CN205086167U - Heat exchanger tubes extrusion moulding mould - Google Patents
Heat exchanger tubes extrusion moulding mould Download PDFInfo
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- CN205086167U CN205086167U CN201520872277.3U CN201520872277U CN205086167U CN 205086167 U CN205086167 U CN 205086167U CN 201520872277 U CN201520872277 U CN 201520872277U CN 205086167 U CN205086167 U CN 205086167U
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- external mold
- heat exchanger
- tube sheet
- extrusion molding
- molding mould
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Abstract
The utility model relates to a heat exchanger tubes extrusion moulding mould. This mould includes mold core and external mold, the external mold includes first external mold and second external mold, the mold core includes circular cone portion and cylinder portion, the mold core link up the cavity formation work inner chamber of setting in the external mold, between mold core and the external mold. Heat exchanger tubes extrusion moulding mould, circular cone portion have avoided owing to extrude the too big mud material backward flow that leads to of mouthful intermediate stress and extrude the mud material because the uneven shrinkage deformation problem that produces of atress to the piece is extruded to the heat exchanger tubes that obtains size precision great.
Description
Technical field
The utility model relates to a kind of Tube Sheet of Heat Exchanger extrusion molding mould, belongs to the technical field of pipeline mould.
Background technology
Extruding-out process processes the high and applicable production uiform section goods of the moulded products output obtained, and the mixtures such as ceramic powder can be extruded by this technique under low-temp low-pressure condition, and range of application is wider.Extruding-out process is often used in Tube Sheet of Heat Exchanger, holds in the process of producing product such as sintered plate.Although adopt hard plastic extrusion molding can improve the dimensional stability of product, require higher to the strength and stability of mould, the service life of existing extrusion molding mould is all general shorter.
Tube Sheet of Heat Exchanger extrusion molding mould of the prior art, its workspace inner chamber is straight cylindrical cavity, this structure in extrusion because extrusion pressure is uneven, make the Tube Sheet of Heat Exchanger each several part moisture difference extruded, the problem on deformation such as bending, volume sticks up, cracking can be produced in later stage dry sintering process, have impact on product quality, reduce product percent of pass.
Utility model content
For the deficiencies in the prior art, the utility model provides a kind of Tube Sheet of Heat Exchanger extrusion molding mould.
The technical solution of the utility model is as follows:
A kind of Tube Sheet of Heat Exchanger extrusion molding mould, comprises core rod and external mold; Described core rod comprises conus portion and cylindrical portion; Described external mold comprises the first external mold and the second external mold that match with conus portion and cylindrical portion respectively; Described core rod is through to be arranged in external mold, and the cavity between core rod and external mold forms working cavities.Described core rod comprises conus portion and cylindrical portion is one-body molded; Conus portion avoids the pug backflow that causes because extrusion intermediate stress is excessive and extrudes the contraction distortion problem that pug produces due to unbalance stress, thus obtains the larger Tube Sheet of Heat Exchanger extrusion of dimensional accuracy.
Preferably, the cross section of described working cavities is annular; Described first external mold comprises open top and bottom opening.
Preferably, described open-topped internal diameter is 40-60mm, and bottom opening internal diameter is 20-25mm, and the first external mold height is 30-50mm, and bottom opening height is 4-14mm, and the inner cavity taper of the first external mold is 30-55 °; Described second external mold internal diameter is 20-25mm, and length is 50-75mm.
Preferably, the outer end diameter of described conus portion is 20-22mm, and the external diameter of described cylindrical portion is 10-25mm, and the tapering of described conus portion is 20-35 °.The tapering of conus portion is less, and extrusion pressure is less, and extruded velocity is faster, and extruded product surface is more coarse, otherwise the tapering of conus portion is larger, and extrusion pressure is large, and extruded velocity is slow, but product surface is smooth; The tapering of conus portion remains on 20-35 ° and ensure rate of extrusion again while guarantee product surface is smooth.
Preferably, the end of described conus portion is provided with columnar projections, and the outer wall of described columnar projections is provided with external screw thread.External screw thread realizes linking with extruder mould bases, plays fixation.
Preferably, the outer wall of described external mold is provided with multiple collar; The described collar is around the outer wall one week of external mold.The collar improves the anti-pressure ability of external mold, ensures again the portability of whole device simultaneously.
The production method of Tube Sheet of Heat Exchanger extrusion molding mould described in the utility model is as follows: first obtain green compact by injection forming, carry out fine finishining again, process for calcining is reaction-sintered, utilize wire cutting technology to revise dies cavity size the firing mould obtained, reduce mold cavity surfaces roughness finally by polishing.
The usefulness of this utility model is:
1, Tube Sheet of Heat Exchanger extrusion molding mould described in the utility model, conus portion avoids the pug backflow that causes because extrusion intermediate stress is excessive and extrudes the contraction distortion problem that pug produces due to unbalance stress, thus obtains the larger Tube Sheet of Heat Exchanger extrusion of dimensional accuracy;
2, Tube Sheet of Heat Exchanger extrusion molding mould described in the utility model, reasonable in design, extrusion pressure is moderate, and product surface is smooth, and production efficiency is high;
3, Tube Sheet of Heat Exchanger extrusion molding mould described in the utility model, extending die life by arranging the collar, decreasing replacing number of times, improve continuous production, can obtain having higher wear resistance, high rigidity, product that dimensional accuracy is high.
Accompanying drawing explanation
Fig. 1 is the structural representation of the first external mold described in the utility model;
Fig. 2 is the structural representation of the second external mold described in the utility model;
Fig. 3 is the structural representation of core rod described in the utility model;
Wherein, 1, open top; 2, bottom opening; 3, columnar projections; 4, conus portion; 5, cylindrical portion; 6, inner chamber; 7, external screw thread.
Detailed description of the invention
Below in conjunction with embodiment and Figure of description, the utility model is described in detail, but is not limited thereto.
Embodiment 1
As Figure 1-3.
A kind of Tube Sheet of Heat Exchanger extrusion molding mould, comprises core rod and external mold; Described core rod comprises conus portion 4 and cylindrical portion 5; Described external mold comprises the first external mold and the second external mold that match with conus portion 4 and cylindrical portion 5 respectively; Described core rod is through to be arranged in external mold, and the cavity between core rod and external mold forms working cavities.Conus portion 4 avoids the pug backflow that causes because extrusion intermediate stress is excessive and extrudes the contraction distortion problem that pug produces due to unbalance stress, thus obtains the larger Tube Sheet of Heat Exchanger extrusion of dimensional accuracy.
Embodiment 2
Tube Sheet of Heat Exchanger extrusion molding mould as described in Example 1, its difference is, the cross section of described working cavities is annular; Described first external mold comprises open top 1 and bottom opening 2.
Embodiment 3
Tube Sheet of Heat Exchanger extrusion molding mould as described in Example 2, its difference is, the internal diameter of described open top 1 is 50mm, and bottom opening 2 internal diameter is 25mm, and the first external mold height is 40mm, and bottom opening 2 is highly 10mm, and the inner cavity taper of the first external mold is 40 °; Described second external mold internal diameter is 25mm, and length is 60mm.The outer end diameter of described conus portion 4 is 22mm, and the external diameter of described cylindrical portion 5 is 20mm, and the tapering of described conus portion 4 is 30 °.The tapering of conus portion 4 is less, and extrusion pressure is less, and extruded velocity is faster, and extruded product surface is more coarse, otherwise the tapering of conus portion 4 is larger, and extrusion pressure is large, and extruded velocity is slow, but product surface is smooth; The tapering of conus portion 4 is 30 ° and ensures rate of extrusion again while guarantee product surface is smooth.
Embodiment 4
Tube Sheet of Heat Exchanger extrusion molding mould as described in Example 1, its difference is, the end of described conus portion 4 is provided with columnar projections 3, and the outer wall of described columnar projections 3 is provided with external screw thread 7.External screw thread 7 realizes linking with extruder mould bases, plays fixation.
Embodiment 5
Tube Sheet of Heat Exchanger extrusion molding mould as described in Example 1, its difference is, the outer wall of described external mold is provided with 5 collars; The described collar is around the outer wall one week of external mold.The collar improves the anti-pressure ability of external mold, ensures again the portability of whole device simultaneously.
Claims (6)
1. a Tube Sheet of Heat Exchanger extrusion molding mould, is characterized in that, comprises core rod and external mold; Described core rod comprises conus portion and cylindrical portion; Described external mold comprises the first external mold and the second external mold that match with conus portion and cylindrical portion respectively; Described core rod is through to be arranged in external mold, and the cavity between core rod and external mold forms working cavities.
2. Tube Sheet of Heat Exchanger extrusion molding mould according to claim 1, is characterized in that, the cross section of described working cavities is annular; Described first external mold comprises open top and bottom opening.
3. Tube Sheet of Heat Exchanger extrusion molding mould according to claim 2, is characterized in that, described open-topped internal diameter is 40-60mm, bottom opening internal diameter is 20-25mm, first external mold height is 30-50mm, and bottom opening height is 4-14mm, and the inner cavity taper of the first external mold is 30-55 °; Described second external mold internal diameter is 20-25mm, and length is 50-75mm.
4. Tube Sheet of Heat Exchanger extrusion molding mould according to claim 1, is characterized in that, the outer end diameter of described conus portion is 20-22mm, and the external diameter of described cylindrical portion is 10-25mm, and the tapering of described conus portion is 20-35 °.
5. Tube Sheet of Heat Exchanger extrusion molding mould according to claim 1, is characterized in that, the end of described conus portion is provided with columnar projections, and the outer wall of described columnar projections is provided with external screw thread.
6. Tube Sheet of Heat Exchanger extrusion molding mould according to claim 1, is characterized in that, the outer wall of described external mold is provided with multiple collar; The described collar is around the outer wall one week of external mold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520872277.3U CN205086167U (en) | 2015-11-03 | 2015-11-03 | Heat exchanger tubes extrusion moulding mould |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520872277.3U CN205086167U (en) | 2015-11-03 | 2015-11-03 | Heat exchanger tubes extrusion moulding mould |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205086167U true CN205086167U (en) | 2016-03-16 |
Family
ID=55476885
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520872277.3U Active CN205086167U (en) | 2015-11-03 | 2015-11-03 | Heat exchanger tubes extrusion moulding mould |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205086167U (en) |
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2015
- 2015-11-03 CN CN201520872277.3U patent/CN205086167U/en active Active
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Legal Events
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |