CN104260317A - Novel mold structure for preventing materials from stacking at mold opening - Google Patents
Novel mold structure for preventing materials from stacking at mold opening Download PDFInfo
- Publication number
- CN104260317A CN104260317A CN201410508274.1A CN201410508274A CN104260317A CN 104260317 A CN104260317 A CN 104260317A CN 201410508274 A CN201410508274 A CN 201410508274A CN 104260317 A CN104260317 A CN 104260317A
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- Prior art keywords
- die sleeve
- mold
- mould
- sleeve
- core rod
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/15—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor incorporating preformed parts or layers, e.g. extrusion moulding around inserts
- B29C48/154—Coating solid articles, i.e. non-hollow articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/30—Extrusion nozzles or dies
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/30—Extrusion nozzles or dies
- B29C48/302—Extrusion nozzles or dies being adjustable, i.e. having adjustable exit sections
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a novel mold structure for preventing materials from stacking at a mold opening. The novel mold structure comprises a mold core and a mold sleeve, wherein the mold sleeve is fixed on a machine head by virtue of a mold sleeve cover, and the extrusion concentricity is adjusted by virtue of a mold sleeve alignment screw; the mold core is fixed on a mold core seat, and the relative position between the mold core and the mold sleeve is adjusted by virtue of a mold core seat bolt; the mold sleeve comprises a mold forming area, a mold sleeve opening chamfer, a mold sleeve tapered area, a mold sleeve step area and a mold deformation area; the mold sleeve tapered area and the mold sleeve step area are arranged on the outer side of the mold sleeve respectively; the tapered mold deformation area is arranged on the inner side of the mold sleeve; the mold sleeve tapered area is connected with the mold forming area in a circular arc transition manner by virtue of the mold sleeve opening chamfer. By virtue of the design of layering and tapering the front section of the mold sleeve, the problem of separation of the materials at the mold opening in the extrusion process in the current cable industry is well solved, the problems that the surface of a cable is poor and unqualified products and waste products are produced due to material separation are solved, the quality of products is guaranteed, the production efficiency is improved, and the cost is reduced.
Description
Technical field
The present invention relates to extruding machine expressing technique in electric wire manufacture field, be specifically related to a kind of mould for plastic extruding forming.
Background technology
It is critical process in cable industry that electric wire extrudes operation, and in extrusion operation, mould is crucial technology.Extrusion die structure of the prior art, see shown in Figure of description 3, comprises head 21, tuningout screw 22, core rod seat 23, core rod 24, die sleeve 25, die sleeve outside vertical district 26, die sleeve lid 27 and core rod seat bolt 28, wherein core rod 24, die sleeve 25 are extrusion moulding moulds.Core rod 24 is fixed on core rod seat 23, and effect is fixing and supports core or cable core, makes plastics circlewise, and enters die sleeve in certain direction, by adjustment core rod seat bolt 28 to adjust the relative position of core rod die sleeve.Die sleeve 25 is fixed on head by means of die sleeve lid 27, the adjustment of extruding concentricity is carried out by die sleeve tuningout screw 22, the effect of die sleeve is that the gap that plastics are formed by its internal taper hole and the Outer Taper of core rod enters duct, will insulate, sheath material (as crosslinked polyethylene, low-smoke halogen-free polyolefin, polyvinyl chloride etc.) is coated on core uniformly.Core material when extruding through extruding due to Pressure Drop to zero after mould, elasticity of plastics reply and swell, after mould elasticity of plastics reply mould mouth adhere to, pile up cause precipitation.Existing die sleeve front end is concordant shape, and extrusion die all exists mould gate material and separates out when extruding.
If adopt in production and squeeze the tubular type mode of production, die sleeve mouth is separated out can be less than normal; If but when using squash type grinding tool to produce, separate out serious, produce material for a long time at mould and be piled into bulk in the precipitation of mould mouth, core surface can be sticked to along with core is extruded, cannot be separated, cause cable surface to have bulge, cause defective work to occur.If it is excessive to pile up block, core is through wire-crossing wheel, and cable-through hole, gas hole blocks, and causes core to be broken, causes waste product.Separate out material and be also not easy cleaning at mould mouth, during cleaning, easily damage core surface.This kind of phenomenon ubiquity in cable industry, has had a strong impact on the quality of cable, production efficiency.Secondly die sleeve leading portion is concordant shape, cannot stretch out head leading portion and fix die sleeve nut, and core rod and die sleeve conveniently can not check the distance between core rod and die sleeve after installing, observe the degree of eccentricity between core rod and die sleeve.
In cable industry, major part is all improve in material, but is solved thoroughly for the mode of production of plsitive mold always.
Summary of the invention
Goal of the invention: the object of the invention is to solve deficiency of the prior art, provides a kind of and novel extrudes grinding tool, solve the precipitation of mould gate material, the cleaning of mould mouth is convenient and simple, convenient during installation, ensure that cable quality, improve production efficiency, reduce costs.
Technical scheme: a kind of novel mould structure preventing mould gate material from piling up of the present invention, comprise core rod and die sleeve, described die sleeve is fixed on head by means of die sleeve lid, and carry out the adjustment of extruding concentricity by die sleeve tuningout screw, described core rod is fixed on core rod seat, and the relative position of core rod and die sleeve is adjusted by core rod seat bolt, described die sleeve comprises mould molding district, die sleeve mouth chamfering, die sleeve tapered zone, die sleeve stepped region and die deformation district, described mould molding district is located at the front top port of die sleeve, described die sleeve tapered zone and die sleeve stepped region are located at outside die sleeve respectively, it is the die deformation district of taper inside die sleeve, described die sleeve tapered zone is connected by the transition of die sleeve mouth chamfering circular arc with mould molding district.
As optimization, the length in described mould molding district chooses different numerical value according to extruding varying in size of the outside diameter of cable, reducing the length of shaping area as far as possible, ensureing material when extruding because elastic recovery release can be discharged in time, to ensure the quality extruding surface.Inner surface polishing, arc transition is carried out in shaping area and junction, deformed area, ensures that material can be entered shaping area smoothly.
As preferably, the chamfer angle of described die sleeve mouth chamfering is 45 °, and arc transition, termination, core rod shaping area is connected with die sleeve mouth leading portion outer surface tapering.Core material when extruding through extruding due to Pressure Drop to zero after mould, elasticity of plastics is replied and swells, and can not adhere to, precipitation material is reduced after mould with mould mouth, precipitation material disengaging grinding tool mouth leading portion.
As preferably, the angle of taper of described die sleeve tapered zone is that between 30 ° ~ 50 °, length is relevant to mould size of population, can adjust according to actual.Can not contact wire wicking surface when clearing up and piling up material, the quality of effective cable when ensureing Hand scarf mould mouth.If adopt plsitive mold to extrude in production process; extrusion pressure is excessive; precipitation problem is serious; the contact surface of separating out material and die sleeve mouth reduces, and separates out material and seldom sticks to mould mouth, even if precipitation material can not be followed in time extrude cable surface disengaging; material can be passed along with the tapering of mould mouth after precipitation backward; can not directly touch core surface when clearing up like this, cleaning is convenient, ensure that large length core does not shut down production.
As preferably, the numbers of steps of described die sleeve stepped region is 2 ~ 3 layers, die sleeve mouth is designed to step makes die sleeve can stretch out die sleeve confinement nut leading portion, die sleeve leading portion is allowed to stretch out head leading portion convenience and the state of observing in time when mould is extruded and surface quality completely, can be convenient and swift when clearing up mould mouth.Core rod and die sleeve conveniently check the distance between core rod and die sleeve after installing, observe the degree of eccentricity between core rod and die sleeve, enhance productivity.
As preferably, the wall thickness of described mould mouth is 0.5 ~ 1.0mm.
Beneficial effect: the present invention has following beneficial effect:
The present invention is by die sleeve leading portion point stratum, the design becoming tapering, well solve the precipitation problem extruding process mould gate material in current cable industry, solve because material is separated out that the cable surface caused is bad, the appearance of defective work, waste product, ensure that the quality of product, improve production efficiency, reduce cost;
If adopt plsitive mold to extrude in production process, extrusion pressure is excessive, precipitation problem is serious, the contact surface of separating out material and die sleeve mouth reduces, and reduce and separate out material adhesion at die sleeve mouth, material can be passed along with the tapering of mould mouth after precipitation backward, core surface can not be directly touched like this when clearing up, cleaning is convenient, solves and touches cable surface when clearing up, and ensure that large length, does not shut down at a high speed the production advantage of production;
Step die sleeve mouth can stretch out die sleeve and confine nut leading portion, allows die sleeve leading portion stretch out the convenient state with observing in time when mould is extruded of head leading portion and surface quality completely, can be convenient and swift when cleaning mould mouth.Core rod and die sleeve conveniently check the distance between core rod and die sleeve after installing, observe the degree of eccentricity between core rod and die sleeve, enhance productivity.
Accompanying drawing explanation
Fig. 1 is mounting structure schematic diagram of the present invention.
Fig. 2 is die sleeve structure enlarged diagram of the present invention.
Fig. 3 is mould structure schematic diagram of the prior art.
Detailed description of the invention
A kind of novel mould structure preventing mould gate material from piling up as depicted in figs. 1 and 2, comprise core rod 6 and die sleeve, die sleeve is fixed on head 9 by means of die sleeve lid 10, and carry out the adjustment of extruding concentricity by die sleeve tuningout screw 8, core rod 6 is fixed on core rod seat 7, and the relative position of core rod 6 and die sleeve is adjusted by core rod seat bolt 11, die sleeve comprises mould molding district 1, die sleeve mouth chamfering 2, die sleeve tapered zone 3, die sleeve stepped region 4 and die deformation district 5, mould molding district 1 is located at the front top port of die sleeve, die sleeve tapered zone 3 and die sleeve stepped region 4 are located at outside die sleeve respectively, it is the die deformation district 5 of taper inside die sleeve, die sleeve tapered zone 3 is connected by die sleeve mouth chamfering 2 arc transition with mould molding district 1.
As the further optimization of technique scheme, the length in described mould molding district chooses different numerical value according to extruding varying in size of the outside diameter of cable, reduce the length of shaping area as far as possible, ensure material when extruding because elastic recovery release can be discharged in time, to ensure the quality extruding surface.Inner surface polishing, arc transition is carried out in shaping area and junction, deformed area, ensures that material can be entered shaping area smoothly.
As the further optimization of technique scheme, the chamfer angle of described die sleeve mouth chamfering is 45 °, and arc transition, termination, core rod shaping area is connected with die sleeve mouth leading portion outer surface tapering.Core material when extruding through extruding due to Pressure Drop to zero after mould, elasticity of plastics is replied and swells, and can not adhere to, precipitation material is reduced after mould with mould mouth, precipitation material disengaging grinding tool mouth leading portion.
As the further optimization of technique scheme, the angle of taper of described die sleeve tapered zone is that between 30 ° ~ 50 °, length is relevant to mould size of population, can adjust according to actual.Can not contact wire wicking surface when clearing up and piling up material, the quality of effective cable when ensureing Hand scarf mould mouth.If adopt plsitive mold to extrude in production process; extrusion pressure is excessive; precipitation problem is serious; the contact surface of separating out material and die sleeve mouth reduces, and separates out material and seldom sticks to mould mouth, even if precipitation material can not be followed in time extrude cable surface disengaging; material can be passed along with the tapering of mould mouth after precipitation backward; can not directly touch core surface when clearing up like this, cleaning is convenient, ensure that large length core does not shut down production.
As the further optimization of technique scheme, the numbers of steps of described die sleeve stepped region is 2 ~ 3 layers, die sleeve mouth is designed to step makes die sleeve can stretch out die sleeve confinement nut leading portion, die sleeve leading portion is allowed to stretch out head leading portion convenience and the state of observing in time when mould is extruded and surface quality completely, can be convenient and swift when clearing up mould mouth.Core rod and die sleeve conveniently check the distance between core rod and die sleeve after installing, observe the degree of eccentricity between core rod and die sleeve, enhance productivity.
Structure extruded by mould of the present invention and difference of the prior art is: the contact surface reducing extruded material and die sleeve mouth, mould mouth leading portion appearance is arranged to taper, mould mouth wall thickness control is between 0.5 ~ 1.0mm, die sleeve mouth is processed into step, numbers of steps is designed to 2 ~ 3 layers of step, and die sleeve mouth is designed to chamfered.
Core material when extruding through extruding due to Pressure Drop to zero after mould, elasticity of plastics is replied and swells, because mould mouth carries out chamfered, tubular molding tool is extruded plastic layer after mould at material and can not be adhered to mould mouth, solves the precipitation of mould gate material; Select plsitive mold, extrusion pressure is larger, material is larger from elastic recovery after mould, current die sleeve mouth leading portion is concordant shape, separates out material and departs from die sleeve mouth, and long-time start separates out material stacking at die sleeve mouth, can along with the core surface adhesion extruded, cannot be separated, cause cable surface to have bulge, cause defective work to occur.If it is excessive to pile up block, core is through wire-crossing wheel, and cable-through hole, gas hole blocks, and causes core to be broken, causes waste product.Can cable surface be encountered constantly at cleaning die sleeve mouth, also cause bad order or defective work to occur.Therefore mould mouth is designed to tapered, carries out chamfered, and elastic recovery can be discharged at die sleeve mouth timely.If pressure is excessive, the contact surface of separating out material and die sleeve mouth reduces, portion of material precipitation can be there is adhere at mould mouth, precipitation material die sleeve Surface Taper to die sleeve opening's edge in time and is passed backward under the effect of elastic-restoring force, directly cable surface can not be touched when clearing up, convenient during cleaning.Ensure that the quality of cable, reduce cable because of the precipitation of mould mouth, stick to cable surface maintenance after accumulation, improve production efficiency, reduce manufacturing cost.
Current die sleeve front end is concordant shape, cannot stretch out head leading portion and confine die sleeve nut, and core rod and die sleeve conveniently can not check the distance between core rod and die sleeve after installing, observe the degree of eccentricity between core rod and die sleeve.Die sleeve leading portion adopt step, such die sleeve just can stretch out head front end confine nut, core rod and die sleeve directly can see after installing between distance, concentricity, and clear up die sleeve be convenient operation, enhance productivity.
The present invention is by die sleeve leading portion point stratum, the design becoming tapering, well solve the precipitation problem extruding process mould gate material in current cable industry, solve because material is separated out that the cable surface caused is bad, the appearance of defective work, waste product, ensure that the quality of product, improve production efficiency, reduce cost.
If adopt plsitive mold to extrude in production process; extrusion pressure is excessive; precipitation problem is serious; the contact surface of separating out material and die sleeve mouth reduces, and reduce and separate out material adhesion at die sleeve mouth, material can be passed along with the tapering of mould mouth after precipitation backward; core surface can not be directly touched like this when clearing up; cleaning is convenient, solves and touches cable surface when clearing up, and ensure that large length, does not shut down at a high speed the production advantage of production.
Step die sleeve mouth can stretch out die sleeve and confine nut leading portion, allows die sleeve leading portion stretch out the convenient state with observing in time when mould is extruded of head leading portion and surface quality completely, can be convenient and swift when cleaning mould mouth.Core rod and die sleeve conveniently check the distance between core rod and die sleeve after installing, observe the degree of eccentricity between core rod and die sleeve, enhance productivity.
Claims (6)
1. the novel mould structure preventing mould gate material from piling up, comprise core rod (6) and die sleeve, described die sleeve is fixed on head (9) by means of die sleeve lid (10), and carry out the adjustment of extruding concentricity by die sleeve tuningout screw (8), described core rod (6) is fixed on core rod seat (7), and by the relative position of core rod seat bolt (11) adjustment core rod (6) with die sleeve, it is characterized in that: described die sleeve comprises mould molding district (1), die sleeve mouth chamfering (2), die sleeve tapered zone (3), die sleeve stepped region (4) and die deformation district (5), described mould molding district (1) is located at the front top port of die sleeve, described die sleeve tapered zone (3) and die sleeve stepped region (4) are located at outside die sleeve respectively, it is the die deformation district (5) of taper inside die sleeve, described die sleeve tapered zone (3) is connected by die sleeve mouth chamfering (2) arc transition with mould molding district (1).
2. a kind of novel mould structure preventing mould gate material from piling up according to claim 1, is characterized in that: the length of described mould molding district (1) chooses different numerical value according to extruding varying in size of the outside diameter of cable.
3. a kind of novel mould structure preventing mould gate material from piling up according to claim 1, is characterized in that: the chamfer angle of described die sleeve mouth chamfering (2) is 45 °.
4. a kind of novel mould structure preventing mould gate material from piling up according to claim 1, is characterized in that: the angle of taper of described die sleeve tapered zone (3) is between 30 ° ~ 50 °.
5. a kind of novel mould structure preventing mould gate material from piling up according to claim 1, is characterized in that: the numbers of steps of described die sleeve stepped region (4) is 2 ~ 3 layers.
6. a kind of novel mould structure preventing mould gate material from piling up according to claim 1, is characterized in that: the wall thickness of described mould mouth is 0.5 ~ 1.0mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410508274.1A CN104260317A (en) | 2014-09-29 | 2014-09-29 | Novel mold structure for preventing materials from stacking at mold opening |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410508274.1A CN104260317A (en) | 2014-09-29 | 2014-09-29 | Novel mold structure for preventing materials from stacking at mold opening |
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| CN104260317A true CN104260317A (en) | 2015-01-07 |
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| CN201410508274.1A Pending CN104260317A (en) | 2014-09-29 | 2014-09-29 | Novel mold structure for preventing materials from stacking at mold opening |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107036571A (en) * | 2016-12-27 | 2017-08-11 | 江苏吴通连接器有限公司 | Exempt from the automatic correction system of tune head on a kind of full automatic cable production line |
| CN109130137A (en) * | 2018-10-25 | 2019-01-04 | 陈丽璇 | A kind of tube single screw extrusion device that can reduce adverse current |
| CN109333956A (en) * | 2018-11-27 | 2019-02-15 | 金华永和氟化工有限公司 | A kind of molding machine and processing method of grid line crossing skeleton |
| CN111497183A (en) * | 2020-04-30 | 2020-08-07 | 常州窗友塑胶有限公司 | Sealing rubber strip extrusion die |
| CN111775424A (en) * | 2020-07-02 | 2020-10-16 | 淮南文峰航天电缆有限公司 | Special-shaped cable sheath extruder head for remote terminal detection diagnosis control system |
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| CN204095100U (en) * | 2014-09-29 | 2015-01-14 | 中天科技装备电缆有限公司 | A kind of novel mould structure preventing mould gate material from piling up |
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| CN201204101Y (en) * | 2008-05-31 | 2009-03-04 | 江苏亨通电力电缆有限公司 | Novel mold for producing cable with symmetrical dual-color sheath |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107036571A (en) * | 2016-12-27 | 2017-08-11 | 江苏吴通连接器有限公司 | Exempt from the automatic correction system of tune head on a kind of full automatic cable production line |
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| CN109130137A (en) * | 2018-10-25 | 2019-01-04 | 陈丽璇 | A kind of tube single screw extrusion device that can reduce adverse current |
| CN109333956A (en) * | 2018-11-27 | 2019-02-15 | 金华永和氟化工有限公司 | A kind of molding machine and processing method of grid line crossing skeleton |
| CN111497183A (en) * | 2020-04-30 | 2020-08-07 | 常州窗友塑胶有限公司 | Sealing rubber strip extrusion die |
| CN111775424A (en) * | 2020-07-02 | 2020-10-16 | 淮南文峰航天电缆有限公司 | Special-shaped cable sheath extruder head for remote terminal detection diagnosis control system |
| CN111775424B (en) * | 2020-07-02 | 2021-12-10 | 淮南文峰航天电缆有限公司 | Special-shaped cable sheath extruder head for remote terminal detection diagnosis control system |
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| CB03 | Change of inventor or designer information |
Inventor after: Wang Zhirong Inventor before: Wang Zhirong Inventor before: Jie Xiangqian Inventor before: Liang Bin Inventor before: Ma Bin Inventor before: Zhou Jialong Inventor before: Chen Yukun Inventor before: Ge Yongxin |
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| COR | Change of bibliographic data | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150107 |