CN109049555B - Umbrella-shaped pitched roof ejection mechanism - Google Patents
Umbrella-shaped pitched roof ejection mechanism Download PDFInfo
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- CN109049555B CN109049555B CN201811160513.3A CN201811160513A CN109049555B CN 109049555 B CN109049555 B CN 109049555B CN 201811160513 A CN201811160513 A CN 201811160513A CN 109049555 B CN109049555 B CN 109049555B
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- umbrella
- core
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- ejection
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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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/33—Moulds having transversely, e.g. radially, movable mould parts
- B29C45/332—Mountings or guides therefor; Drives therefor
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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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/40—Removing or ejecting moulded articles
- B29C45/44—Removing or ejecting moulded articles for undercut articles
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Walking Sticks, Umbrellas, And Fans (AREA)
Abstract
The invention relates to an umbrella-shaped pitched roof ejection mechanism which comprises a stepped core pulling core, wherein the core pulling core comprises a connecting section, an ejection section and a core pulling section, the connecting section is fixedly connected with a front mold, the ejection section is in a round table shape, a plurality of umbrella-shaped pitched roofs matched with the core pulling core are arranged on the outer edge of the core pulling core around the central axis of the core pulling core, a buckling groove is arranged on one side of each umbrella-shaped pitched roof close to the core pulling section, one end of each umbrella-shaped pitched roof close to the buckling groove and the core pulling section form a product circular tube cavity, the other end of each umbrella-shaped pitched roof is abutted against the connecting section, an inclined roof seat is arranged at one end of each umbrella-shaped pitched roof close to the connecting section, one end of each inclined roof seat is fixedly connected with the front mold, and the other end of each. The invention has the advantages of small occupied die space, low cost and simple and stable structure, and solves the problems of difficult demoulding of the product back-off glue position and interference between a demoulding ejection mechanism and a die.
Description
Technical Field
The invention relates to a mold ejection mechanism, in particular to an umbrella-shaped inclined ejector ejection mechanism.
Background
In injection mold, the position department is glued in product circle card pipe back-off, adopts the slider drawing of patterns usually, when doing the slider drawing of patterns according to product data analysis, because some mould area spaces are less, when the slider drawing of patterns, the peripheral spatial position of circle card pipe is not enough to dodge slider mechanism, and the position demolding is glued in the screens back-off when slider drawing of patterns stroke is not enough and produces the interference with other parts of mould, can't solve.
When the structure design of mould satisfies under the slider drawing of patterns stroke and the condition of not interfering with other parts of mould, such structure mould length is big, and hollow out construction appears in mould inner structure, not only increases the mould cost, and the structure is very unstable moreover, also can't avoid slider drawing of patterns mechanism and the part on the mould to interfere, is difficult to realize product injection moulding. Therefore, there is a need for an umbrella-shaped lifter ejection mechanism, which solves the above-mentioned problems.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide an umbrella-shaped inclined ejection mechanism which is small in occupied space area and solves the problems that a round clamping pipe reverse buckle glue position is difficult to eject and the ejection mechanism is interfered with a mould part.
The technical scheme adopted by the invention is as follows:
the utility model provides an umbrella-type pushes up ejection mechanism to one side, is including the core of loosing core that is the echelonment, the core of loosing core includes linkage segment, ejecting section and core-pulling section, wherein, linkage segment and front mould fixed connection, ejecting section is the round platform form, is equipped with a plurality ofly around its central axis and looses the anastomotic umbrella-type pushes up to one side of core-pulling section on loosing core outer fringe, is equipped with at one side that umbrella-type pushes up to one side near the core-pulling section and detains the position recess, the umbrella-type pushes up to one side near detaining the position recess one end and the section of loosing core and enclose into product pipe die cavity, the other end and the linkage segment butt of umbrella-type push up to one side, is equipped with oblique footstock at the one end that umbrella-type pushes up to one side near the linkage.
Preferably, one end of the umbrella-shaped pitched roof, which is close to the pitched roof seat, is provided with a convex clamping position, and the pitched roof seat is provided with a convex groove matched with the convex clamping position.
Preferably, a dovetail groove is formed in one side, away from the core-pulling core, of the umbrella-shaped pitched roof and is formed through die drawing.
Preferably, an angle formed by a symmetrical generatrix of the ejection section is greater than or equal to 2 ° and less than or equal to 6 °.
Preferably, the symmetry generatrix of the ejection section is angled by 4 °.
Preferably, the number of the umbrella-shaped inclined tops is four, and the angle formed by the symmetrical umbrella-shaped inclined tops is greater than or equal to 6 degrees and less than or equal to 14 degrees.
Preferably, the angle formed by the symmetrical umbrella-shaped inclined tops is 10 degrees.
The invention has the beneficial effects that:
(1) when the mold is opened, the core-pulling core moves towards the direction far away from the injection product, and because the ejection section is in a circular truncated cone shape, the outer diameter of one end of the ejection section close to the core-pulling section is larger than the outer diameter of one end of the ejection section close to the connecting section, the ejection section ejects the umbrella-shaped inclined top outwards for a certain distance during demolding, and then the buckling grooves on each umbrella-shaped inclined top are separated from the product circular clamping tube, so that demolding of the product circular clamping tube at the back-off glue position is realized, and the problem of difficult demolding of the back-off glue position in the prior art is;
(2) according to the invention, a certain angle is designed on the core-pulling section and the umbrella-shaped inclined tops, and the four umbrella-shaped inclined tops are matched for demoulding, so that the product is more effective in demoulding at the back-off glue position, the occupied mould space is small, and the problem of interference between the demoulding mechanism and other parts of the mould is effectively solved;
(3) one side of the umbrella-shaped pitched roof, which is far away from the core-pulling core, is provided with a dovetail groove for slope fixation, and the dovetail groove plays a role in guiding, so that the mold ejection mechanism moves more stably.
Drawings
FIG. 1 is a schematic structural view of a closed state of the present invention;
FIG. 2 is a top view of the closed state of the present invention;
FIG. 3 is a schematic structural view of the ejection state of the present invention;
FIG. 4 is a top view of the ejected state of the present invention;
FIG. 5 is a schematic perspective view of an exemplary embodiment of a tilting top mount;
FIG. 6 is a schematic perspective view of an umbrella-shaped pitched roof in the embodiment;
fig. 7 is a partial cross-sectional view of the present invention.
The reference numbers illustrate: a core-pulling core 1; a connecting section 11; an ejection section 12; a core-pulling section 13; an umbrella-shaped pitched roof 2; a buckling position groove 21; a convex clamping position 22; a dovetail groove 23; a slanted top mount 3; a convex recess 31.
Detailed Description
In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1 to 6, the umbrella-shaped lifter ejection mechanism of the invention comprises a core-pulling core 1 in a step shape, wherein the core-pulling core 1 comprises a connecting section 11, an ejection section 12 and a core-pulling section 13, wherein the connecting section 11 is fixedly connected with a front mold, the ejection section 12 is in a circular truncated cone shape, a plurality of umbrella-shaped lifters 2 matched with the core-pulling core 1 are arranged on the outer edge of the core-pulling core 1 around the central axis thereof, a buckling groove 21 is arranged on one side of the umbrella-shaped lifter 2 close to the core-pulling section 13, the buckling groove 21 is matched with a product circular clamping tube inverted buckling structure, one end of the umbrella-shaped lifter 2 close to the buckling groove 21 and the core-pulling section 13 enclose a product circular tube cavity, the other end of the umbrella-shaped lifter 2 is abutted against the connecting section 11, so as to reduce a gap between the ejection section 12 and the umbrella-shaped lifter 2, so that the umbrella-shaped lifter 2 is easier to be ejected outwards by the, an inclined top seat 3 is arranged at one end, close to the connecting section 11, of the umbrella-shaped inclined top 2, one end of the inclined top seat 3 is fixedly connected with the front mold, and the other end of the inclined top seat 3 is buckled with the umbrella-shaped inclined top 2. When the mold is ejected, the umbrella-shaped lifter 2 is ejected outwards by the ejection section 12, so that the umbrella-shaped lifter 2 is separated from a round clamping pipe of an injection molding product, product demolding is realized, and the problem that demolding is difficult at a back-off glue position in the prior art is solved.
As shown in fig. 5 to 7, a convex detent 22 is provided at one end of the umbrella-shaped lifter 2 close to the lifter base 3, and the lifter base 3 is provided with a convex groove 31 matching with the convex detent 22. The convex clamping position 22 of the umbrella-shaped pitched roof 2 is embedded in the convex groove 31 of the pitched roof seat 3, so that the umbrella-shaped pitched roof 2 is fixed conveniently, the umbrella-shaped pitched roof 2 is prevented from deviating, and the injection molding quality of an injection molding product is improved; meanwhile, the convex groove 31 provides a sufficient offset angle space for the umbrella-shaped lifter 2 when the ejector section 12 ejects the umbrella-shaped lifter 2.
As shown in fig. 2 and 6, a dovetail groove 23 is arranged on one side of the umbrella-shaped lifter 2, which is far away from the core-pulling core 1, the dovetail groove 23 plays a role in fixing the inclination of the umbrella-shaped lifter 2, is matched with the mold plate, and plays a role in guiding, so that the mold ejection mechanism moves more stably, and the dovetail groove 23 is formed by mold-drawing.
In the invention, when the angle formed by the symmetrical generatrix of the ejection section 12 is too large, although the umbrella-shaped lifter 2 can be separated from the inverted buckle glue position of the product circular clamping tube, the core-pulling core 1 cannot be completely separated from the injection product, which may cause the interference between the tube and the core-pulling section 13, and meanwhile, the overall width of the ejection section 12 is too large, thus improving the overall width of the mold and indirectly improving the cost of the mold. Naturally, the angle formed by the symmetric generatrix of the ejection section 12 is greater than or equal to 2 ° and less than or equal to 6 °. In this embodiment, the angle formed by the symmetric generatrix of the ejection section 12 is 4 °, which not only satisfies the ejection stroke of the mold, but also optimizes the overall width of the mold, and reduces the production cost of the mold.
As shown in fig. 2 and 4, the number of the umbrella-shaped inclined tops 2 is four, and the angle formed by the symmetrical umbrella-shaped inclined tops 2 is greater than or equal to 6 degrees and less than or equal to 14 degrees. In the present embodiment, the angle of the symmetrical umbrella-shaped pitched roof 2 is 10 °.
When the die is closed, a product is molded in the cavity, and the method is shown in figure 1; when a product after injection molding and cooling molding is subjected to demolding after a mold is opened, referring to fig. 2, the core pulling core 1 moves in the direction away from the injection molding product, and because the outer diameter of one end, close to the core pulling section 13, of the ejection section 12 is larger than the outer diameter of one end, close to the connecting section 11, of the ejection section 12, the umbrella-shaped lifter 2 is ejected outwards by the ejection section 12 for a certain distance during demolding, the umbrella-shaped lifter 2 deviates by a certain angle, then the buckling grooves 21 on the umbrella-shaped lifters 2 are separated from a product round clamping pipe, and product round clamping pipe back-buckling glue position demolding is realized.
The invention has the advantages of small occupied die space, low cost and simple and stable structure, and solves the problems of difficult demoulding of the product back-off glue position and interference between a demoulding ejection mechanism and a die.
Although the present invention has been described in detail with reference to the above embodiments, it will be apparent to those skilled in the art from this disclosure that various changes or modifications can be made herein without departing from the spirit and scope of the invention as defined in the appended claims. Therefore, the detailed description of the embodiments of the present disclosure is to be construed as merely illustrative, and not limitative of the remainder of the disclosure, but rather to limit the scope of the disclosure to the full extent set forth in the appended claims.
Claims (7)
1. The utility model provides an umbrella-type pushes up ejection mechanism to one side which characterized in that: the core pulling device comprises a core pulling core (1) in a step shape, wherein the core pulling core (1) comprises a connecting section (11), an ejection section (12) and a core pulling section (13), the connecting section (11) is fixedly connected with a front mold, the ejection section (12) is in a round table shape, a plurality of umbrella-shaped inclined tops (2) matched with the core pulling core (1) are arranged on the outer edge of the core pulling core (1) around the central axis of the core pulling core, a buckling groove (21) is arranged on one side, close to the core pulling section (13), of each umbrella-shaped inclined top (2), one end, close to the buckling groove (21), of each umbrella-shaped inclined top (2) and the core pulling section (13) are enclosed to form a product circular tube cavity, the other end of each umbrella-shaped inclined top (2) is abutted to the connecting section (11), an inclined top seat (3) is arranged at one end, close to the connecting section (11), of each umbrella-shaped inclined top seat (3), one end of each inclined top seat (3) is fixedly connected with the front mold, the outer diameter of one end, close to the core-pulling section (13), of the ejection section (12) is larger than that of one end, close to the connecting section (11), of the ejection section (12).
2. The umbrella-shaped pitched roof ejection mechanism according to claim 1, characterized in that: one end of the umbrella-shaped inclined top (2) close to the inclined top seat (3) is provided with a convex clamping position (22), and the inclined top seat (3) is provided with a convex groove (31) matched with the convex clamping position (22).
3. The umbrella-type lifter ejection mechanism according to claim 2, wherein: one side of the umbrella-shaped pitched roof (2) departing from the core-pulling core (1) is provided with a dovetail groove (23), and the dovetail groove (23) is formed through die drawing.
4. The umbrella-shaped pitched roof ejecting mechanism according to claim 1 or 3, characterized in that: the angle formed by the symmetrical generatrix of the ejection section (12) is more than or equal to 2 degrees and less than or equal to 6 degrees.
5. The umbrella-shaped pitched roof ejection mechanism according to claim 4, characterized in that: the angle formed by the symmetrical generatrix of the ejection section (12) is 4 degrees.
6. The umbrella-shaped pitched roof ejection mechanism according to claim 3, characterized in that: the number of the umbrella-shaped inclined tops (2) is 4, and the angle formed by the symmetrical umbrella-shaped inclined tops (2) is greater than or equal to 6 degrees and less than or equal to 14 degrees.
7. The umbrella-shaped pitched roof ejection mechanism according to claim 6, characterized in that: the angle formed by the symmetrical umbrella-shaped inclined top (2) is 10 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811160513.3A CN109049555B (en) | 2018-09-30 | 2018-09-30 | Umbrella-shaped pitched roof ejection mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811160513.3A CN109049555B (en) | 2018-09-30 | 2018-09-30 | Umbrella-shaped pitched roof ejection mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109049555A CN109049555A (en) | 2018-12-21 |
| CN109049555B true CN109049555B (en) | 2020-07-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811160513.3A Active CN109049555B (en) | 2018-09-30 | 2018-09-30 | Umbrella-shaped pitched roof ejection mechanism |
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| CN (1) | CN109049555B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112026110B (en) * | 2019-06-03 | 2022-09-16 | 苏州汉扬精密电子有限公司 | Demoulding structure of mould |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62164517A (en) * | 1986-01-16 | 1987-07-21 | Matsushita Electric Ind Co Ltd | Molding mold |
| US20130216643A1 (en) * | 2010-11-08 | 2013-08-22 | Husky Injection Molding Systems Ltd | Split mold insert for forming a neck portion of a preform and the mold stack incorporating same |
| CN203305479U (en) * | 2013-06-07 | 2013-11-27 | 深圳市畅盛精密模具有限公司 | Inner column core-pulling mechanism and injection mold |
| CN204136361U (en) * | 2014-08-14 | 2015-02-04 | 中山市恒滨塑胶模具有限公司 | A kind of ejecting structure of front mould oblique top |
| CN106363879A (en) * | 2016-12-06 | 2017-02-01 | 东莞市百通精密模具制造有限公司 | Telescopic helve |
| CN107042615A (en) * | 2017-04-26 | 2017-08-15 | 泸州市胜科模具制造有限公司 | There is the path plastic parts oblique top slider mould of annular groove on hole wall |
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| CN109049555A (en) | 2018-12-21 |
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