CN209903834U - Product back-off demoulding structure - Google Patents

Product back-off demoulding structure Download PDF

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Publication number
CN209903834U
CN209903834U CN201920445832.2U CN201920445832U CN209903834U CN 209903834 U CN209903834 U CN 209903834U CN 201920445832 U CN201920445832 U CN 201920445832U CN 209903834 U CN209903834 U CN 209903834U
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China
Prior art keywords
piece
taking out
dovetail
pulling block
product
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Active
Application number
CN201920445832.2U
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Chinese (zh)
Inventor
刘俭亿
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Xiamen Jisheng Precision Mould Co Ltd
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Xiamen Jisheng Precision Mould Co Ltd
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Priority to CN201920445832.2U priority Critical patent/CN209903834U/en
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Abstract

The utility model provides a product back-off demoulding structure relates to mould technical field, including the die holder, be equipped with the base station on the die holder, be equipped with at least one dovetail on the base station, be equipped with first piece and the second of taking out to one side in the dovetail and take out the piece to one side, first upper portion of taking out the piece to one side and the second of taking out the piece to one side all is equipped with the semicircle die cavity, first piece and the second of taking out to one side take out to one side and form round die cavity behind the piece lock, round chamber bottom is equipped with the circular slot, the first bottom of taking out the piece to one side and the second of taking out to one side all is equipped with T type groove. The utility model discloses during the drawing of patterns, it is ejecting to take out the piece to one side with first oblique piece and the second through the knockout pin to take out in the dovetail of piece from the die holder to one side, because the bottom of taking out the piece to one side of first oblique piece and the second is less, when the bottom of taking out the piece to one side of first oblique piece and the second is in the dovetail top, can open naturally, can easily realize the terminal back-off drawing of patterns of product fixed column, need not to adopt complicated side structure of loosing core, the mould structure has been simplified, the mould cost is reduced, and productivity ratio still improves simultaneously.

Description

Product back-off demoulding structure
Technical Field
The utility model belongs to the technical field of the mould technique and specifically relates to a product back-off demoulding structure.
Background
Casing class product generally sets up a plurality of fixed columns along the edge, and sets up the back-off structure on the top of fixed column to the casing product need not the screw just can be continuous with the corresponding part buckle locking of product. As shown in fig. 1, in a housing product, 3 fixing posts B are provided on a housing a, and a hook-shaped reverse-buckling portion C is provided at a tail end of each fixing post B. The product has a relatively limited undercut structure and a relatively small undercut amount. If a common slide inclined top structure is adopted, the mold structure is formed by combining a plurality of slide inserts, the structure is complex, and the manufacturing cost is high.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a product back-off demoulding structure.
The utility model discloses specifically adopt following technical scheme to realize:
the utility model provides a product back-off demoulding structure, includes the die holder, be equipped with the base station on the die holder, be equipped with at least one dovetail on the base station, be equipped with first oblique piece and the second of taking out in the dovetail and take out the piece to one side, first upper portion of taking out the piece to one side and the second is taken out the piece to one side all is equipped with semicircle die cavity, first oblique piece and the second of taking out forms circle die cavity after taking out the piece lock to one side, circle die cavity bottom is equipped with the circular slot, first oblique bottom of taking out the piece and the second is taken out the piece to one side all is equipped with T type groove, T type inslot is.
Preferably, the inner diameter of the circular groove is larger than the inner diameter of the circular cavity.
Preferably, the first inclined drawing block and the second inclined drawing block are both in a dovetail tenon shape with a large top and a small bottom.
Preferably, the dovetail groove has the same shape as the first inclined pulling block and the second inclined pulling block after being buckled.
The utility model provides a product back-off demoulding structure, its beneficial effect lies in: during the drawing of patterns, draw the piece through the ejector pin with first oblique and draw the piece to one side with the second and push out from the dovetail of die holder, because the bottom of the piece is drawn to one side to first oblique and the piece is drawn to the second is less, when the bottom of the piece is drawn to one side to first oblique and the piece is drawn to the second and is in the dovetail top, can open naturally, can easily realize the terminal back-off drawing of patterns of product fixed column, need not to adopt complicated side structure of loosing core, simplified the mould structure, reduced the mould cost, still improve productivity ratio simultaneously.
Drawings
FIG. 1 is a schematic view of a product with an inverted button;
FIG. 2 is a perspective view of a product reverse-buckling demolding structure of the present invention;
FIG. 3 is a cross-sectional view of FIG. 2;
fig. 4 is a perspective view of the diagonal draw block and the ejector rod.
Detailed Description
To further illustrate the embodiments, the present invention provides the accompanying drawings. The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the embodiments. With these references, one of ordinary skill in the art will appreciate other possible embodiments and advantages of the present invention. Elements in the figures are not drawn to scale and like reference numerals are generally used to indicate like elements.
The present invention will now be further described with reference to the accompanying drawings and detailed description.
As shown in fig. 2-4, the product reverse-buckling demolding structure provided in this embodiment includes a die holder 1, a base 2 is provided on the die holder 1, and at least one dovetail groove 3 is provided on the base 2, and the embodiment is described as having three dovetail grooves 3, and the three dovetail grooves 3 are distributed at 120 ° intervals on the edge of the circular base 2. A first inclined pulling block 4 and a second inclined pulling block 5 are inserted into each dovetail groove 3, the first inclined pulling block 4 and the second inclined pulling block 5 are both in dovetail tenon shapes with large top and small bottom, and the shape of the first inclined pulling block 4 and the shape of the second inclined pulling block 5 after buckling are the same as the shape of the dovetail grooves 3. The upper portions of the first inclined pulling block 4 and the second inclined pulling block 5 are both provided with a semicircular cavity 6, when the first inclined pulling block 4 and the second inclined pulling block 5 are buckled, a circular cavity is formed, the bottom of the circular cavity is provided with a circular groove 7, and the inner diameter of the circular groove 7 is larger than that of the circular cavity. The bottoms of the first inclined pulling block 4 and the second inclined pulling block 5 are both provided with a T-shaped groove 8, and an ejector rod 9 is fixed in the T-shaped groove 8.
In the product back-off demoulding structure of the embodiment, when the product back-off demoulding structure is used, the first inclined pumping block 4 and the second inclined pumping block 5 are inserted into the dovetail groove 3, the upper ends of the first inclined pumping block 4 and the second inclined pumping block 5 are flush with the upper plane of the base platform 2, at the moment, the product is subjected to injection moulding, a fixing column of the product is formed in a circular cavity formed by buckling the first inclined pumping block 4 and the second inclined pumping block 5, and a back-off part at the tail end of the fixing column is formed in a circular groove 7 at the bottom of the circular cavity; after a product is molded, the first inclined pulling block 4 and the second inclined pulling block 5 are upwards ejected along the dovetail groove 3 through the ejection rod 9, and because the first inclined pulling block 4, the second inclined pulling block 5 and the dovetail groove 3 are in shapes with a large top and a small bottom, when the bottoms of the first inclined pulling block 4 and the second inclined pulling block 5 move to the upper part of the dovetail groove 3, the first inclined pulling block 4, the second inclined pulling block 5 and the dovetail groove 3 are in certain gaps, and under the action of gravity, the first inclined pulling block 4 and the second inclined pulling block 5 can naturally open, and at the moment, the back-off part of the product fixing column is separated from the first inclined pulling block 4 and the second inclined pulling block 5, so that the back-off demolding at the tail end of the product fixing column can be easily realized, a complex side core pulling structure is not needed, the mold structure is simplified, the mold cost is reduced, and the production rate is also improved.
While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (4)

1. The utility model provides a product back-off demoulding structure, includes the die holder, its characterized in that, be equipped with the base station on the die holder, be equipped with at least one dovetail on the base station, it takes out the piece to one side with the second to be equipped with first oblique taking out piece in the dovetail, first upper portion of taking out the piece to one side and taking out the piece to one side with the second all is equipped with semicircle die cavity, first take out the piece to one side and take out piece lock formation circle die cavity to one side with the second, circle die cavity bottom is equipped with the circular slot, first bottom of taking out the piece to one side and taking out the piece to one side with the second all is equipped with T type groove, T type inslot.
2. The product inverted-buckle demolding structure as claimed in claim 1, wherein: the inner diameter of the circular groove is larger than that of the circular cavity.
3. The product inverted-buckle demolding structure as claimed in claim 1, wherein: the first inclined pulling block and the second inclined pulling block are dovetail tenon shapes with big top and small bottom.
4. The product inverted-buckle ejection structure according to claim 3, wherein: the dovetail groove is the same as the first inclined pulling block and the second inclined pulling block after being buckled.
CN201920445832.2U 2019-04-03 2019-04-03 Product back-off demoulding structure Active CN209903834U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201920445832.2U CN209903834U (en) 2019-04-03 2019-04-03 Product back-off demoulding structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201920445832.2U CN209903834U (en) 2019-04-03 2019-04-03 Product back-off demoulding structure

Publications (1)

Publication Number Publication Date
CN209903834U true CN209903834U (en) 2020-01-07

Family

ID=69034833

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201920445832.2U Active CN209903834U (en) 2019-04-03 2019-04-03 Product back-off demoulding structure

Country Status (1)

Country Link
CN (1) CN209903834U (en)

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