JPH0763781B2 - Blank carrier - Google Patents

Description

TECHNICAL FIELD The present invention relates to a blank carrying device. In particular, the present invention relates to a blank conveying device that delivers blanks taken out one by one by a destack feeder to a feed bar of a transfer press.

[Prior Art] Between the blank take-out position of the destack feeder and the position of delivering the blank to the feed bar of the transfer press, a blank carrying device is usually provided as an intermediate carrying means.

As a conventional blank conveying device, there is known a device that divides a distance between a blank take-out position and a position where a blank is delivered to a feed bar into equal parts, and conveys these as a one-pitch conveying stroke. This is because the moving body is equipped with grip jaws and a suction tool for gripping the blank for each transfer stroke, and the moving body is reciprocated by the transfer stroke to transfer the blank at the blank take-out position by one transfer stroke. And finally, it is a structure to deliver to the feed bar.

Recently, in order to accommodate blanks of various shapes, it is known that grip jaws for holding the blanks, suction tools, and the like can be positionally adjusted in the width direction orthogonal to the conveying direction of the blanks.

[Problems to be Solved by the Invention] However, in the conventional one, there is a problem that it takes a long time to adjust the position of the grip jaws in the width direction because the operator manually performs the adjustment.

Therefore, in order to automate these operations, it is conceivable to mount a drive source for adjusting the position of the grip jaws in the width direction on the moving body. However, in this case, the load applied to the moving body is increased correspondingly, and there are many problems in the influence of the vibration from the drive source and the cable processing.

An object of the present invention is to solve the above-mentioned conventional problems and to provide a blank carrying device capable of quickly adjusting the position of the grip jaws in the width direction.

[Means for Solving the Problems] Therefore, in the present invention, a movable body that is reciprocally movable in the conveyance direction of the blank and a width direction orthogonal to the reciprocating direction of the movable body in the movable body. A pair of grip jaws that are reciprocally provided to clamp the blank, a screw shaft that reciprocates each grip jaw in the width direction and that has an engaging body at an end, and the moving body of the screw shaft at a predetermined position. A driving body provided on the side of the machine body corresponding to the engaging body and engageable with the engaging body, a pressing means for pressing the driving body against the engaging body when the moving body is moved to a predetermined position, and the pressing means. And a rotating unit that rotates the drive body when the drive body is pressed by the engagement body.

[Operation] When the moving body is moved to a predetermined position, the pressing means is operated to press the driving body against the engaging body. When the rotating means is operated in this state, the driving body engages with the engaging body to rotate the screw shaft, so that the grip jaw is moved in the width direction. That is, the distance between the pair of grip jaws in the width direction is adjusted. After that, if the driving body is removed from the engaging body, the blank can be conveyed.

Therefore, since the pressing means and the rotating means for adjusting the position of the grip jaws in the width direction are provided on the machine body side, that is, not on the moving body side, the load applied to the moving body is not increased and the vibration is prevented. The position of the grip jaws in the width direction can be quickly adjusted without any problem of cable handling.

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings.

FIG. 6 shows the front of this embodiment. In the figure,
A blank supply device 2 is installed near one side surface of the transfer press 1. The blank supply device 2 sequentially pushes the stacked blanks 3 upward from below with a shift cylinder 4, separates the uppermost blanks 3 one by one with a magnet type separating device 5, and then positions them above the blanks 3. It is adsorbed to the adsorption tool 7 of the cylinder 6 and taken out upward. The cylinder 6 is vertically supported by a frame 8 provided on one side surface of the press 1.

Two guide grooves 11 are provided in the lower part of the frame 8 along the conveyance direction of the blank 3 (left and right direction in FIG. 6), and a movable body 13 reciprocates in both guide grooves 11 via rollers 12. Freely, that is, reciprocally movable in the conveying direction of the blank 3.

A connecting member 14 is fixed to the upper surface of the moving body 13. The connecting member 14 includes a moving body 13 through a pair of sprockets 15 and 16.
Is connected to a chain 17 provided in parallel with the reciprocating direction of. The other sprocket 18 provided coaxially with the sprocket 15 on the rear side is transmitted through a rotary chain 20 from a motor 19 capable of normal and reverse rotation. Therefore, the forward / reverse rotation of the motor 19 causes the moving body 13 to perform the advance / return operation. The stroke of the advance / return operation can be changed by the rotation angle of the motor 19, but here, the distance from the blank supply position B of the cylinder 6 to the position C where the blank 3 is delivered to the feed bar is divided into four equal parts. Is set to S.

Also, as shown in FIG. 7, on the rear end surface of the moving body 13, there is provided a guide rail 22 having guide grooves 21 on the upper and lower sides along the width direction orthogonal to the reciprocating direction of the moving body 13. Installed. The guide rail 22 has the above-mentioned upper and lower guide grooves.
A pair of left and right grab jaws 23A, which slidably engage with 21
23B is provided so as to be reciprocally movable in the width direction orthogonal to the reciprocating direction of the moving body 13. Gribe Joe 23A, 23B
The distance between the blank supply position B and the blank supply position B corresponds to the transport stroke S when the moving body 13 is in the advance position (state of FIG. 6). Each grip jaw 23A, 23B has a pair of upper and lower claws 25 that are opened and closed by the operation of the cylinders 24A, 24B.
Equipped with A and 25B. Therefore, the pair of grip jaws 23A, 23B
By adjusting the interval according to the width of the blank 3, both sides of the blank 3 can be held by the pair of grip jaws 23A and 23B.

The guide rail 22 also has grip jaws 23A and 23B.
Screw shafts 81A, 8 screwed with and having engaging bodies 82A, 82B on the outer ends
1B is supported in parallel with the guide groove 21. On the other hand, in a state where the moving body 13 is moved to the blank take-out position B, the screw shafts 81A, 81B are engaged with the respective engaging bodies 82A, 82B on the machine body side corresponding to the engaging bodies 82A, 82B. Width adjusting devices 91A and 91B for forcibly rotating the shafts 81A and 81B are provided.

Therefore, the engaging bodies 82A, 82B of the screw shafts 81A, 81B and the width adjusting device
A specific configuration with 91A and 91B will be described with reference to FIGS. Since the structure is left-right symmetrical here, the engagement body 82B of the screw shaft 81B on one side and the width adjusting device 91B will be described, and the description on the other side will be omitted.

In FIG. 1, a member 84 having internal teeth 83 is attached to the outer end of the guide rail 22 holding the screw shaft 81B, and the engaging body is attached to the outer end of the screw shaft 81B via a key 85. The 82B is mounted so as to be movable in the axial direction. A gear 86 that meshes with the inner teeth 83 is formed on the outer peripheral surface on the base end side of the engaging body 82B, and an engaging groove 87 is formed on the outer end surface.
Are formed. As shown in FIG. 2, the engagement groove 87 is formed in a linear shape having a constant width passing through the center of the screw shaft 81B. A spring 89 is interposed between the engaging body 82B and the bracket 88 holding the screw shaft 81B so as to bias the engaging body 82B in a direction in which the gear 86 of the engaging body 82B meshes with the internal teeth 83.

In the width adjusting device 91B, the moving body 13 has a blank take-out position B.
The driving body 100 arranged on the machine body side corresponding to the engaging body 82B of the screw shaft 81B in the state of being moved to
The pressing means 110 for pressing the engaging body 82B, the rotating means 120 for rotating the driving body 100 in the state where the driving body 100 is pressed by the engaging body 82B, the motor, the pressing means 110 and the rotating means 120 are controlled. And a control means 130 (see FIG. 5) for adjusting the distance between the pair of grip jaws 23A and 23B.

As shown in FIG. 3, the driving body 100 is provided with a projection 101 that fits into the engaging groove 87 on the end surface facing the engaging body 82B, and a plus-in hole 102 penetrates in the central axis direction. Has been formed.

The pressing means 110 includes a roller 11 on a rail 111 provided on the machine body.
The movable block 113 supported movably in the axial direction of the screw shaft 81B via the two, the movable block 113 and the driving body 10
A connecting member 114 for connecting 0 to each other, a cylinder 115 for moving the movable block 113 in the axial direction of the screw shaft 81B, and two proximity switches 11 for controlling the operation of the cylinder 115.
It is composed of 6,117. Connecting member 114 and driver 100
An elastic member 118 is interposed in the connecting portion. In the proximity switch 116, the driving body 100 comes into contact with the engaging body 82B and the engaging body 82B
The proximity limit switch 117 detects the forward limit position where the spring is pressed against the spring 89 to the position where it is disengaged from the internal teeth 83, and the backward limit position where the drive body 100 is separated from the engagement body 82B, and stops the operation of the cylinder 115. Output a signal.

The rotating means 120 includes a motor 121 fixed to the lower surface of the rail 111, and a spline shaft 123 integrally provided at the tip of an output shaft 122 of the motor 121 and meshing with a spline hole 102 of the driving body 100. Equipped with. In the middle of the output shaft 122,
A rotation angle detection device 124 for detecting the rotation angle of the motor 121 is attached. The rotation angle detecting device 124 is, as shown in FIG. 4, fixed to the output shaft 123 via a key, and a rotary body 126 having five notches 125 formed at its outer peripheral edge at equal intervals. The detector 127 is arranged so as to sandwich the outer peripheral edge and outputs the passage of the notch 125 as a pulse signal.

The control means 130, as shown in FIG. 5, is a setting device 131 for setting the widthwise interval between the pair of grip jaws 23A, 23B.
The rotation angle detecting device 124 and the control circuit 132 are included.
According to the flowchart of the figure, the motor 19, the pressing means 110
And controlling the rotating means 120. Note that these details will be described in the section of action according to the flowchart of FIG.

On the other hand, in the state of FIG. 6, the grip jaws 23A,
An elevating table 27 is provided at a position below 23B so as to be able to elevate and lower by the operation of a cylinder 28, and a magnet 29 is provided on the upper surface of the elevating table 27. As a result, when the pair of grip jaws 23A, 23B receives the blank 3 from the suction tool 7 of the cylinder 6 and moves to the advance position along with the moving body 13, the lifting table 27 is lifted by the operation of the cylinder 28. Here, a pair of grip jaws 23A, 23B
When the blank 3 is released, the blank 3 is attracted to the magnet 29 on the lifting table 27. After that, the lifting table 27 returns to the original position, while the grip jaws 23A and 23B are returned along with the moving body 13.

Further, an elevating body 33 is horizontally hung on the lower surface side of the moving body 13 via links 31 and 32. The link 31 has an upper end rotatably supported by the moving body 13 and a lower end slidably engaged in a long groove 34 formed horizontally in the elevating body 33. The link 32 has an intermediate portion rotatably supported by the moving body 13 and a lower end of the link 32.
A long groove 35 formed horizontally in 33 is slidably engaged. The upper end of the link 32 is connected to a piston rod of a cylinder 36 rotatably supported by the connecting member 14. The links 31 and 32 are connected by a horizontal connecting rod 37, and a shaft 38 is projectingly provided on the upper surface of the elevating body 33 between the links 31 and 32. The upper part of the shaft 38 is inserted into a hole 39 provided in the moving body 13 via a spherical bearing 40.
Therefore, when the cylinder 36 operates, both links 31 and 32 swing in conjunction with each other, so that the lifting body 33 moves up and down, that is, lifts.
To be down. At this time, a force in the moving direction of the moving body 13 acts on the lifting body 33, but the shaft 38 of the lifting body 33 causes the moving body 13 to move.
Since the movement in the moving direction is restricted, it can only move up and down.

The elevating body 33 includes a pair of frames 41 and 42 at the front and rear. Each frame 41, 42
As shown in FIGS. 7 and 8, the rack member 4 is
3, 44 and guide bars 45, 46 are respectively supported vertically and in a width direction orthogonal to the reciprocating direction of the moving body 13. A pair of left and right movable blocks 47A, 47B, 48A, 48B are movably provided on the rack member 43 and the guide bar 45 and the rack member 44 and the guide bar 46 facing each other in the vertical direction.

Between the movable blocks 47A, 48A facing each other in the front-rear direction and between the movable blocks 47B, 48B, screw shafts 49A, 49B are rotatably supported so as to be parallel to the reciprocating direction of the moving body 13 and rotatable. Each screw shaft 49A, 49B has three screw parts 49A with different screw pitches.
1 to 49A3 and 49B1 to 49B3 are formed. Here, the thread pitch of the thread sections 49A2, 49B2 is twice the thread pitch of the thread sections 49A1, 49B1, and the thread pitch of the thread sections 49A3, 49B3 is 3 times.
Is doubled.

Bevel gears 50A, 50B are fixed to the rear ends of the screw shafts 49A, 49B. Bevel gears 52A and 52B, which are slidably engaged with respective spline shafts 51A and 51B orthogonal to the screw shafts 49A and 49B, are meshed with the bevel gears 50A and 50B. The bevel gears 52A, 52B are moved along the spline shafts 51A, 51B simultaneously with the movable blocks 47A, 47B by the contact plates 53A, 53B provided on the movable blocks 47A, 47B. Further, each spline shaft 51A, 51B, the rack member 43 in the frame 41.
Also, the guide bar 45 is rotatably supported in parallel and independently with respect to the axis of the guide bar 45, and the outer end thereof is projected to the outside of the frame 41. Therefore, when a handle or the like is attached to the protruding end of each spline shaft 51A, 51B and is rotated, the spline shaft 51A, 51B
51B rotating via a bevel gear 52A, 52B, 50A, 50B screw shaft 49
Since they are respectively transmitted to A and 49B, the screw shafts 49A and 49B can be independently rotated.

For each screw part 49A1 to 49A3, 49B1 to 49B3 of the screw shaft 49A, 49B,
The suction tool holding members 61A to 63A and 61B to 63B are screwed from the grip jaws 23A and 23B at intervals of the transport stroke S, respectively. Suction tool holding members 61A to 63A, 61B to 63 for each row
On both sides of the lower surface of B, a pair of left and right suction tools 64 are replaceably attached. In addition, the suction tool holding members 61A to 63 of each row
An engaging member 60 having a spline hole on the upper part of A, 61B to 63B
Is rotatably held. Spline shafts 65A, 65B that support the suction member holding members 61A to 63A, 61B to 63B movably and non-rotatably in the axial direction of the screw shafts 49A and 49B penetrate through the engaging members 60 in each row. Has been done.

The spline shafts 65A, 65B are rotatably supported in parallel with the axis of the screw shafts 49A, 49B between the movable blocks 47A, 48A facing each other in the front-rear direction and between the movable blocks 47B, 48B. Therefore, when each of the screw shafts 49A and 49B is rotated, the suction tool holding members 61A to
Since 63A, 61B to 63B are restricted in rotation by the spline shafts 65A, 65B, they are moved along the axial direction of the screw shafts 49A, 49B. At this time, the amount of movement of the suction tool holding members 62A, 62B is twice the amount of movement of the suction tool holding members 61A, 61B, and the amount of movement of the suction tool holding members 63A, 63B is three times. Therefore, the distance from the pair of grip jaws 23A, 23B to the suction tool holding members 61A, 61B and the suction tool holding members 61A to 63A, 61B to 63 in each row.
The intervals between B are equal to each other.

Connecting members 71A, 71B are rotatably attached to the rear ends of the spline shafts 65A, 65B with respect to the spline shafts 65A, 65B, and the connecting members 71A, 71B are orthogonal to the spline shafts 65A, 65B. Separate screw shafts 72A and 72B are screwed together. Each screw shaft 72A, 72B is a spline shaft 5 which is provided in the frame 41.
It is rotatably supported in parallel and independently of the axes of 1A and 51B, and its outer end projects outside the frame 41. Therefore, when a handle or the like is attached to the projecting ends of the screw shafts 72A and 72B and rotated, the connecting members 71A and 71B screwed to the screw shafts 72A and 72B.
Moves in the axial direction of the screw shafts 72A, 72B, that is, in the width direction of the blank 3, so that the suction tool holding members 61A to 63A, 61B in each row.
The width direction position of ~ 63B can be adjusted independently.

Further, pinions 73A, 73B, 74A, 74B screwed to the rack members 43, 44 are fixed to both ends of each spline shaft 65A, 65B. Therefore, by turning the screw shafts 72A, 72B,
When the connecting members 71A, 71B try to move in the axial direction of the screw shafts 72A, 72B, the pinions 73A, 73B, 74A, 74B move the rack members 43,
Since it rotates while screwing against 44, each spline shaft
It is possible to equalize the movement amounts on both end sides of the 65A and 65B.

Next, the operation of this embodiment will be described.

First, according to the width dimension of the blank 3, the gap between the pair of grip jaws 23A and 23B and the suction tool holding members 61A to 63 in each row.
Adjust the intervals of A and 61B to 63B respectively.

To adjust the distance between the pair of grip jaws 23A and 23B,
A pair of grip jaws 23A, 23 is provided on the setting device 131 of the control means 130.
Set the B interval. Then, the control circuit 132 executes the process according to the flowchart shown in FIG.

First, the motor 19 is driven to position the moving body 13 at the blank take-out position B. Next, the pressing means 1 of the width adjusting devices 91A and 91B
10, the cylinder 115 is operated. Then, the movable block 113 moves leftward in FIG. 1 along the rail 111. After the driving body 100 comes into contact with the engaging bodies 82A and 82B, the engaging bodies 82A and 82B are pushed further against the spring 89, and the engaging body 8
The gears 83 of 2A and 82B are disengaged from the inner teeth 83. At this time, the operation of the cylinder 115 is stopped by the signal from the proximity switch 116.

Then, the motor 121 of the rotating means 120 is rotated. motor
When 121 rotates, the rotation angle detection device 124 outputs a pulse corresponding to the rotation angle of the motor 121, and the driving body 100 meshed with the spline shaft 123 is rotated. When the driver 100 rotates at least 1/2 turn, the protrusion 101 of the driver 100
Engage with the engaging groove 87 of the engaging bodies 82A, 82B, so that the engaging bodies 82A, 82B are rotated together with the driving body 100 thereafter. Each engaging body 82
When the A and 82B rotate, the screw shafts 81A and 81B rotate, so that the pair of grip jaws 23A and 2B are rotated as the screw shafts 81A and 81B rotate.
3B is moved in the width direction.

Here, the number of pulses from the rotation angle detection device 124 is counted, and when the count value matches the interval set by the setter 131,
The motor 121 of the rotating means 120 is stopped. Then, the operation of the cylinder 115 of the pressing means 110 is released. That is, the cylinder 115 is operated in the opposite direction. Then, the driving body 100 moves to the right in FIG. 1, and accordingly, the engaging body 82 moves.
A and 82B move to the right in FIG. 1 by the action of the spring 89, and mesh with the external teeth 83. As a result, the engaging bodies 82A, 82B
Rotation of the screw shafts 81A and 81B is restricted, so that the distance between the pair of grip jaws 23A and 23B is maintained.

On the other hand, the suction tool holding members 61A to 63A and the suction holding members 61B to 6
In order to adjust the distance from the 3B side, when the two screw shafts 72A, 72B are respectively rotated, the spline shafts 65A, 65B move in parallel in a direction orthogonal to the axis, which allows the suction tool holding member to be moved. The intervals of 61A to 63A and 61B to 63B are made to correspond to the width of the blank 4. At this time, since the movements of the spline shafts 65A, 65B on both ends are synchronized by the pinions 73A, 74A and 73B, 74B and the rack members 43, 44, the movement amount does not deviate.

In this way, after adjusting the distance between the pair of grip jaws 23A and 23B and the distance between the suction tool holding members 61A to 63A and 61B to 63B in each row, the blank 3 is conveyed.

In the state shown in FIG. 6, the cylinder 6 is lowered to suck the blank 3 onto the suction tool 7, and then the cylinder 6 is raised. At the same time, the motor 19 is driven to return the moving body 13 by the conveying stroke, and the pair of grip jaws 23A and 23B are returned.
Both sides of the blank 3 are clamped by.

After that, when the moving body 13 is advanced by the conveyance stroke by the reverse driving of the motor 19, the pair of grip jaws 23
The broken 3 sandwiched by A and 23B is moved to above the rising table 27. Here, after raising the lifting table 27,
When the grip jaws 23A and 23B are opened, the blank 3 supported thereby is attracted to the magnet 29. After that, while lowering the elevating table 27, the operation of transferring the blank 3 received from the suction tool 7 of the cylinder 6 to the elevating table 27 is repeated in association with the advance / return operation of the moving body 13.

On the other hand, the blank 3 on the lifting table 27 is associated with the advance / return operation of the moving body 13 and the lifting / lowering operation of the lifting body 33, and the suction tool holding members 61A to 63A, 61B in each row.
~ 63B sequentially conveys by the conveying stroke and is delivered to the feed bar of the transfer press.

That is, when the moving body 13 is returned while the lifting body 33 is in the lifted state, the first suction tool holding members 61A and 61B are positioned on the lifting table 27. Here, when the lifting / lowering body 33 is moved down by the operation of the cylinder 36, the blank 3 on the lifting / lowering table 27 is sucked by the first suction tool holding members 61A, 61B. After that, the lifting and lowering body 33 is lifted by the operation of the cylinder 36.

In this state, the advance operation of the moving body 13 causes the blank 3 sucked by the first suction holding members 61A and 61B to be transported by the transport scroll and transported to the next stage. When the blank 3 is transported to the next stage,
The elevating body 33 is lowered again by the operation of the cylinder 36, and the blank 3 sucked by the first suction tool holding members 61A and 61B is transferred to the next stage. After this, lift 33
It is lifted by the operation of 36 and returned to the initial state.

Similarly, the blank 3 delivered onto the first stage is successively conveyed to the second and third stages by the second and third suction tool holding members 62A, 62B, 63A and 63B, and finally the feed bar. To be delivered to.

By the way, when changing the position C for delivering the blank 3 to the feed bar in the conveying direction of the blank 3, the spline shafts 51A and 51B are rotated. Then, the spline shaft 51
A, 51B rotating bevel gears 52A, 50A, 52B, 50B via screw shaft
Since it is transmitted to 49A, 49B, the suction tool holding member 6 screwed to the screw parts 49A1 to 49A3, 49B1 to 49B3 of the respective screw shafts 49A, 49B.
1A to 63A and 61B to 63B are moved in the axial direction of the screw shafts 49A and 49B. Therefore, in this way, the grip jaws 23A, 23A
The distance from B to the suction tool holding members 61A and 61B and the distance in the transport direction between the suction tool holding members 61A to 63A and 61B to 63B in each row are divided into four equal intervals from the blank take-out position B to the delivery position C. Set to the specified interval. Further, the transport stroke of the motor 19 may be set to the above interval.

Therefore, according to this embodiment, the pair of grip jaws 23A,
The screw shafts 81A and 81B for reciprocating the 23B in the width direction are engaged with the engaging bodies 82A,
On the other hand, the screw shaft is provided by engaging with the engaging bodies 82A and 82B.
Since the width adjusting devices 91A, 91B for rotating 81A, 81B are provided on the machine body side, without increasing the load applied to the moving body 13,
In addition, it is possible to automatically adjust the widthwise interval between the pair of grip jaws 23A and 23B without problems such as vibration and cable treatment.

Further, the width adjusting devices 91A and 91B are engaged with the engaging bodies 82A and 82B, the driving body 100, the pressing means 110, the rotating means 120, and the control means 1.
Since it is composed of 30, the conveyance of the blank 3 is not always hindered. Moreover, since the control means 130 stops the rotating means 120 and releases the pressing means 110 when the widthwise interval between the pair of grip jaws 23A and 23B reaches the set interval, the pair of grip jaws is released. It is possible to automatically and accurately adjust the widthwise intervals of 23A and 23B to the set intervals. Further, the pressing means 11
When 0 is released, the gear 86 of the engaging bodies 82A, 82B meshes with the internal teeth 83 to restrict the rotation of the engaging bodies 82A, 82B, so that the gap in the width direction between the pair of grip jaws 23A, 23B is set. It can be held at the specified intervals.

Further, the suction tool holding members 61A to 63A side and the suction tool holding member 61B.
Since the width direction position on the ~ 63B side and the conveyance direction position of the blank 3 can be independently adjusted, the present invention can be applied to conveyance of irregularly shaped blanks and perforated blanks.

When adjusting the position in the width direction, use the spline shaft 65
Since it is sufficient to rotate the screw shafts 72A and 72B arranged orthogonal to the A and 65B, it is extremely simple. Moreover, since the pinions 73A, 73B, 74A, 74B are provided on both ends of the spline shafts 65A, 65B, respectively, and the rack members 43, 44 are meshed with the pinions 73A, 73B, 74B, there is no difference in the amount of movement on both ends. Can be translated.

Also, when adjusting the position in the transport direction, screw shafts 49A, 49A
Since it is sufficient to rotate the spline shafts 51A and 51B arranged orthogonal to B, it is extremely simple.

In the above embodiment, a pair of grab jaws 23A and 23B are used.
The screw shafts 81A and 81B which are respectively screwed into the screw shafts are provided, and these are rotated by different width adjusting devices 91A and 91B, respectively. A single width adjusting device may be used as long as the grip jaws 23A and 23B are screwed to each other and the pair of grip jaws are moved toward and away from each other by the rotation of the screw shaft.

[Effects of the Invention] As described above, according to the present invention, the distance between the pair of grip jaws in the width direction can be quickly adjusted according to the width of the blank.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows an embodiment of the present invention. FIG. 1 is a sectional view showing a width adjusting device, FIG. 2 is a front view showing an engaging body, and FIG. 3 is a driving body. 4 is a front view showing the rotation angle detecting device, FIG. 5 is a block diagram showing the control means, FIG. 6 is a sectional view showing the whole, and FIG. 7 is a bottom view showing the moving body portion. 8
FIG. 9 is a perspective view showing the moving mechanism of the suction tool holding member, and FIG. 9 is a flowchart. 3 ... Blank, 13 ... Moving body, 23A, 23B ... Grip jaw, 81A, 81B ... Screw shaft, 82A, 82B ... Engaging body, 100 ... Driving body, 110 ... Pressing means, 120 ... Rotating means.

Claims (1)

[Claims] 1. A moving body provided so as to be reciprocally movable in a blank carrying direction, and a blank provided so as to be reciprocally movable in a width direction orthogonal to the reciprocating direction of the moving body. A pair of grip jaws, a screw shaft that reciprocates each grip jaw in the width direction and has an engaging body at an end, and the movable body is provided at a predetermined position on the machine body side corresponding to the engaging body of the screw shaft. A driving body that is engageable with the engaging body, a pressing means that presses the driving body against the engaging body when the moving body is moved to a predetermined position, and the driving body is pressed against the engaging body by the pressing means. And a rotating means for rotating the driving body in the opened state.