阅读说明：本技术 用于塑料泡沫成型的同步切断构件 (Synchronous cutting component for plastic foam forming ) 是由 祝磊 张继美 于 2019-10-30 设计创作，主要内容包括：本发明提供了用于塑料泡沫成型的同步切断构件,其包括包括安装筒(110)、与安装筒(110)一端开口同轴固定连接的环形对接盘(111)、与安装筒(110)另一端开口同轴固定连接的固定环(112),安装筒(110)上设置有挤料机构(120)以及切断机构(130),挤料机构(120)通过对接盘(111)与塑料熔融主机连接接通并且在塑料熔融主机对熔融态塑料压力的作用下使其由挤出机构(120)呈条状挤出,挤出机构(120)可沿着塑料的挤出方向进行伸缩运动并且伸缩的速度等于塑料的挤出速度,切断机构(130)在挤出机构(120)前伸运动的终点对挤出的塑料进行切粒处理,其优点在于,使塑料颗粒的切断端面齐平并且保证塑料颗粒的质地均匀。(The invention provides a synchronous cutting component for plastic foam molding, which comprises an installation cylinder (110), an annular butt joint disc (111) coaxially and fixedly connected with an opening at one end of the installation cylinder (110), and a fixing ring (112) coaxially and fixedly connected with an opening at the other end of the installation cylinder (110), wherein the installation cylinder (110) is provided with a material extruding mechanism (120) and a cutting mechanism (130), the material extruding mechanism (120) is communicated with a plastic melting host machine through the butt joint disc (111) and is extruded out in a strip shape by the extruding mechanism (120) under the action of the pressure of the plastic melting host machine on molten state plastics, the extruding mechanism (120) can perform telescopic motion along the extrusion direction of the plastics, the telescopic speed is equal to the extrusion speed of the plastics, and the cutting mechanism (130) performs grain cutting treatment on the extruded plastics at the endpoint of the forward extension motion of the extruding mechanism (120), and has the advantages that, the cut end faces of the plastic granules are made flush and the texture of the plastic granules is guaranteed to be uniform.)

1. Synchronous cutting element for the formation of plastic foam, characterized in that: the plastic extrusion device comprises an installation cylinder (110), an annular butt joint disc (111) coaxially and fixedly connected with an opening at one end of the installation cylinder (110), and a fixing ring (112) coaxially and fixedly connected with an opening at the other end of the installation cylinder (110), wherein the installation cylinder (110) is provided with an extrusion mechanism (120) and a cutting mechanism (130), the extrusion mechanism (120) is connected and communicated with a plastic melting host machine through the butt joint disc (111) and is extruded in a strip shape by the extrusion mechanism (120) under the action of the pressure of the plastic melting host machine on molten plastic, the extrusion mechanism (120) can perform telescopic motion along the extrusion direction of the plastic, the telescopic speed is equal to the extrusion speed of the plastic, and the cutting mechanism (130) performs grain cutting treatment on the extruded plastic at the endpoint of the forward extension motion of the extrusion mechanism (120);

the material extruding mechanism (120) comprises a fixed disc (121) coaxially embedded on the inner circular surface of a fixed ring (112), a fixed cylinder (122) is coaxially and fixedly arranged on one end surface of the fixed disc (121) close to a butt joint disc (111), the diameter of the fixed cylinder (122) is smaller than that of the fixed disc (121), an external step I (123) is arranged on the outer circular surface of one end of the fixed cylinder (122) close to the butt joint disc (111), a limit disc I (124) with the same diameter as the fixed cylinder is coaxially and fixedly arranged on one end surface of the fixed cylinder (122) close to the butt joint disc (111), the diameter of the limit disc I (124) is smaller than that of the external step I (123), an internal step I (116) is arranged on one end of the butt joint disc (111) close to one end of the fixed disc (121), the diameter of the internal step I (116) is smaller than that of the inner circular surface of the butt joint disc (111), and the external step I (123) is matched with the internal step I (116), the fixed cylinder (122) is internally provided with a telescopic cylinder (126) which penetrates through the fixed disc (121) and extends to the outside of the installation cylinder (110), the telescopic cylinder (126) is matched with the fixed cylinder (122) and forms sliding guide fit along the axial direction of the installation cylinder (110), the extending end of the telescopic cylinder (126) is coaxially and fixedly provided with a telescopic disc (125), the telescopic disc (125) and the fixed disc (121) have the same diameter, the telescopic disc (125) is provided with extrusion holes (129) which are parallel to the axial direction of the telescopic disc and are eccentrically arranged, the extrusion holes (129) are provided with a plurality of butt joint holes (115) which are parallel to the axial direction of the butt joint disc (111) and correspond to the extrusion holes (129) one by one, and are arranged in an array along the circumferential direction in which the telescopic disc (125) is positioned, one end face, close to the fixed disc (121), of the butt joint disc (111) is coaxially provided with an annular boss (113), the butt joint holes, a copper extrusion pipe (128) used for connecting and connecting the butt joint hole (115) and the extrusion hole (129) is arranged between the butt joint hole (115) and the extrusion hole, and the extrusion pipe (128) movably penetrates through the fixed disc (121).

2. The synchronized severing member for plastic foam molding according to claim 1, characterized in that: the input end of the extruding pipe (128) is inserted into the butt joint hole (115), the two ends form sealed sliding guide fit along the axial direction of the extruding pipe and the butt joint hole, and the output end of the extruding pipe (128) is fixedly connected with the telescopic disc (125) and is in butt joint connection with the telescopic disc.

3. The synchronized severing member for plastic foam molding according to claim 1, characterized in that: a limiting assembly is arranged between one end, deviating from the fixed disc (121), of the fixed cylinder (122) and one end, deviating from the telescopic disc (125), of the telescopic cylinder (126), the limiting assembly comprises a built-in step II (127 a) which is arranged on the inner circle face, deviating from one end of the fixed disc (121), of the fixed cylinder (122), the diameter of the built-in step II (127 a) is larger than that of the inner circle face of the fixed cylinder (122), a limiting disc II (127 b) which is coaxially and fixedly installed on one end, deviating from the telescopic disc (125), of the telescopic cylinder (126), the limiting disc II (127 b) is matched with the built-in step II (127 a), the limiting disc II (127 b) can slide along the axial direction of the installation cylinder (110) in the built-in step II (127 a), and the sliding stroke of the limiting disc II (127 b) in the built-in step II (127 a) is equal to the telescopic movement.

4. The synchronized severing member for plastic foam molding according to claim 1, characterized in that: cutting mechanism (130) including seting up in flexible dish (125) deviate from fixed disk (121) terminal surface go up spout (131), spout (131) run through to its disc of excircle face by the middle part position of flexible dish (125), the contained angle that radially constitutes of spout (131) and flexible dish (125) is the acute angle and this acute angle size is 20 to 30, spout (131) are provided with a plurality ofly and with extrude hole (129) and arrange in turn, be provided with in spout (131) and constitute slide guide complex slider (132) rather than, be provided with on slider (132) fixedly and deviate from fixed disk (121) a terminal surface with flexible dish (125) and laminate cutter (133), cutter (133) are close to flexible dish (125) central point position one end and set up into V type edge of a knife (134) and extrude hole (129) one-to-one-to-one, cutter (133) deviate from flexible dish (125) central point position one end and fixedly are provided with handle of an outside extension (.

5. The synchronized severing member for plastic foam molding according to claim 4, characterized in that: the cutting mechanism (130) further comprises a first mounting ring (136) which is coaxially and fixedly arranged on one end face, close to the telescopic disc (125), of the fixed disc (121), a second mounting ring (137) which is coaxially arranged on one end face, close to the fixed disc (121), of the telescopic disc (125), the first mounting ring (136) and the fixed disc (121) are arranged in an equal diameter mode, the second mounting ring (137) and the telescopic disc (125) are arranged in an equal diameter mode, a driving arm (138) used for connecting the first mounting ring (137) and the fixed disc (135) is arranged between one end face, close to the first mounting ring (137), of the first mounting ring (136), one end of the driving arm (138) and one end, away from the cutter (133), of the cutter handle (135) are hinged and connected, the axial direction of the hinge shaft formed by the hinged connection of the driving arm (138) and the cutter handle (135) is parallel to the tangential direction of the circumference, the hinge shaft direction of the mounting ring (136) is located, the other end The axial direction of a hinge shaft formed by the joint is parallel to the tangential direction of the circumference where the mounting ring I (136) is located, a supporting arm (139) used for connecting the mounting ring II (137) and the driving arm (138) is arranged between one end face of the mounting ring I (136) and the middle position of the driving arm (138) along the length direction of the mounting ring I, one end of the supporting arm (139) is hinged with the driving arm (138), the axial direction of the hinge shaft formed by the hinged joint of the supporting arm (139) and the driving arm (138) is parallel to the tangential direction of the circumference where the mounting ring II (137) is located, the other end of the hinge shaft formed by the hinged joint of the supporting arm (139) and the mounting ring II (137) is hinged and connected with the outer diameter edge of the mounting ring II (137) and the axial.

Technical Field

The invention relates to the technical field of plastic molding processing, in particular to a synchronous cutting component for plastic foam molding.

Background

At present, a plastic granulator mainly comprises a plastic melting host machine and a multi-cavity extrusion die matched with the plastic melting host machine, a rotatable blade is arranged at an extrusion port of the extrusion die, and the extruded strip plastic is granulated through the rotation of the blade, and the problem is that the strip plastic is continuously extruded outwards at the moment when the blade is contacted with the extruded strip plastic to the process of cutting the section of plastic, so that the end surface of the plastic granule cut by the blade is an inclined plane and the texture of the plastic particles is not uniform, the subsequent processing of the plastic particles is influenced, and in order to overcome the defects, the synchronous cutting component for plastic particle molding is ingenious in structure, simple in principle, convenient to operate and use, and capable of enabling the cutting end faces of plastic particles to be flush and enabling the texture of the plastic particles to be uniform.

Disclosure of Invention

In order to solve the defects of the prior art, the invention aims to provide the synchronous cutting component made of the plastic particles, which has the advantages of ingenious structure, simple principle, convenient operation and use, and capability of making the cutting end surfaces of the plastic particles flush and making the texture of the plastic particles uniform.

In order to achieve the technical purpose, the technical scheme adopted by the invention is as follows.

The synchronous cutting component for plastic foam molding comprises a mounting cylinder (110), an annular butt joint disc (111) coaxially and fixedly connected with an opening at one end of the mounting cylinder (110), and a fixing ring (112) coaxially and fixedly connected with an opening at the other end of the mounting cylinder (110), wherein the mounting cylinder (110) is provided with a material extruding mechanism (120) and a cutting mechanism (130), the material extruding mechanism (120) is connected and communicated with a plastic melting host machine through the butt joint disc (111) and is extruded in a strip shape by the extruding mechanism (120) under the action of the plastic melting host machine on molten plastic pressure, the extruding mechanism (120) can perform telescopic motion along the extrusion direction of plastic, the telescopic speed is equal to the extrusion speed of the plastic, and the cutting mechanism (130) performs grain cutting treatment on the extruded plastic at the endpoint of the forward extension motion of the extruding mechanism (120);

the material extruding mechanism (120) comprises a fixed disc (121) coaxially embedded on the inner circular surface of a fixed ring (112), a fixed cylinder (122) is coaxially and fixedly arranged on one end surface of the fixed disc (121) close to a butt joint disc (111), the diameter of the fixed cylinder (122) is smaller than that of the fixed disc (121), an external step I (123) is arranged on the outer circular surface of one end of the fixed cylinder (122) close to the butt joint disc (111), a limit disc I (124) with the same diameter as the fixed cylinder is coaxially and fixedly arranged on one end surface of the fixed cylinder (122) close to the butt joint disc (111), the diameter of the limit disc I (124) is smaller than that of the external step I (123), an internal step I (116) is arranged on one end of the butt joint disc (111) close to one end of the fixed disc (121), the diameter of the internal step I (116) is smaller than that of the inner circular surface of the butt joint disc (111), and the external step I (123) is matched with the internal step I (116), the fixed cylinder (122) is internally provided with a telescopic cylinder (126) which penetrates through the fixed disc (121) and extends to the outside of the installation cylinder (110), the telescopic cylinder (126) is matched with the fixed cylinder (122) and forms sliding guide fit along the axial direction of the installation cylinder (110), the extending end of the telescopic cylinder (126) is coaxially and fixedly provided with a telescopic disc (125), the telescopic disc (125) and the fixed disc (121) have the same diameter, the telescopic disc (125) is provided with extrusion holes (129) which are parallel to the axial direction of the telescopic disc and are eccentrically arranged, the extrusion holes (129) are provided with a plurality of butt joint holes (115) which are parallel to the axial direction of the butt joint disc (111) and correspond to the extrusion holes (129) one by one, and are arranged in an array along the circumferential direction in which the telescopic disc (125) is positioned, one end face, close to the fixed disc (121), of the butt joint disc (111) is coaxially provided with an annular boss (113), the butt joint holes, a copper extrusion pipe (128) used for connecting and connecting the butt joint hole (115) and the extrusion hole (129) is arranged between the butt joint hole (115) and the extrusion hole, and the extrusion pipe (128) movably penetrates through the fixed disc (121).

As a further optimization or improvement of the present solution.

The input end of the extruding pipe (128) is inserted into the butt joint hole (115), the two ends form sealed sliding guide fit along the axial direction of the extruding pipe and the butt joint hole, and the output end of the extruding pipe (128) is fixedly connected with the telescopic disc (125) and is in butt joint connection with the telescopic disc.

As a further optimization or improvement of the present solution.

A limiting assembly is arranged between one end, deviating from the fixed disc (121), of the fixed cylinder (122) and one end, deviating from the telescopic disc (125), of the telescopic cylinder (126), the limiting assembly comprises a built-in step II (127 a) which is arranged on the inner circle face, deviating from one end of the fixed disc (121), of the fixed cylinder (122), the diameter of the built-in step II (127 a) is larger than that of the inner circle face of the fixed cylinder (122), a limiting disc II (127 b) which is coaxially and fixedly installed on one end, deviating from the telescopic disc (125), of the telescopic cylinder (126), the limiting disc II (127 b) is matched with the built-in step II (127 a), the limiting disc II (127 b) can slide along the axial direction of the installation cylinder (110) in the built-in step II (127 a), and the sliding stroke of the limiting disc II (127 b) in the built-in step II (127 a) is equal to the telescopic movement.

As a further optimization or improvement of the present solution.

Cutting mechanism (130) including seting up in flexible dish (125) deviate from fixed disk (121) terminal surface go up spout (131), spout (131) run through to its disc of excircle face by the middle part position of flexible dish (125), the contained angle that radially constitutes of spout (131) and flexible dish (125) is the acute angle and this acute angle size is 20 to 30, spout (131) are provided with a plurality ofly and with extrude hole (129) and arrange in turn, be provided with in spout (131) and constitute slide guide complex slider (132) rather than, be provided with on slider (132) fixedly and deviate from fixed disk (121) a terminal surface with flexible dish (125) and laminate cutter (133), cutter (133) are close to flexible dish (125) central point position one end and set up into V type edge of a knife (134) and extrude hole (129) one-to-one-to-one, cutter (133) deviate from flexible dish (125) central point position one end and fixedly are provided with handle of an outside extension (.

As a further optimization or improvement of the present solution.

The cutting mechanism (130) further comprises a first mounting ring (136) which is coaxially and fixedly arranged on one end face, close to the telescopic disc (125), of the fixed disc (121), a second mounting ring (137) which is coaxially arranged on one end face, close to the fixed disc (121), of the telescopic disc (125), the first mounting ring (136) and the fixed disc (121) are arranged in an equal diameter mode, the second mounting ring (137) and the telescopic disc (125) are arranged in an equal diameter mode, a driving arm (138) used for connecting the first mounting ring (137) and the fixed disc (135) is arranged between one end face, close to the first mounting ring (137), of the first mounting ring (136), one end of the driving arm (138) and one end, away from the cutter (133), of the cutter handle (135) are hinged and connected, the axial direction of the hinge shaft formed by the hinged connection of the driving arm (138) and the cutter handle (135) is parallel to the tangential direction of the circumference, the hinge shaft direction of the mounting ring (136) is located, the other end The axial direction of a hinge shaft formed by the joint is parallel to the tangential direction of the circumference where the mounting ring I (136) is located, a supporting arm (139) used for connecting the mounting ring II (137) and the driving arm (138) is arranged between one end face of the mounting ring I (136) and the middle position of the driving arm (138) along the length direction of the mounting ring I, one end of the supporting arm (139) is hinged with the driving arm (138), the axial direction of the hinge shaft formed by the hinged joint of the supporting arm (139) and the driving arm (138) is parallel to the tangential direction of the circumference where the mounting ring II (137) is located, the other end of the hinge shaft formed by the hinged joint of the supporting arm (139) and the mounting ring II (137) is hinged and connected with the outer diameter edge of the mounting ring II (137) and the axial.

Compared with the prior art, the plastic particle cutting device has the advantages of ingenious structure, simple principle, convenience in operation and use, capability of enabling the cut end faces of plastic particles to be flush and the plastic particles to be uniform in texture, synchronous movement of the extrusion pipe and the extruded plastic along the extrusion direction of the extrusion pipe, and cutting processing of the cutters which move synchronously at the end point of forward extension movement of the extrusion pipe, so that the cut end faces of the plastic particles are flush.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic view of the overall structure of the present invention.

FIG. 3 is a schematic view of the dicing process of the present invention.

FIG. 4 is a schematic view of the dicing process of the present invention.

Fig. 5 is a schematic structural diagram of the docking device.

Fig. 6 is a matching view of the mounting cylinder, the docking tray and the fixing ring.

Fig. 7 is a matching view of the mounting cylinder, the docking tray and the fixing ring.

Fig. 8 is a combination view of the extruding mechanism and the cutting mechanism.

Fig. 9 is a matching view of the extruding mechanism and the butt-joint tray.

Fig. 10 is a matching view of the extruding mechanism and the butt-joint tray.

Fig. 11 is a matching view of the extruding mechanism and the butt-joint tray.

Fig. 12 is a partial structural schematic diagram of the material extruding mechanism.

Fig. 13 is a partial structural schematic diagram of the material extruding mechanism.

Fig. 14 is a schematic view of a partial explosion of the material extruding mechanism.

Fig. 15 is a combination view of the extruding mechanism and the cutting mechanism.

Fig. 16 is a view showing the engagement of the cutting mechanism with the retractable tray.

Fig. 17 is a partial schematic configuration diagram of the cutting mechanism.

Fig. 18 is a partial schematic configuration diagram of the cutting mechanism.

Fig. 19 is a partial schematic configuration diagram of the cutting mechanism.

Fig. 20 is a matching view of the linkage mechanism, the driving mechanism and the extruding pipe.

Fig. 21 is a matching view of the linkage mechanism and the extruding pipe.

FIG. 22 is a schematic view of the structure of the extruding pipe

Fig. 23 is a matching view of the linkage mechanism and the extruding pipe.

Fig. 24 is a matching view of the linkage mechanism and the extruding pipe.

Fig. 25 is a view showing the combination of the driving mechanism and the link mechanism.

Fig. 26 is a view showing the combination of the driving mechanism and the link mechanism.

FIG. 27 is a view of the mating of the drive mechanism to the docking tray.

Fig. 28 is a partial mating view of the drive mechanism and the linkage mechanism.

Fig. 29 is a schematic structural view of the drive mechanism.

Labeled as:

100. a docking device; 110. mounting the cylinder; 111. a docking tray; 112. a fixing ring; 113. a boss; 114. a limiting step; 115. a butt joint hole; 116. a first built-in step; 120. a material extruding mechanism; 121. fixing the disc; 122. a fixed cylinder; 123. a first external step; 124. a first limiting disc; 125. a telescopic disc; 126. a telescopic cylinder; 127a and a built-in step II; 127b and a second limiting disc; 128. extruding a material pipe; 128a and an external step II; 129. an extrusion orifice; 130. a cutting mechanism; 131. a chute; 132. a slider; 133. a cutter; 134. a knife edge; 135. a knife handle; 136. mounting a ring I; 137. a second mounting ring; 138. a drive arm; 139. a support arm;

200. a power plant; 210. a linkage mechanism; 211. a linkage disk; 212. a compression disc; 213. a bolt; 214. a convex column; 215. a return spring; 220. a drive mechanism; 221. pushing the ring; 222. a tip; 223. a card slot; 224. a snap ring; 225. a motor; 226. a driving gear; 227. a driven ring gear.

Detailed Description

Referring to fig. 1-29, a synchronous cutting machine head for plastic particle molding comprises a docking device 100 and a power device 200, wherein the docking device 100 comprises a mounting cylinder 110, an annular docking disk 111 coaxially and fixedly connected with an opening at one end of the mounting cylinder 110, and a fixing ring 112 coaxially and fixedly connected with an opening at the other end of the mounting cylinder 110, the mounting cylinder 110 is provided with a material extruding mechanism 120 and a cutting mechanism 130, the material extruding mechanism 120 is connected and communicated with a plastic melting host through the docking disk 111 and is extruded in a strip shape by the extruding mechanism 120 under the action of pressure of the plastic melting host on molten plastic, the extruding mechanism 120 can perform telescopic motion along the extrusion direction of the plastic and the telescopic speed is equal to the extrusion speed of the plastic, the cutting mechanism 130 performs cutting processing on the extruded plastic at the end point of the forward movement of the extruding mechanism 120, the power device 200 is used for providing driving power for the extruding mechanism 120 and the cutting mechanism 130 and when the extruding mechanism 120 moves to the end point of the forward movement, causing the cutting mechanism 130 to activate to cut the extruded plastic.

In the working process, the input end of the extruding mechanism 120 is connected and communicated with the plastic melting host machine through the butt joint disc 111, the plastic melting host machine pressurizes the molten plastic in the plastic melting host machine and enters the input end of the extruding mechanism 120 through the butt joint disc 111, the molten plastic is cooled and formed in the extruding mechanism 120 and is extruded into strip-shaped plastic through the output end of the extruding mechanism, in the process, the extruding mechanism 120 performs telescopic motion along the extruding direction of the plastic, the speed of the telescopic motion is equal to the speed of the plastic extrusion, when the extruding mechanism 120 moves to the end point of the forward extending motion, the cutting mechanism 130 performs grain cutting treatment on the extruded plastic, then the cutting mechanism 130 is rapidly reset, the extruding mechanism 120 performs reverse retracting motion and extrudes the plastic outwards at twice speed, and the reciprocating motion is performed, so that the cutting mechanism 130 performs grain cutting treatment on the extruded plastic, and the advantage is that, ensuring that the cut end faces of the plastic granules are flush and that the plastic granules are homogeneous in texture.

The material extruding mechanism 120 comprises a fixed disc 121 coaxially embedded on the inner circular surface of the fixed ring 112, a fixed cylinder 122 is coaxially and fixedly arranged on one end surface of the fixed disc 121 close to the butt-joint disc 111, the diameter of the fixed cylinder 122 is smaller than that of the fixed disc 121, an external step 123 is arranged on the outer circular surface of the fixed cylinder 122 close to one end of the butt-joint disc 111, a limit disc 124 with the same diameter as that of the fixed cylinder 122 is coaxially and fixedly arranged on one end surface of the fixed cylinder 122 close to the butt-joint disc 111, the diameter of the limit disc 124 is smaller than that of the external step 123, an internal step 116 is arranged on the inner circular surface of the butt-joint disc 111 close to one end of the fixed disc 121, the diameter of the internal step 116 is smaller than that of the inner circular surface of the butt-joint disc 111, the external step 123 is matched with the internal step 116 to limit and fix the fixed cylinder 122, and a, the telescopic cylinder 126 is matched with the fixed cylinder 122 and forms sliding guide fit along the axial direction of the installation cylinder 110, an extension end of the telescopic cylinder 126 is coaxially and fixedly provided with a telescopic disc 125, the telescopic disc 125 and the fixed disc 121 have the same diameter, the telescopic disc 125 is provided with a plurality of extrusion holes 129 which are parallel to the axial direction of the telescopic disc 125 and are eccentrically arranged, the extrusion holes 129 are arranged in an array manner along the circumferential direction of the telescopic disc 125, an annular boss 113 is coaxially arranged on one end face, close to the fixed disc 121, of the butt joint disc 111, the boss 113 is provided with butt joint holes 115 which are parallel to the axial direction of the butt joint disc 111 and are in one-to-one correspondence with the extrusion holes 129, the butt joint holes 115 are connected and communicated with a plastic melting host, a copper extrusion pipe 128 which is used for connecting and communicating the copper extrusion pipe 128 is arranged between the.

Specifically, in order to enable the extrusion pipe 128 to connect the butt joint hole 115 with the extrusion hole 129 and to be capable of performing telescopic movement along with the telescopic disc 125, the input end of the extrusion pipe 128 is inserted into the butt joint hole 115 and forms a sealed sliding guide fit along the axial direction of the butt joint hole 115, the output end of the extrusion pipe 128 is fixedly connected with the telescopic disc 125 and is connected with the telescopic disc 125 in a butt joint manner, and the extrusion speed of the plastic relative to the extrusion pipe 128 is zero by driving the extrusion pipe 128 to be equal to the outward discharge flow speed of the plastic under the action of pressure.

More specifically, in order to limit the sliding of the telescopic cylinder 126 along the fixed cylinder 122, and prevent the telescopic cylinder 126 and the fixed cylinder 122 from falling off, the extruding pipe 128 and the butt hole 115 from falling off, a limiting assembly is arranged between one end, away from the fixed disc 121, of the fixed cylinder 122 and one end, away from the telescopic disc 125, of the telescopic cylinder 126, and comprises a second built-in step 127a arranged on the inner circular surface of one end, away from the fixed disc 121, of the fixed cylinder 122, the diameter of the second built-in step 127a is larger than that of the inner circular surface of the fixed cylinder 122, and a second limiting disc 127b coaxially and fixedly arranged on one end, away from the telescopic disc 125, of the telescopic cylinder 126, the second limiting disc 127b is matched with the second built-in step 127a, the second limiting disc 127b can slide in the second built-in step 127a along the axial direction of the mounting cylinder 110, and the sliding stroke of the second limiting disc 127b in the second built-in step 127 a.

The cutting mechanism 130 comprises a chute 131 arranged on one end face of the telescopic disc 125 departing from the fixed disc 121, the chute 131 penetrates from the middle position of the telescopic disc 125 to the outer circular face of the telescopic disc, an included angle formed by the chute 131 and the telescopic disc 125 in the radial direction is an acute angle, the acute angle is 20-30 degrees, the chute 131 is provided with a plurality of blades 134 which are alternately arranged with the extrusion holes 129, a sliding block 132 which is matched with the sliding block in a sliding guide manner is arranged in the chute 131, a cutter 133 which is jointed with one end face of the telescopic disc 125 departing from the fixed disc 121 is fixedly arranged on the sliding block 132, one end of the cutter 133 close to the central position of the telescopic disc 125 is provided with a V-shaped blade 134, the blade 134 corresponds to the extrusion holes 129 one by one to one, one end of the cutter handle which deviates from the central position of the telescopic disc 125 is fixedly provided with an outward-extending 135, the sliding block 132 is enabled to slide along the chute 131 close to the, the purpose of the radial arrangement of the sliding guide direction offset retractable disk 125 between runner 131 and slider 132 is to enable knife edge 134 to create cutting forces on the plastic, not just "hard chopping".

Specifically, in order to enable the cutter 133 to perform granulation processing on the plastic extruded from the extrusion hole 129 at the end point of the forward extension movement of the extrusion pipe 128, the cutting mechanism 130 further includes a first mounting ring 136 coaxially and fixedly arranged on one end face of the fixed disc 121 close to the telescopic disc 125, a second mounting ring 137 coaxially and coaxially arranged on one end face of the telescopic disc 125 close to the fixed disc 121, the first mounting ring 136 and the fixed disc 121 are arranged in the same diameter, the second mounting ring 137 and the telescopic disc 125 are arranged in the same diameter, a driving arm 138 for connecting the first mounting ring 136 and the handle 135 is arranged between one end face of the first mounting ring 136 close to the second mounting ring 137, one end of the driving arm 138 is hinged to one end of the handle 135 away from the cutter 133, the axial direction of a hinge shaft formed at the hinge joint of the driving arm 138 and the handle 135 is parallel to the tangential direction of the circumference where the first mounting ring 136 is located, the other end of the driving arm 138 is hinged to the first The axial direction of the shaft is parallel to the tangential direction of the circumference where the first mounting ring 136 is located, a supporting arm 139 for connecting the first mounting ring 136 and the driving arm 138 is arranged between one end face of the second mounting ring 137 close to the first mounting ring 136 and the middle position of the driving arm 138 along the length direction of the first mounting ring, one end of the supporting arm 139 is hinged with the driving arm 138, the axial direction of a hinge shaft formed at the hinged joint of the supporting arm 139 and the driving arm 138 is parallel to the tangential direction of the circumference where the second mounting ring 137 is located, the other end of the supporting arm 139 is hinged with the second mounting ring 137 close to the outer diameter edge of the second mounting ring, and the axial direction of a hinge shaft formed at the hinged joint of the supporting arm 139 and the second mounting ring 137 is parallel to the tangential direction of the circumference where the second mounting ring 137 is located, the telescopic disc 125 is driven by the extruding pipe 128 to move forwards, the telescopic, the driving arm 138 drives the tool shank 135 to move close to the center of the telescopic disk 125, and the tool edge 134 performs granulation processing on the plastic extruded from the extrusion hole 129.

In the working process that the extruding mechanism 120 and the cutting mechanism 130 are matched with each other, the power device 200 drives the extruding pipe 128 to do reciprocating motion of forward motion and retraction motion along the advancing direction of plastic extrusion, in the process of forward motion, the extruding pipe 128 drives the telescopic disc 125 to synchronously move, the telescopic disc 125 drives the cutter 133 to synchronously move, meanwhile, the extruding speed of the extruding pipe 128 is equal to the extrusion speed of the plastic extruded by pressure in the extruding pipe, the plastic strips extruded by the extruding holes 129 keep a fixed length, in the process, the supporting arm 139 pulls the driving arm 138 to rotate close to the telescopic disc 125, the driving arm 138 pushes the cutter handle 135 to move close to the central position of the telescopic disc 125, and the cutter edge 134 performs grain cutting processing on the plastic extruded by the extruding holes 129; in the process of retraction movement, the extrusion pipe 128 drives the telescopic disc 125 to synchronously move in the opposite direction, and meanwhile, the extrusion pipe 128 and the plastic extruded by the pressure inside the extrusion pipe are equal in speed and opposite in direction, so that the plastic strips are extruded outwards at twice extrusion speed from the extrusion holes 129, and the extruded length is equal to the length of the plastic particles, and the process is repeated in this way, and the grain cutting treatment of the extruded plastic strips is realized.

In order to drive the extrusion pipe 128 to reciprocate along the extrusion direction of the plastic, the power device 200 includes a linkage mechanism 210 fixedly connected to the extrusion pipe 128, and a driving mechanism 220 for driving the linkage mechanism 210 to reciprocate along the extrusion direction of the plastic, the linkage mechanism 210 is located in the mounting cylinder 110 and between the docking tray 111 and the fixing ring 112, the driving mechanism 220 is fixedly mounted on the outer circumferential surface of the mounting cylinder 110, and the output end of the driving mechanism extends to the mounting cylinder 110.

Specifically, the linkage mechanism 210 includes a linkage disk 211 coaxially and movably disposed in the mounting cylinder 110, an external step two 128a is disposed on an outer circumferential surface of the extruding pipe 128, the external step two 128a is located between the docking disk 111 and the fixing ring 112, and a diameter of the external step two 128a is smaller than that of the extruding pipe 128, the linkage disk 211 is sleeved on the external step two 128a, in order to press the linkage disk 211 on the external step two 128a, a pressing disk 212 movably sleeved on the extruding pipe 128 is coaxially disposed on an end surface of the linkage disk 211 close to the docking disk 111, a bolt 213 forming a threaded connection fit with the extruding pipe 128 is further sleeved on the extruding pipe 128, the bolt 213 is tightened to press the linkage disk 211 on the step two 128a through the pressing disk 212, and the extrusion pipe 128 performs a forward extending motion by driving the linkage disk 211 to move along a plastic extruding direction.

More specifically, in order to facilitate the extrusion pipe 128 to perform reverse retraction movement away from the plastic extrusion direction, the linkage mechanism 210 further includes a return spring 215 movably sleeved outside the extrusion pipe 128, one end of the return spring 215 abuts against the fixed disc 121, the other end of the return spring abuts against the linkage disc 211, and the elastic force of the return spring 215 always points to the linkage disc 211 from the fixed disc 121, so that the linkage disc 211 performs reverse retraction movement away from the plastic extrusion direction through the return spring 215, and the linkage disc 211 drives the extrusion pipe 128 to perform synchronous reverse retraction.

In order to drive the linkage disk 211 to perform forward extension movement along the extrusion direction of the plastic, the driving mechanism 220 includes a pushing ring 221 coaxially sleeved on the outer portion of one end of the linkage disk 211 close to the docking disk 111, a sliding guide fit is formed between an inner circular surface of the pushing ring 221 and an outer circular surface of the linkage disk 211 along the axial direction of the mounting cylinder 110, an end surface of the pushing ring 221 close to the fixing ring 112 is fixedly provided with a sharp tip 222 protruding towards the fixing ring 112, the protruding length of the tip 222 is equal to the reciprocating stroke of the extrusion tube 128, the tip 222 is provided with a plurality of tips and is arranged in an array along the circumferential direction of the pushing ring 221, the outer circular surface of the linkage disk 211 is provided with convex columns 214 protruding outwards and the axial direction of the convex columns 214 is arranged along the radial direction of the linkage disk 211, the convex columns 214 are provided with a plurality of tips and are arranged in an array along the circumferential direction of the linkage disk 211, the convex columns 214 and the tips 222 and are arranged in, by driving the pushing ring 221 to rotate around its own axial direction, the tip 222 extrudes the boss 214, and the linking disc 211 performs a forward movement along the extrusion direction of the plastic.

Specifically, in order to facilitate the installation of the abutting ring 221, an annular clamping groove 223 is coaxially formed in the outer circumferential surface of the abutting ring 221, the outer circumferential surface of the boss 113 is coaxially and fixedly provided with an annular limiting step 114, the diameter of the limiting step 114 is smaller than that of the boss 113, the abutting ring 221 is attached to the limiting step 114, clamping rings 224 used for sleeving and limiting the abutting ring and the limiting step are arranged outside the abutting ring 221 and the limiting step 114, each clamping ring 224 is composed of two detachable half-ring bodies, one end of each clamping ring 224 is buckled on the inner side surface of the limiting step 114, the other end of each clamping ring 224 is buckled in the clamping groove 223, and the clamping rings 224 enable the abutting ring 221 and the limiting step 114 to form a rotating.

More specifically, in order to be able to drive the pushing ring 221 to rotate, the outer circular surface of the pushing ring 221 is coaxially fixed with a sleeve provided with an annular driven gear ring 227 and the driven gear ring 227 is a bevel gear ring, the driving mechanism 220 further includes a motor 225 coaxially and fixedly installed on the outer circular surface of the installation cylinder 110, an output shaft of the motor 225 is axially arranged along the radial direction of the installation cylinder 110, an output shaft of the motor 225 extends to the installation cylinder 110 and the extending end is coaxially fixed with a fixed sleeve provided with a driving gear 226, the driving gear 226 is a bevel gear, the driving gear 226 is engaged with the driven gear ring 227, and the pushing ring 221 is driven to rotate by the motor 225.

In the process that the linkage mechanism 210 and the driving mechanism 220 are matched with each other, the motor 225 is started, the driving gear 226 and the driven gear ring 227 are matched with each other to transmit the power of the output shaft of the motor 225 to the pushing ring 221 and drive the pushing ring 221 to rotate around the axial direction of the motor, the tip 221 intermittently extrudes the convex column 214 and forces the convex column 214 to move along the extrusion direction of the plastic, the linkage disc 211 drives the extruding pipe 128 to synchronously move, so that the extruding pipe 128 synchronously and synchronously extends forwards along the extrusion direction of the plastic, then, when the tip 221 exceeds the convex column 214, the elastic force of the return spring 215 is released and pushes the linkage disc 211 to reversely move and return, the linkage disc 211 drives the extruding pipe 128 to reversely retract and return, and the reciprocating motion is performed in such a way, so that the extruding pipe 128 does reciprocating motion along the extrusion direction of the plastic.