JP2002036194A - Cutting device of styrol foam - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cutting device capable of contributing to the effective use of the used styrol foam having comparatively high bulk as a material in handicraft hour in an elementary school and a junior high school, or a material for handicraft and hobby for parent and child, aged persons or the like. SOLUTION: Struts are vertically fixed to both left and right side positions of a working table. A screw shaft is vertically supported inside of each strut, and a raising and lowering block screwed on the screw shaft is raised and lowered while guided by a guide rail fixed to an inner face of the strut. A rotary shaft is laterally hung over and bore at a lower position of the working table, the rotary shaft and the screw shaft are engaged with each other, and the rotary shaft is driven by an electric motor capable of being forwardly and backwardly rotated. A manual handle is fitted to a shaft end part of the rotary shaft.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a styrofoam cutting device, and more particularly to a styrofoam molded product used as a fish box or other packaging box in a fishery market, a home appliance, and various other products. Used as a box or cushioning material, a relatively bulky styrofoam molded product, which is discarded after taking out the product, is effectively used as a material for handicraft learning for elementary school students, junior high school students, parents and children and the elderly. You.

[0002]

2. Description of the Related Art As is well known, in the fishery market, a large amount of styrofoam used as a fish box is discarded,
Also, in department stores and home electronics retailers, styrofoam molded products are used for packaging boxes and cushioning materials in various types of packaging products, and the styrofoam molded products after taking out the products are discarded in large quantities. At present, reprocessing is not progressing easily from the viewpoint of economy.

[0003] This type of molded block is a material that can be used as a material in various forms depending on the device, and is particularly useful as a material for handicraft learning for elementary school students, junior high school students, parents and children, elders, and the like. It is a material that can be used. This requires a cutting device that can easily cut off unnecessary portions of a relatively large molded block that is discarded in a large amount.

By the way, the present inventor has long known that a styrofoam molding block, for example, having a thickness of 40 cm to 50 c.
m, width is about 90cm-1m, length is 180c
The industry has been to cut a molded block of about m to 2 m into materials of styrene foam of various sizes.

[0005] As a cutting device for this purpose, a round bar-shaped column made of brass is vertically raised and supported at appropriate intervals on the left and right, and a rail is laid on the floor between the left and right columns.
A trolley on which a styrofoam processing material is placed is pushed in and passes over the rail, and at least two to three nichromes are provided between the posts positioned above the trolley surface, with an appropriate interval up and down. Stretch the wire so that it can be energized,
If there are many, a large number of cutting devices with approximately 25 nichrome wires stretched so as to be able to conduct electricity are arranged on the transport line, and through the various types of cutting devices, the styrofoam is reduced to the required order size. It was processed into cut material.

[0006]

However, in the case of the cutting device, the cutting device is hand-made for business in consideration of workability, and the vertical spacing of a large number of nichrome wires stretched between columns is set. The changing operation is performed by manually changing one by one at predetermined intervals or preparing a large number of cutting devices in which a large number of nichrome wires are stretched at predetermined intervals in advance. Was.

On the other hand, recently, as a manual tool for cutting Styrofoam, a battery housing portion also serving as a handle is formed at the base end, and a U-shaped metal frame is attached to the tip end of the handle, and the U-shaped metal frame is attached. A nichrome wire is stretched at the open end of the frame, and the battery power is turned on, causing the nichrome wire to generate heat, thereby cutting characters from the styrofoam material,
There is a commercially available tool called a foam cutter, which is capable of making a cut picture or the like.

[0008]

However, in the case of the manual tool, only a relatively small material within the depth of the U-shaped frame can be dealt with.
Because it is a form of use that holds a hand tool with one hand and a styrol piece on the other hand, its use is mainly
It is limited to the work of single items such as the cut characters and cutouts described above,
It cannot be used for bulky Styrofoam.

[0009]

Therefore, according to the present invention, according to the present invention, a nichrome wire is stretched on a column facing each other at an interval, and a current is supplied to the nichrome wire. In the styrofoam cutting device, the supporting column supports a screw shaft that rotates synchronously, and the nichrome wire is stretched on an elevating block that is screwed to the screw shaft and guided up and down. And

As a result, the nichrome wires stretched between the columns move up and down evenly in synchronization with each other, so that it is not necessary to extend the nichrome wires one by one and adjust the height as in the conventional case. But it can be handled easily. In particular, bulky used styrofoam is extremely useful as a material for craft learning in elementary and junior high school students, or as a material for craft learning and hobby for parents and children, elders, and the like, and for promoting its effective use.

According to a second aspect of the present invention, the rotating shaft meshing with the screw shaft is rotated by an electric motor to automatically raise and lower the lifting block screwed to the screw shaft, and the rotating shaft is rotated by a manual handle. By doing so, the lifting block is manually raised and lowered. Therefore, the operation of raising and lowering the nichrome wire by the electric motor is performed quickly, and the height position of the nichrome wire is conveniently and finely adjusted easily.

According to a third aspect of the present invention, a work table is installed on a frame-structured pedestal, and a column is fixed vertically on both left and right positions of the work table, and a nichrome wire guide passage is formed inside the column. Vertically supporting the screw shaft inside the, the lifting block screwed to the screw shaft is guided by a guide rail fixed vertically to the inner surface of the support column, so as to move up and down,
At the lower side of the work table or at the upper position of the column, a rotating shaft is supported in a horizontal direction across the bearing, and the rotating shaft and the screw shaft are engaged with each other, so that the rotating shaft can rotate forward and reverse. It is configured to be driven by a motor.

According to a fourth aspect of the present invention, the rotary shaft is laterally extended to the lower side of the work table in the third direction to support the bearing, and the rotary shaft and the screw shaft are meshed and engaged by a bevel gear. A chain is suspended between a driven sprocket fitted to the output shaft of the electric motor that is rotatable forward and reverse and a drive handle attached to the output shaft, and a manual handle is provided at the shaft end of the rotating shaft. A guide pulley is pivotally mounted on the elevating block, and a tube inserted through a wire connected and fixed to both ends of the nichrome wire is supported by the guide pulley, and a distal end of the wire and the elevating block are supported. A coil spring is hung between the spring hook pieces protruding from the left and right sides, and the nichrome wire P extended to the left and right elevating blocks 7 is stretched and supported by this.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings. In the drawings, reference numeral 1 denotes a flat work table, which is fixedly mounted on a base 2 having a box frame shape, and on both left and right sides thereof. A box-shaped support M is vertically installed and fixed substantially at the center of the front and rear positions. As shown in the plan sectional view of FIG. 7, the column M has an L-shaped vertical frame 3 which is raised and fixed at an inner position, and has a flat cross section fitted and fixed at the outer position thereof. And a frame cover 4 shaped like a letter. On one side of the inner side of the column M, a guide hole 5 for the nichrome wire P extending between the columns M facing left and right is formed vertically long.

Reference numeral 6 denotes a screw shaft which is vertically supported and supported inside the column M.
As shown in FIGS. 3 to 7, the ascending / descending block 7 is guided by a guide rail 8 fixed vertically to the inner surface on the side of the vertical frame 3, and moves up and down. Reference numeral 9 denotes a guide piece fixed inside the elevating block 7, and the guide piece 9 engages with the guide rail 8 and is slidably guided.

Reference numeral 10 denotes a frame 2 below the work table 1,
As shown in FIGS. 2, 4, and 5, a rotating shaft which is supported by bearings extending in the left-right direction, and a driven sprocket 11 fitted to one of the rotating shafts and an output shaft of an electric motor D rotatable in both forward and reverse directions. A chain 13 is supported between the fitted drive sprocket 12 and the chain.

Reference numeral 14 denotes a bevel gear fitted and fixed to the lower end portion of the screw shaft 6, which meshes with and engages with the bevel gear 15 fitted and fixed to the rotary shaft 10.
A rotating handle 16 is fitted and fixed to a shaft end of the rotating shaft 10 protruding to one side from a lower position of the rotating shaft 10.

4 to 7, reference numerals 17 and 18 denote guide pulleys attached to the side and bottom of the elevating block 7, and the guide pulleys 17 and 18 are connected and fixed to both ends of the nichrome wire P. A heat-resistant insulating tube 20 through which a non-conductive wire 19 is inserted is supported by a hook,
A coil spring 22 is hung between the end of the rod 9 and the spring hook 21 projecting from the elevating block 7, and the nichrome wire P inserted between the left and right columns M is stretched and supported in tension. ing. As shown in FIG. 4, an electric cord 23 for energizing the nichrome wire P is also connected to a connecting portion between one base end of the nichrome wire P and the base end of the non-energizing wire 19.

In FIGS. 1 and 7, reference numeral 24 denotes a scale which is formed vertically at the edge of the frame cover 4 and indicates the height of the nichrome wire P stretched between the left and right supports M from the work table 1. indicate.

In FIG. 4, reference numeral 25 denotes a limit switch for detecting the rising end of the lifting / lowering block 7, and reference numeral 26 denotes a limit switch for detecting the falling end of the lifting / lowering block. The switches 25 and 26 stop the motor drive immediately before reaching the rising end or the falling end.

The control device C of the present apparatus is incorporated in the gantry 2 as shown in FIGS. 1 and 3, and includes a voltage controller 27 for raising and lowering the voltage of the nichrome wire P by a dial, and an ammeter 28 therefor. ing. Further, a changeover switch 29 that raises (displays an upward arrow) or lowers (displays an downward arrow) the nichrome wire P, turns off (stops) and turns on (elevates) the electric motor D, and energizes (disconnects) the nichrome wire P ), And further includes turning on the energization of the nichrome wire P and driving the electric motor D.
A power lamp 31 for displaying N is displayed. 3
Reference numeral 2 denotes wheels mounted on the four corner legs of the gantry 2.

In order to raise the height of the nichrome wire P from the work table 1 to a predetermined height, the changeover switch 29 is switched in the upward direction, and the changeover switch 30 of the electric motor D is turned on. Then, the electric motor D makes a forward rotation, for example, clockwise, and moves the lifting block 7 upward via the rotating shaft 10, bevel gears 14 and 15, and the screw shaft 6.

As a result, the nichrome wire P stretched between the right and left columns M moves upward, and the switch 30 is turned off at an appropriate height position using the scale 24 as a guide to stop driving the motor.

Then, in order to finely adjust the height position of the nichrome wire P to the height position with reference to the scale 24, the cutting height is finely adjusted by rotating the manual handle 16 in the forward and reverse directions.

Before or after that, the voltage controller 27
After turning the dial to adjust, the switch 30 is switched to the energized side to the Nichrome wire P to energize.
Then, the nichrome wire P is heated.

Thereafter, the styrofoam material to be processed is placed on the work table 1 and pushed in along the table surface, whereby the styrofoam P is cut by the heated nichrome wire P.

When the styrofoam material is cut into a circular shape, a fan shape, an oval shape, a heart shape, or the like, a template having a required shape is previously formed from a tin plate. The styrofoam is cut into a form similar to the styrofoam by operating the styrofoam including the template by hand while touching the nichrome wire P while holding the template in contact with the styrofoam.

For example, when a shelf is made using a styrofoam fish box, one side of the fish box is cut off, and the side plate portion is cut off in an arc shape to adjust the form and stack several bodies. A multi-stage shelf board can be made by arranging them side by side and fixing the butted portions with an adhesive, or by inserting nails and joining them together as necessary.

In the above case, the rotating shaft 10 is connected to the support M
, And the electric motor D is also installed at the upper end of the column M, and the rotary shaft 10 is rotated in the same manner as described above. It can also be free.

[0030]

According to the present invention, there is provided a styrofoam cutting apparatus in which a nichrome wire is stretched on a pole facing each other at an interval as described above, and a current is applied to the nichrome wire. Supports the screw shaft which rotates synchronously, and stretches and supports the nichrome wire on the lifting block which is screwed to the screw shaft and guided up and down, so that the nichrome wire stretched between the columns is synchronized. To move up and down evenly. Therefore, there is no need to adjust the height by wrapping the nichrome wires one by one as in the conventional case, and any number of people can handle the wire easily.

In particular, a relatively bulky used polystyrene foam is extremely useful for promoting the effective use of the material as a material for craft learning for elementary and junior high school students, or as a material for craft learning and hobby for parents and children, elders and the like. is there.

Further, as described in claim 2, the rotating shaft meshing with the screw shaft is rotated by an electric motor, so that the lifting block screwed to the screw shaft is automatically raised and lowered, and the rotating shaft is manually moved. Since the lifting block is manually raised and lowered by rotating the handle, the raising and lowering operation of the nichrome wire by the electric motor is performed quickly, and the fine position of the height of the nichrome wire is easily adjusted. It is also convenient.

[Brief description of the drawings]

FIG. 1 is a perspective view showing the general outline of the present apparatus.

FIG. 2 is a front view of the same, showing the inside of a support column in perspective, and showing a state in which a nichrome wire is at a descending end by a solid line and a state in which it is at a rising end by an imaginary line.

FIG. 3 is a side view of the same, similar to FIG. 2, showing the inside of the support column as a solid line when the nichrome wire is at the lower end, and with an imaginary line when it is at the upper end. Is shown.

FIG. 4 is a perspective view showing a lifting block incorporated in the column cover with a frame cover of one of the columns removed, and a driving device and the like thereof.

FIG. 5 is a front view showing the elevating block and a main part of a driving device for the elevating block, in which the lower limit switch is removed, in which the column is cut longitudinally.

FIG. 6 is a partially cutaway longitudinal sectional side view showing a main part of FIG. 5;

FIG. 7 is a plan sectional view of one support.

[Explanation of symbols]

 M Post D Electric motor P Nichrome wire C Control device 1 Work table 2 Stand 3 Vertical frame 4 Frame cover 5 Guide passage 6 Screw shaft 7 Elevating block 8 Guide rail 9 Guide piece 10 Rotary shaft 11, 12 Sprocket 13 Chain 14, 15 Umbrella Gear 16 Manual handle 17, 18 Guide pulley 19 Wire 20 Insulation tube 21 Spring hook 22 Coil spring 23 Electric cord 24 Scale 25, 26 Limit switch 27 Voltage controller 28 Ammeter 29, 30 Changeover switch 31 Power lamp

Claims (4)

[Claims] 1. A styrofoam cutting apparatus in which a nichrome wire P is stretched on posts M facing each other at an interval, and the Nichrome wires P are energized. Screw shaft 6 that rotates
A styrofoam cutting device, wherein the nichrome wire P is stretched and supported on an elevating block 7 which is screwed to the screw shaft 6 and guided up and down. 2. An electric motor D rotates a rotary shaft 10 meshing with the screw shaft 6 to automatically raise and lower the lifting block 7 screwed to the screw shaft 6. 2. The styrofoam cutting device according to claim 1, wherein the lifting block 7 is manually lifted and lowered by a rotary operation. 3. A work table 1 is mounted on a frame 2 having a frame, and a column M is vertically fixed at both left and right positions of the work table 1, and a guide passage 5 for a Nichrome wire P is formed inside the work table M. The screw shaft 6 is vertically supported and supported inside the column M, and the elevating block 7 screwed to the screw shaft 6 is guided by a guide rail 8 fixed vertically to the inner surface of the column M to move up and down. So that the lower side of the work table 1 or the support M
In the upper position, the rotating shaft 10 extends in the left-right direction to support the bearing, and the rotating shaft 10 and the screw shaft 6 are supported.
Characterized in that the rotating shaft 10 is driven by an electric motor D which is rotatable in the forward and reverse directions. 4. A rotating shaft 10 is provided at a lower position of the work table 1.
And the screw shaft 6 is meshed and engaged by bevel gears 14 and 15, and a driven sprocket 11 fitted to the rotating shaft 10 is electrically driven by the electric motor, which is rotatable in the forward and reverse directions. A chain 13 is suspended and supported between a drive sprocket 12 fitted to an output shaft of the motor D, and a manual handle 16 is fitted to a shaft end of the rotating shaft 10. The guide pulleys 17 and 18 are pivoted, and the guide pulleys 17 and 18 are
The wire 19 fixed to both ends of the nichrome wire P
And a coil spring 22 is hung between the end of the wire 19 and a spring hook 21 protruding from the elevating block 7, whereby the left and right elevating blocks 7 are 4. The styrofoam cutting apparatus according to claim 3, wherein the nichrome wire P inserted into the styrofoam is stretched and supported.