Welding deformation auxiliary control device and control method

Abstract

The present invention discloses a welding deformation auxiliary control device and control method, including a constraint component, a heat-conducting support component, and a cooling component; the constraint component includes a clamping component, a fixing seat, and an elastic component connecting the clamping component and the fixing seat, the clamping component is provided with a clamping surface for clamping the component to be welded, the fixing seat is arranged below the clamping surface, and the elastic component is used to drive the clamping surface to move toward the fixing seat so that the clamping surface clamps the component to be welded at the welding position; the heat-conducting support component is arranged on the side of the component to be welded away from the constraint component to form a welding pad to control heat input, and the heat-conducting support component is used to support the component to be welded and to conduct heat with the component to be welded; the cooling component is connected to the heat-conducting support component, and the cooling component is used to absorb the heat of the heat-conducting support component to cool down the component to be welded through the heat-conducting support component. Such an arrangement can effectively reduce the deformation amount and internal stress generated during welding of the component to be welded.

Description

Technical Field

[0001] The present invention relates to the technical field of metal welding, and in particular to a welding deformation auxiliary control device and a control method. Background Art

[0002] Welding is a common metal connection technology. During welding, a large amount of heat will be input to the welding part of the material, which will cause thermal expansion and contraction of the welding part of the material, and then cause deformation and internal stress of the welding part. These deformations and internal stresses will affect the dimensional accuracy and mechanical properties of the material after welding. Therefore, auxiliary devices are needed to control the deformation of the welding part of the material to reduce the deformation and internal stress of the material during welding.

[0003] In the prior art, there is a welding fixture, which tightens the pressure plate to the thin plate to be welded at a specific position along the thickness direction of the pressure plate by screwing the butterfly bolt, so as to mechanically constrain the thin plate to be welded, thereby controlling the deformation of the thin plate to be welded during welding. However, this control method has a small control effect on the deformation of the welding part of the material. For some metals with large deformation during welding or with high precision requirements, it is impossible or difficult to control the deformation within the required range. Therefore, it is necessary to provide an improved welding deformation auxiliary control device. Summary of the invention

[0004] The object of the present invention is to provide a welding deformation auxiliary control device and a control method for effectively controlling the welding deformation of the parts to be welded, thereby effectively reducing the deformation and internal stress generated during welding of the parts to be welded.

[0005] The purpose of the present invention is achieved by the following technical solutions:

[0006] In a first aspect, an embodiment of the present application provides a welding deformation auxiliary control device for auxiliaryly controlling the deformation of a part to be welded when welding the part to be welded. The welding deformation auxiliary control device includes:

[0007] A constraint assembly, comprising a pressing member, a fixing seat, and an elastic member connecting the pressing member and the fixing seat, wherein the pressing member is provided with a pressing surface for pressing the component to be welded, the fixing seat is provided below the pressing surface, and the elastic member is used to drive the pressing surface to move toward the fixing seat so that the pressing surface presses the component to be welded at a welding position; the pressing member is used to move along the welding direction to respectively press multiple positions of the component to be welded;

[0008] A heat-conducting support member, which is arranged on a side of the component to be welded away from the restraining assembly to form a welding pad to control heat input, and the heat-conducting support member is used to support the component to be welded and to conduct heat with the component to be welded;

[0009] A cooling component is connected to the heat-conducting support member, and the cooling component is used to absorb the heat of the heat-conducting support member and dissipate heat through a cold circuit circulation of the cooling component, so as to cool the component to be welded through the heat-conducting support member.

[0010] Preferably, the cooling assembly comprises a cooling channel and a liquid storage component, the cooling channel is opened in the heat-conducting support component, and the liquid storage component is used to supply or recover cooling liquid into the cooling channel.

[0011] Preferably, the cooling channel includes an inlet channel for receiving the cooling liquid and an outlet channel for discharging the cooling liquid, and the cooling assembly also includes an adapter, which is connected to the heat-conductive support member, and a conversion channel is formed in the adapter for the cooling liquid to flow from the inlet channel to the outlet channel.

[0012] Preferably, the liquid inlet flow channel and the liquid outlet flow channel respectively penetrate the heat conductive support member along the extension direction of the to-be-welded portion of the to-be-welded component, the adapter is arranged at the end of the heat conductive support member, and the conversion flow channel is respectively communicated with the liquid inlet flow channel and the liquid outlet flow channel;

[0013] And / or, the connection between the conversion channel and the liquid inlet channel and the liquid outlet channel is sealed by using sealing members respectively.

[0014] Preferably, it further comprises a bracket, the bracket comprises a limiting portion and the fixing seat, and the pressing member comprises a connecting member; the connecting member is connected to the limiting portion and can rotate relative to the limiting portion to adjust the position of the pressing member;

[0015] The pressing member can be installed at multiple positions of the bracket along the welding direction to respectively press multiple positions of the parts to be welded.

[0016] Preferably, the connecting member may be a rotating shaft, the limiting portion may be a groove matched with the connecting member, and the connecting member may be installed in the limiting portion.

[0017] Preferably, the connecting member is further connected to a pair of stoppers, which are arranged on opposite sides of the bracket along the extension direction of the connecting member to limit the relative movement between the connecting member and the bracket along the extension direction of the connecting member;

[0018] And / or, the extending direction of the connecting member is perpendicular to the extending direction of the to-be-welded portion of the to-be-welded parts.

[0019] Preferably, the bracket includes a supporting portion and an adjusting portion, the supporting portion is provided with the fixing seat, and the supporting portion is provided between the adjusting portion and the heat-conductive supporting member; the adjusting portion is provided with a plurality of limiting portions, and the plurality of limiting portions are spaced apart along the extension direction of the to-be-welded portion of the component to be welded, and the clamping member can be connected to any one of the limiting portions so that the clamping member is limited to a plurality of positions of the bracket and the plurality of positions of the component to be welded are clamped separately.

[0020] Preferably, a pair of the adjusting parts are provided, the pair of the adjusting parts are arranged in parallel and spaced apart, the limiting parts of the pair of the adjusting parts are arranged in one-to-one correspondence, and the corresponding pair of limiting parts are used together to limit the connecting member.

[0021] Preferably, the heat-conducting support member is provided with a groove, and the groove is located on the back side of the welding position of the component to be welded; the heat-conducting support member is a copper gasket;

[0022] And / or, the pressing member includes a pair of presser feet arranged at intervals, and the pair of presser feet are pressed on opposite sides of the welding position of the parts to be welded; the presser feet include an arc portion and a plane portion connected to each other, and the plane portions of the pair of presser feet are used together to press the parts to be welded, the arc portion is arranged on one side of the plane portion, and the arc portion is bent upward from the plane portion, and the arc portion is used to reduce the travel resistance of the pressing member.

[0023] In a second aspect, an embodiment of the present application provides a welding deformation control method, which is performed by using any one of the above-mentioned welding deformation auxiliary control devices, and the welding deformation control method includes:

[0024] A clamping member of a constraint assembly is used to apply mechanical constraints to the component to be welded, so as to constrain the component to be welded in a welding position; a side of the component to be welded away from the constraint assembly is supported by a heat-conducting support member, so that the heat-conducting support member forms a welding pad to control heat input, and the heat-conducting support member and the component to be welded are heat-conducted;

[0025] The cooling assembly forms a cold circuit cycle to cool the components to be welded through the heat-conducting support member;

[0026] After welding is completed on one position of the component to be welded, the pressing member is moved along the welding direction so that the pressing member presses another position of the component to be welded and welding is performed; this step is repeated until welding is completed on the component to be welded.

[0027] Preferably, the “using a clamping member of a constraint assembly to apply mechanical constraints to the parts to be welded” specifically includes:

[0028] The pressing member is lifted, and the pressing member drives the elastic member to extend, and the elastic member generates a driving force to drive the pressing member to move downward so that the pressing member is pressed against the component to be welded.

[0029] Preferably, the “cooling assembly forms a cold circuit cycle to cool the component to be welded through the heat conductive support member” includes:

[0030] An inlet channel and an outlet channel are provided on the heat-conducting support, and a conversion channel connecting the inlet channel and the outlet channel is provided. The coolant flows into the inlet channel and flows to the outlet channel through the conversion channel, and then flows out from the outlet channel to form a cold circuit circulation.

[0031] Preferably, the “moving the pressing member along the welding direction so that the pressing member presses another position of the part to be welded and performs welding” includes:

[0032] A plurality of limiting parts are provided which are arranged in sequence and at intervals along the welding direction. A connecting part which can be matched with the limiting part is provided at one end of the clamping part. The connecting part is matched with different limiting parts so that the clamping part can be pressed on multiple positions of the parts to be welded along the welding direction.

[0033] Compared with the prior art, the beneficial effects of the present invention include at least:

[0034] By setting a constraint assembly to press the parts to be welded, the parts to be welded can be mechanically constrained to control the accuracy of the parts to be welded during installation and the flatness of the welding surface of the parts to be welded; by setting a heat-conducting support to conduct heat with the parts to be welded, the heat dissipation area can be increased, thereby improving the heat dissipation effect of the parts to be welded, and the heat of the parts to be welded can be dispersed to avoid excessive local heat concentration in the parts to be welded, thereby reducing the thermal deformation and internal stress of the parts to be welded; by using a cooling assembly to cool the parts to be welded, the thermal deformation and internal stress of the parts to be welded can be further reduced. The combination of mechanical constraints, heat conduction, cooling and other methods can effectively reduce the deformation and internal stress of the parts to be welded during welding, as well as reduce the heat input and the size of the welding heat-affected zone, thereby greatly controlling the welding shrinkage and improving the welding accuracy and welding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 1 is a schematic structural diagram of a welding deformation auxiliary control device and a component to be welded according to an embodiment of the present invention;

[0036] Figure 2 is a structural schematic diagram of a welding deformation auxiliary control device according to an embodiment of the present invention;

[0037] Figure 3 is a structural schematic diagram of the welding deformation auxiliary control device according to an embodiment of the present invention from another perspective;

[0038] Figure 4 is a structural schematic diagram of the welding deformation auxiliary control device according to an embodiment of the present invention from another perspective;

[0039] Figure 5 is a cross-sectional view of a welding deformation auxiliary control device according to an embodiment of the present invention;

[0040] Figure 6 It is a partial structural schematic diagram of a welding deformation auxiliary control device according to an embodiment of the present invention.

[0041] In the figure: 100, parts to be welded; 101, first part; 102, second part; 1, constraint assembly; 11, clamping member; 111, clamping surface; 112, connecting member; 1121, stopper; 113, presser foot; 1131, arc portion; 1132, plane portion; 114, main body; 12, fixing seat; 13, elastic member; 2, heat-conducting support member; 21, groove; 3, cooling assembly; 31, cooling channel; 311, liquid inlet channel; 312, liquid outlet channel; 32, adapter; 321, conversion channel; 322, ear; 4, bracket; 41, support portion; 42, adjustment portion; 421, limit portion. DETAILED DESCRIPTION

[0042] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided to make the present invention more comprehensive and complete and to fully convey the concepts of example embodiments to those skilled in the art. The same reference numerals in the figures represent the same or similar structures, and thus their repeated description will be omitted.

[0043] The words expressing positions and directions described in the present invention are all explained with reference to the accompanying drawings as examples, but they can be changed as needed, and all such changes are included in the protection scope of the present invention.

[0044] like Figure 1 and Figure 2As shown, the present invention provides a welding deformation auxiliary control device, which is used to assist in controlling the deformation of the component to be welded 100 when the component to be welded 100 is welded, and at the same time can reduce the internal stress generated when the component to be welded 100 is welded. Among them, the component to be welded 100 is a component that needs to be welded, and the component to be welded 100 may include a first part 101 and a second part 102, the first part 101 and the second part 102 are butt-jointed, and the butt joint of the first part 101 and the second part 102 forms a welded part that needs to be welded. The first part 101 and the second part 102 can be an integrated structure, or the first part 101 and the second part 102 are two independent structures. The component to be welded 100 can be a part used on a superconducting magnet, and can specifically be made of metal such as stainless steel. The welding deformation auxiliary control device includes a constraint component 1, a heat-conducting support 2, and a cooling component 3. The constraint assembly 1 , the heat-conducting support member 2 and the cooling assembly 3 are used together to control the deformation of the component 100 to be welded, and are also used to reduce the internal stress generated during welding of the component 100 to be welded. In addition, the welding deformation auxiliary control device may also include a bracket 4 .

[0045] The constraint assembly 1 is used to constrain the component to be welded 100, so as to apply mechanical constraints to the component to be welded 100, thereby ensuring that the component to be welded 100 is maintained at the welding position, and controlling the flatness of the welding surface of the component to be welded 100. The welding position is the position where the component to be welded 100 needs to be installed during the welding operation. By maintaining the component to be welded 100 at the welding position, it can be ensured that the assembly gap between the component to be welded 100 and the constraint assembly 1 and the assembly gap between the first part 101 and the second part 102 in the component to be welded 100 meet the requirements.

[0046] The constraint assembly 1 may specifically include a pressing member 11, a fixing seat 12, and an elastic member 13 connecting the pressing member 11 and the fixing seat 12. Figure 1 and Figure 4 The pressing member 11 is used to press the component to be welded 100 to apply mechanical constraints to the component to be welded 100, so that the welding surface of the component to be welded 100 is flat and maintained at the desired welding position. The first end of the pressing member 11 can be connected to the elastic member 13, and the second end of the pressing member 11 can be connected to the bracket 4, and the pressing member 11 can move relative to the bracket 4 under the action of the elastic member 13, thereby changing the position of the pressing member 11 and allowing the pressing member 11 to be pressed against the component to be welded 100. The pressing member 11 can be provided with a pressing surface 111, and the pressing surface 111 is used to press and fit against the component to be welded 100, and the pressing surface 111 can specifically be pressed near the part to be welded of the component to be welded 100. The pressing surface 111 can be the bottommost surface of the pressing member 11, and the pressing surface 111 can be provided on the side of the pressing member 11 away from the first end of the pressing member 11.

[0047] Reference Figure 2 and Figure 4 In some specific embodiments, the pressing surface 111 can be two surfaces separated from each other. The two surfaces are pressed on opposite sides of the part 100 to be welded. For example, one surface is pressed on the first part 101 of the part 100 to be welded, and the other surface is pressed on the second part 102 of the part 100 to be welded, and both surfaces are adjacent to the joint between the first part 101 and the second part 102, that is, adjacent to the part to be welded. Specifically, the pressing member 11 includes a pair of presser feet 113 arranged at intervals, and the pair of presser feet 113 are suspended and used to be pressed on opposite sides of the welding position of the part 100 to be welded, for example, one presser foot 113 is located above the first part 101 of the part 100 to be welded, and the other presser foot 113 is located above the second part 102 of the part 100 to be welded, and the bottom surface of each presser foot 113 respectively forms a part of the pressing surface 111, and the bottom surfaces of the two presser feet 113 are separated from each other, and the bottom surfaces of the two presser feet 113 together constitute the pressing surface 111.

[0048] Among them, an empty area can be formed between the two pressure feet 113, and the empty area is located above the welding position of the component 100 to be welded. Therefore, the empty area formed between the two pressure feet 113 can reserve space for the welding operation of the component 100 to be welded, so as to facilitate the welding operation.

[0049] Reference Figure 4In some specific embodiments, the presser foot 113 may include a plane portion 1132 and an arc portion 1131 bent upward from the plane portion 1132. The plane portion 1132 is a flat plate structure as a whole, and the bottom surface of the plane portion 1132 forms a pressing surface 111. The plane portions 1132 of a pair of presser feet 113 are used together to press the component to be welded 100. One end of the plane portion 1132 is integrally connected to the main body 114 of the presser foot 113, and the other end of the plane portion 1132 is connected to the arc portion 1131. The arc portion 1131 is located at the free end of the pressing member 11. When the component 100 to be welded is placed under the presser foot 113, the presser foot 113 can be lifted first, and then the component 100 to be welded can be placed; or, the component 100 to be welded can be pushed under the presser foot 113. At this time, the component 100 to be welded will first abut against the arc portion 1131 and be guided by the arc portion 1131 along the welding direction, and the presser foot 113 is gradually lifted up by the curved surface structure of the arc portion 1131 and moved to the bottom of the plane portion 1132 and then pressed by the clamping member 11. The setting of the arc portion 1131 can reduce the resistance generated by the relative movement between the clamping member 11 and the component 100 to be welded when the component 100 to be welded is installed and when the clamping member 11 is adjusted in the welding direction, so as to reduce the travel resistance of the clamping member 11 and avoid jamming of the clamping member 11 during the travel process. Among them, the welding direction is the working direction when the component 100 to be welded needs to be welded, specifically the extension direction of the welded part of the component 100 to be welded.

[0050] Reference Figure 2 and Figure 3 , the fixing seat 12 is arranged below the pressing surface 111, and the position of the fixing seat 12 remains relatively fixed in the welding deformation auxiliary control device. When the elastic member 13 connects the fixing seat 12 and the pressing member 11, the elastic member 13 may have a certain amount of pre-extension. Since the position of the fixing seat 12 remains fixed, the elastic member 13 will have a tendency to shrink and drive the pressing member 11 to move toward the fixing seat 12, that is, move downward, so that the pressing member 11 can automatically move down to press the component to be welded 100. Among them, the elastic member 13 can be specifically a spring, and hooks are provided at opposite ends of the spring. The fixing seat 12 is provided with a through hole for cooperating with one hook of the elastic member 13, and the main body 114 of the pressing member 11 is provided with a through hole cooperating with another hook of the elastic member 13, so that the elastic member 13 is connected to the fixing seat 12 and the pressing member 11 respectively. The extension direction of the elastic member 13 intersects with the extension direction of the main body 114 of the clamping member 11, thereby making the overall structure of the welding deformation auxiliary control device more compact. The clamping member 11 can automatically obtain the force applied by the elastic member 13 without the need for manual force to be directly applied to the clamping member 11, making the operation easier.

[0051] In the existing auxiliary tools for controlling welding deformation, when the component 100 to be welded is pressed, a pressing plate is used to completely cover or substantially completely cover the component 100 to be welded in the welding direction, that is, the length of the pressing plate is the same or substantially the same as the length of the component 100 to be welded in the welding direction. Setting the length of the pressing plate to be the same or substantially the same as the length of the component 100 to be welded in the welding direction will result in a larger volume of the pressing plate and the auxiliary tool, increase the cost of the auxiliary tool, and be inconvenient to install the auxiliary tool; during welding, a longer pressing plate may also interfere with the welding operation. The welding direction is the extension direction of the part to be welded 100 to be welded.

[0052] In the present application, the pressing member 11 can be arranged to be movable along the welding direction, so that the pressing member 11 can be installed at multiple positions of the bracket 4 along the welding direction, and the pressing member 11 can achieve the pressing of the component to be welded 100 at any one of the multiple positions, so that the pressing member 11 can be moved multiple times to press the multiple positions of the component to be welded 100 along the welding direction. The pressing member 11 can be specifically movable along the welding direction. The pressing member 11 can press one part of the component to be welded 100, and after the welding is completed at this place, the pressing member 11 can be moved to another part of the component to be welded 100 along the welding direction to weld another part of the component to be welded 100, and so on, and the different positions of the component to be welded 100 along the welding direction can be gradually pressed by the continuous movement of the pressing member 11. Therefore, in the present application, the clamping piece 11 does not need to be provided with a larger clamping surface 111 to completely or substantially completely cover the part to be welded 100 along the welding direction. In the present application, the clamping piece 11 can be moved in the welding direction to achieve effective mechanical constraints on the part to be welded 100 while effectively reducing the volume of the clamping piece 11. It can also avoid interference with the welding operation when the volume of the clamping piece 11 is too large, thereby improving the efficiency of the welding operation.

[0053] Reference Figures 2 to 4In some specific embodiments, the bracket 4 is provided with a limiting portion 421, and the pressing member 11 includes a connecting member 112 and a main body 114. The main body 114 of the pressing member 11 is used to connect the presser foot 113 and the connecting member 112. For example, one end of the main body 114 of the pressing member 11 is integrally connected to the presser foot 113, and the other end of the main body 114 is sleeved on the connecting member 112, specifically, it is interference fit with the connecting member 112. The connecting member 112 can be connected to the limiting portion 421, so that the limiting portion 421 can limit the movement of the connecting member 112, specifically, limit the movement of the connecting member 112 in the positive direction or the reverse direction along the welding direction, and then limit the movement of the pressing member 11 along the welding direction, so as to ensure that the pressing member 11 can be stably pressed on the component 100 to be welded. At the same time, the connecting member 112 can rotate on the limiting portion 421. At this time, due to the limitation of the limiting portion 421, the relative position of the connecting member 112 and the part to be welded 100 along the welding direction remains fixed, and the rotation of the connecting member 112 can also make the clamping member 11 rotate with the connecting member 112 as the axis, thereby generating movement relative to the part to be welded 100 in the up and down direction, i.e., the first direction, and then adjusting the position of the clamping member 11 so that the part to be welded 100 can be installed under the clamping member 11 and the clamping member 11 can clamp the part to be welded 100. Among them, the connecting member 112 can be specifically a rotating shaft, and the limiting portion 421 can be specifically a groove adapted to the rotating shaft, the axis of the rotating shaft is parallel to the axis of the limiting portion 421 and both are perpendicular to the welding direction, and the rotating shaft can be installed in the groove formed by the limiting portion 421 to be limited by the wall forming the groove, thereby realizing the limitation of the clamping member 11 along the welding direction.

[0054] In order to enable the clamping member 11 to be installed at multiple positions of the bracket 4, the bracket 4 may be provided with multiple limiting portions 421, and the multiple limiting portions 421 are arranged at intervals along the welding direction. The connecting member 112 of the clamping member 11 can be connected to any limiting portion 421 to be installed at multiple positions of the bracket 4 along the welding direction, so that the clamping member 11 can be pressed at multiple positions of the component 100 to be welded along the welding direction.

[0055] Reference Figure 2 and Figure 6 The bracket 4 may specifically include a supporting portion 41 and an adjusting portion 42. The adjusting portion 42 is arranged in parallel with the heat-conducting supporting member 2, and the supporting portion 41 is connected between the adjusting portion 42 and the heat-conducting supporting member 2. Figure 4The support portion 41, the adjustment portion 42, and the heat-conducting support member 2 integrally form a side U-shaped structure with an opening toward one side, and the opening is for the component 100 to be welded to be inserted to reach different positions. A fixing seat 12 may be formed on the support portion 41, and the support portion 41 may be perpendicular to the adjustment portion 42, for example, the support portion 41 is vertically arranged, and the adjustment portion 42 is horizontally arranged. Among them, the support portion 41 is used to abut against one end of the component 100 to be welded to prevent the component 100 to be welded from sliding out of the end of the side U-shaped structure opposite to the opening, and may include two support columns parallel to each other, the two support columns are spaced apart in a second direction perpendicular to the welding direction and the first direction, and a space for the pressing member 11 to rotate may be formed between the two support columns, and a space for accommodating the fixing seat 12 may be formed at the same time.

[0056] The length direction of the adjusting portion 42 is parallel to the welding direction, and the adjusting portion 42 is hollowed out to form a hollowed-out portion that is closed on all sides and hollow. A plurality of spaced limiting portions 421 are formed on the hollowed-out portion of the adjusting portion 42, and each limiting portion 421 can be used to connect with the connecting member 112 of the pressing member 11. Among them, the adjusting portion 42 can be provided with a pair, and the pair of adjusting portions 42 are arranged in parallel and spaced, for example, the pair of adjusting portions 42 can be spaced along a second direction perpendicular to the welding direction and the first direction. The spacing area formed between the pair of adjusting portions 42 is located above the welding position of the component 100 to be welded. A plurality of limiting portions 421 can be respectively provided on each adjusting portion 42. The limiting portions 421 on a pair of adjusting portions 42 are arranged one by one, that is, the limiting portion 421 of one adjusting portion 42 is coaxial with the corresponding limiting portion 421 in the other adjusting portion 42, so that the corresponding pair of limiting portions 421 can be connected to the connecting member 112 at the same time and used to limit the connecting member 112 together. The spaced area between the pair of adjusting portions 42 can be used to form the connection position between the main body 114 of the pressing member 11 and the connecting member 112, so as to facilitate the connection operation between the main body 114 and the connecting member 112 and simplify the connection structure between the main body 114 and the connecting member 112. After the pressing member 11 is held upward by the component 100 to be welded, the lower end surface of the adjusting portion 42 is configured to limit the displacement of the pressing member 11 moving upward, and the lower end surface of the adjusting portion 42 can be used to hold the upper end of the presser foot 113 to prevent the pressing member 11 from moving upward excessively, thereby protecting the elastic member 13 and preventing the elastic member 13 from being overstretched.

[0057] Reference Figure 3In order to prevent the connection member 112 from moving relative to the bracket 4 along the axis direction of the connection member 112, the connection member 112 may be connected to a pair of stoppers 1121, which are arranged on opposite sides of the bracket 4 along the extension direction of the connection member 112, so that the pair of adjustment parts 42 of the bracket 4 are located between the pair of stoppers 1121, and each stopper 1121 may abut against the outer side of an adjustment part 42 to limit the relative movement of the connection member 112 and the bracket 4 along the extension direction of the connection member 112. The stopper 1121 may be arranged on the connection member 112 with an interference sleeve.

[0058] Reference Figure 2 , the heat-conducting support member 2 is arranged on the side of the component 100 to be welded away from the constraint assembly 1 to form a welding pad to control the heat input, and the heat-conducting support member 2 is used to support the component 100 to be welded, so that the component 100 to be welded is clamped and fixed by the heat-conducting support member 2 and the clamping member 11 of the constraint assembly 1. In addition, the heat-conducting support member 2 can be used to transfer heat with the component 100 to be welded to absorb the heat generated by the component 100 to be welded during welding. Among them, the heat-conducting support member 2 can be made of a material with good thermal conductivity, for example, the heat-conducting support member 2 is a copper gasket. The heat-conducting support member 2 can form an integrated structure with the bracket 4 to facilitate the disassembly and processing of the welding deformation auxiliary control device. The use of the heat-conducting support member 2 to conduct heat with the component 100 to be welded can increase the heat dissipation area, thereby improving the heat dissipation effect of the component 100 to be welded, and can disperse the heat of the component 100 to be welded to avoid excessive local heat concentration in the component 100 to be welded, thereby reducing the thermal deformation and internal stress of the component 100 to be welded.

[0059] The heat-conducting support member 2 may also be provided with a groove 21, which may be located on the back of the welding position of the component 100 to be welded. The groove 21 may be used to accommodate structures such as welds and protrusions on the back of the component 100 to be welded, so as to prevent the structure on the back of the welding position of the component 100 to be welded from affecting the full contact between the component 100 to be welded and the heat-conducting support member 2, thereby ensuring that the welding surface of the component 100 to be welded can remain flat, and the weld formed on the front side of the component 100 to be welded after welding can be made more beautiful. In addition, the provision of the groove 21 may form a semi-enclosed structure on the back of the weld of the component 100 to be welded, so as to reduce the contamination of the weld, control welding oxidation, and reduce thermal stress and deformation of the welding part.

[0060] The cooling assembly 3 is connected to the heat-conducting support 2, and the cooling assembly 3 can be used to absorb the heat of the heat-conducting support 2, and then the cooling assembly 3 dissipates heat through its own cold circuit cycle. When the component 100 to be welded is welded, the heat generated by the component 100 to be welded is transferred to the heat-conducting support 2, and then the heat of the heat-conducting support 2 is absorbed by the cooling assembly 3, so that the cooling assembly 3 can cool the component 100 to be welded through the heat-conducting support 2, thereby reducing the internal stress generated when the component 100 to be welded is welded and reducing the thermal deformation generated by the component 100 to be welded. There is a continuously flowing coolant in the cold circuit cycle of the cooling assembly 3, and the coolant is discharged after absorbing the heat to complete the heat dissipation.

[0061] The cooling assembly 3 may include a cooling channel 31 and a liquid storage part, and may also include an adapter 32. The cooling channel 31 may be opened in the heat-conducting support part 2, and the cooling channel 31 may be arranged adjacent to the welding position of the component 100 to be welded. The liquid storage part may be used to supply coolant to the cooling channel 31 or to recover the coolant in the cooling channel 31. Specifically, the cooling channel 31 may include an inlet channel 311 and an outlet channel 312, the inlet channel 311 is connected to the liquid storage part and is used to receive the coolant supplied by the liquid storage part, and the outlet channel 312 is connected to the liquid storage part so that the liquid storage part can recover the coolant flowing out of the outlet channel 312. Among them, the coolant may be water or other liquid with good heat absorption performance. The continuous flow of the coolant between the cooling channel 31 and the liquid storage part forms a cold circuit circulation of the cooling assembly 3.

[0062] Reference Figure 2 and Figure 5 , the adapter 32 is connected to the heat-conducting support member 2, and a conversion channel 321 for the coolant to flow from the liquid inlet channel 311 to the liquid outlet channel 312 is formed in the adapter 32. Specifically, the liquid inlet channel 311 and the liquid outlet channel 312 respectively penetrate the heat-conducting support member 2 along the welding direction, one end of the liquid inlet channel 311 is connected to the liquid storage member, and the other end is connected to the conversion channel 321. One end of the liquid outlet channel 312 is connected to the conversion channel 321, and the other end is connected to the liquid storage member. The coolant flows from the liquid storage component into the liquid inlet channel 311, and then flows out through the conversion channel 321 and the liquid outlet channel 312. The coolant absorbs heat when flowing in the liquid inlet channel 311, the liquid outlet channel 312 and the conversion channel 321. The coolant after absorbing heat is discharged to the liquid storage component so that the heat absorbed by the coolant can be discharged to the liquid storage component. At the same time, the liquid storage component continuously supplies cooled coolant or new coolant to the liquid inlet channel 311, so that the cooling component 3 can continuously absorb heat, ensuring that the cooling component 3 can continuously cool the component 100 to be welded during the welding process.

[0063] The adapter 32 may be fixedly mounted on one end of the heat-conducting support member 2 by a fixing member such as a bolt. Specifically, the adapter 32 may include a pair of ears 322, which are arranged on opposite sides of the heat-conducting support member 2, and each ear 322 is fixed to the heat-conducting support member 2 by one or more bolts, so that the adapter 32 can be fixedly mounted on the heat-conducting support member 2. The adapter 32 may be made of the same material as the heat-conducting support member 2, for example, the adapter 32 is a copper adapter.

[0064] To avoid leakage of coolant at the connection between the conversion channel 321 and the liquid inlet channel 311 and the liquid outlet channel 312, the connection between the conversion channel 321 and the liquid inlet channel 311 and the liquid outlet channel 312 is sealed with seals, which can be specifically O-type rubber rings.

[0065] When welding is required on the component 100 to be welded, the component 100 to be welded is placed under the pressing member 11. The component 100 to be welded lifts up the pressing member 11 so that the elastic member 13 connected to the pressing member 11 is in an extended state. The resilience of the elastic member 13 drives the pressing member 11 to apply force to the component 100 to be welded and automatically press the component 100 to be welded, so as to mechanically constrain the component 100 to be welded, thereby ensuring that the welding plane of the component 100 to be welded is flat. The liquid storage member supplies coolant to the cooling channel 31 and allows the coolant to flow continuously in the cooling channel 31. When welding is performed on the part of the component 100 to be welded that is pressed by the pressing member 11, part of the heat generated by the component 100 to be welded during the welding process is conducted to the heat-conducting support member 2 and dissipated to the outside, and part of the heat is absorbed by the cooling component 3 and taken away with the flow of the coolant, thereby effectively reducing the thermal deformation and internal stress generated by the component 100 to be welded during welding. When a part of the component 100 to be welded is welded, the connecting piece 112 of the clamping piece 11 can be matched with another limiting portion 421, so that the clamping piece 11 clamps another position of the component 100 to be welded and performs the welding operation, and the operation is repeated until the welding is completed. The direction of the force applied by the clamping piece 11 to the component 100 to be welded is not in the same direction as the rebound force of the elastic piece 13, so that the overall structure of the welding deformation auxiliary control device is more compact and occupies a smaller space.

[0066] By using the constraint component 1 for continuous mechanical constraint, the heat conductive support 2 for heat conduction, the cooling component 3 for liquid cooling and other combined effects, the heat input and the heat affected zone generated by the component 100 to be welded during welding can be reduced, thereby greatly controlling the welding shrinkage, reducing the deformation of the component 100 to be welded due to heat input, and improving the welding accuracy, so that the welding deformation auxiliary control device of the present application can be used in welding operations of components such as medical devices and high-precision instruments to meet the high-precision requirements of components such as medical devices and high-precision instruments; and, operations such as heat conduction and liquid cooling of the component 100 to be welded can also reduce the internal stress of the component 100 to be welded due to welding, and improve the quality and performance of the component 100 to be welded after welding.

[0067] The present invention also provides a welding deformation control method, which is executed by using the welding deformation auxiliary control device mentioned above. The welding deformation control method includes steps S01 to S03.

[0068] Step S01: mechanically constraining the component 100 to be welded by using the clamping member 11 of the constraint assembly 1, so as to constrain the component 100 to be welded in a welding position; the side of the component 100 to be welded away from the constraint assembly 1 is supported by the heat conductive support member 2, so that the heat conductive support member 2 forms a welding pad to control heat input, and the heat conductive support member 2 and the component 100 to be welded are heat-conducted;

[0069] Step S02: The cooling assembly 3 forms a cold circuit cycle to cool down the component to be welded 100 through the heat-conducting support member 2;

[0070] Step S03: After welding one position of the component 100 to be welded, move the pressing member 11 along the welding direction so that the pressing member 11 presses another position of the component 100 to be welded and welds; repeat this step until welding of the component 100 to be welded is completed.

[0071] In step S01, the clamping member 11 is lifted and drives the elastic member 13 to extend. The reset tendency of the elastic member 13 causes the elastic member 13 to generate a driving force to drive the clamping member 11 to move downward, so that the clamping member 11 is pressed against the component to be welded 100 located below the clamping member 11, thereby applying mechanical constraints to the component to be welded 100, controlling the installation accuracy of the component to be welded 100 and the flatness of the welding surface of the component to be welded 100.

[0072] In step S02, the coolant flows in the liquid inlet channel 311, the liquid outlet channel 312, and the conversion channel 321 connected to the liquid inlet channel 311 and the liquid outlet channel 312 formed on the heat-conducting support member 2, so as to form a cold circuit circulation to take away the heat of the heat-conducting support member 2, cool down the component 100 to be welded, and reduce the thermal deformation and internal stress of the component 100 to be welded.

[0073] In step S03, the connecting member 112 is matched with different limiting portions 421. Whenever the connecting member 112 is matched with one limiting portion 421, the pressing member 11 can press a position of the component 100 to be welded, and welding can be performed on the position; when the connecting member 112 is matched with another limiting portion 421, the pressing member 11 moves to another position along the welding direction and presses another position of the component 100 to be welded, and welding can be performed on the other position. By matching the connecting member 112 with different limiting portions 421, the pressing member 11 can be pressed on multiple positions of the component 100 to be welded along the welding direction and welding can be performed on the multiple positions respectively.

[0074] Among them, when the connecting member 112 is matched with the limiting portion 421 closest to the fixing seat 12, and the clamping member 11 is pressed against the component to be welded 100, the elastic member 13 is in an extended state. When the connecting member 112 is matched with other limiting portions 421, the elastic member 13 is further stretched to ensure that the elastic member 13 can drive the clamping member 11 to press the component to be welded 100 when the clamping member 11 moves to any position along the welding direction.

[0075] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, substitute and modify the above embodiments within the scope of the invention without departing from the principles and purpose of the present invention. All such changes should fall within the scope of protection of the claims of the present invention.

Claims

1. A welding deformation auxiliary control device, used for auxiliary control of the deformation of a part to be welded (100) when welding the part to be welded (100), characterized in that: The welding deformation auxiliary control device comprises: A constraint assembly (1) comprises a pressing member (11), a fixing seat (12), and an elastic member (13) connecting the pressing member (11) and the fixing seat (12), wherein the pressing member (11) is provided with a pressing surface (111) for pressing the component to be welded (100), the fixing seat (12) is arranged below the pressing surface (111), and the elastic member (13) is used to drive the pressing surface (111) to move toward the fixing seat (12) so that the pressing surface (111) presses the component to be welded (100) at a welding position; A bracket (4), the bracket (4) comprising a limiting portion (421) and the fixing seat (12), the pressing member (11) comprising a connecting member (112); the connecting member (112) is connected to the limiting portion (421) and can rotate relative to the limiting portion (421) to adjust the position of the pressing member (11); the pressing member (11) can be installed at multiple positions of the bracket (4) along the welding direction to respectively press multiple positions of the component to be welded (100); A heat-conducting support member (2) is arranged on a side of the component to be welded (100) away from the pressing surface of the constraint assembly (1) to form a welding pad to control heat input, and the heat-conducting support member (2) is used to support the component to be welded (100) and to conduct heat with the component to be welded (100); A cooling component (3) is connected to the heat-conducting support member (2), and the cooling component (3) is used to absorb the heat of the heat-conducting support member (2) and dissipate heat through a cold circuit circulation of the cooling component (3), so as to cool the component to be welded (100) through the heat-conducting support member (2).

2. The welding deformation auxiliary control device according to claim 1, characterized in that: The cooling assembly (3) comprises a cooling channel (31) and a liquid storage component. The cooling channel (31) is opened in the heat-conducting support component (2). The liquid storage component is used to supply or recover cooling liquid into the cooling channel (31).

3. The welding deformation auxiliary control device according to claim 2, characterized in that: The cooling channel (31) comprises an inlet channel (311) for receiving cooling liquid and an outlet channel (312) for discharging cooling liquid. The cooling assembly (3) further comprises an adapter (32), wherein the adapter (32) is connected to the heat-conducting support member (2), and a conversion channel (321) is formed in the adapter (32) for allowing cooling liquid to flow from the inlet channel (311) to the outlet channel (312).

4. The welding deformation auxiliary control device according to claim 3, characterized in that: The liquid inlet channel (311) and the liquid outlet channel (312) respectively penetrate the heat-conducting support member (2) along the extension direction of the to-be-welded portion of the to-be-welded component (100); the adapter (32) is arranged at the end of the heat-conducting support member (2); and the conversion channel (321) is respectively connected to the liquid inlet channel (311) and the liquid outlet channel (312); And / or, the connection between the conversion flow channel (321) and the liquid inlet flow channel (311) and the liquid outlet flow channel (312) is sealed by using sealing members respectively.

5. The welding deformation auxiliary control device according to claim 1, characterized in that: The connecting member (112) may specifically be a rotating shaft, the limiting portion (421) is a groove adapted to the connecting member (112), and the connecting member (112) is installed in the limiting portion (421).

6. The welding deformation auxiliary control device according to claim 5, characterized in that: The connecting member (112) is also connected to a pair of stoppers (1121), and the pair of stoppers (1121) are arranged on opposite sides of the bracket (4) along the extension direction of the connecting member (112) to limit the relative movement of the connecting member (112) and the bracket (4) along the extension direction of the connecting member (112); And / or, the extension direction of the connecting member (112) is perpendicular to the extension direction of the to-be-welded portion of the to-be-welded component (100).

7. The welding deformation auxiliary control device according to claim 1, characterized in that: The bracket (4) comprises a supporting portion (41) and an adjusting portion (42); the supporting portion (41) is provided with the fixing seat (12), and the supporting portion (41) is connected between the adjusting portion (42) and the heat-conducting supporting member (2); the adjusting portion (42) is provided with a plurality of limiting portions (421), and the plurality of limiting portions (421) are arranged at intervals along the extension direction of the to-be-welded portion of the to-be-welded component (100); the pressing member (11) can be connected to any one of the limiting portions (421) so that the pressing member (11) is limited to a plurality of positions of the bracket (4) and the plurality of positions of the to-be-welded component (100) are respectively pressed.

8. The welding deformation auxiliary control device according to claim 7, characterized in that: A pair of the adjusting parts (42) are provided, the pair of the adjusting parts (42) are arranged in parallel and spaced apart, the limiting parts (421) of the pair of the adjusting parts (42) are arranged in one-to-one correspondence, and the corresponding pair of limiting parts (421) are used together to limit the connecting member (112).

9. The welding deformation auxiliary control device according to claim 1, characterized in that: The heat-conducting support member (2) is provided with a groove (21), and the groove (21) is located on the back side of the welding position of the component to be welded (100); the heat-conducting support member (2) is a copper gasket; And / or, the pressing member (11) comprises a pair of spaced-apart pressing feet (113), the pair of pressing feet (113) being pressed on opposite sides of the welding position of the component to be welded (100); the pressing feet (113) comprising an arc portion (1131) and a plane portion (1132) connected to each other, the plane portions (1132) of the pair of pressing feet (113) being used together to press the component to be welded (100), the arc portion (1131) being arranged on one side of the plane portion (1132), and the arc portion (1131) being bent upward from the plane portion (1132), and the arc portion (1131) being used to reduce the travel resistance of the pressing member (11).

10. A welding deformation control method, characterized in that: The welding deformation auxiliary control device according to any one of claims 1 to 9 is used to implement the welding deformation control method, which includes: A clamping member of a constraint assembly is used to apply mechanical constraints to the component to be welded, so as to constrain the component to be welded in a welding position; a side of the component to be welded away from the constraint assembly is supported by a heat-conducting support member, so that the heat-conducting support member forms a welding pad to control heat input, and the heat-conducting support member and the component to be welded are heat-conducted; The cooling assembly forms a cold circuit cycle to cool the components to be welded through the heat-conducting support member; After welding is completed on one position of the component to be welded, the pressing member is moved along the welding direction so that the pressing member presses another position of the component to be welded and welding is performed; this step is repeated until welding is completed on the component to be welded.

11. The welding deformation control method according to claim 10, characterized in that: The “using a clamping member of a constraint assembly to apply mechanical constraints to the parts to be welded” specifically includes: The pressing member is lifted, and the pressing member drives the elastic member to extend, and the elastic member generates a driving force to drive the pressing member to move downward so that the pressing member is pressed against the component to be welded.

12. The welding deformation control method according to claim 10, characterized in that: The “cooling assembly forms a cold circuit cycle to cool the component to be welded through the heat-conducting support member” includes: An inlet channel and an outlet channel are provided on the heat-conducting support, and a conversion channel connecting the inlet channel and the outlet channel is provided. The coolant flows into the inlet channel and flows to the outlet channel through the conversion channel, and then flows out from the outlet channel to form a cold circuit circulation.

13. The welding deformation control method according to claim 10, characterized in that: The "moving the pressing member along the welding direction so that the pressing member presses another position of the part to be welded and performs welding" includes: A plurality of limiting parts are provided which are arranged in sequence and at intervals along the welding direction. A connecting part which can be matched with the limiting part is provided at one end of the clamping part. The connecting part is matched with different limiting parts so that the clamping part can be pressed on multiple positions of the parts to be welded along the welding direction.

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