CN216032198U

CN216032198U - Spring cavity type injection mold

Info

Publication number: CN216032198U
Application number: CN202122669924.9U
Authority: CN
Inventors: 夏朝南
Original assignee: Kunshan Xinsixiang Precision Mould Technology Co ltd
Current assignee: Kunshan Xinsixiang Precision Mould Technology Co ltd
Priority date: 2021-11-03
Filing date: 2021-11-03
Publication date: 2022-03-15
Anticipated expiration: 2031-11-03

Abstract

The utility model provides a spring cavity type injection mold. The spring cavity type injection mold comprises a base; the die holder is fixedly arranged at the top of the base; the die cavity is formed in the top of the die holder; the lower die is arranged on the inner wall of the die cavity; the two positioning grooves are formed in the bottom of the lower die; the two ejector rods are slidably mounted on the inner wall of the bottom of the die cavity, and the top ends of the two ejector rods extend into the two positioning grooves respectively; and the two contact plates are fixedly arranged at the top ends of the two ejector rods respectively. The spring cavity type injection mold provided by the utility model has the advantages of simplicity in operation, convenience in use and replacement and capability of improving the working efficiency.

Description

Spring cavity type injection mold

Technical Field

The utility model relates to the technical field of injection molds, in particular to a spring cavity type injection mold.

Background

An injection mold generally refers to injection molding, which is a molding method of injection and molding, in which a plastic material completely melted by screw stirring is injected into a mold cavity at a certain temperature with high pressure, and a molded product is obtained after cooling and solidification.

However, the conventional spring cavity injection mold is usually designed to be non-detachable, and when products of different models need to be injected, the whole set of the injection mold needs to be detached, so that the operation is troublesome, and the work efficiency is reduced.

Therefore, there is a need to provide a new spring cavity type injection mold to solve the above technical problems.

SUMMERY OF THE UTILITY MODEL

The utility model solves the technical problem of providing the spring cavity type injection mold which is simple to operate, convenient to use and replace and capable of improving the working efficiency.

In order to solve the technical problem, the spring cavity type injection mold provided by the utility model comprises: a base; the die holder is fixedly arranged at the top of the base; the die cavity is formed in the top of the die holder; the lower die is arranged on the inner wall of the die cavity; the two positioning grooves are formed in the bottom of the lower die; the two ejector rods are slidably mounted on the inner wall of the bottom of the die cavity, and the top ends of the two ejector rods extend into the two positioning grooves respectively; the two contact plates are fixedly arranged at the top ends of the two ejector rods respectively; the two first springs are movably sleeved on the two ejector rods respectively, the top ends of the two first springs are fixedly connected with the bottoms of the two contact plates respectively, and the bottom ends of the two first springs are fixedly connected with the inner wall of the bottom of the die cavity; the two grooves are respectively formed in the inner walls of the two sides of the die cavity; the two sliding rods are respectively installed on the outer walls of the two sides of the die holder in a sliding mode, and one ends, close to each other, of the two sliding rods respectively extend into the two grooves; the two clamping blocks are respectively installed on the inner walls of the two grooves in a sliding mode, and the outer wall of one side, far away from each other, of each clamping block is respectively fixedly connected with the two sliding rods; the two second springs are movably sleeved on the two sliding rods respectively, one ends, close to each other, of the two second springs are fixedly connected with the outer wall of one side of each of the two clamping blocks respectively, and the outer wall of one side, far away from each other, of the two second springs is fixedly connected with the inner walls of the two grooves respectively; the mounting plate is arranged above the die holder; the upper die is fixedly installed at the bottom of the mounting plate and matched with the lower die.

Preferably, go up the mould with still be provided with same demoulding mechanism on the mounting panel, demoulding mechanism includes ring pipe, air exhauster, exhaust column and exhaust pipe, the ring pipe fixed sleeve is established go up on the mould, air exhauster fixed mounting be in the top of mounting panel, exhaust column fixed mounting be in on the suction opening of air exhauster, the exhaust column is kept away from the one end of air exhauster with ring pipe fixed connection, exhaust pipe fixed mounting be in on the air exit of air exhauster.

Preferably, a plurality of suckers are fixedly arranged at the bottom of the ring pipe.

Preferably, there are four gag lever posts that are the rectangular distribution, four at the top slidable mounting of mounting panel the bottom of gag lever post all with the top fixed connection of base, four fixed cover is equipped with the end plate on the gag lever post, four equal movable sleeve is equipped with compression spring, four on the gag lever post compression spring's top all with the bottom fixed connection of mounting panel, four compression spring's bottom all with four the top fixed connection of end plate.

Preferably, the outer walls of two sides of the lower die are respectively provided with a clamping groove, and the outer wall of one side of each clamping block, which is close to each other, extends into the two clamping grooves and is matched with the inner walls of the two clamping grooves.

Preferably, two avoiding grooves are formed in the inner wall of the bottom of the die cavity, two sliding grooves are formed in the inner walls of the two sides of each avoiding groove respectively, sliding blocks are fixedly mounted on the outer walls of the two sides of the ejector rod respectively, and one outer wall of each sliding block extends into each sliding groove and is connected with the inner wall of each sliding groove in a sliding mode.

Preferably, injection molding openings are formed in the bottoms of the base, the die holder and the lower die, and the three injection molding openings are communicated.

Compared with the prior art, the spring cavity type injection mold provided by the utility model has the following beneficial effects:

the utility model provides a spring cavity type injection mold, which is characterized in that a lower mold is detachably arranged, only two sliding rods need to be pulled in opposite directions, the lower mold can be jacked up under the action of the elastic force of a first spring, so that the lower mold can be quickly disassembled, when the lower mold with different types is replaced, the lower mold only needs to be clamped into a mold groove, the lower mold can be quickly fixed under the action of two clamping blocks, the work efficiency is improved, the operation is simple, the demolding work of an injection molding piece can be facilitated under the action of a plurality of suckers, the injection molding piece is prevented from being adhered to the mold groove, and the production efficiency is improved.

Drawings

FIG. 1 is a schematic structural diagram of a spring cavity injection mold according to a preferred embodiment of the present invention;

FIG. 2 is an enlarged view of portion A of FIG. 1;

fig. 3 is a schematic top view of a spring cavity injection mold according to a preferred embodiment of the present invention.

Reference numbers in the figures: 1. a base; 2. a die holder; 3. a die cavity; 4. a lower die; 5. positioning a groove; 6. a top rod; 7. a contact plate; 8. a first spring; 9. a groove; 10. a slide bar; 11. a clamping block; 12. a second spring; 13. mounting a plate; 14. an upper die; 15. a ring pipe; 16. an exhaust fan; 17. an exhaust pipe; 18. an exhaust pipe.

Detailed Description

The utility model is further described with reference to the following figures and embodiments.

Referring to fig. 1-3, fig. 1 is a schematic structural diagram of a spring cavity injection mold according to a preferred embodiment of the present invention; FIG. 2 is an enlarged view of portion A of FIG. 1; fig. 3 is a schematic top view of a spring cavity injection mold according to a preferred embodiment of the present invention. Spring die cavity formula injection mold includes: a base 1; the die holder 2 is fixedly arranged at the top of the base 1; the die cavity 3 is formed in the top of the die holder 2; a lower mold 4, wherein the lower mold 4 is arranged on the inner wall of the mold cavity 3; the two positioning grooves 5 are formed in the bottom of the lower die 4; the two ejector rods 6 are arranged on the inner wall of the bottom of the die cavity 3 in a sliding mode, and the top ends of the two ejector rods 6 extend into the two positioning grooves 5 respectively; the two ejector rods 6 are rectangular, so that the ejector rods are prevented from rotating in the die cavity 3 and are kept to move vertically all the time, and the two contact plates 7 are fixedly arranged at the top ends of the two ejector rods 6 respectively; the two first springs 8 are movably sleeved on the two ejector rods 6 respectively, the top ends of the two first springs 8 are fixedly connected with the bottoms of the two contact plates 7 respectively, and the bottom ends of the two first springs 8 are fixedly connected with the inner wall of the bottom of the die cavity 3; under the elastic force action of the two first springs 8, the lower die 4 is ejected out, the lower die 4 is convenient to take, and the two grooves 9 are formed in the inner walls of the two sides of the die cavity 3 respectively; the two sliding rods 10 are respectively installed on the outer walls of the two sides of the die holder 2 in a sliding mode, and one ends, close to each other, of the two sliding rods 10 extend into the two grooves 9 respectively; the two slide bars 10 are rectangular, so that the slide bars are prevented from rotating on the die holder 2, the two fixture blocks 11 are respectively and slidably mounted on the inner walls of the two grooves 9, and the outer wall of one side, far away from each other, of each fixture block 11 is respectively and fixedly connected with the two slide bars 10; the outer walls of the two clamping blocks 11 at the sides close to each other are respectively provided with a cambered surface, a lower die 4 can be conveniently clamped into the die cavity 3 under the action of the cambered surfaces, the two second springs 12 are movably sleeved on the two slide bars 10 respectively, the ends, close to each other, of the two second springs 12 are fixedly connected with the outer walls of one sides of the two clamping blocks 11 respectively, and the outer walls of the two second springs 12 at the sides far away from each other are fixedly connected with the inner walls of the two grooves 9 respectively; under the elastic force action of the two second springs 12, the two clamping blocks 11 are conveniently clamped into the corresponding clamping grooves, so that the lower die 4 is conveniently fixed, and the mounting plate 13 is arranged above the die holder 2; the top of mounting panel 13 is fixed with the installed part, conveniently with mounting panel 13 and injection molding machine fixed connection, goes up mould 14, go up mould 14 fixed mounting in the bottom of mounting panel 13, go up mould 14 with lower mould 4 looks adaptation.

In order to facilitate demolding, avoid the injection molding to glue in bed die 4, go up the mould with still be provided with same demoulding mechanism on the mounting panel, demoulding mechanism includes ring canal 15, air exhauster 16, exhaust column 17 and exhaust pipe 18, ring canal 15 is fixed to be established fixed cover is in go up on the mould 14, air exhauster 16 fixed mounting be in mounting panel 13's top can absorb the gas in the ring canal 15 through the air exhauster 16 that sets up, conveniently makes the sucking disc on the ring canal 15 fix the injection molding 17 fixed mounting is in on the suction opening of air exhauster 16, exhaust column 17 keeps away from exhaust column 16's one end with ring canal 15 fixed connection, exhaust pipe 18 fixed mounting is in on the air exit of air exhauster 16.

In order to suck and fix the injection molding piece under the action of pressure, a plurality of suckers are fixedly arranged at the bottom of the ring pipe 15.

In order to avoid the phenomenon of the deviation of the upper die 14, the upper die plays a role in limiting the upper die, and the production quality is improved simultaneously, four limiting rods distributed in a rectangular shape are slidably mounted at the top of the mounting plate 13, four the bottom of each limiting rod is all connected with the top of the base 1, four the upper fixing sleeve of each limiting rod is provided with an end plate and four compression springs and four the top of each compression spring is all connected with the bottom of the mounting plate 13, four the bottom of each compression spring is connected with four the top of each end plate in a fixed mode.

In order to fix the lower die 4 conveniently, the lower die 4 of different models is changed conveniently simultaneously, the draw-in groove has been seted up respectively on the both sides outer wall of lower die 4, two one side outer wall that the fixture block 11 is close to each other extends to two respectively in the draw-in groove and with two the inner wall looks adaptation of draw-in groove.

In order to avoid two ejector pins 6 to drop, play the spacing effect thereof, set up two on the bottom inner wall of die cavity 3 and dodge the groove, two dodge and seted up the spout on the both sides inner wall in groove respectively, two respectively fixed mounting has the slider on the both sides outer wall of ejector pin 6, one side outer wall of slider extends to in the spout and with the inner wall sliding connection of spout.

In order to input raw materials into the lower die 4 conveniently, injection molding openings are formed in the bottoms of the base 1, the die holder 2 and the lower die 4, and the three injection molding openings are communicated.

The working principle of the spring cavity type injection mold provided by the utility model is as follows:

in an initial state, the two first springs 8 are in a compressed state and store certain elastic potential energy, when the device is used, the device is installed on an injection molding machine, a pipeline on an external material conveyor is fixedly connected to an injection port, when injection molding is needed, the material conveyor conveys materials to the injection port, then raw materials in the injection port enter a lower die 4, then the mounting plate 13 moves downwards, the mounting plate 13 drives the upper die 14 to move downwards, the limiting effect on the upper die 14 can be achieved under the action of the four limiting rods, the offset phenomenon is avoided, meanwhile, the four compression springs are in a compressed state and store certain elastic potential energy, the buffering effect on the upper die 14 is achieved under the elastic force effect of the four compression springs, the processing quality of an injection molding piece is improved, the upper die 14 extrudes the lower die 4, the processing of the injection molding piece is achieved, and after the extrusion is completed, starting an exhaust fan 16, the exhaust fan 16 extracting gas in the ring pipe 15 through an exhaust pipe 17, further sucking and fixing the injection molding piece under the action of a plurality of suckers, then enabling a mounting plate 13 to move upwards, thereby carrying out demolding work on the injection molding piece in the lower mold 4, facilitating demolding and avoiding the adhesion phenomenon, when injection molding pieces of different types are required, replacing the lower mold 4, pulling two sliding rods 10 in opposite directions, further enabling the two sliding rods 10 to drive two clamping blocks 11 to move backwards, enabling the two clamping blocks 11 to withdraw from the two clamping grooves and extrude two second springs 12, enabling the clamping blocks to store certain elastic potential energy, simultaneously under the elastic force action of the two first springs 8, enabling the two ejector rods 6 to drive the two contact plates 7 to jack up the lower mold 4, thereby taking the lower mold 4 out of the mold groove 3, then taking the lower mold 4 of the corresponding type and clamping the lower mold 4 into the mold groove 3, and then lower mould 4 extrudes two fixture blocks 11, make it enter into two recesses 9 and make two second springs 12 be compression state, store certain elastic potential energy, continue to promote lower mould 4 downwards, make two constant head tank 5 cards on two contact plates 7, and then two contact plates 7 drive two ejector pins 6 downstream and extrude two first springs 8, make it store certain elastic potential energy, this moment under the elastic force of two second springs 12, two fixture blocks 11 cards are gone into in the draw-in groove of lower mould 4, thereby realize the quick fixed work to lower mould 4, then tear corresponding cope match 14 down, make it and lower mould 4 looks adaptation, thereby work efficiency has been improved.

the utility model provides a spring cavity type injection mold, which is characterized in that a lower mold 4 is detachably arranged, only two sliding rods 10 are needed to be pulled in opposite directions, the lower mold 4 can be jacked up under the action of the elastic force of a first spring 8, so that the lower mold 4 can be quickly detached, when the lower molds 4 of different types are replaced, the lower mold 4 only needs to be clamped into a mold groove 3, the lower mold 4 can be quickly fixed under the action of two clamping blocks 11, the working efficiency is improved, the operation is simple, the demolding work of an injection molding piece can be facilitated under the action of a plurality of suckers, the injection molding piece is prevented from being adhered to the mold groove 3, and the production efficiency is improved.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. The utility model provides a spring cavity formula injection mold which characterized in that includes:

a base;

the die holder is fixedly arranged at the top of the base;

the die cavity is formed in the top of the die holder;

the lower die is arranged on the inner wall of the die cavity;

the two positioning grooves are formed in the bottom of the lower die;

the two ejector rods are slidably mounted on the inner wall of the bottom of the die cavity, and the top ends of the two ejector rods extend into the two positioning grooves respectively;

the two contact plates are fixedly arranged at the top ends of the two ejector rods respectively;

the two first springs are movably sleeved on the two ejector rods respectively, the top ends of the two first springs are fixedly connected with the bottoms of the two contact plates respectively, and the bottom ends of the two first springs are fixedly connected with the inner wall of the bottom of the die cavity;

the two grooves are respectively formed in the inner walls of the two sides of the die cavity;

the two sliding rods are respectively installed on the outer walls of the two sides of the die holder in a sliding mode, and one ends, close to each other, of the two sliding rods respectively extend into the two grooves;

the two clamping blocks are respectively installed on the inner walls of the two grooves in a sliding mode, and the outer wall of one side, far away from each other, of each clamping block is respectively fixedly connected with the two sliding rods;

the two second springs are movably sleeved on the two sliding rods respectively, one ends, close to each other, of the two second springs are fixedly connected with the outer wall of one side of each of the two clamping blocks respectively, and the outer wall of one side, far away from each other, of the two second springs is fixedly connected with the inner walls of the two grooves respectively;

the mounting plate is arranged above the die holder;

the upper die is fixedly installed at the bottom of the mounting plate and matched with the lower die.

2. The spring cavity type injection mold according to claim 1, wherein the upper mold and the mounting plate are further provided with a same demolding mechanism, the demolding mechanism comprises an annular pipe, an exhaust fan, an exhaust pipe and an exhaust pipe, the annular pipe is fixedly sleeved on the upper mold, the exhaust fan is fixedly installed at the top of the mounting plate, the exhaust pipe is fixedly installed on an exhaust opening of the exhaust fan, one end of the exhaust pipe, far away from the exhaust fan, is fixedly connected with the annular pipe, and the exhaust pipe is fixedly installed on an exhaust opening of the exhaust fan.

3. The spring cavity injection mold of claim 2, wherein a plurality of suction cups are fixedly mounted to a bottom of the collar.

4. The spring cavity type injection mold according to claim 1, wherein four rectangular spacing rods are slidably mounted on the top of the mounting plate, the bottom ends of the four spacing rods are fixedly connected with the top of the base, an end plate is fixedly sleeved on the four spacing rods, compression springs are movably sleeved on the four spacing rods, the top ends of the four compression springs are fixedly connected with the bottom of the mounting plate, and the bottom ends of the four compression springs are fixedly connected with the tops of the four end plates.

5. The spring cavity type injection mold according to claim 1, wherein the outer walls of two sides of the lower mold are respectively provided with a clamping groove, and the outer wall of one side of the two clamping blocks, which is close to each other, extends into the two clamping grooves and is matched with the inner walls of the two clamping grooves.

6. The spring cavity type injection mold according to claim 1, wherein two avoiding grooves are formed in the inner wall of the bottom of the mold cavity, sliding grooves are formed in the inner walls of the two sides of the two avoiding grooves, sliding blocks are fixedly mounted on the outer walls of the two sides of the two ejector rods, and one outer wall of each sliding block extends into the corresponding sliding groove and is connected with the inner wall of the corresponding sliding groove in a sliding manner.

7. The spring cavity type injection mold according to claim 1, wherein injection molding openings are formed in the base, the mold base and the bottom of the lower mold, and the three injection molding openings are communicated with each other.