KR790001670B1 - Automatic jointing method of rubber coated cloth - Google Patents

Abstract

This method was concerned with an automatic jointing method of rubber coated colths in uniform sizes having a form of parallelogram. The jointing method was composed of a process feeding rubber coated cloth, a process connecting a front cross-sectional area of rubber coated cloth to stopper, a process cramping the front and back cross-sectional area of rubber coated cloth at a front and back part of a table, and a process jointing each cross-sectional area of rubber coated cloths.

Description

Automatic bonding method of rubber cloth

1 is a side view showing one embodiment of the device of the present invention.

2 is a plan view of the apparatus of FIG.

3a to d are detailed views of the vibration conveyor, (a) is a side view, (b) is a plan view, (c) is a right side view of (a), and (d) is an enlarged cross-sectional view of (a).

4, 5, and 6 are cross-sectional views taken along the IV-IV, V-V, and VI-VI lines of Fig. 2, respectively.

FIG. 7 is a cross-sectional view taken along line 6 of FIG.

8 is an operation diagram.

9th time Chaat.

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a method of automatically gluing a parallel quadrilateral rubber coating cloth cut at a predetermined length and angle. More specifically, the present invention relates to a tire, belt, and other rubber products. The present invention relates to a method for automatically contacting and contacting a terminal teeth of a rubber coated cloth which is cut at an angle at a predetermined dimension and at a predetermined angle (hereinafter referred to as a butt splice).

In the manufacturing process of tires, belts and other rubber products, a long rubber coated bias fabric is used as the intermediate material.

In manufacturing the elongated rubber-covered bias fabric, a long rubber-covered fabric is placed on a conveyor, and the conveyor is cut at a certain dimension and at an angle with a bias cutter while the conveyor proceeds in units of a certain distance.

In this way, a long rubber-covered bias fabric is produced by sequentially joining the terminal portions of the rubber-covered fabric cut at a constant angle to a certain dimension.

This elongated rubber-covered bias fabric is cut and used again to a certain dimension in accordance with tire dimensions when producing a tire or the like.

In order to obtain a high quality tire, it is necessary that the above-mentioned rubber-coated bias grape uniform material is used, and for that reason, it is important that the rubber-covered cloth is uniformly bonded at the above-mentioned joint.

As this joining method, a method (butt splice) is generally known to be bonded to a method of overlapping and joining a terminal (wrap splice).

As the wrapped splice, it is easy to cause an unbalance in thickness and strength in the joint, and the butt splice is the best method in view of the uniform splice.

The present invention relates to a method for automatically performing this butt splice.

Conventionally, Japanese Patent Publication No. 1962-8471 discloses this kind of butt splice device.

This apparatus clamps and presses after conveying a rubber sheet with the belt conveyor provided before and behind a splice apparatus.

In general, in order to obtain a good butt splice, the two ears of the compressed rubber coating cloth are parallel to each other at regular intervals, so that both ears are pressed and crushed by the clamp and the pressing mechanism while maintaining the state. It is necessary to do

Ripples of the rubber-covered cloth are not limited to being always straight over the entire width, but ripples occur at a large period.

Since the conveying mechanism by the belt conveyor as described above does not have a correction function in the belt conveyor itself, it is impossible to always maintain such a rubber covering cloth stably in parallel and at regular intervals, and thus a clamp and a crimping device. You must supplement this with

Therefore, the clamp and the pressing device are extremely complicated.

It is therefore an object of the present invention to provide an automatic bonding method of a rubber coated cloth in which a rubber coated cloth is conveyed, an alignment butt splicing step and the like are performed automatically, and a uniform splice state is obtained.

Another object of the present invention is to arrange and supply the rubber coating cloth to the vibration conveyor from before and after the splicer, so that the flexible rubber coating cloth can be accurately supplied to the designated position.

Another object of the present invention is to clamp a rubber cloth on a front and back table that can be accessed and retracted, and to allow automatic joining of a simple mechanism that allows the table to approach and splice.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the following, embodiments of the present invention are described in detail with reference to the drawings, in which Figs. 1 and 2 show a side view and a plan view of the entire apparatus of the present invention, where 1 represents rubber cut to a predetermined length and angle. A forward vibration conveyor for aligning the coating cloth S and transferring it to the next splicer 2, 2 is a splicer for joining rubber coating cloths, and 3 is for moving the waiting rubber coating cloth to the splicer 2. Retractable vibratory conveyor, 4, indicates a takeover conveyor that takes over a spliced rubber sheath.

The detailed view of the above-mentioned forward vibration conveyor 1 is shown in FIGS. 3A-3D.

In these figures, 5 is a trap with an air chamber 6 at the bottom, and a guide plate 7 is provided at one side end.

The trap 5 is connected to the lower diaphragm 9 via the spring 8.

An excitation device 10 is fixed to the diaphragm 9. The diaphragm 9 is installed on the base 11 via a spring 12.

The upper surface of the base 11 has an inclination angle β in the front side (splice device side) and a downward inclination angle α in the left side (the guide plate 7 side).

As a result, the trap 5 is disposed at the same slope as the inclination angles α and β of the base.

On the upper surface of the trap 5, a small hole 13 penetrating to the Chenver is provided over the entire surface. However, the small hole 13 may not be provided at all.

The role of the pores is to speed up the conveyance of the rubber cladding. When the rubber cladding is transported over the trap, air is likely to collect between the rubber cladding and the upper surface of the trap due to vibrations. This air layer causes a drop in the conveyance speed of the rubber coating cloth. Thus, in order to increase the transport speed, through the entire surface of the trap, through a number of small pores penetrating to the Chenver, the inside of the Chenver is operated at atmospheric or slight negative pressure, so that the collected air is introduced into the Chenver. It can be pulled out and speeded up.

In addition, in order to increase the transport speed, it is possible to install the inclination angle β in the trap 5, but the inclination angle β may not be required.

In the above guide plate 7, it is necessary to provide small holes 14 at appropriate intervals so that the air collected between the rubber covering cloth and the upper surface of the trap is removed in the horizontal direction.

In the absence of this small hole 14, the air flows out from the surface where the rubber-covered cloth S and the guide plate 7 come into contact with each other even though air is blown out by the small holes drilled in the trap. Due to air flow, the rubber covering cloth is separated from the guide plate and becomes a bug-like shape and does not immediately proceed along the guide plate.

The above-mentioned retracting vibration conveyor 3 also has substantially the same structure as the forward vibration conveyor 1, except that the vibration direction is inverse to that of the forward vibration conveyor 1.

4 to 7 show the details of the splicer 2 described above.

In these figures, a pair of cam plates 16 and 16 'are fixed to the left and right on the mount 15.

As shown in Fig. 7, the cam plates 16 and 16 'are provided with grooves 17a and 17b in the arc shape before and after.

Slide bases 18 and 18 'are mounted on the cam plate 16 and 16' freely.

The cam follower 19a, 19b is fixed to the lower surface of this slide base 18, 18 ', and the cam follower 19a, 19b is sliding in the groove 17a, 17b of the cam board 16, 16' mentioned previously.

The struts 20a and 20a 'are fixed to the upper ends of the slide bases 18 and 18', and the front table 22a is installed freely by rotation of the collar 21 by mediating the collars 21 to the struts 20a and 20a '.

(FIG. 5, FIG. 6) All the support posts 20a protrude above the table 22a, and the clamp plate 23a slides on the protruding part 20a 'of this support freely.

A beam 24a is fixed to the upper end of the protruding portion 20'a of the post, and a cylinder 25a for clamping is fixed to the center of the beam 24a, and the rod of the cylinder 25a is connected to the clamp plate 23a.

The slide shafts 18, 18 'described above are mounted with slide shafts 26, 26' facing in the front-rear direction.

Sliders 27, 27 'are mounted on the slide shafts 26, 26', and posts 20b, 20b 'are fixed to the slides 27, 27'.

The rear table 22b is freely rotated through the collar 21 via the collar 21 on the support 20b, 20b ', and the clamp plates 23b, 24b and the clamp cylinder 25b are mounted on the protrusion 20b' of the support 20b, 20b 'as described above. It is assembled.

The rotary shaft 26a is mounted in the vertical direction at the lower center of all the tables 22a described above (see FIGS. 4 and 5). This rotary shaft 26a is connected to the steering wheel 39 for angle adjustment via the dignity reducer 28 installed on the mount 15. On one side, the rotary shaft 26b is also fixed to the lower center of the rear table 22b, and the rotary shaft 26b is freely connected to the rod of the splice cylinder 29 fixed on the mount.

Stoppers 31a and 31b supported on the shaft 30 are disposed at ends where the tables 22a and 22b described above face each other. The stoppers 31a and 31b are connected to the rods of the rotating cylinders 32a and 32b, respectively, whereby they are rotated 180 degrees with the axis 30 as a point and fall below the tables 22a and 22b.

The conveyance conveyor 4 described above is composed of a belt 33, a motor 34 driving the belt, and a reduction gear 35. In the diagnosis of the belt conveyor 4, a dancer roller 37 vertically driven by a cylinder 36 is installed.

38a 'is a light emitting diode all mounted at the end of the table 22a, 38a is a light receiving element embedded in the clamp plate 23a directly above it, 38b' is a light emitting diode embedded at the end of the rear table 22b, 38b is It is a light receiving element mounted on the clamp plate 23b directly above it.

When the action is explained based on the above-described configuration, before entering the joining operation, the angles θ of the front and rear tables 22a and 22b of the splicer 2 are first adjusted to the cutting angle Φ of the rubber coating cloth S.

This angle adjustment is done by turning the handle 39.

When the handle 39 is turned, the rotary shaft 26a is rotated via the reducer 28, whereby the whole table 22a is rotated around the rotary shaft 26a.

Since both ends of the table 22a are connected to the posts 20a and 20a 'fixed to the slide bases 18 and 18', the slide bases 18 and 18 'also move in opposite directions on the cam plates 16 and 16' at the same time.

At this time, the camp followers 19a and 19b of the slide bases 18 and 18 'move along the grooves 17a and 17b of the cam plates 16 and 16'.

Incidentally, in the example of FIG. 1, the cutting angle Φ of the rubber covering cloth S is an example of 90 degrees (for example, a material for radial tires), and therefore, the angles θ degrees of the tables 22a and 22b are displayed at 90 degrees.

Needless to say, in the case of the bias cloth, the cutting angle Φ and the table angle Θ are both acute.

The bonding operation is performed after the angle adjustment as described above, but the operation will be described sequentially based on FIG. 8 (see FIG. 8 Time Chart).

FIG. 8a: Retracts the rod of the splice cylinder 29, increases the distance between the tables 22a and 22b, and then protrudes the stoppers 31a and 31b upward by the rotary cylinders 32a and 32b, and then adjusts the crimping degree. Do it. The degree of crimping is determined by the cross sections of the tables 22a and 22b and the intervals between the stoppers 31a and 31b. When the spacing is changed, the degree of crimping is adjusted.

0.5-3 mm is suitable for this crimping degree.

Then, the clamp plate 23a, 23b is pulled up by the cylinders 25a, 25b for clamping, the dancer roll 37 is pushed up by the cylinder 36 with the first tile, and the rubber cloth S is placed on the first vibration conveyor 1st. Settle together.

Although not shown, this rubber sheath is cut with a known bias cutter and is automatically sent to the top of the vibration conveyor by a transmission device.

The above is an initial condition, and an automatic joining operation is started below.

가 스토퍼 31b에 닿을 때까지 전진시킨다.FIG. 8B: Lower dancer roll 37 with driving forward vibration conveyor 1 and retraction vibration conveyor 3. Rubber covering cloth S of the forward vibration conveyor 1 is a side by vibration of this vibration conveyor 1.

Until it reaches the stopper 31b.

변이 가이드판 7에 접하여 완전한 평행상태로 된다.Since the trap plate 5 of the vibration conveyor 1 is at the lower side of the guide plate, and the guide plate is formed with the holes 14 for air release, the rubber covering cloth S moves slowly toward the guide plate 7 while advancing and reaches the stopper 31b. While

The sides are in complete parallel with the side guide plate 7.

Since the rubber covering cloth S 'waiting for the retraction vibration conveyor 3 after the abrasion is terminated loses tension due to the lowering of the dancer roller 37, the stopper 31a is caused by the vibration of the retraction vibration conveyor 3. Retreat until you reach.

In the movement, the rubber covering cloth S 'approaches and parallels to the guide plate 7 side as described above.

Optoelectronic elements 38a, 38a 'and 38b, 38b' detect that the front and rear rubber covering fabrics S, S 'were sent to the stoppers 31a, 31b, respectively.

7C: Rods of the cylinders 25a and 25b for the clamp protrude due to the detection signals of the photoelectric elements 38a, 38a ', 38b and 38b', and the clamp plates 23a and 23b are lowered to terminate the terminals of the rubber covering fabrics S and S '. Each was clamped.

Fig. 8d: The rotation cylinders 32a and 32b are operated so that the stoppers 31a and 31b rotate 180 degrees and escape from the tables 22a and 22b.

Fig. 8E Fig. 8 shows that the splice cylinder 29 is operated so that the rear table 22b is in contact with all the tables 22a, thereby compressing the ends of the rubber covering cloths S and S '.

8f: Clamp cylinders 25a and 25b operate to raise the clamp plates 23a and 23b.

Fig. 8g: The joining cylinder 29 is operated so that the table 22b is retracted.

FIG. 8h FIG. 8: The dancer roller 37 rises and the takeover conveyor 4 is driven to take over until the end of the bonded rubber coating cloth S has finished passing through the photoelectric elements 38a, 28a '.

The stoppers 31a and 31b are projected upward.

It is possible to fix a new rubber coating cloth on the forward vibrating conveyor 1 below and to repeat the operation of FIG. 8A or below to automatically obtain a long butt-spliced rubber coating cloth.

As described above, according to the present invention, the conveyance, positioning, joining, and the like of the rubber coating cloth are all performed automatically, thereby achieving complete unmanning.

In particular, in the present invention, since the vibration conveyor is used for conveying and positioning the rubber coated cloth, it is supplied without transforming the flexible and sticky rubber coated cloth, and the precise parallelism and spacing do not naturally exist just by touching the surrounding end to the stopper. There is a great effect that a certain amount of bonding is always obtained.

For example, even if the rubber covering cloth is not parallel but part of the teeth has been conveyed in contact with the stopper first, it is automatically corrected until it is completely parallel by the inclination and vibration of the trap.

As such, the splicer also has the advantage of simplifying the device as a whole with simple clamping and crimping mechanisms.

Claims (1)

Supplying the rubber coated cloth cut at a predetermined length and angle onto the trap of the vibration conveyor so that the cutting edge terminal side of the rubber coated cloth almost runs in the longitudinal direction of the trap of the forward vibration feeder, and the forward vibration. By vibrating the conveyor, the rubber covering cloth is advanced toward the rear table while following the guide plate provided with its cut end side on the side edge of the trap, and the rubber covering cloth is attached to the stopper provided at the front edge of the rear table. The process of positioning by contacting the shear edge and the rubber coating cloth which is already attached and waiting are carried out according to the guide plate installed on the side edge of the trap by the vibration of the reversing vibration conveyor. Positioning process by contacting the rear end of the rubber cloth with a stopper provided at the rear end of the table. The step of clamping the end portion of each rubber coating cloth by lowering the clamp plate, and after each stopper is separated from the end portion of the rubber coating cloth, the front and rear tables are approached and the ends of the rubber coating cloth are joined together. And raising the respective clamp plates to release the clamps, and then extracting a predetermined amount of the spliced rubber clad cloth with a take-up conveyor installed in front of the vibration conveyor.

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