JPH0356263A - Binding of friction material - Google Patents

Abstract

PURPOSE:To prevent the distortion of facings by binding stacked friction materials with a hard plate identical in shape thereto and having a flat and smooth contact surface therewith placed into close contact therewith on one or both sides of th stacked friction materials. CONSTITUTION:Stacked facings 1 are bound tightly with bands 3 with hard plates 2 identical in shape to the facing and having a flat and smooth contact surface therewith placed into close contact therewith to exert the tightening force unevenly on the entire surface of each facing in order to prevent the occurrence of the distortion due to the unbalanced tightening force. Since the facings are orderly arranged by the flat and smooth surface of the hard plates 2 upon binding, the occurrence of the distortion caused by the inner stress of the facing itself resulting from changes in humidity and temperature can be controlled.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a method of laminating a large number of thin plate-like facings such as tardage facings and binding them with strings, etc., and in particular, a method for preventing warpage, distortion, etc. of the facings. It is something to do.

[Prior art and problems to be solved by the invention] Conventionally, for example, when friction materials such as clutch facings are manufactured and transported to the next assembly process, a large number of these materials (usually about 50 sheets) are stacked and stacked at regular intervals. They were tied together with string or ties.

However, with bands and strings, the force that tightens the stacked facings as a whole is not constant, so when that force is too strong, a wavy-like distortion occurs in each facing. In addition, when the facings are left bound in this manner, differences in internal stress occur depending on the location of the facings due to the passage of time and the effects of temperature and humidity, which also causes distortion.

[-f step to solve the problem]

In view of this, as a result of various studies, the present invention provides a bundling method that prevents facings from being distorted over time during transportation or stagnation of facings that are stacked and bound with strings or the like.

That is, the present invention provides a method for laminating and binding friction materials, in which a flat hard plate having the same planar shape as the facing and in contact with the facing is brought into close contact with one or both sides of the laminated facing. It is characterized by unity.

[Effect]

In this way, by bringing together a hard plate with the same planar shape as the facing and a flat contact surface with the facing,
When it is strongly viscous with bang 1, etc., the tightening force is applied uniformly to each facing, so it has the advantage of preventing the occurrence of bunching due to an imbalance in the tightening ζJ force. .

Furthermore, each facing is modeled after this hard board Hirakawa when binding, so it is wet! Facing due to changes in Ii [Distortion caused by internal stress in one body can be suppressed.

For example, in the case of disk-shaped facings, it is effective to stack and bundle facings with large diameters by bringing the hard plates close to both sides of the laminated facings, but when facings with relatively small diameters Then, even if it is brought into close contact with only one side of the laminated phenong, it will take 11 minutes.

Further, the hard plate 17 may be made of any material as long as it maintains flatness, for example, plywood, plastic plate, iron plate, etc. can be used.

Furthermore, the technology of the present invention is applicable not only to friction materials, but also to organic materials, inorganic materials, metal materials, etc. It can also be applied to objects.

〔Example〕

The present invention will be explained by way of an example.

] As shown in Fig.
Approximately 50 sheets of facings 1) are stacked in the longitudinal direction, and this stacked facing is placed in a distortion prevention board (2) made of plywood with the same shape and thickness as these facings (after sandwiching from L-F with 2+, tie hanger F ' (3+ ties the whole together [7].

I left a bundled item like this for a long time,
No warpage or distortion occurred in each of the Kranotif L-Things.

〔Effect of the invention〕

As described above, the present invention eliminates the distortion and warping of the wires that conventionally occur when stacking a large number of sheets and bundling them with ropes or strings for transportation or preservation. This has remarkable effects such as improving the quality of face sync.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention. I Clutch facing 2 Distortion prevention plate 3- Binding Han 1・ 5

Claims (1)

[Claims] (1) In a method of laminating friction materials and binding them together,
A method for bundling friction materials, characterized in that a hard plate having the same planar shape as the friction material and a flat contact surface with the friction material is tightly bound to one or both sides of the laminated friction material.