CN219055023U

CN219055023U - Demolding device for plastic mold

Info

Publication number: CN219055023U
Application number: CN202223501767.1U
Authority: CN
Inventors: 李勇权
Original assignee: Wuhan Kemaikang Technology Co ltd
Current assignee: Wuhan Kemaikang Technology Co ltd
Priority date: 2022-12-27
Filing date: 2022-12-27
Publication date: 2023-05-23
Anticipated expiration: 2032-12-27

Abstract

The utility model discloses a demolding device for a plastic mold, which comprises a cylinder airtight base and a metal cylinder, wherein a piston air cavity is arranged in the middle of the metal cylinder, a piston ejection assembly is connected inside the piston air cavity, an airtight valve core is arranged at an air hole of the metal cylinder, one end of the airtight valve core is fixedly connected with a sealing thread seat, one end of the sealing thread seat is in threaded connection with a metal air guide pipeline, and one end of the metal air guide pipeline is fixedly connected with a quick connecting joint structure. The utility model has good flexible ejection effect through the first piston block, the second piston block, the tension spring section, the ejection column and the pushing ball, can avoid damage to the surface of the die, and can prevent the die blank from being ejected directly due to excessive air pressure by adopting the design of the first piston block and the second piston block; the utility model has good butt joint effect, can be quickly connected and can perform air supply operation, thereby improving the convenience of installation and ensuring the tightness of connection.

Description

Demolding device for plastic mold

Technical Field

The utility model relates to the technical field of plastic molds, in particular to a demolding device for a plastic mold.

Background

The plastic mold is a kind of combined mold for compression molding, extrusion molding, injection, blow molding and low foaming molding, and the demolding device is needed for demolding.

Patent number CN202220840484.0 discloses a novel drawing of patterns device for plastic mould, including the backup pad, the last fixed surface of backup pad is connected with the supporting box, and the last fixed surface of supporting box is connected with the shaping platform, and first recess has been seted up to the upper surface of shaping platform. This novel shedder is used to plastic mould, through shaping roof, the guide bar, first air bar, cast the liquid hole, first recess and second recess set up, both hands are pressed down shaping roof, drive the guide bar, the guide bar drives first air bar downwardly moving, thereby form an organic wholely with the shaping platform, then pour casting liquid from casting the liquid hole, casting liquid is fixed in the centre of first recess and second recess, casting liquid easy operation sets up a plurality of not equidimension first recesses and a plurality of first push rod, the second push rod, can carry out the drawing of patterns simultaneously with a plurality of moulds, help improving work efficiency, save physical power and time, and the first recess of equidimension not can have more selectivity.

The above-mentioned disclosed demoulding device has the disadvantage that a plurality of moulds can be simultaneously demoulded by utilizing a plurality of first push rods and second push rods, and the plastic surface of the product is easy to damage during demoulding by adopting a rigid demoulding mode.

Disclosure of Invention

The present utility model is directed to a demolding device for plastic molds, which solves the above-mentioned problems in the prior art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a shedder for plastic mould, includes barrel airtight base and metal barrel, the middle part and the metal barrel fixed connection on barrel airtight base top, metal barrel middle part is equipped with the piston air cavity, the internal connection in piston air cavity has piston liftout subassembly, airtight case is installed to the gas pocket department of metal barrel, the one end fixedly connected with seal screw thread seat of airtight case, the one end threaded connection of seal screw thread seat has metal air guide pipeline, the one end fixedly connected with quick connect joint structure of metal air guide pipeline.

Preferably, the quick connecting joint structure comprises an inner sleeve and an outer sleeve gasket, a rubber plug block is arranged in the inner sleeve gasket, a connecting cavity is formed in the middle of the outer sleeve gasket, a conical air guide nozzle is arranged in the connecting cavity, the conical air guide nozzle is in plug connection with the rubber plug block, and a closed interface is fixedly arranged at one end of the conical air guide nozzle.

Preferably, the outer edge of the inner insertion sleeve is fixedly provided with a rubber check ring, and the rubber check ring is connected with the connecting cavity.

Preferably, the piston top material component comprises a first piston block and a second piston block which are arranged in the piston air cavity, the top end of the second piston block is connected with a top column, and the top end of the first piston block is fixedly connected with a pushing ball.

Preferably, a tension spring section is connected between the first piston block and the second piston block.

Preferably, the length of the connecting cavity is greater than the length of the inner sleeve.

The utility model has the technical effects and advantages that:

(1) According to the demolding device for the plastic mold, the first piston block, the second piston block, the tension spring section, the ejector column and the pushing ball are arranged, so that the demolding device has a good flexible ejection effect, damage to the surface of the mold can be avoided, and the mold blank can be prevented from being ejected directly by the aid of the design of the first piston block and the second piston block due to overlarge air pressure.

(2) According to the demolding device for the plastic mold, the inner insert sleeve, the outer seal sleeve, the conical air guide nozzle, the connecting cavity, the rubber plug block and the rubber check ring are arranged, so that the demolding device has a good butt joint connecting effect, can be used for quickly connecting and performing air supply operation, improves the convenience of installation, and has good connection tightness to prevent insufficient air pressure caused by air leakage.

Drawings

Fig. 1 is a schematic perspective view of the present utility model.

Fig. 2 is a schematic view of the internal structure of the metal cylinder according to the present utility model.

Fig. 3 is a schematic structural view of a metal air guide pipe according to the present utility model.

FIG. 4 is a schematic diagram of the assembly of the present utility model with a plastic mold.

In the figure: 1. a cylinder body sealing base; 2. a metal cylinder; 3. a first piston block; 4. pushing the ball; 5. a metal air guide pipe; 6. an inner inserting sleeve; 7. an outer sealing sleeve; 8. sealing the interface; 9. a second piston block; 10. a top column; 11. a tension spring section; 12. an airtight valve core; 13. sealing the thread seat; 14. a piston air cavity; 15. a conical air guide nozzle; 16. a connecting cavity; 17. a rubber stopper; 18. and a rubber retainer ring.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The utility model provides a demolding device for a plastic mold as shown in fig. 1-4, which comprises a cylinder airtight base 1 and a metal cylinder 2, wherein the middle part of the top end of the cylinder airtight base 1 is fixedly connected with the metal cylinder 2, a piston air cavity 14 is arranged in the middle part of the metal cylinder 2, a piston ejection assembly is connected inside the piston air cavity 14, an airtight valve core 12 is arranged at an air hole of the metal cylinder 2, one end of the airtight valve core 12 is fixedly connected with a sealing thread seat 13, one end of the sealing thread seat 13 is in threaded connection with a metal air guide pipeline 5, and one end of the metal air guide pipeline 5 is fixedly connected with a quick connecting joint structure.

In the embodiment, the quick connecting joint structure comprises an inner sleeve 6 and an outer sealing sleeve 7, a rubber plug 17 is arranged in the inner sleeve 6, a connecting cavity 16 is formed in the middle of the outer sealing sleeve 7, a conical air guide nozzle 15 is arranged in the connecting cavity 16, the conical air guide nozzle 15 is in plug connection with the rubber plug 17, and a sealing interface 8 is fixedly arranged at one end of the conical air guide nozzle 15; the outer edge of the inner insertion sleeve 6 is fixedly provided with a rubber check ring 18, the rubber check ring 18 is connected with a connecting cavity 16, and the length of the connecting cavity 16 is greater than that of the inner insertion sleeve 6. The purpose of this setting is that the quick connection air feed of being convenient for, and can break off the air supply when not using to and rubber retaining ring 18 and the rubber chock 17 that set up have good connection leakproofness prevent that gas leakage from causing the atmospheric pressure not enough.

In the embodiment, the piston ejection assembly comprises a first piston block 3 and a second piston block 9 which are arranged in a piston air cavity 14, wherein the top end of the second piston block 9 is connected with a jack post 10, and the top end of the first piston block 3 is fixedly connected with a pushing ball 4; a tension spring section 11 is connected between the first piston block 3 and the second piston block 9. The purpose that sets up like this has good flexibility ejecting effect, can avoid the mould surface to take place the damage, and adopts first piston block, the design of second piston block, can prevent that atmospheric pressure from being too big directly from ejecting the mould embryo.

The working principle of the utility model is as follows: as shown in fig. 4, the cylinder sealing base 1 and the metal cylinder 2 are assembled into the base of the plastic guide mold and the mold body, and when assembled, the dimensional error is required to be less than 0.1 mm; the metal air guide pipeline 5 passes through the air passage of the die body and is directly in threaded connection with the sealing threaded seat 13, and the outer sealing sleeve 7 is required to be installed at an air source to ensure the tightness of connection.

When the demolding operation is carried out, the inner sleeve 6 and the outer sleeve seal 7 are directly connected in a plugging mode, the conical air guide nozzle 15 is connected with the rubber plug block 17 in a plugging mode, compressed air is further delivered to the piston air cavity 14, air pressure is increased to push the second piston block 9 to move, when the ejector pin 10 contacts the first piston block 3, the first piston block 3 is driven to move together, the demolding operation is carried out through the pushing ball 4, after the demolding operation is completed, the outer electromagnetic control valve is used for converting, air in the piston air cavity 14 is extracted, and the first piston block 3 and the second piston block 9 are reset.

The utility model has good flexible ejection effect, can avoid damage to the surface of the die, and can prevent the die blank from being ejected directly due to excessive air pressure by adopting the design of the first piston block 3 and the second piston block 9; through interior cover 6, outer seal cover 7, toper air guide mouth 15, link cavity 16, rubber chock 17 and the rubber retaining ring 18 that are equipped with, have good butt joint connection effect, can be quick connect and carry out the air feed operation, improve the convenience of installation and guarantee the leakproofness of connection.

In the design stage of the metal cylinder 2, the length of the metal cylinder 2 needs to meet the reserved depth of the die body, and when the metal cylinder 2 is assembled, the top of the metal cylinder 2 is corresponding to and communicated with the die cavity, and the exceeding distance needs to be smaller than 0.001 mm.

The first piston block 3 and the second piston block 9 can slide smoothly inside the piston air cavity 14, but the first piston block 3 and the second piston block 9 cannot be separated from the piston air cavity 14 during the piston movement.

In the design stage of seal screw thread seat 13 and metal air guide pipeline 5, seal screw thread seat 13 and metal air guide pipeline 5 threaded connection length need with seal screw thread seat 13's length looks adaptation, threaded connection length is three quarters of seal screw thread seat 13 length, and metal air guide pipeline 5 when the assembly guide die body, its self protruding length outside the die body can adopt flexible rubber pipeline to connect, prevents like this that the spatial position does not correspond and causes unable phenomenon of connecting when assembling.

What is not described in detail in this specification is prior art known to those skilled in the art. The specific embodiments described herein are offered by way of example only to illustrate the spirit of the utility model. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the utility model or exceeding the scope of the utility model as defined in the accompanying claims.

Claims

1. The utility model provides a demoulding device for plastic mould, includes airtight base (1) of barrel and metal barrel (2), its characterized in that, the middle part and the metal barrel (2) fixed connection on the airtight base (1) top of barrel, metal barrel (2) middle part is equipped with piston air cavity (14), the internal connection of piston air cavity (14) has piston liftout subassembly, airtight case (12) are installed in the gas pocket department of metal barrel (2), the one end fixedly connected with seal screw thread seat (13) of airtight case (12), the one end threaded connection of seal screw thread seat (13) has metal air duct (5), the one end fixedly connected with quick-operation joint structure of metal air duct (5).

2. The demolding device for plastic molds according to claim 1, characterized in that the quick connecting joint structure comprises an inner insertion sleeve (6) and an outer sealing sleeve (7), wherein a rubber plug (17) is installed in the inner insertion sleeve (6), a connecting cavity (16) is formed in the middle of the outer sealing sleeve (7), a conical air guide nozzle (15) is installed in the connecting cavity (16), the conical air guide nozzle (15) is connected with the rubber plug (17) in an inserting mode, and a sealing interface (8) is fixedly arranged at one end of the conical air guide nozzle (15).

3. Demolding device for plastic molds according to claim 2, characterized in that the outer edge of the inner insert (6) is fixedly provided with a rubber retainer ring (18), the rubber retainer ring (18) being connected with the connecting cavity (16).

4. Demolding device for plastic molds according to claim 1, characterized in that said piston ejector assembly comprises a first piston block (3) and a second piston block (9) arranged inside a piston air cavity (14), the top end of said second piston block (9) is connected with a jack post (10), and the top end of said first piston block (3) is fixedly connected with a pushing ball (4).

5. Demolding device for plastic molds according to claim 4, characterized in that a tension spring section (11) is connected between the first piston block (3) and the second piston block (9).

6. Demolding device for plastic molds according to claim 2, characterized in that the length of said connecting cavity (16) is greater than the length of the inner insert (6).