Automatic thread trimming device for denim
By adjusting the design of the components and the suction components, the grid distance of the automatic denim thread cutting device is made adjustable to adapt to different thread thicknesses, solving the problem of unadjustable grid gaps and improving cutting efficiency and product quality consistency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FOSHAN NANHAI DISTRICT XIQIAO FENGPAI TEXTILE CO LTD
- Filing Date
- 2025-05-14
- Publication Date
- 2026-06-09
Smart Images

Figure CN224337945U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of thread trimming machines, specifically relating to an automatic thread trimming device for denim fabric. Background Technology
[0002] In the denim production process, trimming loose threads is a crucial step. Traditional denim thread trimming relies primarily on manual labor, with workers using scissors or cutters to cut the denim along pre-defined marks. This method has many limitations; it is not only inefficient and unable to meet the demands of large-scale production, but also prone to uneven edges due to the subjectivity and instability of manual operation, affecting the consistency of denim product quality.
[0003] Patent CN214362273U discloses a movable blade type suction wire cutting machine, which includes a housing with a fixed plate inside. The fixed plate divides the interior of the housing into an upper cavity and a lower cavity. A guide groove is provided in the middle of the fixed plate, extending vertically from the upper end face of the fixed plate to the bottom of the housing, dividing the lower cavity into a first collection cavity and a second collection cavity. The upper and lower ends of the guide groove are respectively connected to the upper cavity and the outside of the housing. The fixed plate is equipped with a first suction motor and a second suction motor corresponding to the first and second collection cavities, respectively. The housing is equipped with a first wire cutting assembly and a second wire cutting assembly corresponding to the first and second collection cavities, respectively.
[0004] In existing technologies, the cutting of loose threads in denim fabric mainly relies on a cutting head. In actual production, a grid is usually set between the cutting blade and the thread to block and separate them, thereby improving the safety of the device. However, the gap between the grids is not adjustable. In actual use, thicker threads on denim fabric may require a larger grid distance, otherwise the thread may not be able to enter the device. On the other hand, thinner threads require a smaller grid distance, otherwise the thin thread is prone to deviating in the larger gap, which leads to the limitation of the types and styles of clothing that can be processed.
[0005] Therefore, this solution proposes an automatic denim thread-cutting device to solve the above problems. Utility Model Content
[0006] The purpose of this invention is to provide an automatic denim trimming device to solve the problem that the gap between the grids in the prior art is not adjustable, which limits the types and styles of clothing that can be processed.
[0007] To achieve the above objectives, this utility model provides the following technical solution: an automatic denim trimming device, comprising a processing box, an isolation frame, and a closed door. The isolation frame is installed inside the processing box, and an air suction component is installed between the isolation frame and the processing box. An installation frame is installed on the air suction component, and an installation bracket is installed on the installation frame. Multiple sets of cutting components are installed on the installation bracket. An adjustment component is installed on the installation frame, and multiple grid plates are evenly arranged on the adjustment component. Grid plates are installed on the left and right side walls of the installation frame near the opening, and multiple grid plates are evenly distributed on the bottom surface of the inner cavity of the installation frame, with the multiple grid plates located between two grid plates.
[0008] The adjustment assembly includes a second mounting bracket. The second mounting bracket is mounted on the top surface of the mounting frame. A worm gear is rotatably mounted on the second mounting bracket. A rotating shaft is rotatably mounted on the top surface of the mounting frame near the second mounting bracket. A worm wheel is mounted above the side wall of the rotating shaft. A gear is mounted below the side wall of the second mounting bracket.
[0009] The top surface of the mounting frame is provided with a sliding groove, a sliding block is slidably installed in the sliding groove, a rack is installed on the side wall of the sliding block, and multiple grid plates are evenly distributed on the bottom surface of the sliding block, with the grid plates in contact with the elastic cloth.
[0010] Gears and racks mesh with each other.
[0011] Preferably, a sliding plate is installed between the three bottom surfaces of the plurality of grid plates, and a moving groove is provided on the bottom surface of the inner cavity of the mounting frame, and the sliding plate slides in the inner cavity of the moving groove.
[0012] Preferably, the side cross section of the groove is in the shape of a cross, and the sliding block is in the shape of a cross.
[0013] Preferably, the grid plate one has a triangular cross-section when viewed from above, and an elastic cloth is connected between the grid plate one and the grid plate three.
[0014] Preferably, the inner cavity of the mounting frame is equipped with a beam frame, the side wall of the beam frame is connected to the inner wall of the mounting frame, and the opening of the beam frame gradually narrows along the air inlet direction.
[0015] Preferably, the suction assembly includes a suction fan, the suction fan is mounted on the top surface of the isolation frame, a second connecting pipe is installed at the air inlet of the suction fan, the second connecting pipe penetrates the top plate of the processing box and extends above the processing box, a first connecting pipe is installed at the air outlet of the suction fan, the first connecting pipe penetrates the isolation frame and extends below the isolation frame, a third connecting pipe is connected to the side of the second connecting pipe away from the suction fan, a mounting frame is connected to the side of the third connecting pipe away from the second connecting pipe, and a collection box is slidably installed between the isolation frame and the processing box.
[0016] Compared with the prior art, the beneficial effects of this utility model are:
[0017] 1. This utility model, through the inclusion of an adjustment component, grid plate three, grid plate two, and grid plate one in an automatic denim thread-cutting device, allows for the adjustment of the gaps between grid plate three and grid plates two and one during device use, through the cooperation of the above structures. This enables the grid spacing to be appropriately increased for thicker fabrics, allowing the thread-cutting machine to cut the threads more smoothly, and to be decreased for finer thread ends, achieving a more precise thread-cutting operation. This ensures that the thread ends are trimmed more neatly without damaging the fabric, thereby improving the applicability of the device.
[0018] 2. This utility model, by setting up grid plate two, grid plate one, elastic fabric and grid plate three in an automatic denim thread cutting device, achieves the shape of the device's inlet cross-sectional area changing from large to small and the thread inlet changing from large to small when the device is in use. This allows the sewing thread to gradually shrink along the contour of the thread inlet when entering the thread cutting machine, and enter the equipment in an orderly manner, thus avoiding the sudden angle change or accumulation of the thread at the thread inlet. Attached Figure Description
[0019] Figure 1 This is the front view of the present utility model;
[0020] Figure 2 This is one of the cross-sectional views of this utility model;
[0021] Figure 3 This is the second sectional view of the present invention;
[0022] Figure 4 This is a schematic diagram of the installation structure of the adjustment component of this utility model;
[0023] Figure 5 This is an exploded view of the adjustment component of this utility model.
[0024] In the diagram: 1. Processing box; 2. Closed door; 3. Isolation frame; 4. Control panel; 5. Suction assembly; 501. Suction fan; 502. Connecting pipe one; 503. Connecting pipe two; 504. Connecting pipe three; 7. Mounting frame; 8. Collection box; 9. Adjustment assembly; 901. Mounting frame two; 902. Worm gear; 903. Rocker arm; 904. Rotating shaft; 905. Worm wheel; 906. Rack; 907. Sliding block; 908. Gear; 10. Slide groove; 11. Grid plate one; 12. Grid plate two; 13. Mounting frame one; 14. Cutting piece; 15. Moving groove; 16. Grid plate three; 17. Elastic cloth; 18. Sliding plate; 19. Beam frame. Detailed Implementation
[0025] The following will be combined with the appendix Figure 1 To be continued Figure 5 The technical solutions in the embodiments of this utility model are clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.
[0026] It should be noted that, in the embodiments of this utility model, the directions shown in the accompanying drawings shall prevail, such as front and back. Figure 1 For the sake of accuracy, the specific details should be as follows: Figure 1 The left side is the front. Figure 1 The right side is the rear; at the same time, as Figure 2 As shown, the horizontal direction is roughly defined as left and right, and the vertical direction is defined as up and down. If a specific orientation changes, the directional indication will also change accordingly.
[0027] Reference Figure 1 - Figure 5 As shown, this utility model provides an automatic denim trimming device, including a processing box 1, an isolation frame 3, and a closing door 2. The isolation frame 3 is installed in the inner cavity of the processing box 1. An air suction component 5 is installed between the isolation frame 3 and the processing box 1. An installation frame 7 is installed on the air suction component 5. An installation frame 13 is installed on the installation frame 7. Multiple sets of cutting parts 14 are installed on the installation frame 13. An adjustment component 9 is installed on the installation frame 7. Multiple grid plates 16 are evenly arranged on the adjustment component 9. Grid plates 12 are installed on the left and right side walls of the installation frame 7 near the opening. Multiple grid plates 11 are evenly distributed on the bottom surface of the inner cavity of the installation frame 7. The multiple grid plates 11 are located between two grid plates 12.
[0028] The cutting component 14 includes a motor and a cutting saw. Multiple cutting components 14 are mounted on the mounting bracket 13, and the power output end of the cutting component 14 is connected to the cutting saw.
[0029] The adjustment assembly 9 includes a second mounting bracket 901. The second mounting bracket 901 is mounted on the top surface of the mounting frame 7. A worm gear 902 is rotatably mounted on the second mounting bracket 901. A rotating shaft 904 is rotatably mounted on the top surface of the mounting frame 7 near the second mounting bracket 901. A worm wheel 905 is mounted on the upper side wall of the rotating shaft 904. A gear 908 is mounted on the lower side wall of the second mounting bracket 901.
[0030] The top surface of the mounting frame 7 is provided with a sliding groove 10, a sliding block 907 is slidably installed in the sliding groove 10, a rack 906 is installed on the side wall of the sliding block 907, and multiple grid plates 16 are evenly distributed on the bottom surface of the sliding block 907, and the grid plates 16 are in contact with the elastic cloth 17.
[0031] Gear 908 meshes with rack 906;
[0032] One end of the worm gear 902 is equipped with a rocker arm 903, which is used to improve the ease of operation for the operator.
[0033] Furthermore, a control panel is installed on the outer wall of the processing box 1. The processing box 1 is connected to the electrical equipment in the device via wires and controls the operation of the electrical equipment.
[0034] In a further embodiment, refer to Figure 1 - Figure 4 A sliding plate 18 is installed between the bottom surfaces of multiple grid plates 16. A moving groove 15 is provided on the bottom surface of the inner cavity of the mounting frame 7, and the sliding plate 18 slides in the inner cavity of the moving groove 15.
[0035] Among them, the sliding plate 18 in the moving groove 15 further improves the integrity between the multiple grid plates 16 and enhances the stability of the device.
[0036] In a further embodiment, refer to Figure 1 - Figure 5 The side cross section of the chute 10 is shaped like a cross, and the sliding block 907 is also shaped like a cross.
[0037] The shape design of the groove 10 and the sliding block 907 makes the movement of the sliding block 907 more stable.
[0038] In a further embodiment, refer to Figures 1-5 The grid plate 11 has a triangular cross-section when viewed from above. When the device is in use, the shape design of the grid plate 11 makes the inlet cross-sectional area decrease from large to small, and the inlet opening decreases from large to small. This allows the sewing thread to gradually shrink along the contour of the inlet opening when it enters the thread cutter, and enter the equipment in an orderly manner. This avoids the thread from suddenly changing angle or piling up at the inlet opening. An elastic cloth 17 connects the grid plate 11 and the grid plate 3 16.
[0039] When the grid plate 16 moves, the elastic cloth 17 is located between the grid plate 11 and the grid plate 16. Under the pull of the grid plate 16, the elastic cloth 17 will be taut and tilted to become an inclined surface, which improves the guiding effect on the wire ends.
[0040] In a further embodiment, refer to Figure 1 - Figure 4 A beam frame 19 is installed in the inner cavity of the mounting frame 7. The side wall of the beam frame 19 is connected to the inner wall of the mounting frame 7. The opening of the beam frame 19 gradually narrows in the direction of air inlet.
[0041] The shape design of the beam frame 19 facilitates the guidance of the cut wire ends and their absorption by the suction component 5.
[0042] In a further embodiment, refer to Figure 1 - Figure 3 The suction assembly 5 includes a suction fan 501. The suction fan 501 is installed on the top surface of the isolation frame 3. A second connecting pipe 503 is installed at the air inlet of the suction fan 501. The second connecting pipe 503 passes through the top plate of the processing box 1 and extends to the top of the processing box 1. A first connecting pipe 502 is installed at the air outlet of the suction fan 501. The first connecting pipe 502 passes through the isolation frame 3 and extends to the bottom of the isolation frame 3. A third connecting pipe 504 is connected to the side of the second connecting pipe 503 away from the suction fan 501. A mounting frame 7 is connected to the side of the third connecting pipe 504 away from the second connecting pipe 503. A collection box 8 is slidably installed between the isolation frame 3 and the processing box 1.
[0043] During the use of the device, the suction fan 501 is started. As the suction fan 501 moves, the mounting frame 7, the third connecting pipe 504 and the second connecting pipe 503 will generate suction, which makes it easier for the wire end to enter the mounting frame 7 and be cut by the cutting part 14.
[0044] The working principle of this utility model is as follows: First, power is supplied to the electrical equipment in the device. Then, the wire thickness is cut as needed, and the gap between grid plate 16 and grid plate 11 is adjusted. The adjustment steps are as follows:
[0045] First, by shaking the lever 903, the worm gear 902 is activated. The worm gear 902 then drives the worm wheel 905 to rotate. The worm wheel 905 drives the rotating shaft 904 and the gear 908 to rotate synchronously. Then, the gear 908 drives the rack 906 that meshes with it to move, thereby adjusting the position of the sliding block 907 and the multiple grid plates 16 on the bottom surface of the sliding block 907. This changes the gap between the grid plates 16 and the grid plates 11, thus accommodating wire ends of different thicknesses.
[0046] Based on the disclosure and teachings of the above specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments disclosed and described above, and some modifications and changes to this utility model should also fall within the protection scope of the claims of this utility model. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on this utility model.
Claims
1. An automatic denim trimming device, comprising a processing box (1), an isolation frame (3), and a closing door (2), characterized in that, An isolation frame (3) is installed in the inner cavity of the processing box (1). An air suction component (5) is installed between the isolation frame (3) and the processing box (1). An installation frame (7) is installed on the air suction component (5). An installation frame (13) is installed on the installation frame (7). Multiple sets of cutting parts (14) are installed on the installation frame (13). An adjustment component (9) is installed on the installation frame (7). Multiple grid plates (16) are evenly arranged on the adjustment component (9). Grid plates (12) are installed on the left and right side walls of the installation frame (7) near the opening. Multiple grid plates (11) are evenly distributed on the bottom surface of the inner cavity of the installation frame (7). Multiple grid plates (11) are located between two grid plates (12). The adjustment component (9) includes a second mounting bracket (901). The second mounting bracket (901) is mounted on the top surface of the mounting frame (7). A worm gear (902) is rotatably mounted on the second mounting bracket (901). A rotating shaft (904) is rotatably mounted on the side of the top surface of the mounting frame (7) near the second mounting bracket (901). A worm wheel (905) is mounted above the side wall of the rotating shaft (904). A gear (908) is mounted below the side wall of the second mounting bracket (901). The top surface of the mounting frame (7) is provided with a sliding groove (10), a sliding block (907) is slidably installed in the sliding groove (10), a rack (906) is installed on the side wall of the sliding block (907), and a plurality of grid plates (16) are evenly distributed on the bottom surface of the sliding block (907), and the grid plates (16) are in contact with the elastic cloth (17). The gear (908) meshes with the rack (906).
2. The automatic denim thread trimming device according to claim 1, characterized in that: A sliding plate (18) is installed between the bottom surfaces of the multiple grid plates (16). The bottom surface of the inner cavity of the mounting frame (7) is provided with a moving groove (15), and the sliding plate (18) slides in the inner cavity of the moving groove (15).
3. The automatic denim thread trimming device according to claim 1, characterized in that: The side cross section of the groove (10) is in the shape of a cross, and the sliding block (907) is in the shape of a cross.
4. The automatic denim thread trimming device according to claim 1, characterized in that: The grid plate one (11) has a triangular cross-section when viewed from above, and an elastic cloth (17) is connected between the grid plate one (11) and the grid plate three (16).
5. The automatic denim thread trimming device according to claim 1, characterized in that: The inner cavity of the mounting frame (7) is equipped with a beam frame (19), the side wall of the beam frame (19) is connected to the inner wall of the mounting frame (7), and the opening of the beam frame (19) gradually narrows along the air inlet direction.
6. The automatic denim thread trimming device according to claim 1, characterized in that: The suction assembly (5) includes a suction fan (501). The suction fan (501) is installed on the top surface of the isolation frame (3). A second connecting pipe (503) is installed at the air inlet of the suction fan (501). The second connecting pipe (503) passes through the top plate of the processing box (1) and extends to the top of the processing box (1). A first connecting pipe (502) is installed at the air outlet of the suction fan (501). The first connecting pipe (502) passes through the isolation frame (3) and extends to the bottom of the isolation frame (3). A third connecting pipe (504) is connected to the side of the second connecting pipe (503) away from the suction fan (501). A mounting frame (7) is connected to the side of the third connecting pipe (504) away from the second connecting pipe (503). A collection box (8) is slidably installed between the isolation frame (3) and the processing box (1).