JPS6112780B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a method for cutting, creasing, etc. in the direction of movement of a continuously flowing web passed between a pair of parallel shafts. The present invention relates to a tool positioning device that can numerically control the positioning of a plurality of pairs of attached tools.

The above device has been used for positioning variable displacement tools such as the slit roll and scorer roll in the slit scorer device, but conventional devices of this type send a large number of tools one pair at a time using a feed screw. Therefore, it took a considerable amount of time to position all the tools. Furthermore, since the tool position was determined indirectly by detecting the rotation angle of the screw, there was a large error in positioning accuracy due to play in the feed screw and related mechanical parts.

An object of the present invention is to provide a tool positioning device that can move a large number of tools simultaneously and quickly position the tools.

Another object of the present invention is to provide a tool positioning device that enables direct tool positioning by displacing the linear position of a tool feeding means and improves positioning accuracy.

Further objects, features and benefits of the present invention will become apparent from the following description of each embodiment with reference to the accompanying drawings.

An embodiment of the present invention includes six pairs of cutting tools 52 attached to a pair of parallel shafts 51 of a slitting scorer device 5 for cutting and creasing a corrugated cardboard web W that is continuously fed in its traveling direction. An example of a tool positioning device for ten pairs of creasing tools 53 will be described below.

The tool positioning device according to the present invention includes a guide member 1, a self-propelled device 2, a moving device 3, and a positioning numerical control device 4.

The guide members 1 are provided parallel to the pair of rotatable shafts 51 of the slit scorer device 5, and have both ends fixed to the plate members 31 of the moving device 3, respectively, and one pair on each of the upper and lower surfaces of the shafts 5.
A rack 11 parallel to 1 is fixed. Sixteen self-propelled devices 2 are prepared, which is the logarithm of the tools 52 and 53, and each self-propelled device 2 is connected to the rack 11 of the guide member 1.
A frame 22 rotatably supports the pinion 21, and a drive motor 23 attached to the frame 22 and drives the pinion 21. Furthermore, the frame 22 is fitted onto the guide member 1 .

One of the two pinions 21 meshing with the pair of racks 11 on the upper surface of the guide member 1 is connected to the shaft 211.
The other is fixed to a shaft 213, and the shaft 211 is supported by the frame 22 via its bearing member 212, and the other is fixed to a shaft 213, which is supported by the frame 22 through its bearing member 212.
It is supported by the frame 22 via 4. Axis 2
11 and 213 are connected by a joint 215 with the two pinions 21 turned in opposite directions and meshed with the corresponding racks 11 without any gaps. The two pinions 21 that mesh with the pair of racks 11 on the lower surface of the guide member 1 are also supported by the frame 22 and connected to each other like the two upper pinions. As shown in FIG. 3, the upper and lower bearing members 212 are in slidable contact with one of the racks 11 and limit the movement of the frame 22 to the right in the figure. The member 214 is in slidable contact with the other rack 11 and limits movement of the frame 22 to the left in the drawing.

A bevel gear 216 is fixed to each of the upper and lower pinion shafts 213.
17 are engaged. Shaft 2 of two bevel gears 217
18 are connected by a joint 219, with two bevel gears 217 turned in opposite directions and meshed with the corresponding bevel gears 216 without any gaps.
Each bevel gear shaft 218 is supported by the frame 22 via a bearing member 220. In order to allow adjacent self-propelled devices 2 to approach each other sufficiently, the drive motor 23 of one of the adjacent self-propelled devices 2 is
As shown by the solid line in the figure, the drive motor 23 of the other device is supported by the upper rear surface of the frame 22 and connected to the upper pinion shaft 213, and the drive motor 23 of the other device is connected to the frame 22, as shown by the phantom line in FIG. The pinion shaft 213 is supported by the lower part of the rear surface and connected to the lower pinion shaft 213. Furthermore, each self-propelled device 2 has a frame 22
The shifter 24 is supported at the front of the vehicle. As shown in FIG. 4, the shifter 24 has a plate member 241 that can fit into a groove 501 surrounding the circumferential surface of each head 50 of a corresponding pair of tools 52 or 53. Tool head 50
The groove 501 is formed on a sloped side surface or a tapered side surface, and the plate member 241 of the shifter 24 corresponding thereto also has a tapered shape that can fit into the groove 501 and come into close contact with it.

The moving device 3 includes plate members 31 fixed to both ends of the guide member 1, pinions 32 rotatably attached to each plate member 31, and a rack 33 meshing with each pinion 32. a frame 34 to which each rack 33 is fixed; two upper rollers 35 and one lower roller 36 rotatably attached to each plate member 31; Coro 35
and a rail member 37 disposed between the lower rollers 36 and with which these rollers can roll, and which is arranged between the rack 3
3, and the shifter 24 is attached to the shaft 5 along with the guide member 1 and the self-propelled device 2.
1 to fit the plate member 241 of the shifter 24 into the head groove 501 of the tool 52 or 53, or to disengage it from the fit.
A piston cylinder device 38 having a piston rod 381 connected to the plate member 31, and a piston cylinder device 39 having a piston rod 391 connected to the frame 34, the cylinder head of which is connected to the cylinder head of the device 38. frame 34
is attached to the main body frame (not shown) of the slitting scorer device 5.

An example of the positioning numerical control device 4 is shown in FIG. According to this example, the device 4 includes a linear position detector 41, a tool position setting command circuit 42, a tool position storage counter 43, a comparison control circuit 44, a drive motor control circuit 45, and a drive motor 23. The linear position detector 41 is connected to the arm 3 provided on the plate member 31, as shown in FIG.
41 and arranged parallel to the shaft 51, on which a magnetic scale is recorded, and a reader provided on the shifter 24 of each self-propelled device 2 as close as possible to the scale section 411. The head portion 412 includes the scale portion 4
11, and an amplifying section 413 that is provided corresponding to each head section 412 and amplifies the electrical signal from the corresponding head section 412. counter 43
is a circuit provided corresponding to each amplifying section 413 to count and store detection signals from the corresponding amplifying section 413.

The command circuit 42 outputs the target position (command value) of each tool read from the punched tape or corner, digital switch, memory, keyboard, etc.
This is a circuit that outputs the signal as an electric signal to a later-described comparison circuit 441 corresponding to each tool over time. The comparison control circuit 44 includes a comparison circuit 441 and a control circuit 442.
The comparison circuit 441 receives the command value of the target position of the corresponding tool from the command circuit 42, and also receives the detected value of the current position of the tool from the corresponding counter 43, and compares and calculates both values. Self-propelled device 2 in which shifter 24 is fitted with a corresponding tool
Whether the drive motor 23 is made to advance on the guide member 1 in the forward direction (in the direction of the arrow in FIG. This is a circuit that sends a command signal to a drive motor control circuit 45 (described later) to indicate whether to operate or stop the drive motor, and the control circuit 442 receives outputs from comparison circuits 441 corresponding to adjacent self-propelled devices 2 A command signal that calculates the distance between both self-propelled devices based on the signal, and stops or temporarily stops the drive motor 23 of one or both of the self-propelled devices 2 when the distance between the two approaches within a certain distance. This is a circuit that sends the signal to a drive motor control circuit 45 (described later) of the drive motor 23 of the corresponding self-propelled device.
The drive motor control circuit 45 is provided corresponding to the drive motor 23 of each self-propelled device 2, and the comparison control circuit 4
Drive motor 2 corresponding to the command signal from 4
This is a circuit for controlling the rotation speed 3 to operate in forward or reverse rotation, high speed rotation or low speed rotation, or to stop operation.

Next, the operation of the device of the present invention will be explained.

As shown in FIG. 6, the slitting scorer device 5 is disposed in an upper passage 7 and a lower passage 8, respectively, which are disposed behind a rotary shear 6 that cuts the corrugated cardboard web W at right angles to its traveling direction. ing. Between both passages 7 and 8 and the shear 6, the shear 6 is inserted after the shear 6 cuts the web.
A guide means 9 is provided for guiding the web W emerging from the passage 7 or 8 to the passage 7 or 8. The tools 52 and 53 of the device 5 can be moved up and down between a position S1 where the web W is cut and scored and a position S2 where the tools are positioned. Reordering the positions of the tools 52 and 53 on the shaft 51 of the device 5 placed in the S2 position releases each tool from fixation on the shaft 51, which will be described later, and also changes the position of the piston cylinder device 38 of the moving device 3. Protrude the piston rod 381 and fit the tip of the plate member 241 of each shifter 24 into the first position P of the head groove 501 of each tool,
A command circuit 42 is made to read a punch card in which the order positions of each tool are punched. Then, for each tool position, the command value from the circuit 42 and the detected value sent from the counter 43 are compared to the comparison control circuit 44.
A command signal is issued to each drive motor control circuit 45 to control the drive motor 23 corresponding to each tool for the amount of movement and for forward or reverse rotation, high speed or low speed rotation, or operation stop. Each self-propelled device 2 fitted into the shifter 24 is guided by the guide member 1.
Each of the robots moves on its own to the target position and then stops. When each self-propelled device 2 stops, the shifter 24 further performs the following operation.

That is, the piston rod 391 of the piston cylinder device 39 of the moving device 3 protrudes, and the shifter 24
The tip of the plate member 241 is in the tool head groove 501.
are advanced to a second position Q and engaged, at which time the pair of cutting tools come into contact with each other. After this, in each axis 51, the third
As shown in the figure, each tool 52 and 53 is fixed to the shaft 51 by expanding the tube 512 in the groove 511 by fluid pressure and protruding the fitting material 513, and then the piston of the piston cylinder device 38 The rod 381 and the piston rod 391 of the piston cylinder device 39 are retracted, and the shifter 24 together with the guide member 1 is moved back to the standby position R shown in FIG. Moving.

Another embodiment of the device of the present invention includes a cutting tool 52 and a scorer attached to a pair of parallel shafts 51B of a slitting scorer device 5B for cutting and scoring a corrugated cardboard web W that is continuously fed in its traveling direction. An example of a tool positioning device for the setting tool 53 is shown in FIG. In this embodiment, the guide member 1B is connected to a pair of rotatable shafts 51 of the device 5B.
It is provided parallel to B and is fixed to the frame 56. The number of self-propelled devices 2B is equal to the number of logarithms of the tools 52 and 53, and each self-propelled device 2B can run on the guide member 1B by a drive motor 23B attached to the frame 22B of each self-propelled device. There is. Furthermore, each self-propelled device 2B has a shifter 24B attached to the top. Shifter 24B
has a plate member 241B that can fit into the respective head groove 501B of the corresponding tool 52 or 53.

The moving device 3B includes a pair of piston cylinder devices 3B1 each having a piston rod 3B11 connected to a pair of inner frames 54 on a frame 56, and the projection of each piston rod 3B11 moves the pair of inner frames 54 to a pair of outer frames 54. By moving the shafts 51B up and down along the frame 55, the pair of shafts 51B whose both ends are rotatably supported by the pair of inner frames 54 are raised and lowered, and the head groove 501B of each tool 52 or 53 on the shaft is moved up and down in each self-propelled device 2B. The plate member 241B of the shifter 24B can be fitted into or removed from the fitting.

In this embodiment, the mobile device 3B connects the device 5B to
It also serves to move up and down between the position S1 where the web W is cut and scored and the position S2 where each tool is positioned. Reordering the respective positions of the tools 52 and 53 on the shaft 51B of the device 5B placed in the S2 position releases each tool from fixation on the shaft 51B and also changes the piston rod 3B11 of the piston cylinder device 3B1 of the moving device 3B. The head groove 501B of each tool is fitted to the tip of the plate member 241B of each shifter 24B by protruding, and the punch card with the order position of each tool punched is placed in a positioning numerical control device (not shown), and the corresponding tool is inserted. Each self-propelled device 2B fitted in the shifter 24B is caused to travel on the guide member 1B to a target position and stopped, and then the piston rod 3B11 of the piston cylinder device 3B1 of the moving device 3B further protrudes to lower the shaft 51B, The head groove 501 of each tool is at the tip of the plate member 241B of each shifter 24B.
This is done by fitting B together. At this time, the pair of cutting tools will connect to each other. After this, each tool 52 and 53 of each axis 51B
is fixed on the shaft by the same method as in the previous embodiment, and then the piston rod 3B11 of the piston cylinder device 3B1 is retracted, and the pair of shafts 51B rises to the S1 position.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway and partially omitted plan view showing an embodiment of the device of the present invention, FIG. 2 is a side view of the device of the present invention shown in FIG. 1, and FIG. 3 is a plan view of the device shown in FIG. FIG. 4 is an explanatory side view showing the self-propelled device used in the device of the present invention shown in FIG. 5 is an explanatory diagram showing in a block diagram an example of a positioning numerical control device used in the apparatus of the present invention shown in FIG. 1, and FIG. FIG. 7 is an explanatory diagram showing the outline of a slit scorer apparatus using another embodiment of the apparatus of the present invention. 1, 1B...Guide member, 11...Rack, 2,
2B... Self-propelled device, 21... Pinion, 212...
...Bearing member, 215...Joint, 22, 22B...
Frame, 23, 23B... Drive motor, 24,
24B...Shifter, 3, 3B...Movement device, 5
1,51B...a pair of parallel axes, 52,53...
Tools, W...web.

Claims (1)

[Claims] 1. A web such as cardboard that is passed between a pair of parallel shafts and continuously flows, is cut in the direction of its movement,
In order to carry out processing such as creasing, a plurality of pairs of tools each attached to the pair of shafts are run on guide members disposed parallel to the shafts, so as to numerically control the positioning of the tools, each of which is attached to the corresponding pair of shafts. a number of self-propelled devices equal to the logarithm of the tools, each having a shifter for fitting into a pair of tools, and a moving device for fitting the shifter of each self-propelled device into or removing the shifter from the corresponding pair of tools; In the tool positioning device, the guide member includes:
Equipped with a pair of racks on each opposing surface,
Each of the self-propelled devices includes a frame fitted onto the guide member, a pair of pinions supported by the frame via a bearing member and meshed with a pair of racks on one of the opposing surfaces, and a pair of pinions attached to the frame. a pair of pinions supported via bearing members and meshed easily with the other of the opposing surfaces;
and a drive motor that drives all of the pinions, and each pair of pinions is connected by a joint in a state in which they are rotated in opposite directions and meshed with the corresponding pair of racks without any gaps. tool positioning device. 2. The tool positioning device according to claim 1, wherein the moving device moves the guide member on which the self-propelled device is mounted. 3. The tool positioning device according to claim 1, wherein the moving device moves the pair of axes.