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Method for improving tumbling cylinder radial total run-out accuracy of tumbling cylinder film-laying machine

A roller film laying and full beating technology is applied in the direction of making medicines into devices in special physical or taking forms, which can solve the problems of improving the accuracy of roller radial full beating.

Active Publication Date: 2012-01-18
药大制药有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the thickness tolerance of the coating is controlled by um, so it is difficult to improve the radial runout accuracy of the roller to the um level only by mechanical processing and assembly.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] The method of improving the radial full runout accuracy of the roller (diameter 1m) on the roller laminating machine in pharmaceutical production, the steps are as follows:

[0018] a. Mix the epoxy resin and the room temperature curing agent to make the primer, so that the primer remains liquid in the temperature range of 60-70 degrees through the water bath;

[0019] b. Install a scraper plate parallel to the axial direction of the roller on the bracket with the roller, so that a small gap of 70um is formed between the knife edge of the scraper plate and the outer peripheral surface of the roller;

[0020] c. Pass the liquid primer into the tiny gap from one side of the scraper plate;

[0021] d. Turn the drum so that the primer is coated on the outer peripheral surface of the drum through a small gap;

[0022] e. Stop the liquid primer from entering the tiny gap;

[0023] f. Wait for 2-3 hours to allow the primer coated on the outer peripheral surface of the drum t...

Embodiment 2-3

[0025] The difference between Embodiments 2 and 3 and Embodiment 1 is that the tiny gaps are 50um and 30um respectively.

Embodiment 4

[0027] The difference from Example 1 is: after step f, repeat steps b-f three times; the tiny gaps in each step b-f are 55um, 42um, 30um respectively.

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PUM

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Abstract

The invention relates to a method which is used for improving the total run-out precision along the radial direction of a roller on a roller type film dispenser to reach the level of um, and ensuring the thickness tolerance of an emulsion membrane to be in accordance with specified standard; the method comprises the following steps: epoxide resin and a room temperature curing agent are mixed together to be made into liquid clearcole; a plate scraper is installed, and a tiny gap is formed between the cut of the plate scraper and the peripheral surface of the roller; the liquid clearcole passesthrough the tiny gap; the roller is rotated to lead the clearcole to be coated on the peripheral surface of the roller through the tiny gap; the liquid clearcole is stopped passing through the tiny gap; after a moment, the clearcole coated on the peripheral surface of the roller is solidified.

Description

technical field [0001] The invention relates to a method for improving the radial full run-out accuracy of a roller on a roller film-laying machine in pharmaceutical production. Background technique [0002] The radial full runout of the roller on the roller film laying machine in pharmaceutical production has a significant impact on the tolerance of the thickness of the drug film. The thickness tolerance of the drug film determines whether the product meets the quality standard, that is, whether the film weight difference meets the standard. Therefore, improving the radial runout accuracy of the roller is the key to solving the tolerance of the film thickness. [0003] The diameter of the roller on the roller film laminating machine is relatively large (generally about 1m), coupled with the existing level of machinery manufacturing in our country, only relying on machining, assembly and other processes can often only control the radial runout of the roller at mm level. Ho...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61J3/04
Inventor 李成华陈培根
Owner 药大制药有限公司
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