JP2023073356A - Cutter and stopper for cutter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a stopper that can regulate movement of a movable platen in accordance with a height of a different blade die and property of a material to be cut.

SOLUTION: A cutter 100 includes a stopper 60 having a hexagonal cross section, and three opposite surfaces of 62A and 62B, 64A and 64B and 66A and 66B of which respective distance intervals L1, L2 and L3 are different from one another. A height H when the stopper 60 is placed on a blade die mount surface 40S for a backing plate 40B is adjustable in a stepwise manner in accordance with a height of a blade die 50 and a property and a type (half-cut-off object and the like) of a material to be cut P.

SELECTED DRAWING: Figure 2

COPYRIGHT: (C)2023,JPO&INPIT

Description

There is an application for exception to loss of novelty

TECHNICAL FIELD The present invention relates to a cutting machine capable of die-cutting resin sheets, films, etc., with a cutting die, and more particularly to a stopper that restricts the movement of a movable platen.

In a cutting machine that cuts materials such as films and resin sheets, a blade such as a Thomson blade is installed on a fixed platen or a movable platen that can move up and down. Then, the movable platen is moved toward the fixed platen, and the material to be cut is punched by being sandwiched between the blade and the fixed platen (see Patent Document 1, for example).

On the other hand, there is known a configuration in which a stopper is installed between the fixed platen and the movable platen to prevent the blade from approaching the fixed platen side from the cutting position during cutting (see Patent Document 2). There, prismatic stoppers are placed on both sides of the blade, and the height of the blade is set to be longer than the height of the blade according to the thickness of the material to be cut, such as a sheet material, so that the cutting edge of the blade is maintained at the cutting position. .

JP 2012-157906 A JP 2010-172971 A

Die-cutting by a cutting machine not only cuts the required portion of the material to be cut, but also half-cuts a material obtained by laminating a sealing material on a base material. In addition, a plurality of Thomson cutting dies with heights other than the standard height are prepared, and cutting dies other than the Thomson cutting dies (forged cutting dies, etc.) are sometimes used.

Therefore, it is required to provide a stopper capable of regulating the movement of the movable platen according to the height of different blades and the characteristics of the material to be cut.

The cutting machine of the present invention comprises a fixed platen, a movable platen capable of moving in the vertical direction relative to the fixed platen, and a blade mounting surface of the fixed platen or movable platen to which a blade can be attached. and a stopper for restricting the movement of the movable platen from the position toward the fixed platen. For example, a hydraulic cutting machine is applicable.

Then, the stopper of the present invention is designed so that the height from the blade-mounting surface can be adjusted stepwise in at least three steps according to the height of the blade to be attached, the characteristics of the material to be cut, or both. It is adjustable or configured to allow continuous adjustment. The "height of the cutting edge" here usually represents the height from the bottom surface of the base plate (for example, plywood) to the edge of the cutting edge. It also includes the height from the curable resin plate attached to the bottom surface of the plate.

A cutter stopper, which is one aspect of the present invention, is composed of bar-shaped members having a 2n-square cross section (where n is an integer equal to or greater than 3) with mutually different facing distances, and is a fixed plate of a cutter to which a blade can be attached. Or a stopper installed on the blade mounting surface of the movable platen to limit the movement of the movable platen from the cutting position toward the stationary platen, depending on the height of the blade to be mounted and/or the characteristics of the material to be cut. It can be installed on the blade mounting surface so that the height from the cutting surface of the blade is appropriate.

The stopper is composed of a rod-shaped member having a 2n-sided cross section (where n is an integer of 3 or more) with mutually different distances between facing faces, and has a height depending on the height of the attached blade and/or the characteristics of the material to be cut. It can be installed on the blade mounting surface so that it becomes For example, the stopper is composed of a rod-shaped member having a hexagonal cross-section and having different distances between three facing surfaces.

In another aspect of the present invention, a stopper for a cutting machine comprises first and second plate-like members that are continuously movable relative to each other along inclined surfaces facing each other, forming plane-parallel plates, A stopper that is installed on the fixed platen of a cutting machine to which a blade can be attached or on the blade mounting surface of the movable platen, restricts the movement of the movable platen from the cutting position toward the fixed platen, and is used for the attached blade. The relative positions of the first and second rod-like members can be adjusted so that the height and/or the height from the cutting surface of the cutting blade is determined according to the characteristics of the material to be cut.

For example, a first plate-like member is connected to a screw-in dial and configured to be movable relative to the second plate-like member according to an operation on the screw-in dial. Also, the first and second plate-like members may be arranged parallel to each other and provided with scales having graduations at positions facing each other on the same side surface.

According to the present invention, it is possible to provide a stopper capable of regulating the movement of the movable platen according to different blade heights, characteristics of materials to be cut, and the like.

1 is a schematic plan view showing a cutting machine according to a first embodiment; FIG. It is the figure which showed the stopper from the end surface side. FIG. 3 is a side view of the stopper viewed from the direction of arrow A in FIG. 2; It is the figure which showed the installation state of the stopper in the case of full extraction. It is the figure which showed the installation state of the stopper in the case of half cutting. It is the figure which showed the stopper of the cutting machine which is 2nd Embodiment from the side surface side.

FIG. 1 is a schematic plan view showing the cutting machine of the first embodiment.

The cutting machine 100 includes a fixed platen 10 and a movable platen 20. Here, the movable platen 20 below is vertically movable with respect to the fixed platen 10 above. Moreover, the cutting machine 100 is configured by a hydraulic cutting machine. The movable platen 20 can be reciprocated vertically by a hydraulic cylinder (not shown), and is driven by a drive control mechanism (not shown). A cutting table 30 is placed on the upper surface of the movable platen 20, and a backing plate 40B serving as a blade mounting surface is placed thereon. On the other hand, the fixed platen 10 is also provided with a backing plate 40A.

A blade 50 for punching the material P to be cut can be installed on the surface (blade mounting surface) of the backing plate 40B of the movable platen 20 . In the blade die 50, a blade having a shape that matches the die-cutting portion is embedded in the base plate material, and the height of the blade is set to a predetermined height including the cutting edge. The blade 50 is composed of, for example, a Thomson blade.

Also, the material P to be cut is placed on the surface of the blade 50 during cutting. Various materials can be applied as the material to be cut P, including synthetic resin sheets, various films such as resin films, cellophane, felt, rubber, urethane foam, plywood, and glass fiber. The size of the blade 50 is formed according to the size of the material P to be cut.

The movable platen 20 can move vertically and horizontally in parallel with respect to the fixed platen 10 . The operator fixes the blade 50 to the backing plate 40B and places the material P to be cut on the blade 50 of the movable platen 20 which is transported to a position away from the stationary platen 10 (here, on the front side of the paper surface). When the operator operates an operation panel (not shown) or the like, the movable platen 20 moves directly below the stationary platen 10 and then rises toward a predetermined cutting position.

The cutting machine 100 is here configured to cut by depressurization. The cutting machine 100 has a sensor (not shown) that measures the pressure applied to the stationary platen 10 of the movable platen 20, and terminates the upward movement of the movable platen 20 when the set pressure is reached. The cutting machine 100 is also equipped with a position sensor (not shown) for measuring the vertical position of the movable platen 20, and can perform limit release to stop the upward movement of the movable platen 20 when it reaches a predetermined position.

A pair of stoppers 60 are provided on both sides of the cutting die 50 on the backing plate 40B. Here, the stopper 60 is made of a rod-shaped member and arranged along the conveying direction (perpendicular to the paper surface) of the movable platen 20 (because the stopper 60 is rod-shaped, it is also called a stop bar).

The stopper 60 is a member that restricts the cutting edge 50 from approaching the stationary platen 10 beyond the cutting position. further rise is restricted and stops at the cutting position. As a result, in the hydraulic cutting machine 100, the movable platen 20 can be positioned at the cutting position until the predetermined pressurization time elapses. When the pressurization time elapses, the movable platen 20 descends and moves to the cutting die mounting position.

In this embodiment, when the stopper 60 is installed on the backing plate 40B, the height of the stopper 60 in the vertical direction can be changed by changing the installation surface. This will be described in detail below.

FIG. 2 is a diagram showing the stopper 60 from the end face side. FIG. 3 is a side view of the stopper 60 viewed from the direction of arrow A in FIG.

The stopper 60 has a hexagonal cross-sectional shape here, and forms three mutually parallel pairs of faces (hereinafter referred to as faces) 62A, 62B, faces 64A, 64B, and faces 66A, 66B. The stopper 60 can be fixed to the backing plate 40B by passing bolts through the through holes 62T facing each other.

Let L1 be the distance between the faces 62A and 62B, L2 be the distance between the faces 64A and 64B, and L3 be the distance between the faces 66A and 66B. That is, the cross-sectional shape of the stopper 60 is neither line-symmetrical nor rotationally symmetrical with respect to a line perpendicular to each facing surface. Here, the distance intervals are large in the order of L3<L1<L2.

Therefore, if the mounting surface of the stopper 60 to the backing plate 40B is different, the height of the stopper 60 will be different, and the height can be adjusted in three steps. The operator can adjust the height of the stopper 60 by adjusting the height of the blade 50 mounted on the backing plate 40B, the characteristics and type of the material P to be cut, or both.

FIG. 4A is a diagram showing a state in which the stopper 60 is installed so that the distance L1 between the facing surfaces 62A and 62B is equal to the height of the stopper 60. FIG. FIG. 4B is a diagram showing a state in which the stopper 60 is installed so that the distance L2 between the facing surfaces 64A and 64B is equal to the height of the stopper 60. FIG.

In FIG. 4A, the stopper 60 is fixed so that its surface 62B is in contact with the cutting die mounting surface 40S of the backing plate 40B (the surface 62A is in contact with the backing plate 40B). may be used). A cutting material P having a thickness t is mounted on the blade 50 . The height H (=L1) of the stopper 60 is the same length as the height H0 of the blade 50 including the blade.

Therefore, when the movable platen 20 rises during cutting and the stopper 60 comes into contact with the backing plate 40A of the stationary platen 10, the position of the cutting edge of the cutting die 50 coincides with the surface position of the backing plate 40A, as shown in FIG. 4A. do. As a result, the necessary cut portions of the material P to be cut are completely removed.

On the other hand, when half-cutting is performed, as shown in FIG. 4B, the stopper 60 is fixed so that the surface 64B is in contact with the blade mounting surface 40S of the backing plate 40B (the surface 64A is in contact with the backing plate 40B). ). A material to be cut P having a thickness t, which is made of a base material P2 and a sealing material P1 laminated thereon, is mounted on the cutting die 50 .

When the thickness of the base material P2 of the material P to be cut is t2 and the thickness of the sealing material P1 is t1, the height H (=L2) of the stopper 60 is equal to the height H0 of the blade 50 including the blade. , and the thickness t2 of the base material P2 of the material P to be cut. Therefore, when the stopper 60 comes into contact with the backing plate 40A of the stationary platen 10 during cutting, the cutting edge of the blade 50 matches the surface of the substrate P2 of the material to be cut, as shown in FIG. 4B. As a result, only the sealing material P1 is punched, ie, half-cut.

On the other hand, when the blade 50 having a height H0′ lower than the height H0 is installed on the backing plate 40B and full cutting or half cutting is performed, the surface 66B of the stopper 60 is the blade mounting surface 40S of the backing plate 40B. (surface 66A may be fixed in contact with caul plate 40B). As a result, when the stopper 60 abuts against the backing plate 40A of the stationary platen 10 during cutting, the cutting edge of the blade 50 matches the surface of the backing plate 40A or the surface of the substrate P2 of the material P to be cut.

For example, when the blade 50 is a Thomson blade, the distance L1 between the facings 62A and 62B is 23.65 mm, the distance L2 between the facings 64A and 64B is 23.70 mm, and the distance L3 between the facings 66A and 66B is 23.50 mm. , it is possible to configure the stopper 60 with a hexagonal cross section. When the blade 50 is a Thomson blade, the reference blade height is usually set at 23.60 mm.

For example, when performing a full punch, the surface 66B (or surface 66A) of the stopper 60 faces the blade mounting surface 40S of the backing plate 40B so that the height H of the stopper 60 becomes the distance L3 (=23.50 mm). installed together. A part of the cutting edge bites into the backing plate 40A, and die-cutting is performed reliably.

On the other hand, in the case of the material to be cut P, such as a thin film, in which a sealing material is laminated on the base material, half-cutting is performed so that the cutting edge does not bite into the base material. = 23.70 mm), the surface 64B (or surface 64A) is installed facing the blade mounting surface 40S. As a result, only the seal portion can be reliably peeled off after cutting.

In addition, half-cutting is also performed in which the cutting edge bites into a part of the material to be cut P, in which materials are laminated on the base material. In this case, the stopper 60 is installed so that the surface 62B (or the surface 62A) faces the blade mounting surface 40S so that the height H of the stopper 60 becomes the distance L1 (=23.65 mm).

Furthermore, when the height of the blade 50 is adjusted with respect to the reference height by attaching a curable synthetic resin plate (so-called PP plate) or the like to the bottom surface of the blade, the blade 50 may be higher than the reference height. When a Thomson blade with a very low height is used, when the thickness of the material P to be cut is different from the normal thickness, when a different cutting method is used depending on the material of the material P to be cut, etc. Also, the stopper 60 can be mounted on the blade mounting surface 40S so that the height H is within any of the distance intervals L1 to L3 according to the height of the blade and the characteristics of the material (or both). can.

For example, when the material P to be cut which is relatively thick, such as a rubber material, is to be completely punched, the movable platen 20 is moved using a position sensor or the like so that the cutting edge stops before reaching just before the back surface of the material to be cut P. It is stopped, and the elastic force of the material P to be cut completely pulls it out. It is possible to install the stopper 60 on the blade mounting surface 40S so as to have a height H of any one of the distances L1 to L3 in accordance with the height of the blade corresponding to such full-punching.

As described above, according to this embodiment, the cutting machine 100 has a hexagonal cross section, and the distances L1, L2, and L3 between the three facing surfaces 62A and 62B, the facing surfaces 64A and 64B, and the facing surfaces 66A and 66B are Equipped with different stoppers 60, the height when the stopper 60 is placed on the blade mounting surface 40S of the backing plate 40B is determined according to the height of the blade 50, the characteristics and type of the material P to be cut (target for half cutting, etc.). The height H can be adjusted stepwise.

The lengths of the distances L1, L2, and L3 may be determined according to the height of the prepared blade 50, the thickness of the material P to be cut, and the like. The sizes of the distance intervals L1, L2, and L3 are not limited to the order of L3<L1<L2, and stoppers 60 having various hexagonal cross-sections can be formed.

In addition, the stoppers 60 are installed on both sides of the blade 50, and it is necessary to match the height of both. However, since the lengths of the distances L1, L2, and L3 are not significantly different (for example, 1 mm or less), there is a possibility that the stoppers 60 are installed at different heights by mistake.

In order to prevent this, it is preferable to display indicators so that the operator can recognize the difference in height between the three facing surfaces 62A and 62B, the facing surfaces 64A and 64B, and the facing surfaces 66A and 66B. For example, numerical stamping may be performed for each face. Alternatively, the diameter of the end portion of the stopper 60 may be reduced to provide a stepped portion, and the stepped portion may be colored with a different color. The difference in height can be recognized without affecting the height due to face-to-face application.

Although the stopper 60 of this embodiment has a hexagonal cross section, it may have an octagonal or decagonal shape. In general, it is sufficient if the cross section has a 2n-sided shape (where n is an integer of 3 or more) in which the facing distances are different from each other.

Next, the stopper of the cutting machine according to the second embodiment will be described with reference to FIG. FIG. 5 is a schematic plan view of the stopper in the second embodiment.

Stopper 160 consists of a first plate 162 and a second plate 164 having opposite inclined surfaces 162S and 164S, which are arranged one above the other to form parallel plane plates. As in the first embodiment, the stopper 160 is arranged and fixed to the backing plate 40B such that its longitudinal direction is along the conveying direction.

The first plate 162 is slidable with respect to the second plate 164 along an inclined surface inclined at a small angle α with respect to the backing plate 40B. A threaded dial 166 is attached to the end of the first plate 162 . The first plate 162 relatively moves along the inclined surface 164S of the second plate 164 by the amount corresponding to the amount of operation of the screw-in dial 166 . As a result, the height of stopper 160 changes. The stopper 160 is provided with spaces 170 and 180 for restricting the amount of movement in accordance with the bolt fixing points of the backing plate 40B.

Scales S1 and S2 are provided on the same side surfaces of the first plate 162 and the second plate 164, respectively. The scales S1 and S2 are installed so as to be parallel to each other, and are marked with graduations so that relative positional deviation amounts of the scales S1 and S2 can be confirmed. The operator turns the screw-in dial 166 while checking the graduations of the scales S1 and S2 so as to obtain the desired height. The stopper 160 is preferably installed on the backing plate 40B so that the scales S1 and S2 face the side opposite to the cutting die 50. As shown in FIG.

Thus, according to the second embodiment, the stopper 160 is composed of the first plate 162 and the second plate 164 forming parallel plane plates, so that the height of the stopper 160 can be changed continuously. can be made As a result, it is possible to deal with various heights of the blade 50 and characteristics and types of the material P to be cut.

In this embodiment, the fixed platen 10 is arranged above and the movable platen 20 is arranged below, and the movable platen 20 is raised toward the fixed platen 10. However, the fixed platen is arranged below and the movable platen is arranged above. It can also be configured as a cutting machine. In this case, the cutter is attached to the movable platen, the material to be cut is placed on the fixed platen, and the movable platen is lowered to cut out the die. The stopper can be installed on the lower stationary platen.

In this embodiment, the cutting machine is configured as a hydraulic cutting machine, but it is also possible to configure a cutting machine that has a crank mechanism and is driven by a servomotor. It may also be applied to a cutting machine that performs press punching or the like.

REFERENCE SIGNS LIST 10 stationary platen 20 movable platen 40B backing plate 50 cutting die 60, 160 stopper 100 cutting machine

Claims (9)

a fixed platen;
a movable platen that can move up and down relative to the fixed platen;
a stopper installed on the blade mounting surface of the fixed platen or the movable platen to which the blade can be attached and restricting the movement of the movable platen from the cutting position toward the fixed platen;
According to the height of the blade mounted on the stopper and/or the characteristics of the material to be cut, the height from the blade mounting surface can be adjusted stepwise in at least three steps or continuously. A cutting machine characterized by comprising: The stopper is composed of a rod-shaped member having a 2n-sided cross-sectional shape (n is an integer of 3 or more) with different distances between facing faces,
2. The cutting machine according to claim 1, wherein the cutting machine is installed on the blade mounting surface so that the height of the blade to be mounted and/or the height according to the characteristics of the material to be cut. 3. The cutting machine according to claim 2, wherein said stopper is composed of a rod-shaped member having a hexagonal cross-section and having different distances between the three facing surfaces. 2. The cutting machine according to claim 1, wherein said stopper comprises first and second plate-like members that are continuously movable relative to each other along inclined surfaces facing each other, forming a plane-parallel plate. . 5. Cutting according to claim 4, characterized in that said first plate-like member is connected to a screw-in dial, and moves relative to said second plate-like member according to an operation on said screw-in dial. machine. 6. The cutting machine according to claim 4, wherein said first and second plate-shaped members are provided with scales which are parallel to each other and indicate graduations at positions facing each other on the same side. 7. The cutting machine according to claim 1, wherein the movable platen is driven and controlled by hydraulic pressure. Composed of bar-shaped members with 2n-sided cross sections (where n is an integer equal to or greater than 3) with mutually different facing distances,
A stopper that is installed on a fixed platen of a cutting machine to which a blade can be attached or a blade mounting surface of a movable platen and that restricts movement of the movable platen from a cutting position toward the fixed platen,
A cutter stopper, characterized in that it can be installed on the blade mounting surface so that the height of the blade to be attached and/or the height from the cutting surface of the blade corresponds to the characteristics of the material to be cut. Consisting of first and second plate-like members that are continuously movable relative to each other along inclined surfaces facing each other, forming parallel plane plates,
A stopper that is installed on a fixed platen of a cutting machine to which a blade can be attached or a blade mounting surface of a movable platen and that restricts movement of the movable platen from a cutting position toward the fixed platen,
The relative positions of the first and second rod-like members can be adjusted so that the height of the attached blade and/or the height from the cutting surface of the blade according to the characteristics of the material to be cut. A cutting machine stopper characterized by:

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