JPS6054841A - Application device of tire former - Google Patents

Abstract

PURPOSE:To simplify the application work of application sheet for forming tire by a method wherein the conventional mechanism to synchronize the peripheral speed of a tire forming drum with the delivery speed of a feeding device of application sheet for forming tire is eliminated. CONSTITUTION:Application sheet-like material 3 for forming tire is attracted by an operator to the magnet 17 of a first holding mechanism 19 and at the same time the side end face at the tip of the material 3 is made abutted against a guide roller 10. With the material 3 is held in the position as mentioned above, the position of the sheet 3 in the direction of width is adjusted in a predetermined place with respect to a drum 35. Next, said device is brought close to the tire-forming drum 35, on which a rubber band 17 is attached. After that, a second holding mechanism 27 is released from the magnet 17 of the first holding mechanism 19, resulting in allowing to press the sheet-like material 3 onto the drum 35 only with the weight of the second holding mechanism 27 itself. When the drum is driven and rotated, the sheet-like material 3 is pulled by the drum with a constant tension and uniformly pressed and applied onto the drum 35 by a roller 23. A formed tire is manufactured when the sheet-like material 3 is cut apart after one complete turn of the drum 35.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for applying sheet material to a tire building drum of a tire building machine.

When pasting sheet material, which is a tire constituent material, onto a tire forming drum of a tire forming machine, conventionally, the sheet material is transferred from a feeding device to the tire forming drum using a magneso 1-conhair, and the circumferential speed of the forming drum and the feeding device are The sheet-like material was applied to the forming drum by synchronizing the feed speed of the sheet material.

However, such a conventional method requires a tuning device to synchronize the circumferential speed of the forming drum and the delivery speed of the feeding device, resulting in an increase in equipment costs.

Furthermore, if the peripheral speed of the forming drum and the feeding speed of the feeding device are out of synchronization, the sheet material will expand and contract, making it impossible to maintain a constant quality of the product, which requires constant adjustment of the synchronizing device, which is difficult. There were also some problems.

The present invention was made by focusing on these conventional problems, and provides a non-synchronized automatic pasting device that has a simple structure and is inexpensive to install, and also provides a tire molding device. The purpose is to improve the accuracy of pasting the sheet-like material onto the drum, and its features include a positioning means for positioning the sheet-like material in the width direction; a first support mechanism comprising adjusting means for adjusting the position in the width direction of the sheet, and holding means for holding the sheet-like material; and a peeling mechanism for peeling off the sheet-like material held by the holding means from the holding means. a second support mechanism having pressing means for pressing the sheet material onto the tire building tram; and moving the first and second support mechanisms toward and away from the tire building ram. a moving mechanism, and the first support j, J mechanism is driven by the moving mechanism and integrated with the second support mechanism.
When it moves from the position to the second position, it stops and moves to the second position.
Each time the supporting machine is moved from the second position to the third position, the sheet-like material is pulled from the / Jl Equipped with a movement control means - ζ Color Tie - 1 - Molding machine's pasting device.

Hereinafter, this invention will be explained based on the drawings.
The figure is a schematic perspective view of one embodiment of the invention. First, the structure will be explained. Reference numeral 1 denotes a fixed fly 19 fixed to the leading end in the feeding direction of the sheet I-shaped material 3 of a known conveyor-type sheet material supplying device 2. Magnet frames 4a and 4b are provided at both ends of the fixed frame 1. These magnetic frames 4a, 4b have pins 5a
, 5b, and is rotatably attached to the fixed frame 1 by links 6a and 6b, which are rotatably connected to the fixed frame 1 by means of links 6a and 6b. Reference numerals 7a and 7b designate a pair of guide shafts extending in the width direction of the sheet 1-shaped material 30, which are parallel to each other between the tip ends of the magnet frames 4a and 4b. A slide block 8 is slidably provided on both guide shafts 7a, 7b and is movable along the guide shafts 7a, 7b.

A vertical guide roller 10 is attached to the slide block 8 via a bracket 9 as a means for positioning the sheet material 3 in the width direction.

1] is located between both guide shafts lla and 7b, and is screwed into a screw hole 12 provided in one of the magnet frames 4b and a screw hole 13 provided in the slide block 8. It is a threaded rod extending parallel to the shafts t-7a, 7b. Magnet frame 4 of this threaded rod 11
A handle 14 is provided at the end projecting outwardly of b, and by turning this handle 14, the slide block 8 is slid along the guide shafts 7a, 7b, and the sheet-like material 3 The position can be changed arbitrarily in the width direction. The guide shafts 7a, 7b, the slicing block 8, the threading rod 11, and the handle 14 are combined to constitute a position turning means 15 of the guide roller 10, which is a means for positioning the saw 1-shaped material 3. 1 in Figure F), which has been omitted to make the diagram clearer.
, located below the front 5 side shafts 7a and 7b.
Play 1-16 between d-macnet frames 4a and 4b
As shown in Figure 2, the racks are laid out. As shown in FIG.
This magnet 17 is fixed as a holding means for sucking and holding the. In addition, this magnet 17 base I.
When the shaped material 3 does not contain a magnetic material as a constituent member,
As shown in FIG. 4G, it may be replaced with a vacuum source 18 connected to a vacuum source (not shown). Magne throat frame 4a, 4b, pin 5'a%
5b-links 6a, 6b, guide roller 10, position adjustment means 15, plate 16, and magnetic groove 7 may be combined to constitute a first support mechanism 19 for sheet-like material 3.

Returning to FIG. 1, the magneto-nod frames 4a, 4b
Elongated holes 20a and 20b, which are included in the first support mechanism 19 and serve as movement control means for defining the movement' (swing) range of the first support mechanism 19, are provided at the rear end, respectively. The elongated holes 20a and 20b have an arc shape centered on the pins 5a and 5b (J3), and the pins 21a and 21b fixed to the fixed frame 1 are movably fitted therein.222.22b is connected to the fixed frame 1 by pins 5a and 5b, and the magneto frame 1.4a
, 4b from below and support them, the pins 58
It is a crimp frame that can swing around %5b as a fulcrum.

There is a seam 1 between the tips of both crimp frames 22a and 22b.
A roller 23 serving as a pressing means for press-applying the ~-shaped material 3 to the tie molding 1-ram (to be described later) is spanned so as to be rotatable around an axis, and one pressure frame 22a has a roller 23 projecting from three sides. The arm that did it! 'ji 24 is provided.

Further, as shown in FIG. 2, a plate 25 serving as a peeling means for the sheet-like material 3 is placed between the two crimping frames 22 a and 22 b at a position rearward of the roller 23 . A hole 26 into which the magnet 17 can be inserted is provided. The compression frames 22a, 22b, rollers 23, and plate 5 together constitute a second support mechanism 27 for the sheet material 3.

+M Returning to FIG. 1, 28 is swingably connected to the rear end 81 of the portion 1a of the fixed frame 1 extending toward the supply device 2 side by a pin 29, This is an air cylinder that operates by receiving pressurized air from a source. A tip fitting 30 is fixed to the tip of the piston U rod 28a of the air cylinder 2B, and the tip fitting 30 has a long hole 31 extending in the axial direction of the piston rod 28a.
I'm here.

A pin 32 (fixed to the tip of the arm portion 24 of the crimp frame 22a) is movably fitted into the elongated hole 31. As a result, the screw I of the core cylinder 28
- The second support mechanism 27 is moved in response to the movement of the rotor 28a
The first support mechanism 19, which is supported from below by the second support mechanism 27, also swings around the pins 5a, 5'b as fulcrums, and the first support mechanism 19 also swings around the pins 5a, 5b as fulcrums. 20b. The air cylinder 28, the end fitting 30, the pin 29
．． 32 is the combination of the first and second support mechanisms 19.27
It constitutes a moving mechanism 33 that moves (swings) the. The fixed frame 1, the first support mechanism 19, ff1
2. The supporting mechanism 27 and the moving mechanism 33 are combined together to constitute the entire "(Tie-1/forming machine pasting (=J device 34)" (
There is.

Next, the operation of the pasting device 34 having the above structure will be explained based on FIGS. 5a to 5c.

In the figure, 35 is a tire molding drum of a tire molding machine.

A magnet (or vacuum cup) 3G is embedded in the outer peripheral surface 35a of this drum 35, and the outer peripheral portion is covered with a rubber band 37. When the applicator 34 is not in operation, it is retracted together with the supply device 2 to a reference position away from the drum 35, that is, the position shown in phantom in FIG. 5a.

When it is stationary at this reference position, the piston rods 28a and 28a of the air cylinders of the moving mechanism 33 are moved back and
The first support mechanism 19 and the second support mechanism 4AW27 are connected to the pin 5
It is in an elevated position rotated clockwise in the figure with a and 5b as the center. The sheet 1 and the web-like material 3 whose tips have been trimmed in advance are sent to the pasting device 34 while being adjusted in position by a position adjustment device (not shown) of the supply device 2. An operator attracts this sheet-like material 3 to the magnet 17 of the first support mechanism 19 and brings the side end surface of the leading end into contact with the guide roller 10 to position the sheet material 3 in a predetermined position relative to the drum 35 in the width direction. H'N II at the position. During this adjustment work, the first support mechanism 19 and the second support mechanism 27 are in a raised state, so the work can be easily performed. Note that, prior to this position adjustment work of the sheet material 3, the position of the guide roller 10 is adjusted in advance by the position adjustment means 15 so that the sheet material 3 can be adjusted to a predetermined widthwise position. When the adjustment work of the widthwise position of the sheet material 3 is completed, the pasting device 34 is integrated with the feeding device 2 into the first position shown by the solid line in FIG.
Position, i.e. t3I, approximately 100 degrees above the ram outer peripheral surface 35a
The sheet-like material 3 is moved forward to a distance i mm, while being held at a predetermined position in the width direction, and then stopped. Next, the piston rod 28a of the air cylinder 28 of the moving mechanism 33 moves forward, causing the second support mechanism 27 to swing counterclockwise in the figure using the pins 5a and 5b as fulcrums.
The first support mechanism 19 supported by the second support mechanism 27 also swings counterclockwise around the pins 5a and 5b as fulcrums. With this swing, the pins 21a and 21b fitted into the arcuate long holes 20a and 20b of the first support mechanism 19 move from one end of the long holes 20a and 20b toward the other end.

Then, when the first support mechanism 19 and the second support mechanism 27 swing close to the tram 35 to the second position shown in FIG. b is an arcuate long hole 20'
A, the other end of 20b is reached, and the first support mechanism 19 can no longer swing and stops. However, the second support mechanism 27 continues to swing even though the first support mechanism 19 has stopped.

As a result, the plate 25, which had previously had the magnet I7 fitted into the hole 26, peels off the sheet-like material 3 held by the magneto-17 without disturbing its position in the width direction. Stay away from 17. Then, the roller 23 of the second support mechanism 27 presses and attaches the tip of the sheet-shaped material 3 to the rubber band 37 at a predetermined position on the outer peripheral surface 35a of the drum, as shown in FIG. 5C. The attachment state position of the support mechanism 27 is set to the third position.At this time, the second support mechanism 27 and the air cylinder 2
The pin 32 connecting the piston rod 28a of 8 can move within the elongated hole 3I of the end fitting 30 of the piston rod 28a, and the pin 32 does not reach either end of the elongated hole 31 and the elongated hole Since there is a margin between both ends of the drum 31, the fA2 support mechanism 27 presses the forward force of the piston rod 28a against the rubber pan 1 37 on the drum outer circumferential surface 35a so as to transmit the forward force of the piston rod 28a directly to the sheet material 3 as a pressing force. Instead, it swings under its own weight and presses the sheet material 3 against the rubber hand 37 using only its own weight. I wanted to do it, sheet material 3
If an excessive load N1 is applied to the rubber hunt 37, there is no risk of damaging them.

When the tip of the sheet material 3 is attached to the rubber band 37, the piston rod 28 of the air cylinder 28 is attached.
a reaches the stroke end and stops.

Next, the drum 35 is driven to rotate, and the sheet 1-shaped material 3 is pressed and pasted onto the rubber band 37 by the roller 23 while being pulled with a predetermined constant tension.

After a certain period of time (adjusted by a timer) has elapsed since pasting started, the piston rod 28a of the air cylinder 28 retreats, and the second support mechanism 27 first swings clockwise in the figure around the pins 5a and 5b.

Return to the second position shown in FIG. At this time, the magnet 17 of the first support mechanism 19 is fitted into the hole 26 of the plate 25 of the second support mechanism 27 again. The second support mechanism 27, which has returned to the second position, continues to return integrally with the first support mechanism 19 to the first position shown in FIG. 5a. When the first support machine tlH9 and the second support mechanism 27 have swung to the first position,
and the piston rod 28a of the air cylinder 28 stops]:
do. Next, the entire pasting device 34 is moved back together with the feeding device 2 to the reference position shown by the imaginary line in FIG. 5a.

The tram 35 stops when the sheet I-shaped material 3 that is being pasted has been pasted to a predetermined length, and is cut by the operation U. Furthermore, at this time, the operator adsorbs the cut end of the 34 examples of pasting devices for the sheet-like material 3 onto the magneso 1-17 with its - side 111) in contact with the guide roller 10.
One cycle of pasting work of sheet material 3 is completed.

As explained above, the present invention has the following advantages: Tie-1, such as a pasting device of a conventional tire molding machine, and a synchronization method for synchronizing the circumferential speed of the forming drum and the feeding speed of the feeding device. In addition to being able to provide a pasting device that does not require any equipment, has a simple structure, and has low equipment costs, it also applies a constant tension to the sheet material (= J
Since the product can be applied while being applied, it is possible to maintain good quality of the product. Furthermore, since the sheet-like material can be positioned and held at a predetermined widthwise position with respect to the tire-forming drum until immediately before pasting, the accuracy of the pasting position of the sheet-like material is improved. Furthermore, the process of applying the sheet material to the tire forming drum is automated to a greater extent than in the past, resulting in various effects such as shortening of cycle time.

[Brief explanation of drawings]

FIG. 1 is a schematic perspective view of an embodiment of the pasting device for forming one pair of tires according to the present invention, and FIG. Perspective view,
3 and 4 are partial cross-sectional views showing a magnet and a vacuum cassop, respectively, as sheet-like H material holding means in the pasting device of FIG. 1, and FIGS. 5 a, b, and C are respectively partial sectional views of the pasting device of FIG. FIG. 2 is a schematic explanatory diagram showing the operating state of the device, in which a shows a state where the device is in the reference position and the first position, b shows a state in the second position, and C shows a state in the third position. 3' ----Sheet 1-shaped material, 10----Guide roller as means for positioning the sheet-shaped material, 15.- Chi 10-ra position δ1jJ1 means, 17--
--- Mag unso 1 as 7 as a means of retaining amulet to sea 1 -
1 18--1-Hagyum Kasop as sheet material holding means, 19-.-First support mechanism, 20; l, 20 b--mm1 Support R lateral movement 11.
Circular long holes as two stages, 23--Roller as sheet-like material pressing means, 25----Plate as sheet-like material peeling means, 27-- -----1 second support mechanism, 33---1 moving mechanism for moving the first and second support mechanisms, 35---1 tire forming drum. Patent applicant: Brideston Tire Co., Ltd. Representative patent attorney: Ugagun Part

Claims (2)

[Claims] (1) A device for pasting (J) a sheet-like material onto a tire-forming drum in a tire-molding machine, comprising a positioning means for positioning the sheet-like material in the width direction, and positioning of the positioning means in the width direction of the sheet-like material. a first support mechanism comprising adjustment means for holding a sheet of material; and a holding means for holding a sheet of material;
Said 4! a second support mechanism comprising: a peeling means for peeling off the sheet material held by the J means from the holding means; and a pressing means for pressing the sheet material against the tire forming tram;
A pasting device for a tire molding machine, comprising: a moving mechanism for moving the first and second support mechanisms toward and away from the tire molding drum. (2) The first support mechanism is driven by the moving mechanism and moves integrally with the second support mechanism from the first position to the second position, and then stops, and moves only the second support mechanism from the second position to the second position. The pasting device for a tire molding machine according to claim 1, further comprising a movement control means for causing the peeling means to peel off the sheet material from the holding means each time the sheet material is moved to three positions. .