JPH0513511U - Filter cloth - Google Patents

Abstract

(57) [Summary] [Purpose] To reduce the time required for bonding work, solve the problems of thread breakage and stitch shrinkage, and maintain stable running performance. [Structure] An endless filter cloth in which guide belts 2 are attached to both sides of the filter cloth body 1 in the width direction.
Between both ends in the traveling direction of the machine, and at least one of the filter cloth body 1 and the guide belt 2 are ultrasonically welded to shorten the working time required for the bonding, and sewing with a sewing machine at the time of bonding the conventional guide belts. The filter cloth does not shrink, the filter cloth does not lose its shape, and the filter cloth body 1 is not wasted.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a filter cloth in which the time for adhering the filter cloth is shortened and there is no thread breakage or sewing shrinkage at the adhered portion.

[0002]

[Prior Art]

 BACKGROUND ART In today's industrial fields such as industry and chemistry, filtration of industrial water, heavy oil, or liquids such as chemicals has become an indispensable work process. Filtration of the bulk liquid used is often done by filtration through a mechanized working process.

A conventional filter cloth used in this filtering device has three layers of a filter cloth main body, a protective material and a guide belt made of synthetic rubber, which are stacked on both sides in the width direction. The sewing machine sewed it, but the area between both ends in the running direction was further sewn into an endless shape, which was used by mounting it on a pair of sprockets.

Further, the guide belt is provided with holes at appropriate intervals in the longitudinal direction, and the holes are sequentially meshed with the teeth of the sprocket, so that the running property is stabilized. There is.

[0005]

[Problems to be solved by the device]

 However, sewing with a sewing machine takes a lot of time, and there are problems that must be solved, such as thread breakage when the filter cloth 1 is used and sewing shrinkage when finished. For example, at the time of sewing, the filter cloth main body having a total length of 5 m is shrunk at a rate of about 30 to 40 mm, so that a filter cloth having a deformed overall shape is manufactured, and this shape collapse is also caused. In order to prevent it, it was necessary to calculate the amount of shrinkage before sewing and prepare an extra length 1 11 filter cloth body.

An object of the present invention is to provide a filter cloth that can compensate for these drawbacks, shorten the bonding work time, solve the problems of thread breakage and stitch shrinkage, and maintain stable running performance. To do.

[0007]

[Means for Solving the Problems]

 In order to achieve the above object, the filter cloth of the present invention is an endless filter cloth in which guide belts are attached to both sides in the width direction of the filter cloth body. At least one of the cloth body and the guide belt is welded by ultrasonic waves.

[0008]

[Action]

 According to the filter cloth of the present invention, since the bonding is performed by ultrasonic welding, the work time required for the bonding can be shortened, the sewing shrinkage due to the sewing machine at the time of bonding the conventional guide belt is eliminated, and the shape of the filter cloth is not deformed. This eliminates the waste of the filter cloth itself. Further, since no thread is used for adhesion, there is no need to worry about thread breakage at the sewn portion.

Therefore, the service life of the filter cloth can be extended, and various expenses can be saved.

[0010]

【Example】

 The present invention will be described below with reference to the embodiments shown in the drawings.

The filter cloth of the present invention is endless as shown in FIGS. 1 and 2. On both ends 2 in the width direction of the filter cloth body 1 of this filter cloth, a protective material 3 and a guide belt 4 made of synthetic rubber are laminated in this order in three layers. The guide belt 4 is provided with holes 6, 6 ... At the same intervals as the teeth of the sprocket 5.

In the present embodiment, the filter cloth body 1, the protective material 3 and the guide belt 4 are ultrasonically welded using an ultrasonic welder instead of the conventional sewing using a sewing machine. .. The welded portion is indicated by a solid zigzag line with reference numeral 7 in FIG.

Further, as shown in FIGS. 3 and 4, both ends in the running direction of the filter cloth body 1 are ultrasonically treated by using an ultrasonic welder so that the filter cloth body 1 is endless. Therefore, it is welded. The welded portion is shown by a zigzag solid line with reference numeral 8 in FIG.

In practice, after the two ends of the filter cloth body 1 in the running direction are welded to each other to form an endless shape, the filter cloth body 1 is guided to both sides in the width direction via the protective members 3. Welding the belt 4 is preferred as a sequence.

In the filter cloth of this embodiment having the above-described structure, the holes 6, 6, ... Of the guide belts 4 attached by welding are provided at both ends of the filter cloth body 1 in the width direction. The sprocket is mounted on the sprockets 5 and 5 so as to be fitted to the teeth of the grate 5 and 5.

Compared with sewing using a sewing machine, the above-described ultrasonic welding can be performed with a uniform force regardless of the length of the bonded portion, and the welding width can be freely selected according to the design conditions. You can Moreover, the welding work is simple and efficient, and the working time is shortened. In addition, ultrasonic welding compensates for the disadvantage that the more the material is harder when sewing with a sewing machine, the greater the shrinkage of stitches, and the size is stable, the shape of the filter cloth does not collapse, and problems such as thread breakage can be solved. ..

The material of the filter cloth body 1 may be any material that can be ultrasonically welded. For example, if a synthetic resin material such as polyethylene, Tetron (registered trademark), nylon, or polypropylene is used. Good.

The filter cloth thus ultrasonically welded is economical, economical, and has high quality with no yarn breakage.

It should be noted that the present invention is not limited to the above-mentioned embodiment, but can be modified as necessary. For example, if necessary, only between the both ends of the filter cloth main body in the traveling direction and between the filter cloth main body and the guide belt may be ultrasonically welded.

[0020]

[Effect of the device]

 As described above, the filter cloth of the present invention can shorten the bonding work time, solve the problems of thread breakage and stitch shrinkage, maintain its shape without losing its shape, and maintain stable running performance. The service life of the cloth can be extended and various expenses can be saved.

[Brief description of drawings]

FIG. 1 is a partial perspective view showing the configuration of a filter device using an embodiment of a filter cloth of the present invention.

FIG. 2 is a partially enlarged perspective view showing the configuration of the filter cloth shown in FIG.

FIG. 3 is a longitudinal cross-sectional view of a center portion in the width direction showing an endless filter cloth body in the filter cloth of FIG.

FIG. 4 is an AA of FIG. 3 showing a joint portion of an endless filter cloth.
Cross section by line

[Explanation of symbols]

 1 Filter cloth body 2 Edge part 3 Protective material 4 Guide belt 5 Sprocket 6 Holes 7, 8 Ultrasonic welding part

Claims (1)

[Scope of utility model registration request] 1. An endless filter cloth in which guide belts are attached to both sides of the filter cloth body in the width direction, at least between both ends in the running direction of the filter cloth body, and between the filter cloth body and the guide belt. A filter cloth characterized in that one is welded by ultrasonic waves.