A plastic offcut melting, filtering, pressurizing and injecting device

By combining screening and cutting technologies in a plastic scrap melting, filtering, pressurized injection device, the clogging problem of plastic recycling equipment has been solved, enabling plastic size control and improved production efficiency.

CN224296498UActive Publication Date: 2026-05-29SHANDONG GOOD FRIENDS BIOTECHNOLOGY CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHANDONG GOOD FRIENDS BIOTECHNOLOGY CO LTD
Filing Date
2025-05-23
Publication Date
2026-05-29

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  • Figure CN224296498U_ABST
    Figure CN224296498U_ABST
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Abstract

The utility model relates to the technical field of plastic tableware production and processing, disclose a kind of plastic leftover material melting filtration pressurization injection device, including injection molding machine main body, injection molding machine main body is used to melt filtration injection to plastic;Processing component, processing component is set on injection molding machine main body, processing component is used to process plastic, processing component includes processing tank, driving motor, fixed block and sieve plate frame, processing tank is arranged at the input end of injection molding machine main body, driving motor is fixedly connected with the upper end of processing tank, fixed block array is arranged in processing tank, driving motor is driven fixed block and the structure on fixed block by output shaft transmission to crush processing to plastic, the plastic after crushing is driven sieve plate frame vibration in driving motor transmission, screening to the plastic after crushing, avoid larger size plastic in conveying and pipeline inner wall abutment, plastic is blocked in pipeline, the operation of device is impacted.
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Description

Technical Field

[0001] This utility model belongs to the field of plastic tableware production and processing technology, specifically, it relates to a plastic scrap melting, filtering, pressurizing injection device. Background Technology

[0002] Plastic tableware refers to utensils made of plastic materials used for holding and eating food. They are commonly found in disposable tableware or everyday tableware. Due to their lightweight, durability, and low cost, plastic tableware is widely used worldwide.

[0003] A document with publication number (CN220700134U) discloses an injection molding machine for processing recycled plastics. The machine includes a frame, on which are mounted a raw material melting mechanism for melting recycled plastics and an injection mechanism for injecting the molten raw material into a mold cavity. The key feature is that a filtration mechanism is provided between the raw material melting mechanism and the injection mechanism to filter the molten plastic formed by the raw material melting mechanism to remove impurities. The advantages are its simple structure, eliminating the granulation step of recycled plastics, directly feeding the raw material to the raw material melting mechanism, melting it to form molten plastic, filtering out impurities, and then outputting it to the injection mechanism. The injection mechanism injects the molten plastic into the mold to form the product. Throughout the process, multiple manual transport steps are eliminated, effectively saving labor costs and improving production efficiency.

[0004] The aforementioned device feeds recycled plastic supports into the device. When the plastic is too large, it comes into contact with the inner wall of the conveying device, causing blockage and preventing the plastic from being processed, thus affecting the operation of the device.

[0005] In view of this, this utility model is proposed. Utility Model Content

[0006] To solve the technical problems of plastic recycling and processing, the basic concept of the technical solution adopted by this utility model is as follows:

[0007] A plastic scrap melting, filtering, pressurizing, and injection device includes an injection molding machine body for melting, filtering, and injecting plastic; and a processing component mounted on the injection molding machine body for processing the plastic. The processing component includes a processing tank, a drive motor, fixed blocks, and a sieve frame. The processing tank is located at the input end of the injection molding machine body. The drive motor is fixedly connected to the upper end of the processing tank. An array of fixed blocks is located inside the processing tank, and each fixed block is drivenly connected to the drive motor. The sieve frame is located at the bottom end of the processing tank and is elastically connected to the inner wall of the processing tank. The sieve frame is also drivenly connected to the drive motor. A feeding port is fixedly connected to the upper end of the processing tank.

[0008] In a preferred embodiment of this utility model, the output end of the drive motor is fixedly connected to a drive shaft, and the drive shaft is rotatably connected to the processing tank, and each fixed block is fixedly connected to the drive shaft.

[0009] In a preferred embodiment of this utility model, the peripheral array of the fixed block is provided with cutting blocks and cross blades, and each cutting block and cross blade is fixedly connected to the fixed block.

[0010] In a preferred embodiment of the present invention, blades are arranged in an array between each of the cutting blocks and the cross blades, and each blade is fixedly connected to the corresponding cutting block and cross blades.

[0011] In a preferred embodiment of the present invention, each of the cutting blocks and the cross blades is provided with an end block at its end, and each end block is fixedly connected to the corresponding cutting block and the cross blade, and the end of each end block is arc-shaped.

[0012] In a preferred embodiment of the present invention, the bottom of the drive shaft is provided with transmission rods, and each transmission rod is fixedly connected to the drive shaft. The end of the transmission rod is fixedly connected with a first abutting block, and the corresponding first abutting block abuts against a second abutting block.

[0013] In a preferred embodiment of the present invention, each of the second abutment blocks is fixedly connected to the corresponding sieve plate frame, the sieve plate frame is elastically connected to the mounting block, and the mounting block is fixedly connected to the bottom of the processing tank.

[0014] In a preferred embodiment of this utility model, the sieve plate frame is slidably connected to the mounting block, a spring is provided between the mounting block and the sieve plate frame, the ends of the spring are fixedly connected to the corresponding mounting block and the sieve plate frame, and a sieve plate is fixedly connected to the middle of the sieve plate frame.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] 1. This is a plastic scrap melting, filtering, pressurizing, and injection device. The drive motor drives the fixed block and the structure on the fixed block to crush the plastic through the output shaft. The crushed plastic drives the screen frame to vibrate in the drive motor, which screens the crushed plastic and avoids larger plastic pieces from coming into contact with the inner wall of the pipe during transportation, causing the plastic to block the pipe and affecting the operation of the device.

[0017] 2. This plastic scrap melting, filtering, pressurizing, and injection device features a fixed block that drives the cutting block, cross blade, blade, and end block to rotate. The cutting block and cross blade collide with the plastic during rotation, cutting and pulverizing the plastic. The pulverized plastic is then subjected to secondary cutting by the blade, resulting in detailed pulverization and reduction in size. Furthermore, the continuous cutting and pulverization by the cutting block, cross blade, blade, and end block ensures the plastic is pulverized into suitable sizes, preventing excessively large plastic items from clogging the device.

[0018] 3. This plastic scrap melting, filtering, pressurizing, and injection device comprises a drive shaft that drives a transmission rod and a first abutting block. The first abutting block abuts against and presses down on a second abutting block. The second abutting block pushes a screen frame to compress a spring. After the spring deforms, it reacts on the screen frame, causing it to rise and fall within the mounting block, thus screening the pulverized material. The transmission rod agitates the material at the bottom of the processing tank, and small-sized materials move downwards with the rotation, passing through the screen frame for screening, thus controlling the processing size.

[0019] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0020] In the attached diagram:

[0021] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0022] Figure 2 This is a three-dimensional schematic diagram of the processing component of this utility model;

[0023] Figure 3 This is a schematic diagram of the internal structure of the processing component of this utility model;

[0024] Figure 4 This is a schematic diagram of the upper structure of the sieve plate frame of this utility model;

[0025] Figure 5 This is a schematic diagram of the upper structure of the fixing block of this utility model.

[0026] In the diagram: 1. Injection molding machine body; 2. Processing tank; 21. Drive motor; 22. Feed port; 3. Drive shaft; 31. Fixing block; 32. Cutting block; 33. Cross blade; 34. Blade; 35. End block; 4. Mounting block; 41. Screen plate frame; 42. Spring; 5. Transmission rod; 51. First abutment block; 52. Second abutment block. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model.

[0028] Please see Figure 1-5 A plastic scrap melting, filtering, and pressurized injection device includes an injection molding machine body 1 for injecting and filtering plastic; and a processing component mounted on the injection molding machine body 1 for processing the plastic. The processing component includes a processing tank 2, a drive motor 21, fixed blocks 31, and a screen frame 41. The processing tank 2 is located at the input end of the injection molding machine body 1. The drive motor 21 is fixedly connected to the upper end of the processing tank 2. The fixed blocks 31 are arranged in an array inside the processing tank 2, and each fixed block 31 is drivenly connected to the drive motor 21. The screen frame 41 is located at the bottom end of the processing tank 2. The screen frame 41 is elastically connected to the inner wall of the processing tank 2, and the screen frame 41 is connected to the drive motor 21. The upper end of the processing tank 2 is fixedly connected to the feeding port 22. The plastic is manually fed into the processing tank 2 through the feeding port 22. The drive motor 21 drives the fixed block 31 and the structure on the fixed block 31 to crush the plastic through the output shaft. The crushed plastic drives the screen frame 41 to vibrate in the drive motor 21, which screens the crushed plastic to avoid larger plastics from abutting against the inner wall of the pipe during transportation, causing the plastic to block in the pipe and affecting the operation of the device. The crushed plastic is melted and filtered by the injection molding machine body 1.

[0029] It is worth noting that the injection molding machine body 1 includes a frame, on which a raw material melting mechanism for melting recycled plastic and an injection mechanism for injecting the molten raw material into the mold cavity are provided. A filtering mechanism is provided between the raw material melting mechanism and the injection mechanism to filter the plastic melt formed by the raw material melting mechanism to remove impurities from the plastic melt. The injection molding machine body 1 has been disclosed in the prior art of an injection molding machine for processing recycled plastic CN220700134U, and will not be described in detail here.

[0030] The output end of the drive motor 21 is fixedly connected to the drive shaft 3, and the drive shaft 3 is rotatably connected to the processing tank 2. Each fixed block 31 is fixedly connected to the drive shaft 3. Cutting blocks 32 and cross blades 33 are arranged in an array around the fixed block 31. Each cutting block 32 and cross blade 33 is fixedly connected to the fixed block 31. Blades 34 are arranged in an array between each cutting block 32 and cross blade 33. Each blade 34 is fixedly connected to the corresponding cutting block 32 and cross blade 33. Each cutting block 32 and cross blade 33 has an end block 35 at its end, and each end block 35 is fixedly connected to the corresponding cutting block 32 and cross blade 33. The end of each end block 35 is arc-shaped. In this configuration, the drive motor 21 drives the drive shaft 3 through the output shaft. The drive shaft 3 drives the corresponding fixed block 31 to rotate. The fixed block 31 drives the cutting block 32, the horizontal blade 33, the blade 34, and the end block 35 to rotate. The cutting block 32 and the horizontal blade 33 collide with the plastic during rotation, cutting and crushing the plastic. The crushed plastic is then further cut by the impact of the blade 34, resulting in detailed crushing and cutting of the plastic, reducing its size. The plastic is continuously cut and crushed multiple times by the cutting block 32, the horizontal blade 33, the blade 34, and the end block 35, resulting in the plastic being crushed and cut into a suitable size, preventing the plastic from being too large and clogging the device.

[0031] The drive shaft 3 has a bottom array of transmission rods 5, each of which is fixedly connected to the drive shaft 3. A first abutment block 51 is fixedly connected to the end of each transmission rod 5. The first abutment block 51 abuts against a second abutment block 52. Each second abutment block 52 is fixedly connected to a corresponding sieve plate frame 41. A mounting block 4 is elastically connected to the sieve plate frame 41 and fixedly connected to the bottom of the processing tank 2. The sieve plate frame 41 and the mounting block 4 are slidably connected. A spring 42 is provided between the mounting block 4 and the sieve plate frame 41. The ends of the springs 42 are fixedly connected to the corresponding mounting blocks 4 and the sieve plate frame 41. A sieve plate is fixedly connected to the middle of the sieve plate frame 41. The drive shaft 3 rotates to drive... The transmission rod 5 and the first abutting block 51 abut against the second abutting block 52 during rotation, and the first abutting block 51 presses down on the second abutting block 52. The second abutting block 52 drives the screen frame 41. The screen frame 41 slides downward and compresses the spring 42. The spring 42 deforms after compression and applies the deformation force to the screen frame 41. The screen frame 41 rises and falls within the mounting block 4. During the rising and falling, the crushed plastic is screened, and the processing size of the plastic is controlled. During the rotation of the transmission rod 5, the plastic at the bottom of the processing tank 2 is stirred. During the stirring, the plastic follows the rotation. During the rotation, the small-sized plastic moves from the top to the bottom and comes into contact with the screen frame 41 during the movement. The plastic is screened by the screen frame 41.

[0032] Working Principle: Plastic is manually fed into the processing tank 2 through the feeding port 22. The drive motor 21, via its output shaft, drives the fixed block 31 and its structure to crush the plastic. The crushed plastic, driven by the drive motor 21, vibrates the screen frame 41, screening the plastic to prevent larger pieces from contacting the inner wall of the pipe during transport and causing blockages that could affect the operation of the device. The crushed plastic is then melted, filtered, and injected into the injection molding machine body 1. The drive motor 21, via its output shaft, drives the drive shaft 3, which in turn rotates the corresponding fixed block 31. The fixed block 31 then rotates the cutting block 32, the horizontal blade 33, the blade 34, and the end block 35. The cutting block 32 and the horizontal blade 33 impact the plastic during rotation, cutting and crushing it. The crushed plastic is then subjected to a second cut by the impact of the blade 34, resulting in more detailed crushing and reduction in size. The plastic is continuously cut and crushed multiple times by components such as the cutter 32, cross blade 33, blade 34, and end block 35 to cut the plastic into appropriate sizes, preventing the plastic from being too large and clogging the device. The drive shaft 3 drives the transmission rod 5 and the first abutting block 51 during rotation. The first abutting block 51 abuts against the second abutting block 52 during rotation and presses down the second abutting block 52. The second abutting block 52 drives the screen plate frame 41. The screen plate frame 41 slides downward and compresses the spring 42. The spring 42 deforms after compression and applies the deformation force to the screen plate frame 41. The screen plate frame 41 rises and falls within the mounting block 4. During the rise and fall, the crushed plastic is screened to control the processing size of the plastic. The transmission rod 5 stirs the plastic at the bottom of the processing tank 2 during rotation. During the stirring, the plastic follows the rotation. Small-sized plastic moves from the top to the bottom during rotation and comes into contact with the screen plate frame 41 during movement, and is screened by the screen plate frame 41.

[0033] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. A plastic scrap melting, filtering, pressurizing, and injection device, characterized in that, include: The main body of the injection molding machine (1) is used for injecting molten plastic through filtering. The processing component is set on the main body (1) of the injection molding machine. The processing component is used to process plastic. The processing component includes a processing tank (2), a drive motor (21), a fixing block (31) and a screen frame (41). The processing tank (2) is set at the input end of the main body (1) of the injection molding machine. The drive motor (21) is fixedly connected to the upper end of the processing tank (2). The fixing block (31) array is set inside the processing tank (2), and each fixing block (31) is drivenly connected to the drive motor (21). The screen frame (41) is set at the bottom end of the processing tank (2). The screen frame (41) is elastically connected to the inner wall of the processing tank (2), and the screen frame (41) is drivenly connected to the drive motor (21). The upper end of the processing tank (2) is fixedly connected to a feeding port (22).

2. The plastic scrap melting, filtering, pressurizing, and injection device according to claim 1, characterized in that, The output end of the drive motor (21) is fixedly connected to the drive shaft (3), and the drive shaft (3) is rotatably connected to the processing tank (2), and each fixed block (31) is fixedly connected to the drive shaft (3).

3. The plastic scrap melting, filtering, pressurizing, and injection device according to claim 1, characterized in that, The peripheral array of the fixed block (31) is provided with cutting blocks (32) and cross blades (33), and each cutting block (32) and cross blade (33) is fixedly connected to the fixed block (31).

4. The plastic scrap melting, filtering, pressurizing, and injection device according to claim 3, characterized in that, Each of the cut pieces (32) and the cross blade (33) is provided with an array of blades (34), each blade (34) being fixedly connected to the corresponding cut piece (32) and cross blade (33).

5. The plastic scrap melting, filtering, pressurizing, and injection device according to claim 3, characterized in that, Each of the cut pieces (32) and the cross blade (33) is provided with an end block (35) at its end, and each end block (35) is fixedly connected to the corresponding cut piece (32) and cross blade (33), and the end of each end block (35) is arc-shaped.

6. The plastic scrap melting, filtering, pressurizing, and injection device according to claim 2, characterized in that, The bottom array of the drive shaft (3) is provided with transmission rods (5), and each transmission rod (5) is fixedly connected to the drive shaft (3). The end of the transmission rod (5) is fixedly connected with a first abutting block (51), and the corresponding first abutting block (51) abuts against a second abutting block (52).

7. The plastic scrap melting, filtering, pressurizing, and injection device according to claim 6, characterized in that, Each of the second abutment blocks (52) is fixedly connected to the corresponding sieve plate frame (41), which is elastically connected to the mounting block (4), and the mounting block (4) is fixedly connected to the bottom of the processing tank (2).

8. The plastic scrap melting, filtering, pressurizing, and injection device according to claim 7, characterized in that, The sieve plate frame (41) is slidably connected to the mounting block (4). A spring (42) is provided between the mounting block (4) and the sieve plate frame (41). The ends of the spring (42) are fixedly connected to the corresponding mounting block (4) and the sieve plate frame (41). A sieve plate is fixedly connected to the middle part of the sieve plate frame (41).