CN219006952U - PVC extruder - Google Patents

Abstract

The utility model relates to the technical field of equipment used for extrusion molding, in particular to a PVC extruder, which comprises a control mechanism, a conveying pipe and an extrusion head, wherein the conveying pipe is provided with a feeding end and a discharging end, a spiral pushing piece is arranged in the conveying pipe through shaft rod rotation, the feeding end of the conveying pipe is connected with the control mechanism, the discharging end of the conveying pipe is connected with the extrusion head, the PVC extruder also comprises a plurality of solid material filtering pieces, the solid material filtering pieces are uniformly distributed in a spiral gap of the spiral pushing piece, the solid material filtering pieces comprise a filter screen frame and a mounting frame, the filter screen frame is fixedly arranged on the periphery of the shaft rod through the mounting frame, and a positioning frame is arranged at the upper part of the filter screen frame. According to the PVC extruder, the plurality of filter screen frames are additionally arranged on the basis of the traditional spiral extrusion rod, so that the filter screen frames synchronously rotate along with the shaft rod, unmelted solid materials in the PVC melt are picked out, the content of the solid materials in the extrusion melt is reduced, and the quality of extruded workpieces is ensured.

Description

PVC extruder

Technical Field

The utility model relates to the technical field of equipment used for extrusion molding, in particular to a PVC extruder.

Background

PVC is a polymer material obtained by addition polymerization of vinyl chloride, and is a third most widely produced synthetic plastic polymer after polyethylene and polypropylene, and when PVC is used for producing products, a screw extruder is required to extrude the PVC material.

Through searching, the patent with the publication number of CN213767128U discloses a PVC pipe extruder, when a melt pump conveys the pipe to the right side, the PVC pipe extruder penetrates through the inner parts of the outer frame body and the inner frame body, and utilizes the cooperation of a cooling fan and a wind collecting cover to be used, so that the surface of the pipe in the conveying process is cooled and radiated conveniently, the wind collecting cover surrounding the pipe is utilized, the heat radiation efficiency of the pipe is improved, and a heat insulation cavity arranged between the outer frame body and the inner frame body is utilized, the direct contact between the cooling fan and the pipe with higher temperature is reduced, and the service life of the cooling fan is prolonged.

The extruder generally carries out transportation and extrusion processing on PVC solid materials after the PVC solid materials are melted into molten materials, so as to form PVC workpieces, the molten materials after the hot melting are not filtered in the process, the molten materials possibly contain part of unmelted solid materials due to unexpected factors, and when the part of unmelted solid materials are extruded and enter the PVC workpieces, the quality of the workpieces can be greatly influenced.

Disclosure of Invention

In order to solve the problems that the existing extruder is lack of a filtering mechanism, so that molten materials are easy to mix into unmelted solid materials and the quality of a later-stage PVC workpiece is affected, the utility model provides the PVC extruder, which is used for filtering the molten materials by arranging a filter screen frame on the periphery of an extrusion screw, so that the mixed unmelted solid materials in the molten materials are reduced, and the quality of the extruded PVC workpiece is improved.

The utility model provides a PVC extruder which comprises a control mechanism, a conveying pipe and an extrusion head, wherein the conveying pipe is provided with a feeding end and a discharging end, a spiral pushing piece is arranged in the conveying pipe through shaft rod rotation, the feeding end of the conveying pipe is connected with the control mechanism, the discharging end of the conveying pipe is connected with the extrusion head, the PVC extruder further comprises a plurality of solid material filtering pieces, the solid material filtering pieces are uniformly distributed in a spiral gap of the spiral pushing piece, and the solid material filtering pieces are fixedly arranged on the shaft rod. The molten material is filtered by a solid material filter member which rotates along with the shaft to avoid mixing of unmelted solid material into the molten material.

Further, the solid material filter comprises a filter screen frame and a mounting frame, and the filter screen frame is fixedly arranged on the periphery of the shaft rod through the mounting frame. The filter screen frame is stably installed on the shaft rod through the installation frame.

Further, the filter screen frame upper portion is equipped with the locating frame, and the locating frame passes through the connecting piece fixed establishment on the mounting bracket. The filter screen frame is installed through the cooperation of locating frame and connecting piece.

Further, the connecting piece is a magnetic stripe arranged on the upper surface of the mounting frame, and the positioning frame is made of a metal material which can be adsorbed by the magnetic stripe. The installation of the filter screen frame is completed in a magnetic attraction mode, so that the installation is convenient and quick.

Further, the mounting frame comprises a U-shaped frame and two support rods, the two support rods are arranged on two sides of the filter screen frame, and the U-shaped frame is connected with the two support rods. Through the cooperation of U type frame and bracing piece, with the fixed frame of net frame erect on the mounting bracket.

Further, two side rods of the U-shaped frame are provided with rod grooves capable of accommodating the supporting rods, one ends of the supporting rods are fixedly connected with the shaft rods, and the other ends of the supporting rods are slidably arranged in the rod grooves of the U-shaped frame. The U-shaped frame and the support rod are in sliding fit, so that the screen frame is convenient to assemble and disassemble.

Further, the control mechanism comprises a control panel and a bin, and the bin is communicated with the conveying pipe. Extrusion is controlled by a control panel.

Further, the conveying pipe is also provided with an access door convenient to clean. The access door is hinged on the conveying pipe, so that the filter screen frame is conveniently pulled out and then detached for dumping.

The utility model has the beneficial effects that:

the utility model provides a PVC extruder, which is characterized in that a plurality of filter screen frames are additionally arranged on the basis of a traditional spiral extrusion rod, so that the filter screen frames synchronously rotate along with a shaft rod, unmelted solid materials in PVC melt are picked out, the content of the solid materials in the extrusion melt is reduced, and the quality of extruded workpieces is ensured.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of the structure of a PVC extruder;

FIG. 2 is an internal block diagram of the feed conveyor pipe;

FIG. 3 is a schematic view of a structure of a filter screen frame;

FIG. 4 is a first angular schematic view of the mounting bracket;

FIG. 5 is a second angular schematic view of the mounting bracket;

in the figure, a control mechanism 1, a control panel 12, a storage bin 2, a material conveying pipe 21, a material feeding end 22, a material discharging end 23, a shaft rod 24, a spiral pushing sheet 3, an extrusion head 4, a solid material filtering piece 41, a filter screen frame 42, a mounting frame 421, a U-shaped frame 422, a supporting rod 423, a rod groove 43, a positioning frame 44, a magnetic strip and an access door 5.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown.

For filtering unmelted solid material in a feed pipe 2 of an extruder, a PVC extruder is designed, as shown in fig. 1, comprising a control mechanism 1, a feed pipe 2 and an extrusion head 3, the feed pipe 2 having a feed end 21 and a discharge end 22, a screw pushing piece 24 being rotatably arranged in the feed pipe 2 by means of a shaft 23, the feed end 21 of the feed pipe 2 being connected to the control mechanism 1, the discharge end 22 of the feed pipe 2 being connected to the extrusion head 3. In the use process, the control mechanism 1 controls the conveying pipe 2 to carry out hot melting on the PVC material in the conveying pipe to form PVC melting stock, and the PVC melting stock is extruded from the extrusion head 3 under the conveying of the spiral pushing sheet 24.

As shown in fig. 2, the device is different from the prior art in that the device further comprises a plurality of solid material filtering pieces 4, wherein the solid material filtering pieces 4 are uniformly distributed in the spiral gap of the spiral pushing piece 24, and the solid material filtering pieces 4 are fixedly arranged on the shaft rod 23. When the shaft rod 23 rotates, the spiral pushing piece 24 and the solid material filtering piece 4 are driven to rotate simultaneously, when the spiral pushing piece 24 rotates, the PVC melt is driven to move towards one end of the extrusion head 3, the PVC melt is transported, unmelted solid materials in the PVC melt can be separated out when the solid material filtering piece 4 rotates, so that the content of unmelted solid materials mixed in the melt is reduced, and the quality of extruded workpieces is ensured.

Specifically, the solid material filter 4 includes a filter screen frame 41 and a mounting frame 42, and the filter screen frame 41 is fixedly disposed on the periphery of the shaft 23 through the mounting frame 42. The opening of the filter screen frame 41 faces the rotation direction of the spiral pushing plate 24, when the installation frame 42 drives the filter screen frame 41 to rotate, the molten material can enter the filter screen frame 41 through the opening of the filter screen frame, the molten material which is completely melted is discharged from the filter screen holes of the filter screen frame, and unmelted solid materials remain in the filter screen frame 41. The mesh specification or the number of the filter screen frames 41 are replaced according to actual use requirements.

The control mechanism 1 comprises a control panel 11 and a bin 12, and the bin 12 is communicated with the conveying pipe 2. The bin 12 is provided with a sealing cover plate, the interior of which stores the material to be melted, and the extrusion action is controlled by the control panel 11, and the structure of the bin is the mature prior art.

In order to facilitate the removal of the screen frame, the feed delivery pipe 2 is also provided with an access door 5 which is convenient to clean. When the filter screen frame 41 is cleaned, the access door 5 is opened, and then the U-shaped frame 421 of the installation frame 42 which is rotated to the access opening is pulled, so that the U-shaped frame 421 is pulled out along the supporting rod 422, and the filter screen frame 41 can be easily taken down from the U-shaped frame 421 to pour solid materials inside the filter screen frame 41.

As shown in fig. 3, in order to facilitate the installation of the filter screen frame 41, a positioning frame 43 is provided at the upper part of the filter screen frame 41, and the positioning frame 43 is fixedly installed on the installation frame 42 through a connecting member. Specifically, the connecting piece is a magnetic stripe 44 arranged on the upper surface of the mounting frame 42, and the positioning frame 43 is made of a metal material capable of being adsorbed by the magnetic stripe 44. When the filter screen frame 41 is mounted on the mounting frame 42, the filter screen frame 41 is fixed through the adsorption action of the magnetic strips 44 and the metal positioning frame 43.

As shown in fig. 4 and 5, in order to facilitate the removal of the screen frame, the mounting frame 42 includes a U-shaped frame 421 and two support rods 422, the two support rods 422 are disposed on two sides of the screen frame 41, the U-shaped frame 421 is connected with the two support rods 422, two side rods of the U-shaped frame 421 are provided with rod grooves 423 capable of accommodating the support rods 422, one end of each support rod 422 is fixedly connected with the shaft rod 23, and the other end of each support rod 422 is slidably disposed in the rod groove 423 of the U-shaped frame 421. The U-shaped frame 421 can slide relative to the support rod 422, so that the filter screen frame 41 can be conveniently pulled out of the spiral gap for taking and placing.

Through setting up with spiral pushing plate 24 synchronous pivoted solid material filter 4, sort the inside unmelted solid material of PVC melt at the in-process of carrying the PVC melt, reduce the content of mixed unmelted solid material in the melt, improve the PVC work piece quality of extruding, and carry out PVC melt transportation process and solid impurity material letter sorting process together, can reduce process time, improve work efficiency, simultaneously, also can avoid appearing unmelted solid material card to establish in extrusion head 3 department jam extrusion head 3, influence the circumstances of extruding normally going on.

The above description is illustrative of the utility model and is not to be construed as limiting, and it will be understood by those skilled in the art that many modifications, changes or equivalents may be made without departing from the spirit and scope of the utility model as defined in the appended claims.

Claims (8)

1. A PVC extruder, comprising

A control mechanism (1),

a material conveying pipe (2), wherein the material conveying pipe (2) is provided with a material feeding end (21) and a material discharging end (22), a spiral material pushing sheet (24) is rotatably arranged in the material conveying pipe (2) through a shaft lever (23), and

an extrusion head (3),

the feeding end (21) of the conveying pipe (2) is connected with the control mechanism (1), the discharging end (22) of the conveying pipe (2) is connected with the extrusion head (3),

the novel spiral pushing plate is characterized by further comprising a plurality of solid material filtering pieces (4), wherein the solid material filtering pieces (4) are uniformly distributed in a spiral gap of the spiral pushing plate (24), and the solid material filtering pieces (4) are fixedly arranged on the shaft rod (23).

2. A PVC extruder according to claim 1, wherein: the solid material filter (4) comprises a filter screen frame (41) and a mounting frame (42), and the filter screen frame (41) is fixedly arranged on the periphery of the shaft lever (23) through the mounting frame (42).

3. A PVC extruder according to claim 2, wherein: the upper portion of the filter screen frame (41) is provided with a positioning frame (43), and the positioning frame (43) is fixedly arranged on the mounting frame (42) through a connecting piece.

4. A PVC extruder according to claim 3, wherein: the connecting piece is a magnetic stripe (44) arranged on the upper surface of the mounting frame (42), and the positioning frame (43) is made of a metal material which can be adsorbed by the magnetic stripe (44).

5. A PVC extruder according to claim 4, wherein: the installation frame (42) comprises a U-shaped frame (421) and two supporting rods (422), the two supporting rods (422) are arranged on two sides of the filter screen frame (41), and the U-shaped frame (421) is connected with the two supporting rods (422).

6. A PVC extruder according to claim 5, wherein: two side rods of the U-shaped frame (421) are provided with rod grooves (423) capable of accommodating the supporting rods (422), one ends of the supporting rods (422) are fixedly connected with the shaft rods (23), and the other ends of the supporting rods are arranged in the rod grooves (423) of the U-shaped frame (421) in a sliding mode.

7. A PVC extruder according to claim 2, wherein: the control mechanism (1) comprises a control panel (11) and a storage bin (12), and the storage bin (12) is communicated with the conveying pipe (2).

8. A PVC extruder according to claim 1, wherein: and an access door (5) which is convenient to clean is further arranged on the conveying pipe (2).

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