JP5243275B2 - Conveyor for rubber sheet pieces with steel cord - Google Patents

Description

  The present invention relates to a steel cord-containing rubber sheet piece conveying device used for material processing of a carcass belt portion in a tire manufacturing process.

  As this type of device, for example, a device as shown in FIG. 5 is known (see Patent Document 1).

  According to this, the belt-like rubber sheet 100 in which the steel cord is embedded in the longitudinal direction, which is unwound from an unillustrated unwinding device, is cut at a predetermined angle with respect to the longitudinal direction of the steel cord by the cutting device 101. (See cutting line C in the figure). After the cut rubber sheet piece 100A is placed on the carry-out conveyor 103 of the conveying device 102, the rubber sheet piece 100A is positioned on the extension line of the carry-in conveyor 105 of the joining device 104 by shifting the carry-out device 102 leftward in the drawing. Is done. Thereafter, by normal rotation of the carry-out conveyor 103 and the carry-in conveyor 105, the rubber sheet piece 100A is delivered from the carry-out conveyor 103 to the carry-in conveyor 105.

  After the rear end of the preceding rubber sheet piece 100 </ b> A and the front end of the subsequent rubber sheet piece 100 </ b> A delivered in this manner are sequentially butt-joined by a joining unit (not shown) of the joining device 104 to form a belt-like rubber sheet again. Then, it is wound around a take-up device (not shown).

Japanese Patent No. 2923066 Japanese Patent No. 3202409

  By the way, in such a conveying apparatus, the belt end surface of the carry-out conveyor 103 is located closest to the cutting line C by the intervention of the lower blade holding structure portion 106 of the cutting device 101 and the belt support structure portion (not shown) of the carry-out conveyor 103. Thus, the cut rubber sheet piece 100A is supported on the carry-out conveyor 103 in a form overhanged by the dimension W.

  Therefore, if the rubber sheet piece 100B has a cutting angle of the rubber sheet piece (angle θ between the arrangement direction of the steel cord and the cutting line C) of, for example, 20 degrees or more, the rigidity of the steel cord constituting the rubber sheet piece 100B is increased. Therefore, since the overhang portion also maintains the horizontal state without sagging, it can be smoothly transferred from the carry-out conveyor 103 onto the carry-in conveyor 105.

  However, in recent years, in order to improve the function of the tire structure, there is a rubber sheet piece 100A in which the cutting angle becomes a low angle (for example, about 6 degrees). A portion that is not supported by the belt of the carry-out conveyor 103 occurs over the length indicated by the dimension L on the front end side of the portion, and the portion cannot be supported by the rigidity of the steel cord. There was a problem that it could not be smoothly transferred onto the conveyor 105.

  In order to smoothly transfer the rubber sheet piece 100A having a hanging overhang portion from the carry-out conveyor 103 onto the carry-in conveyor 105, the overhang portion is horizontally placed with a magnet, a vacuum pad (see Patent Document 2), or the like. Although it is possible to additionally install a holding device, there is a problem that the structure becomes complicated and the cost is increased.

  Therefore, the present invention provides a steel cord-containing rubber sheet piece conveying device capable of smoothly carrying out a rubber sheet piece cut at a low angle from a cutting device and carrying it into a joining device with a simple device. Objective.

In order to achieve such an object, a steel cord-containing rubber sheet piece conveying device according to the present invention comprises:
It is interposed between a cutting device that cuts a belt-like rubber sheet with a steel cord embedded in the longitudinal direction at a predetermined angle with respect to the longitudinal direction of the steel cord and a joining device that sequentially joins the cut rubber sheet pieces. In the apparatus for transporting rubber sheet pieces with steel cords equipped with a carry-out conveyor for carrying out the rubber sheet pieces from the cutting device to the joining device,
The cutting device cuts the rubber sheet piece in an overhanging state from an end of the carry-out conveyor,
The sliding plate which supports the overhang part from the said carrying-out conveyor of the said cut | disconnected rubber sheet piece was installed locally in the cutting device side front of the said carrying-out conveyor, It is characterized by the above-mentioned.

The forward end portion of the rubber sheet piece overhanging portion is moved forward by the normal rotation in the rubber sheet piece feeding direction of the carry-out conveyor before the shift to the extension line of the carry-in conveyor in the joining device of the conveying device including the carry-out conveyor. It is supported on a sliding plate.

  According to the steel cord-containing rubber sheet piece conveying device according to the present invention, even if the rubber sheet piece is cut at a low angle, the tip of the overhang portion from the carry-out conveyor in the conveying device is interposed via the sliding plate. Can be smoothly transferred to the joining apparatus. The sliding plate can be installed simply and inexpensively.

It is structure explanatory drawing of the conveying apparatus of the rubber sheet piece containing the steel cord which shows one Example of this invention. It is operation | movement explanatory drawing of the conveying apparatus of the rubber sheet piece containing a steel cord. FIG. 3 is a layout diagram of a steel cord-containing rubber sheet piece conveying device and its peripheral devices. It is an AA arrow line view of FIG. It is operation | movement explanatory drawing of the conveying apparatus of the conventional rubber sheet piece with a steel cord.

  Hereinafter, a steel cord-containing rubber sheet piece conveying apparatus according to the present invention will be described in detail with reference to the drawings by way of examples.

  FIG. 1 is a diagram illustrating the structure of a steel cord-containing rubber sheet piece conveying device according to an embodiment of the present invention, FIG. 2 is a function diagram of the steel cord-containing rubber sheet piece conveying device, and FIG. 3 is a steel cord-containing rubber sheet. FIG. 4 is an AA arrow view of FIG. 3.

  As shown in FIG. 3, for example, an unwinding device 10A for cutting at a low angle of about 6 degrees and an unwinding device 10B for cutting at a high angle of about 30 degrees, for example, are installed, and the steel cord unwound from these is installed. The band-shaped rubber sheet 11A for low-angle cutting and the band-shaped rubber sheet 11B for high-angle cutting embedded in the longitudinal direction are cut at the predetermined angle described above with respect to the longitudinal direction of the steel cord by a cutting device 12 described later. (See cutting line C in the figure).

  The rubber sheet piece 11a cut at a low angle and the rubber sheet piece 11b cut at a high angle are placed on a carry-out conveyor 14 of a later-described transfer device 13 and then left in the drawing of the carry-out conveyor 14. The rubber sheet pieces 11a and 11b are placed on the carry-in conveyor 16 from the carry-out conveyor 14 by the forward rotation of the carry-out conveyor 14 and the carry-in conveyor 16 thereafter. Is to be handed over.

  Then, the rear ends of the preceding rubber sheet pieces 11a and 11b and the front ends of the succeeding rubber sheet pieces 11a and 11b, which have been delivered as described above, are sequentially butt-joined by a joining unit (not shown) of the joining device 15 and again belt-shaped. After becoming a rubber sheet, it is wound up on the scraping device 17.

  As shown in FIG. 4, the cutting device 12 includes a table 20 to which the belt-like rubber sheets 11 </ b> A and 11 </ b> B are fed, a lower blade 22 composed of a long blade having a rectangular cross section, a mounting base 23 for mounting the lower blade, and the mounting. A lower blade holding structure portion 23a attached to the base 23 and an upper blade 21 made of a disk cutter provided on the lower blade 22 are provided. The upper blade 21 is a lower blade 22 by an appropriate pressing device and driving device. The belt-like rubber sheets 11A and 11B described above are cut into rubber sheet pieces 11a and 11b and are placed on the carry-out conveyor 14 of the conveying device 13 by being moved and rotated in the longitudinal direction. It has become.

  As shown in FIGS. 1 and 2, the conveying device 13 has an overhang portion (see its tip portion 11 c) from the carry-out conveyor 14 of the rubber sheet piece 11 a cut at a low angle on the lower surface of the overhang portion. A sliding plate 25 supported from the side is installed.

  In the illustrated example, the sliding plate 25 is formed in a rectangular small piece shape having a notch 25a so as to avoid interference with the roller 14b around which the belt 14c of the carry-out conveyor 14 is wound. It is fixed on the positioned belt support structure 14a. That is, it is installed locally in front of the cutting device side of the carry-out conveyor 14.

  Accordingly, the overhang portion of the rubber sheet piece 11a cut by the cutting device 12 is once carried on the lower blade holding structure portion 23 of the cutting device 12, and in this state, the carry-out conveyor 14 of the conveying device 13 is rotated forward. Then, the tip end portion 11c of the overhang portion in the rubber sheet piece 11a is supported on the sliding plate 25 by feeding it a predetermined distance.

  Thereafter, the unloading device 13 is shifted to the left in the figure while the unloading conveyor 14 is stopped, and is positioned on the extension line of the loading conveyor 16 of the joining device 15. That is, the cutting line C of the rubber sheet piece 11 a is carried out to a position that matches the joining reference line of the joining device 15.

  Next, if the carry-out conveyor 14 is rotated forward again, the tip 11c of the overhang portion slides on the sliding plate 25 and is transferred onto the belt in the carry-in conveyor 16 of the joining device 15 which is also under normal rotation. Then, the rubber sheet piece 11 a is transferred from the carry-out conveyor 14 of the transport device 13 to the carry-in conveyor 16 of the joining device 15.

  Thus, according to the present embodiment, even if the rubber sheet piece 11 a is cut at a low angle, the tip end portion 11 c of the overhang portion from the carry-out conveyor 14 in the transfer device 13 is interposed via the sliding plate 25. It can be smoothly transferred to the joining device 15.

  Further, since a simple structure is sufficient to install the sliding plate 25 without additionally installing a device for holding the overhang portion horizontally with a magnet, a vacuum pad or the like, a large cost increase is not caused.

  Needless to say, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the present invention. For example, the sliding plate is not local and may have a length over the entire region (full length) of the overhang portion of the rubber sheet piece.

  It is preferable that the steel cord-containing rubber sheet piece conveying apparatus according to the present invention is used in a manufacturing process of a pneumatic tire such as an automobile.

10A Unwinding device for low-angle cutting 10B Unwinding device for high-angle cutting 11A Strip-shaped rubber sheet for low-angle cutting 11B Strip-shaped rubber sheet for high-angle cutting 11a Rubber sheet piece cut at low angle 11b At high angle Cut rubber sheet piece 11c Overhang portion of rubber sheet piece cut at low angle 12 Cutting device 13 Conveying device 14 Unloading conveyor 14a Belt support structure 15 Joining device 16 Loading conveyor 17 Cutting device 20 Table 21 Upper blade 22 Lower blade 23 Mounting base 23a Lower blade holding structure 25 Slide plate 25a Notch

Claims (2)

It is interposed between a cutting device that cuts a belt-like rubber sheet with a steel cord embedded in the longitudinal direction at a predetermined angle with respect to the longitudinal direction of the steel cord and a joining device that sequentially joins the cut rubber sheet pieces. In the apparatus for transporting rubber sheet pieces with steel cords equipped with a carry-out conveyor for carrying out the rubber sheet pieces from the cutting device to the joining device,
The cutting device cuts the rubber sheet piece in an overhanging state from an end of the carry-out conveyor,
Conveying a rubber sheet piece containing a steel cord, characterized in that a sliding plate for supporting an overhang portion of the cut rubber sheet piece from the carry-out conveyor is locally installed in front of the cutting device side of the carry-out conveyor. apparatus. The forward end portion of the rubber sheet piece overhanging portion is moved forward by the normal rotation in the rubber sheet piece feeding direction of the carry-out conveyor before the shift to the extension line of the carry-in conveyor in the joining device of the conveying device including the carry-out conveyor. The apparatus for conveying a rubber sheet piece containing a steel cord according to claim 1, wherein the apparatus is supported on a sliding plate.

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