JP2000159399A - Method and device for joining strip member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To maintain quality by eliminating junction errors caused by variations in width among strip members. SOLUTION: In a strip member joining method, a strip member 2 is supplied onto a conveyor 13 by a predetermined amount in a certain direction from a fixed side position and cut; the strip member 2 cut is moved by means of the conveyor 13 and the edge of a following strip member 2 supplied in succession is made to overlap the leading strip member 2 moved, with their overlapping parts joined together; the above processes are repeated. The width of the strip member 2 supplied onto the conveyor 13 is measured and the amount of movement of the conveyor 13 is controlled in accordance with this measurement to adjust the overlapping width of the leading and following strip members 2 to become almost constant.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for joining strip members.

[0002]

2. Description of the Related Art A method of manufacturing a new belt-like member by sequentially cutting a belt-like member in which a steel cord or the like is embedded in a tire component into a predetermined length and overlapping and joining together non-cut end portions. is there.

[0003] In the apparatus, a predetermined amount of a band-like member is supplied to a conveyor from a predetermined position laterally in a predetermined diagonal direction, cut along the side edge of the conveyor, and the cut band-like member is moved by a predetermined amount by the conveyor. Subsequently, a predetermined amount of the belt-shaped member is supplied onto the conveyor in a diagonal predetermined direction from a predetermined position, and the succeeding belt-shaped member is joined to the preceding belt-shaped member moved by the predetermined amount by overlapping the end portion thereof. is there.

[0004] The amount of movement of the conveyor is calculated in advance from the prescribed width of the supplied band-like member and the required width of the superimposed portion, and set to the same amount of movement to drive and control the conveyor. When the following band-shaped member is supplied after moving the band-shaped member to be moved by a set amount of movement, the edges of both band-shaped members overlap each other, and the overlapping portion can be joined.

That is, since the belt-like members supplied and cut by the supply means are sequentially supplied from the same position to the conveyer which moves intermittently by a constant moving amount, the cut-like band-like members end at a constant pitch on the conveyor. The edges can be overlapped and arranged, and the joining operation can be performed efficiently.

[0006]

However, the belt-like member is
It is inevitable that the width of the belt will vary due to the increase or decrease of the line speed.If the width of the belt is arranged at a constant pitch on a conveyor on which the belt moves at a constant distance, the width of the overlapping portion may be reduced. It will be a long variation. The variation in the width of the overlapped portion causes a bonding failure, and in the case of a band-shaped member in which the cords are embedded, the pitch of the embedded cords varies, making it difficult to maintain quality.

SUMMARY OF THE INVENTION The present invention has been made in view of the foregoing, and an object of the present invention is to provide a method of joining a band-shaped member and a method of joining a band-shaped member capable of eliminating poor joining caused by variation in the width of the band-shaped member and maintaining quality. The point is to provide a joining device.

[0008]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention is to supply a predetermined amount of a band-shaped member from a fixed position on a side in a predetermined direction, and cut the band-shaped member. Moving the cut strip-shaped member on the conveyor, superimposing the edge portion of the succeeding strip-shaped member continuously supplied on the moved preceding strip-shaped member, and repeating the joining of the overlapped portion sequentially. In the joining method of the members, the width of the belt-shaped member supplied on the conveyor is measured, and the amount of movement of the conveyor is controlled based on the measured value so that the overlap width of the preceding belt-shaped member and the following belt-shaped member is substantially constant. The joining method of the belt-shaped member adjusted to be as follows.

[0009] Even if there is variation in the width of the belt-shaped member supplied on the conveyor, the width of the scattered width is measured, and the amount of movement of the conveyor is controlled based on the measured value, so that the preceding belt-like member and the following belt-like member are moved. The overlap width between the edge portions of the belt-like member can be adjusted to be substantially constant. Therefore, it is possible to eliminate the bonding failure between the band-shaped members and maintain the quality high.

According to a second aspect of the present invention, there is provided a conveyor for moving a belt-like member, supply means for supplying a predetermined amount of the belt-like member from a fixed position on the side in a predetermined direction, and a belt-like member of the supply means. Cutting means provided immediately before the conveyor to be supplied, pressing and joining means for pressing and joining an overlapping portion of a preceding band-shaped member and a succeeding band-shaped member on the conveyor, and provided near the cutting means. Width length measuring means for measuring the width of the supplied strip-shaped member, and control means for controlling the drive of the conveyor, the supply means, the cutting means, and the pressing and joining means to join a series of strip-shaped members. The control means inputs the measurement signal of the width length measurement means, controls the movement amount of the conveyor based on the measurement value of the measurement signal, and controls the edge portions of the preceding belt member and the succeeding belt member. Approximately one overlap width A bonding apparatus of the belt-shaped member to be adjusted.

The width of the supplied strip is measured by width measuring means, and the amount of movement of the conveyor is controlled based on the measured value, so that the edges of the preceding strip and the trailing strip are connected. Since the overlapping width is adjusted to be substantially constant, it is possible to eliminate the bonding failure between the belt-shaped members and maintain the quality high.

According to a third aspect of the present invention, in the band-like member joining apparatus according to the second aspect, the supply means supplies the belt-like member obliquely from a fixed position on the conveyor.

When the cord is buried in the belt-like member to be supplied in the longitudinal direction and is supplied obliquely on the conveyor, the cord is arranged obliquely to the conveyor moving direction. The band-shaped member is moved in this state, and the band-shaped members are sequentially joined in the moving direction, so that a so-called bias cord-shaped band member in which the cord is obliquely embedded can be formed.

According to a fourth aspect of the present invention, in the band-like member bonding apparatus according to the second or third aspect, the width measuring means photographs the band-like member supplied by the supply means with a camera. The width of the belt-shaped member is measured by analyzing the photographed image.

Since the supplied belt-like member is photographed by a camera and the photographed image is analyzed to measure the width of the belt-like member, the width-length of the belt-like member can be accurately measured without contacting the belt-like member. .

According to a fifth aspect of the present invention, in the band-like member joining apparatus according to the second or third aspect, the supply means includes a pair of guide members for guiding the band-like member so as to sandwich the band-like member from both sides. The length measuring means measures the distance between the pair of guide members to measure the width of the band-shaped member.

By measuring the distance between the guide members using a guide member for guiding the band members, the width of the band members can be measured.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to FIGS. FIG. 1 shows a schematic plan view of the entire band-like member joining apparatus 1 of the present embodiment. The operation of joining the supplied belt-like members 2 to form and move a new belt-like member 3 is performed on the belt conveyor 10.

The belt conveyor 10 has a pair of front and rear rotating rolls 11 and 12, a conveyor belt 13 is stretched over the pair of rotating rolls 11, and a timing pulley 12 a and a timing pulley 12 a fitted on a rotating shaft of one rotating roll 12.
A timing belt 16 is stretched between the drive shaft of the C servo motor 15 and a timing pulley 15a.
Accordingly, the rotation of the rotary roll 12 via the timing belt 16 is driven by the driving of the AC servomotor 15, and the rotation of the rotary roll 12 rotates the conveyor belt 13 to move the belt-shaped member 3 on the conveyor belt 13.

A roller conveyor 20 for feeding the belt-shaped member 2 to the belt conveyor 10 from a fixed lateral position in a predetermined diagonal direction is provided. It should be noted that a plate may be simply used instead of the roller conveyor 20. The roller conveyor
Numeral 20 is provided on the rotating roll 11 so that the belt-shaped member 2 can be supplied onto the conveyor belt 13 at an angle of 30 degrees from the left with respect to the moving direction of the conveyor belt 13.

Conveyor belt 13 to which the belt-shaped member 2 is supplied
Cutting device so that the cutter 26 travels along the left edge of the
25 are arranged. The cutter 26 is attached to the lower end of a telescopic rod 27a projecting below the cylinder 27,
The cylinder 27 itself is suspended so as to travel back and forth above the left edge of the conveyor belt 13.

When the cylinder 27 descends the cutter 26 and travels back and forth, the cutter 26 can cut the belt-shaped member 3 supplied to the conveyor belt 13 along the left edge of the conveyor belt 13. Note that the cutter 26 may be of a so-called guillotine type that descends and pushes out.

The belt-shaped member 2 supplied to the conveyor belt 13
Is a strip formed by coating a plurality of steel cords 4 with rubber, and the steel cords 4 are in a state of being buried oriented in the longitudinal direction of the strip. Then, in the process of extruding the band-shaped member 2, ear rubber is formed on both sides of the band-shaped member 2, but the left ear rubber is cut off and the right ear rubber 2a is left as shown in FIG. The belt-shaped member 2 is supplied.

In order to transfer the belt-like member 2 placed on the roller conveyor 20 to the conveyor belt 13, a drawer 30 is provided above. The pulling-out device 30 is used for the cut strip-shaped member 2.
A suction plate 31 having a substantially parallelogram shape is suspended from above in a horizontal posture, and the suction plate 31 is slightly wider than the band-shaped member 2 and has an electromagnet built therein.
The belt-shaped member 2 can be sucked by sucking the steel cord 4 inside.

The suction plate 31 is reciprocally supported between the upper part of the roller conveyor 20 and the upper part of the extended conveyor belt 13 along the conveying direction of the belt-shaped member 2 and can be moved up and down. Is suspended.

Accordingly, the suction plate 31 is lowered to the end of the belt-shaped member 2 conveyed by the roller conveyor 20 to excite the electromagnet, and the end is adsorbed. By pulling it out, lowering it in place, and demagnetizing the electromagnet, the conveyor belt 13
A strip 2 can be supplied on top.

Note that the suction plate is slightly wider than the band-shaped member 2.
31 is used as a press joining means, and the conveyor belt 13
A suction plate is placed on the belt-like member 2 with the edges overlapped on the top.
31 is pressed to join the edges. A receiving plate 32 is provided along the conveyor belt 13 below the back surface of the conveyor belt 13 when the suction plate 31 is pressed.

A long fluorescent lamp directed in the width direction between the rollers 21, 21 on the roller conveyor 20 for supplying the belt-shaped member 2.
35 is provided and illuminates the belt-shaped member 2 to be conveyed from below, and light protrudes from both sides. A CCD camera 36 is suspended above the fluorescent lamp 35 and above the band-shaped member 2. The signal detected by the CCD camera 36 is input to a computer and analyzed.

Therefore, the light emitted from the lower side of the belt-like member 2 is blocked by the belt-like member 2 and the light protruding from both sides is converted to CC.
The computer calculates the actual distance indicated by the distance between the two pixels from the pixels on both sides where the light is detected by the D camera 36, and measures the width of the band-shaped member 2 (including the ear rubber 2a). it can.

As described above, the CCD camera 36 is mounted on the belt-shaped member 2.
The width can be measured with high accuracy without contact. The CCD cameras 36 are located at a position higher than the suction plate 31 of the drawer 30 and do not interfere with each other.

A computer for calculating the width of the belt 2 is an AC servomotor for rotating the conveyor belt 13 of the belt conveyor 10 based on the width of the belt 2.
15 is driven and controlled.

The joining apparatus 1 is configured as described above. The operation procedure will be described. First, first, the joining section first attaches the leading end of the belt-shaped member 2 on the roller conveyor 20 to the suction plate 31 of the drawing apparatus 30. Adsorbs on the conveyor belt 13 at an angle of 3
The belt-shaped member 2 is pulled out by a certain amount at an angle of 0 degree, placed on the stopped conveyor belt 13, and then moved down by the cutter 26 of the cutting device 25, and the belt-shaped member 2 is slanted along the left edge of the conveyor belt 13. Cut into pieces.

In the meantime, the CCD camera 36 takes an image of the succeeding strip 2 to be drawn next on the roller conveyor 20, and the computer calculates the width of the strip 2 in advance. Then, the cutter 26 is returned to the original home position, and the belt-like member 2 released by lifting the suction plate 31 by releasing the suction is driven by the AC servomotor 15 to the conveyor belt 13.
Is rotated to move by a required amount.

This moving amount is determined based on the width of the succeeding band-like member 2 calculated by the computer first, and the AC servomotor 15 is controlled to drive the preceding band-like member 2 by the determined moving amount. Move with precision

At approximately the same time as the movement by the conveyor belt 13, the suction plate 31 of the drawer 30 moves onto the roller conveyor 20, sucks the leading end of the following belt-shaped member 2, and pulls out a certain amount on the conveyor belt 13. Place.

The preceding belt-like member 2 is moved by a required amount of movement so that the trailing belt-like member 2 placed later on the preceding belt-like member 2 partially overlaps its edge. The front edge of the substantially succeeding strip 2 is superimposed on a portion of the ear rubber 2a which corresponds to the rear end of the preceding strip 2 in the conveying direction of the conveyor belt 13 (see FIG. 4), and the overlap width L is reduced. The moving amount of the preceding belt-shaped member 2 is controlled so as to always have a required constant width. An example of calculating the amount of movement of the preceding belt-shaped member 2 by the conveyor belt 13 will be described later.

In this manner, the succeeding band-shaped member 2 placed on the suction plate 31 with the edges overlapped at the required constant width L is
The overlapping portion is pressed and joined by being pressed from above by the suction plate 31. Then, the following belt-like member 2 is cut obliquely along the left edge of the conveyor belt 13 by traveling along the cutter 26 of the cutting device 25, and the belt-like member 2 which is subsequently pulled out onto the roller conveyor 20 is CCD camera 36 And the computer calculates the width of the band-shaped member 2 in advance.

The above operations are sequentially repeated to form a new belt-shaped member 3. The new belt-shaped member 3 forms a belt-shaped member of a so-called bias cord in which the cord is buried diagonally.

When the belt-like members 2 are joined, by controlling the amount of movement of the preceding belt-like member 2 based on the width of the following belt-like member 2, even if the width-length of the belt-like member 2 varies. The overlapping width can always be maintained at a required constant width, and no bonding failure occurs.

By maintaining the overlap width L at a required constant width, as shown in FIG. 4, the front end edge of the succeeding band-shaped member 2 having a constant width L is approximately formed at the ear rubber 2a portion of the preceding band-shaped member 2. When they are overlapped, crimped and joined, as shown in FIG. 4, the steel cords 4 buried in the inside of the band-shaped member 3 are also arranged at substantially predetermined intervals at the joints, and the quality is improved. Can be.

An example of controlling the amount of movement of the preceding strip 2 based on the width of the subsequent strip 2 will be described with reference to FIG. A 200 mm wide strip is pulled out by a predetermined amount and cut at an angle of 60 degrees, and the overlap width is 2 mm.

When the preceding strip 2 is moved by 400 mm,
Since the end faces come into contact with each other without overlapping with the succeeding belt-shaped member 2, the overlap width can be set to 2 mm by reducing the moving distance by 4 mm to 396 mm. If the width of the band member 2 is always exactly 200 mm, the band member 2 may always be moved by a constant 396 mm. However, it is inevitable that the width of the band member 2 varies due to increase or decrease of the line speed. .

Now, assuming that the width of the succeeding belt-shaped member 2 becomes 199 mm, if the preceding belt-shaped member 2 is moved by 396 mm, the superimposed width is short by 1 mm. Therefore, a movement amount of 394 mm is calculated in order to secure a superimposed width of 2 mm from the width of 199 mm of the following belt-shaped member 2, and the preceding belt-shaped member 2 is moved.
May be controlled. Conversely, the width of the band-like member 2 is 2
When it becomes 01 mm, if the movement amount is 398 mm,
An overlapping width of 2 mm can be secured.

As described above, by controlling the amount of movement of the preceding band-like member 2 based on the width of the following band-like member 2, the overlapping width is always required even if the width of the band-like member 2 varies. Can be maintained at a constant width.

In the above embodiment, the width of the belt-shaped member is measured by imaging with a CCD camera. However, an embodiment in which the width is measured by another method is shown in FIG. Except for the measuring means, it is the same as the above embodiment, and the same members are denoted by the same reference numerals.

On both sides of the roller conveyor 20 for supplying the belt-shaped member 2 to the conveyor belt 13, guide members 51 and 52 for center positioning are arranged movably symmetrically with respect to the center line. , 52 are urged in a direction approaching each other, and are guided so as to sandwich the band-shaped member 2 therebetween.

By detecting the movement of the two guide members 51 and 52 by the potentiometer 53, the width of the belt-shaped member 2 can be measured. Based on the measurement result, the AC servomotor 15 is controlled to adjust the amount of movement of the conveyor belt 13 so that the overlap width related to the joining is kept constant, and the joining failure can be prevented.

Although the drawer of the above embodiment is a suction plate using an electromagnet, the strip member may be sucked by vacuum means for sucking air. A separate pressing and joining means is provided to press and join the overlapping portions of the belt-shaped members.

As the pressing and joining means, a roller having a sponge wound in the width direction is provided above and below the conveyor belt 13 so as to be able to move up and down, and the belt-like members 2 and 2 having the edge portions overlapped are conveyed by the conveyor belt 13. At this time, there is a method of joining the overlapping portions by receiving the pressure of the roller.

[Brief description of the drawings]

FIG. 1 is a schematic plan view of the entire band-like member joining apparatus according to an embodiment of the present invention.

FIG. 2 is a side view of the belt conveyor.

FIG. 3 is a view taken in the direction of the arrow III in FIG. 1;

FIG. 4 is an explanatory view showing a state of joining of belt-shaped members.

FIG. 5 is a specific example showing a state of joining of the belt-shaped members.

FIG. 6 is a schematic plan view of a bonding apparatus according to another embodiment.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Joining apparatus, 2, 3 ... Strip member, 4 ... Steel cord, 10 ... Belt conveyor, 11, 12 ... Rotating roll, 13 ... Conveyor belt, 15 ... AC servomotor, 16 ... Timing belt, 20 ... Roller conveyor, 21 ... roller, 25 ... cutting means, 26 ... cutter, 27 ... cylinder, 30 ... drawing device, 31 ...
Suction plate, 32 ... Receiving plate, 35 ... Fluorescent lamp, 36 ... CCD camera, 5
1, 52 ... guide member, 53 ... potentiometer.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification code FI Theme coat ゛ (Reference) B29L 30:00

Claims (5)

[Claims] 1. A predetermined amount of a band-shaped member is supplied on a conveyor from a fixed position on the side in a predetermined direction, the band-shaped member is cut, and the cut band-shaped member is moved on the conveyor, and is continuously supplied. In the joining method of the band-shaped members in which the edge of the band-shaped member in the row is superimposed on the moved preceding band-shaped member and the superposed portion is sequentially joined, the width of the band-shaped member supplied on the conveyor is measured. A method for joining belt-like members, characterized in that the amount of movement of the conveyor is controlled based on the measured values to adjust the overlap width of the preceding belt-like member and the following belt-like member to be substantially constant. 2. A conveyor for moving a belt-like member, supply means for supplying a predetermined amount of the belt-like member from a fixed position on the side in a fixed direction, and immediately before the conveyor for supplying the belt-like member of the supply means. Cutting means provided on the conveyor, pressing and joining means for pressing and joining the overlapping portion of the preceding band-shaped member and the succeeding band-shaped member on the conveyor, and the band-shaped member provided near the cutting means and supplied. A width length measuring means for measuring a width, and a control means for controlling the drive of the conveyor, the supply means, the cutting means, and the pressing and joining means to join a series of band-shaped members, wherein the control means, By inputting the measurement signal of the width length measuring means and controlling the amount of movement of the conveyor based on the measurement value of the measurement signal, the overlap width between the edge portions of the preceding belt member and the succeeding belt member is substantially reduced. Constant adjustment Characteristic band-shaped member joining device. 3. The apparatus according to claim 2, wherein said supply means supplies the belt-like member obliquely from a fixed position onto the conveyor. 4. The width measuring device according to claim 2, wherein the width member supplied by the supply device is photographed by a camera, and the photographed image is analyzed to measure the width of the band member. Or the joining device of the belt-shaped member according to claim 3. 5. The supply means includes a pair of guide members for guiding the band-shaped member so as to sandwich the band-shaped member from both sides, and the width length measuring means measures a distance between the pair of guide members and measures a width of the band-shaped member. The apparatus for joining strip-shaped members according to claim 2 or 3, wherein the measurement is performed.