JPS5853583B2 - Multilayer plate spacer forming device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a spacer forming apparatus for sealing a multilayer board in which two boards are overlapped and the peripheral portion is sealed.

Multi-layered glass panels using two glass panels are widely used for heat insulation and soundproofing purposes. After forming a spacer made of thermoplastic resin such as butyl rubber into a string shape along the glass plate, the other glass plate is placed on top of this glass plate and the two are bonded together.

An object of the present invention is to propose a molding device that automatically forms the above-mentioned spacers along the periphery of a multilayer board.

Embodiments of the present invention will be described below with reference to the drawings.

In FIG. 1, 1 is a mounting table, 2 is a glass plate placed horizontally at a predetermined position on the mounting table, and 3 is a thermoplastic resin injection head provided so as to be movable in parallel above the glass plate 2.

A vertical barrel 4 constituting the head 3 is rotatably supported on a support base 5 by bearings 6 and 7, and the barrel 4 (/l:
A gear 8 is fixed, and a gear 9 meshing with the gear 8 is rotated by a servo motor 10 attached to a support base 5 to change the rotation angle position of the head 3.

The barrel 4 has a hole 11 that is concentric with the hole and is open at the top, and a nozzle 12 that communicates with the lower part of the hole 11. A screw is inserted into the hole 11 and is rotated by a servo motor 13 fixed to the barrel 4 via a reducer 14. A shaft 15 is provided, and several rod-shaped heaters 16 and thermocouples 1 are provided on the outer thick part of the hole 11.
7 will be buried.

A bobbin 20 wrapped with a strip of butyl rubber 19 is hung on a bracket 18 protruding from the barrel 4, and the butyl rubber 19 is inserted into the hole 2.
When the butyl rubber 19 is supplied into the hole 11 from 1, the butyl rubber 19 is heated and melted by the heater 16.

It is extruded from the nozzle 12 by the screw shaft 15 into a rectangular cross-section.

The melting temperature of the butyl rubber 19 is kept constant by a temperature control device (not shown) which inputs a temperature signal from the thermocouple 17.

A bracket 28 protruding from the support base 5 is screwed into and supported by a screw shaft 23 supported on the movable base 22, and the screw shaft 23 is attached to the movable base 2.
The height of the head 3 is adjusted by rotating it with a servo motor 24 attached to the head 2.

The moving table 22 is moved horizontally by an X-Y drive mechanism (not shown), and the nozzle 12 is moved along the periphery of the glass plate 20.

This movement control is performed by controlling the drive motors of the X and Y axes according to a predetermined program for the shape and shape of the glass plate placed in a fixed position.

At the same time, the head 3 is rotationally controlled by the servomotor 10 so that the front surface of the nozzle 12 in the traveling direction always faces the traveling direction of the head 3.

For this rotation control, the angle of the vector composite signal is determined from the speed signals of the drive motors of the X and Y axes of the X and Y drive mechanism, and a rotation signal corresponding to the angle is manually applied to the servo motor 10 to Rotate.

On the other hand, the amount of rotation of the servo motor 4100 is taken out as a number of pulses from a rotation pulse generator, and when the number of pulses reaches a predetermined target number of pulses with respect to the rotation signal, the servo motor 10 is stopped.

As a result, the butyl rubber 19 injected from the nozzle 12 forms a spacer 25 having a uniform rectangular cross section along the periphery of the glass plate 20.

However, since it is difficult to bend and form the spacer 25 into a square shape at the corner of the glass plate 20, the program is set so that the nozzle 12 moves at a low speed in a small-diameter arc at the corner. I'll keep it.

The speed of the servo motor 13 is controlled by a rotation signal according to the vector composite signal, and as a result, the nozzle 12
When the moving speed of the spacer 25 increases, the amount of butyl rubber ejected from the nozzle 12 increases, and the amount of ejected at the corners decreases, so that the cross section of the spacer 25 is always kept uniform.

Note that a glass position sensing sensor (
(not shown) to detect the peripheral edge of the glass plate 20, the X-Y drive system may be made into a closed loop system.

As a method of supplying thermoplastic resin into the head 3, as shown in FIG. 2, a hopper 26 is attached to the upper part of the barrel 4,
Powdered or granular resin may be supplied from this, or a pair of grooved rollers may be forcibly fed into the front part of the hole 21 to rotate while sandwiching the band-shaped butyl rubber 19.

Further, depending on the injection state of the thermoplastic resin, a bent nozzle 27 with an injection port protruding in the traveling direction may be used instead of the straight nozzle 120, as shown in FIG.

The present invention has the above configuration, and automatically forms spacers with a uniform cross section by injecting thermoplastic synthetic resin from the nozzle while moving the nozzle forming the spacer at a controlled speed along the periphery of one of the composite plates. There is an effect that can be formed.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional front view of one embodiment of the present invention, Fig. 2 is a partial longitudinal sectional front view of another embodiment of the thermoplastic resin injection head, and Fig. 3 is another embodiment of the nozzle of the thermoplastic resin injection head. It is a vertical front view of an example. 2... flat plate, 3... thermoplastic resin injection head, 5...
... Support stand, 7, 8, 10 ... Servo drive device, 12
゜27... Nozzle, 13, 14, 15... Injection means, 16゜17... Resin heating melting child.

Claims (1)

[Claims] 1 A thermoplastic resin injection head rotatable around an axis perpendicular to the plane and a thermoplastic resin injection head are mounted on a support base that is movable in a plane parallel to the flat plate forming the multilayer plate. A thermoplastic resin injection head is provided with a resin heating bath contacting means and an injection means for injecting the molten resin from a nozzle onto the flat plate, and the speed of the support is By operating the servo drive device in accordance with the magnitude of the direction signal, the direction and attitude of the nozzle movement relative to the flat plate is made to match the movement direction of the support stand, and the injection amount of the thermoplastic resin injection head is adjusted to the movement speed of the support stand. A spacer forming device for a multilayer board, characterized in that the spacer is formed in proportion to the spacer.