CN219133105U

CN219133105U - Core-pulling structure for plastic injection mold

Info

Publication number: CN219133105U
Application number: CN202223549682.0U
Authority: CN
Inventors: 吴晓锋
Original assignee: Jiangxi Qianrun Intelligent Technology Co ltd
Current assignee: Jiangxi Qianrun Intelligent Technology Co ltd
Priority date: 2022-12-29
Filing date: 2022-12-29
Publication date: 2023-06-06
Anticipated expiration: 2032-12-29

Abstract

The utility model discloses a core-pulling structure for a plastic injection mold, which belongs to the technical field of plastic injection molds, wherein a guide post is fixedly arranged on the surface of an upper mold, the lower end of the guide post is in sliding connection with a lower mold, the side surface of the upper mold is detachably connected with a clamping seat, the side surface of the clamping seat is provided with an inclined rod, the side surface of the lower mold is provided with a sliding chute, a left core block and a right core block are in sliding connection with the side surface of the left core block and the right core block through the sliding chute, the core-pulling structure for the plastic injection mold can automatically move in the opening and closing process of the upper mold through the inclined rod, the clamping seat and a spring which are arranged on the outer side of the upper mold, the core-pulling speed is high, the service lives of the mold and the core block are prolonged, the arranged core-pulling frame and the telescopic rod can stably control the movement of the right core block in the opening and closing process of the mold, the movement stability of the core block is ensured, the sealing effect of the core block is further improved, and the injection molding quality is ensured.

Description

Core-pulling structure for plastic injection mold

Technical Field

The utility model relates to the technical field of plastic injection molds, in particular to a core pulling structure for a plastic injection mold.

Background

The utility model provides a plastic product's instrument is produced to injection mold, some needs design core structure in injection mold structure, a split type oblique top of injection mold core piece like that disclosed in bulletin number CN215095412U, but the mould pellet is at the removal in-process, need slider and diagonal bar slip direction, not only can't guarantee the removal stability of pellet, the pellet needs to contact with the mould die cavity inner wall moreover, the pellet is probably bump the mould with the mould in mould compound mode in-process, shortened the life of mould and pellet, for this reason, we have designed a plastic injection mold with the structure of loosing core, solve above-mentioned problem.

Disclosure of Invention

Aiming at the problems existing in the prior art, the utility model aims to provide a core pulling structure for a plastic injection mold, which ensures that a left core block can automatically move in the opening and closing process of an upper mold through a diagonal rod, a clamping seat and a spring which are arranged on the outer side of the upper mold, meanwhile, the core pulling speed is high, the service lives of the mold and the core block are prolonged, and the core pulling frame and the telescopic rod which are arranged can stably control the right core block to move in the opening and closing process of the mold, so that the moving stability of the core block is ensured, the sealing effect of the core block is further improved, and the injection molding quality is ensured.

In order to solve the problems, the utility model adopts the following technical scheme.

The utility model provides a plastic injection mold is with structure of loosing core, includes mould and lower mould, go up the fixed surface of mould and install the guide pillar, the lower extreme and the lower mould sliding connection of guide pillar, the side of going up the mould can be dismantled and be connected with the cassette, the side of cassette is provided with the down tube, open the side of lower mould has the spout, and has left pellet and right pellet through spout sliding connection, the equal fixedly connected with inserted block of side of left pellet and right pellet, the side of left pellet and right pellet all with the side telescopic connection of lower mould, the side of lower mould can be dismantled respectively and is connected with gag lever post and core frame, the surface of core frame can be dismantled and be connected with the cylinder body, the one end of cylinder body is provided with the telescopic link, the one end of telescopic link and the surface of right pellet can be dismantled and be connected, this plastic injection mold is with the structure through the down tube and cassette and the spring in the last mould outside for left pellet is at last mould open and shut the in-process, the equal fixedly connected with inserted block of side of left pellet and right pellet, the side of core pellet takes place simultaneously with last chamber and the side telescopic link, and the side of going up die can be guaranteed to have guaranteed the steady core block and the steady core block of moving quality of moving, and the steady core block and the life in the mould has guaranteed the life of the mould and has guaranteed the steady core block and has moved the life.

Further, the surface of gag lever post has cup jointed the spring, the one end and the surface contact of left pellet are connected of spring, the other end contact of spring is connected with the adjusting sleeve, the adjusting sleeve passes through threaded connection at the surface of gag lever post, and the elastic strength of spring can be adjusted to the adjusting sleeve, can make the side of left pellet automatic roll-off lower mould through elasticity.

Further, the side of lower mould is opened there is the screw, the surface of gag lever post is equipped with the external screw thread, open the side of left pellet has the through-hole, the inner wall and the surface contact of gag lever post of through-hole are connected, and the gag lever post has the effect of direction, has guaranteed the sliding stability of left pellet.

Further, the surface of left pellet is opened there is the draw-in groove, the side of draw-in groove is opened there is the guide slot, the inner wall of guide slot is the slope form, the inner wall of guide slot is connected with the surface contact of diagonal rod, and draw-in groove and guide slot have spacing guide's effect.

Further, the fixed plate is detachably connected to one end of the telescopic rod, the fixed rod is sleeved on the side face of the fixed plate, and the surface of the fixed rod is in threaded connection with the surface of the right core block, so that the telescopic rod is detachably combined with the right core block.

Further, a mounting hole is formed in the surface of the core pulling frame, a fastening screw is sleeved on the inner wall of the mounting hole, and the surface of the fastening screw is in threaded connection with the side face of the lower die.

Compared with the prior art, the utility model has the advantages that:

(1) According to the scheme, the inclined rod, the clamping seat and the spring are arranged outside the upper die, so that the left core block can automatically move in the opening and closing process of the upper die, the core block is prevented from colliding with the upper die cavity, the core pulling speed is high, and the service lives of the die and the core block are prolonged.

(2) The core pulling frame and the telescopic rod are arranged, the right core block can be controlled to move stably in the opening and closing process of the die, the moving stability of the core block is guaranteed, the sealing effect of the core block is improved, and the injection molding quality is guaranteed.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a top view of the left core block structure of the present utility model;

fig. 3 is a top view of the mounting structure of the core pulling frame and the cylinder body of the present utility model.

The reference numerals in the figures illustrate:

1 upper die, 11 guide pillar, 2 lower die, 21 spout, 3 left core block, 31 inserted block, 32 draw-in groove, 33 guide slot, 34 through-hole, 35 gag lever post, 36 spring, 37 adjusting sleeve, 38 diagonal rod, 39 cassette, 4 right core block, 41 core-pulling frame, 42 mounting hole, 43 telescopic link, 44 fixed plate, 45 dead lever, 46 cylinder body.

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.

Example 1

Referring to fig. 1-3, a core pulling structure for plastic injection mold comprises an upper mold 1 and a lower mold 2, wherein a guide post 11 is fixedly arranged on the surface of the upper mold 1, the lower end of the guide post 11 is in sliding connection with the lower mold 2, a clamping seat 39 is detachably connected to the side surface of the upper mold 1, the clamping seat 39 is automatically clamped into a clamping groove 32 after the upper mold 1 is clamped, the sealing position of a left core block 3 is limited, meanwhile, an insert block 31 does not protrude out of the surface of a cavity, one end sealing performance of the sliding groove 21 is ensured, meanwhile, collision of the mold is avoided, an inclined rod 38 is arranged on the side surface of the clamping seat 39, the inclined rod 38 has the function of pushing and limiting, the replacement is convenient, collision of the mold is not caused, the sliding groove 21 is arranged on the side surface of the lower mold 2, and the left core block 3 and the right core block 4 are in sliding connection through the sliding groove 21, the side of left pellet 3 and right pellet 4 all fixedly connected with inserted block 31, the removal that left pellet 3 left resets, can accomplish through the elasticity of elastic component such as spring 36 or elastic rubber, the side of left pellet 3 and right pellet 4 all with the side telescopic connection of lower mould 2, the side of lower mould 2 is detachably connected with gag lever post 35 and core frame 41 respectively, core frame 41's surface detachably is connected with cylinder body 46, cylinder body 46 is pneumatic cylinder or cylinder, can control right pellet 4 and remove, can guarantee the stability of right pellet 4 in the removal in-process, the change of right pellet 4 of being convenient for simultaneously, cylinder body 46's one end is provided with telescopic link 43, telescopic link 43's one end and right pellet 4's surface detachably are connected.

The surface of gag lever post 35 has cup jointed spring 36, the one end of spring 36 is connected with the surface contact of left pellet 3, the other end contact of spring 36 is connected with adjusting collar 37, adjusting collar 37 passes through threaded connection at the surface of gag lever post 35, adjusting collar 37 can adjust the spring strength of spring 36, can make left pellet 3 automatic roll-off lower mould 2's side through elasticity, open the side of lower mould 2 has the screw, the surface of gag lever post 35 is equipped with the external screw thread, open the side of left pellet 3 has through-hole 34, the inner wall of through-hole 34 is connected with the surface contact of gag lever post 35, gag lever post 35 has the effect of direction, the sliding stability of left pellet 3 has been guaranteed, open on the surface of left pellet 3 has draw-in groove 32, open the side of draw-in groove 32 has guide slot 33, the inner wall of guide slot 33 is the slope form, the inner wall of guide slot 33 is connected with the surface contact of diagonal bar 38, draw-in groove 32 and guide slot 33 have the effect of spacing direction.

In this embodiment, through the diagonal rod 38 and the clamping seat 39 and the spring 36 which are arranged on the outer side of the upper die 1, the left core block 3 can automatically move in the opening and closing process of the upper die 1, meanwhile, the collision between the core block and the cavity of the upper die 1 is avoided, the core pulling speed is high, and the service lives of the die and the core block are prolonged.

Example 2

One end of the telescopic rod 43 is detachably connected with a fixing plate 44, the side face of the fixing plate 44 is sleeved with a fixing rod 45, the surface of the fixing rod 45 is in threaded connection with the surface of the right core block 4, so that the space between the right core block 4 and the telescopic rod 43 has the function of disassembling and assembling, the surface of the core pulling frame 41 is provided with a mounting hole 42, the inner wall of the mounting hole 42 is sleeved with a fastening screw, and the surface of the fastening screw is in threaded connection with the side face of the lower die 2.

In this embodiment, the core pulling frame 41 and the telescopic rod 43 can be used for stably controlling the movement of the right core block 4 in the opening and closing process of the mold, so that the movement stability of the core block is ensured, the sealing effect of the core block is further improved, and the injection molding quality is ensured.

This structure of loosing core for plastic injection mold pushes left pellet 3 rightwards in last mould 1 compound die process, down the dead lever 38 moves left pellet 3 right and removes extrusion spring 36, spring 36 forms compression elasticity, left pellet 3 right removes and makes insert 31 right removal moreover, wait to go up mould 1 compound die back in place, cassette 39 down card goes into draw-in groove 32, simultaneously telescopic link 43 stretches out and pushes left pellet 4, make insert 31 that right pellet 4 set up left remove in place, then carry out the injection molding can, left pellet 3 and right pellet 4 can reduce one-way pellet travel, the job stabilization nature and the efficiency of loosing core, through dead lever 38 and cassette 39 and spring 36 that set up in last mould 1 outside, make left pellet 3 and last mould chamber bump simultaneously, and loose core speed is fast, the life of mould and pellet has been prolonged, and the steady control pellet that right pellet 4 set up removes in the mould opening and shutting down, the quality of moulding plastics has been guaranteed to the steady control pellet, the quality of moulding plastics has been guaranteed to remove the quality.

The above description is only of the preferred embodiments of the present utility model; the scope of the utility model is not limited in this respect. Any person skilled in the art, within the technical scope of the present disclosure, may apply to the present utility model, and the technical solution and the improvement thereof are all covered by the protection scope of the present utility model.

Claims

1. The utility model provides a plastic injection mold is with structure of loosing core, includes mould (1) and lower mould (2), its characterized in that: the surface mounting of going up mould (1) has guide pillar (11), the lower extreme and the lower mould (2) sliding connection of guide pillar (11), the side of going up mould (1) can be dismantled and be connected with cassette (39), the side of cassette (39) is provided with down tube (38), open the side of lower mould (2) has spout (21), and has left pellet (3) and right pellet (4) through spout (21) sliding connection, the side of left pellet (3) and right pellet (4) is all fixedly connected with inserted block (31), the side of left pellet (3) and right pellet (4) is all with the side telescopic connection of lower mould (2), the side of lower mould (2) can be dismantled respectively and is connected with gag lever post (35) and core-pulling frame (41), the surface of core-pulling frame (41) can be dismantled and be connected with cylinder body (46), the one end of cylinder body (46) is provided with telescopic link (43), the one end of telescopic link (43) is dismantled with the surface of right pellet (4).

2. The core pulling structure for a plastic injection mold according to claim 1, wherein: the surface of gag lever post (35) has cup jointed spring (36), the one end of spring (36) is connected with the surface contact of left pellet (3), the other end contact of spring (36) is connected with adjusting sleeve (37), adjusting sleeve (37) pass through threaded connection at the surface of gag lever post (35).

3. The core pulling structure for a plastic injection mold according to claim 1, wherein: screw holes are formed in the side face of the lower die (2), external threads are formed in the surface of the limiting rod (35), through holes (34) are formed in the side face of the left core block (3), and the inner wall of each through hole (34) is in contact connection with the surface of the limiting rod (35).

4. The core pulling structure for a plastic injection mold according to claim 1, wherein: the surface of left pellet (3) is opened has draw-in groove (32), the side of draw-in groove (32) is opened has guide slot (33), the inner wall of guide slot (33) is the slope form, the inner wall of guide slot (33) is connected with the surface contact of diagonal rod (38).

5. The core pulling structure for a plastic injection mold according to claim 1, wherein: one end of the telescopic rod (43) is detachably connected with a fixing plate (44), a fixing rod (45) is sleeved on the side face of the fixing plate (44), and the surface of the fixing rod (45) is in threaded connection with the surface of the right core block (4).

6. The core pulling structure for a plastic injection mold according to claim 1, wherein: the surface of the loose core frame (41) is provided with a mounting hole (42), the inner wall of the mounting hole (42) is sleeved with a fastening screw, and the surface of the fastening screw is in threaded connection with the side surface of the lower die (2).