JP2007331863A - Winding device for rubber-like sheet - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent generation of a waste material by completely using a liner of a roll body. <P>SOLUTION: A feeding means 3 for feeding the liner L is provided on a surface of the rubber-like sheet S continuously conveyed by a conveying means 2. The feeding means 3 is provided with a guide means 8 for guiding the liner L1 from the first roll body LR1 and the liner L2 from the second roll body LR2 to a feeding position P1 via joining means 7; a detection means 9 for detecting finishing of unwinding of the first and second roll bodies LR2; a retaining means 10 for allowing the liner Lb from the other roll body LRb to wait at a position of the joining means 7 during unwinding of one roll body LRa; and a liner joining means 7 for connecting the waiting other liner Lb to one liner La. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a rubber sheet take-up device for winding a belt-like unvulcanized rubber sheet on a peeling liner.

  In general, unvulcanized rubber-like sheets for tire construction such as inner liner rubber, sidewall rubber, carcass ply, breaker ply, etc., used in the manufacture of tires are once wound up into a roll as a winder, for example, raw Transport to the next process such as a tire molding process, input, and the like are performed. At this time, the rubber-like sheets are wound in a state in which a peeling liner such as a polyethylene film is stacked on the surface so that the rubber-like sheets do not stick to each other.

  On the other hand, the thing of FIG. 7 is known as a winding apparatus of the said rubber-like sheet | seat. The symbol a in the figure is a conveying means using a guide roller, a conveyor or the like, and continuously conveys the rubbery sheet S. The conveyed rubbery sheet S has a peeling liner L on its surface. After being supplied, it is wound into a roll by the winding means b. Symbol c is a liner supply means, and a plurality of roll bodies LR of the liner L are held so as to be rewound.

  When the supply of the liner L occurs during winding of the rubber sheet S, the small-diameter winding body SR in the middle of winding is prevented from being processed as a defective product because it interferes with the next process. Therefore, in order to prevent the occurrence of such defective products, conventionally, when the remaining amount of the liner L is less than the length necessary to form one winding body SR, a rubber-like Prior to the start of winding the sheet S, it was necessary to replace it with a new roll body LR. For this reason, workability is reduced, for example, the replacement frequency of the roll body LR is increased. In addition, due to the replaced old roll body LR, a considerable amount of waste material of the liner L is generated. This waste material is collected and reprocessed to a new liner L. However, since much labor and cost are required, it is strongly desired to use up the liner L in each roll body LR.

  The present invention sequentially joins the front end of a liner unwound from the other roll body to the rear end of the liner unwound from one roll body during winding of the rubber-like sheet. The purpose is to provide a rubber sheet take-up device that can use up all the liner, prevent the generation of waste materials, can efficiently form a wound body, and can achieve cost reduction and resource saving. .

JP 2001-302035 A

In order to achieve the object, the invention of claim 1 of the present application
Winding of a rubber-like sheet that forms a winding body by winding a belt-like unvulcanized rubber-like sheet continuously conveyed on the liner that is rewound from a liner roll body made of a synthetic resin film. A device,
Conveying means for continuously conveying the rubber-like sheet, liner supply means for supplying the liner from the roll body at the supply position on the surface of the rubber-like sheet to be conveyed, and overlapping the rubber-like sheet on the liner A winding means for winding,
The liner supply means includes a roll stand that holds at least two roll bodies of the first roll body and the second roll body so as to be rewound.
Liner guiding means for guiding the first liner rewound from the first roll body and the second liner rewound from the second roll body to the supply position through the liner joining means;
Detection means for detecting the end of rewinding of the first and second liners from the first and second roll bodies;
Holding means for waiting the rewinding liner of the other roll body at the position of the liner joining means during rewinding of one roll body;
According to the present invention, the detection means for detecting the end of the rewinding of the one roll body includes liner joining means for connecting the other liner waiting to the one liner.

  In the invention of claim 2, the synthetic resin film is a polyethylene film.

  According to a third aspect of the present invention, the liner joining means is capable of moving up and down so that the other liner is pressed against the one liner and thermally welded between the lower thermal plate and the lower thermal plate. It is characterized by comprising a hot plate.

  Since the present invention is configured as described above, during the winding of the rubber-like sheet, the liner rewinded from one roll body can be sequentially joined to the liner rewinded from the other roll body, etc. The liner in each roll body can be used up. Therefore, it is possible to reduce the number of times the roll body is replaced, and to improve the winding work efficiency. Moreover, since the generation of waste materials can be prevented, the labor and cost for reprocessing the waste materials can be eliminated, which can greatly contribute to cost reduction and resource saving.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a side view showing an embodiment of a rubber sheet winding device according to the present invention, FIG. 2 is a side view showing the main part of the liner supply means, and FIG. 3 is a side view showing the main part of the holding means. 4 is a side view showing the main part of the liner joining means.

  As shown in FIG. 1, a rubber-like sheet winding device 1 (hereinafter referred to as a winding device 1) of the present embodiment is a belt-like unvulcanized rubber-like sheet S that is continuously conveyed. An apparatus for forming a wound body SR by being wound around the liner L that is rewound from the roll body LR, and a conveying means 2 that continuously conveys the rubber-like sheet S; On the surface of the sheet S, there are provided liner supply means 3 for supplying the liner L from the roll body LR at a supply position P1, and winding means 4 for winding the rubber-like sheet S on the liner L.

  In this example, the rubber-like sheet S is assumed to be an unvulcanized tire constituting member such as an inner liner rubber, a sidewall rubber, a carcass ply, or a breaker ply formed by a rubber extruder or a calender device. However, it is not restricted to these, and rubbery sheets for various uses other than for tire construction can be employed.

  The liner L is a release sheet made of a synthetic resin film that is interposed between the rubber sheets S and S to prevent mutual adhesion, and is preferably a polyethylene film that has high peelability and is easily heat-welded. Is done. The roll body LR is formed by winding the liner L around a core material.

  Next, the conveying means 2 is composed of a belt conveyor and a fitting roller in this example, and conveys the rubber-like sheet S formed by the rubber extruder or the like to the winding means 4. In the conveying means 2, in order to press and adhere the liner L to the surface of the rubber-like sheet S, it is preferable to employ a belt conveyor at the supply position P1. The winding means 4 rotates the core material to wind the rubber sheet S sent from the conveying means 2 together with the liner L to form a wound body SR.

Next, as shown in FIG.
(1) a roll stand 6 that holds at least two roll bodies LR of the first roll body LR1 and the second roll body LR2 so as to be rewound;
(2) The first liner L1 that is rewound from the first roll body LR1 and the second liner L2 that is rewound from the second roll body LR2 are connected to the supply position P1 through the liner joining means 7. Liner guide means 8 for guiding to
(3) detection means 9 for detecting the end of rewinding of the first and second liners L1, L2 from the first and second roll bodies LR1, LR2, and
(4) During rewinding of one roll body LRa (for example, first roll body LR1), the rewinding liner Lb of the other roll body LRb (for example, second roll body LR2) is positioned at the position of the liner joining means 7 Holding means 10 to stand by,
(5) Provided with a liner joining means 7 for connecting the other liner Lb waiting to the one liner La by a detection output for detecting the end of the rewinding of the one roll body LRa by the detecting means 9. .

  The roll stand 6 has a well-known structure that pivotally supports a plurality of roll bodies LR so as to be rewound. In this example, the case where the first and second roll bodies LR1 and LR2 are held is illustrated.

  The liner guide means 8 is composed of a plurality of guide rollers 11 including a rewinding roller 11A, and the liner L is pulled out from the roll body LR to the supply position P1 by the rotation of the rewinding roller 11A driven by a motor. invite. In this example, as shown in FIG. 2, the liner guide means 8 includes a first guide portion 12 for guiding the first liner L1 from the first roll body LR1 to the liner joining means 7, and the second guide A second guide 13 for guiding the first liner L2 from the roll body LR2 to the liner joining means 7, and a common guide for guiding the first and second liners L1, L2 from the liner joining means 7 to the supply position P1. Part 14.

  The guide roller 11a1 located on the most downstream side among the guide rollers 11a constituting the first guide portion 12 and the guide roller 11b1 located on the most downstream side among the guide rollers 11b constituting the second guide portion 13 are: Each of the guide rollers 11b1 is provided at a higher position than the guide rollers 11a1.

  As shown in FIG. 1, the common guide portion 14 includes a guide roller 11c1 on the most upstream side of the guide roller 11c forming the common guide portion 14 and disposed at the outlet portion of the liner joining means 7, and the supply position. A festoon 15 capable of securing the joining time by the liner joining means 7 by temporarily storing the liner L is arranged between the most downstream guide roller 11c2 arranged in P1. The festoon 15 includes a plurality of guide rollers 11c3 pivotally attached to an upper fixed frame and a plurality of guide rollers 11c4 pivotally attached to a lower movable frame that can be moved up and down. The liner between the guide rollers 11c3 and 11c4 is provided. Guide L to the zigzag. The storage amount of the liner L is detected by the sensor 15A. For example, when the moving frame exceeds the sensor 15A, the storage amount is warned or the winding operation is stopped.

  The most upstream guide roller 11c1 of the common guide portion 14 is disposed at substantially the same height as the most downstream guide roller 11a1 of the first guide portion 12, and the most upstream guide roller 11c1. And the festoon 15 are provided with the rewinding roller 11A. A stop roller 17 that stops the liner L by pressing the liner L and applying a brake is attached to the rod end of the cylinder 16 so as to be able to advance and retract at a position facing the rewinding roller 11A.

  Further, as shown in FIG. 2, the detecting means 9 is arranged in the first guide portion 12, and detects the rear end portion of the first liner L1 from the first roll body LR1, thereby the first liner. By detecting the rear end portion of the first liner L2 from the second roll body LR2, the first sensor 9A that detects the end of rewinding of L1 and the second guide portion 13, And a second sensor 9B that detects the end of rewinding of the second liner L2.

  In this example, the case where the first and second sensors 9A and 9B are configured by upstream sensors 9A1 and 9B1 and downstream sensors 9A2 and 9B2, respectively, is illustrated. When the upstream side sensors 9A1 and 9B1 detect the rear end of one liner La, the rewinding roller 11A decelerates and preparations for stop are made. Thereafter, the downstream sensors 9A2 and 9B2 detect the rear end portion of the one liner La, so that the cylinder 16 extends, and the liner La is stopped by pressing the stop roller 17, and the liner joining means 7 is activated.

  The holding means 10 is a means for holding the front end portion of the liner Lb unwound from the other roll body LRb at the position of the liner joining means 7 and waiting, while the one roll body LRa is rewound. In (A), during the rewinding of the first roll body LR1, the front end portion of the second liner L2 unwound from the second roll body LR2 stands by at the position of the liner joining means 7, and FIG. (B) shows a case where the front end portion of the first liner L1 unwound from the first roll body LR1 stands by at the position of the liner joining means 7 during the rewinding of the second roll body LR2. ing.

  In this example, the holding means 10 includes a holding plate portion 20 that rises at the position of the liner joining means 7, and in the case of FIG. 3A, the front end portion of the second liner L2 is the holding plate portion 20; The second guide portion 13 is held across the most downstream guide roller 11b1. In the case of FIG. 3B, the front end portion of the first liner L1 is held between the holding plate portion 20 and the guide roller 11a1 on the most downstream side of the first guide portion 12. Therefore, in this example, the holding means 10 includes the holding plate portion 20 and the most downstream guide rollers 11a1 and 11b1. Further, the holding means 10 is provided with the other liner Lb held on the most downstream side in order to prevent the held other liner Lb from being pulled back to the roll body LRb and detached from the holding means 10. A stopper 21 (shown in FIG. 2) that presses against 11a1 and 11b1 to stabilize the holding is provided.

  Next, as shown in FIG. 4, the liner joining means 7 is supported by a lower heating plate 22 </ b> L with a built-in heater fixed on the lower side of the liner L, and movable up and down on the upper side of the liner L. A heating plate 22U having a built-in heater is provided, and during this time, the front end of the other liner Lb waiting and the one liner La are pressed and heat-welded. The lower hot plate 22L is attached to the fixed plate F, and the upper hot plate 22U is attached to the lower end of the rod of the cylinder 23. The holding plate portion 20 is erected on the fixed plate F on the downstream side of the lower heat plate 22L.

  Here, each width W of the heating surface 22s in the upper and lower hot plates 22U and 22L is preferably in the range of 10 to 20 mm, and if it is less than 10 mm, the joining force is weak, and if it exceeds 20 mm, wrinkles are generated in the joint. It is easy to do, and the surface property of the rubber-like sheet S falls. The surface temperature of the heating surface 22s is preferably in the range of 107 to 110 ° C. when the liner L is a polyethylene film, and the pressing time is preferably in the range of 3.5 to 6.0 seconds. If the surface temperature and the pressure welding time are out of the above ranges, it becomes easy to join due to over-melting or under-melting.

Next, the operation of the winding device 1 will be described with reference to FIGS.
In FIG. 5A, the first liner L1 is sequentially rewound from the first roll body LR1 and supplied to the rubber sheet S. In the rewind state of the first roll body LR1, the replacement second roll body LR2 is set in the winding device 1. Specifically, the second roll body LR2 is mounted on the roll stand 6, and the second liner L2 from the second roll body LR2 is manually guided to the second guide portion 13 and the tip portion thereof. Is stretched between the most downstream side counter roller 11b and the holding plate portion 20 to stand by.

  Further, as shown in FIG. 5B, when the rewinding of the first roll body LR1 is completed and the first upstream sensor 9A1 detects the rear end of the first liner L1, the rewinding roller 11A is Slow down. Thereafter, when the first downstream sensor 9A2 detects the rear end of the first liner L1, the stop roller 17 is lowered and the first liner L1 is stopped by the pressing, and the liner joining means 7 is activated. . In the liner joining means 7, the upper hot plate 22U is lowered, and the rear end portion of the stopped first liner L1 and the second liner L2 that has been put on standby in advance with the lower hot plate 22L. The front end is pressed and heat welded. During this time, since the first liner L1 stored in the festoon 15 is supplied to the rubber-like sheet S, the winding operation of the rubber-like sheet by the winding means 4 is continued.

  After heat welding, as shown in FIG. 6A, the upper hot plate 22U and the stop roller 17 are raised. At this time, in this example, in order to cool the heat-welded portion Q that has reached a high temperature, the heat-welded portion Q is drawn out and cooled on the most upstream guide roller 11c1. The guide roller 11c1 is made of a metal material having good heat conductivity such as aluminum, which has a heat conductivity as high as about three times that of iron.

  Thereafter, the rewinding roller 11A is driven, and the rewinding of the liner L2 from the second roll body LR2 is started. In this state, as shown in FIG. 6B, the replacement first roll body LR1 is set on the roll stand 6, and the first liner L1 from the first roll body LR1 is manually moved to the first position. The first guide portion 12 is guided, and the front end portion of the guide portion 12 is bridged between the most downstream counter roller 11a and the holding plate portion 20 to be on standby.

  Thus, the winding device 1 of the present invention has a front end of the liner Lb from the other roll body LRb at the rear end portion of the liner La unwound from the one roll body LRa during winding of the rubber-like sheet. The portions can be sequentially joined, and the liner L in each roll body LR can be used up. Therefore, it is possible to reduce the number of times the roll body LR is replaced, and to improve the winding work efficiency. Moreover, since the generation of waste materials is eliminated, the labor and cost for reprocessing waste materials can be eliminated, which can greatly contribute to cost reduction and resource saving.

  As mentioned above, although especially preferable embodiment of this invention was explained in full detail, this invention is not limited to embodiment of illustration, It can deform | transform and implement in a various aspect.

It is a side view which shows one Example of the winding apparatus of the rubber-like sheet | seat of this invention. It is a side view which shows the principal part of a liner supply means. (A), (B) is a side view which shows the principal part of a holding means. It is a side view which shows the principal part of a liner joining means. (A), (B) is drawing explaining operation | movement of a winding apparatus. (A), (B) is drawing which further demonstrates operation | movement of a winding apparatus. It is a side view which shows an example of the conventional winding apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Rubber | gum sheet winding device 2 Conveying means 3 Liner supply means 4 Winding means 6 Roll stand 7 Liner joining means 8 Liner guide means 9 Detection means 10 Holding means 22L Heat plate L on lower heat plate 22U Liner L1 No. 1 1 liner L2 2nd liner LR roll body LR1 1st roll body LR2 2nd roll body P1 supply position S rubber-like sheet SR winding body

Claims (3)

Winding of a rubber-like sheet that forms a winding body by winding a belt-like unvulcanized rubber-like sheet continuously conveyed on the liner that is rewound from a liner roll body made of a synthetic resin film. A device,
Conveying means for continuously conveying the rubber-like sheet, liner supply means for supplying the liner from the roll body at the supply position on the surface of the rubber-like sheet to be conveyed, and overlapping the rubber-like sheet on the liner A winding means for winding,
The liner supply means includes a roll stand that holds at least two roll bodies of the first roll body and the second roll body so as to be rewound.
Liner guiding means for guiding the first liner rewound from the first roll body and the second liner rewound from the second roll body to the supply position through the liner joining means;
Detection means for detecting the end of rewinding of the first and second liners from the first and second roll bodies;
Holding means for waiting the rewinding liner of the other roll body at the position of the liner joining means during rewinding of one roll body;
A rubber-like sheet comprising: a liner joining means for connecting the other liner waiting to the one liner by a detection output for detecting the end of rewinding of the one roll body by the detecting means. Winding device.   2. The rubber sheet winding apparatus according to claim 1, wherein the synthetic resin film is a polyethylene film.   The liner joining means includes a lower heat plate and an upper heat plate that can be moved up and down to thermally weld the other liner to the one liner between the lower heat plate and the lower heat plate. The rubber sheet winding device according to claim 1 or 2, characterized in that:

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