JP2571969Y2 - Round blade moving device in multi-blade cutting machine - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for moving a round blade in a multi-blade cutting machine for cutting a peripheral edge of a plate material such as paper, a metal plate, a plastic plate or the like, or dividing the plate material into a plurality of plates. .

[0002]

2. Description of the Related Art Conventionally, each round blade of a multi-blade cutting machine using a plurality of round blades is fitted to a main shaft driven by a motor together with a cylindrical positioning spacer, and each round blade is fixed in position by tightening a nut. It is attached to.

[0003]

In the conventional multi-blade cutting machine as described above, when changing the cutting width of the material, the operation of the machine is first stopped, then the nut is loosened and the spacer and the round blade are removed from the main shaft together with the nut. Remove.

A spacer for a desired cutting width is selected, a round blade is fitted to the main shaft together with the spacer, and then the nut is tightened with a nut. Therefore, it takes a lot of trouble and the machine has to be stopped for a long time when changing. There is a problem that the operation rate is reduced.

In addition, there is a problem that a large number of spacers having different dimensions are required, and troublesome selection and management are troublesome. An object of the present invention is to solve the above-mentioned problems of the conventional multi-blade cutting machine and to obtain a round-blade moving device that can easily and quickly move each round blade and easily adjust the interval therebetween. .

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention is directed to a spindle having a slide key extending over substantially the entire length, engaging with the slide key, rotating with the spindle, and axially. In a multi-blade cutting machine provided with a plurality of round blades that can move freely, the tip of a reciprocating support frame that moves along a guide rail provided in parallel with the main shaft can be moved toward and away from the main shaft. And a pair of rocking levers in a direction perpendicular to the main shaft, and a driving means for opening and closing the two rocking levers are provided, and the round blades are provided on the main shaft side of the distal ends of the two rocking levers. An engaging piece that engages with and disengages from a groove of a concentrically provided sheave is provided on a side portion of the main shaft. Equipped with an engaging lever that prevents the round blade from moving in the axial direction The rear end portion of the engaging lever and retractable into the groove of the sheave, the engagement piece of the rocking lever has a configuration of separating from the slide key press rear end of the engaging lever. In addition, a boss portion without a groove is provided on the outer periphery in place of the grooved wheel, and a clamping piece is provided in place of the engaging piece, or a main shaft and a shaft that rotates together with the main shaft and can move in the axial direction. A plurality of round blades are provided, and a movable coupling member that operates by centrifugal force when the main shaft rotates together with the round blade and integrally connects the main shaft and the round blade is provided between the main shaft and the shaft hole of the round blade. In a multi-blade cutting machine, a reciprocating support frame that moves along a guide rail provided in parallel with the main shaft has a distal end that can approach and separate from the main shaft, and can move in a direction perpendicular to the main shaft. A pair of swing levers,
Driving means for opening and closing the two rocking levers is provided. On the main spindle side of the front end portions of the two rocking levers, a pinch for moving the round blade to a desired position with the boss portion of each round blade being interposed therebetween. A structure provided with a dressing piece was also employed.

[0007]

Since the present invention has the above construction, a pair of swing levers mounted on the support frame are opened, and the tip of each swing lever is brought into a position where it does not hit the round blade. Move the support frame.

Next, when the two rocking levers are rotated in the closing direction by the driving means, the respective engaging pieces at the distal end portions of the both rocking levers are engaged with the grooves of the sheaves on the side portions of the round blade. At this time, the engagement piece pushes the rear end of the engagement lever in the groove, the engagement lever rotates against the spring pressure, and the tip end is separated from the slide key of the main shaft. Becomes

Next, the support frame is moved together with the round blade,
After the circular blade is at the desired position, when both swing levers are opened by the driving means, both engaging pieces are disengaged from the groove of the groove wheel, and the tip of the engaging lever in the groove engages the slide key. And fixed to the main shaft.

[0010] In addition, in the case where a movable coupling member is provided between the main shaft and the shaft hole of the round blade, which operates by centrifugal force when the main shaft rotates together with the round blade to integrally connect the main shaft and the round blade, the rotation of the main shaft is provided. Is stopped, and the pair of swing levers mounted on the support frame are opened under the condition that the round blade is free with respect to the main shaft, so that the ends of both swing levers do not hit the round blade, and Move the support frame to the position of the round blade.

Next, when the two swinging levers are rotated in the closing direction by the driving means, the respective holding pieces at the end portions of the both swinging levers hold the boss portion of the round blade. After moving the circular blade to a desired position, the two pivoting levers are opened by the driving means and at the same time the main shaft is rotated, the movable connecting material couples the main shaft and the round blade by centrifugal force.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the embodiment shown in FIGS. 1 and 2, reference numeral 1 denotes a main shaft having both ends rotatably supported on a frame (not shown) of a multi-blade cutting machine. It is mounted slidably, but the slide key 3 provided on the spindle 1
As a result, the main shaft 1 and the round blade 2 rotate together.

Reference numeral 4 denotes upper and lower guide rails having both ends fixed to the frame so as to be parallel to the main shaft 1. A support frame 5 has a pair of upper and lower engagement grooves 6 slidably engaged with the guide rails 4 so as to be movable in a direction parallel to the main shaft 1.

Reference numeral 7 denotes a feed screw provided on the frame in parallel with the main shaft.
The support frame 5 moves along the guide rail 4 by the forward / reverse rotation of the feed screw 7.

Reference numeral 9 denotes a pair of upper and lower swinging levers, the rear portions of which are attached to the support frame 5 by a shaft 10. The swing lever is opened and closed by the driving means 11. In the embodiment, an air cylinder 12 is used as the driving means 11. The rear end of the cylinder 12 is rotatably connected to the rear end of one lever 9, and the front end of a piston rod 13 protruding from the front end of the cylinder 12 is rotatably connected to the rear end of the other lever 9.

Although not shown, the upper and lower rocking levers 9 are connected by a link or the like, and are linked so that the two levers rotate inward from the position shown in FIG. 1 by the same angle. Reference numeral 14 denotes a groove wheel fixed concentrically with the round blade 2, which also serves as a boss of the round blade 2, and a groove engaging with the shaft hole of the main shaft 1 and the key 3 is also provided on the groove wheel 14. At the tip of the upper and lower swing levers 9, engaging pieces 16 which are engaged with and disengaged from the grooves 15 of the sheave wheel 14 are provided.

Reference numeral 21 denotes a recess formed in a part of the groove 15, a part of which reaches the outer periphery of the main shaft 1. This recess 2
1, the tip of the engagement lever 22 is swingably mounted by a shaft 23, and the tip of the engagement lever 22 is engaged with the side surface of the key 3 of the main shaft 1 to prevent the round blade 2 from moving in the axial direction. Engagement part 2
4 is provided.

A pressing spring 26 is mounted between the inside of the rear end 25 of the engaging lever 22 and the bottom of the recess 21, and the engaging portion 25 is moved by the force of the spring 26 to the side of the key 3. And the rear end portion 25 is protruded near the outer periphery of the groove 15.

Next, the operation of the above embodiment will be described for the case of automatic operation. At first, all the round blades 2 are shifted to one side. In this state, the rotation of the feed screw 7 causes the support frame 5 to rotate.
Moves to the position of the target round blade 2.

At this time, the upper and lower swing levers 9 are in the expanded state, and the engagement pieces 16 at the tips thereof are in positions where they do not contact the round blade 2. As described above, when the driving means 11 operates under the condition that the support frame 5 has moved to the target position and stopped, and the rear end of the swing lever 9 is pushed open, the engaging piece 16 at the front end moves inward and the groove wheel The groove 15 is engaged with the groove 14 as shown in FIG.

At this time, the engaging piece 16 of one lever 9 pushes the rear end 25 of the engaging lever 22 in the groove 15 inward against the pressure of the spring 26, so that the engaging part 24 at the leading end is Move away from the side of key 3.

Therefore, since the round blade 2 is free, in this state, the support frame 5 is moved by rotating the feed screw 7 to move the round blade 2 to a desired position. When each is opened up and down, each engagement piece 16 separates from the groove wheel 14.

The engaging lever 22 presses the engaging portion 24 at the tip of the engaging lever 22 against the slide key 3 by the action of a spring 26 to fix the round blade 2 to the main shaft 1. After the positioning of each round blade 2 by repeating the above operation, the material is supplied to a material supply device (not shown) to cut the same material.

When the rotation of the spindle 1 is stopped, a stop position control means for stopping the engagement lever 22 at the position shown in FIG. 1 is incorporated in the control circuit of the spindle 1. The groove wheel 14 of the above embodiment is a boss portion having no groove 15 on the outer periphery,
May be used as one of the holding pieces to push the engaging lever 22 when the holding piece holds the outer periphery of the boss.

In the other embodiments shown in FIGS. 3 to 9, parts having the same functions and functions as those of the first embodiment shown in FIGS. 1 and 2 are denoted by the same reference numerals, and description thereof will be omitted. Only the differences will be described.

In this embodiment, the coupling structure between the main shaft 1 and the round blade 2 is different. That is, as shown in FIGS. 4 and 5, the central portion of the round blade 2 is a thick boss portion 31, and the key groove 32 on the inner periphery of the boss portion 31 is slidable on a slide key 33 fixed to the main shaft 1. , The round blade 2 rotates together with the main shaft 1 and is movable in the axial direction.

The main shaft 1 is provided with another groove 34, and the boss 3
A groove 35 facing the above-mentioned groove 34 is provided on the inner periphery of 1. Reference numeral 36 in FIGS. 3 to 5 denotes a movable connecting member having a square rod shape.
It is fitted between the grooves 34 and 35 with an appropriate gap.

In the above embodiment, since the movable coupling member 36 is idle in the grooves 34 and 35 while the main shaft 1 is rotating at a low speed or stopped, each round blade 2 can move freely along the key 33, so that each round blade The spacing of 2 can easily be changed.

Therefore, when the main shaft 1 is stopped and all the round blades 2 are initially shifted to the right as shown in FIG. Is moved to a position between the round blades 2.

At this time, the upper and lower swinging levers 9 are in the expanded state, and the holding piece 37 at the tip thereof is in a position where it does not contact the round blade 2. When the driving means 11 operates under the condition that the support frame 5 has been moved to the target position and stopped as described above, and the rear end of the swing lever 9 is pushed open, the holding piece 37 at the front end moves inward, and FIG. The outer periphery of the boss portion 31 is sandwiched between the dashed lines.

In this state, the support frame 5 is moved by rotation of the feed screw 7 to move the second round blade from the right and each round blade 2 on the left side to the position shown in FIG. When the opening 9 is opened up and down, each holding piece 37 is separated from the boss 31.

Next, the feed screw 7 is turned again to position the support frame 5 between the second and third round blades 2 from the right, and the same operation as in the previous time is performed to remove the second round blade 2 from the right. The remaining round blades 2 are moved to the left by a predetermined distance.

By repeating the above operation, all the round blades 2 have a predetermined interval as shown in FIG. 8, and then the main shaft 1 is rotated in the direction of the arrow in FIG. The member 36 is moved outward by centrifugal force, and the member 36 is pressed against the bottom surface of the groove 35 so that the main shaft 1 and the round blade 2 are integrally joined.

In the above embodiment, the key 33 is used. However, since the round blade 2 and the main shaft 1 can be rotated together with only the movable coupling member 36, the key 36 may not be used.

In the embodiment shown in FIG. 9, a concave portion 39 is provided on the side surface of the boss portion 31 of the round blade 2, and the movable connecting member 40 is formed in a cam shape. It is attached.

In the case of this embodiment, the member 40 is
In order to generate a rotational force, a weight 42 is provided on the side of the member 40, and a spring 43 for pressing the outside of the weight 42 is provided.
Is provided so that the member 40 is separated from the outer periphery of the main shaft 1 while the main shaft 1 is rotating at a low speed or stopped.

In the case of the above embodiment, the interval between the round blades 2 can be freely changed with respect to the main shaft 1 while the main shaft 1 is rotating at a low speed or stopped. When the main shaft 1 is rotated in the direction of the arrow in FIG. 9 after adjusting the interval of 2, the member 40 rotates in the direction of the arrow against the spring 43 due to the centrifugal force acting on the weight 42, and the main shaft 1 and the round blade 2 are moved. Join together.

The components shown in FIGS. 10I, II to 11 are provided with the movable coupling member 4 in the recess 39 on the side surface of the boss portion 31 of the round blade 2.
The point of mounting 0 is the same as that of the above-mentioned embodiment, but in this example, no pin is used.

That is, in the case of this example, as shown in FIG. 11, concave portions 39 are provided on both side surfaces of the boss portion 31 of the round blade 2, and the inner periphery of the boss portion 31 at the concave portion 39 is recessed. Accommodation part 4
4 is provided.

As shown in FIG. 11, the member 40 has a U-shaped cross-section having pieces 46 on both sides of the thick portion 45. The thick portion 45 is fitted in the accommodating portion 44 and the concave portions 39 on both sides. Is attached to the main shaft 1.

On the outer side of the thick portion 45, an angled projection 47 is formed.
Is provided. Further, if the weight 42 is provided as shown by a chain line, the centrifugal force can be increased, but the weight 42 may be omitted.

Assuming that the position of the center of gravity of the member 40 is G in II of FIG. 10, when the member 40 rotates at high speed together with the main shaft 1,
Due to the centrifugal force, the corner 50 of the member 40 becomes a fulcrum, and rotates in the direction of the arrow II in FIG.
7 is pressed against the inner surface of the housing portion 44 to integrally connect the main shaft 1 and the round blade 2.

Further, no centrifugal force acts on the member 40 while the main shaft 1 is rotating at a low speed or stopped. Therefore, as shown in FIG. 10I, since the outer protrusion 47 of the thick portion 45 is separated from the inner surface of the housing portion 44, the position of the round blade 2 can be freely changed. 2 position can be changed.

In the example shown in FIGS. 12I and II, the spring 49 is in contact with the outer end of the piece 46. In the case of this embodiment, while the main spindle 1 is stopped, the movable coupling member 40 is moved by the weight of the main spindle 1
Since the lower surface (including the corner portion 50) of the member is in contact with the outer peripheral surface of the member, the movement of the round blade 2 becomes heavy.

When the main shaft 1 rotates at a low speed, the outer projection 47 of the thick portion 45 of the member 40 comes into contact with the inner surface of the housing portion 44 and becomes heavy with a slight centrifugal force. Presses the centrifugal force during low-speed rotation to lift the protrusion 47 from the inner surface of the housing portion 44, thereby facilitating the movement of the round blade 2. Other configurations are the same as those of the embodiment of FIGS.

Also in this case, since the position of the center of gravity of the member 40 is G in II of FIG. 12, when the main shaft 1 rotates at high speed,
The centrifugal force of the member 40 overcomes the pressing force of the spring 49 and rotates outward with the corner 50 as a fulcrum as shown by the arrow II in FIG. The main shaft 1 and the round blade 2 are integrally connected.

In the case of I and II in FIGS. 13 to 16, the boss portion 51 is separated into left and right ring-shaped members 52, 5 as shown in FIG.
The two cylindrical members 54, 53 sandwich both sides of the central portion of the round blade 2 between the two members 52, 53, and the cylindrical portion 54 on one side of the inner periphery of the member 53 is formed between the central hole of the round blade 2 and the ring-shaped member 52 as shown in FIG. At the same time, and are integrally connected to the round blade 2 by bolts, rivets, or the like.

Further, recesses 55 and 56 are provided on a part of both outer surfaces of the members 52 and 53, and an axial groove 57 corresponding to the recesses 55 and 56 is formed on the inner periphery of the cylindrical portion 54. Is provided. 6
Reference numeral 0 denotes a movable coupling member having a weight 61 at one end and a locking piece 62 at the other end, and the weight side of the outer surface of the member 60 is a slope.

The connecting member 60 is provided on the boss 5 of each round blade 2.
Then, the main shaft 1 is inserted into the boss portion 51. In this state, when the main shaft 1 is stopped or rotating at a low speed, the connecting member 60 as shown in FIG.
Since the inner periphery of the main shaft 1 and the outer periphery of the main shaft 1 are parallel to each other, the axial movement of each round blade 2 can be freely performed by the above-described method.

When the positioning of each round blade 2 is completed and the main shaft 1 is rotated at a high speed, each round blade 2 and the connecting member 60 are rotated together therewith, and the member 60 is rotated by the centrifugal force of the weight 61 in FIG.
As shown in II of FIG. 6, the inside of the locking piece 62 forming portion is pressed against the outer circumference of the main shaft 1 by being inclined and the round blade 2 and the main shaft 1 are joined.

In the operation of the above embodiment, the bosses 31 and 51 are held by the holding pieces 37 of the swing levers 9.
The side surfaces of the boss portions 31 and 51 may be pushed and moved in a state where the holding pieces 37 do not contact the outer periphery of the boss portions 31 and 51.

[0052]

According to a first aspect of the present invention, a reciprocating support frame moving along a guide rail provided in parallel with the main shaft as described above has a distal end portion which can freely approach and separate from the main shaft, and a main shaft. A pair of rocking levers in a direction orthogonal to and a driving means for opening and closing the two rocking levers are provided, and the front ends of the two rocking levers are coaxial with the side portions of the respective round blades. Since the engaging piece that engages and disengages with the groove of the integrally formed sheave is provided, the engaging piece of the swing lever can be disengaged with the groove of the sheave of each round blade by opening and closing the swing lever. . Therefore, the circular blade can be moved to a desired position by moving the circular blade with the swinging lever sandwiching the groove wheel of the circular blade.

An engaging lever for preventing the axial movement of the round blade by pivotally engaging the engaging portion of the tip with the slide key of the main shaft by spring pressure is mounted on each groove wheel so as to be swingable. Since the rear end of the swinging lever is freely movable into and out of the groove of the sheave, when the swinging lever is away from the sheave, the round blade is automatically fixed to the main shaft, and the swinging lever is turned round. When the groove wheel of the blade is sandwiched, the rear end of the engaging lever is pressed by the engaging piece of the swinging lever, and the leading end is separated from the slide key, so that the round blade is automatically free from the main shaft. And the movement of the round blade is facilitated.

In the case of the first invention, the same operation and effect can be obtained by using a boss portion having no groove instead of the sheave.

According to a second aspect of the present invention, there is provided a spindle and a plurality of round blades which rotate together with the spindle and are movable in the axial direction. It is applied to a multi-blade cutting machine provided with a movable coupling member that operates by centrifugal force when rotating together with the main shaft and the round blade, so there is no need to keep the main shaft stop position constant, so the main shaft Control is easy and the round blade can be positioned quickly.

[Brief description of the drawings]

FIG. 1 is a partially longitudinal front view of an embodiment.

FIG. 2 is a side view of the above.

FIG. 3 is a partially longitudinal front view of another embodiment.

FIG. 4 is a vertical side view of the above.

FIG. 5 is a partially cut-away longitudinal front view in which a part is similarly enlarged.

FIG. 6 is a side view showing an initial position of the round blade.

FIG. 7 is a side view at the same time when the movement is started.

FIG. 8 is a side view at the same time when the movement is completed.

FIG. 9 is a partially cutaway longitudinal front view showing another example of the round blade coupling means.

FIG. 10 is a partially cutaway longitudinal front view showing another example.

FIG. 11 is a partially cut-out longitudinal side view of the above.

FIG. 12 is a partially cut-away longitudinal front view of another embodiment.

FIG. 13 is a partially cutaway longitudinal front view of another embodiment.

FIG. 14 is a partially cutaway top view of the above.

FIG. 15 is an exploded perspective view in which a part of the above is cut away.

FIG. 16 is an enlarged vertical cross-sectional side view showing the same operation.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main shaft 2 Round blade 3 Slide key 4 Guide rail 5 Support frame 9 Swing lever 11 Drive means 12 Air cylinder 13 Piston rod 14 Groove wheel 15 Groove 16 Engagement piece 22 Engagement lever 24 Engagement part 25 Rear end part 26 Push Spring 31 Boss 36 Movable connecting member 37 Clamping piece 51 Boss 60 Movable connecting member

Continuation of the front page (56) References JP-A-52-70489 (JP, A) JP-A-4-183519 (JP, A) Japanese Utility Model Application No. Sho 51-583 (JP, U) Japanese Utility Model Application Utility Model No. Sho 62-72092 (JP , U) Jikai Sho 56-79319 (JP, U) (58) Field surveyed (Int. Cl. ⁶ , DB name) B23D 19/06 B26D 1/24

Claims (3)

(57) [Scope of request for utility model registration] 1. A multi-blade cutting machine provided with a main shaft having a slide key extending over substantially the entire length, and a plurality of round blades which engage with the slide key, rotate together with the main shaft, and are movable in the axial direction. A reciprocating support frame moving along a guide rail provided in parallel with the main shaft, a tip end portion is made to be able to approach and separate from the main shaft, and a pair of swing levers in a direction orthogonal to the main shaft. A drive means for opening and closing the two rocking levers is provided, and the leading end of the two rocking levers is engaged with a groove of a sheave provided coaxially and integrally with a side of each of the round blades. A detachable engaging piece is provided.
An engaging lever for preventing the axial movement of the round blade is pivotally mounted by engaging the engaging portion at the tip with the slide key of the main shaft by spring pressure, and the rear end of the engaging lever is formed in the groove. A round blade moving device in a multi-blade cutter, wherein the engaging piece of the swing lever pushes a rear end of the engaging lever to separate from a slide key, so that the engaging piece of the swing lever can be moved into and out of a groove of a vehicle. 2. A boss portion having no groove on the outer periphery in place of the groove wheel, and a clamping piece for clamping the outer periphery of the boss portion is provided at the tip end of the swing lever instead of the engaging piece. Item 4. A round blade moving device in the multi-blade cutting machine according to Item 1. 3. A main shaft and a plurality of round blades which rotate together with the main shaft and are movable in the axial direction, and between the main shaft and the shaft hole of the round blade, when the main shaft rotates together with the round blade. In a multi-blade cutting machine provided with a movable coupling member that operates by centrifugal force to integrally couple a main shaft and a round blade, a reciprocating support frame that moves along a guide rail provided in parallel with the main shaft has a tip portion. And a pair of rocking levers in a direction perpendicular to the main shaft, and a driving means for opening and closing the two rocking levers are provided. A round blade moving device in a multi-blade cutting machine, wherein a clamping piece for moving the round blade to a desired position with the boss portion of each round blade interposed is provided on the spindle side.