CN113650247B

CN113650247B - Instrument board decoration mould and injection molding machine of thimble under tunnel

Info

Publication number: CN113650247B
Application number: CN202111007650.5A
Authority: CN
Inventors: 王长喜; 罗威; 曹湛辉; 陈垚
Original assignee: Foshan Shunde East Asia Auto Parts Co ltd
Current assignee: Foshan Shunde East Asia Auto Parts Co ltd
Priority date: 2021-08-30
Filing date: 2021-08-30
Publication date: 2023-05-16
Anticipated expiration: 2041-08-30
Also published as: CN113650247A

Abstract

The invention provides an instrument board decorating part mould of a tunnel lower thimble and an injection molding machine, wherein the mould comprises a core pulling device, a core pulling device and a cavity, wherein the core pulling device comprises an inclined guide column fixing block, an inclined guide column and a core pulling sliding block; the inclined guide pillar fixed block is connected with the front template; the inclined guide pillar is connected with the inclined guide pillar fixing block; the core-pulling sliding block is in sliding fit with the inclined guide pillar and driven by the inclined guide pillar to move along the tunnel of the rear template, and a clearance hole is formed in the core-pulling sliding block; and a deep cavity bone position thimble opposite to the deep cavity bone position on the instrument board decoration piece penetrates through the clearance hole. According to the invention, the hollow hole is formed in the core-pulling sliding block for the thimble to pass through, so that the simultaneous core pulling of the core-pulling sliding block and ejection of a product are not influenced, the deep cavity bone near the buckling position on the instrument board decorating part can be smoothly demoulded under the ejection action of the thimble, and the ejection and the strain of the deep cavity bone are effectively avoided.

Description

Instrument board decoration mould and injection molding machine of thimble under tunnel

Technical Field

The invention relates to the field of automobile molds, in particular to an instrument board decorating part mold of a tunnel lower thimble and an injection molding machine.

Background

With the development of economy and the improvement of living standard, people do not simply pursue the performance, safety and oil-saving effect of the vehicle, and the aesthetic feeling of the appearance is also more and more focused; for the vehicle, the instrument board on the instrument board is an important functional part and a decoration, the instrument board comprises an instrument board body, a plurality of holes for installing various instrument parts are formed in the instrument board body, the instrument board body is complex in structure, the die design structure is complex, and the production qualification rate of the instrument board body is directly influenced. As shown in FIG. 1, a partial structural view of an instrument panel trim has a plurality of deep bead locations thereon, and a plurality of fastening locations are located adjacent to the deep bead locations. For the buckling position on the instrument board decorating part with a complex structure, a tunnel type core-pulling sliding block is used for demolding. Because the tunnel type core pulling structure needs to occupy a certain position, an auxiliary ejection mechanism cannot be arranged at a position corresponding to a deep cavity bone position close to the buckling position of the mold, and accordingly the instrument board decoration is white in top and is damaged by pulling.

Disclosure of Invention

The invention aims to provide an instrument board decorating part mould and an injection molding machine for a tunnel lower thimble, which are used for solving the technical problem that the existing mould is easy to cause white ejection and strain when manufacturing an instrument board decorating part with a deep cavity bone position and a buckling position.

In order to achieve the above purpose, the technical scheme of the invention is as follows:

an instrument panel trim mold for a tunnel lower thimble, comprising:

the front template and the rear template are oppositely arranged, a mold cavity is arranged between the front template and the rear template, and the mold cavity is used for product molding;

the core pulling device comprises an inclined guide column fixing block, an inclined guide column and a core pulling sliding block;

the inclined guide pillar fixed block is connected with the front template;

the inclined guide pillar is connected with the inclined guide pillar fixing block;

the core pulling sliding block comprises a body part, a forming part and a guiding part, wherein the forming part and the guiding part are respectively arranged at two ends of the body part; the body part is in sliding fit with the core pulling tunnel on the rear template, the body part is provided with a clearance hole, the forming part is used for forming a buckling position on an instrument panel decoration, and the guide part is in sliding fit with the inclined guide post;

the ejection device comprises an ejector plate and a deep cavity bone position ejector pin; the deep cavity bone position thimble penetrates through the clearance hole and is opposite to the deep cavity bone position on the instrument board decorating part.

Further, the distance that the core pulling sliding block moves along the first direction under the drive of the inclined guide pillar is smaller than the width difference between the clearance hole and the deep cavity bone position thimble in the first direction.

Further, the guide part of the core pulling slide block is provided with a first end face, and the body part is connected to the first end face;

when the first end face abuts against the rear template, a safety distance D1 is arranged between the deep cavity bone position thimble and the side wall, close to the guide part, on the clearance hole.

Further, a plurality of rear mold inserts are embedded on the rear mold plate, and the top surface of each rear mold insert is identical to the outline of the deep cavity bone position of the instrument board decoration;

the core-pulling tunnel is arranged on the rear die insert, and the deep cavity bone position thimble penetrates through the rear die insert.

Further, the rear mold insert is provided with an ejector pin hole for the deep cavity bone position ejector pin to pass through, and the ejector pin hole is divided into an upper section and a lower section by the clearance hole;

the diameter of the lower section of the ejector pin hole is larger than that of the deep cavity bone position ejector pin.

Further, the ejection device further comprises a fixed pressing block, a mounting hole is formed in the bottom of the thimble plate, and the fixed pressing block is mounted in the mounting hole;

the lower end of the deep cavity bone position thimble is provided with a hanging table, the top of a mounting hole of the thimble plate is provided with a countersunk hole matched with the hanging table, and the hanging table of the deep cavity bone position is fixed in the countersunk hole by the fixing pressing block;

and a plurality of maintenance holes are formed in the bottom plate of the instrument board decoration die, and the maintenance holes are opposite to the fixed pressing blocks.

The invention also provides an injection molding machine, which comprises the instrument board decorating part die of the tunnel lower thimble.

The beneficial effects of the invention are as follows: through setting up a clearance hole on the slider of loosing core and supplying the thimble to pass, do not influence the slider of loosing core and ejecting product and go on simultaneously, make the deep cavity bone that is close to the knot position on the instrument board decoration can be demolded smoothly under the ejecting effect of thimble, avoided the deep cavity bone position to appear ejecting white, the strain effectively.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiments of the invention and together with the description serve to explain the invention and do not constitute a limitation on the invention. In the drawings:

FIG. 1 is a partial block diagram of an instrument panel trim;

FIG. 2 is a longitudinal cross-sectional view of the instrument panel trim mold of the tunnel lower ejector pin of the present invention;

FIG. 3 is an enlarged view at A in FIG. 2;

FIG. 4 is a block diagram of a core-pulling slider of the present invention;

fig. 5 is a longitudinal cross-sectional view of a rear mold insert of the present invention.

Wherein: 1. instrument board decoration, 11, deep cavity bone position, 12, hole site, 2, front template, 3, back template, 4, core pulling device, 5, ejecting device, 6, bottom plate, 31, back mould mold insert, 311, core pulling tunnel, 312, upper segment, 313, lower segment, 41, oblique guide pillar fixed block, 42, oblique guide pillar, 43, core pulling slide block, 431, body part, 432, guide part, 433, shaping part, 4311, clearance hole, 4321, first end face, 51, thimble board, 52, deep cavity bone position thimble, 53, fixed briquetting, 521, hanging table, 61, maintenance hole.

Detailed Description

The technical solution provided by the present invention is described in more detail below with reference to fig. 1-5.

As shown in fig. 2, an instrument panel decoration mold of a tunnel lower thimble includes: the front template 2 and the rear template 3 are oppositely arranged, and a mold cavity is formed between the front template 2 and the rear template 3 and is used for product molding;

the core pulling device 4, as shown in fig. 3, comprises an inclined guide pillar fixing block 41, an inclined guide pillar 42 and a core pulling sliding block 43;

the inclined guide pillar fixing block 41 is connected with the front template 2;

the inclined guide pillar 42 is connected with the inclined guide pillar fixing block 41;

as shown in fig. 4, the core-pulling slider 43 includes a main body 431, a forming portion 433 and a guide portion 432 respectively disposed at both ends of the main body 431; the body portion 431 is in sliding fit with the core pulling tunnel on the rear template 3, a clearance hole 4311 is formed in the body portion 431, the forming portion 433 is used for forming a buckling position on the instrument panel decoration 1, and the guide portion 432 is in sliding fit with the inclined guide post 42;

the ejection device 5 comprises an ejector plate 51 and a deep cavity bone position ejector pin 52; the deep cavity bone position thimble 52 is arranged through the clearance hole 4311 and is opposite to the deep cavity bone position on the instrument board decoration 1.

The opening process of the instrument board decorating part mould of the tunnel lower thimble is as follows:

the front die plate 2 moves forward in the die opening process, and drives the inclined guide column fixing block 41 and the inclined guide column 42 to move forward. Under the guiding action of the oblique guide post 42, the core-pulling sliding block 43 moves forwards and in the first direction, and the forming part 433 of the core-pulling sliding block 43 is separated from the buckling position of the instrument panel decoration 1, so that the release is completed. Simultaneously, the deep cavity bone position ejector pin 52 is ejected upwards under the drive of the ejector plate 51, and the deep cavity bone position of the instrument board decoration 1 is assisted to be separated from the rear template 3.

According to the instrument board decorating part mould for the tunnel lower ejector pin, the hollow clearance hole 4311 is formed in the core-pulling sliding block 43 for the ejector pin to penetrate through, core pulling of the core-pulling sliding block 43 is not influenced, core pulling and product ejection are simultaneously carried out, deep cavity bone near a buckling position on the instrument board decorating part 1 can be smoothly demoulded under the ejection action of the ejector pin, and ejection and damage of the deep cavity bone are effectively avoided.

In order to avoid collision between the core-pulling slider 43 and the deep cavity bone position thimble 52, as shown in fig. 3, the distance that the core-pulling slider 43 moves along the first direction under the driving of the oblique guide pillar 42 is smaller than the width difference between the clearance hole 4311 and the deep cavity bone position thimble 52 in the first direction, wherein the direction B in fig. 3 indicates the first direction, and the first direction is the same as the direction of the core-pulling tunnel on the rear template 3. Namely, during the mold opening process, the deep cavity bone position thimble 52 is always located in the clearance hole 4311 during the sliding process of the core pulling slide block 43 along the first direction.

The guide portion 432 of the core back slider 43 has a first end surface 4321, and the body portion 431 is connected to the first end surface 4321; when the first end surface 4321 abuts against the rear template 3, a safety distance D1 is provided between the deep cavity bone position thimble 52 and the side wall of the clearance hole 4311 near the guiding portion 432. Namely, the propping of the core-pulling sliding block 43 and the rear template 3 has a limiting effect on the core-pulling sliding block 43, so that the side wall of the clearance hole 4311 is always not contacted with the deep cavity bone position thimble 52, and the core-pulling sliding block 43 is prevented from colliding with the deep cavity bone position thimble 52.

Because the core-pulling slide block 43 and the core-pulling tunnel need to be moved relatively frequently, the abrasion is easy, and the cost for replacing the whole rear template 3 is high, a plurality of rear mold inserts 31 are embedded on the rear template 3, as shown in fig. 5, the top surface of the rear mold inserts 31 is the same as the outline of the deep cavity bone position of the instrument panel decoration 1; the core-pulling tunnel 311 is disposed on the rear mold insert 31, and the rear mold insert is provided with a thimble hole through which the deep cavity bone thimble 52 passes, and the deep cavity bone thimble 52 passes through the rear mold insert.

Wherein the top pinhole is divided into an upper section 312 and a lower section 313 by the clearance hole 4311; the diameter of the lower section 313 of the pin hole is larger than the diameter of the deep cavity bone position pin 52. Because the deep cavity bone position ejector pins 52 and the ejector pin holes and the core-pulling sliding blocks 43 and the core-pulling tunnel frequently rub, some scraps are inevitably generated. The diameter of the lower section of the ejector pin hole is set to be larger than the diameter of the deep cavity bone position ejector pin 52, so that a stroke chip clearance between the inner wall of the ejector pin hole and the deep cavity bone position ejector pin 52 can be formed, chips can fall from the chip clearance, and the influence on subsequent relative movement is avoided. Especially, as the core-pulling slider 43 moves back and forth above the lower section of the clearance hole 4311, the core-pulling slider 43 and the core-pulling tunnel are more likely to fall into the clearance hole 4311. The core-pulling sliding block 43 can be prevented from pushing scraps out to the forming cavity during die assembly, and the product forming is prevented from being influenced.

In order to avoid the influence of too large clearance hole 4311 on the core-pulling slide block 43 on the strength of the core-pulling slide block 43, the diameter of the deep cavity bone position thimble 52 with smaller diameter needs to be adopted, and the deep cavity bone position thimble 52 is easy to deform after long-time use and needs to be replaced in time so as not to influence the quality of injection molding parts. In order to facilitate replacement of the deep cavity bone position ejector pin 52, the ejector device 5 further comprises a fixed pressing block 53, a mounting hole is formed in the bottom of the ejector plate 51, and the fixed pressing block 53 is mounted in the mounting hole; the lower end of the deep cavity bone position thimble 52 is provided with a hanging table 521, the top of a mounting hole of the thimble plate 51 is provided with a countersunk hole matched with the hanging table 521, and the hanging table 521 of the deep cavity bone position is fixed in the countersunk hole by the fixing pressing block 53; the bottom plate 6 of the instrument board decoration mould is provided with a plurality of maintenance holes 61, and the maintenance holes 61 are opposite to the fixed pressing blocks 53. When the deep cavity bone position thimble 52 is disassembled, the fixing pressing block 53 is disassembled from the lower part of the die, and the deep cavity bone position thimble 52 can be removed.

The embodiment also provides an injection molding machine, which comprises the instrument board decorating part die of the tunnel lower thimble.

In the description of the present invention, it should be understood that the terms "vertical," "transverse," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, merely to facilitate description of the present invention and simplify the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the protection of the present invention.

If the terms "first," "second," etc. are used herein to define a part, those skilled in the art will recognize that: the use of "first" and "second" is for convenience only as well as for simplicity of description, and nothing more than a particular meaning of the terms is intended to be used unless otherwise stated.

The present invention is not limited to the above-described embodiments, but, if various modifications or variations of the present invention are not departing from the spirit and scope of the present invention, the present invention is intended to include such modifications and variations as fall within the scope of the claims and the equivalents thereof.

Claims

1. An instrument panel decoration mould of thimble under tunnel, its characterized in that includes:

the inclined guide pillar fixed block is connected with the front template;

the ejection device comprises an ejector plate and a deep cavity bone position ejector pin; the deep cavity bone position thimble penetrates through the clearance hole and is opposite to the deep cavity bone position on the instrument board decoration;

the core pulling slide block is used for simultaneously pulling core and ejecting a product;

the distance that the core pulling sliding block moves along the first direction under the drive of the inclined guide post is smaller than the width difference between the clearance hole and the deep cavity bone position thimble in the first direction;

the guide part of the core-pulling sliding block is provided with a first end face, and the body part is connected to the first end face;

when the first end face is propped against the rear template, a safety distance D1 is arranged between the deep cavity bone position thimble and the side wall, close to the guide part, on the clearance hole;

the rear template is embedded with a plurality of rear mold inserts, and the top surface of each rear mold insert is identical to the outline of the deep cavity bone position of the instrument board decoration;

the core-pulling tunnel is arranged on the rear die insert, and the deep cavity bone position thimble penetrates through the rear die insert;

the rear mold insert is provided with an ejector pin hole for the deep cavity bone position ejector pin to pass through, and the ejector pin hole is divided into an upper section and a lower section by the clearance hole;

2. The instrument panel trim mold of a tunnel lower thimble according to claim 1, wherein:

the ejection device further comprises a fixed pressing block, a mounting hole is formed in the bottom of the thimble plate, and the fixed pressing block is mounted in the mounting hole;

3. Injection molding machine, characterized in that it comprises a mold according to any one of claims 1 to 2.