Exchangeable jaw for pressing tool

• US 11,117,247 B2
• Filed: 11/21/2018
• Issued: 09/14/2021
• Est. Priority Date: 11/23/2017
• Status: Active Grant

• Current Assignee: Viega Technology GmbH & Co., KG
• Original Assignee: Viega Technology GmbH & Co., KG
• Inventors: Rischen, Christian, Faulstich, Markus
• Primary Examiner(s): Wilson, Lee D
• Assistant Examiner(s): Saenz, Alberto
• Application Number:
  US16/197,702
• Publication Number:
  US 20190152032A1
• Time in Patent Office: 1,028 Days
• Field of Search: 29235, 29237, 29238, 29239, 29257, 29268, 29271, 29278
• CPC Class Codes: B21D 37/04 Movable or exchangeable mountings for tools
• CPC Class Codes: B21D 39/046 Connecting tubes to tube-like fittings
• CPC Class Codes: B21D 39/048 using presses for radially crimping tubular elements
• CPC Class Codes: B25B 27/10 inserting fittings into hoses
• CPC Class Codes: F16L 33/02 Hose-clips

Abstract

The disclosure relates to an attachment for a base jaw of a pressing tool for pressing fittings in order to produce pipe connections, comprising an attachment body, a pressing section, formed on the attachment body, to form half of a jaw opening, and comprising a connecting section, formed on the attachment body, for a connection to the base jaw. The technical problem of providing attachments for exchangeable jaws, base jaws and systems which allow an improved use for fittings of different nominal widths is solved in that the pressing section and the connecting section are arranged at a distance from one another. The invention also relates to a base jaw and to a system consisting of at least two pairs of attachments and one pair of base jaws.

Claims

1. An attachment for a base jaw of a pressing tool for pressing fittings to produce pipe connections, comprising:

an attachment body;

a pressing section, formed on the attachment body, to form half a jaw opening; and

a connection section formed on the attachment body, to connect to the base jaw,

wherein the attachment body is formed as a distal section of the base jaw,

the pressing section and the connection section are arranged at a distance from one another, and

the connection section of the attachment engages a connection section formed on the base jaw by rotational movement of the attachment with respect to the base jaw to thereby provide a form-fitting, twist-proof and releasable connection to the base jaw.

2. The attachment according to claim 1, wherein the pressing section is formed integrally or in an integrated manner with the attachment body.

3. The attachment according to claim 1, wherein a pressing surface of the pressing section corresponds to a nominal value of an external diameter of a fitting.

4. The attachment according to claim 1, wherein the connection section of the attachment forms a substantially planar interface, at least in sections, with the base jaw.

5. The attachment according to claim 1, wherein the connection section of the attachment has a cavity for receiving a pin, formed on the base jaw, or the connection section of the attachment body has a pin.

6. The attachment according to claim 1, wherein the connection section of the attachment has an undercut positioning element comprising an abutment surface that contacts a corresponding abutment surface of the connection section of the base jaw and a limiting element comprising an abutment surface that contacts a corresponding abutment surface of the connection section of the base jaw.

7. The attachment according to claim 1, further comprising a fixing arrangement provided for fixing the attachment to the base jaw in a releasable manner in an engaged position.

8. A base jaw of a pressing tool for pressing fittings to produce pipe connections, comprising:

a base jaw body;

an articulated seat for a connection to a further base jaw; and

an interaction section for interaction with a pressing tool,

wherein a connection section is formed for a connection to an attachment according to claim 1, and

the connection section is formed in a complementary manner to the connection section of the attachment.

9. A system for pressing fittings to produce pipe connections, comprising:

at least two pairs of attachments according to claim 1; and

one pair of base jaws, wherein the base jaw comprises;

a base jaw body;

an articulated seat for a connection to a further base jaw; and

an interaction section for interaction with a pressing tool,

wherein a connection section is formed for a connection to said attachment, and

the connection section is formed in a complementary manner to the connection section of the attachment,

wherein different pairs of attachments have pressing sections for jaw openings of different nominal widths, and

wherein the pairs of attachments have identical connecting sections.

10. The system according to claim 9, wherein the attachments of different pairs of attachments have an overall size and outer contour configured to the nominal width of the jaw openings to be formed.

11. The attachment according to claim 5, wherein the pin and the cavity are cylindrical.

12. The attachment according to claim 6, wherein the abutment surface of the undercut positioning element and the abutment surface of the limiting element face in opposite directions.

13. The base jaw of claim 8, wherein the connection section of the base jaw has an undercut positioning element comprising an abutment surface that contacts a corresponding abutment surface of the connection section of the attachment and a limiting element comprising an abutment surface that contacts a corresponding abutment surface of the connection section of the attachment.

14. The system of claim 9, wherein the system further comprises a fixing arrangement for releasably fixing the base jaw to the attachment in an engaged position, the fixing arrangement comprising a swivelable lever attached to the base jaw and a recess in the attachment for receiving the swivelable lever.

15. The system of claim 9, wherein the connection section of the base jaw has an undercut positioning element comprising an abutment surface that contacts a corresponding abutment surface of an undercut positioning element of the connection section of the attachment and a limiting element comprising an abutment surface that contacts a corresponding abutment surface of a limiting element of the connection section of the attachment.