A kind of plastic cement thin-wall product molding die
Technical field
The utility model relates to plastic cement thin-wall product technical field of processing equipment, and in particular to a kind of plastic cement thin-wall product at
Pattern tool.
Background technique
Plastic cement thin-wall product is a kind of electronic component that the required precision of product coplane degree is high, plastic cement thin-wall product generally by
Pattern tool completes the process.The structure of plastic cement thin-wall product molding die includes: to be installed on male model mould bases used at present
Male model and it is installed on master mold on master mold mould bases and opposite with male model, is provided on the male model inner wall opposite with master mold
One injection molding die cavity, be provided on the master mold inner wall that male model is opposite with first injection molding die cavity it is corresponding second injection molding die cavity,
When male model and master mold pairing mold, the first injection molding die cavity on male model is just combined to form with the second injection molding die cavity on master mold
Injection mold cavity is respectively arranged with a corresponding connection injection mold cavity in the left and right ends of the groove bottom wall of the second injection molding die cavity of master mold
Glue-feeder.Molding die used at present has the drawback that: closing in plastic cement through two glue-feeder injection male models and master mold
During the injection mold cavity formed after mould, plastic cement is to converge from both sides to intermediate flow and to form plastic cement thin in injection mold cavity
Wall product causes the center of plastic cement thin-wall product that can be recessed to master mold side, causes to be processed since plastic cement internal stress is excessive
Plastic cement thin-wall product coplane degree it is poor, coplane degree only has 0.2mm, significantly impacts product quality.
Utility model content
The purpose of the utility model is to provide a kind of plastic cement thin-walled productions for being capable of processing out the good plastic cement thin-wall product of coplane degree
Product processing and forming mold.
To achieve the above object, the utility model adopts the technical scheme that a kind of plastic cement thin-walled
Product forming mould, comprising: the male model that is installed on male model mould bases and be installed on mother on master mold mould bases and opposite with male model
Mould is provided with the first injection molding die cavity on the male model inner wall opposite with master mold, is provided on the master mold inner wall opposite with male model
The second injection molding die cavity corresponding with the first injection molding die cavity, the first injection mould when male model and the molding of master mold pairing, on male model
The second injection molding die cavity on slot and master mold is just combined to form injection mold cavity, it is characterised in that: first in male model is molded die cavity
Groove bottom wall on be provided with the stress relief hole at corresponding injection mold cavity center, set in the groove bottom wall of the second injection molding die cavity of master mold
It sets there are three the glue-feeder of corresponding connection injection mold cavity, three glue-feeders are distributed in left end, the right side of the second injection molding die cavity of master mold
End and upper end.
Further, a kind of plastic cement thin-wall product molding die above-mentioned, in which: male model passes through several first Quick Release bolts
It is locked on male model mould bases, master mold is locked on master mold mould bases by several second Quick Release bolts.
Further, a kind of plastic cement thin-wall product molding die above-mentioned, in which: several positioning are provided on master mold
Pin is correspondingly arranged on several locating slots for positioning pin insertion on male model.
Further, a kind of plastic cement thin-wall product molding die above-mentioned, in which: the specific connection of positioning pin and master mold is tied
Structure are as follows: the positioning pin mounting groove to placement positioning pin is provided on master mold, positioning pin is locked by clamping screw
In corresponding positioning pin mounting groove.
Through the implementation of the above technical solution, the beneficial effects of the utility model are: plastic cement is molding in injection mold cavity
In the process, the internal stress of plastic cement can be discharged by stress relief hole, so that the internal stress of plastic cement reduces in injection mold cavity, from
And the coplane degree of plastic cement thin-wall product is improved, and due to the presence of stress relief hole, so that the plastic cement thin-walled being cooled and shaped
It will form a stretching column protruding to male model side and corresponding with stress relief hole at the center of product, be opened in this way
Cheng Zhong, in stress relief hole and under stretching frictional force effect between column, male model can will stretch column and carry out to male model side when die sinking
It is of short duration to pull, it is synchronous will the center being recessed on plastic cement thin-wall product to master mold side also be carried out to male model side it is of short duration pull, to change
It has been apt to the degree that the center of plastic cement thin-wall product is recessed to master mold side, has further improved the coplane degree of plastic cement thin-wall product, make
The coplane degree for obtaining the plastic cement thin-wall product finally processed is good, and coplane degree is less than 0.1mm, ensure that product quality.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of plastic cement thin-wall product molding die described in the utility model.
Fig. 2 is the structural schematic diagram of master mold shown in Fig. 1.
Fig. 3 is the structural schematic diagram of male model shown in Fig. 1.
Fig. 4 is a kind of knot for the plastic cement thin-wall product that plastic cement thin-wall product molding die processes described in the utility model
Structure schematic diagram.
Specific embodiment
The utility model is described in further detail in the following with reference to the drawings and specific embodiments.
As shown in Figure 1, Figure 2, Figure 3, Figure 4, a kind of plastic cement thin-wall product molding die, comprising: be installed on male model
Male model 2 on mould bases 1 and it is installed on master mold 4 on master mold mould bases 3 and opposite with male model 2, in the male model 2 opposite with master mold 4
It is provided with the first injection molding die cavity 21 on inner wall, is provided on master mold 4 inner wall opposite with male model 2 and the first injection molding 21 phase of die cavity
Corresponding second injection molding die cavity 31, the first injection molding die cavity 21 and master mold 4 when male model 2 and the molding of 4 pairing of master mold, on male model 2
On second injection molding die cavity 41 be just combined to form injection mold cavity, male model 2 first injection molding die cavity 21 groove bottom wall on be arranged
There is the stress relief hole 22 at corresponding injection mold cavity center, in the groove bottom wall of the second injection molding die cavity 41 of master mold 4 there are three settings
The glue-feeder 5 of corresponding connection injection mold cavity, three glue-feeders 5 be distributed in the left end of the second injection molding die cavity 41 of master mold 4, right end and
Upper end;In the present embodiment, the first Quick Release threaded hole 23 of several perforation male models 2 is provided on male model 2, in male model mould bases 1
On be provided with several second Quick Release threaded holes, the first Quick Release screw thread on the second Quick Release threaded hole on male model mould bases 1 and male model 2
Hole 23 corresponds, and is respectively arranged with one first in each pair of corresponding first Quick Release threaded hole 23 and the second Quick Release threaded hole
Quick Release bolt 6, male model 2 is locked on male model mould bases 1 by several first Quick Release bolts 6, likewise, setting on master mold 4
It is equipped with the third Quick Release threaded hole 42 of several perforation master molds 4, several 4th Quick Release threaded holes are provided on master mold mould bases 1, it is female
The third Quick Release threaded hole 42 on the 4th Quick Release threaded hole and master mold 4 on mould mould bases 3 corresponds, in each pair of corresponding third
It is respectively arranged with a second Quick Release bolt 7 in Quick Release threaded hole 42 and the 4th Quick Release threaded hole, passes through several second in master mold 4
Quick Release bolt 7 is locked on master mold mould bases 3, in this way when male model or master mold need repairing because of failure, it is only necessary to dismounting pair
The Quick Release bolt answered can remove the male model of failure or master mold from corresponding mould bases, substantially reduce maintenance time;In
In the present embodiment, several positioning pins 8 are provided on master mold 4, be correspondingly arranged on male model 2 it is several for positioning pin 8 be inserted into
Locating slot 9 can be such that male model and master mold precision positioning molds, ensure that mold by the precision-fit of positioning pin and locating slot
Machining accuracy, not only substantially increases the product quality of thin-wall product, but also reduces male model and master mold and misplace and damage
Probability extends the service life of mold;In the present embodiment, the specific connection structure of positioning pin 8 and master mold 4 are as follows: in master mold 4
On be provided with positioning pin mounting groove to placement positioning pin 8, positioning pin 8 is locked by clamping screw 10 corresponding fixed
In the pin mounting groove of position, the connection structure of above-mentioned positioning pin and master mold is simple and easy to assembly;
The working principle of the utility model is as follows:
It is female in male model 2 and the clamping process close to each other of master mold 4 first by male model 2 and the gradually molding close to each other of master mold 4
Positioning pin 8 on mould 4 can be gradually inserted the locating slot 9 on male model 2, so that male model 2 and 4 precision positioning of master mold is enable to mold, when
When male model 2 and 4 pairing of master mold mold, the first injection molding die cavity 21 on male model 2 and the second injection molding die cavity 41 on master mold 4 are just right
Conjunction forms injection mold cavity, then that plastic cement is same to the left end of injection mold cavity, right end and upper end from three glue-feeders 5 on master mold 2
When material feeding, plastic cement can not only be made more rapidly to uniformly flow into injection mold cavity in this way, improve injection efficiency, and plastic cement can be prevented
There is the phenomenon that upper end starved in thin-wall product;And during plastic cement is molding in injection mold cavity, the internal stress of plastic cement can lead to
Overstress relief hole is discharged, so that can be formed simultaneously one to male model at the center for the plastic cement thin-wall product 10 being cooled and shaped
Stretching column side protrusion and corresponding with stress relief hole;It is after plastic cement cooling and shaping, male model 2 and master mold 4 is gradually mutual
Far from die sinking, in the process of die sinking, in stress relief hole and under stretching frictional force effect between column 101,2 meeting of male model when die sinking
To stretch column to male model side carry out it is of short duration pull, and then it is synchronous by plastic cement thin-wall product 10 to the center that master mold side is recessed to public affairs
Mould side is pullled, thus the degree that the center for effectively improving plastic cement thin-wall product 10 is recessed to master mold side, and then improve injection molding
The coplane degree of thin-wall product 10, so that the coplane degree of the plastic cement thin-wall product 10 finally processed is good, coplane degree is less than 0.1mm.
The utility model has the advantages that: during plastic cement is molding in injection mold cavity, the internal stress of plastic cement can be by answering
Power relief hole is discharged, so that the internal stress of plastic cement reduces in injection mold cavity, so as to improve the coplanar of plastic cement thin-wall product
Degree, and due to the presence of stress relief hole, so that will form one to public affairs at the center for the plastic cement thin-wall product being cooled and shaped
Stretching column mould side protrusion and corresponding with stress relief hole in stress relief hole and stretches column so in the process of die sinking
Between frictional force effect under, when die sinking male model can will stretch column to male model side carry out it is of short duration pull, synchronization produces plastic cement thin-walled
On product to the center that master mold side is recessed also carry out to male model side it is of short duration pull, so as to improve plastic cement thin-wall product center to mother
The degree of mould side recess, further improves the coplane degree of plastic cement thin-wall product, so that the plastic cement thin-wall product finally processed
Coplane degree it is good, coplane degree be less than 0.1mm, ensure that product quality.