Release film rim charge recycling, heating and melting treatment device

Abstract

The invention discloses a release film rim charge recycling, heating and melting treatment device, and relates to the technical field of waste film recycling and plastic processing. The device comprises a crushing cabin, a hot melting barrel, a static grinding disc and a movable crushing assembly located on the inner side of the crushing cabin. A shaft bracket and a main shaft seat are arranged in the crushing cabin, the driving main shaft drives the main shaft seat to rotate through a transmission bevel gear, meanwhile, the feeding paddle is driven to continuously convey materials from the guide hopper to the inner side of the static grinding disc, and the propeller shaft is driven to convey the materials in the hot melting barrel and the discharging pipe. The top end of the main shaft seat drives the movable crushing assembly to swing back and forth under the support of the sliding tray through the eccentric shaft sleeve, so that the cutting rotary blades and the rotary filing grooves in the inner side of the static grinding disc form multi-stage grinding and shearing effects; the depth of the rotary filing groove is gradually reduced in the spiral direction, the outer edge of the cutting rotary blade is in a cutting edge shape, and progressive crushing and refining of materials are achieved in combination with a file tooth structure.

Description

Technical Field

[0001] The invention relates to the technical field of waste film recycling and plastic processing, and in particular to a device for recycling, heating and melting release film scraps. Background Art

[0002] The industrial production of plastic films, composite films, and release films typically requires multiple processes, including extrusion molding, stretching and orientation, coating and lamination, die-cutting and slitting, and hot pressing. During these processes, scraps such as edge material, die-cutting scraps, or process debugging waste are inevitably generated. These scraps exhibit diverse morphological characteristics due to different production stages and process conditions. For example, during extrusion cooling and stretching and orientation, relatively stiff edge strips or curled ribbon-like scraps are easily formed; during coating and hot pressing, the scraps often develop wrinkled, stacked, or multi-layered sheet structures due to heat setting; and during the die-cutting and slitting processes, irregular particles or sheet-like scraps are also generated. It can be seen that the release film scraps generated in industrial production usually have typical forms such as particles, curled ribbons, or wrinkled, stacked sheets. Furthermore, since some processes have already undergone heat setting or multi-layer lamination, this type of scrap is generally hard, has strong bending resistance, and high toughness, making it difficult to break by simple stretching or folding.

[0003] In the existing technology, the recycling methods of waste film and scraps are mainly based on single-stage rotary cutter crushers, roller cutters or low-speed pulverizers, which initially shred the waste materials and then heat-treat them through screws or independent melting devices. However, faced with the above-mentioned granular, curled or wrinkled stacked scraps with high hardness and bending resistance, these devices show obvious limitations: First, the material shape is irregular and rigid, and it is easy to jump, accumulate or even wrap around the cutter shaft in the crushing chamber, resulting in low crushing efficiency; second, it is difficult to obtain uniform particles in single-stage cutting, which leads to uneven subsequent melting and heating, and local over-melting or incomplete melting often occurs; third, most existing recycling solutions are split-type structures for crushing and melting, and the material needs to be transported twice, which has high energy consumption and the risk of secondary pollution or blockage, making it difficult to achieve continuous processing.

[0004] In summary, existing release film scrap recycling technologies suffer from low crushing efficiency, uneven particle size, discontinuous conveying, poor melt flow, and high energy consumption when processing high-hardness, bend-resistant, granular, or curled, wrinkled, and laminated scrap formed during melt shaping or lamination. Therefore, a new technical solution is urgently needed that combines continuous feeding, multi-stage progressive crushing, and grinding and shearing for integrated melt discharge within a single device to significantly improve scrap recycling efficiency and ensure the stability of continuous production. Summary of the Invention

[0005] The present invention aims to solve one of the technical problems existing in the prior art or related technologies.

[0006] To this end, the technical solution adopted by the present invention is: a device for recycling, heating and melting release film scraps, in which a shaft frame and a main shaft seat are provided in the crushing chamber, and the driving main shaft drives the main shaft seat to rotate through the transmission bevel gear, while realizing the synchronous movement of the feed blade and the propeller shaft, and continuously conveying the material from the guide hopper to the inside of the static grinding disc; the top of the main shaft seat drives the moving crushing assembly through the eccentric shaft sleeve to realize reciprocating swing under the support of the sliding tray, so that the cutting blade and the rotary file groove of the static grinding disc form multi-stage grinding and shearing; the rotary file groove gradually decreases in depth along the spiral direction to cooperate with the blade edge structure of the outer edge of the cutting blade, gradually enhancing the material crushing effect, and finally the crushed particles are sent to the hot melt barrel for heating and melting, and then conveyed to the discharge pipe through the propeller shaft for discharge. This design effectively solves the problems of dispersed crushing and melting functions, uneven crushing particle size and discontinuous conveying in the existing technology, and realizes the integration and continuity of crushing and melting processing.

[0007] In a preferred embodiment, the device comprises a crushing chamber, a heat-melting drum, a static grinding disc, and a moving crushing assembly located within the chamber. A shaft bracket is fixed within the chamber, with a spindle seat mounted within the bracket. A drive spindle is installed on one side of the chamber. The spindle seat and the drive spindle mesh via bevel gears, ensuring stable power input. This structure efficiently transmits power from the external motor to the spindle seat within a limited space, ensuring high stability and low noise during operation.

[0008] In a preferred embodiment, the top of the spindle housing is coaxially connected to an output shaft, which extends through the moving crushing assembly and has a feed paddle fixed to its surface. The feed paddle rotates within the guide hopper, continuously feeding the scrap material into the inner side of the static grinding disc. Simultaneously, the bottom of the spindle housing drives the propeller shaft to rotate within the hot melt barrel and discharge pipe. This structure enables continuous material conveying and simultaneous crushing, significantly improving overall processing efficiency and preventing material accumulation.

[0009] In a preferred embodiment, the kinetic crushing assembly comprises a main cone and cutting vanes. An eccentric sleeve is mounted on the outside of the output shaft and fixed to the top of the main cone. A sliding plate is rotatably mounted on the outside of the eccentric sleeve and supports the bottom of the main cone. This structure enables the kinetic crushing assembly to achieve stable reciprocating oscillation during operation. The cutting vanes and the burr grooves create a continuous grinding and shearing motion, thus achieving multi-stage crushing of the material. Specifically, this design effectively increases the shear force and friction of the material within the crushing chamber, achieving uniform crushing and reducing the possibility of material entanglement.

[0010] In a preferred embodiment, the inner side of the static grinding disc is provided with spirally arranged file grooves. The inner wall of the file grooves has a multi-step structure, and the stepped corners are hardened. The top surface of the cutting blade is provided with tangentially distributed file teeth with a height of 1mm to 3mm. During the swinging process, the file teeth rub against the stepped surface of the file grooves, generating strong shear force and achieving multi-stage progressive crushing of the material. Specifically, this design not only improves crushing efficiency but also produces crushed particles of uniform size, providing stable conditions for subsequent melting.

[0011] In a preferred embodiment, the depth of the burr groove gradually decreases along the spiral direction, and the outer edge of the cutting blade is machined into a cutting edge. As the blade swings, the gap between the blade and the inner wall of the burr groove gradually decreases, creating a progressively stronger shearing and squeezing effect. Specifically, this structure allows materials to undergo a complete crushing process from coarse crushing to fine crushing and fine shearing during movement, greatly improving crushing uniformity and efficiency.

[0012] In a preferred embodiment, a heating coil or thermal oil jacket can be installed inside the hot melt barrel connected to the bottom of the crushing chamber to heat and melt the crushed material. The propeller shaft rotates at high temperature, pushing the molten material to the discharge pipe for discharge. It can be directly connected to a storage barrel, pelletizer, or mold for continuous recycling. Specifically, this design realizes the integrated operation of material crushing, conveying, and melt discharge, significantly reducing energy consumption and the need for manual intervention.

[0013] In summary, the present invention can realize continuous material transportation, shear crushing, multi-stage grinding and melt discharge in a single set of equipment through the structural coordination of the crushing chamber, hot melt barrel, static grinding disc and moving crushing components. It has the advantages of high crushing efficiency, uniform material particle size, stable transportation, low energy consumption and convenient maintenance, which significantly improves the recycling efficiency and automation level of release film edge materials.

[0014] The beneficial effects achieved by the present invention are: 1. In the present invention, the coordinated transmission between the driving spindle, the spindle seat, the feed blade and the propeller shaft is used to achieve continuous and stable transportation of materials from the guide hopper to the inner side of the static grinding disc, and the melt discharge is completed through the hot melt barrel. The entire process is continuous, stable and efficient, avoiding the problems of uneven feeding and material accumulation in traditional manual methods.

[0015] 2. In the present invention, the moving crushing assembly is driven by an eccentric shaft sleeve and swings back and forth under the support of a sliding plate, so that the cutting blades and the rotary file grooves on the inner side of the static grinding disc form a multi-stage grinding, shearing and grinding effect. Combined with the stepped structure of the rotary file grooves and the friction effect of the file teeth, the material is gradually crushed from coarse crushing to fine crushing, thereby improving the crushing efficiency and obtaining uniformly crushed particles.

[0016] 3. In the present invention, the depth of the rotary file groove gradually decreases along the spiral direction, and the outer edge of the cutting rotary blade is processed into a cutting edge shape. Combined with the propeller shaft's function of conveying molten materials at high temperature, it can achieve the superposition of four effects of shearing, conveying, grinding and crushing, and melting processing of materials in a limited space, greatly improving the equipment processing capacity and the efficiency of recycling release film edge materials, reducing energy consumption and reducing the frequency of manual intervention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present invention; Figure 2 This is a schematic diagram of the internal structure of a crushing chamber according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the transmission structure of the driving main shaft and the moving crushing assembly according to one embodiment of the present invention; Figure 4 This is a schematic diagram of the exploded structure of a motion crushing assembly according to one embodiment of the present invention; Figure 5 This is a schematic structural diagram of a static grinding disc according to an embodiment of the present invention; Figure 6 This is a schematic structural diagram of a motion crushing assembly according to an embodiment of the present invention; Figure 7 This is a schematic diagram of the internal structure of a hot melt barrel and a discharge pipe according to an embodiment of the present invention; Figure 8 A schematic diagram of the bottom structure of the crushing cabin according to an embodiment of the present invention Figure 9 This is a schematic diagram of the exploded structure of the shaft frame, main shaft seat and output shaft rod according to one embodiment of the present invention.

[0018] Reference numerals: 100, crushing chamber; 110, driving spindle; 120, shaft bracket; 130, spindle seat; 140, output shaft; 150, feed paddle; 121, sliding tray; 131, transmission bevel gear; 200, hot melt barrel; 210, discharge pipe; 220, propeller shaft; 211, heating coil; 300, static grinding disc; 310, guide hopper; 320, rotary file groove; 400, motion crushing assembly; 410, main cone seat; 420, cutting rotor; 430, eccentric sleeve; 421, file teeth. DETAILED DESCRIPTION

[0019] To make the purpose, technical solutions and advantages of the present invention more clear, the present invention is further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be noted that the embodiments of the present invention and the features therein can be combined with each other without conflict.

[0020] It is to be understood that these descriptions are illustrative only and are not intended to limit the scope of the invention.

[0021] A device for recycling, heating and melting release film scraps provided by some embodiments of the present invention will be described below with reference to the accompanying drawings.

[0022] Combine Figures 1-9 As shown, the present invention provides a release film scrap recovery, heating and melting processing device, which includes: a crushing cabin 100, a hot melt barrel 200, a static grinding disc 300 and a moving crushing assembly 400 located inside the crushing cabin 100.

[0023] A shaft bracket 120 is fixedly mounted inside the crushing chamber 100, and a main shaft seat 130 is rotatably mounted inside the bracket 120. The crushing chamber 100 is preferably welded from high-strength steel plates, and its interior can be sprayed with a wear-resistant coating to prevent wear caused by prolonged material erosion. An inspection port or transparent observation window can be installed on the side of the crushing chamber 100 to facilitate the operator's inspection of internal operating conditions during operation.

[0024] A drive shaft 110 is rotatably mounted on one side of the crushing chamber 100. Bevel gears 131 mesh with each other on the surface of the spindle seat 130 and the end of the drive shaft 110. These gears are constructed from high-hardness alloy steel and are quenched or nitrided to ensure resistance to wear during extended high-speed operation. The drive shaft 110 is connected to an external drive motor via a coupling, facilitating assembly and maintenance.

[0025] A coaxially arranged output shaft 140 is mounted on the top surface of the main shaft base 130. The top end of the output shaft 140 extends through the moving crushing assembly 400, and a feed paddle 150 is mounted on its surface. The output shaft 140 is constructed of a single piece of steel and is dynamically balanced to ensure operational stability. The feed paddle 150 utilizes a spiral propulsion mechanism, continuously and evenly pushing material downward during rotation, preventing the impact of momentary under- or overfeeding on crushing efficiency.

[0026] The bottom of the crushing chamber 100 is fixedly connected to the top of the hot melt barrel 200. The bottom of the hot melt barrel 200 is connected to a discharge pipe 210. The hot melt barrel 200 uses a double-layer insulation structure, and the inner wall can be equipped with a heating coil 211 or a thermal oil jacket to heat the crushed material to a molten or softened state. The bottom of the discharge pipe 210 can be connected to a pelletizer, mold, or collection bin via a flange or quick-connect connector, enabling flexible recycling.

[0027] A propeller shaft 220 is rotatably mounted inside the hot melt barrel 200 and the discharge pipe 210. This propeller shaft 220 is fixedly connected to the bottom end of the spindle base 130, enabling material conveying. During material conveying, the propeller shaft 220 not only propels the material but also gently stirs it at high temperatures to prevent local overheating and agglomeration.

[0028] The inner side of the static grinding disc 300 is provided with spirally arranged burr grooves 320, which are used to cooperate with the moving crushing assembly 400 to achieve multi-stage material crushing. The static grinding disc 300 is made of a single piece of cast steel or cast iron, which has high rigidity and wear resistance. Its outer surface is fixedly connected to the inner wall of the crushing chamber 100 to ensure stability during operation. Furthermore, in a preferred embodiment, by adding or removing a cushion layer at the junction between the top edge of the crushing chamber 100 and the bottom surface of the static grinding disc 300, the surface gap between the static grinding disc 300 and the moving crushing assembly 400 is changed to adjust or compensate for wear.

[0029] The moving crushing assembly 400 includes a main conical seat 410 and a cutting vane 420 fixed to the surface of the main conical seat 410. The top surface of the cutting vane 420 slides against the inside of the file groove 320, and the top surface of the cutting vane 420 is provided with file teeth 421. An eccentric sleeve 430 is rotatably sleeved on the inside of the main conical seat 410. The bottom end of the eccentric sleeve 430 is fixedly connected to the top surface of the main shaft seat 130 and sleeved on the outside of the output shaft 140, and the axis of the eccentric sleeve 430 is offset from the axis of the main shaft seat 130. The eccentric arrangement enables the reciprocating swing of the moving crushing assembly 400, so that the material is continuously sheared and ground on the inside of the static grinding disc 300. The center of the eccentric sleeve 430 is offset from the axis of the main shaft seat 130 and the output shaft 140. The eccentric distance is adapted to the movement clearance of the cutting vane 420 inside the file groove 320, and the preferred eccentric distance is 2-5 mm.

[0030] As attached Figure 9 As shown, through the rotation of the main shaft seat 130, the sleeve hole structure on its surface cooperates with the eccentric sleeve 430, so that the eccentric sleeve 430 and the main cone seat 410 swing back and forth, and the contact limitation of the cutting vane 420 on the inner side of the rotary file groove 320 is utilized to prevent the eccentric sleeve 430 and the main cone seat 410 from deflecting.

[0031] In this embodiment, a sliding plate 121 is fixedly connected to the top of the shaft frame 120. The sliding plate 121 is rotatably sleeved on the outside of the eccentric sleeve 430. The eccentric sleeve 430 is provided with a bearing located inside the sliding plate 121 to ensure smooth rotation and support. The top surface of the sliding plate 121 has a spherical concave structure, which is designed to slide against the bottom surface of the main cone seat 410, thereby achieving stable reciprocating oscillation of the moving crushing assembly 400 during eccentric rotation. This design effectively reduces lateral impact caused by eccentric rotation and prolongs the service life of the device.

[0032] An inverted tapered guide hopper 310 is fixedly mounted on the top surface of the static grinding disc 300. A feed paddle 150 is positioned inside the guide hopper 310 and rotates synchronously with the spindle base 130, continuously conveying material from the guide hopper 310 to the inside of the static grinding disc 300. This design not only ensures a continuous supply of material but also allows the paddle pitch and speed to be adjusted according to the material's characteristics, improving overall processing efficiency.

[0033] Furthermore, the inner surface of the static grinding disc 300 is tapered, with its taper parallel to the outer surface of the main conical seat 410. A certain gap is maintained between the inner surface of the static grinding disc 300 and the outer surface of the main conical seat 410, allowing material to pass through and achieve initial grinding and crushing in this area, thereby improving crushing efficiency. This gap can be fine-tuned by replacing shims of different sizes or adjusting the support structure to accommodate the crushing needs of different types of offcuts.

[0034] In this embodiment, the inner surface of the burr groove 320 is designed with a stepped structure, and each step corner is hardened. During motion, as the cutting blade 420 swings, the file teeth 421 on its top surface create friction and rub against the stepped surfaces of the burr groove 320, generating strong shear forces and achieving both primary crushing and multi-stage grinding of the material. This stepped structure not only increases the frictional contact area but also provides a temporary retardation effect during material movement, ensuring more complete crushing.

[0035] In this embodiment, the surface of the file teeth 421 is composed of several beveled edges arranged tangentially along the surface of the cutting blades 420. The raised height of these beveled edges ranges from 1 mm to 3 mm. During the reciprocating grinding process, the beveled edges contact the material surface, further enhancing the shearing and crushing effect. This size range has been repeatedly verified in experiments to ensure effective cutting force while not causing excessive resistance or impairing material flowability.

[0036] In this embodiment, the outer edge of the cutting blade 420 is machined into a cutting edge shape. This edge is designed to repeatedly contact the inner wall of the burr groove 320 on the inner side of the static grinding disc 300 during the reciprocating oscillation of the cutting blade 420, thereby achieving efficient shearing and crushing of the material. The cutting edge can be single-bevel or compound-angled to produce an effective shearing effect in different oscillation directions.

[0037] In this embodiment, the depth of the burr groove 320 gradually decreases along its spiral direction, thereby gradually reducing the gap between the inner side of the burr groove 320 and the outer edge of the cutting blade 420. This structural design gradually enhances the shearing effect, achieving a progressive process from coarse to fine crushing of the material. As the material passes through the spiral path, the shearing and extrusion forces are continuously combined, effectively improving the uniformity and fineness of the crushing.

[0038] The working principle and use process of the present invention: The basic working principle of the release film edge material recovery, heating and melting treatment device of the present invention is as follows: Power transmission and drive: The drive spindle 110 is connected to an external drive motor to realize power input; the drive spindle 110 drives the spindle seat 130 to rotate synchronously, thereby realizing the coordinated work of multiple functional modules.

[0039] Synchronous rotation and material transportation: The main shaft seat 130 drives the feed blade 150 to rotate inside the guide hopper 310, and continuously and evenly transports the material to the inside of the static grinding disc 300; the bottom end of the main shaft seat 130 simultaneously drives the propeller shaft 220 to rotate inside the hot melt barrel 200 and the discharge pipe 210, which is used to transport the crushed material to the subsequent heating and discharge process.

[0040] Crushing and Grinding: The top of the spindle seat 130 drives the moving crushing assembly 400 through the eccentric shaft sleeve 430, supported by the sliding plate 121, to achieve reciprocating swing inside the static grinding plate 300. The cutting blades 420 and the rotary file grooves 320 inside the static grinding plate 300 form a reciprocating grinding motion, crushing the material through the following multiple effects: Grinding and crushing: The stepped structure of the rotary file groove 320 rubs against the file teeth 421 on the surface of the cutting rotary blade 420 to achieve primary grinding of the material; Multi-stage crushing: The file grooves 320 are in a spiral stacked structure, and the cutting blades 420 act in sequence in the multi-stage channels to achieve layer-by-layer grinding and crushing; Progressive shearing: The depth of the burr groove 320 gradually decreases along the spiral direction, so that the gap between the outer edge of the cutting blade 420 and the inner wall of the burr groove 320 gradually decreases, thereby increasing the shearing force; Cutting edge shearing: The outer edge of the cutting blade 420 is in the shape of a cutting edge, which repeatedly contacts the inner wall of the rotary file groove 320 during the swinging process to achieve strong shearing.

[0041] Comprehensive action and final processing: Through the synergistic action of conveying, shearing, grinding, milling and multi-stage crushing, the material is gradually crushed and conveyed to the hot melt barrel 200 for heating and melting treatment, and then pushed to the discharge pipe 210 for discharge through the propeller shaft 220 in a high-temperature state. The bottom end of the discharge pipe 210 can be connected to a storage barrel, granulation equipment or a shaping mold, etc., to achieve efficient recovery and processing of the release film edge material.

[0042] Throughout this specification, terms such as "one embodiment," "some embodiments," and "specific embodiments" mean that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, illustrative uses of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0043] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. A device for recycling, heating and melting release film scraps, characterized in that: include: A crushing chamber (100), a hot melt barrel (200), a static grinding disc (300), and a moving crushing assembly (400) located inside the crushing chamber (100); a shaft frame (120) is fixedly installed inside the crushing chamber (100), and a main shaft seat (130) is rotatably installed inside the shaft frame (120); a driving main shaft (110) is rotatably installed on one side of the crushing chamber (100), and a surface of the main shaft seat (130) and an end of the driving main shaft (110) are provided with mutually meshing transmission bevel teeth (131); the main shaft seat (1 The top surface of the crushing chamber (100) is provided with a coaxially arranged output shaft (140), the top end of the output shaft (140) penetrates the moving crushing assembly (400), and the surface is provided with a feed blade (150); the bottom end of the crushing chamber (100) is fixedly connected to the top end of the hot melt barrel (200), the bottom end of the hot melt barrel (200) is connected to the discharge pipe (210), and the inner side of the hot melt barrel (200) and the discharge pipe (210) is rotatably installed with a propeller shaft (220), and the propeller shaft (220) is connected to the bottom end of the main shaft seat (130); The inner side of the static grinding disc (300) is provided with a spirally arranged rotary file groove (320); the motion crushing assembly (400) includes a main cone seat (410) and a cutting rotary blade (420) fixed to the surface of the main cone seat (410); the top surface of the cutting rotary blade (420) is in sliding contact with the inner side of the rotary file groove (320), and the top surface thereof is provided with a file tooth (421); the inner side of the main cone seat (410) is rotatably sleeved with an eccentric shaft sleeve (430), the bottom end of the eccentric shaft sleeve (430) is fixedly connected to the top surface of the main shaft seat (130) and sleeved on the outer side of the output shaft (140), and the axis of the eccentric shaft sleeve (430) deviates from the axis of the main shaft seat (130).

2. The release film scrap recovery, heating and melting treatment device according to claim 1, characterized in that: The top of the shaft frame (120) is fixedly connected to a sliding tray (121), and the sliding tray (121) is rotatably sleeved on the outside of the eccentric shaft sleeve (430). The surface of the eccentric shaft sleeve (430) is provided with a bearing located on the inside of the sliding tray (121), and the top surface of the sliding tray (121) is spherically concave and is in sliding contact with the bottom surface of the main cone seat (410).

3. The release film scrap recovery, heating and melting treatment device according to claim 1, characterized in that: An inverted conical guide hopper (310) is fixedly mounted on the top surface of the static grinding disc (300), and the feed blade (150) is located inside the guide hopper (310) and rotates to feed materials into the inside of the static grinding disc (300).

4. The release film scrap recovery, heating and melting treatment device according to claim 1, characterized in that: The inner side of the static grinding disc (300) is in the shape of an oblique cone, and the taper is parallel to the taper of the main cone seat (410). A gap is provided between the inner side of the static grinding disc (300) and the surface of the main cone seat (410) for material to pass through.

5. The release film scrap recovery, heating and melting treatment device according to claim 1, characterized in that: The inner wall surface of the rotary file groove (320) is formed into a plurality of steps, and the surface of each step angle is hardened, so as to rub against the surface of the file teeth (421) during the swinging of the cutting rotary blade (420), thereby generating a shear force to crush the material.

6. The release film scrap recovery, heating and melting treatment device according to claim 1, characterized in that: The surface of the file teeth (421) is composed of a plurality of oblique edges arranged tangentially along the surface of the cutting blade (420), and the raised height of the oblique edges is 1 mm to 3 mm.

7. The device for recycling, heating and melting release film scraps according to claim 1, characterized in that: The outer edge of the cutting vane (420) is in the shape of a cutting edge, and is used for reciprocating contact with the inner side of the rotary file groove (320) during the swinging motion of the cutting vane (420) to shear the material.

8. The release film scrap recovery, heating and melting treatment device according to claim 1, characterized in that: The depth of the rotary file groove (320) gradually decreases along its spiral direction, so that the gap between the inner side of the rotary file groove (320) and the outer edge of the cutting rotary blade (420) gradually decreases.

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