CN213260854U

CN213260854U - Injection mold with automatic cutout mechanism

Info

Publication number: CN213260854U
Application number: CN202022176370.4U
Authority: CN
Inventors: 孟光明; 张含; 陈向辉
Original assignee: Changsha Longsheng Plastics Co ltd
Current assignee: Changsha Longsheng Plastics Co ltd
Priority date: 2020-09-28
Filing date: 2020-09-28
Publication date: 2021-05-25
Anticipated expiration: 2030-09-28

Abstract

The utility model relates to an injection mold with automatic shutdown mechanism belongs to injection mold technical field, and it includes mould and lower mould, go up mould and lower mould and mutually support and form the die cavity, the inside goods that form of die cavity goes up the inside sprue gate that is equipped with and pours the passageway intercommunication, it is provided with logical groove to go up one side of mould orientation lower mould, it has the cutting board to lead to inslot sliding connection, be provided with the hole of cutting off that corresponds the setting with the sprue gate on the cutting board, cut off downthehole rotation and be connected with annular blade holder, the inboard of annular blade holder is provided with the cutter, it orders about the gliding actuating mechanism of cutting board to be provided with on the mould. This application has the effect that can cut off the runner automatically.

Description

Injection mold with automatic cutout mechanism

Technical Field

The application relates to the technical field of injection molds, in particular to an injection mold with an automatic cutting mechanism.

Background

The existing injection mould adopts a needle point or needle valve type hot runner more and more, or uses a point sprue, a hidden sprue and a mechanical arm to mutually break the plastic part and the waste material after the injection moulding of the plastic part, so that the full-automatic production of the mould is realized.

In view of the above-mentioned related art, the inventor believes that there are defects that when manual excision is performed, the labor intensity of workers is high, the working efficiency is low, and the quality of manual excision is affected by human factors.

SUMMERY OF THE UTILITY MODEL

In order to automatically cut off a gate, the present application provides an injection mold having an automatic cutting mechanism.

The application provides an injection mold with automatic cutout mechanism adopts following technical scheme:

the utility model provides an injection mold with automatic shutdown mechanism, includes mould and lower mould, go up mould and lower mould and mutually support and form the die cavity, the inside goods that form of die cavity, go up the inside runner hole that is equipped with and pours the passageway intercommunication of mould, it is provided with logical groove towards one side of lower mould to go up the mould, it has the cutting board to lead to sliding connection in the groove, be provided with the hole that cuts off that corresponds the setting with the runner hole on the cutting board, cut off downthehole rotation and be connected with annular blade holder, the inboard of annular blade holder is provided with the cutter, upward be provided with on the mould and order about the gliding actuating.

Through adopting above-mentioned technical scheme, inject into plastics to the die cavity through the runner hole during moulding plastics, order about the cutting off board through actuating mechanism and slide after the shaping is accomplished, the cutting off board cuts off hole and runner hole dislocation at the slip in-process, cuts off goods and runner clout, can cut off automatically, need not the manual excision of staff, and work efficiency is higher, and has reduced the human factor influence, and cutting quality stability is better.

Preferably, tooth sockets are uniformly arranged on the outer wall of the annular cutter holder along the circumferential direction, a sliding groove is formed in the cutting plate, and a rack meshed with the tooth sockets is connected in the sliding groove in a sliding mode.

Through adopting above-mentioned technical scheme, the cutter card is between runner clout and goods after the shaping, and the power that needs when directly pulling the cutting board and cuting is great, and the power that the goods received simultaneously is also great, probably takes place to warp, so through the slip rack before the pulling cutting board, it is rotatory to make the rack drive annular blade holder, and annular blade holder drives the blade rotation, cuts off partly with the coupling part between runner clout and the goods, then pulls the cutting board again and cuts, can reduce the risk that the goods warp.

Preferably, actuating mechanism is including setting up the cylinder on last mould, the telescopic link and the rack parallel arrangement and the fixed connection of cylinder, be provided with the spacing groove with the spout intercommunication on the cutting board, be provided with on the rack with spacing groove sliding fit's stopper, when stopper and spacing groove are close to the one end butt of cylinder, rack and annular blade holder separation.

Through adopting above-mentioned technical scheme, the telescopic link of cylinder drives the rack and slides along the spout when stretching out, and the rack drives annular blade holder rotatory, and when stopper and spacing groove were close to the one end butt of cylinder, the rack separates with annular blade holder, and the cylinder passes through the rack and the stopper drives the shut off plate and slides this moment, uses a cylinder can accomplish two steps, and it is comparatively convenient to use.

Preferably, the blade part of the cutter is serrated.

Through adopting above-mentioned technical scheme, the cutting edge of cockscomb structure is more laborsaving when cutting off.

Preferably, a pushing mechanism used for pushing out the product is arranged on the lower die and comprises an electric push rod, a mounting groove used for mounting the electric push rod is formed in the lower die, and the mounting groove is communicated with the cavity.

Through adopting above-mentioned technical scheme, the completion of moulding plastics to after cutting off runner clout, will go up the mould and take off, electric putter can be ejecting with the goods of hugging closely on the lower mould, and the staff of being convenient for takes, improves work efficiency.

Preferably, the end part of the telescopic rod of the electric push rod is provided with a profiling block, one side of the profiling block, which is far away from the electric push rod, is matched with the profile of a product, and the diameter of the profiling block is consistent with that of the mounting groove.

By adopting the technical scheme, the contact area between the profiling block and the product can be increased, the pressure intensity of the product when the product is ejected is reduced, the product is protected, and the risk of deformation of the product is further reduced.

Preferably, the electric push rod is coaxial with the sprue hole, and the diameter of the profile block is not larger than that of the sprue hole.

Through adopting above-mentioned technical scheme, when will going up the mould again and install on the lower mould after once moulding plastics, the last shape piece of electric putter can be ejecting with remaining runner clout in the runner hole, need not the manual work and clears up.

Preferably, the lower die is provided with a positioning column, and the upper die is provided with a positioning hole in sliding fit with the positioning column.

Through adopting above-mentioned technical scheme, can make mould and lower mould location more prepare through the cooperation of reference column and locating hole, guarantee the stability of processing.

In summary, the present application includes at least one of the following beneficial technical effects:

the cutting plate and the cutter are arranged, the driving mechanism drives the cutting plate to slide, the cutting hole and the sprue hole are staggered in the sliding process of the cutting plate, the product and the sprue excess material are cut off, the cutting can be automatically carried out, and the manual cutting by workers is not needed;

through setting up the rack, so through the slip rack before the pulling cutting off plate, make the rack drive annular blade holder rotatory, annular blade holder drives the blade rotation, cuts off partly with the coupling part between runner clout and the goods, then pulls the cutting off plate again and cuts, can reduce the risk that the goods warp.

Drawings

FIG. 1 is a sectional view of an injection mold having an automatic shut-off mechanism according to an embodiment of the present application;

FIG. 2 is a schematic view of the structure of the cutting plate of FIG. 1;

fig. 3 is a schematic structural view of the annular tool holder in fig. 2.

Description of reference numerals: 1. an upper die; 2. a lower die; 3. a cavity; 4. a sprue hole; 5. a through groove; 6. cutting off the plate; 7. a drive mechanism; 8. a pushing mechanism; 9. a positioning column; 10. positioning holes; 11. cutting off the hole; 12. an annular tool apron; 13. a cutter; 14. a tooth socket; 15. a chute; 16. a rack; 17. a limiting groove; 18. a limiting block; 19. a slip ring; 20. mounting grooves; 21. an electric push rod; 22. and (4) shaping blocks.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses injection mold with automatic cutout mechanism, refer to fig. 1, including last mould 1 and lower mould 2, it forms die cavity 3 to go up mould 1 and lower mould 2 and mutually support, the inside goods that form of die cavity 3, it is equipped with the runner hole 4 with the pouring channel intercommunication to go up mould 1 inside, it is provided with logical groove 5 to go up one side of mould 1 towards lower mould 2, it has cutting board 6 to lead to sliding connection in the groove 5, upward be provided with on the mould 1 and order about the gliding actuating mechanism 7 of cutting board 6, be provided with on the lower mould 2 and be used for the ejecting thrustor 8 of goods.

Four corners of the upper surface of the lower die 2 are respectively vertically provided with positioning columns 9, and the upper die 1 is provided with positioning holes 10 which are in sliding fit with the positioning columns 9.

Referring to fig. 2 and 3, the cutting plate 6 is provided with a cutting hole 11 corresponding to the gate hole 4, an annular tool holder 12 is rotatably connected in the cutting hole 11, the inner diameter of the annular tool holder 12 is consistent with the diameter of the gate hole 4, and a cutter 13 is arranged on the inner side of the annular tool holder 12.

The outer wall of annular blade holder 12 evenly is provided with tooth's socket 14 along circumference, has seted up spout 15 on the cutting off plate 6, and sliding connection has rack 16 with tooth's socket 14 meshing in spout 15, and it is rotatory to drive annular blade holder 12 when rack 16 slides, and then makes the blade cut runner waste material.

Be provided with the spacing groove 17 with spout 15 intercommunication on the cutting off board 6, spacing groove 17 is located spout 15 and keeps away from one side of annular blade holder 12, fixedly connected with stopper 18 on the rack 16, stopper 18 and spacing groove 17 sliding fit, when rack 16 slides along spout 15, stopper 18 slides in spacing groove 17, when stopper 18 and the one end butt that spacing groove 17 is close to the cylinder, rack 16 and annular blade holder 12 separation.

Two groups of sliding rings 19 which are respectively positioned at two sides of the tooth groove 14 are arranged on the outer wall of the annular cutter holder 12, the peripheral wall of each sliding ring 19 is polished smooth and sprayed with a tungsten carbide coating to enhance the wear resistance, and the diameter of each sliding ring 19 is consistent with that of the corresponding cutting hole 11 and is in sliding fit with the corresponding cutting hole 11.

The cutter 13 comprises a plurality of groups of blade parts arranged along the circumferential direction of the inner wall of the annular cutter holder 12, the lower surface of the blade part and the lower surface of the annular cutter holder 12 are in the same plane, and the blade part of the cutter 13 is in a sawtooth shape.

Referring to fig. 1, the driving mechanism 7 includes a cylinder disposed on the upper die 1, the cylinder is connected to an external air source, the cylinder is disposed in a staggered manner with the gate hole 4, a telescopic rod of the cylinder is parallel to the rack 16, and a connecting frame is disposed on the telescopic rod of the cylinder and is fixedly connected to the rack 16.

The lower die 2 is coaxially provided with a mounting groove 20 with the sprue hole 4, the mounting groove 20 penetrates through the lower die 2 and is communicated with the cavity 3, the pushing mechanism 8 comprises an electric push rod 21 arranged in the mounting groove 20, the electric push rod 21 is coaxial with the mounting groove 20, a profiling block 22 is fixed on a telescopic rod of the electric push rod 21, the upper surface of the profiling block 22 is matched with the outline of a product, and the diameter of the profiling block 22 is not larger than the sprue hole 4.

When the profiling block 22 is flush with the upper surface of the upper die 1 during injection molding, the electric push rod 21 is connected with an external power supply after injection molding is finished, the telescopic rod extends out to eject a product, and when the upper die 1 is installed on the lower die 2 again after injection molding is finished once, the profiling block 22 on the electric push rod 21 can eject residual sprue excess materials in the sprue hole 4.

The implementation principle of the injection mold with the automatic cutting mechanism is as follows: when moulding plastics through pouring gate hole 4 during to the die cavity 3 interior injection plastics, the shaping is accomplished the back cylinder telescopic link and is stretched out and drive rack 16 and slide to going up the mould 1 outside, and it is rotatory to drive annular blade holder 12 when rack 16 slides, and then makes the blade cut the runner waste material, and when stopper 18 and spacing groove 17 were close to the one end butt of cylinder, rack 16 separated with annular blade holder 12, and rack 16 continued to move this moment, drives cutting plate 6 and slides, cuts off the runner clout completely.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides an injection mold with automatic cutout mechanism which characterized in that: including last mould (1) and lower mould (2), go up mould (1) and lower mould (2) and mutually support and form die cavity (3), die cavity (3) inside forms goods, go up inside runner hole (4) that are equipped with and pour the channel intercommunication of mould (1), it is provided with logical groove (5) towards one side of lower mould (2) to go up mould (1), it has cutting board (6) to lead to groove (5) sliding connection, be provided with on cutting board (6) and correspond cutting off hole (11) that set up with runner hole (4), cutting off hole (11) internal rotation is connected with annular blade holder (12), the inboard of annular blade holder (12) is provided with cutter (13), it orders about gliding actuating mechanism (7) of cutting board (6) to be provided with on mould (1).

2. An injection mold having an automatic shut off mechanism as defined in claim 1, wherein: tooth grooves (14) are uniformly formed in the outer wall of the annular cutter holder (12) along the circumferential direction, a sliding groove (15) is formed in the cutting plate (6), and a rack (16) meshed with the tooth grooves (14) is connected in the sliding groove (15) in a sliding mode.

3. An injection mold having an automatic shut off mechanism as defined in claim 2, wherein: actuating mechanism (7) is including setting up the cylinder on last mould (1), the telescopic link and rack (16) parallel arrangement and fixed connection of cylinder, be provided with spacing groove (17) with spout (15) intercommunication on cutting off board (6), be provided with on rack (16) with spacing groove (17) sliding fit's stopper (18), when stopper (18) and spacing groove (17) are close to the one end butt of cylinder, rack (16) and annular blade holder (12) separation.

4. An injection mold having an automatic shut off mechanism as defined in claim 3, wherein: the blade part of the cutter (13) is serrated.

5. An injection mold having an automatic shut off mechanism as defined in claim 1, wherein: the pushing mechanism (8) used for pushing out products is arranged on the lower die (2), the pushing mechanism (8) comprises an electric push rod (21), an installation groove (20) used for installing the electric push rod (21) is formed in the lower die (2), and the installation groove (20) is communicated with the cavity (3).

6. An injection mold having an automatic shut off mechanism as defined in claim 5, wherein: the end part of the telescopic rod of the electric push rod (21) is provided with a profiling block (22), one side of the profiling block (22) far away from the electric push rod (21) is matched with the outline of a product, and the diameter of the profiling block (22) is consistent with that of the mounting groove (20).

7. An injection mold having an automatic shut off mechanism as defined in claim 6, wherein: the electric push rod (21) is coaxial with the sprue hole (4), and the diameter of the profiling block (22) is not larger than that of the sprue hole (4).

8. An injection mold having an automatic shut off mechanism as defined in claim 1, wherein: the lower die (2) is provided with a positioning column (9), and the upper die (1) is provided with a positioning hole (10) in sliding fit with the positioning column (9).