A plastic granulation equipment

Abstract

The invention relates to the field of plastic particle granulation, and specifically to a plastic particle granulation device, comprising a supporting unit and a rotary cutting unit; the supporting unit comprises a supporting plate, the supporting plate is arranged to be inclined downward, the high end of the supporting plate is fixedly connected to a limiting plate, and a plurality of cuts are evenly provided on the limiting plate and the supporting plate; the rotary cutting unit is arranged on the back side of the limiting plate; the rotary cutting unit comprises a rotating shaft, a ring body is fixedly connected to the rotating shaft, and a plurality of cutters are fixedly connected to the ring body; the invention directly avoids the wear of parts caused by the rapid up and down alternating movement of the cutter, and the problem that the cutter cannot be perpendicular to the surface of the material through the cooperation of the supporting unit and the rotary cutting unit, and at the same time, the cutter produces more particles each time of rotary cutting, thereby improving the shredding efficiency while ensuring that the efficiency of the extrusion module is fully utilized.

Description

Technical Field

[0001] The invention relates to the field of plastic particle granulation, in particular to a plastic particle granulation device. Background Art

[0002] Plastic granulation equipment is a plastic granulator, and the plastic granulator is a device used to process plastic waste or new plastic into small particles. There are many types of plastic granulators, mainly including water-cooled plastic granulators, simulated water-cooled plastic granulators, mold-type plastic granulators, vacuum pump-type plastic granulators and plastic granulators with special functions. The main machine of the plastic granulator is an extruder. The molten material is extruded into thin strips through the extruder, and then transmitted along the cooling trough and cold-solidified. Finally, it passes through the cutting module to cut the thin strips into particles, and the plastic granulation is completed.

[0003] The thin strip-shaped material is continuously conveyed to the cutting module position, and the cutter moves up and down rapidly and alternately at the same time. The amount of material conveyed each time is the length of the particles cut. This method is widely used, but it still has some shortcomings. For example, the cutter moves up and down alternately many times. The fixed cutter parts need to ensure linear movement up and down. The multiple up and down alternating movements will inevitably accelerate the wear of the fixed cutter parts, resulting in the cutter being unable to be perpendicular to the surface of the thin strip material. The moment the blade contacts the surface of the thin strip material, it is easy to cause the cutter blade to break.

[0004] Therefore, a plastic granulation device is proposed to solve the above problems. Summary of the invention

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the problem of shredding efficiency in the prior art.

[0006] In order to solve the above technical problems, the present invention provides a plastic particle granulation equipment, including a supporting unit and a rotary cutting unit; the supporting unit includes a support plate, which is arranged to be inclined downward, and the high end of the support plate is fixedly connected to a limiting plate, and a plurality of incisions are evenly arranged on the limiting plate and the support plate; the rotary cutting unit is arranged on the back of the limiting plate; the rotary cutting unit includes a rotating shaft, a ring body is fixedly connected to the rotating shaft, and a plurality of cutters are fixedly connected to the ring body, and the cutters are arranged one by one opposite to the incisions, and a pulley is fixedly connected to the end of the rotating shaft, and the pulley is connected to an external driving component through a belt transmission; the cooperation between the supporting unit and the rotary cutting unit directly avoids the wear of parts caused by the rapid up and down alternating movement of the cutter, and the problem that the cutter cannot be perpendicular to the surface of the material. At the same time, the cutter produces more particles each time of rotary cutting, thereby improving the shredding efficiency while ensuring that the extrusion module is fully utilized.

[0007] In one embodiment of the present invention, a pressing unit is provided between the supporting plate and the limiting plate; the pressing unit comprises a pressing plate, the pressing plate is parallel to the supporting plate, pressing blocks are fixedly connected at both ends of the upper surface of the pressing plate, a limiting ring is provided on the outer ring of the pressing block, the limiting ring is fixedly connected to both sides of the upper surface of the limiting plate, a compression spring is fixedly connected to the upper surface of the limiting ring, a baffle is fixedly connected to the end of the compression spring, the baffle is fixedly connected to the upper outer ring of the pressing block, a cam is provided at the upper end of the baffle, a synchronous pulley is fixedly connected to the outer side of the cam, and the synchronous pulley is connected to the inner side of the end of the rotating shaft through a synchronous belt. The cam is supported at both ends of the limit plate by a supporting rod; the rotation of the rotating shaft drives the synchronous pulley fixed on its surface, and at the same time, the synchronous pulley connected to the cam is driven by the synchronous belt to rotate, the cam rotates and intermittently squeezes the baffle, the baffle intermittently pushes down the pressing block, the pressing block moves up and down along the limit ring, the pressing block pushes down the pressing plate, and the pressing plate presses the thin strip material on the support plate, that is, before the cutter cuts the thin strip material, the pressing plate presses the thin strip material steadily on the support plate, thereby reducing the possibility of the thin strip material hitting the support plate and vibrating to damage the cutter blade.

[0008] In one embodiment of the present invention, a plurality of clamping strips are provided on the lower surface of the pressing plate, and the clamping strips are arranged along the length direction of the pressing plate; the clamping strips are provided, and the edges of the clamping strips are blade-shaped. When the thin strip material is pressed under the pressing plate, the clamping strips squeeze and fix the thin strip material, thereby further improving the stability of the thin strip material on the support plate, and preventing the thin strip material from sliding along the support plate and sliding away from the blade of the cutter when cutting the thin strip material, thereby causing ineffective cutting of the thin strip material.

[0009] In one embodiment of the present invention, the rotating shaft is provided with a plurality of through holes along its axial direction, the through holes are arranged in a circular array inside the rotating shaft, the end of the rotating shaft is rotatably connected with a hollow cover body, and the cover body is connected to an external air pipe; the surface of the rotating shaft is provided with a plurality of exhaust holes, the exhaust holes are respectively connected to the through holes, the surface of the ring body is provided with a plurality of jet pipes, the jet pipes are respectively connected to the exhaust holes, and the jet pipes are fixed to the back of the cutter; the back of the limiting plate is provided with a plurality of impact holes, the impact holes penetrate to the front side wall surface of the limiting plate, and each impact hole is provided with a cut position in half The granular materials produced by cutting slide away along the slope of the pallet. The granular materials rely on themselves to slide away from the pallet, which is inefficient and will affect the subsequent feeding speed of the thin strip materials extending to the pallet. For this purpose, an air jet pipe is set; the external air pipe is connected to the external air pump, and the gas is injected into the air jet pipe along the external air pipe and the exhaust hole. After the cutter cuts the thin strip materials, the subsequent air jet pipe is opposite to the impact hole. At this time, the gas penetrates the impact hole and impacts the granular materials slowly sliding down on the pallet, and discharges them away from the incision position, which is convenient for the subsequent feeding speed of the thin strip materials.

[0010] In one embodiment of the present invention, a disc is fixedly connected to the cover body, and a waist-shaped hole is opened at an eccentric position on the disc; the end of the rotating shaft is rotatably connected to the surface of the disc, and the through hole at the end of the rotating shaft is intermittently connected to the waist-shaped hole; the cover body is fixed, the rotating shaft rotates, the end of the rotating shaft is rotatably connected to the cover body, and the through hole is intermittently connected to the waist-shaped hole; when the cutter cuts off the thin strips of material, the through hole connected to the jet pipe on the back of the cutter is opposite to the waist-shaped hole, at this time, the gas is injected into the through hole from the waist-shaped hole, and is ejected from the jet pipe connected to the through hole, and the gas impacts and discharges the particulate material on the support plate; the arrangement of the disc and the waist-shaped hole allows the gas to be accurately injected into a through hole, while ensuring that the working power of the air pump remains unchanged, so that when the gas is discharged from the jet hole, the impact force is greater, and the impact effect on the particulate material is more obvious.

[0011] In one embodiment of the present invention, the outer ring of each of the ring bodies is provided with a knife seat for fixing the cutter, a socket is provided on the end face of the knife seat, a threaded hole is provided on the side wall of the knife seat, a fixing hole is provided on the handle of the cutter, the handle of the cutter is embedded in the socket, and the cutter is fixed by bolts passing through the threaded hole and the fixing hole; after cutting thin strips of material many times, the blade of the cutter may become blunt or the blade may break, and the cutter needs to be replaced. The cutter is fixed to the ring body by the knife seat, so that the cutter can be removed and replaced, which is convenient for the installation and disassembly of the cutter.

[0012] In one embodiment of the present invention, the blade of the cutter is set at an obtuse angle, and the front edge of the blade of the cutter is provided with saw teeth, and the tip of the saw teeth is inclined toward the blade seat; the blade of the cutter is set at an obtuse angle, and when the cutter cuts thin strips of material, the front blade of the cutter will squeeze the thin strips of material toward the limiting plate, which also further squeezes and stabilizes the thin strips of material and cuts them off. At the same time, the cutter cuts off multiple thin strips of material one by one instead of cutting them off at the same time, thereby reducing the pressure when cutting the thin strips of material and ensuring the smooth rotation of the rotating shaft.

[0013] In one embodiment of the present invention, a chamfer is provided on the upper edge of the incision on the support plate; a chamfer is provided on the front edge of the upper incision of the limit block; the limit plate and the support plate half-wrap the thin strip material, and incisions are provided on the limit plate and the support plate. When the thin strip material is fed, the end of the thin strip material may hit the edge of the incision, causing the thin strip material to bend and unable to be laid flat on the support plate. For this reason, a chamfer is provided on the edge of the incision, a chamfer is provided on the upper edge of the incision on the support plate, a chamfer is provided on the front edge of the upper incision of the limit block, and at the same time, a chamfer is also provided on the edge of the impact hole to prevent the end of the thin strip material from hitting the edge of the incision.

[0014] In one embodiment of the present invention, a baffle is provided at the lower half of both sides of the pallet, and the middle of the surface of the pallet is concave; the baffle is provided to constrain the sliding path of the granular material to prevent the particles from being impacted by the gas and detaching from the side of the pallet, causing the granular material to fall randomly. At the same time, the middle of the surface of the pallet is concave to guide the flow of the granular material and concentrate it into the collection trough provided below the pallet.

[0015] In one embodiment of the present invention, the outer ring thread of the ring body is rotatably connected with a plurality of fastening bolts, and the inner surface of the exhaust hole is provided with a thread; the cutter distance is set according to the length of the particles to be produced, or the redundant cutters are removed; the ring body is fixed on the rotating shaft by a screw, and the distance between adjacent ring bodies is adjusted. At the same time, the exposed exhaust holes on the rotating shaft are sealed by the bolt threads, and the distance between the ring bodies is adjusted to match the distance between the incisions to ensure that the cutter can pass through the incision smoothly.

[0016] The above technical solution of the present invention has the following advantages compared with the prior art:

[0017] 1. The present invention directly avoids the wear of parts caused by the rapid up and down movement of the cutter and the problem that the cutter cannot be perpendicular to the surface of the material through the cooperation of the supporting unit and the rotary cutting unit. At the same time, the cutter produces more particles each time the rotary cutting is performed, thereby improving the shredding efficiency while ensuring that the extrusion module is fully utilized.

[0018] 2. The present invention is connected to an external air pump through an external air pipe, and the gas is injected into the air jet pipe along the external air pipe and the exhaust hole. After the cutter cuts the thin strip material, the subsequent air jet pipe is opposite to the impact hole. At this time, the gas penetrates the impact hole and impacts the granular material slowly sliding down on the support plate, and impacts it away from the incision position, which is convenient for the subsequent feeding speed of the thin strip material. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to make the contents of the present invention more clearly understood, the present invention is further described in detail below based on specific embodiments of the present invention in conjunction with the accompanying drawings.

[0020] Figure 1 This is a first-view stereoscopic view of the cutting module in the present invention;

[0021] Figure 2 A three-dimensional diagram of a support plate in the present invention;

[0022] Figure 3 It is a three-dimensional diagram of the limiting plate in the present invention;

[0023] Figure 4 is a three-dimensional diagram of a cutter in the present invention;

[0024] Figure 5 A three-dimensional diagram of a pressure plate in the present invention;

[0025] Figure 6 It is a three-dimensional diagram of the matching of the cover body and the rotating shaft in the present invention;

[0026] Figure 7 is a cross-sectional view of the cover body of the present invention;

[0027] Figure 8 It is a structural schematic diagram of the plastic granulator in the present invention;

[0028] Fig. 9 A three-dimensional diagram of the matching of the ring body and the fastening bolts in the present invention

[0029] Fig.10 A second perspective stereoscopic view of the cutting module in the present invention;

[0030] Fig.11 is a three-dimensional cross-sectional view of the cover body of the present invention;

[0031] In the figure: 101, melt barrel; 102, water cooling groove; 103, spray nozzle; 104, transmission wheel; 1, support plate; 2, limit plate; 3, incision; 4, rotating shaft; 5, ring body; 6, cutter; 7, pulley; 8, pressure plate; 9, pressing block; 10, limit ring; 11, compression spring; 12, baffle; 13, cam; 14, synchronous pulley; 15, support rod; 16, clamping strip; 17, through hole; 18, cover body; 19, jet pipe; 20, impact hole; 21, disc; 22, waist hole; 23, knife seat; 24, socket; 25, fixing hole; 26, serration; 27, chamfer; 28, enclosure; 29, fastening bolt. DETAILED DESCRIPTION

[0032] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

[0033] Embodiment 1:

[0034] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 8 and Fig.10, a plastic granulation equipment, including a melting module, an extrusion module, a cooling module and a cutting module; the melting module includes a melting barrel 101, the extrusion module includes an extrusion screw, the extrusion screw is rotatably installed in the melting barrel 101, the cooling module includes a water cooling tank 102, the inlet end of the water cooling tank 102 is installed at the position of the spray nozzle 103 of the melting barrel 101, the spray nozzle 103 is provided with a plurality of, the spray nozzles 103 are arranged in a row, each spray nozzle 103 is cylindrical, and a chopping module is installed at the other end of the water cooling tank 102; the cutting module includes a supporting unit and a rotary cutting unit; the supporting unit includes a support plate 1, the inlet end of the support plate 1 is installed at the outlet position of the water cooling tank 102, the water A conveying wheel 104 installed up and down is provided on the inner wall at the other end of the cold groove 102. The cold-solidified material passes through the gap between the upper and lower conveying wheels 104, and the conveying wheel 104 can rub the material and push it onto the support plate 1; the support plate 1 is tilted downward, and the high end of the support plate 1 is fixedly connected to the limiting plate 2, and a plurality of incisions 3 are evenly provided on the limiting plate 2 and the support plate 1; a peeling unit is provided on the back of the limiting plate 2; the peeling unit includes a rotating shaft 4, a ring body 5 is fixedly connected to the rotating shaft 4, and a plurality of cutting knives 6 are fixedly connected to the ring body 5, and the cutting knives 6 are arranged opposite to the incisions 3 one by one, and a pulley 7 is fixedly connected to the end of the rotating shaft 4, and the pulley 7 is connected to an external driving component through a belt drive; the driving component includes a motor, and a motor installed on the motor. The pulley on the output end of the machine is connected to the pulley 7 on the rotating shaft through a belt; the transmission wheel 104 is driven by the motor to rotate, and the extrusion screw extrude the molten material from the extrusion nozzle 103, and then the material moves along the water-cooling trough 102, and under the rubbing migration of the transmission wheel 104, the cold-solidified thin strip material is pushed onto the support plate 1; the thin strip material is transmitted to the support plate 1, so that the end of the thin strip material extends from one side of the support plate 1 to the other side of the support plate 1. At this time, the feeding length of the thin strip material is the sum of the lengths of multiple particles, and the feeding stroke of the thin strip material is increased. At the same time, the efficiency of extruding the material by the extrusion module is also improved. While ensuring that the extrusion efficiency of the extrusion module is fully utilized, the feeding Material; when the thin strip material is pushed onto the support plate 1, the external motor is driven, and the motor drives the rotating shaft 4 to rotate through the pulley 7 and the belt, and the rotating shaft 4 drives the cutter 6 to rotate around the rotating shaft 4 through the ring body 5. When the end of the thin strip material extends from one side of the support plate 1 to the other side of the support plate 1, the cutter 6 is rotated and placed in the incision 3, and the thin strip material is cut into multiple granular materials at one time, and then the granular material slides off the support plate 1 along the inclined surface of the support plate 1, and at the same time, the end of the thin strip material placed on one side of the support plate 1 is pushed to the other side of the support plate 1 again. At this time, the cutter 6 is rotated and placed in the incision 3, and the thin strip material is cut into multiple granular materials. By analogy, the thin strip material is pushed onto the support plate 1, and the cutter 6 rotates and cuts it;The cooperation between the supporting unit and the rotary cutting unit directly avoids the wear of parts caused by the rapid up and down movement of the cutter 6, and the problem that the cutter 6 cannot be perpendicular to the surface of the material. At the same time, the cutter 6 produces more particles each time, and the shredding efficiency is improved while ensuring that the extrusion module is fully utilized.

[0035] Reference Figure 1 , Figure 2 , Figure 3 , Figure 5 and Fig.10 A pressing unit is provided between the support plate 1 and the limiting plate 2; the pressing unit comprises a pressing plate 8, the pressing plate 8 is parallel to the support plate 1, pressing blocks 9 are fixedly connected to both ends of the upper surface of the pressing plate 8, a limiting ring 10 is sleeved on the outer ring of the pressing block 9, the limiting ring 10 is fixedly connected to both sides of the upper surface of the limiting plate 2, a compression spring 11 is fixedly connected to the upper surface of the limiting ring 10, a baffle 12 is fixedly connected to the end of the compression spring 11, the baffle 12 is fixedly connected to the upper outer ring of the pressing block 9, the upper A cam 13 is provided at the end, and a synchronous pulley 14 is fixedly connected to the outer side of the cam 13. The synchronous pulley 14 is connected to the synchronous pulley 14 arranged on the inner side of the end of the rotating shaft 4 through a synchronous belt; the cam 13 is supported at both ends of the limit plate 2 by a support rod 15; when the thin strip material is pushed onto the support plate 1, there may be a gap between the thin strip material and the surface of the support plate 1, and the thin strip material is not completely attached to the surface of the support plate 1. When the cutter 6 is rotated to the incision 3 position, the cutter 6 first The thin strip material is first squeezed, and then squeezed onto the support plate 1 and cut off. At this time, the thin strip material first hits the support plate 1, and then the cutter 6 cuts the thin strip material. When the thin strip material hits the support plate 1, the impact force generated is transmitted to the blade of the cutter 6 through the thin strip material, which may cause the blade to break. For this purpose, a pressing unit is provided that can press the thin strip material on the support plate 1 in advance; the rotation of the rotating shaft 4 drives the synchronous pulley 7 fixed on its surface, and at the same time, the synchronous pulley 7 connected to the synchronous belt drive cam 13 rotates through the synchronous belt drive cam 13, and the cam 13 rotates and intermittently squeezes the baffle 12, and the baffle 12 intermittently pushes down the pressing block 9, and the pressing block 9 moves up and down along the limit ring 10, and the pressing block 9 pushes down the pressing plate 8, and the pressing plate 8 presses the thin strip material on the support plate 1, that is, before the cutter 6 cuts the thin strip material, the pressing plate 8 stabilizes the thin strip material on the support plate 1, thereby reducing the possibility that the thin strip material hits the support plate 1 and vibrates to damage the blade of the cutter 6.

[0036] Reference Figure 5A plurality of clips 16 are provided on the lower surface of the pressing plate 8, and the clips 16 are arranged along the length direction of the pressing plate 8; the clips 16 are provided, and the edges of the clips 16 are blade-shaped. When the pressing plate 8 presses the thin strip material, the clips 16 squeeze and fix the thin strip material, further improving the stability of the thin strip material on the support plate 1, and preventing the cutter 6 from sliding along the support plate 1 and sliding away from the blade of the cutter 6 when cutting the thin strip material, resulting in ineffective cutting of the thin strip material.

[0037] Reference Figure 1 , Figure 2 and Figure 4 The rotating shaft 4 has a plurality of through holes 17 along its axial direction, and the through holes 17 are arranged in a circular array inside the rotating shaft 4. The end of the rotating shaft 4 is rotatably connected with a hollow cover body 18, and the cover body 18 is connected to the external air pipe; the surface of the rotating shaft 4 has a plurality of exhaust holes, and the exhaust holes are respectively connected to the through holes 17. The surface of the ring body 5 is provided with a plurality of jet pipes 19, and the jet pipes 19 are respectively connected to the exhaust holes, and the jet pipes 19 are fixed to the back of the cutter 6; the back of the limiting plate 2 has a plurality of impact holes 20, and the impact holes 20 penetrate to the front side wall surface of the limiting plate 2, and each impact hole 20 is provided with a cut 3 in half Position; the granular material produced by cutting slides away along the slope of the support plate 1, relying on the granular material itself to slide away from the support plate 1, which is inefficient and will affect the subsequent feeding speed of the thin strip material extending to the support plate 1. For this purpose, a jet pipe 19 is set; the external air pipe is connected to the external air pump, and the gas is injected into the jet pipe 19 along the external air pipe and the exhaust hole. After the cutter 6 cuts off the thin strip material, the subsequent jet pipe 19 is opposite to the impact hole 20. At this time, the gas penetrates the impact hole 20 and impacts the granular material slowly sliding down on the support plate 1, and impacts it away from the incision 3 position, which is convenient for the subsequent feeding speed of the thin strip material.

[0038] Reference Figure 6 , Figure 7 and Fig.11 , a disc 21 is fixedly connected in the cover body 18, and a waist-shaped hole 22 is opened at an eccentric position on the disc 21; the end of the rotating shaft 4 is rotatably connected to the surface of the disc 21, and the through hole 17 at the end of the rotating shaft 4 is intermittently connected to the waist-shaped hole 22; the cover body 18 is fixed, the rotating shaft 4 rotates, the end of the rotating shaft 4 is rotatably connected to the cover body 18, and the through hole 17 is intermittently connected to the waist-shaped hole 22; when the cutter 6 cuts the thin strip material, the through hole 17 connected to the jet pipe 19 on the back of the cutter 6 is opposite to the waist-shaped hole 22, at this time, the gas is injected into the through hole 17 from the waist-shaped hole 22, and is ejected from the jet pipe 19 connected to the through hole 17, and the gas impacts and discharges the particulate material on the support plate 1; the arrangement of the disc 21 and the waist-shaped hole 22 allows the gas to be accurately injected into a through hole 17, while ensuring that the working power of the air pump remains unchanged, so that when the gas is discharged from the jet hole, the impact force is greater, and the impact effect of the particulate material is more obvious.

[0039] Reference Figure 4 The outer ring of each of the ring bodies 5 is provided with a knife seat 23 for fixing the cutter 6, a socket 24 is provided on the end face of the knife seat 23, a threaded hole is provided on the side wall of the knife seat 23, and a fixing hole 25 is provided on the handle of the cutter 6. The handle of the cutter 6 is embedded in the socket 24, and the cutter 6 is fixed by bolts passing through the threaded hole and the fixing hole 25; after cutting thin strips of material many times, the blade of the cutter 6 may be blunt or the blade may be broken. At this time, the cutter 6 needs to be replaced. The cutter 6 is fixed to the ring body 5 through the knife seat 23, so that the cutter 6 can be detached and replaced, which is convenient for the installation and disassembly of the cutter 6.

[0040] Reference Figure 4 The blade of the cutter 6 is set at an obtuse angle, and the front edge of the blade of the cutter 6 is provided with a sawtooth 26, and the tip of the sawtooth 26 is inclined toward the knife seat 23; the blade of the cutter 6 is set at an obtuse angle. When the cutter 6 cuts the thin strip material, the front blade of the cutter 6 will squeeze the thin strip material toward the limiting plate 2, which is also to further squeeze and stabilize the thin strip material and cut it off. At the same time, the cutter 6 cuts off multiple thin strips of material one by one instead of cutting them off at the same time, reducing the pressure when cutting the thin strip material and ensuring the smooth rotation of the rotating shaft 4.

[0041] Reference Figure 2 , a chamfer 27 is provided on the upper edge of the incision 3 on the support plate 1; a chamfer 27 is provided on the front edge of the upper incision 3 of the limit block; the limit plate 2 and the support plate 1 half wrap the thin strip material, and the incision 3 is opened on the limit plate 2 and the support plate 1. When the thin strip material is fed, the end of the thin strip material may hit the edge of the incision 3, causing the thin strip material to bend and unable to be laid flat on the support plate 1. For this reason, a chamfer 27 is provided on the edge of the incision 3, a chamfer 27 is provided on the upper edge of the incision 3 on the support plate 1, a chamfer 27 is provided on the front edge of the upper incision 3 of the limit block, and a chamfer 27 is also provided on the edge of the impact hole 20 to prevent the end of the thin strip material from hitting the edge of the incision 3.

[0042] Reference Figure 2 The lower half of both sides of the support plate 1 is provided with a surrounding plate 28, and the middle of the surface of the support plate 1 is concave; the surrounding plate 28 is provided to constrain the sliding path of the granular material to prevent the particles from being impacted by the gas and detached from the side of the support plate 1, causing the granular material to fall randomly. At the same time, the middle of the surface of the support plate 1 is concave to guide the flow of the granular material and concentrate it into the collection tank provided below the support plate 1.

[0043] Embodiment 2:

[0044] Reference Fig. 9, compared with Example 1, as another implementation of the present invention, the outer circle thread of the ring body 5 is rotatably connected with multiple fastening bolts 29, and the inner surface of the exhaust hole is provided with a thread; according to the length of the particles to be produced, the distance of the cutter 6 is set, or the excess cutter 6 is removed; the ring body 5 is fixed on the rotating shaft 4 by a screw, and the distance between adjacent ring bodies 5 is adjusted. At the same time, the exposed exhaust holes on the rotating shaft 4 are sealed by bolt threads, and the distance between the ring bodies 5 is adjusted to match the distance between the incisions 3 to ensure that the cutter 6 can smoothly pass through the incision 3.

[0045] Working principle: convey the thin strip material to the support plate 1 so that the end of the thin strip material extends from one side of the support plate 1 to the other side of the support plate 1. At this time, the feeding length of the thin strip material is the sum of the lengths of multiple particles, the feeding stroke of the thin strip material increases, and at the same time, the efficiency of the extrusion material of the extrusion module is also improved. The material is fed while ensuring that the extrusion efficiency of the extrusion module is fully utilized; when the thin strip material is pushed onto the support plate 1, drive the external motor, the motor drives the rotating shaft 4 to rotate through the pulley 7 and the belt, and the rotating shaft 4 drives the cutter 6 to rotate around the rotating shaft 4 through the ring body 5. When the end of the thin strip material extends from one side of the support plate 1 to the other side of the support plate 1, the cutter 6 rotates and is placed in the incision 3 The thin strip material is cut into multiple granular materials at one time, and then the granular materials slide away from the pallet 1 along the inclined surface of the pallet 1, and at the same time, the end of the thin strip material placed on one side of the pallet 1 is pushed to the other side of the pallet 1 again. At this time, the cutter 6 is rotated and placed in the incision 3, and the thin strip material is cut into multiple granular materials. By analogy, the thin strip material is pushed onto the pallet 1, and the cutter 6 rotates and cuts it. The cooperation between the supporting unit and the rotary cutting unit directly avoids the wear of parts caused by the rapid up and down alternating movement of the cutter 6, and the problem that the cutter 6 cannot be perpendicular to the surface of the material. At the same time, the cutter 6 produces more particles each time of rotary cutting, which improves the shredding efficiency while ensuring that the extrusion module is fully utilized.

[0046] When the thin strip material is pushed onto the support plate 1, there may be a gap between the thin strip material and the surface of the support plate 1, and the thin strip material is not completely attached to the surface of the support plate 1. When the cutter 6 is rotated to the incision 3 position, the cutter 6 first squeezes the thin strip material, squeezes the thin strip material onto the support plate 1 and then cuts it. At this time, the thin strip material first hits the support plate 1, and then the cutter 6 cuts the thin strip material. When the thin strip material hits the support plate 1, the impact force generated is transmitted to the blade of the cutter 6 through the thin strip material, which may break the blade. For this reason, a device is provided to press the thin strip material on the support plate in advance. 1; the rotating shaft 4 rotates to drive the synchronous pulley 7 fixed on its surface, and at the same time, the synchronous pulley 7 connected to the synchronous belt drive cam 13 rotates, the cam 13 rotates, and intermittently squeezes the baffle 12, the baffle 12 intermittently pushes down the pressing block 9, the pressing block 9 moves up and down along the limit ring 10, the pressing block 9 pushes down the pressing plate 8, and the pressing plate 8 presses the thin strip material on the support plate 1, that is, before the cutter 6 cuts the thin strip material, the pressing plate 8 stabilizes the thin strip material on the support plate 1, reducing the possibility that the thin strip material hits the support plate 1 and vibrates to damage the blade of the cutter 6;

[0047] A clamping strip 16 is provided, and the edge of the clamping strip 16 is blade-shaped. When the pressing plate 8 presses the thin strip material, the clamping strip 16 squeezes and fixes the thin strip material, further improving the stability of the thin strip material on the support plate 1, preventing the cutter 6 from sliding along the support plate 1 and sliding off the blade of the cutter 6 when cutting the thin strip material, resulting in ineffective cutting of the thin strip material; the granular material produced by the cutting slides off along the slope of the support plate 1, relying on the granular material to slide off the support plate 1 by itself, which is inefficient and will affect the subsequent feeding speed of the thin strip material extending to the support plate 1, and for this purpose, an air jet 19 is provided; the external air pipe is connected to the external air pump, and the gas is injected into the air jet pipe 19 along the external air pipe and the exhaust hole. After the cutter 6 cuts the thin strip material, the subsequent air jet pipe 19 is opposite to the impact hole 20. At this time, the gas penetrates the impact hole 20 and impacts the granular material slowly sliding down on the support plate 1, impacting and discharging it away from the incision 3 position, facilitating the subsequent feeding speed of the thin strip material;

[0048] The cover body 18 is fixed, the rotating shaft 4 rotates, the end of the rotating shaft 4 is rotatably connected to the cover body 18, and the through hole 17 is intermittently connected to the waist-shaped hole 22; when the cutter 6 cuts the thin strip material, the through hole 17 connected to the jet pipe 19 on the back of the cutter 6 is opposite to the waist-shaped hole 22, and the gas is injected into the through hole 17 from the waist-shaped hole 22, and is ejected from the jet pipe 19 connected to the through hole 17, and the gas impacts and discharges the granular material on the support plate 1; the arrangement of the disc 21 and the waist-shaped hole 22 allows the gas to be accurately injected into a through hole 17, while ensuring that the working power of the air pump remains unchanged, so that when the gas is discharged from the jet hole, the impact force is greater, and the impact effect of the granular material is more obvious;

[0049] After cutting the thin strip material many times, the blade of the cutter 6 may become blunt or the blade may break. At this time, the cutter 6 needs to be replaced. The cutter 6 is fixed to the ring body 5 by the blade holder 23, so that the cutter 6 can be detached and replaced, which is convenient for the installation and disassembly of the cutter 6; the blade part of the cutter 6 is set at an obtuse angle. When the cutter 6 cuts the thin strip material, the front blade of the cutter 6 will squeeze the thin strip material toward the limiting plate 2, which is also to further squeeze and stabilize the thin strip material and cut it off. At the same time, the cutter 6 cuts off multiple thin strip materials one by one instead of cutting them off at the same time, reducing the pressure when cutting the thin strip material and ensuring the smooth rotation of the rotating shaft 4; the limiting plate 2 and the supporting plate 1 half wrap the thin strip material, and the limiting plate 2 and the supporting plate 1 are provided with incisions 3. When the thin strip material is fed, the end of the thin strip material may hit the edge of the incision 3, causing the thin strip material to bend and unable to be laid flat on the support plate 1. For this reason, a chamfer 27 is set at the edge of the incision 3, a chamfer 27 is set at the upper edge of the incision 3 on the support plate 1, a chamfer 27 is set at the front edge of the upper incision 3 of the limit block, and a chamfer 27 is also set at the edge of the impact hole 20 to avoid the end of the thin strip material from hitting the edge of the incision 3; a surrounding plate 28 is set to constrain the sliding path of the granular material to prevent the particles from being impacted by the gas and detached from the side of the support plate 1, causing the granular material to fall arbitrarily. At the same time, the middle of the surface of the support plate 1 is concave to guide the flow of the granular material and concentrate it to flow into the collecting trough set below the support plate 1.

[0050] Obviously, the above embodiments are merely examples for clear explanation and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from them are still within the protection scope of the invention.

Claims

1. A plastic granulation device, comprising a melting module, an extrusion module, a cooling module and a cutting module; the melting module comprises a melting barrel (101), the extrusion module comprises an extrusion screw, the extrusion screw is rotatably mounted in the melting barrel (101), the cooling module comprises a water cooling tank (102), the inlet end of the water cooling tank (102) is mounted at the position of a spray nozzle (103) of the melting barrel (101), a plurality of the spray nozzles (103) are provided, the spray nozzles (103) are arranged in a row, and each spray nozzle ( 103) is cylindrical, and a shredding module is installed at the other end of the water-cooling tank (102); the shredding module includes a supporting unit and a peeling unit; the supporting unit includes a support plate (1), and the inlet end of the support plate (1) is installed at the outlet position of the water-cooling tank (102); the inner side wall at the other end of the water-cooling tank (102) is provided with upper and lower mounted conveying wheels (104), and the cooled and solidified material passes through the gap between the upper and lower conveying wheels (104), and the conveying wheels (104) rub the material and push it onto the support plate (1); the characteristics are: The cutting module comprises a supporting unit and a peeling unit; the supporting unit comprises a support plate (1), the support plate (1) is arranged to be tilted downward, the high end of the support plate (1) is fixedly connected to a limit plate (2), and a plurality of cuts (3) are evenly provided on the limit plate (2) and the support plate (1); the peeling unit is arranged on the back side of the limit plate (2); the peeling unit comprises a rotating shaft (4), a ring body (5) is fixedly connected to the rotating shaft (4), a plurality of cutters (6) are fixedly connected to the ring body (5), the cutters (6) are arranged one by one opposite to the cuts (3), and a pulley (7) is fixedly connected to the end of the rotating shaft (4), and the pulley (7) is connected to an external driving component through a belt drive; A pressing unit is provided between the support plate (1) and the limit plate (2); the pressing unit comprises a pressing plate (8), the pressing plate (8) is parallel to the support plate (1), pressing blocks (9) are fixedly connected to both ends of the upper surface of the pressing plate (8), the outer ring of the pressing block (9) is provided with a limit ring (10), the limit ring (10) is fixedly connected to both sides of the upper surface of the limit plate (2), the upper surface of the limit ring (10) is fixedly connected to a compression spring (11), the end of the compression spring (11) is fixedly connected to a baffle (12), the baffle (12) is fixedly connected to the upper outer ring of the pressing block (9), the upper end of the baffle (12) is provided with a cam (13), the outer side of the cam (13) is fixedly connected to a synchronous pulley (14), the synchronous pulley (14) is connected to the synchronous pulley (14) arranged on the inner side of the end of the rotating shaft (4) through a synchronous belt; the cam (13) is supported at both ends of the limit plate (2) through a support rod (15); The rotating shaft (4) is provided with a plurality of through holes (17) along its axial direction, the through holes (17) are arranged in a circular array inside the rotating shaft (4), the end of the rotating shaft (4) is rotatably connected to a hollow cover body (18), the cover body (18) is connected to an external air pipe; a plurality of exhaust holes are provided on the surface of the rotating shaft (4), the exhaust holes are respectively connected to the through holes (17), a plurality of jet pipes (19) are provided on the surface of the ring body (5), the jet pipes (19) are respectively connected to the exhaust holes, and the jet pipes (19) are fixed to the back of the cutter (6); a plurality of impact holes (20) are provided on the back of the limiting plate (2), the impact holes (20) penetrate to the front side wall surface of the limiting plate (2), and each impact hole (20) is arranged in half at the position of the incision (3); The outer ring of each ring body (5) is provided with a knife seat (23) for fixing the cutter (6), the end surface of the knife seat (23) is provided with an insertion hole (24), the side wall of the knife seat (23) is provided with a threaded hole, the handle of the cutter (6) is provided with a fixing hole (25), the handle of the cutter (6) is embedded in the insertion hole (24), and the cutter (6) is fixed by a bolt penetrating the threaded hole and the fixing hole (25); The blade of the cutter (6) is arranged at an obtuse angle, and the front edge of the blade of the cutter (6) is provided with saw teeth (26), with the tip of the saw teeth (26) being arranged inclined in the direction of the knife seat (23).

2. A plastic granulation equipment according to claim 1, characterized in that: A plurality of clamping strips (16) are provided on the lower surface of the pressing plate (8), and the clamping strips (16) are arranged along the length direction of the pressing plate (8).

3. A plastic granulation equipment according to claim 1, characterized in that: A disc (21) is fixedly connected inside the cover body (18), and a waist-shaped hole (22) is opened at an eccentric position on the disc (21); the end of the rotating shaft (4) is rotatably connected to the surface of the disc (21), and the through hole (17) at the end of the rotating shaft (4) is intermittently connected to the waist-shaped hole (22).

4. A plastic granulation equipment according to claim 1, characterized in that: The upper edge of the cutout (3) on the support plate (1) is provided with a chamfer (27); and the front edge of the cutout (3) on the limiting plate (2) is provided with a chamfer (27).

5. A plastic granulation equipment according to claim 4, characterized in that: The lower parts of both sides of the support plate (1) are provided with enclosure plates (28), and the middle of the surface of the support plate (1) is concave.

6. A plastic granulation equipment according to claim 1, characterized in that: The outer ring of the ring body (5) is rotatably connected to a plurality of fastening bolts (29), and the inner surface of the exhaust hole is provided with a thread.

Images