CN111673990A

CN111673990A - Mold core-pulling device for automobile lamp shell and using method thereof

Info

Publication number: CN111673990A
Application number: CN202010724930.7A
Authority: CN
Inventors: 彭建平
Original assignee: Hangzhou Yongzhi Information Technology Co ltd
Current assignee: Hangzhou Yongzhi Information Technology Co ltd
Priority date: 2020-07-24
Filing date: 2020-07-24
Publication date: 2020-09-18

Abstract

The invention discloses a mold core pulling device of an automobile lamp shell and a use method thereof, and relates to the technical field of molds. Through the cooperation of the structures, the secondary core can be driven to move downwards and be separated from the blind hole of the product through the operation of the driving part, and then the primary core is driven to be separated from the side hole of the product, so that the subsequent secondary machining is avoided, and the production efficiency is improved.

Description

Mold core-pulling device for automobile lamp shell and using method thereof

Technical Field

The invention relates to the technical field of molds, in particular to a mold core-pulling device of an automobile lamp shell and a using method thereof.

Background

Most of automobile lamp shells are formed by injection molding through an injection mold, the mold opening process is generally as follows, and after a product is formed in a mold cavity in the mold, a movable mold moves to be separated from a fixed mold, so that the mold cavity is opened, and the product is taken out.

For example, the cited document 1, chinese patent CN201721356044.3, discloses a secondary core-pulling mechanism for a reflector of a front fog lamp of an automobile, which is published on the granted notice date: 20180424, when the invention is used, firstly, the oil cylinder is used to draw the core to separate the core from the inner surface of the blind hole of the mounting post, then the inclined guide post is used to bring the slide block and the core out integrally, so as to realize the quick and effective separation of the slide block and the core from the product, and as disclosed in the cited document 2, the Chinese patent CN201821402896.6, the invention has the following notice: 20190426, the lampshade in the invention is a curved surface shell, a screw thread connecting part which is matched with the sealing edge is fixed on the lampshade, one end of the screw thread connecting part is provided with an installation baffle ring, one side surface of the installation baffle ring is provided with a sealing ring which is matched and sealed with the annular sealing groove, the edge of the other side surface of the installation baffle ring is provided with a surrounding edge, and the surrounding edge is provided with a plurality of fixed blind holes.

In the prior art, when a product is provided with a side hole, lateral core pulling is usually performed through a mechanical structure such as an inclined guide pillar or a hydraulic oil cylinder, however, for some products with blind holes on the inner wall of the side hole, core pulling mechanisms with simple structures such as the existing inclined guide pillar or the hydraulic oil cylinder cannot simultaneously achieve core pulling of the side hole and the blind hole in the side hole, and further generally need to be completed through methods such as secondary processing.

Disclosure of Invention

The invention aims to provide a mold core pulling device for an automobile lamp shell and a using method thereof, which can drive a secondary core to move downwards and separate from a blind hole of a product through the operation of a driving part, and then drive a main core to separate from a side hole of the product, thereby avoiding subsequent secondary machining, improving the production efficiency, and solving the problems that the core pulling of the side hole and the blind hole in the side hole cannot be simultaneously realized by the existing core pulling mechanisms with simple structures, such as an inclined guide post or a hydraulic oil cylinder, and further the core pulling mechanism is generally finished by methods of secondary machining and the like, thereby wasting time and labor.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a device is loosed core to mould of car light shell, is in including last mould and lower mould that is used for product injection moulding, and sets up the device of loosing core of last mould, the device of loosing core is including seting up the core-pulling hole of going up the mould side, it passes through to go up the mould core-pulling hole sliding connection has and is used for the fashioned main core of product side opening, the main core deviates from one side of product is seted up flutedly, the surface of main core seted up with the through-hole that the recess is linked together, the main core passes through-hole sliding connection has and is used for the fashioned secondary core of product blind hole.

The core pulling device further comprises a driving portion and a transmission portion, and the secondary core is driven to be separated from the blind hole of the product firstly and then driven to be separated from the main core through the driving portion and under the action of the transmission portion.

Preferably, transmission portion include by drive division drive pivoted cover piece, and fixed connection be in concave style of calligraphy pole of recess inslot, the slider has been cup jointed on the surface of concave style of calligraphy pole, the surface of slider articulates there is the rocking arm, the surface of cover piece seted up with rocking arm sliding connection's logical groove, the rocking arm is kept away from the one end fixedly connected with limiting plate of slider, the surface cover of rocking arm is equipped with extension spring, extension spring's both ends respectively with the cover piece with opposite side fixed connection between the limiting plate, the fixed surface of slider is connected with the connecting rod, secondary core fixed connection is in the tip of connecting rod.

Preferably, the driving part comprises a mounting plate fixedly connected to the inner wall of the core-pulling hole, a motor is fixedly mounted on the surface of the mounting plate, and the sleeve block is fixedly connected to an output shaft of the motor.

Preferably, the inner wall of the core pulling hole is provided with a limiting groove, the outer wall of the main core is fixedly connected with a limiting sliding block, and the limiting sliding block is connected in the groove of the limiting groove in a sliding manner.

Preferably, the hole of the coring hole is exposed out of the side edge of the upper die.

In addition, the invention also provides a using method: a use method of a mold core-pulling device of an automobile lamp shell comprises the following steps:

s1: after the product is formed, a driving part is started, and under the action of the transmission part, the secondary core is driven to be separated from the blind hole of the product firstly, and then the primary core is driven to be separated from the side hole of the product;

s2: and finally, separating the upper die from the lower die and taking out the product.

Compared with the prior art, the invention has the following beneficial effects:

firstly, when the core pulling machine is used for pulling cores, the secondary core can be driven to move downwards and be separated from the blind hole of a product through the operation of the driving part, and then the main core is driven to be separated from the side hole of the product, so that the subsequent secondary machining is avoided, and the production efficiency is improved.

Secondly, when the motor output shaft in the figure 1 cannot be self-locked, the extension spring is used for providing elastic restoring force towards the direction of the sliding block, and the main mold core and the secondary mold core can be kept still, so that the injection molding processing at the time is facilitated.

The transverse moving distance of the limiting slide block is limited through the limiting groove, and then the transverse moving distance of the main core is limited, so that the phenomenon that the main core generates extrusion force on a product and the product is crushed under the condition that the transverse moving distance of the main core is not limited when the figure 1 moves to the state shown in the figure 3 is avoided.

Drawings

FIG. 1 is a first state diagram of the structure of the present invention and is taken as a front view;

FIG. 2 is a rear view of the present invention corresponding to the partial structure of FIG. 1;

FIG. 3 is a second state diagram of the structure of the present invention;

fig. 4 is a third state diagram of the structure of the present invention.

In the figure: 1-product, 2-upper die, 3-lower die, 4-core-pulling hole, 5-main core, 6-groove, 7-secondary core, 8-set block, 9-concave rod, 10-slide block, 11-rotating arm, 12-limit plate, 13-extension spring, 14-connecting rod, 15-mounting plate, 16-motor, 17-limit groove and 18-limit slide block.

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.

Referring to fig. 1 to 4, the present invention provides a technical solution: a core pulling device for a mold of an automobile lamp shell comprises an upper mold 2 and a lower mold 3 used for injection molding of a product 1, wherein the product 1 refers to the automobile lamp shell or other products 1 needing to be processed with side holes and blind holes, and the core pulling device is arranged on the upper mold 2 and comprises a core pulling hole 4 arranged on the side surface of the upper mold 2, the upper mold 2 is connected with a main core 5 used for forming the side holes of the product 1 in a sliding mode through the core pulling hole 4, one side, away from the product 1, of the main core 5 is provided with a groove 6, the surface of the main core 5 is provided with a through hole communicated with the groove 6, the main core 5 is connected with a secondary core 7 used for forming the blind holes of the product 1 in a sliding mode through the through hole, the core pulling device further comprises a driving part and a transmission part, when the product 1 is formed and the core is pulled, the state shown in figure 1 begins, the driving part drives the secondary core 7 to, and then, driving the main core 5 to be separated from the side hole of the product 1, and finally, separating the upper die 2 from the lower die 3 and taking out the product 1, so that the one-time core pulling effect of the side hole and the blind hole in the side hole of the product 1 can be realized through one driving part.

Further, during core pulling, in order to enable the transmission part to drive the secondary core 7 to be separated from the blind hole of the product 1 firstly and then drive the main core 5 to be separated from the side hole of the product 1 under the operation of the driving part, the transmission part specifically comprises a sleeve block 8 driven by the driving part to rotate and a concave rod 9 fixedly connected in a groove of the groove 6, a sliding block 10 is sleeved on the surface of the concave rod 9, a rotating arm 11 is hinged on the surface of the sliding block 10, a through groove in sliding connection with the rotating arm 11 is formed on the surface of the sleeve block 8, a limiting plate 12 is fixedly connected to one end, away from the sliding block 10, of the rotating arm 11, an extension spring 13 is sleeved on the surface of the rotating arm 11, two end parts of the extension spring 13 are respectively and fixedly connected with the opposite sides between the sleeve block 8 and the limiting plate 12, a connecting rod 14 is fixedly connected to the surface of the sliding block 10, starting from the state shown in fig. 1, the output shaft of the motor 16 rotates clockwise to drive the sleeve block 8 to rotate clockwise, the sleeve block 8 rotates clockwise to drive the rotating arm 11 to rotate clockwise, the rotating arm 11 rotates clockwise and provides elastic restoring force to the slider 10 through the extension spring 13 to drive the slider 10 to move down along the surface of the concave-shaped rod 9 and move to the state shown in fig. 3, the slider 10 moves down and drives the secondary core 7 to move down and separate from the blind hole of the product 1 through the connecting rod 14 in the process of moving to fig. 3, and then the output shaft of the motor 16 continues to rotate clockwise to drive the slider 10 to move transversely to the state shown in fig. 4, and the slider 10 moves transversely and separates from the side hole of the product 1 through the concave-shaped rod 9 in the process of moving to fig. 4, so as to drive the primary core 5 to move transversely and separate from the side hole of the product.

Furthermore, in order to drive the sleeve block 16 to rotate, the driving part comprises the following components, the driving part comprises an installation plate 15 fixedly connected to the inner wall of the coring hole 4, a motor 16 is fixedly installed on the surface of the installation plate 15, the sleeve block 8 is fixedly connected to an output shaft of the motor 16, and the sleeve block 8 can be driven to rotate through the rotation of the output shaft of the motor 16.

Furthermore, a limiting groove 17 is formed in the inner wall of the core pulling hole 4, a limiting slide block 18 is fixedly connected to the outer wall of the main core 5, the limiting slide block 18 is slidably connected in a groove of the limiting groove 17, the transverse moving distance of the limiting slide block 18 is limited through the limiting groove 17, then the transverse moving distance of the main core 5 is also limited, and therefore when the main core 1 moves to the state shown in fig. 3, under the condition that the transverse moving distance of the main core 5 is not limited, the main core 5 can generate an extrusion force on the product 1, and the phenomenon that the product 1 is crushed is generated.

Furthermore, in order to conveniently overhaul the motor 16 in the core-pulling hole 4, the hole opening of the core-pulling hole 4 is exposed out of the side edge of the upper die 2, and an operator can overhaul the motor 16 through the exposed hole opening.

Referring to fig. 1 to 4, the present invention provides a method of using: a use method of a mold core-pulling device of an automobile lamp shell comprises the following steps:

s1: after the product 1 is formed, the driving part is started, and under the action of the transmission part, the secondary mold core 7 is driven to be separated from the blind hole of the product 1 firstly, and then the primary mold core 5 is driven to be separated from the side hole of the product 1;

s2: and finally, separating the upper die 2 and the lower die 3 and taking out the product 1.

The working principle is as follows: when the product 1 is formed and subjected to core pulling, the product 1 in the invention refers to a vehicle lamp shell or other products 1 needing to be processed with side holes and blind holes, starting from the state shown in fig. 1, the output shaft of the motor 16 rotates clockwise to drive the sleeve block 8 to rotate clockwise, the sleeve block 8 rotates clockwise to drive the rotating arm 11 to rotate clockwise, the rotating arm 11 rotates clockwise and provides elastic restoring force towards the direction of the slider 10 through the tension spring 13, the slider 10 is driven to move downwards along the surface of the concave-shaped rod 9 and move to the state shown in fig. 3, the slider 10 moves downwards and is driven to move downwards to be separated from the blind hole of the product 1 through the connecting rod 14 in the process that fig. 1 moves to fig. 3, and then the slider 10 is driven to move transversely to the state shown in fig. 4 along with the continuous clockwise rotation of the output shaft of the motor 16, in the process of moving to the figure 4, the sliding block 10 moves transversely and drives the main core 5 to move transversely and separate from the side hole of the product 1 through the concave-shaped rod 9, and finally the upper die 2 and the lower die 3 are separated and the product 1 is taken out, so that the one-time core pulling effect of the side hole and the blind hole in the side hole of the product 1 can be realized through one driving part;

before the product 1 is molded, as shown in fig. 4, the upper mold 2 and the lower mold 3 are closed, and then the motor 16 rotates counterclockwise to drive the main core 5 to firstly move transversely to the state shown in fig. 3, and then drive the secondary core 7 to move upwards to the state shown in fig. 1, at this time, injection molding can be performed, and at this time, when the output shaft of the motor 16 in fig. 1 cannot be self-locked, the tension spring 13 is used for providing elastic restoring force towards the direction of the slider 10, so that the main core 5 and the secondary core 7 can be kept still, and the injection molding processing at this time can be conveniently performed.

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 a mould device of loosing core of car light shell, is in including last mould (2) and lower mould (3) that are used for product (1) injection moulding, and set up the device of loosing core of last mould (2), its characterized in that: the core pulling device comprises a core pulling hole (4) formed in the side face of the upper die (2), the upper die (2) is connected with a main core (5) used for forming the side hole of the product (1) in a sliding mode through the core pulling hole (4), one side, away from the product (1), of the main core (5) is provided with a groove (6), the surface of the main core (5) is provided with a through hole communicated with the groove (6), and the main core (5) is connected with a secondary core (7) used for forming the blind hole of the product (1) in a sliding mode through the through hole;

the core pulling device further comprises a driving portion and a transmission portion, the secondary core (7) is driven to be separated from the blind hole of the product (1) firstly through the driving portion under the action of the transmission portion, and then the main core (5) is driven to be separated from the side hole of the product (1).

2. The mold core-pulling device for the automobile lamp shell according to claim 1, characterized in that: the transmission part comprises a sleeve block (8) driven by the driving part to rotate and a concave rod (9) fixedly connected in the groove of the groove (6), the surface of the concave-shaped rod (9) is sleeved with a sliding block (10), the surface of the sliding block (10) is hinged with a rotating arm (11), the surface of the sleeve block (8) is provided with a through groove which is connected with the rotating arm (11) in a sliding way, one end of the rotating arm (11) far away from the sliding block (10) is fixedly connected with a limiting plate (12), an extension spring (13) is sleeved on the surface of the rotating arm (11), two end parts of the extension spring (13) are respectively and fixedly connected with the opposite sides between the sleeve block (8) and the limiting plate (12), the surface of the sliding block (10) is fixedly connected with a connecting rod (14), and the secondary mold core (7) is fixedly connected to the end part of the connecting rod (14).

3. The mold core-pulling device for the automobile lamp shell according to claim 2, characterized in that: the driving part comprises a mounting plate (15) fixedly connected to the inner wall of the coring hole (4), a motor (16) is fixedly mounted on the surface of the mounting plate (15), and the sleeve block (8) is fixedly connected to an output shaft of the motor (16).

4. The mold core-pulling device for the automobile lamp shell according to any one of claims 1, 2 or 3, characterized in that: the inner wall of the core-pulling hole (4) is provided with a limiting groove (17), the outer wall of the main core (5) is fixedly connected with a limiting sliding block (18), and the limiting sliding block (18) is connected in the groove of the limiting groove (17) in a sliding mode.

5. The mold core-pulling device for the automobile lamp shell according to claim 1, characterized in that: the hole opening of the core drawing hole (4) is exposed out of the side edge of the upper die (2).

6. The use method of the mold core-pulling device for the automobile lamp shell according to claim 1 is characterized by comprising the following steps:

s1: after the product (1) is formed, a driving part is started, and under the action of the transmission part, the secondary mold core (7) is driven to be separated from the blind hole of the product (1) firstly, and then the main mold core (5) is driven to be separated from the side hole of the product (1);

s2: and finally, separating the upper die (2) from the lower die (3) and taking out the product (1).