Positioning welding tool for electric vehicle frame production

Abstract

The invention relates to the technical field of electric vehicle part manufacturing, in particular to a positioning welding tool for electric vehicle frame production, which comprises a bottom plate, a direction adjusting table arranged on the bottom plate, a plurality of groups of clamping devices mounted on the direction adjusting table at equal intervals, and a vertical plate mounted on the bottom plate and positioned in front of the direction adjusting table, the abutting piece is installed at the front end of the manual pressure device, the two sets of locking and clamping mechanisms are arranged on the bottom plate side by side and located in front of the vertical plate, the first pipe fittings are clamped in the two sets of locking and clamping mechanisms, the second pipe fittings are welded to the first pipe fittings, and the third pipe fittings are located on the multiple sets of clamping and fixing devices. And the third pipe fitting is attached to the second pipe fitting, and the slowing and eliminating mechanism is placed on the bottom plate, so that more types of pipe fittings can be handled, the flexible production capacity is effectively improved, the frequency of replacing a positioning tool is reduced as much as possible, and the production efficiency is improved through excellent positioning adaptability.

Description

Technical Field

[0001] The present invention relates to the technical field of electric vehicle component manufacturing, and more specifically, to a positioning welding tooling for the production of an electric vehicle frame. Background Art

[0002] On an electric vehicle, the frame is a key component that bears the power system and the body structure, and its welding quality directly affects the safety and service life of the whole vehicle.

[0003] The frame is usually composed of multiple pipe fittings or profiles. During production, it is necessary to sequentially weld multiple pipe fittings or profiles into the frame step by step. Therefore, in the last welding step, it is necessary to position each pipe fitting or profile to ensure the smooth completion of welding. However, there are some problems and defects in the existing positioning tooling:

[0004] 1. The shape of the frame is not regular and relatively complex. Therefore, the steel pipe fittings have different curvature radii, asymmetric structures, complex spatial angles or multi-angle connections, etc. Traditional positioning tooling is difficult to adapt to these changes and difficult to fit its geometric contour, resulting in a lack of positioning and clamping effect, and thus inaccurate positioning between the steel pipe fittings, which is extremely likely to affect the welding quality;

[0005] 2. Traditional tooling uses fixed rigid positioning and clamping modules, which are only suitable for single-curvature bent pipes or single vehicle models. When switching to the production of frames of different models, it is necessary to make a large replacement of the positioning template, and the adjustment takes a long time, seriously affecting the efficiency. The flexible production capacity is limited and the positioning adaptability is insufficient;

[0006] 3. The local high temperature during the welding process will cause the pipe fittings to thermally expand, which will not only cause welding misalignment, but also cause the pipe fittings to deform, thus requiring additional correction processes later. This prolongs the single-piece processing cycle, and the uneven stress distribution caused by the deformation will affect the service life of the finally produced frame. Summary of the Invention

[0007] The purpose of the present invention is to provide a positioning welding tooling for the production of an electric vehicle frame to solve the above problems.

[0008] To achieve the above object, the present invention provides a positioning and welding tooling for the production of an electric vehicle frame, including: a bottom plate, an orientation table disposed on the bottom plate, a plurality of groups of clamping devices equidistantly installed on the orientation table, a vertical plate installed on the bottom plate and located in front of the orientation table, a manual pressure device installed on the vertical plate, a pressing member installed at the front end of the manual pressure device, two groups of locking clamp mechanisms arranged side by side on the bottom plate and located in front of the vertical plate, a first pipe fitting clamped in the two groups of locking clamp mechanisms, a second pipe fitting welded to the first pipe fitting, a third pipe fitting placed on the plurality of groups of clamping devices, and the third pipe fitting is in contact with the second pipe fitting, and a shock absorption mechanism placed on the bottom plate;

[0009] The pressing member abuts against the second pipe fitting from the rear, wherein:

[0010] The plurality of groups of clamping devices are adapted to centripetally clamp the third pipe fitting at multiple points, and the plurality of groups of clamping devices can actively fill the tiny gaps between them and the third pipe fitting to closely fit with the third pipe fitting;

[0011] The orientation table is adapted to drive the plurality of groups of clamping devices to perform various forms of spatial position changes, so that the plurality of groups of clamping devices can clamp flexibly and diversely.

[0012] Further, the clamping device includes a lower support member, the top of the lower support member is cylindrical, two clamping arc surface blocks mirror-hinged on the top of the lower support member, two circular bending members mirror-connected to the lower support member and respectively in contact with the sides of the two clamping arc surface blocks, arc grooves are formed on the two circular bending members, two first sliders and two second sliders slidably installed on the two circular bending members respectively, and the two second sliders are respectively located below the two first sliders, two push rods connecting the two first sliders and the two second sliders respectively, two protruding rods respectively connected to the two second sliders, and a stop rod linearly inserted through the two protruding rods;

[0013] The two first sliders are respectively connected to the two clamping arc surface blocks.

[0014] Further, the clamping device further includes two air-filled bags respectively fitted and installed on the clamping surfaces of the two clamping arc surface blocks, and two air pipes with one ends respectively connected to the two air-filled bags;

[0015] The other ends of the two air pipes are connected to the nozzles of an external high-pressure air pump.

[0016] Further, the orientation table includes a number of first universal balls mounted on the bottom plate in a rectangular array, a number of outer sleeve columns respectively mounted on the number of first universal balls, a number of inner support columns respectively fitted and inserted into the number of outer sleeve columns, a number of first hand-tightening bolts respectively screwed on the tops of the number of outer sleeve columns, and the number of first hand-tightening bolts respectively abut against the sides of the number of inner support columns in the number of outer sleeve columns. The tops of the number of inner support columns are respectively connected with second universal balls, and a movable tabletop mounted on the number of inner support columns through the number of second universal balls;

[0017] The lower support members of the number of sets of the clamping devices are mounted on the movable tabletop.

[0018] Further, the movable tabletop includes an outer frame plate member mounted on the top surfaces of the number of inner support columns, an electromagnetic plate mounted inside the outer frame plate member, and a number of small table bodies adsorbed on the electromagnetic plate at equal intervals;

[0019] The number of small table bodies are sequentially rotatably connected;

[0020] The lower support members of the number of sets of the clamping devices are respectively mounted on one of the small table bodies.

[0021] Further, two rectangular columns are mounted on each of the small table bodies except the one on which the lower support member is mounted, and a clamping member is assembled on the tops of each two rectangular columns;

[0022] The clamping member is pressed downward and attached to the third pipe fitting.

[0023] Further, the buffering and damping mechanism includes a bracket member placed on the bottom plate, a first gooseneck tube mounted on the bracket member, a first hollow arc plate mounted on the end of the first gooseneck tube, and two circulation pipes with one end communicating with the first hollow arc plate at intervals from the back.

[0024] Further, the buffering and damping mechanism further includes a second gooseneck tube mounted on the bracket member side by side with the first gooseneck tube, a second hollow arc plate mounted on the end of the second gooseneck tube, and heating wires are arranged inside the second hollow arc plate;

[0025] The heating wires inside the second hollow arc plate are connected to an external power supply through wires.

[0026] Further, the locking clip mechanism includes a block fixed on the bottom plate, two groove strips arranged on the bottom plate and on both sides of the block, the grooving surfaces of the two groove strips face each other, a clip block slidably mounted between the two groove strips, a round convex block mounted on the back of the clip block, an ear plate fixed on the bottom plate and away from the block, and a second hand-tightening bolt screwed on the ear plate;

[0027] The end of the second hand-tightening bolt is rotatably connected to the round protrusion through a bearing.

[0028] Furthermore, a stopper is provided between the two sets of locking and clamping mechanisms;

[0029] The blocking member abuts against the front side surface of the first pipe member;

[0030] The bottom plate is provided with two groups of upper supporting vertical plates of different heights;

[0031] The middle parts of both sides of the third pipe are respectively clamped on the two groups of upper supporting vertical plates.

[0032] Compared with the prior art, the present invention has the following beneficial effects:

[0033] 1. The positioning welding tooling for the production of electric vehicle frames can complete the positioning of the pipes to be welded through several sets of clamps, manual pressure devices, abutments and two sets of locking clamping mechanisms. In addition, several sets of clamps and two sets of locking clamping mechanisms can adjust the clamping range and actively fill the small gap after clamping, which effectively ensures the positioning and clamping with a high degree of fit, effectively improves the ability to cope with complex geometric contours, ensures the positioning and clamping effect, and thus ensures the precise positioning between pipes;

[0034] 2. The positioning welding tooling for the production of electric vehicle frames can support the spatial position change of several groups of clamps through the turning table, so that several groups of clamps can obtain various flexible clamping forms, and then cope with more types of pipe fittings, effectively improve the flexible production capacity, and reduce the frequency of major replacement of positioning tooling as much as possible, so as to promote production efficiency with excellent positioning adaptability;

[0035] 3. The positioning welding tooling for the production of electric vehicle frames can curb thermal expansion in both active and passive ways through the slow-release mechanism, effectively preventing the occurrence of thermal deformation, thereby avoiding the need to add correction procedures to the frame later, controlling the single-piece processing cycle within a reasonable range, and preventing the service life of the frame from being affected, thereby ensuring production quality;

[0036] 4. The positioning welding tooling for the production of electric vehicle frames not only plays the basic positioning function but also takes into account the control and elimination of the negative impact of welding, effectively improving the actual effect of its own functions. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0038] Figure 1 A perspective view of the present invention is shown;

[0039] Figure 2 A second perspective view of the present invention is shown;

[0040] Figure 3 Shows a third three-dimensional view of the present invention;

[0041] Figure 4 Shows a fourth three-dimensional view of the present invention;

[0042] Figure 5 Shows a fifth three-dimensional view of the present invention;

[0043] Figure 6 Shows a sixth three-dimensional view of the present invention;

[0044] Figure 7 Shows a seventh three-dimensional view of the present invention;

[0045] Figure 8 Shows the present invention Figure 1 An enlarged view of part A;

[0046] Figure 9 Shows the present invention Figure 3 An enlarged view of part B;

[0047] Figure 10 Shows the present invention Figure 5 An enlarged view of part C.

[0048] In the figures, the same reference numerals denote the same structural elements, where:

[0049] 1, bottom plate; 2, steering platform; 21, first universal ball; 22, outer sleeve column; 23, inner support column; 24, first hand-tightening bolt; 25, movable tabletop; 251, outer frame plate member; 252, electromagnetic plate; 253, small table body; 3, clamp; 31, lower support member; 32, clamping arc surface block; 33, circular bending member; 34, first slider; 35, second slider; 36, push rod; 37, protruding rod; 38, stop rod; 39, air-filled balloon; 391, air pipe; 4, vertical plate; 5, manual pressure device; 6, abutting member; 7, locking clip mechanism; 71, latching block; 72, groove strip; 73, clamping block; 74, circular convex block; 75, vertical ear plate; 76, second hand-tightening bolt; 8, first pipe fitting; 9, second pipe fitting; 10, third pipe fitting; 11, damping mechanism; 12, rectangular column; 13, clamping member; 14, support member; 15, first gooseneck tube; 16, first hollow arc plate; 17, circulation pipeline; 18, second gooseneck tube; 19, second hollow arc plate; 20, wire; 26, blocking member; 27, upper supporting vertical plate. Detailed Description of the Invention

[0050] Now, the present invention will be further described in detail with reference to the accompanying drawings. These drawings are all simplified schematic diagrams, only illustrating the basic structure of the present invention in a schematic manner, and therefore only showing the components related to the present invention.

[0051] As shown Figures 1-10 in the figure, a positioning welding tooling for the production of an electric vehicle frame includes: a bottom plate 1, an orientation table 2 disposed on the bottom plate 1, a plurality of groups of clamping devices 3 equally spaced and installed on the orientation table 2, a vertical plate 4 installed on the bottom plate 1 and located in front of the orientation table 2, a manual pressure device 5 installed on the vertical plate 4, a pressing member 6 installed at the front end of the manual pressure device 5, two groups of locking clip mechanisms 7 arranged side by side on the bottom plate 1 and located in front of the vertical plate 4, a first pipe fitting 8 clamped within the two groups of locking clip mechanisms 7, a second pipe fitting 9 welded to the first pipe fitting 8, a third pipe fitting 10 placed on the plurality of groups of clamping devices 3, and the third pipe fitting 10 is in contact with the second pipe fitting 9, and a buffering and damping mechanism 11 placed on the bottom plate 1. The manual pressure device 5 is an existing mechanical device composed of a handle, a lever, etc., and the pressing member 6 is linearly pushed forward by reciprocally pressing down the manual pressure device 5;

[0052] The pressing member 6 abuts against the second pipe fitting 9 from the rear, wherein:

[0053] The plurality of groups of clamping devices 3 are adapted to centripetally clamp the third pipe fitting 10 at multiple points, and the plurality of groups of clamping devices 3 can actively fill the tiny gaps between the third pipe fitting 10 to closely fit with the third pipe fitting 10;

[0054] The orientation table 2 is adapted to drive the plurality of groups of clamping devices 3 to perform various forms of spatial position changes, so that the plurality of groups of clamping devices 3 can perform clamping flexibly and diversely. Before welding, first, the first pipe fitting 8 and the second pipe fitting 9 that have been welded together are placed on the two groups of locking clip mechanisms 7 in a suitable posture, and the first pipe fitting 8 is clamped by the two groups of locking clip mechanisms 7. Subsequently, the pressing member 6 is continuously pushed forward by the manual pressure device 5, and the second pipe fitting 9 is abutted by the pressing member 6 to complete the preliminary positioning;

[0055] The positioning and welding tooling for the production of the electric vehicle frame can complete the positioning of the pipe fittings to be welded through several groups of clamping devices 3, a manual pressure device 5, a resisting member 6, and two groups of locking mechanisms 7. The several groups of clamping devices 3 and the two groups of locking mechanisms 7 effectively ensure high-fitting positioning and clamping in a way that the clamping range is adjustable and small gaps are actively filled after clamping, effectively improving the ability to handle complex geometric profiles, ensuring the positioning and clamping effect, thus ensuring the precise positioning between pipe fittings. The orientation adjustment table 2 can support the position transformation of several groups of clamping devices 3 in space, enabling the several groups of clamping devices 3 to obtain diverse and flexible clamping forms to cope with more types of pipe fittings, effectively improving the flexible production capacity, minimizing the frequency of large replacements of the positioning tooling as much as possible, promoting production efficiency with excellent positioning adaptability. The heat dissipation mechanism 11 can simultaneously suppress thermal expansion in both active and passive ways, effectively preventing thermal deformation, thus avoiding the need for subsequent frame correction processes, controlling the single-piece processing cycle within a reasonable range, and preventing the service life of the frame from being affected, ensuring production quality. While performing the basic positioning function, the positioning and welding tooling for the production of the electric vehicle frame also takes into account the control and elimination of negative impacts on welding, effectively enhancing the actual effect of its own functions.

[0056] Optionally, the clamping device 3 includes a lower support member 31, the top of the lower support member 31 is cylindrical, two clamping arc surface blocks 32 are mirror-hinged on the top of the lower support member 31, two circular bending members 33 are mirror-connected to the lower support member 31 and are respectively in contact with the sides of the two clamping arc surface blocks 32, arc grooves are formed on both of the two circular bending members 33, two first sliders 34 and two second sliders 35 are respectively slidably installed on the two circular bending members 33, and the two second sliders 35 are respectively located below the two first sliders 34, two push rods 36 connecting the two first sliders 34 and the two second sliders 35 respectively, two protruding rods 37 respectively connected to the two second sliders 35, and a stop rod 38 linearly inserted through the two protruding rods 37;

[0057] The two first sliders 34 are connected to the two clamping arc surface blocks 32 respectively. By holding the outer protruding rod 37 and pushing it upward along the arc groove on the round curved member 33, the first slider 34 can be pushed along the arc groove on the round curved member 33 by the second slider 35 and the push rod 36, thereby pushing the corresponding clamping arc surface block 32 to rotate around the hinge point with the lower support member 31 and gradually approaching the third pipe 10 between the two clamping arc surface blocks 32. When one side of the clamping arc surface block 32 is pushed to be close to the third pipe 10, Afterwards, the arc-clamping block 32 on the other side is also pushed to fit tightly against the third pipe fitting 10, and then the stop rod 38 is inserted into the two outer protruding rods 37. Since the movement trajectory of the two outer protruding rods 37 is an arc, the two outer protruding rods 37 cannot move under the restriction of the stop rod 38, thereby achieving the clamping effect. Under the joint action of several groups of clamps 3, the third pipe fitting 10 is positioned and clamped with multiple positioning points, and the clamping range of several groups of clamps 3 is adjustable, which can adapt to more types of third pipe fittings 10, thereby improving the positioning adaptability.

[0058] Optionally, the clamp 3 further includes two inflatable bags 39 respectively mounted on the clamping surfaces of the two clamping arc surface blocks 32, and two air pipes 391 with one end respectively connected to the two inflatable bags 39;

[0059] The other ends of the two air pipes 391 are connected to the air nozzle of an external high-pressure air pump, and all the air pipes 391 of several groups of clamps 3 are connected to a main air pipe, and then the connection between the air pipe 391 and the external high-pressure air pump is realized through the connection between the main air pipe and the external high-pressure air pump. After the clamping of the third pipe 10 by several groups of clamps 3 is completed, the external high-pressure air pump is driven to start pumping air into all the inflatable bags 39, so that the inflatable bags 39 are inflated, and under the pressure of the external high-pressure air pump, the inflatable bags 39 have a certain hardness. In the process of the inflatable bags 39 inflating, the inflatable bags 39 will actively fill the gap between the clamping arc surface block 32 and the third pipe fitting 10, thereby increasing the process of actively filling the small gap to improve the fit between the clamping arc surface block 32 and the third pipe fitting 10, thereby effectively improving the ability of several groups of clamps 3 to cope with complex geometric contours, ensuring the positioning and clamping effect, and ensuring the precise positioning between the pipe fittings.

[0060] Optionally, the steering platform 2 includes a plurality of first universal balls 21 installed on the base plate 1 in a rectangular array, a plurality of outer sleeves 22 respectively installed on the plurality of first universal balls 21, a plurality of inner sleeves 23 respectively fitted and slidably inserted into the plurality of outer sleeves 22, a plurality of first hand-tightening bolts 24 respectively screwed on the tops of the plurality of outer sleeves 22, and the plurality of first hand-tightening bolts 24 respectively abut against the side surfaces of the plurality of inner sleeves 23 in the plurality of outer sleeves 22, the tops of the plurality of inner sleeves 23 are respectively connected with second universal balls, and a movable table 25 installed on the plurality of inner sleeves 23 through the plurality of second universal balls;

[0061] The lower support members 31 of the plurality of groups of the clamps 3 are installed on the movable table 25. With the support of the plurality of first universal balls 21 and the plurality of second universal balls, the movable table 25 can be twisted and moved arbitrarily within the space. When the movable table 25 is moved, the plurality of inner pillars 23 synchronously slide up and down in the plurality of outer sleeves 22 to different degrees, ensuring that the movable table 25 is smoothly twisted and moved. After the position of the movable table 25 is adjusted, all the first hand-tightening bolts 24 are tightened in sequence to tighten the plurality of inner pillars 23 to restrict the movable table 25. , thereby fixing the movable table 25, so that several groups of clamps 3 can be highly freely changed in position, so as to obtain more optional clamping angles to cope with more types of third pipes 10 and other positioning angle requirements, ensuring that even when the shape of the production frame changes, the third pipe 10 can be accurately positioned to make it connect with the first pipe 8 and the second pipe 9, effectively improving the flexible production capacity, reducing the frequency of major replacement of the positioning tooling as much as possible, and promoting production efficiency with excellent positioning adaptability.

[0062] Optionally, the movable table 25 includes an outer frame plate 251 installed on the top surfaces of the inner pillars 23, an electromagnetic plate 252 installed in the outer frame plate 251, and a plurality of small platforms 253 adsorbed on the electromagnetic plate 252 at equal intervals, the electromagnetic plate 252 is a plate-shaped electromagnet connected to an external power source through wires, and the plurality of small platforms 253 are all made of metal;

[0063] The plurality of small platforms 253 are rotatably connected in sequence;

[0064] The lower support members 31 of several groups of the clamping devices 3 are respectively installed on one of the small table bodies 253, so that the several small table bodies 253 can rotate relative to each other, thereby ensuring that the angles of several groups of clamping devices 3 can be adjusted respectively, and further enabling more clamping angles to be selected, ensuring that each clamping device 3 can be adjusted according to the specific shape of the third pipe fitting 10, further enhancing the flexible production capacity and the positioning adaptability of the positioning and welding tooling. After the adjustment of several groups of clamping devices 3 is completed, the electromagnetic plate 252 is energized to generate a strong magnetic force to adsorb and fix the several small table bodies 253, thereby synchronously fixing the positions of several groups of clamping devices 3 and preventing unnecessary displacement from causing deviation in the positioning accuracy of the third pipe fitting 10.

[0065] Optionally, two rectangular columns 12 are installed on each of the small table bodies 253 where the lower support members 31 are installed, and a clamping member 13 is assembled at the top of each two rectangular columns 12;

[0066] The clamping member 13 is pressed downwards and fits on the third pipe fitting 10. After several groups of clamping devices 3 clamp the third pipe fitting 10, the clamping member 13 is installed on the rectangular columns 12, so that the clamping member 13 presses downwards on the third pipe fitting 10 to form a downward restriction, thereby cooperating with several groups of clamping devices 3 to clamp and position the third pipe fitting 10 more firmly.

[0067] Optionally, the heat dissipation and buffering mechanism 11 includes a bracket member 14 placed on the bottom plate 1, a first gooseneck tube 15 mounted on the bracket member 14, a first hollow arc plate 16 mounted at the end of the first gooseneck tube 15, and two circulation pipes 17 with one end communicating with the first hollow arc plate 16 at intervals from the back. The first hollow arc plate 16 is made of copper to ensure good heat conduction performance. One of the two circulation pipes 17 is connected to the water outlet of an external water pump, and the water inlet of the external water pump is connected to a pipe immersed in a container filled with cooling water. The other circulation pipe 17 is connected back to the container filled with cooling water. Before positioning all pipe fittings and starting welding, the position of the first hollow arc plate 16 is flexibly swung with the support of the first gooseneck tube 15. After attaching it near the welding part of the pipe fitting, the external water pump is driven to start pumping cooling water from the container filled with cooling water, so that the cooling water continuously circulates and flows inside the first hollow arc plate 16. Thus, during the welding process, the first hollow arc plate 16 quickly absorbs the heat on the pipe fitting and transfers it to itself, and uses the continuously circulating cooling water inside to take away the heat, achieving the purpose of continuously reducing the temperature near the welding part, thereby alleviating the severe cold shrinkage of the pipe fitting in a passive heat absorption manner, curbing thermal expansion, preventing the occurrence of thermal deformation, avoiding the need for subsequent frame correction processes, controlling the single-piece processing cycle within a reasonable range, and at the same time preventing the occurrence of strong uneven stress distribution from affecting the service life of the frame and ensuring production quality.

[0068] Optionally, the heat dissipation and buffering mechanism 11 further includes a second gooseneck tube 18 arranged side by side with the first gooseneck tube 15 on the bracket member 14, and a second hollow arc plate 19 mounted at the end of the second gooseneck tube 18, and heating wires are arranged inside the second hollow arc plate 19;

[0069] The heating wires inside the second hollow arc plate 19 are connected to an external power supply through wires 20. The second hollow arc plate 19 is made of copper. Before starting welding, the position of the second hollow arc plate 19 is flexibly swung with the support of the first gooseneck tube 15. The second hollow arc plate 19 is attached to the pipe fitting to be welded, and the external power supply is turned on, so that the heating wires inside the second hollow arc plate 19 are energized and start to heat, and the heat is quickly transferred to the pipe fitting through the second hollow arc plate 19 to preheat the pipe fitting, continuously heating the temperature of the pipe fitting to a suitable range lower than the welding temperature, effectively reducing the temperature difference on the pipe fitting, and synchronously disconnecting the external power supply after welding is completed, thereby effectively avoiding the severe cold shrinkage of the pipe fitting after welding in an active regulation manner, further preventing the occurrence of thermal deformation, and improving the protection effect on the pipe fitting.

[0070] Optionally, the locking clip mechanism 7 includes a latch block 71 fixed on the base plate 1, two groove strips 72 arranged on the base plate 1 and located on both sides of the latch block 71, the grooving surfaces of the two groove strips 72 face each other, a clamping block 73 slidably installed between the two groove strips 72, a round convex block 74 installed on the back of the clamping block 73, an upright ear plate 75 installed on the base plate 1 and away from the latch block 71, and a second hand-tightening bolt 76 screwed onto the upright ear plate 75;

[0071] The end of the second hand-tightening bolt 76 is rotatably connected to the round convex block 74 through a bearing. After placing the first pipe fitting 8 on the two latch blocks 71 in a proper posture, turn the two second hand-tightening bolts 76 in sequence, rotate the second hand-tightening bolts 76 forward on the upright ear plate 75 to push the clamping block 73 forward along the two groove strips 72 until the clamping block 73 abuts against the first pipe fitting 8, and jointly complete the clamping and positioning of the first pipe fitting 8 with the latch block 71. The clamping distance between the clamping block 73 and the latch block 71 is adjustable, so as to be able to adapt to more models of the first pipe fitting 8 and improve the positioning adaptability.

[0072] Optionally, a resisting member 26 is arranged between the two groups of the locking clip mechanisms 7;

[0073] The resisting member 26 abuts against the front side of the first pipe fitting 8 to increase the abutting force on the front side of the first pipe fitting 8, and prevent the second pipe fitting 9 and the first pipe fitting 8 from tilting forward when the abutting member 6 is pushed forward by the manual pressure device 5 and the second pipe fitting 9 is abutted against from the back to the front by the abutting member 6, which may affect the positioning accuracy;

[0074] Two groups of upper supporting vertical plates 27 with different heights are arranged on the base plate 1;

[0075] The middle parts on both sides of the third pipe fitting 10 are respectively stuck on the two groups of upper supporting vertical plates 27, so as to specifically increase the upward supporting points at the distal end of the third pipe fitting 10, improve the positioning effect, and effectively prevent the distal end of the third pipe fitting 10 from swaying under the action of external forces due to the positioning effect of several groups of clamping devices 3 not being able to effectively cover, and ensure the stability of the positioning.

[0076] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A positioning welding tool for producing an electric vehicle frame, characterized in that: include: A base plate (1), a steering platform (2) arranged on the base plate (1), a plurality of groups of clamps (3) installed at equal intervals on the steering platform (2), a vertical plate (4) installed on the base plate (1) and located in front of the steering platform (2), a manual pressure device (5) installed on the vertical plate (4), a stopper (6) installed on the front end of the manual pressure device (5), two groups of locking and clamping mechanisms (7) arranged side by side on the base plate (1) and located in front of the vertical plate (4), a first pipe (8) clamped in the two groups of the locking and clamping mechanisms (7), a second pipe (9) welded to the first pipe (8), a third pipe (10) located on the plurality of groups of the clamps (3), and the third pipe (10) is in contact with the second pipe (9), and a slow-release mechanism (11) placed on the base plate (1); The abutment member (6) abuts against the second pipe member (9) from the rear, wherein: The plurality of groups of the clamps (3) are suitable for clamping the third pipe (10) at multiple points in a centripetal manner, and the plurality of groups of the clamps (3) are capable of actively filling a tiny gap between the clamps and the third pipe (10) so as to fit tightly with the third pipe (10); The orientation adjustment platform (2) is suitable for driving a plurality of groups of the clamping devices (3) to perform spatial position changes in various forms, so that the plurality of groups of the clamping devices (3) can perform clamping in a flexible and diverse manner.

2. The positioning welding tool for producing an electric vehicle frame according to claim 1, characterized in that: The clamp (3) comprises a lower support (31), the top of the lower support (31) is cylindrical, two arc-clamping blocks (32) are mirror-hinged on the top of the lower support (31), two round curved members (33) are mirror-connected to the lower support (31) and are respectively in contact with the side surfaces of the two arc-clamping blocks (32), the two round curved members (33) are both provided with arc grooves, two first sliders (34) and two second sliders (35) are respectively slidably mounted on the two round curved members (33), and the two second sliders (35) are respectively located below the two first sliders (34), two push rods (36) respectively connecting the two first sliders (34) and the two second sliders (35), two external protruding rods (37) respectively connected to the two second sliders (35), and a stop rod (38) linearly inserted on the two external protruding rods (37); The two first sliding blocks (34) are respectively connected to the two clamping arc surface blocks (32).

3. The positioning welding tool for producing an electric vehicle frame according to claim 2, characterized in that: The clamp (3) further comprises two inflatable bags (39) respectively mounted on the clamping surfaces of the two clamping arc surface blocks (32), and two air tubes (391) one end of which is respectively connected to the two inflatable bags (39); The other ends of the two air pipes (391) are connected to the air nozzle of an external high-pressure air pump.

4. The positioning welding tool for producing an electric vehicle frame as claimed in claim 3, characterized in that: The steering platform (2) comprises a plurality of first universal balls (21) mounted on the base plate (1) in a rectangular array, a plurality of outer sleeves (22) respectively mounted on the plurality of first universal balls (21), a plurality of inner pillars (23) respectively fitted and slidably inserted into the plurality of outer sleeves (22), a plurality of first hand-tightened bolts (24) respectively screwed on the tops of the plurality of outer sleeves (22), and the plurality of first hand-tightened bolts (24) respectively abut against the side surfaces of the plurality of inner pillars (23) in the plurality of outer sleeves (22), the tops of the plurality of inner pillars (23) are respectively connected with second universal balls, and a movable tabletop (25) mounted on the plurality of inner pillars (23) via the plurality of second universal balls; The lower supports (31) of a plurality of groups of the clamps (3) are mounted on the movable table (25).

5. The positioning welding tool for producing an electric vehicle frame as claimed in claim 4, characterized in that: The movable table (25) comprises an outer frame plate (251) mounted on the top surfaces of the plurality of inner pillars (23), an electromagnetic plate (252) mounted inside the outer frame plate (251), and a plurality of small table bodies (253) adsorbed on the electromagnetic plate (252) at equal intervals. The plurality of small platforms (253) are rotatably connected in sequence; The lower supports (31) of a plurality of groups of the clamps (3) are respectively mounted on one of the small platforms (253).

6. The positioning welding tool for producing an electric vehicle frame as claimed in claim 5, characterized in that: Two rectangular columns (12) are installed on each of the small platforms (253) except for the lower support (31), and buckling pieces (13) are installed on the tops of every two rectangular columns (12); The pressing piece (13) is pressed downwardly onto the third pipe piece (10).

7. The positioning welding tool for producing an electric vehicle frame according to claim 6, characterized in that: The slow-dissipation mechanism (11) comprises a bracket (14) placed on the bottom plate (1), a first gooseneck (15) mounted on the bracket (14), a first hollow arc plate (16) mounted on the end of the first gooseneck (15), and two circulation pipes (17) one end of which is connected to the first hollow arc plate (16) from the back through a gap.

8. The positioning welding tool for producing an electric vehicle frame as claimed in claim 7, characterized in that: The slow-dissipation mechanism (11) further comprises a second gooseneck tube (18) mounted on the bracket (14) in parallel with the first gooseneck tube (15), a second hollow arc plate (19) mounted on the end of the second gooseneck tube (18), and an electric heating wire is arranged inside the second hollow arc plate (19); The heating wire inside the second hollow arc plate (19) is connected to an external power source via a wire (20).

9. The positioning welding tool for producing an electric vehicle frame according to claim 8, characterized in that: The locking and clamping mechanism (7) comprises a stepping block (71) fixed on the bottom plate (1), two groove strips (72) arranged on the bottom plate (1) and located on both sides of the stepping block (71), the grooved surfaces of the two groove strips (72) facing each other, a clamping block (73) slidably mounted between the two groove strips (72), a round protrusion (74) mounted on the back of the clamping block (73), a vertical ear plate (75) mounted on the bottom plate (1) and away from the stepping block (71), and a second hand-tightening bolt (76) screwed on the vertical ear plate (75); The end of the second hand-tightening bolt (76) is rotatably connected to the round protrusion (74) via a bearing.

10. The positioning welding tool for producing an electric vehicle frame according to claim 9, characterized in that: A stopper (26) is provided between the two sets of locking and clamping mechanisms (7); The blocking member (26) abuts against the front side surface of the first tube member (8); Two groups of upper supporting vertical plates (27) of different heights are arranged on the bottom plate (1); The middle parts of both sides of the third pipe member (10) are respectively clamped on the two groups of upper supporting vertical plates (27).

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