A material pressing component and a cutting device

Abstract

The present application provides a blank holding component for a cutting device, which includes a blank holding frame and a blank holding plate. The blank holding plate is mounted on the blank holding frame in a manner that can rotate relative to the blank holding frame. The blank holding frame is mounted together with the frame of the cutting head of the cutting device and can move following the cutting head. When the cutting head cuts the sheet material, the blank holding plate contacts the sheet material and applies a certain force to make the sheet material flatter. When the cutting head moves relative to the sheet material, the blank holding plate rotates or moves freely under the action of the frictional force between the blank holding plate and the sheet material. When the cutting head of the cutting device moves at high speed, the blank holding plate of the blank holding component contacts the sheet material to generate a certain frictional force. Although the blank holding plate has a rotation center during rotation, the frictional force is uneven. In this way, the blank holding plate will rotate randomly, reducing the overall resistance and the force on the blank holding plate. Similarly, the force on the sheet material will also be reduced. In this way, when cutting at high speed, the sheet material is not easily wrinkled, and the cutting speed can be further increased.

Description

Technical Field

[0001] The present application relates to the technical field of cutting, and particularly relates to a material pressing component and a cutting device. Background Art

[0002] Existing cutting devices are generally used for cutting relatively soft sheet materials, such as leather, fabric, PVC mesh fabric, eva foam, etc. Especially when cutting relatively thin leather or fabric, since the local part of the leather or fabric may be uneven, it will affect the cutting effect and efficiency. Therefore, a material pressing component such as a pressure plate is generally provided. However, the existing pressure plates are usually fixed together with the head of the cutting device. In this way, the friction between the pressure plate and the sheet material to be cut is relatively large. During high-speed cutting, due to the unevenness of the sheet material, the resistance will be further increased. When the resistance increases to a certain value, the movement of the pressure plate will cause local wrinkling of the sheet material or the sheet material to move. This not only affects the cutting accuracy, but may also cause the scrapping of the sheet material, which not only affects the processing accuracy, but also increases the processing cost.

[0003] Chinese Patent Publication No. "CN104608162A" with the patent name of "A Numerical Control Coiled Material Vibration Knife Cutting Equipment" discloses a cutting equipment, in which the pressure plate is directly fixed on the tool rest sleeve, so the frictional resistance is relatively large during high-speed movement.

[0004] Chinese Patent Publication No. "CN108866251A" with the patent name of "An Efficient Leather Cutting Device for Sofa Processing" discloses a cutting device, which uses the pulley under the pressing block to reduce the friction with the leather. However, such a design is very likely to cause scratches on the leather and cannot cope with rotations in different directions.

[0005] Chinese Patent Publication No. "CN109971896B" with the patent name of "A Vibration Knife Leather Cutting Equipment with a Leather-Friendly Presser Foot" discloses a cutting equipment, which uses a friction-reducing roller to reduce the friction with the leather. Although it can cope with different directions, its contact area is small, the effect of pressing the material is poor, and the structure is complex, and the manufacturing cost is relatively high.

[0006] Chinese Patent Publication No. "CN111376323A" with the patent name of "A High-Speed Cutting Head and Cutting Device for Soft Materials" discloses a cutting device. Although a rotating cutter disc is provided, this rotating cutter disc assembly is used to drive the cutting tool to turn. Thus, when the cutting tool does not rotate, the rotating cutter disc will surely not rotate. That is to say, in terms of the friction force received by the cutter disc, it is basically the same as the patent solution of "CN104608162A". There is also a relatively large friction force during high-speed movement, and it is easy to squeeze the leather to cause wrinkling of the leather and affect the cutting.

[0007] The Chinese patent publication number "CN114872120B" with the patent name "A Stable Structure of a Cutting Machine with a Five-Axis Double Tool Holder" discloses a cutting structure. Its pressure plate box is installed on the limit strengthening ring. That is to say, the pressure plate box is basically the same as the patent solution of "CN104608162A". There is also a relatively large friction force, which easily squeezes the leather, causing the leather to wrinkle and affecting the cutting. Although a bearing is installed, the function of the bearing is to limit or guide the cutting knives in different directions. Even if the bearing is not on the pressure plate box, the same technical effect can be achieved. During cutting, the pressure plate box never rotates, only the internal cutting knives rotate to achieve cutting in different directions. Summary of the Invention

[0008] In view of the above-mentioned prior art, the object of the present application is to propose a pressure feeding assembly and a cutting device, which can not only reduce the friction force between the pressure feeding assembly and the sheet material to be pressed when the cutting device moves, but also have a simple structure and will not produce indentations on the surface of the material to be pressed.

[0009] According to the first aspect of the present application, there is provided a pressure feeding assembly for a cutting device, including a pressure feeding frame and a pressure plate. The pressure plate is installed on the pressure feeding frame in a manner that can rotate relative to the pressure feeding frame. The pressure feeding frame is installed together with the frame of the cutting device head and can move following the head. When the head cuts the sheet material, the pressure plate contacts the sheet material and applies a certain force to make the sheet material flatter. When the head moves relative to the sheet material, the pressure plate freely rotates or moves under the action of the friction force between it and the sheet material.

[0010] Compared with the prior art, a pressure feeding assembly of the present application has the following beneficial effects: When the head of the cutting device moves at a high speed, the pressure plate of the pressure feeding assembly contacts the sheet material to generate a certain friction force. The pressure plate can rotate and has a rotation center, but it is difficult to balance the friction forces on both sides of the rotation center. Once the friction force on one side of the rotation center is greater than that on the other side, the pressure plate will rotate, which can reduce the resistance generated on the side with a larger friction force and make the overall resistance smaller. In addition, the static friction force generated between the leather and the metal surface is greater than the dynamic friction force. When the pressure plate rotates, although the relative speed of some positions with respect to the sheet material is small, if these positions are regarded as having no relative movement, they will basically not generate resistance to the movement of the pressure plate. The friction forces at other positions will also increase, so the resistance generated by the overall friction force will decrease. Just like the rolling friction force is less than the flat surface moving friction force, and the force is mutual. The force on the pressure plate decreases, and the force on the sheet material will also decrease. In this way, when cutting at a high speed, the sheet material is not easily wrinkled, and the cutting speed can be further increased.

[0011] In an implementable embodiment, the pressure plate is installed on the pressure feeding frame through a bearing. The pressure plate is provided with a bottom surface and a side surface. The side surface is a conical surface, and the bottom surface is an annular shape.

[0012] In an implementable embodiment, the pressure plate holder is provided with a first rod and a second rod, and the machine head is provided with a first sliding hole and a second sliding hole. The first rod is installed in the first sliding hole such that the first rod can move up and down relative to the first sliding hole, and the second rod is installed in the second sliding hole such that the second rod can move up and down relative to the second sliding hole.

[0013] In an implementable embodiment, the pressure plate holder and the machine head are fixedly connected through a sliding track such that the pressure plate holder can move up and down relative to the machine head within a certain range.

[0014] In an implementable embodiment, a first spring and a second spring are provided between the pressure plate holder and the machine head. The first spring generates an upward elastic force on the pressure plate holder, and the second spring generates a downward elastic force on the pressure plate holder, such that the pressure plate holder is subjected to the elastic forces of the first spring and the second spring when moving up and down.

[0015] In an implementable embodiment, a first adjusting member and a first positioning sleeve are provided between the pressure plate holder and the machine head. The first end of the first adjusting member abuts against the first spring or the second spring, the first positioning sleeve abuts against the second end of the first spring and also abuts against the second end of the second spring, and the first adjusting member adjusts the compression amounts of the first spring and the second spring by adjusting its position relative to the first positioning sleeve, thereby changing the position of the pressure plate holder.

[0016] In an implementable embodiment, the pressure plate is installed on the pressure plate holder through a self-aligning ball bearing. The relative inclination range between the center lines of the inner and outer rings of the self-aligning ball bearing does not exceed 3°, and the bottom surface of the pressure plate is conical with a cone angle less than 5°.

[0017] In an implementable embodiment, the pressure plate is provided with a bottom surface and a side surface. The side surface is conical, the bottom surface is an annular plane, a bearing installation hole is provided at the center of the pressure plate, the bearing installation hole is eccentrically arranged, a first inclined cutting surface is provided on the side where the bearing installation hole deviates, and a second inclined cutting surface is provided on the opposite side, such that inclined upward slopes are formed on both sides of the bearing installation hole.

[0018] According to the second aspect of the present application, a cutting device includes a machine head on which the above-mentioned pressure device is installed.

[0019] In an implementable embodiment, the machine head is provided with a first punch, and the first punch is provided with a first pressure foot.

[0020] In an implementable embodiment, the machine head is provided with a mechanical vibrating cutter head or a pneumatic vibrating cutter head to achieve cutting by using high-frequency vibration.

[0021] Compared with the prior art, a cutting device of the present application has the following beneficial effects: By using the above-mentioned pressure component, the cutting device can reduce the moving resistance during cutting, reduce the phenomenon of sheet wrinkling, make the cutting more stable, and also have higher cutting efficiency.

[0022] It should be understood that the content described in this section is not intended to identify the key or important features of the embodiments of the present application, nor is it used to limit the scope of the present application. Other features of the present application will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] By referring to the drawings and reading the following detailed description, the above and other objects, features, and advantages of the exemplary embodiments of the present application will become easily understood. In the drawings, several embodiments of the present application are shown in an exemplary rather than restrictive manner, where:

[0024] In the drawings, the same or corresponding reference numerals represent the same or corresponding parts.

[0025] Figure 1 A three-dimensional schematic diagram of the blank holding assembly according to an embodiment of the present application is shown;

[0026] Figure 2 An exploded schematic diagram of the blank holding assembly according to an embodiment of the present application is shown;

[0027] Figure 3 A three-dimensional schematic diagram of the head of the cutting device according to an embodiment of the present application is shown;

[0028] Figure 4 A side schematic diagram of the head of the cutting device according to an embodiment of the present application is shown;

[0029] Figure 5 Shows Figure 4 A cross-sectional schematic diagram in the A-A direction in;

[0030] Figure 6 Shows Figure 4 A cross-sectional schematic diagram in the B-B direction in;

[0031] Figure 7 A front schematic diagram of the head of the cutting device according to an embodiment of the present application is shown;

[0032] Figure 8 Shows Figure 7 A cross-sectional schematic diagram in the C-C direction in;

[0033] Figure 9 A three-dimensional schematic diagram of the head of the cutting device according to an embodiment of the present application is shown;

[0034] Figure 10 A cross-sectional schematic diagram of the head of the cutting device according to an embodiment of the present application is shown;

[0035] Figure 11 Shows Figure 10 A partial enlarged schematic diagram at D in;

[0036] Figure 12The three-dimensional schematic diagram of the pressure plate of the pressure component in the embodiment of the present application is shown;

[0037] Figure 13 The side schematic diagram of the pressure plate of the pressure component in the embodiment of the present application squeezing the sheet material is shown. Detailed implementation manners

[0038] To make the objectives, features, and advantages of the present application more obvious and understandable, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present application.

[0039] Embodiment 1:

[0040] Such as Figure 1 、 Figure 2 、 Figure 3 And Figure 13As shown in the figure, a material pressing component for a cutting device includes a material pressing frame 11 and a material pressing plate 12. The material pressing plate 12 is installed on the material pressing frame 11 in a manner that can rotate relative to the material pressing frame 11. The material pressing frame 11 is installed together with the frame 21 of the cutting head 2 of the cutting device and can move linearly following the cutting head 2. When the cutting head 2 cuts the sheet material 3, the material pressing plate 12 contacts the sheet material 3 and applies a certain force to make the sheet material 3 flatter. When the cutting head 2 moves relative to the sheet material 3, the material pressing plate 12 freely rotates or moves under the frictional force between it and the sheet material 3. The sheet material 3 can be leather, fabric, PVC laminated fabric, EVA foam, etc. However, leather is more difficult to cut compared to other materials. Therefore, the technical effect of the embodiments of this application is more obvious for cutting leather. Because leather is harder than other materials, a material pressing plate 12 is needed to limit the position of the leather during cutting. The prior art has a relatively large resistance without improvement, especially prone to accidents during high-speed cutting, such as local blockage and wrinkling, forcing the machine to stop and requiring manual intervention, resulting in low production efficiency. After improving the material pressing plate 12 with the technical solution of this application, the resistance can be greatly reduced, reducing accidents during production, avoiding a large amount of leather being scrapped due to cutting errors, and reducing production costs. Even for the same leather material, the friction coefficients at different positions are different, and the change in the friction coefficient in some areas is relatively large. In this case, when using a common pressing plate structure, the resistance changes greatly. However, adopting the technical solution of this application can balance this change, especially when the frictional forces on both sides of the rotation center of the material pressing plate 12 are uneven, it has an obvious effect. By rotating, this frictional resistance can be reduced. Even if the frictional forces on both sides are not very different, rotating can also reduce the frictional force on one side to reduce the overall resistance. Of course, when the frictional forces on both sides are the same, rotation may not occur, but this is an ideal state. Due to the influence of various factors such as the roughness and thickness of the material, it is difficult to achieve a balanced state, and this has been verified in the actual processing process. Especially when using a better bearing, the material pressing plate 12 always rotates or rotates back and forth during the movement process. The normal pressure between the material pressing plate 12 and the sheet material 3 is generally controlled at about 1N - 10N, preferably 2N. When the normal pressure is controlled at 2N, the cutting with the moving material pressing plate 12 is relatively stable.

[0041] As Figure 1 and Figure 2 shown in the figure, the material pressing plate 12 is installed on the material pressing frame 11 through a bearing 126. The material pressing plate 12 is provided with a bottom surface 121 and a side surface 122. The side surface 122 is a conical surface. For a small pressing plate, the cone angle of the conical surface is about 45°. The bottom surface 121 is in a circular ring shape and can be a flat ring surface. The bottom surface 121 and the conical surface are transitioned through a fillet. The bottom surface 121 can also be designed as a square or an ellipse as long as it can rotate relative to the material pressing frame 11. However, relatively speaking, the resistance is large but the material pressing effect is not much different. Therefore, a disc-shaped structure is commonly used.

[0042] AsFigure 1 and Figure 2 As shown in Figure 2 , the blank holder 11 is provided with a first rod 111 and a second rod 112, and the machine head 2 is provided with a first sliding hole 211 and a second sliding hole 212. The first rod 111 is installed in the first sliding hole 211 so that the first rod 111 can move up and down relative to the first sliding hole 211, and the second rod 112 is installed in the second sliding hole 212 so that the second rod 112 can move up and down relative to the second sliding hole 212. The blank holder 11 is provided with a first hole 113 and a second hole 114. The first rod 111 is installed in the first hole 113, and the second rod 112 is installed in the second hole 114. The first hole 113 is provided with a first locking groove 115, and the second hole 114 is provided with a second locking groove 116. The width of the first locking groove 115 can be adjusted by screws. After the width changes, the size of the first hole 113 also changes. Locking of the first rod 111 can be achieved by reducing the width of the first locking groove 115. Similarly, locking of the second rod 112 can be achieved by reducing the width of the second locking groove 116.

[0043] As Figure 1 and Figure 2 shown in Figure 2 , a first spring 213 and a second spring 214 are provided between the blank holder 11 and the machine head 2. The first spring 213 generates an upward elastic force on the blank holder 11, and the second spring 214 generates a downward elastic force on the blank holder 11, so that the blank holder 11 is subjected to the elastic forces of the first spring 213 and the second spring 214 when moving up and down.

[0044] As Figure 1 , Figure 2 and Figure 5 shown in Figure 1 , Figure 2 and Figure 5 , a first adjusting member 215 and a first positioning sleeve 216 are provided between the blank holder 11 and the machine head 2. The first end of the first adjusting member 215 abuts against the first spring 213 or abuts against the second spring 214. The first positioning sleeve 216 abuts against the second end of the first spring 213 and also abuts against the second end of the second spring 214. The first adjusting member 215 adjusts the compression amount of the first spring 213 and the second spring 214 by adjusting its position relative to the first positioning sleeve 216, thereby changing the position of the blank holder 11. The first positioning sleeve 216 can be set as an upper sleeve 217 and a lower sleeve 218 which are installed in the first sliding hole 211 of the machine head 2. This is convenient for replacement and can be used in combination with other sleeves of the same model. The pressure of the pressure plate 12 on the sheet material 3 is not the greater the better. Instead, a smaller pressure results in a smaller frictional resistance. In this way, during the high-speed cutting process, it is not easy to generate a large acting force with the sheet material 3 such as leather. Since the thickness of the sheet material 3 is not necessarily very uniform, some areas are thicker and some areas are thinner. When the pressure plate 12 moves to a thicker area, the frictional resistance is relatively large. The up-and-down spring structure can reduce the amplitude of the increase in resistance. The frictional resistance is related to the magnitude of the normal pressure. The double-spring structure can keep the normal pressure in a smaller state and can ensure the limiting function for the sheet material 3, avoiding the sheet material 3 from warping and making the sheet material 3 close to the workbench surface.

[0045] Example 2:

[0046] As Figure 3 and Figure 4 shown, the cutting device includes a machine head 2 equipped with the material pressing device 1 of Example 1. The machine head 2 is further provided with a cutter head 22, a first driving mechanism 23, a second driving structure 24, a tool holder 25 and a frame 21. The cutter head 22 is installed on the tool holder 25, and the tool holder 25 is installed on the frame 21. The first driving mechanism 23 drives the cutter head 22 to rotate, and the second driving structure 24 provides the power for the vibration of the cutter head 22 and the driving force for the up and down movement. The cutter head 22 cuts the sheet material 3 under the condition of high-frequency vibration, and a good cutting effect can be obtained. In the embodiment, the second driving structure 24 uses a pneumatic vibration cutter head 22 to utilize the pneumatic structure to realize high-frequency vibration to drive the cutter head 22 for cutting. Of course, a motor can also be set to realize the mechanical vibration of the cutter head 22 through a transmission structure.

[0047] As Figure 5 shown, the material pressing device 1 realizes the limiting function through the first spring 213 and the second spring 214. By adjusting the compression amount of the first spring 213 and the second spring 214, the position of the material pressing device 1 can be controlled. The cutter head 22 is located at the central hole position of the material pressing device 1, and the cutter head 22 rotates following the first driving structure to realize cutting in different directions.

[0048] As Figure 4 and Figure 6 shown, the machine head 2 is provided with a first punch 26. The first punch 26 is provided with a first pressing foot 27. The first pressing foot 27 is driven by a first air cylinder 28 to move up and down. The first punch 26 is driven by a first runner 30 to rotate. The first pressing foot 27 is provided with a first guide rod 271 and a second guide rod 272. The first guide rod 271 and the second guide rod 272 guide the up and down movement of the first pressing foot 27. The first guide rod 271 is provided with a buffer spring 273. The first air cylinder 28 pushes the first pressing foot 27 to move up and down through the buffer spring 273. The machine head 2 is further provided with a second punch 29. The second punch 29 has the same design as the first punch 26. When processing a thicker sheet material 3 or a harder sheet material 3, the second punch 29 and the first punch 26 can adopt a rotating method to realize punching while rotating and moving down step by step.

[0049] As Figure 7 and Figure 8 shown, the machine head 2 is provided with a first driving motor 219. The first driving motor 219 is provided with a first screw rod 220. The first screw rod 220 matches with the first slider 221 of the frame 21. The first screw rod 220 drives the first slider 221 to move up and down, so that the frame 21 can move up and down synchronously. During the up and down movement of the frame 21, the cutter head 22, the material pressing device 1, etc. move synchronously.

[0050] Example 3:

[0051] As shown Figure 9 in FIGS. 3 and 4, the pressure plate holder 11 is provided with a first rod 111, a second rod 112 and a third rod 117. The first rod 111, the second rod 112 and the third rod 117 are circumferentially and uniformly distributed outside the tool rest 25. The machine head 2 is provided with a first mounting sleeve 222, a second mounting sleeve 223 and a third mounting sleeve 224. The first rod 111 is mounted in the first mounting sleeve 222 so that the first rod 111 can move up and down relative to the first mounting sleeve 222. The second rod 112 is mounted in the second mounting sleeve 223 so that the second rod 112 can move up and down relative to the second mounting sleeve 223. The third rod 117 is mounted in the third mounting sleeve 224 so that the third rod 117 can move up and down relative to the third mounting sleeve 224. The first rod 111, the second rod 112 and the third rod 117 are each provided with a first spring 213 and a second spring 214 respectively located at the upper and lower ends of the sleeve. The lower ends of the first rod 111, the second rod 112 and the third rod 117 are fixed to the pressure plate holder 11 by nuts, and the upper end of the first rod 111 is provided with a first adjusting member 215.

[0052] Example 4:

[0053] As shown Figure 10 in FIGS. 5 and 6 Figure 11 , the pressure plate 12 is mounted to the pressure plate holder 11 through a self-aligning ball bearing 120. The relative inclination range between the center line of the inner ring and the center line of the outer ring of the self-aligning ball bearing 120 does not exceed 3°. For the pressure plate 12 with a diameter above 80 mm, the inclination range of the pressure plate 12 should be controlled within 1.5°, and preferably can be 1°. For the pressure plate 12 with a diameter within 40 mm, a 3° inclination can be considered for the pressure plate 12. The bottom of the pressure plate 12 is conical and the cone angle is less than 5°. In this way, like a roller, it can reduce the contact area of the position where the resistance is generated in the large friction force area.

[0054] As shown Figure 10 in FIGS. 7 and 8, the pressure plate holder 11 and the machine head 2 are fixedly connected through a sliding track so that the pressure plate holder 11 can move up and down relative to the machine head 2 within a certain range. A first spring 213 and a second spring 214 are provided between the pressure plate holder 11 and the machine head 2. The first spring 213 generates an upward elastic force on the pressure plate holder 11, and the second spring 214 generates a downward elastic force on the pressure plate holder 11, so that the pressure plate holder 11 is subjected to the elastic forces of the first spring 213 and the second spring 214 when moving up and down.

[0055] Example 5:

[0056] As shown Figure 12 in FIGS. 9 and 10 Figure 13As shown in the figure, the pressure plate 12 is provided with a bottom surface 121 and a side surface 122. The side surface 122 is a conical surface, and the bottom surface 121 is an annular plane. A bearing installation hole 123 is provided at the center of the pressure plate 12. The bearing installation hole 123 is eccentrically arranged. A first inclined surface 124 is provided on one side where the bearing installation hole 123 is biased, and a second inclined surface 125 is provided on the opposite side, so that inclined upward inclined surfaces are formed on both sides of the bearing installation hole 123. The inclination angle of the first inclined surface 124 is less than 15°, and the inclination angle of the second inclined surface 125 is less than 3°. As a preference, for the pressure plate 12 with a diameter of 80 mm, the inclination angle of the first inclined surface 124 is 5°, and the inclination angle of the second inclined surface 125 is 1°. In this way, the contact area between the second inclined surface 125 and the sheet material 3 is larger, and the friction force is also larger. In front of the moving direction of the natural rotation of the first inclined surface 124 when the pressure plate 12 moves relative to the sheet material 3, the inclination angle of the first inclined surface 124 is greater than that of the second inclined surface 125. In this way, the acting area on one side in the feeding forward direction of the pressure plate 12 can be reduced, and the resistance directly in front in the forward direction can be reduced. The resistance on both sides can be used to resolve the friction force on the side with a larger resistance by rotating the angle of the pressure plate 12. Therefore, the resistance on both sides has little impact on the technical solution of the present application. The second inclined surface 125 is also provided at the rear side, so that the contact area at the rear side is also greatly reduced. In this way, the main resistance is concentrated on the left and right sides, which is exactly the advantageous acting position of the present application, that is, the acting force on the side with a larger resistance is resolved by rotation.

[0057] As Figure 12 and Figure 13 shown in the figure, sheet materials 3 such as leather have a certain elasticity. Therefore, the thickness at the position where it is acted on by the pressure plate 12 is slightly smaller, and it is in a fluffy state at the position where it is not acted on by the pressure plate 12, and will be slightly higher than the lowest position of the pressure plate 12. In this way, there will also be a certain acting force on the front surface when the pressure plate 12 moves at a high speed, which is equivalent to a large resistance when a car needs to climb a slope. Although the distance increases by using the rotation method, the resistance decreases. Just like when a car climbs a slope, it does not move straight forward, but along an oblique line. Although the distance increases, it is more labor-saving. For the freely rotatable pressure plate 12, rotation does not affect the straight-line movement of the pressure plate 12. Instead, it can move faster on the premise of reducing the resistance. Of course, in this embodiment, when the friction force is relatively balanced, the pressure plate 12 will only swing left and right within a certain range when moving forward, and will only rotate when the friction force difference between the two sides is relatively large, which has obvious advantages compared with the fixed pressure plate in the prior art. The area of the first inclined surface 124 is relatively larger on the front surface compared with an ordinary conical surface, and it is not easy to generate a concentrated acting force to cause local wrinkling, and it is more stable during the high-speed cutting process.

[0058] It should be understood that the various forms of processes shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this application can be executed in parallel, sequentially, or in a different order, as long as the desired results of the technical solution of this application can be achieved. There is no limitation herein.

[0059] In addition, the terms "first" and "second" are used only for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of this application, "a plurality" means two or more, unless otherwise specifically defined.

[0060] As described above, the above are only specific embodiments of this application, but the protection scope of this application is not limited thereto. Any person skilled in the art within the technical scope disclosed in this application can easily think of changes or substitutions, which should all be covered within the protection scope of this application. Therefore, the protection scope of this application should be subject to the protection scope of the claims.

Claims

1. A material pressing component for a cutting device, comprising a material pressing frame (11) and a material pressing plate (12), characterized in that: The pressure plate (12) is mounted on the pressure frame (11) in a manner that it can rotate relative to the pressure frame (11). The pressure frame (11) is mounted together with the frame (21) of the head (2) of the cutting device and can move along with the head (2). When the head (2) cuts the sheet material (3), the pressure plate (12) contacts the sheet material (3) and applies a certain force to make the sheet material (3) flatter. When the head (2) moves relative to the sheet material (3), the pressure plate (12) freely rotates or moves under the frictional force between it and the sheet material (3). The pressure plate (12) is provided with a bottom surface (121) and a side surface (122). The side surface (122) is a conical surface, and the bottom surface (121) is an annular plane. A bearing mounting hole (123) is provided at the center of the pressure plate (12). The bearing mounting hole (123) is eccentrically arranged. A first inclined plane (124) is provided on one side where the bearing mounting hole (123) deviates, and a second inclined plane (125) is provided on the opposite side, so that inclined upward inclined planes are formed on both sides of the bearing mounting hole (123).

2. The blank holding assembly according to claim 1, wherein: The pressure plate (12) is mounted on the pressure frame (11) through a bearing (126).

3. The blank holding component according to claim 1, characterized in that: The pressure frame (11) is provided with a first rod (111) and a second rod (112). The head (2) is provided with a first sliding hole (211) and a second sliding hole (212). The first rod (111) is mounted in the first sliding hole (211) so that the first rod (111) can move up and down relative to the first sliding hole (211). The second rod (112) is mounted in the second sliding hole (212) so that the second rod (112) can move up and down relative to the second sliding hole (212).

4. The pressure material component according to claim 1, wherein: A first spring (213) and a second spring (214) are provided between the pressure frame (11) and the head (2). The first spring (213) generates an upward elastic force on the pressure frame (11), and the second spring (214) generates a downward elastic force on the pressure frame (11), so that the pressure frame (11) is subjected to the elastic forces of the first spring (213) and the second spring (214) when moving up and down.

5. The blank holder assembly according to claim 4, characterized in that: A first adjusting member (215) and a first positioning sleeve (216) are provided between the pressure frame (11) and the head (2). The first end of the first adjusting member (215) abuts against the first spring (213) or abuts against the second spring (214). The first positioning sleeve (216) abuts against the second end of the first spring (213) and also abuts against the second end of the second spring (214). The first adjusting member (215) adjusts the position relative to the first positioning sleeve (216) to realize the adjustment of the compression amount of the first spring (213) and the second spring (214), thereby changing the position of the pressure frame (11).

6. The blank holding assembly according to claim 1, wherein: The pressure plate (12) is installed on the pressure frame (11) through a self-aligning ball bearing (120). The relative inclination range between the center line of the inner ring and the center line of the outer ring of the self-aligning ball bearing (120) does not exceed 3°. The bottom of the pressure plate (12) is a conical surface with a cone angle less than 5°.

7. Cutting device, characterized in that: The cutting device is provided with a machine head (2), and the machine head (2) is installed with the pressure component according to any one of claims 1-6.

8. The cutting device according to claim 7, wherein: The machine head (2) is provided with a first punch (26), and the first punch (26) is provided with a first pressure foot (27).

9. The cutting device according to claim 8, wherein: The machine head (2) is provided with a vibrating cutter head (22) to achieve cutting by using high-frequency vibration.

Images