A kind of quick recovery mechanism of waste of automobile plastic injection
By designing support components, drive components, and elastic pressing components, the problem of clogging of easily resilient injection molded parts during the crushing process is solved, enabling efficient recycling and reuse of injection molded parts and ensuring the continuous operation of the recycling line.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NANJING MINGYUAN PLASTIC MOULD CO LTD
- Filing Date
- 2025-07-28
- Publication Date
- 2026-07-10
AI Technical Summary
TPO injection molded parts, which are prone to springback, are easily blocked by arching during the crushing process, causing the recycling line to stop. Existing technologies are difficult to solve this problem effectively.
A rapid recovery mechanism comprising a support component, a drive component, and an elastic pressing component was designed. It utilizes a helical spring plate to apply real-time pressure to the easily springback injection molded part, and generates downward airflow and elastic pressing through propeller-type fan blades to prevent bridging and ensure continuous operation.
It significantly reduces springback and clogging caused by crushing roller extrusion, improves crushing efficiency, shortens recycling cycle, reduces downtime and maintenance costs, and achieves efficient closed-loop reuse of injection molded parts.
Smart Images

Figure CN224476426U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of waste recycling mechanisms, specifically a rapid recycling mechanism for waste materials from automotive plastic parts injection molding. Background Technology
[0002] On the automotive injection molding production line, a "quick waste recycling mechanism" is placed close to the mold or next to the workstation. It can automatically cut and crush the scrap materials such as gates and runners into particles at the moment of demolding, and collect them under negative pressure. At the same time, defective products that are judged to be out of tolerance or have surface defects after full inspection are sent to a special crusher through the rework channel. They are first crushed into uniform particles with a particle size comparable to that of new materials, and then mixed with virgin resin in a set ratio and directly returned to the injection molding machine hopper. This realizes the immediate recycling of scrap materials and the closed-loop reuse of defective products, which not only avoids uneven melting of the whole part but also shortens the logistics and storage time.
[0003] When easily springy injection molded parts, such as TPO injection molded parts, enter the crusher, their high toughness causes them to instantly spring back after being flattened by the double rollers, bouncing repeatedly on the roller surface like a "rubber ball." They cannot be continuously rolled into the roller gap and are layered at the hopper outlet, eventually forming a stable "arch bridge" blockage. As a result, subsequent injection molding waste is cut off above the bridge, the crushing chamber runs idle, and the entire rapid recycling line is forced to stop. Therefore, a rapid recycling mechanism for automotive plastic injection molding waste is proposed to address the above problems. Utility Model Content
[0004] The purpose of this invention is to provide a rapid recycling mechanism for waste materials from the injection molding of automotive plastic parts, in order to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution:
[0006] A rapid recycling mechanism for waste materials from automotive plastic injection molding includes a crusher and a support assembly. A vertical plate and a support component are sequentially fixedly connected to the top of the crusher and the support assembly. A drive assembly is installed at the lower end of the support assembly. An elastic pressing assembly is fixedly connected to the bottom of the drive assembly. The support assembly includes a top plate. A guide rod and an anti-detachment plate are sequentially fixedly connected to the bottom of the top plate. A spring is fixedly connected to the top of the anti-detachment plate. The drive assembly includes a drive motor. A mounting frame is fixedly connected to the housing of the drive motor. An outer frame is fixedly connected to the bottom of the mounting frame. Extension plates are fixedly connected to the front and rear ends of the outer frame. Guide holes are provided on the inner side of the extension plates. A propeller-type fan blade is fixedly connected to the end of the drive motor's main shaft. An extension rod is fixedly connected to the bottom of the propeller-type fan blade. A protective net is fixedly connected to the bottom of the outer frame.
[0007] As a further optimization of this utility model, the elastic pressure assembly includes a horizontal plate, which is fixedly connected to an annular plate by fixing bolts. A spiral spring plate is fixedly connected to the bottom end of the annular plate, and the spiral spring plate has a spiral structure.
[0008] As a further optimization of this utility model, the top end of the horizontal plate is fixedly connected to the bottom end of the extension rod, and a gap is provided between the bottom end of the helical spring plate and the top end of the crushing and recycling machine.
[0009] As a further optimization of this utility model, the bottom end of the top plate is fixedly connected to the top end of the vertical plate, and the outer side of the guide rod is slidably connected inside the guide hole.
[0010] As a further optimization of this utility model, the spring is sleeved on the outside of the guide rod, and the top end of the spring is fixedly connected to the bottom end of the extension plate.
[0011] As a further optimization of this utility model, the inner side of the outer frame is a hollow structure, the propeller-type fan blades are embedded and installed inside the outer frame, and a gap is provided between the bottom end of the drive motor housing and the top end of the outer frame.
[0012] As a further optimization of this utility model, the protective netting near the center is a hollow structure, and the extension rod is inserted inside the protective netting.
[0013] Compared with the prior art, the beneficial effects of this utility model are:
[0014] In this invention, through the setting of support components, drive components and elastic pressing components, the device uses the elastic pressing mechanism to press down on the easily rebounding TPO injection molded parts in real time, which significantly reduces the rebound and arching blockage caused by the extrusion of the crushing roller, ensures the continuous operation of the recycling line, and is compatible with injection molded parts of multiple sizes, improves crushing efficiency, shortens the recycling cycle, effectively reduces downtime and maintenance costs, and realizes efficient closed-loop reuse of scrap and defective products. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0016] Figure 2 This is an exploded structural diagram of the entire utility model;
[0017] Figure 3 This is a schematic diagram of the guide rod structure of this utility model;
[0018] Figure 4 This is a schematic diagram of the drive component structure of this utility model;
[0019] Figure 5 This is a schematic diagram of the propeller-type fan blade structure of this utility model;
[0020] Figure 6 This is an exploded structural diagram of the elastic pressing assembly of this utility model.
[0021] In the picture: 1. Crusher and recycler; 2. Vertical plate;
[0022] 3. Support components; 31. Top plate; 32. Guide rod; 33. Anti-detachment plate; 34. Spring;
[0023] 4. Drive assembly; 41. Drive motor; 42. Mounting bracket; 43. Extension plate; 44. Guide hole; 45. Outer frame; 46. Propeller blades; 47. Extension rod; 48. Protective net;
[0024] 5. Elastic pressure assembly; 51. Horizontal plate; 52. Fixing bolt; 53. Annular plate; 54. Helical spring plate. Detailed Implementation
[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0026] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.
[0027] Please see Figures 1-6 This utility model provides a technical solution:
[0028] A rapid recycling mechanism for waste materials from automotive plastic injection molding includes a crusher 1. A vertical plate 2 and a support assembly 3 are sequentially fixedly connected to the top of the crusher 1. A drive assembly 4 is installed at the lower end of the support assembly 3. An elastic pressing assembly 5 is fixedly connected to the bottom of the drive assembly 4. The support assembly 3 includes a top plate 31. A guide rod 32 and an anti-detachment plate 33 are sequentially fixedly connected to the bottom of the top plate 31. A spring 34 is fixedly connected to the top of the anti-detachment plate 33. The drive assembly 4 includes a drive motor 41. A mounting frame 42 is fixedly connected to the housing of the drive motor 41. An outer frame 45 is fixedly connected to the bottom of the mounting frame 42. Extension plates 43 are fixedly connected to the front and rear ends of the outer frame 45. Guide holes 44 are provided on the inner side of the extension plates 43. A propeller-type fan blade 46 is fixedly connected to the end of the main shaft of the drive motor 41. An extension rod 47 is fixedly connected to the bottom of the propeller-type fan blade 46. A protective net 48 is fixedly connected to the bottom of the outer frame 45.
[0029] As a further implementation of this solution, the elastic pressing assembly 5 includes a horizontal plate 51, which is fixedly connected to an annular plate 53 by fixing bolts 52. A spiral spring plate 54 is fixedly connected to the bottom end of the annular plate 53. The spiral spring plate 54 has a spiral structure. The top end of the horizontal plate 51 is fixedly connected to the bottom end of the extension rod 47. A gap is provided between the bottom end of the spiral spring plate 54 and the top end of the crushing and recycling machine 1. With the above settings, the spiral spring plate 54 generates a continuous downward thrust when rotating, which forms a flexible guide and forced pressing on the high-resilience TPO injection molded parts, preventing them from bouncing or stacking into an arch bridge above the roller gap, significantly reducing the probability of clogging. At the same time, the spiral curved surface can adapt to injection molded parts of different thicknesses and contours, improving versatility and crushing efficiency.
[0030] As a further implementation of this solution, the bottom end of the top plate 31 is fixedly connected to the top end of the vertical plate 2, the outer side of the guide rod 32 is slidably connected to the inside of the guide hole 44, the spring 34 is sleeved on the outer side of the guide rod 32, and the top end of the spring 34 is fixedly connected to the bottom end of the extension plate 43. Through the above arrangement, it plays a guiding role when the drive component 4 moves. At the same time, under the elastic support of multiple springs 34, a certain gap can be left between the spiral spring plate 54 and the crushing and recycling machine 1 to facilitate feeding.
[0031] As a further implementation of this solution, the inner side of the outer frame 45 is hollow, and the propeller-type fan blade 46 is embedded inside the outer frame 45. A gap is provided between the bottom end of the drive motor 41 housing and the top end of the outer frame 45. The protective net 48 is hollow near the center, and the extension rod 47 is inserted inside the protective net 48. Through the above settings, the rotation of the spiral spring plate 54 can be controlled to prevent continuous collision between the spiral spring plate 54 and the injection molded part. At the same time, through the air guiding effect of the propeller-type fan blade 46, the drive assembly 4 and the elastic pressing assembly 5 move downward as a whole, so that the spiral spring plate 54 squeezes the injection molded part, preventing the injection molded part from rebounding and improving the crushing efficiency.
[0032] Workflow: When crushing and recycling automotive injection molded parts, the bottom end of the spiral spring plate 54 is positioned above the crusher 1 with a certain gap. The automotive injection molded parts are placed on the top of the crusher 1, and crushed by the existing crusher 1. When encountering TPO elastomer injection molded parts that are difficult to crush, the drive motor 41 is activated to drive the propeller blades 46, extension rods 47, and elastic pressing assembly 5 to rotate as a whole. The protective net 48 prevents large debris from entering the outer frame 45 and contacting the propeller blades 46, improving safety. The high-speed rotation of the propeller blades 46 generates a downward airflow, causing the propeller blades 46 to move downward. The propeller blades 46 drive the drive assembly 4 to move downward as a whole. At this time, the extension plate 43 compresses the spring 34. The force setting of the propeller blades 46 can overcome multiple... The sum of the elastic forces of the springs 34 causes the extension plate 43 to compress the springs 34. The anti-detachment plate 33 controls the downward movement distance of the extension plate 43, preventing the helical spring plate 54 from moving excessively downward. This causes the helical spring plate 54 to contact the automotive injection molded part, and the helical spring plate 54 will rotate. The elastic force of the helical spring plate 54 can press the automotive injection molded part downward, preventing it from rebounding downward and improving the efficiency of crushing the automotive injection molded part. At the same time, the shape of the helical spring plate 54 can press down on automotive injection molded parts of various sizes. The crushed injection molded parts flow out from the lower end of the crushing and recycling machine 1 for recycling. Based on the above principles, when crushing and recycling easily rebounding injection molded parts, the device significantly reduces the probability of upward rebound caused by the compression of the crushing roller, avoids the accumulation and blockage of injection molded parts, improves the efficiency of crushing injection molded parts, and ensures the normal operation of the recycling line.
[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A rapid recycling mechanism for waste materials from automotive plastic injection molding, comprising a crusher and recycling machine (1), characterized in that: The top of the crushing and recycling machine (1) is fixedly connected to a vertical plate (2) and a support component (3). The lower end of the support component (3) is equipped with a drive component (4). The bottom end of the drive component (4) is fixedly connected to an elastic pressing component (5). The support assembly (3) includes a top plate (31), and a guide rod (32) and an anti-detachment piece (33) are fixedly connected to the bottom end of the top plate (31) in sequence. A spring (34) is fixedly connected to the top end of the anti-detachment piece (33). The drive assembly (4) includes a drive motor (41), a fixed frame (42) is fixedly connected to the housing of the drive motor (41), an outer frame (45) is fixedly connected to the bottom end of the fixed frame (42), an extension plate (43) is fixedly connected to the front end and the rear end of the outer frame (45), a guide hole (44) is opened on the inner side of the extension plate (43), a propeller-type fan blade (46) is fixedly connected to the end of the main shaft of the drive motor (41), an extension rod (47) is fixedly connected to the bottom end of the propeller-type fan blade (46), and a protective net (48) is fixedly connected to the bottom end of the outer frame (45).
2. The rapid recycling mechanism for waste materials from automotive plastic injection molding according to claim 1, characterized in that: The elastic pressure assembly (5) includes a horizontal plate (51), which is fixedly connected to an annular plate (53) by a fixing bolt (52). A spiral spring plate (54) is fixedly connected to the bottom end of the annular plate (53), and the spiral spring plate (54) has a spiral structure.
3. The rapid recycling mechanism for waste materials from automotive plastic injection molding according to claim 2, characterized in that: The top end of the horizontal plate (51) is fixedly connected to the bottom end of the extension rod (47), and there is a gap between the bottom end of the spiral spring plate (54) and the top end of the crushing and recycling machine (1).
4. The rapid recycling mechanism for waste materials from automotive plastic injection molding according to claim 1, characterized in that: The bottom end of the top plate (31) is fixedly connected to the top end of the vertical plate (2), and the outer side of the guide rod (32) is slidably connected to the inside of the guide hole (44).
5. A rapid recycling mechanism for waste materials from automotive plastic injection molding according to claim 1, characterized in that: The spring (34) is sleeved on the outside of the guide rod (32), and the top end of the spring (34) is fixedly connected to the bottom end of the extension plate (43).
6. The rapid recycling mechanism for waste materials from automotive plastic injection molding according to claim 1, characterized in that: The inner side of the outer frame (45) is hollow, the propeller-type fan blade (46) is embedded in the inner side of the outer frame (45), and there is a gap between the bottom end of the housing of the drive motor (41) and the top end of the outer frame (45).
7. A rapid recycling mechanism for waste materials from automotive plastic injection molding according to claim 1, characterized in that: The protective net (48) is hollow near the center, and the extension rod (47) is inserted inside the protective net (48).