CN205159020U - Composite covering anti -burst forming die - Google Patents
Composite covering anti -burst forming die Download PDFInfo
- Publication number
- CN205159020U CN205159020U CN201520898341.5U CN201520898341U CN205159020U CN 205159020 U CN205159020 U CN 205159020U CN 201520898341 U CN201520898341 U CN 201520898341U CN 205159020 U CN205159020 U CN 205159020U
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- insulating cylinder
- die cavity
- push rod
- framed
- bush
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Abstract
The utility model discloses a composite covering anti -burst forming die, including framed, die cavity, runner, injecting glue hole, insulating cylinder and bush, die cavity, runner and injecting glue hole three are linked together, the bush is arranged in the insulating cylinder and is cooperated the insulating cylinder to use its characterized in that: still include protective sheath, telescoping device, left ejector pin and right ejector rod, the protective sheath sets up the left end at the bush, the telescoping device sets up the right -hand member at the bush, the insulating cylinder sets up between protective sheath and telescoping device, left side ejector pin setting is on die cavity left end framed, right ejector rod sets up on die cavity right -hand member framed. The utility model discloses an advantage: simple structure, convenient operation can avoid the burst emergence of phenomenon of insulating cylinder tip effectively, have improved the qualification rate of product, have practiced thrift the material in man -hour widely, have reduced manufacturing cost.
Description
Technical field
The utility model relates to mould, specifically, relates to a kind of composite sheath explosion-proof mould, belongs to voltage levels polymeric metal oxide surge arrester technical field.
Background technology
The core body that voltage levels polymeric metal oxide surge arrester is mainly become with resistor disc combo by composite sheath and other related components form.The injection moulding of composite sheath is an important procedure in lightning arrester manufacturing process.
Conventional composite sheath mould adopts fixed, and namely die cavity two ends adopt card slot type structure, is placed in fixing mould draw-in groove after insulating cylinder collocation lining, matched moulds also injects silicon rubber, silicon rubber is flowed into by hole for injecting glue, injects umbrella cover cavity space, through high temperature vulcanized shaping by runner.Because insulating cylinder under the high temperature conditions certain expansion can occur, when the length of insulating cylinder coordinates improper with die size, insulating cylinder after expansion can withstand in the draw-in groove at die cavity two ends, be easy to cause insulating cylinder to burst, therefore can consider the expansion space of 2 ‰ ~ 4 ‰ when designs of mold cavities length, explosion problem can obtain sizable improvement.Although considered the thermal expansion percentage elongation of insulating cylinder, but still end Decrepitation Phenomena can occur, reason is as follows:
Although reserved certain expansion space during 1 Design of Dies, due to the formula variation of each insulating cylinder producer, cause the thermal expansion ratio of insulating cylinder different, still there is certain probability when injection moulding and burst.
2, the insulating cylinder of the different batches of same producer, due to the difference of the condition such as production technology, environment, the thermal expansion ratio of insulating cylinder also can change, and also there is Decrepitation Phenomena during injection.
According to actual count, the conventional shaping booster rate of composite sheath reaches 1% ~ 2%, and every only loss reaches hundreds of to thousands of unit (electric pressure is higher, loses larger).For this reason, a kind of new technical scheme is needed to solve the problems referred to above.
Summary of the invention
The purpose of this utility model is to provide a kind of composite sheath explosion-proof mould.
The technical solution adopted in the utility model is:
A kind of composite sheath explosion-proof mould, comprise framed, die cavity, runner, hole for injecting glue, insulating cylinder and lining, described die cavity, runner is connected with hole for injecting glue three, described lining is placed in also coordinated insulation cylinder use in insulating cylinder, simultaneously, also comprise protective sleeve, retractor device, left push rod and right push rod, described protective sleeve is arranged on the left end of lining, described retractor device is arranged on the right-hand member of lining, described insulating cylinder is arranged between protective sleeve and retractor device, described left push rod be arranged on die cavity left end framed on, described right push rod be arranged on die cavity right-hand member framed on.
Further, the center line of described left push rod, right push rod and die cavity three is located along the same line.
Advantage of the present utility model: structure is simple, easy to operate, can efficiently avoid the generation of insulating cylinder end Decrepitation Phenomena, improves the qualification rate of product, has saved material in man-hour widely, has reduced production cost.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the position view of protective jacket and retractor device.
Wherein: 1, framed, 2, die cavity, 3, runner, 4, hole for injecting glue, 5, insulating cylinder, 6, lining, 7, protective sleeve, 8, retractor device, 9, left push rod, 10, right push rod.
Embodiment
As depicted in figs. 1 and 2, a kind of composite sheath explosion-proof mould, comprises framed 1, die cavity 2, runner 3, hole for injecting glue 4, insulating cylinder 5, lining 6, protective sleeve 7, retractor device 8, left push rod 9 and right push rod 10.Die cavity 2, runner 3 are connected with hole for injecting glue 4 three; lining 6 is placed in the interior also coordinated insulation cylinder 5 of insulating cylinder 5 and uses; protective sleeve 7 is arranged on the left end of lining 6; retractor device 8 is arranged on the right-hand member of lining 6; insulating cylinder 5 is arranged between protective sleeve 7 and retractor device 8; left push rod 9 is arranged on framed 1 of die cavity 2 left end, and right push rod 10 is arranged on framed 1 of die cavity 2 right-hand member, and the center line of left push rod 9, right push rod 10 and die cavity 2 three is located along the same line.
When producing; first lining, protective sleeve, insulating cylinder and retractor device are assembled (two end faces of protective sleeve and retractor device protection insulating cylinder); then be placed in the die cavity of mould; left push rod, right push rod are tightened fixing; silicon rubber injection is carried out after matched moulds; sizing material injected after 30 ~ 60s(silicon rubber first one-step forming in die cavity, no longer flow), unclamp right push rod 1 ~ 4mm(and determine depending on shaping length).In high temperature vulcanized process, insulating cylinder can promote retractor device after expanding and move right, and this has enough space operations after allowing insulating cylinder expand, and this avoid the generation of the phenomenon of explosion.After reaching regulation cure time, composite sheath just can take out, and completes molding procedure.Whole process operation simply, easily controls, and conforming product rate is high.
Claims (2)
1. a composite sheath explosion-proof mould, comprise framed, die cavity, runner, hole for injecting glue, insulating cylinder and lining, described die cavity, runner is connected with hole for injecting glue three, described lining is placed in also coordinated insulation cylinder use in insulating cylinder, it is characterized in that: also comprise protective sleeve, retractor device, left push rod and right push rod, described protective sleeve is arranged on the left end of lining, described retractor device is arranged on the right-hand member of lining, described insulating cylinder is arranged between protective sleeve and retractor device, described left push rod be arranged on die cavity left end framed on, described right push rod be arranged on die cavity right-hand member framed on.
2. a kind of composite sheath explosion-proof mould according to claim 1, is characterized in that: the center line of described left push rod, right push rod and die cavity three is located along the same line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520898341.5U CN205159020U (en) | 2015-11-12 | 2015-11-12 | Composite covering anti -burst forming die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520898341.5U CN205159020U (en) | 2015-11-12 | 2015-11-12 | Composite covering anti -burst forming die |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205159020U true CN205159020U (en) | 2016-04-13 |
Family
ID=55694687
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520898341.5U Active CN205159020U (en) | 2015-11-12 | 2015-11-12 | Composite covering anti -burst forming die |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205159020U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105291376A (en) * | 2015-11-12 | 2016-02-03 | 江东金具设备有限公司 | Polymeric housed explosion-resistant glue feeding-resistant forming die |
-
2015
- 2015-11-12 CN CN201520898341.5U patent/CN205159020U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105291376A (en) * | 2015-11-12 | 2016-02-03 | 江东金具设备有限公司 | Polymeric housed explosion-resistant glue feeding-resistant forming die |
| CN105291376B (en) * | 2015-11-12 | 2017-08-29 | 江东金具设备有限公司 | A kind of composite sheath explosion-proof is prevented into gum forming mould |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |