JPH09123087A - Raising-lowering mechanism of paper depressing member in paper cutter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To raise and lower a paper depressing member in the vertical direction to a paper surface. SOLUTION: A rail 14 is arranged on a baseplate 11, and a slider 15 having an edge holder 55 is movably installed on this rail 14. A sliding bracket 21 is arranged in the rail 14 so as to be movable in the shaft direction, and a sliding member 25 to which a paper depressing member 26 is fixed is installed on this sliding bracket 21. The sliding member 25 is arranged so as to be immovable in the shaft direction by a pair of columns 30, and inclined faces 47 are formed in under surface parts on both sides of it. Rollers 39B and 39C supported with the sliding bracket 21 support the sliding member 25 in a condition of contacting with the inclined faces 47. When the rollers 39B and 39C move by a shaft directional movement of the sliding bracket 21, the sliding member 25 can be raised and lowered in the vertical direction by the inclined faces 47 contacting with these.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mechanism for raising and lowering a paper holding member in a paper cutter.
The present invention relates to a mechanism for elevating and lowering a paper pressing member that can raise and lower a paper pressing member in a direction substantially perpendicular to a base plate.

[0002]

2. Description of the Related Art Conventionally, a paper cutter for simultaneously cutting a large number of sheets of paper has been used. The paper cutter includes a rail arranged on one side of a base plate, a slider movably provided along the rail, and a circular blade rotatably mounted in the slider. ing. Here, a paper pressing member is provided on the lower surface side of the rail, and a gap between the paper pressing member and the base plate can be adjusted by operating a lever provided at one end of the rail. ing.

In the paper cutter, the paper is inserted into the gap with the paper holding member slightly raised from the base plate, and then the paper holding member is lowered to fix the position of the paper. By moving the slider in this state, the rotary blade rolls on the paper surface, whereby the paper can be cut linearly.

[0004]

However, the lifting and lowering of the paper holding member in such a paper cutter employs, for example, a parallelogram link structure. When the lever is operated, the paper holding member moves up and down on the paper. On the other hand, it does not go up and down straight along the vertical direction, but goes up and down as a movement trajectory in a direction inclined by a predetermined angle from the perpendicular. Therefore, when the paper pressing member is lowered from the position above the base plate, a tendency is exerted on the paper in the side sliding direction. This results in a case where the paper to be cut is pressed in a laterally displaced state, and in particular, when a large number of papers are cut at once, it is inconvenient that their edges are difficult to align. .

The present invention has been devised in view of the inconvenience of the conventional example, and has an object to make the moving direction of the paper pressing member a straight direction along the direction perpendicular to the paper surface. Accordingly, it is an object of the present invention to provide an elevating mechanism of a paper pressing member which can prevent positional deviation of a sheet to be cut and perform good edge alignment.

[0006]

In order to achieve the above object, the present invention is to move a slider along a rail on a base plate so that a paper pressing member disposed on the lower surface side of the rail and the base. In a paper cutter capable of cutting paper inserted between a plate and a plate, a slide bracket that is movable in the axial direction relative to the rail is provided in the rail, and a predetermined conversion mechanism is provided in the slide bracket. A shaft member to which the paper pressing member is fixed is mounted via the shaft holder, and the shaft member is provided so as to be vertically movable in the vertical direction by the axial movement of the slide bracket. With this configuration, the moving direction of the slide bracket is converted to a substantially vertical direction by the presence of the conversion mechanism. Therefore, the moving direction of the shaft member attached to the slide bracket can be raised and lowered in the direction orthogonal to the surface of the base plate by the conversion mechanism, and consequently the paper pressing member fixed to the shaft member can be raised and lowered in the same direction. Becomes Therefore, when the paper pressing member is lowered, the paper surface is prevented from being shifted in the horizontal direction, and the edges can be finely aligned particularly when a large number of papers are cut at the same time.

The converting mechanism is provided on a support column for restricting the axial movement of the shaft member, a roller supported by the slide bracket so as to embrace the shaft member, and a lower surface side of the shaft member. At the same time, it is preferable that the peripheral surface of the roller is formed so as to be in contact with the inclined surface. According to this configuration, when the slide bracket is moved, the roller can roll due to contact with the inclined surface of the shaft member, so that the slide bracket can be smoothly moved in the axial direction while avoiding generation of excessive frictional resistance. Permissible.

It is preferable that the slide bracket further includes a roller that comes into contact with the base plate and rolls on the base plate. By adding the roller,
The slide bracket can be easily moved on the upper surface of the base plate, so that the operation of the lever for raising and lowering the paper holding member can be easily performed.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of a paper cutter to which a paper holding member according to the present invention is applied will be described below in detail with reference to the drawings.

FIG. 1 is a schematic perspective view of a paper cutter. In this figure, the paper cutter 10
Is a plate-shaped base plate 11, a pair of rail supports 12, 13 relatively arranged on one side of the base plate 11, a rail 14 bridged between the rail supports 12, 13, The rail 14 is provided with a slider 15 movably mounted along the rail 14.

As shown in FIG. 2, the rail 14 is provided in an open shape on the lower side, and is combined with the rail 14 so as to be movable relative to the rail 14 along the axial direction. A slide bracket 21, a slide holder 23 arranged in the slide bracket 21, a slide member 25 forming a shaft member, and a paper pressing member 26 fixed to the lower surface side of the slide member 25 are mounted.

Holes 28 are formed on both sides of the rail 14 in the longitudinal direction. A bolt 29 is inserted into the hole 28 from above, and the bolt 29 is screwed into an upper end of a column 30 disposed in the rail supports 12 and 13, whereby The rail 14 can be fixed in a state of being bridged between the rail supports 12 and 13.

The slide bracket 21 has an axial length relatively longer than that of the rail 14, and is provided in an inverted U-shape with a downward opening. The slide bracket 21 includes a plurality of punched portions 33 on an upper surface portion, and includes a lever 34 that stands vertically upward on the upper end surface on the left side in FIG. Further, the slide bracket 21 has a pair of holes 37A to 37D formed at four positions on both sides of the side wall 35. Pins 38 are provided in these holes 37A to 37D.
Is rotatably supported by an E-ring (not shown),
Rollers 39A to 39D are rotatably mounted on the pins 38, respectively. Here, the holes 37A, 37D located on the outermost sides on both sides in the axial direction of the slide bracket 21 are the holes 37 adjacent to the inner side thereof.
It is formed at a position slightly lower than B and 37C so that only the rollers 39A and 39D are in contact with the base plate 11 and can rotate.

The slide holder 23 is provided in a U-shape having an open upper portion, and pins 41 are projected from the slide holder 23 at predetermined intervals in the axial direction. Holes 4 into which the columns 30 are inserted are provided at both ends of the slide holder 23.
2, 42 are bored, and between these holes 42, 42,
A plurality of screw holes 43 are provided. In addition, the pin 4
A coil spring 44 is arranged around the axis 1. The upper ends of these coil springs 44 pass through the punched-out portion 33 of the slide bracket 21 and come into contact with the inner surface of the upper end of the rail 14, and the coil springs 44 urge the components below the slide holder 23 downward. It will be.

The slide member 25 includes first to third
Are formed by three members of the slide member forming bodies 25A, 25B and 25C. Each slide member forming body 25A,
Holes 45 respectively corresponding to the plurality of screw holes 43 formed in the slide holder 23 are formed on the slide holders 23B and 25C, and these holes are aligned horizontally so as to be fixed to the slide holder 23. Has become. In addition, the slide member forming bodies 25A and 25C located on both sides are provided with a shape in which the lower surface side is notched inwardly and provided with the inclined surface 47, and at the axial outer side position with respect to each inclined surface 47. A hole 48 through which the pillar 30 is inserted is formed. Here, the column 30, the rollers 39B, 39
The conversion mechanism for converting the moving direction of the slide bracket 21 into the vertical direction is configured by C and the inclined surface 47.

The paper pressing member 26 is fixed to the lower surface of the slide member 25. The paper pressing member 26 is used for restricting the paper inserted through the lower surface of the paper pressing member 26 from moving in the plane direction at the time of cutting. Each of the slide member forming bodies 2
Holes 50 are formed corresponding to the holes 45 formed in each of 5A to 25C, and the paper pressing member 26 is integrated with the slide holder 23 and the slide member 25 by bolts 51 inserted through these holes 50 from below. It can be changed. The paper holding member 26 is provided with a groove 26A extending over the entire length thereof, and the groove 26A enables easy positioning at the time of bolt fastening when assembling the slide member forming bodies 25A, 25B, 25C. Has become.

The side surface of the slider 15 has a slightly concave shape, and a blade holder 55 is mounted in this concave area. As shown in FIG. 3, the blade holder 55 includes a case 61 for rotatably storing a circular blade 60,
A support member 62 to which the case 61 is attached, a holder guide 63 provided in a shape capable of receiving the support member 62 and attached to the concave side surface of the slider 15, and an outer surface of the holder guide 63 are sequentially provided. It is provided with a side plate 64 and a cover 65 to be mounted.

The case 61 has a two-part structure including a substantially rectangular case main body 61A and a cap piece 61B fitted into the case main body 61A. This case 61 is a state in which the blade 60 is stored,
The blade 60 is provided in a size that partially protrudes from the lower end of the case 61. The case body 61A and the cap piece 61B are provided with holes 67 and 68 whose axes are aligned with the rotation center hole 60A of the blade 60, respectively.
A shaft 70 as a rotation support shaft is inserted through the holes 7 and 68 at the same position as the hole 69 provided in the support member 62, whereby the blade 60 is rotatably supported in the case 61. Is done.

A pin 72 protrudes from the upper portion of the case body 61A at a position facing the support member 62. The pin 72 is provided so as to be inserted into a hole 73 formed on the upper part of the support member 62, and
1 can be positioned when mounted.
The case body 61A and the cap piece 61B are prevented from being displaced by the concave portions 74 formed on the left and right sides of the case body 61A and the convex portions 75 of the cap pieces 61B provided at corresponding positions. The fitting of the case body 61A and the cap piece 61B is performed by fitting several undercut portions (not shown) provided around them and small projections.

The support member 62 has a rectangular block shape as a whole, and a concave portion 77 is formed at the upper center thereof. A projection 78 projects upward from the bottom surface of the recess 77, and a lower portion of a coil spring 80 as an urging means is mounted so as to surround the projection 78. The shaft 70 inserted into the support member 62 is provided in a shape having a linear portion 70B along the tangential direction in the head portion 70A, and a head receiving groove (not shown) corresponding to the shape of the head portion 70A. Is provided on the supporting member 62, whereby the shaft 70 is non-rotatably supported in the supporting member 62.

The holder guide 63 is provided as a whole with a pair of right and left support portions 82 and a horizontal beam portion 83 connecting the upper portions of the support portions 82 in a gate shape. Is configured as an accommodation space. A connection shaft 84 protrudes from an upper portion of each support portion 82, and a hole 85 is formed in a lower portion of the support portion 82. The axes of the connection shaft 84 and the hole 85 match the holes and the screw holes (not shown) provided on the side surface of the slider 15. In addition, the horizontal beam 83
A protrusion 86 is provided on the lower surface of the support member 62 so as to be coaxial with the protrusion 78 of the support member 62. The protrusion 86 is mounted so that the upper side of the coil spring 80 surrounds the periphery of the protrusion 86. 80 is prevented from falling off. Further, concave portions (not shown) corresponding to the ridge portions 62A provided at both ends of the support member 62 are formed on the rear side of the support portion 82 in FIG.
2 is configured to be allowed to move only in the vertical direction.

The side plate 64 mounted so as to sandwich the upper and lower sides of the holder guide 63 comprises a side wall portion 88, and an upper wall portion 89 and a lower wall portion 90 extending from both upper and lower ends of the side wall portion 88 in the orthogonal direction. The side wall portion 88 covers the side surface (rear surface in FIG. 3) of the holder guide 63, while the upper wall portion 89 and the lower wall portion 90 cover the upper and lower portions of the holder guide 63. At this time, the lower wall 90 is attached to the holder guide 6.
Since the lower surface of the support member 62 received in the support member 3 is supported, the support member 62 does not fall off the holder guide 63. Further, a hole 92 into which a bolt 91 is inserted is formed in the side wall portion 88. This hole 92
The axis of the holder plate 63 is aligned with a hole (not shown) formed in each column portion 82 of the holder guide 63.
4 can be fixed to the holder guide 63. A hole 93 whose axis coincides with a hole 85 formed in the column portion 82 of the holder guide 63 is located below the hole 92.
Are formed.

A cover 6 attached to the outside of the side plate 64.
5 has a front wall portion 94 and cover side walls 95 extending from both left and right ends of the front wall portion 94, and is provided in the same appearance as the side plate 64. The holder guide 63 and the side wall 6 are provided on the front wall 94 of the cover 65.
Hole 96 located coaxially with holes 85 and 93 formed in FIG.
Are provided, and bolts 97 inserted into the holes 96 are provided.
Can be passed through the holes 93 and 85 and fastened to the screw holes on the slider 15 side.

Next, the assembling procedure and operation of the paper cutter will be described.

When the rail 14 is set on the base plate 11, the support 30 is inserted from the upper surface of the base plate 11 and the support 30 is erected. Slide member forming bodies 25A to 25C
The paper holding member 26 and the paper holding member 26 are integrated by bolts 51, respectively, and are accommodated from the lower open side of the slide bracket 21. And the slide bracket 21
The rollers 39B to 39D supported by the shaft are supported by pins 38 so as to be held below the inclined surface 47 provided on the lower surface side of the slide member forming bodies 25A and 25C, and the pins 38 are dropped by an E-ring or the like. Fix to impossible. On the other hand, the roller 39A is pivotally supported by the pin 38 at a position below the lever 34 of the slide bracket 21 to prevent the same from falling off as described above.

On both sides in the axial direction of the structure assembled in this way, holes 42 and 48 are present on the coaxial line extending in the vertical direction, and the columns 3 are inserted into these holes 42 and 48.
Insert 0 and cover the rail 14 from above. At this time, the slider 15 and the blade holder 55 are set on the rail 14 in advance. Then, when housing both ends of the rail 14 in the axial direction in the rail support bodies 12 and 13, the lever 34 of the slide bracket 21 penetrates through the slit hole 12A (see FIG. 1) provided in the upper surface portion of the rail support body 12. The cap 99 is attached to the upper end of the lever 34 protruding from the slit hole 12A. After this,
The rails 14 can be fixed by screwing the bolts 29 onto the upper ends of the columns 30.

The assembly of the blade holder 55 can be performed in the following manner. That is, the hole 69 of the support member 62
The shaft 70 is previously inserted into the coil spring 8 so as to surround the projection 78 provided on the upper portion of the support member 62.
The support member 62 is accommodated in the holder guide 63 in this state. And the holder guide 63
The side plate 64 is fixed to the side surface of the bolt with a bolt 91. In this state, the support member 62 is supported so as to be finely movable only in the vertical direction.

On the other hand, the blade 60 is housed in the case body 61A, and the cap piece 61B is fitted into the case body 61A to complete the unit as a single body. The completed case 61 with the blade 60 housed therein is the case body 6
By inserting the 1A pin 72 into the hole 73 of the support member 62, the pin 72 can be connected and supported by the support member 62. At this time, the shaft 70 inserted into the hole 69 of the support member 62 reaches the position of the hole 68 of the cap piece 61B through the hole 67 of the case body 61A and the rotation center hole 60A of the blade 60. . The shaft 70 is connected to the head 7
While the linear portion 70B is formed at 0A, the corresponding shape is formed on the support member 62 side, so that the shaft 70 is supported in a fixed state without rotating, and only the blade 60 can rotate. Becomes

With the case 61 thus mounted, the connecting shaft 84 of the holder guide 63 is inserted into the hole on the slider side. The cover 65 is fixed to the outer surface of the side plate 64 in advance with a double-sided tape or the like. Therefore, by screwing the bolt 97 from the outside of the cover 65, the blade holder 55 can be fixed to the slider 15 side, as shown in FIG. Assembly is completed in a state where it can be done.

The paper cutter 10 is always maintained in a state where the lower surface of the paper pressing member 26 is pressed against the upper surface of the base plate 11. Therefore, when cutting the paper, a finger is put on the cap 99 attached to the upper end of the lever 34 to move the lever 34 to the axially outer side of the rail 14.
Since the lever 34 is fixed to the slide bracket 21, the slide bracket 21 is fixed to the rail 14
It moves relative to the outside in the axial direction. During this movement, the roller 39 supported by the slide bracket 21
Since A and 39D roll in contact with the upper surface of the base plate 11, they are smoothly performed.

When the slide bracket 21 moves in the axial direction, the rollers 39B and 39C supported by the slide bracket 21 also move at the same time. At this time, the rollers 39B, 39
C is present at a position in contact with the inclined surface 47 formed on the lower surface side of each of the slide member forming bodies 25A and 25C, and the entire slide member 25 is prevented from moving in the axial direction by the column 30. Since there is a roller 39B,
The movement of 39C causes the slide member 25 to rise in the horizontal height position by the inclined surface 47, which in turn allows the lower surface of the paper pressing member 26 to be separated from the upper surface of the base plate 11 and allows the paper to be inserted therethrough. A gap will be formed.

In this state, when the paper is inserted through the gap, the paper is set at a predetermined cutting position, and then the lever is returned to the original position, the coil disposed between the slide holder 23 and the rail 14 is moved. The paper pressing member 26 is lowered by the urging force of the spring 44, and applies a pressing force to the paper to regulate the movement of the paper in the surface direction. Thereafter, the paper can be cut straight by moving the slider 15 on the rail.

When the cutting ability of the blade 60 in the blade holder 55 is reduced due to repeated continuous cutting of paper, only the case 61 is removed from the support member 62 after the blade holder 55 is removed from the slider 15. The blade can be replaced by attaching a new case 61 thereto.

According to the above configuration, the paper holding member 26
A pair of inclined surfaces 47 is provided on the slide member 25 that supports the rollers, rollers 39B and 39C that contact the lower surface side of the inclined surfaces 47 are provided, and the slide member 25 is configured to be immovable in the axial direction by the column 30. Therefore, the direction in which the paper pressing member 26 moves up and down with respect to the upper surface of the base plate 11 becomes the vertical direction with respect to the base plate 11, and no force is applied in the plane direction to the upper surface of the paper set for cutting. Never give. Therefore, it is possible to prevent the paper from shifting in the horizontal direction when the paper is pressed by the paper pressing member 26, and it is possible to neatly align the edges of the cut paper. Moreover, since the groove 26A is formed on the lower surface side of the paper pressing member 26, mutual positioning of the paper pressing member 26 and the slide member 25 can be easily performed.

Further, since the cutting blade 60 is of a cartridge type which can be exchanged while being housed in the case 61, it can be attached and detached without directly touching the blade 60. Therefore, there is no need to attach and detach the blade 60 at all, and the effect of injuries when replacing the blade 60 can be avoided as much as possible. Moreover, since the case 61 has a two-part structure of the case body 61A and the cap piece 61B, and the case 61 can be assembled by fitting the case body 61A and the cap piece 61B to each other, the case 61 can be separated. The blade 60 which is easy and is dangerous
And the case 61, which is a non-dangerous material, can be sorted and waste can be treated. Further, by inserting the blade 60 partially projecting from the case 61 into a solid such as styrofoam, safety can be ensured, so that the case 61 can be put into a distribution process in a predetermined package.

Further, the blade 60 has a center axis 60 for rotation.
Since A matches the axial shape of the shaft 70, the blade 60
Can be mounted on the shaft 70 irrespective of the angular position in the circumferential direction, and the safety at the time of mounting can be improved by facilitating the mounting work.

Further, since the case 61 is constructed by fitting with the support member 62, the case 61 can be attached and detached very easily, and the case 61
Since it can be fixed firmly between 2 and the slider 15,
It can be expected that cutting accuracy in the linear direction can be ensured with high accuracy. In addition, since the support member 62 is constantly urged downward by the coil spring 80 as the urging means, the urging force acts stably to press the blade 60 downward, thereby reducing the cutting failure. The possibility of occurrence is also eliminated.

The conversion mechanism may be modified in various ways as long as the paper pressing member 26 can be moved up and down without moving in the horizontal direction.

The number of coil springs 44 mounted on the slide holder 23 can be reduced or increased as appropriate within a range in which the components below the slide holder 23 can be pressed equally downward.

Further, the slide member 25 has a divided structure of three slide member forming bodies 25A to 25C.
These can be configured as an integral type, or the slide member forming body 25B located at the center can be omitted. In short, the design of the slide member 25 can be changed according to the maximum size of the paper to be cut.

The coil spring 80 as the urging means interposed between the upper end of the support member 62 and the holder guide 63 may be replaced with, for example, a leaf spring having an arcuate appearance. Can be.

Further, the case body 6 constituting the case 61
The fitting structure between 1A and the cap piece 61B is also the case body 6
Other fitting or connecting structures other than those described above can be employed as long as the 1A and the cap piece 61B can be engaged and disengaged.

The case 61 in which the blade 60 is housed is sufficient if it can be attached to and detached from the slider 15.
2. The holder guide 63 and the like are not always required unless the appearance and the like are considered. In this case, a structure in which the case 61 can be directly fixed to the slider 15 may be adopted.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view showing the entire configuration of a paper cutter.

FIG. 2 is an exploded perspective view of FIG.

FIG. 3 is an exploded perspective view of the blade holder.

[Explanation of symbols]

 10 Paper Cutter 11 Base Plate 14 Rail 15 Slider 21 Slide Bracket 25 Slide Member as Shaft Member 26 Paper Pressing Member 30 Posts Constituting Conversion Mechanism 39A Roller 39B Rollers Constituting Conversion Mechanism 39C Rollers Constituting Conversion Mechanism 47 Conversion Mechanism Inclined surface

Claims (3)

[Claims] 1. A paper that can cut a paper inserted between a paper pressing member arranged on the lower surface side of the rail and the base plate by moving a slider along the rail on the base plate. In the cutter, a slide bracket that is movable in the axial direction relative to the rail is provided in the rail, and a shaft member to which the paper pressing member is fixed is attached to the slide bracket through a predetermined conversion mechanism. An elevating mechanism for a paper pressing member, wherein the shaft member is provided so as to be able to ascend and descend in a substantially vertical direction by axial movement of the slide bracket. 2. The conversion mechanism includes a column that restricts axial movement of the shaft member, a roller that is supported by the slide bracket and that is arranged to embrace the shaft member,
2. The elevating mechanism for the paper pressing member according to claim 1, wherein the elevating mechanism is provided on the lower surface side of the shaft member and is formed by an inclined surface formed so that the peripheral surface of the roller can abut. 3. The paper holding member lifting and lowering mechanism according to claim 1, wherein said slide bracket further comprises a roller which comes into contact with said base plate and rolls on said base plate.