 31 through the hook line driving source 321 , wherein when the second clamping member 212 of the clamping unit 21 moves along the first direction D1, the clamping unit 21 The first clamping member 211 does not cover the opening 212a. At this time, the controller 40 can control the hook line driving source 321 to drive the hook line linkage 322 to extend outward or inward, so that the hooking member 314 faces the needle. The direction of 15 is moved or moved away from the needle 15 to pass the hook member 314 through the opening 212a of the second clamp 212, and vice versa, when the second clamp 212 is along the second direction D2. When moving, the first clamping member 211 will cover the opening 212a, and the controller 40 will control the hook line driving source 321 to stop operating, thereby stopping the hooking member 314.

Referring to FIG. 7A, before the sewing operation, a line 50 is threaded through the needle 15 of the sewing machine body 10 and the opening 212a of the second clamp 212, so that the upper thread 50 is divided into one according to the needle 15. Passing through the first section 51 of the opening 212a and a second section 52 connected to the sewing machine body 10, and when the upper thread 50 is passed through the opening 212a, because the limiting ring 212b of the second clamping member 212 is surrounded In the opening 212a, the limiting collar 212b can prevent the first section 51 of the upper thread 50 from being disengaged from the opening 212a. Subsequently, the controller 40 controls the clamping driving source 221 of the clamping driving unit 22 to operate, allowing the clamping The driving source 221 moves the second clamping member 212 along the second direction D2 via the clamping link 222 and the switching member 223, so that both the first clamping member 211 and the second clamping member 212 are clamped together on the upper thread 50. The first section 51 allows the first section 51 of the upper thread 50 to be clamped inside the opening 212a. At this time, the first clamp 211 covers a part of the opening 212a, and the first area of the upper thread 50 The segment 51 will pass through the remaining portion of the opening 212a, and at the same time, the controller 40 controls the hook of the hook line driving unit 32. Operating the drive source 321 is stopped, so that the hook member 31 hook line wire unit 314 stops.

Referring to FIG. 7B, when the needle 15 of the sewing machine body 10 starts the sewing operation, the needle 15 reciprocates up and down through the rotating upper shaft, and the first section 51 of the upper thread 50 passes through the machine. The needle 15 is inserted into a slat 60 so that the upper thread 50 is interlaced to a bottom line 53 to form a seam on the surface of the slat 60. When the surface of the slat 60 forms two seams or more, the controller 40 controls The clamping driving source 221 of the clamping driving unit 22 drives the second clamping member 212 of the clamping unit 21 to move along the first direction D1, so that both the first clamping member 211 and the second clamping member 212 release the upper thread 50. The first section 51 allows the upper thread 50 to be securely sewn to the seam 60 to stabilize the seam quality.

Referring to FIG. 7C and FIG. 7D, the upper shaft continues to rotate, so that the needle 15 drives the upper thread 50 to continue interlacing to the bottom line 53, and when the needle 15 has finished sewing the sewing work of the sewing object 60. , the upper shaft stops rotating, so that both the needle 15 and the intermediate presser foot 16 stop moving, so that the needle tip of the needle 15 and the intermediate presser foot 16 form a separation distance, and then the tangential device 19 sets the upper thread 50 with The bottom line 53 is simultaneously cut so that the thread ends of both the upper thread 50 and the lower thread 53 remain below the needle plate 18.

As shown in FIG. 7D, since the first clamping member 211 of the clamping unit 21 does not cover the opening 212a of the second clamping member 212, the controller 40 can control the hook line driving source 321 of the hook line driving unit 32 to drive the hook line. The hook line linkage 322 of the driving unit 32 extends outward, so that the hook line member 314 swings along the curved groove 313, and because the first clamp 211 of the clamping unit 21 is not covered by the second clamp The opening 212a of the 212, and further the hooking member 314, moves through the opening 212a to a hooking position P1, wherein a portion of the hooking member 314 is located in the sewing machine body 10 when the hooking member 314 is in the hooking position P1. The operating space 14 is such that the hooking member 314 passes between the needle tip of the needle 15 and the intermediate pressing leg 16, so that the hook groove 314a of the hooking member 314 exceeds the center of the needle, so that the hook groove 314a is hooked on The first section 51 of the upper thread 50.

Referring to FIG. 7E and FIG. 7F, the controller 40 controls the hook line driving source 321 to cause the hook line linkage 322 to contract inwardly, so that the hook line linkage 322 drives the hook line member 314 to move from the hook position P1 to Once the position P2 is inserted, the hook member 314 pulls the first section 51 of the upper thread 50 out of the pinhole 161 of the intermediate presser foot 16, wherein the hooking member 314 is when the hooking member 314 is in the wearing position P2. The first section 51 of the upper thread 50 is passed through the opening 212a of the second clamp 212 such that the first section 51 of the upper thread 50 passes through the thread clamping mechanism 20.

Referring to FIG. 7G, the hook line driving source 321 causes the hook line linkage 322 to continue to contract inwardly, so that the hook line linkage 322 drives the hook line member 314 to move from the wearing position P2 to a retracted position P3, wherein When the wire member 314 is in the retracted position P3, the wire end of the first segment 51 is hung on the opening 212a of the second clamp 212, and the controller 40 controls the wire drive source 221 of the wire drive unit 22 to operate. The clamping device 221 is caused to move the second clamping member 212 along the second direction D2 via the clamping link 222 and the switching member 223, so that the first clamping member 211 and the second clamping member 212 are both clamped together. The first section 51 of the upper thread 51, however, when the hook line 314 is in the retracted position P3, both the first clamp 211 and the second clamp 212 are simultaneously clamped to the first section 51 of the upper thread 50 only For convenience of description, that is, during the process of moving the hooking member 314 from the wearing position P2 to the retracting position P3, the controller 40 can control the clamping driving source 221 to drive the second clamping member 212 to move, so that the first clamping member is moved. Both the 211 and the second clamps 212 can be clamped to the upper thread 50 before the hook member 314 is moved to the retracted position P3. The first section 51, in turn, prepares for the next sewing operation.

Referring to FIG. 8, in the second preferred embodiment, the difference from the first preferred embodiment is the intermediate presser foot 16. As shown, the intermediate presser foot 16 further forms a communication communication with the pinhole 161. The hole 162 allows the pinhole 161 to communicate with the operation space 14 of the sewing machine body 10 via the communication hole 162. As shown, the communication hole 162 is formed by recessing from the pin hole 161, so that the upper thread 50 can pass through the communication hole 162. Moved out of the inside of the pinhole 161.

Referring to FIG. 9, when the first clamping member 211 and the second clamping member 212 are both clamped together on the first section 51 of the upper thread 50, then the upper shaft driving needle 15 starts to sew the seam 60. When the sewing operation is performed, when the upper thread 50 forms two or more seams on the surface of the slat 60, if the controller 40 has not controlled the thread clamping unit 21 of the thread clamping mechanism 20 to release the upper thread 50, the upper thread 50 may pass through the communication hole 162. While leaving the pinhole 161, the first section 51 of the upper thread 50 is not pulled tight to avoid displacement of the slat 60.

The above-mentioned embodiments are only used to facilitate the description of the present invention and are not limited thereto. In the scope of the creation of the creation, all kinds of simple deformations and modifications made by the skilled person in this industry according to the scope of the patent application and the new description of the creation should still be It is included in the scope of the following patent application.

1‧‧‧Automatic sewing machine with thread clamping mechanism

10‧‧‧Sewing machine body

11‧‧‧ head

12‧‧‧ pillar

13‧‧‧Base

14‧‧‧Operating space

15‧‧‧ needle

16‧‧‧ Medium presser foot

161‧‧‧ pinhole

162‧‧‧Connected holes

17‧‧‧Connecting frame

18‧‧‧ needle board

19‧‧‧Thread cutting device

20‧‧‧Clamping mechanism

21‧‧‧Clamping unit

211‧‧‧First clamp firmware

212‧‧‧Second clamp firmware

212a‧‧‧Opening

212b‧‧‧Restricted ring

22‧‧‧Clamping drive unit

221‧‧‧Clamping drive source

222‧‧‧Clamping linkage

223‧‧‧Switching parts

223a‧‧‧Pivot

223b‧‧‧Assembly Department

30‧‧‧ hook line mechanism

31‧‧‧ hook line unit

311‧‧‧ hook line seat

312‧‧‧Hook wire cover

313‧‧‧Arc groove

314‧‧‧ hook line

314a‧‧‧Check groove

32‧‧‧Hook line drive unit

321‧‧‧ hook line drive source

33‧‧‧Support frame

322‧‧‧Hook line linkage

40‧‧‧ Controller

50‧‧‧Face

51‧‧‧First section

52‧‧‧second section

53‧‧‧ bottom line

60‧‧‧seam

D1‧‧‧ first direction

D2‧‧‧ second direction

P1‧‧‧ hooked position

P2‧‧‧ wearing location

P3‧‧‧Returned position

1 is a perspective view of a first embodiment of the automatic sewing machine having a wire clamping mechanism; FIG. 2 is a schematic view showing the wire clamping mechanism and the hooking mechanism mounted on the sewing machine body; FIG. 3 is an exploded view of the wire clamping mechanism; 4A and FIG. 4B are schematic views of the movement of the second clamp relative to the first clamp; FIG. 5 is an exploded view of the hook line mechanism; FIGS. 6A and 6B are schematic views of the movement of the hook line member; Fig. 7B is a schematic view showing the release line of the wire clamping unit; Fig. 7C is a schematic view showing the hook line member at the hooking position; Fig. 7D is an enlarged view of the portion A of Fig. 7C; Fig. 7E is a hook line Figure 7F is an enlarged view of a portion B of Figure 7E; Figure 7G is a schematic view of the hook member in a retracted position; Figure 8 is a perspective view of the intermediate presser in a second preferred embodiment; Fig. 9 is a schematic view showing the sewing operation of the second preferred embodiment.

Claims (7)

An automatic sewing machine with a thread clamping mechanism, comprising: a sewing machine body having a movable needle, the needle is threaded by a thread; a thread clamping mechanism connected to the sewing machine body and having two clamps, wherein One of the above-mentioned clamps can be moved relative to the other of the above-mentioned clamps so that the two clamps can be selectively clamped or released to the upper thread; a hooking mechanism is connected to the sewing machine body and has a freely movable a hook line member, wherein the hook line member can move back and forth between a piercing position passing through the wire clamping mechanism and a hooking position hooking the upper thread line, so that the upper thread can be driven by the hook line member a controller, electrically connected to the wire clamping mechanism and the hook line mechanism, and capable of controlling the release of the two clamps to the upper thread after the needle is moved, and the controller can be After the needle stops moving, the hook line member is controlled to drive the upper thread to pass through the wire clamping mechanism, and then the two clamp members are controlled to be clamped to the upper thread. The automatic sewing machine with a thread clamping mechanism according to Item 1, wherein one of the two clamps has an opening through which the upper thread passes and a restriction ring surrounding the opening, and the above The restriction ring prevents the upper thread from coming off the opening. The automatic sewing machine with a thread clamping mechanism according to claim 2, wherein, when at least one of the fasteners is moved through the controller, one of the clamps covers a part of the opening, so that the upper thread passes through Too much of the remainder of the above opening. The automatic sewing machine with a thread clamping mechanism according to claim 1, wherein the wire clamping device further comprises a wire driving source connected to the controller and a wire linkage connected to the wire driving source. A switching member capable of changing a moving direction is disposed between the clamping line linking member and one of the clamping members, wherein the clamping driving source drives the clamping link to move along a first direction, and one of the clamping members Moving through the switching member in a second direction opposite to the first direction. The automatic sewing machine with a thread clamping mechanism according to Item 1, wherein the needle is located in an operation space formed in the sewing machine body, and when the hook line is located at the hook line position, the hook line member If a part of the hook line is located inside the operation space, when the hook line is moved from the wearing position to a retracted position, the hook line is away from the needle, so that the hook line is not located in the operation space. internal. The automatic sewing machine with a thread clamping mechanism according to Item 1, wherein the hook line mechanism further has a hook line seat fixed to the sewing machine body, and the hook line seat is provided with an arc that is movably assembled to the hook line member. The groove is shaped, and the hook line member can be arcuately swung along the arc groove. An automatic sewing machine having a thread clamping mechanism according to claim 1, wherein the sewing machine body further has a middle presser foot, the intermediate presser foot having a pinhole through which the needle passes, and the pinhole is outward The recess forms a communication hole through which the upper thread can be moved through the communication hole.