Injection mold facilitating plastic recycling

Abstract

The application provides an injection mold convenient for plastic recycling, and relates to the technical field of injection molds, which comprises a lower mold core and an upper mold core arranged on opposite surfaces of a lower mold and an upper mold respectively, a feeding mechanism arranged on the upper mold and used for guiding molten plastic into a cavity, the lower mold core and the upper mold core form the cavity of a lithium battery shell, and an injection hole penetrating through the cavity is arranged on the top of the upper mold core, the feeding mechanism comprises a feeding ring arranged on the upper mold and located above the injection hole, and a control assembly arranged on the upper mold and connected with the feeding ring, and a feeding channel penetrating through the inner ring of the feeding ring and the injection hole is arranged on the upper mold in the vertical direction. The application improves the injection production efficiency, reduces the labor cost, and realizes automatic waste separation and optimized plastic recycling effect.

Description

Technical Field

[0001] This invention relates to the field of injection mold technology, specifically to an injection mold that facilitates plastic recycling. Background Technology

[0002] In the field of traditional injection molding technology, the inconvenience of plastic recycling is a common problem in injection molding production. Taking a common injection mold as an example, during the injection process, molten plastic material is injected into the mold's sprue through the injection head, and then enters the cavity formed between the upper and lower mold cores through channels such as the sprue tube. After cooling, the plastic material in the cavity forms the desired product, while the plastic material remaining at the sprue, sprue tube, and other parts forms sprue waste.

[0003] In existing technologies, after injection molding, the sprue waste and the product are often removed from the mold as a whole. Subsequently, manual separation of the sprue waste from the product and centralized recycling of the sprue waste are required. This recycling method is inefficient, especially in large-scale production scenarios, where frequent manual operations significantly reduce overall production efficiency and increase production costs.

[0004] Meanwhile, manually separating waste from the product is difficult due to the challenge of precisely controlling the operation and force, easily causing product damage and generating more waste. Furthermore, manual waste removal often fails to completely remove waste adhering to the mold's feed channel and other areas, leaving some residue. This residue not only affects the quality of subsequent injection-molded products but, if not cleaned promptly, may also mix into the new molding compound during the next injection, leading to product defects. Summary of the Invention

[0005] To address the aforementioned issues, this application provides an injection mold that facilitates plastic recycling.

[0006] To achieve the above objectives, this application provides the following technical solution: an injection mold for easy plastic recycling, comprising a lower mold core and an upper mold core respectively disposed on opposite surfaces of a lower mold and an upper mold, and a feeding mechanism disposed on the upper mold to introduce molten plastic into a cavity, wherein the lower mold core and the upper mold core form a cavity for a lithium battery casing, and an injection hole communicating with the cavity is provided on the top of the upper mold core, characterized in that the feeding mechanism comprises a feeding ring disposed on the upper mold and located above the injection hole, and a control component disposed on the upper mold and connected to the feeding ring, wherein a feeding channel communicating with the inner ring of the feeding ring and the injection hole is provided on the upper mold in a vertical direction;

[0007] During the injection molding process, the injection head of the injection molding machine abuts against the inner ring of the feed ring and injects molten rubber into the inner ring of the feed ring. The molten rubber enters the mold cavity through the inner ring of the feed ring, the feed channel and the injection hole in sequence. After the molten rubber cools, the rubber in the mold cavity forms the injection molded product, and the rubber in the inner ring of the feed ring and the feed channel forms waste.

[0008] When the injection molded product is demolded, the upper mold and the lower mold move away from each other to demold the injection molded product. The control component controls the feeding ring to rotate away from the upper mold, so that the waste material attached to the inner ring of the feeding ring and the inner wall of the feeding channel is separated from the inner wall of the feeding channel under the action of centrifugal force and friction generated by the rotation.

[0009] The control assembly includes a control tube arranged vertically and fixedly sleeved on the feed ring through the tube opening, a fixing screw ring fixedly arranged above the upper mold and sleeved on the control tube, and a control component for controlling the rotation of the control tube. The inner ring of the fixing screw ring is connected to the body of the control tube by a thread.

[0010] The control components include a rotating ring rotatably mounted on the top of the control tube, and an adjustment structure for adjusting the vertical distance between the rotating ring and the upper mold;

[0011] When the adjusting structure controls the rotating ring to move away from the upper mold, and under the action of the threaded connection between the inner ring of the fixed screw ring and the body of the control tube, it drives the control tube to rotate away from the upper mold;

[0012] The adjustment structure includes a moving rod that is horizontally positioned above the upper mold and fixedly connected to the outer ring of the rotating ring at one end; a linkage rod that is vertically positioned and connected to the lower mold at the bottom; two linkage racks that are symmetrically inserted into linkage grooves at the top of the linkage rods; and a linkage gear that is rotatably positioned in the middle of the linkage grooves and located between the two linkage racks.

[0013] Both linkage racks mesh with the linkage gear on their opposite surfaces. One linkage rack is fixedly installed in the linkage groove, and the other linkage rack is fixedly connected to the moving rod at its end.

[0014] Preferably, the inner surface of the feed ring is provided with several evenly distributed raised textures, which spiral around the inner surface of the feed ring.

[0015] As the feed rotates around its axis, the raised texture enhances the friction against the waste material adhering to the inner ring of the feed ring and the inner wall of the feed channel, making it easier for the waste material to separate from the inner wall of the feed channel.

[0016] Preferably, a feed plate is detachably installed on the top of the upper mold. The feed plate is sleeved on the feed ring through a feed hole opened on the end face and connected to a fixing screw ring.

[0017] Preferably, the symmetrical sides of the fixed screw ring are mounted on the top of the feed tray by two vertically arranged fixing rods.

[0018] The beneficial effects of this invention are:

[0019] 1. During demolding of injection-molded products, the control component controls the feed ring to move away from the upper mold and rotate around its axis. The centrifugal force and friction generated by this rotation automatically separate the waste material adhering to the inner ring of the feed ring and the inner wall of the feed channel. This method avoids the tedious process of manually cleaning waste, reduces labor costs, and lowers the possibility of contamination during cleaning, improving the purity of the waste and thus facilitating plastic recycling and increasing resource recycling efficiency.

[0020] 2. The automatic waste separation mechanism makes the demolding process smoother and faster, reduces production downtime caused by waste cleaning, improves the overall efficiency of injection molding production, and helps companies increase output to meet market demand. Attached Figure Description

[0021] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention, but do not constitute a limitation thereof. In the drawings:

[0022] Figure 1 This is a simplified structural diagram of an injection mold for easy plastic recycling proposed in this invention.

[0023] Figure 2 This is a schematic diagram of the demolding state structure of the injection mold proposed in this invention, which facilitates plastic recycling.

[0024] Figure 3 This is a schematic diagram of the cross-sectional structure of an injection mold that facilitates plastic recycling, as proposed in this invention.

[0025] Figure 4 This is a schematic diagram of the cross-sectional structure of the adjustment structure of the present invention.

[0026] Figure 5 This is a schematic diagram of the unfolded structure of the injection mold proposed in this invention for facilitating plastic recycling.

[0027] Figure 6 This is a bottom view of the unfolded structure of the injection mold for easy plastic recycling proposed in this invention.

[0028] Figure 7 This is a schematic diagram of the second adjustment structure of the present invention.

[0029] Figure 8 This is a schematic diagram of the third adjustment structure of the present invention.

[0030] Figure 9 for Figure 8 Enlarged structural diagram at point A in the middle.

[0031] In the diagram: 1. Lower template; 2. Upper template; 3. Lower mold; 4. Upper mold; 5. Feed tray; 6. Lower mold core; 7. Upper mold core; 8. Ejector hole; 9. Ejector rod; 10. Feed hole; 11. Feed ring; 12. Feed channel; 13. Fixing screw ring; 14. Rotating ring; 15. Fixing rod; 16. Telescopic rod; 17. Linkage rod; 18. Moving rod; 19. Linkage rack; 20. Linkage groove; 21. Linkage gear; 22. Lifting cylinder; 23. Slide rod; 24. Slider; 25. Control motor; 26. Control gear; 27. Driven gear; 28. Control tube. Detailed Implementation

[0032] To make the technical means, creative features, achieved objectives, and effects of this invention readily understandable, the invention is further described below with reference to specific embodiments and accompanying drawings. However, the following embodiments are merely preferred embodiments of this invention and not all embodiments. Other embodiments obtained by those skilled in the art based on the embodiments described herein without creative effort are all within the protection scope of this invention.

[0033] Given the booming development of the manufacturing industry and the continuously rising demand for plastic products, injection molding technology occupies a core position in plastic product production. However, existing injection molds present significant problems and difficulties in the plastic recycling process. After product molding, traditional injection molds rely on manual cleaning for residual waste in areas such as the feed channel. This is not only inefficient and costly, but also difficult to ensure thorough cleaning. Residual waste can negatively impact the quality of subsequent products, affecting mold precision and lifespan, and does not meet the current urgent needs for environmental protection and resource recycling.

[0034] This invention provides an injection mold that facilitates plastic recycling. By incorporating a feed ring 11, a control component, and a feed channel 12 in the upper mold 4, this mold effectively solves the problems in existing technologies. The control component can control the feed ring 11 to move away from the upper mold 4 and rotate it. The centrifugal force and friction generated by the rotation automatically separate waste material adhering to the inner ring of the feed ring and the inner wall of the feed channel, avoiding the tedious process of manual waste cleaning and reducing labor costs. Simultaneously, it reduces the possibility of contamination during waste cleaning, improves the purity of the waste, and is more conducive to plastic recycling. Furthermore, the mold has a stable structure, is easy to operate, improves production efficiency, and ensures the quality of injection molded products.

[0035] Existing mold structures such as Figure 5 and Figure 6 As shown, Figure 5 and Figure 6This is a schematic diagram of the mold in its unfolded state. From top to bottom, the mold consists of an upper template 2, an upper mold 4 with an upper mold core 7, a lower mold 3 with a lower mold core 6, and a lower template 1. The lower template 1 is equipped with an ejector rod 9, the top of which moves through the ejector hole 8 in the lower mold core 6. When the product is demolded, the ejector rod 9 moves upward to push the product away from the lower mold core 6.

[0036] Example 1: Reference Figures 1-3 and Figures 7-8 The injection mold shown is for easy plastic recycling and includes a lower mold core 6 and an upper mold core 7 respectively disposed on opposite surfaces of a lower mold 3 and an upper mold 4, and a feeding mechanism disposed on the upper mold 4 to guide molten plastic into the cavity. The lower mold core 6 and the upper mold core 7 form a cavity for the lithium battery casing, and the top of the upper mold core 7 has an injection hole that communicates with the cavity.

[0037] The feeding mechanism includes a feeding ring 11 disposed on the upper mold 4 and located above the injection hole, and a control component disposed on the upper mold 4 and connected to the feeding ring 11. The upper mold 4 has a feeding channel 12 that passes through the inner ring of the feeding ring 11 and the injection hole in the vertical direction.

[0038] During the injection molding process, the injection head of the injection molding machine abuts against the inner ring of the feed ring 11, injecting the molten rubber material into the inner ring of the feed ring 11 at a certain pressure and speed. Due to its own fluidity, the molten rubber material smoothly passes through the inner ring of the feed ring 11, the feed channel 12 on the upper mold 4, and the injection hole at the top of the upper mold core 7, ultimately entering the cavity of the formed lithium battery casing. After the molten rubber material cools, the material within the cavity forms the injection molded product, while the material within the inner ring of the feed ring 11 and the feed channel 12 forms waste material.

[0039] When the injection molded product is demolded, the upper mold 4 and the lower mold 3 move away from each other to demold the injection molded product. The control component controls the feeding ring 11 to rotate away from the upper mold 4, so that the waste material attached to the inner ring of the feeding ring 11 and the inner wall of the feeding channel 12 is separated from the inner wall of the feeding channel 12 under the action of centrifugal force and friction generated by the rotation.

[0040] In this embodiment, when the control component controls the feeding ring 11 to rotate away from the upper mold 4, the feeding ring 11 applies a force to the waste material away from the upper mold 4 on one hand, and simultaneously applies a rotational force around its axis on the waste material on the other. Under the combined action of these two forces, the waste material attached to the inner ring of the feeding ring 11 and the inner wall of the feeding channel 12 is quickly separated. The separated waste material is then separated from the mold automatically due to centrifugal force or a structure that separates the waste material from the feeding ring 11 (a cylinder can be used, where the output end of the cylinder moves to push the waste material off the feeding ring 11). Utilizing the centrifugal force and friction generated by rotation to automatically separate the waste material eliminates the need for manual cleaning, greatly shortening the waste cleaning time and significantly improving the efficiency of plastic recycling, thus meeting the needs of large-scale production.

[0041] The waste separation method driven by the feed ring 11 in this embodiment can more thoroughly separate the waste from the inner wall of the mold, reducing waste residue and avoiding impurities and pollution that may be introduced during manual cleaning. This ensures the purity of the recycled plastic, improves its performance and quality, and makes it more suitable for reuse in the production of plastic products. Compared to traditional manual waste cleaning, where operators need to use various tools and perform repetitive cleaning actions for extended periods, resulting in high labor intensity and operator fatigue, this method offers a significant advantage. Furthermore, when cleaning complex or concealed mold areas, operators may face safety risks such as cuts from sharp mold edges or accidental tool injuries.

[0042] The automatic waste separation function of this mold reduces manual operation. Operators only need to perform simple monitoring and maintenance during equipment operation, which greatly reduces labor intensity and effectively avoids safety accidents that may occur during manual cleaning, thus improving the safety of the production process.

[0043] In response to the problem that when the control component controls the feed ring 11 to rotate away from the upper mold 4 to separate the waste material, since the feed ring 11 also drives the waste material to move synchronously through friction, it is not convenient to separate the waste material when the friction between the waste material and the inner wall of the feed channel 12 is large, this embodiment provides the following solution.

[0044] The inner surface of the feed ring 11 is provided with several evenly distributed raised textures, which spiral around the inner ring of the feed ring 11.

[0045] As the feed ring 11 rotates around its axis, the raised texture enhances the friction on the waste material adhering to the inner ring of the feed ring 11 and the inner wall of the feed channel 12, making it easier for the waste material to separate from the inner wall of the feed channel 12.

[0046] In this embodiment, when the feed ring 11 rotates away from the upper mold 4 around its axis, the raised texture on the feed ring 11 directly contacts the waste material attached to the inner ring of the feed ring 11 and the inner wall of the feed channel 12. By increasing the roughness of the contact surface, the friction is significantly enhanced. During rotation, the raised texture can more effectively separate the waste material from the inner wall surface, making the waste material easier to remove, thereby greatly improving cleaning efficiency and reducing the residue of waste material inside the mold.

[0047] like Figures 1-3 As shown, a feed plate 5 is detachably installed on the top of the upper mold 4. The feed plate 5 is sleeved on the feed ring 11 through the feed hole 10 opened on the end face and is connected to the fixing screw ring 13.

[0048] In this embodiment, the feed hole 10 on the end face of the feed tray 5 is fitted with the feed ring 11. This design provides a precise channel for the material to enter the mold. In molding processes such as injection molding and die casting, molten plastic or liquid metal can flow smoothly into the mold cavity through the feed hole 10, ensuring that the material can be accurately and evenly distributed to all parts of the mold, thereby ensuring that the shape and size of the product meet the design requirements.

[0049] like Figures 1-3 As shown, the symmetrical sides of the fixing ring 13 are mounted on the top of the feed plate 5 via two vertically arranged fixing rods 15. During mold operation, the fixing ring 13 will bear significant stress, such as the pressure during injection molding and the tension during mold opening and closing. The two fixing rods 15 can distribute these stresses onto the feed plate 5, preventing stress concentration in local areas of the fixing ring 13, thereby reducing fatigue damage caused by stress concentration and improving the service life of the mold.

[0050] The control component controls the feed ring 11 to rotate away from the upper mold 4. This embodiment provides the following solution:

[0051] like Figure 1 and Figure 2 As shown, the control assembly includes a control tube 28 arranged vertically and fixedly sleeved on the feed ring 11 through the tube opening, a fixing screw ring 13 fixedly arranged above the upper mold 4 and sleeved on the control tube 28, and a control component for controlling the rotation of the control tube 28. The inner ring of the fixing screw ring 13 is connected to the tube body of the control tube 28 by a thread.

[0052] In this embodiment, during demolding, when the control tube 28 rotates around its own axis under the action of the control component, the threaded connection of the fixing ring 13 causes the control tube 28 to move away from the upper mold 4, which drives the feeding ring 11 to rotate synchronously. This rotation is the key action for separating the waste material attached to the inner ring of the feeding ring 11 and the inner wall of the feeding channel 12 under the action of centrifugal force and friction, and is an important foundation for realizing automatic waste cleaning and facilitating plastic recycling. The threaded connection between the fixing ring 13 and the control tube 28 provides stable support and guidance for the rotation of the control tube 28, ensuring that the control tube 28 will not wobble or deviate during the rotation away, thereby ensuring that the feeding ring 11 can rotate smoothly and accurately around the axis, making the waste separation process more reliable and efficient.

[0053] It is understandable that the rotation of the control tube 28 can be achieved in various ways. This embodiment provides the following solution:

[0054] like Figure 1 and Figure 2 As shown, the control components include a rotating ring 14 rotatably mounted on the top of the control tube 28, and an adjustment structure for adjusting the vertical distance between the rotating ring 14 and the upper mold 4.

[0055] When the adjusting structure controls the rotating ring 14 to move away from the upper mold 4, and under the action of the threaded connection between the inner ring of the fixing ring 13 and the body of the control tube 28, the control tube 28 is driven to rotate away from the upper mold 4.

[0056] In this embodiment, when the adjusting structure controls the rotating ring 14 to move away from the upper mold 4, the linear motion of the rotating ring 14 is converted into the rotational motion of the control tube 28 by utilizing the threaded connection between the inner ring of the fixing screw ring 13 and the tube body of the control tube 28, thereby driving the control tube 28 to rotate away from the upper mold. This linkage design provides an indirect way to control the control tube 28, making the operation more flexible and convenient, thus facilitating the separation of waste material within the feeding channel 12 and the feeding ring 11.

[0057] Example 2: Regarding the adjustment structure for the vertical distance between the rotating ring 14 and the upper mold 4, this example provides a solution for the first adjustment structure.

[0058] like Figures 1-4 As shown, the first type of adjustment structure includes a moving rod 18 that is horizontally arranged above the upper mold 4 and fixedly connected to the outer ring of the rotating ring 14 at one end, a linkage rod 17 that is arranged vertically and connected to the lower mold 3 at the bottom, two linkage racks 19 that are symmetrically arranged in the linkage grooves 20 at the top of the linkage rods 17, and a linkage gear 21 that is rotatably arranged in the middle of the linkage grooves 20 and located between the two linkage racks 19.

[0059] Both linkage racks 19 mesh with linkage gears 21 on opposite sides. One linkage rack 19 is fixedly installed in linkage groove 20, and the end of the other linkage rack 19 is fixedly connected to a moving rod 18. The bottom of the linkage rod 17 is connected to the lower mold 3 through a telescopic rod 16.

[0060] In this embodiment, the lower mold 3 has a lower template 1 at its bottom, and the upper mold 4 has an upper template 2 at its top. When the molds are opened, the upper mold 4 and the lower mold 3 are far apart. When the movable linkage rack 19 moves, it drives the linkage gear 21 to rotate. The linkage gear 21 meshes with another linkage rack 19 fixed in the linkage groove 20. According to the principle of gear transmission, the rotation of the linkage gear 21 will cause the fixed linkage rack 19 to have a relative motion tendency. However, since the fixed linkage rack 19 is fixed in the linkage groove, the linear motion of the movable linkage rack 19 is actually converted and transmitted through the rotation of the linkage gear 21. When the movable linkage rack 19 moves, it drives the moving rod 18 to move in the horizontal direction, that is, it drives the rotating ring 14 to produce displacement in the vertical direction. Since the inner ring of the fixed screw ring 13 is threadedly connected to the body of the control tube 28, as the rotating ring 14 moves away from or towards the upper mold 4, it will drive the control tube 28 to rotate and move away from or towards the upper mold 4 accordingly, realizing the linkage of the entire adjustment process.

[0061] The first adjustment structure given in this embodiment does not require the addition of an additional drive source. It can control the rotating ring 14 to move away from the upper mold 4 simply by moving the upper mold 4 and the lower mold 3 away from each other during the demolding process.

[0062] Example 3: In Example 2, the first adjustment structure uses a gear transmission structure between the upper mold 4 and the lower mold 3 to control the movement of the rotating ring 14. While separating the waste material during product demolding, the waste material separation is incomplete. This example provides a solution with a second adjustment structure.

[0063] like Figure 7 As shown, the second type of adjustment structure includes a moving rod 18 that is horizontally arranged above the upper mold 4 and one end is fixedly connected to the outer ring of the rotating ring 14, and a lifting cylinder 22 that is vertically arranged on the top of the upper mold 4, with the output end of the lifting cylinder 22 fixedly connected to the moving rod 18.

[0064] In this embodiment, when the lifting cylinder 22 moves the moving rod 18, causing a change in the vertical distance between the rotating ring 14 and the upper mold 4, the change in the position of the rotating ring 14 will cause the control tube 28 to rotate and move away from or closer to the upper mold 4, due to the threaded connection between the inner ring of the fixing screw ring 13 and the body of the control tube 28. This indirect control method allows the operator to adjust the position of the control tube 28 simply by operating the lifting cylinder 22, simplifying the operation process and improving production efficiency. Compared to the first adjustment method, although this embodiment requires the lifting cylinder 22 to control the rotating ring 14, it avoids the situation where waste material is separated while the mold is demolding the product.

[0065] Example 4: Regarding the second adjustment structure in Example 3, which uses a lifting cylinder 22 on the upper mold 4 to adjust the moving rod 18 to control the movement of the rotating ring 14, the working principle of the cylinder is to use gas pressure to drive the piston. The compressibility of gas will cause the cylinder movement to be somewhat unstable, especially during rapid start-stop or load changes, which will cause vibration, impact and other phenomena, affecting the accuracy and stability of the movement. This example provides a third adjustment structure solution.

[0066] like Figure 8 and Figure 9 As shown, the third type of adjustment structure includes two sliders 24 fixedly mounted on the side of the rotating ring 14, a slide rod 23 mounted vertically on the top of the upper mold 4 and movably passing through one of the sliders 24, and a control motor 25 mounted on the other slider 24 and whose output end drives the control tube 28 to rotate via a gear set.

[0067] The gear set includes a control gear 26 disposed on the output end of the control motor 25 and a driven gear 27 fixedly sleeved on the top of the control tube 28 rod. The driven gear 27 meshes with the control gear 26.

[0068] In this embodiment, the slide bar 23 passes through one of the sliders 24. This design provides precise guidance for the vertical movement of the rotating ring 14, ensuring that the rotating ring 14 can only move in a straight line along the axis of the slide bar 23. This avoids deviation or wobbling of the rotating ring 14 during movement, thus ensuring the accuracy of the vertical distance adjustment between the rotating ring 14 and the upper mold 4. Two sliders 24 fixed to the side of the rotating ring 14 cooperate with each other; one cooperates with the slide bar 23 for guidance, and the other is used to mount the control motor 25. This structure ensures that the rotating ring 14 experiences uniform force and smooth movement during adjustment. The control motor 25 drives the control tube to rotate through a gear set, thereby realizing the vertical movement of the rotating ring 14. The entire adjustment process is stable and reliable, and will not produce large errors due to external interference.

[0069] In this embodiment, when the control motor 25 rotates, the control gear 26 drives the driven gear 27 to rotate, thereby transmitting the rotational power of the control motor 25 to the control tube 28, thus realizing the rotation of the control tube 28. This gear transmission method has the characteristics of stable transmission ratio and high transmission efficiency, and can accurately control the rotational speed and angle of the control tube.

[0070] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. An injection mold for easy plastic recycling, comprising a lower mold core (6) and an upper mold core (7) respectively disposed on opposite surfaces of a lower mold (3) and an upper mold (4), and a feeding mechanism disposed on the upper mold (4) to introduce molten plastic into a cavity, wherein the lower mold core (6) and the upper mold core (7) form a cavity for a lithium battery casing, and the top of the upper mold core (7) has an injection hole communicating with the cavity, characterized in that, The feeding mechanism includes a feeding ring (11) disposed on the upper mold (4) and located above the injection hole, and a control component disposed on the upper mold (4) and connected to the feeding ring (11). The upper mold (4) has a feeding channel (12) that passes through the inner ring of the feeding ring (11) and the injection hole in the vertical direction. During the injection molding process, the injection head of the injection molding machine abuts against the inner ring of the feed ring (11) and injects molten rubber into the inner ring of the feed ring (11). The molten rubber enters the cavity through the inner ring of the feed ring (11), the feed channel (12) and the injection hole in sequence. After the molten rubber cools down, the rubber in the cavity forms the injection molded product, and the rubber in the inner ring of the feed ring (11) and the feed channel (12) forms waste. When the injection molded product is demolded, the upper mold (4) and the lower mold (3) move away from each other to demold the injection molded product. The control component controls the feeding ring (11) to rotate away from the upper mold (4), so that the waste material attached to the inner ring of the feeding ring (11) and the inner wall of the feeding channel (12) is separated from the inner wall of the feeding channel (12) under the action of centrifugal force and friction generated by the rotation. The control assembly includes a control tube (28) arranged vertically and fixedly sleeved on the feed ring (11) through the tube opening, a fixing screw ring (13) fixedly arranged above the upper mold (4) and sleeved on the control tube (28), and a control component for controlling the rotation of the control tube (28). The inner ring of the fixing screw ring (13) is connected to the tube body of the control tube (28) by a thread. The control components include a rotating ring (14) rotatably mounted on the top of the control tube (28) and an adjustment structure for adjusting the vertical distance between the rotating ring (14) and the upper mold (4); When the adjusting structure controls the rotating ring (14) to move away from the upper mold (4), and under the action of the threaded connection between the inner ring of the fixed screw ring (13) and the body of the control tube (28), the control tube (28) is driven to rotate away from the upper mold (4). The adjustment structure includes a moving rod (18) that is horizontally arranged above the upper mold (4) and fixedly connected to the outer ring of the rotating ring (14) at one end; a linkage rod (17) that is arranged vertically and connected to the lower mold (3) at the bottom; two linkage racks (19) that are symmetrically arranged in the linkage groove (20) at the top of the linkage rod (17); and a linkage gear (21) that is rotatably arranged in the middle of the linkage groove (20) and located between the two linkage racks (19). Both linkage racks (19) mesh with the linkage gear (21) on opposite sides. One linkage rack (19) is fixedly installed in the linkage groove (20), and the other linkage rack (19) is fixedly connected to the moving rod (18) at its end.

2. The injection mold for easy plastic recycling according to claim 1, characterized in that: The inner ring surface of the feed ring (11) is provided with several evenly distributed raised textures, which spiral around the inner ring of the feed ring (11). When the feed ring (11) rotates around its axis, the raised texture enhances the friction on the waste material attached to the inner ring of the feed ring (11) and the inner wall of the feed channel (12), making it easier for the waste material to separate from the inner wall of the feed channel (12).

3. The injection mold for easy plastic recycling according to claim 1, characterized in that: The upper mold (4) has a detachable feed plate (5) installed on its top. The feed plate (5) is fitted onto the feed ring (11) through the feed hole (10) opened on the end face and is connected to the fixing screw ring (13).

4. The injection mold for easy plastic recycling according to claim 3, characterized in that: The fixed screw ring (13) is mounted on the top of the feed tray (5) via two vertically arranged fixing rods (15) on its symmetrical sides.

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