JP2502852Y2 - Slotter splice knife protector - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a splice knife protection device for a slotter, and in particular, when setting the splice size of corrugated cardboard, the running machine is operated while the machine and the blade barrel are stopped. The present invention relates to a splice knife protection device for a slotter that retracts the blade barrel from the knife barrel to protect the splice knife of the slotter when operating the register device.

[Prior Art] Conventionally, the device shown in FIG. 3 has been used as an adjusting device for a slotter knife.

That is, in the drawing, reference numeral 10 indicates a knife barrel,
This knife barrel 10 is parallel to the blade barrel 12
A slotter device is a device that is rotatably supported by 6 and that passes the corrugated board sheet 17 between the two cylinders and cuts it to form the shape shown in FIG. That is, although not shown in the drawing, the groove 18 and the edge drop 20 in FIG. 5 are cut by a so-called rotary knife, which is a mesh of disc-shaped knives attached to the knife barrel 10 and the receiving barrel.

Further, the corrugated board sheet 17 shown in FIG. 5 has a joint margin of 22.
Is attached to the outer periphery of the knife cylinder 10 shown in FIG. 7 while being inclined at an angle of 5 ° with respect to the rotational axis direction of the knife cylinder 10, that is, about 95 ° with respect to the traveling direction of the corrugated cardboard sheet 17.
The knives for the seam allow the knife 18 to be installed opposite to the knife.
It is formed by pressing a steel quench-hardened ring (hereinafter referred to as anvil 20) mounted on 12 and cutting it.

In this case, since the anvil 20 and the piecing knife 18 are made of hard material and are in contact with each other, very fine adjustment is required for the contact state (knife hit) of the piecing knife 18 and the anvil 20. It

That is, the slotter knife adjusting device shown in FIG. 3 has a pair of eccentric housings arranged on both sides of the blade barrel 12.
Idler gears 28a, which mesh with the gears 24a, 24b of the eccentric housings 26a, 26b, in order to finely rotate the 26a, 26b and move the blade barrel 12 with respect to the knife barrel 10 to adjust the mutual axes. 28b, an interlocking shaft 32 having a pair of pinions 30a, 30b meshing with the idle gears 28a, 28b fixed on both sides,
A pinion shaft 34 having a gear 36 that meshes with one of the pinions 30b, a shank portion 36 formed to rotate by inserting a handle on the side of the pinion shaft 34 opposite to the side having the gear 36, and the pinion shaft 34. After the adjustment of the distance between the shafts of the respective cylinders by the rotation of the.

Further, this clamp 40 is fixed to the side plate 35, and at the other end thereof, a slide slit 42 extending from the end face to the pinion shaft insertion hole.
The lock 42 is tightened by the lock handle 38 and elastically deformed to fix the pinion shaft 34 in a narrow manner.

In this case, since the A dimension of the joint margin shown in FIG. 6 changes for each order depending on the product, the knife barrel 10 is rotated independently of the main drive gear 44 and the joint margin knife for the main drive gear 44 is rotated.
It must be set by changing the phase of 18.

It is the running register device 46 that is used to set this initial A dimension, and is equipped with a differential mechanism and a dedicated electric motor inside.

That is, the running register device 46 is not operated during normal operation and the positional relationship of the A dimension is kept constant, but when the A dimension is changed, the machine is stopped and the running register device 46 is activated. Set the appropriate dimensions.

During operation of the machine, the main motor 41 is activated to drive the main drive gear train 43 meshed therewith, and further drive the main drive gear 44 meshed with a part of the main drive gear train 43, A driven gear 45 meshing with this main drive gear 44
By rotationally driving the blade barrel 10, the knife barrel 10 and the blade receiving barrel 12 can be rotated synchronously.

When the machine is in operation, as shown in FIG. 7, the joint margin knife 18 is in contact with the anvil 20, that is, the joint margin 22.
Even if the running register device 46 is activated while cutting the blade, such a state is instantaneous, and since the knife barrel 10 and the blade barrel 12 are both rotating, the joint margin knife 18 and the anvil 20 are The contact state is instantly released.

[Problems to be solved by the invention] However, when setting the A dimension, when the running register device 46 is operated while the machine and the receiving cylinder are stopped, the receiving surface of the anvil 20 is forcibly pulled by the joint margin knife 18. It is often a seam knife 18 because it rubs through.
Therefore, there is a problem that an electric remote operation for automatically setting a joint margin dimension such as a digital preset which has been widely adopted in recent years cannot be adopted.

Therefore, an object of the present invention is to break the knife in the splicing margin, which has conventionally occurred, by retracting the blade receiving cylinder from the knife cylinder when the running register device is operated while the machine and the blade receiving cylinder are stopped. It is an object of the present invention to provide a joint knife protector for a slotter capable of preventing accidents.

[Means for Solving the Problems] In order to achieve the above-mentioned object, in the present invention, a blade receiving cylinder corresponding to a knife barrel having a running register device is rotatably supported on both sides of the blade receiving cylinder. In a slotter knife adjusting device in a slotter device of a corrugated board box making machine configured to adjust the contact pressure to the knife barrel by rotating an eccentric housing equipped with a bearing, a gear provided on the pair of eccentric housings. A pinion on both sides of the gear that meshes with each other, an interlocking shaft connecting the pinions on both sides, a pinion shaft having a gear that meshes with one of the pinions, and an eccentric housing on both sides,
Frames on both sides that rotatably support the interlocking shaft and the pinion shaft, a swing arm attached to the side opposite to the side having the gear of the pinion shaft, and one end of the swing arm as a split structure The running register is provided with a lock handle screwed to the swing arm so as to be tightly clamped to the pinion shaft and an actuator pivotally supported at the other end of the swing arm, while the machine and the blade barrel are stopped. When the apparatus is operated, interlocking means is provided for activating the actuator to retract the blade receiving cylinder from the knife cylinder and for restoring the actuator to the original position after the running register device operation is completed.

[Operation] The slot knife joint protection device according to the present invention is
When operating the running register device attached to the knife cylinder when the machine and the blade cylinder are stopped, the actuator is operated by the interlock circuit to retract the blade cylinder from the knife cylinder, and the running register device operates. After the setting of the joint margin dimension is completed, the actuator is restored to the original position, so that the joint margin knife can be prevented from being damaged.

[Embodiment] Next, an embodiment of a splice knife protection device for a slotter according to the present invention will be described in detail below with reference to the accompanying drawings.

For convenience of explanation, the same parts as those of the conventional structure shown in FIG. 3 are designated by the same reference numerals, and detailed description thereof will be omitted.

FIG. 1 is a sectional view of an essential part of a slotting knife protection device for a slotter according to the present invention.

That is, reference numeral 37 indicates a pinion shaft, and the gear 36 provided at the end of the pinion shaft 37 is an eccentric housing 26.
The idle gears 28a and 28b mesh with the gears 24a and 24b of a and 26b.

The frame 16 of the pinion shaft 37 is rotatably supported by the side plate 35 provided in parallel with the frame 16 adjacent to the frame 16, and the flange 48 formed at the center of the pinion shaft 37 is the side plate. Both sides are held by 35 and the thrust receiver 50 fixed to the side plate 35, and movement in the axial direction is restrained.

Further, one end of a swing arm 52 is mounted on the side of the pinion shaft 37 opposite to the gear 36.

That is, the mounting portion of the swing arm 52 has a through hole 53 for inserting the pinion shaft 37 from a stepped portion formed in the middle.
The slot 54 is cut to the lock handle 58.
The pinion shaft 37 inserted into the through hole 53 is clamped and elastically deformed, and the pinion shaft 37 is tightly fixed.

Further, the swing arm 52, which is tightly fixed to the pinion shaft 37 and fixed, is inserted into the shaft end side of the pinion shaft 37, and the axial movement is restricted by the collar 62 fixed via the set screw 60. To be done.

Reference numeral 39 indicates a shank portion, and the lock handle 58 is loosened during adjustment of the seam knife 18, and a handle (not shown) is inserted into the shank portion 39 to rotate the pinion shaft 37, and the eccentric housings 26a and 26b are used to rotate the pinion shaft 37. Since the blade receiving cylinder 12 is moved with respect to the knife cylinder 10 to set the optimum position when the seam allowance knife 18 and the anvil 20 are brought into contact with each other, the mutual axes can be finely adjusted.

More specifically, since the joint margin knife 18 of the knife cylinder 10 is inclined 5 ° with respect to the rotational axis direction of the knife cylinder 10, the edge of the cutting edge against the anvil 20 has no difference in radius between the anvil 20 at both ends and in the center thereof. Be uniform. Therefore, in order to reliably perform the joint margin processing between the blade edge of the joint margin knife 18 and the anvil 20, the receiving blade barrel 12 is placed on the knife barrel 10 as described above.
Is adjusted so as to obtain a predetermined contact pressure by pressing so as to cover the non-uniformity of the radius difference.

It is preferable that the number of teeth of the main drive gear 44 and the driven gear 45 be designed so that the least common multiple is as large as possible so that the contact points between the anvil 20 and the joint margin knife 18 are not always the same.

Further, reference numeral 64 indicates an oscillating actuator, and this actuator 64 is a cylinder operated by hydraulic pressure, and one end of which is supported by a bracket 66 fixed to the side plate 35 so as to be pivotable via a pin 68. There is.

Further, the tip of the piston rod 70 of the actuator 64 is pivotally supported by the other end of the swing arm 52 via a pin 72.

Therefore, as shown in FIG. 2, when the actuator 64 is actuated while the pinion shaft 37 and the swing arm 52 are locked at the optimum adjustment position, the pinion shaft 37 rotates by θ °, whereby the end of the pinion shaft 37 is rotated. A series of gears 28a, 28b, 30a, 30b meshing with the gear 36 of the
Rotate 6a and 26b. This allows the blade barrel 12 to move from the knife barrel 10
Can be evacuated from.

Next, the interlock means when changing the setting of the joint blade dimensions will be described.

That is, FIG. 8 is a block diagram showing the interlock circuit, in which the AND gate 80 is opened by the stop signal 76 of the machine and the blade receiving cylinder and the running register device actuating signal 78 by the output of the joint margin dimension change command signal 74. Be done.
An actuator operation signal 82 is output by the signal that has passed through the AND gate 80, then an AND gate 88 is opened by the actuator operation completion signal 84 and the running register device completion signal 86, and the actuator restoration is performed by the signal that passed through the AND gate 88. The signal 90 is output.

In this way, when the running register device attached to the knife barrel is operated when the machine and the blade barrel are stopped when changing the joint margin dimensions, by retracting the blade barrel from the knife barrel, It is possible to prevent damage accidents of the seam allowance knife.

[Advantages of the Invention] As is apparent from the above-described embodiment, the slot protector knife protector according to the present invention includes a knife barrel provided with a running register device, and an eccentric housing via a bearing to accommodate the knife barrel. A receiving blade that is rotatably supported,
The machine and the blade receiving cylinder are stopped by being composed of a swing arm attached to one end of the pinion shaft for meshing with the gear of the eccentric housing and rotating the gear, and an actuator pivoting the swing arm. When the running register device is actuated on, by retracting the blade barrel from the knife barrel, it is possible to prevent damage accidents of the splice margin knife that often occurred in the past, and to determine the splice margin size. It is possible to perform automatic setting of the setting change by electric remote operation such as digital presetting, which is safe and highly reliable, and has the effect that production efficiency can be improved.

Although the preferred embodiment of the present invention has been described above, it is needless to say that the present invention is not limited to the embodiment of the present invention and various design changes can be made without departing from the spirit of the present invention.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of an essential part showing an embodiment of a slotting knife protection device of a slotter according to the present invention, FIG. 2 is a view taken in the direction of arrow A in FIG. 1, and FIG. 3 is a conventional slotter knife adjusting device. 4 is a plan view of a corrugated cardboard sheet cut by a slotter device, FIG. 6 is an explanatory view of a drive system showing a machine operating state, FIG. FIG. 7 is a partial perspective view showing the relationship between the slot knife and the anvil.
FIG. 8 is a block diagram showing an interlock circuit for operating the running register device. 10 …… Knife barrel, 12 …… Bearing barrel 14,16 …… Frame, 17 …… Corrugated board sheet 18 …… Splice knife, 20 …… Anvil 22 …… Splice margin, 24a, 24b …… Gear wheels 26a, 26b ...... Eccentric housing 28a, 28b ...... Idle gear 30a, 30b ...... Pinion gear 32 ...... Interlocking shaft, 34, 37 ...... Pinion shaft 35 ...... Side plate, 36 ...... Gear 38 ...... Lock handle 39 ...... Shank part, 40 …… Clamp 42 …… Sliding slot, 44 …… Main drive gear 45 …… Driven gear 46 …… Running register device 52 …… Swing arm, 54 …… Sliding slot 58 …… Lock handle, 62 …… Collar 64 ...... Actuator, 66 …… Bracket 74 …… Seam allowance dimension change command signal 76 …… Stop signal for machine and cutter barrel 78 …… Running register device operation signal 80,88 …… And gate 82 …… Actuator operation signal 84 …… Actuator operation completion signal 86 …… Running register Device operation completion signal 90 ...... actuator restoration signal

Claims (1)

(57) [Scope of utility model registration request] Claims: 1. A blade cylinder corresponding to a knife cylinder provided with a running register device, and an eccentric housing having bearings rotatably supported on both sides of the blade cylinder is rotated to contact the knife cylinder. In a device for adjusting a slotter knife in a slotter device for a corrugated board box machine configured to adjust pressure, gears provided in the pair of eccentric housings, pinions on both sides meshing with the gears, and pinions on both sides are connected. An interlocking shaft, a pinion shaft having a gear that meshes with one of the pinions, an eccentric housing on both sides, frames on both sides that rotatably support the interlocking shaft and the pinion shaft, and a gear on the pinion shaft. Side and the swing arm attached to the opposite side, and one end of this swing arm has a split structure and is tightened to tightly attach to the pinion shaft. In order to do so, a lock handle screwed to the swing arm and an actuator pivotally supported at the other end of the swing arm are provided,
When the running register device is operated while the machine and the receiving cylinder are stopped, the actuator is operated to retract the receiving cylinder from the knife cylinder and restore the actuator to its original position after the running register device has been operated. An interlocking knife protection device for a slotter, which is provided with interlocking means.