A ceramic nozzle for plasma welding gun

Abstract

The utility model relates to a plasma welding gun ceramic nozzle in the field of ion welding gun technology, wherein the outer side of the spray barrel is sprayed with a ceramic layer for preventing molten powder from adhering to the spray barrel, the bottom end of the spray barrel is fixedly installed with a mounting plate for threadedly connecting a threaded pipe with a welding gun, and the top end of the spray barrel is provided with a nozzle for welding a workpiece; the bottom end of the spiral strip is fixedly installed with a mounting assembly for fixing the spiral strip. The outer side of the spray barrel is sprayed with a ceramic layer for preventing molten powder from adhering to the spray barrel, and the copper nozzle body that is originally easy to adhere is isolated from the molten powder generated during cladding, thereby avoiding adhesion; when the spiral strip needs to be installed to the threaded pipe and the spray barrel, the two positioning blocks on the mounting block can be inserted into the positioning groove, so that the mounting block can be quickly installed in the threaded pipe, and then the mounting block can be fixed by bolts penetrating the fixing block and the bottom of the fixing groove.

Description

Technical Field

[0001] The utility model relates to the technical field of plasma welding guns, in particular to a ceramic nozzle of a plasma welding gun. Background Art

[0002] Plasma welding is a welding method that uses a plasma arc as a heat source, so a plasma welding gun is used to weld the workpiece, wherein the gun head of the plasma welding gun is provided with a copper nozzle, and the existing welding gun nozzle is easy to adhere to the molten powder produced during cladding when working. For example, as shown in the nozzle for a plasma welding gun with Chinese patent application number CN201620796016.2, a water-cooling chamber for passing cooling water is provided on the nozzle wall around the nozzle working channel, and the water-cooling chamber extends toward the outlet end; and at least two partition ribs are provided in the water-cooling chamber, and the two partition ribs are symmetrically arranged with the axial direction of the nozzle as the reference; each partition rib extends on both sides of the nozzle radial direction and is connected to the water-cooling chamber wall, dividing the water-cooling chamber on the inlet end side, and a space is left between the edge of the partition rib facing the outlet end and the water-cooling chamber wall to form a cooling water flow channel.

[0003] However, since the plasma torch nozzle is made of copper, the copper nozzle and molten powder generated during cladding are easily adhered to the copper nozzle, causing clogging of the nozzle. Utility Model Content

[0004] In order to solve the problem raised in the above background technology that the nozzle for the plasma welding gun is made of copper, the copper nozzle and the molten powder generated during cladding are easily adhered to the copper nozzle, thereby causing the nozzle to be blocked, the utility model provides the following technical solutions:

[0005] A ceramic nozzle for a plasma welding gun comprises a threaded tube threadably connected to the welding gun, a nozzle body for welding a workpiece is arranged at the top of the threaded tube, and an anti-blocking device for preventing the nozzle body from being blocked is arranged in the nozzle body.

[0006] The nozzle body comprises a spray barrel for welding workpieces, and a ceramic layer for preventing molten powder from adhering to the spray barrel is sprayed on the outer side of the spray barrel.

[0007] The anti-blocking device comprises a spiral strip arranged in the nozzle body for generating a spiral arc, and a mounting assembly for fixing the spiral strip is fixedly mounted at the bottom end of the spiral strip.

[0008] Furthermore, a mounting plate for threadedly connecting the threaded pipe to the welding gun is fixedly mounted at the bottom end of the spray barrel, and a nozzle for welding the workpiece is provided at the top end of the spray barrel.

[0009] Furthermore, a positioning groove for positioning and installing the installation component is opened in the tube cavity of the threaded tube, and there are two positioning grooves, which are symmetrically distributed on the inner wall of the threaded tube in front and back.

[0010] Furthermore, a fixing groove for fixing and installing the installation component is provided in the tube cavity of the threaded tube, and there are two fixing grooves, which are symmetrically distributed on the inner wall of the threaded tube.

[0011] Furthermore, the installation assembly comprises a mounting block which is arranged in the threaded tube and is used to fix the spiral strip, and a through hole which is used to communicate with the nozzle is opened in the middle of the block body of the mounting block.

[0012] Furthermore, a positioning block for inserting into the positioning groove is fixedly mounted on the body of the mounting block, and there are two positioning blocks, which are symmetrically distributed on the body of the mounting block.

[0013] Furthermore, a fixing block for inserting into the fixing groove is fixedly mounted on the block body of the mounting block, and there are two fixing blocks, which are symmetrically distributed on the block body of the mounting block in a front-to-back manner.

[0014] Furthermore, the plate body of the mounting plate is provided with threaded holes for fixing the mounting plate, and there are three threaded holes, which are distributed in a circular array at the top of the mounting plate.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] By setting a ceramic layer and an anti-blocking device, a ceramic layer is sprayed on the outside of the spray barrel to prevent the molten powder from sticking to the spray barrel, isolating the copper nozzle body that is originally easy to stick from the molten powder generated during cladding, thereby avoiding adhesion. Because the nozzle body base material is copper, it does not affect the conductive function of the non-transferred arc. When the spiral strip needs to be installed on the threaded pipe and the spray barrel, the two positioning blocks on the mounting block can be inserted into the positioning groove, and the mounting block can be quickly installed in the threaded pipe, and then the bolts are passed through the fixing block and the bottom of the fixing groove to thread the fixing block, so that the fixing block can be fixed. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0018] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 This is a cross-sectional view of the nozzle body of the utility model;

[0021] Figure 3 This is a front view cross-sectional view of the nozzle body of the utility model;

[0022] Figure 4 This is a schematic diagram of the structure of the anti-blocking device of the utility model;

[0023] Figure 5 This is a schematic diagram of the installation component structure of the utility model.

[0024] In the accompanying drawings, the names of the components represented by the reference numerals are listed as follows:

[0025] 100-nozzle body, 101-spray barrel, 102-mounting plate, 103-ceramic layer, 104-nozzle;

[0026] 200-threaded pipe, 201-positioning groove, 202-fixing groove;

[0027] 300-anti-blocking device, 310-installation assembly, 311-installation block, 312-positioning block, 313-fixing block, 314-through hole, 320-spiral strip;

[0028] 001-Threaded hole. DETAILED DESCRIPTION

[0029] The preferred specific implementation methods for implementing the present utility model are described in detail below, and a clear and complete description is made in conjunction with the accompanying drawings.

[0030] See also Figure 1-Figure 5 The utility model provides a ceramic nozzle for a plasma welding gun.

[0031] It comprises a threaded tube 200 threadably connected to the welding gun, a nozzle body 100 for welding a workpiece is arranged at the top of the threaded tube 200, and an anti-blocking device 300 for preventing the nozzle body 100 from being blocked is arranged inside the nozzle body 100.

[0032] The nozzle body 100 includes a nozzle 101 for welding a workpiece. A ceramic layer 103 is sprayed on the outside of the nozzle 101 to prevent the molten powder from adhering to the nozzle 101, thereby isolating the copper nozzle body 100, which is easy to adhere, from the molten powder generated during cladding, thereby avoiding adhesion. Since the base material of the nozzle body 100 is copper, it does not affect the conductive function of the non-transferred arc.

[0033] A mounting plate 102 for threadedly connecting the threaded pipe 200 to the welding gun is fixedly installed at the bottom end of the spray barrel 101. The mounting plate 102 is provided with threaded holes 001 for fixing the mounting plate 102, and there are three threaded holes 001, which are distributed in a circular array at the top end of the mounting plate 102, so that the mounting plate 102 can be quickly connected to the welding gun by means of threaded connection between bolts and the threaded holes 001; a nozzle 104 for welding the workpiece is provided at the top end of the spray barrel 101.

[0034] A positioning groove 201 for positioning and installing the installation component 310 is opened in the tube cavity of the threaded tube 200, and there are two positioning grooves 201, and the two positioning grooves 201 are symmetrically distributed on the inner wall of the threaded tube 200 in the front and back; so as to facilitate the rapid installation of the installation component 310 into the threaded tube 200; a fixing groove 202 for fixing and installing the installation component 310 is opened in the tube cavity of the threaded tube 200, and there are two fixing grooves 202, and the two fixing grooves 202 are symmetrically distributed on the inner wall of the threaded tube 200 in the left and right.

[0035] The anti-clogging device 300 includes a spiral bar 320 arranged in the nozzle body 100 for generating a spiral arc, so that the arc generated from the nozzle 104 is spiral, so as to prevent the molten powder from entering the spray barrel 101 through the nozzle 104 and causing the spray barrel 101 to be blocked; the bottom end of the spiral bar 320 is fixedly installed with an installation component 310 for fixing the spiral bar 320.

[0036] The mounting assembly 310 includes a mounting block 311 disposed in the threaded tube 200 for fixing the spiral strip 320. A through hole 314 communicating with the nozzle 104 is provided in the middle of the mounting block 311, so that the plasma arc generated by the welding gun can weld the workpiece through the through hole 314 and the nozzle 104 as a heat source.

[0037] A positioning block 312 for inserting into the positioning groove 201 is fixedly installed on the body of the mounting block 311, and there are two positioning blocks 312, which are symmetrically distributed on the body of the mounting block 311; a fixing block 313 for inserting into the fixing groove 202 is fixedly installed on the body of the mounting block 311, and there are two fixing blocks 313, which are symmetrically distributed on the body of the mounting block 311 front and back; therefore, when it is necessary to install the spiral strip 320 to the threaded pipe 200 and the spray gun 101, the two positioning blocks 312 on the mounting block 311 can be inserted into the positioning groove 202, so that the mounting block 311 can be quickly installed in the threaded pipe 200, and then the fixing block 311 is threadedly connected to the bottom of the fixing groove 202 by bolts penetrating the fixing block 311, so that the mounting block 311 can be fixed.

[0038] Based on the above content and the accompanying drawings, those skilled in the art can understand and implement the utility model. In addition, any non-creative modifications made to the utility model by those skilled in the art without making creative work still fall within the scope of protection of the utility model.

Claims

1. A plasma welding gun ceramic nozzle, comprising a threaded tube (200) threadedly connected to a plasma welding gun nozzle, characterized in that: A nozzle body (100) for welding a workpiece is disposed at the top end of the threaded tube (200), and an anti-blocking device (300) for preventing the nozzle body (100) from being blocked is disposed inside the nozzle body (100); The nozzle body (100) comprises a spray barrel (101) for welding a workpiece, and a ceramic layer (103) for preventing molten powder from adhering to the spray barrel (101) is sprayed on the outer side of the spray barrel (101); The anti-blocking device (300) comprises a spiral strip (320) arranged in the nozzle body (100) for generating a spiral arc, and a mounting assembly (310) for fixing the spiral strip (320) is fixedly mounted at the bottom end of the spiral strip (320).

2. A plasma welding gun ceramic nozzle according to claim 1, characterized in that: A mounting plate (102) for threadedly connecting a threaded pipe (200) to a welding gun is fixedly mounted at the bottom end of the spray barrel (101), and a nozzle (104) for welding a workpiece is provided at the top end of the spray barrel (101).

3. A plasma welding gun ceramic nozzle according to claim 2, characterized in that: A positioning groove (201) for positioning and installing the installation component (310) is provided in the tube cavity of the threaded tube (200), and there are two positioning grooves (201), which are symmetrically distributed front and back on the inner wall of the threaded tube (200).

4. A plasma welding gun ceramic nozzle according to claim 3, characterized in that: A fixing groove (202) for fixing and installing the installation component (310) is provided in the tube cavity of the threaded tube (200), and there are two fixing grooves (202), which are symmetrically distributed on the inner wall of the threaded tube (200).

5. The ceramic nozzle for a plasma welding gun according to claim 3, characterized in that: The mounting assembly (310) comprises a mounting block (311) arranged in the threaded tube (200) for fixing the spiral strip (320), and a through hole (314) for communicating with the nozzle (104) is provided in the middle of the mounting block (311).

6. A plasma welding gun ceramic nozzle according to claim 5, characterized in that: A positioning block (312) for inserting into the positioning groove (201) is fixedly mounted on the body of the mounting block (311), and there are two positioning blocks (312), which are symmetrically distributed on the body of the mounting block (311).

7. A plasma welding gun ceramic nozzle according to claim 6, characterized in that: A fixing block (313) for inserting into the fixing groove (202) is fixedly mounted on the body of the mounting block (311), and there are two fixing blocks (313), which are symmetrically distributed front and back on the body of the mounting block (311).

8. The ceramic nozzle for a plasma welding gun according to claim 2, characterized in that: The plate body of the mounting plate (102) is provided with threaded holes (001) for fixing the mounting plate (102), and there are three threaded holes (001), which are distributed in a circular array at the top of the mounting plate (102).

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