CN215039743U

CN215039743U - High-precision injection mold

Info

Publication number: CN215039743U
Application number: CN202023212264.3U
Authority: CN
Inventors: 黄璜; 蔡霖清
Original assignee: Suzhou Tongyili Mould Industrial Co ltd
Current assignee: Suzhou Tongyili Mould Industrial Co ltd
Priority date: 2020-12-28
Filing date: 2020-12-28
Publication date: 2021-12-07
Anticipated expiration: 2030-12-28

Abstract

The utility model belongs to the technical field of the injection mold technique and specifically relates to a high accuracy injection mold, including cope match-plate pattern and lower bolster, the bottom fixed mounting of cope match-plate pattern has last mould, the top fixed mounting of lower bolster has the lower mould, go up the inside cushion chamber of having seted up of mould, the diffluence pore has all been seted up at the both ends of cushion chamber inboard, two inside equal fixed mounting in diffluence pore have the current-limiting seat, be equipped with the buffer board between two current-limiting seats, the both ends of buffer board can contact with the current-limiting seat, the bottom fixed mounting of buffer board has a plurality of inserted bars, seted up on the inner wall of cushion chamber a plurality of and inserted bar assorted slots, the inserted bar can slide in the inside of corresponding slot. The utility model discloses an inside the guide bar inserted the guiding hole, can be so that go up accurate and the die cavity cooperation of mould, improved the quality of injection molding like this greatly.

Description

High-precision injection mold

Technical Field

The utility model relates to an injection mold technical field especially relates to a high accuracy injection mold.

Background

Along with the development of society and the progress of science and technology, the application range and the quantity of injection molding also become bigger and bigger, and people's life also can not leave the use of injection molding more and more, especially the use of car injection molding.

The mould is indispensable technological equipment in modern industry, especially automobile, radio, aviation, motor and electric appliance, instrument, daily necessities, etc. The runner system of an injection mold is a flow channel for the melt from the nozzle of the injection machine to the mold cavity. In the injection molding process, molten plastic enters a mold cavity through a runner system, namely a nozzle, a runner and a sprue, and the design quality of the runner system has very important influence on the quality and production efficiency of injection molded parts. The common runner system consists of five parts, namely a main runner, a sub-runner, a pouring gate, a cold material cavity and a cavity.

Among the existing injection molds, the injection mold for injection molding of an automobile injection molded part plays a very important role. However, the main runner and the sub-runners are directly communicated, so that when the molten plastic flows into the cavity, the flow speed is overlarge, and the pressure of the molten plastic is also larger; therefore, the stamped trace is likely to be left on the injection molding part, so that the precision of the appearance of the injection molding part is influenced, and particularly, the stamped trace is very obvious when some transparent injection molding parts are injected, so that the quality, the precision and the appearance of the injection molding part are influenced, and the worry about the quality and the leakage is brought to consumers; in addition, when the upper die falls down, the lower die cannot be accurately aligned, so that the precision of the injection molding piece is influenced, and the working efficiency is reduced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problem of easy generation of the defects of the prior art, and providing a high-precision injection mold.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the design is a high-precision injection mold, which comprises an upper template and a lower template, wherein the bottom of the upper template is fixedly provided with an upper die, the top of the lower template is fixedly provided with a lower die, a buffer cavity is formed in the upper die, two shunting holes are formed in the two ends of the inner side of the buffer cavity, two current-limiting seats are fixedly arranged in the shunting holes, two buffer plates are arranged between the current-limiting seats, the two ends of each buffer plate can be in contact with the current-limiting seats, a plurality of inserting rods are fixedly arranged at the bottom of each buffer plate, a plurality of slots matched with the inserting rods are formed in the inner wall of each buffer cavity, and the inserting rods can slide in the corresponding slots.

Preferably, all the cover is equipped with buffer spring on the inserted bar, buffer spring is located between the diapire of buffer board and cushion chamber inboard.

Preferably, a cavity matched with the upper die is formed in the lower die, and the upper die can be matched with the cavity.

Preferably, the two ends of the top of the upper template are both provided with fixing screws in a threaded manner, and the upper template and the upper die are fixed through the fixing screws.

Preferably, the two ends of the top of the upper template are fixedly provided with guide rods, guide holes matched with the guide rods are formed in the lower die, and the guide rods can slide along the corresponding guide holes.

The utility model provides a pair of high accuracy injection mold, beneficial effect lies in:

1. the upper die can be accurately matched with the cavity by inserting the guide rod into the guide hole, so that the quality of the injection molding piece is greatly improved;

2. when the leading-in fused plastics of locating hole to the cushion chamber inside through moulding plastics, the buffer board can receive pressure and move down, then the both ends of buffer board can contact with the current-limiting seat, avoid the leading-in type intracavity of a large amount of fused plastics, then the buffer board resumes original state under buffer spring's effect, follow the slow leading-in type intracavity of reposition of redundant personnel hole at last, this condition of having just avoided the injection molding to have the stamp to the quality of injection molding has been improved.

Drawings

Fig. 1 is a schematic structural view of a high-precision injection mold provided by the present invention;

fig. 2 is the utility model provides a high accuracy injection mold's interior structure schematic diagram of last mould.

In the figure: the injection molding device comprises an upper template 1, an upper die 2, a lower template 3, a lower die 4, a cavity 41, a guide rod 5, a guide hole 6, an injection molding positioning hole 11, a fixing screw 12, a buffer cavity 13, a shunting hole 14, a buffer plate 15, an insert rod 16, an insert slot 17, a buffer spring 18 and a current limiting seat 19.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-2, a high accuracy injection mold, including cope match-plate pattern 1 and lower bolster 3, the bottom fixed mounting of cope match-plate pattern 1 has last mould 2, the equal threaded mounting in both ends at cope match-plate pattern 1 top has set screw 12, cope match-plate pattern 1 passes through set screw 12 with last mould 2 to be fixed, the top fixed mounting of lower bolster 3 has lower mould 4, set up on lower mould 4 with last mould 2 assorted die cavity 41, it can cooperate with die cavity 41 to go up mould 2, the equal fixed mounting in both ends at the top of cope match-plate pattern 1 has guide bar 5, set up guide bar 5 assorted guiding hole 6 on lower mould 4, guide bar 5 can slide along corresponding guiding hole 6. The guide rod 5 is inserted into the guide hole 6, so that the upper die 2 can be accurately matched with the cavity 41, and the quality of injection molding parts is greatly improved.

Go up 2 inside cushion chamber 13 of having seted up of mould, diversion hole 14 has all been seted up at the both ends of cushion chamber 13 inboard, two inside equal fixed mounting in diversion hole 14 have current-limiting seat 19, be equipped with buffer board 15 between two current-limiting seat 19, buffer board 15's both ends can contact with current-limiting seat 19, buffer board 15's bottom fixed mounting has a plurality of inserted bars 16, seted up on buffer chamber 13's the inner wall a plurality of and inserted bar 16 assorted slot 17, inserted bar 16 can slide in corresponding slot 17's inside, all the cover is equipped with buffer spring 18 on inserted bar 16, buffer spring 18 is located between buffer board 15 and the inboard diapire of cushion chamber 13.

When the melted plastics are led into the buffer cavity 13 through the injection molding positioning hole 11, the buffer plate 15 can move downwards under pressure, then two ends of the buffer plate 15 can be in contact with the flow limiting seat 19, a large amount of melted plastics are prevented from being led into the cavity 41, then the buffer plate 15 is restored to an original state under the action of the buffer spring 18, and finally the melted plastics are slowly led into the cavity 41 from the shunting hole 14, so that the situation that the injection molding piece is stamped is avoided, and the quality of the injection molding piece is improved.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A high-precision injection mold comprises an upper template (1) and a lower template (3), an upper die (2) is fixedly arranged at the bottom of the upper template (1), a lower die (4) is fixedly arranged at the top of the lower template (3), it is characterized in that a buffer cavity (13) is arranged in the upper die (2), two ends of the inner side of the buffer cavity (13) are respectively provided with a shunt hole (14), two current limiting seats (19) are fixedly arranged in the two shunt holes (14), a buffer plate (15) is arranged between the two current limiting seats (19), two ends of the buffer plate (15) can be contacted with the current-limiting seat (19), a plurality of inserted rods (16) are fixedly arranged at the bottom of the buffer plate (15), the inner wall of the buffer cavity (13) is provided with a plurality of slots (17) matched with the inserted rods (16), and the inserted rods (16) can slide in the corresponding slots (17).

2. A high precision injection mould according to claim 1, characterized in that the insert rods (16) are all sleeved with buffer springs (18), and the buffer springs (18) are located between the buffer plate (15) and the bottom wall inside the buffer cavity (13).

3. A high precision injection mold according to claim 2, characterized in that the lower mold (4) is provided with a cavity (41) matching with the upper mold (2), and the upper mold (2) can match with the cavity (41).

4. A high precision injection mold according to claim 3, characterized in that the top of the upper mold plate (1) has two ends with screw thread installed with fixing screws (12), the upper mold plate (1) and the upper mold (2) are fixed by the fixing screws (12).

5. A high-precision injection mold according to claim 1, characterized in that guide rods (5) are fixedly mounted at both ends of the top of the upper mold plate (1), guide holes (6) matched with the guide rods (5) are formed in the lower mold (4), and the guide rods (5) can slide along the corresponding guide holes (6).