JPS5978740A - Driving method of belt - Google Patents

Abstract

PURPOSE:To apply continuously a pattern having excellent accuracy to a belt- like body by attaching both side ends of an annular belt which is punched with a geometrical pattern and travels in parallel with the belt-like body under travel to an annular toothed belt and receiving the driving force of gears in the toothed belt. CONSTITUTION:A belt 13 which is attached with toothed belts 14, 14' on the right and left and has slits 12 is driven together with gears 15a, 15b, 15c, 15d, 15a', 15b', 15c', 15d' by a driving device. Steel shot 17 is flasted, via the belt 13, by an impeller 16 to impart the strain conforming to the shape of the slits 12 to a steel strip 11. The traveling speed of the steel strip from a pinch roll 23 is inputted to an arithmetic control device 24, by which said speed is compared with the driving speed of the belt 13 and the traveling speed of the belt 13 is so controlled as to synchronize with the traveling speed of the steel strip. Since the driving force of the belt 13 is entirely borne in the tooth parts of the belts 14, 14', the slits 12 of the belt 13 are kept free from deformation.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for driving a belt with perforated geometric patterns. Generally, the belt is driven by driving at least one of a pair of rollers 2.3 as shown in FIG. 5 will be attached.

The material used for the belt is a rubber sheet or iron plate, but for conveying heavy objects or high-speed conveyors, it may be reinforced with a cinchon, etc. Depending on the nature of the object to be conveyed, for example, it may be used to remove moisture, such as washed coal or slag. In order to convey the contained material, the belt may be provided with small holes for dehydration.

In this way, belt conveyors are mainly used for conveying objects, but they can also be used as shielding zones for light rays, fluids, or projectiles by using endless belts that are perforated at certain intervals and provided with slits or geometric patterns. Sometimes.

For example, as shown in Japanese Patent Application No. 113672/1987, previously filed by one of the present inventors, a device that uses a belt with slits to project steel shot onto the surface of a copper strip to give minute molds. Although it is important to synchronize the speeds of the copper strip and the slit belt, constancy of the slit shape is also an essential condition.

That is, the slit provided in the belt must not be deformed even if the belt is subjected to rotational (traction) force. but,
The shape, material, dimensions, etc. of the belt are limited by its intended use, so there is a limit to its strength, and if the belt itself is directly driven or pulled, tension will be applied to the belt, causing it to deform. , the slit shape changes or the distance between the belt and the copper strip changes, making it impossible to impart the desired uniform distortion or pattern.

The present invention has solved these problems, and the gist of the invention is to punch a geometric pattern running parallel to the running strip in the process of continuously imparting geometric distortions and patterns to the running strip. Both ends of the annular belt are attached to an annular toothed belt so that the toothed belt receives the tension necessary for driving the belt by gears, prevents phase difference between both ends of the belt, and prevents sagging in the belt width direction. This is a belt driving method characterized by driving a toothed belt by providing one or more guides.Next, a steel shot is projected onto a belt-shaped body to create a micro-strain of a desired size and shape. The present invention will be described in detail with reference to an example of a device for imparting.

Figures 2(a), (b), and (C) show an embodiment of the present invention, and Figure 2(a) is a side view of the overall configuration.
b) is a plan view of the belt with slits, and Fig. 2(C)
2A and 2B show side views of the meshing state of the toothed belt and the gear, respectively.

In FIG. 2(a), a belt 13 with slits 12 that runs in synchronization with the steel strip 11 is replaced by left and right toothed belts 14.
．． 14' and gears 158, 151), 15
C115d, 15a', 15b', 15C', 15d
' are both driven by a drive device (not shown). The steel shot 17 is projected by the impeller 16 across the slitted belt 13 and is subjected to four strains on the steel strip 11.

In other words, the steel strip 11 is given a strain that mimics the shape of the slit 12. 18 is a casing for shot blasting, and 2 is a pinch roll for feeding the copper strip, and at the same time detects the running speed of the steel strip 11.

The diagonal is an arithmetic control device for speed synchronizing the steel @ 11 and the slit belt 13. The steel strip feeding speed is input from the vinyl roll at the speed detection end, and compared with the driving speed of the belt drive device, the difference is detected. If so, the versit drive is controlled to match the feeding speed of the copper strip.

In addition, gears 15a and 15a', 151) and 15b', 15
0 and 15C', and 15d and 15d' are connected by a connecting shaft 19 for rotational synchronization. (Figure 2(b))
In this way, the left and right toothed belts 14, 14' mesh with the gears 15, respectively, and rotate synchronously with the slit belt 13.

At this time, all the driving (traction) force is applied to the toothed belt 14.14'
The slit 12 of the slit belt 13 is not deformed because it is received by the teeth of the slit belt 13.

Furthermore, the method of attaching the slit belt 3 and the toothed belt 14, 14' can be arbitrarily selected depending on the purpose and use, such as an adhesive bonding method (not shown) or a bolt-nut fastening method (not shown).

In FIG. 2(a), the slit belt 13 is placed away from the steel strip 11 to make the explanation easier to understand.
Both may be brought into contact.

On the other hand, if the distance between the axes of the gears 15a to 15d' is long, that is, if the belt is long, the toothed bell F14, 14' may sag horizontally. The sagging of the belt can be solved by supporting it with the intermediate support roller 4, but the lateral runout can be solved by applying vibration to the belt with slits 3 or by supporting the belt with slits 1:
If the clearance between the steel strip 11 and the belt with slits 13 is changed, the shape (dimensions) of the slits will be changed, causing unconstrained strain.

FIGS. 3(a) and 3(b) are front sectional views showing another embodiment for solving these problems, in which at least one of the left and right toothed belts 14, 14' and both The flanged roller 20 (Fig. 3 (a)) is also L < means the grooved guide 2.
1 (Fig. 3(b)).

The above-mentioned flanged roller 20 can also be installed at key points along the running of the toothed belt 14, but in the 4th position device using shot blast shown in Fig. 2(a), a steel shot is not required. It is also possible to simply provide it locally in the area to be projected. 22 is a mounting base.

Note that the flanged roller or grooved guide 21 is a fixed type (
(Fig. 3(a)% (1))) or a spring or the like or a tension type (not shown) that is stretched outward. Further, the flanged roller may be a flat roller or a flanged gear.

Above, the embodiments of the present invention have been explained by taking as an example a four-strain device using a copper strip using shot blasting, but non-ferrous metal strips or paper may also be used. It can also be applied to In addition, the material and dimensions of the annular belt can be selected without regard to strength, such as a thin one, which not only has economical effects, but also improves accuracy and sharpness by optimizing the thickness of the annular belt. A masking effect can now be obtained.

[Brief explanation of drawings]

Fig. 1 is a perspective view M1 showing a conventional belt driving method Fig. 2 (-) is a side view of the overall configuration showing an embodiment of the present invention, Fig. 2 (1)) is a partially cutaway plan view of a belt with slits. Figure, 2nd
FIG. 3(C) is a side view of the meshing portion of the toothed belt and the gear, FIG. 3(a) is a dimensional view of the flanged roller, and FIG. 3(b) is a front view of the grooved guide plate. 1 is a belt, 2 is a roller, 3 is a roller, 4 is an intermediate roller, 5 is a tension low sea, 11 is a copper band, 12 is a slin), i3 is a belt with a slit, 14.14' is a toothed belt, 15a1151), 15C115d, 15a
', 15b', 150', 15d' are gears, 16 is an impeller, 17 is a steel shot, 18 is a shot blast casing, 19 is a connecting shaft, 20 flanged low seams, 2
1 is a groove type guide, 22 is a mounting base, n is a pinch roll, and Sae is an arithmetic control device. Patent applicant Nippon Steel Corporation times Irie Kosan Co., Ltd.

Claims (2)

[Claims] (1) In the process of continuously imparting geometric distortions and patterns to a running band-shaped body, both ends of a circular belt with perforated geometric patterns that run parallel to the running band-shaped body are attached to a circular toothed belt. A method for driving a belt, characterized in that a toothed belt receives the tension necessary for driving the belt by gears, and also prevents the occurrence of a phase difference between both ends of the belt. (2) The method for driving a belt according to claim 1, characterized in that the annular toothed belt is driven by providing one or more guides.