Belt positioning sewing apparatus

Abstract

The utility model relates to sewing technical field, concretely is a kind of braid positioning sewing device, including presser foot and adjusting mechanism;Presser foot is provided with guide column, and the both ends of guide column are provided with limit block, and limit block is provided with pull cylinder;Adjusting mechanism includes the support frame being set on pull cylinder, the threaded cylinder being set on support frame, the screw being threadedly connected on threaded cylinder, two guide rods being penetrated and slidingly connected on support frame, the connecting frame being set on guide rod, the roller being rotatably connected on connecting frame, the rotary connecting piece being set on connecting frame and the firm component being set on support frame;Firm component includes the first magnet being set on guide rod, the plug block being inserted on support frame and the handle and second magnet being set on plug block;First magnet and second magnet magnetically connect.The utility model can adjust the position of roller according to the thickness of braid, so that roller can not only play good antiskid effect to braid, but also can avoid the problem of causing excessive wear and tear to braid.

Description

Technical Field

[0001] This utility model relates to the field of sewing technology, and in particular to a webbing positioning sewing device. Background Technology

[0002] Webbing positioning sewing devices are specialized tools in the sewing machinery field. Their function is to solve problems such as easy displacement of webbing and skewed stitches in traditional manual sewing through technical means, so as to achieve precise positioning in an automated or semi-automated manner, reduce dependence on skilled workers, and reduce material waste caused by rework.

[0003] Chinese Patent No. CN216639883U discloses a positioning pull tube device for shirt collar webbing, including a presser foot, limiting edges at both ends of the bottom of the presser foot, a guide post on one side of the presser foot, limiting blocks at both ends of the guide post, a guide rod on one side of the two sets of limiting blocks near each other, a pull tube on one side of the two sets of limiting blocks, a winding rod on one side of the bottom of the pull tube, and a movable plate hinged to one side of the top of the pull tube, with a roller at the bottom of the movable plate. This device connects the presser foot and the pull tube through the mutual cooperation of the presser foot, limiting edges, guide post, limiting blocks, pull tube, guide rod, roller, and double needle groove. When sewing webbing, the guide post and guide rod guide the webbing downwards smoothly, improving the limiting effect on the webbing, preventing webbing deviation, making the stitch line straighter, and the device can sew two threads at once.

[0004] However, the above technical solution has the following shortcomings: When the device presses the webbing with rollers, it can play a certain anti-slip role on the webbing. However, when processing and conveying webbing of different thicknesses, the position of the rollers cannot be adjusted, resulting in different pressing effects on the webbing. Excessive extrusion pressure can easily affect the wear of the webbing during feeding, while insufficient extrusion pressure will affect the anti-slip effect on the webbing. Utility Model Content

[0005] The purpose of this invention is to address the problems existing in the background technology by proposing a webbing positioning sewing device that can adjust the position of the rollers according to the thickness of the webbing, so that the rollers can provide a good anti-slip effect on the webbing while avoiding excessive wear on the webbing.

[0006] The present invention provides a webbing positioning sewing device, comprising a presser foot and an adjusting mechanism. The presser foot has a guide post, with limit blocks at both ends, and a pull cylinder on each limit block. The adjusting mechanism includes a support frame on the pull cylinder, a threaded cylinder on the support frame, a screw threaded to the threaded cylinder, two through-and slidably connected guide rods on the support frame, a connecting frame on the guide rods, a roller rotatably connected to the connecting frame, a rotating connector on the connecting frame, and a stabilizing component on the support frame. The stabilizing component includes a first magnet on the guide rods, a plug inserted into the support frame, and a handle and a second magnet on the plug. The first magnet and the second magnet are magnetically connected.

[0007] Preferably, one end of the screw is inserted into the interior of the rotating connector and rotatably connected, while the other end of the screw is provided with a handwheel.

[0008] Preferably, two convex rings are coaxially arranged on the screw, and a telescopic soft sleeve is provided on the convex ring. A connecting drum is provided on the telescopic soft sleeve, and the connecting drum is rotatably connected to the support frame.

[0009] Preferably, the end of the pull tube near the trapezoidal inlet is provided with a winding rod having multiple bends.

[0010] Preferably, the pull cylinder is provided with a trapezoidal belt inlet and an elongated through hole, and the roller extends into the interior of the elongated through hole.

[0011] Preferably, a guide roller is rotatably connected to the limiting block, and the guide roller is located between the pull cylinder and the guide column.

[0012] Preferably, the presser foot is provided with a mounting block and has a groove.

[0013] Compared with the prior art, the present invention has the following beneficial technical effects:

[0014] This invention, through its adjustable structure, can not only adjust the position of the rollers according to the thickness of the webbing, but also control the squeezing pressure between the rollers and the webbing. This ensures that the rollers provide a good anti-slip effect on the webbing while avoiding excessive wear, thus expanding the applicability of the device. At the same time, the stabilizing component, together with the screw's self-locking thread structure, ensures stability during the webbing feeding process. Furthermore, it is simple and convenient to operate, making it highly practical. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the installation of the adjustment mechanism of this utility model;

[0017] Figure 3This is a schematic diagram showing the connection between the guide rod and the stabilizing component of this utility model;

[0018] Figure 4 This is a schematic diagram showing the connection of some structures of this utility model.

[0019] Reference numerals: 1. Presser foot; 2. Guide post; 3. Pulling cylinder; 4. Support frame; 5. Threaded cylinder; 6. Screw; 7. Guide rod; 8. Connecting frame; 9. Roller; 10. Rotary connector; 11. Handwheel; 12. First magnet; 13. Insert block; 14. Handle; 15. Second magnet; 16. Convex ring; 17. Telescopic soft sleeve; 18. Connecting drum; 19. Mounting block; 20. Groove; 21. Guide roller; 22. Limiting block; 23. Trapezoidal belt inlet; 24. Long strip through hole; 25. Winding rod. Detailed Implementation

[0020] Example 1

[0021] like Figure 1 - Figure 4 As shown in the figure, the webbing positioning sewing device proposed in this embodiment includes a presser foot 1 and an adjustment mechanism; a guide post 2 is provided on the presser foot 1, and limit blocks 22 are provided at both ends of the guide post 2, and a pull tube 3 is provided on the limit block 22.

[0022] The adjustment mechanism includes a support frame 4 mounted on the pull cylinder 3, a threaded cylinder 5 mounted on the support frame 4, a screw 6 threadedly connected to the threaded cylinder 5, two guide rods 7 that pass through and are slidably connected to the support frame 4, a connecting frame 8 mounted on the guide rods 7, a roller 9 rotatably connected to the connecting frame 8, a rotating connector 10 mounted on the connecting frame 8, and a stabilizing component mounted on the support frame 4. The stabilizing component includes a first magnet 12 mounted on the guide rod 7, a plug 13 inserted into the support frame 4, and a handle 14 and a second magnet 15 mounted on the plug 13. The first magnet 12 and the second magnet 15 are magnetically connected. One end of the screw 6 is inserted into the interior of the rotating connector 10 and rotatably connected. The other end of the screw 6 is provided with a handwheel 11.

[0023] In this embodiment, before sewing the webbing, the presser foot 1 is fixed to the needle plate of the sewing machine (not shown). After the webbing is installed and arranged, the position of the roller 9 is adjusted according to the thickness of the batch to control the squeezing force between the roller 9 and the webbing. This ensures that the roller 9 provides good anti-slip properties while avoiding excessive wear on the webbing. During sewing, when the roller 9 contacts the webbing, the traction force of the sewing machine needle is greater than the rubber friction, allowing the webbing to move forward steadily. When adjusting the roller 9, the screw 6 can be rotated via the handwheel 11. The screw 6 and the screw... While the threaded cylinder 5 is screwed in, it is inserted into one end of the rotating connector 10 and rotates. Under the guidance of the guide rod 7, the screw 6 drives the connecting frame 8 to move, and the connecting frame 8 drives the roller 9 to move until it moves to the optimal position of the roller 9 corresponding to different thicknesses of webbing determined after testing and debugging. Then, the insert block 13 is inserted into the support frame 4 through the handle 14 until the first magnet 12 and the second magnet 15 are magnetically connected. With the self-locking thread structure of the screw 6 itself, it can ensure that the roller 9 will not be deviated during the webbing feeding process, ensuring the stability of feeding. It is also simple and convenient to operate and has good practicality.

[0024] Example 2

[0025] like Figure 1 , Figure 2 and Figure 4 As shown, in this embodiment, a webbing positioning sewing device is proposed. Compared with the first embodiment, in this embodiment, two protruding rings 16 are coaxially arranged on the screw 6, and a telescopic soft sleeve 17 is arranged on the protruding ring 16. A connecting rotating cylinder 18 is arranged on the telescopic soft sleeve 17, and the connecting rotating cylinder 18 is rotatably connected to the support frame 4.

[0026] In this embodiment, when the screw 6 is rotated for adjustment, it will drive the convex ring 16 to rotate and move. In turn, the convex ring 16, in conjunction with the connecting drum 18, drives the telescopic soft sleeve 17 to extend and retract while rotating, so that the telescopic soft sleeve 17 can always provide good protection for the thread structure of the screw 6 and prevent impurities raised on the webbing from affecting the normal maintenance cycle of the screw 6.

[0027] Example 3

[0028] like Figure 1 and Figure 2 As shown, in this embodiment, a webbing positioning sewing device is proposed. Compared with the first embodiment, in this embodiment, the pull cylinder 3 is provided with a winding rod 25 with multiple bends at one end near the trapezoidal tape inlet 23. The pull cylinder 3 is provided with a trapezoidal tape inlet 23 and an elongated through hole 24. The roller 9 extends into the interior of the elongated through hole 24. A guide roller 21 is rotatably connected to the limiting block 22. The guide roller 21 is located between the pull cylinder 3 and the guide post 2. The presser foot 1 is provided with a mounting block 19 and has a sewing groove 20.

[0029] In this embodiment, the presser foot 1 can be installed on the matching equipment of the sewing machine by means of the mounting block 19. When feeding the webbing, the webbing is first wrapped around the winding rod 25 in an alternating manner and then inserted into the elongated through hole 24 in the pull tube 3 through the trapezoidal tape inlet 23. The trapezoidal tape inlet 23 and the elongated through hole 24 allow the webbing to pass through smoothly and maintain directional stability, avoiding lateral deviation. After the webbing passes through the pull tube 3, it passes through the gap between the guide roller 21 and the guide post 2 and is pulled to the position of the groove 20 along the surface of the guide post 2 to realize the sewing processing of the webbing.

[0030] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A webbing positioning sewing device, characterized in that, include: A pressure foot (1) is provided with a guide post (2), and limit blocks (22) are provided at both ends of the guide post (2). A pull tube (3) is provided on the limit block (22). The adjustment mechanism includes a support frame (4) on the pull tube (3), a threaded cylinder (5) on the support frame (4), a screw (6) threaded to the threaded cylinder (5), two guide rods (7) that pass through and slide on the support frame (4), a connecting frame (8) on the guide rods (7), a roller (9) rotatably connected to the connecting frame (8), a rotating connector (10) on the connecting frame (8), and a stabilizing component on the support frame (4); the stabilizing component includes a first magnet (12) on the guide rods (7), a plug (13) inserted into the support frame (4), a handle (14) on the plug (13), and a second magnet (15); the first magnet (12) and the second magnet (15) are magnetically connected.

2. The webbing positioning sewing device according to claim 1, characterized in that, One end of the screw (6) is inserted into the inside of the rotating connector (10) and rotated, and the other end of the screw (6) is provided with a handwheel (11).

3. The webbing positioning sewing device according to claim 1, characterized in that, Two convex rings (16) are coaxially arranged on the screw (6). A telescopic soft sleeve (17) is provided on the convex ring (16). A connecting drum (18) is provided on the telescopic soft sleeve (17). The connecting drum (18) is rotatably connected to the support frame (4).

4. The webbing positioning sewing device according to claim 1, characterized in that, The pull tube (3) is provided with a winding rod (25) with multiple bends at one end near the trapezoidal inlet (23).

5. The webbing positioning sewing device according to claim 1, characterized in that, The pull tube (3) is provided with a trapezoidal belt inlet (23) and a long strip through hole (24), and the roller (9) extends into the interior of the long strip through hole (24).

6. The webbing positioning sewing device according to claim 1, characterized in that, A guide roller (21) is rotatably connected to the limiting block (22), and the guide roller (21) is located between the pull cylinder (3) and the guide column (2).

7. The webbing positioning sewing device according to claim 1, characterized in that, The presser foot (1) is provided with a mounting block (19) and has a groove (20).

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