Welding fixture for exhaust protective cover

Abstract

The utility model discloses a welding fixture for an exhaust protective cover. The welding fixture comprises a lower die holder; the die is characterized in that two guide columns are arranged on the top end face of the lower die base, a protective cover limiting groove is formed between the two guide columns, an exhaust pipe limiting groove is formed in one side of the protective cover limiting groove, a cushion block is arranged in the protective cover limiting groove, and the exhaust pipe limiting groove is arranged in the cushion block. The upper portion of the lower die base is connected with an upper die base through a plurality of screws, wherein the guide columns are sleeved with the upper die base. The exhaust protective cover welding clamp is reasonable in structural design, the protective cover limiting groove and the exhaust pipe limiting groove are formed in the lower die base, parts can be effectively fixed and prevented from deforming, protective gas is introduced into the limiting grooves during welding, and welding operation can be carried out after gas flow is stable; the welding clamp can effectively fix parts, meanwhile can protect welding seams, and meets production requirements.

Description

Technical Field

[0001] The utility model relates to a welding fixture for an exhaust protection cover. Background Art

[0002] The exhaust protection cover is generally composed of a shell and an exhaust pipe, and the shell and the exhaust pipe are generally made of stainless steel. The assembly of the shell and the exhaust pipe is welded using argon arc welding technology. Since the shell and the exhaust pipe are heterogeneous structures, specific welding fixtures are required for fixing and protecting them to ensure the welding quality. Utility Model Content

[0003] The utility model overcomes the shortcomings of the prior art and provides an exhaust protection cover welding fixture.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: an exhaust protection cover welding fixture, comprising:

[0005] Lower die seat;

[0006] The invention is characterized in that: two guide pillars are provided on the top surface of the lower die base, a protective cover limiting groove is provided between the two guide pillars, an exhaust pipe limiting groove is provided on one side of the protective cover limiting groove, a pad is placed inside the protective cover limiting groove, and an upper die base sleeved on the guide pillars is connected above the lower die base by a plurality of screws.

[0007] In the above structure, a plurality of first hanging rings are provided on both left and right end surfaces of the lower die base.

[0008] In the above structure, a plurality of second hanging rings are provided on both left and right end surfaces of the upper die seat.

[0009] In the above structure, a notch corresponding to the exhaust pipe limiting groove is provided on the top end surface of the upper die seat.

[0010] In the above structure, cylindrical pins are provided on the top end surface of the upper die seat near the left and right ends, and the bottom ends of the cylindrical pins are flush with the bottom end surface of the upper die seat.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows: the exhaust protection cover welding fixture of the utility model has a reasonable structural design, and the protection cover limiting groove and the exhaust pipe limiting groove are arranged on the lower die base, which can effectively fix the parts and prevent the parts from deformation. During welding, protective gas is introduced into the limiting groove, and welding operation can be carried out after the airflow is stable; the welding fixture can effectively fix the parts and protect the weld at the same time to meet the production needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1It is a schematic diagram of the exploded structure of an exhaust protection cover welding fixture according to an embodiment of the utility model;

[0013] Figure 2 This is an assembly diagram of an exhaust protection cover welding fixture described in an embodiment of the utility model;

[0014] Figure 3 It is a cross-sectional view of an exhaust protection cover welding fixture according to an embodiment of the utility model;

[0015] Figure 4 It is a reference diagram of the use status of an exhaust protection cover welding fixture described in an embodiment of the utility model.

[0016] In the figure:

[0017] 1. Lower die base; 2. Guide pillar; 3. Limiting groove for protective cover; 4. Limiting groove for exhaust pipe; 5. Spacer; 6. Screw; 7. Upper die base; 8. First lifting ring; 9. Second lifting ring; 10. Notch; 11. Cylindrical pin; 12. Protective cover; 13. Exhaust pipe. DETAILED DESCRIPTION

[0018] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0019] like Figure 1-3 As shown, an exhaust protection cover welding fixture comprises:

[0020] Lower die base 1;

[0021] It is characterized in that: two guide pillars 2 are provided on the top surface of the lower die base 1, a protective cover limiting groove 3 is provided between the two guide pillars 2, an exhaust pipe limiting groove 4 is provided on one side of the protective cover limiting groove 3, a cushion block 5 is placed inside the protective cover limiting groove 3, and an upper die base 7 sleeved on the guide pillar 2 is connected above the lower die base 1 through a plurality of screws 6.

[0022] In the above structure, a plurality of first hanging rings 8 are provided on both left and right end surfaces of the lower die base 1 .

[0023] In the above structure, a plurality of second hanging rings 9 are provided on both left and right end surfaces of the upper die seat 7 .

[0024] In the above structure, a notch 10 corresponding to the exhaust pipe limiting groove 4 is provided on the top end surface of the upper die seat 7 .

[0025] In the above structure, cylindrical pins 11 are provided on the top end surface of the upper die seat 7 near the left and right ends, and the bottom ends of the cylindrical pins 11 are flush with the bottom end surface of the upper die seat 7; the cylindrical pins facilitate the disassembly of the welding fixture after welding.

[0026] The exhaust protection cover welding fixture of the utility model is used in specific work (such as Figure 4 As shown in the figure, the protective cover 12 and the exhaust pipe 13 are placed in the protective cover limit groove and the exhaust pipe limit groove of the lower die seat respectively, and the pad is placed inside the protective cover to prevent the parts from loosening; then the upper die seat is installed on the lower die seat by screws to fix the assembly parts; the protective gas enters the mold from the exhaust pipe mouth, and the protective gas can be evenly distributed at the weld. The protective gas (argon gas) with a purity of 99.99% is connected for at least 20S, and the parameters are adjusted to make the protective gas fill the entire back of the weld to form a stable protective gas field, so as to achieve the welding conditions and protect the weld. This welding fixture can effectively fix the parts, prevent the parts from deformation, and protect the weld to meet the production needs.

[0027] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. An exhaust protection cover welding fixture, comprising: Lower die base (1); The invention is characterized in that: two guide pillars (2) are provided on the top surface of the lower die base (1), a protective cover limiting groove (3) is provided between the two guide pillars (2), an exhaust pipe limiting groove (4) is provided on one side of the protective cover limiting groove (3), a cushion block (5) is placed inside the protective cover limiting groove (3), and an upper die base (7) sleeved on the guide pillars (2) is connected above the lower die base (1) by a plurality of screws (6).

2. The exhaust protection cover welding fixture according to claim 1, characterized in that: A plurality of first hanging rings (8) are provided on both left and right end surfaces of the lower die base (1).

3. The exhaust protection cover welding fixture according to claim 1, characterized in that: A plurality of second hanging rings (9) are provided on both left and right end surfaces of the upper die seat (7).

4. The exhaust protection cover welding fixture according to claim 1, characterized in that: A notch (10) corresponding to the exhaust pipe limiting groove (4) is provided on the top end surface of the upper die seat (7).

5. The exhaust protection cover welding fixture according to claim 1, characterized in that: A cylindrical pin (11) is provided on the top end surface of the upper die seat (7) near the left and right ends, and the bottom end of the cylindrical pin (11) is flush with the bottom end surface of the upper die seat (7).

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