CN210911021U

CN210911021U - Simplified secondary demolding structure for front mold

Info

Publication number: CN210911021U
Application number: CN201921870153.6U
Authority: CN
Inventors: 孙沪
Original assignee: Shenzhen Zhenming Technology Co ltd
Current assignee: Shenzhen Zhenming Technology Co ltd
Priority date: 2019-11-01
Filing date: 2019-11-01
Publication date: 2020-07-03
Anticipated expiration: 2029-11-01

Abstract

The utility model discloses a front mould simplified form secondary demoulding structure, including last mould and bed die, the template is installed to the inboard of going up the mould, go up and install four group's hollow tubes between mould and the bed die, go up the lower part of mould and install first spring, the lower part of first spring is glued there is the rubber block, the lower part of rubber block is glued there is the guide arm, the guide arm runs through the mid-mounting of template and has the dog, the inlet port has been seted up to the lateral part of dog, the first recess with dog matched with is seted up to the lower part of template, the air guide channel has all been seted up at the middle part of rubber block, guide arm and dog, the intake pipe is installed on the upper portion of going up the mould, the second recess has been seted up at the middle part of bed die, the internally mounted of second recess has the second spring, the backup pad. The utility model discloses the simple and convenient receipts of realizing the dog store up, the atress of effectual realization drawing of patterns and balanced drawing of patterns.

Description

Simplified secondary demolding structure for front mold

Technical Field

The utility model relates to a plastic mould technical field specifically is a front mould simplified form secondary demoulding structure.

Background

The plastic product is mainly characterized in that plastic is used as a main raw material, various plastic products or components are manufactured by processing technologies such as injection, extrusion, hollow forming and the like, a plastic mold is usually used during the production of the plastic product, the plastic mold is developed and applied at a higher speed, when the currently used mold is used for processing the plastic product with a circular deep bone position, because the connection depth between the plastic product with the deep bone position and a front mold is too large, in the demolding process, the demolding process is generally carried out twice, firstly, when an upper mold is separated from a lower mold, an insert needle arranged on the upper mold is stopped at the upper part of the plastic product for one-time demolding, although the thermal separation distance is increased, the insert needle is driven by a limiting groove to move upwards, and then the ejector needle arranged on the lower mold is used for secondary demolding.

Although the above-mentioned method can realize the demolding process, in the injection molding process, the insert pin is located at the bottom, which easily affects the molding of the plastic product, and on the other hand, the demolding is performed only by using the insert pin, so that the plastic product is easily damaged due to the uneven stress.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a simplified form secondary demoulding structure of front mould, the simple and convenient receipts of realizing the dog store up, avoids influencing the shaping of plastic goods, simultaneously, the effectual realization drawing of patterns and the atress of balanced drawing of patterns prevent to damage the finished product of moulding plastics to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a simplified secondary demolding structure of a front mold comprises an upper mold and a lower mold, wherein a template is installed on the inner side of the upper mold, four groups of hollow tubes are installed between the upper mold and the lower mold in a centrosymmetric manner, four groups of first springs are installed on the lower portion of the upper mold in a centrosymmetric manner, rubber blocks are glued on the lower portions of the four groups of first springs, guide rods are glued on the lower portions of the four groups of rubber blocks, the four groups of guide rods penetrate through the middle of the template and are provided with stop blocks, air inlet holes are formed in the side portions of each group of stop blocks, through holes matched with the guide rods are formed in the middle of the template, first grooves matched with the stop blocks are formed in the lower portion of the template, air guide channels are formed in the middle portions of the rubber blocks, the guide rods and the stop blocks and are communicated with the air, the four groups of air inlet pipes are communicated with the four groups of hollow pipes respectively, a second groove is formed in the middle of the lower die, a second spring is arranged inside the second groove, a supporting plate is arranged on the upper portion of the second spring, and the lower die is connected with the upper die in an inserting mode.

Preferably, an injection molding pipe is connected between the upper mold and the mold plate, and the center line of the injection molding pipe, the center line of the upper mold and the center line of the mold plate are coaxially arranged.

Preferably, the first spring, the rubber block and the guide rod are all positioned on the inner side of the hollow pipe, and the outer wall of the rubber block is connected with the inner wall of the hollow pipe in a sliding mode.

Preferably, the check block is arranged in a strip block shape, and the outer wall of the check block and the inner wall of the first groove are smooth surfaces.

Preferably, the end parts of the four groups of air inlet pipes are provided with inlet valves, and sealing rings are arranged between the air inlet pipes and the upper die.

Preferably, the lateral part of the lower die is provided with a plug-in groove matched with the upper die.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the structure similar to an insert pin is formed by the first spring, the rubber block, the guide rod and the stop block, and before injection molding, the stop block is positioned in the first groove through the elasticity of the first spring, so that the storage of the stop block is simply and conveniently realized, and the influence of the stop block on injection molding is avoided;

2. injection moulding finishes the back, the mould removes in the drive of the equipment that utilizes the outside, utilize outside air feeder to pass through the inside injection air of intake pipe to the hollow tube simultaneously, under the promotion of air, most air promotes the block rubber and slides in the inside of hollow tube, and then promote the dog and break away from the position of first recess, and then promote the finished product removal of moulding plastics, then the part air enters into the template through air guide channel and inlet port, go up the mould and mould plastics the position between the finished product, and utilize gas to promote the finished product of moulding plastics, further realization drawing of patterns process.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is an enlarged schematic view of a portion a of fig. 1 according to the present invention;

FIG. 3 is a schematic side view and sectional view of the upper mold part of the present invention;

fig. 4 is a schematic side view and sectional view of the structure of the lower mold part of the present invention.

In the figure: 1. an upper die; 2. a lower die; 3. a template; 4. a hollow tube; 5. a first spring; 6. a rubber block; 7. a guide bar; 8. a stopper; 9. an air inlet; 10. a through hole; 11. a first groove; 12. an air guide channel; 13. an air inlet pipe; 14. a second groove; 15. a second spring; 16. a support plate; 17. injection molding a tube; 18. an intake valve; 19. a seal ring; 20. and (4) inserting grooves.

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. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: a simplified secondary demolding structure of a front mold comprises an upper mold 1 and a lower mold 2, an injection molding pipe 17 used for entering raw materials is connected between the upper mold 1 and a template 3, the central line of the injection molding pipe 17, the central line of the upper mold 1 and the central line of the template 3 are coaxially arranged, the template 3 is installed on the inner side of the upper mold 1, four groups of hollow pipes 4 are installed between the upper mold 1 and the lower mold 2 in a central symmetry manner, four groups of first springs 5 are installed on the lower portion of the upper mold 1 in a central symmetry manner, rubber blocks 6 are glued on the lower portions of the four groups of first springs 5, guide rods 7 are glued on the lower portions of the four groups of rubber blocks 6, check blocks 8 are installed on the middle portions of the four groups of guide rods 7 penetrating through the template 3, air inlets 9 are formed in the side portions of each group of check blocks 8, through holes 10 matched with the guide rods 7 are, the stop block 8 is arranged in a strip block shape, the outer wall of the stop block 8 and the inner wall of the first groove 11 are both smooth surfaces, the stop block 8 is convenient to be matched with the first groove 11, the storage of the stop block 8 is realized, the first spring 5, the rubber block 6 and the guide rod 7 are all positioned on the inner side of the hollow tube 4, the guide rod 7 is convenient to move to realize demoulding first under the pushing of gas, and the outer wall of the rubber block 6 is connected with the inner wall of the hollow tube 4 in a sliding mode;

referring to fig. 1, 2 and 3, air guide channels 12 are formed in the middle portions of the rubber block 6, the guide rod 7 and the stopper 8, the air guide channels 12 are communicated with the air inlet holes 9, four sets of air inlet pipes 13 are symmetrically installed in the center of the upper portion of the upper mold 1, the four sets of air inlet pipes 13 are respectively communicated with the four sets of hollow pipes 4, an air inlet valve 18 is installed at the end portion of each set of air inlet pipe 13, a sealing ring 19 for sealing is arranged between each air inlet pipe 13 and the upper mold 1, a second groove 14 is formed in the middle portion of the lower mold 2, a second spring 15 is installed inside the second groove 14, a support plate 16 is installed on the upper portion of the second spring 15, the lower mold 2 is inserted into the upper mold 1, and an insertion.

The working principle is as follows: when the injection molding machine is used, a structure similar to an insert needle is formed by the first spring 5, the rubber block 6, the guide rod 7 and the stop dog 8, before injection molding, the stop dog 8 is positioned in the first groove 11 through the elasticity of the first spring 5, the storage of the stop dog 8 is simply and conveniently realized, the stop dog 8 is prevented from influencing injection molding, after the injection molding is finished, the upper mold 1 is driven to move by external equipment, meanwhile, air is injected into the hollow tube 4 through the air inlet pipe 13 by external air supply equipment, most of the air pushes the rubber block 6 to slide in the hollow tube 4 under the pushing of the air, the stop dog 8 is further pushed to be separated from the part of the first groove 11, the injection molding finished product is further pushed to move, then a small part of the air enters the template 3 and the part between the upper mold 1 and the injection molding finished product through the air guide channel 12 and the air inlet hole 9, and the injection molding, further realizing the demoulding process.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a simplified form secondary demoulding structure of front mould, includes mould (1) and bed die (2), its characterized in that: the inner side of the upper die (1) is provided with a die plate (3), four groups of hollow pipes (4) are arranged between the upper die (1) and the lower die (2) in a centrosymmetric manner, four groups of first springs (5) are arranged in a centrosymmetric manner on the lower part of the upper die (1), the lower parts of the four groups of first springs (5) are all spliced with rubber blocks (6), guide rods (7) are all spliced on the lower parts of the four groups of rubber blocks (6), the guide rods (7) all penetrate through the middle part of the die plate (3) and are provided with check blocks (8), air inlet holes (9) are all formed in the side parts of the check blocks (8), through holes (10) matched with the guide rods (7) are formed in the middle part of the die plate (3), first grooves (11) matched with the check blocks (8) are formed in the lower part of the die plate (3), air guide channels (12) are formed in the middle parts of the rubber, the air guide channel (12) is communicated with the air inlet hole (9), four groups of air inlet pipes (13) are symmetrically arranged at the center of the upper portion of the upper die (1), the four groups of air inlet pipes (13) are communicated with the four groups of hollow pipes (4) respectively, a second groove (14) is formed in the middle of the lower die (2), a second spring (15) is arranged inside the second groove (14), a supporting plate (16) is arranged on the upper portion of the second spring (15), and the lower die (2) is connected with the upper die (1) in an inserting mode.

2. The simplified secondary demolding structure for the front mold as claimed in claim 1, wherein: an injection molding pipe (17) is connected between the upper die (1) and the template (3), and the center line of the injection molding pipe (17) is coaxial with the center line of the upper die (1) and the center line of the template (3).

3. The simplified secondary demolding structure for the front mold as claimed in claim 1, wherein: the first spring (5), the rubber block (6) and the guide rod (7) are all located on the inner side of the hollow tube (4), and the outer wall of the rubber block (6) is connected with the inner wall of the hollow tube (4) in a sliding mode.

4. The simplified secondary demolding structure for the front mold as claimed in claim 1, wherein: the check block (8) is arranged in a strip block shape, and the outer wall of the check block (8) and the inner wall of the first groove (11) are smooth surfaces.

5. The simplified secondary demolding structure for the front mold as claimed in claim 1, wherein: and inlet valves (18) are installed at the end parts of the four groups of air inlet pipes (13), and sealing rings (19) are arranged between the air inlet pipes (13) and the upper die (1).

6. The simplified secondary demolding structure for the front mold as claimed in claim 1, wherein: and the side part of the lower die (2) is provided with an inserting groove (20) matched with the upper die (1).