CA2230361C

CA2230361C - Corner mounting machine

Info

Publication number: CA2230361C
Application number: CA002230361A
Authority: CA
Inventors: Volker Kluber
Original assignee: Schueco International KG
Current assignee: Schueco International KG
Priority date: 1997-01-10
Filing date: 1998-02-24
Publication date: 2006-04-18
Anticipated expiration: 2018-02-24
Also published as: DE19700604B4; RU2196656C2; CA2230361A1; DE19700604A1; ATE223769T1; EP0950444A1; EP0950444B1

Abstract

The corner mounting machine is equipped with at least one head (14) which has a punching/stamping device for a corner of a frame made of mitered hollow sections (2). Corner connectors are provided in the frame corner within the hollow sections (2), said corner connectors being fixed in position by punchings in the walls of the hollow sections (2). The punchings are carried out with punches (5) which are operated via drive units (23). The corner mounting machine is designed in such a way that one punch design (5) is sufficient to do all punchings in a frame. The punches (5) are arranged with the drive units on a guide block (24) which is symmetrical to a median line (8a) which lies in the miter plane (8) of the frame corner. The guide block (24) is moved along the median line, so that the punch (5) with its drive units travels parallel to the mitering plane. The frame corner rests on a bearing (10) which is provided with calipers (15) and can be adjusted vertically to the frame plane independent of the punches (5). Punchings can be made in various vertical positions of the height of the sections (2). The corner mounting machine may be used for the manufacture of window frames, door frames or frames for façades.

Description

Description Corner Mounting Machine The invention concerns a corner mounting machine with at least one punching/stamping device for a corner of a frame, made from mitered hollow sections and corner connectors inserted into the hollow sections, of a window, a door, a facade field or the like having calipers provided with an angular groove for fitting against the frame corner and with two drivable punches.
A corner mounting machine of this type is known (DE-OS 2 001 608) in which the stamping units equipped with the punches or punch knives are situated on a machine table so as to be stationary and which serves as a support for the hollow sections forming the frame corner. The hollow sections can be vertically aligned to the punch knives or punches by additional section supports. To adjust the frame corner to the desired punch size, calipers are provided which are furnished with an angular groove for fitting against the frame corner and which can be adjusted in its longitudinal axis vis-a-vis the machine table.
In the known corner mounting machine, special punch knives which vary in their length are required for each section system forming the frame since the punching and stamping units have a preset lift.
Thus, the disadvantage for the manufacturer is that a number of different punch knives must be available for the various frame sections. As a result, mistakes and irreparable damage to frames and punch knives are not unusual. The installation of the corner mounting machines is also associated with considerable expenditure.
In multi chamber sections that are common today and that are preset by heat-insulated composite sections, sections must be punched whose chambers for receiving the corner connector at right angles to the plane of the frame no longer align with one another. That is, that the punching points - seen on the miter plane - no longer coincide but exhibit a displacement.
In the known corner mounting machines which can be equipped as a single head or multi head corner connecting machine, it is thus necessary to allocate corresponding multi-cut punching tools to the punching and stamping units which offset this given chamber displacement. Accordingly, it is necessary, when changing a frame section, to also change the punch knives and to readjust the machine.
The object of the invention is to design a corner mounting machine of the aforementioned type in such a way that one punch or knife design is sufficient to do all stampings on frames which are of various sizes and from different frame sections. Furthermore, the adjustment to another frame section should be substantially simplified.
The invention provides corner jointing machine having at least one punching/embossing device for a corner of a frame of a window, a door or a facade panel, this frame being produced from mitre-cut hollow profiles and corner connectors inserted into the hollow profiles, having a probe provided with an angle groove for bearing against the frame corner, and having two drivable punches driven by drive units, characterized in that the punches are movable with their drive units parallel to a mitre line, which lies in a mitre plane, and a rest accommodating the frame corner can be adjusted perpendicularly to a frame plane independently of the punches.
Exemplary embodiments of the corner mounting machine of the invention are described below and illustrated in the drawings, wherein:
Figure 1 shows the principle of a punching corner mounting machine for hollow section frames, Figure 2 shows in section a frame corner in section, consisting of mitered frame sections and a corner connector, Figure 3 illustrates the dimensional dependencies of a sectional system, Figure 4 shows to a smaller scale a frame as well as the head of a corner mounting machine according to the invention, Figure 5 shows to an enlarged scale a heat-insulated composite frame section profile, Figure 6 shows a corner mounting machine according to the invention, furnished with four punching and stamping heads, and Figures 7 and 8, show structural details.
The corner connector 1 in which a closed or partially open chamber of a mitered frame section 2 is inserted has a groove or an appropriately formed cup 4 on each of its sides 3 on the outside or inside. By means of a punch 5, which is dimensionally allocated to the corresponding groove or cup 4, wall material is punched out from the frame section 2. The punch 5 stamps out a punch pocket 6 which remains articulated in one piece on the frame section 2 toward the mitered end.
The punch 5 acts in direction 7 and forms an angle a to the miter plane 8 which is generally an acute angle.
Between the effective direction 7 of the punch 5 and the effective surface 9 of the groove 4 of the corner angle 1, an acute angle p results which ensures that the punch pocket 6 stamped into the groove 4 is supported on the active surface 9 and exerts a reaction force onto the frame section mitering by means of the wedge action of the angle R, so that a prestressed form-locking of the miter surfaces results. The structure of the corner mounting machine according to Fig. 2 originates from DE-OS 2 001 608. This corner mounting machine has a punch head with two punching units each arranged at an angle a to the axis of the miter which are equipped with punches 5 or punch knives. The mitered frame corners provided with the corner connector are aligned by means of angular calipers 11 which must be aligned with respect to the grooves 4 in the direction of mitering dependent on the dimensional structure of the corner angle. The frame sections are then firmly clamped on the sectional support 10 by means of clamping cylinders, while an abutment is driven into the frame corner inside the miter, the object of which is to absorb the punch pressure during the coining process in single head corner mounting machines.

This abutment can be omitted in four-head corner mounting machines since, during a simultaneous punching process with all four punching heads, the punching forces cancel each other out.
Fig. 3 shows the dimensional dependencies to which a sectional system is subjected. Relative to the corner connector 1, according to the system, a punch point 13 is fixed at the corner angle 1 which results from the measurements A and B or C relative to the 90° outside angle of the corner connector.
The punching point 13 thus defined is, as a rule, fundamentally the same in all corner angles occurring in a series. This results in a punch measurement E relative to the theoretical outer corner of the corner angle 1 protected in the mitering plane 8.
The sectional punch measurement R relative to the frame corner is dependent on the wall thickness b of the section and the clearance s between the corner angle and the section chamber into which the corner angle is inserted.
The measurement x noted in Fig. 3 represents the sum of b and s, so that the equation is x = b + s.
The punch measurement of the section is R = E + X x ~2.

Fig. 4 shows a head 14 of a corner mounting machine whose support 10 carries a section frame consisting of frame sections 2. The frame corner is aligned at stationary calipers 15 and fixed e.g. by corresponding clamping cylinders and, if necessary, an abutment to the extent that this is a single-head machine. The stationary calipers 15 arranged on the support 10 adjoin the wall of the outermost corner connecting chamber of the thermally insulated composite section 16 shown in Fig. 5. The composite section 16 has chambers 17 and 18, whose walls 19, 20 which are to be provided with one or more corrugated reinforcements are at a displacement 21. Chamber 17 should be considered as outer chamber for accommodating a corner angle, so that the calipers as per Fig. 4 adjoin the miter corner, formed by the wall 19, and thus align the frame for the corner punching.
The caliper 15, which can be vertically adjusted on the support 10, can also be placed at any other point on the frame corner, thus e.g. also on the stop web 22 in the outer area of the frame corner.
The punches 5 are actuated by drive units 23 which operate electromechanically, hydromechanically or pneumomechanically. These drive units 23 carry out the respective punching procedure.
Both drive units 23 are mounted on a guide block 24 which can be adjusted and positioned in its centre line 8a which lies in the miter plane 8.
Fig. 6 shows a four-head corner mounting machine according to the invention which is provided with four identical heads. Each head makes the corrugations in a frame corner for fixing the corner connector(s). To save space in the workshop and for improved handling of the frame consisting of hollow sections, it is advantageous to arrange the heads of the machine vertically on top of and adjacent to one another or to place them in a slightly backward inclined position.
The machine has a base 25 which forms the frame of the machine and on which a guide frame is positioned vertically or slightly diagonally upward.
The left lower head 14.1 is mounted so as to be stationary, while the head 14.2 provided above it can be adjusted and positioned at right angles thereto. The right lower head 14.4 can be horizontally adjusted to head 14.1 and stopped. Head 14.3 can carry out both a horizontal and a vertical movement in order to assume its operating position or drive out of its operating position.
The vertical axis 27 and the horizontal axis 28 can travel and be positioned in a computer-controlled manner. The heads 14 are hereby prepositioned in such a way that the measurement between the calipers 15 is slight, 1.e. about 3 mm greater than the frame measurement on the corresponding caliper position on the frame section. The insertion of the frame is thus secured. Each head 14 then travels into the final frame measurement position. The corresponding punchings are then carried out in the corner area.
As can be seen in Fig. 5, not only single chamber sections are processed to form frame spars but also multi-chamber sections. These sections can make a multiple punching _ 7 necessary both within a chamber and also in two separate chambers.
In the composite section 16 according to Fig. 5, punchings should be made in at least areas 29 and 30. In wide chambers, as e.g. in chamber 17, two punchings could be made in the areas 31 and 32 instead of one punching in area 29. In addition, hollow sections with more than two chambers can also be processed into frame spars.
This punching or corrugating in areas 29 to 32 is made possible by synchronizing or positioning the support 10 of the respective head 14. The support 10 and the caliper 15 form a structural unit in which the calipers 15 are vertically adjustable vis-à-vis the support 10. The punch positions of the adjustable support 10 are determined or given either in firmly preset cycles and continously electronically actuated.
As already described in connection with Fig. 3, the punch measurements of the corner angles of a system or a series are the same on all corner connectors to be used. That is, all stamping points within a sectional system are always essentially on a parallel line on the right and left of the miter plane 8, which extends at a distance of the measurement B from this plane 8. This can be seen in Figs. 6 and 7.
While the reference measurement of the punch 5 in Fig. 3 is still relative to the chamber wall by means of the guide block 24, the reference measurement R in Fig. 7 for the respective punch relative to the respective distance measurement X~ of the corner angle is dependent on the caliper plane. The punch measurement R1 resulting in each case is _ g _ then calculated from the sum of the corner connector punch measurement E and the quant ity X, x ~2 R1 = E + X, x ~2.
This connection can be seen especially clearly in Fig. 8.
Assuming that the caliper position 33 is at the outermost chamber wall 19, a sectional or wall displacement of VZ results vis-à-vis the next chamber wall to be provided with a punch. Assuming that the thickness of the walls 19 and 20 is the same, then a delivery path R2 of the guide block 24 results from the first to the second punch of V? x ,r2 RZ - Vz x ,r2 .
Due to the adjustability of the punching points 13 along a line parallel to the miter line which extends in the plane of the miter 8 and by means of a movement of the support 10 of the frame corner at right angles to this adjustment line in the plane of the miter, makes it possible for all punchings to be carried out on a frame by means of a single punch knife per drive unit 23.
Advantageously, the punch measurements R are electronically controlled and positioned dependent on the caliper position 33. Furthermore, the vertical positions of the individual punchings in the areas 29 to 32 are electronically accomplished by a corresponding adjustment of _ g _ the support 10 to the punch knives, so that the installation of the machine on a new frame section is reduced to a minimum.
The level of the calipers 15 vis-a-vis the support can also be set automatically in cycles or by a controlled adjustment .
The punches 5 are situated with their drive units 23 on a guide block 24 with which the punches can travel parallel to the miter line which is in the miter plane 8. The drive units 23 are infinitely adjustable in direction of their own 10 effective axes 7. When this active axis is positioned electronically, the measurement B can also be varied. As a result, it is not necessary for the measurement B to be uniform with respect to punching points at the corner connector of a series.
In the embodiments shown in Fig. 4 and in Fig. 6, roller bearings 34 for the frame corner are provided on support 10. These roller bearings 34 align in the embodiments with the caliper surfaces of the caliper 15. The roller bearings 34 have a spring abutment. The effective weight of the frame is diminished by these roller bearings 34, so that the calipers 15 only position the frame corner.
The frame corners are each provided on one side with an injection bore 35 (Fig 3) for adhesives. An adhesive injection bore of this type is provided for each section chamber which accommodates a corner connector.
An adhesive infection device 37 (Fig 6) equipped with a nozzle tip 36 is fastened to the guide block 24. This nozzle tip merely carries out a back and forth lift relative to the adhesive injection bore 35.
The adhesive injection bore is, just as the punching point 13, situated on a line parallel to the miter line, so that the adhesive infection device 37 is positioned in the same way as the punch 5.

Claims

1. Corner jointing machine having at least one punching/embossing device for a corner of a frame of a window, a door or a facade panel, this frame being produced from mitre-cut hollow profiles (2) and corner connectors (1) inserted into the hollow profiles, having a probe (15) provided with an angle groove for bearing against the frame corner, and having two drivable punches (5) driven by drive units (23), characterized in that the punches (5) are movable with their drive units (23) parallel to a mitre line, which lies in a mitre plane (8), and a rest (10) accommodating the frame corner can be adjusted perpendicularly to a frame plane independently of the punches (5).

2. Corner jointing machine according to Claim 1, characterized in that the rest (10) for the frame corner forms a construction unit with the probe (15), and the probe (15) is arranged on the rest in a vertically adjustable manner.

3. Corner jointing machine according to Claim 1, characterized in that the punches (5) are mounted with their drive units (23) on a control slide (24), a centre line (8a) of which lies in the mitre plane (8), and the control slide is movable and lockable along the centre line (8a).

4. Corner jointing machine according to Claim 3, characterized in that the control slide (24) is symmetrical to the centre line (8a).

5. Corner jointing machine according to any one of Claims 1 to 4, characterized by four heads (14) for simultaneously connecting the frame corners to the corner connectors (1) arranged in respective corners.

6. Corner jointing machine according to Claim 5, characterized in that the heads (14) are arranged side by side and one above the other and the frame has a slightly inclined supine position.

7. Corner jointing machine according to Claim 6, characterized in that a left-hand lower head (14.1) of the heads is mounted in a fixed position, a head (14.2) arranged above it can be adjusted and positioned perpendicularly thereto, a right-hand lower head (14.4) can be adjusted and locked horizontally relative to the head (14.1), whereas a remaining head (14.3) can be adjusted both horizontally and vertically.

8. Corner jointing machine according to any one of Claims 1 to 7, characterized in that, depending on the probe position, all punching dimensions (R) and the position of the rest (10) relative to the punches (5) can be selected and positioned electronically.

9. Corner jointing machine according to Claim 1, characterized in that the drive units (23) are infinitely variable in the direction of their own effective axis (7).

10. Corner jointing machine according to Claim 1, characterized in that the rest (10) for the frame corner has roller supports (34), on which the profiles (2) are supported.

11. Corner jointing machine according to Claim 10, characterized in that the roller supports (34) are in alignment with probe surfaces of the probe (15).

12. Corner jointing machine according to Claim 11, characterized in that the roller supports (34) have an elastic abutment.

13. Corner jointing machine according to Claim 3, characterized in that an adhesive-injection device (37) is fastened to the control slide (24), a nozzle tip (36) of which adhesive-injection device (37) is insertable into an injection hole (35), provided in the frame corner, for the adhesive.

14. Corner jointing machine according to Claim 13, characterized in that an injection hole (35) is provided in a frame corner in each chamber wall in which a corner connector (1) is arranged, and in that the injection holes (35) are arranged on a line parallel to the mitre line lying in the mitre plane (8).