CN214820744U - Combined core rod capable of being replaced quickly in pipe die - Google Patents
Combined core rod capable of being replaced quickly in pipe die Download PDFInfo
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- CN214820744U CN214820744U CN202022693575.XU CN202022693575U CN214820744U CN 214820744 U CN214820744 U CN 214820744U CN 202022693575 U CN202022693575 U CN 202022693575U CN 214820744 U CN214820744 U CN 214820744U
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- mandrel
- annular groove
- sealing sleeve
- head
- end portion
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Abstract
The utility model discloses a combined core rod capable of being replaced quickly in a pipe mould, relating to the technical field of pipe extrusion; the mandrel head comprises a mandrel main body positioned in a die and a mandrel head determining the wall thickness of a pipe; the mandrel is characterized in that an internal thread groove is formed in the end portion of the mandrel main body, an external thread connector used for being matched with the internal thread groove is arranged at the end portion of the mandrel head, an annular groove is formed in the outer side of the end portion of the mandrel main body, a sealing sleeve matched with the annular groove is fixedly connected to the end portion of the mandrel head, the sealing sleeve is sleeved on the annular groove, the sealing sleeve is in interference fit with the annular groove, a chamfer convenient for guiding the sealing sleeve into the annular groove is formed in one side, close to the mandrel head, of the annular groove, and a gap is formed between one side, far away from the mandrel head, of the annular groove and the sealing sleeve. The utility model provides a but quick replacement's combination formula plug among tubular product mould, when changing product series, as long as change the mandrel head just, labour saving and time saving.
Description
Technical Field
The utility model belongs to the technical field of tubular product is extruded, in particular to but quick replacement's combination formula plug in tubular product mould.
Background
The polypropylene pipe die comprises the neck ring die and the core rod, and when the polypropylene pipe is used for replacing a product series (the outer diameter is not changed, only the wall thickness is changed), the neck ring die and the core rod need to be detached together, so that the production time and the productivity are wasted.
Chinese patent application No.: CN201320253001.8, patent name: a plastic pipe mold comprises: the plastic pipe die comprises a die holder and a die, wherein the die holder and the die are connected with each other, a material cavity is arranged in the die holder, a core rod is arranged in the material cavity, a cone for shunting is formed at one end, located in the die holder, of the core rod, a feed inlet corresponding to the top end of the cone is formed in the die holder, two blind holes for water circulation are formed in the core rod, and the end parts of the blind holes are communicated; and a plurality of electromagnetic heating devices and a detection device for detecting the temperature of the neck ring mold are arranged on the outer side of the neck ring mold. The utility model discloses plastic tubing mould can heat the plug to required temperature in short time, has shortened start time greatly, simultaneously, can accurately maintain the temperature of plug in the certain limit, guarantees the stationarity that the inside plastics melten gel of extrusion die flows, and the plastic tubing embryo that makes the manufacturing and obtain is smooth through internal surface behind the sizing, and mechanical properties is good, and water resistance is little. Although this prior art has many advantages, it still requires the die and the core rod to be replaced at the same time when changing the product specification, which is time-consuming and labor-consuming.
Disclosure of Invention
The utility model aims at overcoming the above-mentioned shortcoming of prior art, but provide a but quick replacement's combination formula plug in tubular product mould, when changing product series, as long as change the mandrel head just, labour saving and time saving.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a combined core rod capable of being replaced quickly in a pipe mold comprises a core rod main body and a core rod head, wherein the core rod main body is positioned in a port mold; the mandrel is characterized in that an internal thread groove is formed in the end portion of the mandrel main body, an external thread connector used for being matched with the internal thread groove is arranged at the end portion of the mandrel head, an annular groove is formed in the outer side of the end portion of the mandrel main body, a sealing sleeve matched with the annular groove is fixedly connected to the end portion of the mandrel head, the sealing sleeve is sleeved on the annular groove, the sealing sleeve is in interference fit with the annular groove, a chamfer convenient for guiding the sealing sleeve into the annular groove is formed in one side, close to the mandrel head, of the annular groove, and a gap is formed between one side, far away from the mandrel head, of the annular groove and the sealing sleeve.
Preferably, the outer diameter of the end of the mandrel body near the mandrel head is equal to the outer diameter of the gland.
Preferably, the annular groove is sleeved with a sealing ring, and the sealing ring is positioned between the side wall of the annular groove and the sealing sleeve.
Preferably, heat dissipation channels are provided in the mandrel main body and the mandrel head.
Preferably, the external thread connector, the sealing sleeve and the mandrel head are of an integrally formed structure.
Preferably, the mandrel main body is of an integrally molded structure.
Preferably, the core rod main body is provided with a conical surface for material distribution.
The utility model has the advantages that: the utility model provides a but quick replacement's combination formula plug among tubular product mould, when changing product series, as long as change the mandrel head just, labour saving and time saving.
Drawings
FIG. 1 is a schematic view of the present invention;
FIG. 2 is an enlarged view of FIG. 1 at A;
figure 3 is a schematic view of the hardening of the material in the gap between the sealing sleeve and the annular groove.
In the figure: the core rod comprises a core rod main body 1, a core rod head 2, an internal thread groove 3, an external thread connector 4, an annular groove 5, a sealing sleeve 6, a chamfer 7, a sealing ring 8, a conical surface 9 and a material 10.
Detailed Description
The invention will be further explained in detail with reference to the drawings and the following detailed description:
example (b):
referring to fig. 1 to 3, a combined core rod capable of being replaced quickly in a pipe mold comprises a core rod main body 1 positioned in a die, and a core rod head 2 determining the wall thickness of a pipe;
the mandrel is characterized in that an inner thread groove 3 is formed in the end portion of the mandrel main body 1, an outer thread connector 4 used for being matched with the inner thread groove 3 is arranged at the end portion of the mandrel head 2, an annular groove 5 is formed in the outer side of the end portion of the mandrel main body 1, a sealing sleeve 6 matched with the annular groove 5 is fixedly connected to the end portion of the mandrel head 2, the sealing sleeve 6 is sleeved on the annular groove 5, the sealing sleeve 6 is in interference fit with the annular groove 5, a chamfer 7 convenient for guiding the sealing sleeve 6 into the annular groove 5 is formed in one side, close to the mandrel head 2, of the annular groove 5, and a gap is formed between one side, far away from the mandrel head 2, of the annular groove 5 and the sealing sleeve 6.
The outer diameter of one end of the mandrel main body 1 close to the mandrel head 2 is equal to that of the sealing sleeve 6.
The annular groove 5 is sleeved with a sealing ring 8, and the sealing ring 8 is positioned between the side wall of the annular groove 5 and the sealing sleeve 6.
The core rod main body 1 and the core rod head 2 are internally provided with heat dissipation channels.
The external thread connector 4, the sealing sleeve 6 and the mandrel head 2 are of an integrated structure. The mandrel main body 1 is an integrally formed structure.
The core rod main body 1 is provided with a conical surface 9 for material shunting.
Principle of embodiment:
when the wall thickness of the product needs to be replaced, only the mandrel head with the corresponding outer diameter needs to be replaced.
When extruding, the outer sides of the mandrel head and the mandrel main body 1 are filled with materials, the materials are blocked by the sealing ring 8 and cannot enter a gap between the sealing sleeve 6 and the annular groove 5, and when the mandrel head is replaced, the hardened materials cannot influence the reliability of threaded connection.
If part of the material flows into the gap between the sealing sleeve 6 and the annular groove 5 after passing through the sealing ring 8, referring to fig. 3, at this time, when the mandrel head is replaced, the sealing sleeve 6 slides along the annular groove 5 after passing through the chamfer 7 along with the progress of the threaded connection, and as the sealing sleeve 6 and the annular groove 5 are in interference fit, the hardened material 10 can be hung down from the annular groove 5, so that the effectiveness of the threaded connection cannot be influenced. (in conventional threaded connections, material tends to flow to the threads and harden, affecting the threaded connection).
Claims (7)
1. A combined core rod capable of being replaced quickly in a pipe mold is characterized by comprising a core rod main body and a core rod head, wherein the core rod main body is positioned in a port mold;
the mandrel is characterized in that an internal thread groove is formed in the end portion of the mandrel main body, an external thread connector used for being matched with the internal thread groove is arranged at the end portion of the mandrel head, an annular groove is formed in the outer side of the end portion of the mandrel main body, a sealing sleeve matched with the annular groove is fixedly connected to the end portion of the mandrel head, the sealing sleeve is sleeved on the annular groove, the sealing sleeve is in interference fit with the annular groove, a chamfer convenient for guiding the sealing sleeve into the annular groove is formed in one side, close to the mandrel head, of the annular groove, and a gap is formed between one side, far away from the mandrel head, of the annular groove and the sealing sleeve.
2. The modular mandrel for rapid replacement in a tubular product mold as claimed in claim 1, wherein the outer diameter of the end of the mandrel body near the mandrel head is equal to the outer diameter of the sealing sleeve.
3. The quick-change combined mandrel for pipe molds as claimed in claim 1, wherein the annular groove is sleeved with a sealing ring, and the sealing ring is located between the side wall of the annular groove and the sealing sleeve.
4. The modular mandrel for rapid replacement in a tubular product mold as claimed in claim 1, wherein heat dissipation channels are provided in the mandrel body and the mandrel head.
5. The rapidly replaceable combined mandrel for pipe molds as claimed in claim 1, wherein the male connector, the sealing sleeve and the mandrel head are integrally formed.
6. The modular mandrel for rapid replacement in a tubular product mold as claimed in claim 1, wherein the mandrel body is an integrally formed structure.
7. The rapidly replaceable combined mandrel for pipe dies of claim 1 wherein the body of the mandrel has a tapered surface for diverting material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022693575.XU CN214820744U (en) | 2020-11-19 | 2020-11-19 | Combined core rod capable of being replaced quickly in pipe die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022693575.XU CN214820744U (en) | 2020-11-19 | 2020-11-19 | Combined core rod capable of being replaced quickly in pipe die |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214820744U true CN214820744U (en) | 2021-11-23 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022693575.XU Active CN214820744U (en) | 2020-11-19 | 2020-11-19 | Combined core rod capable of being replaced quickly in pipe die |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214820744U (en) |
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2020
- 2020-11-19 CN CN202022693575.XU patent/CN214820744U/en active Active
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