JPH03170350A - Method of filling heat-insulating sheet glass with sealant - Google Patents

Abstract

PURPOSE: To improve filling accuracy by detecting the amount of a sealing agent transferred through an injection nozzle, lowering the moving speed of the nozzle when supply ability is reduced and accelerating the moving speed of the nozzle when the supply ability is increased.

CONSTITUTION: The sealing agent stored in a storage tank 18 is transferred to the injection nozzle 4 by a flexible conductor 23 under the pressurization of a piston 22. The depth of the edge joint 26 of a heat insulating glass plate 1 is detected by a sensor 24, the movement of the piston 22 is detected by the sensor 25 and data are supported to the process computer 13 of a sealing equipment. Thus, the computer 13 generates a control command so as to operate a horizontal conveyor 21 for the movement of the heat insulating glass plate 1 in the direction of a bidirectional arrow 3 and the injection nozzle 4 in the direction of the bidirectional arrow 7 and further, controls the supply output of the sealing agent to the injection nozzle 4 by the conductor 23. The flow rate of the sealing agent from the storage tank 18 to the injection nozzle 4 can be elevated in the straight area of the edge joint 26 and reduced in the curved area of the edge joint 26.

COPYRIGHT: (C)1991,JPO

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an insulating glass plate.
The present invention relates to a method of sealing compounding, ie, filling an edge joint of an ass pane with a sealant. More specifically, a sealant is introduced into the edge joint from at least one injection nozzle that moves along the edge joint of the insulating glass pane, and the depth of the edge joint is detected, and if the edge joint is deep, the sealant is introduced into the edge joint. , relates to a method for filling a sealant for an insulating glass plate, in which the speed of movement of the injection nozzle along the edge joint is gradually lowered, while increasing the speed of movement when the edge joint is not very deep.

[Prior Art] In conventional sealing devices (filling devices), the amount of sealant transferred to the injection nozzle is controlled by the control of the transfer means (gear pump, press, transfer cylinder operated with a fluid medium) and/or
or adapted to the respective required amount of sealant by means of a valve. However, this is difficult because the inertia of the device after being switched makes it unfeasible for a short period of time. Moreover, due to the elasticity of the conduit between the transfer means (pump) and the injection nozzle, an increase in transfer is effective only with a delay, and conversely, when the transferred quantity is reduced, it is even longer after that. Over time, a great deal of sealant is expelled. Moreover, small switching cannot be adjusted accurately and quickly with the aid of partial valves.

DE 2 907 219 discloses a sealing method (filling method) in which the deceleration of the supply of sealant occurs in all cases simultaneously with the lowering of the movement of the insulating glass pane. In this DE 2907219, the flow of sealant through the injection nozzle and the relative velocity between the injection nozzle and the insulating glass plate are proportional to each other at the beginning of the movement. should increase continuously and decrease continuously at the end of the travel. DE 2 907 219 also refers to this adjustment problem, ie the need for a "delayed" activation of the pump drive mechanism.

East German Patent No. 158 788 and French Patent No. 256
No. 0 580 813 describes the size (depth) of the cross-section of the edge joint of an insulating glass plate by moving the injection nozzle.
Compensating for changes in is disclosed. That is, the supply capacity of the sealant through the injection nozzle is constant, and the speed of this injection nozzle is low in the deep area of the edge joint and high in the area of the less deep part of the edge joint. do. In East German Patent No. 158 766 and French Patent No. 2 560 560 813, the position or size of the protrusion of the sealant formed at the tip of the injection nozzle in the edge joint is determined as appropriate for the edge joint. For filling. It serves as a measure of the amount of sealant required per unit length of edge joint.

This mode of operation does not allow compensation of the required speed for relatively large changes in the depth of the edge joint. Furthermore, this method prerequisites that a protrusion of the sealant exists and that this protrusion is detectable. This condition does not apply, for example, at the beginning of the sealing phase. The disadvantages of the conventional method become immediately apparent from the existence of a "start-up" period of sealing at each corner (ie usually four) of the insulating glass pane. This is because it is clear that the filling of edge joints with sealants is particularly weak in the corner areas.

[Summary of the Invention] The present invention has been made in view of the above circumstances, and its purpose is to reduce the amount of sealant introduced into the edge joint in the sealant filling method of the type described above. , to be able to adjust to each required amount with simple and accurate adaptation and without time delay.

To achieve this object, the method of filling a sealant for an insulating glass plate according to the present invention includes: when filling an edge joint of an insulating glass plate with a sealant; introducing the sealant from an injection nozzle into the edge joint; detecting the depth of the edge joint, and if the edge joint is deep, determining the speed of movement of the injection nozzle along the edge joint; in the sealant filling method, in which the moving speed of the injection nozzle is increased if the edge joint is not very deep; detecting the amount of the agent and decreasing the moving speed of the injection nozzle when the supply capacity decreases, and increasing the moving speed of the injection nozzle when the supply capacity increases; It is characterized by:

In the method of the invention, the amount of sealant required on average is set depending on the adjustment of the transport means (eg gear pump, cylinder pump) and the valves. Furthermore, it remains essentially constant during the entire period of the sealing procedure. For this purpose, the width and (average) depth of the edge joint are measured. During the sealing process 9, the injection nozzle is moved along the joint of the edge joint by moving the insulating glass plate and/or the holder. Since the width of the edge joint does not change, the depth of the edge joint can be determined by mechanical or non-contact scanning (deep probe) auxiliary equipment to determine the cross-sectional area of the edge joint and hence the required amount of sealant. It is measured as a measurement for.

If the depth of the edge joint as measured by the non-contact scanning device changes, the relative velocity between the injection nozzle and the edge joint;
Thus, the amount of sealant introduced into the edge joint per unit length of the edge joint increases or decreases in response to changes in the depth of the edge joint.

This change in relative speed, in other words in the speed of movement of the injection nozzle along the edge joint, can be carried out quickly and without delay, even at relatively large proportions. In this connection, in the present invention, it is preferable to change the moving speed of the injection nozzle and/or the moving speed of the insulating glass plate.

The method according to the invention allows even in corner areas
This allows for sealing without any problems. And when sealing a non-rectangular insulating glass plate,
As experience has shown, between the glass plates of the insulating glass plate,
Often there is a hand-bent spacer frame.

Particularly large variations therefore occur in the depth of the edge joint.

Variations in the depth of the edge joint (the width of which is approximately constant) due to incorrect placement and/or hand-bent spacer frames 1, and which also occur in particular in the corner areas, are avoided by the method of the invention. The related sealing process can be quickly controlled. This is particularly effective when so-called "servo motors" with high starting forces are used for driving the nozzle holder and for driving the transport means for transporting the insulating glass.

In the method of the invention, the amount of sealant transferred per unit time through the injection nozzle is detected, the speed of movement of the injection nozzle along the edge joint is reduced with the reduced delivery capacity, and Increases with increased supply capacity. Adjustments for changes in the supply capacity of the encapsulant transfer means can therefore be made, for example, by transfer to the injection nozzle (11). ) is made possible by changes in For this reason, in the method according to the invention it is no longer necessary to take special measurements to keep the supply capacity of the sealant exactly constant. The change in relative velocity between the injection nozzle and the insulating glass plate has a superposition of the change in relative velocity due to the varying depth of the edge joint due to the change in the ability of the injection nozzle to deliver sealant. It is clear that this will be done. Thus, for example, if the delivery capacity of the sealant is increased, the increase in relative velocity can partially or completely eliminate the decrease in relative velocity in areas where the edge joint is deep. Therefore, the actual change between injection nozzle and edge joint is
Corresponds to the sum of two changes in relative velocity.

The invention furthermore relates to a method for filling edge joints of insulating glass panes with an irregularly shaped outer contour with a sealant.

In this method, geometric data of the outer contour (or part thereof) of the insulating glass pane are present in stored form.

12 Equipment for automatic filling of edge joints of insulating glass plates is, for example:
U.S. Patent No. 2 275 811, West German Patent Publication (
DOS) No. 2 834 902, West German Patent Publication (
DOS) No. 2 845 475 (British Patent No. 201
8 960), West German Patent No. 2 816 437, and West German Patent Application (DAS) No. 2 848 78
It is known from No. 5.

However, such installations are only capable of filling edge joints of insulating glass panes with a straight profile.

The control of the sealing station based on stored data of the insulating glass panes is described in European Patent Application (EPA) No. 252066.
It is known from No. European Patent Application No. 252 086 discloses a specific method for controlling the amount of sealant introduced by a data carrier attached to the insulating glass plate, as well as for controlling the movement of the injection nozzles and the insulating glass plate. Including disclosures.

However, the capacity of these data carriers is limited since they can contain only a limited number of actually requested data. The concept of varying the speed of movement of the injection nozzle along the edge joint of an insulating glass plate is described in the above-mentioned European Patent Application No. 2521.
It is not disclosed in No. 3066.

The invention is based on the additional object of enabling automatic filling of edge joints of insulating glass panes with irregularly shaped outer contours.

According to the invention, this object is achieved subject to adjustment of the movement of at least one injection nozzle and/or of the insulating glass plate on the basis of their geometrical data. Furthermore,
The injection nozzle is swung around an axis of rotation perpendicular to the insulating glass plate so that it always faces the contoured edge of the insulating glass plate. This method can be particularly effectively combined with the method described in any one of claims 1 to 3 of the present application. This not only makes it possible to fill insulating glass panes with irregularly shaped outer contours, but also ensures edge filling of edge joints with sealant in all cases. This is of considerable practical importance because of the aforementioned problems with the homemade spacer frame connections often used with such insulating glass panes.

In order to adapt the relative speed between the injection nozzle 14 and the insulating glass plate for each component part of the outer contour,
The step according to an advantageous embodiment of the invention consists in varying the speed of movement of the insulating glass pane in the horizontal direction. Furthermore, it belongs to the variation of the speed of movement of the injection nozzle perpendicular to the direction of movement of the insulating glass plate.

The rotation of the injection nozzle about an axis of rotation perpendicular to the plane of the insulating glass plate is preferably guided by a stepping motor. Thereby, during the movement of the sealing element along the contour edge, the desired opposite angle of the injection nozzle relative to this contour edge is maintained in all cases.

According to the invention, the movement of the sealing member and/or the insulating glass pane is controlled by a process computer on the basis of stored geometrical data.

This is particularly advantageous for execution control based on geometric data assisted by a process computer of the glass cutting table. This is because in this case the already existing data can be further utilized.

It is also possible to provide a measuring head 15 (for example an optical scanning head) for determining the geometrical data. This measuring head moves along the outer contour of the insulating glass pane and also transmits the measured data based on the coordinate system to the process computer, where this data is stored. In this way, it is likewise possible for contours that are not precisely defined mathematically or geometrically to be detected and used for control purposes.

Another possibility for a contour shape that is defined mathematically or geometrically and is not yet stored belongs to the introduction of the geometric data into the process computer by manual input.

In the method of the invention it is also possible to assign a code to the geometrical data of an irregularly shaped insulating glass pane and to store and retrieve the data again according to this code.

In an advantageous embodiment of the method according to the invention, the steps can be as follows. That is, the speed of movement of the injection nozzle along the edge joint of the insulating glass pane should be increased in the area of the straight part of the edge joint and/or slightly curved than in the area of the corner part of the edge joint and/or the significantly curved part. The amount of sealant transferred per unit time through the injection nozzle is faster in the region of the part than when the relative velocity between the injection nozzle and the insulating glass plate is lower than when the relative velocity is lower. increase in

In this variant, it is realized that the straight part of the edge joint and the only slightly curved part can be sealed with a high relative speed between the injection nozzle and the insulating glass plate. In other words, it can be sealed more quickly than a corner part or portion of an edge joint with a small radius of curvature. This modification can be effectively combined with the method according to any one of claims 1 to 3 of the present application. Therefore, the change in relative velocity according to claims 1 to 3 of the present application is based on either the absolute transfer output of high or low, or the relative velocity of either high or low.

In order to further clarify the features and advantages of the present invention, embodiments of the present invention will be described below with reference to the accompanying drawings.

17 [Example] In FIGS. 1 and 2, an insulating glass plate 1 having an arcuate outer contour 2 along its circumferential surface is movable on a horizontal conveyor 21 in the direction of a double-headed arrow 3. Move with speed. Here, the conveyor 21 is a West German patent publication (DT-
OS) No. 8 038 425. In this arrangement, the speed of the insulating glass pane 1 is slower when the injection nozzle 4 is located at the location 5 of the outer contour 2 of the insulating glass pane 1 than when the injection nozzle 4 is located at the location 6 of the outer contour 2. .

The speed of the injection nozzle 4 similarly changes in the direction of the double arrow 7 (perpendicular to the direction of movement of the insulating glass plate 1). In this case, the speed of the injection nozzle 4 decreases during the movement of the outer contour 2 from the region 5 to the region 6.

During this movement, a rotation of the injection nozzle 4 occurs about the axis 8 in the direction of the double arrow 9. Here, the axis 8 is perpendicular to the plane of the insulating glass plate 1. Due to the above-mentioned pivoting movement of the injection nozzle 4 carried out by the motor 11 (preferably a stepper motor 18 or a hydraulic motor), the outer contour 2 of the insulating glass pane 1
The correct orientation of the nozzle opening 10 of the injection nozzle 4 relative to the injection nozzle 4 is always maintained.

However, if necessary in special cases, during the operation period of the injection nozzle 4,
It is also possible to vary the orientation of the nozzle orifice 10 as a function of profile geometry and relative velocity.

In addition to the movement control of the insulating glass plate 1 and the injection nozzle 4, the control of the amount of sealant 12 introduced per unit time into the edge joint by the injection nozzle 4 is based on the outer contour 2 stored in the process computer 13. It is done based on geometric data.

FIG. 3 shows a schematic diagram of the flow of geometrical data of the insulating glass sheet 1 from the process computer 14 controlling the glass cutting table 15 to the process computer 13 of the sealing installation.

FIG. 4 shows a schematic diagram of the measurement table 16 with the insulating glass plate 1. The outer ring 19 of the insulating glass plate 1 is scanned by the optical scanning head 17. The measurement data thus obtained is transferred to one process computer, and from there the process computer 1 of the sealing equipment
Transferred to 3.

In the embodiment finally shown in FIG.
The geometrical data of the outer contour 2 are manually entered into the computer 20 and from there transferred to the process computer 13 of the sealing installation.

The structure of the equipment for carrying out the method of the invention is not limited to one injection nozzle 4.

More specifically, it involves the simultaneous operation of two or more injection nozzles 4 at different locations along the edge joint of the insulating glass pane 1. Alternatively, simultaneous injection of edge joints of a number of insulating glass panes by means of side-by-side injection nozzles is also possible, provided that multiple nozzles are not used.

According to the method of the invention, an insulating glass pane 1 having at least one straight edge can be sealed using a horizontal conveyor, for example the conveyor installation known from German Patent No. 3 038 425.

20 The movement of the insulating glass pane 1 in the case of sealing the insulating glass pane 1 without straight edges can be achieved by a transfer device that engages the glass 1 from the side, for example with a suction cup.

Although sealing installations with several injection nozzles can be used to carry out the method according to the invention, installations with one injection nozzle are usually preferred. The reason is as follows. The relative velocity between the lower horizontal (straight) edge of the insulating glass plate and the injection nozzle changes as another injection nozzle moves along the portion of the edge joint that projects upwardly from the horizontal conveyor. Furthermore, the profile found at the site where the strike direction of movement of the insulating glass pane is to be reversed adjusts the amount of sealant to be ejected from the injection nozzle associated with the bottom edge of the insulating glass pane. Considerable expense is required to provide the means.

FIG. 6 is a diagram used to explain the control of the equipment for filling the edge joint of the insulating glass plate (sealing equipment). In this figure, the injection nozzle 21 , the nozzle 4 , and the storage tank 18 for the sealant are shown simply via a horizontal conveyor constituted by a transfer roller 21 . In this installation, the sealant is contained in a storage tank 18 and is transferred under pressure by a piston 22 to the injection nozzle 4 via a flexible conduit 23 by a pump (not shown).

The sensor 24 detects the depth of the edge joint 26 of the insulating glass pane 1 to be filled. The other sensor 25 is the piston 22
Since the movement of the sealant is detected, each supply rate of the sealant to the injection nozzle 4 is detected. The data acquired by the sensors 24,25 are provided to the process computer 13 of the sealing installation.

This process computer 13 includes a horizontal conveyor 21 for the movement of the insulating glass pane 1 in the direction of the double arrow 3;
and issuing a control command to the drive mechanism for actuating the injection nozzle 4 in the direction of the double arrow 7. Furthermore, the process computer 13 controls the supply output of sealant to the injection nozzle 4 via the conduit 23.

Changes in the relative velocity between the injection nozzle 4 and the insulating glass plate 1 depending on the depth of the edge joint 26 are detected by a sensor 24, and changes depending on the feed rate are measured by a sensor 25. Ru. The amount of sealant introduced into the edge joint 26 per unit length thereof is adjusted such that the edge joint is always filled with sealant to a predetermined limit (usually corresponding to the edge of the edge joint).

The flow rate of the sealant from the storage tank 18 to the supply nozzle 4 is determined by the linear region of the edge joint 26 (for example, in FIG. 1, the region 6 of high relative velocity between the injection nozzle 4 and the insulating glass plate 1). It can be raised in the curved region of the edge joint 26 (for example in the region 5 of low relative velocity in FIG. 1). Even when the supply capacity is intentionally varied, the method according to the invention as described above ensures always accurate filling of the edge joint 26 of the insulating glass pane 1, even if the depth of the edge joint 26 varies. .

According to the sealing process of the present invention, the sealing operation can be carried out not only on insulating glass plates transported in a horizontal position, but also on insulating glass sheets transported in an approximately vertical position. In this case, the latter example is preferable.

23 The sensor 25 in the arrangement shown in FIG. 6 can also be coupled to a measuring cylinder. This measuring cylinder is not shown in FIG. 6, but is normally associated with the injection nozzle 4. In this embodiment, the ability to supply the sealant to the injection nozzle 4 is detected by the sensor 25 by detecting the movement of the measuring piston in the measuring cylinder in the vicinity of the injection nozzle 4 . Therefore, further improvement in control accuracy is achieved. This is because any loss of sealant that may occur during the transfer from the storage tank to the measuring cylinder ends up being of no consequence.

In the embodiment of the sealing installation shown in FIG.
5 is designed as a flow meter and is connected directly to the injection nozzle 4. The sensor 25 in this arrangement directly detects the value of the amount of sealant actually introduced into the edge joint by the injection nozzle 4.

In other respects, the sealing installation shown in this FIG. 7 is operated in the same manner as described above in connection with FIG.

[Brief explanation of the drawing]

24 FIG. 1 is a perspective view schematically showing the equipment for achieving the method according to the present invention, FIG. 2 is a partially enlarged view of the previous figure showing details of the equipment in the previous figure, and FIGS. Fig. 5 is a block diagram schematically showing the flow of geometric data of the insulating glass plate, Fig. 6 is a block diagram for explaining the control of the sealing equipment, and Fig. 7 is a block diagram of the sealing equipment. FIG. 7 is a block diagram for explaining another example of control. DESCRIPTION OF SYMBOLS 1...Insulating glass plate, 2...Outer contour, 4...Injection nozzle, 5...Curved portion of edge joint, 6...・Straight portion of edge joint, 11・
...Motor, 13,19.20...Process computer, 14...Process computer for glass cutting table, 15...Glass cutting table

Claims (1)

[Claims] 1. When filling an edge joint of an insulating glass plate with a sealant, the sealant is introduced into the edge joint from at least one injection nozzle that moves along the edge joint. and detecting the depth of the edge joint and reducing the speed of movement of the injection nozzle along the edge joint if the edge joint is deep, while reducing the speed of movement of the injection nozzle along the edge joint if the edge joint is not very deep. In the sealant filling method for increasing the moving speed of the injection nozzle, the amount of the sealant transferred per unit time through the injection nozzle is detected, and if the supply capacity decreases,
A method for filling a sealant for a heat insulating glass plate, characterized in that the moving speed of the injection nozzle is decreased, and when the supply capacity increases, the moving speed of the injection nozzle is increased. 2. The sealant filling method for an insulating glass plate according to claim 1, wherein the moving speed of the injection nozzle and/or the moving speed of the insulating glass plate are variable. 3. The heat insulation according to claim 1, wherein the amount of the sealant transferred per unit time through the injection nozzle is detected by a metering device disposed directly on the injection nozzle. Sealant filling method for glass plates. 4. If the insulating glass plate has an irregularly shaped outer contour and the geometric data of this outer contour or a part thereof exists in a memorized state, movement control of at least one of the injection nozzles; /or movement control of the insulating glass plate is carried out based on the geometrical data and the injection nozzle moves the contour of the insulating glass plate around an axis of rotation perpendicular to the insulating glass plate; 2. The method of filling a sealant for an insulating glass plate according to claim 1, wherein the sealing agent is swung so as to always face the edge. 5. The method of filling a sealant for an insulating glass plate according to claim 4, wherein the moving speed of the insulating glass plate in the horizontal direction is variable. 6. The sealant filling method for an insulating glass plate according to claim 4, wherein the speed of movement of the injection nozzle perpendicular to the moving direction of the insulating glass plate is variable. 7. The method of filling a sealant for a heat insulating glass plate according to claim 4, wherein the swinging of the injection nozzle is performed by a stepping motor. 8. The insulating glass plate according to claim 4, characterized in that movement control of the injection nozzle and/or movement control of the insulating glass plate is performed by a process computer based on the stored geometric data. Sealant filling method for. 9. The method of filling a sealant for an insulating glass plate according to claim 8, characterized in that the movement control is performed based on the geometric data provided by a process computer of the glass cutting table. . 10. A measuring head such as an optical scanning head is provided, the head moves along the outer contour of the insulating glass plate, and the geometrical data measured based on a coordinate system,
9. The method of filling a sealant for an insulating glass plate according to claim 8, further comprising transmitting this data to the process computer where it is stored. 11. The method of filling a sealant for an insulating glass plate according to claim 10, wherein the geometrical data is provided to the process computer by manual input. 12. A code is assigned to the data of the insulating glass plate formed into an irregular shape, and the data is stored according to the code and can be searched again. Method for filling sealant for insulating glass plates. 13. The speed of movement of the injection nozzle along the edge joint of the insulating glass plate is controlled at a corner portion of the edge joint and/or
or the amount of said sealant transferred per unit time through said injection nozzle faster in the area of straight and/or slightly curved parts of said edge joint than in the area of significantly curved parts. , than in the case where the relative velocity between the injection nozzle and the insulating glass plate is lower,
5. The method of filling a sealant for a heat insulating glass plate according to claim 4, wherein the relative speed increases when the relative speed is high.