CN100532076C - Tire tread automatic joint detection device - Google Patents

Abstract

The invention relates to a tire tread auto-joint sensing apparatus for sensing the abnormities of joint part of the tire when the tire tread (3) supplied at a certain length from a tire tread supplier (1) by a conveyor belt (2), the tire tread (3) is jointed by rolling on a roller (4) with belt layers. Height adjustable camaras (5) for lateral runout sensing of the tire tread are arranged on the roller spacing apart form each other at certain length. A laser sensor (6) for ensuring the space in sensing the compartment tank of the joint part are also arranged on the roller. A punch (8) for forming the compartment tank to scull length of the supplied tire tread is arranged on the conveyor belt. When molding the tire tread extruded from the extruder with certain length, this apparatus can ensure if the the tire tread from tire tread supplier to the roller are jointed at correct location, and can make the appratus save of labors and pains.

Description

Tire tread automatic joint detection device

technical field

The present invention relates to a tire tread automatic detection device, which can be supplied from the tread supply vehicle (Servicer) to the belt when molding the tread (Tread) extruded according to a certain length from the extruder. Confirm whether the tread of the layer drum is engaged in the correct position, which can save manpower and effort in the operation of the equipment.

Background technique

Usually, in the tire manufacturing process, when the semi-finished tread that has completed the extrusion process is supplied to the tread drum in the molding process, the tread is wound up in the tread supply vehicle so that the tread does not deviate toward one side. The lateral deviation and according to the splice certain intervals toward the belt drum coiling.

For example, as shown in FIG. 4 , the tread 3 that has finished the extrusion process is supplied to the belt drum 4 for molding from the tread supply vehicle 1 that winds it up through the conveyor belt 2 . 4. The tread 3 that has been wound up and cut to a certain length has no other detection device at its joining portion 3a, so the operator usually checks with the naked eye before joining the tread 3, which will naturally increase the labor load. There is also a problem in improving productivity.

Contents of the invention

The present invention was made to solve the above problems, and its object is to provide a tire tread automatic splicing detection device that checks whether the tread is centered or not when splicing the tread supplied from the tread supply vehicle to the belt drum. The correctness and joint interval are confirmed, and the equipment can save manpower and labor by using automatic tread joint detection on the belt drum.

In order to achieve the above object, the tire tread automatic splicing detection device of the present invention checks whether the tread is spliced or not when the tread supplied with a certain length from the tread supply vehicle through the conveyor belt is spliced on the belt drum for molding. Abnormalities are detected, wherein a height-adjustable tread lateral deviation detection camera and a gap detection laser sensor for detecting the tread gap at the joint part are installed at a certain distance on the belt drum, The conveyor belt is provided with punches forming spaced grooves delimiting a certain length of the conveyed tread.

Description of drawings

1 is an overall schematic perspective view of a tread supply facility showing the installation state of the tire tread automatic splicing detection device of the present invention;

Fig. 2 is an enlarged structural explanatory diagram of a detection part for confirming the centering of the tread in Fig. 1;

FIG. 3 is an explanatory diagram of a detection unit for confirming the tread spacing in FIG. 1;

FIG. 4 is a schematic perspective view of a conventional tire tread supply device, corresponding to FIG. 1 .

Detailed ways

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

Fig. 1 is an overall schematic perspective view of the equipment for supplying the tread to the belt drum through the conveyor belt using the present invention, and Fig. 2 and Fig. 3 are the main parts of the present invention, which confirm the centering condition and interval of the tread A top view of the enlarged structure of the detection unit.

In addition, in FIGS. 1 to 3, the same parts as those in the conventional structure of FIG. 4 are assigned the same reference numerals.

As shown in the figure, in the tire tread automatic splicing detection device of the present invention, when the tread 3 supplied with a certain length from the tread supply vehicle 1 through the conveyor belt 2 is wound up on the belt drum 4 and spliced, Whether or not there is any abnormality in the joint portion 3a of the tread is detected. Wherein, a height-adjustable tread lateral deviation detection camera 5 and an interval detection laser sensor 6 for detecting the interval grooves 7a, 7b of the joint portion 3a are arranged at a certain distance above the belt drum 4. . A punching machine 8 for forming the spacer grooves 7a, 7b is arranged above the conveyor belt 2 . Said spacing grooves 7a, 7b delimit a certain length of the conveyed tread.

As mentioned above, the present invention makes two measurements with respect to the basic tread engagement, firstly, the centering of the tread 3 is detected, that is to say the lateral deviation of the tread 3 . Second, the interval between the joining portions 3a of the tread wound on the belt drum 4 is detected.

Here, a CCD camera is used as a device for checking the lateral displacement of the tread 3 . As shown in FIG. 2, after making the surface of one segment portion 4a of the belt drum 4 white, it is installed, and the end of the one segment portion 4a and the surface of the joint portion 3a of the tread 3 are used as a reference. The distances l, l' to the upper and lower materials are detected by detecting a threshold value (Threshold value) as a black and white detection standard of the camera 5, and the distance is calculated to determine whether there is a lateral deviation.

To describe this in more detail, first, the tread 3 is wound on a belt drum, and then the rotational position of the belt drum 4 is determined so that the tread joint portion 3a is perpendicular to the camera 5 . After the rotation position of the belt drum 4 is determined, the measurement start signal is sent by the existing molding machine. At this time, the distance l from the left side of the tread 3 is confirmed by the camera 5 at the end of a segment portion 4a, and Measure the distance.

The method of checking the end of the tread 3 by the camera 5 is to use the threshold value of 0 to 225 which is generally used as a black and white reference by the camera 5, and to use the characteristic that the surface of the tread 3 is black. When the black portion at the end of one segment portion 4 a and the end of the tread 3 is detected by the camera 5 , the number of pixels (Pixel) read in the camera 5 is received from the camera 5 .

On the basis of the number of pixels of the camera 5 read in this way, the distance l, l' from the end of the tread 3 and the end of a segment portion 4a of the belt drum 4 is actually measured , and then calculate the actual measured distance and pixel number, and calculate the distance equivalent to one pixel in mm (actual length/pixel number)=mm value per 1 pixel).

In this way, on the basis of the mm value per pixel of the camera 5, calculation is performed based on the number of pixels actually measured, and the lateral deviation distance is determined using the upper and lower cylinders of the tread 3 wound on the belt drum 4.

On the other hand, as shown in FIG. 3 , the confirmation of the interval of the tread 3 uses the laser sensor 6 to judge the opening amount and the overlapping amount of the tread 3 , that is, when the belt drum 4 rotates, it is detected by the laser sensor 6 . Calculate the position value of the belt layer drum 4 at this moment after the first interval groove 7a, and calculate the position value of the belt layer drum 4 after detecting the second interval groove 7b by the laser sensor 6, and measure the actual interval groove 7a , 7b intervals, wherein the interval grooves 7a, 7b formed on the tread 3 are formed and displayed at certain intervals by the punching machine 8 of the conveyor belt 2 during transmission.

As mentioned above, the tire tread automatic splicing detection device of the present invention has the following advantages: when the tread is automatically spliced on the belt drum for forming, it can be automatically detected, and the equipment can save manpower and labor.

Claims (1)

1. A tire tread automatic splicing detection device, which detects whether the tread splicing is abnormal when the tread supplied with a certain length from a tread supply vehicle through a conveyor belt is wound up on a belt drum and spliced. The detection is characterized in that a height-adjustable tread lateral deviation detection camera and a gap detection laser sensor for detecting the gap grooves of the tread joint part are arranged above the belt drum. Above the conveyor belt is arranged a punching machine forming spaced grooves delimiting a certain length of the conveyed tread.

Images