Yarn trapper structure of multi-needle machine

Abstract

The utility model provides a yarn trapper structure of a multi-needle machine, and belongs to the technical field of multi-needle machines. The yarn trapper solves the problem that an existing yarn trapper is poor in yarn feeding stability. The thread trapper structure of the multi-needle machine comprises a fixing frame, a plurality of sets of guide frames are fixedly connected to the fixing frame, a plurality of adjusting buttons capable of pressing a sewing thread are arranged on the guide frames and distributed in the vertical direction, the fixing frame is further connected with a tensioning adjusting plate located on one side of the guide frames, and the tensioning adjusting plate is arranged on the other side of the guide frames. The tensioning adjusting plate is connected with a plurality of thread passing plates for sewing threads to penetrate through, and each thread passing plate can independently and vertically slide along the tensioning adjusting plate and is positioned on the tensioning adjusting plate. According to the thread trapper structure of the multi-needle machine, fine adjustment of the tension degree of each sewing thread is achieved, the tension degree of each sewing thread can be guaranteed to be good, and the stability of the thread trapper structure is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of multi-needle machines and relates to a thread clamp structure of a multi-needle machine. Background Art

[0002] As people's requirements for sewing gradually increase, multi-needle sewing machines are often used in general industrial sewing to improve sewing efficiency. Multi-needle sewing machines usually use 3-needle, 4-needle, 6-needle, 9-needle, 12-needle, 16-needle, 21-needle, 24-needle, 25-needle, 33-needle, 38-needle, and 50-needle sewing machines. Multi-needle machines with auxiliary devices can achieve functions such as pleating, tucking, and elastic wrinkling. Therefore, several rolls of sutures are involved, and each roll of suture is guided to the sewing needle of the sewing machine. In order to make each suture smoother during sewing, an array of tension adjustment periods is usually installed on the thread rack at the far end of the sewing machine. Each suture tension adjuster corresponds to a suture clamp to adjust the tension or relaxation of the sutures passing through each suture needle.

[0003] For example, Chinese patent application [Authorization Announcement No.: CN2848899Y] discloses an improved thread tension adjustment device for a multi-needle sewing machine, comprising a fixed frame fixedly mounted on a casing of the sewing machine, a plurality of guide frames fixed on the fixed frame, a plurality of thread introduction holes penetrated on the side walls of each guide frame, a plurality of thread loosening slide plates respectively slidably mounted in the guide frames, a plurality of wedge portions are arranged on each thread loosening slide plate, and a plurality of adjustment buttons are installed in each guide frame, comprising a first and a second chuck for clamping the thread, a linkage rod for linking the wedge portions of each thread loosening slide plate, slidingly inserted between the first and the second chucks of the corresponding adjustment button, so as to stretch and release the thread clamped by each adjustment button, and the tension adjustment device is installed and fixed on the sewing machine at an inclined angle, and each guide frame is not perpendicular to the ground, so that the central axis of the thread introduction holes on both sides of each guide frame forms an angle with the ground.

[0004] Although the above structure adjusts the tension of the suture through an adjustment button and a guide frame, in actual use, it is often necessary to make individual adjustments according to the suture corresponding to each suture needle. The above structure usually adjusts the suture angle by adjusting the entire guide frame, resulting in some sutures being too tight and some being too loose, thereby reducing the stability of the thread feeding. Utility Model Content

[0005] The purpose of the utility model is to solve the above problems in the existing technology and propose a thread clamp structure for a multi-needle machine. The technical problem to be solved by the utility model is: how to solve the problem of poor thread feeding stability of the existing thread clamp.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] A thread clamp structure for a multi-needle machine comprises a fixed frame, to which a plurality of guide frames are fixedly connected, and the guide frames are provided with a plurality of adjustment buttons which can compress the sutures, and all the adjustment buttons are distributed vertically. The invention is characterized in that the fixed frame is also connected with a tensioning adjustment plate which is located on one side of the guide frame, and the tensioning adjustment plate is connected with a plurality of thread passing plates which can allow the sutures to pass through, and each thread passing plate can independently slide vertically along the tensioning adjustment plate and be positioned on the tensioning adjustment plate.

[0008] Working principle: The sutures on the thread reel are tightened in sequence through the adjustment buttons on the guide frame, and then a tensioning adjustment plate is connected to the fixed frame. The tensioning adjustment plate is located on one side of the guide frame. Multiple thread passing plates are connected to the tensioning adjustment plate, and all the adjustment buttons are distributed vertically. Therefore, each thread passing plate can independently slide vertically along the tensioning adjustment plate and be positioned on the tensioning adjustment plate. The sutures are first tensioned to a large extent through the adjustment buttons, and then the position of the thread passing plate is adjusted to achieve a slight adjustment of the tension of each corresponding suture. Since the inclination angle of each suture is different, the tension of each suture can be slightly adjusted through a slight adjustment of the thread passing plate, so that the tension of each suture can be guaranteed to be better, thereby improving the stability of the clamp structure.

[0009] In the thread clamp structure of the above-mentioned multi-needle machine, all thread passing plates can be staggered, and the thread passing plates include a fitting portion fitted on the tensioning adjustment plate, and one side of the fitting portion is bent to form a limiting portion for the thread to pass through.

[0010] By sliding the fitting part and the tensioning adjustment plate together, the connection between the thread passing plate and the tensioning adjustment plate is made more stable, and the limiting part is formed by bending one side of the fitting part, so that the suture can be tensioned through the limiting part to avoid contact between the suture and the tensioning adjustment plate, thereby making the tensioning effect of the suture better and improving the stability of the thread clamp structure.

[0011] In the above-mentioned thread clamp structure of the multi-needle machine, the fitting part is provided with strip holes, and the tensioning adjustment plate is provided with fixing holes corresponding to the strip holes one by one. The fitting part slides along the tensioning adjustment plate and is fixed on the tensioning adjustment plate by fasteners passing through the strip holes and the fixing holes corresponding to the strip holes in sequence.

[0012] The provision of the strip holes makes the adjustment of the thread passing plate more convenient and reduces the processing of the tension adjustment plate. In actual use, for sutures requiring different tension levels, the position of the tension adjustment plate can be adjusted, so that the thread clamp structure has a better tension adjustment effect on the sutures.

[0013] In the thread clamp structure of the multi-needle machine, the limiting portion is provided with at least one thread hole for threading the suture, the thread hole is in an elongated strip shape, and the length direction of the thread hole is arranged along a direction perpendicular to the tensioning adjustment plate.

[0014] The setting of the thread passing hole allows the position of the suture in the thread passing hole to slide according to the size of the tensioning force, which is convenient for the suture to adjust its tensioning force by itself during the sewing process. Multiple thread passing holes can be set on the limiting part, so that one thread passing plate can be used for tensioning multiple sutures, thereby improving the tensioning efficiency of adjacent sutures.

[0015] In the above-mentioned thread clamp structure of the multi-needle machine, there is one or two limiting parts, and the limiting parts are located on the side of the fitting part.

[0016] The provision of multiple limit parts on the thread passing plate further improves the ability of the thread passing plate to tension multiple sutures at the same time. Sutures with similar positions have the same requirements for tensioning effects. Therefore, multiple sutures with similar positions can be passed through different limit parts of the same thread passing plate. When adjusting them, they can be adjusted synchronously by adjusting the position of the thread passing plate, making the adjustment of the clamp structure more convenient.

[0017] In the above-mentioned thread clamp structure of the multi-needle machine, the thread clamp structure includes a stretching plate arranged in a one-to-one correspondence with the guide frame, and the multi-needle machine includes a connecting rod mechanism connected to the stretching plate and capable of driving the stretching plate to slide. The stretching plate is provided with a clearance hole for the adjustment button to pass through and a stretching block that can be inserted into the adjustment button. The tensioning adjustment plate is fixedly connected to the stretching plate, and the connecting rod mechanism can drive the fixing frame to slide until the stretching block is inserted into the adjustment button to release the stitches in the adjustment button, and the tensioning adjustment plate moves synchronously so that the thread passing plate pulls the stitches out of the adjustment button.

[0018] It is connected to the expansion plate through the connecting rod mechanism on the multi-needle machine, and drives the expansion plate to slide. When the suture needs to be moved out of the adjusting button, the expansion plate moves downward driven by the connecting rod mechanism and the expansion block is inserted into the adjusting button. At this time, the tensioning adjustment plate moves synchronously with the expansion plate. When the tensioning adjustment plate moves downward, the thread passing plate is connected to the tensioning adjustment plate and drives the suture passed through the thread passing plate to move downward synchronously, so that the suture can be quickly moved out of the adjusting button, thereby improving the thread loosening efficiency of the thread clamp structure.

[0019] In the above-mentioned thread clamp structure of the multi-needle machine, the tensioning adjustment plate is a long strip plate, and the side walls at the upper and lower ends of the tensioning adjustment plate protrude outward to form a connecting portion fixedly connected to one of the support plates, and the outer side wall of the connecting portion abuts against the side wall of the fixing frame.

[0020] Through the setting of the connecting part, one of the support plates can stably drive the tensioning adjustment plate to move through the connection at the upper and lower ends, and the outer wall of the connecting part abuts against the side wall of the fixed frame, thereby guiding the movement of the tensioning adjustment plate and improving the stability of the wire feeding.

[0021] In the above-mentioned thread clamp structure of the multi-needle machine, the tension adjustment plate and the guide frame are both arranged obliquely, and the inclination directions of the tension adjustment plate and the guide frame are the same.

[0022] The setting of this structure enables the tensioning adjustment plate to tilt synchronously with the tilting direction of the guide frame and tension the suture, so that the suture has only one bend for tensioning, and the bending angle is small, thereby avoiding large friction when the suture is tensioned, and improving the tensioning effect of the suture of the clamp structure.

[0023] In the above-mentioned thread clamp structure of the multi-needle machine, two support plates are provided, and installation openings are opened in the middle of the adjacent two sides of the two support plates. The connecting rod mechanism includes a rotating block that can be embedded in the two installation openings, and the connecting rod mechanism drives the support plates to move up and down through the rotating block.

[0024] By setting the rotating block, the connecting rod mechanism can synchronously drive all the spreading plates to move up and down through the rotating block. The setting of the rotating block also makes the connection between the connecting rod mechanism and the spreading plates more convenient.

[0025] Compared with the prior art, the thread clamp structure of the multi-needle machine has the following advantages:

[0026] 1. The suture is first tensioned greatly through the adjustment button, and then the position of the thread plate is adjusted to achieve a slight adjustment of the tension of each corresponding suture. And because the inclination angle of each suture is different, the slight adjustment of the thread plate can achieve a slight adjustment of the tension of each suture, so that the tension of each suture can be guaranteed to be better, and the stability of the clamp structure is improved.

[0027] 2. It is connected to the expansion plate through the connecting rod mechanism on the multi-needle machine, and drives the expansion plate to slide. When the suture needs to be moved out of the adjusting button, the expansion plate moves downward driven by the connecting rod mechanism and the expansion block is inserted into the adjusting button. At this time, the tensioning adjustment plate moves synchronously with the expansion plate. When the tensioning adjustment plate moves downward, the thread passing plate is connected to the tensioning adjustment plate and drives the suture passed through the thread passing plate to move downward synchronously, so that the suture can be quickly moved out of the adjusting button, thereby improving the thread loosening efficiency of the thread clamp structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the structure of the utility model after assembly.

[0029] Figure 2 yes Figure 1 A partial enlarged view of point A in the middle.

[0030] Figure 3 It is one of the partial structural schematic diagrams of the utility model.

[0031] Figure 4 yes Figure 3 A partial enlarged view of point B in the middle.

[0032] Figure 5 This is the second partial structural schematic diagram of the utility model.

[0033] Figure 6 This is the third partial structural schematic diagram of the utility model.

[0034] Figure 7 This is the fourth partial structural schematic diagram of the utility model.

[0035] In the figure, 1, fixing frame; 2, guide frame; 21, adjustment button; 3, tensioning adjustment plate; 31, fixing hole; 32, connecting part; 4, wire-passing plate; 41, fitting part; 41a, strip hole; 42, limiting part; 42a, wire-passing hole; 5, opening plate; 51, clearance hole; 52, opening block; 53, installation port; 6, connecting rod mechanism; 61, rotating block. DETAILED DESCRIPTION

[0036] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0037] like Figure 1 As shown, the thread clamp structure of the multi-needle machine includes a fixed frame 1, on which multiple groups of guide frames 2 are fixedly connected. The guide frames 2 are provided with multiple adjustment buttons 21 that can compress the sutures, and all the adjustment buttons 21 are distributed vertically.

[0038] Specifically, Figure 1-7 As shown, the fixing frame 1 is also connected to a tensioning adjustment plate 3 located on one side of the guide frame 2, and a plurality of thread-passing plates 4 for the sutures to pass through are connected to the tensioning adjustment plate 3, and all the thread-passing plates 4 can be staggered. The thread-passing plates 4 include a fitting portion 41 fitted on the tensioning adjustment plate 3, and one side of the fitting portion 41 is bent to form a limiting portion 42 for the sutures to pass through, and the fitting portions 41 are all provided with strip holes 41a, and the tensioning adjustment plate 3 is provided with fixing holes 31 corresponding to the strip holes 41a one by one, and each fitting portion 41 can slide independently along the tensioning adjustment plate 3 and be fixed to the tensioning adjustment plate 3 by passing through the strip holes 41a and the fixing holes 31 corresponding to the strip holes 41a in sequence through fasteners.

[0039] Working principle: The sutures on the thread reel are compressed in sequence through the adjustment buttons 21 on the guide frame 2, and then a tensioning adjustment plate 3 is connected to the fixed frame 1, and the tensioning adjustment plate 3 is located on one side of the guide frame 2. A plurality of thread passing plates 4 are connected to the tensioning adjustment plate 3, and all the adjustment buttons 21 are distributed vertically. Therefore, each thread passing plate 4 can independently slide vertically along the tensioning adjustment plate 3 and be positioned on the tensioning adjustment plate 3. The sutures are first tensioned to a great extent through the adjustment buttons 21, and then the position of the thread passing plate 4 is adjusted to achieve a slight adjustment of the tension of each corresponding suture. Moreover, since the inclination angle of each suture is different, a slight adjustment of the thread passing plate 4 can achieve a slight adjustment of the tension of each suture, so that the tension of each suture can be guaranteed to be better, thereby improving the stability of the clamp structure.

[0040] like Figure 1-4 As shown, the limiting portion 42 is provided with at least one thread hole 42a for passing the suture, the thread hole 42a is in a long strip shape, and the length direction of the thread hole 42a is arranged along a direction perpendicular to the tensioning adjustment plate 3. The limiting portion 42 is provided with one or two, and the limiting portion 42 is located on the side of the fitting portion 41.

[0041] like Figure 4-7 As shown, the thread clamp structure includes a stretching plate 5 that is arranged in a one-to-one correspondence with the guide frame 2, and the multi-needle machine includes a connecting rod mechanism 6 connected to the stretching plate 5 and capable of driving the stretching plate 5 to slide. The stretching plate 5 is provided with a clearance hole 51 for the adjustment button 21 to pass through and a stretching block 52 that can be inserted into the adjustment button 21. The tensioning adjustment plate 3 is fixedly connected to the stretching plate 5, and the connecting rod mechanism 6 can drive the fixing frame 1 to slide to the stretching block 52 to insert into the adjustment button 21 to release the stitches in the adjustment button 21, and the tensioning adjustment plate 3 moves synchronously to make the thread passing plate 4 pull the stitches out of the adjustment button 21. The tensioning adjustment plate 3 is a long strip plate, and the side walls of the upper and lower ends of the tensioning adjustment plate 3 protrude outward to form a connecting portion 32 that is fixedly connected to one of the stretching plates 5, and the outer side wall of the connecting portion 32 abuts against the side wall of the fixing frame 1. The tensioning adjustment plate 3 and the guide frame 2 are both inclined, and the inclination directions of the tensioning adjustment plate 3 and the guide frame 2 are the same.

[0042] like Figure 5 and Figure 6 As shown, two support plates 5 are provided, and installation openings 53 are provided in the middle of the two adjacent sides of the two support plates 5. The connecting rod mechanism 6 includes a rotating block 61 that can be embedded in the two installation openings 53. The connecting rod mechanism 6 drives the support plates 5 to move up and down through the rotating block 61.

[0043] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A thread clamp structure for a multi-needle machine, comprising a fixed frame (1), wherein the fixed frame (1) is fixedly connected with a plurality of guide frames (2), wherein the guide frames (2) are provided with a plurality of adjustment buttons (21) capable of compressing the sutures, wherein all the adjustment buttons (21) are distributed vertically, and wherein: The fixing frame (1) is also connected to a tensioning adjustment plate (3) located on one side of the guide frame (2); the tensioning adjustment plate (3) is connected to a plurality of thread passing plates (4) through which sutures can pass; each thread passing plate (4) can independently slide vertically along the tensioning adjustment plate (3) and be positioned on the tensioning adjustment plate (3).

2. The thread clamp structure of the multi-needle machine according to claim 1, characterized in that: All the thread passing plates (4) can be arranged in a staggered manner, and the thread passing plates (4) include a fitting portion (41) fitted on the tensioning adjustment plate (3), and one side of the fitting portion (41) is bent to form a limiting portion (42) for the thread to pass through.

3. The thread clamp structure of the multi-needle machine according to claim 2, characterized in that: The fitting portion (41) is provided with strip holes (41a), and the tension adjustment plate (3) is provided with fixing holes (31) corresponding to the strip holes (41a). The fitting portion (41) slides along the tension adjustment plate (3) and is fixed to the tension adjustment plate (3) by fasteners that pass through the strip holes (41a) and the fixing holes (31) corresponding to the strip holes (41a) in sequence.

4. The thread clamp structure of a multi-needle machine according to claim 2 or 3, characterized in that: The limiting portion (42) is provided with at least one thread hole (42a) for threading a suture, the thread hole (42a) being in the shape of an elongated strip, and the length direction of the thread hole (42a) being arranged in a direction perpendicular to the tensioning adjustment plate (3).

5. The thread clamp structure of a multi-needle machine according to claim 2 or 3, characterized in that: The limiting portion (42) is provided with one or two, and the limiting portion (42) is located on the side of the fitting portion (41).

6. The thread clamp structure of a multi-needle machine according to claim 1, 2 or 3, characterized in that: The thread clamp structure comprises a spreading plate (5) arranged in one-to-one correspondence with the guide frame (2), and the multi-needle machine comprises a connecting rod mechanism (6) connected to the spreading plate (5) and capable of driving the spreading plate (5) to slide, the spreading plate (5) is provided with a clearance hole (51) for the adjustment button (21) to pass through and a spreading block (52) capable of being inserted into the adjustment button (21), the tensioning adjustment plate (3) is fixedly connected to the spreading plate (5), the connecting rod mechanism (6) can drive the fixing frame (1) to slide until the spreading block (52) is inserted into the adjustment button (21) to release the stitching thread in the adjustment button (21), and the tensioning adjustment plate (3) moves synchronously so that the thread passing plate (4) pulls the stitching thread out of the adjustment button (21).

7. The thread clamp structure of a multi-needle machine according to claim 6, characterized in that: The tensioning adjustment plate (3) is a long strip-shaped plate, and the side walls at the upper and lower ends of the tensioning adjustment plate (3) protrude outward to form a connecting portion (32) fixedly connected to one of the support plates (5), and the outer side wall of the connecting portion (32) abuts against the side wall of the fixing frame (1).

8. The thread clamp structure of a multi-needle machine according to claim 1, 2 or 3, characterized in that: The tensioning adjustment plate (3) and the guide frame (2) are both arranged to be inclined, and the inclination directions of the tensioning adjustment plate (3) and the guide frame (2) are the same.

9. The thread clamp structure of a multi-needle machine according to claim 6, characterized in that: Two support plates (5) are provided, and installation openings (53) are provided in the middle of adjacent sides of the two support plates (5). The connecting rod mechanism (6) comprises a rotating block (61) that can be embedded in the two installation openings (53). The connecting rod mechanism (6) drives the support plates (5) to move up and down through the rotating block (61).

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