Thin-wall pipe fitting welding cooling device

Abstract

The utility model provides a thin-wall pipe fitting welding cooling device which effectively solves the technical problems that when the edge of a thin-wall pipe fitting is welded in the prior art, the temperature of the edge of the thin-wall pipe fitting is high, and welding shrinkage deformation occurs. According to the thin-wall pipe fitting welding cooling device, a support is connected with a cooling assembly, a mounting assembly axially connected with a thin-wall pipe fitting in an inserted mode and a fixing assembly horizontally connected with a workpiece in an inserted mode, and the mounting assembly penetrates through the thin-wall pipe fitting and then is connected with the workpiece and the fixing assembly in an inserted mode; the cooling part of the cooling assembly is connected with the mounting assembly and located on the inner side of the welding part of the thin-wall pipe fitting and the workpiece. The cooling assembly is arranged to cool the welding part so as to prevent shrinkage deformation generated by welding of the thin-wall structure and the pipe fitting, the position of the cooling concentration head of the cooling assembly can be further limited, a better welding effect is provided, and the problems that a welding seam is not attractive and the welding effect is poor due to displacement generated in the welding process are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of welding equipment, in particular to a thin-wall pipe welding cooling device. Background Art

[0002] Thin-walled pipe fittings are made of steel ingots or solid pipe blanks through perforation to form rough pipes, and then hot-rolled, cold-rolled or cold-drawn to form thin-walled pipes. At present, there are two ways to connect thin-walled pipe fittings: mechanical connection and non-mechanical connection. Mechanical connection is divided into various connection methods such as clamping type and flange type, and non-mechanical connection is mainly divided into socket welding and butt welding. During butt welding, due to the thin pipe wall, improper welding force can easily cause deformation of thin-walled pipe fittings, resulting in uneven welding of thin-walled pipe fittings and deviation of welding position, which in turn affects the welding quality and causes uneven quality of finished products.

[0003] In order to solve the problem of welding deformation of thin-walled pipe fittings and improve the welding quality of thin-walled pipe fittings, a Chinese utility model patent with an authorization announcement date of 2023-7-18 and an authorization announcement number of CN219358487U has appeared. It discloses a welding tool for thin-walled pipes. When thin-walled steel pipes are assembled or welded, the expansion sleeve of the tool is inserted into the pipe to be welded. The driving rod can drive the expansion block to move axially. The expansion sleeve and the expansion block cooperate to fix the thin-walled pipe to prevent the thin-walled pipe from deforming during welding and affecting the welding quality. At the same time, the expansion sleeve can also effectively prevent the thin-walled pipe from being burned through during welding.

[0004] The above-mentioned welding tooling for thin-walled pipes reduces the overall bending deformation of thin-walled pipe fittings by expanding the sleeve. However, during actual welding, the temperature of the welding part is relatively high, and welding shrinkage deformation will still occur at the edges, which cannot meet the welding requirements. At the same time, during the welding process, the pipe fittings and thin-walled parts are also prone to displacement, resulting in unsightly welds and poor welding effects. Utility Model Content

[0005] The utility model provides a thin-walled pipe welding cooling device, which effectively solves the technical problem in the prior art that when welding at the edge of the thin-walled pipe, the temperature at the edge of the thin-walled pipe is high, resulting in welding shrinkage deformation.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A thin-walled pipe welding cooling device comprises a bracket, which is connected to a cooling component, a mounting component axially plugged into the thin-walled pipe, and a fixing component horizontally plugged into a workpiece. The mounting component passes through the thin-walled pipe and is plugged into the workpiece and the fixing component. The cooling part of the cooling component is connected to the mounting component and is located on the inner side of the welding part between the thin-walled pipe and the workpiece.

[0008] By arranging the cooling part of the cooling assembly inside the welding part of the thin-walled pipe and the workpiece, the welding part can be effectively cooled, the temperature can be reduced, and deformation caused by overheating can be avoided. This helps to improve welding quality and reduce welding shrinkage deformation. The installation assembly passes through the thin-walled pipe, the workpiece and the fixing assembly in sequence, which can stably fix the position of the thin-walled pipe and the workpiece, prevent them from displacement during the welding process, and ensure the precise position and aesthetics of the weld.

[0009] Furthermore, the cooling assembly includes a cooling concentrator head arranged in the mounting assembly, the cooling concentrator head is respectively connected to a circulation pump and a transfer box, the circulation pump is connected to the transfer box, and a fluid medium is thermally circulated between the cooling concentrator head, the circulation pump, and the transfer box. The thermal circulation between the cooling concentrator head, the circulation pump, and the transfer box helps to take away heat from the welding part, so that it remains at a low temperature. This can effectively reduce the temperature of the welding part and reduce welding shrinkage deformation.

[0010] Furthermore, the circulation pump and the transfer box, the cooling concentrator and the transfer box, and the cooling concentrator and the circulation pump are all connected by rigid connecting pipes. By connecting the circulation pump and the transfer box, the cooling concentrator and the transfer box, and the cooling concentrator and the circulation pump by connecting pipes, the firmness and stability of the connection can be ensured. In this way, problems such as looseness, water leakage or breakage of the connection parts can be avoided, and the normal operation of the cooling device can be ensured.

[0011] Furthermore, the fluid medium is water / oil / gas. Water, as a common thermal cycle medium, has good thermal conductivity and heat capacity, and can efficiently absorb and release heat. Oil, as a fluid medium, has high thermal conductivity and heat capacity. The use of oil can quickly transfer heat in the thermal cycle and can maintain stability at higher temperatures. The high temperature stability of oil enables it to withstand higher temperatures during high temperature welding and provide better cooling effects. As a thermal cycle medium, gas has the characteristics of low viscosity and low density, and can flow quickly and take away heat.

[0012] Furthermore, the installation assembly includes a mounting tube and a movable inner tube which are sequentially sleeved on the outside of the cooling concentrating head, the mounting tube is respectively welded to the cooling concentrating head and threadedly connected to the movable inner tube, and the movable inner tube is tightly fitted with the thin-walled pipe fitting. By sleeve-mounting the mounting tube on the outside of the cooling concentrating head and welding it to the cooling concentrating head, and by threading the movable inner tube and the mounting tube, the fixing and connection of the installation component can be achieved. Such a design can ensure the stability and reliability of the installation component, and a tight connection can be achieved by the tight fit between the movable inner tube and the thin-walled pipe fitting. The tight fit can ensure the tightness of the connection and avoid looseness.

[0013] Furthermore, the upper part of the movable inner tube is provided with a mounting limit platform in a stepped shape, the connecting tube is provided with a pressing plate, and the pressing plate is connected to the mounting limit platform by a spring. By installing the pressing plate on the connecting frame tube and connecting it to the mounting limit platform by a spring, the mounting components can be pressed and fixed. The presence of the spring can provide a certain elastic support to adapt to changes under different working conditions.

[0014] Furthermore, the fixing assembly includes a plug block supported inside the workpiece, the plug block is provided with a through hole connected to the welding hole of the workpiece, and a limiting column for limiting the position of the workpiece is inserted in the through hole. By arranging a support on the plug block inside the workpiece, the workpiece can be fixed and supported. The presence of the plug block can prevent the workpiece from loosening or shifting during use, thereby ensuring the stability and reliability of the workpiece. The through hole is connected with a limiting column for limiting the position of the workpiece, thereby limiting and fixing the position of the workpiece. The presence of the through hole can ensure the connection between the limiting column and the workpiece, thereby preventing the limiting column from loosening or falling off.

[0015] Furthermore, a bottom pad is provided at one end of the limit column in contact with the ground, a support pad is provided at the bottom of the plug block outside the workpiece, the diameter of the bottom pad is greater than the diameter of the through hole, and the thickness of the support pad is equal to the sum of the thickness of the bottom pad and the wall thickness of the workpiece. The arrangement of the bottom pad and the support pad can provide stable support and buffering effect for the workpiece.

[0016] Furthermore, a lifting component is provided between the fixing component and the mounting component. The spacing between the mounting component and the fixing component can be adjusted by the setting of the lifting component, so that the thin-walled pipe and the welding part of the workpiece are closely fitted, which is convenient for welding processing.

[0017] Furthermore, the lifting assembly includes a transmission motor installed on a vertical slide rail, the transmission motor is connected to a lead screw, the lead screw is connected to a lead screw slider installed on the slide rail and a fixed assembly in turn, the cooling assembly and the mounting assembly are installed on the lead screw slider, and the lead screw and the fixed assembly are clearance-matched. The height of the mounting assembly can be freely adjusted by setting the lead screw and the slider, and the thin-walled pipe on the mounting assembly can be accurately fitted with the workpiece on the fixed assembly.

[0018] The beneficial effects of the utility model are:

[0019] 1. Cooling the welding parts by setting up cooling components can prevent shrinkage deformation caused by welding of thin-walled structures and pipe fittings, and further limit the position of the cooling concentrated head of the cooling component to provide better welding effect and reduce the displacement during welding, resulting in unsightly welds and poor welding effect.

[0020] 2. Reduce the error of manual placement by setting the lifting component to move, reduce displacement and improve accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of a thin-walled pipe welding cooling device;

[0022] Figure 2 It is a structural schematic diagram of a thin-walled pipe welding cooling device from another angle;

[0023] Figure 3 It is a cross-sectional view of a thin-walled pipe welding cooling device;

[0024] Figure 4 for Figure 3 A partial enlarged view of part A.

[0025] in:

[0026] 1. Thin-walled pipe fittings;

[0027] 2. Workpiece;

[0028] 3. Fixing assembly, 31. Support pad;

[0029] 4. lifting assembly, 41. transmission motor, 42. lead screw, 43. lead screw slider;

[0030] 5. Cooling assembly, 51. Circulation pump, 52. Transfer box, 53. Coolant pipe, 531. Cooling concentrator, 532. Connecting pipe;

[0031] 6. Installation assembly, 61. Centralized head limit, 62. Longitudinal limit, 611. Installation tube, 612. Movable inner tube, 621. Spring, 622. Press plate, 6121. Installation limit table;

[0032] 7. Bottom limit, 71. Bottom limit base pad, 72. Limit column. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field of the present invention; the terms used in the specification of the present invention are only for the purpose of describing specific implementation methods and are not intended to limit the present invention; the term "and / or" used herein includes any and all combinations of one or more related listed items.

[0035] Embodiment 1, a thin-walled pipe welding cooling device, such as Figure 1 As shown, it includes a bracket, which is connected to a cooling component 5, a mounting component 6 axially plugged into the thin-walled pipe 1, and a fixing component 3 horizontally plugged into the workpiece 2. The mounting component 6 passes through the thin-walled pipe 1 and is plugged into the workpiece 2 and the fixing component 3. The cooling part of the cooling component 5 is connected to the mounting component 6 and is located on the inner side of the welding part between the thin-walled pipe 1 and the workpiece 2.

[0036] By arranging the cooling part of the cooling assembly 5 to be located inside the welding part of the thin-walled pipe 1 and the workpiece 2, the welding part can be effectively cooled, the temperature can be reduced, and deformation caused by overheating can be avoided. This helps to improve the welding quality and reduce welding shrinkage deformation. The mounting assembly 6 passes through the thin-walled pipe 1, the workpiece 2 and the fixing assembly 3 in sequence, and can stably fix the positions of the thin-walled pipe 1 and the workpiece 2 to prevent them from shifting during the welding process, thereby ensuring the precise position and aesthetics of the weld.

[0037] Example 2, as a preferred implementation of the thin-walled pipe welding cooling device, as Figure 1 , Figure 3 As shown, the difference from Example 1 is that the cooling assembly 5 includes a cooling concentrating head 531 arranged in the mounting assembly 6, and the cooling concentrating head 531 is connected to the circulation pump 51 and the transfer box 52 respectively, and the circulation pump 51 is connected to the transfer box 52, and the cooling concentrating head 531, the circulation pump 51, and the transfer box 52 are thermally circulated through the fluid medium. The thermal circulation between the cooling concentrating head 531, the circulation pump 51 and the transfer box 52 helps to take away the heat from the welding part and keep it at a low temperature. This can effectively reduce the temperature of the welding part and reduce welding shrinkage deformation.

[0038] Example 3, as a preferred implementation of the thin-walled pipe welding cooling device, Figure 3As shown, the difference from Example 2 is that the circulation pump 51 and the transfer box 52, the cooling concentrated head 531 and the transfer box 52, and the cooling concentrated head 531 and the circulation pump 51 are all connected by a rigid connecting pipe 532. By using the connecting pipe 532 to connect the circulation pump 51 and the transfer box 52, the cooling concentrated head 531 and the transfer box 52, and the cooling concentrated head 531 and the circulation pump 51, the firmness and stability of the connection can be ensured. In this way, problems such as loosening, water leakage or breakage of the connection parts can be avoided.

[0039] Example 4, as a preferred implementation of a thin-walled pipe welding cooling device, is different from Example 3 in that the fluid medium is water, oil or gas. Water, as a common thermal circulation medium, has good thermal conductivity and heat capacity, and can efficiently absorb and release heat. Oil, as a fluid medium, has high thermal conductivity and heat capacity. The use of oil can quickly transfer heat in the thermal cycle and can maintain stability at higher temperatures. The high temperature stability of oil enables it to withstand higher temperatures during high-temperature welding and provide better cooling effects. As a thermal circulation medium, gas has the characteristics of low viscosity and low density, and can flow quickly and take away heat.

[0040] Example 5, as a preferred implementation of the thin-walled pipe welding cooling device, Figure 1 , Figure 3 , Figure 4 As shown, the difference from Example 4 is that the mounting assembly 6 includes a mounting tube 611 and a movable inner tube 612 which are sequentially sleeved outside the cooling concentrating head 531, and the mounting tube 611 is respectively welded to the cooling concentrating head 531 and threadedly connected to the movable inner tube 612, and the movable inner tube 612 is tightly fitted with the thin-walled pipe fitting 1. By sleeved the mounting tube 611 outside the cooling concentrating head 531 and welding it to the cooling concentrating head 531, and by threading the movable inner tube 612 and the mounting tube 611, the fixing and connection of the mounting component can be achieved. Such a design can ensure the stability and reliability of the mounting component, and a tight connection can be achieved by the tight fit between the movable inner tube 612 and the thin-walled pipe fitting 1. Tight fit can ensure the tightness of the connection and avoid looseness.

[0041] Example 6, as a preferred implementation of the thin-walled pipe welding cooling device, Figure 4As shown, the difference from Example 5 is that the upper part of the movable inner tube 612 is provided with a mounting limit platform 6121 in a stepped shape, and the connecting tube 532 is provided with a pressing plate 622, and the pressing plate 622 is connected to the mounting limit platform 6121 through a spring 621. By installing the pressing plate 622 on the connecting frame tube 532 and connecting it to the mounting limit platform 6121 through the spring 621, the mounting components can be pressed and fixed. The existence of the spring 621 can provide a certain elastic support, adapt to changes under different working conditions, and make the connection more reliable.

[0042] Example 7, as a preferred implementation of the thin-walled pipe welding cooling device, as Figure 1 , Figure 3 As shown, the difference from Example 1 to Example 6 is that the fixing assembly 3 includes a plug block supported inside the workpiece 2, the plug block is provided with a through hole connected to the welding hole of the workpiece 2, and the through hole is plugged with a limiting column 72 for limiting the position of the workpiece 2. By arranging a support on the plug block inside the workpiece 2, the workpiece 2 can be fixed and supported. The presence of the plug block can prevent the workpiece 2 from loosening or shifting during use, and ensure the stability and reliability of the workpiece 2. The through hole is plugged with a limiting column 72 for limiting the position of the workpiece 2, and the position of the workpiece 2 can be limited and fixed. The presence of the through hole can ensure the connection between the limiting column 72 and the workpiece 2, and prevent the limiting column 72 from loosening or falling off.

[0043] Example 8, as a preferred implementation of the thin-walled pipe welding cooling device, as Figure 2 , Figure 3 As shown, the difference from Example 7 is that a bottom pad is provided at the end of the limiting column 72 in contact with the ground, and a support pad 31 is provided at the bottom of the plug block outside the workpiece, the diameter of the bottom pad is larger than the diameter of the through hole, and the thickness of the support pad 31 is equal to the sum of the thickness of the bottom pad and the wall thickness of the workpiece 2. The arrangement of the bottom pad and the support pad 31 can provide stable support and buffering for the workpiece 2.

[0044] Example 9, as a preferred implementation of the thin-walled pipe welding cooling device, Figure 1 As shown, the difference from the above embodiment is that a lifting assembly 4 is provided between the fixing assembly 3 and the mounting assembly 6. The spacing between the mounting assembly 6 and the fixing assembly 3 can be adjusted by the provision of the lifting assembly 4, so that the welding part of the thin-walled pipe 1 and the workpiece 2 fits tightly, which is convenient for welding processing.

[0045] Example 10, as a preferred implementation of the thin-walled pipe welding cooling device, Figure 1 , Figure 2As shown, the difference from Example 9 is that the lifting assembly 4 includes a transmission motor 41 installed on a vertical slide rail, the transmission motor 41 is connected to a lead screw 42, the lead screw 42 is sequentially connected to a lead screw slider 43 installed on the slide rail and the fixed assembly 3, the cooling assembly 5 and the mounting assembly 6 are installed on the lead screw slider 43, and the lead screw 42 is clearance-matched with the fixed assembly 3. The height of the mounting assembly 6 can be freely adjusted by setting the lead screw 42 and the lead screw slider 43, and the thin-walled pipe 1 on the mounting assembly 6 and the workpiece 2 on the fixed assembly 3 can be accurately fitted.

[0046] Embodiment 11, when used specifically, firstly, the thin-walled pipe fitting 1 to be welded is tightly sleeved on the outside of the mounting assembly 6, the workpiece 2 is sleeved on the outside of the plug block 3 and the limiting column 72 is inserted to limit and fix the workpiece 2, the thin-walled pipe fitting 1 is rotated to adjust the position of the cooling concentrated head 531 through the thread between the mounting tube 611 and the concentrated head limit 61, the pressure plate 622 limits and squeezes the concentrated head limit 61 on the spring 621, and the spring 621 is used as a pressure compensator or anti-loosening device to improve the adjustment effect of the cooling concentrated head 531; then, the lead screw 42 is rotated by the transmission motor 41, and the lead screw slider 43 moves downward, and the welding part of the thin-walled pipe fitting 1 on the mounting assembly 6 is aligned with the welding part of the workpiece 2; finally, welding is performed, and the thin-walled pipe welding cooling device is removed after welding is completed.

[0047] Although the present invention has been disclosed as above in terms of preferred embodiments, it is not intended to limit the present invention. Anyone familiar with the technology may make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be based on the definition of the claims.

Claims

1. A thin-walled pipe welding cooling device, comprising a bracket, characterized in that: The bracket is connected to a cooling component (5), a mounting component (6) axially plugged into the thin-walled pipe (1), and a fixing component (3) horizontally plugged into the workpiece (2); the mounting component (6) passes through the thin-walled pipe (1) and is plugged into the workpiece (2) and the fixing component (3); a cooling portion of the cooling component (5) is connected to the mounting component (6) and is located inside a welding portion between the thin-walled pipe (1) and the workpiece (2).

2. The thin-walled pipe welding cooling device according to claim 1 is characterized in that: The cooling assembly (5) comprises a cooling concentrating head (531) arranged in the mounting assembly (6); the cooling concentrating head (531) is connected to a circulation pump (51) and a transfer box (52) respectively; the circulation pump (51) is in communication with the transfer box (52); a fluid medium is thermally circulated between the cooling concentrating head (531), the circulation pump (51) and the transfer box (52).

3. The thin-walled pipe welding cooling device according to claim 2 is characterized in that: The circulation pump (51) and the transfer box (52), the cooling concentration head (531) and the transfer box (52), and the cooling concentration head (531) and the circulation pump (51) are all connected by rigid connecting pipes (532).

4. The thin-walled pipe welding cooling device according to claim 3 is characterized in that: The fluid medium is water, oil or gas.

5. The thin-walled pipe welding cooling device according to claim 4 is characterized in that: The mounting assembly (6) comprises a mounting tube (611) and a movable inner tube (612) which are sequentially sleeved outside the cooling concentrating head (531); the mounting tube (611) is respectively welded to the cooling concentrating head (531) and threadedly connected to the movable inner tube (612); the movable inner tube (612) is tightly fitted to the thin-walled pipe fitting (1).

6. The thin-walled pipe welding cooling device according to claim 5, characterized in that: The upper part of the movable inner tube (612) is provided with a mounting limit platform (6121) in a stepped manner, and the connecting tube (532) is provided with a pressing plate, and the pressing plate and the mounting limit platform (6121) are connected via a spring (621).

7. The thin-walled pipe welding cooling device according to any one of claims 1 to 6, characterized in that: The fixing assembly (3) comprises a plug block supported inside the workpiece (2), the plug block being provided with a through hole communicating with a welding hole of the workpiece (2), the through hole being plugged with a limiting column (72) for limiting the position of the workpiece (2).

8. The thin-walled pipe welding cooling device according to claim 7, characterized in that: A bottom pad (71) is provided at one end of the limiting column (72) in contact with the ground, and a support pad (31) is provided at the bottom of the plug block located outside the workpiece (2); the diameter of the bottom pad (71) is greater than the diameter of the through hole, and the thickness of the support pad (31) is equal to the sum of the thickness of the bottom pad (71) and the wall thickness of the workpiece.

9. The thin-walled pipe welding cooling device according to any one of claims 1 to 6 and 8, characterized in that: A lifting assembly (4) is provided between the fixing assembly (3) and the mounting assembly (6).

10. The thin-walled pipe welding cooling device according to claim 9, characterized in that: The lifting assembly (4) comprises a transmission motor (41) mounted on a vertical slide rail, the transmission motor (41) being connected to a lead screw (42), the lead screw (42) being connected in sequence to a lead screw slider (43) mounted on the slide rail and a fixed assembly (3), the cooling assembly (5) and the mounting assembly (6) being mounted on the lead screw slider (43), and the lead screw (42) and the fixed assembly (3) being clearance-matched.

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