JP2003181949A - Tread centering apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a centering apparatus by which centering is performed by accurately obtaining a center position of a tread and which can cope with treads with different gauges and contours. <P>SOLUTION: By providing a hoisting and lowering means 40 for hoisting and lowering the whole apparatus 20 is provided on a roll-type centering apparatus 20 to make heights of centering rollers 23a and 23b from the bottom face of the tread 1 adjustable and by providing a transversely moving means 30 for transversely moving the whole apparatus 20, a CCD camera 50 for picking up a condition where the tread 1 flows on a carrying conveyor 2 and a centering apparatus position setting means for detecting positions of both end parts of the tread 1 from the picked-up image data to calculate the center position of the tread 1 and to calculate amount of transverse movement of the apparatus 20, the whole roll-type centering apparatus 20 is transversely moved to perform centering of the tread 1. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tread centering device for centering a center position of an extruded tread flowing on a conveyer conveyor at a preset position.

[0002]

2. Description of the Related Art In a tire manufacturing process, a rubber material produced in a rubber kneading process and processed into a band shape by a heating roll is sent to an extruder and molded into a preset cross-sectional shape, It is transported by a transport conveyor and sent to the molding process, where it is bonded to other members such as cords, beets and belts on the molding machine to be assembled into one green tire. At this time, the tread immediately after extrusion has a different thickness, width, shape of the side tread portion or the like depending on the lot, so that the center position of the tread flowing on the transport conveyor may be displaced from the center of the transport conveyor.
When the center of the tread is displaced, the position of attaching the member to the tread and the setting position of the marking line, which will be carried out in a later step, are displaced. Therefore, it was necessary to correct the center position of the tread to the center of the conveyor. As a method of correcting the center deviation, the sensor detects the edge of the tread conveyed on the conveyor and estimates the center position deviation of the tread, and the inclination of the cross roll for position correction based on the deviation amount. A method of correcting the tread position by adjusting the amount, swinging the conveyor belt to the left or right, and a pair of laterally movable roll members arranged facing each other on both sides of the extruded tread on the conveyor. There is a method in which a roll type centering device including the above is installed, the roll member is moved in the width direction of the tread, and is brought into contact with the tread to perform centering.

[0003]

However, since the width of the conveyed tread varies, not only the center position cannot be accurately obtained by the method of detecting the edge of the tread, but also the adjustment takes time. Therefore, there was a problem that the response was delayed. Further, when the roll type centering device is used, since the roll member contacts both ends of the tread, the tread can be accurately centered, but the operating range of the roll member is narrow, and thus the tread contour shape is different. In some cases, when the tread is a thin gauge material, it is difficult to cope with it, and when the center deviation is large, there is a problem that it cannot be completely corrected.

The present invention has been made in view of the problems of the prior art. The centering is performed by accurately obtaining the center position of the tread, and the centering can be performed even if the tread has different gauges and contours. The purpose is to provide a device.

[0005]

A centering device for a tread according to claim 1 of the present invention is a roll centering device, tread position detecting means for detecting the positions of both ends of the tread, and the tread position detecting means for detecting the position. Based on the tread center position, the centering device is characterized by comprising means for laterally moving the entire centering device, which allows the center position to be detected accurately with respect to variations in the width direction of the tread. Not only can centering be performed, but the entire roll-type centering device can be moved laterally. Therefore, it is possible to sufficiently cope with a large center deviation. Further, the tread centering device according to claim 2 is characterized in that the tread centering device according to claim 1 is provided with means for moving up and down the entire roll type centering device. With this, since the contact height of the roll member can be adjusted, the centering can be performed accurately even for thin gauge materials, thick gauge materials, and treads having different side tread portions. It becomes possible to do.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a view showing an outline of a tread centering device according to the present embodiment,
Reference numeral 10 denotes a block-shaped base placed below the transport conveyor 2 for transporting the tread 1, and reference numeral 20 denotes a lateral moving means 3 disposed above the transport conveyor 2 on the base 10.
0 and a roll type centering device equipped with a lifting means 40, 50 a CCD camera for photographing the tread 1 flowing on the conveyor 2, and 60 an image processing of the image data from the CCD camera 50 for image processing of the tread 1. It is a control means for detecting the positions of both ends and controlling the centering of the tread 1 using the lateral movement means 30 and the roll centering device 20. The roll-type centering device 20 includes a fixed base 22 on which a drive motor 21 is installed, and a pair of centering rollers 23a, which are arranged to face both outer sides of the lower part of the tread 1 and each include three rotating rolls. , 23b and the centering rollers 23 connected to the drive motor 21.
The support arm portions 24a and 24b for laterally moving the a and 23b are provided. The support arm portions 24a and 24b are configured such that one centering roller 23b is synchronized with the other centering roller 23a. The roller 23a is laterally moved in the direction opposite to that of the roller 23a and is controlled so as to come into contact with both ends of the tread 1.

In this example, the centering device 20 as a whole can be moved upward and downward by raising and lowering the base 10 by the raising and lowering means 40. Specifically, the fixed base 22 of the roll type centering device 20
Is rotatably attached to the upper ends of a pair of side plates 11 and 11 projecting from the base 10 so as to face each other with the transport conveyor 2 interposed therebetween.
1, a rotary shaft 43, which is connected via a bevel gear 42,
The roll type center is provided by suspending by 43 and installing guide members 45m and 45m that slide along guide rails 44m and 44m provided on the side plates 11 and 11 on both end surfaces of the fixed mount 22. The entire ring device 20 can be raised and lowered. That is, the lifting handle 41h provided at the end of the lifting shaft 41 is rotated to move the fixed base 22 in the upward and downward directions of the transport conveyor 2,
By raising and lowering the entire roll type centering device 20, the centering rollers 23a, 23
The height can be adjusted from the bottom surface of the tread 1 of b. Further, in this example, the centering device 20 as a whole can be moved in the left and right directions by moving the base 10 in the lateral direction (the width direction of the tread 1) by the lateral moving means 30. Specifically, a slide member 31 provided with a ball screw is attached to the lower surface of the base 10 and the base 10 is fixed to a fixed base 7 provided with rails 71.
0, and mount the slide member 31 on the traverse motor 32.
By rotating the traverse motor 32, the base 10 is moved laterally (left and right) on the fixed base 70. As a result, the entire roll centering device 20 can be laterally moved.

As shown in FIG. 2, the control means 60 includes a centering device drive means 61 for controlling the drive motor 21 of the roll centering device 20, and the CCD camera 5.
The image data from 0 is subjected to image processing to detect the positions of both ends of the tread 1 to calculate the center position of the tread 1,
A roll type centering device 20 based on the amount of deviation between the center position of the transport conveyor 2 and the center position of the tread 1
Centering device position setting means 62 for setting the amount of lateral movement of the traverse motor 3 based on the amount of movement set above.
And a traverse motor control means 63 for driving and controlling 2.
Control for centering the tread 1 is performed by laterally moving the entire roll centering device 20.

Next, a method of centering the tread 1 by the apparatus having the above-mentioned structure will be described with reference to the flowchart of FIG. First, based on the shape data of the tread 1 sent, the elevating handle 41h is manually rotated to lower the height when the tread 1 is a thin gauge material, and the height when the tread 1 is a thick gauge material. The height of the roll centering device 20 is raised or lowered to set the height from the bottom surface of the tread 1 of the centering rollers 23a and 23b (step S1). next,
CCD camera 5 for tread 1 flowing on conveyor 2
The centering device position setting means 62 detects the positions of both ends of the tread 1 from the imaged image data to calculate the center position of the tread 1 (step S2). Then, the traverse motor 32 is driven and controlled to move the entire roll centering device 20 to the center position of the tread 1, and the centering rollers 23a and 23b are brought into contact with both side surfaces of the tread 1 (step S3). Next, the amount of deviation between the center position of the conveyor 2 and the center position of the tread 1 is calculated (step S4), and the entire roll centering device 20 is moved laterally so that the center position of the tread 1 is the center of the conveyor 2. The tread 1 is centered by moving it to the position (step S5). in this way,
The above step S2 is performed until the extrusion of one lot is completed.
By repeating step S5 to center the tread 1, the center position of the tread 1 can always be held at the center position of the conveyor 2. When performing centering of the next extrusion lot,
Returning to step S1, the height of the entire roll centering device 20 is reset based on the shape data of the tread 1 of the lot.

As described above, according to the present embodiment, the roll centering device 20 is provided with the lateral moving means 30 for laterally moving the entire device 20, and the tread 1 flowing on the transport conveyor 2 is CCD camera. The centering device position setting means 62 detects the positions of both ends of the tread 1 by the centering device position setting means 62 to calculate the center position of the tread 1, and the center position of the transport conveyor 2 and the center position of the tread 1. Since the roll centering device 20 is laterally moved and centered based on the amount of deviation from the center position, not only can the center position be detected accurately with respect to fluctuations in the width direction of the tread 1, Even if the center deviation is large, the centering can be surely performed. In addition, since the roll type centering device 20 is provided with the elevating means 40 for elevating and lowering the entire device 20, it is possible to cope with tread gauge and contour variation in a wide range from thin gauge to thickness gauge.

The roll type centering device 2 is used.
The means for laterally moving or raising and lowering 0 is not limited to the above example, and may be constituted by a known sliding means or a raising and lowering means using a rack and pinion mechanism or the like. Further, in the above embodiment,
Although the lifting handle 41h is manually rotated based on the shape data of the conveyed tread 1 to lift and lower the entire roll centering device 20, a separate means for rotating the lifting handle 41h is provided. At the same time, an elevation handle rotation control means may be added to the control means 60 so that the roll centering device 20 is automatically elevated and lowered.

[0012]

As described above, according to the present invention,
A centering device including a roll type centering device, tread position detecting means for detecting positions of both ends of the tread, and means for laterally moving the entire centering device based on the detected tread center position. The centering of the tread is performed by the above, so not only can the center position be accurately detected and centered for fluctuations in the width direction of the tread, but it is also possible to cope with large center deviations. You can Further, since the centering device is further provided with means for raising and lowering the entire roll type centering device to adjust the contact height of the roll,
It can be used for a wide range of thin gauges to thick gauges.

[Brief description of drawings]

FIG. 1 is a diagram showing a configuration of a tread centering device according to an embodiment of the present invention.

FIG. 2 is a functional block diagram of control means according to the present embodiment.

FIG. 3 is a flowchart showing a tread centering method according to the present embodiment.

[Explanation of symbols]

1 tread, 2 conveyors, 10 bases, 11
Side plate, 20 roll type centering device, 21 drive motor, 22 fixed base, 23a, 23b centering roller, 24a, 24b support arm part, 30 lateral movement means, 31 slide member, 32 transverse motor, 40
Elevating means, 41 Elevating shaft, 41h Elevating handle, 42 Bevel gear, 43 rotating shaft, 44m guide rail, 45m guide member, 50 CCD camera, 60 control means, 61 centering device driving means, 62 centering device position setting means , 63 traverse motor control means, 70 fixed base, 71 rail.

Claims (2)

[Claims] 1. A roll-type centering device, which comprises at least a pair of laterally movable rolls arranged opposite to each other on both sides of a lower portion of an extruding tread flowing on a transport conveyor, and which moves the rolls to center the tread. A tread position detecting means for detecting the positions of both ends of the tread, and a means for laterally moving the centering device based on the detected tread center position. Ring device. 2. The tread centering device according to claim 1, further comprising means for raising and lowering the entire roll type centering device.