JPH0353744Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention is applicable to plate-shaped objects having a non-circular and curved surface, such as the front or rear window glass of a car.
The adhesive applicator of the present invention is capable of automatically applying an adhesive along the edge of a plate-like member to which an adhesive is applied.More specifically, the adhesive applicator of the present invention is connected to a fluid pressure source. a cylinder that is slidably disposed within the cylinder and divides the cylinder into two chambers, one end of which is attached to the piston and the other end of which is disposed through one of the chambers of the cylinder; A rod that is smoothly guided in reciprocating motion, and an adhesive that is rotatably attached to a block fixed to the other end of the rod, is connected to an adhesive supply source, and applies adhesive to the peripheral edge of the window glass. and a tracing head provided with a discharge port, and is characterized in that the piston is provided with communication means for communicating the two chambers.

When using a manufacturing method that requires assembling certain parts within a limited unit time, such as various operations on an automobile assembly line, it is easy to assemble small parts, but it is difficult to assemble large parts. In particular, if the parts are to be assembled using an adhesive, accurate assembly must be completed within the unit time, including the time for applying the adhesive.

Examples of the large parts include front window glass and rear window glass, which are difficult to handle and easily break.

2. Description of the Related Art Conventionally, in an automobile assembly line, there is an adhesive application apparatus A, which is partially shown in cross section in FIG. 1, as an apparatus for applying adhesive along the edges of a front windshield and a rear window glass.

The device has a piston 2 movably supported in the axial direction in a cylinder 1 for hand-held use, and a head 4 is attached to the outer end of a rod 3, which has a piston 2 fixed to the inner end. An adhesive discharge port 6 for discharging adhesive toward a portion along an edge 5A of the glass 5 is opened. Piston 2
An O-ring 7 as a sealing member that is in close contact with the inner circumferential surface of the cylinder 1 is assembled on the outer circumferential surface. Also,
The outer peripheral surface of the rod 3 is in close contact with an O-ring 8 serving as a sealing member provided on the inner periphery of the mouth of the cylinder 1. The tracing head 4 is kept in contact with the edge 5A of the window glass 5 mounted and fixed on the turntable 9 by air pressure applied to the back side of the piston 2, and this air pressure is supplied from the port 10. be done.

The profiling head 4 that is in contact with the edge 5A of the window glass 5 on the turntable 9 always touches the edge 5A based on the fact that the effective pressure receiving area on the opposite side, that is, on the back side, is larger than the effective pressure receiving area on the rod side. They are in pressure contact with each other, and when they change from being in contact with the edge 5A close to the center of rotation of the turntable 9 to being in contact with the edge further away, they are pushed back by the window glass. This pushback is caused by the relief valve 1 which releases pressure above a predetermined pressure into the pipe 12 connecting the port 10 and the compressed air source 11 (for example, a compressor).
3 is provided, and the piping 12 rises when the piston 2 is returned by being pushed by the window glass 5.
This is possible by lowering the pressure inside.
In FIG. 1, the reference numeral 14 indicates a pressure gauge, and the reference numeral 15 indicates an adhesive supply source.

In a conventional device with such a structure and operation, the piston 2 and the rod 3 create a large frictional resistance with the cylinder 1 due to the O-rings 7 and 8 as sealing members, which slows down the operation and prevents adhesion. Material application time cannot be shortened. If the speed of the turntable 9 is increased forcibly, the windshield 5
will break.

On the other hand, in automobile assembly lines, the unit time for assembling parts tends to be shorter than at present, and we have reached a stage where loose adhesive application is no longer acceptable.

Based on the above viewpoint, an object of the present invention is to provide an adhesive applicator that enables high-speed adhesive application, and which reduces the resistance applied to the profiling head that deviates integrally with the adhesive discharge port. This device significantly reduces the contact resistance of the piston and rod to the cylinder, and by mutual communication between the two chambers in the cylinder with the piston in between, and improves the ability to follow the adhesive to the plate-shaped member. .

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 2 shows a front view of an embodiment of the device of the present invention, and FIG. 3 shows a right side view of FIG.
In the device B of this embodiment, a profile head 4' that comes into contact with the edge 5A of the front or rear window glass 5 of an automobile as a member to be applied with adhesive is attached to the rod 3' of the longitudinal movement cylinder 1'. , the cylinder 1' is supported by a support frame 18 attached to a rod 17 of the vertically moving cylinder 16.

The profiling head 4', similar to that of the conventional device, is configured to move around the edge 5A of the windshield 5, which rotates.
In other words, the window glass 5
This is a member attached to the tip of the rod 3' in order to apply adhesive to the edge 5A while following the edge 5A of the rod 3'. We are prepared.

The cylinder 16 is supported by a support frame 21 whose lower end is supported by a horizontal support shaft 20 relative to the pedestal 19, and the support frame 21 is in an upright state when it abuts against a stopper 19A formed on the pedestal 19. .

The profiling head 4' is arranged to align the edge 5 of the window glass 5, as shown in an enlarged longitudinal side view in FIG.
It has a notch 22 that faces A, and a plate-shaped nozzle 23 that opens obliquely forward and downward is installed in this notch. The nozzle 23 has an opening 23A serving as an adhesive discharge port 6' communicating with an inclined hole 24 of the tracing head 4', and the inclined hole 24 is connected to an adhesive supply source (not shown) via a hose 25.

On the other hand, a roller 26 is attached to the tracing head 4' at a position directly below the nozzle 23. The roller 26 is a member that idles around a hub 28 fixed to the tracing head 4' by a bolt 27, and is able to guide the window glass 5 without fear of scratches.

Further, the head 4' has a handle 29 on the top surface.
The lower end of the vertical shaft portion 29A is fixed to the block 30, and the vertical shaft portion 29A is supported on the block 30 so as to be freely rotatable. Block 30 is fixed to the tip of roller 3' of cylinder 1'.

The tracing head 4' horizontally rotates around the block 30 by grasping and rotating the rear end of the handle 29, and then the tightening/rotating handle 31 attached to the pedestal 19 (see FIG. 3) Operate the support frame 2
By loosening the fastening between the support frame 1 and the frame 19 and allowing the support frame 21 to rotate about the support shaft 20, rotation in a vertical plane is made possible.

As shown in the enlarged sectional view in Fig. 5, the cylinder 1' has a built-in piston 2', and by fixing the inner end of the piston rod 3', the effective pressure receiving area on the rod 3' side is on the opposite side. It is designed to be smaller than the effective pressure receiving area of .

Further, since the inner end of the piston rod 3' is fixed to the piston 2', the rod 3' is supported on the axis of the cylinder 1' together with the mouth 33 of the cylinder 1', which will be described later, and its reciprocating movement is supported. You will be guided smoothly.

For example, the pressing force against the window glass is P, the effective pressure receiving area of the right side surface 2'A of the piston 2' is S ₁ , and the effective pressure receiving area of the left side surface 2'B of the piston 2' (rod 3' side) is S ₂ , the pressure of compressed air is p, and the diameter of rod 3' is d, then P=pS ₂ −pS ₂ =(S ₁ −S ₂ )p=π/4d ² p …(1) Here, p = 3Kg/cm ² , d = 1cm, P = π/41 ² × 3 = 2.35 (Kg) ...(2) Also, if p = 2Kg/cm ² , d = 1.3cm, P = π/ 4×(1.3) ² ×2=2.65(Kg) (3) Therefore, the desirable pressing force P is 2 to 3 kg.

Furthermore, as shown in the rear view of FIG. 6, the piston 2' is provided with notches 32 at four equiangular division positions on the peripheral edge, and the air pressure is supplied from the port 10' provided near the front end of the cylinder 1'. into the two front and rear chambers 1'A and 1'B in the cylinder 1' with the piston 2' in between.
It is designed to be distributed throughout.

The inner diameter of the mouth 33 of the cylinder 1' through which the rod 3' passes is slightly larger than the outer diameter of the rod 3'.

In this embodiment, a notch 32 is provided at the peripheral edge of the piston 2' to allow the two chambers 1'A and 1'B to communicate with each other, but the notch 32 may be replaced by a hole.
Further, the two chambers 1'A and 1'B may be made to flow by forming the outer diameter of the piston 2' smaller than the inner diameter of the cylinder 1' by a required amount.

The cylinder 16 also has the same structure as the cylinder 1'.

In addition, the window glass 5 is supported on the turntable 9 by a vacuum cup 34, and the turntable 9 is eccentrically rotated approximately corresponding to the planar shape of the window glass 9. do.

The device B of the present invention having the above configuration is installed together with a turntable 9 at a predetermined location along an automobile assembly line, and supports the supplied window glass 5 on the turntable 9 in a predetermined direction. The positions of the support frames 18 and 21 are adjusted to bring the tracing head 4' into contact with the edge 5A of the window glass 5.

If you start the turntable 9 from this state,
The window glass 5 rotates while pushing the tracing head 4', and during this time the adhesive discharged from the adhesive discharge port 6' is applied to the window glass 5 along the edge 5A.
is applied to the top surface of the At this time, the direction of the nozzle is manually operated using the handle 29 so that it is substantially tangent to the outer periphery of the glass.

The piston 2', which is integral with the profiling head 4' which is in contact with the edge 5A of the window glass 5, is constantly subjected to pressure in the direction of bringing the profiling head 4' into contact with the window glass 5 due to the difference in effective pressure receiving area. There is.

The movement of the piston 2' is carried out with the two chambers 1'A and 1'B of the cylinder 1' between which the piston is located, being at equal pressure, so there is no need to provide a relief valve in the piping, and there is no need to provide pressure air. As the piston 2' moves due to the flow between the chambers 1'A and 1'B, the head 4' moves along the window glass 5.
Even if the glass is pushed, there will not be a reaction force large enough to break the glass.

Furthermore, with the device of the present invention, in which the cylinder 1' is not hand-held, it is possible to always apply an even amount of adhesive.

Furthermore, in a cylinder 1' in which chambers 1'A and 1'B communicate with each other, the pressure supply port 10' may be provided on either side of chambers 1'A and 1'B. .

In particular, unlike conventional devices that release pressure using a relief valve, the resistance applied to the piston 2' is almost zero, so it can easily and smoothly follow the window glass, which is the plate-shaped member to which the adhesive is applied. Adhesive application speed is significantly increased.

As is clear from the above description, the device of the present invention can complete the application of adhesive to windshields at ultra-high speeds at the assembly points of front windshields and rear windshields on, for example, automobile manufacturing lines. This method has excellent advantages such as the most time-consuming adhesive application work can be easily completed without any risk of reducing the work unit time in the process, and the structure is also extremely simple.

[Brief explanation of drawings]

Fig. 1 is a system diagram showing an example of a conventional device with a part cut out, Fig. 2 is a front view showing an embodiment of the device of the present invention with a part cut out, and Fig. right side view,
FIG. 4 is an enlarged longitudinal sectional view of the tracing head, FIG. 5 is an enlarged longitudinal sectional view of the cylinder, and FIG. 6 is a rear view of the piston. 1'...Cylinder, 2'...Piston, 3'...
Rod, 4'...Trailing head, 5...Window glass, 5A...Edge, 6'...Adhesive discharge port,
9... Turntable, 10'... Port, 23
... Nozzle, 29, 31 ... Handle.

Claims (1)

[Scope of utility model registration request] a cylinder communicating with a fluid pressure source; a piston slidably disposed within the cylinder and dividing the cylinder into two chambers; one end attached to the piston and the other end extending through one chamber of the cylinder; The rod is rotatably attached to a block fixed to the other end of the rod and is connected to an adhesive supply source, and the adhesive is applied to the peripheral edge of the window glass. 1. An adhesive applicator comprising: a tracing head equipped with an adhesive discharge port for applying an adhesive; the piston is provided with communication means for communicating the two chambers.