JPS61263736A - Covering device for cover cloth on endless belt - Google Patents

Abstract

PURPOSE:To automatically make the overlapping allwance of a cover cloth uniform by fitting the length of the cover cloth to cover an endless belt stock even when the stock is not uniform by a method wherein the peripheral length and pivoting length of the endless belt are detected and the cover cloth is cut off on the basis of the result of the comparison of the detected output values. CONSTITUTION:The peripheral length Lc=2(D+piR) is calculated by inputting the output information of a linear scale 3d or the distance D between the shaft of a stationary side pulley 3a and that of a movable side pulley 3b. After a movable plate 7 is shifted to a detecting position of the finish of cloth covering, a powering means 3c is put into actuation so as to rotate the stationary side pulley 3a in order to pivot the endless belt stock B1 counterclockwise and to cover the periphery of the endless belt stock B1 with cover cloth C by means of a cloth supplying means 12. When the pivoting length S of the endless belt stock B1 comes to a state of satisfying the relationship S=Lc+alpha-F, a means 2a for actuating a cutter is put into actuation so as to cut off the cover cloth C with a cutter 2.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention is utilized in the technical field of manufacturing belts, and particularly relates to an apparatus for covering a material of an endless belt with a cover cloth.

(Prior art) Conventionally, when covering the material of an endless belt before vulcanization with a cover cloth, the endless belt material is covered with a belt-shaped cover cloth made by bias-cutting a cloth of a certain width and coated with rubber, and then By the way, this cover cloth is cut, and the beginning and end of the cover cloth are slightly overlapped and covered. For example, this overlap is 6w
The front and back should be appropriate, and if there are too few lengths, there will be problems with strength, but if they are not long enough, the bending rigidity of that part will increase and the endless belt will not rotate smoothly when hung on the pulleys. Instead, the problem arises that the lifespan is shortened.

On the other hand, automatic devices for automatically covering such an endless belt material with a cover cloth have been known for a long time, and are disclosed in, for example, Japanese Patent Publication No. 51-9852 and Japanese Patent Publication No. 51-3929.
It is described in Publication No. 2.

However, for example, materials for endless belts of the same size do not always have the same circumferential length.

This is due to (a) changes in circumferential length due to distortion and temperature differences in the molding mantle, (b) uneven thickness of the rubber sheet that is the molding material, and (c) the cover cloth being cut on a bias. The apparent length is uneven due to uneven tension; (d) the width is uneven when the material is first cut to a specified width to make the endless belt material; Uneven shape when cutting the bottom of the material into a V shape.

(f) When the endless V-belt material is stretched over the V-belt pulley of the automatic covering device and put under tension, the rubber hardness of the material changes depending on the ambient temperature, so the degree of deformation varies and the apparent belt Due to reasons such as differences in length, even if a cover cloth of the same length is applied to an endless V-belt material of the same size, the overlap margin will not necessarily be the same.By the way, in the two cases mentioned above, The technology described in the publication is for automatically covering the cover cloth, and meets the demand for automatically controlling the overlap of the cover cloth in response to the non-uniformity of the material as described above. It is not a complete product. Therefore, with such conventional cover cloth covering devices, there is a problem in that one operator must be assigned to each device to operate the cover cloth to equalize the overlap. Ta.

(Object of the Invention) In view of the above-mentioned conventional problems, the present invention automatically adjusts the overlap by adapting the length of the cover cloth covering the endless belt material even if the endless belt material is non-uniform. It is an object of the present invention to provide a cover cloth covering device which is made uniform in appearance.

(Structure of the Invention) Means for achieving the above object of the present invention is to supply and cover an endless belt material with a cover cloth, cut appropriate parts of the cover cloth with a cutter, and overlap both ends of the cover cloth. In the cover cloth covering device, the endless belt material is covered by a circumferential length detecting means for detecting the circumferential length of the endless belt material from the shaft distance between two pulleys for hanging and tensioning the endless belt material; a rotation length detection means for detecting the rotation length of the endless belt material as the endless belt material rotates; and a rotation length detection means that detects an output value of the rotation length detected by the rotation length detection means. The apparatus is equipped with a comparison means for comparing with the output value of the circumference detected by the comparison means, and a cutter operation means for operating the cutter according to the output value of the comparison means.

The operation of the means is that the endless belt material is attached under tension between two pulleys, and the circumferential length of the endless belt material is detected by inputting the shaft distance between these two pulleys to the circumference detection means. be done. While the pulley is being rotated to cover with the cover cloth, the rotation length of the endless belt material is detected by the rotation length detection means. These output values of the circumference and rotation length are both input to the comparison means and compared, and when the comparison value becomes a value that can realize an appropriate overlap, the cutter is operated by the cutter operation means. The cover cloth is cut, and the starting and ending ends of the cover cloth are covered with an endless belt material while being overlapped with an appropriate overlap margin.

(Example) Embodiments of the present invention will be described below with reference to the drawings.

The cover cloth covering device l of this embodiment has an endless belt material B1
From the center distance between the cutter 2 that cuts the cover cloth C supplied to cover the belt, and the fixed pulley 3a and the movable pulley 3b that hang and tension the endless belt material Bl, A circumferential length detection means 13 for detecting the circumferential length Lc of the endless belt material Bl, and each of the pulleys 3a and 3.
a rotation length detection means 4 for detecting the rotation length S of the endless belt material B1 accompanying the rotation of b;
a comparing means 5 for comparing the output value of the rotational length 5 detected by the circumferential length LC with the output value of the circumferential length LC detected by the circumferential length detecting means 13; and a cutter actuating means 2a for actuating the cutter.

The endless belt material B1 is fed by the material feeding means 6 toward the upper stationary pulley 3a and the lower movable boot U3b. In the material feeding means 6, an endless chain 6b is suspended between chain sprockets 6a and 6e which are pivotally supported by an auxiliary frame IC so as to be rotatable in a horizontal plane. Belt material B
A hook 6c for hooking the endless belt material B1 is provided, and the endless chain 6b is advanced by an equal distance P by the power means 6d, so that the endless belt material B1 is fed one by one. Furthermore, a material confirmation sensor (for example, a photo sensor) 6e is provided at the feeding end position of the material feeding means 6 (the right end position in FIG. 2) for detecting the presence of the endless belt material B1 at this position. .

On the other hand, the movable plate 7 provided with the fixed pulley 3a and the movable pulley 3b is supported by the guide 1b of the main body frame 1a of the cover cloth covering device l, and is supported by the cylinder device 7a in the left-right direction (see FIGS. 1 and 3). It is provided so as to be positionally controllable at each of the material receiving position (the position shown by the chain line in FIG. 3) and the cloth-covered article discharge position (the position shown by the solid line in FIG. 3) in the left-right direction in the drawing. The movable plate 7 is provided with a well-known heavy covering machine 8 and cloth-covered product removal means 9. The heavy covering machine 8 is for covering the endless belt material B1, which is suspended and tensioned between the stationary pulley 3a and the movable pulley 3b, with the cover cloth C, and is provided with an umbrella-shaped pulley 8a and a support pulley 8b. It is formed by Also, moving plate 7
A known incremental type shaft encoder 4a that rotates in contact with the outer periphery of the tensioned endless belt material B1, and a shaft encoder 4a of the known incremental type that rotates in contact with the outer periphery of the tensioned endless belt material B1, and a shaft encoder 4a that rotates the material 8
A pulley 4b is provided for pressing against a, and a rotation length detecting means 4 is formed.

Further, the cloth-covered article removing means 9 is for removing the cloth-covered article B2, which has finished covering the endless belt material B1 with the cover cloth C, from the fixed side pulley 3a and the movable side pulley 3b, and is moved back and forth by the cylinder device 9a. A push-out plate 9b and a jump lever 9C that jumps forward in conjunction with the push-out plate 9b are provided.

Further, the main body frame 1a is provided with a material transfer means 10,
The endless belt material B is hooked on the hook 6C at the feeding end position of the material feeding means 6! is transferred above the fixed pulley 3a of the movable plate 7 located at the material receiving position. That is, the material transfer means 10 is provided with a clamping tool 10a that clamps and releases the material Bl, and the vertical position of this clamping tool 10a is controlled by a known auto-switch type first cylinder device 10b. At the same time, the longitudinal position (horizontal position in FIG. 2) of the first cylinder apparatus 110b is controlled by the second cylinder apparatus 10c. Furthermore, the clamping tool 10a is provided with a raised position confirmation sensor 10d, a lowered position confirmation sensor 10e, a front position confirmation sensor 10f, and a rear position confirmation sensor 10g, and these sensors are configured by, for example, microswitches.

The fixed pulley 3a and the movable pulley 3b are provided on the movable plate 7 as part of the wheelbase distance detection means 3 for detecting the wheelbase distance, and the fixed pulley 3a is rotationally driven by the power means 3c. It is set up like this. The movable plate 7 is also provided with a power means 7b consisting of a known reversible motor with a brake. A member 7d is supported.

An intermediate boo U 3 e is rotatably supported in the upper part of the vertically moving member 7d, and a bearing part 3 is provided in the lower part to be biased upwardly or downwardly by the extension cylinder 3f.
g is supported to be vertically movable relative to the vertically moving member 7d, and the movable pulley 3b is rotatably supported on this bearing portion 3g. Further, the movable plate 7 is provided with a known absolute type linear scale 3d, and its vertical position is read out by a reading head integrated with the bearing portion 3g. Further, the vertically moving member 7d has a bearing portion 3g for the vertically moving member 7d.
An upper position sensor 3h that detects the upper and lower positions of , a lower position sensor 31 that detects the lower position, and an operating position sensor 3j that detects the operating position intermediate between the upper and lower positions are provided. The operating position sensor 3j detects the vertical position of the movable pulley 3b, which changes depending on the variation in the circumference of the endless belt material Bl, when the endless belt material B1 is suspended between the fixed pulley 3a and the movable pulley 3b and is under tension. These sensors 3h, 3i, and 3j are provided to detect variations, and each of these sensors 3h, 3i, and 3j is constituted by a microswitch. Note that the fixed pulley 3a, the movable pulley 3b, and the intermediate pulley 3e are all formed to have the same radius R.

The cloth-covered article discharging means 11 is provided corresponding to the cloth-covered article removing means 9, and the position of its transfer start end (the right end in FIG. 2) can be moved back and forth with respect to the auxiliary frame 1c. It consists of an endless belt conveyor lla in the front-rear direction and a power means 11b for driving the endless belt conveyor lla.

A cloth supply means 12 for supplying the cover cloth C is provided on the main body frame 1a. The cloth supply means 12 includes a reel 12a wound up with cloth, a power device 112b for feeding out the cloth, and a cloth guide pulley 12c.

The circumferential length detection means 13 detects the endless belt material B from the above-mentioned shaft distance.
It is provided for detecting the circumferential length of l and for controlling each of the above-mentioned components, and includes a known computer 13a including a comparing means 5 made of a known comparing circuit, and a belt size setting means 13b. . The power means 7b is controlled in accordance with the belt size set by the belt size setting means 13b, and the vertical position of the vertically moving member 7d is determined. The control means 13 is further provided with a display means 13c, and FIG. 5 shows the connection between the path line 13d of the control means 13 and each component.

Next, the operation of this embodiment will be explained by following each step of the flowchart shown in FIG. It is assumed that the movable plate 7 is at the material receiving position.

(1) First, read the setting value of the belt size setting means 13b (step P).

(2) Corresponding to the read belt size, the power means 7
b, that is, by rotating the ball screw 7c, the vertically moving member 7
Make the vertical position of d correspond to the belt size (step P
2).

(3) Is there an input from the material confirmation sensor 6e as to whether or not the endless belt material (in this embodiment, the endless belt material) Bs is being fed to the feeding end position of the material feeding means 6? It is determined whether or not (step P3).

(4) If there is no input from the material confirmation sensor 6e,
It is determined whether this state has continued three times (step P4
).

(5) There is no material and the judgment of this state is 3
If it is less than 3 times, the power means 6d is operated to advance the material feeding means 6 by an equal interval P (step Ps). Then, the process returns to step P3.

(6) If the judgment of no input is made three times in step P4, a message indicating that the endless belt material Bl is not present in the material feeding means 6 is displayed (step Pa).

Based on this display, the endless belt material Bl is automatically or manually supplied to the material feeding means 6. If all the work has now been completed, use this cover cloth covering rl11.
to stop.

(7) When there is an input from the material confirmation sensor 6e in step P3, the first cylinder device 110b and the second cylinder device 10c are extended (step P?).

(8) Then, it is determined whether there is an input from both the descending position confirmation sensor 10e and the front position confirmation sensor 10f (step Pa).

(9) When there is an input from both the sensors 10e and 10f, it is determined that the clamping tool 10a is in a position where it can clamp the endless belt material Bl, and the open clamping tool 10a is closed (step Ps). Then, the endless belt material Bl is held.

(lO) Next, the first cylinder device [10b and the second cylinder device if10c are contracted (step P□O). The first endless belt material Bl is prepared at the feeding end position by advancing the endless belt material Bl (step Plt).

(12) Then, it is determined whether there is an input from both the ascending position confirmation sensor 10d and the rear position confirmation sensor Log (step Plz).

(13) When there is an input from both the sensors 10d and 10g, it is determined that the endless belt material Bl is located around the fixed pulley 3a and the upwardly biased movable pulley 3b. Then, the holding tool 10a is opened (step P13). In this way, the endless belt material Bl is fixed side Boo I
It becomes stuck on J 3 a.

(14) Next, extend the extension cylinder 3f, and
In other words, the movable pulley 3b is urged downward (step P 1a) *In this way, the endless belt material Bl is brought into a tensioned state between the two boots IJ 3 a and 3 b (the third
(See the chain line diagram in the figure).

(15) Then, it is determined whether there is an input from the operating position sensor 3j (step P t s ) e(16
) If there is no input from the operating position sensor 3j,
If there is an input from the lower position sensor 31, it is determined to be inconvenient and the state is displayed, and the automatic control is interrupted (step PIB)++ (17) In step PI5, it is determined that there is an input from the operating position sensor 3j. After checking, input the output information of the linear scale 3d, that is, the distance between the axes of the stationary pulley 3a and the movable pulley 3b, that is, the axis distance, and calculate the circumferential length Lc of the endless belt material at = 2 (D
+πR) is calculated (step P17). This circumference detection is executed by a system program inputted in advance to the computer 13a.

(18) Assume that the preparation for covering the cover cloth C is completed according to the above judgments, and after moving the movable plate 7 to the cloth covering completion detection position, actuate the power means 3c to rotate the fixed pulley 3a. The endless belt material Bl is rotated counterclockwise in FIG. 3 (step Pla). Along with this, the heavy covering machine 8 is operated, and the cover cloth C supplied by the cloth supply means 12 is coated around the endless belt material B1.

(19) The output value from the shaft encoder 4a, that is, the rotation length S of the endless belt material B1 is 5=Lc+α−F
(However, α is the overlap margin, and F is the offset distance from the cutter 2 to the shaft encoder 4a, both of which are initially determined.
...Refer to Figure 7)) (Step P19)
. This judgment is based on the output value of the shaft encoder 4a and the step Pi? The information is inputted into the comparing means 5, and judgment is made from the output value. However, the comparison means 5 may not be configured as a hardware such as a comparison circuit, but may be made to carry out this comparative judgment by a function of a system program previously stored in the computer 13a.

(20) When 5=Lc+a−F in step P19, the cutter actuating means 2a is actuated (step Pzo), and the cover cloth C is cut by the cutter 2.

(21) After executing step P20, the computer 13a
The passage of a certain set time is determined by the operation of the timer (step Pzl).

(22) When the set time elapses in step P21, it is assumed that the heavy covering is completed and the power means 3c is stopped (step P22) (23) Then, the extension cylinder 3f is controlled to move the bearing part 3g upward. Applying the force (step P24) When doing so, the tension of the coated product B2 is released and it becomes caught on the fixed pulley 3a.

(24) Next, position the coated product discharging means 11 at the rear (the chain line position in FIG. 4) (step P25). (25) Next, install the cylinder! 19a is extended (step P2B), the push-out plate 9b is pushed forward, and the jump lever 9c is raised. Then, covered product B
2 is detached from the fixed side pulley 3a and coated product discharging means 11
(See the dashed line in Figure 4). Then, by rotating the endless belt conveyor lla counterclockwise in FIG. 2 by the power means Ilb, the coated product B
2 is ejected forward.

(26) Then, extend the cylinder device 7a (step P2?) and return the movable plate 7 to the material receiving position again. With this, one cycle of the cover cloth covering operation is completed, and the process returns to step P3.

In this example, the overlap margin α of the cover cloth C is 6±3 mm.
range, and one operator can handle multiple covers with heavy coating equipment.
I was able to take charge of

In the above embodiments, an endless V-belt was described as the endless belt, but other types of endless belts may be used in the same manner. Furthermore, it is also possible to use an electronic circuit capable of executing each of the steps described above in place of the computer, or to replace the hardware means and software means.

(Effects of the Invention) With the above configuration, the present invention detects the circumferential length of the endless belt material with the circumferential length detection means, and detects the rotation length due to rotation of the endless belt material with the rotation length detection means. , a comparison means is provided for comparing the output values of the circumferential length and rotation length detected by these surface detection means, and a cutter actuation means is provided for cutting the cover cloth according to the output value of the comparison means. , even if there are individual variations in the endless belt material.

It is possible to cut a cover cloth that is longer than the circumference by the amount of overlap, minimizing variation in the amount of overlap.
Not only is the quality of the finished endless belt uniform and good, but there is also the advantage that a single operator can operate a large number of cover cloth covering devices.

[Brief explanation of drawings]

The drawings illustrate an embodiment of the present invention, and FIG. 1 is a front view, FIG. 2 is a side view, and FIG. 3 is an enlarged detailed view of the part ■ in FIG. 1.
Figure 4 is an enlarged detailed view of the ■ part in Figure 2, Figure 5 is a block diagram, Figure 6 is a flowchart, and Figure 7 is the cut length of the cover cloth that is comparable to the rotating length of the endless belt material. FIG. DESCRIPTION OF SYMBOLS 1...Cover cloth covering device, 2...Cutter, 2a...Cutter actuation means, 3...
Wheelbase distance detection means, 3a... Fixed side pulley, 3b.
. . . Moving pulley, 4 . . . Rotation length detection means, 5 . . . Comparison means, 13 . . . Perimeter length detection means (control means). Patent applicant Band - Kagaku Co., Ltd. No. 411! I Figure 6 No. 6121 6th (C)

Claims (1)

[Claims] (1) In a cover cloth covering device that supplies and covers an endless belt material, cuts appropriate portions of the cover cloth with a cutter, overlaps both ends of the cover cloth, and covers the endless belt material. a circumferential length detecting means for detecting the circumferential length of the endless belt material from the bearing distance between two pulleys that are suspended and tensioned; a rotation length detection means for detecting;
a comparison means for comparing an output value of the rotation length detected by the rotation length detection means with an output value of the circumference detected by the circumference detection means; A cover fabric covering device for an endless belt, comprising a cutter actuating means for actuating a cutter.