A granulator for plastic production

Abstract

This utility model discloses a granulator for plastic production, relating to the field of recycled polyethylene production technology. The granulator includes a granulation worktable and a telescopic cutter assembly. The telescopic cutter assembly includes a support frame, a first hydraulic cylinder, a lifting assembly, a third hydraulic cylinder, a fixed cutter head, a telescopic cutter head, a telescopic blade, and a fixed blade. The support frame is fixedly connected to the top of the granulation worktable. Multiple first hydraulic cylinders are fixedly connected to the top of the support frame. The lifting assembly is fixedly connected to the output end of the first hydraulic cylinders. Multiple third hydraulic cylinders are fixedly connected to the top of the lifting assembly. The fixed cutter head is fixedly connected to the bottom of the lifting assembly. The telescopic cutter head is slidably connected inside the fixed cutter head. Through the multi-stage hydraulic drive design of the telescopic cutter assembly, the coordinated cutting of the fixed blade and the telescopic blade is achieved, meeting the processing requirements of plastic granules of different sizes.

Description

Technical Field

[0001] This utility model relates to the field of recycled polyethylene production technology, and in particular to a granulator for plastic production. Background Technology

[0002] Recycled polyethylene refers to granular plastics made from recycled polyethylene materials. It is mainly used to manufacture various plastic products. Recycled PE materials can be used to manufacture various plastic bags, stationery, buttons, zippers and other household items, as well as plastic building tools, plastic doors and windows, mortar buckets and so on. In agriculture, recycled PE materials are also widely used in agricultural films, water pipes, agricultural machinery and fertilizer packaging bags and other agricultural implements.

[0003] Recycled polyethylene is generally in granular form. In the production of recycled polyethylene, a granulator is usually required. During the production of recycled polyethylene, the molten polyethylene raw material is extruded, and the extruded strips of recycled polyethylene are cooled and then transferred to the granulator for cutting. In the existing technology, plastic granulation equipment generally has the limitation of a single cutting specification, while models with size adjustment function often require changing the blade assembly to switch specifications, which makes the operation process cumbersome and affects the production efficiency. Therefore, a granulator for plastic production is needed. Utility Model Content

[0004] The purpose of this utility model is to solve at least one of the technical problems existing in the prior art, and to provide a granulator for plastic production that can solve the problem that existing equipment generally has the limitation of a single cutting specification, and that size adjustment requires changing the blade assembly to achieve specification switching, which leads to a cumbersome operation process and affects production efficiency.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a granulator for plastic production, comprising a granulation worktable and a telescopic cutter assembly. The telescopic cutter assembly includes a device support, a first hydraulic cylinder, a lifting assembly, a third hydraulic cylinder, a fixed cutter head, a telescopic cutter head, a telescopic blade, and a fixed blade. The device support is fixedly connected to the top of the granulation worktable. Multiple first hydraulic cylinders are fixedly connected to the top of the device support. The lifting assembly is fixedly connected to the output end of the first hydraulic cylinder. Multiple third hydraulic cylinders are fixedly connected to the top of the lifting assembly. The fixed cutter head is fixedly connected to the bottom of the lifting assembly. The telescopic cutter head is slidably connected inside the fixed cutter head. The top of the telescopic cutter head is fixedly connected to the output end of the third hydraulic cylinder. Multiple telescopic blades are equidistantly fixedly connected to the bottom of the telescopic cutter head in a linear array. Each telescopic blade is slidably connected to the fixed cutter head. Multiple fixed blades are equidistantly fixedly connected to the bottom of the fixed cutter head in a linear array.

[0006] Preferably, the top of the granulation workbench is fixedly connected to two fixing plates, and a second hydraulic cylinder is fixedly connected to the surface of each of the two fixing plates. A clamping plate is fixedly connected to the output end of each of the two second hydraulic cylinders.

[0007] Preferably, a limiting plate is fixedly connected to the top of the granulation workbench, a cutting base is slidably connected to the top of the granulation workbench, and a cutting blade holder is fixedly connected to the top of the cutting base.

[0008] Preferably, the top of the cutting blade holder is provided with multiple placement slots at equal intervals, and the top of both the cutting blade holder and the placement slots are provided with multiple cutting openings at equal intervals.

[0009] Preferably, two connecting water pipes are fixedly connected to the surface of the cutting base, and two circulating water pipes are fixedly connected to the top of the granulation workbench. Both circulating water pipes are connected to the corresponding connecting water pipe flanges.

[0010] Preferably, a water tank is fixedly connected to the bottom of the granulation workbench, and two circulating water pipes are evenly connected to the inside of the water tank.

[0011] Preferably, the cutting base has a cooling circulation groove inside, and both connecting water pipes are connected to the inside of the cooling circulation groove.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. This plastic granulator, through a multi-stage hydraulic drive design of the telescopic cutter assembly, achieves coordinated cutting of fixed and telescopic blades, meeting the processing needs of plastic granules of different sizes. It solves the problem that existing equipment generally has the limitation of a single cutting specification, and size adjustment requires changing the blade assembly to switch specifications, resulting in a cumbersome operation process and affecting production efficiency. The modular cooperation between the clamping plate and the cutting base ensures cutting stability and facilitates disassembly and maintenance. The circulating water cooling system effectively reduces the blade temperature through the closed-loop design of the cooling flow channel and water tank, preventing plastic from melting and sticking. The integrated structure of the cutting blade holder placement slot and the cutting edge improves the uniformity of granule forming. The overall structure takes into account both processing accuracy and equipment maintainability. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0015] Figure 1 This is a schematic diagram of the main body of this utility model;

[0016] Figure 2 This is a schematic diagram of the cutting base of this utility model;

[0017] Figure 3 This is a schematic diagram of the cutting blade holder of this utility model;

[0018] Figure 4 This is a schematic diagram of the telescopic cutter head of this utility model.

[0019] Reference numerals: 1. Granulation workbench; 2. Device support; 3. First hydraulic cylinder; 4. Lifting assembly; 5. Fixing plate; 6. Clamping plate; 7. Second hydraulic cylinder; 8. Limiting plate; 9. Cutting base; 10. Circulating water pipe; 11. Connecting water pipe; 12. Cooling flow channel; 13. Cutting blade holder; 14. Placement slot; 15. Cutting opening; 16. Third hydraulic cylinder; 17. Fixed blade head; 18. Telescopic blade head; 19. Telescopic blade; 20. Fixed blade; 21. Water tank. Detailed Implementation

[0020] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0021] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] In the description of this utility model, terms such as greater than, less than, and exceeding are understood to exclude the stated number, while terms such as above, below, and within are understood to include the stated number. The use of terms like "first" and "second" is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the quantity or sequence of the indicated technical features.

[0023] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0024] Please see Figure 1-4This utility model provides a technical solution: a granulator for plastic production, including a granulation worktable 1 and a telescopic cutter assembly. The telescopic cutter assembly includes a device support 2, a first hydraulic cylinder 3, a lifting assembly 4, a third hydraulic cylinder 16, a fixed cutter head 17, a telescopic cutter head 18, a telescopic cutter blade 19, and a fixed cutter blade 20. The device support 2 is fixedly connected to the top of the granulation worktable 1. Multiple first hydraulic cylinders 3 are fixedly connected to the top of the device support 2. The lifting assembly 4 is fixedly connected to the output end of the first hydraulic cylinders 3. The number of third hydraulic cylinders 16... Multiple telescopic blades 17 are fixedly connected to the top of the lifting assembly 4. A fixed blade head 17 is fixedly connected to the bottom of the lifting assembly 4. A telescopic blade head 18 is slidably connected to the inside of the fixed blade head 17. The top of the telescopic blade head 18 is fixedly connected to the output end of the third hydraulic cylinder 16. Multiple telescopic blades 19 are equidistantly fixedly connected to the bottom of the telescopic blade head 18 in a linear array. Each telescopic blade 19 is slidably connected to the fixed blade head 17. Multiple fixed blades 20 are equidistantly fixedly connected to the bottom of the fixed blade head 17 in a linear array.

[0025] Furthermore, the top of the granulation workbench 1 is fixedly connected to two fixed plates 5, and the surfaces of the two fixed plates 5 are fixedly connected to second hydraulic cylinders 7. The output ends of the two second hydraulic cylinders 7 are fixedly connected to clamping plates 6. The top of the granulation workbench 1 is fixedly connected to a limit plate 8. The top of the granulation workbench 1 is slidably connected to a cutting base 9. The top of the cutting base 9 is fixedly connected to a cutting blade holder 13. The top of the cutting blade holder 13 is provided with multiple placement slots 14 at equal intervals. The tops of the cutting blade holder 13 and the placement slots 14 are provided with multiple cutting holes 15 at equal intervals. The surface of the cutting base 9 is fixedly connected to two connecting water pipes 11. The top of the granulation workbench 1 is fixedly connected to two circulating water pipes 10. The two circulating water pipes 10 are connected to the flanges of the corresponding connecting water pipes 11. The bottom of the granulation workbench 1 is fixedly connected to a water tank 21. The two circulating water pipes 10 are evenly connected to the interior of the water tank 21. The interior of the cutting base 9 is provided with a cooling flow channel 12. The two connecting water pipes 11 are connected to the interior of the cooling flow channel 12.

[0026] Furthermore, the working principle of the plastic granulator is as follows: the first hydraulic cylinder 3 drives the lifting assembly 4 to press down the fixed blade head 17 as a whole. The fixed blade 20 cooperates with the cutting opening 15 to complete the cutting of the plastic strip. When different sizes need to be cut, the third hydraulic cylinder 16 pushes the telescopic blade head 18 to make the telescopic blade 19 slide along the inner cavity of the fixed blade head 17. The telescopic blade 19 and the fixed blade 20 are aligned to achieve a shorter length of plastic granules. The second hydraulic cylinder 7 drives the clamping plate 6 to clamp the cutting base 9 to ensure cutting stability and to make the cutting base 9 detachable for easy maintenance. At the same time, the circulating water pipe 10 circulates water to cool the cutting base 9 through the cooling circulation groove 12 to prevent the plastic from melting and sticking to the blade. The water tank 21 is equipped with a circulating water pump that can realize the circulation of coolant. The cut granules are discharged through the placement groove 14.

[0027] Furthermore, this plastic granulator utilizes a multi-stage hydraulic drive design for the telescopic cutter assembly to achieve coordinated cutting of fixed and telescopic blades, meeting the processing needs of plastic granules of different sizes. This solves the limitations of existing equipment that typically only offers a single cutting specification, requiring size adjustments through replacement of the blade assembly, which leads to cumbersome operation and reduced production efficiency. The modular design of the clamping plate and cutting base ensures cutting stability while facilitating disassembly and maintenance. The circulating water cooling system effectively reduces blade temperature and prevents plastic melting and sticking through a closed-loop design of the cooling flow channel and water tank. The integrated structure of the cutting blade holder's placement slot and cutting edge improves the uniformity of granule formation. The overall structure balances processing accuracy and equipment maintainability.

[0028] Structural Description: Granulation Workbench 1: As the core load-bearing platform of the whole machine, it provides a stable working foundation for the plastic granulation process, and integrates multiple functions such as cutting, cooling, and conveying into one unit;

[0029] Device bracket 2: A rigid support frame that forms the cutter assembly, ensuring the structural stability of the first hydraulic cylinder and the lifting assembly during high-speed cutting through high-strength connections;

[0030] First hydraulic cylinder 3: As the main driving power source, it realizes the overall downward movement of the lifting assembly through precise hydraulic control, providing constant pressure output for the cutting operation;

[0031] Lifting component 4: As a transmission intermediary mechanism, it converts the linear motion of the hydraulic cylinder into the vertical displacement of the cutting blade assembly, and at the same time bears the combined force of multiple hydraulic cylinders.

[0032] Fixed plate 5: Fixed base installed on both sides of the granulation workbench, providing a rigid mounting surface for the hydraulic cylinder of the clamping mechanism to ensure uniform distribution of clamping force;

[0033] Clamping plate 6: The adjustable clamping of the cutting base is achieved by hydraulic drive, which can not only ensure the stability of the cutting process, but also facilitate quick disassembly during equipment maintenance;

[0034] Second hydraulic cylinder 7: As the power element of the clamping mechanism, it outputs controllable clamping force to eliminate the influence of cutting vibration on the molding quality of plastic granules;

[0035] Limiting plate 8: A mechanical stop set on the edge of the granulation workbench to limit the travel of the cutting base and prevent positional deviation during operation;

[0036] Cutting base 9: As a mobile cutting platform, it achieves continuous cooling of the cutting tool through the cooperation of internal cooling channels and external water circulation system;

[0037] Circulating water pipe 10: The main pipe that forms a closed cooling loop, efficiently transporting the coolant in the water tank to each heat dissipation node in the cutting area;

[0038] Water pipe 11: As a flexible connecting component, it keeps the cooling pipe unobstructed when the cutting base moves, and at the same time compensates for the positional deviation when the equipment is running;

[0039] Cooling flow channel 12: A three-dimensional cooling network formed inside the cutting base, which significantly reduces the working temperature of the tool by increasing the heat exchange area;

[0040] Cutting blade holder 13: As a special fixture that directly supports plastic strips, its multi-slot design can adapt to the parallel cutting needs of raw materials of different specifications.

[0041] Placement groove 14: Precision-machined flow channel to ensure that the cut plastic granules are discharged in an orderly manner and to avoid collision and damage between the granules;

[0042] Cutting 15: A precision opening that forms a shearing engagement with the cutting blade assembly; its array-like layout enables efficient segmented cutting of plastic strips.

[0043] The third hydraulic cylinder 16 serves as the power source for fine-tuning the telescopic cutter, and adjusts the blade extension length through precise stroke control.

[0044] Fixed cutter head 17: forms the main frame of the cutter assembly, with an integrated sliding guide rail to ensure the linear motion accuracy of the telescopic cutter head;

[0045] Telescopic cutter head 18: A modularly designed movable cutting unit that adjusts the working state of the cutting edge via hydraulic drive;

[0046] Telescopic blade 19: Adjustable high-hardness cutting edge, whose linear array layout facilitates the cutting of plastic particles of different sizes;

[0047] Fixed cutting edge 20: As a reference cutting element, it forms a composite cutting system with the telescopic cutting edge, improving adaptability to different processing requirements;

[0048] Water tank 21: A coolant storage tank with an integrated circulating pump, which maintains the optimal operating temperature range of the cooling medium through an intelligent temperature control system.

[0049] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A granulator for plastic production, characterized by, include: Granulation workbench (1); The telescopic cutter assembly includes a device bracket (2), a first hydraulic cylinder (3), a lifting assembly (4), a third hydraulic cylinder (16), a fixed cutter head (17), a telescopic cutter head (18), a telescopic blade (19), and a fixed blade (20). The device bracket (2) is fixedly connected to the top of the granulation workbench (1). Multiple first hydraulic cylinders (3) are fixedly connected to the top of the device bracket (2). The lifting assembly (4) is fixedly connected to the output end of the first hydraulic cylinders (3). Multiple third hydraulic cylinders (16) are fixedly connected to the top of the lifting assembly (2). 4) At the top, the fixed cutter head (17) is fixedly connected to the bottom of the lifting assembly (4), the telescopic cutter head (18) is slidably connected to the inside of the fixed cutter head (17), the top of the telescopic cutter head (18) is fixedly connected to the output end of the third hydraulic cylinder (16), the number of telescopic blades (19) is multiple and is equidistantly fixedly connected to the bottom of the telescopic cutter head (18) in a linear array, each telescopic blade (19) is slidably connected to the fixed cutter head (17), and the number of fixed blades (20) is multiple and is equidistantly fixedly connected to the bottom of the fixed cutter head (17) in a linear array.

2. The granulator for plastic production according to claim 1, characterized in that: The top of the granulation workbench (1) is fixedly connected to two fixing plates (5), and the surfaces of the two fixing plates (5) are fixedly connected to second hydraulic cylinders (7), and the output ends of the two second hydraulic cylinders (7) are fixedly connected to clamping plates (6).

3. The granulator for plastic production according to claim 1, characterized in that: The top of the granulation workbench (1) is fixedly connected to a limiting plate (8), and the top of the granulation workbench (1) is slidably connected to a cutting base (9), and the top of the cutting base (9) is fixedly connected to a cutting knife holder (13).

4. A granulator for plastic production according to claim 3, characterized in that: The top of the cutting blade holder (13) is provided with multiple placement slots (14) at equal intervals, and the top of both the cutting blade holder (13) and the placement slots (14) are provided with multiple cutting openings (15) at equal intervals.

5. A granulator for plastic production according to claim 3, characterized in that: Two connecting water pipes (11) are fixedly connected to the surface of the cutting base (9), and two circulating water pipes (10) are fixedly connected to the top of the granulation workbench (1). Both circulating water pipes (10) are connected to the flanges of the corresponding connecting water pipes (11).

6. A granulator for plastic production according to claim 5, characterized in that: A water tank (21) is fixedly connected to the bottom of the granulation workbench (1), and two circulating water pipes (10) are evenly connected to the inside of the water tank (21).

7. A granulator for plastic production according to claim 5, characterized in that: The cutting base (9) has a cooling circulation groove (12) inside, and the two connecting water pipes (11) are connected to the inside of the cooling circulation groove (12).

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