JP3490115B2 - Slitter device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a slitter device for automatically cutting a sheet (sheet) placed on a sheet feeding plate and discharging the sheet onto a sheet discharging plate.

[0002]

2. Description of the Related Art FIG. 7 is a perspective view showing a conventional slitter device (Japanese Utility Model Publication No. 63-34878). A bundle 51 of sheets to be cut is placed on a paper feed plate 52 provided on the front side of the apparatus. The paper feed plate 52 is provided with a pair of paper guide plates 53 movably in the width direction of the paper feed plate 52, and the interval between the pair of paper guide plates 53 is adjusted according to the width of the sheet. In this case, the pair of paper guide plates 53 are connected via the interlocking mechanism, and are always arranged symmetrically with respect to the widthwise center of the paper feed plate 52. Also,
The guide plate 53 can be fixed to the sheet feeding plate 52 with a fixing screw 54.

The paper feed roller 55 is arranged so as to come into contact with the center of the leading end of the sheet bundle placed on the paper feed plate 52. The paper feed roller 55 is supported by a shaft 57 via a one-way clutch, and the shaft 57 is driven by a drive device to rotate. Also, this shaft 57 has
Pressing rollers 56 are arranged on both sides of the sheet feeding roller 55. A separating plate (not shown) is arranged below the paper feeding roller 55, and the frictional force between the paper feeding roller 55 and the sheet, the frictional force between the separating plate and the sheet, and the sheets are Due to the difference in the frictional force between the
Separate and transport the sheets one by one.

On the downstream side of the sheet feeding roller 55 in the sheet flow direction, a pair of feed rollers 58 are vertically opposed to each other. A sensor (not shown) is provided between the paper feed roller 55 and the feed roller 58, and when the sensor detects the sheet fed by the paper feed roller 55, the rotation of the paper feed roller shaft 57 is stopped. Feed roller 58
Is designed to rotate. As described above, since the one-way clutch is provided between the paper feed roller 55 and the shaft 57, the paper feed roller 55 is moved by the feed roller 58 even if the shaft 57 stops rotating. Rolls into a seat and rotates. When the trailing edge of the sheet passes over the sensor, the feed roller 58 stops rotating and the paper feed roller shaft 5
7 resumes rotation. In this way, the sheets are intermittently delivered from the sheet bundle one by one.

A pair of disc blades 59 are arranged on the downstream side of the feed roller 58 in the sheet flow direction with the sheet conveying path interposed therebetween. The shaft 60 of the disc blade 59 is constantly rotating during the operation of the device. The sheet is cut by the pair of disc blades 59. It should be noted that this disc blade 59 is usually used for the shaft 6
Although it is arranged at the center of 0, the width ratio of the two sheets after cutting can be changed by moving the shaft 60 in the longitudinal direction.

On the downstream side of the disc blade 59 in the sheet flow direction, a pair of discharge rollers 61 are vertically opposed to each other. The discharge roller 61 is also constantly rotating during the operation of the apparatus, and the sheet cut by the disc blade 59 is discharged onto the sheet discharge plate 62 through between the pair of discharge rollers 61. A corner guide 63 is provided on the paper discharge plate 62 to align the discharged sheets.

[0007]

However, the above-mentioned conventional slitter device has the following problems. That is, in the conventional slitter device, the disc blade 5
Since the shaft 60 of No. 9 is relatively long, shaft run-out easily occurs and cutting defects easily occur. Further, since the disc blade 59 is exposed, an operator or the like may inadvertently touch the disc blade 59 and get injured.

The present invention has been made in view of the above problems, and it is possible to suppress shaft runout of a shaft that supports a disc blade, prevent cutting defects, and prevent a worker from carelessly turning a circle. An object of the present invention is to provide a slitter device that can prevent the blade from touching.

[0009]

A slitter device according to a first invention of the present application is a slitter device for cutting a sheet by a pair of rotating disc blades, wherein at least one of rotation shafts of the pair of disc blades is provided. It is composed of a pair of support members that support both ends of the rotating shaft, a connecting portion that connects the pair of rotating shafts at their respective intermediate portions, and a housing portion that covers the disc blade on the downstream side in the sheet flowing direction. And a guide groove through which the sheet cut by the pair of disc blades passes is provided in the reinforcing block.
With the cutting line as the boundary between the one side and the other side.
It is characterized by having a difference . The slitter device according to the second invention of the present application is a slitter device for cutting a sheet by a pair of rotating disc blades, wherein both ends of at least one of the rotating shafts of the pair of disc blades are supported. A pair of support members, a pair of housing portions that cover the disc blades on the downstream side in the sheet flow direction, and support the rotating shafts respectively, and the pair of housing portions between the two. A pair of disc blades, a fixing member that is fixed so that a guide groove through which a sheet cut is provided, and that connects the pair of rotating shafts at their respective intermediate portions, the pair of housing portions Is characterized in that a reinforcing block is constituted by.

[0010]

[Action] In the present Application the first invention, since the rotation axis of the disc blade of a pair are connected by a connecting portion of the reinforcing blocks in each center portion, can suppress the deflection mutual axes of the rotary shaft.
This allows the pair of disc blades to rotate while accurately maintaining a small gap, avoiding cutting defects and suppressing blade wear. Further, in the present invention, the connection
Since the reinforcing block constituted by the housing portion that covers the disk portion and the disc blade on the downstream side in the sheet flow direction is provided, it is possible to prevent an operator or the like from accidentally touching the disc blade, Injuries due to the blade can be reliably prevented. In the present Application the second invention, cover the rotary blade 1
A pair of housing parts support the rotary shaft of the rotary blade, and a fixing member cuts each housing part with a pair of disc blades between them.
Fixed so that there is a guide groove through which the
Runode, since the rotation axis of the disc blade of a pair are connected by a housing part in each of its central part, can be suppressed deflection mutual axes of the rotary shaft. This allows the pair of disc blades to rotate while accurately maintaining a small gap, avoiding cutting defects and suppressing blade wear. Further, in the present invention, since the reinforcing block constituted by the housing portion that covers the disc blade on the downstream side in the sheet flowing direction is provided, it is possible for an operator or the like to touch the disc blade carelessly. It is possible to prevent the injury due to the disc blade. In the first and second inventions of the present application, the reinforcement
The block is provided with a guide groove through which the cut sheet passes so as not to prevent discharge of the cut sheet.

Further, when a reversing mechanism for reversing the moving direction of the sheet is provided and the separating member, the guide plate and the like are supported by the housing portion as shown in an embodiment described later,
The device can be extremely miniaturized. Therefore, it is preferable that the separating member, the guide plate and the like are supported by the housing.

[0012]

Embodiments of the present invention will now be described with reference to the accompanying drawings.

FIG. 1 is a side view showing a slitter device according to an embodiment of the present invention, FIG. 2 is a schematic front view thereof, FIG. 3 is a schematic diagram showing a driving force transmission mechanism thereof, and FIG. 4 is a reinforcement thereof. It is a perspective view which shows the block vicinity.

On the rear surface side (sheet supply side) of the apparatus, a paper feeding / discharging plate assembly 5 in which a paper feeding plate 3 and a paper discharging plate 4 are integrally connected is mounted. That is, fastening shafts 2a and 2b are provided on the upper and lower portions of the device side plate 2 on the device rear surface side, and the hooks 5a are respectively provided at the front end of the paper feed plate 3 and the front end of the paper discharge plate 4 of the paper feed and discharge plate assembly 5. , 5b are provided. The hooks 5a, 5b are attached to the fastening shaft 2a,
The paper feeding / discharging plate assembly 5 is attached to the apparatus main body by engaging with 2b. Therefore, the paper feeding / discharging plate assembly 5 can be easily removed from the apparatus main body. The paper feed plate 3 is provided with a pair of paper feed guides that are movable in the width direction of the paper feed plate 3 in conjunction with each other.
The position of this paper feed guide is adjusted according to the width of the sheet to be processed.

A paper feed roller 6 is arranged in alignment with the front end of the paper feed plate 3 mounted on the main body of the apparatus. The shaft of the paper feed roller 6 (paper feed roller shaft 9) is rotatably supported by the side plate 2. Further, pressing rollers 7 are attached at positions on both sides of the paper feeding roller shaft 9 that sandwich the paper feeding roller 6.
Further, a pulley 8 for transmitting driving force is attached between the paper feed roller 6 and the one pressing roller 7.

A drive shaft 10 is arranged in parallel with the paper feed roller shaft 9 on the downstream side of the paper feed roller shaft 9 in the sheet flow direction. The drive shaft 10 is rotatably supported by the device side plate 2. Endless belt drive pulleys 13 are attached to both sides of the drive shaft 10. Further, between the pulleys 13 of the drive shaft 10, the driving force transmitting pulleys 11, 1 are provided.
2 is attached.

A driving force is transmitted from the motor 1 fixed to the bottom plate of the apparatus to the paper feed roller shaft 9 and the drive shaft 10. That is, the pulley 21 is fixed to the rotary shaft of the drive motor 1. Further, above the pulley 21, a reduction pulley 22 configured by connecting a large-diameter pulley and a small-diameter pulley is arranged. A drive belt 23 is stretched between the pulley 21 and the large-diameter pulley of the reduction pulley 22. A drive belt 24 is stretched between the small-diameter pulley of the reduction pulley 22 and the pulley 12 fixed to the drive shaft 10. Further, a drive belt 25 is stretched between the pulley 11 fixed to the drive shaft 10 and the pulley 8 fixed to the paper feed roller shaft 9. Motor 1
Is transmitted to the drive shaft 10 and the paper feed roller shaft 9 via these pulleys and drive belt.

Below the paper feeding roller shaft 9, a driven pulley shaft 15 is arranged in parallel with the paper feeding roller shaft 9. The driven pulley shaft 15 is also rotatably supported by the device side plate 2 (support member). A driven pulley 16 is attached near both ends of the driven pulley shaft 15, and a reinforcing block 30 is rotatably arranged in the center of the driven pulley shaft 15. The reinforcement block 30 includes a lower reinforcement block member 30a and an upper reinforcement block member 30.
b is connected by a connecting bolt.

5 (a) and 5 (b) are a perspective view and a side view showing the upper reinforcing block member 30b, respectively. Bearings 34 are provided at both ends of the reinforcing block member 30b in the width direction. A space in which the disc blade is arranged is provided between the bearings 34. A step is provided along the center line on the lower surface side of the upper reinforcing block member 30b. A curved surface 32a curved in an upward chord shape on one side and a lower chord shape on the other side with the step as a boundary. The curved surface 32b is curved. The stepped portion is provided with a bolt hole 33 for passing the connecting bolt. On the other hand, the lower reinforcing block member 30a is also formed in substantially the same manner as the upper reinforcing block member 30b. The reinforcing block 30 is configured by facing the curved surfaces of the two reinforcing block members 30a and 30b and connecting the curved surfaces so that a gap is formed between the facing curved surfaces. The gap between the block member 30a and the upper reinforcing block member 30b is a discharge guide groove 30c through which a sheet cut into two by a disc blade described later passes.

Lower disc blade 31a and upper disc blade 31b
Are arranged in the spaces provided in the lower reinforcing block member 30a and the upper reinforcing block member 30b, respectively.
That is, the lower disc blade 31a is attached to the lower reinforcing block member 30.
It is fixed to the driven pulley shaft 15 in the space a. In addition, the upper reinforcing block member 30 b has a bearing roller shaft 35 that is shorter than the driven pulley shaft 15.
It is rotatably supported by 4. The transport roller shaft 35 is arranged parallel to the driven pulley shaft 15, and the transport rollers 36 are fixed to both ends thereof. The transport roller 36 is made of metal and has a relatively large diameter and a smooth peripheral surface. The reinforcing block 30 includes the driven pulley shaft 15
Also, it acts as a connecting member that connects the transport roller shafts 35 and maintains a constant interval between these shafts, and reinforces the shaft strength to suppress the occurrence of bending and prevent mutual shaft runout of these shafts. To do. That is, the reinforcing block 30 is the driven pulley shaft 1
5 and the conveying roller shaft 35, and a housing that covers the connecting member and the disc blades 31a and 31b.

An endless belt 37 is stretched between the drive pulley 13, the driven pulley 16 and the conveying roller 36.
That is, the drive pulley 13 and the driven pulley 16 come into contact with the inner surface of the endless belt 37, and the conveying roller 36 moves the drive pulley 13
The outer surface of the endless belt 37 is contacted between the driven pulley 16 and the driven pulley 16 to press the endless belt 37.
In this case, the contact pressure between the transport roller 36 and the endless belt 37 can be adjusted by changing the angle of the eccentric cam 38 provided in contact with the device rear surface side of the lower reinforcing block member 30a. There is.

Further, the upper reinforcing block member 30b includes
Guide plates 43 and 44 are fixed via the arm plates 41 and 42. A separating plate 46 is provided at a position where the guide plate 44 contacts the sheet feeding roller 6. Further, on the guide plate 43, the guide plate 45 is provided so as to face the guide plate 43.
Is provided.

Furthermore, the apparatus side plate 2 is provided with a notch 17 corresponding to the sheet conveying path. That is,
The notch 17 is provided so that the contact portion between the paper feed roller 6 and the separating plate 46, the transport roller 36, and the paper discharge guide groove 30c of the reinforcing block 30 are exposed.

Next, the operation of the slitter device constructed as described above will be described. The bundle of sheets to be cut is placed on the sheet feeding plate 3 of the sheet feeding / discharging plate assembly 5. Since the sheet feeding plate 3 is inclined so that the rear end side of the sheet is arranged upward, the sheet descends on the sheet feeding plate 3 due to gravity, and the front edge thereof abuts the guide plate 44. When the motor 1 starts to rotate, the driving force is transmitted to the paper feed roller shaft 9 via the pulley and the drive belt, and the paper feed roller 6 rotates. By the rotation of the sheet feeding roller 6, the uppermost sheet in the sheet bundle that is in contact with the sheet feeding roller 6 advances and passes between the sheet feeding roller 6 and the separating plate 46. At this time, when a plurality of sheets come into close contact with the uppermost sheet and enter between the sheet feeding roller 6 and the separating plate 46, the frictional force between the sheet feeding roller 6 and the sheet, the separating plate 46 and the sheet are separated from each other. Due to the frictional force between the sheets and the difference in the frictional force between the sheets, the lower sheet is separated by the separating plate 46.
Is stopped at the position of, and only the uppermost sheet is conveyed by the sheet feeding roller 6. This sheet advances between the guide plates 43 and 45, and is then sandwiched between the transport roller 36 and the endless belt 37. Then, while being sandwiched between the transport roller 36 and the endless belt 37, the periphery of the transport roller 36 is rotated about 1/2 and the transport direction is reversed. At this time, the sheet is cut at the center portion in the width direction by the lower disc blade 31a and the upper disc blade 31b. Then, one sheet passes through one of the discharge guide grooves 30c separated in the reinforcing block 30, the other sheet passes through the other discharge guide groove 30c of the reinforcing block 30, and both sheets are placed on the discharge plate 4. Is discharged. Since each sheet advances along different discharge guide grooves 30c and is discharged onto the discharge plate 4, it is possible to prevent a part of the sheets cut on the discharge plate 4 from overlapping. If some of the cut sheets overlap,
After the work is completed, the worker needs to manually re-sort the work, which is complicated. In this way, the sheets on the paper feed plate 3 are continuously cut.

In the apparatus of this embodiment, a sheet having a width wider than the width of the apparatus body can be cut. That is, in the apparatus of this embodiment, as shown in FIG. 6, when the guide plate that restricts the width of the sheet 47 placed on the sheet feeding plate 3 is moved, the sheet 47 that is wider than the main body of the apparatus is fed. Three
Can be placed on top. The side plate of the device of this embodiment includes
As described above, since the notches 17 are provided corresponding to the sheet conveying path, both widthwise end portions of the sheet 47 are conveyed in a state of protruding from the notches 17 to the side of the apparatus. Even in the case of such a large size sheet 47, the sheet is cut while the both sides of the sheet 47 are held by the conveying roller 36 and the endless belt 37, so that the sheet 47 can be cut at a predetermined position.

If a jam or the like occurs during the operation of the apparatus, the jammed paper can be easily removed by rotating the eccentric cam 38 to loosen the contact pressure between the conveying roller 36 and the endless belt 37.

In the apparatus of this embodiment, the reinforcing block 3
0, the driven pulley shaft 15 is attached to both sides of the lower disc blade 31a.
Since the transport roller shaft 35 is connected to the driven roller shaft 35, the distance between the driven pulley shaft 15 and the transport roller shaft 35 is always kept constant, and the shaft strength is reinforced to prevent the shaft from bending. Therefore, it is possible to surely avoid the cutting failure due to the shaft runout. Further, since the reinforcing block 30 covers the rear surface side of the disc blades 31a and 31b, the operator or the like carelessly operates the disc blades 31a and 31b when the apparatus is in operation .
It is possible to prevent touching 31b . Further, in the apparatus of this embodiment, the sheet conveying direction is reversed by the conveying roller 36 and the endless belt 37, and the separating plate 46 and the sheet feeding guides 43 and 44 are supported by the reinforcing block 30. There is also an effect that the size can be significantly reduced.

[0028]

As described in the foregoing, according to the present invention,
Reinforcing blocks connect the rotating shafts of a pair of disc blades.
Runode, it is possible to prevent the cutting failure due to deflection mutual axis between times guinea. Further , since the downstream side of the disc blade in the sheet flow direction is covered by the housing portion , it is possible to prevent an operator from accidentally touching the disc blade and being injured.

[Brief description of drawings]

FIG. 1 is a side view showing a slitter device according to an embodiment of the present invention.

FIG. 2 is a schematic front view of the same.

FIG. 3 is a schematic view showing the driving force transmission mechanism of the same.

FIG. 4 is a perspective view showing the vicinity of the reinforcing block.

5A and 5B are upper reinforcing block members 3 respectively.
It is a perspective view and a side view showing 0b.

FIG. 6 is a perspective view showing a state in which a sheet having a width wider than the device width is processed.

FIG. 7 is a perspective view showing a conventional slitter device.

[Explanation of symbols]

1; motor 2; Device side plate 3,52; Paper feed plate 4; Paper ejection plate 5: Paper feeding / discharging plate assembly 6,55; Paper feed roller 13; Drive pulley 15; Driven pulley shaft 16; driven pulley 17; cutout 23, 24, 25; drive belt 30; Reinforcing block 31a, 31b, 59; disk blade 36; Transport roller 37; Endless belt 38; Eccentric cam 46; Separation board

─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-2-250793 (JP, A) JP-A-3-294199 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) B26D 1/24 B26D 7/18 B26D 7/22

Claims (2)

(57) [Claims] 1. A slitter device for cutting a sheet by a pair of rotating disc blades, comprising a pair of supporting members for supporting both ends of at least one of the rotating shafts of the pair of disc blades. A reinforcing block including a connecting portion that connects the pair of rotating shafts at their respective intermediate portions and a housing portion that covers the disc blade on the downstream side in the sheet flowing direction, and the reinforcing block includes: A guide groove through which the sheet cut by the pair of disc blades passes is provided, and the guide groove is a sheet groove.
Between the one side and the other side with the cutting line of
A slitter device having a step . 2. A slitter device for cutting a sheet by a pair of rotating disc blades, comprising a pair of supporting members for supporting both ends of at least one of the rotating shafts of the pair of disc blades. , A pair of housing portions that cover the respective disc blades on the downstream side in the sheet flow direction and axially support the rotating shafts respectively, and the pair of housing portions are provided between the two by the pair of disc blades. A fixing member that is fixed so that a guide groove through which the cut sheet passes is provided and that connects the pair of rotating shafts at their respective intermediate portions, and a reinforcing block is configured by the pair of housing portions. A slitter device characterized in that