CN215396564U

CN215396564U - Gas-assisted injection mold of high-finish injection molding part

Info

Publication number: CN215396564U
Application number: CN202121461127.5U
Authority: CN
Inventors: 李世有
Original assignee: Shenzhen Jiemeng Plastic Hardware Products Co ltd
Current assignee: Shenzhen Jiemeng Plastic Hardware Products Co ltd
Priority date: 2021-06-30
Filing date: 2021-06-30
Publication date: 2022-01-04
Anticipated expiration: 2031-06-30

Abstract

The utility model discloses a gas-assisted injection mold of a high-finish injection molding piece, which comprises a base, wherein two sides of the top end of the base are respectively and vertically fixed with a pillar, a bottom mold base is fixed at the top end of the base, a lower mold is arranged at the top end of the bottom mold base, a top mold base is arranged at the top end of the lower mold, and an injection molding opening is arranged at the top end of the top mold base. This gaseous supplementary injection mold of high finish injection molding is through carrying out the pressfitting or when separating between the lower mould on last mould and die block top at top die block bottom, slider fixed respectively on the support of top die block both sides can move upward or slide about orientationally in the inside groove in pillar top when moving down on the top die block drive, it is spacing to leading between last mould and the lower mould in pressfitting and separation process, reduce the collision damage to mould inner structure, make pressfitting and separation process more accurate, the problem of being not convenient for dismantle the change fast to inside mould has been solved.

Description

Gas-assisted injection mold of high-finish injection molding part

Technical Field

The utility model relates to the technical field of injection molds, in particular to a gas-assisted injection mold for a high-finish injection molding part.

Background

The mould is used for changing the shape of an article by utilizing the external force action of the physical state of a formed material so that a blank in the mould is a product with a specific shape and size, the principle of some gas-assisted injection molds is that high-pressure nitrogen is directly injected into a mold cavity of the mold to expand the plastic part in the mold cavity, gas is injected between the inner wall of the mold cavity and the plastic material, the advantages of keeping the back surface of the finished workpiece smooth and avoiding the sink and the like can be achieved, but the existing gas-assisted injection mold of some high-finish injection molding parts still has some defects in the using process, for example, during the use process, no measure is provided for facilitating the rapid disassembly and replacement of the inner die, and no measure is provided for facilitating the guiding and limiting during the die assembly, and a measure which is convenient for quickly ejecting the formed workpiece and taking off the workpiece is not provided.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a gas-assisted injection mold for high-finish injection molding parts, which aims to solve the problem of inconvenience in rapid disassembly and replacement of an internal mold in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a gaseous supplementary injection mold of high finish injection molding, includes the base, the both sides on base top are the vertical pillar that is fixed with respectively, the top of base is fixed with the die holder, and the top of die holder is provided with the lower mould, the top of lower mould is provided with the die holder, and the top of die holder is provided with the mouth of moulding plastics, the bottom of die holder is provided with the mould, and goes up the inside of mould one side and be provided with the injection air cock, the support is installed respectively to the both sides of die holder, the inside of lower mould transversely is provided with the horizontal pole, and the both sides of horizontal pole are fixed with the swivel nut respectively, the top of going up the mould and the bottom of lower mould are fixed with the fixture block respectively, the inside of die holder and die holder is provided with the draw-in groove respectively, the inside of die holder and die holder both sides is provided with logical groove respectively, and the inside that leads to the groove transversely is provided with the movable rod.

Preferably, one side of movable rod outside is provided with the locking groove, the both sides of top die holder and die holder are provided with the actuating lever respectively, and one side of actuating lever run through logical inside and with one side fixed connection of movable rod, first compression spring has been cup jointed to the outside of actuating lever one side, one side of first compression spring and one side fixed connection of movable rod, the opposite side of first compression spring and the one side fixed connection who leads to the inside of groove, the both sides on die holder top and the both sides of top die holder bottom are run through respectively and are provided with the locking lever, and the bottom mounting of locking lever has the locking piece, the second compression spring has been cup jointed to the outside of locking lever, and the bottom of second compression spring and the top fixed connection of locking piece, the inside intermediate position department of draw-in groove is fixed with the bottom piece, the inside intermediate position department of clamping block is provided with the spout.

Preferably, the external dimension of the clamping block is smaller than the internal dimension of the clamping groove, one side of the through groove penetrates through one side of the clamping block, and the outer diameter of the movable rod is smaller than the inner diameter of the through groove.

Preferably, a sliding block is fixed on one side of the support, an inner groove is formed in the top end of the support, and the sliding block is embedded in the inner groove.

Preferably, the brackets are symmetrically arranged about a vertical center line of the top die holder.

Preferably, the inside both sides of lower mould are provided with the guide way respectively, the inside both sides of bottom of lower mould vertical swing joint respectively have the screw rod, and the bottom of screw rod runs through the inside and the driven bevel gear of fixedly connected with of lower mould respectively, the horizontal swing joint in the inside bottom of lower mould has the connecting rod, and the outside both sides of connecting rod are fixed with the initiative bevel gear respectively, the inside one side of lower mould is provided with servo motor, and servo motor's output shaft passes through one side fixed connection of shaft coupling and connecting rod, the ejector pin has been welded respectively to the both sides on horizontal pole top, and the top of ejector pin is fixed with the kicking block, and the inside of lower mould is run through on the top of kicking block, the meshing is connected between driven bevel gear and the initiative bevel gear.

Preferably, the inner part of the screw sleeve is provided with an internal thread matched with the external thread of the screw rod.

Preferably, a limiting block is fixed on one side of the threaded sleeve and embedded in the guide groove.

Compared with the prior art, the utility model has the beneficial effects that: the gas-assisted injection mold for the high-finish injection molding part not only realizes the measure of conveniently and rapidly disassembling and replacing the internal mold, realizes the guide and the limit during the mold closing, but also realizes the convenience of rapidly ejecting the molded workpiece and facilitating the taking off;

(1) by arranging the sliding groove, the through groove, the clamping groove, the bottom block, the clamping block, the movable rod, the locking groove, the driving rod, the first compression spring, the second compression spring, the locking rod and the locking block, when the upper die and the lower die at the bottom end of the top die seat and the top end of the bottom die seat are replaced, the movable rod can be pulled out from the through groove in one side of the clamping block by respectively pulling the driving rod, the locking rod pushes out the locking block to be clamped into the locking groove in one side of the outer part of the movable rod by utilizing the second compression spring, the movable rod is locked in the through groove, the movable rods on two sides are respectively pulled out, the upper die and the lower die are pulled out from the inside of the clamping groove by utilizing the sliding groove in the clamping block for quick replacement, simultaneously, after the clamping block is clamped into the clamping groove in the installation, the locking rod is pulled outwards, the locking block at the bottom end is separated from the locking groove, the first compression spring in the through groove automatically pops the movable rod and is clamped into the inside of one side of the clamping block, locking and fixing the position of the clamping block;

(2) through the arrangement of the supports, the inner grooves and the sliding blocks, when the upper die at the bottom end of the top die base is pressed on or separated from the lower die at the top end of the bottom die base, the sliding blocks respectively fixed on the supports at the two sides of the top die base can directionally slide up and down in the inner groove at the top end of the support when the top die base drives the upper die to move up or down, and the upper die and the lower die are guided and limited in the pressing and separating processes, so that the collision damage to the internal structure of the die is reduced, and the pressing and separating processes are more accurate;

(3) through being provided with the swivel nut, the horizontal pole, the kicking block, the ejector pin, the guide way, servo motor, driven bevel gear, the screw rod, connecting rod and drive bevel gear, the work piece on lower mould top is after inside injection moulding of mould, can be through starting servo motor, it rotates to drive the connecting rod through the output shaft, the connecting rod rotates and drives two sets of drive bevel gear rotations, the drive bevel gear rotation that the meshing is connected with it drives the driven bevel gear rotation, driven bevel gear rotates and drives the screw rod rotation, the screw rod rotates the swivel nut that drives screwed connection with it and shifts up in the outside of screw rod, the horizontal pole shifts up the kicking block that drives the top and carries out quick ejecting release with the fashioned mould in lower mould top, be convenient for take off the work piece fast, the concurrent operation servo motor reversal can be withdrawed the kicking block.

Drawings

FIG. 1 is a schematic front sectional view of the present invention;

FIG. 2 is an enlarged partial cross-sectional view taken at A in FIG. 1 according to the present invention;

FIG. 3 is an enlarged structural view of the inner groove of the present invention;

FIG. 4 is an enlarged front view of the screw according to the present invention.

In the figure: 1. a base; 2. a pillar; 3. an injection nozzle; 4. a support; 5. a top die holder; 6. a chute; 7. an injection molding port; 8. an upper die; 9. a through groove; 10. a lower die; 11. a card slot; 12. a threaded sleeve; 13. a cross bar; 14. a bottom block; 15. a clamping block; 16. a bottom die holder; 17. a movable rod; 18. a locking groove; 19. a drive rod; 20. a first compression spring; 21. a second compression spring; 22. a locking lever; 23. a locking block; 24. an inner tank; 25. a slider; 26. a top block; 27. a top rod; 28. a guide groove; 29. a servo motor; 30. a driven bevel gear; 31. a screw; 32. a connecting rod; 33. a drive bevel gear.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1: referring to fig. 1-4, a gas-assisted injection mold for highly polished injection-molded parts comprises a base 1, pillars 2 are vertically fixed on two sides of the top end of the base 1, a base seat 16 is fixed on the top end of the base 1, a lower mold 10 is arranged on the top end of the base seat 16, a top mold seat 5 is arranged on the top end of the lower mold 10, an injection port 7 is arranged on the top end of the top mold seat 5, an upper mold 8 is arranged on the bottom end of the top mold seat 5, an injection nozzle 3 is arranged inside one side of the upper mold 8, supports 4 are arranged on two sides of the top mold seat 5, a cross rod 13 is transversely arranged inside the lower mold 10, screw sleeves 12 are fixed on two sides of the cross rod 13, fixture blocks 15 are fixed on the top end of the upper mold 8 and the bottom end of the lower mold 10, clamp grooves 11 are arranged inside the base seat 16 and the top mold seat 5, through grooves 9 are arranged inside two sides of the top mold seat 5 and the base seat 16, and a movable rod 17 is transversely arranged in the through groove 9;

a locking groove 18 is arranged on one side of the outside of the movable rod 17, driving rods 19 are respectively arranged on two sides of the top die holder 5 and the bottom die holder 16, one side of each driving rod 19 penetrates through the inside of the through groove 9 and is fixedly connected with one side of the movable rod 17, a first compression spring 20 is sleeved on the outside of one side of each driving rod 19, one side of each first compression spring 20 is fixedly connected with one side of the movable rod 17, the other side of each first compression spring 20 is fixedly connected with one side of the inside of the through groove 9, locking rods 22 are respectively arranged on two sides of the top end of the bottom die holder 16 and two sides of the bottom end of the top die holder 5 in a penetrating manner, a locking block 23 is fixed at the bottom end of each locking rod 22, a second compression spring 21 is sleeved on the outside of each locking rod 22, the bottom end of each second compression spring 21 is fixedly connected with the top end of each locking block 23, a bottom block 14 is fixed at the middle position inside the clamping groove 11, a sliding groove 6 is arranged at the middle position inside the clamping block 15, the external dimension of the clamping block 15 is smaller than the internal dimension of the clamping groove 11, one side of the through groove 9 penetrates to one side of the clamping block 15, and the outer diameter of the movable rod 17 is smaller than the inner diameter of the through groove 9;

specifically, as shown in fig. 1 and 2, when the upper mold 8 and the lower mold 10 at the bottom end of the top mold base 5 and the top end of the bottom mold base 16 are replaced, the movable rod 17 can be pulled out from the through groove 9 inside the fixture block 15 by pulling the driving rod 19, the locking rod 22 will push the locking block 23 out to the locking groove 18 clamped at the outside of the movable rod 17 by the second compression spring 21, the movable rod 17 is locked inside the through groove 9, the movable rods 17 at both sides are pulled out, the upper mold 8 and the lower mold 10 are pulled out from the inside of the fixture groove 11 by the sliding groove 6 inside the fixture block 15 for quick replacement, the fixture block 15 is clamped inside the fixture groove 11 during installation, the locking rod 22 is pulled outwards to disengage the bottom end locking block 23 from the locking groove 18, the first compression spring 20 inside the through groove 9 will automatically eject the movable rod 17 and clamp into the inside the fixture block 15, the position of the latch 15 is locked and fixed.

Example 2: a sliding block 25 is fixed on one side of the support 4, an inner groove 24 is formed in the top end of the support 2, the sliding block 25 is embedded in the inner groove 24, and the support 4 is symmetrically arranged relative to the vertical center line of the top die holder 5;

specifically, as shown in fig. 1 and 3, when the upper die 8 at the bottom of the top die holder 5 and the lower die 10 at the top of the bottom die holder 16 are pressed together or separated, the sliders 25 fixed to the supports 4 at the two sides of the top die holder 5 can slide up and down in the internal groove 24 inside the top of the pillar 2 when the top die holder 5 drives the upper die 8 to move up or down, and the upper die 8 and the lower die 10 are guided and limited in the pressing and separating processes, so that the collision damage to the internal structure of the die is reduced, and the pressing and separating processes are more accurate.

Example 3: two sides of the interior of the lower die 10 are respectively provided with a guide groove 28, two sides of the interior bottom of the lower die 10 are respectively vertically movably connected with a screw 31, the bottom end of the screw 31 respectively penetrates through the interior of the lower die 10 and is fixedly connected with a driven bevel gear 30, the bottom end of the interior of the lower die 10 is transversely movably connected with a connecting rod 32, two sides of the exterior of the connecting rod 32 are respectively fixed with a driving bevel gear 33, one side of the interior of the lower die 10 is provided with a servo motor 29, an output shaft of the servo motor 29 is fixedly connected with one side of the connecting rod 32 through a coupler, two sides of the top end of the cross rod 13 are respectively welded with a push rod 27, the top end of the push rod 27 is fixed with a top block 26, the top end of the top block 26 penetrates through the interior of the lower die 10, the driven bevel gear 30 is in meshed connection with the driving bevel gear 33, the interior of the threaded sleeve 12 is provided with an internal thread matched with the external thread of the screw 31, one side of the threaded sleeve 12 is fixed with a limiting block, the limiting block is embedded in the guide groove 28;

specifically, as shown in fig. 1 and 4, after the workpiece on the top end of the lower die 10 is injection molded inside the die, the servo motor 29 can be started, the output shaft drives the connecting rod 32 to rotate, the connecting rod 32 rotates to drive the two sets of driving bevel gears 33 to rotate, the driving bevel gears 33 rotate to drive the driven bevel gears 30 engaged with the driving bevel gears to rotate, the driven bevel gears 30 rotate to drive the screw rods 31 to rotate, the screw rods 31 rotate to drive the screw sleeves 12 screwed with the screw rods 31 to move upwards outside the screw rods 31, the cross rods 13 move upwards to drive the top blocks 26 on the top end to rapidly eject and push out the die formed on the top end of the lower die 10, the workpiece can be rapidly taken down, and the top blocks 26 can be retracted by operating the servo motor 29 to rotate reversely.

The working principle is as follows: when the utility model is used, molten plastic is led into a cavity formed between an upper die 8 and a lower die 10 through the inside of an injection port 7 after an injection nozzle 3 and a lower die 10 are pressed together, external high-pressure nitrogen is injected into the plastic which is plasticized and formed in the cavity through the injection nozzle 3 to perform auxiliary processing on a workpiece, the workpiece at the top end of the lower die 10 is subjected to injection molding in the die, a servo motor 29 is started, a connecting rod 32 is driven to rotate through an output shaft, the connecting rod 32 rotates to drive two groups of driving bevel gears 33 to rotate, the driving bevel gears 33 rotate to drive driven bevel gears 30 which are meshed and connected with the driving bevel gears 33 to rotate, the driven bevel gears 30 rotate to drive a screw rod 31 to rotate, the screw rod 31 rotates to drive a screw sleeve 12 which is connected with the screw rod 31 to move upwards outside the screw rod 31, and the cross rod 13 moves upwards to drive a top block 26 at the top end to rapidly eject and push out the die which is formed at the top end of the lower die 10, the workpiece can be conveniently and rapidly taken down, the top block 26 can be withdrawn by operating the servo motor 29 to rotate reversely, when the upper die 8 at the bottom end of the top die holder 5 and the lower die 10 at the top end of the bottom die holder 16 are pressed together or separated, the sliding blocks 25 respectively fixed on the brackets 4 at two sides of the top die holder 5 can directionally slide up and down in the inner groove 24 in the top end of the pillar 2 when the top die holder 5 drives the upper die 8 to move up or down, the guiding and limiting are carried out between the upper die 8 and the lower die 10 in the pressing and separating processes, the collision damage to the internal structure of the die is reduced, the pressing and separating processes are more accurate, and when the upper die 8 and the lower die 10 at the bottom end of the top die holder 5 and the top end of the bottom die holder 16 are replaced, the locking rod 22 can push the locking block 23 out of the locking groove 18 clamped in one side of the movable rod 17 by respectively pulling the driving rod 19, carry out the locking to movable rod 17 in the inside of logical groove 9, pull out the back respectively with the movable rod 17 of both sides, will go up mould 8 and lower mould 10 and utilize spout 6 of the inside of fixture block 15 to pull out from the inside of draw-in groove 11 and take off and carry out quick replacement, simultaneously when installing with fixture block 15 card income draw-in groove 11 inside back, outwards stimulate locking lever 22, make bottom locking piece 23 break away from locking groove 18, the inside compression spring 20 that leads to the groove 9 will pop out movable rod 17 automatically and the card is gone into the inside of fixture block 15 one side, it is fixed to lock the position of fixture block 15.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a gas-assisted injection mold of high finish injection molding, includes base (1), its characterized in that: the injection mold is characterized in that pillars (2) are vertically fixed on two sides of the top end of the base (1) respectively, a base seat (16) is fixed on the top end of the base (1), a lower mold (10) is arranged on the top end of the base seat (16), a top mold seat (5) is arranged on the top end of the lower mold (10), an injection molding port (7) is arranged on the top end of the top mold seat (5), an upper mold (8) is arranged on the bottom end of the top mold seat (5), an injection air nozzle (3) is arranged inside one side of the upper mold (8), supports (4) are arranged on two sides of the top mold seat (5) respectively, a cross rod (13) is transversely arranged inside the lower mold (10), threaded sleeves (12) are fixed on two sides of the cross rod (13) respectively, fixture blocks (15) are fixed on the top end of the upper mold (8) and the bottom end of the lower mold (10) respectively, clamping grooves (11) are arranged inside the base seat (16) and the top mold seat (5) respectively, the inner parts of the two sides of the top die base (5) and the bottom die base (16) are respectively provided with a through groove (9), and a movable rod (17) is transversely arranged in the through groove (9).

2. A gas-assisted injection mold for highly finished injection molded parts according to claim 1, wherein: one side of the outside of the movable rod (17) is provided with a locking groove (18), two sides of the top die base (5) and the bottom die base (16) are respectively provided with a driving rod (19), one side of the driving rod (19) penetrates through the inside of the through groove (9) and is fixedly connected with one side of the movable rod (17), a first compression spring (20) is sleeved on the outside of one side of the driving rod (19), one side of the first compression spring (20) is fixedly connected with one side of the movable rod (17), the other side of the first compression spring (20) is fixedly connected with one side of the inside of the through groove (9), two sides of the top end of the bottom die base (16) and two sides of the bottom end of the top die base (5) are respectively penetrated and provided with a locking rod (22), a locking block (23) is fixed at the bottom end of the locking rod (22), a second compression spring (21) is sleeved on the outside of the locking rod (22), and the bottom end of the second compression spring (21) is fixedly connected with the top end of the locking block (23), a bottom block (14) is fixed at the middle position inside the clamping groove (11), and a sliding groove (6) is arranged at the middle position inside the clamping block (15).

3. A gas-assisted injection mold for highly finished injection molded parts according to claim 1, wherein: the external dimension of the clamping block (15) is smaller than the internal dimension of the clamping groove (11), one side of the through groove (9) penetrates through one side of the clamping block (15), and the outer diameter of the movable rod (17) is smaller than the inner diameter of the through groove (9).

4. A gas-assisted injection mold for highly finished injection molded parts according to claim 1, wherein: a sliding block (25) is fixed on one side of the support (4), an inner groove (24) is formed in the top end of the support column (2), and the sliding block (25) is embedded in the inner groove (24).

5. A gas-assisted injection mold for highly finished injection molded parts according to claim 1, wherein: the supports (4) are symmetrically arranged relative to the vertical center line of the top die holder (5).

6. A gas-assisted injection mold for highly finished injection molded parts according to claim 1, wherein: guide grooves (28) are respectively arranged on two sides of the inner part of the lower die (10), a screw rod (31) is respectively and vertically movably connected to two sides of the inner bottom of the lower die (10), the bottom end of the screw rod (31) respectively penetrates through the inner part of the lower die (10) and is fixedly connected with a driven bevel gear (30), a connecting rod (32) is transversely and movably connected to the bottom end of the inner part of the lower die (10), driving bevel gears (33) are respectively fixed to two sides of the outer part of the connecting rod (32), a servo motor (29) is arranged on one side of the inner part of the lower die (10), an output shaft of the servo motor (29) is fixedly connected with one side of the connecting rod (32) through a coupler, ejector rods (27) are respectively welded to two sides of the top end of the cross rod (13), an ejector block (26) is fixed to the top end of the ejector rod (27), and the top end of the ejector block (26) penetrates through the inner part of the lower die (10), the driven bevel gear (30) is in meshed connection with the driving bevel gear (33).

7. A gas-assisted injection mold for highly finished injection molded parts according to claim 1, wherein: the interior of the screw sleeve (12) is provided with an internal thread matched with the external thread of the screw rod (31).

8. A gas-assisted injection mold for highly finished injection molded parts according to claim 1, wherein: a limiting block is fixed on one side of the threaded sleeve (12) and embedded in the guide groove (28).