JP2000296495A - Tool post structure of sheet material cutting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a tool post structure of sheet material capable of easy removal of only a cassette type tool support structure from a sliding member slidably mounted on a frame to easily interchange with a new tool support structure or a tool support structure having a cutting edge suitable for a sheet to be cut. SOLUTION: This tool post structure is provided with a frame 1 comprising a constant section in an axial direction, a tool post fitted to the frame 1 and capable of reciprocating thereon, and a wire type driving means for reciprocation of the tool post along the frame 1, and the tool post is composed of a sliding member 13 fitted to the frame 1 and connected to the wire type driving means, a wire driving means 6 mounted on the sliding member 13, and a cassette type tool support structure 20 capable of being removably mounted on the sliding member 13 and being secured by a securing means.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tool post structure for a sheet cutting apparatus which is connected to an endless wire looped between a driving pulley and a driven pulley, and reciprocates by moving the endless wire. More specifically, a slide slidably attached to the frame when the blade for cutting the sheet attached to the tool post is damaged or when the blade is replaced according to the type of the sheet to be cut. The present invention relates to a tool post structure for a sheet material in which only a cassette type tool support can be easily removed from a moving member and replaced with a new tool support or a tool support having a blade suitable for a sheet to be cut.

[0002]

2. Description of the Related Art Conventionally, in a large plotter or a printer apparatus of A3 size or more or more than 1 m, especially a full-color printer which has recently become popular, a recording paper wound in a roll is drawn out and drawn and printed in a set range. A required part is cut using a cutting device. Although there are various types of such paper cutting devices, recently, in order to overcome the drawbacks of the rotary type cutting device that is expensive in manufacturing and relatively noisy, one of the cutting devices for band-like sheet materials such as paper is used. First, a cutting device using a combination of a rotating blade that moves while rotating and a long fixed blade has come to be used.

A mechanism for moving the tool rest of this type of cutting apparatus will be described with reference to FIG. 7. The tool rest 100 moves along a guide 113 formed on a frame while rotating the rotary cutter 1.
02 and the fixed blade 104 cooperate to cut the sheet.
Is mounted.

The moving mechanism comprises a driving pulley 111, a driven pulley 112, an endless wire 110 wound between these pulleys 111 and 112, a motor (not shown) for rotating the driving pulley 111, and the like. The endless wire 110 moves due to the rotation of the tool, and the tool rest 100 moves along the guide 113 formed on the frame in a form pulled by the endless wire 110.
The sheet material conveyed in the direction perpendicular to the paper is cut in cooperation with the rotary blade 102 and the fixed blade 104.

[0005]

By the way, in the case of a sheet material cutting apparatus having a large cut width such as a cut width exceeding 20 cm or exceeding 1 m, the receipt is light, convenient to carry and relatively easy to handle. Unlike the cutter for the tool, the tool post as described above uses the guide 113 to guide the tool post.
Because the blade cannot be easily removed from the printer, if the blade is damaged for any reason, it is not possible to easily replace only the blade, requiring repairs by a specialized contractor. There is a problem that the machine equipped with the cutter stops for a long time. Also, when cutting sheets of different thicknesses, the sharpness can be sharpened by using blades that are suitable for thicker and thinner sheets, but the above device can easily replace blades. Work efficiency is not good.

In view of the above situation, the present inventor has constructed a tool rest mounted on a frame by a sliding member and a blade support which can be mounted on the sliding member, and among these, the tool supporting the blade is provided. The present invention provides a tool rest structure of a sheet material cutting apparatus in which only the support is made into a cassette, and the cassette type tool support is removed and replaced with a new tool support as necessary, and the blade can be easily replaced. The purpose is to solve the problem.

According to the present invention, there is provided a sliding member capable of reciprocating on a frame having a constant cross section along an axial direction, and a connecting portion of an endless wire for reciprocating a tool post is attached to the sliding member. To this sliding member, a cassette type blade support having a blade for cutting the sheet material is attached, and if the blade is damaged or becomes dull, remove only the blade support from the sliding member. By exchanging with a spare blade support, anyone can easily replace the blade at any time. Furthermore, the sliding member to which the blade support is attached is made of a thermosetting or thermoplastic resin molded product having good slidability, so that the sliding member has a low sliding resistance and a smooth movement of the tool rest. can do.

[0008]

The technical solution adopted by the present invention is to provide a frame having a constant cross section in the axial direction, a tool rest fitted to the frame and capable of reciprocating on the frame, and a tool rest. And a wire drive means for reciprocating the tool post along the frame, wherein the tool rest is fitted to the frame, and a sliding member connected to the wire drive means; It is composed of a mounted wire driving means, and a cassette type blade support detachably attached to the sliding member and which can be fixed by a fixing means, wherein the cassette type blade support is
A first rotary blade rotatably provided about an axis substantially perpendicular to a moving direction of the sliding member, and a first rotary blade disposed between a back surface of the first rotary blade and a guide surface formed on the frame; and The back surface of the first rotary blade is in contact with the frame, and rotates with the movement of the sliding member.
A roller capable of rotating a rotary blade, attached to a portion of the blade support that protrudes to one side from the frame side surface, abuts the first rotary blade, and rotates about an axis parallel to the first rotary blade. A second rotary blade capable of being disposed coaxially with the second rotary blade and in contact with the side surface of the frame;
A blade for a sheet material cutting device, comprising: an elastic body such as an O-ring or a rubber roller for applying a rotational force to the rotary blade; and a spring for pressing the first rotary blade toward the second rotary blade. A frame having a fixed cross section in the axial direction, a tool rest fitted to the frame and capable of reciprocating on the frame, and a wire type driving means for reciprocating the tool rest along the frame. Wherein the tool rest is fitted on a frame and is connected to a wire type driving means, a sliding member, a wire driving means attached to the sliding member, and detachably attached to the sliding member. And a cassette-type blade support that can be fixed by fixing means. The cassette-type blade support is provided rotatably about an axis substantially perpendicular to the moving direction of the sliding member. A sliding member disposed between the first rotary blade and the guide surface formed on the frame and the back surface of the first rotary blade, and abutting on the back surface of the first rotary blade and the frame; A roller that rotates with the movement of the first rotating blade, and a roller that can rotate the first rotating blade by this rotation, and is attached to a portion of the blade support that protrudes from the frame side surface to one side, and the first rotating blade A blade support structure for a sheet material cutting device, comprising: a fixed blade that comes into contact with the spring; and a spring that presses the first rotary blade toward the fixed blade. A tool post structure for a sheet material cutting device, characterized by using a good thermosetting or thermoplastic resin molded product, wherein the sliding member has a sliding direction formed on the sliding member. And a long hole formed at right angles to the A tool rest structure for sheet material cutting device and the knot of endless wires, characterized in that it comprises a for the movably arranged wire type driving means in the hole.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of a sheet material cutting apparatus according to a first embodiment of the present invention, in which a tool post is disassembled, FIG. 2 is a perspective view of a sliding member constituting the tool post, and FIG. Plan view of the sliding member, AA sectional view in the figure, BB
FIG. 4 is an exploded perspective view of the cassette type blade support, FIG. 5 is a plan view of the blade support, and FIG.
FIG. 6 is a plan view showing a state where the sliding member and the blade support are assembled, and FIG. 6 is a sectional view taken along line DD in FIG. In addition,
In the following embodiment, as an example of a sheet material cutting mechanism,
Japanese Patent Application Laid-Open No. Hei 8-57797 (US Pat. No. 5,503,053) proposed by the present applicant is employed.

In FIG. 1, reference numeral 1 denotes a frame 1. The frame 1 has a uniform cross section over the entire length as shown in FIG. 1, and the frame 1 has ribs 1a and 1b serving as guides as shown in FIG. , 1c. A driving pulley 3 having a driving side engaging gear 2 coaxially at one end of the frame 1 and a driven pulley 5 having a driven side engaging gear 4 coaxially at the other end are rotatably supported. An endless wire 6 is looped between the driving pulley 3 and the driven pulley 5. A motor 8 is connected to the drive pulley 3 via a gear 7. The driven pulley 5 is connected to the frame 1
Is configured to be able to slide a predetermined distance in the axial direction of
1 is normally urged to the left in FIG. 1 by the urging force of the tension spring 9 to apply tension to the endless wire 6. Sensors 11, which detect that the tool rest 10 has moved, are provided at both ends of the frame 1,
12 are attached, and these sensors 11, 1
The motor 8 is controlled by a signal from the control unit 2.

A sliding member 13 constituting a tool rest is slidably fitted to the ribs 1a and 1c of the frame 1 in the axial direction of the frame. The sliding member 13 has a high sliding property in which the sliding property is enhanced by, for example, a carbonaceous resin or a polyacetal resin (thermoplastic resin) containing silicon oil or the like in order to improve the sliding property with the frame 1. It is made of a material such as a phenol resin (thermosetting resin). Also,
The sliding member 13 is formed on the frame 1 so as to be fitted from the right end of the frame 1 shown in FIG.
Grooves 13a and 13b (see FIG. 2) corresponding to a and 1c are formed.

As shown in FIGS. 1 to 3, the sliding member 13 has an elongated hole 14 formed in a direction perpendicular to the moving direction.
A slide piece 15 that holds a connection portion of the endless wire 6 is movably mounted in the elongated hole 14.
The length of the wire 6 can be easily changed at the knot. The sliding member 13 has a through hole 16 for passing a roller held by a cassette type blade support 20 to be described later, and a storage hole 17 for storing a shaft of the first rotary blade. The member 13 has screw holes 18 and 19 for fixing a blade support described later. Since the sliding member 13 is connected to the endless wire 6, when the motor 8 is driven, the driving pulley 3 rotates, and the endless wire 6 wrapped around the driven pulley 5 moves to move on the frame 1. It can slide back and forth.

A cassette type blade support 20 is detachably attached to the sliding member 13. 4 and 5, the slide piece 1 is attached to the cassette type blade support 20.
5 is formed, and bearings 26, 2 holding a first rotary blade 22 and a second rotary blade 23 are formed.
7 are formed. Further, the cassette type blade support 20
Is formed with a roller holding unit 28 that holds a roller 25 for rotating the first rotary blade 22.

The blade support 20 supports the shaft of the first rotary blade 22, and the back surface of the first rotary blade 22 and the frame 1
The roller 25 is in contact with the upper surface of the guide 1b formed on the side (see FIG. 1). The roller 25 is a blade support 2
The blade 25 is held by the blade support 20 so as not to fall off from zero. In this example, the shaft of the roller 25 is held by the blade support 20 as shown in the sectional view of FIG. . The roller 25 is a first roller as shown in the plan view of FIG.
The first rotary blade 22 is disposed slightly offset rightward from the center of the rotary blade 22, and the first rotary blade 22 is inclined forward in the traveling direction (leftward in the drawing) by the action of the roller 25, and One point 30
It comes in contact with. The roller 25 is disposed in the hole 28 formed in the blade support 20 and the hole 16 formed in the sliding member 13, and the urging force of a spring (plate spring) 31 disposed on the first rotary blade 22. Thereby, the back surface of the first rotary blade 22, the roller 25, and the upper surface of the guide 1b come into contact with each other. The rotary blade 22 and the roller 2
The state of assembling with No. 5 is the same as that described in Japanese Patent Application Laid-Open No. 9-193083 filed and published by the present applicant, and is described in detail in the publication.

A second rotary blade 23 is provided on the blade support 20 at a position protruding from the side surface of the frame 1. Around the shaft 23 a of the second rotary blade 23, a second rotary blade 23 is provided on the side surface of the frame 1. An elastic body such as an O-ring 24 to be pressed is provided. The O-ring 24 pressed against the side surface of the frame 1 can use an elastic member having the same function, or a roller made of resin or the like, and the diameter of the roller is smaller than that of the second rotary blade. It is also possible to set a large value. The first rotary blade 22 and the second rotary blade 23 are arranged so as to slightly overlap each other as shown in FIG. 5, and the contact point 3 between the first rotary blade 22 and the second rotary blade 23
The sheet can be cut at the zero portion. When the tool rest 10 moves, the second rotary blade 23 moves the O-ring 24
Is pressed against the side surface of the frame 1 so that a rotational force is applied. In FIG. 4, 23A is a cover of the second rotary blade 23, 32 is a cover of the blade support, and 33 is a screw insertion hole.

The sliding member 13 configured as described above is
As shown in FIG. 1, a slide piece 15 that is slidably fitted to the frame 1 and that holds a connection portion of the endless wire 6 is attached to the long hole 14 of the slide member 13. As shown in FIG. 1, the cassette-type blade support 20 having the above-described structure is provided on the sliding member 13 with screws 34 and 35.
Fixed by The cassette type blade support 20 can be easily removed from the sliding member 13 by removing the screws 34 and 35.

Here, the state in which the sliding member 13 and the blade support 20 are assembled will be described in more detail with reference to FIG. 6. The sliding member 13 is shown in a sectional view taken along line DD in FIG. Are fitted to the ribs 1a and 1b of the frame 1. The blade support 20 is detachably attached to the sliding member 13 by screws 34. Further, a slide piece 15 of the endless wire 6 is attached to the slide member 13. The roller 25 held by the blade support 20 is disposed between the back surface of the first rotary blade 22 and the upper surface of the guide 1b formed on the frame 1 and is urged by a spring 31. The two-rotation blade 23 is also pressed against each other by the biasing force of the spring 31. An O-ring 24 provided integrally with the shaft 23 a of the second rotary blade 23 is in contact with the side surface of the frame 1. As shown in the plan view of FIG. 6, the rotation center of the roller 25 is slightly shifted rightward from the axis of the first rotary blade 22. The two-turn blade 23 is in contact at one point 30 in the plan view.

The operation of the tool rest of the sheet material cutting apparatus according to the first embodiment will be described. In FIG. 1, a tool post 1
Consider a case where 0 moves along the frame 1 to the left in FIG. While the motor 8 is being driven, the drive pulley 3 is rotating, and the endless wire 6 is also moving. Then, along with this, the sliding member 13 also moves to the left on the frame 1 along with the endless wire 6 via the slide piece 15 holding the knot of the endless wire 6. By this movement, the cassette-type blade support 20 fixed to the sliding member 13 also moves, and the roller 25 disposed between the first rotary blade 22 and the guide 1b rotates,
The rotation of the roller 25 causes the first rotary blade 22 to rotate. Further, the second rotary blade 23 also rotates because the O-ring 24 is in contact with the side surface of the frame 1. Due to the rotation of the two rotary blades 22 and 23, the sheet material is brought into contact with the contact points 3
It is cut at 0. At this time, the first rotary blade 22 is
The blades are tilted forward by the action of
At 0, the sheet comes into contact, and the sharpness of the sheet is improved. The operating states of the rotary blade 22 and the roller 25 are described in detail in the above-mentioned Japanese Patent Application Laid-Open No. 9-193083.

When the sliding member 13 moves to the left end in FIG. 1, the slide piece 15 is locked by the driven locking gear 4 of the driven pulley 5, and is slid by the rotating driven locking gear 4. The long hole 1 formed in the sliding member 13 by the piece 15
4 starts moving from one end to the other end, and when the slide piece 15 moves to the other end in the elongated hole, the lock between the slide piece 15 and the driven side locking gear 4 is released. ,
The tool rest 10 starts moving in the reverse direction. Also, when it comes to the drive pulley 3 side, the movement direction of the tool rest 10 is reversed by the same action. During this time, the sensor 11 detects that the tool rest 10 is at the optimum standby position, and stops driving the motor 8. Thereafter, when a sheet material cutting command is output again, the motor 8 starts driving, the tool post 10 executes sheet cutting, and when the movement end point on the other end side of the frame 1 is reached, the driving side engaging gear 2 causes Then, the connecting point between the sliding member 13 and the slide piece 15 is changed, the moving direction of the tool rest 10 is reversed, and the tool rest 10 returns to the standby position.

In the tool rest 10, for example, when the first rotary blade 22 or the second rotary blade 23 is damaged or becomes dull, the screws 34, 3
By simply removing the cassette blade support 20 from the sliding member 13 and replacing it with a spare blade support 20, anyone can easily exchange a new blade at any time and always ensure sharp sharpness. . In addition, the rotary blades 22, 2
Safe and easy new tool post without touching 3
It is easy to handle because it can be replaced.

Next, a second embodiment of the present invention will be described. The sheet cutting mechanism according to the first embodiment comprises a first rotary blade 22 and a second rotary blade 23. A short cutting blade is used instead of the second rotating blade 23 in the embodiment, and a sheet cutting mechanism for cutting a sheet material by cooperation of the first rotating blade and the short fixed blade is employed.
The sheet cutting mechanism according to the second embodiment is disclosed in
Since the one described in FIG. 7 in JP 193083 is used as it is, a detailed description of those components is omitted.

While the embodiments have been described above, the present invention can be embodied in various other forms without departing from the spirit and main characteristics thereof. Therefore, the above-described embodiments are merely examples, and should not be construed as limiting. Further, all modifications and changes belonging to the equivalent scope of the claims are within the scope of the present invention.

[0023]

As described above in detail, in the tool rest of the sheet material cutting apparatus according to the present invention, the tool support can be easily removed from the sliding member, so that the tool support is damaged or becomes unsharp. The blades can be easily replaced, and a sharp sheet material cutting device can be constituted at any time. In addition, since the blade can be replaced very safely and easily, the finger or the like is not hurt at the time of replacement. Further, since a thermosetting or thermoplastic resin molded product having good slidability is used for the sliding member to which the blade support is attached, the sliding resistance is small and the tool rest moves smoothly. Excellent effects such as easy replacement of the blade in accordance with the material of the sheet to be cut can be achieved.

[Brief description of the drawings]

FIG. 1 is a perspective view of a sheet material cutting device according to a first embodiment of the present invention.

FIG. 2 is a perspective view of a sliding member constituting the tool rest.

FIG. 3 is a plan view of a sliding member, and is a cross-sectional view taken along line AA and BB in FIG.

FIG. 4 is an exploded perspective view of the cassette type blade support.

FIG. 5 is a plan view of the blade support and a cross-sectional view taken along the line CC in FIG.

FIG. 6 is a plan view showing a state where the sliding member and the blade support are assembled, and a sectional view taken along the line DD in FIG.

FIG. 7 is a configuration diagram of a conventional sheet material cutting apparatus.

[Explanation of symbols]

 Reference Signs List 1 frame 1a, 1b, 1c rib (guide) 2 drive side locking gear 3 drive pulley 4 driven side locking gear 5 driven pulley 6 endless wire 7 gear 8 motor 9 tension spring 10 tool post 11, 12 sensor 13 sliding member Reference Signs List 14 long hole 15 slide piece 16 through hole 17 storage hole 18, 19 screw hole 20 cassette type blade support 21 long hole 22 first rotary blade 23 second rotary blade 24 O-ring (elastic body) 25 rollers 26, 27 bearing 28 Roller holder 30 Contact point 31 Leaf spring (spring) 34, 35 Screw

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[Procedure amendment]

[Submission date] April 19, 1999 (1999.4.1
9)

[Procedure amendment 1]

[Document name to be amended] Drawing

[Correction target item name] All figures

[Correction method] Change

[Correction contents]

FIG.

FIG. 2

FIG. 7

FIG. 3

FIG. 4

FIG. 5

FIG. 6 ────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] September 9, 1999 (1999.9.9)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claims

[Correction method] Change

[Correction contents]

[Claims]

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0008

[Correction method] Change

[Correction contents]

[0008]

The technical solution adopted by the present invention is to provide a frame having a constant cross section in the axial direction, a tool rest fitted to the frame and capable of reciprocating on the frame, and a tool rest. And a wire drive means for reciprocating the tool post along the frame, wherein the tool rest is fitted to the frame, and a sliding member connected to the wire drive means; It is composed of a mounted wire driving means, and a cassette type blade support detachably attached to the sliding member and which can be fixed by a fixing means, wherein the cassette type blade support is
A first rotary blade rotatably provided about an axis substantially perpendicular to a moving direction of the sliding member, and a first rotary blade disposed between a back surface of the first rotary blade and a guide surface formed on the frame; and The back surface of the first rotary blade is in contact with the frame, and rotates with the movement of the sliding member.
A roller capable of rotating a rotary blade, attached to a portion of the blade support that protrudes to one side from the frame side surface, abuts the first rotary blade, and rotates about an axis parallel to the first rotary blade. A second rotary blade capable of being disposed coaxially with the second rotary blade and in contact with the side surface of the frame;
A blade for a sheet material cutting device, comprising: an elastic body such as an O-ring or a rubber roller for applying a rotational force to the rotary blade; and a spring for pressing the first rotary blade toward the second rotary blade. A frame having a fixed cross section in the axial direction, a tool rest fitted to the frame and capable of reciprocating on the frame, and a wire type driving means for reciprocating the tool rest along the frame. Wherein the tool rest is fitted on a frame and is connected to a wire type driving means, a sliding member, a wire driving means attached to the sliding member, and detachably attached to the sliding member. And a cassette-type blade support that can be fixed by fixing means. The cassette-type blade support is provided rotatably about an axis substantially perpendicular to the moving direction of the sliding member. A sliding member disposed between the first rotary blade and the guide surface formed on the frame and the back surface of the first rotary blade, and abutting on the back surface of the first rotary blade and the frame; A roller that rotates with the movement of the first rotating blade, and a roller that can rotate the first rotating blade by this rotation, and is attached to a portion of the blade support that protrudes from the frame side surface to one side, and the first rotating blade A blade support structure for a sheet material cutting device, comprising: a fixed blade that comes into contact with the spring; and a spring that presses the first rotary blade toward the fixed blade. A tool post structure for a sheet material cutting device, characterized by using a good thermosetting or thermoplastic resin molded product, wherein the sliding member has a sliding direction formed on the sliding member. And a long hole formed at right angles to the A knot of an endless wire of a wire type driving means movably provided in the hole, and a tool post structure for a sheet material cutting device, comprising: a frame having a constant cross section in the axial direction; A tool rest fitted to the frame and capable of reciprocating on the frame, and a wire type driving means for reciprocating the tool rest along the frame, the tool rest being fitted to the frame, And a sliding member connected to the wire-type driving means, a wire driving means attached to the sliding member, and detachably attached to the sliding member,
A cassette-type blade support that can be fixed by fixing means, wherein the cassette-type blade support integrally has a blade object for cutting a sheet material, and is replaced by replacing the cassette-type blade support. A blade rest structure of a sheet material cutting device characterized in that a blade can be easily replaced, and the cassette type blade support is configured to be detachable from the blade rest without touching a rotary blade. This is a tool rest structure.

Claims (4)

[Claims] 1. A frame having a constant cross section in the axial direction, a tool rest fitted to the frame and capable of reciprocating on the frame, and a wire type driving means for reciprocating the tool rest along the frame. A sliding member fitted to a frame and connected to a wire-type driving unit; a wire driving unit attached to the sliding member; and a detachably attached to the sliding member. A cassette-type blade support that can be fixed by a fixing means, wherein the cassette-type blade support is rotatably provided about an axis substantially perpendicular to the moving direction of the sliding member. A rotating blade, disposed between a back surface of the first rotating blade and a guide surface formed on the frame, and abutted on the back surface of the first rotating blade and the frame, and as the sliding member moves, A roller that can rotate the first rotary blade by this rotation, and is attached to a portion of the blade support that protrudes from the frame side surface to one side, and abuts on the first rotary blade. 1
A second rotary blade rotatable about an axis parallel to the rotary blade, an O-ring or a rubber roller disposed coaxially with the second rotary blade and in contact with the frame side surface to apply a rotational force to the second rotary blade; And a spring for pressing the first rotary blade toward the second rotary blade. 2. A frame having a constant cross section in the axial direction, a tool rest fitted to the frame and capable of reciprocating on the frame, and a wire type driving means for reciprocating the tool rest along the frame. A sliding member fitted to a frame and connected to a wire-type driving unit; a wire driving unit attached to the sliding member; and a detachably attached to the sliding member. A cassette-type blade support that can be fixed by fixing means, wherein the cassette-type blade support is rotatably provided about an axis substantially perpendicular to the moving direction of the sliding member. A rotating blade, disposed between a back surface of the first rotating blade and a guide surface formed on the frame, and abutted on the back surface of the first rotating blade and the frame, with movement of the sliding member; A roller capable of rotating the first rotary blade by this rotation, and a fixed blade attached to a portion of the blade support body protruding to one side from the side surface of the frame and abutting on the first rotary blade. And a spring that presses the first rotary blade toward the fixed blade. 3. The sheet material cutting apparatus according to claim 1, wherein the sliding member is formed of a thermosetting or thermoplastic resin molded product having good slidability. Turret structure. 4. A sliding member comprising: a long hole formed at right angles to a sliding direction formed in the sliding member; and a knot of an endless wire of a wire type driving means movably provided in the long hole. The tool post structure for a sheet material cutting device according to claim 3, further comprising: