JP3142694U - Styrofoam cutting device - Google Patents

Abstract

[Problem] To provide a cutting device for polystyrene foam that is simple in structure, low in production cost, easy to move and handle, and particularly used for heat insulation of a house with a large number of oblique plane cutting.
A rotating shaft bolt is provided at a lower part of a pair of slide columns provided in parallel and opposite to each other, a slide frame that is fitted to the outer periphery of the slide column and slides up and down is provided, and a nichrome wire is provided at an inner lower part of the slide frame. An attachment part is provided, an inverted U-shaped work cutting unit is provided at the upper part of the slide frame, and a table that can be horizontally or tilted is placed on the upper part of the base part. The table is provided with an L-angle bracket that has a hinge at one end and is fixed vertically so that the other end can be moved up and down, and has an insulating property formed by a bakelite or the like at the nichrome wire mounting portion at the bottom of the slide frame. An insulating material having a nichrome wire attaching portion and a tension spring at a lower portion of the insulating material; a table at a lower portion of the table; and a moving caster at the lower portion of the table. Polystyrene foam for the cutting device.
[Selection] Figure 2

Description

  The present invention relates to an apparatus capable of appropriately thermally cutting a polystyrene foam, a foamed resin, or the like in a left-right direction, a front-rear direction, and a vertical direction.

Conventionally, what is known as this type of thermal cutting apparatus includes those described in Patent Document 1, Patent Document 2, 3, and the like.
In Patent Document 1, a pair of guide pillars are provided on the opposite side walls of the base portion, and a heat-cutting portion formed by laying a heat-cutting nichrome wire in the opening of the inverted U-shaped frame body so that the nichrome wire crosses the base portion. Mounted on the guide pillar so that it can be raised and lowered, provided on the top of the base with a groove that allows the nichrome wire to pass through, and provided on the base with a power supply that feeds the nichrome wire. Thus, it is proposed that not only the cutting in the downward direction but also the cutting in the horizontal direction and the upward direction can be performed, and that the power supply to the nichrome wire is automatically stopped upon completion of the cutting. Further, in this document, it is proposed that a plurality of moving casters are provided on the outer surface of the side wall of the pedestal to facilitate the movement of the apparatus.

  Further, in Patent Document 2, a support column is vertically fixed at both the left and right positions of the work table, a screw shaft is vertically supported inside the support column, and a lifting block screwed to the screw shaft is fixed to the inner surface of the support column. The shaft is guided by the guide rail and is moved up and down, and at the lower position of the work table, the rotary shaft is passed in the left-right direction to be engaged, and the rotary shaft and the screw shaft are engaged with each other. A cutting device for foamed polystyrene driven by a rotatable electric motor has been proposed, and a cutting device that contributes to effective use of foamed polystyrene for elementary and junior high school students, parents and children, seniors, and the like has been proposed.

  Furthermore, in Patent Document 3, a surface plate is provided on the main body frame, two support columns are set up on the end side in front of the surface plate, and a lifting body that can freely move up and down is provided on each support column via a guide member. Between the lifting bodies, the heating wire is stretched in tension via a tension coil spring, and a polystyrene foam workpiece is placed on the surface plate according to the cutting dimensions, and the mounting bolts that fixed the lifting body are loosened. And a lifting device for foaming resin that cuts the workpiece while the heating body descends along the column due to its own weight and the heating line is sequentially pressed from the upper surface side of the workpiece. There has been proposed a foamed resin cutting device that can be made compact.

  However, in the above-mentioned Patent Document 1, the nichrome wire is stopped while being lowered, the workpiece can be horizontally moved and cut in the horizontal direction, the workpiece is held with one hand, and the nichrome wire is raised with the other hand. It is possible to cut complex shapes with the combination of operations shown on the left, but in order to perform diagonal plane cutting, the workpiece and nichrome wire must be simultaneously cut by a human hand, and a clean diagonal plane cutting is possible. It was impossible to do.

Further, in Patent Document 2, it is difficult to cut an oblique plane as in Patent Document 1, and there is a constraint that the cost of the equipment becomes high because a complicated mechanism is provided to improve operability. It was.
Further, in Patent Document 3, it is difficult to cut an oblique plane as in Patent Documents 1 and 2, and it is necessary to have a complicated configuration to increase the cutting accuracy, and there is a constraint that the cost of the equipment becomes high. there were.

Japanese Utility Model Publication No. 6-5900 JP 2002-36194 A JP-A-8-276400

  In view of the current state of the prior art as described above, the present invention provides a cutting device for foamed polystyrene used for heat insulation outside a house, which has a simple structure, is low in production cost, is easy to move and handle, and has a large number of oblique plane cuttings. The task is to do.

  As a result of intensive studies to solve the above-mentioned problems, the inventor provided a rotating shaft bolt at a lower part of a pair of slide columns provided in parallel and opposed to each other in a foamed polystyrene cutting device, and fitted on the outer periphery of the slide column. In addition, a slide frame that slides up and down is provided, a nichrome wire attachment part is provided at the lower inner side of the slide frame, an inverted U-shaped work cutting unit that is firmly attached to the upper end of the slide frame by a push-cut handle is provided, It has been found that by placing a horizontal or tiltable table on the surface, a styrofoam cutting device that has a simple structure and can be easily cut obliquely can be constructed, and the present invention has been completed.

In the apparatus of the present invention, it is desirable to provide a hinge at one end of the table and an L-angle metal fitting to fix the table vertically at the other end.
In addition, it is desirable that the nichrome wire attaching portion at the lower inner side of the slide frame is provided with an insulating material formed of bakelite or the like, a terminal made of phosphor bronze spring material or the like, and a tension spring.
Furthermore, it is desirable to provide a gantry on the lower base portion of the table and to provide a moving caster at the lower part of the gantry.

The cutting device for polystyrene foam of the present invention can cut an object to be cut vertically as well as can easily perform oblique plane cutting at any angle, can be manufactured at low cost, is easy to move and handle, and works in the field. It has excellent effects such as being able to cope with various changes.
In addition, the device of the present invention has a simple structure, is inexpensive to manufacture, is easy to move and handle, and is particularly easy to cut a polystyrene foam used for heat insulation outside a house where there are many oblique plane cuts. In addition, it is effective not only for the expanded polystyrene but also for the organic expanded material having the same properties as the expanded polystyrene, but it can also be applied to cutting wood in addition to the expanded material.
Furthermore, the device of the present invention is easy to move and handle, and can cope with various changes in the field work environment.

Hereinafter, an embodiment of a cutting device for foamed polystyrene according to the present invention will be described with reference to FIGS.
(Embodiment)
FIG. 1 is a side view showing the embodiment.
In the figure, reference numeral 100 denotes a slide column which is formed from a square column made of steel or the like, and a bolt 110 for a rotary shaft which is provided in the lower portion of the slide column 100 and serves as a rotary shaft is formed from a steel plate or the like provided on a side surface. The slide column 100 is inserted through a rotation shaft hole 111 provided in the angle adjustment plate 120 and fixed to the left and right as indicated by arrows in FIG.
The angle adjustment plate 120 is formed in an L shape (not shown), and is fixed to the base portion 130 by welding, screws, or the like. 121 is a guide hole provided in the angle adjusting plate 120 in a semicircular shape, and includes a knob 102 for tightening the angle indicating needle 101 provided at the lower part of the slide column 100, and the slide column 100 includes It is screwed.

Reference numeral 122 denotes an angle indicating plate in which an angle scale is engraved on the aluminum plate, and is firmly fixed to the angle adjusting plate 120 with a double-sided adhesive tape such as # 500 made by Nitto Denko.
Reference numeral 140 denotes a control panel, which is fixed to a receiving plate 124 provided on a support column 123 fixed vertically to the base portion 130. Reference numeral 150 denotes an inverted U-shaped work cutting unit which is composed of slide frames 151 and 152 and a handle 153 (see FIG. 2) for connecting the slide frame 151 and the slide frame 152. The slide frame 151 is arranged on the outer periphery of the slide column 100. 152, the inner periphery is fitted, and the handle 153 is manually moved up and down to slide the inverted U-shaped work cutting unit 150 up and down (in the direction of the up and down arrows in FIG. 2).

Reference numeral 154 denotes a fixed knob, which fixes the inverted U-shaped work cutting unit 150 by screwing at an arbitrary position in the vertical direction of the slide column 100.
When the inverted U-shaped work cutting unit 150 is slid up and down, the fixing knob 154 is not tightened. Reference numeral 160 denotes a pedestal on which the base portion 130 is fixed via an L-angle member 161 made of sheet metal, and includes a caster 162 at the bottom. By selectively attaching and detaching the L-angle member 161, the base portion 130 and the mount 160 are separated and joined.
131 is an adjustment bolt provided at the lower four corners of the base part 130, and adjusts the level when the base part 130 is installed separately from the mount 160.

In FIG. 2, reference numeral 163 denotes a reinforcing metal fitting for continuously reinforcing the lower part of the gantry 160. Reference numeral 164 denotes an adjusting bolt screwed into the lower part of the four corners of the pedestal 160, which lifts the pedestal 160 so that the pedestal 160 does not move by releasing from the rolling operation of the caster 162, and adjusts the level.
Reference numerals 132 and 133 denote workpiece guides provided to face the upper surface of the base portion 130. In particular, the guide 133 is a bolt nut inserted through a long hole 134 (see FIG. 3) provided in the base portion 130. (Not shown), and is selectively moved as needed to guide the fitting width of the object to be cut.
Reference numeral 170 denotes a table, one end of which is rotatably fixed to the base portion 130 via a hinge 171, and the base portion is connected to an L-angle bracket 173 provided with a long hole 172 provided in the vertical direction at the other end portion. 130 is fixed.

  The table 170 is provided as a pair separated in the front-rear direction in FIG. 2, and is fixed to the base portion 130 so as to be separated in parallel as shown in FIG. 3. The L-angle metal fitting 173 can selectively move and contact with a plurality of screw holes 174 provided in the base portion 130, and the inclination of the table 170 'can be adjusted. That is, when the L angle 173 is positioned at the position shown in FIG. 2, the inclination of the table 170 ′ is gentle, and at the position of the screwing hole 174 shown in FIG. 3, the inclination of the table 170 ′ is adjusted to be steeper than the above. be able to.

  In FIG. 2, 180 is a cover of nichrome wire 190, which is made of a steel plate or the like and is formed in a U-shape. FIG. 4 shows an enlarged perspective view of the main parts at both ends of the cover 180, and the inside dimension W1 of the U-shaped cover 180 is slightly larger than the width W2 of the slide frames 151 and 152 shown in FIG. Both ends of the U-shaped cover 180 slide while sandwiching the slide frames 151 and 152. A roller guide 181 rolls in contact with the inner side surfaces 155 and 156 of the slide frames 151 and 152 of the inverted U-shaped work cutting unit 150.

  With the above configuration, when an upward force is applied to the lower end 183 of the cover 180, the cover 180 easily rises. Moreover, when the force in the upward direction is lost, the vehicle descends by its own weight. Further, a bending flange 184 is formed at the lower end 183 of the cover 180 so that the cover 180 can be easily removed by lifting the cover 180 obliquely by hand. The bending flange 184 contacts when the foamed polystyrene is cut, and protects it from being damaged. Reference numeral 182 denotes exhaust holes through which warm air heated by the nichrome wire 190 is released, and a plurality of exhaust holes 182 are provided on both side surfaces of the U-shaped cover 180.

FIG. 5 is an enlarged front view of the main part of both sides of the nichrome wire 190 mounting part 200. Reference numeral 191 denotes a heater receiving block fixed to the inner surface 155 of the lower end of the slide frame 151 by welding or the like. A guide shaft 192 for guiding the material 193 is provided so as to protrude integrally.
The guide shaft 192 passes through the insulating material 193 and is slidably fitted.
Reference numeral 194 denotes a spring which receives one end with a screw 195 and a washer 196, and the other end abuts against the insulating material 193, and the insulating material 193 is pressed against the heater receiving block 191.

The screw 195 penetrates the insulating material 193 and is screwed into a screw hole 199 provided in the heater block 191. Reference numeral 197 denotes a terminal made of a phosphor bronze spring material or the like and formed in an L shape. The terminal 197 is fixed to the insulating material 193 with a screw or the like, and a nichrome wire 190 is screwed to the other end with a screw 198.
The screw 198 is a screw that can be tightened by hand without using a tool. A two-dot chain line 180 shown in FIG. 5 shows a state in which the U-shaped cover 180 is incorporated, and the roller guide 181 abuts on the insulating material 193 and supports the cover 180.

In FIG. 3, the control panel 140 includes a power cord 141 and a foot switch 142. When the foot switch 142 is pressed, the nichrome wire 190 is energized. When the nichrome wire 190 is energized, the nichrome wire 190 having a large current resistance is heated.
The operation panel 143 of the control panel 140 includes a power switch 144 that also serves as a power-off control, an energizing lamp 145, and a cut-off lamp 146. The power switch 144 can freely set the voltage applied to the nichrome wire 190 depending on the foaming density of the polystyrene foam. When the voltage is increased, the current increases, and the temperature of the nichrome wire 190 further increases.
The cut-off lamp 146 is turned on when the foot switch 142 is pressed, and is turned off when the foot switch 142 is pressed again, and the energization to the nichrome wire 190 is stopped. The drawing for connecting the wiring such as the nichrome wire 190 to the control panel 140 is routed by a known means (not shown).

  In the above configuration, when the foamed polystyrene is cut vertically, the foamed polystyrene is first placed on the table 170, the guide 133 is moved and adjusted, the foamed polystyrene is set, the foot switch 142 is pressed, and the nichrome wire 190 is heated to a predetermined temperature. After that, the handle 153 is pushed vertically downward to push out the polystyrene foam. At this time, the lower end bending flange 184 of the cover 180 remains in contact with the foamed polystyrene surface, the roller guide 181 rolls inside the slide frames 151 and 152, and both ends of the U-shaped cover 180 are slid The frames 151 and 152 are nipped and slid, and only the nichrome wire 190 is lowered to cut the polystyrene foam.

FIG. 6 is a perspective view showing the state after cutting the expanded polystyrene.
Next, when the expanded polystyrene is cut obliquely on the plane, the cover 180 is first removed from the expanded polystyrene cutting device, the knob 102 is loosened, the angle indicating needle 101 is set to the desired angle θ on the angle indicating plate 122, and the knob 102 is tightened.
At the position A shown in FIG. 1, the handle 153 is pushed obliquely downward. The operation of the foot switch 142 is the same as above. FIG. 7 is a perspective view showing the state after cutting the expanded polystyrene.

When the foamed polystyrene is cut obliquely in the longitudinal direction, first, the table 170 ′ is first inserted into a desired angle indicated by a two-dot chain line shown in FIG. 2 with a bolt (not shown) passing through the long hole 172 of the L angle 173. 1 is removed, the U-shaped cover 180 is removed, the fixing knob 154 shown in FIG. 1 is loosened, the handle 153 is pushed downward, the nichrome wire 190 is set at a predetermined position, and the fixing knob 154 slides. The frames 151 and 152 are fixed to the slide column 100. Further, the guide 133 is fitted and set to the expanded polystyrene.
After the foot switch 142 is pressed and the nichrome wire 190 is heated to a predetermined temperature, the foamed polystyrene is pressed against the nichrome wire 190 and is cut while the foamed polystyrene is slid on the table 170 ′ with a human hand. FIG. 8 is a perspective view showing the state after cutting the expanded polystyrene.

Further, when the foamed polystyrene is cut into a thin plate shape in the longitudinal direction, the table 170 is set at the position shown by the solid line in FIG. 2, the nichrome wire 190 is set at a predetermined position, and the same operation as described above may be performed. .
FIG. 9 is a perspective view showing the state after cutting the expanded polystyrene.
When the nichrome wire 190 is set, the nichrome wire 190 is screwed to the terminal 197 with the screw 198 while the insulating material 193 is positioned by hand in FIG. 5 and the spring 194 is compressed. . Thereafter, if the hand is released, the nichrome wire 190 can be stretched, and since the terminal 197 also has a spring property, double tension can be applied to the nichrome wire 190, and the nichrome wire in operation The 190 slack can be prevented.

There are two ways to move and use the inventive cutting device for polystyrene foam.
One is that each caster 162 at each of the four corners of the pedestal 160 is moved to a position B and each adjustment bolt 164 is moved to a position D above B. When used, the adjustment bolt 164 is set to a position C. Second, the L angle 161 shown in FIG. 2 can be removed and removed, the frame 160 can be separated, and the lighter upper cutting device body can be handled and used in a state where the working height is lowered. . Alternatively, it can be installed on a separate workbench in the field situation. At this time, the level of the cutting device main body is adjusted by the just bolts 131 at the four corners.

The side view of the cutting device of this invention. The front view of the cutting device of this invention. The top view of the cutting device of this invention. The principal part expansion perspective view of the cutting device of this invention. The principal part enlarged front view of the cutting device of this invention. The external view after cutting a polystyrene foam of the cutting device of this invention. The external view after cutting a polystyrene foam of the cutting device of this invention. The external view after cutting a polystyrene foam of the cutting device of this invention. The external view after cutting a polystyrene foam of the cutting device of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 Slide pillar 101 Angle indicator needle 102 Knob 110 Rotating shaft bolt 111 Rotating shaft hole 120 Angle adjusting plate 121 Guide hole 122 Angle indicating plate 123 Support column 124 Base plate 130 Base part 131 Adjustment bolt 132 Guide 133 Guide 134 Long hole 140 Control panel 141 Power cord 142 Foot switch 143 Operation panel 144 Power switch 145 Energizing lamp 146 Cutting ON lamp 150 Reverse U-shaped work cutting unit 151 Slide frame 152 Slide frame 153 Handle 154 Fixing knob 155 Inner side 156 Inner side 160 Mounting base 161 L angle Material 162 Caster 163 Reinforcing bracket 164 Adjust bolt 170 Table 170 ′ Table 171 Hinge 172 Long hole 173 L Angle bracket 174 Screw hole 180 Cover 181 Roller guy 182 Exhaust hole 183 Lower end 184 Bending flange 190 Nichrome wire 191 Heater receiving block 192 Guide shaft 193 Insulating material 194 Spring 195 Screw 196 Washer 197 Terminal 198 Screw 199 Screw hole 200 Nichrome wire 190 mounting part

Claims (4)

  A rotating shaft bolt 110 is provided at the lower part of a pair of slide columns 100 provided in parallel to face each other, slide frames 151 and 152 which are fitted on the outer periphery of the slide column 100 and slide up and down are provided, and the slide frames 151 and 152 are provided. A nichrome wire 190 mounting portion 200 is provided at the inner lower portion, an inverted U-shaped work cutting unit 150 is provided at the upper end of the slide frames 151 and 152 and is fixed by a push-cut handle 153, and can be horizontally or inclined at the upper portion of the base portion 130. A cutting device for foamed polystyrene, wherein a table 170 is placed.   The cutting device for a polystyrene foam according to claim 1, wherein the table (170) is provided with a hinge (171) at one end and an L-angle metal fitting (173) for fixing the table to be vertically movable at the other end.   An insulating material 193 formed of bakelite or the like is provided below the slide frames 151 and 152, and the nichrome wire 190 provided with a terminal 197 made of a tension spring 194 and a phosphor bronze spring material on the insulating material 193. The styrofoam cutting device according to claim 1, further comprising an attachment portion 200. 4. The foamed polystyrene cutting device according to claim 1, wherein a table 160 is provided on the lower base portion 130 of the table 170, and a moving caster 162 is provided on the bottom of the table 160. 5.

Images