Automatic laser welding positioning device for special-shaped pipe

Abstract

The utility model discloses an automatic laser welding positioning device for a special-shaped pipe. The automatic laser welding positioning device comprises a semicircular plate, a base, a support, a push-pull type presser, an overflow plate, a vertical presser, a positioning plate, a clamping connector, an air inlet guide pipe and an adapter. A semicircular groove is formed in the semicircular plate, a U-shaped groove is formed in the positioning plate, the semicircular plate and the positioning plate are combined to form a positioning clamping space of the special-shaped pipe, the overflow plate blocks one pipe opening of the special-shaped pipe, the base blocks the other pipe opening of the special-shaped pipe, and the air inlet guide pipe and the adapter guide protective gas into an inner cavity of the special-shaped pipe through a ventilation flow channel in the base. The push-pull type pressing device provides positioning pressure among the semicircular plate, the special-shaped pipe and the positioning plate, and the vertical pressing device provides pressure for the overflow plate to press a pipe opening of the special-shaped pipe. The clamping connector is matched with the positioner to achieve overturning of the automatic laser welding positioning device. According to the special-shaped pipe welding tool, the requirements that wires can not be filled, the number of positioning welding spots, the assembly gap before welding, the unfitness of butt joint, the color of welding seams and welding seams on the two sides can be completed through one-time clamping in the special-shaped pipe welding technology requirements are met.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of automatic welding device of combined positioning, locking clamping, protection gas flow channel, repeated accurate positioning of special-shaped pipe assembly structure, specifically a kind of quick clamping positioning device for ensuring special-shaped pipe automatic laser welding, satisfy the technical requirements and laser welding working condition of special-shaped pipe processing. BACKGROUND

[0002] As shown in Figure 1 Figure, special-shaped pipe material is stainless steel 1Cr18Ni9Ti, wall thickness is 1.5mm.Specially-shaped pipe structure is combined by two sheet metal stamping parts Welding, one is semicircular structure, one is U-shaped structure (see Figure 1 Figure, the former is semicircular pipe 11, the latter is half slot 12). Welding technical requirements are as follows:

[0003] 1. Positioning welding cannot be filled with wire;

[0004] 2. Positioning welding point quantity 3-5;

[0005] 3. Welding pre-assembly gap c is less than ≤0.3, misalignment amount e ≤0.3 (see Figure 2 Figure);

[0006] 4. Weld color is silver white;

[0007] 5. Special-shaped pipe two sides weld seam one-time clamping is completed. SUMMARY

[0008] In view of the problems in the background art, the utility model aims at providing a kind of special-shaped pipe automatic laser welding positioning device, satisfies the requirements of special-shaped pipe welding technical requirements such as cannot be filled with wire, positioning welding point quantity, welding pre-assembly gap, misalignment amount, weld color and two sides weld seam one-time clamping completion.

[0009] To achieve the above object, the utility model adopts the following technical scheme:

[0010] A kind of special-shaped pipe automatic laser welding positioning device, the special-shaped pipe is spliced by U-shaped cross section part and semicircular cross section part, and automatic laser welding positioning device includes:

[0011] Semicircular plate, the semicircular plate surface has a semicircular groove for accommodating and positioning special-shaped pipe semicircular cross section part;

[0012] Positioning plate, the positioning plate surface has a U-shaped groove for accommodating and positioning special-shaped pipe U-shaped cross section part, positioning plate is parallel with semicircular plate, interval arrangement, the clamping space of special-shaped pipe is formed between the two, the left and right sides of clamping space form automatic laser welding area, the upper and lower ends of clamping space form the outlet, inlet of protective gas;

[0013] overflow plate, which is installed at one end of the clamping space and is used to block one pipe opening of the special-shaped pipe, and the overflow plate is provided with a vent hole which is communicated with the inner cavity of the special-shaped pipe;

[0014] a base, which is located at the other end of the clamping space, and the end surface of the base is used to block the other pipe opening of the special-shaped pipe, and the base is provided with a vent flow channel, and the vent flow channel is provided with an air outlet in the end surface area of the base which blocks the other pipe opening of the special-shaped pipe, and an air inlet is formed on the rest surface of the base;

[0015] a clamping joint, which is located on the surface of the positioning plate which is away from the U-shaped groove, and the clamping joint extends away from the special-shaped pipe, and the clamping joint is provided with a vent flow channel, and the vent flow channel is provided with an air inlet joint and an air outlet joint on the surface of the clamping joint;

[0016] an air inlet guide pipe, which is connected with the air inlet joint on the clamping joint;

[0017] a switching joint, one end of which is connected with the air outlet joint on the clamping joint, and the other end of which is connected with the air inlet on the base.

[0018] Further, the automatic laser welding positioning device for the special-shaped pipe further comprises a support and a push-pull type presser, the support is installed on the base, the push-pull type presser is fixed on the support, the pressing head of the push-pull type presser is connected with the semicircular plate, and the movement direction of the pressing head of the push-pull type presser is perpendicular to the positioning plate.

[0019] Further, the automatic laser welding positioning device for the special-shaped pipe further comprises a vertical type presser, the vertical type presser is fixed on the positioning plate, and the pressing head of the vertical type presser is connected with the overflow plate.

[0020] As a scheme, the clamping joint comprises a cylindrical surface which is used to be clamped by the positioner.

[0021] Compared with the prior art, the automatic laser welding positioning device has the following characteristics:

[0022] 1. The automatic laser welding positioning device is relatively simple in assembly and manufacturing, and is relatively convenient to use in the process of use.

[0023] 2. The automatic laser welding positioning device ensures the processing technical requirements of the special-shaped pipe, and the quick assembly and positioning process can be smoothly implemented.

[0024] 3. The automatic laser welding positioning device is used to make the weld after welding to be silver white, and the argon protection design effect is good.

[0025] 4. The use of the automatic laser welding positioning device cancels the positioning point welding step, and the lean process. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1This is the assembly drawing of the special-shaped tube parts;

[0027] Figure 2 This is the technical requirement drawing for special-shaped tubes;

[0028] Figure 3 Diagram of the positioning device for laser welding assembly;

[0029] Figure 4 This is the assembly drawing of some parts of the U-shaped section and the positioning plate;

[0030] Figure 5 Assemble the parts of the semicircular structure and the semicircular plate;

[0031] Figure 6 It is the overflow plate diagram;

[0032] Figure 7 This is the assembly drawing of the overflow plate after the parts are attached;

[0033] Figure 8 This is the design drawing of the argon protection flow channel;

[0034] In the figure, 1-semicircular plate, 2-base, 3-support, 4-push-pull type clamp, 5-overflow plate, 6-vertical clamp, 7-positioning plate, 8-clamping joint, 9-air inlet duct, 10-adapter, 11-semicircular tube, 12-half-side groove, 13-gas inlet, 14-gas outlet. DETAILED DESCRIPTION

[0035] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments. However, it should not be understood that the scope of the subject matter described in the present invention is limited to the following embodiments. Without departing from the above-mentioned technical ideas of the present invention, various modifications, substitutions and changes made according to common technical knowledge and customary means in the field are included in the scope of the present invention.

[0036] against Figure 1 and Figure 2The part structure and welding technology requirement in the prior art, in order to realize the technical requirement of the special-shaped pipe welding, the utility model chooses to adopt laser welding. For the assembly gap before welding, the laser welding assembly gap c requirement is not more than 0.3mm, and the assembly error e is not more than 0.3mm, and on the basis of fast assembly, the special-shaped pipe sheet metal part is effectively constrained to realize it. In order to realize that the weld color is silver white after welding, the argon protection of the special-shaped pipe weld position must be sufficient in the welding process, under the condition of not affecting the working condition of the laser welding equipment, the path of the protection gas inlet and outlet flow channel is designed in the device structure, the gas forms a relatively closed space to control the special-shaped pipe weld color after welding. Secondly, through the design of the clamping mechanism in the positioning device, the special-shaped pipe is clamped and fitted, and then laser welding is directly carried out, so that the process steps of 3-5 positioning welding points can be cancelled. In addition, the positioning device is designed to be connected with the positioner, and the two side welds are welded by rotating 180 degrees through the positioner after one clamping.

[0037] As shown in Figure 3 , the automatic laser welding positioning device comprises a semicircular plate 1, a base 2, a support 3, a push-pull type presser 4, an overflow plate 5, a vertical type presser 6, a positioning plate 7, a clamping joint 8, an air inlet pipe 9 and an adapter 10.

[0038] The assembly process of the automatic laser welding positioning device and the special-shaped pipe and the function of each component are as follows:

[0039] 1, the U-shaped cross-section part (half slot 12) of the special-shaped pipe is assembled with the positioning plate 7 (see Figure 4 ), the positioning plate 7 has a U-shaped groove designed therein, and the U-shaped cross-section part of the special-shaped pipe is positioned and constrained by the shape; 2, the semicircular cross-section part (semicircular pipe 11) of the special-shaped pipe is assembled with the semicircular plate 1 (see Figure 5 ), the surface of the semicircular plate 1 is designed according to the outer diameter of the semicircular cross-section part of the special-shaped pipe, the semicircular cross-section part is positioned and constrained by the shape, and the length of the semicircular plate 1 is shorter than the length of the special-shaped pipe;

[0040] 3, the semicircular plate 1 is connected with the push-pull type presser 4, the constrained U-shaped cross-section part and semicircular cross-section part of the special-shaped pipe are pressed and fitted by the push-pull type presser 4, the looseness of the special-shaped pipe in the horizontal direction after assembly is controlled, and there is a gap between the semicircular plate 1 and the positioning plate 7, so that the welds of the U-shaped cross-section part and the semicircular cross-section part of the special-shaped pipe are exposed.

[0041] 4, the overflow plate 3 (see Figure 6 ) is connected with the vertical type presser 6, the end face of the special-shaped pipe is pressed, and the looseness of the special-shaped pipe in the vertical direction after assembly is controlled (see Figure 7 ).

[0042] 5. The inlet pipe 9 is connected to the argon bottle. The gas is introduced into the inner cavity of the special-shaped tube according to the internal flow channel to form a relatively closed space. The argon protection flow outlet is the 5 Φ1 ventilation holes designed on the overflow plate 3 to keep the argon inside the special-shaped tube full and in a flowing state (see Figure 8 As shown, a gas inlet 13 and a gas outlet 14 are shown).

[0043] 6. The clamping chuck 8 is connected to the positioner, and the entire automatic laser welding device is connected to the positioner for rotation and positioning, and the laser automatic welding of the welds on both sides of the special-shaped tube is completed in one clamping.

[0044] 7. A support 3 is provided on the base 2, and the base 2 is connected to the positioning plate 7. The support 3 is used to install the push-pull type compression device 4. The base 2 is processed with an argon channel inside, and is used to block one of the pipe openings of the special-shaped tube and introduce argon into the inner cavity of the special-shaped tube. The base 2 is connected to the adapter 10, which passes the argon flowing into the inlet duct 9 to the special-shaped tube.

[0045] The automatic laser welding positioning device of the utility model takes into account both lightweight and ergonomics in structural design, and meets various assembly and use requirements.

[0046] The above is only one specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A positioning device for automatic laser welding of a profiled tube, the profiled tube being formed by splicing a U-shaped cross-section portion and a semi-circular cross-section portion, characterized in that, The automatic laser welding positioning device comprises: a semicircular plate (1) having a semicircular groove on its surface for accommodating and positioning a semicircular section of a special-shaped pipe; a positioning plate (7) having a U-shaped groove on its surface for accommodating and positioning a U-shaped section of the special-shaped pipe, the positioning plate (7) being arranged in parallel with the semicircular plate (1) at intervals to form a clamping space for the special-shaped pipe between the two plates, the left and right sides of the clamping space forming automatic laser welding areas, and the upper and lower ends of the clamping space forming outlets and inlets for protective gas; an overflow plate (5) installed at one end of the clamping space and used for blocking one pipe opening of the special-shaped pipe, the overflow plate (5) having a vent hole communicating with the inner cavity of the special-shaped pipe; a base (2) located at the other end of the clamping space, the end surface of the base (2) being used for blocking the other pipe opening of the special-shaped pipe, the base (2) having a vent flow channel therein, the vent flow channel having an air outlet at the end surface area of the base (2) and an air inlet formed on the remaining surface of the base (2); a clamping joint (8) located on the surface of the positioning plate (7) away from the U-shaped groove, the clamping joint (8) extending away from the special-shaped pipe, the clamping joint (8) having a vent flow channel formed therein, the vent flow channel having an air inlet joint and an air outlet joint formed on the surface of the clamping joint (8); an air inlet guide pipe (9) connected to the air inlet joint of the clamping joint (8); an adapter (10) having one end connected to the air outlet joint of the clamping joint (8) and the other end connected to the air inlet of the base (2).

2. The automatic laser welding positioning device for a profiled tube according to claim 1, characterized in that: The device further comprises a support (3) installed on the base (2) and a push-pull type press (4) fixed on the support (3), the press head of the push-pull type press (4) being connected to the semicircular plate (1) and moving in a direction perpendicular to the positioning plate (7).

3. The automatic laser welding positioning device for a profiled tube according to claim 1, characterized in that: The device further comprises a vertical type press (6) fixed on the positioning plate (7), the press head of the vertical type press (6) being connected to the overflow plate (5).

4. The automatic laser welding positioning device for profiled pipes according to claim 1, characterized in that: The clamping joint (8) comprises a cylindrical surface for clamping with a positioner. The automatic laser welding positioning device comprises: a semicircular plate (1) having a semicircular groove on its surface for accommodating and positioning a semicircular section of a special-shaped pipe; a positioning plate (7) having a U-shaped groove on its surface for accommodating and positioning a U-shaped section of the special-shaped pipe, the positioning plate (7) being arranged in parallel with the semicircular plate (1) at intervals to form a clamping space for the special-shaped pipe between the two plates, the left and right sides of the clamping space forming automatic laser welding areas, and the upper and lower ends of the clamping space forming outlets and inlets for protective gas; an overflow plate (5) installed at one end of the clamping space and used for blocking one pipe opening of the special-shaped pipe, the overflow plate (5) having a vent hole communicating with the inner cavity of the special-shaped pipe; a base (2) located at the other end of the clamping space, the end surface of the base (2) being used for blocking the other pipe opening of the special-shaped pipe, the base (2) having a vent flow channel therein, the vent flow channel having an air outlet at the end surface area of the base (2) and an air inlet formed on the remaining surface of the base (2); a clamping joint (8) located on the surface of the positioning plate (7) away from the U-shaped groove, the clamping joint (8) extending away from the special-shaped pipe, the clamping joint (8) having a vent flow channel formed therein, the vent flow channel having an air inlet joint and an air outlet joint formed on the surface of the clamping joint (8); an air inlet guide pipe (9) connected to the air inlet joint of the clamping joint (8); an adapter (10) having one end connected to the air outlet joint of the clamping joint (8) and the other end connected to the air inlet of the base (2). The device further comprises a support (3) installed on the base (2) and a push-pull type press (4) fixed on the support (3), the press head of the push-pull type press (4) being connected to the semicircular plate (1) and moving in a direction perpendicular to the positioning plate (7). The device further comprises a vertical type press (6) fixed on the positioning plate (7), the press head of the vertical type press (6) being connected to the overflow plate (5). The clamping joint (8) comprises a cylindrical surface for clamping with a positioner.

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