CN219445941U - Compression-resistant plastic mold - Google Patents

Abstract

The utility model relates to a compression-resistant plastic mold, which comprises a base, a lower mold and an upper mold, wherein a guide column is arranged between the lower mold and the upper mold, one side of the upper mold is fixedly connected with a fixed ring, the inside of the fixed ring is fixedly connected with a piston rod, one side of the lower mold is fixedly connected with a U-shaped pipe below the piston rod, and the bottom end of the piston rod is in sliding connection with the inner wall of one side of the top end of the U-shaped pipe.

Description

Compression-resistant plastic mold

Technical Field

The utility model relates to the technical field of compression-resistant plastic molds, in particular to a compression-resistant plastic mold.

Background

With the rapid development and general use of the plastic industry and the continuous improvement of engineering plastics in terms of strength, precision, etc., the application range of plastic products is also expanding, for example: the proportion of plastic products is rapidly increased in the fields of household appliances, instruments and meters, building equipment, automobile industry, daily hardware and the like, a reasonably designed plastic part can often replace a plurality of traditional metal parts, the plastic trend of industrial products and daily products is continuously increased, a plastic mold is a short name of a combined mold for compression molding, extrusion molding, injection molding, blow molding and low foaming molding, and the coordination change of a mold convex mold, a mold concave mold and an auxiliary molding system can process a series of plastic parts with different shapes and different sizes.

Through retrieval, the patent with the Chinese patent application number of CN201921883137.0 discloses a compression-resistant plastic mold, which comprises a male mold and a female mold, wherein the male mold is positioned right above the female mold, a forming cavity is formed in the top surface of the female mold, and the compression-resistant plastic mold further comprises a male mold base, a female mold base and a bottom plate; the bottom plate is positioned right below the female die, and the female die seat is fixed between the female die and the bottom plate; an ejection assembly is arranged on the inner sides of the two die holders, and a driving mechanism for driving the ejection assembly to act is arranged on the outer wall of the die holder; a flexible buffer cushion is adhered and fixed on the top surface of the female die; according to the plastic mold, the compression resistance of the mold is greatly improved through the flexible buffer cushion, the buffer post and the buffer spring, the service life of the mold is prolonged, the driving assembly can drive the ejector plate to reciprocate up and down, in the process of lower mold, the driving assembly drives the ejector plate to move up, the plastic part is ejected by the ejector rod, and the ejection is convenient and stable, so that the structural integrity of the plastic part can be effectively ensured.

The device utilizes the structures such as the spring, the buffer column and the buffer cushion to be matched with each other so as to slow down the impact generated when the female die is extruded by the male die, but the spring has a certain elastic limit, the elastic limit is gradually reduced under repeated extrusion, and meanwhile, the buffer column and the buffer cushion are worn along with repeated die assembly.

Disclosure of Invention

The utility model aims to solve the defects in the prior art and provides a compression-resistant plastic mold.

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

the utility model provides a resistance to compression type plastic mould, includes the base, lower mould and last mould, be equipped with the guide post between lower mould and the last mould, go up mould one side fixedly connected with solid fixed ring, the inside fixedly connected with piston rod of gu fixed ring, lower mould one side is in the below department fixedly connected with U-shaped pipe of piston rod, piston rod bottom and U-shaped pipe top one side inner wall sliding connection, the inside buffer that is equipped with of U-shaped pipe, U-shaped pipe top fixedly connected with separation blade, separation blade top fixedly connected with buffer chamber, a plurality of toper through-hole has been seted up to the separation blade inside.

Further, the baffle is fixedly connected with a connecting frame above the conical through hole.

Furthermore, a blocking ball is arranged in the connecting frame.

Furthermore, a connecting rope is arranged between the blocking ball and the connecting frame, and a gap still exists between the blocking ball and the conical through hole under the state that the connecting rope naturally hangs down.

Further, the top end of the upper die is provided with an injection molding pipe.

Further, a plurality of strip-shaped heat dissipation grooves are formed in the outer portion of the lower die.

The beneficial effects of the utility model are as follows:

1. through setting up the U-shaped pipe, the buffer solution, toper through-hole and separation blade, when the compound die, go up the mould and drive the piston rod and move down and move towards the lower mould, the inside buffer solution liquid column of piston rod bottom extrusion U-shaped pipe this moment, buffer solution liquid column other end rises, because the separation blade blocks, the flow size that buffer solution liquid column got into the buffer chamber inside has been reduced, the resistance that receives when the piston rod removes this moment increases, the damping that receives increases when going up the mould compound die, and then the impact force size of lower mould surface when the compound die receives the upper mould bottom, when having avoided using the spring spare, because too frequent compound die leads to the condition emergence that life reduces.

2. Through setting up the check ball, when the buffer liquid column gets into the cushion chamber inside through the toper through-hole, the buffer liquid is through the impact check ball behind the toper through-hole, drives the check ball and rocks, has reduced the buffer liquid by the kinetic energy behind the extrusion back towards out the toper through-hole, the check ball has certain shielding effect simultaneously, when having further improved the damping effect of device, also avoided the buffer liquid to dash behind the toper through-hole of department, because noise and the impact that the buffer chamber inner wall was driven are hit to the liquid column.

3. Through setting up the bar heat dissipation groove, when the device compound die and wait for inside plastic part shaping, the heat transfer area of lower mould and outside air has been increased to the bar heat dissipation groove to further improved the radiating efficiency of device, improved plastic part fashioned efficiency.

Drawings

Fig. 1 is a front view of a compression-resistant plastic mold according to embodiment 1;

fig. 2 is a front cross-sectional view of a U-shaped tube of a compression-resistant plastic mold according to embodiment 1;

fig. 3 is a front view of a strip-shaped heat sink of a compression-resistant plastic mold according to embodiment 2.

In the figure: 1-base, 2-lower mould, 3-guide post, 4-upper mould, 5-injection molding pipe, 6-solid fixed ring, 7-piston rod, 8-U-shaped pipe, 9-buffer chamber, 10-separation blade, 11-buffer, 12-toper through-hole, 13-link, 14-check ball, 15-bar heat dissipation groove.

Detailed Description

In order to further describe the technical means and effects adopted by the present utility model for achieving the intended purpose, the following detailed description will refer to the specific implementation, structure, characteristics and effects according to the present utility model with reference to the accompanying drawings and preferred embodiments.

Example 1

Referring to fig. 1-2, a resistance to compression type plastic mould, including base 1, lower mould 2 and last mould 4, be equipped with guide post 3 between lower mould 2 and the last mould 4, go up mould 4 one side fixedly connected with solid fixed ring 6, gu fixed ring 6 inside fixedly connected with piston rod 7, lower mould 2 one side is in the below department fixedly connected with U-shaped pipe 8 of piston rod 7, piston rod 7 bottom and U-shaped pipe 8 top one side inner wall sliding connection, U-shaped pipe 8 inside is equipped with buffer solution 11, U-shaped pipe 8 top fixedly connected with separation blade 10, separation blade 10 top fixedly connected with buffer chamber 9, a plurality of toper through-hole 12 has been seted up to separation blade 10 inside, and when the compound die was in the time, go up mould 4 and drive piston rod 7 down and move towards lower mould 2, the inside buffer solution 11 liquid column of piston rod 7 bottom extrusion U-shaped pipe 8 at this moment, and the buffer solution 11 liquid column other end is gone up this moment, because the baffle 10 blocks, has reduced the flow size that buffer solution 11 liquid column got into buffer chamber 9 inside, and has received when the increase in the time, and has received the resistance when the mould 7 moves, has received the buffer solution 4 when having received the increase in the time and has received the die clamping force when the die, has avoided the frequent die clamping to receive the life-stop 2 to receive the side when the die to receive the increase and has more frequent die to receive the life-stop spring when the condition to take place.

The baffle plate 10 is fixedly connected with a connecting frame 13 above the conical through hole 12, a baffle ball 14 is arranged inside the connecting frame 13, a connecting rope is arranged between the baffle ball 14 and the connecting frame 13, an injection molding pipe 5 is arranged at the top end of the upper die 4, when a buffer liquid column enters the buffer cavity 9 through the conical through hole, the buffer liquid 11 impacts the baffle ball through the conical through hole 12 to drive the baffle ball 14 to shake, kinetic energy of the buffer liquid 11 after being extruded to punch the conical through hole 12 is reduced, meanwhile, the baffle ball 14 has a certain shielding effect, the damping effect of the device is further improved, and noise and impact caused by impact of the buffer liquid 11 on the inner wall of the buffer cavity after the buffer liquid column impacts the conical through hole are avoided.

Working principle: when the die is assembled, the upper die 4 drives the piston rod 7 to move downwards and move towards the lower die 2, at the moment, the bottom end of the piston rod 7 extrudes a buffer liquid 11 liquid column in the U-shaped pipe 8, the other end of the buffer liquid 11 liquid column rises, the flow of the buffer liquid 11 liquid column entering the buffer cavity 9 is reduced due to the blocking of the baffle plate 10, the resistance received when the piston rod 7 moves is increased, the damping received when the upper die 4 is assembled is increased, the impact force received by the bottom end of the upper die 4 on the surface of the lower die 2 during the die assembly is further buffered, and the condition that the service life is reduced due to the too frequent die assembly is avoided when a spring piece is used.

When the buffer liquid column enters the buffer cavity 9 through the conical through hole, the buffer liquid 11 impacts the baffle ball after passing through the conical through hole 12, the baffle ball 14 is driven to shake, the kinetic energy of the buffer liquid 11 after being extruded and punched out of the conical through hole 12 is reduced, meanwhile, the baffle ball 14 has a certain shielding effect, the damping effect of the device is further improved, and meanwhile, noise and impact caused by the fact that the buffer liquid column impacts the conical through hole at the position where the buffer liquid 11 is punched are avoided.

Example 2

Referring to fig. 3, in this embodiment, in order to increase the practicality of the device, a plurality of strip-shaped heat dissipation grooves 15 are formed on the outer portion of the lower die 2, and when the device is closed and the inner plastic part is waiting for molding, the heat exchange area between the lower die 2 and the outside air is increased by the strip-shaped heat dissipation grooves 15, so that the heat dissipation efficiency of the device is further improved, and the molding efficiency of the plastic part is improved.

Working principle: when the die is assembled, the upper die 4 drives the piston rod 7 to move downwards and move towards the lower die 2, at the moment, the bottom end of the piston rod 7 extrudes a buffer liquid 11 liquid column in the U-shaped pipe 8, the other end of the buffer liquid 11 liquid column rises, the flow of the buffer liquid 11 liquid column entering the buffer cavity 9 is reduced due to the blocking of the baffle plate 10, the resistance received when the piston rod 7 moves is increased, the damping received when the upper die 4 is assembled is increased, the impact force received by the bottom end of the upper die 4 on the surface of the lower die 2 during the die assembly is further buffered, and the condition that the service life is reduced due to the too frequent die assembly is avoided when a spring piece is used.

When the buffer liquid column enters the buffer cavity 9 through the conical through hole, the buffer liquid 11 impacts the baffle ball after passing through the conical through hole 12, the baffle ball 14 is driven to shake, the kinetic energy of the buffer liquid 11 after being extruded and punched out of the conical through hole 12 is reduced, meanwhile, the baffle ball 14 has a certain shielding effect, the damping effect of the device is further improved, and meanwhile, noise and impact caused by the fact that the buffer liquid column impacts the conical through hole at the position where the buffer liquid 11 is punched are avoided.

When the device is assembled and the internal plastic part is waited for forming, the strip-shaped heat dissipation groove 15 increases the heat exchange area of the lower die 2 and the external air, so that the heat dissipation efficiency of the device is further improved, and the efficiency of plastic part forming is improved.

While the present utility model has been described in terms of preferred embodiments, it should be understood that the present utility model is not limited to the preferred embodiments, but is intended to be limited to the specific embodiments disclosed herein, and that any person skilled in the art may make various changes or modifications to the embodiments without departing from the scope of the present utility model, and any modification, equivalent and variation to the embodiments described above according to the technical matter of the present utility model may still fall within the scope of the present utility model, and at the same time, all the standard parts used in the present utility model may be purchased from the market, all the special parts may be customized according to the descriptions of the specification and the drawings, all the specific connection modes of the parts may be conventional means such as bolt rivets and welding, all the mechanical, part and equipment may be conventional types in the prior art, and all the connection modes may be conventional in the prior art, which are not described in detail herein.

Claims (6)

1. The utility model provides a resistance to compression type plastic mould, includes base (1), lower mould (2) and last mould (4), be equipped with guide post (3) between lower mould (2) and the last mould (4), a serial communication port, go up mould (4) one side fixedly connected with solid fixed ring (6), gu fixed ring (6) inside fixedly connected with piston rod (7), the below department fixedly connected with U-shaped pipe (8) of lower mould (2) one side in piston rod (7), piston rod (7) bottom and U-shaped pipe (8) top one side inner wall sliding connection, U-shaped pipe (8) inside is equipped with buffer (11), U-shaped pipe (8) top fixedly connected with separation blade (10), separation blade (10) top fixedly connected with buffer chamber (9), a plurality of toper through-hole (12) have been seted up to separation blade (10) inside.

2. The compression-resistant plastic mold according to claim 1, wherein the baffle (10) is fixedly connected with a connecting frame (13) above the conical through hole (12).

3. A compression-resistant plastic mould according to claim 2, characterized in that the inside of the connecting frame (13) is provided with a stop ball (14).

4. A compression-resistant plastic mould according to claim 3, characterized in that a connecting rope is arranged between the stop ball (14) and the connecting frame (13).

5. The compression-resistant plastic mold according to claim 4, wherein the top end of the upper mold (4) is provided with an injection molding tube (5).

6. The compression-resistant plastic mold according to claim 5, wherein a plurality of strip-shaped heat dissipation grooves (15) are formed in the outer portion of the lower mold (2).