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Mold lapping-in paper and mold lapping-in method

A mold and pulp technology, which is applied in special paper, synthetic cellulose/non-cellulose material pulp/paper, paper, etc., can solve the problems of high operator operation level and high research and development costs, so as to reduce research and development costs , to reduce the effect of using

Active Publication Date: 2020-04-28
BAIC MOTOR CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of this disclosure is to solve the problem that the use of metal stamping parts in the existing mold research and integration method leads to high research and synthesis costs, and the application of red lead powder or blue lead powder requires a high level of operator operation, and provides a mold research and development method. Combined paper and mold grinding method

Method used

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  • Mold lapping-in paper and mold lapping-in method

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preparation example Construction

[0032] The preparation method of the mold grinding paper of the present disclosure may be a conventional method in the art, and will not be repeated here.

[0033] The second aspect of the present disclosure provides a method for mold grinding using the mold grinding paper described in any one of the first aspect, the method includes the following steps: (1) placing the mold grinding paper under the mold (2) after mold closing, take off the mold lapping paper, and lap the high point of the mold gap.

[0034] The above-mentioned mold grinding method provided by the present disclosure uses paper for mold grinding instead of metal stamping parts, reduces the use of metal stamping parts, and reduces grinding costs; moreover, there is no need to paint red lead on the surface of the mold grinding paper during the grinding process Powder or blue lead powder, to avoid uneven application of red lead powder or blue lead powder and affect the effect of mold grinding.

[0035] Preferably...

Embodiment 1

[0039] According to the needs of mold grinding, cut the paper for mold grinding into rectangles, squares, and trapezoids of any size within the range of 4m, and then lay it flat on the lower mold of the mold, so that the upper mold and the lower mold of the mold can be closed. After the end, remove the mold grinding paper, and grind the high point of the mold gap.

[0040] In the present embodiment, the toughening fiber (polyester fiber) of 40% by weight is contained in the paper for mold lapping, the paper pulp (wood pulp) of 40% by weight, the tackifier (by polypropylene, vegetable oil) of 18% by weight , polyvinyl acetate and wax are mixed according to the weight ratio of 5:5:3:5) and 2% by weight of pigment (red lead powder).

Embodiment 2

[0042]Utilize the method for embodiment 1 to carry out mold grinding, the difference is: in the present embodiment, the toughening fiber of 35% by weight is contained in the mold grinding and combining paper, the paper pulp of 40% by weight, the viscosifying of 20% by weight agent and 5% by weight of the pigment.

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Abstract

The invention relates to mold lapping-in paper. The mold lapping-in paper is characterized in that the mold lapping-in paper comprises toughening fibers, paper pulp, a tackifier and a pigment, whereinon the basis of the weight of the mold lapping-in paper, the weight percentage of the toughening fiberS is 20-40%, the weight percentage of the paper pulp is 20-40%, the weight percentage of the tackifier is 10-20%, and the weight percentage of the pigment is 1-10%. The die lapping-in paper can replace a metal stamping part, the use of the metal stamping part is reduced, and the lapping-in cost is reduced; moreover, when the mold lapping-in paper is used, red lead powder or blue lead powder does not need to be brushed, and the situation that the mold lapping-in effect is affected due to the fact that the red lead powder or the blue lead powder is not brushed evenly is avoided.

Description

technical field [0001] The disclosure relates to the technical field of mold production, in particular to a paper for mold grinding and combining and a mold grinding and combining method. Background technique [0002] Automobile cover parts refer to thin steel parts covering the engine, chassis, cab and body. This kind of parts generally meet the design requirements by allowing the thin steel plates to deform plastically under the action of high pressure and molds. shape, size. The production of an automobile panel is generally realized by molds with 3-6 processes. Among all the molds, the drawing die is the most critical process for the forming of the cover. The grinding quality of the drawing die is directly related to the final part. pass rate and surface quality. [0003] In the existing drawing die grinding and combining method, metal stamping parts are used for drawing die grinding and combining. Between the upper and lower molds, apply pressure to the mold to make ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H27/00D21H13/24D21H21/28D21H21/06D21H17/35D21H17/53D21H17/60D21H17/48D21H17/21D21H17/00B24B19/20B24D11/02
CPCD21H27/00D21H13/24D21H21/28D21H21/06D21H17/35D21H17/53D21H17/60D21H17/48D21H17/21D21H17/00B24B19/20B24D11/02
Inventor 林春雷
Owner BAIC MOTOR CORP LTD
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