JPS6220001B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The invention relates to a device for assembling and joining flat workpieces, in particular sheet metal pieces, as defined in the preamble of claim 1.

Devices of the above type are known (DE−AS−
1152527) In this known device, the feeding means arranged on the heating body or on the heating device is a carriage that can be easily displaced longitudinally on the roll body. The lower carriage is propelled by weight on the bar, and the upper carriage is carried along with it. To return the trolley to its starting position, the weight is lifted again.

The disadvantage of the above-mentioned arrangement is that the roll track and the roll body of the carriage are easily contaminated, so that a satisfactory feeding and pressing movement of the sheet metal parts is not guaranteed. The roll bearing of the carriage makes it difficult to adapt the carriage along the edges of the sheet metal strips, which are often corrugated or arcuate.

It is an object of the invention that by suitably designing the feed means, a perfectly uniform pressing movement of the sheet metal parts, which are each fed straight onto the firmly clamped sheet metal pieces, is ensured. The object of the present invention is to provide a device of the type mentioned at the beginning of the text. At the same time, the device allows automatic feeding of the first workpiece.

According to the present invention, the above problem is solved by the configuration of the characteristic portion of claim 1.

Advantageous embodiments of the invention are described in the dependent claims.

Hereinafter, the present invention will be explained in detail based on illustrated embodiments.

As shown in FIG. 1, this device includes a supply table 2,
It comprises a lower part with a fixed lower pressure device 3 and a support table 4 on the discharge side. The supply table 2 comprises several supply conveyor belts 5 arranged parallel to one another at intervals, said conveyors running over deflection rolls 6, 7 and driven by a drive roll 8.

Above each feed conveyor belt 5 there is provided in the upper part 10 of the device a roll 9 which can be pivoted and pressed against said belt 5 by means of a spring 11.

The upper part 10 comprises an upper pressure device 13 which can be raised and lowered by means of a beam 12, which pressure device is supported by a spring 15.
It is attached to a bolt 14 so as to be displaceable with respect to the beam 12 against the pressure of.

Each of the pressurizing devices 3 and 13 comprises a heating cover 16, 17 which can be heated electrically, for example, the lower heating cover 16 is fixed, while the upper heating cover 17 is elastically attached to the beam 12 which can be raised and lowered. There is.

Upper and lower pressure plates 20, 21, which are pivotably mounted on the articulated levers 18, 19, are used for pushing flat workpieces, such as, for example, pieces of sheet metal, and for crimping the edges of the pieces of sheet metal that have previously been applied with adhesive. form a feeding means for

The lower articulation lever 18 is articulated with the lower, fixed pressure device 3, and the upper articulation lever 19 is articulated with the upper, lowerable pressure device 13.

In a direction transverse to the direction of travel indicated by arrow 23, the pressure plate 20 or 21 is divided into individual plate members 24 or 25, each plate member 24, 25 having three articulated levers 18a arranged triangularly in plan view. ,18
b, 18c or 19a, 19b, 19c are attached. The joint levers 18 and 19 are supported by spherical joint bearings 33.

A piston-cylinder assembly 26 is arranged between the two lower plate members 24 in each case as a feed drive for the two plate members 24 in each case.

Upper pressure plate 21 is carried against the pressure of spring 27 by the friction between pressure plates 20, 21 and 22 during the forward movement indicated by arrow 23. Each spring 27 is guided on a rod 28 and placed between the upper pressure device 13 and the articulated lever 19c, the spring 27 pressing the articulated lever 19c towards the stop 29. heating bar 1
6 or 17 and the pressure plate 20 or 21 have cutout portions that are offset from each other, so that these two members mesh like teeth.

A stop bar 30 is disposed between the lower heating bar 16 and the lower pressure plate 20 and is movable up and down at the cutout portion.

FIG. 2 shows the leading workpiece-pushing device 50. As shown in FIG.
This pushing device is arranged in the lower part 1 in front of the lower pressing device 3, seen in the direction of travel 23. Top workpiece
The pushing device has a U-shaped workpiece at one end.
It comprises at least two parallel gripping levers 51 with gripping parts 52. These levers are guided in coupling ring guides 54 by rolls 53. A pivoting lever 55 is articulated on each gripping lever 51 and is mounted on a shaft 56, said shaft being coupled to a further pivoting drive, not shown.

The turning drive device holds the leading workpiece with a stopper bar 30.
When the gripping lever 51 is lifted at the same time in order to push it all the way to the back of the ring, it is pushed together with the connecting ring-guide. When the gripping lever 51 is retracted, it is again lowered below the support surface 57 of the supply table 2.

The working process of the above device will be described in detail below with reference to FIGS. 3-8.

Referring to FIG. 3, the leading work piece or sheet metal piece 22a is pushed in by the feed conveyor belt 5. Referring to FIG. The gripping lever 51 of the leading workpiece-pushing device 50 can grip the rear front side of the workpiece.

The gripping lever 51 is actuated by the turning lever 55.
is lifted, and the workpiece-gripping part 52 is lifted up and the workpiece 22 is
a and push it behind the stop bar 30 between the pressure devices 3 and 13 (see Figure 4).

Referring to FIG. 5, the stop bar 30 is then lifted and the leading workpiece-pushing device 50 is moved onto the support surface 5.
Returned to starting position under 7. Another sheet metal strip 22b is carried by the supply conveyor belt in the direction of arrow 23 to the stop bar 30 until it abuts behind sheet metal sheet 22a.

Subsequently, as shown in FIG. 6, the stop bar 30 is lowered, and the upper pressure device 13 is moved together with the upper pressure plate 21 towards the lower pressure device 3 or the lower pressure plate 20, so that the thin plate piece 22a is held between the pressure devices, and the thin plate piece 22b is held between the pressure plates 20 and 21.

Referring to FIG. 7, actuation of the piston-cylinder assembly 26 then displaces both pressure plates 20, 21 in the direction of arrow 23, thereby causing
2b is the edge of the front thin plate with adhesive attached to thin plate 2.
Pressed onto the rear adhesive edge of 2a.

Thereafter, the heating bars 16, 17 are applied to the sheet metal pieces at high pressure, and the heating action quickly, firmly and uniformly joins the sheet metal pieces together.

Subsequently, as is clear from FIG. 8, the pressurizing device 1
3 and the heating plate 21 are lifted again and the glued sheet metal pieces 22a, 22b are carried further in the direction of travel 23 by the drive rollers 31 until the stop bar 30 can be lifted again. At the same time, a new sheet metal piece 2 is added by the feed conveyor belt 5.
2c is brought up to the stop bar 30 and a new working process can thus be started according to FIGS. 5-8.

The first workpiece-indentation device 50 is used to automatically press in the first sheet metal section at the beginning of the working process. No manual operations are required for this, so it is possible to start the work process completely and reliably.

The pressure plate provided on the articulating lever makes possible a perfectly uniform feeding and/or pressing movement for the sheet metal strip to be supplied which is already located between the pressure devices.

The sliding bearing of the pressure plate of the articulating lever or the articulating lever of the pressure device, which is designed as a ball-and-socket joint and is insensitive to dirt, ensures safe operation even in the case of heavy dirt deposits. In this case, if the frictional conditions are approximately the same, the same pressing conditions are guaranteed. By dividing the pressure plate into a spherical bearing of the articulating lever and a separate plate part, said plate part can easily fit loosely into the corrugated or arched edge of the sheet metal part, with the pressure When the device is lowered, the plate member is pressurized straight.

Since the relatively long articulating lever causes only very small arching movements, the resulting small height displacements of the pressure plate can be compensated for by the elastically arranged upper pressure device.

[Brief explanation of the drawing]

FIG. 1 is a partial longitudinal sectional view of the apparatus according to the invention; FIG. 2 is another partial longitudinal sectional view of the apparatus shown in FIG. 1; FIGS. 3 to 8 show the apparatus of FIG. 1 in various working stages. FIG. 2... Supply table, 3... Lower pressurizing device, 4
... support table, 5 ... supply conveyor belt,
6, 7... Turning roll, 8... Drive roll, 9...
... Roll, 10 ... Upper part, 11, 15 ... Spring, 12 ... Beam, 13 ... Upper pressure device, 1
6...Lower heating bar, 17...Upper heating bar, 1
8, 19... Joint lever, 20, 21... Pressure plate, 24, 25... Plate member, 26... Piston.
Cylinder assembly, 27... Spring, 28... Rod, 3
0...Stopping rod, 51...Gripping lever, 50...Top work piece-pushing device, 52...Work piece-gripping portion, 54...Connection link-guide, 55...Swivel lever.

Claims (1)

[Scope of Claims] 1. A workpiece with a pre-glued edge, which is sandwiched by a displaceably mounted upper pressure device and a fixed lower pressure device, is attached to said pressure device. In an apparatus for assembling and joining flat workpieces, especially sheet metal pieces, into a continuous strip, which are successively pressed at right angles to the seam by means of a feeding means provided,
The feed means are formed as upper and lower pressure plates 20, 21, said pressure plates being mounted longitudinally displaceably on the pressure devices 3, 13 by articulated levers 18, 19, and at least one, in particular the lower pressure plate, being mounted longitudinally displaceably on the pressure devices 3, 13. An assembly and joining device characterized in that a pressure plate 20 is connected to a feed drive device 26 and a leading workpiece-pushing device 50 is arranged on the inlet side. 2. Assembly and connection device according to claim 1, characterized in that the feed drive is at least one piston-cylinder assembly 26 connected to the articulated levers 18, 19. 3. In the assembly/coupling device according to claim 1 or 2, the joint lever 19 of the upper pressure plate 21
Assembly and connection device, characterized in that at least one spring 27 is attached to the spring 27, said spring being arranged so as to act against the pressing movement occurring in the direction of travel 23 of the pressure plate 21. 4. In the assembly/coupling device according to any one of claims 1 to 3, the pressure plates 20, 21
is the individual plate member 2 in a direction transverse to the traveling direction 23
4, 25, and each plate member 24, 25 has 3
one joint lever 18a, 18b, 18c or 19
An assembly/coupling device characterized in that a, 19b, and 19c are arranged. 5. In the assembly and coupling device according to claim 4, each piston-cylinder assembly 2
6 is arranged between two plate members 24 so as to operate them.
Coupling device. 6. In the assembly/coupling device according to any one of claims 1 to 5, the pressure plates 20, 21
are supported on the articulated levers 18, 19, and these articulated levers are supported on the pressure devices 3, 13 by spherical articulated bearings 33, said bearings being formed as sliding bearings insensitive to dirt. Coupling device. 7. The assembling and joining device according to claim 1, characterized in that the leading workpiece-pushing device 50 is provided with at least one gripping lever 51 that is movable back and forth in the direction of movement 23 and simultaneously movable up and down. Assembling and joining equipment. 8. Assembling and joining device according to claim 7, characterized in that the gripping lever (51) is displaceably supported in the connecting link-guide (54) by at least one roll (53). 9. An assembly and coupling device according to claim 7 or 8, characterized in that a movable pivoting lever 55 is connected to the gripping lever 51 by at least one pivoting drive.