DE7108276U - Frame welding machine - Google Patents

Description

Frame welding machine

The invention relates to a frame welding machine with four Clamping devices for plastic profiles, which clamping devices are provided at right angles to each other and two of which are opposite each other by a drive device can be moved towards one another to carry out the welding process, with welding associated with the welding points mirrors are arranged, which can be moved out of the weld.

In such known frame welding machines, the four corners of a frame are welded at the same time. There are also profiles arranged on clamping devices, all four, namely two opposite each other towards each other, under a common drive can be moved towards the center of the frame. First of all, the profile ends are attached on both sides Welding mirror pressed in the miter line of the to be manufactured Are arranged in the corner. After the profile ends have melted sufficiently, all clamping devices are restored moved outwards, after which the welding mirrors are lifted out, followed by another movement of the Clamping devices pressed together the fused profile ends towards the center to produce the welded connection will.

Such welding machines have the advantage that a closed frame can be produced in one operation, but they only allow the production of simple frames with external struts ,

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CONT. Ni DRESDNER SANK, K ^{CH ECK} HAMBURG NO. 1937 66

In many cases, such frames, in particular window frames, r.ber also wanted fighters in the middle area »Since the ends of the fighter have a predetermined distance, it is not possible to have the two ends of the fighter also assigned to them Bring welding mirrors in a corresponding manner for partial melting. The conceivable use of welding mirrors of different thicknesses is not considered advantageous in this context, because welding mirrors of different thicknesses for the corner connection and the transom connection lead to different melting times would. In addition, the actual welding process at the ends of the transom would then result in relation to the corner connections only half the reprinting pressure, so that no proper ties to Switzerland can be achieved "

The invention is based on the object of creating a frame welding machine, which makes it possible, without additional effort, to also manufacture struts in a frame in one work step with the manufacture of corner connections, such a machine, according to a further embodiment, then also being able to be used for the simultaneous manufacture of several frames should be.

This object is achieved in that two each other opposing clamping devices are arranged stationary for the welding process, and that preferably between These clamping devices at least one additional clamping device parallel to them, also arranged in a stationary manner is, the ends of which are assigned additional welding mirrors.

Simply because there are only two clamping devices to the center are moved, there is a compared to the known design significantly improved machine because, apart from one lower drive effort, also the accuracy due to the stationary arranged clamping devices is improved. Furthermore, the machine can be made significantly simpler and lighter will.

The preferred configuration has the considerable advantage that the simpler machine does more than known machines, because it enables the production of a frame with one or more struts, depending on how many additional clamping

facilities are provided. In the machine according to the invention the welding process results in the same movement distances at the frame tokens and the ends of the transom.

It is preferred that the welding mirrors are resiliently mounted in the direction of movement of the Dpanneinrichbuagexi movable for the welding process. This makes it possible to evenly melt the profile ends to be connected, even if only one of the profiles to be connected is moved.

For example, the welding mirrors are arranged on height-adjustable supports. In this case, in the head of the carrier, a tensioning device / parallel guide track with bearings for a carrier carriage, on which the welding mirror is arranged, is expediently provided in the direction of movement of the clamping device for welding, and a tension spring is provided between the guide track and carrier carriage, which the welding mirror in an end position of the guide _f , namely against the direction of movement in which the clamping device is moved for welding, holds resiliently. The welding mirror for the at least one additional clamping device for the arrangement of eg fighters is designed with an angular cross section, the ends of the fighters being shaped accordingly and corresponding recesses arranged in the frame profiles.

According to a preferred embodiment, the machine has two guides that are adjustable to one another transversely to their longitudinal direction, One of which is also arranged in a stationary manner on the bed and only the other needs to be mounted in relation to adjustment means. On these guides are yours Longitudinal supports are adjustable, each with one end of a clamping device that is fixed during welding and have a support for a welding mirror and on which slides can be driven transversely to the longitudinal axis of the guides are provided, which are connected to a common drive means for carrying out the welding process and which Wear movable clamping devices during the welding process.

This results in a simple machine structure with favorable Setting options for the support. It is preferred that

opposite supports for during welding Fixed clamping devices can be adjusted synchronously along the guides by a common drive means. Through this is always an exact alignment of the clamping device ends for the clamping devices fixed during the welding process guaranteed. It goes without saying that the supports protrude in the direction of the other guide may have, on which clamping means are provided for the profiles. ,

According to an advantageous embodiment, the welding mirrors are fixed in the middle between the outer ones during welding set clamping devices arranged clamping devices provided interchangeably. The purpose of this is that when an execution in which, for example, two additional clamping devices are arranged, also on the additional clamping devices Frame edge profiles can be arranged so that several frames - for example, different heights, but the same width at the same time can be produced. This improves the possibility of using the machine. From this point of view are in a further embodiment, with the arrangement of at least two additional tensioning devices, adjacent supports on a guide jointly adjustable transversely to their longitudinal direction. This allows frames of different widths to be created at the same time produce.

Preferably, a single drive for all slides is through a pressure means is provided, which the moving device of the slide on the movable guide through a flexible pipe connection is fed. Such hydraulic or pneumatic Drives are known per se, but what is essential for the invention is that these drives are guided on slides are, which ir. are provided on guides arranged supports and which the clamping devices movable during the welding process wear.

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The invention is explained in the following using an exemplary embodiment which is shown in the drawing. In this show:

1 : a plan view of a machine shown schematically;

Figure 2 is a front view of Pig. I;

FIG. 3: on an enlarged scale, a detail from FIG. 2;

FIG. K : a plan view of FIG. 3 in partial representation;

5: a section along the line VV from Pig. 3.

In the drawings, only the elements that are essential for understanding the invention are shown - for the most part schematize *!

An elongated guide 1 is arranged in one piece with a machine bed which is otherwise not shown in detail. The machine bed has rails 2, 3, for example on the cortex of the guide 1 and perpendicular to its extension. On the rails 2, 3, another guide 4 corresponding to the guide 1 is mounted parallel to the guide 1 and can be moved back and forth on the rails 2, 3. For example, the rails 2, 3 are assigned spindles 5, 6, which are under a common drive, not shown in detail, in order to be able to set the distance between the guides 1, k in a fixed manner.

On these guides there are four supports 7, 8, 9, 10 and 11, 12, 13, I ^ arranged. Examples are those assigned to one another Supports 7 and 11 firmly arranged, while the one.

ε, 12,

of the assigned supports / 9, 13 or «10, 14 in pairs in the longitudinal direction of the guides are adjustable together. For example, as shown in FIG. 2, there is one on each guide Rack 15 arranged, in each of which a pinion 16 meshes, which is arranged on a shaft 17, 18, 19, which extends between assigned supports and is stored in these. It is essential that the shafts 17 to 19 are designed to be variable in length, but their parts are non-rotatably connected to one another. At the ends of shafts 17 to 19 are for example handwheels 20, 21 rotatably arranged, so that by actuation from one side, the associated Supports 8- 12 or * 9, 13 or 10, 14 along the guides 1, 4 are adjustable. There may be undercut on the guides Longitudinal rails provided for the supports.

On the supports are in a direction perpendicular to the extension of the guides back and forth movable carriages 22, 23, 24, 25 and 26, 27, 28, 29 mounted »These carriages carry themselves known clamping devices for profiles 30, 31 each extending parallel to a guide 1,4 »It goes without saying that that these profiles, depending on the size of a frame to be produced, do not go through the entire length of the guides to need.

In this context, known clamping devices, be arranged in the form of foldable tension clamps. Clamping devices that can be locked by means of toggle locks can also be used or tensioning devices which can be adjusted by means of threaded elements, as are known per se, can be provided.

In the direction of movement of the carriages 22 to 29 or the guide 4 are on the mutually facing sides of the mutually associated Supports also clamping devices for frame profiles 32, 33,

3/5 34, 35 provided, of which the profiles 32 and / edge struts are, the ends of which are mitred, while the profiles 33 and 34 are provided as struts or rungs for the frame are. Their ends are - as shown for example at 36 - provided with a double miter, for which purpose in the profiles 30, 31 corresponding angled recesses 37 are arranged.

In order not to burden the illustration, the sections of the carriages 22 to 29 running parallel to the guides 1, 4 are each referred to as tensioning devices 72, 73, 74, 75, 76, 77, 78, 79, v / ahrend des Welding process are movable. The profiles 80, 81, 82, 83, 84, 85, 86, 87 shown on the supports 7 to 14 are referred to as clamping devices which are fixed during the welding process and in which the ends of the profiles 32 to 35 are fixed.

The clamping devices for the profiles 32 to 35 can be in the corresponding Way - as explained above "- be executed the supports 7 to 14 can have approaches which are directed towards one another and which each engage under the end pieces of the profiles 32 to 35 and aaf - which the clamping devices can be provided.

Furthermore, 7 to 14 are vertically movable carriers on the supports

38, 39, kO, kl, 42, 43, 44, 45 for welding mirrors 46, 47

4§, 49 arranged. These carriers and other details are still described with reference to FIGS. 3 to 5. It is only noticed that the welding mirrors 46, 48, which are provided for frame corners, are flat, while the welding mirrors 47, 49 have an angular cross-section corresponding to the connection.

The carriages 22 to 29 are each connected to a cylinder piston device which can bring about a movement in accordance with the arrows shown and a return movement. Compressed air is used as the drive means, for example, which is supplied from a central source or zv / ei central, but synchronously controlled sources 50, 51 via lines, of which at least those 52, 53, 5k, $ 5, which drive the slide 26 to 29 of the movable guide are assigned, are flexible in sections.

From the previous description it can be seen that with the machine For example, a frame with two fighters can be produced in one operation. The guide 4 is at a distance set by the guide i, which corresponds to the frame width. The support pairs 8, 12; 9 »13 are attached to the Brought places where fighters 33 »3 ^ are to be attached. Corresponding the pair of supports 10, 14 is set in place of the frame edge strut 35. Then the frame profiles are in the clamped manner shown and with the welding mirrors located in the connection points all carriages 22 to 29 evenly driven. During the pressing movement of the profiles 30, 31, the welding mirrors move in a manner still to be described with. After sufficient melting, the carriages are moved back, the welding mirror is lifted out and then the Carriage driven again in the sense of the arrows shown and left under a contact pressure until the welded connections are made. This results in all welded connections initially the same contact pressure on the welding mirror and also the same post-pressure.

It is first of all readily apparent that for example by means of the support pairs 7, 11 and 8, 12 on the one hand and 9, 13 and 10, 14, on the other hand, two separate frames can be produced at the same time are, with only the welding mirrors 47, 49 for the Fighters 33 »3 ^ must be replaced.

In the machine described so far, the two frames would have the same width, while their height can be different depending on the setting of the middle support pairs along the guides 1, 4. In a further embodiment, it is possible, for example , to make the supports 9, 10 jointly adjustable across the guide 1. This is possible with a compound slide system. Then the two frames could also be given different widths. Appropriate drives, such as are described for setting, for example, a pair of supports 8, 12 along the guides 1, 4, could be present as drive means for this purpose.

Pig. 3 shows an enlarged view of the support 11 from Pig. 2. It can be seen that the carriage 2ό has a projection 56 which is directed perpendicular to its direction of movement and which is part of the clamping device for the profile 31. The slide is connected via a drive connection, for example a rod 57 'to a piston rod 58 which is led out of a cylinder 59. In this case, the piston 60 can be acted upon in both directions for the described back and forth movement of the slide in a V / eise not shown.

The vertically movable carrier, designated as a whole by 42, has a Head 61 from which an arm 62 projects, to which the welding mirror 48 is attached. This head 61 or arm 62 can for example be exchangeable in order to change the cutting mirror. It is possible to equip the head 61 with several arms 62 which are angularly offset from one another and which are different Have welding mirror. This would make it possible to use different welding mirrors when the head is rotated to bring to use, especially for the carrier 39, 40; 43, 44 would be of importance.

parallel

In the head there is a guide track 63 directed towards the direction of movement of the slide 26, in whose planks 64, 65, for example, ball bearings for a so-called carrier slide 66 are arranged. As can be seen in particular from FIG. 5, the guide track 63 is designed to be longer than the carrier slide 66. A compression spring 67 is arranged between the two parts, which presses the carrier slide 66 against one end of the guide track 63 or against an abutment arranged there, namely in a direction which is opposite to the direction of movement for producing the welded connection. When the carriage 26 is thus moved to the left with respect to FIG. 5, the cutting mirror 48 can follow this movement with the compression of the spring 67.

The overall designated 6l carrier head, the parts 62 to

66 unfolds, is guided through a bearing 68 on a support 11 Column 69 supported at the lower end with a piston rod 70 a cylinder-piston device which can be acted upon in two directions 71 is connected. This is synchronized with the cylinder piston equipment controlled for the movement of the carriages 22 to 29 to carry out the workflow described above to be able to.

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Claims (10)

S chirb zans claims 1. Frame welding machine with four clamping devices for plastic profiles, welqhe clamping devices right-angled are provided to each other and of which two opposing each other by a drive device for implementation of the welding process can be moved towards one another, with welding mirrors assigned to the welding points being arranged which can be moved out of the welding point, characterized in that two opposite one another Clamping devices (80, 84; 83, 87) are arranged stationary for the welding process, and that preferably between these clamping devices at least one additional clamping device parallel to them (81, 85; 82, 86) is also arranged in a stationary manner, the ends of which are assigned additional welding mirrors (47 »49). 2. Welding machine according to claim 1, characterized in that the welding mirror (46-49) in the direction of movement Clamping devices (72-79) which can be moved for the welding process are flexibly mounted. 3. Welding machine according to claim 2, wherein the welding mirrors are arranged on height-adjustable supports, characterized in that that in the head (61) of the carrier (42) a clamping device movable in the direction of movement of the welding (72 - 79) parallel guideway (63) with bearings (64, 65) provided for a carrier / chutes (66) KO NiTENi DRESDNER BANK, CH ECK HAMBURC NO. 1937 66 is on which the welding mirror (48) is arranged, and that between the guide beam and the carriage there is a tension spring (67) is provided, which the welding mirror (48) in an end position of the guide, namely against the direction of movement, in which the clamping device (72-79) is moved for welding, resiliently holds » 4. Welding machine according to claim 1 to 3, characterized in that the welding mirror (47, 49) for the at least an additional clamping device (81, 85; 82, 86) on the arrangement / of Fighters (33, 34) are designed angular in cross section. 5 · Welding machine according to one of claims 1 to 4, characterized by a machine bed with two guides (1, 4) that can be adjusted transversely to their longitudinal direction, ' on which supports in their longitudinal direction (8-10; 12-14); are arranged adjustable, each one end of a \ fixed clamping device during welding ί (80, 84; 81, 85; 82, 86; 83, 87) and a carrier (38-45) for a welding mirror (46-49) and on which they can be driven transversely to the longitudinal axis of the guides (1, 4) '' Carriages (22-29) are provided that can be used with a common ■ ·. seed drive means (50, 51) for performing the Sahweiß are connected to the process and carry the movable clamping devices (72-79) during the welding process. 6. Welding machine according to one of claims 1 to 5, characterized in that opposite supports (8, 12 ;, 9, 13; 10, H) for clamping devices that are fixed during welding (80-84 along the guides (1, 4) synchronously adjustable by a common drive means (16, 17-19, 20, 21) sinJ. 7. Welding machine according to claim 6, characterized in that the common drive means variable-length shafts (17-19), at the ends of which gears (16) are non-rotatable '· Are arranged that mesh with racks (15) that are in j the guides (1, 4) are provided, 7108276- ² SHs. 71 8, welding machine according to one of claims 1 to 6, characterized in that the welding mirrors (47, 49) for clamping devices (80, 84; Ö5, 67) arranged in the middle between the outer clamping devices (80, 84; Ö5, 67) which are fixed during welding. 81, 85; 82, 86) are provided interchangeably. 9. Welding machine according to claims 5 to 8, characterized in that at least two additional clamping devices (81, 85; 82, 86) are provided, and that adjacent supports (9 »10) on a guide (1) transversely to their Are stored longitudinally adjustable together. 10. Welding machine according to one of claims 5 to 9 _f, characterized in that a common drive (50, 51) for all carriages (22-29) is provided by a pressure medium which the moving device of the carriage (22-29) on the movable Guide (4) is fed through a flexible pipe connection.