Cutting equipment for cloth easy to curl

Abstract

The utility model discloses cutting equipment for cloth easy to curl, which comprises a rack, a platform, a belt conveying mechanism, a negative pressure device, a three-axis driving device, a cutting tool bit, a bulldozing device and a control system, the platform is arranged on the rack, the belt conveying mechanism is arranged on the upper surface of the platform, an air cavity is arranged on the platform, and the negative pressure device is arranged on the air cavity. The air cavity is provided with a plurality of air holes, and the negative pressure device is arranged on the lower bottom face of the platform and communicated with the air cavity. The bulldozing devices are arranged on the rack and located on the two opposite sides of the platform so as to bulldoze the curled edges on the two sides of the cloth. The cutting tool bit is arranged at the output end of the three-axis driving device. The three-axis driving device is arranged on the machine frame and located above the belt so as to drive the cutting tool bit to cut cloth. According to the cloth cutting device, curled edges of cloth can be bulldozed before cutting, the cloth cutting accuracy is improved, the cloth cutting quality is guaranteed, and the cloth utilization rate is increased.

Description

Technical Field

[0001] The utility model relates to a cloth cutting device, in particular to a cutting device for easily curling cloth. Background Art

[0002] The existing cloth cutting devices generally first convey the cloth onto a negative pressure platform, use the negative pressure platform to adsorb and position the cloth, and then use a cutting mechanism to cut the cloth. However, during the cloth conveying process, due to improper feeding, cloth tension or the influence of external air flow, the cloth may curl. When the curled cloth is conveyed onto the negative pressure platform, under the adsorption of the negative pressure platform, the cloth will wrinkle, and it is very difficult for these wrinkles to automatically return to a flat state under the suction of the negative pressure. Therefore, after the wrinkled part is cut, the cutting size of the cloth will change, resulting in inaccurate cloth cutting, affecting the cutting quality, and the cut cloth can only be used as waste, greatly reducing the utilization rate of the cloth. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a cutting device for easily curling cloth, which can push the curled edge of the cloth flat before cutting, improve the accuracy of cloth cutting, ensure the cloth cutting quality, and enhance the utilization rate of the cloth.

[0004] To achieve the above purpose, the cutting device for easily curling cloth provided by the utility model includes a frame, a platform, a belt conveying mechanism, a negative pressure device, a three-axis driving device, a cutting tool head, a flattening device and a control system. The platform is arranged on the frame, the belt conveying mechanism is arranged on the upper surface of the platform, an air cavity is arranged on the platform, the air cavity has a plurality of air holes penetrating the upper surface, the negative pressure device is arranged on the lower bottom surface of the platform and communicated with the air cavity to generate negative pressure on the surface of the belt conveying mechanism and adsorb the cloth on the surface of the belt; the flattening device is arranged on the frame and located on the opposite sides of the platform to push the curled edges on both sides of the cloth flat respectively; the cutting tool head is arranged at the output end of the three-axis driving device; the three-axis driving device is arranged on the frame and located above the belt to drive the cutting tool head to cut the cloth; the control system controls the operation of the belt conveying mechanism, the negative pressure device, the three-axis driving device, the cutting tool head and the flattening device.

[0005] Compared with the prior art, the utility model makes the surface of the belt conveying mechanism generate negative pressure by using a negative pressure device, thereby adsorbing the fabric on the surface of the belt. Moreover, leveling devices are arranged on both sides of the platform, and the leveling devices are used to level the curled edges on both sides of the fabric, so as to achieve the purpose of leveling and positioning the fabric. Therefore, the phenomenon that the fabric curls on the platform can be effectively prevented, thereby improving the accuracy of fabric cutting and ensuring the cutting quality of the fabric; and the fabric loss is greatly reduced, the utilization rate of the fabric is greatly improved, and the production cost is reduced.

[0006] Preferably, the leveling device includes a lifting mechanism, a telescopic mechanism and a pushing block. The lifting mechanism is arranged on the frame and the output end is connected with the telescopic mechanism. The output end of the telescopic mechanism is provided with the pushing block to push the pushing block to reciprocate along the direction perpendicular to the conveying direction of the belt. By using the lifting mechanism to lift or lower the pushing block, when rising, the pushing block can leave the fabric before pushing the fabric and extend to the middle of the fabric, avoiding interfering with the fabric, and when descending, the pushing block can be close to the fabric, thereby leveling the curled edge of the fabric and improving the leveling effect. Its structure is simple, the control is convenient, and the leveling effect is good.

[0007] Preferably, the pushing block is strip-shaped and extends along the conveying direction of the belt. In this way, a pushing block can level the curled edges of the fabric with a certain length, improving the efficiency of curling edge leveling.

[0008] Preferably, the cutting device for easily curled fabric further includes a CCD camera. The CCD camera is arranged above the belt conveying mechanism and is electrically connected with the control system to detect whether the fabric is curled. By using the CCD camera to detect the curling, the automation degree of the device can be improved, and the action of the leveling device can be controlled in a timely manner, avoiding the continuous useless work of the leveling device and increasing the energy consumption.

[0009] Specifically, the cutting device for easily curled fabric further includes a first projection device. The first projection device is arranged on the frame and above the belt conveying mechanism to project two parallel boundary light rays extending along the conveying direction of the belt onto the edge of the fabric; the CCD camera feeds back the position of the boundary light rays to the control system, and the control system controls the cutting tool head on the three-axis driving device to move and cut the fabric within the boundary light rays. By setting the first projection device, it can cooperate with the CCD camera to position the cutting within a certain range, which can not only effectively utilize the fabric, but also improve the accuracy of cutting.

[0010] Specifically, the first projection device is rotatably arranged on the frame. In this way, the projection range of the first projection device can be adjusted, so as to be applicable to different fabrics and improve the applicability of the device.

[0011] Specifically, the cutting device for easily curled fabric further includes a second projection device, which is arranged on the frame and above the belt conveying mechanism to project pattern light onto the surface of the fabric. The CCD camera feeds back the position of the pattern light to the control system, and the control system controls the cutting tool head on the three-axis driving device to cut the fabric along the pattern light. By setting the second projection device, the second projection device can project the cutting pattern light, and cooperate with the CCD camera, so that the control system can automatically generate the tool path and automatically cut out the projected pattern. Therefore, only need to pre-make the projected pattern in the system to achieve automatic cutting, and the degree of automation is extremely high.

[0012] Specifically, the second projection device is rotatably arranged on the frame. This can make the projection range of the second projection device adjustable, so as to be applicable to different fabrics and improve the applicability of the equipment.

[0013] Preferably, the three-axis driving device includes a horizontal translation driving mechanism, a vertical translation driving mechanism and a vertical translation driving mechanism. The output end of the horizontal translation driving mechanism is connected to the vertical translation driving mechanism, the output end of the vertical translation driving mechanism is connected to the vertical translation driving mechanism, and the output end of the vertical translation driving mechanism is connected to the cutting tool head.

[0014] Preferably, the cutting device for easily curled fabric further includes a fabric feeding mechanism, which includes a material roller and several guiding rollers. The fabric is released from the material roller, bypasses the guiding rollers and is conveyed onto the belt conveying mechanism. Description of the Drawings

[0015] Figure 1 is a perspective view of the cutting device for easily curled fabric of the present invention.

[0016] Figure 2 is an internal structure diagram of the cutting device for easily curled fabric of the present invention.

[0017] Figure 3 is a side view of the cutting device for easily curled fabric of the present invention.

[0018] Figure 4 is a top view of the cutting device for easily curled fabric of the present invention.

[0019] Figure 5 is a structure diagram of the flattening device of the cutting device for easily curled fabric of the present invention.

[0020] Figure 6 is a structure diagram of the three-axis driving device of the cutting device for easily curled fabric of the present invention.

[0021] Figure 7 It is a cross-sectional view of the belt conveying mechanism of the cutting device for easily curled fabric of the present utility model. Specific embodiments

[0022] To describe in detail the technical content, structural features, and achieved effects of the present utility model, the following will be described in detail in conjunction with the embodiments and with reference to the accompanying drawings.

[0023] As Figures 1 to 4 and Figure 7 shown, the cutting device 100 for easily curled fabric of the present utility model includes a frame 1, a platform 2, a belt conveying mechanism 3, a negative pressure device 4, a three-axis driving device 5, a cutting tool head 6, a flattening device 7, a fabric feeding mechanism 8, and a control system. The platform 2 is arranged on the frame 1. The belt conveying mechanism 3 is arranged on the upper surface of the platform 2. An air cavity 21 is provided on the platform 2. The air cavity 21 has a plurality of air holes 22 penetrating the upper surface. The negative pressure device 4 is arranged on the lower bottom surface of the platform 2 and communicated with the air cavity 21 to generate negative pressure on the surface of the belt conveying mechanism 3 and adsorb the fabric 200 on the surface of the belt. The flattening device 7 is arranged on the frame 1 and on opposite sides of the platform 2 to flatten the curled edges on both sides of the fabric 200 respectively. The cutting tool head 6 is arranged at the output end of the three-axis driving device 5. The three-axis driving device 5 is arranged on the frame 1 and above the belt to drive the cutting tool head 6 to cut the fabric 200. The fabric feeding mechanism 8 includes a material roll 81 and several guiding rollers 82. The fabric 200 is released from the material roll 81, bypasses the guiding rollers 82, and is conveyed onto the belt conveying mechanism 3. The control system controls the operation of the belt conveying mechanism 3, the negative pressure device 4, the three-axis driving device 5, the cutting tool head 6, the flattening device 7, and the fabric feeding mechanism 8.

[0024] Please refer to Figure 2 , Figure 4 and Figure 5As shown, the leveling device 7 includes a lifting mechanism 71, a telescopic mechanism 72 and a pushing block 73. The lifting mechanism 71 is arranged on the frame 1 and its output end is connected to the telescopic mechanism 72 to drive the telescopic mechanism 72 and the pushing block 73 to rise or fall. The output end of the telescopic mechanism 72 is provided with the pushing block 73 to push the pushing block 73 to reciprocate horizontally in a direction perpendicular to the conveying direction of the belt 33. In this embodiment, both the lifting mechanism 71 and the telescopic mechanism 72 are cylinders. The pushing block 73 is in a long strip shape and extends along the conveying direction of the belt 33. In this way, a single pushing block 73 can level the curled edges of the fabric 200 with a certain length, improving the efficiency of curling edge leveling. By using the lifting mechanism 71 to lift or lower the pushing block 73, when rising, the pushing block 73 can leave the fabric 200 before pushing the fabric and extend to the middle of the fabric 200, avoiding interference with the fabric. When descending, the pushing block 73 can be close to the fabric 200, thereby leveling the curled edges of the fabric 200, improving the leveling effect. Its structure is simple, the control is convenient, and the leveling effect is good.

[0025] Please refer to again Figure 2 and Figure 7 , the belt conveying mechanism 3 includes a driving roller 31, a driven roller 32 and a belt 33. The driving roller 31 and the driven roller 32 are respectively arranged at the front and rear ends of the platform 2. The belt 33 is wound between the driving roller 31 and the driven roller 32; the driving roller 31 is driven by a motor to make the belt 33 move along the surface of the platform 2 to convey the fabric 200. The belt 33 is a breathable belt 33, and the negative pressure on the upper surface of the platform 2 can pass through the breathable belt 33, so that a negative pressure is generated on the upper surface of the belt 33, thereby adsorbing the fabric 200 on the surface of the belt 33.

[0026] Please refer to again Figure 2 and Figure 3, the cutting device 100 for easily curling fabric further includes a CCD camera 9. The CCD camera 9 is arranged above the belt conveying mechanism 3 and electrically connected to the control system to detect whether the fabric 200 is curled by taking pictures. By using the CCD camera 9 to detect curling, it can not only improve the automation degree of the device, but also timely control the action of the flattening device 7 to avoid the flattening device 7 continuously doing useless work and increasing energy consumption. Specifically, the cutting device 100 for easily curling fabric further includes a first projection device 110. The first projection device 110 is arranged on the frame 1 and above the belt conveying mechanism 3 to project two parallel boundary light rays extending along the conveying direction of the belt 33 onto the edge of the fabric. The boundary light rays are projected onto both sides of the fabric to define the cutting range. The CCD camera 9 feeds back the position of the boundary light rays to the control system, and the control system controls the cutting tool head 6 on the three-axis driving device 5 to move and cut the fabric within the boundary light rays. By setting the first projection device 110, it can cooperate with the CCD camera 9 to position the cutting within a certain range, which can not only effectively utilize the fabric but also improve the cutting accuracy. The first projection device 110 is rotatably arranged on the frame 1. This can make the projection range of the first projection device 110 adjustable, so as to be applicable to different fabrics and improve the applicability of the device.

[0027] Please refer to again Figure 2 and Figure 3 , the cutting device 100 for easily curling fabric further includes a second projection device 120. The second projection device 120 is arranged on the frame 1 and above the belt conveying mechanism 3 to project pattern light rays onto the surface of the fabric. The CCD camera 9 feeds back the position of the pattern light rays to the control system, and the control system controls the cutting tool head 6 on the three-axis driving device 5 to cut the fabric 200 along the pattern light rays. By setting the second projection device 120, the second projection device 120 can project the cutting pattern light rays, and then cooperate with the CCD camera 9 to enable the control system to automatically generate a tool path and automatically cut out the projected pattern. Therefore, only by pre-making the projected pattern in the system can automatic cutting be achieved, and the automation degree is extremely high. The second projection device 120 is rotatably arranged on the frame 1. This can make the projection range of the second projection device 120 adjustable, so as to be applicable to different fabrics and improve the applicability of the device.

[0028] Please refer to Figure 2 and Figure 6, the three-axis driving device 5 includes a lateral translation driving mechanism 51, a longitudinal translation driving mechanism 52, and a vertical translation driving mechanism 53. The output end of the lateral translation driving mechanism 51 is connected to the longitudinal translation driving mechanism 52, the output end of the longitudinal translation driving mechanism 52 is connected to the vertical translation driving mechanism 53, and the output end of the vertical translation driving mechanism 53 is connected to the cutting tool head 6.

[0029] In summary, the working principle of the cutting device 100 for easily curling fabric of the present invention will be described as follows:

[0030] First, the fabric feeding mechanism 8 feeds out the fabric 200. The fabric passes through the surface of the platform 2. At the same time, the belt conveying mechanism 3 and the negative pressure device 4 are started. At this time, negative pressure is generated on the surface of the belt 33. The negative pressure causes the fabric 200 to be adsorbed and positioned on the surface of the belt 33, and the fabric is conveyed forward under the drive of the belt 33. When the fabric 200 moves to the middle of the platform 2 and is below the CCD camera 9, the belt conveying mechanism 3 pauses. During the above process, the flattening device 7 works simultaneously. The pushing block 73 unfolds or flattens the curled edge of the fabric 200, so that the fabric can be completely flattened on the platform 2 without wrinkles. And, the first projection device 110 projects two parallel boundary light rays onto the two side edges of the fabric 200 to assist in cutting. Then, the second projection device 120 projects pattern light rays onto the fabric 200. The CCD camera 9 takes pictures of the fabric 200 and sends the information to the control system. The control system generates a drive signal for controlling the three-axis drive device 5 according to the taken pictures, so as to control the movement of the three-axis drive device 5. The three-axis drive device 5 drives the cutting tool head 6 to move to the pattern light ray and cuts the fabric into the shape of the pattern light ray. When the cutting is completed, the belt conveying mechanism 3 starts again to drive the cut fabric 200 and the waste material out.

[0031] Compared with the prior art, the present invention uses the negative pressure device 4 to generate negative pressure on the surface of the belt conveying mechanism 3 to adsorb the fabric 200 on the surface of the belt 33, and a flattening device 7 is arranged on both sides of the platform 2. The flattening device 7 is used to flatten the curled edges on both sides of the fabric 200, so as to achieve the purpose of leveling and positioning the fabric 200. Therefore, the phenomenon that the fabric 200 curls on the platform 2 can be effectively prevented, thereby improving the accuracy of fabric cutting and ensuring the quality of fabric cutting; and, the fabric loss is greatly reduced, the utilization rate of the fabric is greatly improved, and the production cost is reduced.

[0032] The structures of the negative pressure device 4 and the cutting tool head 6 involved in the cutting device 100 for easily curling fabric of the present invention are well known to those of ordinary skill in the art and will not be described in detail here.

[0033] The above-disclosed are only the preferred examples of the present utility model. Of course, the scope of rights of the present utility model cannot be limited thereby. Therefore, equivalent changes made according to the scope of the patent application of the present utility model still fall within the scope covered by the present utility model.

Claims

1. A cutting device for easily curled fabric, characterized in that: The invention comprises a frame, a platform, a belt conveying mechanism, a negative pressure device, a three-axis driving device, a cutting head, a flattening device and a control system, wherein the platform is arranged on the frame, the belt conveying mechanism is arranged on the upper surface of the platform, an air cavity is arranged on the platform, and the air cavity has a plurality of air holes penetrating the upper surface, the negative pressure device is arranged on the lower bottom surface of the platform and communicates with the air cavity, so that negative pressure is generated on the surface of the belt conveying mechanism and the cloth is adsorbed on the surface of the belt; the flattening device is arranged on the frame and located on opposite sides of the platform, so as to flatten the curling edges on both sides of the cloth respectively; the cutting head is arranged at the output end of the three-axis driving device; the three-axis driving device is arranged on the frame and located above the belt, so as to drive the cutting head to cut the cloth; The control system controls the operation of the belt conveying mechanism, the negative pressure device, the three-axis driving device, the cutting head and the flattening device.

2. The cutting device for easy-to-curl fabric according to claim 1, characterized in that: The push-flattening device comprises a lifting mechanism, a telescopic mechanism and a push block. The lifting mechanism is arranged on the frame and an output end is connected to the telescopic mechanism. The push block is arranged at the output end of the telescopic mechanism to push the push block to reciprocate along a conveying direction perpendicular to the belt.

3. The cutting device for easy-to-curl fabric according to claim 2, characterized in that: The push block is in an elongated strip shape and extends along the conveying direction of the belt.

4. The cutting device for easy-to-curl fabric according to claim 1, characterized in that: The cutting device for the fabric that is easy to curl also includes a CCD camera, which is arranged above the belt conveying mechanism and is electrically connected to the control system to detect whether the fabric is curling.

5. The cutting device for easy-to-curl fabric according to claim 4, characterized in that: The cutting device for easy-to-curl fabric also includes a first projection device, which is arranged on the frame and located above the belt conveyor mechanism to project two boundary rays parallel to each other and extending along the conveying direction of the belt to the edge of the fabric; the CCD camera feeds back the position of the boundary rays to the control system, and the control system controls the cutting head on the three-axis drive device to move within the boundary rays to cut the fabric.

6. The cutting device for easy-to-curl fabric according to claim 5, characterized in that: The first projection device is rotatably arranged on the frame.

7. The cutting device for easy-to-curl fabric according to claim 4, characterized in that: The cutting equipment for easy-curling fabric also includes a second projection device, which is arranged on the frame and located above the belt conveyor mechanism to project pattern light onto the surface of the fabric. The CCD camera feeds back the position of the pattern light to the control system, and the control system controls the cutting head on the three-axis drive device to cut the fabric along the pattern light.

8. The cutting device for easy-to-curl fabric according to claim 7, characterized in that: The second projection device is rotatably arranged on the frame.

9. The cutting device for easy-to-curl fabric according to claim 1, characterized in that: The three-axis driving device includes a transverse translation driving mechanism, a longitudinal translation driving mechanism and a vertical translation driving mechanism. The output end of the transverse translation driving mechanism is connected to the longitudinal translation driving mechanism, the output end of the longitudinal translation driving mechanism is connected to the vertical translation driving mechanism, and the output end of the vertical translation driving mechanism is connected to the cutting head.

10. The cutting device for easy-to-curl fabric according to claim 1, characterized in that: The cutting device for the easily curled fabric also includes a fabric releasing mechanism, which includes a material roller and a plurality of guide rollers. After being released from the material roller, the fabric bypasses the guide rollers and is transported to the belt conveyor mechanism.

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