JPS6017309Y2 - Thermoplastic plate bending equipment - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to an apparatus for bending and forming thermoplastic plates.

More specifically, the mounting table for the thermoplastic plate is configured with a fixed plate and a movable plate that is rotatable relative to the fixed plate, and the fixed plate and the movable plate are arranged in parallel, The present invention relates to a bending and forming apparatus for a thermoplastic plate, which is provided with an electric heating means such as a heater, and is capable of bending while heating the thermoplastic plate set on a mounting table.

As a bending and forming device for thermoplastic plates, a slit is provided on the table on which the thermoplastic plate is placed, and a heating means arranged in correspondence with the slit heats the part of the plate facing the slit, thereby bending the thermoplastic plate. It is known that a thermoplastic plate body is bent and formed while one end of the body is lifted from a mounting table.

According to this, since the mounting table for the thermoplastic plate was fixed, it could only be bent upward, that is, in one direction.

In addition, since the bending angle had to be determined by visual measurement during bending, it was not possible to bend at an accurate angle.

Furthermore, since the mounting table is fixed and the thermoplastic plate itself must be lifted and bent against its own weight, bending cannot be easily performed, and if the thermoplastic plate becomes large enough, bending cannot be performed. There have been problems in that it is difficult to obtain a good bent surface.

Japanese Utility Model Application Publication No. 7556/1983 is known, but it employs a complicated mechanism such as a clamp mechanism, has a large number of parts, has a complicated structure, and cannot provide an inexpensive device.

The present invention is an improvement of the present invention in view of the above-mentioned problems.

The object of the present invention is to construct a mounting table for a thermoplastic plate body with a fixed plate and a movable plate that is rotatable with respect to the fixed plate, and to set a space between the fixed plate and the movable plate. They are arranged parallel to each other, and a heating means such as a heater is arranged at this interval, so that the thermoplastic plate can be bent and formed while being heated by this heating means. Provided is a thermoplastic plate bending device capable of bending a plastic plate.

The purpose of the present invention is to enable the thermoplastic plate to be bent vertically while being set on the mounting table.
In addition, an angle scale is attached to the fixed plate side, and an indicator indicating this scale is attached to the movable plate side, so that the rotation angle of the movable plate relative to the fixed plate can be obtained, and a thermoplastic plate body is planned. To provide a bending and forming device for a thermoplastic plate, which can accurately bend a thermoplastic plate to an angle.

Furthermore, the purpose of the present invention is to attach lines that serve as rulers in parallel vertically and horizontally on the surface of the mounting table, and use these lines to arbitrarily set the bending width of the thermoplastic plate. To provide an apparatus for bending and forming a thermoplastic plate body.

A preferred embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

FIG. 1 is a perspective view of a thermoplastic plate bending apparatus according to the present invention, with one bolt removed for convenience of explanation, and FIG. 2 is a longitudinal side view.

The apparatus 1 consists of a box 2, a mounting table 3 provided on the top of the box 2, and a heating means 6.

The mounting table 3 consists of a fixed plate 4 and a movable plate 5 provided parallel to the fixed plate 4 with an interval therebetween, and a heating means 6 is provided along the gap between the movable plate 5 and the fixed plate 4.

The box body 2 is formed in a hollow shape, and a recess 7 is formed in the center of the upper surface of the box body 2 in the length direction.

One side of the upper surface is horizontal and the other side is inclined downward with this recess 7 as a boundary, so that the movable plate 5 can be rotated downward on this side.

As shown in FIG. 3, heating means 6 such as a heater is accommodated in this recess 7, and both ends thereof are supported by brackets 8, 8.

This heating means 6 is connected to the box body 2 by a lead wire (not shown).
It is connected to a power switch 9 provided on the front surface of the recess 7, an indicator lamp 10, and a safety device 11 incorporated therein, so that heat is radiated above the opening of the recess 7 when the power switch 9 is turned on.

The safety device 11 is equipped with a temperature fuse and a thermostat, and when the heating means 6 reaches a predetermined temperature, the thermostat is activated so that the heating means 6 can be maintained at a predetermined temperature.

Although only one end side is shown in FIG. 3, both side walls 2 of the box body 2
A support plate 12.12 of a fixed plate is integrally attached to a and 2a.

The support plate 12 is fixed to the outside of the side wall 2a at the base 12a,
It has a support portion 12b extending horizontally from this base portion 12a.

The base 12a consists of a protrusion that protrudes upward and a bulge that bulges downward. The center of the protrusion has a screw hole 13, and one of the bulges has an angle with the screw hole 13 as the center. The scale group 14 is arranged in an arc shape in units of angle, for example.

The fixing plate 4 is placed on the upper surface of the support part 12b, and is horizontally attached integrally therewith.

On the surface of the fixing plate 4, there are vertical lines 4a... as shown in FIG.
...and a plurality of horizontal lines 4b are attached in parallel at intervals of, for example, 1 cm.

Vertical lines 4a... are attached at intervals of 1cIrL using the center line in the width direction of the recess 7 as a base line, and in the figure, the recess 7 of the movable plate 5
The inner end facing the plane is shown as being located 1 crn from the baseline.

This base line is set so as to substantially coincide with the center of the bent portion when a plastic plate is placed on the mounting table 3 and heated by the heating means 6 to be bent as will be described later.

Place the support plate 16 of the movable plate 5 from the outside of the support plate 12, and insert the bolts 17 into these 12 and 16.
Attach the support plate 16 to the holder with bolts 17.

The support plate 16 includes a base portion 16a and a support portion 16b extending horizontally from the base portion 16a.

A protrusion is formed on the base 16a, similar to the support plate 12, and an insertion hole 18, which is slightly larger than the screw hole 13, is formed in the center of the protrusion.

The bolt 17 is inserted into the screw hole 1 of the support plate 12 through the insertion hole 18.
3.

As a result, if the bolt 17 is tightened, the support plate 1 of the movable plate 5
6 is prevented from rotating, and when the bolt 17 is loosened, the support plate 16 becomes rotatable relative to the support plate 12.

The lower end of the base 16a of the support plate 16 is formed into an arc shape corresponding to the arc-shaped scale group 14 of the support plate 12, and angle indicators 19, 20 are attached to the outer periphery of the arc shape.

This indicator 19°20 is located at the support plate 16 with respect to the support plate 12.
The scales 14 at both ends of the scale group 14 are horizontal.
a.

14b.

With this, for example, when the support plate 16 rotates counterclockwise, the rotation angle of the support plate 16 can be known from the scale indicated by the indicator 19, and when the support plate 16 rotates in the counterclockwise direction. In this case, the rotation angle can be similarly obtained from the indicated scale of the other indicator 20.

The head of the bolt 17 is made of synthetic resin or the like to have a large diameter, and a plurality of depressions are formed on the outer periphery of the bolt 17 so that the bolt 17 can be easily threaded.

A movable plate 5 is integrally fixed on the upper surface of the pair of support plates 16 in the same manner as the fixed plate 4.

The movable plate 5 is provided parallel to the fixed plate 4 and spaced apart so as to occupy the same horizontal plane.

As a result, the movable plate 5 can freely rotate up and down with respect to the fixed plate 3 since the rotary plate 16 is rotatable.

The surface of this movable plate 5 is also 1CM similar to the surface of the fixed plate 4.
Vertical line 5a... and horizontal line 5b... at intervals
are attached parallel to each other.

In addition, 21 in the drawing is a thermoplastic plastic plate.

Next, the bending and forming of the plastic plate 21 will be described.

After loosening both bolts 17, the movable plate 5 is maintained in a horizontal state with respect to the fixed plate 4, and the bolts 17 are tightened to hold the mounting table 3 made up of these 4 and 5 in a horizontal state.

To make the movable plate 5 horizontal with respect to the fixed plate 4, use the indicator 1
9.20 and the scales 14at and 14b at both ends of the scale group 14
It would be better if they match.

In this state, the plastic plate 21 is set on the mounting table 3.

For example, when the plastic plate 21 is to be bent clockwise by 20 degrees, the bolt 17 is first loosened and the movable plate 5 is rotated downward.

The indicator 20 is 20 with the scale 14b of the scale group 14 as the base line.
The movable plate 5 is rotated until it matches the second scale corresponding to degrees.

After that, tighten the bolts 17 and move the movable plate 5 against the fixed plate 4.
Hold the forceps at a 20 degree angle.

Then, the power switch 9 is turned on, and the portion of the plastic plate 21 facing the recess 7 is heated by the heating means 6.

As a result, this part softens, and since the movable plate 5 has been previously rotated downward by 20 degrees, the part of the plastic plate 21 located above the movable plate 5 with this softened part as a boundary becomes soft. It descends due to its own weight and is supported on the surface of the movable plate 5.

As a result, the portion of the plastic plate 21 on the movable plate 5 side is bent by 20 degrees in the direction of the forceps relative to the portion on the fixed plate 4 side, and the plastic plate 21 can be accurately bent by 20 degrees as intended.

In this case, in the above case, the bending is performed by its own weight, but it is of course possible to apply a pressing force from above the plastic plate 21 to bend it, and furthermore, the movable plate 5 and the plastic plate 21 may be lowered at the same time. Alternatively, bending may be performed.

Next, as a case of upward bending, a case of upward bending at an angle of 30 degrees will be described.

The mounting table 3 is made horizontal in the same manner as described above, the plastic plate 21 is placed thereon, and the plastic plate 21 is heated in the same manner as described above.

When the heated portion of the plastic plate 21 softens, the poles 17, 17 are loosened and the movable plate 5 is gradually rotated upward relative to the fixed plate 4 until it forms an angle of 30 degrees.

As a result, the movable plate 5 side of the plastic plate 21 comes into contact with the movable plate 5 and is lifted up by the movable plate 5, thereby being bent upward by 30 degrees.

In order to set the angle to 30 degrees, it is sufficient to rotate the movable plate 5 upward using the scale 14a of the scale group 14 as the base line until the indicator 19 indicates this scale 14a or the 43rd scale.
This allows the plastic plate 21 to be accurately bent by 30 degrees in the direction of the hook.

7 Vertical and horizontal lines 4 marked on the surfaces of the fixed plate 4 and movable plate 5
a*4b..., 5a, 5b...
By using this, the plastic plate 21 can be bent to a desired width.

This will be described assuming that the right end of the plastic plate 21 in FIG. 2 is bent, for example, by 3 crrL.

3C771 from the right end of the plastic plate 21 to the second vertical line 5a from the inner end of the movable plate 5, that is, from the base line that approximately coincides with the bent part.
Coincide with the vertical line corresponding to the eye, and heat the heating means 6 in the same manner as above.
bend it upward or downward using the

This allows the right side of the plastic plate 21 to be bent to a width of 3 cm.

In the above explanation, the mounting table 3 and the heating means are supported by the box 2, but instead of the box 2, they are supported by two pillars, and the downward rotation angle of the movable plate 5 is reduced. It may be possible to set it even larger.

Furthermore, in the above, the plastic plate 21 is placed on the mounting table 3.
Although the entire surface of the plastic plate 21 facing the recess 7 is heated by the heating means 6, for example, a slit plate having a narrow slit is disposed between the heating means 6 and the mounting table 3, and the heating means 6 may heat the plastic plate 21 only through the narrow slit.

In this way, the heated portion can be made narrower than the above, and the bent portion can be made more angular.

As is clear from the above explanation, according to the present invention, the mounting table for the thermoplastic plate is formed of a fixing plate and a fixing plate that is rotatable with respect to the fixing plate. The bending angle can be accurately bent at the intended angle using the scale.

Further, according to the present invention, since the ruler line is attached to the surface of the mounting table, the bending width of the thermoplastic plate can be easily set to the desired bending width, and the bending width of the thermoplastic plate can be easily set to the desired bending width. can be done.

Furthermore, according to the present invention, as mentioned above, the bending device is made up of extremely few parts such as the fixed plate, the movable plate, and the heating means, and even though the structure is simplified, the above-mentioned upper and lower It has great practicality, such as being able to perform bending in the correct direction, accurate bending angle, and accurate bending width with simple operations.

[Brief explanation of drawings]

The drawings show a preferred embodiment of the present invention, and FIG. 1 is an overall perspective view of a bending device 1 according to the present invention, with one bolt removed for convenience of explanation, and FIG. 2 is a longitudinal sectional view. , FIG. 3 is an enlarged sectional view showing how the support plate is attached. In the drawing, 3 is a mounting table, 4 is a fixed plate, 5 is a movable plate, and 6 is a heating means.

Claims (1)

[Scope of utility model registration request] A fixed plate, which serves as a mounting base for the thermoplastic plate, is fixed horizontally between both end side walls of the box body, and a movable plate, which is arranged parallel to this fixed plate with a gap, is moved vertically with respect to the fixed plate. The box body is supported so as to be rotatable, and the upper surface of the box body has a recess facing the gap between the fixed plate and the movable plate. 1. An apparatus for bending and forming a thermoplastic plate, characterized in that an angle scale and an indicator are attached to the movable plate so that the angle can be adjusted by the scale of the movable plate.