JP5738816B2 - Rubber sheet manufacturing apparatus and rubber sheet picking apparatus - Google Patents

Description

  The present invention relates to a rubber sheet manufacturing apparatus that manufactures an unvulcanized rubber sheet of a tire material, and a rubber sheet pick-up apparatus used in the rubber sheet manufacturing apparatus.

  In the tire manufacturing process, unvulcanized rubber sheets used for tread rubber, carcass ply, and the like are generally manufactured by a rubber sheet manufacturing apparatus using a rubber kneading equipment batch-off machine.

  Specifically, an unvulcanized rubber sheet extruded from an extruder of a rubber kneading equipment batch-off machine and stretched into a long sheet by a calender is transported to a festoon conveyor by a transport conveyor, and then a plurality of fes It is manufactured by being sufficiently cooled by hanging on a tune bar (cooling bar) and sequentially transporting, and then sending the cooled unvulcanized rubber sheet to the next process (Patent Documents 1 and 2).

  FIG. 5 is a view for explaining a cooling process in the above-described conventional rubber kneading equipment batch-off machine. In FIG. 5, 1 is a rubber kneading equipment batch-off machine, S is extruded from an extruder and is elongated by a calendar. 4 is a festoon conveyor for cooling the rubber sheet S, and 6 is a sheet pick-up device for picking up the cooled rubber sheet S. Reference numerals 3 and 8 denote rubber sheet conveying conveyors for conveying the rubber sheet S, which are operated in synchronization. In the festoon conveyor 4, a plurality of festoon bars 44 are arranged at close intervals so as to sufficiently cool the hanging rubber sheet S. Reference numeral 2 denotes a release agent dip conveyor for applying the release agent liquid splash 20 on the surface of the rubber sheet S so that the rubber sheet S and the festoon bar 44 do not stick to each other.

  The rubber sheet S extruded from the extruder and lengthened by the calendar is transported on the rubber sheet transport conveyor 3, and is fed to a festoon conveyor entrance provided between two adjacent festoon bars 44, 44. After being fed from the section 4a, the festoon conveyor 4 that rotates in the direction of the arrow is sequentially hung on a plurality of festoon bars 44 that are rotated and conveyed to a predetermined sheet pick-up position P. The rubber sheet S conveyed to a predetermined sheet pick-up position P is picked up by the sheet chuck portion 62 of the sheet pick-up device 6 that has entered between two adjacent festoon bars 44, 44, and then moves. It is carried to the rubber sheet transport conveyor 8 by the pick-up device 6 and then sent to the next process by the rubber sheet transport conveyor 8.

  However, as described above, the two adjacent festoon bars 44, 44 are arranged at a close interval in order to sufficiently cool the hanging rubber sheet S, so that the rubber sheet S is festooned. It is not easy to insert between the bars 44 and 44 or to allow the sheet chuck portion 62 to enter between the festoon bars 44 and 44.

  Therefore, conventionally, the interval between the festoon bars 44, 44 at the festoon conveyor inlet 4a is enlarged in advance, and when the rubber sheet S is loaded, the rotation of the festoon bar 44 is temporarily stopped to increase the interval. While the rubber sheet S is introduced from the spot where it has been removed, the sheet chuck portion 62 enters between the festoon bars 44 and 44 at the sheet pick-up position P in accordance with the stop of the rotation of the festoon bar 44. The rubber sheet S was chucked.

  Thus, conventionally, since the rotation of the festoon bar 44 is intermittently stopped based on the position of the festoon conveyor inlet 4a, the position of the sheet pick-up position P on the festoon conveyor 4 outlet side is driven accordingly. The sheet take-up device 6 is bolted in accordance with the determined position.

JP-A-8-155972 JP 2010-173223 A

  However, in the case of the above-described conventional method, the chain pitch accumulated error becomes large due to a difference in tension or an extension amount of the festoon conveyor 4 (chain conveyor). When the rotation of the festoon bar 44 is intermittently stopped based on the above, there is a problem that the stop positions of the festoon bars 44, 44 on the outlet side of the festoon conveyor 4 are different each time.

  For this reason, the pick-up position of the sheet pick-up device 6 and the stop position of the festoon bar cannot be accurately matched on the outlet side of the festoon conveyor 4. As a result, the center of the sheet chuck portion 62 of the sheet pick-up device 6 cannot be accurately lowered and intruded into the closely spaced gap between the adjacent festoon bars that are stopped, and the sheet is reliably picked up. In order to do this, it was necessary to use human hands.

  Therefore, in view of the above problems, the present invention provides a rubber sheet pick-up capable of reliably picking up the rubber sheet by accurately matching the pick-up position of the rubber sheet with the stop position of the festoon bar without manual intervention. It is an object to provide an apparatus and a rubber sheet manufacturing apparatus.

The first technique related to the present invention is:
A rubber sheet manufacturing apparatus comprising a festoon conveyor having a plurality of festoon bars and intermittently driving, and a rubber sheet pick-up device that picks up a rubber sheet hung on the festoon bars,
A position detection sensor for detecting a stop position of the festoon bar located at or near the rubber sheet pick-up position;
The rubber sheet manufacturing apparatus is configured to move the rubber sheet pick-up device based on the detection result of the position detection sensor and pick up the rubber sheet from the festoon bar.

And the 2nd technique regarding this invention is:
The festoon bar is attached to the festoon conveyor by a chain roller,
The rubber sheet manufacturing apparatus according to the first technique , wherein the position detection sensor detects a stop position of the festoon bar by detecting a stop position of the chain roller.

The third technique related to the present invention is as follows.
Used in the rubber sheet manufacturing apparatus described in the first technique or the second technique ,
A rubber sheet pick-up device configured to pick up the rubber sheet from the festoon bar based on a detection result by the position detection sensor.

The present invention has been obtained from the above findings, and the invention according to claim 1
A rubber sheet manufacturing apparatus comprising a festoon conveyor having a plurality of festoon bars and intermittently driving, and a rubber sheet pick-up device that picks up a rubber sheet hung on the festoon bars,
A position detection sensor for detecting a stop position of the festoon bar located at or near the rubber sheet pick-up position;
Based on the detection result by the position detection sensor, the rubber sheet pick-up device is moved to take up the rubber sheet from the festoon bar,
Furthermore, the festoon bar is attached to the festoon conveyor by a chain roller,
The position detection sensor detects the stop position of the festoon bar by detecting the stop position of the chain roller.
This is a rubber sheet manufacturing apparatus.

And the invention of Claim 2 is
Used in the rubber sheet manufacturing apparatus according to claim 1,
Based on the detection result by the position detection sensor, the rubber sheet is configured to be picked up from the festoon bar.
This is a rubber sheet pick-up device.

  ADVANTAGE OF THE INVENTION According to this invention, the rubber sheet pick-up apparatus and rubber sheet manufacturing apparatus which can make a rubber sheet pick up reliably by matching the pick-up position of a rubber sheet and the stop position of a festoon bar with high precision, without manual intervention. Can be provided.

It is a schematic front view for demonstrating the rubber sheet manufacturing apparatus which concerns on one embodiment of this invention. It is a principal part top view of the rubber sheet manufacturing apparatus which concerns on one embodiment of this invention. It is a principal part front view of the rubber sheet manufacturing apparatus which concerns on one embodiment of this invention. 1 is an enlarged front view of a rubber sheet picking device according to an embodiment of the present invention. It is a schematic front view for demonstrating the conventional rubber sheet manufacturing apparatus.

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

1. Embodiment FIG. 1 is a schematic front view for explaining a rubber sheet manufacturing apparatus according to the present embodiment. FIG. 2 is a plan view of the main part, and FIG. 3 is a front view of the main part.

(1) Overall configuration of rubber sheet manufacturing apparatus The rubber kneading equipment batch-off machine 1 according to the present embodiment hangs a long rubber sheet S on the festoon bar 44 in the same manner as a conventional rubber kneading equipment batch-off machine. Therefore, the conventional rubber kneading equipment batch-off machine includes a position detection sensor 9 and a control device (not shown).

  As shown in FIG. 1, the rubber kneading equipment batch-off machine 1 roughly moves a release agent dip conveyor 2, a festoon conveyor 4 indicated by a two-dot chain line, a sheet pick-up device 6, and a sheet pick-up device 6 in the horizontal direction. The electric cylinder 7 with an encoder for carrying out, the rubber sheet conveyance conveyors 3 and 8 which convey the rubber sheet S, the position detection sensor 9, and the control apparatus which is not shown in figure are provided.

(2) Festoon conveyor The festoon conveyor 4 has a so-called bar conveyor structure, and includes a plurality of festoon bars 44, a chain intermittent drive sprocket 46, and an input positioning sprocket 47.

  The festoon conveyor 4 has two festoon bars 44, 44 adjacent to each other at the festoon conveyor inlet 4a so that the rubber sheet S fed from the calendar (not shown) and conveyed by the rubber sheet conveyor 3 can be easily fed. The interval of has been enlarged.

  As shown in FIG. 2, the festoon conveyor 4 includes two endless conveyor chains 40 and 42 that move synchronously in the left-right direction, and is configured by connecting a plurality of chain rollers 41 and 43 in a chain shape. Circulate clockwise in the vertical plane. In addition, festoon bars 44 are arranged in the two conveyor chains 40 and 42 at regular intervals.

  As shown in FIG. 3, the two conveyor chains 40 and 42 move while being guided by guide rails 50 and 52 arranged along the peripheral circuit of the two conveyor chains 40 and 42.

(3) Rubber sheet pick-up device FIG. 4 shows an enlarged front view of the rubber sheet pick-up device according to the present embodiment.

  As shown in FIG. 4, the sheet pick-up device 6 is disposed above a frame body 70 provided on the downstream side of the rubber kneading equipment batch-off machine 1. As described above, the sheet pick-up device 6 is a device that picks up the front end portion of the rubber sheet hung on the festoon bar 44.

  The sheet pick-up device 6 includes a main body 60, a sheet chuck portion 62, a first actuator 66 for raising and lowering the sheet chuck portion 62 in the vertical direction, and a second actuator for moving the main body 60 forward and backward in the horizontal direction. And an actuator 68.

(A) Main Body and Sheet Chuck Unit The first actuator 66 is fixed to the main body 60 with the drive shaft 64a in the vertical direction. A sheet chuck 62 is fixed to the tip of the drive shaft 64 a of the first actuator 66, and is translated in the horizontal direction along the upper surface of the frame body 70 by the second actuator 68.

(B) Electric cylinder with encoder Further, an electric cylinder 7 with encoder for moving the sheet pick-up device 6 in the horizontal direction is fixed to the frame 70. The electric cylinder 7 with an encoder is connected to the second actuator 68 of the sheet pick-up device 6 via a slider 67 that can move in parallel with the horizontal direction on the frame 70, and the drive shaft 7a of the electric cylinder 7 with an encoder. Is driven, the main body 60 of the sheet pick-up device 6 is translated in the horizontal direction, and positioning adjustment of the sheet chuck portion 62 is performed.

(C) Position Detection Sensor The position detection sensor 9 is disposed at the sheet pickup position P on the downstream side of the festoon conveyor 4. The position detection sensor 9 includes seven position detection sensor elements 9a arranged in a block in a row (see FIG. 2), and a support arm 54 (see FIG. 3) fixed to the guide rail 50 (see FIG. 3). ) To detect the position of the chain roller 41 of the conveyor chain 40.

  As shown in FIG. 4, the position detection sensor 9 is intermittently stopped when the tip of the rubber sheet S placed on the festoon bar 44 reaches the festoon bar 44 one pitch before the sheet pick-up position P. The sheet pick-up position P of the sheet chuck portion 62 and the intermittent stop position of the intermittently stopped festoon bar 44 are arranged so as to detect a difference in distance.

  Here, in order to further improve the detection accuracy of the position detection sensor 9, the festoon bar 44 is not directly detected, but the chain roller of the conveyor chain 40 to which the festoon bar 44 is attached as described above. It is preferable to detect 41 stop positions (see FIG. 3). By detecting the stop position of the chain roller 41, the intermittent stop position of the festoon bar 44 one pitch before the sheet pick-up position P can be known.

  That is, when the position detection sensor 9 directly detects the festoon bar 44, the solid content of the release agent liquid splashed at the festoon conveyor inlet 4a adheres to the outer peripheral surface of the festoon bar 44, Since the diameter of the festoon bar 44 gradually increases, there may be a problem in the accuracy of the detection position.

  On the other hand, when the chain roller 41 is detected instead of the festoon bar 44, the chain roller 41 is pitched even if the solid content of the splashed release agent liquid adheres to the outer peripheral surface of the chain roller 41. By rotating forward, it rotates on the guide rail 50, and the solid content of the release agent liquid is peeled by contact with the guide rail 50. For this reason, the diameter of the chain roller 41 does not enlarge, and the detection accuracy is excellent.

(D) Rubber sheet pick-up by the sheet pick-up device Information from the position detection sensor 9 is sent to a control device (not shown), and the control device drives the drive shaft 7a of the electric cylinder 7 with encoder based on the information. Then, the main body 60 of the sheet pick-up device 6 is moved horizontally, and the pick-up position of the sheet chuck portion 62 is made to coincide with the sheet pick-up position P after one pitch of the festoon bar 44 stopped intermittently.

  Next, when the festoon bar 44 moves forward by 1 pitch and the festoon bar 44 on which the leading end portion of the rubber sheet S is placed comes to the sheet pick-up position P and stops intermittently, the first actuator 66 is driven, The sheet chuck portion 62 is lowered to enter between the festoon bars 44, 44. Then, after the sheet chuck portion 62 chucks the leading end portion of the rubber sheet S, the sheet chuck portion 62 is raised by driving the first actuator 66 to take out the leading end portion of the rubber sheet S from the festoon bar 44.

  Next, by driving the second actuator 68 to advance the sheet chuck portion 62, the tip end portion of the rubber sheet S is transferred onto the rubber sheet conveying conveyor 8 that conveys the rubber sheet S to the next process. Thereafter, the rubber sheet S placed on the rubber sheet transport conveyor 8 is transported to the next process.

2. Advantages of the present embodiment (1) According to the present embodiment, it is possible to eliminate a conveyor pitch accumulated error caused by a difference in conveyor tension or a difference in the amount of conveyor elongation, so that the rubber sheet is surely taken up. Can do.

(2) Further, since the rubber sheet can be reliably taken up without human intervention, labor saving and labor saving can be achieved, and highly reliable and safe driving can be performed.

  While the present invention has been described based on the embodiments, the present invention is not limited to the above embodiments. Various modifications can be made to the above-described embodiments within the same and equivalent scope as the present invention.

DESCRIPTION OF SYMBOLS 1 Rubber kneading equipment batch-off machine 2 Release agent dip conveyor 3, 8 Rubber sheet conveyance conveyor 4 Festoon conveyor 4a Festoon conveyor inlet part 6 Sheet pick-up device 7 Electric cylinder 7a, 64a with an encoder 9 Position detection sensor 9a Position Detection sensor element 20 Splash of release agent liquid 40, 42 Conveyor chain 41, 43 Chain roller 44 Festoon bar 46 Chain intermittent drive sprocket 47 Loading positioning sprocket 50, 52 Guide rail 54 Support arm 60 Main body 62 Sheet chuck portion 66 First Actuator 67 Slider 68 Second actuator 70 Frame P Sheet pick-up position S Rubber sheet

Claims (2)

A rubber sheet manufacturing apparatus comprising a festoon conveyor having a plurality of festoon bars and intermittently driving, and a rubber sheet pick-up device that picks up a rubber sheet hung on the festoon bars,
A position detection sensor for detecting a stop position of the festoon bar located at or near the rubber sheet pick-up position;
Based on the detection result by the position detection sensor, the rubber sheet pick-up device is moved to take up the rubber sheet from the festoon bar ,
Furthermore, the festoon bar is attached to the festoon conveyor by a chain roller,
The rubber sheet manufacturing apparatus , wherein the position detection sensor detects a stop position of the festoon bar by detecting a stop position of the chain roller . Used in the rubber sheet manufacturing apparatus according to claim 1 ,
A rubber sheet picking device configured to pick up the rubber sheet from the festoon bar based on a detection result of the position detection sensor.

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