A modified plastic pelletizing device

Abstract

This utility model discloses a modified plastic pelletizing device, relating to the field of plastic pelletizing. It includes a main body with a feeding auxiliary mechanism on its top and a cutting mechanism inside the upper part of the main body. The cutting mechanism includes a rotating roller with a connecting groove. A rotating cutter is placed inside the connecting groove. Two fixed discs are fixed to the rotating roller, and connecting buckles are rotatably connected to the fixed discs. One end of the connecting buckle is bolted to the rotating cutter. A maintenance auxiliary mechanism is located on the rear top of the main body. The maintenance auxiliary mechanism includes a sliding bracket, on which the rotating roller is mounted. A fixed rear cover is located on the top of the sliding bracket. The advantages are: by integrally molding the rotating cutter assembly, the rotating cutter and rotating roller are separated and installed. This allows for grinding or replacement operations targeting only the rotating cutter. Furthermore, by changing the connection state between the rotating cutter assembly and the equipment, the rotating cutter assembly is quickly exposed, facilitating maintenance.

Description

Technical Field

[0001] This utility model relates to the field of plastic pelletizing, and in particular to a modified plastic pelletizing device. Background Technology

[0002] Plastic modification is a broad concept. It encompasses any improvement or enhancement of the original properties of resin through physical, chemical, or mechanical means. The application range of plastic modification is extensive; in fact, it can be said that any plastic can have its quality improved through modification methods, such as density, hardness, precision, appearance, processability, transparency, mechanical properties, electromagnetic properties, chemical properties, corrosion resistance, aging resistance, wear resistance, thermal properties, flame retardancy, barrier properties, and cost-effectiveness. Plastic modification is the most effective method for reducing costs and improving performance. The cutting blade of a modified plastic pelletizing equipment consists of two parts: a rotating blade and a fixed blade. The blade distance is controlled by the position of the fixed blade, making adjustment convenient. The rotating blade is a carbide roller.

[0003] For example, patent document CN221809367U discloses a modified plastic pelletizing device, which includes: a motor A fixedly connected to the right surface of the outer shell, a rotating shaft fixedly connected to the output end of the motor A, a cutting wheel fixedly connected to the side surface of the rotating shaft, and the cutting wheel having blade teeth on its side surface; a telescopic column fixedly connected to the upper surface of the base plate, a motor B fixedly connected to the upper end of the telescopic column, a rotating shaft fixedly connected to the output end of the motor B, and a grinding barrel movably connected to the side surface of the rotating shaft, with limit holes provided on the grinding barrel. This device is beneficial for improving the surface smoothness and particle size uniformity of the pellets, thereby improving the quality and performance of the product.

[0004] In the existing technology, after the device has been working for a period of time, it is necessary to maintain the device in order to ensure the cutting effect. This mainly involves grinding or replacing the rotary blade and the fixed blade. However, since the rotary blade is generally integrally formed, its maintenance is difficult and the replacement cost is high. In addition, since the rotary blade is large in size and stably installed on the device, the maintenance of the rotary blade usually requires disassembling the device, which is troublesome. Utility Model Content

[0005] The purpose of this invention is to provide a modified plastic pelletizing device to solve the above-mentioned problems.

[0006] This utility model achieves the above objectives through the following technical solutions:

[0007] A modified plastic pelletizing device includes a main body, a feeding auxiliary mechanism on the top of the main body, and a cutting mechanism inside the upper part of the main body. The cutting mechanism includes a fixed blade and a rotating blade assembly. The rotating blade assembly includes a rotating roller with several connecting grooves. A rotating blade is slidably connected to each connecting groove. Two symmetrically arranged fixed discs are fixedly connected to the rotating roller. Several connecting buckles are rotatably connected to the fixed discs. One end of each connecting buckle is bolted to the rotating blade. A maintenance auxiliary mechanism is located on the rear top of the main body. The maintenance auxiliary mechanism includes a sliding bracket. The rotating roller is mounted on the sliding bracket. L-shaped cavities are provided on the left and right sides of the rear end of the sliding bracket. A fixed piston rod is slidably and sealed at the rear end of the L-shaped cavity on the sliding bracket. A sliding piston rod is slidably and sealed at the upper end of the L-shaped cavity on the sliding bracket. A fixed rear cover is rotatably connected to the top of the sliding piston rod. Hydraulic oil is filled into the L-shaped cavity on the sliding bracket.

[0008] Preferably, the main body of the equipment includes a main support frame, several casters are installed at the bottom of the main support frame, a discharge hopper is fixedly connected inside the main support frame, a motor is fixedly connected to the lower end of the main support frame, a drive pulley is fixedly connected to the output end of the motor, a fixed support frame is fixedly connected to the top of the main support frame, a feed roller is rotatably connected to the front end of the fixed support frame, a driven pulley is fixedly connected to one end of the feed roller, the driven pulley and the drive pulley are connected by a synchronous belt, and the fixed blade is fixedly connected to the fixed support frame.

[0009] Preferably, the feeding auxiliary mechanism includes a clamping lever rotatably connected to the top of the fixed bracket, a clamping roller rotatably connected to the lower side of the clamping lever, the clamping roller and the feeding roller being symmetrically arranged, two symmetrically arranged spring telescopic rods rotatably connected to both sides of the clamping lever, the other end of the spring telescopic rods being rotatably connected to the fixed bracket, a front guard plate rotatably connected to the front side of the fixed bracket, a feeding hopper being fixedly connected to the front guard plate, and the other end of the front guard plate being connected to the fixed bracket by bolts.

[0010] Preferably, two symmetrically arranged bearings are installed at both ends of the rotating roller, and arc-shaped grooves are provided at corresponding positions on the sliding bracket and the fixed back cover, with the bearings fixedly connected in the arc-shaped grooves on the sliding bracket and the fixed back cover.

[0011] Preferably, the sliding bracket is slidably connected to the fixed bracket, the other end of the fixed piston rod is fixedly connected to the main body bracket, and the sliding bracket is fixedly connected to the rear end of the fixed back cover with two symmetrically arranged fixing ears, and the upper and lower fixing ears are fixedly connected by bolts.

[0012] Preferably, a first gear is fixedly connected to the other end of the feed roller, and a second gear is fixedly connected to one end of the rotating roller, with the second gear meshing with the first gear.

[0013] The beneficial effects are as follows: In order to reduce the maintenance and replacement costs of the rotary cutter assembly, the one-piece molding is changed to a separate setting of the rotary cutter and the rotary roller. In this way, whether grinding or replacing the rotary cutter, the operation is only performed on the single rotary cutter, thereby reducing the maintenance difficulty and replacement cost. In addition, the connection state of the rotary cutter assembly and the equipment is changed to achieve quick exposure of the rotary cutter assembly, thereby facilitating maintenance.

[0014] The additional technical features and advantages of this utility model will become more apparent from the following description, or may be learned through specific practice of this utility model. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the following detailed description to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0016] Figure 1 This is a perspective view of a modified plastic pelletizing device according to the present invention;

[0017] Figure 2 This is a front view of a modified plastic pelletizing device according to the present invention;

[0018] Figure 3 This is a left sectional view of a modified plastic pelletizing device according to the present invention;

[0019] Figure 4 This is a perspective view of the maintenance status of the modified plastic pelletizing equipment described in this utility model;

[0020] Figure 5 This is a three-dimensional view of the feeding auxiliary mechanism of the modified plastic pelletizing equipment described in this utility model;

[0021] Figure 6 This is a perspective view showing the relative positions of the cutting mechanism and the maintenance auxiliary mechanism of the modified plastic pelletizing equipment described in this utility model;

[0022] Figure 7 This is a left-side sectional view showing the relative positions of the cutting mechanism and the maintenance auxiliary mechanism of the modified plastic pelletizing equipment described in this utility model;

[0023] Figure 8 This is a right view of the relative position of the connecting groove and the rotating cutter in the modified plastic pelletizing device of this utility model;

[0024] Figure 9 This is a perspective view of the relative positions of the fixed disc and the connecting groove of the modified plastic pelletizing equipment described in this utility model.

[0025] The annotations in the attached figures are explained as follows:

[0026] 101. Main support frame; 102. Unloading hopper; 103. Casters; 104. Motor; 105. Drive pulley; 106. Fixed support frame; 107. Feed roller; 108. Driven pulley; 109. First gear; 201. Pressing lever; 202. Pressing roller; 203. Spring telescopic rod; 204. Front guard plate; 205. Feed hopper; 301. Rotating roller; 302. Bearing; 303. Connecting groove; 304. Rotating cutter; 305. Fixed plate; 306. Connecting buckle; 307. Fixed blade; 308. Second gear; 401. Sliding support frame; 402. Fixed piston rod; 403. Sliding piston rod; 404. Fixed lug; 405. Fixed rear cover. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0028] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation 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.

[0029] The present invention will be further described below with reference to the accompanying drawings:

[0030] like Figures 1-9As shown, a modified plastic pelletizing device includes a main body, a feeding auxiliary mechanism at the top of the main body, and a cutting mechanism inside the upper part of the main body. The cutting mechanism includes a fixed blade 307 and a rotating blade assembly. The rotating blade assembly includes a rotating roller 301, which has several connecting grooves 303. T-shaped protrusions are provided in the connecting grooves 303. A rotating cutter 304 is slidably connected in the connecting grooves 303. The lower end of the rotating cutter 304 corresponds to the shape of the connecting groove 303. Two symmetrically arranged fixed discs 305 are bolted to the rotating roller 301. The fixed discs 305 are hinged to... Several connecting buckles 306 are connected at one end to the rotating cutter 304 by bolts. A maintenance auxiliary mechanism is provided on the top rear side of the main body of the equipment. The maintenance auxiliary mechanism includes a sliding bracket 401. The rotating roller 301 is mounted on the sliding bracket 401. L-shaped cavities are provided on the left and right sides of the rear end of the sliding bracket 401. A fixed piston rod 402 is slidably and sealingly connected to the rear end of the L-shaped cavity on the sliding bracket 401. A sliding piston rod 403 is slidably and sealingly connected to the upper end of the L-shaped cavity on the sliding bracket 401. A fixed rear cover 405 is rotatably connected to the top of the sliding piston rod 403. The L-shaped cavity is filled with hydraulic oil. To reduce the maintenance and replacement costs of the rotary cutter assembly, the one-piece molding is changed to a separate setting for the rotary cutter 304 and the rotary roller 301. This way, whether grinding or replacing the rotary cutter 304, only the rotary cutter 304 needs to be operated on, thus reducing maintenance difficulty and replacement costs. Furthermore, changing the connection state between the rotary cutter assembly and the equipment allows for quick exposure of the rotary cutter assembly, facilitating maintenance. The operator pulls out the sliding bracket 401, keeping the piston rod 402 stationary during the outward pulling process. The piston rod 402 is then pushed by hydraulic oil. The stopper rod 403 extends outward, and the sliding piston rod 403 drives the fixed back cover 405 to rise, thus separating the fixed back cover 405 from the sliding bracket 401. Then, the worker flips the fixed back cover 405, exposing the rotary cutter assembly for maintenance. When the rotary cutter assembly needs to be polished or replaced, the worker can directly remove it from the sliding bracket 401. Using tools, the two fixed connecting buckles 306 and the bolts of the rotating cutter 304 are removed. After flipping the connecting buckles 306, the rotating cutter 304 can be directly pulled out from the rotating roller 301, thereby polishing or replacing the rotating cutter 304.

[0031] The main body of the equipment includes a main support frame 101, with several casters 103 mounted on the bottom of the main support frame 101. A discharge hopper 102 is bolted to the inside of the main support frame 101. A motor 104 is bolted to the lower end of the main support frame 101. A drive pulley 105 is bolted to the output end of the motor 104. A fixed bracket 106 is bolted to the top of the main support frame 101. A feed roller 107 is rotatably connected to the front end of the fixed bracket 106. A driven belt is bolted to one end of the feed roller 107. Wheel 108, driven pulley 108 and driving pulley 105 are connected by a synchronous belt. Fixed blade 307 is bolted to fixed bracket 106. Motor 104 drives driving pulley 105 to rotate. Driving pulley 105 drives driven pulley 108 to rotate through synchronous belt. Driven pulley 108 drives feed roller 107 to rotate. Feed roller 107 feeds the cooled plastic strip into the space between fixed blade 307 and rotary blade assembly. Under the combined action of rotary blade assembly and fixed blade 307, the plastic strip is cut into granules.

[0032] The feeding auxiliary mechanism includes a clamping lever 201 hinged to the top of the fixed bracket 106. A clamping roller 202 is hinged to the lower side of the clamping lever 201. The clamping roller 202 and the feeding roller 107 are symmetrically arranged. Two symmetrically arranged spring telescopic rods 203 are hinged to both sides of the clamping lever 201. The other end of the spring telescopic rods 203 is hinged to the fixed bracket 106. A front guard plate 204 is hinged to the front side of the fixed bracket 106. A feeding hopper 205 is fixedly connected to the front guard plate 204. The other end of the front guard plate 204 is bolted to the fixed bracket 106. The cooled plastic strip passes through the feeding hopper 205 and enters between the clamping roller 202 and the feeding roller 107. Under the action of the clamping lever 201 and the spring telescopic rods 203, the clamping roller 202 presses against the feeding roller 107. In this way, when the feeding roller 107 rotates, it can feed the plastic strip between the fixed knife 307 and the rotary knife assembly.

[0033] Two symmetrically arranged bearings 302 are installed at both ends of the rotating roller 301. Arc-shaped grooves are provided at corresponding positions on the sliding bracket 401 and the fixed back cover 405. The bearings 302 are fixedly connected in the arc-shaped grooves on the sliding bracket 401 and the fixed back cover 405. The arrangement of the bearings 302 ensures that the rotating roller 301 can rotate smoothly.

[0034] The sliding bracket 401 is slidably connected to the fixed bracket 106. The other end of the fixed piston rod 402 is bolted to the main bracket 101. The sliding bracket 401 and the rear end of the fixed back cover 405 are welded with two symmetrically arranged fixed ears 404. The upper and lower fixed ears 404 are fixedly connected by bolts. The sliding bracket 401 and the fixed back cover 405 are fixed together by the cooperation of the fixed ears 404 and the bolts, and the rotating roller 301 is clamped and positioned in the middle.

[0035] The other end of the feed roller 107 is fixedly connected to the first gear 109, and the one end of the rotating roller 301 is fixedly connected to the second gear 308. The second gear 308 meshes with the first gear 109. The meshing of the two gears realizes the linkage between the feed roller 107 and the rotating roller 301, so that the rotating roller 301 is driven to rotate at the same time as the feed roller 107 rotates.

[0036] Working principle: Motor 104 drives drive pulley 105 to rotate, drive pulley 105 drives driven pulley 108 to rotate via synchronous belt, driven pulley 108 drives feed roller 107 to rotate, feed roller 107 drives first gear 109 to rotate, first gear 109 drives second gear 308 to rotate, second gear 308 drives rotating roller 301 to rotate. Cooled plastic strips pass through feed hopper 205 and enter between pressure roller 202 and feed roller 107. Pressure roller 202 presses against feed roller 107 under the action of pressure lever 201 and spring telescopic rod 203. Thus, when feed roller 107 rotates, it can feed plastic strips between fixed blade 307 and rotating blade assembly. Feed roller 107 feeds the cooled plastic strips between fixed blade 307 and rotating blade assembly. Under the combined action of rotating blade assembly and fixed blade 307, plastic strips are cut into granules. When maintenance is required, the operator pulls out sliding bracket 4. 01. During the outward pulling of the sliding bracket 401, the fixed piston rod 402 remains stationary. Hydraulic oil then pushes the sliding piston rod 403 outward, causing the fixed rear cover 405 to rise. This separates the fixed rear cover 405 from the sliding bracket 401. The worker then flips the fixed rear cover 405, exposing the rotary cutter assembly for maintenance. When grinding or replacing the rotary cutter assembly, the worker can directly remove it from the sliding bracket 401. Using tools, the bolts connecting the two fixed connecting buckles 306 and the rotating cutter 304 are removed. After flipping the connecting buckles 306, the rotating cutter 304 can be directly pulled out from the rotating roller 301 for grinding or replacement. The front guard plate 204 and the clamping lever 201 are then flipped open, exposing the feed roller 107 and the fixed cutter 307, allowing for inspection and maintenance of the feed roller 107 and the fixed cutter 307.

[0037] 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 illustrative of the principles of this 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.

Claims

1. A modified plastic pelletizing device comprising a device body, a top of the device body is provided with a feeding auxiliary mechanism, characterized in that: A cutting mechanism is provided inside the upper part of the main body of the equipment. The cutting mechanism includes a fixed blade (307) and a rotating blade assembly. The rotating blade assembly includes a rotating roller (301). The rotating roller (301) is provided with several connecting grooves (303). A rotating cutter (304) is slidably connected in the connecting grooves (303). Two symmetrically arranged fixed disks (305) are fixedly connected to the rotating roller (301). Several connecting buckles (306) are rotatably connected to the fixed disks (305). One end of each connecting buckle (306) is bolted to the rotating cutter (304). The top of the main body of the equipment... A maintenance auxiliary mechanism is provided on the rear side. The maintenance auxiliary mechanism includes a sliding bracket (401). The rotating roller (301) is installed on the sliding bracket (401). L-shaped cavities are provided on the left and right sides of the rear end of the sliding bracket (401). A fixed piston rod (402) is slidably connected to the rear end of the L-shaped cavity on the sliding bracket (401). A sliding piston rod (403) is slidably connected to the upper end of the L-shaped cavity on the sliding bracket (401). A fixed rear cover (405) is rotatably connected to the top of the sliding piston rod (403). Hydraulic oil is filled into the L-shaped cavity on the sliding bracket (401).

2. The modified plastic pelletizing apparatus of claim 1, wherein: The main body of the equipment includes a main support frame (101), a number of casters (103) are installed at the bottom of the main support frame (101), a discharge hopper (102) is fixedly connected inside the main support frame (101), a motor (104) is fixedly connected at the lower end of the main support frame (101), a drive pulley (105) is fixedly connected at the output end of the motor (104), a fixed support frame (106) is fixedly connected at the top of the main support frame (101), a feed roller (107) is rotatably connected at the front end of the fixed support frame (106), a driven pulley (108) is fixedly connected at one end of the feed roller (107), the driven pulley (108) and the drive pulley (105) are connected by a synchronous belt, and the fixed blade (307) is fixedly connected to the fixed support frame (106).

3. The modified plastic pelletizing equipment according to claim 2, characterized in that: The feeding auxiliary mechanism includes a clamping lever (201) rotatably connected to the top of the fixed bracket (106). A clamping roller (202) is rotatably connected to the lower side of the clamping lever (201). The clamping roller (202) is symmetrically arranged with the feeding roller (107). Two symmetrically arranged spring telescopic rods (203) are rotatably connected to both sides of the clamping lever (201). The other end of the spring telescopic rod (203) is rotatably connected to the fixed bracket (106). A front guard plate (204) is rotatably connected to the front side of the fixed bracket (106). A feeding hopper (205) is fixedly connected to the front guard plate (204). The other end of the front guard plate (204) is connected to the fixed bracket (106) by bolts.

4. The modified plastic pelletizing equipment according to claim 1, characterized in that: Two symmetrically arranged bearings (302) are installed at both ends of the rotating roller (301). Arc-shaped grooves are provided on the sliding bracket (401) and the fixed back cover (405) at corresponding positions. The bearings (302) are fixedly connected in the arc-shaped grooves on the sliding bracket (401) and the fixed back cover (405).

5. A modified plastic pelletizing device according to claim 2, characterized in that: The sliding bracket (401) is slidably connected to the fixed bracket (106), and the other end of the fixed piston rod (402) is fixedly connected to the main body bracket (101). The sliding bracket (401) is fixedly connected to the rear end of the fixed back cover (405) with two symmetrically arranged fixed ears (404), and the upper and lower fixed ears (404) are fixedly connected by bolts.

6. The modified plastic pelletizing equipment according to claim 2, characterized in that: The other end of the feed roller (107) is fixedly connected to a first gear (109), and one end of the rotating roller (301) is fixedly connected to a second gear (308), which meshes with the first gear (109).

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