Injection mold convenient for plastic recovery

Abstract

The invention provides an injection mold convenient for plastic recovery, and relates to the technical field of injection molds, the injection mold comprises a lower mold core and an upper mold core which are respectively arranged on opposite surfaces of a lower mold and an upper mold, and a feeding mechanism which is arranged on the upper mold and is used for guiding molten plastic into a cavity, and the cavity of a lithium battery shell is formed between the lower mold core and the upper mold core; the feeding mechanism comprises a feeding ring and a control assembly, the feeding ring is arranged on the upper mold and located above the injection molding hole, the control assembly is 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 molding hole is formed in the upper mold in the vertical direction. The injection molding production efficiency is improved, the labor cost is reduced, and the effects of automatically separating waste materials and optimizing plastic recovery are achieved.

Description

Technical Field

[0001] The invention relates to the technical field of injection molds, in particular to an injection mold which is convenient for plastic recycling. Background Art

[0002] In the traditional field of injection mold technology, plastic recycling is a common problem during injection molding. For example, during the injection molding process, molten plastic is injected into the mold's inlet through the injection head. It then flows through channels such as the inlet hose into the cavity formed between the upper and lower mold cores. After cooling, the plastic in the cavity forms the desired product, while any remaining plastic in the inlet hose and other areas becomes sprue waste.

[0003] In existing technology, after injection molding, the nozzle waste and the product are often removed from the mold as a whole. This waste must then be manually separated from the product and collected for centralized recycling. 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] Furthermore, manual separation of waste from finished products can be challenging due to the difficulty in precisely controlling the required precision and force, which can easily damage the finished product and generate even more waste. Furthermore, manual waste removal can be difficult to completely remove from areas like the mold's feed channel, resulting in residual waste. This residual waste not only affects the quality of subsequent injection molded products but, if not promptly removed, can also be mixed into the new compound during the next injection molding process, causing defects. Summary of the Invention

[0005] In response to the above problems, the present application provides an injection mold that facilitates plastic recycling.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical solutions: an injection mold that is convenient for plastic recycling, comprising a lower mold core and an upper mold core respectively arranged on the opposite surfaces of the lower mold and the upper mold, and a feeding mechanism arranged on the upper mold and guiding the molten plastic into the mold cavity, the lower mold core and the upper mold core constitute the mold cavity of the lithium battery shell, and the top of the upper mold core is provided with an injection hole that passes through the mold cavity, the feeding mechanism comprises a feeding ring arranged on the upper mold and located above the injection hole, and a control component arranged on the upper mold and connected to the feeding ring, a feeding channel that passes through the inner ring of the feeding ring and the injection hole is provided on the upper mold in the vertical direction; during the injection molding process, the injection The injection head of the molding machine rests 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 turn. After the molten rubber cools down, 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. When the injection molded product is demoulded, the upper mold and the lower mold move away from each other to demould the injection molded product, and the control component controls the feed ring to rotate away from the upper mold, so that the waste attached to the inner ring of the feed ring and the inner wall of the feed channel are separated from the inner ring of the feed ring and the inner wall of the feed channel under the action of the centrifugal force and friction generated by the rotation.

[0007] Preferably, the inner surface of the feed ring is provided with a plurality of evenly distributed raised patterns, and the raised patterns spirally surround the inner surface of the feed ring; When the feed rotates around its axis, the raised patterns enhance the friction force on the waste material attached 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 ring of the feed ring and the inner wall of the feed channel.

[0008] Preferably, the control assembly includes a control tube arranged in a vertical direction and fixedly mounted on the feed ring through a pipe mouth, a fixed screw ring fixedly arranged above the upper mold and mounted on the control tube, and a control member for controlling the rotation of the control tube, and the inner ring of the fixed screw ring is connected to the body of the control tube by a thread.

[0009] Preferably, the control member includes a rotating ring rotatably arranged on the top of the control tube, and an adjusting structure for adjusting the vertical distance between the rotating ring and the upper mold; 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 tube body of the control tube, the control tube is driven to rotate away from the upper mold.

[0010] Preferably, the adjustment structure includes a moving rod horizontally arranged above the upper mold and fixedly connected to the outer ring of the rotating ring at one end, a linkage rod arranged in the vertical direction and connected to the lower mold at the bottom, two linkage racks symmetrically arranged in a linkage groove opened at the top of the linkage rod, and a linkage gear rotatably arranged in the middle of the linkage groove and located between the two linkage racks; the opposite surfaces of the two linkage racks are engaged with the linkage gears, one of the linkage racks is fixed in the linkage groove, and the end of the other linkage rack is fixedly connected to the moving rod.

[0011] Preferably, the adjustment structure includes a moving rod arranged horizontally above the upper mold and fixedly connected to the outer ring of the rotating ring at one end, and a lifting cylinder arranged vertically on the top of the upper mold, and the output end of the lifting cylinder is fixedly connected to the moving rod.

[0012] Preferably, the adjustment structure includes two sliders fixedly arranged on the side of the rotating ring, a sliding rod arranged in the vertical direction on the top of the upper mold and movable through one of the sliders, and a control motor arranged on the other slider and whose output end drives the control tube to rotate through a gear set.

[0013] Preferably, the gear set includes a control gear arranged on the output end of the control motor, and a driven gear fixedly sleeved on the top position of the control tube shaft, and the driven gear is meshed with the control gear.

[0014] Preferably, a feed tray is detachably mounted on the top of the upper mold, and the feed tray is sleeved on the feed ring through a feed hole opened on the end face and is connected to a fixed screw ring.

[0015] Preferably, the symmetrical sides of the fixed screw ring are installed on the top of the feed tray through two vertically arranged fixing rods.

[0016] Beneficial effects of the present invention: 1. When the injection molded product is demolded, the control component moves the feed ring away from the upper mold and rotates 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 manual waste cleaning, reducing labor costs, while also reducing the possibility of waste contamination during the cleaning process and improving the purity of the waste, thereby facilitating the recycling and reuse of plastics and improving the efficiency of resource recycling.

[0017] 2. The automatic waste separation mechanism makes the demoulding process smoother and faster, reduces the production downtime caused by cleaning waste, and improves the efficiency of injection molding production as a whole, helping companies increase production and meet market demand. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings: Figure 1 This is a schematic diagram of the simplified structure of the injection mold proposed by the present invention for facilitating plastic recycling.

[0019] Figure 2 This is a schematic structural diagram of the demoulding state of the injection mold proposed by the present invention for facilitating plastic recycling.

[0020] Figure 3 This is a schematic diagram of the cross-sectional structure of an injection mold that facilitates plastic recycling, as proposed by the present invention.

[0021] Figure 4 It is a schematic diagram of the cross-sectional structure of the regulating structure of the present invention.

[0022] Figure 5 This is a schematic diagram of the expanded structure of the injection mold proposed by the present invention for facilitating plastic recycling.

[0023] Figure 6 This is a schematic diagram of the expanded bottom-up structure of the injection mold for facilitating plastic recycling proposed by the present invention.

[0024] Figure 7 This is a schematic structural diagram of the second regulating structure of the present invention.

[0025] Figure 8 This is a schematic structural diagram of the third regulating structure of the present invention.

[0026] Figure 9 for Figure 8 Enlarged structural diagram at point A in the middle.

[0027] In the figure: 1. Lower template; 2. Upper template; 3. Lower mold; 4. Upper mold; 5. Feed tray; 6. Lower mold core; 7. Upper mold core; 8. Lifting hole; 9. Ejector rod; 10. Feed hole; 11. Feed ring; 12. Feed channel; 13. Fixed screw ring; 14. Rotating ring; 15. Fixed rod; 16. Telescopic rod; 17. Linkage rod; 18. Moving rod; 19. Linkage rack; 20. Linkage slot; 21. Linkage gear; 22. Lifting cylinder; 23. Sliding rod; 24. Sliding block; 25. Control motor; 26. Control gear; 27. Driven gear; 28. Control tube. DETAILED DESCRIPTION

[0028] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific embodiments and drawings. However, the following embodiments are only preferred embodiments of the present invention and are not exhaustive. Based on the embodiments in the embodiments, other embodiments obtained by those skilled in the art without creative work are all within the scope of protection of the present invention.

[0029] Given the current booming manufacturing industry and the continued rise in demand for plastic products, injection molding technology has become a core component of plastic product production. However, existing injection mold technologies present significant challenges and difficulties in the plastic recycling process. Traditional injection molds rely on manual cleaning of residual waste in areas such as the feed channel after product molding. This is not only inefficient and costly, but also difficult to ensure thorough cleaning. Residual waste can adversely affect the quality of subsequent products, affecting mold precision and service life, and is not in line with current urgent environmental protection and resource recycling needs.

[0030] The present invention provides an injection mold that facilitates plastic recycling. The mold can effectively solve the problems in the prior art by providing a feed ring 11, a control component, and a feed channel 12 on the upper mold 4. The control component can control the feed ring 11 to move away from the upper mold 4 and drive it to rotate. The centrifugal force and friction generated by the rotation automatically separate the waste attached to the inner ring of the feed ring and the inner wall of the feed channel, avoiding the tedious process of manually cleaning the waste and reducing labor costs. At the same time, the possibility of waste being contaminated during the cleaning process is reduced, the purity of the waste is improved, and it is more conducive to the recycling and reuse of plastics. In addition, the mold has a stable structure and is easy to operate, which can improve production efficiency and ensure the quality of injection molded products.

[0031] The mold structure in the prior art is as follows Figure 5 and Figure 6 As shown, Figure 5 and Figure 6 This is a structural diagram of the mold in the expanded 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 provided with a push rod 9, and the top of the push rod 9 is movable through the lifting hole 8 opened in the lower mold core 6. When the product is demolded, the push rod 9 moves upward to push the product away from the lower mold core 6.

[0032] Example 1: Reference Figure 1-Figure 3 and Figure 7-Figure 8 The injection mold shown here facilitates plastic recycling and includes a lower mold core 6 and an upper mold core 7, respectively positioned on opposing surfaces of a lower mold 3 and an upper mold 4, and a feed mechanism mounted on the upper mold 4 to direct molten plastic into the mold cavity. The cavity for the lithium battery housing is formed between the lower mold core 6 and the upper mold core 7, and an injection hole is formed at the top of the upper mold core 7, extending through the cavity.

[0033] The feeding mechanism includes a feeding ring 11 arranged on the upper mold 4 and located above the injection hole, and a control component arranged on the upper mold 4 and connected to the feeding ring 11. A feeding channel 12 is opened on the upper mold 4 in the vertical direction to pass through the inner ring of the feeding ring 11 and the injection hole.

[0034] During the injection molding process, the injection molding machine's injection head rests against the inner ring of feed ring 11, injecting molten rubber into the inner ring at a predetermined pressure and speed. Leveraging its inherent fluidity, the molten rubber flows smoothly through the inner ring of feed ring 11, feed channel 12 defined in upper mold 4, and the injection hole at the top of upper mold core 7, ultimately entering the mold cavity of the lithium battery housing. After the molten rubber cools, the material within the mold cavity forms the injection-molded product, while the material within the inner ring of feed ring 11 and feed channel 12 forms waste.

[0035] When the injection molded product is demoulded, the upper mold 4 and the lower mold 3 move away from each other to demould the injection molded product, and the control component controls the feed ring 11 to rotate away from the upper mold 4, so that the waste attached to the inner ring of the feed ring 11 and the inner wall of the feed channel 12 are separated from the inner ring of the feed ring 11 and the inner wall of the feed channel 12 under the action of the centrifugal force and friction generated by the rotation.

[0036] In this embodiment, when the control assembly causes the feed ring 11 to rotate away from the upper mold 4, the feed ring 11 simultaneously applies a force to the waste material away from the upper mold 4 and simultaneously applies a rotational force about its axis. These two forces act together to rapidly separate the waste material adhering to the inner ring of the feed ring 11 and the inner wall of the feed channel 12. The separated waste material is automatically separated from the mold by centrifugal force or by a structure designed to separate the waste from the feed ring 11 (e.g., a pneumatic cylinder, which moves the output end of the cylinder to push the waste material off the feed ring 11), thereby achieving automatic separation. This automatic separation of the waste material by utilizing the centrifugal force and friction generated by rotation eliminates the need for manual cleaning, significantly shortens waste cleaning time, and significantly improves the efficiency of plastic recycling, meeting the needs of large-scale production.

[0037] The feed ring 11 of this embodiment drives the waste separation method to more thoroughly separate the waste from the inner wall of the mold, reducing the residual waste. At the same time, it avoids impurities and pollution that may be introduced during the manual cleaning process, ensures the purity of the recycled plastic, and is conducive to improving the performance and quality of the recycled plastic so that it can be better reused in the production of plastic products. Compared with the traditional manual waste cleaning process, the operator needs to use various tools and repeat the cleaning action for a long time, which is labor-intensive and easily leads to operator fatigue. Moreover, when cleaning some complex or hidden parts of the mold, the operator may face certain safety risks, such as being scratched by the sharp edges of the mold or accidentally injured by tools.

[0038] The automatic waste separation function of this mold reduces the manual operation links. The operator only needs to perform simple monitoring and maintenance during the operation of the equipment, which greatly reduces the labor intensity. At the same time, it also effectively avoids the safety accidents that may occur during the manual cleaning process and improves the safety of the production process.

[0039] When the control component controls the feed ring 11 to rotate away from the upper mold 4 to drive the waste to be separated, since the feed ring 11 also drives the waste to move synchronously through friction, when the waste is located in the feed channel 12 and the friction between the waste and the inner wall of the feed channel 12 is large, it is inconvenient to separate the waste. This embodiment provides the following solution.

[0040] The inner surface of the feed ring 11 is provided with a plurality of evenly distributed raised patterns, and the raised patterns spirally surround the inner surface of the feed ring 11 .

[0041] When the feed ring 11 rotates around its axis, the raised patterns enhance the friction force 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 ring of the feed ring 11 and the inner wall of the feed channel 12 .

[0042] In this embodiment, as feed ring 11 rotates about its axis away from upper mold 4, the raised patterns on feed ring 11 come into direct contact with waste material adhering to the inner ring of feed ring 11 and the inner wall of feed channel 12. This increases the roughness of the contact surface, significantly enhancing friction. During rotation, the raised patterns more effectively separate waste material from the inner wall surface, making it easier to fall off, thereby significantly improving cleaning efficiency and reducing waste residue within the mold.

[0043] like Figure 1-Figure 3 As shown, a feed tray 5 is detachably mounted on the top of the upper mold 4 . The feed tray 5 is sleeved on a feed ring 11 through a feed hole 10 opened on the end surface and is connected to a fixed screw ring 13 .

[0044] In this embodiment, feed hole 10, formed on the end surface of feed tray 5, is nested with feed ring 11, providing a precise passage for material to enter the mold. During processes such as injection molding and die casting, molten plastic or metal flows smoothly into the mold cavity through feed hole 10, ensuring accurate and even distribution of the material throughout the mold, thereby ensuring that the product's shape and size meet design requirements.

[0045] like Figure 1-Figure 3 As shown, the symmetrical sides of the fixing screw ring 13 are mounted on the top of the feed tray 5 via two vertical fixing rods 15. During the operation of the mold, the fixing screw ring 13 will be subjected to large stresses, such as pressure during injection molding and tension during mold opening and closing. The two fixing rods 15 can disperse these stresses to the feed tray 5, avoiding stress concentration in a local area of the fixing screw ring 13, thereby reducing fatigue damage to the fixing screw ring 13 caused by stress concentration and improving the service life of the mold.

[0046] The control assembly controls the feed ring 11 to rotate away from the upper mold 4. This embodiment provides the following solution: like Figure 1 and Figure 2 As shown, the control assembly includes a control tube 28 arranged in a vertical direction and fixedly mounted on the feed ring 11 through a pipe mouth, a fixed screw ring 13 fixedly arranged above the upper mold 4 and mounted on the control tube 28, and a control member for controlling the rotation of the control tube 28. The inner ring of the fixed screw ring 13 is connected to the body of the control tube 28 by a thread.

[0047] During demoulding, when the control tube 28 rotates around its own axis under the action of the control member, the threaded connection of the fixed screw ring 13 causes the control tube 28 to move in a manner of rotating away from the upper mold 4, which drives the feed ring 11 to rotate synchronously. This rotation is the key action for separating the waste material attached to the inner ring of the feed ring 11 and the inner wall of the feed channel 12 under the action of centrifugal force and friction, and is an important basis for achieving automatic waste cleaning and facilitating plastic recycling. The threaded connection between the fixed screw 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 shake or deflect during the process of rotating away, thereby ensuring that the feed ring 11 can rotate around the axis smoothly and accurately, making the waste separation process more reliable and efficient.

[0048] It is understandable that the control tube 28 can be rotated in a variety of ways. This embodiment provides the following solutions: like Figure 1 and Figure 2 As shown, the control member includes a rotating ring 14 rotatably disposed on the top of the control tube 28 , and an adjusting structure for adjusting the vertical distance between the rotating ring 14 and the upper mold 4 .

[0049] When the adjusting structure controls the rotating ring 14 to move away from the upper mold 4 , the control tube 28 is driven to rotate away from the upper mold 4 under the action of the threaded connection between the inner ring of the fixed screw ring 13 and the tube body of the control tube 28 .

[0050] In this embodiment, when the adjustment mechanism controls the rotating ring 14 to move away from the upper mold 4, the threaded connection between the inner ring of the fixed screw ring 13 and the body of the control tube 28 converts the linear motion of the rotating ring 14 into the rotational motion of the control tube 28, thereby driving the control tube 28 to rotate away from the upper mold. This linkage design provides an indirect method for controlling the control tube 28, making operation more flexible and convenient, thereby facilitating the separation of waste materials within the feed channel 12 and feed ring 11.

[0051] Embodiment 2: With respect to the adjustment structure of the vertical distance between the rotating ring 14 and the upper mold 4 , this embodiment provides a solution of the first adjustment structure.

[0052] like Figure 1-Figure 4As shown, the first adjustment structure includes a moving rod 18 which 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 which is arranged in the vertical direction and connected to the lower mold 3 at the bottom, two linkage racks 19 which are symmetrically arranged in the linkage groove 20 at the top of the linkage rod 17, and a linkage gear 21 which is rotatably arranged in the middle of the linkage groove 20 and located between the two linkage racks 19.

[0053] The opposite surfaces of the two linkage racks 19 are engaged with the linkage gear 21. One of the linkage racks 19 is fixed in the linkage groove 20, and the end of the other linkage rack 19 is fixedly connected to the moving rod 18; the bottom of the linkage rod 17 is connected to the lower mold 3 through the telescopic rod 16.

[0054] In this embodiment, the lower mold 3 is provided with a lower platen 1 at the bottom, and the upper mold 4 is provided with an upper platen 2 at the top. During mold opening, the upper mold 4 and lower mold 3 move away from each other. When the movable linkage rack 19 moves, it drives the linkage gear 21 to rotate. The linkage gear 21, in turn, meshes with another linkage rack 19 fixed within the linkage groove 20. According to the principle of gear transmission, the rotation of the linkage gear 21 causes the fixed linkage rack 19 to move relative to it. However, since the fixed linkage rack 19 is fixed within the linkage groove, the rotation of the linkage gear 21 actually converts and transmits the linear motion of the movable linkage rack 19. The movement of the movable linkage rack 19 drives the movable rod 18 horizontally, which in turn drives the rotating ring 14 vertically. Because 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 toward the upper mold 4, it drives the control tube 28 to rotate and move away from or toward the upper mold 4 accordingly, achieving a coordinated adjustment process.

[0055] The first adjustment structure provided in this embodiment does not require an additional driving source, and the rotating ring 14 can be controlled 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 demoulding process.

[0056] Example 3: With respect to the first adjustment structure in Example 2, a gear transmission structure is set between the upper mold 4 and the lower mold 3 to control the movement of the rotating ring 14. The waste is separated while the product is demolded. However, there may be a problem of incomplete waste separation. This example provides a solution to the second adjustment structure.

[0057] like Figure 7 As shown, the second adjustment structure includes a moving rod 18 which is horizontally arranged above the upper mold 4 and one end of which is fixedly connected to the outer ring of the rotating ring 14, and a lifting cylinder 22 which is vertically arranged on the top of the upper mold 4, and the output end of the lifting cylinder 22 is fixedly connected to the moving rod 18.

[0058] In this embodiment, when the lifting cylinder 22 drives the moving rod 18 to move, causing the vertical distance between the rotating ring 14 and the upper mold 4 to change, due to the threaded connection between the inner ring of the fixed screw ring 13 and the body of the control tube 28, the change in the position of the rotating ring 14 will drive the control tube 28 to rotate and move away from or closer to the upper mold 4 accordingly. 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 is separated while the mold is demolding the product.

[0059] Example 4: With respect to the second adjustment structure in Example 3, a lifting cylinder 22 is provided on the upper mold 4 to adjust the movement of the moving rod 18 to control the movement of the rotating ring 14. Since the working principle of the cylinder is to use gas pressure to drive the piston to move, the compressibility of the gas will cause a certain degree of instability in the movement of the cylinder, especially during rapid start and stop or load changes, vibration, impact and other phenomena will occur, affecting the accuracy and stability of the movement. This embodiment provides a solution to the third adjustment structure.

[0060] like Figure 8 and Figure 9 As shown, the third adjustment structure includes two sliders 24 fixedly arranged on the side of the rotating ring 14, a slide rod 23 arranged on the top of the upper mold 4 in the vertical direction and movable through one of the sliders 24, and a control motor 25 arranged on the other slider 24 and the output end of which drives the control tube 28 to rotate through a gear set.

[0061] The gear set includes a control gear 26 provided on the output end of the control motor 25 and a driven gear 27 fixedly sleeved on the top position of the control tube 28 , and the driven gear 27 is meshed with the control gear 26 .

[0062] In this embodiment, the slide rod 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 linearly along the axis of the slide rod 23, avoiding deviation or shaking of the rotating ring 14 during movement, thereby ensuring the accuracy of the vertical distance adjustment between the rotating ring 14 and the upper mold 4. Two of the sliders 24 fixed to the side of the rotating ring 14 cooperate with each other, one cooperates with the slide rod 23 to achieve guidance, and the other is used to install the control motor 25. This structure ensures that the rotating ring 14 is subjected to uniform force and moves smoothly during the adjustment process. The control motor 25 drives the control tube to rotate through the 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 interference from external factors.

[0063] 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, thereby rotating the control tube 28. This gear transmission method has the characteristics of stable transmission ratio and high transmission efficiency, and can accurately control the rotation speed and angle of the control tube.

[0064] The above shows and describes 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 above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. An injection mold for facilitating plastic recycling, comprising a lower mold core (6) and an upper mold core (7) respectively arranged on opposite surfaces of a lower mold (3) and an upper mold (4), and a feeding mechanism arranged on the upper mold (4) and guiding molten plastic into a mold cavity, wherein a mold cavity of a lithium battery shell is formed between the lower mold core (6) and the upper mold core (7), and an injection hole is provided on the top of the upper mold core (7) and is connected to the mold cavity, characterized in that: The feeding mechanism comprises a feeding ring (11) provided on the upper mold (4) and located above the injection hole, and a control assembly provided on the upper mold (4) and connected to the feeding ring (11); a feeding channel (12) is provided on the upper mold (4) in a vertical direction and passes through the inner ring of the feeding ring (11) and the injection hole; 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 mold 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, the rubber in the mold cavity forms an 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 demoulded, the upper mold (4) and the lower mold (3) move away from each other to demould the injection molded product, and the control component controls the feed ring (11) to rotate away from the upper mold (4), so that the waste material attached to the inner ring of the feed ring (11) and the inner wall of the feed channel (12) is separated from the inner ring of the feed ring (11) and the inner wall of the feed channel (12) under the action of the centrifugal force and friction generated by the rotation.

2. The injection mold for facilitating plastic recycling according to claim 1, characterized in that: The inner ring surface of the feed ring (11) is provided with a plurality of evenly distributed raised patterns, and the raised patterns spirally surround the inner ring of the feed ring (11); When the feed ring (11) rotates around its axis, the raised patterns enhance the frictional force 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 ring of the feed ring (11) and the inner wall of the feed channel (12).

3. The injection mold for facilitating plastic recycling according to claim 1 or 2, characterized in that: The control assembly comprises a control tube (28) arranged in a vertical direction and fixedly sleeved on a feed ring (11) through a tube mouth, a fixed screw ring (13) fixedly arranged above an upper mold (4) and sleeved on the control tube (28), and a control member for controlling the rotation of the control tube (28), wherein the inner ring of the fixed screw ring (13) is connected to the tube body of the control tube (28) by a thread.

4. The injection mold for facilitating plastic recycling according to claim 3, characterized in that: The control member includes a rotating ring (14) rotatably arranged on the top of the control tube (28), and an adjusting structure for adjusting the vertical distance between the rotating ring (14) and the upper mold (4); When the regulating structure controls the rotating ring (14) to move away from the upper mold (4), the control tube (28) is driven to rotate away from the upper mold (4) under the action of the threaded connection between the inner ring of the fixed screw ring (13) and the tube body of the control tube (28).

5. The injection mold for facilitating plastic recycling according to claim 4, characterized in that: The adjustment structure comprises a moving rod (18) which is arranged horizontally above the upper mold (4) and has one end fixedly connected to the outer ring of the rotating ring (14), a linkage rod (17) which is arranged in the vertical direction and has its bottom connected to the lower mold (3), two linkage racks (19) which are symmetrically arranged in linkage grooves (20) formed at the top of the linkage rod (17), and a linkage gear (21) which is rotatably arranged in the middle of the linkage groove (20) and is located between the two linkage racks (19); The opposite surfaces of the two linkage racks (19) are meshed with the linkage gear (21), one of the linkage racks (19) is fixedly arranged in the linkage groove (20), and the end of the other linkage rack (19) is fixedly connected to the moving rod (18).

6. The injection mold for facilitating plastic recycling according to claim 4, characterized in that: The adjustment structure comprises a moving rod (18) which is arranged horizontally above the upper mold (4) and has one end fixedly connected to the outer ring of the rotating ring (14), and a lifting cylinder (22) which is arranged on the top of the upper mold (4) in a vertical direction, and the output end of the lifting cylinder (22) is fixedly connected to the moving rod (18).

7. The injection mold for facilitating plastic recycling according to claim 4, characterized in that: The regulating structure comprises two sliders (24) fixedly arranged on the side of the rotating ring (14), a slide rod (23) arranged on the top of the upper mold (4) in the vertical direction and movably passing through one of the sliders (24), and a control motor (25) arranged on the other slider (24) and having an output end driving the control tube (28) to rotate through a gear set.

8. The injection mold for facilitating plastic recycling according to claim 7, characterized in that: The gear set includes a control gear (26) arranged on the output end of the control motor (25) and a driven gear (27) fixedly sleeved on the top position of the rod body of the control tube (28), and the driven gear (27) is meshed with the control gear (26).

9. The injection mold for facilitating plastic recycling according to any one of claims 4 to 8, characterized in that: A feed tray (5) is detachably mounted on the top of the upper mold (4). The feed tray (5) is sleeved on the feed ring (11) through a feed hole (10) opened on the end surface and is connected to a fixing screw ring (13).

10. The injection mold for facilitating plastic recycling according to claim 9, characterized in that: The symmetrical side surfaces of the fixed screw ring (13) are mounted on the top of the feed tray (5) via two vertically arranged fixing rods (15).

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