Method and a device for cutting a tub

• US 5,026,966 A
• Filed: 12/21/1989
• Issued: 06/25/1991
• Est. Priority Date: 12/24/1988
• Status: Expired due to Fees

• Current Assignee: Roth Werke GmbH
• Original Assignee: Roth Werke GmbH
• Inventors: Roth, Manfred
• Primary Examiner(s): ALBRITTON, CLARENCE
• Application Number:
  US07/456,111
• Time in Patent Office: 551 Days
• Field of Search: 219/121.78, 219/121.79, 219/121.67, 219/121.72, 219/121.82, 219/121.6, 219/121.85, 219/121.39, 219/121.44
• US Class Current: 219/121.72
• CPC Class Codes: A47K 3/04 Built-in baths A47K3/16 takes precedence
• CPC Class Codes: B23K 10/00 Welding or cutting by means of a plasma
• CPC Class Codes: B23K 26/10 using a fixed support , i.e. involving moving the laser beam
• CPC Class Codes: B23K 26/364 for making a groove or trench, e.g. for scribing a break initiation groove
• CPC Class Codes: B23K 37/0217 the guide member being fixed to the workpiece

Abstract

The invention relates to a method and a device for cutting a tub. To optimize the construction of the cutting line and to increase the cutting speed, the invention provides that a cutting device is supported on a carriage movable along a guide rail. The guide rail can be mounted on a tub to be cut up. The carriage has a drive and makes it possible to move the cutting device in an exact manner with the greatest possible advancing speed.

Claims

1. A method for cutting up or rather trimming tubs, in particular bath tubs or shower tubs, wherein the tubs are cut by means of a vibration-free cutting method, in particular by a plasma-cutting or laser-cutting method.

2. The method according to claim 1, wherein a cutting device is moved by means of a drive along a guide rail aligned with respect to the tub.

3. A device for cutting of tubs, comprising a cutting device, the cutting device including pivotal mounting means for pivotally mounting the cutting device on a carriage guided on at least one guide rail mounted on the tub, the guide rail including fastening means for releasably fastening the guide rail to the tub, the guide rail further including first adjustment means for facilitating an adjustment of the length of the guide rail, the pivotal mounting means including an arm pivotal about a vertical axis and a second adjustment means for facilitating an adjustment of the length of the arm, and the cutting device being provided at the end of the arm remote from the pivotal mounting means.

4. The device according to claim 3, wherein a drive means is provided on the carriage for propelling the carriage along the guide rail.

5. The device according to claim 3, wherein the pivotal mounting means includes means enabling the arm to be moved about an angle of traverse of 360°

.

6. The device according to claim 3, wherein the fastening means includes suction cup means.

7. The device according to claim 6, wherein the first adjustment means includes means facilitating a movement of the suction cup means relative to the guide rail to adjust to the respective dimension of the tub.

8. The device according to claim 3, wherein the guide rail includes multiple components and wherein the first adjustment means includes a telescopelike connection between the components to facilitate the aforesaid adjustment of the length.

9. The device according to claim 3, wherein the cutting device is designed in the form of a plasma-cutting device.

10. The device according to claim 9, wherein said cutting device includes a burner head and a heat protective shield supported on the burner head, which shield in the mounted state is operatively connected to a safety switch to operate the cutting device.

11. The device according to claim 10, wherein the burner head and/or the heat protective shield are covered by a screen.

12. The device according to claim 9, wherein a flow pressure of 2 to 4 bar is set for said cutting device.

13. The device according to claim 9, wherein the cutting device has a power-supply compensation device to connect to a 220 volt-amp. supply.

14. The device according to claim 9, wherein the cutting device has a high-frequency device permitting a free ignition of the arc to assure an easier penetration into the enamel of the tub.

15. The device according to claim 3, wherein the second adjustment means includes plural joints for facilitating an adjusting of the cutting device in all spatial axes such that the cutting device is always aligned to move parallel with respect to the surface to be cut.

16. The device according to claim 3, wherein the arm includes means defining plural fastening points for facilitating a selective fastening of the arm to the carriage.

17. The device according to claim 16, wherein each fastening point supports the arm for pivotal movement on the carriage.

18. The device according to claim 3, wherein the arm has two parts and wherein the second adjustment means includes means for telescopically connecting the arms to one another and a setscrew for fixing the telescopically related arms to one another.

19. The device according to claim 18, wherein the parts are designed rotatably relative to one another.

20. The device according to claim 18, wherein a sleeve is fastened to the end of one of the parts of the arm transversely with respect to the axis of said one part, which sleeve receives a further part of the arm.

21. The device according to claim 20, wherein the further arm part is movable in a bore of the sleeve and can be fixed therein by means of a screw.

22. The device according to claim 20, wherein a further sleeve is fastened freely pivotally movably on the further arm part, which further sleeve has a bore receiving a mounting device for the cutting device.

23. The device according to claim 22, wherein the mounting device and thus the cutting device are movably arranged in the further sleeve and can be fixed therein by means of a screw.

24. The device according to claim 22, wherein the further sleeve receives in said bore thereof a pipe of the mounting device.