JP2006316945A - V-ribbed belt, and its mark engraving method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an easy-to-read engraved mark, and to avoid deterioration due to traveling. <P>SOLUTION: In the V-ribbed belt 1, pluralities of upper side and lower side rib rubber parts 4 and 5 are provided on both upper and lower faces of an adhered rubber part 3 embedded spirally with core wire 2. The rib rubber parts 4 and 5 have upper and lower ribs 4a and 5a extending in a belt longitudinal direction, and a mark 6 is engraved by a laser beam on rib tip faces 4b and 5b of the upper and lower ribs 4a and 5a. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a V-ribbed belt and a mark marking method thereof.

  Generally, in the transmission belt, the manufacturer name, product name, manufacturing date, manufacturing lot No. It is performed to provide a mark including. As a method of providing the mark, conventionally, a mark material is usually used. However, a method of printing a mark by directly ejecting ink onto the back of the belt using an ink jet printer is known (for example, Patent Document 1).

  However, when the mark is transferred to the back of the belt or the transfer mark material and the belt are integrated, the mark is rubbed by the pulley when the back of the belt with the mark is in contact with the pulley and used as a drive surface. There was a problem that it was easy to disappear, and the special mark became unreadable shortly after running the belt. Further, even in the method of directly printing the mark on the back surface of the belt using an ink jet printer, there is a problem that the mark disappears because the pulleys wear the back surface of the belt uniformly.

  Therefore, in order to leave a clear mark over a long period of time, the laser beam is applied to one or both of the belt outermost surfaces while adjusting the reflection angle by at least one scanning mirror, and has a depth of 0.1 to 1 mm. Marking a mark has been proposed as a mark marking method for a transmission belt (see, for example, Patent Document 2).

According to this method, the mark obtained by irradiating with the laser beam is removed from the region that directly contacts the pulley, and the depth is set to 0.1 to 1 mm. It can be engraved without being given, and the mechanical properties of the belt after irradiation with laser light are not deteriorated, and a clear mark can remain for a long time even when the belt is run.
Japanese Unexamined Patent Publication No. 7-238992 (paragraphs 0015 to 0023 and FIGS. 1 to 3) JP 2001-205463 A (paragraphs 0016 to 0022 and FIGS. 1 and 2)

  The technique described in Patent Document 2 is a method of marking a mark on the outermost surface of the belt with a laser beam. However, since the stamped portion is a rubber layer or a core wire layer, the color is different and the stamped mark is difficult to read. .

  Further, since the stamped portion is on the side surface of the belt, the mark (character) cannot be read due to deterioration due to running.

  The present invention provides a V-ribbed belt that can easily read a marked mark and avoid deterioration due to running, and a mark marking method thereof.

  The invention of claim 1 is a V-ribbed belt in which a rib rubber portion is provided on the lower surface of an adhesive rubber portion in which a core wire is embedded in a spiral shape, and a plurality of ribs extending in the belt longitudinal direction are formed on the rib rubber portion. A mark by a laser beam is engraved on a rib front end surface of the rib rubber portion. Here, the mark by the laser beam may be stamped on the rib tip surfaces of all the rib rubber portions, or may be stamped on the rib tip surfaces of some of the rib rubber portions.

  In the invention of claim 2, upper and lower rib rubber portions are respectively provided on the upper and lower surfaces of the adhesive rubber portion in which the core wire is embedded in a spiral shape, and a plurality of upper and lower ribs extending in the longitudinal direction of the belt are formed on each rib rubber portion. The V-ribbed belt is characterized in that a mark by a laser beam is engraved on the rib leading end surfaces of both the upper and lower rib rubber portions or the rib leading end surface of one of the rib rubber portions.

  In this way, in the V-ribbed belt (or double V-ribbed belt), the manufacturer name, product name, date of manufacture, and production lot number. Since the marked portion of the mark including the mark is the rib tip surface of the rib rubber part, the marked mark is easy to read. In addition, since the rib end surface does not contact the pulley, there is no deterioration due to traveling even after traveling for a long time, and the mark can be easily read, so that the manufacturing lot can be traced over a long period of time.

  According to a third aspect of the present invention, there is provided a mark marking method for a V-ribbed belt in which a laser beam is irradiated while adjusting a reflection angle by at least one scanning mirror and a mark is stamped on the V-ribbed belt. A rib rubber portion is provided on the lower surface of the adhesive rubber portion embedded in the shape, and a plurality of ribs extending in the longitudinal direction of the belt are formed on the rib rubber portion, and a mark is imprinted on a rib front end surface of the rib rubber portion. It is characterized by.

  According to a fourth aspect of the present invention, there is provided a mark marking method for a V-ribbed belt in which a laser beam is irradiated with at least one scanning mirror while adjusting a reflection angle to mark the mark. Side and lower rib rubber portions are respectively provided on both upper and lower surfaces of the upper and lower ribs, and a plurality of upper and lower ribs extending in the longitudinal direction of the belt are formed on each rib rubber portion. Both ribs of the upper and lower rib rubber portions A mark is stamped on the tip end surface or the rib tip end surface of one of the rib rubber portions.

  In this way, the above-mentioned mark that makes it easy to read the marked mark and can track the production lot over a long period of time can be easily stamped on the rib tip surface of the rib rubber part.

  In these cases, as described in claim 5, it is preferable that the marking is performed and the V-ribbed belt is wound around two support members and stretched (V-ribbed belt). Here, the two support members do not need to be the same, and may have different sizes or shapes, and a support roller, a support arm, or the like can be used as the support member. Further, not only when the support member is stationary and the mark is imprinted, it is also possible to drive the support member and imprint the mark while rotating the V-ribbed belt.

  In this way, the V-ribbed belt is wrapped around the pair of support members, and the mark is engraved with the V-ribbed belt stretched. Therefore, the mark is imprinted on the rib tip surface of the rib rubber portion while the V-ribbed belt is stably supported. can do.

  In the V-ribbed belt (or double V-ribbed belt), the manufacturer name, product name, date of manufacture, and production lot No. are as described above. Since the marked portion of the mark including the mark is the rib tip surface of the rib rubber part, the marked mark is easy to read. Moreover, since the rib front end surface does not come into contact with the pulley, there is no deterioration due to traveling even after traveling for a long time, and the mark is easy to read. Therefore, it is possible to track the production lot and the like over a long period from the start of use.

  According to the third and fourth aspects of the invention, such a V-ribbed belt can be easily manufactured.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a perspective view of a double V-ribbed belt in which a mark is engraved by the method of the present invention.

  As shown in FIG. 1, a double V-ribbed belt 1 has a core 2 made of a high strength and low elongation cord embedded in an adhesive rubber part 3, an upper rib rubber part 4 on the upper side, and a lower side on the lower side. Rib rubber portions 5 are provided. The upper rib rubber portion 4 and the lower rib rubber portion 5 are provided with a plurality of upper and lower ribs 4a, 5a extending in the belt longitudinal direction. The upper and lower rib rubber parts 4 and 5 are made of, for example, nylon 6, nylon 66, polyester, cotton, or aramid as a base rubber material in order to improve the side pressure resistance of the rib rubber parts 4 and 5 functioning as a compression rubber part. It is formed of a short fiber mixed rubber obtained by mixing short fibers.

  The pitches of the upper and lower ribs 4a and 5a provided on the upper and lower rib rubber portions 4 and 5 are equally spaced, and the positions of the upper and lower ribs 4a and 5a are also matched. Note that the pitches of the upper and lower ribs 4a and 5a do not have to be equal, and the positions of the upper and lower ribs 4a and 5a do not have to coincide.

  In the upper and lower rib rubber portions 4 and 5, the rib front end surfaces 4b and 5b of the upper and lower ribs 5 and 6 have a manufacturer name, a product name, a manufacturing date, and a manufacturing lot number. A mark 6 represented by the above is engraved. The stamped mark 6 is obtained by irradiating a laser beam as will be described later, and the depth thereof is set to 0.1 to 1 mm. Here, if the depth is in the range of 0.1 to 1 mm, it may disappear relatively early due to aging when the depth is less than 0.1 mm. This is because it tends to accumulate and there is a possibility that dust collected during traveling may be released and contaminate other parts. The width of the line forming the mark 6 is also about 0.1 to 1 mm. The mark 6 may be stamped on all the rib tip surfaces 4b and 5b of the rib rubber portions 4 and 5, or may be stamped only on a part of the rib tip surfaces 4b and 5b.

  Therefore, since the V-ribbed belt 1 is provided with the marks 6 on the rib front end surfaces 4b and 5b, as in the technique described in Patent Document 2 provided on the belt outermost surface (rib side surface), the V-ribbed belt 1 is spirally formed with laser light. There is no possibility of damaging the cut core wire 2, and the belt performance is not affected.

  Since such a V-ribbed belt 1 is stamped on the rib tip surfaces 4b and 5b of the rib rubber portions 4 and 5, the mark 6 (mark of manufacturer name, product name, manufacturing date, manufacturing lot number, etc.) Are easy to distinguish and easy to read. In particular, even when the belt is wound around the pulley, the rib tip end surface is not in contact with the pulley surface, so that the mark 6 can be easily read. In addition, even if the V-ribbed belt 1 deteriorates due to traveling, the rib front end surfaces 4b and 5b do not come into contact with the pulley, so there is no deterioration due to traveling and the mark 6 can be read over a long period of time. Therefore, as long as the V-ribbed belt 1 (rib rubber portions 4 and 5) is not damaged by an abnormal environment such as an abnormality of the pulley shape and the biting of dust, the marks 6 on the rib tip surfaces 4b and 5b can be read.

As shown in FIG. 2, the method of marking the mark 6 by irradiating the above laser beam is as follows. First, a marking laser beam 11 such as a CO ₂ laser beam oscillated from a laser oscillation section (not shown) is shown. The optical spot is adjusted so that the laser spot is minimized at the rib tip surfaces 4b and 5b.

  Then, while adjusting the reflection angle of the laser beam 11 by the scan mirrors 12 and 13, the laser beam is irradiated toward the rib tip surfaces 4 b and 5 b of the double V-ribbed belt 1 to mark the mark 6 within a predetermined range. The laser beam 11 is instantly melted and vaporized by impressing a small portion of the rib rubber on the rib tip surfaces 4b and 5b and the short fibers contained in the rib rubber.

  For example, as shown in FIG. 3, the double V-ribbed belt 1 is wound around a pair of support rollers 21 and 22 (for example, by adjusting the distance between the support rollers 221 and 22) and is marked in a stretched state. Carry out the engraving. The position for marking the mark 6 is adjusted by changing the support state by the support rollers 21 and 22 (for example, by rotating the support rollers 21 and 22).

  Specifically, for example, the double V-ribbed belt 1 is first supported by the support rollers 21 and 22 so that the upper rib 4a of one rib rubber portion 4 faces upward. Then, after rotating the support rollers 21 and 22 and marking the mark 6 at a predetermined position on the rib front end surface 4b, the V-ribbed belt 1 is reversed so that the lower rib 5a of the other rib rubber portion 5 faces upward. Similarly, a mark 6 is imprinted on the rib tip surface 5b opposite to the rib tip surface 4b. In this way, the marks 6 are imprinted on the rib end surfaces 4b and 5b.

  The laser beam 11 is emitted toward the scan mirrors 12 and 13 by the control of the control unit to which the data about the mark 6 has been input in advance, and the ON / OFF of the laser beam 11 is controlled. A desired mark can be engraved on the rib tip surfaces 4b and 5b.

  The above embodiment is applied to a (double) V-ribbed belt having a plurality of upper and lower rib rubber portions extending in the belt longitudinal direction on both upper and lower surfaces of an adhesive rubber portion in which a core wire is embedded in a spiral shape. The present invention also applies to a V-ribbed belt having a plurality of rib rubber portions extending in the belt longitudinal direction on the lower surface of the adhesive rubber portion in which the core wire is embedded in a spiral shape by marking a mark on the rib tip surface of the rib rubber portion. Can be applied to.

It is a perspective view of the double V ribbed belt in which the mark was engraved by the method of the present invention. It is explanatory drawing of the method of marking a mark on a double V ribbed belt. It is explanatory drawing of the method of marking a mark on a double V ribbed belt.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Double V ribbed belt 2 Core wire 3 Adhesive rubber part 4 Upper rib rubber part 4a Upper rib 4b Rib tip surface 5 Lower rib rubber layer 5a Lower rib 5b Rib tip surface 6 Mark 11 Laser beam 12, 13 Scan mirror 21, 22 Support roller

Claims (5)

A V-ribbed belt in which a rib rubber portion is provided on the lower surface of the adhesive rubber portion in which the core wire is embedded in a spiral shape, and a plurality of ribs extending in the longitudinal direction of the belt are formed on the rib rubber portion,
A V-ribbed belt, wherein a mark by a laser beam is engraved on a rib front end surface of the rib rubber portion. This is a V-ribbed belt in which upper and lower rib rubber portions are respectively provided on both upper and lower surfaces of an adhesive rubber portion in which a core wire is embedded in a spiral shape, and each of the rib rubber portions is formed with a plurality of upper and lower ribs extending in the belt longitudinal direction. And
A V-ribbed belt, wherein a mark by a laser beam is engraved on a rib front end surface of both the upper and lower rib rubber portions or a rib front end surface of one of the rib rubber portions. In a mark marking method for a V-ribbed belt, a laser beam is irradiated while adjusting a reflection angle by at least one scanning mirror, and a mark is stamped on the V-ribbed belt.
In the V-ribbed belt, a rib rubber portion is provided on the lower surface of the adhesive rubber portion in which the core wire is embedded in a spiral shape, and a plurality of ribs extending in the belt longitudinal direction are formed on the rib rubber portion.
A mark marking method for a V-ribbed belt, wherein a mark is stamped on a rib front end surface of the rib rubber portion. In a mark marking method for a V-ribbed belt in which a laser beam is irradiated while adjusting a reflection angle by at least one scanning mirror to mark a mark,
In the V-ribbed belt, side and lower rib rubber portions are provided on both upper and lower surfaces of an adhesive rubber portion in which a core wire is embedded, and a plurality of upper and lower ribs extending in the longitudinal direction of the belt are formed on each rib rubber portion. Yes,
A mark marking method for a V-ribbed belt, wherein a mark is stamped on a rib leading end surface of both the upper and lower rib rubber portions or a rib leading end surface of one of the rib rubber portions.   5. The method of marking a V-ribbed belt according to claim 3, wherein the marking is performed in a state where the V-ribbed belt is wound around a pair of support members and stretched.

Images