A sewing machine and sewing method for producing reflective vests

Abstract

This invention belongs to the field of sewing equipment technology, and provides a sewing machine and sewing method for producing reflective vests. The sewing machine includes a base plate, on which a frame-shaped movable frame is slidably mounted. Two sets of spaced sliders are slidably mounted on the movable frame. The invention aims to solve the technical problem in existing technologies where multiple adjustments to the fabric position are required, leading to fabric distortion and uneven fabric stacking, thus reducing sewing quality. Compared to existing technologies, the advantages of this invention are as follows: it avoids multiple adjustments and re-fixing of the fastening straps and Velcro, allowing the Velcro and fastening straps to be fixed and stacked before sewing, thus reducing the time spent on multiple adjustments. The Velcro and fastening straps always move synchronously, ensuring neat overlap during sewing.

Description

Technical Field

[0001] This invention belongs to the field of sewing equipment technology, and in particular relates to a sewing machine and sewing method for producing reflective vests. Background Technology

[0002] The reflective portion of the reflective vest utilizes the principle of retroreflection through the micro-rhomboid lattice refraction and high-refractive-index glass microspheres, manufactured using advanced post-focusing processing. It can reflect direct sunlight from a distance back to the light source, exhibiting excellent retroreflective optical performance in both day and night.

[0003] Reflective vests are mostly secured with Velcro when worn. The vests have straps on both sides of the waist, with Velcro sewn onto the sides of these straps for easy attachment. The applicant found some existing technologies, such as Chinese patent CN211112559U, which involves placing the fabric to be sewn on a support plate and then pressing it down with pressure plates on both sides. During sewing, the support plate moves the fabric along the needle groove. However, in this method, the fabric cannot be directly contacted with the sewing machine table. Because of the surface contact, a guide groove needs to be left for the sewing needle to pass through. The position of the guide groove restricts the direction of fabric movement, so that the fabric can only move along the length of the guide groove. Therefore, when sewing in multiple positions, the fabric needs to be clamped and adjusted multiple times. However, since the fabric is a flexible material, the pulling and other factors during each adjustment will cause the fabric to deform. As a result, the stacking relationship between the fabrics will be different after each adjustment, resulting in uneven stacking of the fabric. This leads to the twisting and deformation of the fabric after the final sewing, which reduces the sewing quality and aesthetics of the fabric. Summary of the Invention

[0004] The purpose of this invention is to provide a sewing machine and sewing method for producing reflective vests, aiming to solve the technical problem that the existing technology requires multiple adjustments to the position of the fabric, which leads to fabric distortion and deformation, resulting in uneven fabric stacking and reduced sewing quality.

[0005] The present invention is implemented as follows: a sewing machine for producing reflective vests includes a base plate, on which a frame-shaped movable frame is slidably mounted. Two sets of spaced sliders are slidably mounted on the movable frame. The sides of both sets of sliders are provided with a fixed clamping plate and a movable clamping plate for clamping the reflective vest fixing strap. The sides of both sets of sliders are provided with a pressure plate for pressing the Velcro onto the reflective vest fixing strap. A sewing machine body for sewing the Velcro and fixing strap is fixedly mounted on the base plate.

[0006] A further technical solution: A guide frame is fixedly installed on one side surface of the base plate, and a horizontal plate is slidably installed on the horizontal section of the guide frame. The horizontal plate is perpendicular to the horizontal section of the guide frame and is slidably connected to the movable frame.

[0007] A further technical solution: The fixing clamp is fixedly installed on the side of the slider, and the end of the clamp away from the slider is provided with an inclined surface structure that slopes towards the base plate.

[0008] A further technical solution: A T-shaped top plate is fixedly installed on the side of the slider. Multiple sets of spaced elastic elements are fixedly installed on the surface of the top plate near the fixed clamping plate. The movable ends of the multiple sets of elastic elements are fixedly connected to the movable clamping plate. A pressing screw for pressing down the movable clamping plate is threadedly connected to the top plate.

[0009] A further technical solution: The end of the movable clamp away from the slider is provided with an inclined surface structure that slopes away from the bottom plate, and multiple sets of telescopic rods are fixedly installed on the movable clamp, all of which are fixedly connected to the top plate.

[0010] A further technical solution: A vertical plate is slidably installed on the top plate, the vertical plate is located inside the two sets of top plates, the end of the vertical plate near the bottom plate is fixedly connected to the pressure plate, and a first fixing screw for fixing the position of the vertical plate is threaded on the top plate.

[0011] A further technical solution: The side of the movable frame is provided with a limiting plate that slides in contact with the base plate, and the side of the movable frame is rotatably mounted with an adjusting screw that drives the limiting plate to move. The side of the movable frame is fixedly mounted with a guide column for guiding the movement direction of the limiting plate.

[0012] A further technical solution: An operating handle for pushing the mobile frame to move is fixedly installed on the side.

[0013] A sewing method, applied to a sewing machine for producing reflective vests as described above, includes the following steps:

[0014] Step 1: Adjust the slider distance. Adjust the distance between the two sets of sliders according to the length of the Velcro sewn on the fixing strap, so that the distance between the two sets of sliders is slightly greater than the length of the Velcro.

[0015] Step 2: Install the fixing strap, straighten the fixing strap and fix both ends of the fixing strap to the movable clamp through the fixing clamp, and then make the fixing strap between the fixing clamps contact the base plate;

[0016] Step 3: Place the hook and loop fasteners on the fixing straps that are in contact with the base plate, making sure they are aligned. Use the pressure plate to press the hook and loop fasteners firmly onto the fixing straps from both ends of the fasteners.

[0017] Step 4: Sew the Velcro. Move the fastener and Velcro simultaneously using the moving frame, and then the sewing machine body can sew the Velcro and fastener together.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] 1. The fixing strap is always in contact with the base plate, eliminating the need for a guide needle groove. This allows the moving frame to move the fixing strap freely within the plane, avoiding the need for multiple adjustments and re-fixing of the fixing strap and Velcro. This allows the Velcro and fixing strap to be fixed and stacked before sewing, avoiding subsequent adjustments to the stacked position and reducing the time spent on adjusting the Velcro and fixing strap positions, thus increasing sewing speed.

[0020] 2. The two ends of the fastening strap are clamped and fixed using a fixed clamp and a movable clamp. The hook and loop fastener is pressed firmly onto the fastening strap using a pressure plate. At this time, the hook and loop fastener and the fastening strap are aligned. During sewing, the moving frame moves the fastening strap. Because the hook and loop fastener is pressed firmly onto the fastening strap by the pressure plate, the movement of the fastening strap moves the hook and loop fastener simultaneously, ensuring that the hook and loop fastener and the fastening strap always move synchronously. This prevents twisting and deformation between the hook and loop fastener and the fastening strap, ensuring that the hook and loop fastener and the fastening strap overlap neatly during sewing and preventing the hook and loop fastener and the fastening strap from becoming distorted after sewing, thus improving the quality and aesthetics of the stitching of the hook and loop fastener and the fastening strap. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0022] Figure 2 This is a schematic diagram of the adjusting screw in this invention.

[0023] Figure 3 This is a schematic diagram of the slider in this invention.

[0024] Figure 4 for Figure 1 A magnified view of region A1 in the middle.

[0025] In the attached diagram: 1. Base plate; 2. Guide frame; 3. Horizontal plate; 4. Moving frame; 5. Sewing machine body; 6. Slider; 7. Fixed clamping plate; 8. Top plate; 9. Movable clamping plate; 10. Elastic element; 11. Telescopic rod; 12. Downward screw; 13. Vertical plate; 14. Pressure plate; 15. First fixing screw; 16. Second fixing screw; 17. Adjusting screw; 18. Limiting plate; 19. Guide column; 20. Operating handle. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0027] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0028] like Figures 1-4 As shown, a sewing machine for producing reflective vests provided by the present invention includes a base plate 1, a frame-shaped movable frame 4 slidably mounted on the base plate 1, two sets of spaced sliders 6 slidably mounted on the movable frame 4, and a second fixing screw 16 threadedly connected to the sliders 6 for fixing their positions. Both sets of sliders 6 have a fixing clamp 7 and a movable clamp 9 on their sides for clamping the reflective vest fixing strap. Both sets of sliders 6 also have a pressure plate 14 on their sides for pressing the Velcro onto the reflective vest fixing strap. A sewing machine body 5 for sewing the Velcro and fixing strap is fixedly mounted on the base plate 1.

[0029] In practical application, the distance between the two sets of sliders 6 is adjusted according to the length of the Velcro sewn onto the fixing strap, so that the distance between the two sets of sliders 6 is slightly greater than the length of the Velcro. Then, the position of the sliders 6 is fixed by the second fixing screw 16. The fixing strap is then straightened and both ends of the fixing strap are respectively inserted between the fixing plates 7 and the movable plates 9 on both sides. The fixing plates 7 and the movable plates 9 clamp the two ends of the fixing strap. Then, the fixing strap between the fixing plates 7 contacts the base plate 1. At this time, the movable plates 9 are no longer in a movable state. The movable plates 9 and the fixing plates 7 completely fix the fixing strap. Then, the Velcro to be sewn can be placed on the fixing strap. Then, the pressure plate 14 presses the two ends of the Velcro, so that the Velcro is pressed tightly onto the fixing strap. The fixing strap is fixed to the movable frame 4 by the fixing plates 7 and the movable plates 9, and the fixing strap is fixed to the base plate 1. The contact plate 1 allows for the placement and fixation of the fixing strap and hook and loop fastener before sewing, ensuring the stability of their positions during subsequent movement. This allows for direct adjustment of the fixing strap and hook and loop fastener positions during sewing, avoiding the need to adjust them while sewing. This increases sewing speed and ensures the neatness of the fixing strap and hook and loop fastener, improving overall sewing quality. At this point, the moving frame 4 moves the fixing strap and hook and loop fastener to below the sewing needle on the sewing machine body 5, allowing sewing to begin. The simultaneous movement of the fixing strap and hook and loop fastener by the moving frame 4 prevents the worker from pulling on them with their fingers, avoiding contact between the worker's fingers and the fixing strap and hook and loop fastener during sewing, thus preventing injury from the sewing needle. After sewing is complete, the fixing plate 14 and the movable clamp 9 are released to remove the sewn fixing strap.

[0030] like Figure 1 , Figure 2 As shown, a sewing machine for producing reflective vests provided by the present invention has a guide frame 2 fixedly installed on one side surface of the base plate 1. A horizontal plate 3 is slidably installed on the horizontal section of the guide frame 2. The horizontal plate 3 is perpendicular to the horizontal section of the guide frame 2 and is slidably connected to the movable frame 4.

[0031] In practical application, the horizontal plate 3 moves along the length of the horizontal section of the guide frame 2, and the moving frame 4 moves along the length of the horizontal plate 3, thereby enabling the moving frame 4 to move freely in the horizontal plane, which allows the position to be sewn on the reflective vest to move freely and improves the flexibility of sewing.

[0032] like Figures 1-3 As shown, this invention provides a sewing machine for producing reflective vests. The fixed clamping plate 7 is fixedly installed on the side of the slider 6, and the end of the clamping plate 7 away from the slider 6 is provided with an inclined surface structure that slopes towards the base plate 1.

[0033] Specifically, a T-shaped top plate 8 is fixedly installed on the side of the slider 6. Multiple sets of spaced elastic elements 10 are fixedly installed on the surface of the top plate 8 near the fixed clamping plate 7. The movable ends of the multiple sets of elastic elements 10 are all fixedly connected to the movable clamping plate 9. A pressing screw 12 for pressing down the movable clamping plate 9 is threadedly connected to the top plate 8.

[0034] Specifically, the end of the movable clamping plate 9 away from the slider 6 is provided with an inclined surface structure that is inclined away from the base plate 1. Multiple sets of telescopic rods 11 are fixedly installed on the movable clamping plate 9, and all sets of telescopic rods 11 are fixedly connected to the top plate 8.

[0035] In practical application, the fixing strap on the luminous vest is straightened. The distance between the two sets of sliders 6 is adjusted according to the length of the Velcro sewn on the fixing strap, so that the distance between the two sets of sliders 6 is slightly greater than the length of the Velcro. Then, the fixing strap is straightened and the two ends of the Velcro sewn on the fixing strap are inserted between the fixing plate 7 and the movable plate 9. At this time, under the action of the elastic element 10, the movable plate 9 initially fixes the fixing strap on the fixing plate 7, thereby preventing the fixing strap from moving at will and facilitating the final fixation of the fixing strap. Then, the fixing strap is pressed down so that the fixing strap between the two sets of fixing plates 7 contacts the base plate 1. When the fixing strap between the two sets of fixing plates 7 is in complete contact with the base plate 1, the pressing screw 12 is rotated so that the pressing screw 12 presses the movable plate 9 tightly onto the fixing plate 7, thereby achieving complete fixation of the fixing strap. Then, the Velcro to be sewn can be placed on the horizontal fixing strap.

[0036] In one embodiment of the present invention, the elastic element 10 is a spring, or it can be other elastic components such as a bouncy ball. The spring applies a pushing force to the movable clamping plate 9, thereby enabling the movable clamping plate 9 to clamp the fixing band with the fixed clamping plate 7.

[0037] like Figure 1 , Figure 3 As shown, a sewing machine for producing reflective vests provided by the present invention has a vertical plate 13 slidably installed on the top plate 8. The vertical plate 13 is located inside the two sets of top plates 8. The end of the vertical plate 13 near the bottom plate 1 is fixedly connected to the pressure plate 14. The top plate 8 is threaded with a first fixing screw 15 for fixing the position of the vertical plate 13.

[0038] In practical application, after the hook and loop fastener is placed, the vertical plate 13 drives the pressure plate 14 to move downwards. The pressure plate 14 presses the edge of the hook and loop fastener and presses it firmly onto the fixing strap. At this time, the position of the vertical plate 13 is fixed by the first fixing screw 15, thereby fixing the pressure plate 14 and the hook and loop fastener. The positioning and fixing of the fixing strap and hook and loop fastener can be achieved before sewing, ensuring the stability of the position of the fixing strap and hook and loop fastener during subsequent movement. The position of the fixing strap and hook and loop fastener can be directly adjusted for sewing, avoiding the need to adjust the position of the fixing strap and hook and loop fastener while sewing, improving the sewing speed and ensuring the neatness of the fixing strap and hook and loop fastener, thus improving the subsequent sewing quality.

[0039] like Figure 1 , Figure 2 As shown, a sewing machine for producing reflective vests provided by the present invention has a limiting plate 18 that slides in contact with the base plate 1 on the side of the movable frame 4. An adjusting screw 17 for driving the limiting plate 18 to move is rotatably installed on the side of the movable frame 4. A guide column 19 for guiding the movement direction of the limiting plate 18 is fixedly installed on the side of the movable frame 4.

[0040] Specifically, the side of the movable frame 4 is fixedly equipped with an operating handle 20 for pushing it to move.

[0041] In practical application, according to the width of the fixing strap, the adjusting screw 17 drives the limiting plate 18 to a suitable position. When placing the fixing strap and hook and loop fastener, one edge of both is in contact with the limiting plate 18, thereby positioning the fixing strap and hook and loop fastener by the limiting plate 18, improving their neatness and subsequent sewing quality. Afterward, the limiting plate 18 returns to its original position. During sewing, the operating handle 20 drives the moving frame 4 to move, so that the sewing machine body 5 sews the fixing strap and hook and loop fastener. During sewing, the moving frame 4 drives the fixing strap and hook and loop fastener to move simultaneously, thereby preventing the worker from pulling the fixing strap and hook and loop fastener with their fingers, avoiding contact between the worker's fingers and the fixing strap and hook and loop fastener during sewing, and thus preventing the worker's fingers from being injured by the sewing needle.

[0042] like Figures 1-4 As shown, this invention provides a sewing method applied to a sewing machine for producing reflective vests, comprising the following steps:

[0043] Step 1: Adjust the distance between sliders 6. Adjust the distance between the two sets of sliders 6 according to the length of the Velcro sewn on the fixing strap, so that the distance between the two sets of sliders 6 is slightly greater than the length of the Velcro.

[0044] Step 2: Install the fixing strap, straighten the fixing strap and fix both ends of the fixing strap to the movable clamp 9 through the fixing clamp 7, and then make the fixing strap between the fixing clamp 7 contact the base plate 1;

[0045] Step 3: Place the hook and loop fasteners on the fixing strap that contacts the base plate 1 and make them aligned. Use the pressure plate 14 to press the hook and loop fasteners onto the fixing strap from both ends of the fasteners.

[0046] Step 4: Sew the Velcro. The moving frame 4 moves the fixing strap and the Velcro simultaneously, and then the sewing machine body 5 can sew the Velcro and the fixing strap.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

[0048] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A sewing machine for producing reflective vests, comprising a base plate (1), characterized in that, A frame-shaped movable frame (4) is slidably mounted on the base plate (1). Two sets of spaced sliders (6) are slidably mounted on the movable frame (4). The sides of the two sets of sliders (6) are provided with a fixed clamping plate (7) and a movable clamping plate (9) for clamping the reflective vest fixing strap. The sides of the two sets of sliders (6) are provided with a pressure plate (14) for pressing the Velcro onto the reflective vest fixing strap. A sewing machine body (5) for sewing Velcro and fixing strap is fixedly mounted on the base plate (1). The slider (6) is fixedly installed with a T-shaped top plate (8) on its side. Multiple sets of spaced elastic elements (10) are fixedly installed on the surface of the top plate (8) near the fixed clamping plate (7). The movable ends of the multiple sets of elastic elements (10) are fixedly connected to the movable clamping plate (9). A pressing screw (12) for pressing down the movable clamping plate (9) is threaded on the top plate (8). The movable clamp (9) is provided with an inclined surface structure that is inclined away from the bottom plate (1) at the end away from the slider (6). Multiple sets of telescopic rods (11) are fixedly installed on the movable clamp (9), and the multiple sets of telescopic rods (11) are fixedly connected to the top plate (8). A vertical plate (13) is slidably installed on the top plate (8). The vertical plate (13) is located inside the two sets of top plates (8). The end of the vertical plate (13) near the bottom plate (1) is fixedly connected to the pressure plate (14). A first fixing screw (15) for fixing the position of the vertical plate (13) is threaded on the top plate (8).

2. The sewing machine for producing reflective vests according to claim 1, characterized in that, A guide frame (2) is fixedly installed on one side surface of the base plate (1). A horizontal plate (3) is slidably installed on the horizontal section of the guide frame (2). The horizontal plate (3) is perpendicular to the horizontal section of the guide frame (2). The horizontal plate (3) is slidably connected to the moving frame (4).

3. The sewing machine for producing reflective vests according to claim 1, characterized in that, The fixed clamp (7) is fixedly installed on the side of the slider (6) and has an inclined structure that slopes towards the base plate (1) at the end away from the slider (6).

4. A sewing machine for producing reflective vests according to claim 1, characterized in that, The movable frame (4) is provided with a limiting plate (18) that slides in contact with the base plate (1) on its side. An adjusting screw (17) for driving the limiting plate (18) to move is rotatably installed on the side of the movable frame (4). A guide column (19) for guiding the movement direction of the limiting plate (18) is fixedly installed on the side of the movable frame (4).

5. A sewing machine for producing reflective vests according to claim 1, characterized in that, The side of the movable frame (4) is fixedly equipped with an operating handle (20) for pushing it to move.

6. A sewing method applied to a sewing machine for producing reflective vests as described in claim 1, characterized in that, The following steps are involved: Step 1: Adjust the distance between the sliders (6). Adjust the distance between the two sets of sliders (6) according to the length of the Velcro sewn on the fixing strap, so that the distance between the two sets of sliders (6) is slightly greater than the length of the Velcro. Step 2: Install the fixing strap, straighten the fixing strap and fix both ends of the fixing strap to the movable clamp (9) through the fixing clamp (7), and then make the fixing strap between the fixing clamp (7) contact the base plate (1); Step 3: Place the hook and loop fasteners on the fixing strap that contacts the base plate (1) and make them aligned. Use the pressure plate (14) to press the hook and loop fasteners onto the fixing strap from both ends of the fasteners. Step 4: Sew the Velcro. The moving frame (4) moves the fixing strap and the Velcro simultaneously, and then the sewing machine body (5) can sew the Velcro and the fixing strap.

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