CN211165235U - Exempt from to transfer extrusion formula mould - Google Patents
Exempt from to transfer extrusion formula mould Download PDFInfo
- Publication number
- CN211165235U CN211165235U CN201921921226.XU CN201921921226U CN211165235U CN 211165235 U CN211165235 U CN 211165235U CN 201921921226 U CN201921921226 U CN 201921921226U CN 211165235 U CN211165235 U CN 211165235U
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- mold core
- die
- hole
- die sleeve
- sleeve
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- 238000001125 extrusion Methods 0.000 title claims abstract description 24
- 238000012546 transfer Methods 0.000 title claims abstract description 15
- 239000002184 metal Substances 0.000 claims description 3
- 239000004033 plastic Substances 0.000 abstract description 29
- 229920003023 plastic Polymers 0.000 abstract description 29
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 238000012545 processing Methods 0.000 abstract description 4
- 239000004020 conductor Substances 0.000 description 6
- 239000003292 glue Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012797 qualification Methods 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 230000001154 acute effect Effects 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000003000 extruded plastic Substances 0.000 description 1
- 238000007765 extrusion coating Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model discloses an exempt from to transfer extrusion formula mould belongs to cable processing technology field. The utility model discloses an exempt from to transfer extrusion formula mould, including mold core and die sleeve, the inside die sleeve through-hole that is equipped with of die sleeve, the mold core is including arranging the conical mold core head in the die sleeve through-hole in, and the inside longer mold core through-hole that is equipped with of mold core, mold core head and mold core through-hole form the mold core mouth, its characterized in that, the die sleeve through-hole includes shorter bearing diameter section and the cone pipeline section that form in proper order from the tip of die sleeve, the mold core through-hole is the cone pipe, and the mold core mouth is pressed close to but is not more than bearing diameter section. The die core and the die sleeve of the adjustment-free extrusion die provided by the utility model have reasonable structures, and ensure that the molten plastic between the die core and the die sleeve has better plastic tensile property after being extruded, so that the produced cable has excellent insulating and stretching properties; the problem of plastic pouring blocks up the mold core in the production process is solved.
Description
Technical Field
The utility model belongs to the technical field of the cable processing, concretely relates to exempt from to transfer extrusion formula mould.
Background
When an old-fashioned die is used for processing the insulated wire, the produced insulated wire has unqualified tensile property because the distance between the die core mouth part and the die sleeve mouth part is larger and the plastic extrusion pressure is larger; when the machine is stopped and the conductor is replaced, the glue pouring is easy to occur in the mold core, so that the conductor is difficult to pass through the mold, the material waste is large, and the production efficiency is low and the machine needs to be repeatedly disassembled and assembled. These problems are particularly acute when the old die is used for extruding and wrapping the small-section wire with high insulating and tensile properties.
Disclosure of Invention
The utility model aims at providing an exempt from to transfer extrusion formula mould can be applicable to the little electric wire of crowded package insulating sectional area, and insulating tensile properties is high to can satisfy the requirement of high-efficient production.
Specifically speaking, the utility model discloses an adopt following technical scheme to realize:
the utility model provides an exempt from to transfer extrusion formula mould, includes mold core and die sleeve, the inside die sleeve through-hole that is equipped with of die sleeve, the mold core is including arranging the conical mold core head in the die sleeve through-hole in, and the inside mold core through-hole that is equipped with of mold core, mold core head and mold core through-hole form the mold core mouth, a serial communication port, the die sleeve through-hole includes the bearing footpath section and the cone pipe section that form in proper order from the tip of die sleeve, the mold core through-hole is the cone pipe, and the mold core mouth is pressed close to but is not more.
Furthermore, the difference between the cone angle of the through hole of the die sleeve and the cone angle of the head part of the die core is 1-3 degrees, so that a cavity is formed between the two.
Further, the taper angle of the die sleeve through hole is 41-43 degrees.
Further, the cone angle of the mold core head is 40-42 degrees.
Further, the length of the bearing diameter section is 0.15 mm-0.30 mm.
Further, the length of the bearing diameter section is 0.15 mm-0.20 mm.
Further, the outer side of the end part is step-shaped and used for fixing the die sleeve.
Further, the wall thickness of the die core nozzle is 0.15 mm to 0.20 mm.
Further, the mold core and the mold sleeve are made of metal.
The utility model has the advantages as follows: the utility model discloses an exempt from to transfer extrusion formula mould, the rational in infrastructure design of mold core and die sleeve has reduced the shearing stress that fused plastics extrudes pressure and plastics itself in the mould, makes fused plastics have better plastics tensile properties after extruding between mold core and the die sleeve, thereby the cable product of producing has better insulating elongation ability, thereby the cable product of producing has better insulating elongation at break, cable quality reliability is higher, insulating properties is good, has improved the qualification rate of product greatly; the increased length of the mold core cone and the shorter diameter bearing section of the mold sleeve effectively reduce the distance between the mold core and the outer end of the mold sleeve, reduce the extrusion pressure of the molten plastic, improve the glue yield of the molten plastic, solve the problem that the molten plastic pours glue to block the mold core in the production process, improve the threading efficiency and effectively improve the production efficiency.
Drawings
Fig. 1 is a cross-sectional view of a mold core along an axis according to an embodiment of the present invention.
Fig. 2 is a cross-sectional view of a die case of an embodiment of the present invention along an axis.
Fig. 3 is a partial enlarged view of the die case according to the embodiment of the present invention.
Fig. 4 is a side view of the end of the mold core after the mold core and the mold sleeve are assembled.
Fig. 5 is a cross-sectional view taken along the plane a-a in fig. 4.
Reference numerals in the drawings: 1-mold core, 11-mold core head, 12-mold core through hole, 13-mold core nozzle, 2-mold sleeve, 21-end, 22-mold sleeve through hole, 221-diameter bearing section, 222-cone pipe section, 3-cavity and 4-lead.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings in conjunction with embodiments.
Example (b):
the utility model discloses an embodiment is an exempt from to transfer extrusion formula mould. The structure of the adjustment-free extrusion die is shown in figures 1-5.
Novel exempt from to transfer extrusion formula mould, including mold core 1 and die sleeve 2, its material is metal, and is special, adopts the stainless steel to make, has higher intensity.
As shown in figure 1, the mold core 1 comprises a mold core head 11 and a main body, the mold core head 11 is a cone, the cone angle is α, a mold core through hole 12 is arranged in the mold core and is a cone pipe, the mold core head 11 and the mold core through hole 12 form a mold core nozzle 13, preferably, the wall thickness of the mold core nozzle is designed to be 0.15 mm-0.20 mm, the length of the mold core through hole 12 can be effectively increased by controlling the thickness of the mold core end, the mold core through hole can be extended to the end part of the mold sleeve 2, a flow channel of molten plastic between the mold sleeve 2 and the mold core 1 is smoother, the inner wall of the mold core through hole 12 is smooth, the conductor is guaranteed not to be scratched and deformed when passing through the mold core through hole 12, and the surface roughness Ra.
As shown in fig. 2 to 3, a die case through hole 22 is provided in the die case 2. The die sleeve through hole 22 is divided into two sections, namely a shorter diameter bearing section 221 and a cone pipe section 222 from the end part 21 of the die sleeve 2. The shorter diameter-bearing section 221 effectively increases the length of the taper pipe section 222 of the die sleeve and reduces the distance between the die core nozzle 13 and the end part 21 of the die sleeve compared with the common die sleeve; the molten plastic flows more smoothly, the back pressure of the die sleeve in the process of extruding and insulating the molten plastic is reduced, the extruded plastic has better tensile property, the performance of the plastic is ensured, and the plastic is prevented from pouring to block the die core when the traction of the lead is stopped. For example, for insulated wires having an outer diameter of less than 3 mm, the diameter-bearing section 221 is designed to be 0.15 mm to 0.30 mm. More preferably, the diameter bearing section 221 is designed to be 0.15 mm to 0.20 mm, and compared with the case that the diameter bearing section is larger than 0.2 mm, the counter pressure of the die sleeve in the extrusion coating process of the molten plastic can be better reduced, and the insulating tensile property can be improved by 20% to 25%.
The outside of the die sleeve is also divided into two sections, wherein the end 21 is provided with a step for fixing the die sleeve.
As shown in fig. 4-5, the taper angle β of the taper pipe section 222 is slightly larger than the taper angle α of the mold core head 11, so that a thin cavity 3 is formed between the mold sleeve through hole 22 and the mold core head 11. preferably, the angle difference between β and α is 1 to 3 degrees. for example, the taper angle of the taper pipe section 222 is 41 to 43 degrees, the taper angle β of the mold core head 11 is designed to 40 to 42 degrees. the reasonable taper angle can effectively reduce the extrusion pressure of the molten plastic and improve the glue yield of the molten plastic, thereby improving the production efficiency.
Application the utility model discloses an exempt from to transfer extrusion formula mould to implement extrusion molding process's process does: will the utility model discloses an exempt from to transfer extrusion formula mould and install inside wire and cable extrusion molding equipment aircraft nose, single stranded conductor 4 that will produce processing penetrates mold core through-hole 12, and in the cavity 3 between mold core 1 and the die sleeve 2 was crowded to molten plastics, along with pulling of conductor sinle silk and molten plastics's flow, the even cladding of plastics forms the insulating layer on conductor 4 at mold core mouth 13.
The utility model discloses an exempt from to transfer extrusion formula mould, the rational in infrastructure design of mold core and die sleeve has reduced the shearing stress that fused plastics extrudes pressure and plastics itself in the mould, makes fused plastics have better plastics tensile properties after extruding between mold core and the die sleeve, thereby the cable product of producing has better insulating elongation ability, thereby the cable product of producing has better insulating elongation at break, cable quality reliability is higher, insulating properties is good, has improved the qualification rate of product greatly; the increased length of the mold core cone and the shorter diameter bearing section of the mold sleeve effectively reduce the distance between the mold core and the outer end of the mold sleeve, reduce the extrusion pressure of the molten plastic, improve the glue yield of the molten plastic, solve the problem that the molten plastic pours glue to block the mold core in the production process, improve the threading efficiency and effectively improve the production efficiency. The utility model aims at providing an exempt from to transfer extrusion formula mould can be applicable to the little electric wire of crowded package insulating sectional area, and insulating tensile properties is high to can satisfy the requirement of high-efficient production.
Although the present invention has been described with reference to the preferred embodiments, the embodiments are not intended to limit the present invention. Any equivalent changes or modifications made without departing from the spirit and scope of the present invention also belong to the protection scope of the present invention. The scope of protection of the invention should therefore be determined with reference to the claims that follow.
Claims (9)
1. The utility model provides an exempt from to transfer extrusion formula mould, includes mold core (1) and die sleeve (2), die sleeve (2) inside is equipped with die sleeve through-hole (22), and mold core (1) is including arranging conical mold core head (11) in die sleeve through-hole (22) in, and mold core (1) inside is equipped with mold core through-hole (12), and mold core head (11) form mold core mouth (13) with mold core through-hole (12), its characterized in that, die sleeve through-hole (22) are including bearing footpath section (221) and cone pipe section (222) that begin to form in proper order from tip (21) of die sleeve (2), mold core through-hole (12) are the cone pipe, and mold core mouth (13) are pressed close to but do not exceed bearing footpath section (221).
2. A squeeze-free die as claimed in claim 1, wherein the taper angle of the die sleeve through hole (22) differs from the taper angle of the die core head (11) by 1 ° to 3 ° so that a cavity (3) is formed therebetween.
3. A die as claimed in claim 2, wherein the taper angle of the die case through hole (22) is 41 ° to 43 °.
4. A die as claimed in claim 2, wherein the taper angle of the core head (11) is 40 ° to 42 °.
5. A die as claimed in claim 1, wherein the length of the diameter receiving section (221) is 0.15 mm to 0.30 mm.
6. A die as claimed in claim 1, wherein the length of the diameter receiving section (221) is 0.15 mm to 0.20 mm.
7. A squeeze die as claimed in claim 1, wherein the outer side of the end portion (21) is stepped for fixing the die case.
8. A squeeze die as defined in claim 1, wherein the wall thickness of the die core nozzle (13) is 0.15 mm to 0.20 mm.
9. The extrusion die of claim 1, wherein the die core (1) and the die sleeve (2) are made of metal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921921226.XU CN211165235U (en) | 2019-11-08 | 2019-11-08 | Exempt from to transfer extrusion formula mould |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921921226.XU CN211165235U (en) | 2019-11-08 | 2019-11-08 | Exempt from to transfer extrusion formula mould |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211165235U true CN211165235U (en) | 2020-08-04 |
Family
ID=71821039
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921921226.XU Active CN211165235U (en) | 2019-11-08 | 2019-11-08 | Exempt from to transfer extrusion formula mould |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211165235U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117174399A (en) * | 2023-11-02 | 2023-12-05 | 西安西电光电缆有限责任公司 | Extrusion molding die, extrusion molding device and inner skin extrusion equipment for cable |
-
2019
- 2019-11-08 CN CN201921921226.XU patent/CN211165235U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117174399A (en) * | 2023-11-02 | 2023-12-05 | 西安西电光电缆有限责任公司 | Extrusion molding die, extrusion molding device and inner skin extrusion equipment for cable |
| CN117174399B (en) * | 2023-11-02 | 2024-02-02 | 西安西电光电缆有限责任公司 | Extrusion molding die, extrusion molding device and inner skin extrusion equipment for cable |
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