CN211683318U

CN211683318U - Forced return device of injection mold

Info

Publication number: CN211683318U
Application number: CN201922353727.9U
Authority: CN
Inventors: 孙红涛; 王越; 崔建东
Original assignee: Changchun Qianjia Wanli Mould Co ltd
Current assignee: Changchun Qianjia Wanli Mould Co ltd
Priority date: 2019-12-24
Filing date: 2019-12-24
Publication date: 2020-10-16
Anticipated expiration: 2029-12-24

Abstract

The utility model relates to an injection mold's forced return device, including deciding the mould, the ejector pin, reset plate, the chassis, the support plate, the connecting rod, the spout, the driving plate, the draw runner, the slider, the round pin axle, the carousel, torsional spring and pivot, the ejector pin top is located decides inside the mould, the bottom of ejector pin and reset plate fixed connection, the carousel rotates through the pivot and connects inside the chassis, turn round the spring housing and locate pivot annular side, draw runner sliding connection is inside the chassis, slider sliding connection is inside the spout, driving plate and connecting rod all are equipped with two, two driving plate symmetries set up at the draw runner both ends, the driving plate runs through the chassis upper surface through the connecting rod, with the outside support plate fixed connection in chassis, the round pin hub fixation sets up on the carousel surface, the slider rotates through the round pin axle and connects on the carousel surface, the support plate is connected with the reset plate, the utility model provides, The collision of the push-out parts such as the push tube and the push block occurs.

Description

Forced return device of injection mold

Technical Field

The utility model relates to an injection mold equipment field specifically is an injection mold's forced return device.

Background

A plastic mold is a tool which is matched with a plastic molding machine in the plastic processing industry and gives a complete configuration and accurate dimension to a plastic product. Because of the variety and processing method of plastic, and the structure of plastic molding machines and plastic products are various, the variety and structure of plastic molds are also various. A combined plastic mould for compression moulding, extrusion moulding, injection moulding, blow moulding and low-foaming moulding mainly comprises a female mould with a variable cavity and consisting of a female mould combined substrate, a female mould component and a female mould combined clamping plate, and a male mould with a variable core and consisting of a male mould combined substrate, a male mould component, a male mould combined clamping plate, a cavity cut-off component and a side cut-off combined plate.

Most plastics are prepared by using an injection mold, and under the condition that ejector parts such as an ejector pin, an ejector tube and an ejector block are arranged below a sliding block of the injection mold, in order to prevent the sliding block from being inserted into and colliding with the ejector parts such as the ejector pin, the ejector tube and the ejector block when the injection mold is closed, a reset spring is generally used for acting an ejector plate to enable the ejector parts such as the ejector pin, the ejector tube and the ejector block to return first. On the one hand, the mechanism is easy to fatigue failure due to the spring; on the other hand, when thimble board return resistance is great, spring strength is not enough, and these two aspects all can arouse that the thimble board return is not in place, and the condition that the slider collides with ejection parts such as thimble, ejector sleeve, kicking block below the slider when leading to injection mold compound die takes place, to sum up, this application now provides an injection mold's compulsory return means and solves the problem that the aforesaid appears.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an injection mold's compulsory return means to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a forced return device of an injection mold comprises a device main body and a reset mechanism, wherein the device main body comprises a fixed mold, an ejector rod, a reset plate and a chassis, the top end of the ejector rod is positioned inside the fixed mold, the bottom end of the ejector rod is fixedly connected with the reset plate, the reset mechanism comprises a support plate, a connecting rod, a sliding groove, a driving plate, a sliding strip, a sliding block, a pin shaft, a rotary disc, a torsional spring and a rotating shaft, the rotary disc is rotatably connected inside the chassis through the rotating shaft, the torsional spring is fixedly arranged inside the chassis, a torsional spring sleeve is arranged on the annular side face of the rotating shaft, the sliding strip is slidably connected inside the chassis, the sliding groove is formed inside the sliding strip, the sliding block is slidably connected inside the sliding groove, two driving plates and two connecting rods are arranged at the two ends of the sliding strip, the driving plates penetrate through the upper surface of the, the pin shaft is fixedly arranged on the surface of the rotary table, the sliding block is rotatably connected to the surface of the rotary table through the pin shaft, and the support plate is connected with the reset plate.

Preferably, the chassis is provided with an opening for the connecting rod to slide.

Preferably, the inner wall of the torsion spring is tightly connected with the annular side surface of the rotating shaft.

Preferably, a strip-shaped groove for the sliding strip to slide up and down is formed in the chassis.

Preferably, be provided with damper between board and the support plate that resets, damper includes sleeve pipe, damping spring and shock attenuation gasket, it is provided with damping spring to reset between board and the support plate, the sleeve pipe cover is located the damping spring outside, just be provided with damping gasket between damping spring and the support plate.

Preferably, the front surface of the chassis is hinged with an access door.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a restoring force of torsional spring has replaced the restoring force of traditional spring, has promoted the effect that resets, utilizes the mechanical structure that support plate, connecting rod, spout, driving plate, draw runner, slider, round pin axle, carousel and pivot are constituteed simultaneously, prevents that the condition of the top pin of the board that resets top, ejector sleeve, kicking block etc. ejecting part collision from taking place.

The utility model discloses a sleeve pipe, damping spring and shock attenuation gasket alleviate the rigidity collision between board and the ejector pin that resets and the influence that produces.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic structural view of the reset mechanism of the present invention;

fig. 3 is a schematic structural view of the middle damping mechanism of the present invention.

In the reference symbols: 1. fixing a mold; 2. a top rod; 3. a reset plate; 4. a damping mechanism; 5. a reset mechanism; 6. a chassis; 41. a sleeve; 42. a damping spring; 43. a shock-absorbing pad; 501. a carrier plate; 502. a connecting rod; 503. a chute; 504. a drive plate; 505. a slide bar; 506. a slider; 507. a pin shaft; 508. a turntable; 509. a torsion spring; 510. a rotating shaft.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: the utility model provides an injection mold's compulsory return means, includes device main part and canceling release mechanical system 5, the device main part includes fixed mould 1, ejector pin 2, resets board 3 and

chassis

6, 2 top positions in fixed mould 1 insides on the ejector pin, 2 bottom and the 3 fixed connection that resets of ejector pin, canceling release mechanical system 5 includes support plate 501, connecting rod 502, spout 503, driving plate 504, draw runner 505, slider 506, round pin axle 507, carousel 508, torsional spring 509 and pivot 510, carousel 508 rotates through pivot 510 and connects inside chassis 6, torsional spring 509 is fixed to be set up inside chassis 6, and torsional spring 509 overlaps locates pivot 510 annular side, draw runner 505 sliding connection is inside chassis 6, spout 503 has been seted up inside draw runner 505, slider 506 sliding connection is inside spout 503, driving plate 504 and connecting rod 502 all are equipped with two, two driving plate 504 symmetry sets up at draw runner 505 both ends, the transmission plate 504 penetrates through the upper surface of the chassis 6 through the connecting rod 502 and is fixedly connected with the carrier plate 501 outside the chassis 6, the pin 507 is fixedly arranged on the surface of the turntable 508, the sliding block 506 is rotatably connected on the surface of the turntable 508 through the pin 507, and the carrier plate 501 is connected with the reset plate 3.

The chassis 6 is provided with an opening for the connecting rod 502 to slide.

The inner wall of the torsion spring 509 is tightly connected with the annular side surface of the rotating shaft 510.

A strip-shaped groove for the sliding strip 505 to slide up and down is formed in the chassis 6.

Be provided with damper 4 between board 3 and the support plate 501 that resets, damper 4 includes sleeve pipe 41, damping spring 42 and shock attenuation gasket 43, be provided with damping spring 42 between board 3 and the support plate 501 that resets, damping spring 42 outside is located to the sleeve pipe 41 cover, just be provided with damping gasket 43 between damping spring 42 and the support plate 501.

The front surface of the chassis 6 is hinged with an access door.

The utility model discloses at the during operation: when the die is closed, the material pushes the ejector rod 2 to move downwards to drive the reset plate 3 to move downwards and push the carrier plate 501 to move downwards, the connecting rod 502 drives the transmission plate 504 to move downwards, the transmission plate 504 drives the slide bar 505 to move downwards, the slide bar 505 drives the slide block 506 to slide in the sliding groove 503, the slide block 506 drives the turntable 508 to rotate through the pin 507 while sliding, the turntable 508 drives the rotating shaft 510 to rotate, the rotating shaft 510 drives the torsion spring 509 to deform, when the mold is separated, the torsion spring 509 recovers elasticity to drive the rotating shaft 510 to reset, the rotating shaft 510 drives the rotating disc 508 to reset, the rotating disc 508 drives the sliding block 506 to reciprocate in the sliding groove 503 through the pin 507, and drive the slide bar 505 to reset, the slide bar 505 drives the transmission plate 504 to reset, the transmission plate 504 drives the carrier plate 501 to reset through the connecting rod 502, the carrier plate 501 drives the reset plate 3 to reset, and the reset plate 3 drives the ejector rod 2 to drive the material inside the fixed mold 1 to be demolded.

In the process of movement of the reset plate 3, the shock absorbing pad 43 absorbs the shock force between the reset plate 3 and the carrier plate 501, and transmits the aftershock to the shock absorbing spring 42, the shock absorbing spring 42 contracts in the sleeve 41, and the shock absorbing spring 42 further absorbs and filters the aftershock.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above, it will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, but that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention 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.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an injection mold's compulsory return means, includes device main part and canceling release mechanical system (5), the device main part is including deciding mould (1), ejector pin (2), reset plate (3) and chassis (6), ejector pin (2) top is located decides inside mould (1), the bottom of ejector pin (2) and reset plate (3) fixed connection, its characterized in that: the reset mechanism (5) comprises a carrier plate (501), a connecting rod (502), a sliding groove (503), a transmission plate (504), a sliding strip (505), a sliding block (506), a pin shaft (507), a turntable (508), a torsion spring (509) and a rotating shaft (510), wherein the turntable (508) is rotatably connected inside the chassis (6) through the rotating shaft (510), the torsion spring (509) is fixedly arranged inside the chassis (6), the torsion spring (509) is sleeved on the annular side surface of the rotating shaft (510), the sliding strip (505) is slidably connected inside the chassis (6), the sliding groove (503) is formed inside the sliding strip (505), the sliding block (506) is slidably connected inside the sliding groove (503), the transmission plate (504) and the connecting rod (502) are respectively provided with two numbers, the transmission plate (504) is symmetrically arranged at two ends of the sliding strip (505), and the transmission plate (504) penetrates through the upper surface of the chassis (6) through the connecting rod (502), the support plate is fixedly connected with a support plate (501) outside the chassis (6), a pin shaft (507) is fixedly arranged on the surface of a turntable (508), a sliding block (506) is rotatably connected to the surface of the turntable (508) through the pin shaft (507), and the support plate (501) is connected with a reset plate (3).

2. A forced return apparatus for an injection mold according to claim 1, wherein: the chassis (6) is provided with an opening for the connecting rod (502) to do sliding motion.

3. A forced return apparatus for an injection mold according to claim 1, wherein: the inner wall of the torsion spring (509) is tightly connected with the annular side surface of the rotating shaft (510).

4. A forced return apparatus for an injection mold according to claim 1, wherein: a strip-shaped groove for the sliding strip (505) to slide up and down is formed in the chassis (6).

5. A forced return apparatus for an injection mold according to claim 1, wherein: be provided with damper (4) between board (3) and support plate (501) reset, damper (4) include sleeve pipe (41), damping spring (42) and shock attenuation gasket (43), reset and be provided with damping spring (42) between board (3) and support plate (501), damping spring (42) outside is located to sleeve pipe (41) cover, just be provided with damping gasket (43) between damping spring (42) and support plate (501).

6. A forced return apparatus for an injection mold according to claim 1, wherein: the front surface of the chassis (6) is hinged with an access door.