A plastic pelletizer capable of improving the uniformity of particle size

Abstract

The present invention relates to the technical field of plastic pelletizing, and in particular to a plastic pelletizer capable of improving the uniformity of particle size, comprising a mounting plate, the bottom of the mounting plate being fixedly connected to a support rod for supporting and fixing the mounting plate, the top of the mounting plate being fixedly connected to a mounting frame, one side of the mounting frame being embedded with an electric cylinder, the telescopic end of the electric cylinder being fixedly connected to a cutter for dividing plastic strips, a fan for air circulation being embedded on one side of the electric cylinder on the mounting frame, and a water supply pipe rack being installed on the upper part of the mounting frame. The present invention realizes water circulation through the operation of a liquid pump, and utilizes a fan to draw air from the outside and discharge it into the mounting frame to cooperate with the water supply pipe rack, so as to cool the air and flow downward to cool the plastic strips, thereby avoiding deformation of the plastic strips during the subsequent pelletizing process due to the heat of the plastic strips themselves, which affects the uniformity of the size of the plastic particles.

Description

Technical Field

[0001] The invention relates to the technical field of plastic pelletizing, in particular to a plastic pelletizer capable of improving the uniformity of particle size. Background Art

[0002] Plastic is a high-molecular compound made from monomers through addition polymerization or condensation polymerization. Microplastics can harm human health. Plastics have a medium resistance to deformation, between fibers and rubber. They are composed of synthetic resins and fillers, plasticizers, stabilizers, lubricants, colorants and other additives. Before making plastic particles, most plastics are made into plastic strips and then cut into plastic strips by a plastic pelletizer to make plastic particles.

[0003] In the prior art, for example, the patent with publication number CN116653157B discloses a plastic pelletizer, which relates to the field of plastic pelletizing technology, including a pelletizing mechanism, a conveying mechanism and a pad moving mechanism, wherein the pelletizing mechanism includes a pelletizing turntable and multiple pelletizing plates, and the pelletizing plates are provided with a cutter head, and when the cutter head moves, the direction of the cutter head remains unchanged; the conveying mechanism can convey material strips and make the material strips adapt to the moving speed of the cutter head.

[0004] The above patent sets a pelletizing turntable and a pelletizing plate. When the pelletizing plate rotates with the pelletizing turntable, the direction of the cutter head remains unchanged, thereby solving the problem of the constant change of the cutter head angle of the previous roller pelletizer. In combination with the conveying mechanism and the pad moving mechanism, the flatness of the pellet cross section is achieved on the roller pelletizer, and the uniformity of the particle size is improved. However, the above plastic pelletizer has the following problems during operation: the plastic strips have heat after production. After being cooled by water cooling, workers directly pelletize the plastic strips through a plastic pelletizer. During this process, there is still some heat in the plastic strips, which easily leads to changes in the shape of the plastic particles after pelletizing, resulting in poor uniformity of the particle size of the plastic particles after pelletizing, and the size of the plastic particles cannot be changed. To address the above problems, we provide a plastic pelletizer that can improve the uniformity of particle size. Summary of the invention

[0005] In order to overcome the shortcomings mentioned in the above background technology, the present invention provides a plastic pelletizer which can improve the uniformity of particle size.

[0006] The technical solution of the present invention is: a plastic pelletizer capable of improving the uniformity of particle size, comprising a mounting plate, a support rod and a mounting frame, the bottom of the mounting plate is fixedly connected with a support rod for supporting and fixing the mounting plate, the top of the mounting plate is fixedly connected with a mounting frame, one side of the mounting frame is embedded with an electric cylinder, the telescopic end of the electric cylinder is fixedly connected with a cutter for plastic strip segmentation, a fan for air circulation is embedded on one side of the electric cylinder on the mounting frame, a water supply pipe rack is installed on the upper part of the mounting frame, and the two sides of the water supply pipe rack are respectively connected with the two sides of the water tank with delivery pipes, the water tank is embedded on the mounting plate, a liquid pump is installed in the water tank, and the liquid pump is connected with the delivery pipe on one side, a fixing plate is fixedly connected to the inner wall of the mounting frame on the side away from the cutter, the lower part of the fixing plate is provided with grooves distributed at equal intervals, and a limiting wheel is rotatably connected in the groove of the fixing plate, a stepping assembly for moving the plastic strip is installed on the mounting frame, and an auxiliary positioning assembly for fixing and limiting the plastic strip is arranged on one side of the cutter.

[0007] Optionally, the water supply pipe rack is made of copper to facilitate cooling of the discharged airflow.

[0008] Optionally, the stepping assembly includes symmetrically distributed rotating shafts, which are rotatably connected to two side positions of the mounting plate respectively, and the mounting plate is provided with symmetrically distributed grooves, and guide wheels are provided in the grooves on the mounting plate, and the guide wheels are fixedly connected to the rotating shaft, and the lowest point of the contact surface between the guide wheel and the plastic strip is higher than the highest point of the mounting plate, so as to facilitate the plastic strip to be conveyed to the left, and a sprocket is fixedly connected to one end of the rotating shaft, and the symmetrically distributed sprockets are driven by a chain, and a one-way gear is fixedly connected to the other end of the rotating shaft close to the cutter side, and a rack rack meshing with the one-way gear is fixedly connected to one side wall of the cutter, and the rack rack is slidably matched with the mounting frame.

[0009] Optionally, the lowest point of the limiting wheel and the highest point of the guide wheel are on the same horizontal plane, and the limiting wheel cooperates with the guide wheel to convey the plastic strips.

[0010] Optionally, the auxiliary positioning assembly includes a mounting slide rod, the mounting slide rod is fixedly connected to a side wall of the cutter, a sliding frame is slidably connected to the lower side of the mounting slide rod, an elastic member is fixedly connected between the mounting slide rod and the sliding frame, a rotating shaft is rotatably connected to the lower part of the sliding frame, extrusion wheels are equidistantly fixed on the rotating shaft, and the positions of the extrusion wheels and the guide wheels correspond one to one.

[0011] Optionally, the diameter of the contact surface between the extrusion wheel and the plastic strip is smaller than the diameter of the contact surface between the guide wheel and the plastic strip, and the extrusion wheel moves downward to extrude the plastic strip to position and fix it.

[0012] Optionally, a connecting rod is fixedly connected to the other side wall of the cutter, and a movable plate is fixedly connected between the connecting rod and the bottom of the rack frame, the movable plate is equidistantly provided with mounting grooves, a baffle is provided in the mounting groove on the movable plate, both sides of the baffle are provided with locking grooves, sliding grooves are provided at both ends of the mounting groove of the movable plate, and the mounting groove on the movable plate is connected with the sliding groove, a locking block is slidably provided in the sliding groove on the movable plate, a spring is fixed between the locking block and the sliding groove on the movable plate, and a pulling piece is provided between the locking blocks on the same side.

[0013] Optionally, the pulling member includes equally spaced guide rods, which are respectively fixed to adjacent side walls of the positioning blocks, the guide rods pass through the movable plate, and a pulling plate is fixed between the ends of the guide rods on the same side. The mounting plate is provided with an inclined groove for facilitating the sliding of plastic particles after pelletizing, and the inclined groove is located below the cutter. Sliding grooves are equidistantly provided on the mounting plate, and the baffle slides in the sliding groove.

[0014] Optionally, a winding wheel is fixedly connected to a side wall of the one-way gear close to the mounting frame, a conical plate is fixedly connected to the bottom of the water delivery pipe of the water delivery pipe rack, straight rods are fixedly connected to the inner wall of the mounting frame in a symmetrical manner, and the straight rods are located on the lower side of the water delivery pipe rack, a collecting frame is slidably connected between the symmetrically distributed straight rods, a water outlet pipe is fixedly connected to the bottom of the collecting frame, the lower end of the water outlet pipe on the collecting frame passes through the mounting plate and is fixed thereto, and the water outlet pipe on the collecting frame is elastic and deformable, a scraper is fixedly connected to the inside of the collecting frame, a V-shaped groove is provided on the scraper that is adapted to the conical plate, an elastic member is fixedly connected between the collecting frame and a side wall inside the mounting frame, an inclined fixed pulley is fixedly connected to the side wall of the mounting frame, a pull rope is fixedly connected to the side wall of the collecting frame, the pull rope passes through the side wall of the mounting frame and bypasses the fixed pulley to be fixed to the winding wheel.

[0015] Optionally, a side support rod on the lower side of the mounting plate is fixedly connected to a mounting seat, and a cooling box is arranged between the two mounting seats, the cooling box is rotatably connected to a rotating rod, one end of the rotating rod is fixedly connected to a spur gear, and one side of the spur gear is provided with a rack plate fixed to the side wall of the movable plate, an axis roller is fixedly connected to the rotating rod in the cooling box, two filter plates are fixedly connected to the axis roller, a discharge groove is provided on the axis roller, the discharge groove is located between the two filter plates, and a discharge port is provided on one side wall of the cooling box away from the spur gear, the discharge port is connected to the discharge groove, a blanking frame is rotatably connected to the mounting plate, a torsion spring for resetting is provided at the rotating connection between the blanking frame and the mounting plate, and a flexible plate is fixedly connected between the blanking frame and the mounting plate.

[0016] Beneficial effects: The present invention extracts the liquid in the water tank through the operation of the liquid pump and delivers it to the water supply pipe rack through the delivery pipe connected thereto. The liquid in the water supply pipe rack is discharged into the water tank through the delivery pipe connected to the other side thereof. The above method can realize water circulation, and the fan is used to extract the outside air and discharge it into the installation frame to cooperate with the water supply pipe rack, so that the air is cooled and flows downward to cool the plastic strips, thereby avoiding deformation of the plastic strips during the subsequent pelletizing process due to the heat of the plastic strips themselves, which affects the uniformity of the particle size of the plastic particles. The plastic strips can be squeezed and fixed by moving the extrusion wheel downward, so that it is convenient for the cutter to pelletize the plastic strips. In this process, displacement of the plastic strips can be avoided during the pelletizing process, thereby affecting the uniformity of the particle size of the plastic particles after the plastic strips are pelletized. The pull plate is pulled away from the positioning block through the guide rod to release the limit on the baffle, and the baffle is taken out of the mounting groove of the movable plate and placed in a suitable mounting groove. The distance that the plastic strip moves to the left can be limited by the baffle, so that the size of the plastic particles cut can be adjusted. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0018] Figure 2 It is a side view stereoscopic structural schematic diagram of the present invention.

[0019] Figure 3 It is a schematic diagram of the cross-sectional three-dimensional structure of the installation frame of the present invention.

[0020] Figure 4 It is a schematic diagram of the three-dimensional structure of the auxiliary positioning component of the present invention.

[0021] Figure 5 It is a schematic cross-sectional structural diagram of the pulling member of the present invention.

[0022] Figure 6 It is a partially enlarged three-dimensional structural schematic diagram of the blanking frame of the present invention.

[0023] Figure 7 It is a bottom view structural schematic diagram of the water supply pipe rack of the present invention.

[0024] Figure 8 It is a schematic diagram of the three-dimensional structure of the collecting frame and the scraper of the present invention.

[0025] Fig. 9 It is a schematic diagram of the three-dimensional structure of the cooling box of the present invention.

[0026] Fig.10 It is a schematic diagram of the three-dimensional structure of the shaft roller of the present invention.

[0027] Parts names and serial numbers in the figure: 1. Mounting plate, 2. Support rod, 3. Mounting frame, 4. Electric cylinder, 5. Cutter, 6. Fan, 7. Water supply pipe rack, 8. Water tank, 9. Delivery pipe, 10. Fixed plate, 11. Limiting wheel, 12. Rotating shaft, 13. Guide wheel, 14. Sprocket, 15. Chain, 16. One-way gear, 17. Rack rack, 18. Mounting slide bar, 19. Sliding frame, 20. Rotating shaft, 21. Extrusion wheel, 22. Connecting rod, 23. Moving plate, 24. Baffle, 2 5. Positioning slot, 26. Positioning block, 27. Spring, 28. Guide rod, 29. Pull plate, 30. Inclined slot, 31. Sliding slot, 32. Winding wheel, 33. Conical plate, 34. Straight rod, 35. Collecting frame, 36. Scraper, 37. Fixed pulley, 38. Pull rope, 39. Mounting seat, 40. Cooling box, 41. Rotating rod, 42. Spur gear, 43. Rack plate, 44. Shaft roller, 45. Filter plate, 46. Discharge slot, 47. Discharge port, 48. Unloading frame, 49. Flexible board. DETAILED DESCRIPTION

[0028] The technical solution is further described below in conjunction with specific embodiments. It should be noted that the words indicating directions such as up, down, left, and right mentioned in this document are only for the positions of the structures shown in the corresponding drawings. The serial numbers assigned to the components in this document, such as first, second, etc., are only used to distinguish the objects described and do not have any order or technical meaning. Example 1

[0029] like Figure 1-Figure 4As shown, a plastic pelletizer capable of improving the uniformity of particle size comprises a mounting plate 1, a support rod 2 and a mounting frame 3. Four support rods 2 are fixedly connected to the bottom of the mounting plate 1, and the four support rods 2 are used to support and fix the mounting plate 1. A mounting frame 3 is fixedly connected to the top of the mounting plate 1. An electric cylinder 4 is embedded on the left side of the mounting frame 3. A cutter 5 for dividing plastic strips is fixedly connected to the telescopic end of the electric cylinder 4. A fan 6 for air circulation is embedded on the right side of the electric cylinder 4 on the mounting frame 3. A water supply pipe rack 7 is installed on the upper part of the mounting frame 3. The material of the water supply pipe rack 7 is copper, which is convenient for cooling the discharged airflow. A water tank 8 is embedded on the mounting plate 1. The front and rear sides of the water supply pipe rack 7 are respectively connected to the front and rear sides of the water tank 8 with a delivery pipe 9. A liquid pump is installed in the water tank 8, and the liquid pump is connected to the delivery pipe 9 on the rear side. A fixing plate 10 is fixedly connected to the right side of the inner wall of the mounting frame 3. The lower part of the fixing plate 10 is provided with grooves distributed at equal intervals. The grooves of the fixing plate 10 The inner rotation is connected to the limit wheel 11, and a stepping assembly for moving the plastic strip is installed on the mounting frame 3. The right side wall of the cutter 5 is provided with an auxiliary positioning assembly for fixing and limiting the plastic strip. The liquid pump will extract the liquid in the water tank 8 and transport it to the water supply pipe rack 7 through the delivery pipe 9 connected thereto. The liquid in the water supply pipe rack 7 is discharged into the water tank 8 through the delivery pipe 9 connected to the front side. The above method can realize water circulation, and the fan 6 can extract the outside air and discharge it into the mounting frame 3. The air entering the mounting frame 3 first contacts the water supply pipe rack 7, and the water in the water supply pipe rack 7 is continuously circulated. For this purpose, the air discharged by the fan 6 can be cooled, and the air flowing downward becomes cold air, which contacts the plastic strips through the cold air flowing downward. For this purpose, the plastic strips can be cooled to avoid deformation during the subsequent pelletizing process of the plastic strips due to the heat of the plastic strips themselves, which affects the uniformity of the particle size of the plastic particles.

[0030] The stepper assembly includes two rotating shafts 12 symmetrically distributed on the left and right sides, and the two rotating shafts 12 are rotatably connected to the left and right sides of the mounting plate 1 respectively. The mounting plate 1 is provided with grooves symmetrically distributed. A guide wheel 13 is arranged in the groove on the mounting plate 1, and the guide wheel 13 is fixedly connected to the rotating shaft 12. The lowest point of the contact surface between the guide wheel 13 and the plastic strip is higher than the highest point of the mounting plate 1, which is convenient for the plastic strip to be transported to the left. The lowest point of the limiting wheel 11 and the highest point of the guide wheel 13 are on the same horizontal plane. The limiting wheel 11 and the guide wheel 13 cooperate to transport the plastic strip. The front end of the rotating shaft 12 is fixedly connected with a sprocket 14 The left and right sprockets 14 are driven by a chain 15. The rear end of the left rotating shaft 12 is fixedly connected to a one-way gear 16. The rear side wall of the cutter 5 is fixedly connected to a rack frame 17 meshing with the one-way gear 16. The rack frame 17 is slidably matched with the mounting frame 3. The cutter 5 moves upward through the rack frame 17 and cooperates with the one-way gear 16. The one-way gear 16 can make the left rotating shaft 12 rotate counterclockwise. Through the cooperation of the sprocket 14 and the chain 15, the right rotating shaft 12 can be driven to rotate counterclockwise. The rotating shaft 12 drives the guide wheel 13 to rotate counterclockwise, which can provide power for conveying the plastic strip to the left.

[0031] The auxiliary positioning assembly includes an installation slide bar 18, which is fixed to the right side wall of the cutter 5. A sliding frame 19 is slidably connected to the lower side of the installation slide bar 18. An elastic member is fixed between the installation slide bar 18 and the sliding frame 19. The lower part of the sliding frame 19 is rotatably connected to a rotating shaft 20. Extrusion wheels 21 are fixed to the rotating shaft 20 at equal distances. The positions of the extrusion wheels 21 and the guide wheels 13 correspond one to one. The contact surface diameter of the extrusion wheel 21 and the plastic strip is smaller than the contact surface diameter of the guide wheel 13 and the plastic strip. The downward movement of the extrusion wheel 21 is used to extrude the plastic strip for positioning and fixing. The downward movement of the cutter 5 can drive The parts thereon move downward, so that the installation slide rod 18 and the elastic member thereon can push the slide frame 19 to move downward, and the slide frame 19 moves downward, so that the extrusion wheel 21 thereon moves downward through the rotating shaft 20. Because the contact surface diameter of the extrusion wheel 21 and the plastic strip is smaller than the contact surface diameter of the guide wheel 13 and the plastic strip, the plastic strip can be squeezed and fixed by the downward movement of the extrusion wheel 21, so that it is convenient for the cutter 5 to pelletize the plastic strip. In this process, it can be avoided that the plastic strip is displaced during the pelletizing process, thereby affecting the uniformity of the particle size of the plastic particles after the plastic strip is pelletized.

[0032] When in use, the user moves the plastic strip to the left so that the plastic strip is inserted into the lower side of the limiting wheel 11 and is located on the upper side of the left guide wheel 13, and then starts the electric cylinder 4, the fan 6 and the liquid pump in the water tank 8. The liquid pump will extract the liquid in the water tank 8 and transport it to the water supply pipe rack 7 through the delivery pipe 9 connected to it. The liquid in the water supply pipe rack 7 is discharged into the water tank 8 through the delivery pipe 9 connected to the front side. The above method can realize water circulation. The fan 6 can extract the outside air and discharge it into the installation frame 3. The air entering the installation frame 3 first contacts the water supply pipe rack 7 and circulates continuously through the water in the water supply pipe rack 7. For this reason, the air discharged by the fan 6 can be cooled, and the air flowing downward becomes cold air. The cold air flows downward and contacts the plastic strip, so it can The plastic strip is cooled to avoid deformation during the subsequent pelletizing of the plastic strip due to the heat in the plastic strip itself, which affects the uniformity of the particle size of the plastic particles. The downward movement of the cutter 5 can drive the parts thereon to move downward, and for this purpose, the mounting slide bar 18 and the elastic member thereon can push the sliding frame 19 to move downward. The sliding frame 19 moves downward and the extrusion wheel 21 thereon moves downward through the rotating shaft 20. Since the contact surface diameter of the extrusion wheel 21 and the plastic strip is smaller than the contact surface diameter of the guide wheel 13 and the plastic strip, the plastic strip can be squeezed and fixed by moving the extrusion wheel 21 downward, which makes it easier for the cutter 5 to pelletize the plastic strip. In this process, displacement of the plastic strip can be avoided during the pelletizing of the plastic strip, thereby affecting the uniformity of the particle size of the plastic particles after the plastic strip is pelletized.

[0033] In the above process, the cutter 5 moves upward and cooperates with the rack frame 17 and the one-way gear 16, and can make the left rotating shaft 12 rotate counterclockwise through the one-way gear 16 (during the downward movement of the cutter 5, the one-way gear 16 can be made to rotate clockwise through the rack frame 17, but the one-way gear 16 cannot drive the left rotating shaft 12 to rotate synchronously. Because the one-way gear 16 is a prior art, it is not described in detail here). Through the cooperation of the sprocket 14 and the chain 15, the right rotating shaft 12 can be driven to rotate counterclockwise, and the guide wheel 13 driven by the rotating shaft 12 to rotate counterclockwise can provide power for the plastic strip to be transported to the left. Because the lowest point of the contact surface between the guide wheel 13 and the plastic strip is higher than the highest point of the mounting plate 1, a gap is created between the plastic strip and the mounting plate 1 through the guide wheels 13 on the left and right sides to prevent the plastic strip from rubbing against the mounting plate 1 during movement and causing deformation, thereby affecting the uniformity of the particle size of the plastic particles after pelletizing. Example 2

[0034] On the basis of Example 1, Figure 1 , Figure 4-Figure 6As shown, a connecting rod 22 is fixedly connected to the front side wall of the cutter 5, and a movable plate 23 is fixedly connected between the connecting rod 22 and the bottom of the rack frame 17. The movable plate 23 is provided with mounting grooves at equal intervals, and a baffle 24 is provided in the mounting groove on the movable plate 23. A clamping groove 25 is provided on both sides of the baffle 24. Slide grooves are provided at both ends of the mounting groove of the movable plate 23, and the mounting groove on the movable plate 23 is connected with the slide groove. A clamping block 26 is slidably provided in the slide groove on the movable plate 23, and a spring 27 is fixedly connected between the clamping block 26 and the slide groove on the movable plate 23. A pulling member is provided between the clamping blocks 26 on the same side, and the pulling member includes guide rods 28 distributed at equal intervals. The guide rods 28 distributed at equal intervals are respectively fixed to the side walls of adjacent clamping blocks 26, and the guide rods 28 penetrate the movable plate 23. A pulling plate 29 is fixedly connected between the ends of the guide rods 28 on the same side. A tilting plate 29 is provided on the left side of the top of the mounting plate 1 for facilitating the sliding of plastic particles after pelletizing. The inclined groove 30 is located below the cutter 5. The left side of the mounting plate 1 is equidistantly provided with sliding grooves 31, and the baffle plate 24 is slidably located in the sliding groove 31. The thickness of the baffle plate 24 is less than that of the sliding groove 31, so that the baffle plate 24 can move up and down easily. When the pelletizing size of the plastic particles needs to be adjusted, the user first pulls the pull plate 29 to move the blocking block 26 away from the blocking groove 25 through the guide rod 28 to release the limit on the baffle plate 24, and then takes the baffle plate 24 out of the mounting groove of the movable plate 23 and places it in a suitable mounting groove, and then releases the pull plate 29. Under the action of the elastic force of the spring 27, the blocking block 26 is inserted into the blocking groove 25 of the baffle plate 24 to complete the limit fixation of the baffle plate 24. For this reason, when the plastic strip is moved to the left through the above content, the distance that the plastic strip moves to the left can be limited by the baffle plate 24, so that the size of the plastic particles can be adjusted. Example 3

[0035] On the basis of Example 2, Figure 2 , Figure 7 and Figure 8As shown, a reel 32 is fixedly connected to the front side wall of the one-way gear 16, and the reel 32 has no contact relationship with the rotating shaft 12 on the left side. A conical plate 33 is fixedly connected to the bottom of the water supply pipe of the water supply pipe rack 7. The conical plate 33 is made of copper, and the conical part is located at the lower side, so that the moisture in the air condenses on the water supply pipe rack 7 after passing through the water supply pipe rack 7, and gradually gathers to form water droplets and hangs on the conical plate 33. Straight rods 34 symmetrically distributed on the left and right are fixedly connected between the front and rear walls in the installation frame 3, and the straight rods 34 are located on the lower side of the water supply pipe rack 7. A collecting frame 35 is slidably connected between the left and right straight rods 34 to collect the water. A water outlet pipe (not shown in the figure) is fixedly connected to the bottom of the frame 35, the lower end of the water outlet pipe on the collecting frame 35 passes through the mounting plate 1 and is fixed thereto, and the water outlet pipe on the collecting frame 35 is elastic and deformable, a scraper 36 is fixedly connected to the inside of the collecting frame 35, and a V-shaped groove adapted to the conical plate 33 is provided on the scraper 36, an elastic member (not shown in the figure) sleeved on the outside of the straight rod 34 is fixedly connected between the collecting frame 35 and the rear side wall inside the mounting frame 3, an inclined fixed pulley 37 is fixedly connected to the rear side wall of the mounting frame 3, a pull rope 38 is fixedly connected to the rear side wall of the collecting frame 35, the pull rope 38 passes through the rear side wall of the mounting frame 3 and bypasses the fixed pulley 37 to be fixed to the winding wheel 32.

[0036] When the one-way gear 16 rotates counterclockwise, the drawstring 38 can be reeled in through the reel-in wheel 32. When the drawstring 38 is reeled in, the collection frame 35 is pulled to move backward. At this time, the elastic member between the collection frame 35 and the mounting frame 3 is compressed. The collection frame 35 moves backward, driving the scraper 36 thereon to move backward. The scraper 36 moves backward and cooperates with the conical plate 33 through the V-shaped groove thereon, so that the water droplets on the conical plate 33 can be cleaned (it is explained at this time that the liquid flowing in the water supply pipe rack 7 is cooling water, so it can ensure that the moisture in the downward flowing air is filtered out. Because cooling water is a prior art, it is not described in detail here). The water droplets fall into the collecting frame 35 and are discharged downward through the water outlet pipe on the collecting frame 35. When the one-way gear 16 rotates clockwise, the collecting frame 35 is moved forward and reset under the action of the elastic member between the collecting frame 35 and the mounting frame 3. In this process, the water droplets on the conical plate 33 can be cleaned again by the scraper 36. For this purpose, the conical plate 33 can be used to guide the water droplets gathered at the bottom of the water supply pipe on the water supply pipe rack 7 downward in the above manner, so that the water droplets adhere to the lower part of the conical plate 33, and the scraper 36 is moved to clean the water droplets on the conical plate 33 in time, so as to facilitate the subsequent cooling of the air discharged downward.

[0037] A mounting seat 39 is fixedly connected to the left side of the left support rod 2, and a cooling box 40 is arranged between the front and rear mounting seats 39. A rotating rod 41 is rotatably connected to the cooling box 40, and a spur gear 42 is fixedly connected to the front end of the rotating rod 41 (the spur gear 42 also uses a one-way gear), and a rack plate 43 fixedly connected to the left side wall of the moving plate 23 is arranged on the right side of the spur gear 42. A shaft roller 44 is fixedly connected to the rotating rod 41 in the cooling box 40, and two filter plates 45 are fixedly connected to the shaft roller 44. A discharge groove 46 (the cross-sectional width of the discharge groove is gradually increased from front to back) is provided on the shaft roller 44. Gradually increases), a discharge trough 46 is located on the upper side of the filter plate 45 on the lower side, and a discharge port 47 is opened on the rear side wall of the cooling box 40, and the discharge port 47 is communicated with the discharge trough 46. A discharge frame 48 is rotatably connected to the left wall of the mounting plate 1. A torsion spring for resetting is provided at the rotation connection between the discharge frame 48 and the mounting plate 1. A flexible plate 49 is fixedly connected between the discharge frame 48 and the mounting plate 1. The flexible plate 49 can fill the gap between the discharge frame 48 and the mounting plate 1 when the discharge frame 48 swings, so as to facilitate the plastic particles after pelletizing to slide to the left.

[0038] The cut plastic particles slide to the left under the action of the inclined surface of the inclined groove 30 and fall into the cooling box 40 through the unloading frame 48. Because the cooling box 40 is filled with clean water, the plastic particles fall downward into the clean water in the cooling box 40. The water in the cooling box 40 can further cool the cut plastic particles, so that the plastic particles can be better shaped and the particle size uniformity of the cut plastic particles is better. When the moving plate 23 moves downward, the rack plate 43 drives the spur gear 42 to rotate clockwise (because the spur gear 42 is also a one-way gear, the spur gear 42 cannot drive the rotating rod 41 to rotate when the moving plate 23 moves downward. When the moving plate 23 moves upward, the rack plate 43 can drive the rotating rod 41 to rotate counterclockwise through the spur gear 42). The needle rotates through the shaft roller 44 to make the filter plate 45 on it rotate upward in the circumferential direction, so that the lower filter plate 45 can drive the plastic particles on its upper side to move upward. When the lower filter plate 45 swings upward to a certain height and its right side tilts upward, the plastic particles on the lower filter plate 45 slide to the left along its inclined surface and are discharged through the discharge trough 46 and the discharge port 47 (the user can place a mail box on the lower side of the discharge port 47 to collect the discharged plastic particles). When the lower filter plate 45 swings upward, it can collide with the discharge frame 48, causing the discharge frame 48 to vibrate, so that the plastic particles in the discharge frame 48 quickly slide to the left, thereby preventing the plastic particles from staying in the discharge frame 48 for too long, thereby missing the optimal shaping time, resulting in poor particle uniformity of some plastic particles, affecting subsequent use.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the present invention.

Claims

1. A plastic pelletizer capable of improving the uniformity of particle size, comprising a mounting plate (1), a support rod (2) and a mounting frame (3), wherein the bottom of the mounting plate (1) is fixedly connected to the support rod (2) for supporting and fixing the mounting plate, and the top of the mounting plate (1) is fixedly connected to the mounting frame (3), wherein: An electric cylinder (4) is embedded on one side of the installation frame (3), and a cutter (5) for cutting plastic strips is fixedly connected to the telescopic end of the electric cylinder (4). A fan (6) for air circulation is embedded on one side of the electric cylinder (4) on the installation frame (3). A water supply pipe rack (7) is installed on the upper part of the installation frame (3). Two sides of the water supply pipe rack (7) are respectively connected to two sides of a water tank (8) via delivery pipes (9). The water tank (8) is embedded on the installation plate (1). A liquid pump is installed in the water tank (8), and the liquid pump is connected to the delivery pipe (9) on one side. The inner wall of the installation frame (3) is away from the cutter (5). A fixing plate (10) is fixedly connected to one side of the fixing plate (10), and grooves distributed at equal intervals are provided at the bottom of the fixing plate (10). A limiting wheel (11) is rotatably connected in the groove of the fixing plate (10). A stepping assembly for moving the plastic strip is installed on the mounting frame (3). An auxiliary positioning assembly for fixing and limiting the plastic strip is provided on one side of the cutter (5). The stepping assembly includes symmetrically distributed rotating shafts (12). The symmetrically distributed rotating shafts (12) are rotatably connected to the two side positions of the mounting plate (1). The mounting plate (1) is provided with symmetrically distributed grooves. A guide wheel (13) is provided in the groove of the mounting plate (1), and the guide wheel (13) is provided in the groove of the mounting plate (1). The wheel (13) is fixedly connected to the rotating shaft (12); the lowest point of the contact surface between the guide wheel (13) and the plastic strip is higher than the highest point of the mounting plate (1), so as to facilitate the leftward conveyance of the plastic strip; a sprocket wheel (14) is fixedly connected to one end of the rotating shaft (12); the symmetrically distributed sprocket wheels (14) are driven by a chain (15); a one-way gear (16) is fixedly connected to the other end of the rotating shaft (12) near the cutter (5); a rack frame (17) meshing with the one-way gear (16) is fixedly connected to a side wall of the cutter (5); the rack frame (17) is slidably matched with the mounting frame (3); the auxiliary positioning assembly includes a mounting slide rod (18); The mounting slide bar (18) is fixedly connected to a side wall of the cutter (5); a sliding frame (19) is slidably connected to the lower side of the mounting slide bar (18); an elastic member is fixedly connected between the mounting slide bar (18) and the sliding frame (19); a rotating shaft (20) is rotatably connected to the lower part of the sliding frame (19); extrusion wheels (21) are equidistantly fixedly connected to the rotating shaft (20); and the positions of the extrusion wheels (21) and the guide wheels (13) correspond one to one; the contact surface diameter of the extrusion wheel (21) and the plastic strip is smaller than the contact surface diameter of the guide wheel (13) and the plastic strip; the extrusion wheel (21) moves downward to extrude the plastic strip for positioning and fixing;A connecting rod (22) is fixedly connected to the other side wall of the cutter (5); a movable plate (23) is fixedly connected between the connecting rod (22) and the bottom of the rack frame (17); mounting grooves are equidistantly provided on the movable plate (23); a baffle (24) is provided in the mounting groove on the movable plate (23); both sides of the baffle (24) are provided with a locking groove (25); both ends of the mounting groove of the movable plate (23) are provided with a slide groove; the mounting groove on the movable plate (23) is connected to the slide groove; a locking block (26) is slidably provided in the slide groove on the movable plate (23); the locking block (26) is connected to the movable plate (23) A spring (27) is fixedly connected between the slide grooves on the plate (23), and a pulling member is arranged between the positioning blocks (26) on the same side; the pulling member comprises guide rods (28) distributed at equal intervals, and the guide rods (28) distributed at equal intervals are respectively fixedly connected to the side walls of adjacent positioning blocks (26), the guide rods (28) penetrate the movable plate (23), and a pulling plate (29) is fixedly connected between the ends of the guide rods (28) on the same side. The mounting plate (1) is provided with an inclined groove (30) for facilitating the sliding of plastic particles after pelletizing, and the inclined groove (30) is located below the cutter (5). The mounting plate (1) is provided with sliding grooves (31) at equal intervals. , and the baffle (24) is slidably located in the sliding groove (31); a winding wheel (32) is fixedly connected to a side wall of the one-way gear (16) close to the installation frame (3); a conical plate (33) is fixedly connected to the bottom of the water supply pipe of the water supply pipe rack (7); symmetrically distributed straight rods (34) are fixedly connected to the inner wall of the installation frame (3), and the straight rods (34) are located on the lower side of the water supply pipe rack (7); a collection frame (35) is slidably connected between the symmetrically distributed straight rods (34); a water outlet pipe is fixedly connected to the bottom of the collection frame (35); the lower end of the water outlet pipe on the collection frame (35) passes through the installation plate (1) and is fixedly connected thereto, and the water outlet pipe on the collecting frame (35) is elastic and deformable, a scraper (36) is fixedly connected inside the collecting frame (35), and a V-shaped groove adapted to the conical plate (33) is provided on the scraper (36), an elastic member is fixedly connected between the collecting frame (35) and a side wall inside the mounting frame (3), an inclined fixed pulley (37) is fixedly connected to the side wall of the mounting frame (3), a pull rope (38) is fixedly connected to the side wall of the collecting frame (35), and the pull rope (38) passes through the side wall of the mounting frame (3) and bypasses the fixed pulley (37) to be fixedly connected to the winding wheel (32);A mounting seat (39) is fixedly connected to a side support rod (2) on the lower side of the mounting plate (1), a cooling box (40) is provided between the two mounting seats (39), a rotating rod (41) is rotatably connected to the cooling box (40), one end of the rotating rod (41) is fixedly connected to a spur gear (42), one side of the spur gear (42) is provided with a rack plate (43) fixedly connected to the side wall of the movable plate (23), a shaft roller (44) is fixedly connected to the rotating rod (41) in the cooling box (40), and two filter plates (45) are fixedly connected to the shaft roller (44). The shaft roller (44) is provided with a discharge groove (46), the discharge groove (46) being located between the two filter plates (45), and a discharge port (47) is provided on a side wall of the cooling box (40) away from the spur gear (42), the discharge port (47) being communicated with the discharge groove (46), a discharge frame (48) being rotatably connected to the mounting plate (1), a torsion spring for resetting being provided at the rotational connection between the discharge frame (48) and the mounting plate (1), and a flexible plate (49) being fixedly connected between the discharge frame (48) and the mounting plate (1). ; 2. A plastic pelletizer capable of improving the uniformity of particle size according to claim 1, characterized in that: The water supply pipe frame (7) is made of copper, which is convenient for cooling the discharged airflow.

3. A plastic pelletizer capable of improving the uniformity of particle size according to claim 1, characterized in that: The lowest point of the limiting wheel (11) and the highest point of the guide wheel (13) are located on the same horizontal plane, and the limiting wheel (11) and the guide wheel (13) cooperate to transport the plastic strips.

Images