Fabric limiting mechanism and cloth cutting machine
Patent Information
- Application Number
- CN202522182005.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-15
- Publication Date
- 2026-10-09
- Estimated Expiration
- 2035-10-15
AI Technical Summary
[0003]本实用新型的主要目的在于提供一种面料限位机构及裁布机，可以有效解决裁剪过程中面料易移位导致尺寸不准，以及面料易起褶皱影响裁剪质量的问题
1、本实用新型提供一种面料限位机构及裁布机，通过伺服电机、双向丝杆的配合，并借助可翻转的压杆以及受L型挤压板触发的铰接压板机构，实现了面料在压紧状态下的自动双向展平与局部精准加压，依靠先压紧后展平，再局部加强压紧的顺序动作，有效避免了面料在拉伸平整过程中产生新的褶皱，提升了面料的定位平整效果和裁剪质量。
Smart Images
Figure CN224833315U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of fabric processing and cutting technology, and in particular to a fabric limiting mechanism and a fabric cutting machine. Background Technology
[0002] In the manufacturing industries of clothing and home textiles, fabric cutting machines are key equipment for cutting rolls or sheets of fabric into predetermined shapes. The precision of the cutting and the regularity of the fabric pieces directly affect the efficiency of subsequent sewing processes and the quality of the final product. The existing technology has the following problems: During the cutting process, the high-speed movement or vibration of the cutting blades in existing fabric cutting machines can easily cause localized shifts or stretching of the fabric. This problem is particularly prominent for fabrics with smooth surfaces and low friction, such as silk and synthetic fibers. The root cause is that the cutting blades generate significant inertial forces and vibrations during high-speed cutting. These forces are transmitted to the fabric through the cutting blades, while the static friction between the fabric and the worktable is insufficient to effectively resist this external interference. This causes the fabric to slip or stretch locally during the cutting process, resulting in the cut pieces not matching the design dimensions and having irregular edges, which seriously affects product quality. When fabric is laid manually or fed by equipment, wrinkles are easily formed. Traditional simple mechanical presser feet or backrest limiting methods have limited effectiveness in smoothing out wrinkles, and may even exacerbate wrinkles due to uneven pressure. The main reasons for this problem include: it is difficult to accurately control the fabric tension when laying fabric manually, which can easily lead to localized looseness or accumulation; if the tension control system is not precise when feeding fabric by equipment, it will also lead to uneven fabric distribution. In addition, traditional limiting devices mostly use point contact or line contact, resulting in discontinuous and concentrated pressure distribution, which cannot evenly and comprehensively flatten the fabric. Instead, stress concentration may cause new wrinkles during the pressing process, resulting in defective cut pieces. Utility Model Content
[0003] The main purpose of this utility model is to provide a fabric limiting mechanism and a fabric cutting machine, which can effectively solve the problems of fabric displacement during the cutting process leading to inaccurate dimensions and fabric wrinkling affecting cutting quality.
[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A fabric limiting mechanism and a fabric cutting machine include a fabric placement table. L-shaped extrusion plates are fixedly installed on the left and right sides of the top of the fabric placement table. A pressing drive mechanism is provided on one side of the fabric placement table. The pressing drive mechanism includes a drive cross plate, which is fixedly installed on the front side of the fabric placement table. The drive cross plate has a vertically penetrating sliding groove. A servo motor is fixedly installed at the left end of the drive cross plate. The output shaft of the servo motor passes through the inner cavity of the sliding groove and is fixedly installed with a bidirectional lead screw. The other end of the bidirectional lead screw is rotatably connected to the side wall of the sliding groove. The outer walls of the bidirectional lead screw have oppositely threaded walls on their left and right sides. A slider is threaded onto the outer wall of each of the two threaded walls. A fabric-pressing flipping pressing mechanism is hinged to the rear top of each of the two sliders. An adsorption steel plate is fixedly installed on the front top of each of the two sliders to restrict the rotation of the flipping pressing mechanism.
[0005] Preferably, a limiting slide rod is fixedly installed between the left and right sides of the inner wall of the sliding channel, and both sliders are slidably connected to the limiting slide rod. A one-line telescopic accordion cover is provided on the side of each of the two sliders, and the other end of the one-line telescopic accordion cover is connected to the left and right sides of the sliding channel, completely covering the top of the sliding channel to protect the bidirectional lead screw.
[0006] Preferably, the flipping pressing mechanism includes a flipping pressure rod, which is hinged to the top of the slider. An arc-shaped pressure strip is fixedly installed at the bottom of the flipping pressure rod, and the bottom of the arc-shaped pressure strip is in contact with the top of the fabric placement table. A magnetic plate is fixedly installed on the front side of the top of the flipping pressure rod. When the flipping pressure rod is in a 90-degree vertical state, the magnetic plate and the rear side of the adsorption steel plate are attracted to each other.
[0007] Preferably, the top of the flipping pressure rod is hinged to a hinge plate via a pivot, and a torsion spring is sleeved on the outer wall of the pivot between the hinge plate and the flipping pressure rod for the springback reset of the hinge plate. An L-shaped plate is fixedly installed at the top of the hinge plate, and a pressure plate is fixedly installed at the top vertical part of the L-shaped plate.
[0008] Preferably, when the two sliders move to the left and right edges of the sliding groove, the L-shaped extrusion plate presses the hinge plate at the horizontal position, allowing the hinge plate to rotate with the help of the pivot and torsion spring and remain in a horizontal state. When the hinge plate is in a horizontal state, the pressure plate presses on the fabric on the top of the fabric placement table.
[0009] Preferably, the top of the fabric placement table is provided with an embedding groove, and a negative pressure box is fixedly installed in the inner cavity of the embedding groove. The bottom of the negative pressure box has a rectangular array of adsorption micropores that penetrate its inner cavity. A negative pressure pipe that extends to the right side of the fabric placement table is fixedly connected to the right side of the negative pressure box, and the other end of the negative pressure pipe is connected to a vacuum pump or a vacuum generator.
[0010] A fabric cutting machine includes the aforementioned fabric limiting mechanism and a main body. The main body includes a guide rail, which is fixedly installed at the top center of the fabric placement table and above a negative pressure box. Two pressure plates are located on the left and right sides of the guide rail, respectively. A high-speed fabric cutter that can slide back and forth is provided on the top of the guide rail for cutting the fabric limited at the bottom of the guide rail.
[0011] Compared with the prior art, the present invention has the following beneficial effects: 1. This utility model provides a fabric limiting mechanism and a fabric cutting machine. Through the cooperation of a servo motor and a bidirectional lead screw, and with the help of a flip-up pressure bar and a hinged pressure plate mechanism triggered by an L-shaped extrusion plate, the automatic bidirectional flattening and local precise pressure of the fabric under the pressure state are realized. By relying on the sequential action of first pressing and then flattening, and then local strengthening of pressing, the new wrinkles generated in the fabric during the stretching and flattening process are effectively avoided, thereby improving the positioning and flatness effect and cutting quality of the fabric.
[0012] 2. This utility model provides a fabric limiting mechanism and a fabric cutting machine. By setting up a negative pressure adsorption system composed of a negative pressure box, adsorption micropores and negative pressure tubes, when the fabric is laid flat on the working surface, it can generate a uniform planar adsorption force, effectively eliminate the original wrinkles of the fabric and fix it stably on the table, prevent the fabric from shifting due to the high-speed movement of the cutting blade, and ensure the accuracy of the cutting size and the regularity of the edge of the material. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the pressing drive mechanism of this utility model; Figure 3 This is a schematic diagram of the flipping and pressing mechanism of this utility model; Figure 4 This is a schematic diagram of the flipping pressure bar and the pressure plate in the clamping state of this utility model; Figure 5 This is a schematic cross-sectional view of the negative pressure box of this utility model.
[0014] In the diagram: 1. Fabric placement table; 11. L-shaped extrusion plate; 12. Embedded groove; 13. Negative pressure box; 131. Adsorption micropores; 132. Negative pressure tube; 2. Pressing drive mechanism; 21. Drive cross plate; 22. Sliding through groove; 23. Servo motor; 24. Bidirectional lead screw; 25. Limiting slide bar; 26. Slider; 261. Adsorption steel plate; 27. Flipping pressing mechanism; 271. Flipping pressure bar; 272. Arc pressure strip; 273. Magnetic plate; 274. Hinge plate; 275. L-shaped plate; 276. Pressure plate; 3. Fabric cutting machine body; 31. Guide rail; 32. High-speed fabric cutting machine. Detailed Implementation
[0015] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.
[0016] Example 1 like Figure 1 , Figure 2 As shown, a fabric limiting mechanism and a fabric cutting machine include a fabric placement table 1. L-shaped extrusion plates 11 are fixedly installed on both the left and right sides of the top of the fabric placement table 1. A pressing drive mechanism 2 is provided on one side of the fabric placement table 1. The pressing drive mechanism 2 includes a drive horizontal plate 21, which is fixedly installed on the front side of the fabric placement table 1. The drive horizontal plate 21 has a vertically penetrating sliding groove 22. A servo motor 23 is fixedly installed at the left end of the drive horizontal plate 21. The output shaft of the servo motor 23 passes through the inner cavity of the sliding groove 22 and is fixedly installed with a bidirectional lead screw 24. The other end of the bidirectional lead screw 24 is rotatably connected to the side wall of the sliding groove 22. The outer walls of the bidirectional lead screw 24 are connected to the left and right sides of the sliding groove 22. Each of the two threaded walls has opposite threads, and a slider 26 is threadedly installed on the outer wall of each of the two threaded walls. A flipping pressing mechanism 27 for pressing the fabric is hinged to the rear top of each of the two sliders 26. An adsorption steel plate 261 is fixedly installed on the front top of each of the two sliders 26 to limit the rotation of the flipping pressing mechanism 27. A limit slide rod 25 is fixedly installed between the left and right sides of the inner wall of the sliding groove 22. Both sliders 26 are slidably connected to the limit slide rod 25. A one-line telescopic bellows cover is provided on the side of each of the two sliders 26, and the other end of the one-line telescopic bellows cover is connected to the left and right sides of the sliding groove 22, completely covering the top of the sliding groove 22 to protect the bidirectional lead screw 24. By activating the servo motor 23 on the left side of the drive plate 21, the rotation of the bidirectional lead screw 24 in the sliding groove 22 can be controlled. By using the threaded walls with opposite threads on the left and right sides of the outer wall of the bidirectional lead screw 24 to connect with the threads of the slider 26, the two sliders 26 can be controlled to drive the flipping pressing mechanism 27 to move away from each other, thereby flattening the fabric while it is being pressed down. After cutting, the output shaft of the servo motor 23 can be reversed, thereby driving the bidirectional lead screw 24 to reverse, so that the two sliders 26 control the two flipping pressing mechanisms 27 to move closer to each other.
[0017] like Figure 3 , Figure 4As shown, the flipping pressing mechanism 27 includes a flipping pressure rod 271, which is made of martensitic and ferritic stainless steel and can be attracted by a magnet. The flipping pressure rod 271 is hinged to the top of the slider 26. An arc-shaped pressure strip 272 is fixedly installed at the bottom of the flipping pressure rod 271, and the bottom of the arc-shaped pressure strip 272 is in contact with the top of the fabric placement table 1. A magnetic plate 273 is fixedly installed on the front top of the flipping pressure rod 271. When the flipping pressure rod 271 is in a 90-degree vertical state, the magnetic plate 273 attracts the rear side of the adsorption steel plate 261. The top of the flipping pressure rod 271 is hinged by a pivot. A hinge plate 274 is connected, and a torsion spring is sleeved on the outer wall of the pivot between the hinge plate 274 and the flipping pressure rod 271 for the springback reset of the hinge plate 274. An L-shaped plate 275 is fixedly installed at the top of the hinge plate 274, and a pressure plate 276 is fixedly installed at the top vertical part of the L-shaped plate 275. When the two sliders 26 move to the left and right sides of the sliding groove 22, the horizontal part of the L-shaped extrusion plate 11 extrudes the hinge plate 274, allowing the hinge plate 274 to rotate with the help of the pivot and the torsion spring and remain in a horizontal state. When the hinge plate 274 is in a horizontal state, the pressure plate 276 presses on the fabric on the top of the fabric placement table 1. In use, first place the fabric to be cut above the guide rail 31 and spread both ends outwards. Then, simply flip and lower the two left and right flipping pressure rods 271 using their hinges with the slider 26, so that the arc-shaped pressure strip 272 presses down on the fabric. The weight of the flipping pressure rods 271 can stably press down on the soft fabric, while the arc shape of the arc-shaped pressure strip 272 can prevent scratching the fabric. When the slider 26 moves to the outermost edge of the sliding groove 22, the horizontal position of the L-shaped extrusion plate 11 can be used to press the hinge plate 274, which is kept vertical by the torsion spring, so that the hinge plate 274 is pressed to a horizontal position. Then, the L-shaped plate 275 is used to flip and press down the pressure plate 276, thereby cutting the fabric. The fabric on both sides of the guide rail 31 is further pressed, so that the fabric at the top of the guide rail 31 is kept flatter and tighter, avoiding the cutting of wrinkled fabric. When the cutting is finished, the two sliders 26 control the two flipping pressing mechanisms 27 to move closer to each other until the hinge plate 274 is separated from the horizontal position of the L-shaped extrusion plate 11. The hinge plate 274 can then be lifted vertically under the action of the torsion spring, and drive the pressure plate 276 to be lifted. Then the flipping pressure rod 271 is flipped upward until the magnetic plate 273 and the adsorption steel plate 261 are attracted to each other and temporarily stabilized, so that the cut fabric can be easily removed. Then, new fabric is placed and the operation is repeated to realize the fabric cutting cycle.
[0018] like Figure 5As shown, the top of the fabric placement table 1 is provided with an embedding groove 12, and a negative pressure box 13 is fixedly installed in the inner cavity of the embedding groove 12. The bottom of the negative pressure box 13 has a rectangular array of adsorption micropores 131 that penetrate its inner cavity. A negative pressure tube 132 that penetrates to the right side of the fabric placement table 1 is fixedly connected to the right side of the negative pressure box 13. The other end of the negative pressure tube 132 is connected to a vacuum pump or a vacuum generator. Before positioning, when the entire piece of fabric is placed on the negative pressure box 13, the vacuum pump or vacuum generator can be connected through the negative pressure pipe 132 to make the inner cavity of the negative pressure box 13 into a negative pressure state. The airflow passes through the adsorption micropores 131 to evenly and integrally adsorb the fabric laid flat on the working surface above the negative pressure box 13, so that the fabric is close to the table surface and naturally flattened. This full-plane adsorption force can effectively eliminate the original wrinkles of the fabric and provide a continuous and stable fixing force throughout the cutting process, fundamentally preventing the fabric from shifting due to the movement of the cutting knife.
[0019] It is worth mentioning that the adsorption micropores 131 have small pore sizes and are arranged in multiple rows, which is insufficient to adsorb the fabric into the adsorption micropores 131.
[0020] Example 2 like Figure 1-5 As shown, a fabric cutting machine includes a fabric limiting mechanism as described in Embodiment 1, and also includes a fabric cutting machine body 3. The fabric cutting machine body 3 includes a guide rail 31, which is fixedly installed at the top center of the fabric placement table 1 and located above the negative pressure box 13. Two pressure plates 276 are respectively located on the left and right sides of the guide rail 31. A high-speed fabric cutter 32 that can slide back and forth is provided on the top of the guide rail 31 for cutting the fabric that is limited at the bottom of the guide rail 31. When the fabric limiting operation is completed, the high-speed fabric cutter 32 can be started, causing it to move back and forth rapidly on the guide rail 31. The high-speed fabric cutter 32 includes a disc cutter that rotates at high speed under the drive of a motor, while moving forward along the predetermined cutting line on the guide rail 31. It uses the sharp blade to cut the fabric instantly. The high-speed fabric cutter 32 uses the Three Horses TH-108A track-type fabric cutter, which supports fully automatic cutting. The high-speed fabric cutter 32 is used in conjunction with the guide rail 31. During operation, the fabric is placed on the guide rail, and the high-speed fabric cutter 32 cuts the fabric that is pressed on the upper surface of the guide rail 31. This is existing technology, and its specific working principle will not be described in detail here.
[0021] The following section will explain in detail the working principle of the fabric limiting mechanism and the fabric cutting machine.
[0022] like Figure 1-5As shown, in use, first place the fabric to be cut above the guide rail 31 and spread both ends out to the sides. Then, simply flip and lower the two left and right flipping pressure rods 271 by means of their hinge with the slider 26, so that the arc-shaped pressure strip 272 presses down on the fabric. The weight of the flipping pressure rods 271 can stably press down on the soft fabric, while the arc shape of the arc-shaped pressure strip 272 can prevent scratching the fabric. Then, start the servo motor 23 on the left side of the drive plate 21 to control the rotation of the bidirectional lead screw 24 in the sliding groove 22. The two sliders can be controlled by the threaded walls on the left and right sides of the outer wall of the bidirectional lead screw 24 with opposite threads and the threaded connection with the slider 26. 26 drives the flipping and pressing mechanism 27 to move away from each other, thereby pressing down and flattening the fabric. Simultaneously, when the slider 26 moves to the outermost edge of the sliding groove 22, the L-shaped extrusion plate 11 presses down on the hinge plate 274, which is kept vertical by the torsion spring, thus pressing the hinge plate 274 to a horizontal position. The L-shaped plate 275 then flips and presses down the pressure plate 276, further pressing down the fabric on both sides of the guide rail 31. This keeps the fabric at the top of the guide rail 31 flatter and tighter, preventing wrinkles during cutting. Furthermore, before positioning, when the entire fabric is placed on the negative pressure box 13, it is... Connecting the negative pressure pipe 132 to a vacuum pump or vacuum generator creates a negative pressure state inside the negative pressure box 13. Airflow passes through the adsorption micropores 131, evenly and uniformly adsorbing the fabric laid flat on the working surface above the negative pressure box 13 downwards, causing the fabric to adhere tightly to the work surface and naturally flatten. This all-plane adsorption force effectively eliminates the original wrinkles of the fabric and provides continuous and stable fixing force throughout the cutting process, fundamentally preventing fabric displacement caused by the movement of the cutting blade. When the fabric's limiting work is finished, the high-speed fabric cutter 32 can be started, causing it to move rapidly back and forth on the guide rail 31, using the blade to cut the flat fabric on the guide rail 31. After neat cutting, the output shaft of the servo motor 23 is reversed, which drives the bidirectional lead screw 24 to reverse, causing the two sliders 26 to control the two flipping pressing mechanisms 27 to move closer to each other until the hinge plate 274 is separated from the horizontal position of the L-shaped extrusion plate 11. The hinge plate 274 can then be lifted vertically under the action of the torsion spring, and drive the pressure plate 276 to be lifted. Then the flipping pressure rod 271 is flipped upward until the magnetic plate 273 and the adsorption steel plate 261 are attracted to each other and temporarily stabilized, so that the cut fabric can be easily removed. Then, new fabric can be placed and the operation can be repeated to realize the fabric cutting cycle.
[0023] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A fabric limiting mechanism, comprising a fabric placement table (1), characterized in that: L-shaped extrusion plates (11) are fixedly installed on the top left and right sides of the fabric placement table (1). A pressing drive mechanism (2) is provided on one side of the fabric placement table (1). The pressing drive mechanism (2) includes a drive horizontal plate (21). The drive horizontal plate (21) is fixedly installed on the front side of the fabric placement table (1). The drive horizontal plate (21) has a sliding groove (22) that runs vertically through it. A servo motor (23) is fixedly installed on the left end of the drive horizontal plate (21). The output shaft of the servo motor (23) passes through the sliding groove (22). The inner cavity of the slide groove (22) is fixedly installed with a bidirectional lead screw (24). The other end of the bidirectional lead screw (24) is rotatably connected to the side wall of the slide groove (22). The outer walls of the bidirectional lead screw (24) are respectively provided with threaded walls with opposite threads on the left and right sides. The outer walls of the two threaded walls are threaded with sliders (26). The rear top of the two sliders (26) is hinged with a flipping pressing mechanism (27) for pressing the fabric. The front top of the two sliders (26) is fixedly installed with an adsorption steel plate (261) to restrict the rotation of the flipping pressing mechanism (27).
2. The fabric limiting mechanism according to claim 1, characterized in that: Limiting slide rods (25) are fixedly installed between the left and right sides of the inner wall of the sliding groove (22). Both sliders (26) are slidably connected to the limiting slide rods (25). A one-line telescopic bellows cover is provided on the side of each of the two sliders (26), and the other end of the one-line telescopic bellows cover is connected to the left and right sides of the sliding groove (22), completely covering the top of the sliding groove (22) to protect the bidirectional lead screw (24).
3. The fabric limiting mechanism according to claim 1, characterized in that: The flipping pressing mechanism (27) includes a flipping pressing rod (271), which is hinged to the top of the slider (26). A circular arc pressing strip (272) is fixedly installed at the bottom of the flipping pressing rod (271). The bottom of the circular arc pressing strip (272) is in contact with the top of the fabric placement table (1). A magnetic plate (273) is fixedly installed on the front side of the top of the flipping pressing rod (271). When the flipping pressing rod (271) is in a 90-degree vertical state, the magnetic plate (273) and the rear side of the adsorption steel plate (261) are mutually adsorbed.
4. The fabric limiting mechanism according to claim 3, characterized in that: The top of the flipping pressure rod (271) is hinged to a hinge plate (274) via a pivot. A torsion spring is sleeved on the outer wall of the pivot between the hinge plate (274) and the flipping pressure rod (271) for the springback reset of the hinge plate (274). An L-shaped plate (275) is fixedly installed at the top of the hinge plate (274), and a pressure plate (276) is fixedly installed at the top vertical part of the L-shaped plate (275).
5. A fabric limiting mechanism according to claim 4, characterized in that: When the two sliders (26) move to the left and right sides of the sliding groove (22), the L-shaped extrusion plate (11) presses the hinge plate (274) at the horizontal position, allowing the hinge plate (274) to rotate with the help of the pivot and torsion spring and remain horizontal. When the hinge plate (274) is horizontal, the pressure plate (276) presses on the fabric on the top of the fabric placement table (1).
6. The fabric limiting mechanism according to claim 1, characterized in that: The fabric placement table (1) has an embedded groove (12) on its top. A negative pressure box (13) is fixedly installed in the inner cavity of the embedded groove (12). The bottom of the negative pressure box (13) has a rectangular array of adsorption micropores (131) that penetrate its inner cavity. A negative pressure pipe (132) that penetrates to the right side of the fabric placement table (1) is fixedly connected to the right side of the negative pressure box (13). The other end of the negative pressure pipe (132) is connected to a vacuum pump or a vacuum generator.
7. A fabric cutting machine, characterized in that: The fabric limiting mechanism includes the fabric cutting machine body (3) as described in claim 1 or 6. The fabric cutting machine body (3) includes a guide rail (31). The guide rail (31) is fixedly installed at the top center of the fabric placement table (1) and above the negative pressure box (13). Two pressure plates (276) are respectively located on the left and right sides of the guide rail (31). A high-speed fabric cutter (32) that can slide back and forth is provided on the top of the guide rail (31) for cutting the fabric that is limited at the bottom of the guide rail (31).