CN215512065U - Injection mold for automobile exterior trimming part with honeycomb structure - Google Patents

Abstract

The utility model discloses an injection mold for an automobile exterior trimming part with a honeycomb structure, which comprises: the automotive exterior trim part comprises a plate A, a plate B and an insert, wherein the insert is provided with a honeycomb forming part which is used for forming a part of honeycomb structures on the automotive exterior trim part; a carrier plate; the bottom plate is used for driving the bearing plate to move; the ejector pin plate is provided with ejector pins, and the ejector pins are connected with ejector blocks; two ends of the driving spring are respectively connected with the plate B and the ejector plate; and the two ends of the stroke limiting block are provided with a first buckling part and a second buckling part, the first buckling part is fixedly connected with the bearing plate, and the second buckling part is in sliding fit with the limiting groove on the B plate. According to the injection mold, the mold and the automobile exterior trimming part with the honeycomb structure are separated step by arranging the insert and the plate B connected with the driving spring, so that the coating force on the mold is reduced, and the problem of difficult ejection of the automobile exterior trimming part with the honeycomb structure is solved.

Description

Injection mold for automobile exterior trimming part with honeycomb structure

Technical Field

The utility model relates to the technical field of automobile exterior trim part injection molds, in particular to an injection mold for an automobile exterior trim part with a honeycomb structure.

Background

The automobile exterior trimming parts have the functions of beautifying and reducing wind resistance, and the inner sides of some automobile exterior trimming parts are constructed into honeycomb shapes in order to enhance the strength of the automobile exterior trimming parts. The partial structure of a side skirt as shown in fig. 1 is one of the problems that often plague designers in injection mold design due to the fact that the ribs 11 of the honeycomb structure are too deep and the honeycomb product is subject to ejection and cooling. The product has too deep bone position, so that the packing force is too large to cause ejection difficulty. Due to the difficult ejection, designers need to design a complex ejection structure, so that a cooling water path is difficult to arrange on a mold corresponding to the honeycomb structure, and the cooling is difficult.

SUMMERY OF THE UTILITY MODEL

The utility model provides an injection mold for an automobile exterior trimming part with a honeycomb structure, which can at least solve the problems of difficult ejection and difficult cooling when the automobile exterior trimming part with the honeycomb structure is demolded.

An injection mold for an automobile exterior trim with a honeycomb structure, comprising:

the plate A is provided with a front mold core;

the plate B is provided with a rear mold core, and a molding cavity is formed between the front mold core and the rear mold core;

the insert penetrates through the rear mold core; the insert is provided with a honeycomb forming part, and the honeycomb forming part is used for forming a part of honeycomb structures on the automobile exterior trimming parts;

a carrier plate connected to the insert;

the bottom plate is connected with the bearing plate and is used for driving the bearing plate to move;

the ejector pin plate is provided with ejector pins, and the ejector pins are connected with ejector blocks;

two ends of the driving spring are respectively connected with the plate B and the ejector plate;

and the two ends of the stroke limiting block are provided with a first buckling part and a second buckling part, the first buckling part is fixedly connected with the bearing plate, and the second buckling part is in sliding fit with the limiting groove on the B plate.

When the injection mold is opened, the plate B tightly supports the plate A under the action of the elastic force of the driving spring, so that the rear mold core is not separated from the automobile exterior trimming part with the honeycomb structure temporarily, and the bearing plate moves backwards along with the bottom plate to drive the insert to be separated from the automobile exterior trimming part with the honeycomb structure. After the insert is withdrawn, the wrapping force of the automobile exterior trimming part with the honeycomb structure on the mold is reduced by 70-80%. The bearing plate continues to move backwards until the second buckling part abuts against the edge of the limiting groove on the B plate, the B plate is driven to move backwards, and meanwhile, the ejection block ejects the automobile exterior trimming part with the honeycomb structure, so that the rear mold core is separated from the automobile exterior trimming part with the honeycomb structure. According to the injection mold, the mold and the automobile exterior trimming part with the honeycomb structure are separated step by arranging the insert and the plate B connected with the driving spring, so that the coating force on the mold is reduced, and the problem of difficult ejection of the automobile exterior trimming part with the honeycomb structure is solved.

The ejection blocks are distributed at the edge of the forming cavity.

And a water conveying pipeline is arranged in the insert.

The injection mold also comprises a limit button machine which comprises a swing arm, a convex block and a stroke control rod; one end of the swing arm is hinged with the plate A, and the other end of the swing arm is provided with a hook part and a protruding part; the lug is arranged on the B plate; one end of the stroke control rod is connected with the bearing plate, and the other end of the stroke control rod is provided with a push block; when the bearing plate is in a first stroke, the lug is buckled with the hook part of the swing arm, and the plate A is attached to the plate B; when the bearing plate is in the second stroke, the push block of the stroke control rod is abutted to the boss of the swing arm, the hook part is separated from the bump, and the plate A is separated from the plate B.

A countersunk hole is formed in the swing arm, and a connecting bolt and a compression spring are arranged in the countersunk hole; and two ends of the compression spring are respectively abutted against the head of the connecting bolt and the step of the counter bore.

The counter bore has a first through hole and a second through hole, wherein a head of the connecting bolt is disposed in the first through hole; the second through hole is a strip-shaped hole.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the utility model and together with the description serve to explain the utility model without limiting the utility model. In the drawings:

fig. 1 is a partial structural view of an automobile exterior trim with a honeycomb structure;

FIG. 2 is a longitudinal sectional view of an injection mold for honeycomb-structured automobile exterior parts according to the present invention;

FIG. 3 is a schematic view of an insert of the present invention;

FIG. 4 is a cross-sectional view of the injection mold of the present invention at a limit buckle machine;

FIG. 5 is a schematic view of the limit buckle machine of the present invention in a first travel condition;

fig. 6 is a schematic view of the limit buckle machine in a second travel state of the present invention.

Wherein: 1. the automobile exterior trim part with the honeycomb structure comprises a honeycomb structure, 11, a bone position, 2, an injection mold, 21, a plate A, 211, a front mold core, 22, a plate B, 221, a rear mold core, 222, a limiting groove, 23, an insert, 231, a honeycomb forming part, 232, a water conveying pipeline, 24, a bearing plate, 25, a bottom plate, 26, an ejector plate, 261, an ejector pin, 262, an ejector block, 27, a driving spring, 28, a stroke limiting block, 281, a first buckling part, 282, a second buckling part, 29, a limiting buckle machine, 291, a swing arm, 2911, a hook part, 2912, a convex part, 2913, a counter bore, 29131, a first through hole, 29132, a second through hole, 2914, a connecting bolt, 2915, a compression spring, 292, a convex block, 293, a stroke control rod, 2931 and a pushing block.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

As shown in fig. 2, the injection mold for an automobile exterior trim with a honeycomb structure of the present invention comprises: an A plate 21 on which a front mold core 211 is arranged; the B plate 22 is provided with a rear mold core 221, and a molding cavity is formed between the front mold core 211 and the rear mold core 221; an insert 23, which penetrates through the rear mold core 221; as shown in fig. 3, the insert 23 has a honeycomb molding portion 231, and the honeycomb molding portion 231 is used for molding the bone site 11 on the automobile exterior trim 1; a carrier plate 24 connected to the insert 23; the bottom plate 25 is connected with the bearing plate 24 and is used for driving the bearing plate 24 to move; the ejector plate 26 is provided with an ejector pin 261, and the ejector pin 261 is connected with an ejector block 262; a drive spring 27 having both ends connected to the B plate 22 and the ejector plate 26, respectively; and a stroke limiting block 28, two ends of which are provided with a first buckling part 281 and a second buckling part 282, wherein the first buckling part 281 is fixedly connected with the bearing plate 24, and the second buckling part 282 is in sliding fit with the limiting groove 222 on the B plate 22.

When the injection mold is opened, the plate B tightly supports the plate A under the action of the elastic force of the driving spring, so that the rear mold core is not separated from the automobile exterior trimming part with the honeycomb structure temporarily, and the bearing plate moves backwards along with the bottom plate to drive the insert to be separated from the automobile exterior trimming part with the honeycomb structure. After the insert is withdrawn, the wrapping force of the automobile exterior trimming part with the honeycomb structure on the mold is reduced by 70-80%. The bearing plate continues to move backwards until the second buckling part abuts against the edge of the limiting groove on the B plate, the B plate is driven to move backwards, and meanwhile, the ejection block ejects the automobile exterior trimming part with the honeycomb structure, so that the rear mold core is separated from the automobile exterior trimming part with the honeycomb structure. According to the injection mold, the mold and the automobile exterior trimming part with the honeycomb structure are separated step by arranging the insert and the plate B connected with the driving spring, so that the coating force on the mold is reduced, and the problem of difficult ejection of the automobile exterior trimming part with the honeycomb structure is solved.

The ejector blocks 262 are distributed at the edges of the mold cavity. The evenly distributed ejection blocks are larger in stress area than the ejector pins, so that the stress of the product is even in the ejection process, and the product is prevented from being whitened.

And a water conveying pipeline 232 is arranged in the insert 23. The insert has enough positions to arrange water conveying pipelines, and the cooling is enough and uniform.

The injection mold further comprises a limit buckle 29, as shown in fig. 4, which comprises a swing arm 291, a bump 292, and a stroke control rod 293; one end of the swing arm 291 is hinged to the a plate 21, and the other end of the swing arm 291 has a hook 2911 and a protrusion 2912; the projection 292 is disposed on the B plate 22; one end of the stroke control rod 293 is connected with the bearing plate 24, and the other end of the stroke control rod is provided with a push block 2931; as shown in fig. 5, when the carrier plate is in the first stroke, the protrusion 292 is engaged with the hook 2911 of the swing arm 291, and the a plate 21 and the B plate 22 are attached; as shown in fig. 6, when the carrier plate 24 is in the second stroke, the push block 2931 of the stroke control lever 293 abuts against the protrusion 2912 of the swing arm 291, the hook 2911 is separated from the protrusion 292, and the a plate 21 is separated from the B plate 22. In order to further enable the plate A and the plate B to be tightly abutted, a limit buckle machine is additionally arranged, and the separation of the insert and the automobile exterior trimming part with the honeycomb structure is fully ensured.

As shown in fig. 4, the swing arm 291 is provided with a counter bore 2913, and a connecting bolt 2914 and a compression spring 2915 are provided in the counter bore; both ends of the compression spring 2915 respectively abut against the head of the connection bolt 2914 and the step of the counter bore 2913. The counter bore 2913 prevents protrusion of the connection bolt 2914, and ensures flatness of the mounting surface. The compression spring 2915 acts as a restoring force to the swing arm 291 by an elastic force.

As shown in fig. 4, the counter bore 2913 has a first through-hole 29131 and a second through-hole 29132, wherein a head of the connection bolt 2914 is disposed in the first through-hole 29131; the second via 29132 is a strip-shaped hole. The second through hole 29132 is provided as a strip-shaped hole to provide a moving space for the connection bolt 2914 when the swing arm 291 swings.

Specifically, the first stroke is: after the product 1 is molded, the bottom plate 25 drives the bearing plate 24 and the insert 23 to move backwards; due to the elastic force of the driving spring 27 and the limiting action of the limiting button 29, the B plate 22 and the a plate 21 are tightly propped against and temporarily not separated and are kept still, so that the honeycomb forming part 231 on the insert 23 is separated from the bone 11 on the automobile exterior part 1;

the second stroke is as follows: the bottom plate 25 continues to move backward, the second buckling part 282 of the stroke limiting block 28 is abutted against the limiting groove 222 on the B plate 22, the B plate 22 is driven to move backward, the limiting button 29 releases the limiting, and the B plate 22 is separated from the a plate 21. When the B plate 22 moves backward, the ejector block 262 is not moved, and the product ejection is completed, thereby separating the rear mold core 221 from the honeycomb structured automobile exterior trim 1.

In the description of the present invention, it is to be understood that the terms "vertical", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be considered as limiting the scope of the present invention.

If the terms "first," "second," etc. are used herein to define parts, those skilled in the art will recognize that: the use of "first" and "second" is merely for convenience in describing the utility model and to simplify the description, and the words are not intended to have a special meaning unless otherwise stated.

The present invention is not limited to the embodiments, and various modifications and variations of the present invention are intended to be included within the scope of the claims and the equivalent technical scope of the present invention if they do not depart from the spirit and scope of the present invention.

Claims (6)

1. The utility model provides an injection mold for taking honeycomb structure car exterior trimming spare which characterized in that includes:

the plate A is provided with a front mold core;

the plate B is provided with a rear mold core, and a molding cavity is formed between the front mold core and the rear mold core;

the insert penetrates through the rear mold core; the insert is provided with a honeycomb forming part, and the honeycomb forming part is used for forming a part of honeycomb structures on the automobile exterior trimming parts;

a carrier plate connected to the insert;

the bottom plate is connected with the bearing plate and is used for driving the bearing plate to move;

the ejector pin plate is provided with ejector pins, and the ejector pins are connected with ejector blocks;

two ends of the driving spring are respectively connected with the plate B and the ejector plate;

and the two ends of the stroke limiting block are provided with a first buckling part and a second buckling part, the first buckling part is fixedly connected with the bearing plate, and the second buckling part is in sliding fit with the limiting groove on the B plate.

2. An injection mold according to claim 1,

the ejection blocks are distributed at the edge of the forming cavity.

3. An injection mold according to claim 1,

and a water conveying pipeline is arranged in the insert.

4. An injection mold according to claim 1,

the injection mold also comprises a limit button machine which comprises a swing arm, a convex block and a stroke control rod;

one end of the swing arm is hinged with the plate A, and the other end of the swing arm is provided with a hook part and a protruding part;

the lug is arranged on the B plate;

one end of the stroke control rod is connected with the bearing plate, and the other end of the stroke control rod is provided with a push block;

when the bearing plate is in a first stroke, the lug is buckled with the hook part of the swing arm, and the plate A is attached to the plate B;

when the bearing plate is in the second stroke, the push block of the stroke control rod is abutted to the boss of the swing arm, the hook part is separated from the bump, and the plate A is separated from the plate B.

5. An injection mold according to claim 4,

a countersunk hole is formed in the swing arm, and a connecting bolt and a compression spring are arranged in the countersunk hole;

and two ends of the compression spring are respectively abutted against the head of the connecting bolt and the step of the counter bore.

6. An injection mold according to claim 5,

the counter bore has a first through hole and a second through hole, wherein a head of the connecting bolt is disposed in the first through hole; the second through hole is a strip-shaped hole.

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