Mold for thin-edge insert
Technical Field
The utility model relates to the technical field of injection mold equipment, in particular to a thin-edge insert mold.
Background
In the injection mold industry, the injection molding has a thin edge structure, the mold core of the mold needs to be correspondingly provided with a concave outline matched with the thin edge structure outline of the injection molding, when the concave outline is arranged in the existing integrated structure mold core, two side edges of the outline are bumped in the use process, the thin edge structure of the injection molding is easily caused to be out of compliance after being molded, and the injection molding cannot be maintained, so that the mold core is scrapped wholly, and the use cost is high.
In view of this, we propose a thin-sided insert mold to solve the existing problem.
Disclosure of utility model
The utility model aims to provide a thin-edge insert die for solving the problems in the prior art.
In order to achieve the purpose, the thin-edge insert die comprises an upper die, an upper die cavity is formed in the bottom end of the upper die, one side of the bottom of the upper die is connected with a lower die, a first die core penetrating through the lower die is arranged in the center of the bottom surface of the lower die, a cavity for forming an injection molding piece is formed between the top end face of the first die core and the upper die cavity, a second die core is detachably connected with the inner ring of the top face of the first die core, an annular recess is formed between the outer peripheral wall of the top end of the second die core and the inner wall of the first die core, the recess is communicated with the cavity, and an annular thin-wall structure of the injection molding piece is formed during injection molding.
Preferably, the second mold core is an annular member, a plurality of countersunk through holes are distributed on the top surface of the second mold core at equal angles, and the second mold core is buried into the countersunk through holes through bolts and fixedly connected with the first mold core.
Preferably, the top end face of the countersunk through hole is provided with a movable plug-in sealing block, the bottom face of the sealing block is abutted with the top face of the bolt, and the top face of the sealing block and the top face of the second mold core are located on the same plane.
Preferably, the center of the upper die is provided with an injection molding opening communicated with the cavity, an injection molding block is arranged in the injection molding opening, and a plurality of injection molding channels communicated with the cavity are arranged on the injection molding block.
Preferably, the first mold core is fixedly connected with the lower mold through a fixed ring, a cavity is formed in the first mold core, and a third mold core for closing the bottom opening of the cavity is arranged in the cavity.
Compared with the prior art, the injection molding die has the beneficial effects that the detachable second die core is arranged on the first die core, the thin edge structure corresponding to the injection molding part is formed through the splicing structure, once the second die core is damaged, the disassembly and the replacement can be carried out, the durability of the die can be effectively improved, the service life of the injection molding die is prolonged, and the use cost is reduced.
Drawings
FIG. 1 is a schematic view of a cut-away of an overall three-dimensional structure of the present utility model;
FIG. 2 is a schematic view of a partial three-dimensional structure of the present utility model in section;
Fig. 3 is a schematic cross-sectional elevation view of the present utility model.
In the figure, 1, an upper die; 2, a lower die, 3, a fixing ring, 4, a first die core, 5, a cavity, 6, an injection molding block, 7, a second die core, 701, a countersunk through hole, 8, a sealing block and 9, a recess.
Detailed Description
The technical scheme of the utility model is further described below with reference to the attached drawings and specific embodiments.
Examples
As shown in fig. 1, fig. 2 and fig. 3, the mold for the thin-edge insert provided by the utility model comprises an upper mold 1, wherein an upper mold 1 cavity is formed in the bottom end of the upper mold 1, one side of the bottom of the upper mold 1 is connected with a lower mold 2, a first mold core 4 penetrating through the lower mold 2 is arranged in the center of the bottom surface of the lower mold 2, a cavity for molding an injection molding part is formed between the top end surface of the first mold core 4 and the upper mold 1 cavity, a second mold core 7 is detachably connected with an inner ring of the top surface of the first mold core 4, an annular recess 9 is formed between the outer peripheral wall of the top end of the second mold core 7 and the inner wall of the first mold core 4, the recess 9 is communicated with the cavity, and an annular thin-wall structure of the injection molding part is formed during injection molding.
In the embodiment, the second mold core 7 is an annular member, a plurality of countersunk through holes 701 are distributed on the top surface of the second mold core 7 at equal angles, and the second mold core 7 is fixedly connected with the first mold core 4 by embedding bolts into the countersunk through holes 701, so that the second mold core 7 is convenient to replace.
In the embodiment, the top end face of the countersunk through hole is provided with a movable plug-in sealing block 8, the bottom face of the sealing block is abutted with the top face of the bolt, and the top face of the sealing block 8 and the top face of the second mold core 7 are positioned on the same plane.
In the embodiment, an injection molding opening communicated with a cavity is formed in the center of the upper die 1, an injection molding block 6 is arranged in the injection molding opening, and a plurality of injection molding channels communicated with the cavity are formed in the injection molding block 6.
In the embodiment, the first mold core 4 is fixedly connected with the lower mold 2 through the fixing ring 3, a cavity 5 is formed in the first mold core 4, a third mold core for closing an opening at the bottom of the cavity is installed in the cavity 5 and used for forming a closed space, and the injection molding piece is formed after molten plastic is injected.
When the thin-edge insert die is used, the die is integrally arranged in an injection molding mechanism, the inside of the die is surrounded by an upper die 1 cavity at the bottom of an upper die 1 plate, a first die core 4 and a second die core 7, the third die core forms the shape outline of an injection molding part together, and a concave 9 communicated with a cavity is formed by matching the inner wall of the first die core 4 with the outer wall of the second die core 7, so that molten plastic enters the cavity and the concave 9 through a channel of an injection molding block 6 for filling and molding during injection molding of the injection molding mechanism, and injection molding production and manufacturing are completed.
The above-described embodiments are merely a few preferred embodiments of the present utility model, and many alternative modifications and combinations of the above-described embodiments will be apparent to those skilled in the art based on the technical solutions of the present utility model and the related teachings of the above-described embodiments.