Three-color injection mold for automobile key

Abstract

The application belongs to the technical field of injection recycling, and discloses a three-color reverse injection mold for automobile keys, which comprises a main frame, a melting and feeding mechanism, a crushing mechanism motor and an injection mold arranged on the main frame, the crushing mechanism is used for crushing waste materials, and the melting and feeding mechanism is used for melting and feeding waste materials; further comprising a crushing assembly arranged in a fixed cover on the main frame, the crushing assembly comprises a primary crushing structure and a secondary crushing structure, when the waste materials enter the fixed cover and pass through the primary crushing structure and the secondary crushing structure, the waste materials are cut off and crushed respectively. By arranging the primary crushing structure and the secondary crushing structure, the waste materials are first cut into smaller states, and then further finely crushed, so that the uniformity of the crushed material particles of different materials is improved, and the efficiency of subsequent melting of waste materials is improved.

Description

Technical Field

[0001] This invention belongs to the field of injection molding recycling technology, specifically a three-color inverted injection mold for automotive buttons. Background Technology

[0002] In the automotive interior parts manufacturing industry, especially for button components, multi-color injection molding is often used to achieve aesthetic, functional zoning, or backlighting effects. For different effects, the components have color and material differences: for example, the button base may be made of hard ABS or PC, while the touch area or sealing part may be made of soft elastomers such as TPU or TPE.

[0003] For example, Chinese patent CN104526980A discloses a three-color injection mold. Existing multi-color injection molding equipment generates mixed waste materials such as gate material and overflow material during the production process. Because these waste materials are mixed with various materials of different colors and with different physical properties (such as hard plastic and elastomer), the traditional integrated crushing and recycling method is not effective. During the mixed crushing process, hard materials are brittle and break, while soft materials are easy to entangle and string, resulting in a wide distribution of particle size and poor uniformity after crushing. Furthermore, particles of different materials stick together. Existing recycling and crushing equipment can only use a uniform crushing method, resulting in recycled materials with poor compatibility and unstable performance. They cannot be directly reused in the production of automotive parts with strict quality requirements and can usually only be downgraded or discarded, causing resource waste and environmental pressure.

[0004] Therefore, a three-color inverted injection mold for automotive buttons is proposed to solve the above problems. Summary of the Invention

[0005] To address the problems mentioned in the background section, this invention provides a three-color inverted injection mold for automotive buttons.

[0006] To achieve the above objectives, the present invention provides the following technical solution: It includes a main frame, and a melting and feeding mechanism, a crushing mechanism motor, and an injection mold disposed on the main frame. The crushing mechanism is used to crush waste material, and the melting and feeding mechanism is used to melt and feed waste material. It also includes a crushing assembly disposed within a fixed cover on the main frame. The crushing assembly includes a primary crushing structure and a secondary crushing structure. When waste material enters the fixed cover and passes through the primary crushing structure and the secondary crushing structure, the waste material is cut and crushed respectively.

[0007] In the above technical solution, preferably, the crushing assembly further includes a feed hood fixedly connected to the top of the fixed cover, and a first baffle, a fixed support, a fixed cylinder, and a separation plate located inside the fixed cover. The primary crushing structure is rotatably connected inside the first baffle. The primary crushing structure includes a drive rod, a fixed disc, and a cutting blade assembly. The secondary crushing structure is rotatably connected inside the fixed cylinder. The secondary crushing structure includes a drive rod, a crushing blade assembly, and a push block. The drive rods in both the primary and secondary crushing structures are connected to a transmission box mounted on the motor.

[0008] In the above technical solution, preferably, a movable cavity is formed between the fixed cylinder and the separation plate. A pair of fixed rods are fixedly connected to the drive rod in the secondary crushing structure. Each pair of fixed rods, at its end away from the drive rod, is rotatably connected to a pressure roller. The pressure rollers contact the inner wall of the separation plate. The push block on the crushing blade assembly contacts the inner wall of the fixed cylinder. The fixed cylinder includes an inner through hole, and the separation plate includes an outer through hole. The motor drives two vertically opposed drive rods to rotate via a transmission box of the prior art. The upper drive rod drives the cutting unit to segment and cut the waste material into blocks via a fixed disc. The waste material falls into the fixed cylinder, and the drive rod below drives the crushing blade assembly to crush the waste material inside the fixed cylinder. Because the crushing blade assembly is equipped with push blocks, on the one hand, the push blocks hit the waste material, which can assist the crushing blade assembly in crushing; on the other hand, the push blocks contact the inner wall of the fixed cylinder, and when the push blocks rotate, they can squeeze the crushed material inside the fixed cylinder through the inner through hole. The crushed material then enters the movable cavity between the fixed cylinder and the separation plate. At the same time, the drive rod below drives a pair of fixed rods, causing the pressure rollers on the fixed rods to rotate in the movable cavity. The advantage of this arrangement is that the pressure rollers are close to the outer wall of the separation plate, which can squeeze the crushed material in the movable cavity through the outer through hole.

[0009] In the above technical solution, preferably, the feeding hood, the first baffle, the fixed cylinder, and the separating plate are arranged sequentially from top to bottom. A communication opening is formed between the first baffle and the fixed cylinder. A discharge hood is fixedly connected to the bottom end of the fixed hood. The fixed support is located on the side wall of the first baffle, and a slot is provided inside the fixed support. The separating plate has a U-shaped structure, and an integral insert plate is fixedly connected to both ends of the U-shaped separating plate. A baffle is fixedly connected to the outer end of the insert plate, and a handle is fixedly connected to the outer wall of the baffle. The handle and the slot are inserted into each other. A retaining ring is fixedly connected to the inner wall of the separating plate, and the retaining ring is the same size as the separating plate. The fixing cover and the fixed support have slots adapted to the size of the separating plate. When the separating plate is inserted into the slots and fixed, the baffle on the separating plate contacts the outer wall of the fixing cover. Operators can quickly disassemble the separating plate using a handle, improving the applicability of the equipment. Different diameter separating plates can be easily replaced according to different production needs to meet diverse processing requirements. Furthermore, the cleaning and maintenance process of the separating plate has been optimized, allowing for disassembly and assembly of the separating plate without disassembling the entire equipment.

[0010] In the above technical solution, preferably, the connection between the first baffle and the fixed cylinder is an inclined structure, and the connection between the feed hood and the first baffle is an inclined structure; the movable cavity is an annular groove, the annular groove is connected to the movable cavity through an outer through hole, and the annular groove is connected to the movable cavity through an inner through hole; the retaining ring is located in the middle of the separating plate, and when the separating plate is inserted below the fixed cylinder, the retaining ring is located between a pair of pressure rollers; and the outer wall of the fixed hood is provided with a slot adapted to the size of the separating plate, and when the separating plate is inserted into the slot and fixed, the baffle and the outer wall of the fixed hood are in contact; the first baffle is connected to the fixed cylinder through a connecting port, and a sealing plate is fixedly connected between the connecting port and the movable cavity.

[0011] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0012] 1. This invention achieves graded crushing by setting up a primary crushing structure and a secondary crushing structure. First, large pieces and easily entangled soft materials are cut off, and then they are uniformly crushed. This solves the fundamental problem of excessively wide particle size distribution and poor uniformity in the single crushing process of mixed soft and hard waste. It provides raw materials with uniform particle size for subsequent melting. This segmented crushing method solves the problem of incomplete crushing and inconsistent particle size caused by using the same crushing method for different materials in the prior art. This is conducive to improving the efficiency of subsequent melting of waste.

[0013] 2. In this invention, the pusher on the crushing blade assembly fits tightly with the inner wall of the fixed cylinder. During the crushing process, the pusher can squeeze the crushed material through the inner through hole, preventing the elastic crushed material from sticking together and accumulating and clogging in the fixed cylinder. At the same time, the close contact between the pressure roller and the inner wall of the separation plate can squeeze the crushed material in the moving cavity through the outer through hole, further preventing the crushed material from clogging.

[0014] 3. By setting up a separable separation plate, and through the cooperation of handle and slot, the operator can quickly replace the separation plate with different aperture to adapt to different production needs and meet the requirements of different particle sizes. This improves the applicability of the equipment, enables the same equipment to process different waste materials, optimizes the quality of recycled materials, and enhances the adaptability and potential recycling value of the recycling system. Attached Figure Description

[0015] Figure 1 A three-dimensional structural diagram of a three-color inverted injection mold for automotive buttons;

[0016] Figure 2 A first-view cross-sectional schematic diagram of the fracture structure of a three-color inverted injection mold for automotive buttons;

[0017] Figure 3 A second-view cross-sectional schematic diagram of the fracture structure of a three-color inverted injection mold for automotive buttons;

[0018] Figure 4 A third-view cross-sectional diagram of the broken structure of a three-color inverted injection mold for automotive buttons;

[0019] Figure 5 A schematic diagram of the crushing mechanism in the crushing structure of a three-color inverted injection mold for automotive buttons;

[0020] Figure 6 for Figure 2 Enlarged structural diagram at point A in the middle;

[0021] Figure 7 for Figure 2 Enlarged structural diagram at point B;

[0022] Figure 8 for Figure 3 Enlarged structural diagram at point C;

[0023] Figure 9 for Figure 3 Enlarged structural diagram at point D;

[0024] Figure 10 for Figure 3 Enlarged structural diagram at point E;

[0025] Figure 11 A schematic diagram of the separation plate in the crushing structure of a three-color inverted injection mold for automotive buttons.

[0026] In the picture:

[0027] 1. Main frame; 2. Melting and feeding mechanism; 3. Crushing mechanism; 4. Motor; 5. Transmission box; 6. Feed hood; 7. Fixed cover; 8. Primary crushing structure; 9. Secondary crushing structure; 10. First baffle; 11. Fixed support; 12. Fixed cylinder; 13. Separation plate; 14. Retaining ring; 15. Connecting port; 16. Movable chamber; 17. Slot; 18. Insert plate; 19. Fixed plate; 20. Cutting blade assembly; 21. Crushing blade assembly; 22. Push block; 23. External through hole; 24. Internal through hole; 25. Fixed rod; 26. Pressure roller; 27. Handle; 28. Discharge hood. Detailed Implementation

[0028] 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.

[0029] like Figures 1 to 11 As shown, the present invention provides a three-color inverted injection mold for automotive buttons, including a main frame 1, and a melting and feeding mechanism 2, a crushing mechanism 3, a motor 4, and an injection mold disposed on the main frame 1. The crushing mechanism 3 is used to crush waste materials, and the melting and feeding mechanism 2 is used to melt waste materials and feed them.

[0030] It also includes a crushing component, which is installed in a fixed cover 7 on the main frame 1. The crushing component includes a primary crushing structure 8 and a secondary crushing structure 9. When the waste material enters the fixed cover 7 and passes through the primary crushing structure 8 and the secondary crushing structure 9, the waste material is cut and crushed respectively.

[0031] The crushing assembly also includes a feed hood 6 fixedly connected to the top of the fixed cover 7, and a first baffle 10, a fixed support 11, a fixed cylinder 12, and a separation plate 13 located inside the fixed cover 7. The primary crushing structure 8 is rotatably connected inside the first baffle 10. The primary crushing structure 8 includes a drive rod, a fixed disc 19, and a cutting blade assembly 20. The secondary crushing structure 9 is rotatably connected inside the fixed cylinder 12. The secondary crushing structure 9 includes a drive rod, a crushing blade assembly 21, and a pusher block 22. The drive rods in both the primary crushing structure 8 and the secondary crushing structure 9 are connected to the transmission box 5 mounted on the motor 4.

[0032] A movable cavity 16 is formed between the fixed cylinder 12 and the separation plate 13. A pair of fixed rods 25 are fixedly connected to the drive rod in the secondary crushing structure 9. Each fixed rod 25, away from the drive rod, is rotatably connected to a pressure roller 26. The pressure rollers 26 contact the inner wall of the separation plate 13. The push block 22 on the crushing blade assembly 21 contacts the inner wall of the fixed cylinder 12. The fixed cylinder 12 includes an inner through hole 24, and the separation plate 13 includes an outer through hole 23. The pressure roller 26 is made of hard material. During use, the motor 4 drives two vertically opposed drive rods to rotate via the existing transmission box 5. The upper drive rod drives the cutting unit 20 to segment and cut the waste material into blocks via the fixed disc 19. The waste material that has undergone primary processing falls into the fixed cylinder 12. The lower drive rod drives the crushing blade assembly 20 to crush the waste material inside the fixed cylinder 12. Because the crushing blade assembly 20 is equipped with push blocks 22, on the one hand, the push blocks 22 strike the waste material, assisting the crushing blades. Group 20 is crushed. On the other hand, push block 22 contacts the inner wall of fixed cylinder 12. When push block 22 rotates, it can squeeze the crushed material in fixed cylinder 12 through inner through hole 24. The crushed material then enters the movable cavity 16 between fixed cylinder 12 and separation plate 12. The drive rod below simultaneously drives a pair of fixed rods 25, causing the pressure roller 26 on the fixed rod 25 to rotate in the movable cavity 16. The advantage of this setting is that the pressure roller 26 is close to the outer wall of separation plate 13, which can squeeze the crushed material in movable cavity 16 through outer through hole 23, thereby achieving the purpose of crushing the crushed material again. Therefore, it can prevent the problem of excessive difference in the size of crushed material particles. In addition, the holes on outer through hole 23 are set with different sizes of holes, which is conducive to squeezing the crushed material into the required size. The above structure can better crush waste materials of different materials and improve the uniformity of the size of crushed material particles by segmenting and crushing the waste material, which is conducive to the subsequent melting process.

[0033] In addition, the pressure roller 26 presses against the inner wall of the separation plate 13. If the debris gets stuck in the outer through hole 23 on the separation plate 13, as new debris continues to enter the active cavity 16, the pressure roller 26 will squeeze the new debris out through the outer through hole 23, thus squeezing out the waste material in the outer through hole 23, thereby preventing the debris from getting stuck. Correspondingly, the cooperation between the push plate 22 and the inner wall of the fixed cylinder 12 is as described above.

[0034] The feed hood 6, the first baffle 10, the fixed cylinder 12, and the separating plate 13 are arranged sequentially from top to bottom. A communication port 15 is formed between the first baffle 10 and the fixed cylinder 12. The bottom end of the fixed hood 7 is fixedly connected to a communicating discharge hood 28. The fixed bracket 11 is located on the side wall of the first baffle 10, and a slot 17 is provided inside the fixed bracket 11. The separating plate 13 has a U-shaped structure, and both ends of the U-shaped separating plate 13 are fixedly connected to an integral insert plate 18. A baffle is fixedly connected to the outer end of the insert plate 18, and a handle 27 is fixedly connected to the outer wall of the baffle. The insert plate 18 and the slot 17 are inserted and fitted together. A retaining ring 14 is fixedly connected to the inner wall of the separating plate 13. The retaining ring 14 and the separating plate 13 are the same size. Furthermore, the fixed cover 7 and the fixed bracket 11 are provided with slots 30 that are adapted to the size of the separation plate 13. When the separation plate 13 is inserted into the slot 30 and fixed, the baffle on the separation plate 13 contacts the outer wall of the fixed cover 7. The operator can use the handle 27 to quickly disassemble the separation plate 13, which improves the applicability of the equipment and allows for convenient replacement of separation plates with different apertures according to different production needs to meet diverse processing requirements. In addition, the cleaning and maintenance process of the separation plate 13 has been optimized. The disassembly and assembly of the separation plate 13 can be completed without disassembling the entire equipment, which greatly reduces maintenance costs and time loss, thereby improving the continuity of production and overall efficiency.

[0035] It should be noted that the baffle and the outer wall of the fixed cover 7 are equipped with existing technology locking structures to prevent the separation plate 13 from shifting during operation.

[0036] The connection between the first baffle 10 and the fixed cylinder 12 is an inclined structure, and the connection between the feed hood 6 and the first baffle 10 is also an inclined structure. The inclined structure facilitates the material in the feed hood 6 to enter the cavity formed by the first baffle 10, and facilitates the material to enter the fixed cylinder 12 through the cavity formed by the first baffle 10.

[0037] The movable cavity 16 is an annular groove, which is connected to the movable cavity 16 through the outer through hole 23 and the inner through hole 24. The retaining ring 14 is located in the middle of the separating plate 13. When the separating plate 13 is inserted below the fixed cylinder 12, the retaining ring 14 is located between a pair of pressure rollers 26. The function of the retaining ring 14 is to seal the aperture between the pair of pressure rollers 26, preventing the middle part from being squeezed by the pressure rollers 26 and easily becoming blocked. The retaining ring 14 is made of rubber and has a triangular cross-section. The rubber material will not affect the insertion and installation of the separating plate 13. At the same time, the triangular structure facilitates the sliding of debris on the outer wall of the retaining ring 14, further preventing debris accumulation. The first baffle 10 is connected to the fixed cylinder 12 through the connecting port 15. A sealing plate is fixedly connected between the connecting port 15 and the movable cavity 16.

[0038] In addition, alternative solutions include a sorting mechanism located between the main frame (1) and the injection mold, and at least two independent waste disposal channels located downstream of the sorting mechanism;

[0039] The sorting mechanism is used to identify the waste discharged from the mold and sort it into the corresponding waste processing channel according to at least one of its characteristics, such as color, material or origin. At least one isolation plate is provided inside the fixed cover 7 so that an isolation channel connected to the waste processing channel is formed inside the fixed cover 7. This sorting mechanism is existing technology and uses intelligent color recognition to automatically sort waste of different materials, which will not be described in detail here.

[0040] The working principle and usage process of this invention: When the injection mold is working, some of the waste material generated falls into the device through the feed hood 6. The operator can also throw the injection molded scrap into the device together. Since the connection between the feed hood 6 and the first baffle 10 is designed as an inclined structure, the waste material can smoothly roll down along the inclined surface into the cavity formed by the first baffle 10, preparing for the subsequent crushing process. It should be noted that the above process is mixed crushing, and the crushed mixture can only be used for processing workpieces with low aesthetic requirements.

[0041] If an alternative solution is adopted, namely the intelligent sorting mechanism in the existing technology, an isolation plate is set inside the fixed cover 7 to form an isolation channel connected to the waste treatment channel inside the fixed cover 7; and the melting feeding mechanism 2 is in multiple groups and connected to multiple independent channels. The crushed scrap enters the corresponding injection hole of the injection mold through different groups of melting feeding mechanisms 2, and the crushing and melting processing of different materials do not affect each other.

[0042] During operation, after the motor 4 starts, it drives two drive rods arranged vertically opposite each other to rotate through the transmission box 5. The drive rod located above drives the cutting blade assembly 20 to segment and cut the waste material into blocks through the fixed plate 19. During the rotation process, the cutting blade assembly 20 uses its blades to cut the waste material into several smaller blocks. The purpose is to initially decompose the waste material into sizes that are easy to further crush, thereby improving the crushing efficiency and effect of the entire device.

[0043] After initial crushing, the waste material falls into the fixed cylinder 12. At this time, the drive rod below drives the pressure roller 26 to rotate in the movable cavity 16 through the fixed rod 25. The pressure roller 26 is in close contact with the inner wall of the separation plate 13. When the pressure roller 26 rotates, it will squeeze the waste material fragments in the movable cavity 16. At the same time, during the rotation of the crushing blade assembly 21, the push block 22 on it contacts the inner wall of the fixed cylinder 12. During the rotation, the push block 22 applies a pushing force to the waste material fragments, assisting the crushing blade assembly 21 to complete the crushing action. The crushed fragments are squeezed out through the inner through hole 24 on the fixed cylinder 12 and enter the movable cavity 16 between the fixed cylinder 12 and the separation plate 13.

[0044] Inside the active chamber 16, the pressure roller 26 continues to extrude the scrap material. The scrap material is further crushed and extruded through the external through-hole 23 on the separation plate 13. The diameter of the external through-hole 23 is designed to be different sizes, so that the final size of the waste scrap material can be controlled according to the actual production needs to ensure that it meets the requirements of the subsequent pressing process. After multiple crushing and extrusion processes, the waste scrap material finally falls onto the discharge hood 28. The discharge hood 28 is connected to the feed port of the melting feeding mechanism 2. The scrap material is then transported to the melting feeding mechanism 2 and reintroduced into the injection mold for reuse.

[0045] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0046] 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 three-color inverted injection mold for automotive buttons, characterized in that: It includes a main frame (1), a melting and feeding mechanism (2), a crushing mechanism (3), a motor (4) and an injection mold, all mounted on the main frame (1). The crushing mechanism (3) is used to crush waste materials, and the melting and feeding mechanism (2) is used to melt waste materials and feed them. It also includes a crushing component, which is set in a fixed cover (7) on the main frame (1). The crushing component includes a primary crushing structure (8) and a secondary crushing structure (9). When the waste enters the fixed cover (7) and passes through the primary crushing structure (8) and the secondary crushing structure (9), the waste is cut and crushed respectively. The crushing assembly also includes a feed hood (6) fixedly connected to the top of the fixed cover (7), and a first baffle (10), a fixed support (11), a fixed cylinder (12), and a separation plate (13) located inside the fixed cover (7); the primary crushing structure (8) is rotatably connected inside the first baffle (10), the primary crushing structure (8) includes a drive rod, a fixed disk (19), and a cutting blade assembly (20); the secondary crushing structure (9) is rotatably connected inside the fixed cylinder (12), the secondary crushing structure (9) includes a drive rod, a crushing blade assembly (21), and a pusher (22); the drive rods in the primary crushing structure (8) and the secondary crushing structure (9) are both connected to the transmission box (5) on the motor (4); A movable cavity (16) is formed between the fixed cylinder (12) and the separation plate (13). A pair of fixed rods (25) are fixedly connected to the drive rod in the secondary crushing structure (9). A pressure wheel (26) is rotatably connected to the end of the pair of fixed rods (25) away from the drive rod. The pressure wheel (26) contacts the inner wall of the separation plate (13) respectively. The push block (22) on the crusher assembly (21) is in contact with the inner wall of the fixed cylinder (12), and the fixed cylinder (12) includes an inner through hole (24), and the separation plate (13) includes an outer through hole (23). The feed hood (6), the first baffle (10), the fixed cylinder (12), and the separation plate (13) are arranged sequentially from top to bottom. A communication port (15) is formed between the first baffle (10) and the fixed cylinder (12). The bottom end of the fixed hood (7) is fixedly connected to a connected discharge hood (28). The fixed support (11) is located on the side wall of the first baffle (10). A slot (17) is opened in the fixed support (11). The separation plate (13) is a U-shaped structure. Both ends of the U-shaped separation plate (13) are fixedly connected to an integral insert plate (18). A baffle is fixedly connected to the outer end of the insert plate (18). A handle (27) is fixedly connected to the outer wall of the baffle. The handle (27) and the slot (17) are inserted into each other. A retaining ring (14) is fixedly connected to the inner wall of the separation plate (13). The retaining ring (14) and the separation plate (13) are the same size. The first baffle ( 10) The connection between the fixed cylinder (12) and the feed hood (6) and the first baffle (10) is an inclined structure; the movable cavity (16) is an annular groove, the annular groove is connected to the movable cavity (16) through the outer through hole (23), the annular groove is connected to the movable cavity (16) through the inner through hole (24), the retaining ring (14) is located in the middle of the separating plate (13), when the separating plate (13) is inserted below the fixed cylinder (12), the retaining ring (14) is located between a pair of pressure rollers (26), and the outer wall of the fixed cover (7) is provided with a slot adapted to the size of the separating plate (13). When the separating plate (13) is inserted into the slot and fixed, the baffle and the outer wall of the fixed cover (7) are in contact; the first baffle (10) is connected to the fixed cylinder (12) through the connecting port (15), and a sealing plate is fixedly connected between the connecting port (15) and the movable cavity (16); After initial crushing, the waste material falls into the fixed cylinder (12). At this time, the drive rod below drives the pressure roller (26) to rotate in the movable chamber (16) through the fixed rod (25). The pressure roller (26) is in close contact with the inner wall of the separation plate (13). When the pressure roller (26) rotates, it will exert a squeezing effect on the waste material fragments in the movable chamber (16). At the same time, during the rotation of the crushing blade assembly (21), the push block (22) on it contacts the inner wall of the fixed cylinder (12). During the rotation of the push block (22)... A thrust is applied to the waste fragments, and the crushing knife assembly (21) completes the crushing action. The crushed fragments are squeezed out through the inner through hole (24) on the fixed cylinder (12) and enter the movable cavity (16) between the fixed cylinder (12) and the separation plate (13). In the movable cavity (16), the pressure roller (26) continues to squeeze the fragments. The fragments are further crushed and squeezed out through the outer through hole (23) on the separation plate (13). After multiple crushing and squeezing processes, the waste fragments finally fall onto the discharge hood (28).

2. The automotive button three-color inverted injection mold according to any one of claims 1, characterized in that, It includes a sorting mechanism disposed between the main frame (1) and the injection mold, and at least two independent waste disposal channels disposed downstream of the sorting mechanism; The sorting mechanism is used to identify the waste discharged from the mold and sort it into the corresponding waste processing channel according to at least one of its characteristics, such as color, material or origin. At least one isolation plate is provided inside the fixed cover (7) so that an isolation channel connected to the waste processing channel is formed inside the fixed cover (7).

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