An exhaust valve plate welding positioning tool

Abstract

The utility model discloses a kind of suction and exhaust valve plate welding positioning tool, including valve plate, the upper surface of the valve plate is provided with annular groove, the inner wall of the annular groove is provided with air hole, the upper surface of the valve plate is provided with recess, the upper surface of the valve plate is provided with first valve tongue, the lower surface of the first valve tongue is fixedly connected with convex point;The upper surface of the valve plate is provided with inclined groove, the upper surface of the valve plate is provided with second valve tongue, one end of the second valve tongue is fixedly connected with bending inclined piece, this suction and exhaust valve plate welding positioning tool, improved welding positioning tool has two kinds, these two kinds of welding tool are positioned welding using the positioning structure set on valve plate, first kind utilizes recess, first valve tongue and convex point, two recesses are set on valve plate, two convex points are fixed on first valve tongue, recess and convex point correspond, press into recess by convex point, first valve tongue is accurately positioned to welding position, valve plate and first valve tongue are welded into valve plate assembly.

Description

Technical Field

[0001] This utility model relates to the field of suction and exhaust valve plate welding technology, and in particular to a welding positioning tool for suction and exhaust valve plates. Background Technology

[0002] The intake valve plate, exhaust valve plate, and valve plate constitute the one-way valve structure of the compressor during intake and exhaust. Specifically, during intake, the exhaust valve plate closes the exhaust port of the valve plate, and during exhaust, the intake valve plate closes the intake port. To simplify the process and reduce costs, the following measures were adopted... Figure 4 The measures are as follows:

[0003] 1. The exhaust valve plate is positioned and welded to the valve plate through the mounting holes to form an assembly, which is used directly during assembly;

[0004] 2. Since the valve tongue is the actual function of the exhaust valve plate, the process is simplified from 1 to welding the exhaust valve tongue onto the valve plate. This welding requires first fixing the welding fixture through the valve plate mounting holes, then using the welding fixture to position the valve tongue, and finally welding it into an assembly.

[0005] However, the demand for existing valve plate assemblies is large, and the problems with the existing welding methods are becoming increasingly prominent:

[0006] 1. The welding positioning method is complex, inefficient, and has low output, which cannot meet the product production requirements;

[0007] 2. The valve tongue welding requires repeated positioning, which affects the welding accuracy. If the valve tongue welding position is not up to standard, it will cause air leakage during the back pressure test, resulting in a high failure rate and low product production efficiency. Utility Model Content

[0008] The main purpose of this utility model is to provide a welding and positioning fixture for intake and exhaust valve plates, which can effectively solve the problems in the background art.

[0009] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0010] A welding and positioning fixture for intake and exhaust valve plates includes a valve plate, an annular groove on the upper surface of the valve plate, an air hole on the inner wall of the annular groove, a groove on the upper surface of the valve plate, a first valve tongue on the upper surface of the valve plate, and a protrusion fixedly connected to the lower surface of the first valve tongue.

[0011] The upper surface of the valve plate is provided with an inclined groove, and a second valve tongue is provided on the upper surface of the valve plate. One end of the second valve tongue is fixedly connected to a bent inclined plate.

[0012] In order to ensure that the valve plate and valve tongue can work normally under various working conditions and extend their service life, as a welding and positioning tooling for intake and exhaust valve plates of this utility model, the upper surface of the valve plate is provided with four mounting holes. The upper surface of the valve plate is provided with a first through hole, a second through hole and a third through hole from left to right. The valve plate, the first valve tongue and the second valve tongue are all made of chromium-nickel stainless steel.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. This intake and exhaust valve plate welding positioning fixture, through the setting of valve plate, annular groove, air hole, groove, first valve tongue and protrusion, has two improved welding positioning fixtures. Both welding fixtures use a positioning structure set on the valve plate for positioning welding. The first type uses groove, first valve tongue and protrusion. Two grooves are opened on the valve plate, and two protrusions are fixed on the first valve tongue. The grooves and protrusions correspond. When the protrusions are pressed into the grooves, the first valve tongue is accurately positioned in the welding position. The valve plate and the first valve tongue are welded into the valve plate assembly. Thus, the welding positioning method of this fixture is simple and efficient, improves the welding qualification rate, increases the production of valve plate assemblies, and has significant effects.

[0015] 2. This improved welding positioning fixture for intake and exhaust valve plates, through the setting of valve plate, annular groove, air hole, inclined groove, second valve tongue, and bent inclined plate, has two types. Both types of welding fixtures use a positioning structure set on the valve plate for positioning welding. The second type utilizes the inclined groove, second valve tongue, and bent inclined plate. An inclined groove is opened on the valve plate, and the tail end of the second valve tongue is bent into a bent inclined plate. The inclined groove and the bent inclined plate correspond. When the bent inclined plate is placed in the inclined groove, the second valve tongue is accurately positioned in the welding position. The valve plate and the second valve tongue are welded into a valve plate assembly. Therefore, compared with the existing welding fixture, the welding positioning accuracy is higher, the failure rate of the one-time back pressure test is greatly reduced, the production cycle of the assembly line is improved, and the compressor output is increased. Attached Figure Description

[0016] Figure 1 This is an isometric structural diagram of the first form of a welding positioning fixture for intake and exhaust valve plates according to an embodiment of the present invention;

[0017] Figure 2 This is an isometric structural diagram of the second form of a welding positioning fixture for intake and exhaust valve plates according to an embodiment of the present invention;

[0018] Figure 3 This is an isometric structural diagram of the third form of a welding positioning fixture for intake and exhaust valve plates according to an embodiment of the present invention;

[0019] Figure 4 This is a schematic diagram of the isometric structure of an existing welding positioning fixture.

[0020] In the diagram: 1. Valve plate; 2. Annular groove; 3. Air hole; 4. Groove; 5. First valve tongue; 6. Protrusion; 7. Inclined groove; 8. Second valve tongue; 9. Bending oblique plate; 10. Mounting hole; 11. First through hole; 12. Second through hole; 13. Third through hole. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Example 1

[0023] like Figure 1-4 As shown, a welding and positioning fixture for intake and exhaust valve plates includes a valve plate 1, an annular groove 2 is provided on the upper surface of the valve plate 1, an air hole 3 is provided on the inner wall of the annular groove 2, a groove 4 is provided on the upper surface of the valve plate 1, a first valve tongue 5 is provided on the upper surface of the valve plate 1, and a protrusion 6 is fixedly connected to the lower surface of the first valve tongue 5.

[0024] The upper surface of the valve plate 1 is provided with a slanted groove 7, and the upper surface of the valve plate 1 is provided with a second valve tongue 8. One end of the second valve tongue 8 is fixedly connected with a bent slanted piece 9.

[0025] In practical use, the improved welding positioning fixture has two types, based on the configuration of valve plate 1, annular groove 2, air hole 3, groove 4, first valve tongue 5, protrusion 6, inclined groove 7, second valve tongue 8, and bent inclined plate 9. Both types of welding fixtures use a positioning structure on valve plate 1 for positioning welding. The first type utilizes groove 4, first valve tongue 5, and protrusion 6. Two grooves 4 are opened on valve plate 1, and two protrusions 6 are fixed on first valve tongue 5. The grooves 4 and protrusions 6 correspond to each other. By pressing the protrusions 6 into the grooves 4, the first valve tongue 5 is precisely positioned in the welding position, and valve plate 1 and first valve tongue 5 are welded into valve plate 1 assembly; The second type... This invention utilizes a slanted groove 7, a second valve tongue 8, and a bent oblique plate 9. A slanted groove 7 is opened on the valve plate 1, and the tail end of the second valve tongue 8 is bent into a bent oblique plate 9. The slanted groove 7 and the bent oblique plate 9 correspond to each other. The bent oblique plate 9 is placed into the slanted groove 7, which accurately positions the second valve tongue 8 to the welding position. The valve plate 1 and the second valve tongue 8 are then welded into the valve plate 1 assembly. This makes the welding positioning method of this tooling simple and efficient, improves the welding qualification rate, increases the output of the valve plate 1 assembly, and has significant effects. Compared with existing welding tooling, the welding positioning accuracy is higher, the failure rate of the one-time back pressure test is greatly reduced, the production cycle of the assembly line is improved, and the compressor output is increased.

[0026] In this embodiment, the upper surface of the valve plate 1 is provided with four mounting holes 10. The upper surface of the valve plate 1 is provided with a first through hole 11, a second through hole 12 and a third through hole 13 from left to right. The valve plate 1, the first valve tongue 5 and the second valve tongue 8 are all made of chromium-nickel stainless steel.

[0027] In practical use, the use of chromium-nickel stainless steel for valve plate 1 and valve tongue ensures that valve plate 1 and valve tongue can work normally under various working conditions and extend their service life.

[0028] Working principle: There are two types of improved welding positioning fixtures. Both types of welding fixtures use a positioning structure on the valve plate 1 for positioning welding. The first type uses a groove 4, a first valve tongue 5, and a protrusion 6. Two grooves 4 are made on the valve plate 1, and two protrusions 6 are fixed on the first valve tongue 5. The grooves 4 and protrusions 6 correspond to each other. When the protrusions 6 are pressed into the grooves 4, the first valve tongue 5 is precisely positioned in the welding position, and the valve plate 1 and the first valve tongue 5 are welded into the valve plate 1 assembly. The second type uses a slanted groove 7, a second valve tongue 8, and a bent slanted piece 9. A slanted groove 7 is made on the valve plate 1, and the tail end of the second valve tongue 8 is bent into a bent slanted piece 9. The slanted groove 7 and the bent slanted piece 9 correspond to each other. When the bent slanted piece 9 is placed into the slanted groove 7, the second valve tongue 8 is precisely positioned in the welding position, and the valve plate 1 and the second valve tongue 8 are welded into the valve plate 1 assembly.

[0029] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A welding and positioning fixture for a suction / exhaust valve plate, comprising a valve plate (1), characterized in that: The valve plate (1) has an annular groove (2) on its upper surface, and an air hole (3) is provided on the inner wall of the annular groove (2). The valve plate (1) has a groove (4) on its upper surface, and a first valve tongue (5) is provided on its upper surface. A protrusion (6) is fixedly connected to the lower surface of the first valve tongue (5). The upper surface of the valve plate (1) is provided with a slanted groove (7), and the upper surface of the valve plate (1) is provided with a second valve tongue (8), and one end of the second valve tongue (8) is fixedly connected with a bent slanted piece (9).

2. The welding and positioning fixture for intake and exhaust valve plates according to claim 1, characterized in that: The valve plate (1) has four mounting holes (10) on its upper surface.

3. The welding and positioning fixture for intake and exhaust valve plates according to claim 1, characterized in that: The upper surface of the valve plate (1) is provided with a first through hole (11), a second through hole (12) and a third through hole (13) from left to right.

4. The welding and positioning fixture for a suction / exhaust valve plate according to claim 1, characterized in that: The valve plate (1), the first valve tongue (5), and the second valve tongue (8) are all made of chromium-nickel stainless steel.

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