JPH0811087A - Movable slitter - Google Patents

Abstract

(57) [Summary] [Purpose] A movable slitter moves the first blade to the release position when not in use, and always sets it in the same positional relationship with the second blade when in use. [Structure] Having an upper blade 14 and a lower blade 12, the blade surface 14A of the upper blade 14 is set to a cutting position where it contacts the blade surface 12A of the lower blade 12 when in use, and the upper blade 14 is in the cutting position when not in use. Center slitter that can be released from the upper blade 14
The movable holder 22 to which is attached is attached to the fixed holder 24 via the support shaft 26 so as to be capable of advancing and retreating in the A and B directions and rotating in the C and D directions.
The upper blade 14 can be set to the cut position by abutting against the reference surface 24A of No. 4, the nut 28 is loosened, the movable holder 22 is moved in the B direction, and separated, and the upper blade 14 is moved to the release position in the C direction. it can.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a movable slitter, and more particularly to a movable slitter such as a center slitter which can be selectively used to divide a continuous form to be enclosed along a conveying direction in an enclosing and sealing machine.

[0002]

2. Description of the Related Art In order to save labor and rationalize the work of shipping postal items, etc., an enclosing seal that can automatically perform a sealing operation after putting a predetermined number of documents to be sent together in an envelope Machine is being developed.

FIG. 7 is a schematic diagram showing an example of such an automatic enclosing and sealing machine. This enclosing and sealing machine includes a sheet cutting device 101, a pool device 102, and a folding device 10.
3, a sheet encapsulation device 104, and a sealing device 105 are provided, and the work in each of the devices 101 to 105 described below is controlled by a control device (not shown),
It's done automatically.

In the above sheet cutting device 101,
The continuous form S is cut by the cutter unit 110 into individual cut sheets S1 each having a predetermined length and the addresses are separately printed, and the cut sheets S1 are sequentially conveyed by the conveyance rollers 111 to the next pool device 102. In the pool device 102, the single-cut sheets S1 are stacked on the belt conveyor 131 by the transport rollers 130 and pooled, and when the predetermined amount is reached, the belt conveyor 131 is driven and transported to the next folding device 103. It

In the folding device 103, the single-cut sheet S1 is sent to the folding machine 133 by the conveying roller 132, folded into three folds or four folds by the folding machine 133, and then conveyed to the next sheet inserting device by the conveying roller 134. 10
4 is transported.

In the sheet inserting apparatus 104, the folded cut sheet S1 is conveyed by the conveying rollers 135, 136 and 137.
The sheet is sent to the sheet inserting machine 138 by the sheet feeding machine 138, is inserted into the envelope E sent from the cassette 139 by the supply roller 140, and is conveyed to the next sealing device 105 as an enclosed material.

In the enclosing device 105, the gluing portion of the envelope E in which the single-cut sheet S1 folded by the enclosing machine 141 is enclosed is moistened and folded back, and then the envelope E is sealed.

In the sheet cutting device 101,
A center slitter may be used, for example, to equally divide the continuous form S along the conveyance direction. This division process may be necessary or unnecessary depending on the type of the continuous form S.

A center slitter used for such division processing is schematically shown in the front view of FIG. 8A viewed from the conveying direction and the side view of FIG. 8B viewed from a direction orthogonal to the center slitter. There is something that indicates.

The center slitter has a lower blade 12 fixed to the rotary shaft 10 and an upper blade 14 which is rotated while being in contact with the blade surface 12A of the lower blade 12. The upper blade 14 is fixed to the fixed shaft 16 by a fixing screw 18,
Further, by loosening the fixing screw 18, it is possible to move back and forth in the direction along the fixing shaft 16 (both AB directions indicated by arrows in the figure) and to be attached to the holder 20 rotatable about the fixing screw 18. There is.

The center slitter shown in FIG.
When the upper blade 14 is set at the cutting position shown in (A) and (B), the fixing screw 18 is loosened when not in use, and the holder 20 is moved in the B direction for safety and damage prevention. After separating 14A from the blade surface 12A of the lower blade 12, the upper blade 14 is rotated in the direction C shown in FIG.
Is moved to a release position when not in use, and fixed by tightening the fixing screw 18 at that position.

Thereafter, when the center slitter is used again, conversely, the fixing screw 18 is loosened and the holder 20
Is rotated in the D direction to return the tip of the upper blade 14 to a predetermined position where the tip of the upper blade 14 overlaps the lower blade 12, and then the holder 20 is moved in the A direction to press the upper blade 14 against the lower blade 12 with an appropriate pressing force. Then, the fixing screw 18 is tightened in the state of being contacted with to set the cutting position.

[0013]

However, in the above-mentioned conventional center slitter, since the upper blade 14 must be moved integrally with the holder 20, the upper blade can be moved from the cut position to the release position when not in use. On the contrary, the operation of moving from the release position to the cutting position and resetting is troublesome, and in the case of resetting the upper blade, the upper blade 14 is appropriately pressed against the lower blade 12. Since it is difficult to bring them into contact with each other, it causes problems such as poor sharpness and shortened blade life.

The present invention has been made to solve the above-mentioned conventional problems. It is easy to set the first blade at the cutting position where it contacts the second blade when in use, and move it to the release position when not in use. An object of the present invention is to provide a movable slitter that can be surely executed and that can accurately set the first blade to the cutting position where the contact state with the second blade is the same.

[0015]

The present invention includes a first blade and a second blade.
The blade has a blade, and when used, the blade surface of the first blade is set to a cutting position where it contacts the blade surface of the second blade, and when not used, the first blade is moved from the cutting position to the release position. In the movable slitter, the first blade is attached to the movable holder, and the movable holder is positioned at a predetermined position, and is axially moved back and forth through the support shaft and rotated about the support shaft. And is installed so that
A setting means for bringing the movable holder into contact with the reference surface of the fixed holder, setting the first blade at the cutting position, separating the movable holder from the reference surface, and releasing the contact between the first blade and the second blade; The above-described problems are solved by adopting the configuration provided.

According to the present invention, in the above-mentioned movable slitter, the setting means has a biasing means for biasing the movable holder in a direction of separating it from the reference surface of the fixed holder.

According to the present invention, in the movable slitter, the urging means is an elastic member embedded in the fixed holder and having a tip member for pressing the movable holder.

According to the present invention, in the above movable slitter, when the movable holder is separated from the reference surface of the fixed holder and rotated about the support shaft, the first blade moves to the cutting position and the releasing position in the rotating direction. At least the positioning means for positioning the cutting position is provided.

According to the present invention, in the above movable slitter, the positioning means has one or more elastic members embedded in the fixed holder and having a tip member for pressing the movable holder.
And a concave portion provided at a predetermined position of the movable holder with which the tip member is engaged.

[0020]

According to the present invention, the first blade is attached to the movable holder, and the movable holder moves forward and backward in the axial direction through the support shaft to the fixed holder at a predetermined position and rotates about the support shaft. Is attached so that the movable holder can be tightened to bring it into contact with the reference surface of the fixed holder.
When the first blade is at the cutting position, the blade is set at the cutting position, the movable holder is separated from the reference surface, and the setting means for releasing the contact between the first blade and the second blade is provided. After loosening the tightening of the movable holder and separating it from the fixed holder, after the blade surface of the first blade (for example, the upper blade) is separated from the second blade (for example, the lower blade), the movable holder is attached to the spindle. The movable slitter is switched from the use state to the non-use state by rotating it to the center to move the first blade to the release position, and tightening the movable holder at that position to abut and fix the movable holder. Can be done easily and reliably.

On the other hand, when the movable slitter is switched from the non-use state to the use state, when the first blade is in the release position, the fastening of the movable holder is loosened, it is separated from the fixed holder, and then it is rotated in the opposite direction. After moving and returning to the original position, the movable holder is tightened and brought into contact with the reference surface of the fixed holder, so that this reference surface is fixed at a fixed position by fixing the fixed holder at a predetermined position during the initial setting. As described above, it is possible to easily and surely reset the first blade to the cutting position accurately. Therefore, once the fixing holder is fixed at an appropriate position, the first
Since the first blade can always be returned to the same position without strictly adjusting the position of the blade, it is possible to always set a constant sharpness.

When the movable holder is rotated, the contact between the first blade and the second blade can be released. Therefore, for example, when returning the first blade to the cutting position, it may collide with the second blade and be damaged. It can be prevented.

Further, in the present invention, when the setting means has a biasing means for biasing the movable holder in the direction of separating it from the reference surface of the fixed holder, the movable holder can be simply released by tightening the setting means. Since it can be separated from the reference surface of the fixed holder, the first blade can be reliably separated from the second blade. Therefore, when the first blade is returned to the cutting position, the first blade and the second blade are erroneously It is possible to reliably prevent the vehicle from colliding.

Further, in the present invention, when the biasing means is an elastic member embedded in the fixed holder and having a tip member for pressing the movable holder, the movable holder can be reliably separated from the fixed holder. Not only can it be rotated, but it can also be rotated about a support shaft.

Further, in the present invention, when the movable holder is separated from the reference surface of the fixed holder and rotated about the support shaft, the first blade is positioned at at least the cut position of the cut position and the release position in the rotating direction. If the positioning means is provided, the first blade can be easily positioned at least at the cutting position in the rotation direction by simply rotating the movable holder in a state in which the movable holder is separated from the fixed holder. By tightening the movable holder and bringing it into contact with the reference surface of the fixed holder, you can easily set it to the regular cutting position, and if it can also be positioned at the release position, move it to the release position of the first blade. Can also be moved easily and easily.

Further, in the present invention, the positioning means comprises:
When the movable holder is composed of one or more elastic members embedded in the fixed holder and having a tip member for pressing the movable holder, and a concave portion provided at a predetermined position of the movable holder with which the tip member engages, By using the elastic member for urging, for example, the first blade can be reliably positioned at least at the set position in the rotation direction.

[0027]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1A is a schematic front view showing a center slitter (movable slitter) according to one embodiment of the present invention,
(B) is a schematic side view thereof.

The center slitter of this embodiment is the same as that shown in FIG.
As in the case of (A) and (B), the continuous form S is installed in the conveyance path of the sheet cutting device 101 of the enclosing and sealing machine as shown in FIG. Used for.

FIG. 1 shows the state of use. This center slitter has an upper blade (first blade) 14 and a lower blade (second blade).
Blade) 12 and, when in use, the upper blade 14, the blade surface 1
4A comes in contact with the blade surface 12A of the lower blade 12 and is set to the cutting position shown in FIG. 1, and the upper blade 14 can be moved from the cutting position to the release position when not in use when not in use. ing.

That is, the upper blade 14 is rotatably attached to the movable holder 22, and the movable holder 22 is fixed to the fixed shaft 16.
To the fixed holder 24 which is accurately positioned and fixed by the fixing screw 18 through the support shaft 26 in the axial direction (A direction, B direction) and the rotation in the C direction and the D direction about the support shaft 26. It is mounted so that it can move.

Further, a set nut (set means) 28 is screwed onto the support shaft 26, and the nut 28 is tightened to move the movable holder 22 in the direction A by the enlarged diameter portion 28A to fix the holder 22. By contacting the reference surface 24A of the holder 24, the upper blade 14 can be set to the cutting position, and conversely, by loosening the setting nut 28, the movable holder 22 is moved in the B direction from the reference surface 24A. The contact between the upper blade 14 and the lower blade 12 can be released by separating them from each other. At this time, a stopper 30 is provided to prevent the setting nut 28 from being loosened more than necessary.

Further, as shown in the enlarged partial sectional view of FIG. 2, the fixed holder 24 is embedded in the fixed holder 24 as an urging means for urging the movable holder 22 in a direction away from the reference surface 24A. Two ball plungers (elastic members) 32 are provided. This ball plunger 32
As shown in a further enlarged view in FIG. 3, it is composed of a ball (tip member) 34 for pressing the movable holder 22 in the B direction, and a spring 32A connected to the ball 34. As will be described later, a total of four ball plungers are arranged substantially symmetrically. Therefore, only by loosening the setting nut 28, the movable holder 22 is spontaneously moved in the B direction and separated from the fixed holder 24 by the gap L, as shown in FIG.

In the center slitter, when the set nut 28 is loosened to move the movable holder 22 away from the reference surface 24A of the fixed holder 24 and then rotated in the C direction, the upper blade 14 is rotated. Positioning means for positioning the cutting position and the release position are provided. This positioning means is embedded in the inside of the fixed holder 24 as described above.
Ball plunger 32 and the ball plunger 32
And a V cut (recess) 36 provided at a predetermined position of the movable holder 22 with which the ball 34 of FIG.
One pair is used for each of the set position and the release position.

FIG. 5 shows the positional relationship between the ball plunger 32 and the V-cut 36 at the cutting position.
FIG. 2 is an enlarged partial side view seen from the left side of FIG. 1A, and FIG. 2 corresponds to the AA sectional view of FIG.

As shown in FIG. 5, when the upper blade 14 is in the cutting position, the two opposing setting balls 34A are in the releasing position so as to engage with the setting V-cuts 36A. At times, as shown in FIG. 6, two release balls 34B are similarly engaged with the release V-cut 36B.

Next, the operation of this embodiment will be described.

First, the ball 34 of the ball plunger 32
At a position where A is engaged with the set V cut 36A, the set nut 28 is tightened to bring the movable holder 22 into close contact with the reference surface 24A of the fixed holder 24, and then,
The fixing holder 24 with the fixing screw 18 loosened
And set the upper blade 14 at the cutting position where the contact pressure is appropriate for the lower blade 12, and then the fixing screw 18
By fixing the fixed holder 24 with, the center slitter is set to the state shown in FIG. 1 and used.

When the center slitter is not used, the set nut 28 is loosened to separate the movable holder 22 from the fixed holder 24, and then the movable holder 22 is rotated in the C direction of FIG. 1B to release balls 34B. Is for release V
The upper blade 14 is set to the release position by engaging the cut 36B and tightening the setting nut 28 at the position.

After that, when the center slitter is used again, the set nut 28 is loosened to move the movable holder 22.
Is separated from the fixed holder 24, and then is rotated in the D direction so that the set ball 34A moves to the set V cut 36.
The upper blade 14 is set at the cutting position by tightening the setting nut 28 at the position engaged with A, bringing the movable holder 22 into contact with the reference surface 24A, and bringing them into close contact.

According to this embodiment, first, the fixing holder 24 is fixed to the fixing screw 24 so that the upper blade 14 comes to the correct cutting position.
By fixing at 8, the reference plane 2 for the cutting position
Since the positional relationship of 4A is accurately defined, when the upper blade 14 is subsequently reset to the cutting position, the movable holder 22 separated from the fixed holder 24 is rotated from the release position to the setting position to set it. It is possible to always set the same state by only tightening the nut 28 for use.

Further, according to this embodiment, the set nut 2
The movable holder 22 can be reliably separated from the fixed holder 24 by the ball plunger 32 simply by loosening 8, and the movable holder 22 can be accurately positioned at the cut position and the release position only by rotating in that state. Further, according to the present embodiment, there is an advantage that the ball plunger 32 can be used to urge the movable holder 22 in the B direction and to perform positioning when rotating the movable holder 22.

Although the present invention has been specifically described above, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the invention.

For example, in the above embodiment, the ball plunger is shown as the urging means for separating the movable holder, but the present invention is not limited to this, and other urging means may be used.
Further, the biasing means is not always necessary.

The number of ball plungers is not limited to four in total, and may be one to three or five or more, and the positioning means is also a combination of the ball plunger and the V-cut portion. It is not limited to

Although the first blade is the upper blade and the second blade is the lower blade, the positional relationship of the blades is not limited.

Further, the movable slitter of the present invention is not limited to the center slitter applied to the enclosing and sealing machine.

[0048]

As described above, according to the present invention,
In the movable slitter, the operation of setting the first blade to the cutting position where it comes into contact with the second blade when in use and moving it to the release position when not in use can be performed easily and reliably, and moreover, the first blade with respect to the second blade It is possible to always set the cutting position in a constant contact state.

Further, according to the present invention, when the setting means has the urging means for urging the movable holder in the direction of separating the movable holder from the reference surface of the fixed holder, the tightening by the setting means is simply released. Since the movable holder can be separated from the reference surface of the fixed holder, the first blade can be reliably separated from the second blade, so that when the first blade is returned to the cutting position, the first blade and the first blade are erroneously separated from each other. It is possible to reliably prevent the two blades from colliding.

Further, according to the present invention, when the urging means is an elastic member embedded in the fixed holder and having a tip member for pressing the movable holder, the movable holder is reliably separated from the fixed holder. In addition to being able to rotate, it can also be rotated around the support shaft.

Further, according to the present invention, when the movable holder is separated from the reference surface of the fixed holder and is rotated about the support shaft, the first blade is at least in the cutting position and the releasing position in the rotating direction. In the case where the positioning means for positioning the movable holder is provided, the first blade can be easily positioned at least at the cutting position in the rotating direction by simply rotating the movable holder in a state of being separated from the fixed holder. If the movable holder can be tightened at the position and brought into contact with the reference surface of the fixed holder, it can be easily set to the regular cutting position, and if it can also be positioned at the release position, it will move to the release position of the first blade. Can also be moved easily and easily.

Furthermore, according to the present invention, the positioning means comprises:
When the movable holder is composed of one or more elastic members embedded in the fixed holder and having a tip member for pressing the movable holder, and a concave portion provided at a predetermined position of the movable holder with which the tip member engages, By using the elastic member for urging, for example, the first blade can be reliably positioned at least at the set position in the rotation direction.

[Brief description of drawings]

FIG. 1 is a front view and a side view showing a schematic configuration of a center slitter according to an embodiment of the present invention.

FIG. 2 is an enlarged sectional view showing a main part of the center slitter.

FIG. 3 is an enlarged cross-sectional view showing a partially broken ball plunger.

FIG. 4 is another enlarged cross-sectional view showing a main part of the center slitter.

FIG. 5 is an enlarged side view showing the relationship between the ball plunger and V-cut when set.

FIG. 6 is an enlarged side view showing the relationship between the ball plunger and V-cut at the time of release.

FIG. 7 is an explanatory diagram showing a schematic configuration of a sealing and enclosing machine.

FIG. 8 is a front view and a side view showing a schematic configuration of a conventional center slitter.

[Explanation of symbols]

 10 ... Rotating shaft 12 ... Lower blade 12A, 14A ... Blade surface 14 ... Upper blade 16 ... Fixed shaft 18 ... Fixing screw 20 ... Holder 22 ... Movable holder 24 ... Fixed holder 24A ... Reference surface 26 ... Spindle 28 ... Set nut 30 ... Stopper 32 ... Ball Plunger 32A ... Spring 34 ... Ball 36 ... V Cut

Claims (5)

[Claims] 1. A first blade and a second blade, wherein the first blade is in use.
Set the blade surface of the blade to the cutting position where it contacts the blade surface of the second blade, and move the first blade from the cutting position to the release position when not in use. A fixed holder, which is attached to the holder and in which the movable holder is positioned at a predetermined position, is attached via a support shaft so as to be movable back and forth in the axial direction and rotatable about the support shaft. A setting means for bringing the movable holder into contact with the reference surface of the fixed holder, setting the first blade at the cutting position, separating the movable holder from the reference surface, and releasing the contact between the first blade and the second blade; A movable slitter that is equipped with. 2. The movable slitter according to claim 1, wherein the setting means has a biasing means for biasing the movable holder in a direction of separating it from the reference surface of the fixed holder. 3. The movable slitter according to claim 2, wherein the urging means is an elastic member having a tip member that is embedded in the fixed holder and presses the movable holder. 4. The first blade according to claim 1, wherein when the movable holder is separated from the reference surface of the fixed holder and is rotated about the support shaft, the first blade is at least at the cut position of the cut direction and the release position in the rotation direction. A movable slitter comprising positioning means for positioning. 5. The positioning means according to claim 4, wherein at least one elastic member embedded in the fixed holder and having a tip member for pressing the movable holder and a predetermined position of the movable holder with which the tip member engages. A movable slitter comprising a recess provided therein.