CN209888801U

CN209888801U - Prevent installing support of outward appearance stress shrinkage trace

Info

Publication number: CN209888801U
Application number: CN201920679325.5U
Authority: CN
Inventors: 何建军; 连丹丹; 周建军; 高源�
Original assignee: Chongqing Pingwei Auto Parts Co Ltd
Current assignee: Chongqing Pingwei Auto Parts Co Ltd
Priority date: 2019-05-13
Filing date: 2019-05-13
Publication date: 2020-01-03
Anticipated expiration: 2029-05-13

Abstract

The utility model discloses a prevent installing support of apparent stress shrinkage trace, including the support riser of two relative settings, two support risers are connected with the end plate between the riser, and the roof is installed jointly at the top of two support risers and end plate, is equipped with boss post and setting element on the roof, is equipped with first drawing of patterns direction muscle on the inner wall of two support risers respectively, and first drawing of patterns direction muscle is parallel with the roof, utilizes the utility model discloses structure at product surface mounting needs installation, simple structure can satisfy product lightweight reduce cost, can also effectively prevent product surface shrinkage, the stress trace appears, makes it satisfy the appearance quality requirement, and does not have special requirement to mould frock, injection moulding equipment etc..

Description

Prevent installing support of outward appearance stress shrinkage trace

Technical Field

The utility model relates to an automobile parts technical field, concretely relates to prevent installing support of outward appearance stress shrinkage trace.

Background

The competitive pressure of current automobile research and development is very big, and each big car enterprise charges the bitter worker in order to improve competitiveness in various science and technology sense, functionality, security, cost etc.. In order to save cost, the wall thickness of a bumper main body is gradually reduced from 3.5mm to 2.6mm in the early stage, but the quality problem of poor appearance is also brought, because a bumper body is a spraying process, a back mounting structure can cause shrinkage of the surface of the bumper and the occurrence of stress marks, and the current scheme for solving the problem mainly comprises two schemes, one scheme is as follows: there is structural region main part wall thickness local area thickening to 3.0mm at the back, its two: the back structure is detached separately by welding to the body, the corresponding drawbacks of these two solutions are as follows:

firstly, a scheme for thickening the wall thickness of a main body in a back structure region is as follows: 1. due to the local thickening, the transition region is demanding: the length is more than 1:50, and some areas cannot be subjected to such a large proportion due to appearance limitation; 2. the back has more structures, and the locally thickened area is larger, so that the weight of the whole product is not obviously reduced; 3. the proposal can not completely avoid the risk of shrinkage and is closely related to actual production parameters and processes.

Secondly, a welding scheme for independently disassembling the back part structure is as follows: 1. the back has more structures, about 10 more parts are added, and the mould and the production cost are increased; 2. a welding tool needs to be added in the welding process; 3. the surface will have a weld mark after welding.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a support mounting structure of outward appearance stress shrinkage trace, this structure both made things convenient for installation central authorities' support, can prevent effectively again that the outward appearance face of product from shrinking or the stress trace appears.

The technical scheme is as follows: the mounting support comprises two supporting vertical plates which are arranged oppositely, an end plate is connected between the two supporting vertical plates, a top plate is mounted at the tops of the two supporting vertical plates and the top plate, the supporting vertical plates, the end plate and the top plate jointly enclose a cover-shaped structure with an open side, a boss column and a positioning piece are arranged on the top plate, first demolding guide ribs are arranged on the inner walls of the two supporting vertical plates respectively, and the first demolding guide ribs are parallel to the top plate. Adopt above-mentioned technical scheme, but overall structure integrated into one piece is on the product that needs mounting structure, again pass through the setting element location with the structure that needs the installation after again and install on the boss post, moreover, the steam generator is simple in structure, need not to change the thickness of product, the installation is simple, can satisfy the requirement of product lightweight reduce cost completely, can also prevent effectively that the product surface from shrinking, and the inside drawing of patterns direction muscle of overall structure adopts the mode that is on a parallel with roof (or product surface) to arrange, when product shaping stripping like this, remain stable state throughout when the mould is demoulded, the mould can not contradict on roof or product and lead to product or roof surface stress mark to appear.

Preferably, the method comprises the following steps:

the thicknesses of the two supporting vertical plates and the lower part of the end plate are gradually reduced from top to bottom to form a wedge-shaped glue reducing part. The structure adopts a chamfer form to reduce glue, on one hand, the appearance surface of the product can be effectively ensured not to shrink, and on the other hand, the flowability of plastic injection molding can be increased.

And a second demolding guide rib is arranged on the inner wall of the end plate, the second demolding guide rib is parallel to the top plate, and two ends of the second demolding guide rib are respectively connected with the inner ends of the two first demolding guide ribs. Adopt this structure, can produce great separation immediately between mould and the end plate and immediately cause the damage to the end plate at the deciduate moment, and can not only guarantee that the deciduate is smooth and easy through second drawing of patterns direction muscle, also can ensure simultaneously that the deciduate moment end plate intensity is enough.

The outer sides of the two supporting vertical plates are respectively provided with a triangular first reinforcing plate, the first reinforcing plates are respectively close to the corresponding free edges of the supporting vertical plates, the top ends of the first reinforcing plates face upwards, the bottom edges of the first reinforcing plates face downwards, and the side edges of the first reinforcing plates are fixedly connected with the corresponding free edges of the supporting vertical plates. Adopt above-mentioned structure, because the lower part of lid column structure has and subtracts gluey portion, lead to its and the contact surface of product less, the easy defect such as stress concentration, easy tearing that appears can effectively promote the intensity at here through addding the reinforcing plate, prevent that above-mentioned condition from taking place, especially this first reinforcing plate is close to the exit of lid column structure, has stronger reinforcing effect in the twinkling of an eye that the mould is deviate from completely.

Two triangular second reinforcing plates are arranged on the outer sides of the end plates in parallel, the top ends of the second reinforcing plates face upwards, the bottom sides of the second reinforcing plates face downwards, and the side edges of the second reinforcing plates are fixedly connected with the end plates. By adopting the structure, the strength of the end plate can be effectively improved, and the defects of stress concentration, easy tearing and the like are prevented.

The positioning piece comprises a cross-shaped positioning seat which is fixedly arranged on the top plate, and the positioning seat is provided with a positioning column. By adopting the structure, the positioning column can accurately position the mounting position, and the cross-shaped positioning seat can also play a role in strengthening the positioning column.

The outer wall of the boss column is connected with a cross-shaped reinforcing rib, a cross arm of the reinforcing rib is connected with a cross arm of the positioning seat, and a longitudinal arm of the reinforcing rib is parallel to a longitudinal arm of the positioning seat. By adopting the structure, the strength of the boss column is favorably improved, and meanwhile, the reinforcing ribs of the boss column are connected with the reinforcing part of the positioning piece, so that the reinforcing ribs and the reinforcing part can generate a synergistic effect, and the strength of the boss column and the reinforcing part can be favorably improved.

Compared with the prior art, the beneficial effects of the utility model are that: after the structure is manufactured on the surface of a product, the structure to be installed is installed on the boss column, the installation is simple, the light weight and cost reduction of the product can be met, the surface of the product can be effectively prevented from shrinking and stress marks can be effectively prevented, the appearance quality requirement can be met, and no special requirements are required for a die tool, injection molding equipment and the like.

Drawings

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

fig. 2 is a schematic plan view of the present invention;

fig. 3 is a sectional view a-a of fig. 2.

Detailed Description

The present invention will be further described with reference to the following examples and accompanying drawings.

As shown in fig. 1-3, an installation support for preventing an external stress shrinkage mark comprises two supporting vertical plates 1 which are arranged oppositely, an end plate 2 is connected between the two supporting vertical plates 1, a top plate 3 is installed on the tops of the two supporting vertical plates 1 and the top plate 2, the supporting vertical plates 1, the end plate 2 and the top plate 3 jointly enclose a cover-shaped structure with an open side, a boss column 4 and a positioning piece 5 are arranged on the top plate 3, first demolding guide ribs 7 are respectively arranged on the inner walls of the two supporting vertical plates 1, and the first demolding guide ribs 7 are parallel to the top plate 3.

And a second demoulding guide rib 9 is arranged on the inner wall of the end plate 2, the second demoulding guide rib 9 is parallel to the top plate 3, and two ends of the second demoulding guide rib 9 are fixedly connected with the inner ends of the two first demoulding guide ribs 7 respectively.

The thickness of the lower parts of the two supporting vertical plates 1 and the end plate 2 is gradually reduced from top to bottom to form a wedge-shaped glue reducing part 8, a triangular first reinforcing plate 6 is arranged on each of the outer sides of the two supporting vertical plates 1, the first reinforcing plates 6 are close to the corresponding free edges of the supporting vertical plates 1, the top ends of the first reinforcing plates 6 face upwards, the bottom sides of the first reinforcing plates 6 face downwards, and the side edges of the first reinforcing plates 6 are fixedly connected with the corresponding free edges of the supporting vertical plates 1.

Two triangular second reinforcing plates 10 are arranged on the outer side of the end plate 2 in parallel, the top ends of the second reinforcing plates 10 face upwards, the bottom edges of the second reinforcing plates face downwards, and the side edges of the second reinforcing plates 10 are fixedly connected with the end plate 2.

The positioning piece 5 comprises a cross-shaped positioning seat 5b, the positioning seat 5b is fixedly installed on the top plate 3, the positioning seat 5b is provided with a positioning column 5a, the outer wall of the boss column 4 is connected with a cross-shaped reinforcing rib 11, a cross arm of the reinforcing rib 11 is fixedly connected with a cross arm of the positioning seat 5b, and a longitudinal arm of the reinforcing rib 11 is parallel to a longitudinal arm of the positioning seat 5 b.

During production, the whole support mounting structure is integrally formed on the surface (such as the back of a bumper) of a product 12, the surface of the product 12 below the cover-shaped structure is recessed downwards, the first demolding guide rib 7 and the second demolding guide rib 9 are parallel to the top plate 3 and are also parallel to the recessed part of the product 12, the bottom plates of the first reinforcing plate 6 and the second reinforcing plate 10 are respectively fixedly connected with the surface of the product 12, during demolding, the mold is supported by the first demolding guide rib 7 and the second demolding guide rib 9 and is released from the open end of the cover-shaped structure, and the product 12 or the top plate 3 cannot be touched all the time in the releasing process, so that stress marks cannot be formed on the surfaces of the product 12 and the top plate.

Finally, it should be noted that the above description is only a preferred embodiment of the present invention, and those skilled in the art can make various similar representations without departing from the spirit and the scope of the present invention.

Claims

1. The utility model provides a prevent installing support of outward appearance stress shrinkage trace which characterized in that: the supporting device comprises two supporting vertical plates (1) which are arranged oppositely, an end plate (2) is connected between the two supporting vertical plates (1), a top plate (3) is installed at the tops of the supporting vertical plates (1) and the end plate (2) jointly, the supporting vertical plates (1), the end plate (2) and the top plate (3) enclose a cover-shaped structure with an open side, a boss column (4) and a positioning piece (5) are arranged on the top plate (3), first demolding guide ribs (7) are arranged on the inner walls of the supporting vertical plates (1) respectively, and the first demolding guide ribs (7) are parallel to the top plate (3).

2. The mounting bracket for preventing the shrinkage mark of the appearance stress according to claim 1, wherein: the thicknesses of the two supporting vertical plates (1) and the lower parts of the end plates (2) are gradually reduced from top to bottom to form wedge-shaped glue reducing parts (8).

3. The mounting bracket for preventing the shrinkage mark of the appearance stress according to claim 1 or 2, wherein: and a second demolding guide rib (9) is arranged on the inner wall of the end plate (2), the second demolding guide rib (9) is parallel to the top plate (3), and two ends of the second demolding guide rib (9) are respectively connected with the inner ends of the two first demolding guide ribs (7).

4. The mounting bracket for preventing the shrinkage mark of the appearance stress according to claim 3, wherein: the outer sides of the two supporting vertical plates (1) are respectively provided with a triangular first reinforcing plate (6), the first reinforcing plates (6) are respectively close to the corresponding free edges of the supporting vertical plates (1), the top ends of the first reinforcing plates (6) face upwards, the bottom edges of the first reinforcing plates face downwards, and the side edges of the first reinforcing plates (6) are fixedly connected with the corresponding free edges of the supporting vertical plates (1).

5. The mounting bracket for preventing the shrinkage mark of the appearance stress according to claim 4, wherein: two triangular second reinforcing plates (10) are arranged on the outer side of the end plate (2) in parallel, the top ends of the second reinforcing plates (10) face upwards, the bottom edges of the second reinforcing plates face downwards, and the side edges of the second reinforcing plates (10) are fixedly connected with the end plate (2).

6. The mounting bracket for preventing the shrinkage mark of the appearance stress according to claim 1, wherein: the positioning piece (5) comprises a cross-shaped positioning seat (5b), the positioning seat (5b) is fixedly installed on the top plate (3), and the positioning column (5a) is installed on the positioning seat (5 b).

7. The mounting bracket for preventing the shrinkage mark of the appearance stress according to claim 6, wherein: the outer wall of the boss column (4) is connected with a cross-shaped reinforcing rib (11), a cross arm of the reinforcing rib (11) is connected with a cross arm of the positioning seat (5b), and a longitudinal arm of the reinforcing rib (11) is parallel to a longitudinal arm of the positioning seat (5 b).