EPE pearl wool processing numerical control cutting machine

Abstract

The application relates to the technical field of EPE pearl wool processing and cutting, and particularly discloses a numerical control cutting machine for EPE pearl wool processing, which comprises a fixed cutting structure, an adjusting device and a pre-pressing device. The fixed cutting structure can adsorb, fix and cut the EPE pearl wool. The adjusting device is arranged at the bottom center of the fixed cutting structure. The pre-pressing device is provided in two, and is symmetrically arranged at the two moving ends of the adjusting device. The two pre-pressing devices can pre-press and fix the two ends of the top surface of the adsorbed and fixed EPE pearl wool, can prevent the EPE pearl wool from rebounding or displacing during the cutting process, and can cooperate with the adjusting device. The application can be flexibly adapted to the cutting of EPE pearl wool with different sizes and thicknesses, does not need to replace special clamps, and effectively solves the problems of the lifting or displacement of the EPE pearl wool during the cutting of the two ends of the pearl wool through the double fixed structures and the flexible pre-pressing, so that the cutting stability is ensured, and the cutting quality and precision are remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of EPE pearl cotton processing and cutting technology, specifically to a CNC cutting machine for EPE pearl cotton processing. Background Technology

[0002] Existing CNC cutting machines have poor versatility and are difficult to adapt to the processing needs of different specifications of EPE pearl cotton. Because EPE pearl cotton products have various sizes and thicknesses, the fixing mechanisms of existing equipment are mostly designed with special clamps with fixed parameters such as spacing and clamping depth, which cannot be flexibly adjusted according to the width and thickness of the pearl cotton. When processing pearl cotton of different specifications, it is necessary to frequently change the corresponding special clamps, which is not only cumbersome and time-consuming, but also greatly reduces production efficiency.

[0003] Existing equipment does not provide adequate fixation for EPE foam, severely impacting cutting accuracy and processing quality. EPE foam itself is soft and highly elastic, making it prone to rebound deformation. Most existing CNC cutting machines use a single vacuum adsorption fixation method, which only achieves preliminary overall positioning of the foam and fails to effectively constrain its edges or ends. During CNC cutting, the foam is susceptible to edge lifting, localized rebound, or overall displacement due to cutting force, causing the cutting trajectory to deviate from preset data, significantly reducing cutting accuracy, and resulting in uneven cuts and excessive dimensional deviations. This not only lowers the product yield but also wastes raw materials. Furthermore, while some equipment incorporates a pre-compression structure, it often uses a rigid pressing method, which can easily cause compression damage to the soft EPE foam, compressing its original properties and further affecting product quality. Summary of the Invention

[0004] The purpose of this invention is to provide a CNC cutting machine for processing EPE pearl cotton, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: comprising a fixed cutting structure, an adjusting device, and a pre-compression device. The fixed cutting structure is capable of adsorbing, fixing, and cutting EPE pearl cotton. The adjusting device is located at the center of the bottom top surface of the fixed cutting structure. Two pre-compression devices are symmetrically arranged at the two moving ends of the adjusting device. The two pre-compression devices can pre-compress and fix the two ends of the top surface of the adsorbed and fixed EPE pearl cotton, and can prevent the EPE pearl cotton from rebounding or shifting during the cutting process. The pre-compression devices can cooperate with the adjusting device and are suitable for pre-compressing and fixing the two ends of EPE pearl cotton of different thicknesses and widths.

[0006] Preferably, in order to perform data cutting on EPE pearl cotton, the fixed cutting structure includes: a support platform, a vacuum adsorption platform, and a three-axis cutting frame. The support platform is used to support the top surface connecting component; the vacuum adsorption platform is disposed on the top surface of the support platform; and the three-axis cutting frame is disposed on the left and right ends of the top surface of the support platform.

[0007] Preferably, for synchronously adjusting the spacing between the two pre-compression devices, the adjustment device includes: a rectangular block, a rectangular cavity, a rectangular groove, support pads, a synchronous drive assembly, and connecting rods. The rectangular block is positioned at the center of the top surface of the bearing platform, and the top surface of the rectangular block is a certain distance from the bottom surface of the vacuum adsorption platform. A rectangular cavity is formed inside the rectangular block, and rectangular grooves are formed at the bottom ends of both sides of the outer wall of the rectangular block. The two rectangular grooves are staggered and both extend into the rectangular cavity. Two support pads are symmetrically arranged at the bottom ends of both sides of the outer wall of the rectangular block, and the bottom surfaces of the two support pads are fixedly connected to the top surface of the bearing platform. The synchronous drive assembly is disposed in the rectangular groove, and the two output ends of the synchronous drive assembly are respectively embedded in the two rectangular grooves. Two connecting rods are symmetrically arranged at the output ends of the two synchronous drive assemblies.

[0008] Preferably, in order to drive the two connecting rods to retract or expand synchronously, the synchronous drive assembly includes: a flat brake motor, a gear, and a rack. The flat brake motor is disposed at the center of the top surface of the inner wall of the rectangular cavity; the gear is disposed at the center of the bottom surface of the inner wall of the rectangular cavity via a bearing, and the output end of the flat brake motor is connected and fixed to the center of the top surface of the gear; there are two racks, which are staggered on the outer wall of the gear, and one side of the outer wall of the two racks contacts the front and rear sides of the inner wall of the rectangular cavity. Both racks mesh with the gear, and one end of each rack is embedded in a rectangular groove and can move within the two rectangular grooves. One end of each rack is connected and fixed to one end of the outer wall of each of the two connecting rods.

[0009] Preferably, the flat brake motor can drive the gear to rotate, so that the gear drives the two racks to move within the two rectangular slots respectively, thereby driving the two connecting rods to move synchronously towards each other.

[0010] Preferably, in order to pre-compress and fix the two ends of the top surface of the EPE pearl cotton, the pre-compression device includes: a concave support rod, a long strip block, a chamber, a movable circular groove, a drive assembly, and a pressure plate. One end of the concave support rod is located at the center of the other side of the outer wall of the connecting rod; the long strip block is located at the other end of the concave support rod, and a chamber is formed inside the long strip block. Two through movable circular grooves are formed on the bottom surface of the long strip block, and the two movable circular grooves are symmetrical and both extend into the long strip block; the drive assembly is located in the chamber, and the two output ends of the drive assembly are respectively sleeved in the two movable circular grooves; the pressure plate is located at the two output ends of the drive assembly, and the top surface of the pressure plate is in contact with the bottom surface of the long strip block.

[0011] Preferably, in order to drive the two pressure plates to move downward in a limited position, the driving assembly includes: a spring, a movable long plate, a movable cylindrical block, a brake motor, and an eccentric cam. Two springs are symmetrically arranged at both ends of the top surface of the inner wall of the chamber. The movable long plate is located at the bottom ends of the two springs. Two movable cylindrical blocks are symmetrically arranged at both ends of the bottom surface of the movable long plate, with their bottom ends embedded in two movable circular grooves, allowing them to move up and down within the grooves. The bottom ends of the two movable cylindrical blocks are connected and fixed to both ends of the top surface of the pressure plates. Two brake motors are located at both ends of one side of the outer wall of the long block, near the center, with their output ends extending through one side of the outer wall into the chamber. Two eccentric cams are located at the output ends of the two brake motors, with a gap between the top surface of the inner wall of the chamber and the top surface of the movable long plate.

[0012] Preferably, the two brake motors drive the two eccentric cams to rotate, causing the two eccentric cams to rotate and press down on both ends of the top surface of the moving long plate, thereby driving the pressure plate to move downward through the transmission of the two moving cylindrical blocks.

[0013] Preferably, when the two brake motors drive the two eccentric cams to rotate and reset, the two springs pull the moving long plate and the two moving cylindrical blocks to reset the pressure plate through their own rebound.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention, through the coordinated operation of the adjustment device and the pre-compression device, can flexibly adapt to the fixed processing data cutting of EPE pearl cotton of different sizes and thicknesses; the synchronous drive component in the adjustment device can drive the two pre-compression devices to synchronously contract or expand, and precisely adjust the spacing to adapt to pearl cotton of different widths; the drive component of the pre-compression device can adjust the pressing depth of the pressure plate through the rotation stroke of the eccentric cam to adapt to pearl cotton of different thicknesses, and there is no need to replace the special clamps, which greatly improves the applicability of the equipment.

[0015] 2. The dual structure of vacuum adsorption for initial fixation and pre-compression at both ends for enhanced fixation effectively solves the problem of EPE foam being soft and prone to rebound. The vacuum adsorption platform achieves full-area initial positioning, and two symmetrical pre-compression devices precisely pre-compress both ends of the top surface of the foam, completely preventing the foam from warping, rebounding, or shifting during data cutting, providing a stable foundation for high-precision cutting. At the same time, the pre-compression adopts a flexible downward pressing method to avoid rigid impact damage to the foam, ensuring the fixation quality while protecting the material, and significantly improving the data cutting quality and accuracy of EPE foam. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the fixed cutting structure of the present invention; Figure 3 This is a schematic diagram of the position structure of the adjusting device of the present invention; Figure 4 for Figure 3 Enlarged view of point A inside; Figure 5 This is a schematic diagram of the cross-sectional structure of the rectangular block inside the adjusting device of the present invention; Figure 6 This is a schematic diagram of the internal structure of the rectangular block in the adjusting device of the present invention. Figure 7 This is a schematic diagram showing the position and structure of the pre-compression device of the present invention; Figure 8 for Figure 7 Enlarged view of point B inside; Figure 9 This is a schematic diagram of the cross-sectional structure of the long strip block inside the pre-compression device of the present invention; Figure 10 This is a schematic diagram of the internal structure of the long strip block in the pre-compression device of the present invention. Figure 11 for Figure 10 Enlarged view of point C inside.

[0017] In the diagram: 1. Fixed cutting structure; 11. Bearing platform; 12. Vacuum adsorption platform; 13. Three-axis cutting frame; 2. Adjustment device; 21. Rectangular block; 22. Rectangular cavity; 23. Rectangular groove; 24. Support plate; 25. Synchronous drive assembly; 251. Flat brake motor; 252. Gear; 253. Rack; 26. Connecting rod; 3. Pre-compression device; 31. Concave support rod; 32. Long strip block; 33. Chamber; 34. Moving circular groove; 35. Drive assembly; 351. Spring; 352. Moving long plate; 353. Moving cylindrical block; 354. Brake motor; 355. Eccentric cam; 36. Pressure plate. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Please see Figures 1-11 This invention provides a CNC cutting machine solution for processing EPE pearl cotton, comprising: a fixed cutting structure 1, an adjusting device 2, and a pre-pressing device 3. The fixed cutting structure 1 can adsorb, fix, and cut EPE pearl cotton, and also provides stable support for the adjusting device 2 and the pre-pressing device 3. The adjusting device 2 is located at the center of the bottom top surface of the fixed cutting structure 1, and can synchronously adjust the distance between the two pre-pressing devices 3. There are two pre-pressing devices 3, symmetrically arranged at the two moving ends of the adjusting device 2. The two pre-pressing devices 3 can pre-press and fix the two ends of the top surface of the adsorbed and fixed EPE pearl cotton, and can prevent the EPE pearl cotton from rebounding or shifting during the cutting process, thereby improving the fixing quality of the EPE pearl cotton and improving the cutting quality and accuracy of the fixed cutting structure 1. The pre-pressing device 3 can cooperate with the adjusting device 2 and is suitable for pre-pressing and fixing the two ends of EPE pearl cotton of different thicknesses and widths, and has a certain degree of versatility.

[0020] As a preferred option, further, such as Figure 2 As shown, the fixed cutting structure 1 includes: a support platform 11, a vacuum adsorption platform 12, and a three-axis cutting frame 13. The support platform 11 is used to support the top surface connecting component and provides stable support and mounting points for the top surface connecting component. The vacuum adsorption platform 12 is set on the top surface of the support platform 11 and can perform preliminary adsorption and fixation on the EPE pearl cotton. The three-axis cutting frame 13 is set on the left and right ends of the top surface of the support platform 11 and can perform data cutting on the EPE pearl cotton.

[0021] As a preferred option, further, such as Figure 3 , Figure 4 , Figure 5 and Figure 6As shown, the adjustment device 2 includes: a rectangular block 21, a rectangular cavity 22, a rectangular groove 23, a support plate 24, a synchronous drive assembly 25, and a connecting rod 26. The rectangular block 21 is located at the center of the top surface of the bearing platform 11, and the top surface of the rectangular block 21 is a certain distance from the bottom surface of the vacuum adsorption platform 12. A rectangular cavity 22 is formed inside the rectangular block 21, which provides installation and operating space for the synchronous drive assembly 25. Rectangular grooves 23 are formed at the bottom ends of both sides of the outer wall of the rectangular block 21, and the two rectangular grooves 23 are staggered and both of them extend into the rectangular cavity. Inside 22, two rectangular slots 23 are respectively matched with two racks 253; there are two support pads 24, which are symmetrically arranged on the bottom ends of the outer wall of the rectangular block 21, and the bottom surfaces of the two support pads 24 are fixedly connected to the top surface of the bearing platform 11. The support pads 24 are used to support the two racks 253 and the two connecting rods 26 respectively; the synchronous drive assembly 25 is arranged in the rectangular slots 23, and the two output ends of the synchronous drive assembly 25 are respectively embedded in the two rectangular slots 23; there are two connecting rods 26, which are symmetrically arranged on the output ends of the two synchronous drive assemblies 25.

[0022] As a preferred option, further, such as Figure 5 and Figure 6 As shown, the synchronous drive assembly 25 includes: a flat brake motor 251, a gear 252, and a rack 253. The flat brake motor 251 is located at the center of the top surface of the inner wall of the rectangular cavity 22. The flat brake motor 251 is small in size and suitable for scenarios where the space of the rectangular cavity 22 is compact. Furthermore, the flat brake motor 251 has a certain self-locking capability, ensuring that the output end connection components will not loosen or shift due to external forces when stationary. The gear 252 is located at the center of the bottom surface of the inner wall of the rectangular cavity 22 via a bearing. The output end of the flat brake motor 251 is connected and fixed to the center of the top surface of the gear 252. There are two racks 253. The two racks 253 are staggered and set on the outer wall of the gear 252, and one side of the outer wall of the two racks 253 contacts the front and rear sides of the inner wall of the rectangular cavity 22. The two racks 253 mesh with the gear 252. One end of the two racks 253 is embedded in the two rectangular slots 23 respectively, and can move within the two rectangular slots 23. One end of the two racks 253 is connected and fixed to one end of the outer wall of the two connecting rods 26 respectively. The flat brake motor 251 can drive the gear 252 to rotate, so that the gear 252 drives the two racks 253 to move within the two rectangular slots 23 respectively, thereby driving the two connecting rods 26 to move synchronously towards each other.

[0023] When it is necessary to adjust the distance between the two preload devices 3, the flat brake motor 251 is started, and the motor output drives the gear 252 to rotate clockwise or counterclockwise around its own axis. Since the two racks 253 are in a misaligned meshing state with the gear 252, and the racks 253 are doubly limited by the inner wall of the rectangular cavity 22 and the rectangular groove 23, the rotational motion of the gear 252 will be converted into the linear motion of the two racks 253, and the motion directions of the two racks 253 are always opposite. When the gear 252 rotates clockwise, the two racks 253 move synchronously towards each other (contracting towards each other), causing the distance between the two connecting rods 26 and the preload device 3 to decrease. When the gear 252 rotates counterclockwise, the two racks 253 move synchronously away from each other (expanding in opposite directions), causing the distance between the two connecting rods 26 and the preload device 3 to increase.

[0024] The synchronous drive component 25 realizes the function of single power input and dual reverse synchronous output. Its adjustment process has the advantages of high synchronization, accurate movement and convenient operation. It can complete the pre-compression spacing adjustment corresponding to different widths of EPE pearl cotton without manual intervention. Combined with the flexible pre-compression function of the pre-compression device 3, it further improves the adaptability of the equipment to different specifications of pearl cotton, avoids the cumbersome operation of frequently changing fixtures in traditional equipment, and significantly improves production efficiency.

[0025] As a preferred option, further, such as Figure 7 , Figure 8 , Figure 9 , Figure 10 and Figure 11 As shown, the pre-compression device 3 includes: a concave support rod 31, a long strip 32, a chamber 33, a movable circular groove 34, a drive assembly 35, and a pressure plate 36. One end of the concave support rod 31 is located at the center of the other side of the outer wall of the connecting rod 26. The concave support rod 31 is an important support for the pre-compression device 3, and the material of the concave support rod 31 has a certain degree of hardness to ensure that it will not deform due to the weight of the top connecting component. The long strip 32 is located at the other end of the concave support rod 31, and a chamber 33 is formed inside the long strip 32. The chamber 33 is used to provide installation space for the drive assembly 35. The long strip 32 has two through-hole movable circular grooves 34 on its bottom surface, and the two movable circular grooves 34 are symmetrical and both extend into the long strip 32. The drive assembly 35 is set in the chamber 33, and the two output ends of the drive assembly 35 are respectively sleeved in the two movable circular grooves 34. The pressure plate 36 is set at the two output ends of the drive assembly 35, and the top surface of the pressure plate 36 is in contact with the bottom surface of the long strip 32. The pressure plate 36 is used to pre-press and fix the EPE pearl cotton, and the plane of the pressure plate 36 fits the top contour of the EPE pearl cotton.

[0026] As a preferred option, further, such as Figure 9 , Figure 10 and Figure 11 As shown, the drive assembly 35 includes: a spring 351, a movable long plate 352, a movable cylindrical block 353, a brake motor 354, and an eccentric cam 355. Two springs 351 are symmetrically arranged at both ends of the top surface of the inner wall of the chamber 33, and are used to reset the pressure plate 36. The movable long plate 352 is located at the bottom ends of the two springs 351. Two movable cylindrical blocks 353 are symmetrically arranged at both ends of the bottom surface of the movable long plate 352, with the bottom ends of the two movable cylindrical blocks 353 respectively embedded in two movable circular grooves 34. The two cylindrical blocks 353 are respectively able to move up and down within the two movable circular grooves 34, and the bottom ends of the two movable cylindrical blocks 353 are respectively connected and fixed to the top ends of the pressure plate 36; there are two brake motors 354, which are respectively set at both ends of one side of the outer wall of the long strip block 32 near the center, and the output ends of the brake motors 354 extend through one side of the outer wall of the long strip block 32 into the cavity 33. The two brake motors 354 have a certain self-locking capability; there are two eccentric cams 355, which are respectively set at the output ends of the two brake motors 354, and the two eccentric cams 355 are located on the inner wall of the cavity 33. There is a gap between the top surface of the movable long plate 352 and the top surface of the eccentric cam 355. A combination of double eccentric cams 355 and double brake motors 354 is used for driving. The rotational arc of the eccentric cams 355 drives the movable long plate 352 downwards. The stroke characteristics of the eccentric motion of the cams create a flexible buffer, preventing the pressure plate 36 from causing rigid impact on the EPE foam, thus achieving stable fixation of the top of the EPE foam. The two brake motors 354 drive the two eccentric cams 355 to rotate, causing the two eccentric cams 355 to rotate and press down on both ends of the top surface of the movable long plate 352, thereby... The pressure plate 36 is driven downward by the transmission of two movable cylindrical blocks 353; when the two brake motors 354 drive the two eccentric cams 355 to rotate and reset, and the two springs 351 pull the movable long plate 352 and the two movable cylindrical blocks 353 to reset the pressure plate 36 through their own rebound, this drive assembly 35 adopts a combination structure of dual motors, dual eccentric cams 355 and springs 351 reset, driving the pressure plate 36 to press down flexibly, which has the advantages of buffering against rigid impact, self-locking and precise positioning and efficient reset, and can realize the stable and reliable pre-pressing and fixing of EPE pearl cotton.

[0027] When it is necessary to pre-compress and fix the EPE pearl cotton, two brake motors 354 are started simultaneously. The output end of the brake motor 354 drives the eccentric cam 355 to rotate around the output shaft. As the eccentric cam 355 rotates, its eccentric end gradually approaches and presses down on both ends of the top surface of the moving plate 352. Under the action of pressure, the moving plate 352 overcomes the elastic force of the spring 351 and moves downward in the vertical direction. The downward movement of the moving plate 352 is transmitted to the pressure plate 36 through two moving cylindrical blocks 353, which drives the pressure plate 36 to move smoothly downward along the limiting direction of the moving circular groove 34 until the pressure plate 36 is tightly attached to both ends of the top surface of the EPE pearl cotton and the preset pre-pressure is applied.

[0028] Because the pressure application process of the eccentric cam 355 is gradual rather than instantaneous rigid pressure, and the synchronous pressure application of the dual cams ensures that the pressure plate 36 is subjected to uniform force, it effectively avoids squeezing damage to the EPE pearl cotton; at the same time, the self-locking function of the brake motor 354 locks the output shaft after the pressure plate 36 reaches the preset position, so that the pressure plate 36 maintains a stable pre-pressurized state, preventing the pearl cotton from rebounding, lifting or displacing during the cutting process.

[0029] After the EPE pearl cotton is cut, the two brake motors 354 are controlled to rotate in opposite directions, driving the eccentric cam 355 to reset to the initial position. The eccentric cam 355 separates from the top surface of the moving plate 352, releasing the downward pressure constraint on the moving plate 352. At this time, the two springs 351 extend upward under their own elastic rebound, pulling the moving plate 352 to move upward in the vertical direction. The moving plate 352 drives the pressure plate 36 to reset upward synchronously through the moving cylindrical block 353 until the pressure plate 36 returns to the initial position, completing one pre-pressure reset cycle.

[0030] The drive assembly 35 features a flexible pressing characteristic, utilizing the progressive pressure of the eccentric cam 355 to avoid rigid impact and protect the original performance of the EPE pearl cotton. The self-locking function of the brake motor 354 achieves stable locking of the pre-compression depth, ensuring a secure fixation effect. The elastic rebound of the spring 351 quickly completes the component reset, improving the equipment's operating efficiency. The drive assembly 35, in conjunction with the adjustment device 2, can flexibly adjust the pressing depth of the pressure plate 36 according to different thicknesses of EPE pearl cotton, adapting to multiple specifications of materials without replacing any parts, further enhancing the equipment's versatility and practicality.

[0031] Its detailed connection methods are well-known technologies in this field. The following mainly introduces the working principle and process, and the specific work is as follows: The EPE pearl cotton to be processed is placed stably on the vacuum adsorption platform 12 on the top surface of the bearing platform 11 in the fixed cutting structure 1 through a conveying mechanism such as a robotic arm; at this time, the vacuum adsorption platform 12 starts the adsorption function and uses negative pressure to perform preliminary positioning of the EPE pearl cotton in the whole area, so as to avoid the pearl cotton from initial displacement during subsequent adjustment and pre-compression. Meanwhile, the bearing platform 11 is the top component of the entire equipment. Based on the width of the EPE pearl cotton to be processed, the adjustment device 2 activates the spacing adjustment function, which operates as follows: When the flat brake motor 251 in the synchronous drive assembly 25 is powered on, its output end drives the gear 252 installed in the rectangular cavity 22 to rotate. The gear 252 meshes with two staggered racks 253. The rotating gear 252 drives the two racks 253 to move synchronously in opposite directions or in opposite directions in the rectangular slots 23 on both sides of the rectangular block 21. The two racks 253 are fixedly connected to the two connecting rods 26, thereby driving the two connecting rods 26 to contract or expand synchronously. Finally, the two pre-compression devices 3 symmetrically installed on the connecting rods 26 are moved, so that the two pre-compression devices 3 are precisely aligned with the two ends of the top surface of the EPE pearl cotton. After the adjustment device 2 completes the spacing adaptation, the pre-compression device 3 starts the pre-compression function to reinforce and fix the two ends of the top surface of the EPE pearl cotton. The specific operation is as follows: The drive component 35 inside the long strip 32 in the pre-compression device 3 is activated, and the two brake motors 354 drive the eccentric cams 355 at their output ends to rotate. The rotating eccentric cams 355 press down on the moving long plate 352. After being pressed, the moving long plate 352 transmits pressure through the moving cylindrical blocks 353 at both ends of the bottom surface. The moving cylindrical blocks 353 drive the bottom pressure plate 36 to move smoothly downward. Finally, the pressure plate 36 fits against both ends of the top surface of the EPE pearl cotton and applies flexible pressure, forming a double fixation with the adsorption force of the vacuum adsorption platform 12, preventing the pearl cotton from rebounding, curling up or shifting during the cutting process. During the pre-compression process, the concave support rod 31 provides rigid support for the long strip block 32 and the components below, preventing deformation due to the pre-compression force. At the same time, the rotation stroke design of the eccentric cam 355 and the elastic buffering effect of the spring 351 achieve flexible pre-compression and prevent rigid impact damage to the EPE pearl cotton. After the EPE pearl cotton is fixed by both adsorption and pre-compression, the three-axis cutting frame 13 in the fixed cutting structure 1 starts the cutting operation according to the preset processing data. The three-axis cutting frame 13 can move flexibly in the X, Y and Z directions and accurately execute the cutting trajectory. The double fixing structure ensures that the EPE pearl cotton remains stable during the cutting process, effectively avoiding problems such as uneven cuts and dimensional deviations caused by material displacement. After cutting, each component is reset in sequence: The brake motor 354 in the pre-compression device 3 drives the eccentric cam 355 to rotate in the opposite direction to reset. The spring 351 uses its own rebound force to pull the moving long plate 352, the moving cylindrical block 353 and the pressure plate 36 upward to reset and release the pre-compression fixation. The vacuum adsorption platform 12 stops adsorption and releases the initial fixation. Finally, the cut EPE pearl cotton is unloaded through the conveying mechanism to complete a single processing cycle.

[0032] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A CNC cutting machine for processing EPE (Expanded Polyethylene) pearl cotton, characterized in that, include: The fixed cutting structure (1) can adsorb, fix and cut EPE pearl cotton; Adjustment device (2) is located at the center of the bottom top surface of the fixed cutting structure (1); There are two pre-compression devices (3), which are symmetrically arranged at the two moving ends of the adjustment device (2). The two pre-compression devices (3) can pre-compress and fix the top two ends of the EPE pearl cotton, and can prevent the EPE pearl cotton from rebounding or shifting during the cutting process. The pre-compression devices (3) can cooperate with the adjustment device (2) and are suitable for pre-compressing and fixing the two ends of EPE pearl cotton with different thicknesses and widths. The pre-compression device (3) includes: A concave support rod (31) is located at one end at the center of the outer wall of the connecting rod (26) of the adjusting device (2); A long strip (32) is provided at the other end of the concave support rod (31). A cavity (33) is provided inside the long strip (32). Two through movable circular grooves (34) are provided on the bottom surface of the long strip (32). The two movable circular grooves (34) are symmetrical and both of them extend into the long strip (32). A drive assembly (35) is disposed in the chamber (33), and the two output ends of the drive assembly (35) are respectively sleeved in two movable circular grooves (34); The pressure plate (36) is disposed at the two output ends of the drive assembly (35), and the top surface of the pressure plate (36) is in contact with the bottom surface of the strip block (32); The driving component (35) includes: Two springs (351) are symmetrically arranged at both ends of the top surface of the inner wall of the chamber (33); A movable long plate (352) is disposed at the bottom end of the two springs (351); Two movable cylindrical blocks (353) are symmetrically arranged at both ends of the bottom surface of the movable long plate (352). The bottom ends of the two movable cylindrical blocks (353) are respectively embedded in two movable circular grooves (34), and the two movable cylindrical blocks (353) can move up and down within the two movable circular grooves (34). The bottom ends of the two movable cylindrical blocks (353) are respectively connected and fixed to the top ends of the pressure plate (36). There are two brake motors (354), which are respectively located at both ends of the outer wall of the long strip (32) near the center, and the output end of the brake motor (354) extends through the outer wall of the long strip (32) into the chamber (33). There are two eccentric cams (355), which are respectively set at the output end of two brake motors (354), and there is a gap between the top surface of the inner wall of the two eccentric cams (355) and the top surface of the moving long plate (352); The drive assembly (35) uses the progressive pressure of the eccentric cam (355) to avoid rigid impact and protect the original performance of EPE pearl cotton. The self-locking function of the brake motor (354) is used to achieve stable locking of the pre-compression depth to ensure the fixing effect. The elastic rebound of the spring (351) quickly completes the component reset and improves the equipment operation efficiency. The drive assembly (35) works with the adjustment device (2) to flexibly adjust the pressing depth of the pressure plate (36) according to the different thicknesses of EPE pearl cotton. It can adapt to multiple specifications of materials without replacing any parts.

2. The CNC cutting machine for processing EPE pearl cotton according to claim 1, characterized in that, The fixed cutting structure (1) includes: The support platform (11) is used to support the top surface connecting components; A vacuum adsorption platform (12) is disposed on the top surface of the support platform (11); The three-axis cutting frame (13) is set at the left and right ends of the top surface of the bearing platform (11).

3. The CNC cutting machine for processing EPE pearl cotton according to claim 2, characterized in that, The regulating device (2) includes: A rectangular block (21) is set at the center of the top surface of the bearing platform (11), and the top surface of the rectangular block (21) is a certain distance from the bottom surface of the vacuum adsorption platform (12). A rectangular cavity (22) is opened inside the rectangular block (21), and rectangular grooves (23) are opened at the bottom ends of both sides of the outer wall of the rectangular block (21). The two rectangular grooves (23) are staggered and both rectangular grooves (23) penetrate into the rectangular cavity (22). There are two support pads (24), which are symmetrically arranged on the bottom ends of the outer walls of the rectangular block (21), and the bottom surfaces of the two support pads (24) are fixedly connected to the top surface of the bearing platform (11). A synchronous drive component (25) is disposed in the rectangular slot (23), and the two output ends of the synchronous drive component (25) are respectively embedded in the two rectangular slots (23); There are two connecting rods (26), which are symmetrically arranged at the output ends of the two synchronous drive components (25).

4. A CNC cutting machine for processing EPE pearl cotton according to claim 3, characterized in that, The synchronous drive component (25) includes: A flat brake motor (251) is disposed at the center of the top surface of the inner wall of the rectangular cavity (22); The gear (252) is mounted on the center of the bottom surface of the inner wall of the rectangular cavity (22) via a bearing, and the output end of the flat brake motor (251) is connected and fixed to the center of the top surface of the gear (252); Two racks (253) are staggered on the outer wall of the gear (252). One side of the outer wall of the two racks (253) contacts the front and rear sides of the inner wall of the rectangular cavity (22). Both racks (253) mesh with the gear (252). One end of each rack (253) is embedded in one of the two rectangular slots (23) and can move within the two rectangular slots (23). One end of each rack (253) is connected and fixed to one end of the outer wall of each of the two connecting rods (26).

5. A CNC cutting machine for processing EPE pearl cotton according to claim 4, characterized in that, The flat brake motor (251) can drive the gear (252) to rotate, so that the gear (252) drives the two racks (253) to move in the two rectangular slots (23) respectively, thereby driving the two connecting rods (26) to move synchronously towards each other.

6. A CNC cutting machine for processing EPE pearl cotton according to claim 5, characterized in that, The two brake motors (354) drive the two eccentric cams (355) to rotate, causing the two eccentric cams (355) to rotate and press down on the top ends of the moving long plate (352), thereby driving the pressure plate (36) to move downward through the transmission of the two moving cylindrical blocks (353).

7. A CNC cutting machine for processing EPE pearl cotton according to claim 6, characterized in that, When the two brake motors (354) drive the two eccentric cams (355) to rotate and reset, the two springs (351) pull the moving long plate (352) and the two moving cylindrical blocks (353) to drive the pressure plate (36) to reset.

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