JPH1095000A - Foamed styrol cutting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To exactly and efficiently cut a foamed styrol block based on drawings and templates. SOLUTION: This device is a foamed styrol cutting device cutting a foamed styrol block 70 into a prescribed shape by moving a nichrome wire 40 in its energizing state in a two-dimensional direction. The cutting device is provided with a pair of operating arms 38 supporting the nichrome wire 40 in its extended state, a supporting mechanism 44 in which both of these operating arms 38 are supported so that they may operate to move the nichrome wire 40 in the two-dimensional direction, a reading mechanism 14 which can be operated in the two-dimensional direction according to drawings and templates set on a plane and a transmission mechanism transmitting the operations of this reading mechanism 14 as the operations of the operating arms 38.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a styrofoam cutting apparatus for cutting a block of styrofoam into various shapes with a conductive nichrome wire to produce a cut product.

[0002]

2. Description of the Related Art Conventionally, when cutting styrofoam, two pieces of styrofoam blocks are cut in advance to a size corresponding to a target cut product, and a veneer plate or a metal plate is cut out according to the outer shape of the cut product. Prepare a template. Then, the mold plates are arranged on both sides of the styrofoam block, and both ends of the energized nichrome wire are held by one or two workers, and the two molds are maintained while the nichrome wire is stretched. Move according to the board. This cuts the styrofoam block into a predetermined shape.

[0003]

However, as a practical matter, keeping the tension of the nichrome wire constant and accurately moving it along the template is a very difficult task. That is, the tension of the nichrome wire may be unstable, or the movement of the nichrome wire may not conform to the shape of the template, or the moving speed of both ends of the nichrome wire may not be uniform. Therefore, the shape and quality of the cut product are not stable, it is difficult to manufacture a complicated shape, and the work efficiency is poor.

Accordingly, one object of the present invention is to provide a styrofoam cutting apparatus which can cut a styrofoam block accurately and efficiently based on its drawings and templates even if the block has a complicated shape. Another object of the present invention is to provide a styrofoam cutting device which has high operability and can set a styrofoam block to be cut in a stable state.

[0005]

According to the first aspect of the present invention,
A styrofoam cutting device that cuts a block of styrofoam into a predetermined shape by moving an energized nichrome wire in a two-dimensional direction, and a pair of operating arms that support the nichrome wire in a stretched state. A supporting mechanism operably supported by both operating arms for moving the nichrome wire in a two-dimensional direction,
A reading mechanism operable in a two-dimensional direction following a drawing or template set on a plane, and a transmission mechanism for transmitting the operation of the reading mechanism as an operation of the operation arm. . Thereby, by operating the reading mechanism in accordance with the drawing or the template, the nichrome wire stretched between the pair of operating arms can move in a predetermined shape to cut the block of styrofoam. . Therefore, this cutting operation is performed accurately and efficiently.

According to a second aspect of the present invention, in the styrofoam cutting apparatus according to the first aspect, the reading mechanism is operable in a two-dimensional direction in a horizontal plane, and the two operating arms are connected to the nichrome wire in a vertical plane. Is set so as to be moved in a two-dimensional direction. According to the present invention, the reading mechanism can be operated in a horizontal plane, and the nichrome wire interlocking with this operation moves in a vertical plane, so that the reading mechanism has good operability and is cut by the nichrome wire. Styrofoam blocks can also be set on a horizontal surface.

[0007]

Embodiments of the present invention will be described below. 1 is an external perspective view of a styrofoam cutting device, FIG. 2 is a plan view of the styrofoam cutting device, and FIG. 3 is a front view of the styrofoam cutting device. As shown in these drawings, the frame of the Styrofoam cutting device is an upper plate 1
0 and a lower plate 12, a part of the upper plate 10 is a table 10a, and a part of the lower plate 12 is a work setting table 12a. The table 10a is a space for setting a drawing or a template (not shown) corresponding to a cut product to be manufactured from styrofoam, and the work setting table 12a is a space for styrofoam to be cut as shown in FIG. This is a space for setting the block 70.

On the upper surface of the upper plate 10, the table 1
The reading mechanism 14 is provided at a position closer to 0a. The reading mechanism 14 includes a first arm 16 and a second arm 22 whose one ends are rotatably connected. A copying pin 18 projecting toward the upper surface of the table 10a is fixed to the other end of the first arm 16, and the other end of the second arm 22 is rotatable with respect to the upper plate 10. Supported. Therefore, a detailed configuration of the reading mechanism 14 will be described below.

FIG. 4 is a sectional view taken along the line AA of FIG. As is clear from this drawing, the first arm 16
The connection between the first arm 1 and the second arm 22
The end of the second arm 22 is rotatably connected to the shaft 20 fixed to the end of the shaft 6 by a bearing 30. On the other hand, a support portion of the second arm 22 with respect to the upper plate 10 has a shaft 26 integrally connected to a bearing member 24 fixed to the upper surface of the upper plate 10, and the end of the second arm 22 is connected to the shaft 26. The structure is rotatably supported by a bearing 28.

The shaft 2 fixed to the first arm 16
The chain sprocket 21 is located at the upper end of
A chain sprocket 27 is rotatably supported on the shaft 26 at the upper end of the shaft 26 coupled to the bearing member 24. And these two chain sprockets 2
A chain 32 is hung between 1 and 27. The chain sprocket 27 has a two-stage structure in which a first drive pulley 34 is integrally formed on the upper surface side. The shaft 26 is provided on the upper surface of the second arm 22.
The second drive pulley 36 is fixed on the same coaxial line.

As shown in FIGS. 1 to 3, a pair of left and right operating arms 38 is supported by a support mechanism 44 at a position above the work mounting table 12 a on the lower plate 12. The support mechanism 44 includes a pair of left and right support arms 49 and 50 rotatably supported by a support bracket 45 fixed to the upper plate 10.
The base end of the operating arm 38 is rotatably supported at the lower end of the zero. A nichrome wire 40 for cutting the styrofoam block 70 is provided at the distal ends of the two operation arms 38. The nichrome wire 40 is supplied with electricity from a power source (not shown) through wiring.

FIG. 5 is a sectional view taken along line BB of FIG. The detailed structure of the support mechanism 44 will be described with reference to this drawing. First, a hollow shaft 46 is rotatably supported on a top surface of the support bracket 45 by a pair of bearings 48. A support shaft 52 is inserted into the hollow shaft 46 so as to be relatively rotatable.
Are projected outside the hollow shaft 46, respectively. The supporting arms 49, 5
The upper ends of the shafts 0 are rotatably supported by bearings 54, and both support arms 49 and 50 and the end of the hollow shaft 46 are integrally connected. That is, the two support arms 49 and 50 and the hollow shaft 46 can rotate relative to the support shaft 52.

A lower end of each of the support arms 49 and 50 has a shaft 4 fixed to the base end of each of the operation arms 38.
2 are rotatably supported by bearings 56, respectively. A first driven pulley 51 is fixed to a support arm 49 located on the left side of the drawing on the same axis as the hollow shaft 46 and the support shaft 52. Further, a second driven pulley 58 is fixed to an end of the support shaft 52 projecting toward the support arm 49. As is clear from FIGS. 1 and 2, a driving wire is provided between the first driving pulley 34 and the second driving pulley 36 of the reading mechanism 14 and the first driven pulley 51 and the second driven pulley 58, respectively. 66 and 68 are respectively hung.

Drive-side chain sprockets 60 are fixed to both ends of the support shaft 52, respectively. On the other hand, the driven side chain sprockets 62 are fixed to the individual shafts 42 fixed to the two operation arms 38, respectively. A chain 64 is hung between the two chain sprockets 60 on the driving side and the two chain sprockets 62 on the driven side.

Next, the operation of the styrofoam cutting device configured as described above will be described. First, a drawing and a template (not shown) of a cut product to be manufactured are set on the table 10a of the apparatus, and a block 70 of styrofoam which has been cut in advance to a size corresponding to the shape of the cut product is also set. As shown in FIG. 1, it is set on the work setting table 12a. By manually operating the first arm 16 of the reading mechanism 14, the copying pin 18 is moved in a two-dimensional direction indicated by arrows X1 and Y1 in FIGS.

The movement of the copying pin 18 in the direction of arrow X1 causes the shaft 20 fixed to the first arm 16 to rotate together with the chain sprocket 21 around its axis. The rotation of the chain sprocket 21
The power is transmitted to the chain sprocket 27 of the shaft 26 connected to the bearing member 24 through the chain 32 to rotate the chain sprocket 27 and the first drive pulley 34 integrated therewith. Further, the rotation of the first drive pulley 34 is transmitted to the first driven pulley 51 fixed to the support arm 49 of the support mechanism 44 via the drive wire 66. As a result, the two support arms 49 and 50 connected to each other by the hollow shaft 46 rotate about the axis of the hollow shaft 46, whereby the two operation arms 38 are synchronized with each other by the arrows in FIG. It reciprocates in the direction indicated by X2.

On the other hand, the arrow Y1 of the copying pin 18
The movement in the direction is performed by the second arm 2 of the reading mechanism 14.
2 is rotated about the axis of the shaft 26 connected to the bearing member 24, and as a result, the second drive pulley 36 is rotated about the axis of the shaft 26. The rotation of the second drive pulley 36 is controlled by the drive wire 68.
Is transmitted to the second driven pulley 58 fixed to one end of the support shaft 52. Accordingly, the support shaft 52 rotates together with the two chain sprockets 60 fixed to both ends thereof, and this rotation is transmitted through the individual chains 64 to the chain sprockets 62 fixed to the shafts 42 of the two operation arms 38. Each is transmitted. As a result, both operating arms 38 are reciprocally operated in synchronization with each other in the direction of arrow Y2 in FIG.

By operating the copying pin 18 of the reading mechanism 14 in a two-dimensional direction in a horizontal plane on the table 10a, the nichrome wire 40 stretched on the two operation arms 38 is set on the workpiece. It can be operated in a two-dimensional direction in a vertical plane perpendicular to the upper surface of the table 12a. That is, the copying pin 18 is connected to the table 1
By simply following the drawing or template set on the top surface of the Nichrome wire 40a, the Nichrome wire 40 can be moved as it is operated.
With 0, the styrofoam block 70 can be cut into a predetermined shape. Therefore, the operator need only concentrate on the operation of the reading mechanism 14, and even a cut product having a complicated shape such as a character or a mark can be easily manufactured in a short time.

As is clear from the above description, the two drive pulleys 34, 36 and the drive wires 66, 6
8, driven pulleys 51, 58, chain sprocket 6
0, 62 and a chain 64 for the reading mechanism 1
A “transmission mechanism” is configured to transmit the operation in the two-dimensional direction of No. 4 as the two-dimensional operation of the two operation arms 38. It is preferable that the nichrome wire 40 is held at a constant tension by a spring or the like.

[Brief description of the drawings]

FIG. 1 is an external perspective view of a styrofoam cutting device.

FIG. 2 is a plan view of a styrofoam cutting device.

FIG. 3 is a front view of the styrofoam cutting device.

FIG. 4 is a sectional view taken along line AA of FIG. 2;

FIG. 5 is a sectional view taken along line BB of FIG. 2;

[Explanation of symbols]

 14 Reading mechanism 38 Working arm 40 Nichrome wire 44 Support mechanism 70 Styrofoam block

Claims (2)

[Claims] 1. A styrofoam cutting apparatus for cutting a block of styrofoam into a predetermined shape by moving an energized nichrome wire in a two-dimensional direction. An operating arm, a support mechanism operably supported by each of the two operating arms for moving the nichrome wire in a two-dimensional direction, and a two-dimensional direction in accordance with a drawing or template set on a plane. An Styrofoam cutting device comprising: an operable reading mechanism; and a transmission mechanism for transmitting an operation of the reading mechanism as an operation of the operation arm. 2. The styrofoam cutting device according to claim 1, wherein the reading mechanism is operable in a two-dimensional direction in a horizontal plane, and the two operating arms move the nichrome wire in a two-dimensional direction in a vertical plane. A styrofoam cutting device, which is set to be moved.