CN209599745U - A kind of mould structure for pin hole road in forming plastic cement part - Google Patents
A kind of mould structure for pin hole road in forming plastic cement part Download PDFInfo
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- CN209599745U CN209599745U CN201920210490.6U CN201920210490U CN209599745U CN 209599745 U CN209599745 U CN 209599745U CN 201920210490 U CN201920210490 U CN 201920210490U CN 209599745 U CN209599745 U CN 209599745U
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- upper mold
- lower die
- groove
- double wedge
- pin hole
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Abstract
The utility model discloses a kind of mould structure for pin hole road in forming plastic cement part, it include activity upper mold, with upper mold bottom surface, the upper mold groove being recessed upwards is formed on the upper mold bottom surface, arranged for interval has upper mold double wedge in left-right direction for the inside of the upper mold groove；And, fixed lower die, its lower section for being placed in the activity upper mold, the fixed lower die has lower die top surface, it is formed with the lower die groove to lower recess on the lower die top surface, arranged for interval has lower die double wedge and the lower die double wedge and the upper mold double wedge mutual dislocation in left-right direction for the inside of the lower die groove.The utility model has the beneficial effects that: being acted using the upper lower open die of activity upper mold and fixed lower die, the molding of zero axle pin hole is directly realized in plastic parts, abandoning tradition uses the molding mode of loose core of oil cylinder, not only can guarantee the concentricity requirement in required hole, but also can guarantee the dimensional stability of pin hole.
Description
Technical field
The utility model relates to injection mold fields, in particular, a kind of mould for pin hole road in forming plastic cement part
Lamps structure.
Background technique
There are more pivot pin pore structure needs on plastics product, the pin hole on particularly greater than 200mm is needed in mould
Injection molding on tool.Usually generally use loose core of oil cylinder structure.Referring to Figure 1, plastic parts 1, core bar 2, oil cylinder 3 in figure.By oil
The stroke limit of cylinder 3 limits or limited (mold is big, can not be installed in equipment and produce) by die size also to be produced by plastics sometimes
The limitation of product structure can not be directly realized by the due functional configuration of product normal through injection molding.In addition, by injection pressure
It influences, after injection molding, the position degree of pin hole, concentricity not can guarantee；Usual practice is needing pivot pin after product injection molding
Hole site carries out secondary operation, and the formation of pin hole is realized with the mode of drilling, has both increased complexity and the worker of work
Labor intensity, and not can guarantee drilling quality (deep position, which drills, is easy partial center).
Utility model content
The technical problems to be solved in the utility model be the drawbacks of being brought with loose core of oil cylinder provide it is a kind of it is novel at
The mould structure in pin hole road in type plastic parts.
In order to realize the purpose, the technical solution of the utility model is as follows: one kind is for pin hole in forming plastic cement part
The mould structure in road includes,
Activity upper mold is formed with the upper mold groove being recessed upwards with upper mold bottom surface on the upper mold bottom surface, it is described on
Mould groove extends in left-right direction, and arranged for interval has upper mold double wedge in left-right direction for the inside of the upper mold groove；And
Fixed lower die, is placed in the lower section of the activity upper mold, and the fixed lower die has relative to the upper mold bottom
The lower die top surface in face is formed with the lower die groove to lower recess relative to the upper mold groove on the lower die top surface, described
Lower die groove extends in left-right direction, the inside of the lower die groove in left-right direction arranged for interval have lower die double wedge and it is described under
Mould double wedge and the upper mold double wedge mutual dislocation；
When lower die top surface face contact equal with the upper mold bottom surface, the upper mold double wedge and the lower die double wedge are mutual
Engagement has gap to define the lower forming cavity for forming lower U section, institute between the upper mold double wedge and the lower die groove
Stating between lower die double wedge and the upper mold groove has gap to define the upper forming cavity for forming upper U section.
As a kind of preferred embodiment for the mould structure in pin hole road in forming plastic cement part, the adjacent upper molding
Both chamber and the lower forming cavity communicate with each other.
As a kind of preferred embodiment for the mould structure in pin hole road in forming plastic cement part, the upper mold groove and institute
Stating lower die groove is arc groove.
As a kind of preferred embodiment for the mould structure in pin hole road in forming plastic cement part, the upper mold double wedge is from institute
The bottom surface for stating the upper mold groove begins to extend downwardly, and the lower die double wedge begins to upwardly extend from the top surface of the lower die groove.
Compared with prior art, the beneficial effects of the utility model at least that: utilize activity upper mold and fixed lower die
Upper lower open die movement, realizes the molding of zero axle pin hole directly on plastic parts, and abandoning tradition uses the molding mode of loose core of oil cylinder,
Not only it can guarantee the concentricity requirement in required hole, but also can guarantee the dimensional stability of pin hole.
In addition to the utility model described above solve the technical issues of, constitute technical solution technical characteristic and by
Except beneficial effect brought by the technical characteristic of these technical solutions, other technologies problem that the utility model can solve,
The other technical characteristics for including in technical solution and these technical characteristic bring beneficial effects, will make in conjunction with attached drawing into one
Step detailed description.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the prior art.
Fig. 2 is the structural schematic diagram (closed mode state) of an embodiment of the present invention.
Fig. 3 is the structural schematic diagram (die opening state) of an embodiment of the present invention.
Fig. 4 is the structural schematic diagram of activity upper mold and pivot pin duct in an embodiment of the present invention.
Fig. 5 is the structural schematic diagram that lower die Yu pivot pin duct are fixed in an embodiment of the present invention.
Specific embodiment
The utility model is described in further detail below by specific embodiment combination attached drawing.It needs herein
It is bright, the explanation of these embodiments is used to help to understand the utility model, but do not constitute the limit to the utility model
It is fixed.In addition, as long as technical characteristic involved in the various embodiments of the present invention described below is each other not
Constituting conflict can be combined with each other.
Fig. 2 to 5 is referred to, a kind of mould structure for pin hole road in forming plastic cement part is shown in the figure, is used for
The pivot pin duct being greater than on 200mm on forming plastic cement part 1.
The mould structure is mainly made of activity upper mold 2 and fixed lower die 3 etc..
The activity upper mold 2 has upper mold bottom surface 20.Be formed on the upper mold bottom surface 20 be recessed upwards it is arc-shaped
Upper mold groove 201.The upper mold groove 201 extends in left-right direction.In the present embodiment, there are two the upper mold grooves 201, left
Right arrangement.Arranged for interval has upper mold double wedge 202 in left-right direction for the inside of the upper mold groove 201.The upper mold double wedge 202 is certainly
Begin to extend downwardly in the bottom surface of the upper mold groove 201.
The fixed lower die 3 is placed in the lower section of the activity upper mold 2.The fixed lower die 3 has relative on described
The lower die top surface 30 of mould bottom surface 20.It is formed on the lower die top surface 30 relative to the upper mold groove 201 to lower recess
Arc-shaped lower die groove 301.The lower die groove 301 extends in left-right direction.In the present embodiment, the lower die groove 301
There are two, left-right situs.The inside of the lower die groove 301 in left-right direction arranged for interval have lower die double wedge 302 and it is described under
Mould double wedge 302 and 202 mutual dislocation of upper mold double wedge.The top surface of the lower die double wedge 302 from the lower die groove 301 begin to
Upper extension.
Move down the activity upper mold 2, the lower die top surface 30 face contact equal with the upper mold bottom surface 20.The upper mold is convex
(the upper mold double wedge 202 and the lower die double wedge 302 are close in left and right directions for tooth 202 and the lower die double wedge 302 intermeshing
Cooperation, does not stay gap).There is gap (lower direction, front direction and rear between the upper mold double wedge 202 and the lower die groove 301
Xiang Junyou clearance space) to define the U just set for forming lower U section 101() lower forming cavity.The lower die double wedge 302
Between the upper mold groove 201 with gap to define for forming the upper inverted U of U section 102() upper forming cavity (top
There is clearance space to, front direction and rear direction).Both the adjacent upper forming cavity and the lower forming cavity communicate with each other,
So that the upper U section 102 connects with the lower U section 101, a whole pivot pin duct is formed.The pivot pin duct can be with
The die cavity of forming plastic cement part 1 is connected, that is, forms the pivot pin duct together during injection moulding plastic part 1.Can also be with,
Independent injection molding, is separately provided feed inlet.
The course of work:
Step S1 merges the activity upper mold 2 and the fixed lower die 3.
Step S2 starts to be molded, and liquid material is full of the upper U section 102 and the lower U section 101.
Step S3, after cooling, the upper U section 102 is connected with the lower U section 101, constitutes pivot pin duct.
Using the activity upper mold 2 and the fixed lower die 3, the concentricity requirement in required hole not only can guarantee, but also can guarantee
The dimensional stability of pin hole.
And the embodiments of the present invention is only expressed above, therefore the description thereof is more specific and detailed, but and cannot be
And it is interpreted as the limitation to utility model patent range.It should be pointed out that for those of ordinary skill in the art, In
Under the premise of not departing from the utility model design, various modifications and improvements can be made, these belong to the utility model
Protection scope.Therefore, the scope of protection shall be subject to the appended claims for the utility model patent.
Claims (4)
1. a kind of mould structure for pin hole road in forming plastic cement part, which is characterized in that include,
Activity upper mold is formed with the upper mold groove being recessed upwards with upper mold bottom surface on the upper mold bottom surface, the upper mold is recessed
Slot extends in left-right direction, and arranged for interval has upper mold double wedge in left-right direction for the inside of the upper mold groove；And
Fixed lower die, is placed in the lower section of the activity upper mold, and the fixed lower die has relative to the upper mold bottom surface
Lower die top surface is formed with the lower die groove to lower recess relative to the upper mold groove, the lower die on the lower die top surface
Groove extends in left-right direction, and arranged for interval has lower die double wedge in left-right direction and the lower die is convex for the inside of the lower die groove
Tooth and the upper mold double wedge mutual dislocation；
When lower die top surface face contact equal with the upper mold bottom surface, the upper mold double wedge is mutually nibbled with the lower die double wedge
It closes, has gap to define the lower forming cavity for forming lower U section between the upper mold double wedge and the lower die groove, it is described
Have gap to define the upper forming cavity for forming upper U section between lower die double wedge and the upper mold groove.
2. a kind of mould structure for pin hole road in forming plastic cement part according to claim 1, which is characterized in that phase
Both the adjacent upper forming cavity and the lower forming cavity communicate with each other.
3. a kind of mould structure for pin hole road in forming plastic cement part according to claim 1 or 2, feature exist
In the upper mold groove and the lower die groove are arc groove.
4. a kind of mould structure for pin hole road in forming plastic cement part according to claim 1 or 2, feature exist
Begin to extend downwardly from the bottom surface of the upper mold groove in, the upper mold double wedge, the lower die double wedge is from the top of the lower die groove
Begin to upwardly extend in face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920210490.6U CN209599745U (en) | 2019-02-19 | 2019-02-19 | A kind of mould structure for pin hole road in forming plastic cement part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920210490.6U CN209599745U (en) | 2019-02-19 | 2019-02-19 | A kind of mould structure for pin hole road in forming plastic cement part |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209599745U true CN209599745U (en) | 2019-11-08 |
Family
ID=68403806
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920210490.6U Active CN209599745U (en) | 2019-02-19 | 2019-02-19 | A kind of mould structure for pin hole road in forming plastic cement part |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209599745U (en) |
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2019
- 2019-02-19 CN CN201920210490.6U patent/CN209599745U/en active Active
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