A thread ball removal system for initiating a sewing process

Abstract

The utility model discloses a kind of thread ball removal systems in starting sewing process, including base, needle plate, needle;Still including wire clamp device, thread trimming device, negative pressure suction device, control device, wire clamp device includes driving assembly and wire clamping part, driving assembly controls wire clamping part to carry out wire clamping work;Thread trimming device includes fixed knife, moving knife and thread trimming drive, thread trimming drive drives moving knife and fixed knife cooperation to carry out thread trimming;Negative pressure suction device includes air suction pipe, negative pressure generator and dust collecting box, the air suction port of air suction pipe is aligned with thread trimming position, and the broken end is suctioned to thread trimming device.The utility model in which each device of thread ball removal system can cooperate with the sewing work of sewing machine, can accurately handle face thread in starting sewing process, effectively prevent the formation of thread ball (bird nest), improve production efficiency, simple structure makes sewing quality more optimal.

Description

Technical Field

[0001] This utility model relates to the field of sewing machine equipment technology, and in particular to a system for removing spools of thread during the start of sewing. Background Technology

[0002] During the sewing process, especially at the beginning, long, unsecured thread ends can easily form tangled clumps under the fabric, creating a "bird's nest" effect. These clumps not only affect the appearance of the sewn product but can also lead to messy stitches, increased manual trimming costs, and reduced production efficiency.

[0003] Existing technologies offer several solutions for handling thread ends during sewing, such as using thread-cutting mechanisms to trim excess threads. However, these solutions are mostly designed for routine thread trimming during the sewing process and are not very effective at preventing and removing tangled threads at the beginning of the sewing stage. Some technologies also suffer from problems such as inaccurate thread trimming timing, excessively long thread residue, and the inability to promptly remove thread ends, leading to secondary contamination, making it difficult to meet the requirements of high-quality sewing.

[0004] Therefore, there is a need for a system and method that can precisely handle the surface thread and effectively remove the tangled bird's nest thread during the initial sewing process to address the shortcomings of existing technologies. Summary of the Invention

[0005] The purpose of this invention is to solve the problems mentioned in the background art and to provide a system for removing spools of thread during the start of sewing.

[0006] To achieve the above objectives, the technical solution of this utility model is as follows: A thread removal system for the start of sewing includes a machine base, a needle plate, and a needle. The needle plate is mounted on the machine base, and the needle can move up and down through needle holes on the needle plate. It also includes a thread clamping device, a thread cutting device, a negative pressure suction device, and a control device. The thread clamping device includes a drive assembly and a thread clamping section, with the drive assembly controlling the thread clamping section to clamp the thread. The thread cutting device includes a fixed blade, a moving blade, and a thread cutting drive component, which drives the moving blade to cooperate with the fixed blade to cut the thread. The negative pressure suction device includes a suction pipe, a negative pressure generator, and a dust collection box. The suction port of the suction pipe is aligned with the thread cutting position to remove the cut thread ends. The control module is electrically connected to the needle drive mechanism, the drive assembly of the thread clamping device, the thread cutting drive component of the thread cutting device, and the negative pressure generator of the negative pressure suction device.

[0007] In the above-mentioned thread removal system during the start of sewing, the thread clamp device is installed and connected via a mounting base. The thread clamp device includes two clamps and a top plate. The ends of the two clamps are positioned close to each other. The drive assembly drives the fixed plate to move, thereby opening and closing the ends of the two clamps, and thus clamping the top thread or moving the top thread.

[0008] In the above-mentioned thread removal system during the start of sewing, the thread cutting drive is fixed on the machine base, and a drive assembly connected to the thread cutting drive is installed on the machine base. The moving blade is connected to the drive assembly. The thread cutting device also includes a blade holder, and a fixed blade is fixedly installed on the blade holder. The thread cutting drive drives the moving blade to rotate through the drive assembly and cooperates with the fixed blade to cut the thread.

[0009] In the above-mentioned thread removal system during the start of sewing, the suction port of the suction pipe is flat and close to the mating position of the fixed blade and the moving blade.

[0010] In the above-mentioned thread removal system during the start of sewing, the negative pressure generator is connected to the suction pipe, and the dust collection box is connected to the other end of the suction pipe.

[0011] In the above-mentioned thread removal system during the start of sewing, the drive component is pneumatically driven, electromagnetically driven, or motor-driven, and the thread cutting drive is driven by a motor or electromagnet.

[0012] In the above-mentioned thread removal system during the start of sewing, the thread cutting position of the moving blade and the fixed blade is 1-3mm away from the lower surface of the fabric placed on the needle plate.

[0013] In the aforementioned thread removal system during the start of sewing, the negative pressure value of the negative pressure generator is -0.02 to -0.05 MPa. In the above-mentioned thread removal system during the start of sewing, the thread cutting device 5 cuts the bottom thread while the negative pressure suction device continues to work for 0.2-0.5 seconds.

[0014] The advantages of this utility model: This utility model's thread slub removal system integrates various devices that work in conjunction with a sewing machine. It precisely handles the thread at the start of the sewing process, effectively preventing the formation of slubs (bird's nests), improving production efficiency, and offering a simple structure for superior sewing quality. It is suitable for sewing processing in clothing, home textiles, and bags, and is especially suitable for scenarios requiring high quality at the beginning of the sewing process. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a perspective view of the present utility model; Figure 2 This is a perspective view of the structure of each device in this utility model; Figure 3 , Figure 4 These are perspective views of the center clamp device of this utility model from two different directions. Detailed Implementation

[0017] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0018] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this specification are for illustrative purposes only and do not represent the only possible implementation.

[0019] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0020] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0021] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this specification belongs. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0022] Please see Figures 1 to 4 This utility model provides a thread removal system during the start of sewing, comprising a machine base 1, a needle plate 2, and a needle 3. The needle plate 2 is mounted on the machine base 1, and the needle 3 can move up and down through the needle hole on the needle plate 2. It also includes a thread clamping device 4, a thread cutting device 5, a negative pressure suction device 6, and a control device 7. The thread clamping device 4 includes a drive assembly 41 and a thread clamping part 42, and the drive assembly 41 controls the thread clamping part 42 to perform thread clamping operations. The thread cutting device 5 includes a fixed blade 51 and a moving blade. The wire-cutting drive unit 53 drives the moving blade 52 to cooperate with the fixed blade 51 to cut the wire; the negative pressure suction device 6 includes a suction pipe 61, a negative pressure generator 62, and a dust collection box 63. The suction port of the suction pipe 61 is aligned with the wire-cutting position to suck up the cut wire ends; the control module 7 is electrically connected to the needle drive mechanism, the drive assembly 41 of the wire clamp device 4, the wire-cutting drive unit 53 of the wire-cutting device 5, and the negative pressure generator 62 of the negative pressure suction device 6. In the above-mentioned thread removal system during the start of sewing, the thread clamp device 4 is installed and connected via the mounting base 43. The thread clamp device 4 includes two clamps 44 and a top plate 45. The ends of the two clamps 44 are arranged close to each other. The drive assembly 41 drives the fixed plate 45 to move to realize the opening and closing of the ends of the two clamps 44, thereby clamping the top thread or driving the top thread to move.

[0023] In the above-mentioned thread removal system during the start of sewing, the thread cutting drive 53 is fixed on the machine base 1, and the machine base 1 is equipped with a drive assembly 54 connected to the thread cutting drive 53. The moving blade 52 is connected to the drive assembly 54. The thread cutting device 5 also includes a blade holder 55, and a fixed blade 51 is fixedly disposed on the blade holder 55. The thread cutting drive 53 drives the moving blade 52 to rotate through the drive assembly 54 and cooperate with the fixed blade 51 to cut the thread.

[0024] In the above-mentioned thread removal system during the start of sewing, the air inlet of the suction pipe 61 is flat and close to the mating position of the fixed blade 51 and the moving blade 52.

[0025] In the above-mentioned thread removal system during the start of sewing, the negative pressure generator 62 is connected to the suction pipe 61, and the dust collection box 63 is connected to the other end of the suction pipe 61.

[0026] In the above-mentioned thread removal system during the start of sewing, the drive component 41 is pneumatically driven, electromagnetically driven, or motor-driven, and the thread cutting drive component 53 is driven by a motor or electromagnet.

[0027] In the above-mentioned thread removal system during the start of sewing, the thread cutting position of the moving blade 52 and the fixed blade 51 is 1-3mm away from the lower surface of the fabric placed on the needle plate 2.

[0028] In the aforementioned thread removal system during the start of sewing, the negative pressure value of the negative pressure generator 62 is -0.02 to -0.05 MPa. In the above-mentioned thread removal system during the start of sewing, the thread cutting device 5 cuts the bottom thread while the negative pressure suction device 6 continues to work for 0.2-0.5 seconds.

[0029] The specific working principle of this utility model is as follows: Initial preparation stage: The operator turns on the system power and starts the system through the touch screen. The sewing machine's electronic control system controls each device to reset. The moving blade 52 returns to the starting position away from the fixed blade 51, and the two grippers 44 of the thread clamp device 4 are in the open or initial position. The fabric to be sewn is placed on the needle plate 2, and the fabric position is adjusted so that the sewing starting point is aligned with the needle.

[0030] Needle threading through fabric: The sewing machine's electronic control system sends a command to the needle drive motor, which drives the needle 3 to pass through the needle hole on the fabric and needle plate, bringing the top thread under the fabric.

[0031] Needle return: After the needle reaches the lowest point, the electronic control system controls the motor to reverse, and the needle moves upward and returns to the top of the cotton fabric. At this time, the top thread remains below the fabric.

[0032] Thread clamp device operation: In this embodiment, the thread clamp device 4 is pneumatically driven. The sewing machine's electronic control system controls the cylinder of the drive component 41 to circulate air, and the piston rod drives the top plate 45 to move backward, thereby causing the two grippers 44 to close and clamp the top thread left under the cotton cloth, and move the top thread away from the needle hole.

[0033] Thread cutting device: The sewing control system controls the power supply of the thread cutting device 5, which drives the moving blade 52 to move towards the fixed blade 51. The moving blade and the fixed blade engage to cut the top thread. The thread cutting position is away from the lower surface of the fabric.

[0034] Negative pressure suction to remove thread ends: At the same time as the thread cutting action occurs, the sewing control system controls the negative pressure generator 62 to start and generate negative pressure. The suction port of the suction pipe 61 sucks up the thread end, the two grippers 44 open and release the clamped thread, and the suction pipe 61 sucks away the cut thread end and transports it to the dust collection box.

[0035] Continue sewing: After the thread ends are removed, the sewing control system controls the needle to move downwards again, passing through the fabric for normal sewing.

[0036] Selection of moving blade position: According to the sewing process requirements of this cotton fabric, the moving blade should remain in the current position after cutting the thread and should not retract.

[0037] Thread cutting at the end of sewing: When the preset length is reached, the sewing control system stops the sewing needle. At this time, the thread cutting device is powered on again. Since the moving blade does not retract, it works directly with the stationary blade to cut the top and bottom threads.

[0038] System Reset: After the thread cutting is completed, the sewing control system cuts off the power, the moving blade returns to the starting position under the action of the reset spring, the negative pressure generator stops working, the operator takes out the sewn cotton cloth, cleans the thread ends in the dust collection box, and the system waits for the next operation.

[0039] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0040] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the patent protection scope of this utility model should be determined by the appended claims.

Claims

1. A thread removal system for the start of sewing, comprising a machine base (1), a needle plate (2), and a needle (3), wherein the needle plate (2) is disposed on the machine base (1), and the needle (3) is movable up and down through a needle hole on the needle plate (2); characterized in that: It also includes a wire clamp device (4), a wire cutting device (5), a negative pressure suction device (6), and a control device (7). The wire clamp device (4) includes a drive assembly (41) and a wire clamping part (42). The drive assembly (41) controls the wire clamping part (42) to perform wire clamping work. The wire cutting device (5) includes a fixed blade (51), a moving blade (52), and a wire cutting drive component (53). The wire cutting drive component (53) drives the moving blade (52) to cooperate with the fixed blade (51) to cut the wire. The negative pressure suction device (6) includes a suction pipe (61), a negative pressure generator (62), and a dust collection box (63). The suction port of the suction pipe (61) is aligned with the wire cutting position to suck up the cut wire ends. The control module (7) is electrically connected to the needle drive mechanism, the drive assembly (41) of the wire clamp device (4), the wire cutting drive component (53) of the wire cutting device (5), and the negative pressure generator (62) of the negative pressure suction device (6).

2. The thread removal system during the start of sewing as described in claim 1, characterized in that: The wire clamp device (4) is installed and connected through the mounting base (43). The wire clamp device (4) includes two clamps (44) and a top plate (45). The ends of the two clamps (44) are set close to each other. The driving component (41) drives the fixed plate (45) to move to realize the opening and closing of the ends of the two clamps (44), thereby clamping the surface wire or driving the surface wire to move.

3. The thread removal system during the start of sewing as described in claim 1, characterized in that: The wire cutting drive (53) is fixed on the base (1). The base (1) is equipped with a drive assembly (54) connected to the wire cutting drive (53). The moving blade (52) is connected to the drive assembly (54). The wire cutting device (5) also includes a blade holder (55). The fixed blade (51) is fixedly mounted on the blade holder (55). The wire cutting drive (53) drives the moving blade (52) to rotate through the drive assembly (54) and cooperates with the fixed blade (51) to cut the wire.

4. The thread removal system during the start of sewing as described in claim 1, characterized in that: The air inlet of the suction pipe (61) is flat and close to the mating position of the fixed blade (51) and the moving blade (52).

5. A thread removal system during the start of sewing as described in claim 1, characterized in that: The negative pressure generator (62) is connected to the suction pipe (61), and the dust collection box (63) is connected to the other end of the suction pipe (61).

6. A thread removal system during the start of sewing as described in claim 1, characterized in that: The drive assembly (41) is driven by pneumatic, electromagnet or motor, and the wire cutting drive (53) is driven by motor or electromagnet.

7. A thread removal system during the start of sewing as described in claim 3, characterized in that: The cutting position of the moving blade (52) and the fixed blade (51) is 1-3 mm away from the lower surface of the fabric placed on the needle plate (2).

8. A thread removal system during the start of sewing as described in claim 1, characterized in that: The negative pressure value of the negative pressure generator (62) is -0.02 to -0.05 MPa.

9. A thread removal system during the start of sewing as described in claim 1, characterized in that: While the wire cutting device (5) cuts the bottom wire, the negative pressure suction device (6) continues to work for 0.2-0.5 seconds.

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