Raw material crushing device for plastic particle processing

Abstract

The utility model provides a raw material crushing device for plastic particle processing, which relates to the technical field of plastic processing and comprises a crushing box, a blanking hopper is clamped at the bottom of the crushing box, a material receiving frame is placed at the bottom of the blanking hopper, driving motors are mounted on two sides of the crushing box, and one side of each driving motor is in transmission connection with a driving shaft. One end of the driving shaft penetrates through the interior of the crushing box, a crushing shaft is installed outside the driving shaft, a ring groove is formed in the exterior of the crushing shaft, clamping holes are annularly arrayed in the ring groove, a clamping ring is clamped in the ring groove, and crushing teeth are installed and fixed in a unique mode that a first ladder base, a second ladder base and an inner cavity of the clamping ring are matched; the second ladder base interacts with the stopping block in the inner cavity by means of the shape characteristic of the second ladder base, a reliable bottom stopping mechanism is formed, and the broken teeth are prevented from being disengaged due to upward counter-acting force in the working process.

Description

Technical Field

[0001] This utility model relates to the field of plastic processing technology, and in particular to a raw material crushing device for processing plastic particles. Background Technology

[0002] In the field of plastic particle processing, raw material crushing is a crucial step, directly impacting the quality and production efficiency of subsequent plastic products. With the rapid development of the plastics industry, the application range of plastic products continues to expand, from everyday consumer products such as plastic containers, stationery, and toys, to industrial applications such as automotive parts, electronic device housings, and plastic pipe fittings in building materials. This necessitates increasingly refined processing of plastic raw materials. The quality of plastic particle crushing largely determines the physical properties, appearance quality, and processing performance of plastic products.

[0003] According to Chinese Patent No. CN221659809U, a raw material crushing device for plastic particle processing is disclosed, including a crushing box and a guide box. The guide box is installed at the lower end of the crushing box. A crushing component is provided on the crushing box. The crushing component can protect the raw material for plastic particle processing during crushing. The crushing component includes a connecting plate and a protective box. The protective box is slidably inserted into the inner wall of the crushing box. The connecting plate is installed at one end of the protective box. This relates to the field of plastic particle technology: by sliding a protective box above the crushing device, the raw material for plastic particle processing is protected during crushing, preventing the raw material from splashing during crushing. By installing a fan unit inside the protective box, air is blown into the crushing box, causing dust to move downwards and preventing dust from floating upwards during the crushing of the plastic particle raw material.

[0004] While existing crushing devices can quickly crush plastic particles, they suffer from the following problems: the overall structure of traditional crushing devices lacks flexibility and convenience, the blades cannot be quickly disassembled, and the installation method is cumbersome. Maintenance personnel need to spend a lot of time and effort to disassemble the entire crushing shaft assembly or perform complex welding, bolt removal, and reinstallation work. For large-scale production enterprises, this will cause serious delays in production schedules, reduce production efficiency, and fail to meet the needs of modern high-efficiency production. Therefore, a raw material crushing device for plastic particle processing is needed to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a raw material crushing device for processing plastic particles.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a raw material crushing device for processing plastic particles, comprising a crushing box, a feeding hopper being snapped into the bottom of the crushing box, a receiving frame being placed at the bottom of the feeding hopper, drive motors being installed on both sides of the crushing box, a drive shaft being drivenly connected to one side of the drive motor, one end of the drive shaft penetrating the interior of the crushing box, a crushing shaft being installed on the outside of the drive shaft, a groove being formed on the outside of the crushing shaft, a retaining hole being arranged in a ring array in the groove, and a retaining ring being snapped into the groove.

[0007] Preferably, the front of the retaining ring is embedded with a buckle block, and the inside of the retaining ring has a ring array of retaining heads, which are engaged and adapted to each other.

[0008] Preferably, the surface of the retaining ring has an interface array in a ring, the outer side of the interface has a limit insertion hole array in a ring, and the inside of the retaining ring has an inner cavity, which is connected to the interface.

[0009] Preferably, a sliding groove is provided on both sides of the bottom of the inner cavity, and a slot is provided in the middle of the bottom end of the inner cavity. A support plate is slidably connected inside the sliding grooves on both sides.

[0010] Preferably, a blocking block is embedded in the top of the support plate, the blocking block is slidably connected to the inner wall of the cavity, a telescopic spring is connected to one side of the blocking block, the end of the telescopic spring is connected to the side wall of the cavity, and the blocking block is trapezoidal in shape.

[0011] Preferably, the bottom of the chipper is connected to a connector, and the bottom of the connector is equipped with a first ladder seat. The two sides, front and back of the first ladder seat are threaded with limit posts. The limit posts are L-shaped, and the limit posts and limit holes are interlocked and adapted to each other.

[0012] Preferably, a connecting shaft is connected to the middle of the bottom end of the connector, and a second ladder seat is installed at the bottom end of the connecting shaft. The first and second ladder seats are both frustum-shaped and are opposite to each other, appearing as mirror images. A mounting block is embedded at the bottom end of the second ladder seat, and a spring post is connected to the bottom end of the mounting block. The bottom end of the spring post and the slot in the inner cavity engage with each other.

[0013] Beneficial effects

[0014] In this invention, the crushing teeth are installed and fixed through a unique combination of a first and second ladder seat and the inner cavity of the retaining ring. During installation, the second ladder seat, with its shape, interacts with the blocking block in the inner cavity to form a reliable bottom blocking mechanism, preventing the crushing teeth from coming off due to upward reaction force during operation. Simultaneously, the precise engagement of the limiting post and the limiting insertion hole on the outside of the first ladder seat further restricts the displacement of the crushing teeth in the horizontal and vertical directions. This double-fixing structure ensures that the crushing teeth maintain a stable installation state during long-term high-speed rotation crushing operations, preventing loosening, detachment, or displacement. This ensures the continuous and stable operation of the crushing process, effectively reducing equipment downtime and maintenance due to crushing tooth malfunctions, lowering equipment maintenance costs, and guaranteeing the continuity and stability of production. This lays a solid foundation for producing plastic particle products with uniform particle size and stable quality.

[0015] In this invention, the detachable design of the overall crushing device greatly facilitates equipment maintenance and repair. The retaining ring on the crushing shaft is secured by a convenient snap-fit ​​mechanism between the retaining head and the ring groove. The retaining ring is composed of two halves joined together, allowing for quick and easy installation and removal. When the crushing teeth need replacement due to wear from long-term use, the operator simply uses the lifting clip on the front of the retaining ring (whose anti-slip texture further facilitates operation) to easily remove the retaining ring from the crushing shaft, quickly completing the replacement of the crushing teeth. This eliminates the need for complex welding or bolt disassembly as with traditional equipment. This not only significantly shortens equipment maintenance time and reduces the impact of equipment downtime on production schedules, but also lowers the requirements for maintenance personnel's professional skills and tools, improving the overall maintainability and utilization rate of the equipment. This allows companies to more flexibly arrange production and equipment maintenance plans, effectively improving the efficiency and effectiveness of production operations. Attached Figure Description

[0016] Figure 1 This is a structural diagram of the overall appearance of this utility model;

[0017] Figure 2 This is a top view of the pulverizing box of this utility model;

[0018] Figure 3 This is a diagram showing the mounting structure of the retaining ring of this utility model;

[0019] Figure 4 This is a structural diagram of the crushing shaft of this utility model;

[0020] Figure 5 This is a structural diagram of the retaining ring of this utility model;

[0021] Figure 6 This is a structural diagram of the bottom of the chipper tooth of this utility model;

[0022] Figure 7This is a schematic diagram of the outer surface of the retaining ring of this utility model;

[0023] Figure 8 This is a schematic diagram of the interior of the cavity of this utility model.

[0024] Legend:

[0025] 1. Crushing box; 2. Feed hopper; 3. Receiving frame; 4. Crushing shaft; 5. Drive motor; 6. Snap ring; 7. Crushing teeth; 8. Drive shaft; 9. Ring groove; 10. Snap hole; 11. Snap head; 12. Lifting block; 13. Connector; 14. Limiting post; 15. First ladder seat; 16. Connecting shaft; 17. Second ladder seat; 18. Mounting block; 19. Spring post; 20. Interface; 21. Limiting insertion hole; 22. Inner cavity; 23. Telescopic spring; 24. Blocking block; 25. Slide groove; 26. Snap groove; 27. Support plate. Detailed Implementation

[0026] To make the technical means, creative features, and achieved objectives and effects of this utility model easier to understand, the present utility model is further described below with reference to specific embodiments and accompanying drawings. However, the following embodiments are merely preferred embodiments of this utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments described in the implementation plan without creative effort are all within the protection scope of this utility model.

[0027] The specific embodiments of this utility model are described below with reference to the accompanying drawings. Specific Implementation Example 1:

[0029] Reference Figure 1-8 A raw material crushing device for processing plastic particles includes a crushing box 1, a feeding hopper 2 is snapped into the bottom of the crushing box 1, a receiving frame 3 is placed at the bottom of the feeding hopper 2, a drive motor 5 is installed on both sides of the crushing box 1, a drive shaft 8 is driven to one side of the drive motor 5, one end of the drive shaft 8 passes through the interior of the crushing box 1, a crushing shaft 4 is installed on the outside of the drive shaft 8, a ring groove 9 is opened on the outside of the crushing shaft 4, a ring hole 10 is arranged in a ring array in the ring groove 9, and a retaining ring 6 is snapped into the ring groove 9.

[0030] In this structure, the entire crushing device is detachable for easy replacement, such as... Figure 4 As shown, a retaining ring 6 is installed in each groove 9 outside the crushing shaft 4.

[0031] The front of the retaining ring 6 is fitted with a lifting block 12, and the inside of the retaining ring 6 has a ring array of retaining heads 11. The retaining heads 11 and the retaining holes 10 are engaged with each other and adapted to each other.

[0032] like Figure 5Each complete retaining ring 6 shown is composed of two half-sets of retaining rings 6 spliced ​​together, which makes it easy to install in the ring groove 9. At the same time, the surface of the lifting block 12 on the front of the retaining ring 6 is provided with anti-slip texture. The lifting block 12 is for easy removal of the retaining ring 6. Each complete retaining ring 6 is equipped with eight sets of teeth 7 on the outside. It should be noted that there are no restrictions on the shape and size of the teeth 7 here, and they can be set according to the actual situation.

[0033] The surface of the retaining ring 6 has an array of interfaces 20 in a ring. The outer side of the interfaces 20 has an array of limit holes 21. The retaining ring 6 has an inner cavity 22, which is connected to the interfaces 20. The bottom of the inner cavity 22 has two sides of a sliding groove 25, and the bottom of the inner cavity 22 has a retaining groove 26 in the middle. The inner sides of the sliding grooves 25 are slidably connected to the inside of the sliding grooves 25. The top of the support plate 27 is embedded with a blocking block 24. The blocking block 24 is slidably connected to the inner wall of the inner cavity 22. A telescopic spring 23 is connected to one side of the blocking block 24. The end of the telescopic spring 23 is connected to the side wall of the inner cavity 22. The blocking block 24 is trapezoidal in shape.

[0034] Each interface 20 has an inner cavity 22. The blocking block 24 in the inner cavity 22 is itself limited by the inner cavity 22 and its bottom is limited by the support plate 27, so it will not loosen or swing, but will only extend and retract left and right.

[0035] The bottom of the tooth 7 is connected to a connector 13, and a first ladder seat 15 is installed at the bottom of the connector 13. Limiting posts 14 are threadedly connected to both sides, front and back of the first ladder seat 15. The limiting posts 14 are L-shaped and are engaged with the limiting holes 21. A connecting shaft 16 is connected to the middle of the bottom end of the connector 13. A second ladder seat 17 is installed at the bottom end of the connecting shaft 16. Both the first ladder seat 15 and the second ladder seat 17 are frustum-shaped. The first ladder seat 15 and the second ladder seat 17 are opposite and mirror images of each other. An installation block 18 is embedded at the bottom end of the second ladder seat 17. A spring post 19 is connected to the bottom end of the installation block 18. The bottom end of the spring post 19 is engaged with the slot 26 in the inner cavity 22.

[0036] The bottom structure of the tooth 7 is for installation into the inner cavity 22. It should be noted that the mounting block 18 and the spring post 19 are initially installed in the middle of the inner cavity 22. At the same time, the internal connection between the shaft 16 and the first ladder seat 15 is threaded. After installation, the tooth 7, the connector 13 and the first ladder seat 15 are on the surface of the interface 20. The end of the limiting post 14 on the outside of the first ladder seat 15 will be inserted into the limiting socket 21, so that the first ladder seat 15 will be fixed and will not easily loosen. Specific Implementation Example 2:

[0038] Reference Figure 1-8During installation, the toothed component 7 is first aligned with the mounting block 18 and spring post 19 at the entrance of the inner cavity 22 of the retaining ring 6. The spring post 19 is gently placed into the inner cavity 22, at which point it is uncompressed, and the mounting block 18 is located near the center of the inner cavity 22. Next, holding the toothed component 7, the connecting shaft 16 is threaded onto the first ladder seat 15, ensuring a secure connection. Then, the toothed component 7, with the connected first ladder seat 15 and connecting shaft 16, is brought closer to the retaining ring 6, aligning the first ladder seat 15 with the interface 20. During this process, the second ladder seat 17 gradually enters the inner cavity 22. Because the top of the second ladder seat 17 is larger than its bottom, it contacts the trapezoidal blocking blocks 24 on both sides when it enters the inner cavity 22. As the second ladder seat 17 continues to descend, it will press against the blocking block 24. After being pressed, the blocking block 24 slides to both sides along the groove 25 of the inner cavity 22, while stretching the telescopic spring 23 connected to it. When the second ladder seat 17 has completely passed the blocking block 24, under the restoring force of the telescopic spring 23, the blocking block 24 returns to its original position. At this time, the blocking block 24 is located below the second ladder seat 17, thus blocking the second ladder seat 17 and preventing it from being easily pulled out. Finally, the limiting post 14 on the outside of the first ladder seat 15 is rotated and its end is inserted into the limiting socket 21 to further fix the position of the first ladder seat 15, ensuring that the tooth 7, the connector 13 and the first ladder seat 15 are stably placed on the surface of the interface 20, thus completing the installation of the tooth 7.

[0039] During disassembly, firstly, unscrew and remove the limiting post 14 from the limiting insertion hole 21 on the outside of the first ladder seat 15. Then, insert the removed limiting post 14 into the opening of the inner cavity 22 of the retaining ring 6. At this time, the limiting post 14 will contact the blocking block 24 in the inner cavity 22. Due to the pushing action of the limiting post 14, the blocking block 24 will slide along the slide groove 25 to both sides, thereby opening the blocking blocks 24 on both sides. Finally, with the blocking blocks 24 opened, pull the tooth 7 upward as a whole, so that the second ladder seat 17 is disengaged from the blocking block 24. Then, remove the tooth 7 from the interface 20 to complete the disassembly of the tooth 7.

[0040] In summary:

[0041] 1. In this device, the surface of the retaining ring 6 has an interface 20 in a ring array. The interface 20 has a limit hole 21 in a ring array outside. The retaining ring 6 has an inner cavity 22 inside. The inner cavity 22 and the interface 20 are connected. The bottom of the inner cavity 22 has a sliding groove 25 on both sides. The bottom of the inner cavity 22 has a retaining groove 26 in the middle. The inner sides of the sliding groove 25 are slidably connected to the support plate 27. The top of the support plate 27 is embedded with a blocking block 24. The blocking block 24 is slidably connected to the inner wall of the inner cavity 22. A telescopic spring 23 is connected to one side of the blocking block 24. The end of the telescopic spring 23 is connected to the side wall of the inner cavity 22. The blocking block 24 is trapezoidal in shape.

[0042] Each interface 20 has an inner cavity 22. The blocking block 24 in the inner cavity 22 is itself limited by the inner cavity 22 and its bottom is limited by the support plate 27, so it will not loosen or swing, but will only extend and retract left and right.

[0043] 2. When installing the toothed component 7, first align the mounting block 18 and spring post 19 with the entrance of the inner cavity 22 of the retaining ring 6. Gently place the spring post 19 into the inner cavity 22. At this time, the spring post 19 is in an uncompressed state, and the mounting block 18 is located near the middle of the inner cavity 22. Next, holding the toothed component 7, thread the connecting shaft 16 to the first ladder seat 15 to ensure a firm connection. Then, move the toothed component 7, with the connected first ladder seat 15 and connecting shaft 16, towards the retaining ring 6, aligning the first ladder seat 15 with the interface 20. During this process, the second ladder seat 17 gradually enters the inner cavity 22. Since the top of the second ladder seat 17 is larger than the bottom, it will contact the trapezoidal blocking blocks 24 on both sides when it enters the inner cavity 22. As the second step 17 continues to descend, it will compress the blocking block 24. After being compressed, the blocking block 24 slides to both sides along the groove 25 of the inner cavity 22, while stretching the extension spring 23 connected to it. When the second step 17 has completely passed the blocking block 24, the blocking block 24 returns to its original position under the restoring force of the extension spring 23. At this time, the blocking block 24 is located below the second step 17, thus blocking the second step 17 and preventing it from being easily pulled out.

[0044] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0045] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A raw material pulverizing device for plastic particle processing, comprising a pulverizing box (1), characterized in that: The bottom of the crushing box (1) is clamped with a lower hopper (2), the bottom of the lower hopper (2) is placed with a receiving frame (3), both sides of the crushing box (1) are provided with a driving motor (5), one side of the driving motor (5) is transmissionally connected with a driving shaft (8), one end of the driving shaft (8) penetrates the inside of the crushing box (1), the outside of the driving shaft (8) is provided with a crushing shaft (4), the outside of the crushing shaft (4) is provided with a ring groove (9), the ring groove (9) is annularly arrayed with a clamping hole (10), the ring groove (9) is clamped with a clamping ring (6), the surface of the clamping ring (6) is annularly arrayed with a connector (20), the outside of the connector (20) is annularly arrayed with a limiting jack (21), the inside of the clamping ring (6) is provided with an inner cavity (22).

2. The raw material pulverizing device for plastic particle processing according to claim 1, characterized in that: The front surface of the clamping ring (6) is embedded with a lifting buckle (12), the inside of the clamping ring (6) is annularly arrayed with a clamping head (11), the clamping head (11) and the clamping hole (10) are clamped with each other and are matched with each other.

3. The raw material pulverizing device for plastic particle processing according to claim 1, characterized in that: The inner cavity (22) and the connector (20) are communicated.

4. The raw material pulverizing device for plastic particle processing according to claim 1, characterized in that: Both sides of the bottom of the inner cavity (22) are provided with a sliding groove (25), the middle of the bottom end of the inner cavity (22) is provided with a clamping groove (26), the inside of both sides of the sliding groove (25) is slidably connected with a supporting plate (27).

5. The raw material pulverizing device for plastic particle processing according to claim 4, characterized in that: The top of the supporting plate (27) is embedded with a blocking block (24), the blocking block (24) and the inner wall of the inner cavity (22) are slidably connected, one side of the blocking block (24) is connected with a telescopic spring (23), the end of the telescopic spring (23) and the side wall of the inner cavity (22) are connected, the shape of the blocking block (24) is trapezoidal.

6. The raw material pulverizing device for plastic particle processing according to claim 5, characterized in that: The outside of the clamping ring (6) is provided with a crushing tooth (7), the bottom of the crushing tooth (7) is connected with a connector (13), the bottom of the connector (13) is provided with a first ladder seat (15), both sides and the front and back surfaces of the outside of the first ladder seat (15) are threadedly connected with a limiting column (14), the shape of the limiting column (14) is L-shaped, the limiting column (14) and the limiting jack (21) are clamped with each other and are matched with each other.

7. The raw material pulverizing device for plastic particle processing according to claim 6, characterized in that: The middle of the bottom end of the connector (13) is connected with a connecting shaft (16), the bottom end of the connecting shaft (16) is provided with a second ladder seat (17), the shapes of the first ladder seat (15) and the second ladder seat (17) are both circular truncated cone-shaped, the first ladder seat (15) and the second ladder seat (17) are opposite and are mirror corresponding, the bottom end of the second ladder seat (17) is embedded with a mounting block (18), the bottom end of the mounting block (18) is connected with a spring column (19), the bottom end of the spring column (19) and the clamping groove (26) in the inner cavity (22) are clamped with each other.

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