CN115179463B

CN115179463B - Waste treatment device for processing polytetrafluoroethylene pipes

Info

Publication number: CN115179463B
Application number: CN202211112521.7A
Authority: CN
Inventors: 姚袁生; 仇桂芹; 柏立楼; 韦军; 刘红霞; 李建芳; 王加书; 张秀干
Original assignee: Jiangsu Yihao Plastic Industry Co ltd
Current assignee: Jiangsu Yihao Plastic Industry Co ltd
Priority date: 2022-09-14
Filing date: 2022-09-14
Publication date: 2023-01-03
Anticipated expiration: 2042-09-14
Also published as: CN115179463A

Abstract

The invention relates to the field of plastic product recovery, in particular to a waste treatment device for processing polytetrafluoroethylene pipes, which is used for treating the pipes and comprises a rack, a feeding mechanism and a cutting mechanism, wherein the cutting mechanism comprises a cutter holder, an adjusting assembly and a plurality of cutter assemblies; the cutting tool assemblies are all positioned in the ring grooves, the cutter assemblies are enabled to sequentially enter the tool retracting channel from the last cutting tool assembly forward by the adjusting assembly until the inner end of the cutter assembly in the ring groove can act on the pipe and cut the pipe along the axial direction of the pipe when the pipe passes through the through hole, the smaller the diameter of the pipe is, the more the cutter assemblies enter the tool retracting channel is, the fewer the cutter assemblies are left in the ring grooves, and the fewer the parts of the pipe are cut; the larger the diameter of the pipe, the more cutter assemblies are left in the ring groove, the more the pipe is cut, and therefore the width of the cut pipe is uniform as much as possible.

Description

Waste treatment device for processing polytetrafluoroethylene pipes

Technical Field

The invention relates to the field of plastic product recovery, in particular to a waste treatment device for processing polytetrafluoroethylene pipes.

Background

The polytetrafluoroethylene has stable performance and is known as the king of plastics, and the plastic pipes processed by the polytetrafluoroethylene are widely applied to various occasions; due to wide application range, the plastic waste generated in processing or use is continuously increased, and the plastic waste is recycled, so that the energy conservation and environmental protection are facilitated. In the prior art, polytetrafluoroethylene waste is usually ground into powder and reused as a raw material, for example, patent with publication number CN208359205U discloses a grinding mill for recycling polytetrafluoroethylene tubes, which grinds the powder by pushing a polytetrafluoroethylene tube body to contact a friction wheel through an electric push rod. Among the prior art, also have and smash the fritter with the direct extrusion of plastics tubular product to subsequent transportation with smash the processing, nevertheless the fritter deformation volume that the extrusion was smashed out is big and the specification differs, is unfavorable for depositing and subsequent crocus.

Disclosure of Invention

The inventor finds that the cutting is carried out along the axial direction of the polytetrafluoroethylene pipe, the cutting is carried out on the polytetrafluoroethylene pipe in the circumferential direction, so that the pipe is cut into a plurality of strips, the cutting parts of the pipe with the larger diameter are more than the cutting parts of the pipe with the smaller diameter are less than the cutting parts of the pipe with the smaller diameter according to the different diameters of the polytetrafluoroethylene pipe, the width of the pipe after the cutting is unified as much as possible, the subsequent cutting is facilitated, the size of the pipe with the uniform specification is more unified, and the storage and the subsequent grinding are facilitated.

The invention provides a waste treatment device for processing a polytetrafluoroethylene pipe, which aims to solve the problems that deformation of materials extruded and crushed during the conventional pipe waste treatment is large and the materials are different in specification.

The waste treatment device for processing the polytetrafluoroethylene pipe adopts the following technical scheme:

a waste treatment device for processing polytetrafluoroethylene pipes is used for processing the pipes and comprises a rack, a feeding mechanism and a cutting mechanism, wherein the feeding mechanism and the cutting mechanism are both arranged on the rack, and the cutting mechanism is positioned on the left side of the feeding mechanism; the cutting mechanism comprises a cutter holder, an adjusting assembly and a plurality of cutter assemblies, wherein the cutter holder is provided with a through hole, the axis of the through hole extends along the left-right direction, a ring groove communicated with the through hole is formed in the cutter holder, a cutter retracting channel which extends along the axial direction of the through hole and is communicated with the ring groove is further formed in the cutter holder, and the cutter retracting channel is positioned on the left side of the ring groove; the cutter assemblies are distributed along the circumferential direction of the through hole, the first cutter assembly is fixed with the cutter holder along the first direction, and except that the last cutter assembly is not connected with the first cutter assembly, other two adjacent cutter assemblies are connected in a sliding mode along the axial direction of the through hole; the cutter assembly extends along the radial direction of the through hole, one end facing the through hole is an inner end, and the other end is an outer end; the outer end of the cutter assembly is arranged in the annular groove, and the inner end of the cutter assembly extends to the through hole and is used for cutting the pipe; the cutter assemblies are of a telescopic structure, the inner ends of the cutter assemblies tend to be folded inwards, and when the number of the cutter assemblies positioned in the ring groove is reduced, the inner ends of the cutter assemblies in the ring groove except the first cutter assembly are allowed to move inwards, so that the diameter of a circle defined by the inner ends of the cutter assemblies in the ring groove is reduced; the axis of the pipe extends along the left-right direction, the right end of the pipe is arranged on the feeding mechanism, the feeding mechanism enables the pipe to penetrate through the through hole from right to left, and the pipe is cut by the inner end of the cutter assembly; in an initial state, the diameter of a circle defined by the inner ends of the cutter assemblies is larger than that of the pipe, and the cutter assemblies are enabled to enter the cutter retracting channel from the last cutter assembly forward in sequence by the adjusting assembly until the inner ends of the cutter assemblies can act on the pipe; after cutting, the cutter assemblies in the cutter retracting channel return to the annular grooves in sequence; wherein the first direction is counterclockwise as viewed from right to left.

Further, the cutter assembly comprises a sliding inner rod, a sleeve, a connecting plate and a cutter head, the inner end of the sliding inner rod is in radial sliding fit with the sleeve along the through hole and is connected with the sleeve through a pressure spring, and the pressure spring enables the sleeve to move inwards; the inner sliding rod of the first cutter assembly is fixedly connected with the ring groove along the first direction, the outer ends of the inner sliding rods of other cutter assemblies can slide in the ring groove along the circumferential direction of the through hole, and the inner sliding rods extend along the radial direction of the through hole all the time under the limitation of the ring groove; the connecting plate is fixed at the inner end of the sleeve, clamping columns and clamping rings are respectively arranged on two sides of the connecting plate along the circumferential direction of the through hole, and the clamping columns and the clamping rings axially extend along the through hole; along the first direction, the clamping columns and the clamping rings on the connecting plate of the first cutter assembly and the connecting plate of the last cutter assembly are not communicated, the clamping columns of the connecting plates of other cutter assemblies are in sliding fit with the clamping rings of the adjacent connecting plates, and the clamping rings of the other connecting plates are in sliding fit with the clamping columns of the adjacent connecting plates on the other side; the cutter head is arranged on the inner side of the connecting plate; the connecting plate and the sleeve have a tendency of moving inwards under the action of the pressure spring, and when the connecting plate moves inwards, the connecting plates of the cutter assemblies are connected in the circumferential direction of the through hole, so that other cutter assemblies except the first cutter assembly in the ring groove have a tendency of rotating along the first direction.

Furthermore, the adjusting assembly comprises a first spring and a top block, the first spring axially extends along the through hole and is positioned in the knife retracting channel, and the left end of the first spring is connected with the side wall of the knife retracting channel; the top block is arranged at the joint of the cutter retracting channel and the annular groove, the top block is positioned on the right side of the cutter assembly, a second spring is arranged between the right side of the top block and the cutter holder, the second spring promotes the top block to move leftwards or has a tendency of moving leftwards, and the stiffness coefficient of the first spring is greater than that of the second spring; the left side of the ejector block is an inclined plane, and when the cutter assembly moves to the cutter retracting channel along the first direction, the ejector block is pushed along the inclined plane of the ejector block to move rightwards to extrude a second spring; in an initial state, the last cutter assembly along the first direction is positioned in the cutter retracting channel and is pushed by the first spring to extrude the second spring through the jacking block; a first handle is arranged at the outer end of the last cutter assembly, and the first handle is pushed to extrude the first spring so that the last cutter assembly enters the cutter retracting channel; the former cutter assembly continues to rotate along the first direction and extrudes the ejector block along the inclined surface of the ejector block, and when the former cutter assembly moves to the cutter retracting channel, the former cutter assembly enters the cutter retracting channel under the pushing of the second spring; the inner end of the cutter assembly can act on the pipe, the first handle is loosened, the cutter assembly positioned in the cutter retracting channel is enabled to extrude the jacking block rightwards, and the cutter assembly positioned in the annular groove is prevented from continuously entering the cutter retracting channel.

Furthermore, the connecting plate is an arc-shaped plate with an inward circle center, the clamping ring is positioned on the front side of the connecting plate along the first direction, and the clamping column is positioned on the rear side of the connecting plate; a supporting plate is further arranged on one side, provided with the clamping ring, of the connecting plate, the supporting plate is located on the left side of the clamping ring, a stop ring is further arranged on one side, provided with the clamping column, of the connecting plate, and the stop ring is located on the left side of the clamping column; when the clamping column is matched with the clamping ring on the adjacent connecting plate, the stop ring is positioned on the outer side of the supporting plate on the adjacent connecting plate; a clamping groove which is coaxial with the annular groove and communicated with the inner ring of the stop ring is formed in the left side of the connecting plate; the clamping column of the next cutter assembly is separated from the clamping ring of the previous cutter assembly leftwards and then enters the clamping groove of the previous cutter assembly along the supporting plate, and when the previous cutter assembly slides along the annular groove to be close to the cutter retracting channel, the clamping column of the next cutter assembly slides along the clamping groove, and when the previous cutter assembly enters the cutter retracting channel, the clamping column of the next cutter assembly is matched with the stop ring of the previous cutter assembly; the distance between the connecting plate of the cutter assembly entering the cutter retracting channel and the axis of the through hole is always equal to the distance between the connecting plate of the cutter assembly located in the ring groove and the axis of the through hole; when the circular diameter limited by the inner ends of the cutter assemblies needs to be increased, one cutter assembly in the ring groove is pushed to rotate along a second direction opposite to the first direction, the clamping column of the rightmost cutter assembly in the cutter retracting channel moves rightwards under the action of the first spring to be matched with the clamping ring of the front-side adjacent cutter assembly after sliding to the supporting plate along the clamping groove of the front-side adjacent cutter assembly, and then the clamping column rotates along the second direction along with the front-side adjacent cutter assembly.

Furthermore, a material blocking rod is arranged at the inner end of a tool bit of the first tool assembly fixed with the annular groove and extends along the radial direction of the through hole; the pipe moves leftwards to be abutted against the material blocking rod and then stops; the cutter assemblies are folded to the size capable of acting on the pipe, the feeding mechanism continues to push the pipe to move leftwards, the cutter head axially cuts the side wall of the pipe along the through hole, and the material blocking rod is located in the pipe in the process that the pipe passes through the through hole.

Furthermore, an arc-shaped groove communicated with the annular groove is formed in the right side of the cutter holder, the arc-shaped groove is coaxial with the through hole, and the head end and the tail end are respectively arranged at the two ends of the arc-shaped groove; the tail end of the arc-shaped groove is collinear with the cutter retracting channel, and the head end of the arc-shaped groove is positioned on the front side of the tail end along the first direction; the cutting mechanism further comprises a second handle, in an initial state, the circular diameter defined by the inner ends of the cutter assemblies is in a maximum state, and the second handle penetrates through the arc-shaped groove and is fixedly connected with a sliding inner rod of one cutter assembly; by pushing the first handle leftwards, the cutter assemblies are allowed to rotate along the first direction and enter the cutter retracting channel in sequence, so that the diameter of the circle defined by the inner ends of the cutter assemblies is reduced; the second handle slides to the tail end of the arc-shaped groove, and the circular diameter defined by the inner ends of the cutter assemblies is in a minimum state; the cutter assemblies in the cutter retracting channel sequentially return to the annular grooves by pushing the second handle to rotate along the second direction, and then the circular diameter defined by the inner ends of the cutter assemblies is increased.

The invention has the beneficial effects that: the waste treatment device for processing the polytetrafluoroethylene pipe cuts the pipe in the axial direction through the cutter assemblies which are arranged on the cutter holder and distributed along the circumferential direction of the through hole of the cutter holder, and divides the pipe into a plurality of pipes in the circumferential direction; in an initial state, the diameter of a circle defined by the inner ends of the cutter assemblies is larger than that of the pipe so as to adapt to pipes of different sizes; the adjusting assembly enables the cutter assemblies in the ring groove to sequentially enter the cutter retracting channel from the last cutter assembly forward, and then the circle defined by the inner ends of the cutter assemblies in the ring groove is retracted until the inner ends of the cutter assemblies can act on the pipe, the smaller the diameter of the pipe is, the more the cutter assemblies enter the cutter retracting channel are, the fewer the cutter assemblies are left in the ring groove, and the fewer the number of parts of the pipe is cut; the larger the diameter of the pipe is, the smaller the number of the cutter assemblies entering the cutter retracting channel is, the larger the number of the cutter assemblies remaining in the ring groove is, the more the number of the cut parts of the pipe is, and therefore the width of the cut pipe is unified as much as possible on the whole; and after the cutting is finished, the cutter components in the cutter retracting channel are sequentially returned to the annular grooves.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic view showing an operating state of an embodiment of a waste treatment apparatus for polytetrafluoroethylene tube processing according to the present invention;

FIG. 2 is a schematic view of the overall structure of an embodiment of a waste treatment device for processing polytetrafluoroethylene pipes according to the invention;

FIG. 3 is a schematic view of a cutting mechanism in an embodiment of the waste treatment apparatus for polytetrafluoroethylene tube processing according to the present invention;

FIG. 4 is a schematic sectional view of a cutting mechanism in an embodiment of the waste treatment device for processing polytetrafluoroethylene tubes according to the invention;

FIG. 5 is a schematic view showing the initial state of a cutter assembly and an adjusting assembly in an embodiment of the waste treatment apparatus for polytetrafluoroethylene tube processing according to the present invention;

FIG. 6 is a schematic view showing the inner end of a cutter unit of an embodiment of the waste treatment apparatus for polytetrafluoroethylene tube processing according to the present invention being closed to a minimum state;

FIG. 7 is a schematic view of a cutter assembly in an embodiment of the waste treatment apparatus for polytetrafluoroethylene tube processing according to the present invention;

FIG. 8 is a schematic view showing a state where a part of the cutter assembly of the cutting mechanism enters the knife retracting passage in the embodiment of the waste treatment apparatus for polytetrafluoroethylene tube processing according to the present invention;

in the figure: 100. a frame; 110. a sliding track; 200. a feed mechanism; 210. a slide plate; 220. a hydraulic cylinder; 230. a conical sleeve; 300. a pipe; 400. a cutting mechanism; 410. a tool apron; 411. a through hole; 412. a retracting channel; 413. a ring groove; 414. an arc-shaped slot; 415. an annular track; 420. an adjustment assembly; 421. a first spring; 422. a top block; 430. a cutter assembly; 431. sliding the inner rod; 432. a sleeve; 433. a connecting plate; 434. a cutter head; 435. clamping the column; 436. a snap ring; 437. a support plate; 438. a stop ring; 439. a card slot; 440. a first handle; 450. a material blocking rod; 460. a second handle.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.

The embodiment of the waste treatment device for processing the polytetrafluoroethylene tube is used for treating the tube 300, and comprises a frame 100, a feeding mechanism 200 and a cutting mechanism 400,

the feeding mechanism 200 and the cutting mechanism 400 are both arranged on the frame 100, and the cutting mechanism 400 is positioned at the left side of the feeding mechanism 200;

the cutting mechanism 400 comprises a cutter holder 410, an adjusting assembly 420 and a plurality of cutter assemblies 430, the cutter holder 410 is fixed on the rack 100, the cutter holder 410 is provided with a through hole 411, the axis of the through hole 411 extends in the left-right direction, the cutter holder 410 is internally provided with a ring groove 413 which is communicated with the through hole 411 and is coaxial with the ring groove 413, the ring groove 413 is internally provided with a ring-shaped track 415 which is coaxial with the ring groove 413, the cutter holder 410 is further provided with a cutter receiving channel 412 which extends along the axial direction of the through hole 411 and is communicated with the ring groove 413, the cutter receiving channel 412 is positioned on the left side of the ring groove 413, the cutter receiving channel 412 is internally provided with a guide track (not shown in the figure) which extends along the axial direction of the through hole 411, the distance between the guide track and the axis of the through hole 411 is equal to the radius of the ring-shaped track 415, and the ring-shaped track 415 is disconnected at the cutter receiving channel 412 and is connected with the guide track; a plurality of cutter assemblies 430 are circumferentially distributed along the through hole 411, in a first direction, a first cutter assembly 430 is fixed with the cutter holder 410, and except that the last cutter assembly 430 is not connected with the first cutter assembly 430, other two adjacent cutter assemblies 430 are connected in a sliding manner along the axial direction of the through hole 411; the cutter assembly 430 extends along the radial direction of the through hole 411, and one end facing the axis of the through hole 411 is an inner end, and the other end is an outer end; the outer end of the cutter assembly 430 is mounted on an annular track 415 in the annular groove 413 or a guide track in the knife retracting channel 412, and the inner end of the cutter assembly 430 extends to the through hole 411 for cutting the tube 300; the cutter assemblies 430 are of a telescopic structure, the inner ends of the cutter assemblies 430 tend to be folded inwards, and when the number of the cutter assemblies 430 positioned in the ring groove 413 is reduced, the inner ends of the cutter assemblies 430 except for the first cutter assembly 430 in the ring groove 413 are allowed to move inwards, so that the diameter of the circle defined by the inner ends of the cutter assemblies 430 in the ring groove 413 is reduced;

the axis of the tube 300 extends along the left-right direction, and the right end is installed on the feeding mechanism 200, the feeding mechanism 200 enables the tube 300 to pass through the through hole 411 from right to left, and then the tube 300 is cut by the inner end of the cutter assembly 430;

in an initial state, the inner ends of the plurality of cutter assemblies 430 define a circular diameter larger than the diameter of the tubular product 300, and the adjusting assembly 420 enables the cutter assemblies 430 in the annular groove 413 to sequentially enter the retracting channel 412 from the last one forward, so that the circular shape defined by the inner ends of the cutter assemblies 430 in the annular groove 413 is retracted until the inner ends of the cutter assemblies can act on the tubular product 300; the smaller the diameter of the pipe 300 is, the more the cutter assemblies 430 enter the cutter retracting channel 412, the fewer the cutter assemblies 430 left in the ring groove 413 are, and the fewer the parts of the pipe 300 to be cut are; the larger the diameter of the pipe 300 is, the fewer the cutter assemblies 430 entering the cutter retracting channel 412 are, the larger the number of the cutter assemblies 430 left in the ring groove 413 is, the more the pipe 300 is cut, and therefore the width of the cut pipe 300 is made as uniform as possible on the whole; and after the cutting is completed, the cutter assembly 430 in the knife retracting channel 412 is sequentially returned to the ring groove 413. Wherein, the first direction mentioned in the whole text is the counterclockwise direction seen from the right to the left.

In the present embodiment, the cutter assembly 430 includes a sliding inner rod 431, a sleeve 432, a connecting plate 433 and a cutter head 434, an inner end of the sliding inner rod 431 is in radial sliding fit with the sleeve 432 along the through hole 411, and is connected with the sleeve 432 through a compression spring, and the compression spring urges the sleeve 432 to move inwards; in the first direction, the inner sliding rod 431 of the first cutter assembly 430 is fixedly connected with the annular track 415 in the annular groove 413, the outer end of the inner sliding rod 431 of the other cutter assembly 430 can slide on the annular track 415 in the annular groove 413, and the inner sliding rod 431 extends along the radial direction of the through hole 411 all the time under the limitation of the annular track 415. The connecting plate 433 is fixed at the inner end of the sleeve 432, clamping columns 435 and clamping rings 436 are respectively arranged on two sides of the connecting plate 433 along the circumferential direction of the through hole 411, and the clamping columns 435 and the clamping rings 436 axially extend along the through hole 411; along the first direction, the clamping columns 435 and the clamping rings 436 on the connecting plates 433 of the first cutter assembly 430 and the last cutter assembly 430 are not communicated with each other, the clamping columns 435 of the connecting plates 433 of other cutter assemblies 430 are in sliding fit with the clamping rings 436 of the adjacent connecting plates 433, and the clamping rings 436 of the other connecting plates 433 are in sliding fit with the clamping columns 435 of the adjacent connecting plates 433 on the other side; the sliding inner rod 431 and the sleeve 432 are both of square structures and are always in sleeve joint, so that the sleeve 432 is limited to rotate in the ring groove 413, and the connecting plate 433 is further limited to rotate around the clamping column 435;

the cutter head 434 is arranged on the inner side of the connecting plate 433; the connecting plate 433 and the sleeve 432 have a tendency to move inward by the action of the compression spring, and when the connecting plate 433 moves inward, since the connecting plates 433 of the plurality of cutter modules 430 are connected in the circumferential direction of the through-hole 411, the cutter modules 430 in the ring groove 413 and other than the first cutter module 430 have a tendency to rotate in the first direction.

In this embodiment, the adjusting assembly 420 includes a first spring 421 and a top block 422, the first spring 421 extends axially along the through hole 411 and is located in the knife retracting channel 412, and the left end of the first spring 421 is connected to the side wall of the knife retracting channel 412; the top block 422 is disposed at a joint of the knife retracting channel 412 and the ring groove 413, the top block 422 is located at the right side of the knife assembly 430, a second spring (not shown in the figure) is disposed between the right side of the top block 422 and the knife holder 410, the second spring urges the top block 422 to move leftward or to move leftward, and the stiffness coefficient of the first spring 421 is greater than that of the second spring; the left side of the top block 422 is an inclined plane, and when the cutter assembly 430 moves to the cutter retracting channel 412 along the first direction, the inclined plane of the top block 422 pushes the top block 422 to move rightwards to extrude the second spring;

in the initial state, the last cutter assembly 430 in the first direction is positioned at the right end of the cutter retracting channel 412 and is pushed by the first spring 421 to extrude the second spring through the top block 422; the outer end of the last cutter assembly 430 is provided with a first handle 440, and the last cutter assembly 430 enters the retracting channel 412 by pushing the first handle 440 to press the first spring 421; the previous cutter assembly 430 continues to rotate along the first direction and presses the top block 422 along the inclined surface of the top block 422, and when the previous cutter assembly 430 moves to the cutter retracting channel 412, the previous cutter assembly enters the cutter retracting channel 412 under the pushing action of the second spring; the inner end of the knife assembly 430 can act on the tube 300, and the first handle 440 is released, so that the knife assembly 430 in the knife retracting channel 412 is pushed to the right by the first spring 421 to press the top block 422, and the knife assembly 430 in the ring groove 413 is prevented from continuing to enter the knife retracting channel 412.

In this embodiment, the connecting plate 433 is an arc plate with an inward center, and along the first direction, the clamp ring 436 is located at the front side of the connecting plate 433, and the clamp column 435 is located at the rear side of the connecting plate 433; a support plate 437 is further arranged on one side, provided with the clamping ring 436, of the connecting plate 433, the support plate 437 is located on the left side of the clamping ring 436, and the outer side face of the support plate 437 is communicated with the inner ring of the clamping ring 436; a stop ring 438 is further arranged on one side, provided with the clamping column 435, of the connecting plate 433, the stop ring 438 is positioned on the left side of the clamping column 435, and the inner ring of the stop ring is coaxial with the clamping column 435; when the clamping columns 435 are matched with the clamping rings 436 on the adjacent connecting plates 433, the stop rings 438 are positioned on the outer sides of the supporting plates 437 on the adjacent connecting plates 433; a clamping groove 439 which is coaxial with the annular groove 413 and communicated with the inner ring of the stop ring 438 is arranged at the left side of the connecting plate 433, and the clamping groove 439 is communicated with the outer side of the supporting plate 437; the catch 435 of the following cutter assembly 430 is moved leftwardly away from the snap ring 436 of the preceding cutter assembly 430 by the rear edge support plate 437 into the catch 439 of the preceding cutter assembly 430, and when the preceding cutter assembly 430 slides along the ring groove 413 toward and adjacent to the retraction channel 412, the catch 435 of the following cutter assembly 430 slides along the catch 439, and when the preceding cutter assembly 430 enters the retraction channel 412, the catch 435 of the following cutter assembly 430 engages the stop ring 438 of the preceding cutter assembly 430; further, the distance between the connecting plate 433 of the cutter assembly 430 entering the cutter retracting channel 412 and the axis of the through hole 411 is always equal to the distance between the connecting plate 433 of the cutter assembly 430 located in the ring groove 413 and the axis of the through hole 411; when the cutter assembly 430 enters the tool retracting channel 412 from the annular groove 413, the sliding inner rod 431 of the cutter assembly 430 is switched from being matched with the annular track 415 to being matched with the guide track, so that the length of the cutter assembly 430 in the tool retracting channel 412 is equal to that of the cutter assembly 430 in the annular groove 413. When it is desired to increase the diameter of the circle defined by the inner ends of the plurality of cutter assemblies 430, one cutter assembly 430 positioned in the annular groove 413 is pushed to rotate in a second direction opposite to the first direction, and after the catch 435 of the rightmost cutter assembly 430 positioned in the retraction passage 412 slides to the outside of the support plate 437 along the catch groove 439 of the front adjacent cutter assembly 430, the catch 435 moves rightward under the action of the first spring 421 to engage with the catch ring 436 of the front adjacent cutter assembly 430, and then the front adjacent cutter assembly 430 rotates in the second direction. Wherein the second direction is clockwise as viewed from right to left.

In this embodiment, the inner end of the bit 434 of the first cutter assembly 430 fixed to the annular groove 413 is provided with a stopper rod 450, and the stopper rod 450 extends along the through hole 411 in the radial direction; the pipe 300 stops moving to the left until the pipe abuts against the stop rod 450; when the plurality of cutter assemblies 430 are folded to the size capable of acting on the pipe 300, the feeding mechanism 200 continues to push the pipe 300 to move leftward, the cutter head 434 axially cuts the side wall of the pipe 300 along the through hole 411, and the striker 450 is located in the pipe 300 during the process that the pipe 300 passes through the through hole 411.

In this embodiment, an arc-shaped groove 414 communicated with the ring groove 413 is disposed on the right side of the tool holder 410, the arc-shaped groove 414 is coaxial with the through hole 411, and two ends of the arc-shaped groove 414 are a head end and a tail end respectively; the tail end of the arc-shaped groove 414 is collinear with the retracting blade channel 412, and the head end of the arc-shaped groove 414 is positioned at the front side of the tail end along the first direction; the cutting mechanism 400 further comprises a second handle 460, wherein in the initial state, the circular diameter defined by the inner ends of the cutter assemblies 430 is at the maximum, and the second handle 460 passes through the arc-shaped slot 414 and is fixedly connected with the sliding inner rod 431 of one cutter assembly 430; by pushing first handle 440 to the left, cutter assemblies 430 are allowed to rotate in a first direction and sequentially enter retracting channel 412, causing the circular diameter defined by the inner ends of the plurality of cutter assemblies 430 to decrease; to the end of the arcuate slot 414 where the second handle 460 slides, the circular diameter defined by the inner ends of the plurality of cutter assemblies 430 is at a minimum; by pushing the second handle 460 to rotate in the second direction, the cutter assemblies 430 in the retracting channel 412 are sequentially returned to the annular groove 413, and the diameter of the circle defined by the inner ends of the cutter assemblies 430 is increased.

In this embodiment, the feeding mechanism 200 includes a sliding plate 210, a hydraulic cylinder 220 and a conical sleeve 230, a sliding rail 110 extending left and right is disposed on the frame 100, the sliding plate 210 is slidably mounted on the sliding rail 110 left and right, and the sliding plate 210 is located at the right side of the tool apron 410; the tapered sleeve 230 is fixed on the left side of the sliding plate 210 and is coaxial with the through hole 411, and the left end of the tapered sleeve 230 is smaller and the right end is larger, so that the pipes 300 with different diameters can be sleeved outside the tapered sleeve 230 from left to right; the hydraulic cylinder 220 is located at the right side of the sliding plate 210, and is mounted on the frame 100 for pushing the sliding plate 210 to move left so that the tube 300 passes through the through hole 411.

According to the waste treatment device for processing the polytetrafluoroethylene pipes, in an initial state, along a first direction, the last cutter assembly 430 is positioned at the right end of a cutter collecting channel 412 and is extruded to extrude a second spring through an ejector block 422 under the pushing action of a first spring 421, a first handle 440 is positioned at the right end of the cutter collecting channel 412, the first spring 421 prevents the last cutter assembly 430 from moving leftwards, and the first handle 440 limits the last cutter assembly 430 to continue to rotate along the first direction; because the clamping columns 435 and the clamping rings 436 of the connecting plates 433 of two adjacent cutter assemblies 430 are hinged, and the sliding inner rods 431 are sleeved with the sleeves 432 to limit the rotation of the sleeves 432 and the connecting plates 433, all the cutter assemblies 430 are kept static on the premise that the last cutter assembly 430 is limited to rotate, the cutter heads 434 of all the cutter assemblies 430 are limited to be inwardly folded, all the cutter assemblies 430 are located on the same circumference around the axis of the through hole 411, the circular diameter defined by the inner ends of all the cutter assemblies 430 is in the maximum state, and the second handle 460 is located at the head end of the arc-shaped groove 414.

When in use, the right end of the pipe 300 is sleeved on the conical sleeve 230, the pipe 300 is manually kept in a horizontal state, and the sliding plate 210 is pushed to slide leftwards until the left end of the pipe 300 is abutted against the material blocking rod 450; and then the first handle 440 is slowly pushed to move leftwards to enter the retracting channel 412 and press the first spring 421, the clamping column 435 of the last cutter assembly 430 is disengaged from the clamping ring 436 of the penultimate cutter assembly 430 leftwards and abuts against the supporting plate 437 on the left side of the clamping ring 436 until the clamping column 435 of the last cutter assembly 430 no longer hinders the rotation of the penultimate cutter assembly 430 in the first direction, the sleeve 432 and the connecting plate 433 of the cutter assembly 430 positioned in the ring groove 413 move inwards under the action of the internal compression spring thereof, and the other cutter assemblies 430 except the first cutter assembly 430 in the ring groove 413 are all rotated in the first direction, and when the penultimate cutter assembly 430 rotates in the first direction, the clamping column 435 of the last cutter assembly 430 slides along the connecting plate 439 of the penultimate cutter assembly 430, so that the connecting plate 433 of the last cutter assembly 430 and the connecting plate 433 of the penultimate cutter assembly 430 are positioned on the same straight line parallel to the axis of the through hole 411, and the influence of the cutting slot 434 of the cutter assembly 430 in the retracting channel 412 on the cutting of the pipe 300 is avoided. During the process that the penultimate cutter assembly 430 rotates to the right end of the tool retracting channel 412 along the first direction, the top block 422 is pushed along the inclined surface of the top block 422 to move rightwards to press a second spring, and the penultimate cutter assembly 430 moves to the right end of the tool retracting channel 412, the clamping column 435 of the last cutter assembly 430 moves to the stop ring 438 of the penultimate cutter assembly 430, meanwhile, the first handle 440 is continuously pushed slowly to move leftwards to press the first spring 421, and the penultimate cutter assembly 430 moves leftwards under the action of the second spring, so that the clamping column 435 of the penultimate cutter assembly 430 is disengaged from the clamping column 436 of the penultimate cutter assembly 430; when the third last cutter assembly 430 continues to rotate in the first direction to the retracting channel 412, the first handle 440 continues to be pushed slowly to the left, so that the third last cutter assembly 430 can enter the retracting channel 412 to the left under the pushing action of the second spring. The connecting plates 433 of the plurality of cutter assemblies 430 connected to the annular groove 413 are attached to the outer wall of the tube 300, and the cutter heads 434 of the plurality of cutter assemblies 430 on the annular groove 413 can act on the inner wall of the tube 300 to release the first handle 440, so that the cutter assemblies 430 in the cutter accommodating channel 412 can prevent the cutter assemblies 430 in the annular groove 413 from further rotating in the first direction under the pushing of the first spring 421. At this time, the locking pin 435 of the tool assembly 430 located at the rightmost end of the tool retracting passage 412 abuts against the locking groove 439 of the last tool assembly 430 located in the annular groove 413, or is located on the same circumference as the other tool assemblies 430 located in the annular groove 413.

The hydraulic cylinder 220 is actuated, the hydraulic cylinder 220 pushes the sliding plate 210 to move left, so that the tube 300 passes through the through hole 411, and the tube 300 is divided into a plurality of strips with arc-shaped cross sections by the tool bit 434 of the cutter assembly 430 in the annular groove 413 during the leftward movement.

After the pipe 300 is cut, the second handle 460 is pushed along the second direction, the second handle 460 drives one of the cutter assemblies 430 in the ring groove 413 to rotate along the second direction, and further the cutter assembly 430 behind the cutter assembly 430 is driven to rotate along the second direction through the cooperation of the clamping column 435 and the clamping ring 436; after the tool assembly 430 at the rightmost end of the retracting channel 412 rotates in the second direction until the latching pin 435 of the tool assembly 430 at the left side is disengaged from the latching slot 439, the tool assembly 430 at the left side moves rightwards into the annular groove 413 under the urging of the first spring 421. When the second handle 460 rotates the cutter assemblies 430 in the ring groove 413 in the second direction, the connecting plate 433 of the cutter assemblies 430 in the ring groove 413 moves away from the axial direction of the through hole 411 under the mutual pressing action, and the diameters of circles defined by the inner ends of the cutter assemblies 430 in the ring groove 413 are increased. By the time the second handle 460 is rotated to the beginning of the arcuate slot 414, the knife assembly 430 returns to the initial position for the next cut.

It should be noted that pushing first handle 440 to the left requires a slow push to prevent the engagement between the engagement post 435 of the tool assembly 430 in the retraction channel 412 and the engagement slot 439 or stop ring 438 of the right adjacent tool assembly 430.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. The utility model provides a waste material processing apparatus is used in processing of polytetrafluoroethylene tubular product for handle tubular product, its characterized in that: the cutting machine comprises a rack, a feeding mechanism and a cutting mechanism, wherein the feeding mechanism and the cutting mechanism are both arranged on the rack, and the cutting mechanism is positioned on the left side of the feeding mechanism; the cutting mechanism comprises a cutter holder, an adjusting assembly and a plurality of cutter assemblies, wherein the cutter holder is provided with a through hole, the axis of the through hole extends along the left-right direction, a ring groove communicated with the through hole is formed in the cutter holder, a cutter retracting channel which extends along the axial direction of the through hole and is communicated with the ring groove is further formed in the cutter holder, and the cutter retracting channel is positioned on the left side of the ring groove; the cutter assemblies are distributed along the circumferential direction of the through hole, the first cutter assembly is fixed with the cutter holder along the first direction, and except that the last cutter assembly is not connected with the first cutter assembly, other two adjacent cutter assemblies are connected in a sliding mode along the axial direction of the through hole; the cutter assembly extends along the radial direction of the through hole, one end facing the through hole is an inner end, and the other end is an outer end; the outer end of the cutter assembly is arranged on the annular groove, and the inner end of the cutter assembly extends to the through hole and is used for cutting the pipe; the cutter assemblies are of a telescopic structure, the inner ends of the cutter assemblies tend to be folded inwards, and when the number of the cutter assemblies positioned in the ring groove is reduced, the inner ends of the cutter assemblies in the ring groove except the first cutter assembly are allowed to move inwards, so that the diameter of a circle defined by the inner ends of the cutter assemblies in the ring groove is reduced; the axis of the pipe extends along the left-right direction, the right end of the pipe is arranged on the feeding mechanism, the feeding mechanism enables the pipe to penetrate through the through hole from right to left, and the pipe is cut by the inner end of the cutter assembly; in an initial state, the diameter of a circle defined by the inner ends of the cutter assemblies is larger than that of the pipe, and the cutter assemblies are enabled to enter the cutter retracting channel from the last cutter assembly forward in sequence by the adjusting assembly until the inner ends of the cutter assemblies can act on the pipe; after cutting, the cutter assemblies in the cutter retracting channel sequentially return to the annular grooves; wherein the first direction is counterclockwise when viewed from right to left;

the cutter assembly comprises a sliding inner rod, a sleeve, a connecting plate and a cutter head, wherein the inner end of the sliding inner rod is in radial sliding fit with the sleeve along the through hole and is connected with the sleeve through a pressure spring, and the sleeve is driven to move inwards by the pressure spring; the inner sliding rod of the first cutter assembly is fixedly connected with the ring groove along the first direction, the outer ends of the inner sliding rods of other cutter assemblies can slide in the ring groove along the circumferential direction of the through hole, and the inner sliding rods extend along the radial direction of the through hole all the time under the limitation of the ring groove; the connecting plate is fixed at the inner end of the sleeve, clamping columns and clamping rings are respectively arranged on two sides of the connecting plate along the circumferential direction of the through hole, and the clamping columns and the clamping rings axially extend along the through hole; along the first direction, the connecting plate of the first cutter assembly is not communicated with the clamping column and the clamping ring on the connecting plate of the last cutter assembly, the clamping columns of the connecting plates of other cutter assemblies are in sliding fit with the clamping rings of the adjacent connecting plates, and the clamping rings of the other connecting plates are in sliding fit with the clamping columns of the adjacent connecting plates on the other side; the cutter head is arranged on the inner side of the connecting plate; the connecting plate and the sleeve have a tendency of moving inwards under the action of the pressure spring, and when the connecting plate moves inwards, the connecting plates of the cutter assemblies are connected in the circumferential direction of the through hole, so that other cutter assemblies except the first cutter assembly in the ring groove have a tendency of rotating along the first direction.

2. The waste treatment device for polytetrafluoroethylene tube processing according to claim 1, wherein the waste treatment device comprises: the adjusting assembly comprises a first spring and a top block, the first spring extends axially along the through hole and is positioned in the cutter retracting channel, and the left end of the first spring is connected with the side wall of the cutter retracting channel; the top block is arranged at the joint of the cutter retracting channel and the annular groove, the top block is positioned on the right side of the cutter assembly, a second spring is arranged between the right side of the top block and the cutter holder, the second spring promotes the top block to move leftwards or has a tendency of moving leftwards, and the stiffness coefficient of the first spring is greater than that of the second spring; the left side of the ejector block is an inclined plane, and when the cutter assembly moves to the cutter retracting channel along the first direction, the ejector block is pushed along the inclined plane of the ejector block to move rightwards to extrude a second spring; in an initial state, the last cutter assembly along the first direction is positioned in the cutter retracting channel and is pushed by the first spring to extrude the second spring through the jacking block; a first handle is arranged at the outer end of the last cutter assembly, and the first handle is pushed to extrude the first spring so that the last cutter assembly enters the cutter retracting channel; the former cutter assembly continues to rotate along the first direction and extrudes the ejector block along the inclined surface of the ejector block, and when the former cutter assembly moves to the cutter retracting channel, the former cutter assembly enters the cutter retracting channel under the pushing of the second spring; the inner end of the cutter assembly can act on the pipe, the first handle is loosened, the cutter assembly positioned in the cutter retracting channel is enabled to extrude the jacking block rightwards, and the cutter assembly positioned in the annular groove is prevented from continuously entering the cutter retracting channel.

3. The waste treatment device for polytetrafluoroethylene tube machining according to claim 2, wherein the waste treatment device comprises: the connecting plate is an arc plate with an inward circle center, the clamping ring is positioned on the front side of the connecting plate along the first direction, and the clamping column is positioned on the rear side of the connecting plate; a supporting plate is further arranged on one side, provided with the clamping ring, of the connecting plate, the supporting plate is located on the left side of the clamping ring, a stop ring is further arranged on one side, provided with the clamping column, of the connecting plate, and the stop ring is located on the left side of the clamping column; when the clamping column is matched with the clamping ring on the adjacent connecting plate, the stop ring is positioned on the outer side of the supporting plate on the adjacent connecting plate; a clamping groove which is coaxial with the annular groove and communicated with the inner ring of the stop ring is formed in the left side of the connecting plate; the clamping column of the next cutter assembly is separated from the clamping ring of the previous cutter assembly leftwards and then enters the clamping groove of the previous cutter assembly along the supporting plate, and when the previous cutter assembly slides along the ring groove to a position close to the cutter retracting channel, the clamping column of the next cutter assembly slides along the clamping groove, and when the previous cutter assembly enters the cutter retracting channel, the clamping column of the next cutter assembly is matched with the stop ring of the previous cutter assembly; the distance between the connecting plate of the cutter assembly entering the cutter retracting channel and the axis of the through hole is always equal to the distance between the connecting plate of the cutter assembly located in the ring groove and the axis of the through hole; when the circular diameter limited by the inner ends of the cutter assemblies needs to be increased, one cutter assembly in the ring groove is pushed to rotate along a second direction opposite to the first direction, the clamping column of the rightmost cutter assembly in the cutter retracting channel moves rightwards under the action of the first spring to be matched with the clamping ring of the front-side adjacent cutter assembly after sliding to the supporting plate along the clamping groove of the front-side adjacent cutter assembly, and then the clamping column rotates along the second direction along with the front-side adjacent cutter assembly.

4. The waste treatment device for polytetrafluoroethylene tube machining according to claim 1, wherein the waste treatment device comprises: a material blocking rod is arranged at the inner end of the cutter head of the first cutter assembly fixed with the annular groove and extends along the radial direction of the through hole; the pipe moves leftwards to be abutted against the material blocking rod and then stops; the cutter assemblies are folded to the size capable of acting on the pipe, the feeding mechanism continues to push the pipe to move leftwards, the cutter head axially cuts the side wall of the pipe along the through hole, and the material blocking rod is located in the pipe in the process that the pipe passes through the through hole.

5. The waste treatment device for polytetrafluoroethylene tube machining according to claim 1, wherein the waste treatment device comprises: the right side of the cutter holder is provided with an arc-shaped groove communicated with the annular groove, the arc-shaped groove is coaxial with the through hole, and the two ends of the arc-shaped groove are respectively a head end and a tail end; the tail end of the arc-shaped groove is collinear with the cutter retracting channel, and the head end of the arc-shaped groove is positioned on the front side of the tail end along the first direction; the cutting mechanism further comprises a second handle, in an initial state, the circular diameter defined by the inner ends of the cutter assemblies is in a maximum state, and the second handle penetrates through the arc-shaped groove and is fixedly connected with a sliding inner rod of one cutter assembly; by pushing the first handle leftwards, the cutter assemblies are allowed to rotate along the first direction and enter the cutter retracting channel in sequence, so that the diameter of the circle defined by the inner ends of the cutter assemblies is reduced; sliding the second handle to the end of the arc-shaped groove, wherein the circular diameter defined by the inner ends of the plurality of cutter assemblies is in a minimum state; the cutter assemblies in the cutter retracting channel sequentially return to the annular grooves by pushing the second handle to rotate along the second direction, and then the circular diameter defined by the inner ends of the cutter assemblies is increased.