JPS589751B2 - tool positioning device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION In order to cut a continuously flowing web such as cardboard in its traveling direction, a pair of cutting tools positioned on two parallel axes are fixedly fitted to each of the axes. a holder and a cutting blade attached to each of the holders so as to face each other so as to be in contact with each other, and a cutter that fits into or out of each holder groove of the pair of cutting tools; The present invention relates to a tool positioning device that is movable on each of the axes.

In this type of apparatus, in order to cut the web, a pair of cutting tools installed on each of the two shafts have their respective cutting blades in contact with each other, so that the cutting tools in the pair are in contact with each other. When changing the position on the shaft, a gap is formed between the pair of cutting blades to protect the cutting blades, and then each of the holders is sent to a predetermined position on the shaft. I need to do it.

Conventionally, a pair of cutting tools is fixed on two parallel axes, and one of the two axes is moved in the axial direction to form a gap between the pair of cutting blades.
Each holder is released from the fixation of each axis and sent to a predetermined position on the axis via the sickle. When the tool feeding is completed, each holder is fixed on each axis again, and the axis that has been moved in the axial direction is moved again. The pair of cutting blades were returned to their original positions and brought into contact with each other.

As described above, in this type of conventional device, it is necessary to reciprocate one of the two parallel axes in the axial direction each time the position of the cutting tool is changed.

The purpose of the present invention is to simplify the mechanism and shorten operation time by eliminating the need to move either of the two parallel axes to which the cutting tool is attached when changing the position of the cutting tool. An object of the present invention is to provide a tool positioning device that enables the following.

Another object of the present invention is to provide a tool positioning device suitable for application to a slitter device, particularly a two-axis type and a four-axis type slitter scorer device.

Further objects of the invention will become apparent from the accompanying drawings and the detailed description below.

In accordance with the above object, the present invention provides the above-mentioned tool positioning device, in which each holder groove of the pair of cutting tools and the fitting portion of the chic that fits into each holder groove,
When the respective holders are moved on the respective axes after the initial engagement, a gap is created between the respective cutting blades, and when the holders are subsequently advanced and the holders are moved on the axes, a gap is created between the respective cutting blades. It is characterized in that the cutting blades are formed so that they are in contact with each other.

The present invention will be explained below based on examples.

In particular, in an embodiment of the present invention, as shown in FIGS. 1, 3, and 7, a corrugated cardboard web 62 that is continuously fed is
Six pairs of cutting tools 501 and 5 are attached to two parallel shafts 61 of a two-shaft slitter device 6 that cuts in the direction of movement.
An example of a tool positioning device equipped with 02 will be described below.

The tool positioning device according to this embodiment includes a guide member 1, a tool feeding device 2, a movable device 3, a positioning numerical control device 4, and a pair of cutting tools 51 and 51a.

The guide member 1 is a pair of rotatable shafts 61 of the slicking device 6.
The slide rails 1 are installed parallel to the upper and lower surfaces of the
A pair of racks 11A parallel to the shaft 61 are fixed on the rack 1B.

Six tool feeding devices 2 provided with shifters 24 are prepared, which is the number of pairs of cutting tools 51 and 51a.

Each device 2 includes a pinion 21 that meshes with the rack 11A of the guide member 1, a frame 22 that rotatably supports the shafts 211 and 213 of the pinion 21, and a frame 22 that is attached to the frame 22 and drives the shafts 211 and 213 of the pinion 21. A drive motor 23 is provided.

Furthermore, the frame 22 is fitted onto the guide member 1 .

One of the two pinions 21 that mesh with the pair of racks 11A on the upper and lower surfaces of the guide member 1 is fixed to a shaft 211, and the shaft 211 is connected to the frame via a bearing (not shown) in a bearing case 212. Supported by 22,
The other one is fixed to a shaft 213, and the shaft 213 is supported by the frame 22 via a bearing (not shown) in a bearing case 214 thereof.

The shafts 211 and 213 are connected by a joint 215 with the two pinions 21 turned in opposite directions and meshed with the corresponding racks 11A without any gaps.

The upper and lower bearing cases 212 are connected to one of the corresponding racks 1
1A and the slider rail 11B, and serves as a slider that restricts the movement of the frame 22 to the right and up and down in the figure, and the upper and lower bearing cases 214 are connected to the corresponding other rack 11A and the slider rail 11B. Slider rail 11B
It is in slidable contact with the frame 22 and also serves as a slider that limits movement of the frame 22 leftward and up and down in the drawing.

A bevel gear 216 is fixed to each of the upper and lower pinion shafts 213, and a bevel gear 217 is fitted to each bevel gear 216.

The shaft 218 of the two bevel gears 217
are connected by a joint 219 in a state where they are rotated 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 (not shown) in a bearing case 220.

In order to allow the adjacent devices 2 to approach each other sufficiently, the drive motor 23 of one of the adjacent devices 2 is supported on the upper rear surface of the frame 22 as shown by the solid line in FIG. 213, and the drive moke 23 of the other device is supported by the lower rear surface of the frame 22 and connected to the lower pinion shaft 213, as shown in phantom lines in FIG.
is connected to.

Additionally, each device 2 includes a shifter 24 supported at the front of the frame 22.

As shown in FIGS. 4 and 5, the shifter 24 has a tapered tip 2410 that can fit into the holder grooves 500 and 500a of the corresponding pair of cutting tools 51 and 51a, and the plate portion excluding the tip 2410. It has a pair of fitting members 241 whose thicknesses 2411 are uniform.

One of the cutting tools 5 of the pair of cutting tools 51 and 51a
1 consists of a holder 511 and a cutting blade 501, and the holder 511 is slidably fitted onto a shaft 61, and has a head portion 512 and a cutting blade 501 integrally provided with a ring-shaped protrusion at each end. There is an attached cutting blade attachment part 513,
00 is formed in a circumferential groove between the head portion 512 and the attachment portion 513.

The head groove 500 is a fitting member 241 of the shifter 24.
A first groove portion 5001 having a groove width equal to the thickness of the plate portion 2411 excluding the tip portion 2410 plus the gap between the pair of cutting blades 501 and 502;
A second groove portion 5002 is provided which has a groove width narrower than the groove width by the gap between the pair of cutting blades.

The other cutting tool 51a of the pair of cutting tools is
Consisting of a holder 511a and a cutting blade 502, the holder 51
1a is a head portion 512a which is slidably fitted to the shaft 61 and is integrally provided with a ring-shaped protrusion at each end.
and a cutting blade attachment part 513a to which the cutting blade 502 is attached, and a circumferential groove 500a is formed between the head part 512a and the attachment part 513a.

The groove 500a includes a first groove portion 5001a having the same groove width as the first groove portion 5001 of the groove 500, and a plate portion 24 of the fitting member 241 of the shifter 24 located at the back of the groove.
A second groove portion 5003a having a groove width equal to the thickness of 11
has been established.

Cutting blade 50 from the center of the first groove portion 5001 of the groove 500
The distance from the groove center of the first groove portion 5001a of the head groove 500a to the back surface 5011 of the cutting blade 502 is
The distance between the cutting blades 501 and 502 is greater than the distance to 021.

Furthermore, the groove 500 has a first groove portion 5001 of the groove 500 and a groove 5.
When the first groove portion 5001a of the shifter 24 is opposed to the first groove portion 5001a of the shifter 24, the plate portion 2 of the fitting member 241 of the shifter 24
The cutting blade 501 is inserted by fitting as shown in FIG. 5 of 411.
It is arranged so that it can be moved and come into contact with the cutting blade 502.

Further, the groove 500a is formed as shown in FIG. The cutting blade 502 is arranged so as not to move due to the insertion.

As shown in FIG. 2, the movable device includes plate members 31 fixed to both ends of the guide member 1, pinions 32 rotatably attached to each plate member 31, and each pinion 32.
A rack 33 that meshes with the guide member 1 and extends perpendicularly to the longitudinal direction of the guide member 1, a frame 34 to which each rack 33 is fixed, and two upper rollers rotatably attached to each plate member 31. 35 and one lower roller 36, and a rail member 37 which is arranged between the upper roller 35 and the lower roller 36, and in which these rollers can roll into contact with the rack 33.
and the shifter 24 fixed to the frame 34 in parallel with the
It has a piston rod 381 connected to the plate member 31 in order to move the shifter 24 together with the guide member 1 and the tool feeder 2 relative to the shaft 61 to engage or disengage the shifter 24 with the cutting tools 51 and 51a. The piston cylinder device 38 and the cylinder head are connected to the cylinder head of the device 38, and the piston rod 391 is connected to the frame 34.
A piston cylinder device 39 connected to the piston cylinder device 39 is provided.

An example of the positioning numerical control device 4 is shown in FIG.

The device 4 includes a linear position detector 41, a command circuit 42, a counter 43, a comparison control circuit 44, and a drive motor control circuit 45.

The linear position detector 41 is a linear scale 41 that records a magnetic scale, which is supported by an arm 341 provided on a plate member 81 and arranged parallel to the axis 61, as shown in FIG.
1, a detection unit (reading head) 412 which is provided above the shifter 24 of each tool feeding device 2 as close as possible to the scale unit 411 and detects the magnetic scale of the scale unit 411 and converts it into an electric signal; It includes an amplification section 413 that is provided corresponding to the detection section 412 and amplifies the electrical signal from the corresponding detection section 412.

The counter 43 is a circuit that is provided corresponding to each amplifying section 413 and counts and stores 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, card, digital switch, memory, keyboard, etc. as an electric signal over time to a later-described comparison circuit 441 corresponding to each tool. It is a circuit.

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 receives the detected value of the current position of the tool from the corresponding counter 43,
The two values are compared and calculated, and the shifter 24 is moved to the corresponding cutting tool 51.
and whether to move the drive motor 23 of the tool feeding device 2 fitted with 51a in the forward direction (direction of the arrow in FIG. 1) or in the reverse direction on the guide member 1, and how much the drive motor should move; A control circuit 442, which is a circuit that sends a command signal to a drive motor control circuit 45 described later to determine whether to make the rotation of the drive motor high or low, or to stop the operation of the drive motor.
calculates the distance between both tool feeders based on the output signal from the comparison circuit 441 corresponding to each adjacent tool feeder 2, and when the distance between the two approaches within a certain distance,
This circuit sends a command signal to stop or temporarily stop the drive motor 23 of one or both of the tool feeders 2 to the drive motor control circuit 45 of the drive motor 23 of the corresponding tool feeder.

The drive motor control circuit 45 is provided corresponding to the drive motor 23 of each tool feeding device 2, and controls the corresponding drive motor 23 to operate in forward or reverse rotation, high speed rotation, low speed rotation, or is the circuit that controls the operation to stop.

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

As shown in FIG. 7, the slitter device 6 is disposed in an upper passage 64 and a lower passage 65, respectively, which are disposed behind a rotary shear 63 that cuts a corrugated cardboard web 62 at right angles to its traveling direction. has been done.

Guide means 66 are provided between the two passages 64 and 65 and the shear 63 to guide the web 62 emerging from the shear 63 into the passage 64 or the passage 65.

The tools 51 and 51a of the device 6 move up and down between a position S1 where the web 62 is cut and a position S2 where the tools are positioned.

Reordering the respective positions of the cutting blades 501 and 502 on the shaft 61 of the cutting tool of the device 6 placed at the S2 position is as follows:
Each cutting tool 51 and 51a is released from fixation on a shaft 61 (described later), the piston rod 381 of the piston cylinder device 38 of the movable device 3 is made to protrude, the guide member 1 is brought parallel to the shaft 61, and the holder of each cutting tool is The plate portion 2411 of the mating member 241 of each shifter 24, which is waiting at a position corresponding to the position of the grooves 500 and 500a, is inserted into the first groove portion 5001 of the holder groove 500 of each cutting tool and the holder groove 5.
00a into the first groove portion 5001a at the same time,
This is done by having the command circuit 42 read a punch card in which the order positions of each tool are punched.

Then, for each tool position on the axis 61, the circuit 42
The command value of the target position from the counter 43 and the detected value of the current position from the counter 43 are constantly compared and controlled by the comparison control circuit 44.
A command signal is sent to each drive motor control circuit 45 to control the drive motor 23 of the tool feeding device corresponding to each tool, and the command signal for the amount of movement and forward or reverse rotation, high speed or low speed rotation, or operation stop is sent to the drive motor 23 of the tool feeding device corresponding to each tool. Holder grooves 500 and 500a
Each tool feeding device 2 having a fitted shifter 24 is caused to travel on the guide member 1 to a target position and then stopped.

The initial fitting between each tool holder 51 and 51a and the shifter 24, that is, the plate portion 2411 of the fitting member 241 is the first groove portion 5001 of the holder groove 500.
When the cutting tools 51 and 51a are fitted into the first groove portion 5001a of the holder groove 500a and move on the two axes 61, the side surface 50011 of the first groove portion 5001 and the first groove are inserted into the plate portion 2411. part 50
Side surface 50011a of 01a or side surface 50012 of first groove portion 5001 and side surface 5001 of first groove portion 5001a
2, the cutting blade 501 is the cutting blade 502.
or the cutting blade 502 separates from the cutting blade 501 to form a gap between both cutting blades.

When each tool feeding 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 movable device 3 protrudes, and the plate portion 2411 of the fitting member 241 of the shifter 24 is inserted into the second portion of the holder groove 500.
Groove portion 5002 and second groove portion 50 of holder groove 500a
The cutting blades are advanced to 02a and continue to fit together, and the cutting blades 501 and 502 are brought close to each other, or the cutting blades 502 are brought close to the cutting blades 501, and the two cutting blades come into contact with each other.

After this, in each axis 61, as shown in FIG.
By expanding the tube 612 in the groove 611 by fluid pressure and protruding the fitting material 613, each cutting tool 51 and 51a is fixedly installed on the two parallel shafts 61, and then the piston rod 381 and the piston cylinder device 38 are fixedly installed. The piston rod 391 of the piston cylinder device 39 is retracted, and the shifter 24 is moved back together with the guide member 1 to the standby position R shown in FIG. The slitter device 6, which is simultaneously separated and located at the S2 position, is at the S2 position.
Move to position 1.

Another embodiment of the fitting member of the holder groove of the cutting tool and the shifter in the apparatus of the present invention is shown in FIGS. 8 and 9.

One of the fitting members 241b of the pair of fitting members of the shifter 24 has a tapered tip 2410b, a first plate portion 2411b, and a thickness corresponding to the gap between the cutting tools 501 and 502 on the left side of the first plate portion 2411b. The other fitting member 241c includes a tapered tip 2410c, a first plate portion 2411c corresponding to an extension of the first plate portion 2411b of the fitting member 241b, and a first plate portion. The cutting tool 51b is one of the pair of cutting tools 51b and 51c, and the fitting members 241b and 241c are integrally provided. The holder 511b is slidably fitted onto the shaft 61, and has a head part 512b integrally provided with a ring-shaped protrusion at each end, and a cutting blade attachment part 513b to which the cutting blade 501 is attached, Head part 512b and mounting part 51
3b, a circumferential groove 500b is formed.

The groove 500b has a groove width into which the second plate portion 2412b of the fitting member 241b of the shifter 24 can be inserted.

The other cutting tool 51c of the pair of cutting tools is composed of a holder 511c and a cutting blade 502, and the holder 511c is slidably fitted to the shaft 61 and integrally provided with a ring-shaped protrusion at each end. The cut head portion 512c and the cutting blade 5
02 is attached, and a circumferential groove 5 is provided between the head portion 512c and the attachment portion 513c.
00c is formed.

The groove 500c has a groove width equal to the thickness of the second plate portion 2413c of the fitting member 241c of the shifter 24.

The distance from the groove center of the groove 500b to the back surface 5011 of the cutting blade 501 is the distance from the groove center of the head groove 500c to the cutting blade 50.
From the distance to the back surface 5021 of 2, the cutting blades 501 and 50
There is a large gap between 2 and 2.

Therefore, in the first fitting, the plate portion 2411b of the fitting member 241b of the shifter 24 and the plate portion 2411c of the fitting member 241c of the shifter 24 are fitted into the holder groove 500b and the holder groove 500c, respectively, and the pair of cutting tools 51b and 51c respectively move on the two parallel axes 61, the plate portion 2411b of the fitting member 241b of the shifter 24 is aligned with the holder groove 5.
00b and the plate portion 2411c of the fitting member 241c of the shifter 24 touches the side surface 5001c of the holder groove 500c, or the plate portion 2411b of the fitting member 241b contacts the holder groove 50.
0b side surface 5002b and fitting member 24
Since the plate portion 2411c of 1c hits the side surface 5002c of the holder groove 500c, the cutting blade 501 is in contact with the cutting blade 502.
or the cutting blade 502 separates from the cutting blade 501, and a gap is formed between both cutting blades.

A pair of cutting tools 51b and 51c each have two parallel axes 6
When the shifter 24 is fitted after completing the above movement, the plate portion 24 of the fitting member 241b
12b and the plate portion 24 of the fitting member 241c
13c are fitted into the grooves 500b and 500c, respectively, and the cutting blade 501 is brought close to the cutting blade 502, or the cutting blade 502 is brought close to the cutting blade 501, and the two cutting blades come into contact.

Further, as another example of the fitting member between the holder groove of the cutting tool and the shifter in the device of the present invention, the combination of the holder groove 500 and the holder groove 500c, the combination of the fitting parts 241 and 241c of the shifter fitting member, and the holder groove 500.
b and the holder groove 500a, as well as the combination of the chic fitting members 241b and 241, etc., but detailed explanation will be omitted.

According to the present invention, when the Schick's fitting member and each holder groove of the pair of cutting tools first fit, and each holder moves on each axis via the shifter, the cutting blade of one of the holders is separated from the cutting blade of the other holder, creating a gap between both cutting blades, which protects each cutting blade while the holder is moving, and when the cutting blade is continuously pushed forward, the cutting blade of one of the holders will separate from the other. When the machine approaches the cutting blade, both cutting blades come into contact and are ready for cutting, and these operations can be performed easily and reliably.

[Brief explanation of drawings]

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 of the invention shown in FIG. 1. An explanatory side view showing the tool feeding device and tool holder used in the device, and FIGS. 4 and 5 show the fit between the holder groove and the chic of the cutting tool used in the device of the present invention shown in FIG. FIG. 6 is an explanatory diagram showing the state of fitting of members, FIG. 8 and 9 are explanatory diagrams of the operation of the slitting device using the device of the present invention shown in FIG. 1. FIGS. It is an explanatory view showing a fitting state. 241, 241b, 241c...Shifter, 5
1, 51a, 51b, 51c...cutting tool,
511, 511a, 511b, 511c...Holder, 500, 500a, 500b, 500c...
...Holder groove, 501, 502... Cutting blade, 6
1...Parallel axis, 62...Web.

Claims (1)

[Claims] 1 A pair of cutting tools positioned on two parallel axes in order to cut a continuously flowing web such as cardboard in the direction of its movement, including a holder fixedly fitted to each of the axes and each of the holders. and cutting blades that are attached so that they face each other and are in contact with each other, and a cutter that fits into or out of the respective holder grooves of the pair of cutting tools to move each of the holders on the respective axes. In a tool positioning device having a movable device,
When each of the holder grooves of the pair of cutting tools and the fitting portion of the chic that fits into each of the holder grooves are initially fitted and each of the holders is moved on each of the axes, there is a gap between the respective cutting blades. A tool positioning device characterized in that the tool positioning device is formed such that a gap is formed between the holders, and when the holders are continuously advanced, they fit together, and one of the holders moves on the shaft, so that the respective cutting blades come into contact with each other.