CN112549476B - Portable cutting device based on plastics extruding machine - Google Patents

Portable cutting device based on plastics extruding machine Download PDF

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Publication number
CN112549476B
CN112549476B CN202011366646.3A CN202011366646A CN112549476B CN 112549476 B CN112549476 B CN 112549476B CN 202011366646 A CN202011366646 A CN 202011366646A CN 112549476 B CN112549476 B CN 112549476B
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section
rod
melting section
melting
wall
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CN202011366646.3A
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CN112549476A (en
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范犁生
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Zhangzhou Puruibang Energy Saving Technology Co ltd
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Zhangzhou Puruibang Energy Saving Technology Co ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B29C48/0022—Combinations of extrusion moulding with other shaping operations combined with cutting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
    • B26D1/04—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member
    • B26D1/06—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member wherein the cutting member reciprocates
    • B26D1/08—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member wherein the cutting member reciprocates of the guillotine type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D5/08—Means for actuating the cutting member to effect the cut
    • B26D5/086—Electric, magnetic, piezoelectric, electro-magnetic means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/08—Means for treating work or cutting member to facilitate cutting
    • B26D7/088—Means for treating work or cutting member to facilitate cutting by cleaning or lubricating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/252—Drive or actuation means; Transmission means; Screw supporting means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/254—Sealing means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50—Details of extruders
    • B29C48/505—Screws
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C69/00—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore
    • B29C69/001—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore a shaping technique combined with cutting, e.g. in parts or slices combined with rearranging and joining the cut parts

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

The invention discloses a convenient cutting device based on a plastic extruding machine, which comprises an extruding machine frame, wherein a connecting base is arranged at the bottom of one side of the extruding machine frame, a telescopic assembly is arranged at the top end of the connecting base, a fixing assembly is arranged in the middle of a supporting rod, the telescopic assembly comprises a supporting rod, a limiting block, a first electric telescopic rod, a supporting plate, an upper clamping plate, a lower clamping plate and a discharging chute, the supporting rod is arranged at the corner position of the top end of the connecting base, and the limiting block is arranged at the top end of the supporting rod.

Description

Portable cutting device based on plastics extruding machine
Technical Field
The invention relates to the technical field of plastic extruding machines, in particular to a convenient cutting device based on a plastic extruding machine.
Background
The plastic extruding machine is an important plastic machine, the production and manufacture of most plastic products can be realized by extrusion molding, and a motor of the plastic extruding machine is an important component of the plastic extruding machine and is a prime motor of the plastic extruding machine and provides large thrust required by a screw of the plastic extruding machine;
however, after the plastic extruding machine is extruded at present, the cutter is usually manually held by hands or the extruding opening is cut off by the cutter, the manual cutting is low in cutting efficiency and consumes more manpower, the extruding opening cannot be used by different extruding machines due to the cutter, and the application range is small.
Disclosure of Invention
The invention provides a convenient cutting device based on a plastic extruding machine, which can effectively solve the problems that after the plastic extruding machine is extruded at present, a cutter is usually manually held by a hand or an extrusion port is provided with the cutter to cut, the manual cutting has low cutting efficiency and consumes more manpower, the extrusion port is provided with the cutter which cannot meet the use requirements of different extruding machines, and the application range is small.
In order to achieve the purpose, the invention provides the following technical scheme: a portable cutting device based on a plastic extruding machine comprises an extruding machine frame, wherein a connecting base is installed at the bottom of one side of the extruding machine frame, and a telescopic assembly is installed at the top end of the connecting base;
the telescopic assembly comprises a supporting rod, a limiting block, a first electric telescopic rod, a supporting plate, an upper clamping and connecting plate, a lower clamping and connecting plate and a discharging chute;
the utility model discloses a cutting assembly, including base, bracing piece, stopper, support plate side end face welding, connect the top of base and install the bracing piece, the mid-mounting of the top corner position department of connecting the base has fixed subassembly, the stopper is installed on the top of bracing piece, the top mid-mounting of connecting the base has first electric telescopic handle, first electric telescopic handle's input and external power source's output electric connection, the middle part joint of bracing piece has the backup pad, the welding of backup pad side end face has cutting assembly, the joint board is installed to backup pad top corner position department, backup pad bottom corner position department installs down the joint board, the unloading chute has been seted up on the backup pad top.
Preferably, the upper clamping plate and the lower clamping plate are the same in structure, and the upper clamping plate and the lower clamping plate are clamped with the supporting rod.
Preferably, the fixing component comprises a connecting rod, a threaded hole, a threaded rod and a limiting round block;
connecting rods are symmetrically arranged in the middle of the supporting rod, threaded holes are formed in the end portions of the connecting rods in a penetrating mode, threaded rods are connected to the inner portions of the threaded holes in a meshed mode through threads, and limiting round blocks are symmetrically welded to the two ends of each threaded rod;
the connecting rod is L type structure, spacing round block radius size is 1.5 times threaded rod radius size.
Preferably, the cutting assembly comprises an installation base, a second electric telescopic rod, an installation rod, a strip-shaped installation groove, a cutting blade, a baffle plate, a sliding groove, a sliding frame, a limiting hole, a limiting rod and a stop rod;
the utility model discloses a cutting tool, including backup pad, electric telescopic handle, installation base, mounting base, the input of second electric telescopic handle and external power source's output electric connection, the installation pole is installed through the bolt to the second electric telescopic rod tip, the bar mounting groove has been seted up at the mounting pole middle part, bar mounting groove middle part joint has the cutting blade, the backup pad top corresponds the symmetrical welding of cutting blade both sides position department and has the baffle, the spout has been seted up to baffle outside terminal surface, the spout, inside slidable mounting has the sliding frame, the sliding frame top is run through and has been seted up spacing hole, spacing downthehole portion rotates and installs the gag lever post, the shelves pole is installed on the gag lever post top.
Preferably, the distance between the top end of the sliding groove and the baffle is 1cm, sliding blocks are symmetrically arranged on the inner side of the sliding frame, and the sliding blocks are slidably arranged inside the sliding groove.
Preferably, the outer end face of the bottom of the limiting rod is provided with a limiting stop ring, and the limiting stop ring is attached to the bottom end of the sliding frame.
Preferably, the extruder comprises a segmented screw; the sectional screw comprises a feeding section, a melting section and a homogenizing section; and different-speed linkage rotation is realized between the feeding section and the melting section and between the melting section and the homogenizing section through a linkage mechanism respectively.
Wherein, the center of one end of the feeding section and the homogenizing section respectively extends outwards to form a convex shaft; the melting section is of a tubular structure; the two convex shafts are inserted and butted from two ends of the melting section respectively; the outer diameter of the convex shaft is smaller than the inner diameter of the melting section and can rotate relative to the melting section; the inner wall of the melting section and the outer walls of the two convex shafts respectively enclose a sealed cavity; electrorheological fluid is filled in the sealed cavity; the melting section is positioned on the inner wall of the sealed cavity and is provided with protruding outer toothed plates at intervals; the feeding section and the homogenizing section are positioned on the outer wall of the sealed cavity and are provided with inner toothed plates at intervals corresponding to the outer toothed plates; a gap is formed between the outer toothed plate and the inner toothed plate, so that the outer toothed plate and the inner toothed plate cannot interfere with each other; the electrorheological fluids in the two sealed cavities are applied with electric fields by an independent circuit respectively; the outer toothed plate and the inner toothed plate are respectively used as positive and negative electrodes to apply an electric field to the electrorheological fluid.
The outer side of the convex shaft is provided with two stop blocks at intervals, and a first piston ring is embedded in the outer circumferential surface of each stop block; the first piston ring seals against the inner wall of the melting section to realize sealed rotation; the stop block, the outer wall of the convex shaft and the inner wall of the melting section enclose to form the sealed cavity; the convex shafts outside the two stop blocks are respectively sleeved with a bearing; the bearing outer ring abuts against the inner wall of the melting section.
Wherein, a seal sleeve is respectively hooped at the boundary of the outer walls of the feeding section and the melting section and the boundary of the outer walls of the melting section and the homogenizing section; a plurality of outer annular grooves are formed in the inner wall of the seal sleeve; inner annular grooves are also formed in the outer walls of the feeding section, the melting section and the homogenizing section corresponding to the outer annular grooves, a plurality of second piston rings are embedded in the outer annular grooves and the inner annular grooves respectively, the corresponding outer annular grooves and the corresponding inner annular grooves are embedded by one second piston ring, so that the feeding section, the melting section and the homogenizing section can rotate relative to the sealing sleeve, and the axial displacement is limited by the sealing sleeve; the outer circumferential surface of the sealing sleeve is a cambered surface on an axial tangent plane so as to avoid blocking the advance of materials.
Compared with the prior art, the invention has the beneficial effects that: the invention has scientific and reasonable structure and safe and convenient use:
1. through setting up bracing piece, stopper, electric telescopic handle, backup pad, last joint board, lower joint board and unloading chute, electric telescopic handle's promotion and fixed subassembly's are fixed, make things convenient for cutting device's fixed, make it be connected with the extruding machine of co-altitude not, and cutting device application scope is wider, and the availability factor improves, need not manual operation, uses manpower sparingly.
2. Through setting up baffle, sliding frame, gag lever post and shelves pole, the baffle will cut off the remaining plastics residue of blade and clear up, and the sliding frame removes along the spout is downstream, and the sliding frame strikes off the plastics impurity on baffle surface, conveniently clears up the plastics impurity that cuts off blade and baffle surface, makes to cut off the blade and keep sharp, cuts off more smoothly.
3. Through setting up connecting rod, screw hole, threaded rod and spacing circle piece, cutting device places at extruding machine frame side end face, and connecting rod and the laminating of extrusion molding frame are twisted the threaded rod and are made spacing circle piece support tightly with the extrusion molding frame, make things convenient for cutting device's spacing fixed.
4. The linkage mechanism is specially arranged aiming at the extrusion molding characteristics of an extruding machine and the structural characteristics of a sectional type screw, utilizes the characteristics of electrorheological fluid, has extremely strong plasticity and variability, can simply and conveniently realize reversible instantaneous control through the strength of an external electric field, and therefore, the rotating speed of each section of the screw is adjusted according to different materials, formulas and processes, and the linkage mechanism is suitable for the melting and homogenizing characteristics of different materials, formulas and processes; and the contradiction that the melting section and the homogenizing section are plasticized and homogenized incompletely when the rotating speed is too high, feeding is supplemented insufficiently when the rotating speed of the feeding section is too low, flow cutoff is generated, and air is easy to enter can be solved.
5. The application utilizes the phase change under the action of the electric field of the electrorheological fluid, thereby realizing the wide change of the anti-shearing capability, realizing the linkage change of the large-amplitude continuity of each segment, being very flexible, greatly improving the application range of the plastic extruding machine using the technology, being very suitable for extrusion molding production enterprises with small scale, and effectively reducing the cost of the equipment.
6. The inside and outside leakproofness of each segmentation relative rotation in-process is ensured through first piston ring, second piston ring and seal cover.
7. The outer toothed plate and the two side surfaces of the inner toothed plate are firstly attached with insulating sheets, and then the insulating sheets are attached with conductive electrode plates, so that the current can be prevented from being conducted to the outside through the screw rod, and danger and waste of electric energy are avoided; utilize simultaneously outer pinion rack and interior pinion rack and the direct and even contact's of electrorheological fluids characteristics, with its electrode as applying the electric field to the electrorheological fluids and utilize the electrorheological fluids to apply shearing force transmission pivoted application of force component, make full use of the structure and the distribution characteristics of outer pinion rack and interior pinion rack.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention.
In the drawings:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the telescoping assembly of the present invention;
FIG. 3 is a schematic view of the cutting assembly of the present invention;
FIG. 4 is an enlarged view of area A of FIG. 3 according to the present invention;
FIG. 5 is a schematic structural view of a segmented screw of the present invention;
FIG. 6 is a partial schematic view of a segmented screw of the present invention after removal of the electrorheological fluid.
Reference numbers in the figures: 1. an extrusion molding machine frame; 2. a connecting base;
3. a telescoping assembly; 301. a support bar; 302. a limiting block; 303. a first electric telescopic rod; 304. a support plate; 305. an upper clamping connection plate; 306. a lower clamping and connecting plate; 307. a blanking chute;
4. a cutting assembly; 401. installing a base; 402. a second electric telescopic rod; 403. mounting a rod; 404. a strip-shaped mounting groove; 405. cutting off the blade; 406. a baffle plate; 407. a chute; 408. a sliding frame; 409. a limiting hole; 410. a limiting rod; 411. a gear lever;
5. a fixing assembly; 501. a connecting rod; 502. a threaded hole; 503. a threaded rod; 504. a limiting round block;
6. a segmented screw; 61. a feeding section; 62. a melting section; 63. a homogenization section; 64. a protruding shaft; 641. a stopper; 642. a first piston ring; 643. a bearing; 65. sealing the cavity; 66. electrorheological fluid; 67. an outer toothed plate; 68. an inner toothed plate; 69. sealing sleeves; 693. a second piston ring.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
The embodiment is as follows: as shown in fig. 1-4, the invention provides a technical scheme, and provides a portable cutting device based on a plastic extruding machine, which comprises an extruding machine frame 1, wherein the bottom of one side of the extruding machine frame 1 is provided with a connecting base 2, the top end of the connecting base 2 is provided with a telescopic component 3, and the middle part of a supporting rod 301 is provided with a fixing component 5;
the telescopic component 3 comprises a support rod 301, a limiting block 302, a first electric telescopic rod 303, a support plate 304, an upper clamping plate 305, a lower clamping plate 306 and a discharging chute 307;
a supporting rod 301 is installed at the corner position of the top end of the connecting base 2, a limiting block 302 is installed at the top end of the supporting rod 301, a first electric telescopic rod 303 is installed in the middle of the top end of the connecting base 2, the input end of the first electric telescopic rod 303 is electrically connected with the output end of an external power supply, the model of the first electric telescopic rod 303 is KHE40-D-100, a supporting plate 304 is clamped in the middle of the supporting rod 301, an upper clamping plate 305 is installed at the corner position of the top end of the supporting plate 304, a lower clamping plate 306 is installed at the corner position of the bottom end of the supporting plate 304, the upper clamping plate 305 and the lower clamping plate 306 are identical in structure, the upper clamping plate 305 and the lower clamping plate 306 are clamped with the supporting rod 301, the edge of the supporting plate 304 is conveniently clamped, and a discharging chute 307 is formed in the top end of the supporting plate 304;
the fixing component 5 comprises a connecting rod 501, a threaded hole 502, a threaded rod 503 and a limit round block 504;
connecting rod 501 is installed to bracing piece 301 middle part symmetry, and connecting rod 501 tip runs through set up threaded hole 502, and threaded hole 502 is inside to be connected with threaded rod 503 through thread engagement, and threaded rod 503 both ends symmetry welding has spacing round piece 504, and connecting rod 501 is L type structure, and spacing round piece 504 radius size is threaded rod 503 radius size 1.5 times, conveniently carries on spacingly to threaded rod 503.
The cutting component 4 is welded on the side end face of the supporting plate 304;
the cutting component 4 comprises a mounting base 401, a second electric telescopic rod 402, a mounting rod 403, a strip-shaped mounting groove 404, a cutting blade 405, a baffle 406, a sliding groove 407, a sliding frame 408, a limiting hole 409, a limiting rod 410 and a blocking rod 411;
the side end face of the supporting plate 304 is welded with an installation base 401, the top end of the installation base 401 is provided with a second electric telescopic rod 402, the input end of the second electric telescopic rod 402 is electrically connected with the output end of an external power supply, the model of the second electric telescopic rod 402 is IP800, the end part of the second electric telescopic rod 402 is provided with an installation rod 403 through a bolt, the middle part of the installation rod 403 is provided with a strip-shaped installation groove 404, the middle part of the strip-shaped installation groove 404 is connected with a cutting blade 405, the top end of the supporting plate 304 is symmetrically welded with a baffle 406 corresponding to the positions on the two sides of the cutting blade 405, the outer end face of the baffle 406 is provided with a sliding groove 407, the sliding groove 407 is internally and slidably installed with a sliding frame 408, the distance between the top end of the sliding groove 407 and the baffle 406 is 1cm, the sliding block is symmetrically installed on the inner side of the sliding frame 408, the sliding block is slidably installed inside the sliding groove 407, the sliding frame 408 is convenient for sliding and limiting, the limiting hole 409 is penetrated through and installed on the top end of the limiting hole 409, the limiting rod 410, the outer end face of the limiting rod 410 is installed with a limiting ring, the limiting rod 411 attached to the limiting rod 410.
The working principle and the using process of the invention are as follows: firstly, a support rod 301 is placed on the end face of the side of an extrusion molding machine frame 1, a connecting rod 501 is attached to the extrusion molding machine frame 1, and then a threaded rod 503 is screwed to enable a limiting round block 504 to be tightly abutted against the extrusion molding machine frame 1, so that limiting and fixing of a cutting device are facilitated;
then, a power supply of the first electric telescopic rod 303 is connected, so that the supporting plate 304, the upper clamping plate 305 and the lower clamping plate 306 move upwards along the supporting rod 301, the cutting blade 405 is horizontally aligned with an extrusion opening of the plastic extruding machine, the cutting device is conveniently fixed by pushing of the first electric telescopic rod 303 and fixing of the fixing component 5, the cutting device is connected with the plastic extruding machines with different heights, the application range of the cutting device is wider, and the use efficiency is improved;
when the plastic extrusion die is cut off, the power supply of the second electric telescopic rod 402 is connected, the second electric telescopic rod 402 drives the mounting rod 403 and the cutting blade 405 to move to the position of the plastic extrusion opening, plastics are cut off, when the cutting blade 405 is cut off and contracted, plastic residues remained on the cutting blade 405 are cleaned through the baffles 406 on two sides, the blocking rod 411 is rotated to be parallel to the sliding frame 408 at regular time, the sliding frame 408 moves downwards along the sliding groove 407, the plastic impurities on the surfaces of the baffles 406 are scraped by the sliding frame 408, the plastic impurities on the surfaces of the cutting blade 405 and the baffles 406 are conveniently cleaned, the cutting blade 405 is kept sharp, and the cutting is smoother.
In addition, the screw rod of the plastic extruding machine is improved in a pioneering way, so that the screw rod has flexible adjustability and is convenient to adapt to different extrusion materials; the working portion of the screw can be divided into three sections, a feeding section 61, a melting section (compression section) 62, and a homogenizing section (metering section) 63.
1. And the feeding section is mainly used for compacting and conveying the plastic. The working process of the section is that after the plastic enters the screw from the hopper, the plastic is conveyed forwards and compacted under the action of the rotating screw through the friction action of the inner wall of the machine barrel and the surface of the screw. The plastic remains substantially solid in the feeding section. The length of the screw in the feeding section varies with the type of plastic, with the longest extruded crystalline polymer, the second shortest rigid amorphous polymer and the shortest soft amorphous polymer.
2. The melting section, also called the compression section, has the functions of further compacting and plasticizing the plastic and pressing the air entrained in the plastic back to the feeding port for discharging. The channel section should be of the compression type and the working process is that after the plastic enters the melting section from the feeding section, the plastic is gradually compacted because the channel becomes gradually shallower and the back pressure generated by the screen, perforated plate and head creates high pressure in the plastic as the plastic is continuously conveyed forward. Meanwhile, the materials are heated from the outside of the machine barrel and are strongly stirred, mixed and sheared by the screw and the machine barrel, the materials begin to melt, the liquid phase is continuously increased along with the advancing process, the solid phase is continuously reduced, and all or most of the plastic is converted into a sticky state to the tail end of a melting area. The length of the melting section is mainly related to the viscous flow temperature and other properties of the plastics, the plastics with wide melting temperature range can occupy the whole length of the screw, the melting temperature range is narrow, and the compression section is short. The polyethylene is generally 45% -50% of the total length of the screw.
3. The homogenizing section, also called homogenizing section or metering section, plasticizes the plastic material after entering the homogenizing section, and extrudes the plastic material from the screw at constant pressure, quantity and temperature. The homogenizing section accounts for about 20% -50% of the total length of the screw. In order to avoid dead zone of material flow before the end of screw head, the screw head is designed into cone or semi-circle, and some screw homogenizing sections are a cylinder with smooth surface to form torpedo head, which can save material flow, eliminate pulsation and raise the plasticizing capacity of screw.
The sectional screws of the existing extruding machine are all of an integrally processed structure, and all the sections share the same rotating shaft, so the rotating speeds of the sections are the same, but the optimal configuration of the sections is usually not the same rotating speed of all the sections but needs different rotating speeds due to different functional effects; in addition, different raw materials have different parameters such as melting process, melting temperature, fluidity and the like, the sectional screw of the existing extruding machine is difficult to adapt to the requirements of extruding different raw materials simultaneously, the adaptability is not strong, the extruding process of different materials can be adjusted only by adjusting the melting temperature and the rotating speed of the screw, the sectional screw is rough and far cannot achieve the effect of customizing different materials, and the produced extruding machine is generally universal due to the fact that the cost problem is considered in the production process, the screw cannot be customized and produced according to different materials and formulas, and the cost benefit is not achieved.
Therefore, referring to fig. 5 and 6, the present application, with the greatest feature of developing a new segmented screw 6, which allows different speeds and is adjustable, though the segments are linked; the segmented screw 6 comprises a feeding section 61, a melting section 62 and a homogenizing section 63; the different-speed linkage rotation is realized between the feeding section 61 and the melting section 62 and between the melting section 62 and the homogenizing section 63 through a linkage mechanism respectively.
Further, a protruding shaft 64 extends outwards from the center of one end of each of the feeding section 61 and the homogenizing section 63; the melting section 62 is of a tubular structure; the two convex shafts 64 are inserted and butted from two ends of the melting section 62 respectively; the outer diameter of the convex shaft 64 is smaller than the inner diameter of the melting section 62, and the convex shaft can rotate relative to the melting section 62; the inner wall of the melting section 62 and the outer walls of the two convex shafts 64 respectively enclose a sealed cavity 65; the sealed cavity 65 is filled with electrorheological fluid 66; the melting section 62 is provided with protruding external tooth plates 67 at intervals on the inner wall of the sealing cavity 65; the feeding section 61 and the homogenizing section 63 are positioned on the outer wall of the sealed cavity 65, and inner toothed plates 68 are arranged at intervals corresponding to the outer toothed plates 67; the outer toothed plate 67 and the inner toothed plate 68 have a gap therebetween so as not to interfere; the electrorheological fluids 66 in the two sealed cavities 65 are respectively applied with an electric field by an independent circuit; the outer toothed plate 67 and the inner toothed plate 68 are respectively used as positive and negative poles to apply an electric field to the electrorheological fluid 66, the two side faces of the outer toothed plate 67 and the two side faces of the inner toothed plate 68 are firstly attached with insulating sheets, and then the insulating sheets are attached with conductive electrode sheets, so that the current can be prevented from being conducted to the outside through the screw rods, and danger and waste of electric energy are avoided.
Furthermore, two stoppers 641 are arranged outside the protruding shaft 64 at intervals, and a first piston ring 642 is embedded in the outer circumferential surface of each stopper 641; the first piston ring 642 seals against the inner wall of the melt section 62 for sealed rotation; the stopper 641, the outer wall of the protruding shaft 64 and the inner wall of the melting section 62 enclose the sealing cavity 65; the protruding shafts 64 outside the two stoppers 641 are further respectively sleeved with a bearing 643; the outer race of the bearing 643 abuts against the inner wall of the melt section 62.
Further, a sealing sleeve 69 is respectively hooped at the boundary of the outer walls of the feeding section 61 and the melting section 62 and at the boundary of the outer walls of the melting section 62 and the homogenizing section 63; a plurality of outer annular grooves are formed in the inner wall of the sealing sleeve 69; inner annular grooves are also formed in the outer walls of the feeding section 61, the melting section 62 and the homogenizing section 63 corresponding to the outer annular grooves, a plurality of second piston rings 693 are embedded in the outer annular grooves and the inner annular grooves respectively, and the corresponding outer annular grooves and inner annular grooves are embedded by one second piston ring 693, so that the feeding section 61, the melting section 62 and the homogenizing section 63 can rotate relative to the sealing sleeve 69, and the axial displacement is limited by the sealing sleeve 69; the outer circumferential surface of the sealing sleeve 69 is a cambered surface on an axial tangent plane so as to avoid blocking the advance of the material.
The working principle of the sectional type screw rod is as follows: the external motor drives the sectional type screw 6 to rotate by the other end of the feeding section 61 of the sectional type screw 6; at the moment, according to the added extrusion molding raw materials and different formulas, technologists know the optimal speed distribution of each section of screw rod at the moment according to a large amount of preliminary research, the computer automatically adjusts the circuit current, the outer toothed plate 67 and the inner toothed plate 68 are respectively used as positive and negative poles to apply an electric field to the electrorheological fluid 66, and the outer toothed plate 67 and the inner toothed plate 68 are directly and uniformly contacted with the electrorheological fluid, so that the electrorheological fluid can be used as an electrode for applying the electric field and a linkage component for conducting shearing force, the structural characteristics of the electrorheological fluid can be effectively utilized, meanwhile, the viscosity of the electrorheological fluid 66 is prevented from being controlled, when the intensity of the externally-applied electric field is greatly lower than a certain critical value, the electrorheological fluid is in a liquid state, and at the moment, the rotation of the feeding section 61 cannot drive the melting section 62 and the homogenizing section 63 to rotate; when the electric field intensity is much higher than the critical value, the electric field intensity becomes solid, and at the moment, the two sections of the linkage of the electrorheological fluid 66 become a whole and have the same rotating speed; at the critical value of the electric field intensity, the viscosity of the electrorheological fluid 66 is increased along with the increase of the electric field intensity, at this time, the electrorheological fluid 66 is not liquid or solid and has stronger shearing resistance, so that the two segments can be linked to rotate without enabling the two segments to have the same speed; therefore, the rotating speed of each segment can be controlled by controlling the external electric field intensity of the electrorheological fluid 66 between the feeding section 61 and the melting section 62 and the external electric field intensity of the electrorheological fluid 66 between the melting section 62 and the homogenizing section 63, and due to the characteristics of the electrorheological fluid 66, when the feeding section 61 is a power input section, the rotating speed of the melting section 62 is less than or equal to the rotating speed of the feeding section 61, and the rotating speed of the homogenizing section 63 is less than or equal to the rotating speed of the melting section 62, which just fits the change of the volume of the inner cavity of the extruding machine, and the adjustable parameters can be enough to meet the requirements of different materials, formulas and injection molding processes.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described above, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (6)

1. The utility model provides a portable cutting device based on plastics extruding machine, includes extrusion molding frame (1), its characterized in that: the plastic extruding machine frame is characterized in that a connecting base (2) is installed at the bottom of one side of the plastic extruding machine frame (1), a supporting rod (301) is installed at the corner position of the top end of the connecting base (2), a fixing component (5) is installed in the middle of the supporting rod (301), a limiting block (302) is installed at the top end of the supporting rod (301), a first electric telescopic rod (303) is installed in the middle of the top end of the connecting base (2), the input end of the first electric telescopic rod (303) is electrically connected with the output end of an external power supply, a supporting plate (304) is clamped in the middle of the supporting rod (301), a cutting component (4) is welded on the side end face of the supporting plate (304), an upper clamping plate (305) is installed at the corner position of the top end of the supporting plate (304), a lower clamping plate (306) is installed at the corner position of the bottom end of the supporting plate (304), and a discharging chute (307) is formed in the top end of the supporting plate (304); the extruder comprises a segmented screw (6); the segmented screw (6) comprises a feeding section (61), a melting section (62) and a homogenizing section (63); the different-speed linkage rotation is realized between the feeding section (61) and the melting section (62) and between the melting section (62) and the homogenizing section (63) through a linkage mechanism respectively; one end centers of the feeding section (61) and the homogenizing section (63) extend outwards to form a protruding shaft (64) respectively; the melting section (62) is of a tubular structure; the two convex shafts (64) are inserted and butted from two ends of the melting section (62) respectively; the outer diameter of the convex shaft (64) is smaller than the inner diameter of the melting section (62), and the convex shaft can rotate relative to the melting section (62); the inner wall of the melting section (62) and the outer walls of the two convex shafts (64) respectively enclose a sealed cavity (65); electrorheological fluid (66) is filled in the sealed cavity (65); the inner wall of the melting section (62) positioned in the sealed cavity (65) is provided with protruding outer toothed plates (67) at intervals; the feeding section (61) and the homogenizing section (63) are positioned on the outer wall of the sealed cavity (65), and inner toothed plates (68) are arranged on the outer wall of the sealed cavity at intervals corresponding to the outer toothed plates (67); the outer toothed plate (67) and the inner toothed plate (68) have a clearance therebetween so as not to interfere; the electrorheological fluids (66) in the two sealed cavities (65) are respectively applied with an electric field by an independent circuit; the outer toothed plate (67) and the inner toothed plate (68) are respectively used as a positive pole and a negative pole to apply an electric field to the electrorheological fluid (66); two stop blocks (641) are arranged outside the protruding shaft (64) at intervals, and a first piston ring (642) is embedded in the outer circumferential surface of each stop block (641); the first piston ring (642) seals against an inner wall of the melt section (62) to effect sealed rotation; the stop block (641), the outer wall of the convex shaft (64) and the inner wall of the melting section (62) enclose the sealing cavity (65); the convex shafts (64) outside the two stoppers (641) are respectively sleeved with a bearing (643); the bearing (643) outer ring abuts against the inner wall of the melting section (62); a sealing sleeve (69) is respectively hooped at the boundary of the outer walls of the feeding section (61) and the melting section (62) and the boundary of the outer walls of the melting section (62) and the homogenizing section (63); a plurality of outer annular grooves are formed in the inner wall of the sealing sleeve (69); inner annular grooves are formed in the outer walls of the feeding section (61), the melting section (62) and the homogenizing section (63) corresponding to the outer annular grooves, a plurality of second piston rings (693) are embedded in the outer annular grooves and the inner annular grooves respectively, and the corresponding outer annular grooves and the corresponding inner annular grooves are embedded by one second piston ring (693) to enable the feeding section (61), the melting section (62) and the homogenizing section (63) to rotate relative to the sealing sleeve (69) and limit axial displacement by the sealing sleeve (69); the outer circumferential surface of the sealing sleeve (69) is a cambered surface on an axial tangent plane so as to avoid blocking the advance of the material.
2. The portable cutting device based on the plastic extruder is characterized in that the upper clamping plate (305) and the lower clamping plate (306) have the same structure, and the upper clamping plate (305) and the lower clamping plate (306) are clamped with the support rod (301).
3. The portable cutting device based on a plastic extruder of claim 1, characterized in that the fixing assembly (5) comprises a connecting rod (501), a threaded hole (502), a threaded rod (503) and a limit round block (504);
connecting rods (501) are symmetrically arranged in the middle of the supporting rod (301), a threaded hole (502) penetrates through the end of each connecting rod (501), a threaded rod (503) is connected inside each threaded hole (502) in a threaded engagement mode, and limiting round blocks (504) are symmetrically welded at two ends of each threaded rod (503);
the connecting rod (501) is of an L-shaped structure, and the radius of the limiting round block (504) is 1.5 times that of the threaded rod (503).
4. The portable cutting device based on the plastic extruder as claimed in claim 1, wherein the cutting assembly (4) comprises a mounting base (401), a second electric telescopic rod (402), a mounting rod (403), a strip-shaped mounting groove (404), a cutting blade (405), a baffle (406), a sliding groove (407), a sliding frame (408), a limiting hole (409), a limiting rod (410) and a stop rod (411);
the utility model discloses a solar energy collector, including backup pad (304), backup pad (304) side end face welding has installation base (401), second electric telescopic handle (402) is installed on installation base (401) top, the input of second electric telescopic handle (402) and external power source's output electric connection, installation pole (403) are installed through the bolt to second electric telescopic handle (402) tip, bar mounting groove (404) have been seted up at installation pole (403) middle part, bar mounting groove (404) middle part joint has cutting blade (405), backup pad (304) top corresponds cutting blade (405) both sides position department symmetry welding has baffle (406), spout (407) have been seted up to baffle (406) outside terminal surface, spout (407), inside slidable mounting has sliding frame (408), sliding frame (408) top is run through and has been seted up spacing hole (409), spacing hole (409) inside rotation installs gag lever (410), shelves pole (411) are installed on gag lever (410) top.
5. The portable cutting device based on plastic extruder as claimed in claim 4, characterized in that the distance between the top of the sliding groove (407) and the baffle (406) is 1cm, and the inside of the sliding frame (408) is symmetrically installed with sliding blocks, which are slidably installed inside the sliding groove (407).
6. The portable cutting device based on the plastic extruder as claimed in claim 5, wherein the limiting rod (410) is provided with a limiting stop ring at the outer end surface of the bottom, and the limiting stop ring is attached to the bottom end of the sliding frame (408).
CN202011366646.3A 2020-11-30 2020-11-30 Portable cutting device based on plastics extruding machine Active CN112549476B (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10309719A (en) * 1997-05-12 1998-11-24 Yoshinori Miyano Cutter for waste plastic mass
CN204585790U (en) * 2015-05-07 2015-08-26 浙江海洋学院 A kind of combined type fretting map screw rod
CN109877901A (en) * 2019-03-05 2019-06-14 泉州台商投资区本盛机械科技有限公司 A kind of automatic cutting means of pvc pipe
CN110696246A (en) * 2019-10-23 2020-01-17 湖北正信管件有限公司 Production equipment for rubber products
CN110861131A (en) * 2019-11-12 2020-03-06 西安兰鑫工业自动化工程有限公司 Industrial automation cuts mucilage binding and puts
CN211491691U (en) * 2019-12-26 2020-09-15 江苏德雷奥洁具有限公司 Cutting device for plastic processing plastic extruding machine

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10309719A (en) * 1997-05-12 1998-11-24 Yoshinori Miyano Cutter for waste plastic mass
CN204585790U (en) * 2015-05-07 2015-08-26 浙江海洋学院 A kind of combined type fretting map screw rod
CN109877901A (en) * 2019-03-05 2019-06-14 泉州台商投资区本盛机械科技有限公司 A kind of automatic cutting means of pvc pipe
CN110696246A (en) * 2019-10-23 2020-01-17 湖北正信管件有限公司 Production equipment for rubber products
CN110861131A (en) * 2019-11-12 2020-03-06 西安兰鑫工业自动化工程有限公司 Industrial automation cuts mucilage binding and puts
CN211491691U (en) * 2019-12-26 2020-09-15 江苏德雷奥洁具有限公司 Cutting device for plastic processing plastic extruding machine

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