CN204160702U - A kind of cavity structure being conducive to raising plastic tube surface smoothness - Google Patents
A kind of cavity structure being conducive to raising plastic tube surface smoothness Download PDFInfo
- Publication number
- CN204160702U CN204160702U CN201420540996.0U CN201420540996U CN204160702U CN 204160702 U CN204160702 U CN 204160702U CN 201420540996 U CN201420540996 U CN 201420540996U CN 204160702 U CN204160702 U CN 204160702U
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- China
- Prior art keywords
- shunting body
- rear end
- end cap
- bearing bracket
- core
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- Expired - Fee Related
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- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model discloses a kind of cavity structure being conducive to improving plastic tube surface smoothness, comprise drive end bearing bracket and rear end cap, drive end bearing bracket and rear end cap be axially provided with hole, mold core body is provided with in hole, mold core body and be provided with tube gap between drive end bearing bracket and rear end cap, mold core body comprises shunting body and core rod, shunting body support is also clamped with between drive end bearing bracket and rear end cap, shunting body support comprises outer shroud, inner core and the dowel being connected outer shroud and inner core, inner core be axially provided with limited impression or spacing preiection, shunting body is provided with projection or groove, and shunting body is semielliptical shape, tube gap is streamlined, also be provided with between shunting body support and rear end cap and there is flexible carrier base, described rear end cap and core rod are provided with multiple heating jacket.The utility model structure is simple, is conducive to the volume and the quality that alleviate plastic tube mould, and is beneficial to product surface fineness.
Description
Technical field
The utility model relates to pipe fitting mfg. moulding die field, particularly relates to a kind of cavity structure being conducive to improving plastic tube surface smoothness.
Background technology
Plastic pipe has that quality is light, intensity is high, corrosion-resistant, simple installation, construction costs are low and the advantage such as resistance to water-flow is little, has been widely used in municipal drainage, water system, building water supply and sewage and process stream transportation art.
In recent years along with China improves constantly the development with plastic extrusion machinery for the production of UPVC and the resin quality of other material tubing, China possesses the ability of competing with same kind of products at abroad completely.In prior art, UPVC tubing has the huge market demand, in prior art, the making of UPVC tubing realizes the Output pressure of molten resin by single screw extrusion machine, the resin of melting enters into plastic tube mould and realizes the shaping of tubing, and the theoretical research of UPVC tubing injection moulding and the product quality of determination to UPVC tubing of Design of Moulds play conclusive effect.
Utility model content
Play the problem of conclusive effect for the theoretical research of above-mentioned UPVC tubing injection moulding and the product quality of determination to UPVC tubing of Design of Moulds, the utility model provides a kind of cavity structure being conducive to improving plastic tube surface smoothness.
For solving the problem, a kind of cavity structure being conducive to improving plastic tube surface smoothness that the utility model provides solves problem by following technical essential: a kind of cavity structure being conducive to improving plastic tube surface smoothness, comprise the drive end bearing bracket and rear end cap that are fixedly connected with in the form of removably connecting, described drive end bearing bracket and rear end cap be axially provided with hole, mold core body is provided with in described hole, described mold core body and the tube gap be provided with between drive end bearing bracket and rear end cap for tube forming, described mold core body comprises shunting body and core rod, described shunting body is fixed on the end of core rod near tube gap entrance one end, and shunting body and core rod are releasable connection, shunting body support is also clamped with between described drive end bearing bracket and rear end cap, described shunting body support comprises outer shroud, inner core and the dowel being connected outer shroud and inner core, connect outer shroud and between inner core, form the passage being communicated with its both sides tube gap, inner core be axially provided with limited impression or spacing preiection, shunting body is provided with the projection or groove that coordinate with limited impression or spacing preiection, and shunting body is semielliptical shape, described tube gap is streamlined, also be provided with between described shunting body support and rear end cap and there is flexible carrier base, described carrier base comprises outer ring and inner ring, described outer ring is clamped between connection outer shroud and rear end cap, described inner ring is clamped between inner core and core rod, and described rear end cap and core rod are provided with multiple heating jacket separately on the wall of tube gap side.
Concrete, in the utility model, the drive end bearing bracket arranged is used for being connected so that the utility model accepts the plastic liquid of molten condition with plastic extruder, after drive end bearing bracket is connected with rear end cap, plastic liquid is entered by the front end of tube gap, stop through shunting body forms the outer wall of plastic tube to surrounding dispersion flows, completes the injection-moulding step of plastic tube.In prior art, the many employings of shunting body are coniform, in the utility model, shunting body is the shape setting of semielliptical, make plastic liquid through the tube gap required time of shunting body surrounding short and on the cross section of tube gap each point flow velocity comparatively even, the degree that such plastic liquid occurs to decompose in the process of shunting is low and by the uniform flow of each point on tube gap cross section in the unit interval, like this under the prerequisite reducing shunting body volume and weight, be conducive to the quality of the plastic tube of follow-up formation, the shunting body support arranged is for limiting the position in the hole axially arranged of shunting body at drive end bearing bracket and rear end cap: shunting body is fixed on core rod, in the process of core temperature change, because the shunting body be on core rod free end that expands with heat and contract with cold of core rod will inevitably produce displacement, and by arrange shunting body and inner core on intermeshing groove and projection, realize fixing relative to drive end bearing bracket or rear end cap position of shunting body, reach and stop shunting body to occur with the core rod situation of change in location in above described holes of expanding with heat and contract with cold, be convenient to like this keep shunting body to be positioned at the central authorities in described hole all the time, reach the object of the happy and harmonious plastics of uniform distribution, be beneficial to product quality of the present utility model, what arrange has flexible carrier base for by being out of shape the stress carrying out absorption portion and expand with heat and contract with cold from core rod, reduces object stressed on dowel, be beneficial to the life-span of the present utility model to reach, the heating jacket arranged is used for heating outside in the tubing of tube gap internal shaping, so that the maintenance of outside plastics molten condition when the demoulding in tubing, further make the temperature in outside in tubing consistent by heating jacket, to reduce the size of the shear stress of rear end cap and core rod in tubing and the utility model in knockout course, be convenient to the demoulding, promote demoulding quality, ensure the stability of the utility model pipe fitting quality of item.
Further technical scheme is:
For ease of described core rod and shunting body connection be separated, be beneficial to operating efficiency of the present utility model, described core rod is also fixed with the connecting screw rod of axis axis collinear with it near one end of tube gap arrival end, described connecting screw rod and shunting body are threaded and realize shunting body and be fixedly connected with core rod.Further, resist for strengthening screw thread on connecting screw rod the ability that alternate load produces plastic deformation, reach the object extending connecting screw rod service life, described connecting screw rod is high temperature bolt, further, and the threaded rod of described high temperature bolt to be material be 35CrMo.
For the distribution of plastic liquid in even tube gap, described dowel is multiple, and each dowel is uniform in the form of a ring each other.
For the uniformity of further uniform plastic's fluid fluid flowing on tube gap cross section after dowel, the side of described dowel is streamlined arcwall face.
For ease of the connection of the utility model and front end extruder, described drive end bearing bracket is also provided with the adapter sleeve around the distribution of tube gap entrance, described adapter sleeve is be arranged on the internal thread hole on tube gap entrance inwall or the external screw thread ring-type outside tube gap entrance is protruded.Further, preferred described adapter sleeve is gas thread hole.
After completing for ease of injection moulding, drive end bearing bracket is separated with plastics in tube gap with shunting body, and for injection moulding is ready next time, described drive end bearing bracket and shunting body are also provided with multiple heating jacket separately on a side wall surface of tube gap.
The utility model has following beneficial effect:
1, in prior art, the many employings of shunting body are coniform, in the utility model, shunting body is the shape setting of semielliptical, make plastic liquid through the tube gap required time of shunting body surrounding short and on the cross section of tube gap each point flow velocity comparatively even, the degree that such plastic liquid occurs to decompose in the process of shunting is low and by the uniform flow of each point on tube gap cross section in the unit interval, like this under the prerequisite reducing shunting body volume and weight, be conducive to the quality of the plastic tube of follow-up formation.
2, the shunting body support arranged is for limiting the position in the hole axially arranged of shunting body at drive end bearing bracket and rear end cap: shunting body is fixed on core rod, in the process of core temperature change, because the shunting body be on core rod free end that expands with heat and contract with cold of core rod will inevitably produce displacement, and by arrange shunting body and inner core on intermeshing groove and projection, realize fixing relative to drive end bearing bracket or rear end cap position of shunting body, reach and stop shunting body to occur with the core rod situation of change in location in above described holes of expanding with heat and contract with cold, be convenient to like this keep shunting body to be positioned at the central authorities in described hole all the time, reach the object of the happy and harmonious plastics of uniform distribution, be beneficial to product quality of the present utility model.
What 3, arrange has flexible carrier base for by being out of shape the stress carrying out absorption portion and expand with heat and contract with cold from core rod, reduces object stressed on dowel, be beneficial to the life-span of the present utility model to reach.
4, the heating jacket arranged is used for heating outside in the tubing of tube gap internal shaping, so that the maintenance of outside plastics molten condition when the demoulding in tubing, further make the temperature in outside in tubing consistent by heating jacket, to reduce the size of the shear stress of rear end cap and core rod in tubing and the utility model in knockout course, be convenient to the demoulding, promote demoulding quality, the i.e. fineness of tube surfaces, ensures the stability of the utility model pipe fitting quality of item.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation being conducive to the cavity structure specific embodiment improving plastic tube surface smoothness described in the utility model;
Fig. 2 is a kind of structural representation being conducive to the cavity structure shunting body support specific embodiment improving plastic tube surface smoothness described in the utility model.
Figure acceptance of the bid note is respectively: 1, drive end bearing bracket, and 2, shunting body support, 21, connect outer shroud, 22, dowel, 23, inner core, 3, carrier base, 4, rear end cap, 5, core rod, 6, connecting screw rod, 7, tube gap, 8, shunting body, 9, adapter sleeve, 10, heating jacket.
Detailed description of the invention
Below in conjunction with embodiment, the utility model is described in further detail, but structure of the present utility model is not limited only to following examples:
Embodiment 1:
As depicted in figs. 1 and 2, a kind of cavity structure being conducive to raising plastic tube surface smoothness, comprise the drive end bearing bracket 1 and rear end cap 4 that are fixedly connected with in the form of removably connecting, described drive end bearing bracket 1 and rear end cap 4 be axially provided with hole, mold core body is provided with in described hole, described mold core body and the tube gap 7 be provided with between drive end bearing bracket 1 and rear end cap 4 for tube forming, described mold core body comprises shunting body 8 and core rod 5, described shunting body 8 is fixed on the end of core rod 5 near tube gap 7 entrance one end, and shunting body 8 and core rod 5 are releasable connection, shunting body support 2 is also clamped with between described drive end bearing bracket 1 and rear end cap 4, described shunting body support 2 comprises outer shroud 21, inner core 23 and the dowel 22 being connected outer shroud 21 and inner core 23, connect outer shroud 21 and form with between inner core 23 passage being communicated with its both sides tube gap 7, inner core 23 be axially provided with limited impression or spacing preiection, shunting body 8 is provided with the projection or groove that coordinate with limited impression or spacing preiection, and shunting body 8 is in semielliptical shape, described tube gap 7 is streamlined, also be provided with between described shunting body support 2 and rear end cap 4 and there is flexible carrier base 3, described carrier base 3 comprises outer ring and inner ring, described outer ring is clamped between connection outer shroud 21 and rear end cap 4, described inner ring is clamped between inner core 23 and core rod 5, and described rear end cap 4 and core rod 5 are provided with multiple heating jacket 10 separately on the wall of tube gap 7 side.
In the present embodiment, the drive end bearing bracket 1 arranged is fixedly connected with by multiple connecting bolt uniform in the form of a ring each other with rear end cap 4, for even the utility model product quality and manufacture of the present utility model, the surface roughness of described tube gap 7 is Ra0.4, described shunting body 8, shunting body support 2, core rod 5 is stainless steel, the material of described carrier base 3 is Merlon, heating jacket 10 is the resistance wire of connecting with thermocouple, resistance wire work whether control is realized by the temperature sense of thermocouple to rear end cap 4 and core rod 5, the temperature realizing rear end cap 4 and core rod 5 fluctuates in the scope that setting value is less.
Embodiment 2:
The present embodiment is further qualified on the basis of embodiment 1, as depicted in figs. 1 and 2, for ease of described core rod 5 and shunting body 8 connection be separated, be beneficial to operating efficiency of the present utility model, described core rod 5 is also fixed with the connecting screw rod 6 of axis axis collinear with it near one end of tube gap 7 arrival end, described connecting screw rod 6 and shunting body 8 are threaded and realize shunting body 8 and be fixedly connected with core rod 5.Further, resist for strengthening screw thread on connecting screw rod 6 ability that alternate load produces plastic deformation, reach the object extending connecting screw rod 6 service life, described connecting screw rod 6 is high temperature bolt, in the present embodiment, the threaded rod of described high temperature bolt to be material be 35CrMo.
Embodiment 3:
The present embodiment is further qualified on the basis of embodiment 1, and as depicted in figs. 1 and 2, be the distribution of plastic liquid in even tube gap 7, described dowel 22 is multiple, and each dowel 22 is uniform in the form of a ring each other.
For the uniformity of further uniform plastic's fluid fluid flowing on tube gap 7 cross section after dowel 22, the side of described dowel 22 is streamlined arcwall face.
Embodiment 4:
The present embodiment is further qualified on the basis of above embodiment, as depicted in figs. 1 and 2, for ease of the connection of the utility model and front end extruder, described drive end bearing bracket 1 is also provided with the adapter sleeve 9 around the distribution of tube gap 7 entrance, described adapter sleeve 9 is for being arranged on the internal thread hole on tube gap 7 entrance inwall or the protrusion of the external screw thread ring-type outside tube gap 7 entrance.In the present embodiment, can effect for ease of the secret of manufacture of the present utility model and the utility model and headend equipment, preferred described adapter sleeve 9 is gas thread hole.
After completing for ease of injection moulding, drive end bearing bracket 1 is separated with plastics in tube gap 7 with shunting body 8, and for injection moulding is ready next time, described drive end bearing bracket 1 and shunting body 8 are also provided with multiple heating jacket 10 separately on a side wall surface of tube gap 7.
Above content is the further description done the utility model in conjunction with concrete preferred embodiment, can not assert that detailed description of the invention of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field, not departing from other embodiments drawn under the technical solution of the utility model, all should be included in protection domain of the present utility model.
Claims (6)
1. one kind is conducive to the cavity structure improving plastic tube surface smoothness, comprise the drive end bearing bracket (1) and rear end cap (4) that are fixedly connected with in the form of removably connecting, described drive end bearing bracket (1) and rear end cap (4) be axially provided with hole, mold core body is provided with in described hole, described mold core body and the tube gap (7) be provided with between drive end bearing bracket (1) and rear end cap (4) for tube forming, it is characterized in that, described mold core body comprises shunting body (8) and core rod (5), described shunting body (8) is fixed on the end of core rod (5) near tube gap (7) entrance one end, and shunting body (8) and core rod (5) are releasable connection, shunting body support (2) is also clamped with between described drive end bearing bracket (1) and rear end cap (4), described shunting body support (2) comprises outer shroud (21), inner core (23) and the dowel (22) being connected outer shroud (21) and inner core (23), connect outer shroud (21) and form with between inner core (23) passage being communicated with its both sides tube gap (7), inner core (23) be axially provided with limited impression or spacing preiection, shunting body (8) is provided with the projection coordinated with limited impression or spacing preiection or groove, and shunting body (8) is in semielliptical shape, described tube gap (7) is for streamlined, also be provided with between described shunting body support (2) and rear end cap (4) and there is flexible carrier base (3), described carrier base (3) comprises outer ring and inner ring, described outer ring is clamped between connection outer shroud (21) and rear end cap (4), described inner ring is clamped between inner core (23) and core rod (5), and described rear end cap (4) and core rod (5) are provided with multiple heating jacket (10) separately on the wall of tube gap (7) side.
2. a kind of cavity structure being conducive to raising plastic tube surface smoothness according to claim 1, it is characterized in that, described core rod (5) is also fixed with the connecting screw rod (6) of axis axis collinear with it near one end of tube gap (7) arrival end, described connecting screw rod (6) and shunting body (8) are threaded and realize shunting body (8) and be fixedly connected with core rod (5).
3. a kind of cavity structure being conducive to raising plastic tube surface smoothness according to claim 1, it is characterized in that, described dowel (22) is for multiple, and each dowel (22) is uniform in the form of a ring each other.
4. a kind of cavity structure being conducive to raising plastic tube surface smoothness according to claim 1, it is characterized in that, the side of described dowel (22) is streamlined arcwall face.
5. according to a kind of cavity structure being conducive to raising plastic tube surface smoothness in Claims 1-4 described in any one, it is characterized in that, described drive end bearing bracket (1) is also provided with the adapter sleeve (9) around the distribution of tube gap (7) entrance, described adapter sleeve (9) is for being arranged on the internal thread hole on tube gap (7) entrance inwall or the protrusion of the external screw thread ring-type outside tube gap (7) entrance.
6. according to a kind of cavity structure being conducive to raising plastic tube surface smoothness in Claims 1-4 described in any one, it is characterized in that, described drive end bearing bracket (1) and shunting body (8) are also provided with multiple heating jacket (10) separately on a side wall surface of tube gap (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420540996.0U CN204160702U (en) | 2014-09-21 | 2014-09-21 | A kind of cavity structure being conducive to raising plastic tube surface smoothness |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420540996.0U CN204160702U (en) | 2014-09-21 | 2014-09-21 | A kind of cavity structure being conducive to raising plastic tube surface smoothness |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204160702U true CN204160702U (en) | 2015-02-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420540996.0U Expired - Fee Related CN204160702U (en) | 2014-09-21 | 2014-09-21 | A kind of cavity structure being conducive to raising plastic tube surface smoothness |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204160702U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104290276A (en) * | 2014-09-21 | 2015-01-21 | 成都众山科技有限公司 | Mold beneficial to improving surface smoothness of plastic pipe |
-
2014
- 2014-09-21 CN CN201420540996.0U patent/CN204160702U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104290276A (en) * | 2014-09-21 | 2015-01-21 | 成都众山科技有限公司 | Mold beneficial to improving surface smoothness of plastic pipe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150218 Termination date: 20150921 |
|
| EXPY | Termination of patent right or utility model |