Rubber cutting machine roller knife tooth form structure and design method thereof

A design method, the technology of the roller knife, applied in the field of rubber processing, can solve the problems of not being able to drop materials, not being able to cut, rubber blocks falling off, etc., to ensure normal work, solve the problem of sticking knives, and have a good application prospect

Pending Publication Date: 2020-09-08
新余钢铁股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In practice, it is found that there are many problems, the main problem is the phenomenon of "sticking knife"
That is, during the cutting process, the cut rubber sheet is still stuck in the toothed groove of the roller knife, and cannot be blanked, resulting in the inability to proceed to the next step of cutting
[0003] The tooth shape of the roller cutter in the prior art is generally composed of a straight line segment and an arc segment. If a reasonable tooth shape cannot be formed, there will be no suitable cutting force, and in severe cases, it will cause "sticking knife"
There are two cases of sticky knife, one is that the rubber block cannot be cut off, and the rubber block is stuck between the drum rotor and the stator; the other is that although the rubber block can be cut off, it cannot be discharged, that is, it cannot be produced when the drum rotor rotates. Under the action of centrifugal force and gravity, the cut rubber block is separated from the toothed groove of the roller knife
This kind of knife sticking phenomenon sometimes occurs on the drum glue cutting machine, and once it happens, the glue cutting machine will not work

Method used

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  • Rubber cutting machine roller knife tooth form structure and design method thereof
  • Rubber cutting machine roller knife tooth form structure and design method thereof
  • Rubber cutting machine roller knife tooth form structure and design method thereof

Examples

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Effect test

Embodiment 1

[0054] The embodiment of the four tooth shapes in the cross section of the roller knife of the present invention is shown in image 3 , the median diameter is 100mm;

[0055] The diameter of the addendum circle is 1.3 times the middle diameter, and the value is 130mm;

[0056] The diameter of the root circle is 0.7 times the pitch diameter, and the value is 70mm;

[0057] The arc length of the arc segment AG is 1.2mm.

Embodiment 2

[0059]The embodiment of the three tooth shapes in the cross section of the roller knife of the present invention is shown in Figure 4 , the median diameter is 50mm;

[0060] The diameter of the addendum circle is 1.2 times the middle diameter, and the value is 60mm;

[0061] The diameter of the root circle is 0.8 times the pitch diameter, and the value is 40mm;

[0062] The arc length of the arc segment AG is 0.5mm.

[0063] It has been proved by experiments that the tooth shape of the roller knife designed by the present invention is applied to the roller rubber cutting machine, and no knife sticking phenomenon is found.

[0064] The mechanism of the tooth profile curve ABCDEFG as the tooth profile of the roller cutter is that this curve can form not only the cutting edge, but also a continuous material receiving area with no dead angle transition, and it can also take into account the sufficient cutting strength of the tooth. For the rake face, since the specific long-wi...

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Abstract

The invention discloses a rubber cutting machine roller knife tooth form structure and a design method thereof. The rubber cutting machine roller knife tooth form structure is characterized by comprising a front knife surface and a rear knife surface; and blade sections are arranged on the end portions of the front knife surface and the rear knife surface, the front knife surface is a prolate epicycloid, and the rear knife surface is an involute. The rubber cutting machine roller knife tooth form structure and the design method thereof are simple in structure and reasonable in arrangement, theproblem of knife sticking during work of a roller rubber cutting machine can be effectively solved, normal work of the rubber cutting machine is guaranteed, and good application prospects are achieved.

Description

technical field [0001] The invention belongs to the technical field of rubber processing, and more specifically relates to a cutter-tooth structure and a design method of a rubber cutting machine drum. Background technique [0002] Rubber cutting machine is widely used in production enterprises that use rubber as raw material, such as: tire factory, modified asphalt factory, waterproof material factory, self-adhesive glue factory, masking glue factory and rubber research unit, etc. It is used to pre-slice large rubber blocks for subsequent crushing or processing or weighing. It is a previous step in the production of rubber processing. The cutting efficiency of this step will affect the production efficiency of the whole production process. Existing rubber cutting machines are divided into two types, one is the guillotine type, that is, the cutting knife reciprocates up and down, cuts downwards, resets upwards, and then the rubber block moves to a position toward the blade...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): B26D1/36B26D7/00
CPCB26D1/36B26D1/0006B26D7/00
Inventor袁道幸钟金根袁涛刘志芳刘魁华伍小春伏小燕刘章程杨武兵刘小英周娟刘娟孙晓宇吴金金赵子龙刘婧
Owner新余钢铁股份有限公司