Solid waste recycling and forming mechanism of composite plastic

Abstract

The application discloses a solid waste recycling and forming mechanism for composite plastic, relates to the related technical field of plastic waste recycling and utilization, and comprises a screening seat, a sieve plate is internally installed in the screening seat, an electrostatic adsorption plate is connected to the sieve plate through a moving assembly, a conveying frame is installed at the side bottom end of the screening seat, a conveyor belt structure is arranged at the side end of the screening seat, one end of the conveyor belt structure is located at the bottom of the conveying frame, and a forming assembly is arranged at the side end of the conveyor belt structure. The solid waste recycling and forming mechanism for composite plastic processes waste material through the sieve plate and the electrostatic adsorption plate, reduces the problem that impurities in the waste material affect subsequent equipment, conveys plastic particles to the upper end of a conveying hopper through the conveyor belt structure, and the plastic particles enter a crushing box through the conveying hopper. The automatic conveying mode replaces manual carrying, greatly improves the material transfer efficiency, the conveying path is stable, waste caused by material scattering can be avoided, and the cost of raw materials is reduced.

Description

Technical Field

[0001] This invention relates to the technical field of plastic waste recycling, specifically to a solid waste recycling and molding mechanism for composite plastics. Background Technology

[0002] Plastic injection molding machines are key equipment that use thermoplastic or thermosetting materials to process and manufacture various shapes of plastic products in molds. During the production process, injection molding machines generate a certain amount of waste. If not treated, it will remain in the mold and affect the subsequent use of the injection molding machine.

[0003] To overcome the aforementioned defects, existing technology one (Chinese patent CN220763444U, published on April 12, 2024) describes a plastic injection molding machine that includes a base plate, molding mechanism, guide rail, barrel, nozzle, feed inlet, collection tank, material hopper, support plate, linear motor, push plate, touch switch, and controller. This application requires the linear motor to be activated to slide the barrel on the guide rail when the material needs to be discharged from the barrel, thereby moving the nozzle away from the feed inlet. The collection tank is placed below the nozzle, and the barrel is activated to discharge the material. The discharged material is collected in the collection tank, thus preventing it from remaining in the mold and affecting the subsequent use of the injection molding machine. Existing technology two (Chinese patent CN217729640U, published on November 4, 2022) also addresses this issue. This invention relates to the field of plastic molding machine technology and includes a molding mechanism for a plastic molding machine. It comprises a support frame, a plastic film, a positioning and conveying mechanism, and a cutting mechanism. Several upper and lower drive wheels arranged in a linear array are rotatably mounted inside the guide beam along its length. A square-shaped anti-slip pad is provided on the lower surface of the pressure frame. A sliding rack is fixedly mounted on the lower surface of the cutting blade. The positioning and conveying mechanism effectively prevents the plastic film from shifting during sliding transmission, ensuring molding quality and facilitating production. The clamping mechanism effectively prevents the plastic film from shifting due to pulling during mold closing. The cutting mechanism enables automatic cutting of the molded plastic film, reducing the production and subsequent operating costs of the cutting components to a certain extent.

[0004] Although existing technologies use automated feeding and cutting structures to remove or cut waste materials, manual handling and transfer are still required in subsequent processing. This not only increases labor intensity but may also cause material spillage. Furthermore, the waste materials contain impurities that may cause tool wear, equipment malfunctions, and molding defects after entering the processing equipment, thus affecting the effective recycling and reuse of waste materials and further increasing production costs.

[0005] To address the aforementioned issues, there is an urgent need for innovative designs based on existing composite plastic solid waste recycling molding mechanisms. Therefore, we propose that composite plastic solid waste recycling molding mechanisms can effectively solve these problems. Summary of the Invention

[0006] The purpose of this invention is to provide a solid waste recycling and molding mechanism for composite plastics, in order to solve the problem mentioned in the background art that the current market uses automatic feeding and cutting structures to discharge or cut waste materials, but manual handling and transfer are still required in subsequent processing. This not only increases labor intensity, but may also cause material to scatter. In addition, the waste materials contain impurities, which may cause blade wear, equipment failure and molding defects after entering the processing equipment, thereby affecting the effective recycling and reuse of waste materials and further increasing production costs.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a solid waste recycling and molding mechanism for composite plastics, comprising a screening seat, a screen plate installed inside the screening seat, an electrostatic adsorption plate connected to the screen plate via a moving component, a conveyor frame installed at the bottom side of the screening seat, a conveyor belt structure installed at the side of the screening seat, one end of the conveyor belt structure located at the bottom of the conveyor frame, a molding component installed at the side of the conveyor belt structure, the molding component including an injection molding machine installed at the side of the conveyor belt structure, a crushing box installed on the injection molding machine, a conveying hopper installed on the crushing box, the other end of the conveyor belt structure located at the top of the conveying hopper, and an injection mold installed at the end of the injection molding machine. The crushed particles enter the injection molding machine, and the uniform particle shape ensures more complete melting and reduces injection defects. The injection molding machine heats, melts, and pressurizes the particles, injecting the molten plastic into the injection mold. After cooling and solidification, the recycling and molding of plastic solid waste is completed. The entire process realizes the resource reuse of plastic solid waste.

[0008] Preferably, a shaking component is provided under the screening seat. The shaking component includes a base installed under the screening seat, a telescopic cylinder installed on the base, and a moving block connected to the output end of the telescopic cylinder. A first guide rod is connected through the moving block, and a first spring is installed on the outside of the first guide rod. The moving blocks are symmetrically arranged, and two moving blocks are connected by a connecting rod. The connecting rod is rotatably connected to one side of the moving block. The moving block is connected to the bottom of the screening seat by a support frame. The telescopic cylinder drives the moving block to reciprocate along the first guide rod. The first spring cooperates with the moving block to play a buffering and resetting role. The buffering effect of the first spring can effectively reduce the impact force when the moving block reciprocates, reduce component wear, and extend the service life of the equipment.

[0009] Preferably, a receiving box for receiving the screened plastic is provided on one side of the base.

[0010] Preferably, the moving component includes a motor mounted on the screening seat, the output end of the motor is connected to a screw, the screw is connected through the inside of the moving seat, and a guide rod is connected through the inside of the moving seat.

[0011] Preferably, the movable seat is provided with a rotating shaft, which is installed inside the electrostatic adsorption plate.

[0012] Preferably, a gear is installed on the outside of the rotating shaft, and a toothed plate is provided on one side of the receiving box of the screening seat. The gear on the outside of the rotating shaft meshes with the toothed plate, driving the rotating shaft to rotate and causing the electrostatic adsorption plate to flip. After the flip, the control system cuts off the power supply to the electrostatic adsorption plate, and the adsorbed impurities fall off and fall into the receiving box for collection. The automatic flipping and power-off impurity removal of the electrostatic adsorption plate is realized through the mechanical structure, without the need for manual intervention, thus improving the degree of automation of impurity removal.

[0013] Preferably, a pressing plate is provided on the other side of the moving block, and one side of the pressing plate is wavy.

[0014] Preferably, an auxiliary box is provided on the other side of the base, and an abutment rod is connected through the auxiliary box. A second spring is sleeved on the outside of the abutment rod, and the pressing plate contacts the abutment rod after it moves.

[0015] Preferably, a second guide rod is installed inside the auxiliary box, and a slider is slidably connected to the outside of the second guide rod. After the abutment rod moves, it contacts the slider. A third spring is provided on the outside of the second guide rod, and an impact member is installed on the slider. The impact member is located at the side end of the screening seat. The third spring on the outside of the second guide rod facilitates rebound. At this time, the slider drives the impact member to periodically impact the side end of the screening seat, further enhancing the shaking effect of the screening seat and improving screening efficiency.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: The solid waste recycling and molding mechanism of this composite plastic uses a sieve plate and an electrostatic adsorption plate to process the waste, reducing the problem of impurities inside the waste affecting subsequent equipment. The conveyor belt structure transports the plastic particles to the upper end of the conveyor hopper, and the plastic particles enter the crushing box through the conveyor hopper. The automated conveying method replaces manual handling, greatly improving the material transfer efficiency. Moreover, the stable conveying path can avoid waste caused by material scattering and reduce raw material costs. The specific details are as follows:

[0017] (1) The equipment achieves precise separation of impurities through the dual action of screening seat and electrostatic adsorption. The sieve plate retains large-sized impurities, while the electrostatic adsorption plate selectively adsorbs light impurities and collects them into the receiving box, effectively reducing the defect rate of the molded products.

[0018] (2) After screening, the plastic granules are conveyed into the conveyor belt through the conveyor frame and smoothly transported to the crushing box. No manual intervention is required throughout the process. The automated transfer not only greatly improves the material transfer efficiency, but also avoids the common problem of material scattering in manual handling, thus reducing resource waste.

[0019] (3) The equipment optimizes the form of plastic materials through graded processing. The crushing box further crushes the plastic blocks that have been initially screened into uniform fine particles, which are then transported to the injection molding machine. The uniform particle form makes the melting process more complete and the heating more uniform, thus solving the problem of incomplete melting caused by uneven particle size.

[0020] (4) The equipment adopts a dual shaking structure driven by telescopic cylinder and assisted by impact component. The moving block drives the screening seat to shake synchronously, and the extrusion plate drives the impact component to periodically impact the screening seat. The dual shaking breaks the material accumulation state, improves screening efficiency, solves the problem of screen hole blockage, and improves the stability and continuity of equipment operation.

[0021] (5) The moving seat drives the electrostatic adsorption plate to move and adsorb impurities. The gear meshes with the toothed plate to realize the automatic flipping of the adsorption plate. With the power off control, the impurities are removed. When the moving seat moves back, the adsorption plate is automatically reset, realizing continuous adsorption operation and improving the degree of automation of impurity removal. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the overall left-side structure of the present invention;

[0024] Figure 3 This is a schematic diagram of the overall rear view structure of the present invention;

[0025] Figure 4 This is a top view schematic diagram of the screening seat structure of the present invention;

[0026] Figure 5 This is a bottom view of the internal structure of the screening seat of the present invention;

[0027] Figure 6 This is a schematic diagram of the connection structure between the telescopic cylinder and the moving block of the present invention;

[0028] Figure 7 This is a schematic diagram of the cross-sectional structure of the screening seat of the present invention;

[0029] Figure 8 For the present invention Figure 7 Enlarged structural diagram at point A in the middle;

[0030] Figure 9 This is a schematic diagram of the connection structure between the moving block and the extrusion plate of the present invention;

[0031] Figure 10 This is a schematic diagram of the internal structure of the auxiliary box of the present invention.

[0032] In the diagram: 1. Screening seat; 2. Screen plate; 3. Conveying frame; 4. Conveyor belt structure; 5. Conveying bucket; 6. Crushing box; 7. Injection molding machine; 8. Injection mold; 9. Telescopic cylinder; 10. Moving block; 11. First guide rod; 12. First spring; 13. Connecting rod; 14. Support frame; 15. Base; 16. Receiving box; 17. Motor; 18. Screw; 19. Moving seat; 20. Guide rod; 21. Rotating shaft; 22. Gear; 23. Electrostatic adsorption plate; 24. Tooth plate; 25. Extrusion plate; 26. Auxiliary box; 27. Abutment rod; 28. Second spring; 29. ​​Second guide rod; 30. Slider; 31. Third spring; 32. Impact component. Detailed Implementation

[0033] 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.

[0034] Example 1: In this example, the plastic granules are further crushed into uniform fine particles in the crushing chamber 6. The crushed particles then enter the injection molding machine 7. The uniform particle shape ensures more complete melting and reduces injection molding defects. Figures 1-4The technical solution shown includes a screening seat 1, with a screen plate 2 installed inside. An electrostatic adsorption plate 23 is connected to the screen plate 2 via a moving component. A conveyor frame 3 is installed at the bottom side of the screening seat 1, and a conveyor belt structure 4 is located at one end of the side of the screening seat 1. One end of the conveyor belt structure 4 is located at the bottom of the conveyor frame 3, and a molding component is located at the side of the conveyor belt structure 4. The molding component includes an injection molding machine 7 installed at the side of the conveyor belt structure 4, a crushing box 6 installed on the injection molding machine 7, and a conveying hopper 5 installed on the crushing box 6. The other end of the conveyor belt structure 4 is located above the conveying hopper 5. An injection mold 8 is installed at the end of the injection molding machine 7. After plastic solid waste is fed into the screening seat 1, plastic particles of the required size initially fall to the bottom of the screening seat 1, while large impurities or undispersed plastic blocks remain on the screen plate 2. The electrostatic adsorption plate 23, when energized, adsorbs light impurities on the screen plate 2, reducing the problem of internal impurities affecting subsequent equipment. The plastic blocks that fall to the bottom of the screening seat 1 are conveyed by the conveying structure on the side of the sieve plate 2 to the receiving box 16. The plastic blocks are discharged through the conveying frame 3 and fall into the feed end of the conveyor belt structure 4. The conveyor belt structure 4 operates and conveys the plastic granules to the upper end of the conveying bucket 5. The plastic granules enter the crushing box 6 through the conveying bucket 5. The automated conveying method replaces manual handling, which greatly improves the material transfer efficiency. The stable conveying path can avoid waste caused by material scattering. The plastic granules are further crushed into uniform fine particles in the crushing box 6. The crushed particles enter the injection molding machine 7. The uniform particle shape can ensure more complete melting in the subsequent process and reduce injection defects. The injection molding machine 7 heats, melts and pressurizes the particles and injects the molten plastic into the injection mold 8. After cooling and shaping, the recycling and molding of plastic solid waste is completed. The whole process realizes the resource reuse of plastic solid waste, meets the requirements of environmental protection and energy conservation, and reduces the cost of raw materials.

[0035] Example 2: In this example, the electrostatic adsorption plate 23 can fully cover the surface of the sieve plate 2, specifically adsorbing light impurities, further improving the purity of the plastic material, as detailed below. Figures 4-7As shown, a shaking assembly is provided under the screening seat 1. The shaking assembly includes a base 15 installed under the screening seat 1, a telescopic cylinder 9 installed on the base 15, and a moving block 10 connected to the output end of the telescopic cylinder 9. A first guide rod 11 is connected through the interior of the two moving blocks 10, and a first spring 12 is installed on the outside of the first guide rod 11. The moving blocks 10 are symmetrically arranged and connected to each other by a connecting rod 13. The connecting rod 13 is rotatably connected to one side of the moving block 10. The moving block 10 is connected to the bottom of the screening seat 1 by a support frame 14. A receiving box 16 for receiving the screened plastic is provided on one side of the base 15. The moving assembly includes a motor 17 installed on the screening seat 1, a screw 18 connected to the output end of the motor 17, and a guide rod 20 connected through the interior of the moving seat 19. When the telescopic cylinder 9 on the base 15 is activated, the telescopic cylinder 9 drives the moving block 10 along the first guide rod. The first spring 12, in conjunction with the moving block 10, acts as a buffer and reset mechanism. The buffering effect of the first spring 12 effectively reduces the impact force during the reciprocating motion of the moving block 10, reduces component wear, and extends the service life of the equipment. The moving block 10 is driven to move by the connecting rod 13 at the side end, and the moving block 10 drives the screening seat 1 to vibrate synchronously through the support frame 14, so that the plastic solid waste on the screen plate 2 is dispersed. Plastic particles that meet the size requirements fall to the bottom of the screening seat 1 initially, while large impurities or undispersed plastic blocks remain on the screen plate 2. The vibration breaks the accumulation state of the plastic solid waste, improves the screening efficiency, and avoids the problem of incomplete screening caused by material accumulation. The motor 17 is turned on, and the motor 17 drives the screw 18 to rotate, driving the moving seat 19 to move horizontally along the guide rod 20, ensuring that the electrostatic adsorption plate 23 can fully cover the surface of the screen plate 2, specifically adsorbing light impurities, and further improving the purity of the plastic material.

[0036] Example 3: In this example, the electrostatic adsorption plate 23 is automatically flipped and de-energized for impurity removal via a mechanical structure, eliminating the need for manual intervention and improving the automation level of impurity removal. Specifically, as follows... Figures 4-10As shown, the following is disclosed: a rotating shaft 21 is provided on the movable seat 19, the rotating shaft 21 is installed inside the electrostatic adsorption plate 23, a gear 22 is installed on the outside of the rotating shaft 21, a toothed plate 24 is provided on one side of the screening seat 1 located in the receiving box 16, a pressing plate 25 is provided on the other side of the movable block 10, one side of the pressing plate 25 is wavy, an auxiliary box 26 is provided on the other side of the base 15, an abutment rod 27 is connected through the auxiliary box 26, a second spring 28 is sleeved on the outside of the abutment rod 27, and the pressing plate 25 contacts the abutment rod 27 after moving. A second guide rod 29 is installed inside the auxiliary box 26. A slider 30 is slidably connected to the outside of the second guide rod 29. After the abutment rod 27 moves, it contacts the slider 30. A third spring 31 is provided on the outside of the second guide rod 29. An impact member 32 is installed on the slider 30. The impact member 32 is located at the side end of the screening seat 1. When the moving seat 19 continues to move to the position of the toothed plate 24, the gear 22 on the outside of the rotating shaft 21 meshes with the toothed plate 24, driving the rotating shaft 21 to rotate, causing the electrostatic adsorption plate 23 to flip. After the flip, the control system cuts off the electrostatic adsorption plate. The power supply to the electrostatic adsorption plate 23 is activated, and the adsorbed impurities fall into the receiving box 16 for collection. The mechanical structure enables automatic flipping and power-off impurity removal of the electrostatic adsorption plate 23, eliminating the need for manual intervention and improving the automation level of impurity removal. When the moving base 19 moves back, the rotating shaft 21 rotates in the opposite direction via the toothed plate 24, facilitating the flipping of the electrostatic adsorption plate 23 onto the sieve plate 2, achieving a cyclical operation of adsorption and impurity removal, and improving the continuous working capacity of the equipment. When the moving block 10 reciprocates, it drives the pressing plate 25 on its other side to move synchronously. The wavy end face of the extrusion plate 25 periodically abuts against the abutment rod 27. After the abutment rod 27 compresses the second spring 28, it returns to its original position. The abutment rod 27 abuts against the slider 30 inside the auxiliary box 26, causing the slider 30 to move along the second guide rod 29. The third spring 31 on the outside of the second guide rod 29 facilitates rebound. At this time, the slider 30 drives the striking part 32 to periodically impact the side end of the screening seat 1, further enhancing the shaking effect of the screening seat 1 and improving the screening efficiency. The dual shaking design effectively solves the problem of material clogging the screen holes and ensures a smooth screening process.

[0037] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A solid waste recycling and molding mechanism for composite plastics, comprising a screening seat (1), characterized in that, The screening seat (1) is equipped with a sieve plate (2), and an electrostatic adsorption plate (23) is connected to the sieve plate (2) via a moving component. A conveyor frame (3) is installed at the bottom side of the screening seat (1). A conveyor belt structure (4) is provided at the side of the screening seat (1). One end of the conveyor belt structure (4) is located at the bottom of the conveyor frame (3). A molding component is provided at the side of the conveyor belt structure (4). The molding component includes an injection molding machine (7) installed at the side of the conveyor belt structure (4). A crushing box (6) is installed on the injection molding machine (7). A conveying bucket (5) is provided on the crushing box (6). The other end of the conveyor belt structure (4) is located at the top of the conveying bucket (5). An injection mold (8) is installed at the end of the injection molding machine (7). The moving component includes a motor (17) mounted on a screening seat (1), the output end of which is connected to a screw (18), the screw (18) being connected through the inside of the moving seat (19), and a guide rod (20) being connected through the inside of the moving seat (19). The movable seat (19) is provided with a rotating shaft (21), which is installed inside the electrostatic adsorption plate (23); A gear (22) is installed on the outside of the rotating shaft (21), and a toothed plate (24) is provided on one side of the receiving box (16) of the screening seat (1). An extrusion plate (25) is provided on the other side of the moving block (10), and one side of the extrusion plate (25) is wavy. An auxiliary box (26) is provided on the other side of the base (15). A contact rod (27) is connected through the auxiliary box (26). A second spring (28) is sleeved on the outside of the contact rod (27). After the extrusion plate (25) moves, it comes into contact with the contact rod (27). The auxiliary box (26) is equipped with a second guide rod (29), and a slider (30) is slidably connected to the outside of the second guide rod (29). After the abutment rod (27) moves, it contacts the slider (30). A third spring (31) is provided on the outside of the second guide rod (29). An impact member (32) is installed on the slider (30), and the impact member (32) is located at the side end of the screening seat (1).

2. The solid waste recycling molding mechanism for composite plastics according to claim 1, characterized in that: A shaking component is provided under the screening seat (1). The shaking component includes a base (15) installed under the screening seat (1). A telescopic cylinder (9) is installed on the base (15). A moving block (10) is connected to the output end of the telescopic cylinder (9). A first guide rod (11) is connected through the inside of the moving block (10). A first spring (12) is installed on the outside of the first guide rod (11). The moving blocks (10) are arranged symmetrically. Two moving blocks (10) are connected by a connecting rod (13). The connecting rod (13) is rotatably connected to one side of the moving block (10). The moving block (10) is connected to the bottom of the screening seat (1) by a support frame (14).

3. The solid waste recycling molding mechanism for composite plastics according to claim 2, characterized in that: A receiving box (16) for receiving the screened plastic is provided on one side of the base (15).

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