JP3046512B2 - Blade changing hand of blade changing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a blade changing hand of a blade changing device which takes out or mounts a blade part for positioning a blade on a blade axis of a slitter equipment for slitting a metal band.

[0002]

2. Description of the Related Art As shown in FIG.
Blade axes 4A and 4B are vertically arranged between the fixed stand 2 and the movable stand 3, and these blade axes 4A and 4B
Is equipped with a blade 5. Blade axes 4A and 4B
Are fitted on a drive shaft 6 and a driven shaft 7 respectively arranged on the fixed stand 2 and the movable stand 3 so as to be rotatable. Geared motor 8 installed on fixed stand 2
The operation of the worm 9 and the worm wheel 10,
The positions of the vertically arranged blade shafts 4A and 4B are adjusted via the gears 11A and 11B, and an appropriate gap is set between the blades 5 of the blade shafts 4A and 4B. By continuously passing a metal band (not shown) between the blade shafts 4A and 4B, the metal band is multi-cut into a predetermined slit width or side-trimmed.

As shown in FIG. 6, on the blade shafts 4A and 4B, a number of spacers 12 corresponding to the slit width are provided between the plurality of blades 5, and a cushioning material (rubber) is provided on the spacers 12. A ring or a MC nylon 13) is applied in a laminated manner, and the blade 5 is positioned using a collar 14 and a nut 15. The spacer 12, the cushioning material 13 and the collar 14 are configured as a blade part.

Therefore, in order to change the slit width of the metal strip, the blade 5, the spacer 1
2. It is necessary to remove the cushioning material 13 and the like, and attach the blade 5, the spacer 12, the cushioning material 13 and the like in a new arrangement state.

Conventionally, as shown in FIG. 4, the blade changing operation is performed by first operating a geared motor 16 to move the movable stand 3 relative to the frame 17 in the axial direction of the blade shafts 4A and 4B. The blade shafts 4A and 4B are detached from the driven shaft 7 of the movable stand 3 and brought into a cantilever state. Next, by operating a crane (not shown), the cantilevered cutter shafts 4A and 4B are lifted, removed from the drive shaft 6, and set on the mounting shaft 19 of the tool rest 18 shown in FIG.
Then, the blade 5, the spacer 12, the cushioning material 13 and the like are removed from each of the blade shafts 4A and 4B set on the mounting shaft 19, and the blade shafts 4A and 4B are arranged in a new arrangement state.
The blade 5, the spacer 12, the cushioning material 13 and the like are attached again to complete the blade replacement work.

However, in the conventional blade changing operation as described above, when the slitter equipment 1 is for slitting a thick metal band, the weight of the blades 5 and the spacers 12 of the blade shafts 4A and 4B is reduced. For example, the weight is about 30 to 50 kg per sheet, and the blade replacement work becomes heavy labor. Also, in order to ensure the shear quality of the product, the clearance between the cutter shaft 4A or 4B and the cutter 5 is set to, for example, about 50-100 μm or less. The surface may be scratched.

Therefore, as in the invention described in Japanese Patent Application Laid-Open No. 4-183519, a frame structure is provided at the end of the arm of the main body frame, and the frame structure is provided with a suction pad, a back pressing portion and a holding portion. A knife device has been proposed. In this blade changing device, the arm is moved in the horizontal direction or the vertical direction, the blade or the spacer is sucked by the suction pad to move a predetermined amount on the blade shaft, and then the blade or the spacer is moved to the back pressing portion and The blades and spacers are exchanged by holding and moving at the holding section.

[0008]

However, the blade changing device described in the above publication has a structure in which the frame structure is provided with a suction pad, a back pressing portion, and a holding portion, and these are individually operated. However, the frame structure has a complicated structure, and the cost increases.

Further, as shown in FIG.
In the figure, the suction area is small, and an appropriate number of them are provided on the end plate 21 of the frame structure in the circumferential direction. For this reason, suction of the blade 5 and the spacer 12 by the suction pad 20 becomes insufficient, and the reliability of the blade changing device may be reduced.

The present invention has been made in view of the above circumstances, and reliably and safely holds a blade replacement part for positioning a blade on a blade axis of a slitter facility, thereby improving the reliability of the blade replacement device. An object of the present invention is to provide a blade replacement hand of a blade replacement device that can improve the efficiency of blade replacement work.

[0011]

According to a first aspect of the present invention, there is provided a blade changing device for a blade changing device for attaching and detaching a blade part for positioning a blade on a blade shaft of a slitter facility from the blade shaft. A front plate is provided on the front surface of the main body, and the front plate has a plurality of elongated slit grooves extending in a circumferential direction of the hand main body and a plurality of short and long slit grooves.
Joints are formed alternately, and the long slit groove is
Set to occupy a longer area in the circumferential direction than the joint
At the same time, a seal member is mounted around the slit groove in the front plate , and the slit groove is connected to a vacuum generator so that the blade component can be suction-held on the front surface of the hand body.

According to a second aspect of the present invention, a clamp claw is provided on a front surface of the hand main body of the first aspect so as to be able to advance and retreat in an axial direction of the hand main body. Can be pinched.

[0013]

Therefore, according to the blade changing hand of the blade changing device according to the first aspect of the present invention, the slit groove connected to the vacuum generating device is provided on the front surface of the hand main body along the circumferential direction of the hand main body. Due to the formation, the negative pressure generated by the vacuum generator can be applied to a wide area of the hand main body through the slit groove. Therefore, the suction force based on the negative pressure is increased, and the blade component can be suctioned and held safely and reliably. Therefore, the reliability of the blade changing device can be improved, and the efficiency of the blade changing operation can be improved.

According to the second aspect of the present invention, the clamp pawl which can be moved in the axial direction of the hand main body is provided on the front surface of the hand main body. The blade part can also be held by pinching the tool body with the hand body. As a result, the blade component can be held more safely and reliably, the reliability of the blade changing device can be increased, and the efficiency of the blade changing operation can be improved.

[0015]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a front view showing one embodiment of a blade replacement hand of the blade replacement device according to the present invention. FIG. 2 is a sectional view taken along the line II-II of FIG. FIG. 3 is a cross-sectional view showing an operation state of the blade changing hand of FIG. In this embodiment, the same parts as those in the conventional example are denoted by the same reference numerals, and description thereof will be omitted.

The blade changing hand 30 shown in FIG. 1 is installed at the end of an arm of an articulated robot or a dedicated machine (not shown) to constitute a blade changing device. These robots and special-purpose machines are configured as existing technologies that can vertically move and horizontally rotate an arm.

The blade replacement hand 30 has a ring-shaped front plate 33 fixed to a front surface 32 (FIG. 2) of a ring-shaped hand body 31 and a clamp mechanism 34 disposed at an appropriate position in the circumferential direction of the hand body 31. It is.

A vacuum chamber 35 is formed in the hand main body 31 over the entire circumference thereof. The vacuum chamber 35 is opened on the front surface 32 side of the hand main body 31, and the opening is covered by the front plate 33. A vacuum chamber 35 is provided on the front plate 33.
A plurality of long slits 36 and a plurality of short joints
The hook portions are formed alternately . As shown in FIG. 1, the slit grooves 36 extend in the circumferential direction of the front plate 33, and a plurality of, for example, three slit grooves 36 are formed in the circumferential direction of the front plate 33.
And the slit groove 36 is formed in the circumferential direction from the short joint portion.
Set to occupy a long range. Front plate 33
A seal member such as a ring-shaped seal rubber 37 is mounted on each of the inside and outside of the slit groove 36.

The vacuum chamber 35 is connected via a tube 38 to
It is connected to a vacuum blower 39 as a vacuum generator. Accordingly, the operation of the vacuum blower 39 causes the vacuum blower 39 to operate.
When the inside of the slit groove 36 is set to a negative pressure (about -100 mmHg), and the cushioning material 13 and the thin spacer 12 which are weak in contact with the sealing rubber 32, the slit 12 and the buffer An adsorbing force for adsorbing the material 13 is generated.

As shown in FIG. 2, the clamp mechanism 34 includes a swing cylinder device 40, a connecting arm 41, and a clamp claw 42. The swing cylinder 40 is bolted to the hand main body 31 via a support bracket 43. One end of a connection arm 41 is connected to the tip of a piston rod 44 of the oscillating cylinder device 40, and clamp claws 42 are provided at multiple ends of the connection arm 41.

The oscillating cylinder 40 is arranged so that its axis is parallel to the axis of the hand main body 31, and can move in the axial direction while rotating the clamp claw 42. That is, the oscillating cylinder device 40 moves backward while rotating the clamp claw 42 in the direction of the arrow A in FIG. 1 to bring the clamp claw 42 closer to the front plate 33. In addition, the swing cylinder device 4
0 moves forward while rotating the clamp claw 42 in the direction of arrow B in FIG.
Move away from 3. When the swing cylinder device 40 is retracted,
The spacer 1 is provided between the clamp claw 42 and the front plate 33.
2 or the cushioning material 13 can be sandwiched.

In the clamp claw 42, a claw piece 45 is screwed to a pin 46, and the pin 46 is connected to the connecting arm 41.
Of the connecting arm 41 and the claw piece 4
5 and a coil spring 48 is interposed. The pin 46 is provided slidably in the axial direction of the hand main body 31 with respect to the through hole 47. Therefore, the clamp claw 42
When the pawl piece 45 comes into contact with the spacer 12 or the cushioning material 13 when the swing cylinder 40 is retracted, the coil spring 48
This absorbs the impact of the contact.

The blade replacement hand 30 constructed as described above
Since the shape and specifications of the spacers 12 and the cushioning materials 13 are variously different, several types are prepared with a size suitable for the respective spacers 12 and the cushioning materials 13.
Reference numeral 49 in FIG. 1 is a mounting bracket for mounting the blade changing hand 30 to an arm of a robot or a dedicated machine.

Next, the operation of the blade changing hand 30 will be described.
As shown in FIG. 3, a plurality of blades 5 and spacers 12 are fitted to the blade shaft 4A or 4B as described above, and a cushioning material 13 is fitted to the spacers 12. There are many thin spacers among the spacers 12. The blade replacement hand 30 operates the vacuum blower 39 to cut the side surfaces of the thin spacer 12 and the weak cushioning material 13 into the slit grooves 36.
In this suction state, the tool moves in the axial direction of the blade shaft 4A or 4B, and the thin spacers 12 and the cushioning material 13 having a weak waist are removed or attached one by one from the blade shaft 4A or 4B.

When the thin spacer 12 has a thickness of about 20 mm or less, only the suction action by the slit groove 36 may be used. However, when the thin spacer 12 has a thickness of about 20 mm or more, the swinging of the clamp mechanism 34 is performed. By operating the cylinder device 40 backward, the thin spacer 12 is sandwiched between the clamp claw 42 and the front plate 33, and the thin spacer 12 is held together with the suction force by the slit groove 36. Thus, the blade replacement hand 30 is moved in the axial direction of the blade shaft 4A or 4B, and the thin spacer 1 having a thickness of about 20 mm or more is obtained.
2 is removed or attached from the cutter shaft 4A or 4B.

The above-mentioned blade changing operation is performed by sliding the movable stand 3 of the slitter equipment shown in FIG.
And 4B may be carried out in a cantilever state, or as shown in FIG. 5, after the cutter shafts 4A and 4B of the slitter equipment 1 are set on the tool rest 18.

According to the above embodiment, the slit groove 36 connected to the vacuum blower 39 via the vacuum chamber 35 is formed in the front plate 33 of the hand body 31 along the circumferential direction of the front plate 32. Thus, the negative pressure generated by the vacuum blower 39 can be applied to a wide area of the front plate 33 through the slit groove. For this reason,
The suction force based on the negative pressure is increased, and compared with the suction pad 20 having a small suction area shown in FIG.
And the cushioning material 13 with a weak waist can be suctioned and held safely and reliably. As a result, the reliability of the blade changing device can be improved, and the efficiency of the blade changing operation can be improved.

Further, the clamp claw 42 of the clamp mechanism 34 which can advance and retreat in the axial direction of the hand main body 31 is
, The heavy spacer 12 can be held not only by the attraction force of the slit groove 36 but also by the clamping of the clamp claw 42 and the front plate 33 of the hand body 31. As a result, the heavy and thin spacer 12 can be held more safely and reliably, the reliability of the blade changing device can be increased, and the efficiency of the blade changing operation can be improved.

[0029]

As described above, according to the blade replacement hand of the blade replacement device according to the present invention, the blade replacement component for positioning the blade in the tool rest of the slitter equipment is securely and safely held, and the blade replacement device is provided with the blade replacement device. The reliability can be improved, and the efficiency of the blade changing operation can be improved.

[Brief description of the drawings]

FIG. 1 is a front view showing one embodiment of a blade replacement hand of a blade replacement device according to the present invention.

FIG. 2 is a sectional view taken along line II-II in FIG.

FIG. 3 is a sectional view showing an operation state of the blade changing hand of FIG. 1;

FIG. 4 is a sectional view showing a slitter facility.

FIG. 5 is a front view in which a part of a tool shaft installed on a blade replacement table is cut away.

FIG. 6 is a cross-sectional view showing the blade axis of FIGS. 4 and 5;

FIG. 7A is a front view of a frame structure in a conventional blade changing device, and FIG. 7B is a front view of FIG. 7A.
It is sectional drawing which follows the VIIB-VIIB line.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Slitting equipment 4A, 4B Blade axis 5 Blade 12 Spacer 13 Buffer material 30 Blade replacement hand 31 Hand body 33 Front plate 34 Clamp mechanism 35 Vacuum chamber 36 Slit groove 37 Seal rubber 39 Vacuum blower 40 Oscillating cylinder device 42 Clamp claw

────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yutaka Takemoto 1-1, Kawasaki-cho, Akashi-shi, Hyogo Kawasaki Heavy Industries, Ltd. Inside the Akashi factory (56) References JP-A-4-183519 (JP, A) Hei 6-39969 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) B23D 35/00 B23D 19/06 B25J 15/06 B26D 1/24

Claims (2)

(57) [Claims] 1. A blade replacement hand of a blade replacement device for mounting and removing a blade part for positioning a blade on a blade axis of a slitter facility from the blade axis, wherein a front plate is provided on a front surface of a ring-shaped hand body ,
The front plate has a plurality of circumferentially extending hand bodies .
A slot- like slit groove and a plurality of short joints are formed alternately, and the slot-like slit groove extends in the circumferential direction from the short joint.
And occupy a long area.
A seal member is mounted around the slit groove in the plate , and the slit groove is connected to a vacuum generating device so that the blade component can be suction-held on a front surface of the hand main body. Blade replacement hand. 2. The hand tool according to claim 1, wherein a clamp claw is provided on a front surface of the hand body so as to be able to advance and retreat in an axial direction of the hand body, so that the blade part can be held between the hand body and the front surface. The blade replacement hand of the blade replacement device.