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Parison thickness calculation method based on grating projection and parison thickness calculation system thereof

A technology of grating projection and calculation method, which is applied in the direction of using optical devices, measuring devices, instruments, etc., can solve the problems of reduced production efficiency, long debugging cycle, and low accuracy of thickness planning curves, and achieve the effect of improving production efficiency

Inactive Publication Date: 2017-02-22
NINGBO TECHMATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] It can be seen that in the whole process, the debugging cycle of this method is longer, the production efficiency of the whole product is greatly reduced, and the accuracy of the thickness planning curve is low.

Method used

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  • Parison thickness calculation method based on grating projection and parison thickness calculation system thereof
  • Parison thickness calculation method based on grating projection and parison thickness calculation system thereof
  • Parison thickness calculation method based on grating projection and parison thickness calculation system thereof

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Experimental program
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Effect test

Embodiment 1

[0056] figure 2 It is a flow chart of a method for calculating parison thickness based on grating projection provided by the present invention. A method for calculating parison thickness based on grating projection, used in the technical field of hollow blow molding, comprising the following steps:

[0057] S10: Projecting grating stripes onto the product under test;

[0058] In a specific implementation, the grating stripes are first projected onto the product under test at an appropriate angle, wherein the projecting the grating stripes onto the product under test includes projecting the grating stripes onto the outer surface of the product under test and The inner surface.

[0059] S11: Collect the grating fringe image on the product under test, and convert the grating fringe image into a corresponding electrical signal.

[0060] When the grating stripes are projected onto the tested product, grating stripe images are generated on the outer and inner surfaces of the tes...

Embodiment 2

[0112] Figure 8 A structural diagram of a parison thickness calculation system based on grating projection provided by the present invention. Measuring systems based on raster projection for hollow blow molding technology, including:

[0113] The image projection device 10 projects the grating stripes onto the tested product 11;

[0114] An image acquisition device 12, configured to acquire the grating fringe image on the tested product 11, and convert the grating fringe image into a corresponding electrical signal;

[0115] A wall thickness controller 13, configured to convert the electrical signal corresponding to the grating stripe image into a digital signal, and generate a parison wall thickness planning curve;

[0116] Wherein, the projecting the grating stripes onto the tested product 11 includes projecting the grating stripes onto the outer surface and the inner surface of the tested product.

[0117] In a specific implementation, the image projection device 10 fir...

Embodiment approach

[0119] As a preferred implementation, the wall thickness controller includes:

[0120] an image receiving device, configured to receive the electrical signal corresponding to the grating fringe image;

[0121] A data calculation device, used to convert the electrical signal into a digital signal and perform calculation to obtain the thickness value of each point of the product under test;

[0122] A data processing device, configured to perform data processing on the thickness value to obtain the parison wall thickness planning curve;

[0123] a storage device for storing the thickness value and the parison wall thickness planning curve;

[0124] The display device is used for displaying the parison wall thickness planning curve.

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PUM

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Abstract

The invention discloses a parison thickness calculation method based on grating projection, and is used for the technical field of hollow blow moulding. Grating fringes are projected to a tested product, wherein the process of projecting the grating fringes to the tested product includes that the grating fringes are projected to the external surface and the internal surface of the tested product, then the grating fringe images on the tested product are acquired and the grating fringe images are converted into corresponding electric signals, and finally the corresponding electric signals of the grating fringe images are converted into digital signals and a parison wall thickness planning curve is generated. According to the method, automatic acquisition of the product thickness can be directly realized through the grating projection technology, the parison wall thickness planning curve can be accurately and rapidly formed and the production efficiency of the product can be enhanced. Besides, the invention also discloses a parison thickness calculation system based on grating projection, wherein the system is corresponding to the method.

Description

technical field [0001] The invention relates to the technical field of hollow blow molding, in particular to a method and system for calculating parison thickness based on grating projection. Background technique [0002] Plastic products can be seen everywhere in our daily life, and there are many ways to produce them, but among the many plastic container molding methods, hollow blow molding and injection molding are the two most widely used molding methods with the largest output. In hollow blow molding products, the thickness of the wall is one of the important factors of the whole product process. Since the early hollow blow molding equipment lacked a parison wall thickness control system, in order to make the thinnest part of the product meet the minimum wall thickness requirement, other parts of the product must be thickened accordingly, resulting in waste of materials. Therefore, in order to save costs, control The parison wall thickness is a more economical approach...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/06
Inventor 周玲燕
Owner NINGBO TECHMATION