JPS60216873A - Rubber screen - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION FIELD OF INDUSTRIAL APPLICATION The present invention relates to a rubber general used for processing powder, granules, and lumps.

Conventional technology In the past, wire mesh, iron grids, etc. were commonly used to separate hard materials such as iron ore and coke.
Metal wholesalers suffer from severe wear when processing hard materials, resulting in poor durability and noise. As a countermeasure, the 9th
The silence shown in Figures 1 to 11 has been proposed. The lot shown in FIG. 9 is made of ceramics, the decoration 02 shown in FIG. 10 is made by pasting ceramic 04 on the top surface of an iron grid 03, and the lot 05 shown in FIG. 11 is a rubber grid 0.
Ceramic O7 is pasted on the top surface of 6.

According to such Qot, 02.05, the wear resistance is improved and the noise problem is solved, but at 01 tsubo, there are problems of high production cost and large weight.
In 05, the adhering cell ε was caused by the impact when the object was put in
There are disadvantages in that the ceramic layer easily cracks and the ceramic layer peels off from the bonded area at an early stage, and the manufacturing cost is high.

In addition, in the wholesaler 05, secondary vibrations peculiar to the rubber elastic body are applied to the rubber lattice body 06 to prevent the processed material from getting stuck in the through holes 08 and causing clogging. However, since the ceramic O7 is attached to the top surface of the rubber grid body 06, this vibration is difficult to occur.
There is a risk that the function of the saw may be impaired due to clogging.8 Purpose of the Invention The present invention was created against this technical background, and its purpose is to: Highly elastic and durable,
Another advantage is that it provides a rubber cage that is inexpensive to manufacture.

Means for Solving the Problems According to the present invention, a rubber cross body defining a plurality of through holes in a rubber sand for treating powdery, granular or agglomerated materials is provided. The feature is that the granular wear-resistant material is dispersed and buried, and the granular wear-resistant material suppresses the wear of the rubber crosspiece, and the dispersed granular wear-resistant material does not restrain the vibration of the rubber crosspiece, so it is easy to see. Less likely to get clogged.

Example The present invention will be explained below with reference to Examples.

Fig. 2 shows a part of the rubber spool 1, and when attaching the sieve 1 to a weighing machine, the bent portion 2 is formed at both ends in the direction of the arrow (only one side is shown). . The main body portion of the field 1 is formed of a large number of vertical bars 3 and horizontal bars 4, and one square through hole 5 is formed by both bars 3.4. When installed in the machine, forced vibration is applied to the shaft 1, and the materials to be treated, such as iron ore and coke, flow in the direction along the vertical bar 3, that is, in the direction of arrow B.

In addition, Wl is obtained by integrally vulcanizing the soft rubber upper layer 6 and the hard rubber lower layer 7, and granular ceramics 8 are dispersed and embedded along the surface of the upper layer 6. A reinforcing steel wire 9 is provided in the lower layer 7 of the horizontal crosspiece 4.
(Twisted fiber wire or canvas are also possible) is buried (Fig. 1,
See Figure 3. However, FIG. 1 is an enlarged plan view of Wl, and FIG. 3 is a cross-sectional view thereof taken along the line ■-III).

The granular ceramics 8 are buried in order to impart wear resistance to Wl - for example, alumina (Al
Ceramics containing 90% or more of toa) and having excellent wear resistance are used. In addition, the particle size of the granular ceramics 8 is
The size of the through-hole 5, the width and thickness of the vertical bars 3 and horizontal bars 4, and other product configurations, as well as the type and shape of the object to be processed,
Select the appropriate size according to the dimensions, and then use the scale 1.
It is possible to further improve the wear resistance of Incidentally, if the particle size of the granular ceramic 80 is too small, the rubber layer cannot be sufficiently protected, so at least a particle size of 2 is required.

Therefore, in order to disperse and bury the granular ceramics 8 in the upper layer 6, as shown in FIG.
After scattering granular ceramics 8 into the grooves 12, an upper layer of soft rubber (this rubber is mixed with ceramics) is used. (This takes into consideration the adhesion and abrasion resistance of
After pressing the rubber plate with the upper die and pushing the rubber plate into the groove 12, the upper die is removed, and the reinforcing steel wire 9 is placed on the upper layer soft rubber, and then The lower layer hard rubber is placed and pressurized with an upper mold to perform heating and vulcanization molding.

Next, the results of an actual durability test using ql with the above structure will be shown.

In this test, granular ceramics 8 (
piC containing 90% alumina) dispersed and buried
width 580 mm, length 600 mm, - thickness 20 urn)
was attached to a vibrator, and a pseudo-top (with a diameter of 5 to 30 tnm) was brought into free contact for 100 hours. Figure 5 shows
The test results are shown, and the horizontal axis shows the ceramic occupancy rate (rr
Place t on a plane and project the vertical and horizontal beams onto that plane 3.4
The vertical axis represents the ratio when the amount of wear (measured by the thickness after the test) of the pure rubber material is set to 1.

As is clear from Figure 5, the occupancy rate of ceramics is 30%.
%, the amount of wear is about 4% compared to pure rubber.
decreases to

As a result of the above test, granular ceramics 8 were dispersed on the cape 1.
It has been found that by embedding the material and shaking it, its wear resistance can be significantly improved. In this way, the frequency of replacement is greatly reduced according to the 1/2, and when the labor required for replacement is also taken into account, the cost saving effect is extremely large.

Unlike 1902.05, cracking and peeling do not occur, and the wear-resistant effect of ceramics can be maintained for a long time.

Other features of this embodiment are listed below.

■Since the granular ceramics 8 do not constrain the base rubber layer, they do not stiffen the rubber layer and do not suppress the secondary vibrations characteristic of rubber materials, and the vibration effect makes the workpiece smooth. The number passes through the through hole 5, the function of which is promoted, and clogging is less likely to occur.

■Similar to the previous item, the monolithic ceramic 8 does not constrain the base rubber layer, so it absorbs the impact of the processed material that is thrown into it.
The f-technique provides good buffering and absorption, and no noise is generated. Note that since the upper layer 6 made of soft rubber is moderately reinforced with the lower layer 7 made of hard rubber containing -m wires 9, it can sufficiently withstand the above-mentioned impact.

(2) Appropriately select the particle size and shape of the granular ceramics 8 to use the optimum tsubo 1 according to the type, shape, and size of the object to be treated. The surface of the granular ceramics 8 may be smooth, but by making it rough, the adhesion of the rubber layer can be improved. 8. A reinforcing steel wire 9 is embedded in the lower layer 7. Therefore, when applying tension in the direction of arrow A (see Figure 2) and attaching Wl to the machine, the cape l will not be stretched significantly, and the elongation rate will be around 0.8 to 2%. Therefore, even if the granular ceramics 8 are buried with their tops exposed on the surface, the holding power of the rubber layer will not be lost. Since the granular ceramics 8 can be integrated during Jq sulfur molding, the number of man-hours can be reduced compared to the case where ceramics are adhered, and cost reductions can be achieved.

Next, the embodiment shown in FIGS. 6 to 8 will be described.

Figures 6 and 7 show the granular ceramics 8 on the vertical crosspiece 3.
FIG. 8 shows an example in which the upper part of the vertical bar 3 is projected beyond the horizontal bar 4, and granular ceramics 8 are dispersed and buried in the protruding portion 3a. As can be seen from these examples, the granular ceramics 8 can be
shape, dimensions.

It is possible to appropriately select and distribute the material according to the flow characteristics, thereby making it possible to obtain an inexpensive number.

Note that the granular ceramics 8 may be distributed not only on the surface of the first upper layer portion 60 but also over the entire layer, or may be distributed at a predetermined depth position from the surface.

Effect of the invention As is clear from the above explanation, the present invention uses powder.

Since the granular wear-resistant material is dispersed and buried in the rubber crosspiece that defines a number of through holes in the rubber sardine 1 for disposing of lumps, grains, and lumps, the base rubber layer is protected by granular wear-resistant material, significantly improving durability.

In addition, the dispersed and buried granular wear-resistant material does not constrain and stiffen the base rubber layer, so the vibrations characteristic of rubber particles are not lost, and clogging is less likely to occur. Furthermore, in manufacturing it, the granular wear-resistant material can be embedded when the base rubber layer is vulcanized and molded.
Achieve cost reduction by reducing man-hours.

[Brief explanation of the drawing]

FIG. 1 is an enlarged plan view of the main part of a rubber field according to an embodiment of the present invention, FIG. 2 is a partial perspective view of a field, and FIG. The figure is a plan view of the main part of the mold (lower mold) used for manufacturing the wholesaler, Figure 5 is a graph showing the results of the abrasion resistance test for the mold, and Figures 6 to 8 are
The figure is an explanatory view of the main parts of a rubber emblem according to another embodiment, and FIGS. 9 to 11 are perspective views of the main parts of a known leaf. l...βto 2...Mounting is done on part-3...vertical beam-4.
・Horizontal bar, 5... Through hole, 6... Upper layer, 7...
Lower layer part, 8... granular ceramics, 9... steel wire. Agent: Patent attorney Nozomi Ehara, 2 people Figure 5 Occupancy - (%) Figure 6 Figure 7 Figure 8 Hyo Figure 9 Figure 10

Claims (1)

[Claims] A rubber decoration for processing powder, granular or lumpy materials, characterized by having a powdery wear-resistant material dispersed and embedded in a rubber frame defining a large number of through holes. Rubber wholesaler.