CN210679525U

CN210679525U - Slide block spring pin positioning mechanism of injection mold

Info

Publication number: CN210679525U
Application number: CN201920677421.6U
Authority: CN
Inventors: 李过
Original assignee: Taizhou Kaihua Automobile Mould Co ltd
Current assignee: Taizhou Kaihua Automobile Mould Co ltd
Priority date: 2019-05-13
Filing date: 2019-05-13
Publication date: 2020-06-05
Anticipated expiration: 2029-05-13

Abstract

A slide block spring pin positioning mechanism of an injection mold comprises an upper compound plate and a lower compound plate, wherein a fixed mold plate is arranged below the upper compound plate, a lock module is arranged below the fixed mold plate, a through hole is formed in the lower compound plate, mold feet are arranged on the lower compound plate, an upper ejector pin plate, a lower ejector pin plate and an ejector pin are arranged on the lower compound plate between the mold feet, an ejector pin of an injection machine penetrates through the through hole to be in contact with the lower ejector pin plate, a movable mold plate is arranged on the mold feet, a plastic piece is arranged between the movable mold plate and the fixed mold plate, a side hole is formed in the side wall of the plastic piece, a spring groove is formed in one side of the movable mold plate, a spring is arranged in the spring groove, a positioning hole is formed in the movable mold plate above the spring groove and is communicated with the spring groove, a side core pulling slide block is arranged on the movable mold plate, the outer wall of the side core pulling slide block is in contact with, and a positioning pin is connected below the side core-pulling slider and penetrates through the positioning hole to be contacted with the spring.

Description

Slide block spring pin positioning mechanism of injection mold

Technical Field

The utility model relates to an injection mold especially relates to injection mold's slider spring pin positioning mechanism.

Background

After the injection mold performs injection molding on the plastic part, if one side of the plastic part is provided with a side hole, the side core-pulling sliding block needs to be arranged on one side of the movable mold plate, and when the mold is opened, the side core-pulling sliding block is driven to slide outwards to pull out the side hole of the plastic part, so that the plastic part can be ejected and demolded. In the prior art, an inclined guide rod is usually arranged in a fixed die plate, an inclined guide hole is formed in a side core-pulling slider, when a die is opened, the inclined guide rod and the inclined guide hole are matched to drive the side core-pulling slider to slide outwards for core pulling, positioning mechanisms such as a positioning pin or a positioning convex nozzle are arranged on a movable die plate, the movable die plate plays a role in positioning the movement of the side core-pulling slider, and the inclined guide rod and the inclined guide hole are matched and the positioning mechanisms such as the positioning pin are added, so that the die structure is complex, and the development cost of the die.

Disclosure of Invention

The utility model aims at overcoming the shortcoming that prior art exists, provide one kind in the mould die sinking, the slider outwards slides is loosed core to the automatic side that promotes to can loose core the slider to the offside and play the positioning action, simple structure reduces mould development cost's injection mold's slider spring pin positioning mechanism.

The utility model discloses injection mold's slider spring pin positioning mechanism's technical scheme is: the injection molding machine comprises an upper compound plate and a lower compound plate, wherein a fixed template is arranged below the upper compound plate, a locking module is arranged below the fixed template, a through hole is formed in the lower compound plate, mold feet are arranged on the lower compound plate, an upper thimble plate, a lower thimble plate and thimbles are arranged on the lower compound plate between the mold feet, the ejector rods of the injection machine penetrate through the through hole to be contacted with the lower thimble plate, a movable template is arranged on the mold feet, an injection molding plastic piece is arranged between the movable template and the fixed template, side holes are formed in the side wall of the plastic piece, a spring groove is formed in one side of the movable template, a spring is arranged in the spring groove, a positioning hole is formed in the movable template above the spring groove and communicated with the spring groove, a side core-pulling slider is arranged on the movable template, the outer wall of the side core-pulling slider is contacted with the locking module of the fixed template during mold closing, the lower end of the side core-, and a positioning pin is connected below the side core-pulling slider and penetrates through the positioning hole to be contacted with the spring.

The utility model discloses an injection mold's slider spring pin positioning mechanism, after working of plastics injection moulding, lower double plate drives the mould foot, go up the thimble board, lower thimble board, the movable mould board, side slider of loosing core and working of plastics move backward together, and go up double plate and fixed die plate and keep motionless, mould driven die plate and fixed die plate department die sinking, when the side slider of loosing core is moving backward, it breaks away from the contact gradually with the locking module of fixed die plate, the spring promotes the locating pin outwards along the locating hole under the effect of restoring force this moment, the locating pin drives the outside removal of side slider of loosing core, make the lug of side slider of loosing core outwards take out the side opening of working of plastics, when the locating pin contacts with the rear end of locating hole, the locating hole plays the positioning action to the locating pin, make it stop moving, the side opening that the lug of side slider of loosing core also completely taken out the working of plastics this moment, at last, the ejector pin by the injection machine drives, The lower ejector plate and the ejector pins eject and demold the plastic part, and when the die is closed and reset, the side core-pulling sliding block is gradually pushed to reset through the matching of the locking module of the fixed die plate and the outer wall of the side core-pulling sliding block, the side core-pulling sliding block drives the positioning pins to reset together, and the positioning pins push the springs to compress. This scheme injection mold's slider spring pin positioning mechanism utilizes the spring to promote the dowel to drive the side and looses core the slider and do the action of side loosing core during the die sinking, simple structure, the cooperation of rethread dowel and locating hole, the removal of the slider of loosing core of offside plays the positioning action, when making the mould compound die, the latch segment can be accurate and the side slider cooperation of loosing core, the slider of loosing core of drive side resets, it is accurate to guarantee to move, avoid latch segment and side slider of loosing core to appear the collision damage phenomenon when resetting.

Drawings

FIG. 1 is a schematic view of a mold clamping state structure of a slide block spring pin positioning mechanism of an injection mold;

FIG. 2 is a schematic view of an open-mold state structure of a slider spring pin positioning mechanism of an injection mold;

FIG. 3 is a schematic structural diagram of a plastic part ejection state of a slider spring pin positioning mechanism of an injection mold.

Detailed Description

The utility model relates to a slide block spring pin positioning mechanism of an injection mold, as shown in figures 1-3, comprising an upper compound plate 1 and a lower compound plate 2, wherein a fixed mold plate 3 is arranged under the upper compound plate, a lock module 20 is arranged under the fixed mold plate, a perforation 4 is arranged in the lower compound plate, a mold foot 5 is arranged on the lower compound plate, an upper thimble plate 6, a lower thimble plate 7 and a thimble 8 are arranged on the lower compound plate between the mold feet, a thimble 9 of an injection machine is contacted with the lower thimble plate through the perforation, a movable mold plate 10 is arranged on the mold foot, an injection molding plastic piece 11 is arranged between the movable mold plate and the fixed mold plate 3, a side hole 12 is arranged on the side wall of the plastic piece, a spring groove 13 is arranged on one side of the movable mold plate 10, a spring 14 is arranged in the spring groove, a positioning hole 15 is arranged in the movable mold plate above the spring groove, the positioning hole is communicated with the spring groove, a side core-pulling slide block 16 is arranged on the movable mold plate, when, the lower end of the side core-pulling sliding block is in sliding fit with the movable mould plate, one side of the side core-pulling sliding block is provided with a convex block 17, the convex block is matched with the side hole 12 of the plastic part 11, and a positioning pin 18 is connected below the side core-pulling sliding block and penetrates through the positioning hole 15 to be in contact with the spring 14. After the plastic piece 11 is injection molded, the lower doubling plate 2 drives the mold legs 5, the upper ejector plate 6, the lower ejector plate 7, the movable mold plate 10, the side core pulling slider 16 and the plastic piece 11 to move backwards together, the upper doubling plate 1 and the fixed mold plate 3 are kept still, the mold is opened at the position of the movable mold plate 10 and the fixed mold plate 3, the side core pulling slider 16 gradually breaks away from contact with the lock module 20 of the fixed mold plate when moving backwards, at the moment, the spring 14 pushes the positioning pin 18 to move outwards along the positioning hole 15 under the action of restoring force, the positioning pin drives the side core pulling slider 16 to move outwards, so that the lug 17 of the side core pulling slider outwards pulls out the side hole 12 of the plastic piece 11, when the positioning pin 18 contacts with the rear end part of the positioning hole 15, the positioning hole plays a positioning role on the positioning pin to stop moving, and at the moment, the lug 17 of the side core pulling slider 16 also completely pulls out the side, and finally, an ejector rod 9 of the injection machine drives an upper ejector pin plate 6, a lower ejector pin plate 7 and an ejector pin 8 to eject and demold the plastic part 11, when the mold is closed and reset, the side core-pulling slider is gradually pushed to reset through the matching of a lock module 20 of the fixed mold plate 3 and the outer wall of the side core-pulling slider 16, the side core-pulling slider drives the positioning pins 18 to reset together, and the positioning pins push the springs 14 to compress. This scheme injection mold's slider spring pin positioning mechanism, utilize spring 14 to promote the action that side core-pulling slider 16 was the side core-pulling during the die sinking, moreover, the steam generator is simple in structure, rethread dowel 18 and locating hole 15's cooperation, the removal of the slider 16 of loosing core of offside plays the positioning action, when making the mould compound die, latch segment 20 can be accurate and the cooperation of the slider 16 of loosing core of inclining core, it resets to drive the slider of loosing core of inclining core, guarantee to move accurately, avoid latch segment 20 and the slider 16 of loosing core of inclining core to appear the collision damage phenomenon when resetting.

Claims

1. Injection mold's slider spring pin positioning mechanism, including last compoboard (1) and lower compoboard (2), set up fixed die plate (3) under going up the compoboard, the system has lock module piece (20) under the fixed die plate, it has perforation (4) to open in the compoboard down, set up moulding foot (5) on the compoboard down, set up thimble board (6) on the lower compoboard between the moulding foot, thimble board (7) and thimble (8) down, ejector pin (9) of injection machine pass perforation and contact with thimble board down, set up movable mould board (10) on the moulding foot, there are injection moulding's working of plastics (11) between movable mould board and fixed die plate (3), the lateral wall system of working of plastics has side opening (12), its characterized in that: one side system of movable mould board (10) has spring groove (13), sets up spring (14) in the spring groove, system locating hole (15) in the movable mould board of spring groove top, the locating hole communicates with each other with the spring groove, set up side slider of loosing core (16) on the movable mould board, during the compound die, the outer wall of side slider of loosing core contacts with lock module (20) of fixed mould board (3), side slider of loosing core lower extreme and movable mould board sliding fit, one side system of side slider of loosing core has lug (17), the lug cooperatees with side opening (12) of working of plastics (11), connect locating pin (18) under the slider of loosing core of side, locating pin passes locating hole (15) and contacts with spring (14).