JPH0780962A - Removing device for material joint adjusting piece in tire molding machine - Google Patents

Abstract

PURPOSE:To certainly remove a cut material joint adjusting piece to the outside of a conveyor passage and to enhance workability and efficiency by allowing the material joint adjusting piece guided to a supply conveyor to fall from the rear end part of the supply conveyor to feed out the same to the outside of the conveyor passage. CONSTITUTION:A tire molding machine is constituted so that the leading end of a material is cut into predetermined length to adjust the position of a material joint. A support frame is provided in the vicinity of sizing cutters 15, 16 so as to straddle transfer conveyors 3-5. Material joint adjusting piece press means 23-24 having press rollers 34 provided to the leading end thereof and a press roller up-and-down driving means are attached to the support frame and a material joint adjusting piece detection means 25 and the reversible drive means of a supply conveyor 6 are provided above the conveyor 6. Herein, the material joint adjusting piece guided to the supply conveyor 6 is allowed to fall from the rear end of the supply conveyor 6 to be fed out of a conveyor passage.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tire molding machine, in which a belt-shaped material for tire construction (hereinafter simply referred to as "material") is cut into a predetermined size and attached to a tire molding drum to form a cylindrical shape. For example, the present invention relates to a device for automatically removing cut adjustment pieces for adjusting the position of a bias joint.

[0002]

2. Description of the Related Art In a tire forming process, a long material (for example, a bias cord ply) fed from a lower portion on a conveyor of a material supply device (hereinafter referred to as a servicer) installed near a rear surface of a tire forming drum. In a direction orthogonal to the axis of the forming drum by a supply conveyor in which the peripheral speed and the moving speed of the forming drum are synchronized with each other. The molding method of supplying and pasting is generally adopted.

The above-mentioned material, in particular, the bias cord ply, is a long belt-shaped product obtained by joining plies obtained by cutting a wide original sheet into a predetermined width and an angle, and joining the plies in a cross section to form a long strip. It is taken up as a stock roll. Therefore, when the material is cut to size, a seam (bias joint) may be located at the end of the size material.

Conventionally, when a seam is located at an end of a sizing material, when the seam is attached to a tire forming drum, a lap joint portion protrudes abnormally and a bulging portion is deformed and deformed unevenly when the tire is inflated. In order to cause undesired phenomena such as occurrence, when detecting the sizing of the material on the supply conveyor, the seam is detected, and when it is located at the end of the sizing material, the seam is partially cut and removed. (See, for example, JP-A-56-111660).

[0005]

By the way, in the above-mentioned prior art, in order to adjust the position of the material seam, a short adjustment piece cut on the supply conveyor is moved downward to the tire forming drum by the supply conveyor to the tire forming drum. It is necessary to extend the feed conveyor front end below the tire building drum and move it up and down either because it is sent to the end of the tire forming drum or because the material is lengthened by a certain length and attached and then manually removed. However, the structure was complicated and there was a problem in workability.

The present invention has been made by paying attention to the above-mentioned problems, and an object thereof is a simple structure and good workability, and an adjustment in the case of cutting to a predetermined size in the middle of a transfer conveyor. It is an object of the present invention to provide a material seam adjusting piece removing device in a tire molding machine that can reliably send out and remove pieces and can improve efficiency.

[0007]

In order to achieve the above object, the present invention takes the following technical means. That is, the present invention, the belt-shaped material for forming a tire, which is wound into a roll, is fed out on a transfer conveyor and cut into a predetermined length by a sizing cutter, and the sizing material is attached to the tire forming drum with its axis line. It is supplied by a supply conveyor from the orthogonal direction and automatically pasted and molded, and the material seam detection means is arranged in the preceding stage of the cutter, and when the material seam is located at the end of the sizing material, the material tip is of a predetermined length. In a tire molding machine in which the position of a material seam is cut out and adjusted, a supporting frame provided across the transfer conveyor in the vicinity of the sizing cutter, and a pressing roller attached to the tip end attached to the supporting frame. The material seam adjusting piece pressing means, the pressing roller vertical driving means, the material seam adjusting piece detecting means arranged above the supply conveyor, and the forward / reverse driving hand of the supply conveyor. Consists of a, a material seam adjustment piece that led onto the feed conveyor, is dropped from the rear end side of the feed conveyor is characterized in that so as to discharge outside the conveyor path.

[0008]

According to the present invention, the short material seam adjusting piece, which is laid across the cutter table and the lower transfer conveyor pulley cut by the sizing cutter, is provided between the descending presser roller and the pulley. Sandwiched through a belt,
When the lower transfer conveyor is started, it is carried out from the cutter table and sent to the supply conveyor.

When the material seam adjusting piece transferred onto the supply conveyor is detected by the detecting means, the supply conveyor is reversely driven and the adjusting piece is dropped and collected from the rear end side of the supply conveyor. When the adjusting piece is removed from the supply conveyor, the supply conveyor is driven in the forward direction to supply the following material to the tire building drum.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic side view of a tire molding machine adopting the present invention, in which a servicer 1 is installed on the rear side of a tire molding drum 2 and material transfer conveyors 3, 4, 5 are arranged in upper, middle, lower three stages. A common material supply conveyor 6 is provided between each of the conveyors 3 to 5 and the drum 2, and a roll-shaped material 10 rotatably mounted on roll supporting means 7, 8 and 9 at a lower portion. , 11, 12 are arranged.

The transfer conveyors 3 and 4 are composed of first conveyors 3A and 4A and second conveyors 3B and 4B. The second conveyors 3B and 4B are provided with driving means (not shown) so that they can be independently operated. First and second conveyors 3A, 3
B, 4A, 4B are connected by an interlocking device (not shown) with a clutch that can be freely engaged and disengaged, and cutter stands 13, 14 are arranged between the first and second conveyors 3A, 3B, 4A, 4B. , Sizing cutter 1 as the material cutting means on the top
5, 16 are provided.

The transfer conveyor 5 and the supply conveyor 6 are
They are arranged in series on the same plane and can be independently operated by individual driving means (not shown). A cutter table 17 is arranged between both conveyors 5 and 6, and the cutter table 1 is provided.
A sizing cutter 18 is arranged above 7. In addition, the cutter stands 13, 14, 17 and the fixed-size cutters 15, 1
Since 6 and 18 are conventional ones, description thereof will be omitted.

Further, the pulley 6A on the rear end side of the supply conveyor 6 is movable in the front-rear direction by a cylinder or in the front-rear direction, and the pulley 6A and the cutter table 1 are movable.
7, a drop opening O of the material seam adjusting piece (b) is formed (see FIG. 6), and the length of the belt at this time is not shown in the figure by adjusting means (known means). ) Is absorbed by. The drive means of the supply conveyor 6 can be rotated in the forward and reverse directions.

On the first conveyors 3A, 4A and the transfer conveyor 5, measuring rolls 19, 20, 21 (for example, urethane rolls) which are length measuring means for materials are arranged so as to be vertically movable. In addition, a material seam detecting means (for example, a sensor such as a limit switch or a thickness detecting linear gauge) 22 is provided. The material joint detecting means 22 is not shown in the middle and lower transfer conveyors 4A and 5.

The measuring rolls 19 to 21 and the material seam detecting means 22 are capable of abutting on and separating from the respective materials 10 to 12, and the moving amount, that is, the length and the material seam (a) of the respective materials 10 to 12. ) (See FIG. 2) can be measured and detected accurately, and the joint position can be surely grasped so that the seam position is the material sizing set value, that is, the sizing cutting position, and the adjustment piece (b) cutting position. ing.

That is, as shown in FIGS. 2A and 2B, when the material seam (a) is within a predetermined range (for example, within 50 mm) before and after the sizing cutting position (A) of the materials 10 to 12, The tip ends of 10 to 12 are cut by a predetermined amount (for example, 60 mm), and control is performed so that the material seam (a) does not exist within a predetermined range (at least 50 mm) from the front and rear ends of the cut sizing material.

Then, it is located in the vicinity of the cutter bases 13 and 14 and above the starting ends of the second conveyors 3B and 4B on the lower side, and presses the cut material seam adjusting piece (b) to move the second conveyor. Material seam adjustment piece pressing means 23, 24 for surely transferring onto the 3B, 4B are arranged, and the material seam adjustment is provided above the supply conveyor 6 toward the end side of the second conveyor 3B. A piece detecting means 25 (for example, a sensor such as a photoelectric tube) is provided.

Further, just below the rear end of the supply conveyor 6,
A material seam adjusting piece receiving tray 26 is provided. Further, the supply conveyor 6 is arranged so as to be orthogonal to the axis of the drum 2 and the tip of the supply conveyor 6 can be brought close to the upper side of the drum 2. A partial roller 27 and a rear roller 28 for pressing the material onto the upper surface of the front end of the supply conveyor 6 are provided, and a centering sensor 29 and the like are provided.

The material seam adjusting piece pressing means 23, 24
3 have the same structure, and as shown in FIGS. 3 and 4, transfer second conveyors 3B, 4 to the vicinity of the sizing cutters 15, 16.
A support frame 30 provided so as to straddle B, a pair of left and right shaft support frames 31 suspended from both ends of the support frame 30 in the conveyor width direction, and a horizontal shaft pivotally mounted on the lower end of the shaft support frame 31. 32, a pair of left and right roller shaft support arms 33, one end of which is externally fitted to both ends of the horizontal shaft 32, a material seam adjusting piece pressing roller 34 rotatably mounted on the ends of the arms 33, and the horizontal shaft. It comprises a roller up-and-down operating lever 35 whose lower end is fixedly attached, a roller up-and-down driving means 37 and an arm supporting member 38 which are attached to the support frame 30 via an attachment plate 36 and corresponding to the lever 35. .

The support frame 30 has a gate shape, and is provided on a conveyor frame or a servicer frame (not shown) on the conveyors 3B and 4B.
B is attached parallel to the upper surface and the width direction, and the shaft support frame 31 is provided in a suspended manner at both left and right (conveyor width direction) ends of the support frame 30, and the lower end of the shaft support frame 31 has a cutter base 14, 15A, protruding portion 31A
A shaft fitting notch 39 having an open upper end is provided in the above, and the horizontal shaft 32 is rotatably mounted via a bearing 40.

As shown in FIG. 3, the roller shaft support arm 33 comprises a first arm 33A, a second arm 33B, and an arm connecting cylinder 33C. A shaft hole 41 is provided at one end of the first arm 33A. A horizontal shaft 32 is rotatably fitted therein, and an arm connecting cylinder 33C is fixed to the other end.
The base end of the second arm 33B is fitted into the connecting cylinder 33C, and the second arm 33B is detachably fixed to the connecting cylinder 33C with a screw 42 so as to be extendable and contractible.

A shaft hole 43 is provided at the tip of the second arm 33B, and a roller shaft 44 is inserted and supported therein. The roller shaft 44 is parallel to the horizontal shaft 32, and the pressing roller 34 is rotatably fitted over the bearing 45. The pressing roller 34 is made of an elastic material such as synthetic resin or synthetic rubber, and is used for the second conveyor 3B,
4B is located directly above the pulleys 46, 47,
The material seam adjusting piece (b) is sandwiched between the roller and the pulleys 46, 47 via the belt 48 so that the adjusting piece (b) can be reliably sent out from the cutter bases 13, 14 by the movement of the belt 48. is there.

Further, the adjusting piece (b) of the pressing roller 34
The force for pressing is given by the arm 33, the roller shaft 44, and the roller's own weight. Therefore, the first arm 33A is rotatable with respect to the horizontal shaft 32, and the vertical rotation of the arm 33 is prevented. The adjustment is performed by the support pin 38A of the arm support member 38 fixed to the horizontal shaft 32, and the upward rotation is free. Therefore, it is possible to freely respond to the change in the thickness of the adjustment piece (b), and the adjustment is performed. It is possible to smoothly send out one piece (b).

The roller up / down operating lever 35 has a base end boss portion 35A which is externally fitted and fixed to the horizontal shaft 32, and a front end portion 35B which extends upward and faces the driving means 37. The drive means 37 is composed of a cylinder device, and an outer end of a piston rod 37A of the drive means 37 is in contact with a tip end portion 35B of the roller up-down operation lever 35. When the piston rod 37A advances, the lever 35 is pushed to move the arrow. a
When the pressing roller 34 is rotated in the direction, the pressing roller 34 rises and the piston rod 37A retracts, on the contrary, the pressing roller 34 descends due to its own weight or the like.

In FIG. 4, 49, 50 and 51 are stoppers, respectively. Further, FIG. 4 shows only one side in the belt width direction of the material seam adjusting piece pressing means 23, 24, but the other side is symmetrically arranged. However, the roller vertical drive means 37 and the operating lever 35 are only on one side. The materials 10 to 12 are liner sheets 52,
It is wound in a roll shape via 53 and 54, and is fed onto the respective transfer conveyors 3, 4 and 5 while separating and winding the liner sheets 52 to 54 respectively.

Next, the work of attaching the materials 10 to 12 to the tire forming drum 2 and forming them into a cylindrical shape will be described. The sticking and forming operations of the materials 10 to 12 are the same, so only the material 10 (first bias cord ply) will be described. First, the material 10 unrolled on the first conveyor 3A of the transfer conveyor 3 is the material seam detection means 2
Under the operation of 2 and the measuring roll 19, the tip is positioned on the cutter table 13 and is cut and removed by the sizing cutter 15. This cut end piece can be sent from the second conveyor 3B onto the supply conveyor 6, and the supply conveyor 6 can be reversely driven to drop and be removed onto the tray 26.

Then, the cut end of the material 10 is cut by the cutter table 1
In order to separate from the material No. 3, the first conveyor 3A is moved backward to move the material 10 backward by a predetermined distance (for example, about 30 mm) (at this time, the measuring roll 19 is raised so as not to contact the material 10 and is lowered after the backward movement is completed). To make it measurable). Then, the first and second conveyors 3A, 3
The count value of the measuring roll 19 is the retreat distance + (plus) while the material 10 is moved forward while the material B is driven forward to detect the material seam (a).
When the material set length is reached, the transfer conveyor 3 is stopped, and if the material seam (a) is not within the predetermined range (within about 50 mm) before and after the sizing cutting position, the material 1 is left at that position.
Cut 0 to obtain a sizing material.

Therefore, when the material seam (a) exists within a predetermined range before and after the fixed-size cutting position, as shown in FIG. 2, the tip of the material 10 is advanced by a predetermined length (for example, 60 mm) and transferred. The conveyor 3 is stopped and the sizing cutter 15 cuts. At the same time when the cutting of the material seam adjusting piece (b) of a predetermined length is completed, the holding roller 34 waiting at the position shown by the chain double-dashed line 134 in FIG. The adjustment piece (b) is pressed from above as shown by, and is pinched via the belt 48 by the pulley 46.

Next, only the second conveyor 3B is driven forward, and the adjusting piece (b) is sent out onto the second conveyor 3B. This adjusting piece (b) is transferred from the second conveyor 3B onto the advancing supply conveyor 6 to detect the detecting means 25.
When it is detected by, the pulley 6A of the supply conveyor 6 moves forward to open the drop opening O between the cutter base 17 (see FIG. 6), and then the supply conveyor 6 is reversely driven by its driving means. Then, the adjustment piece (b) on the supply conveyor 6 is moved backward and dropped from the drop opening O, removed outside the path of the conveyor 6, and collected on the tray 26.

On the other hand, the cut adjustment piece (b) is carried out from the cutter table 13 and at the same time, the first conveyor 3
After A moves backward by a predetermined distance, the material 10 is moved forward again and is moved forward and measured, and when the sizing position is reached, the adjusting piece (b) is transferred onto the supply conveyor 6, so The first and second conveyors 3A and 3B are stopped, and the material cutter 10 cuts the material 10 to a specified size.

Subsequently, the interlocking of the first conveyor 3A and the second conveyor 3B is released, the second conveyor 3B and the supply conveyor 6 are driven forward, and the cut sizing material 10 is transferred onto the supply conveyor 6 and fixed. The front end of the short material is moved to the standby position of the supply conveyor 6, and both conveyors 3 and 6 are stopped and waited. Next, the tire building drum 2 and the supply conveyor 6
Are simultaneously driven to transfer the tip of the sizing material onto the drum 2. Once the drum 2 and the supply conveyor 6 are stopped,
During this time, the sensor 29 detects both widthwise edges of the sizing material, and the supply conveyor 6 swings to the left and right (drum axis direction) to center the sizing material. 27 and 28 descend,
The material tip is pressed onto the drum 2 and the sizing material is pressed onto the upper surface of the front end of the feed conveyor 6.

Therefore, the drum 2 and the supply conveyor 6 are simultaneously driven to apply a constant tension between the rollers 27 and 28 for the sizing material (the peripheral speed of the drum 2 is set to 1,
While the moving speed of the conveyor 6 is set to 0.98 to 0.999 so as to make a speed difference), the conveyor 2 is wound around the drum 2 and attached to form a cylindrical shape. In this way, both rollers 2
When the sizing material is supplied while being pressed by 7, 28,
Since the material is pasted with a constant tension without slipping, the accuracy of the sizing material both ends overlapping amount, that is, the joint amount is secured, there is no variation, and there is no material joint (a) in the joint part, so the joint part is The quality of the tire is stabilized without bulging abnormally.

When the laminating and molding of the sizing material on the tire building drum 2 is completed, the front roller 27 and the rear roller 28 are raised, and at the same time, the supply conveyor 6 is at its center (origin).
Return to. On the other hand, while the sizing material is attached to the tire building drum 2, not only the slicing of the materials 10 to 12 but also the cutting of the material seam adjusting piece (b) and the carrying out of the conveyor path are performed.

According to the above-mentioned embodiment, since the height of the material seam adjusting piece pressing means 23, 24 can be lowered, it can be sufficiently arranged even if the vertical intervals of the transfer conveyors 3, 4, 5 are narrow, and Since the adjusting piece (b) is pressed by the self-weight of the pressing roller 34, the roller shaft 44, and the roller shaft supporting arm 33, there is no mechanical strain, and the thickness of the adjusting piece (b) can be reliably and easily adjusted. Since the roller shaft support arm 33 can be expanded and contracted, the position of the pressing roller 34 can be adjusted.

The present invention is not limited to the above embodiment, but the design of the material seam adjusting piece pressing means and the like can be appropriately changed.

[0036]

As described above, according to the present invention, the belt-shaped material for forming a tire, which is wound in a roll shape, is fed onto a transfer conveyor and cut into a predetermined length by a sizing cutter, and the sizing material is then cut. Is supplied to the tire building drum from a direction orthogonal to the axis of the tire by a supply conveyor so that the material is automatically pasted and formed.The material seam detecting means is arranged in the preceding stage of the cutter, and the material seam is located at the end of the sizing material. In the tire forming machine, in which the tip of the material is cut by a predetermined length to adjust the position of the material seam, a supporting frame provided across the transfer conveyor in the vicinity of the sizing cutter and the supporting frame A material seam adjusting piece pressing means equipped with a pressing roller at the attached tip, a pressing roller vertical driving means,
The material seam adjusting piece detection means arranged above the supply conveyor and the forward / reverse driving means of the supply conveyor. The material seam adjusting piece guided onto the supply conveyor is dropped from the rear end side of the supply conveyor. Since it is characterized by being carried out outside the conveyor path, the structure is extremely simple and workability is good, and the material seam adjusting piece can be sent out reliably and timely and removed outside the conveyor path. In addition to improving efficiency, the material seam adjustment piece pressing means can be installed even if the vertical interval of the transfer conveyor is narrow, and the material seam adjustment piece receiving tray can be installed at a height close to the work floor and easy to handle. The work efficiency can be improved without hindering the work.

[Brief description of drawings]

FIG. 1 is a schematic side view of a tire building machine equipped with an apparatus according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram of a material seam position adjusting method.

FIG. 3 is a partially cutaway side view of the material seam adjusting piece pressing means in the embodiment.

FIG. 4 is a partially cutaway right side view with a part of FIG. 3 omitted.

FIG. 5 is an operation explanatory view of the embodiment.

FIG. 6 is an operation explanatory view of the embodiment.

[Explanation of symbols]

 2 Tire forming drum 3 Transfer conveyor 4 Transfer conveyor 5 Transfer conveyor 6 Supply conveyor 10 Tire constituent material 11 Tire constituent material 12 Tire constituent material 13 Cutter stand 14 Cutter stand 15 Sized cutter 16 Sized cutter 17 Cutter stand 18 Sized cutter 19 Measuring roll 20 Measuring roll 21 Measuring roll 22 Material seam detecting means 23 Material seam adjusting piece pressing means 24 Material seam adjusting piece pressing means 25 Material seam adjusting piece detecting means 31 Support frame 34 Pressing roller 37 Pressing roller vertical driving means a Material seam B Material seam adjustment piece

Claims (1)

[Claims] 1. A belt-shaped material for forming a tire, which is wound in a roll shape, is fed onto a transfer conveyor and cut into a predetermined length by a sizing cutter, and the sizing material is formed on a tire forming drum at a right angle to its axis. It is supplied by a supply conveyor from the direction to perform automatic pasting and molding, and the material seam detection means is arranged in the preceding stage of the cutter, and when the material seam is located at the end of the sizing material, the material tip is cut by a predetermined length. In the tire forming machine for adjusting the position of the material seam, a support frame provided in the vicinity of the sizing cutter so as to straddle the transfer conveyor, and a pressing roller at the tip end attached to the support frame are provided. Material seam adjusting piece pressing means, pressing roller vertical driving means, material seam adjusting piece detecting means disposed above the supply conveyor, and forward / reverse driving means of the supply conveyor. The material seam adjusting piece removing device in a tire molding machine, characterized in that the material seam adjusting piece guided to the supply conveyor is dropped from the rear end side of the supply conveyor and carried out of the conveyor path. .