CN218535560U - Secondary forming device for viscous plastic pipe - Google Patents
Secondary forming device for viscous plastic pipe Download PDFInfo
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- CN218535560U CN218535560U CN202223081171.0U CN202223081171U CN218535560U CN 218535560 U CN218535560 U CN 218535560U CN 202223081171 U CN202223081171 U CN 202223081171U CN 218535560 U CN218535560 U CN 218535560U
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Abstract
The utility model discloses a secondary forming device for viscous plastic pipes, which relates to the technical field of plastic forming equipment and comprises a core mould, a forming mould sleeved outside the core mould and two extrusion wheels, wherein the two extrusion wheels are both positioned at the front end of the forming mould and are in contact with each other and symmetrically arranged by taking the core mould as a center; the circumferential surface of the extrusion wheels is provided with semicircular annular grooves, and the annular grooves of the two extrusion wheels form a circular cavity which is coaxial with the core mold and is used for forming the outer wall of the pipe; the core die is used for forming the inner wall of the pipe; the two extrusion wheels are connected with a power source and synchronously rotate backwards relative to each other; the extrusion wheel that this device was add not only has the shaping effect to the material, still has the effect of onward transport, has promoted production efficiency effectively.
Description
Technical Field
The utility model relates to a plastic molding equipment technical field, concretely relates to viscidity plastics tubular product secondary method forming device.
Background
The existing ultra-high molecular polyethylene pipe is manufactured by adopting an extrusion molding process, materials are added into an extruder, the materials are preheated by a heating device and friction outside a machine barrel under the extrusion pushing action, the materials are melted and plasticized under the conditions of high temperature and high pressure, then the melted materials are pushed into a machine head die, and the melted materials extruded from the machine head die are cooled and shaped to form the required ultra-high molecular polyethylene product.
However, the traditional extrusion molding equipment has low production efficiency, and the condition can occur because the ultra-high molecular polyethylene has high relative molecular mass, long molecular chain, more physical entanglement points, large intermolecular acting force, large internal friction force, high viscosity and difficult flowing.
Therefore, it is urgently required to develop a molding apparatus having a high production speed.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a viscidity plastics tubular product secondary method forming device to the defect that prior art exists.
The technical scheme of the utility model is that: a secondary forming device for viscous plastic pipes comprises a core mould, a forming mould sleeved outside the core mould and two extrusion wheels, wherein the two extrusion wheels are positioned at the front end of the forming mould and are in contact with each other and symmetrically arranged by taking the core mould as a center; the periphery of the extrusion wheels is provided with semicircular annular grooves, and the annular grooves of the two extrusion wheels form a circular cavity which is coaxial with the core mold and is used for forming the outer wall of the pipe; the core mold is used for forming the inner wall of the pipe.
Preferably, the device also comprises a compression mould and a screw extruder, wherein the screw extruder, the compression mould and the forming mould are fixedly connected in sequence from back to front.
Preferably, the two squeezing wheels are connected with a power source and rotate relatively in synchronization.
Compared with the prior art, the utility model, have following advantage:
the extrusion wheel additionally arranged in the device has a material forming effect and a forward conveying effect, so that the production efficiency is effectively improved; the forming die of the device carries out primary shaping on the melted material, and the inner cavity of the forming die is larger, so that the production speed is further increased; this device simple structure, the practicality is strong, can directly reform transform traditional extrusion moulding equipment.
Drawings
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a cross-sectional view of the extrusion wheel.
In the figure: 1. a screw extruder, 2, a compression die, 3, a forming die, 4, a core die, 5, an extrusion wheel, 501 and an annular groove.
Detailed Description
The following is a further description of the present invention with reference to the drawings and examples.
Example one
Referring to fig. 1-2, a device for molding a viscous plastic pipe by a secondary method comprises a core mold 4, a molding mold 3 sleeved outside the core mold 4, and two extrusion wheels 5, wherein the two extrusion wheels 5 are both positioned at the front end of the molding mold 3 and are in contact with each other and symmetrically arranged by taking the core mold 4 as a center; the circumferential surface of the extrusion wheels 5 is provided with semicircular annular grooves 501, and the annular grooves 501 of the two extrusion wheels 5 form a circular cavity which is coaxial with the core mould 4 and is used for forming the outer wall of the pipe; the core mold 4 is used for molding the inner wall of the pipe.
In more detail, the two squeezing wheels 5 are both connected with a power source, and the two squeeze wheels synchronously rotate relatively backwards.
Still include compression mould 2 and screw extruder 1, compression mould 2 and forming die 3 are fixed connection in proper order from the back to the front, and the inner chamber of three communicates in proper order.
In addition, the inner cavity of the forming die 3 of the embodiment is larger than that of the forming die 3 of the traditional extrusion forming device, and the forming die is mainly extruded and formed by the extrusion wheel 5.
When the device is used, the screw extruder 1 conveys the molten material forwards in a spiral mode, the molten material is compressed in the compression die 2, then the molten material enters the forming die 3 for primary performance setting, and finally the molten material is subjected to secondary size setting under the extrusion of the two extrusion wheels 5 and the core die 4 to form a product pipe.
The extrusion wheel 5 additionally arranged on the device not only has a molding effect on materials, but also has a forward conveying effect, so that the production efficiency is effectively improved; the forming die 3 of the device carries out primary shaping on the melted material, and the inner cavity of the forming die is larger, so that the production speed is further accelerated; this device simple structure, the practicality is strong, can directly reform transform traditional extrusion moulding equipment.
The present invention is not limited to the above-described embodiments, and various changes can be made within the knowledge range of those skilled in the art without departing from the spirit of the present invention, and the changed contents still belong to the protection scope of the present invention.
Claims (3)
1. The utility model provides a viscosity plastics tubular product secondary method forming device, includes the mandrel and overlaps the forming die who establishes in the mandrel outside which characterized in that: the two extrusion wheels are positioned at the front end of the forming die, are in contact with each other and are symmetrically arranged by taking the core die as the center; the periphery of the extrusion wheels is provided with semicircular annular grooves, and the annular grooves of the two extrusion wheels form a circular cavity which is coaxial with the core mold and is used for forming the outer wall of the pipe; the core die is used for forming the inner wall of the pipe.
2. The apparatus of claim 1, wherein the apparatus comprises: the screw extruder, the compression mold and the forming mold are fixedly connected in sequence from back to front.
3. The apparatus of claim 1, wherein the apparatus comprises: and the two extrusion wheels are connected with a power source and synchronously rotate relatively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223081171.0U CN218535560U (en) | 2022-11-21 | 2022-11-21 | Secondary forming device for viscous plastic pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223081171.0U CN218535560U (en) | 2022-11-21 | 2022-11-21 | Secondary forming device for viscous plastic pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218535560U true CN218535560U (en) | 2023-02-28 |
Family
ID=85263905
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223081171.0U Active CN218535560U (en) | 2022-11-21 | 2022-11-21 | Secondary forming device for viscous plastic pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218535560U (en) |
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2022
- 2022-11-21 CN CN202223081171.0U patent/CN218535560U/en active Active
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