A new energy automobile shell sheet metal welding equipment capable of positioning and clamping

Abstract

The present application relates to the technical field of welding, in particular to a new energy automobile shell sheet metal welding equipment capable of positioning and clamping, comprising a welding machine, a first clamping device and a second clamping device; the second clamping device comprises a first clamping arm, a second clamping arm and a clamping seat; the first clamping arm is slidably provided with a positioning sliding block and a positioning pin; the clamping seat is movably provided with a clamping pressing block on one side and a clamping swing assembly on the other side; the clamping seat is horizontally slidably provided with a transmission member; one end of the transmission member is in transmission connection with the clamping pressing block, and the other end is in transmission connection with the clamping swing assembly; the clamping swing assembly is slidably provided with a clamping sliding block; when the transmission member is pushed to slide, the transmission member drives the clamping pressing block to move downward, and drives the clamping sliding block to slide horizontally first and then drives the clamping swing assembly to swing the clamping sliding block around the hinge point to avoid interference; sufficient space is provided for welding, effectively avoiding interference between the clamping sliding block and the welding tool, thereby ensuring the welding quality.

Description

Technical Field

[0001] This invention relates to the field of welding technology, and more specifically to a welding equipment for the sheet metal shell of a new energy vehicle that can be positioned and clamped. Background Technology

[0002] In the manufacturing process of new energy vehicles, sheet metal welding is a core step in ensuring the strength and assembly accuracy of the vehicle body structure. The positioning and fixing effect of automotive sheet metal welding fixtures directly determines the final product quality. Existing automotive sheet metal welding fixtures generally adopt a rigid clamping method, using mechanical structure to rigidly press and fix the sheet metal workpiece. After positioning, the clamping components of this type of rigid fixture must maintain continuous contact with the surface of the sheet metal workpiece, and cannot detach from the workpiece after positioning. This results in the welding operation area being occupied by the fixture components, making it difficult to form sufficient operating space. This not only restricts the movement trajectory and operating angle of the welding tool, but also easily causes interference and collision between the welding tool and the fixture. Summary of the Invention

[0003] The purpose of this invention is to overcome the above-mentioned shortcomings and provide a new energy vehicle shell sheet metal welding equipment that can be positioned and clamped.

[0004] To achieve the above objectives, the specific solution of the present invention is as follows:

[0005] A new energy vehicle shell sheet metal welding equipment capable of positioning and clamping includes a welding machine, a plurality of first clamping devices disposed on the welding machine for clamping and fixing a first workpiece, and a second clamping device disposed on the welding machine for clamping and fixing a second workpiece.

[0006] The second clamping device includes a first clamping arm, a second clamping arm hinged to the first clamping arm, and a clamping seat disposed at one end of the second clamping arm.

[0007] The first clamping arm is slidably provided with a positioning slider and a positioning pin fixed on the positioning slider.

[0008] The clamping seat has a clamping block that slides vertically on one side and at least one clamping swing assembly that is hinged to the other side; the clamping seat also has a transmission component that slides horizontally; one end of the transmission component is connected to the clamping block and the other end is connected to each clamping swing assembly; each clamping swing assembly has a clamping slider that slides at its end.

[0009] When the transmission component slides, the transmission component drives the clamping block to move downwards, and drives the clamping slider to slide horizontally first, and then drives the clamping swing assembly to swing the clamping slider around its hinge point to avoid collision.

[0010] Furthermore, the present invention includes a first sliding groove vertically formed on one side of the clamping seat, and a locking spring piece hinged to the upper end of the first sliding groove; the clamping pressure block is slidably disposed in the first sliding groove; a first spring is connected between the upper end of the clamping pressure block and the groove wall of the first sliding groove; and a first slot is provided at the upper end of the clamping pressure block.

[0011] The locking spring is provided with a claw at its end for engaging with the first slot; the upper end of the locking spring is in frictional contact with the transmission component so that when the transmission component slides, the locking spring swings with the hinge point as the fulcrum under the frictional drive of the transmission component.

[0012] Furthermore, the first clamping arm is provided with a pneumatic assembly corresponding to the position of the transmission component; the pneumatic assembly includes a pneumatic body and a pneumatic piston; the pneumatic body is provided with a pneumatic cavity; the pneumatic cavity is provided with a through hole penetrating the pneumatic body at one end near the transmission component; the pneumatic cavity is open at one end away from the transmission component.

[0013] The plug portion of the pneumatic piston is movably disposed within the pneumatic cavity, and a second spring is provided between it and the cavity wall of the pneumatic cavity; the rod portion of the pneumatic piston extends movably out of the pneumatic body through a through hole and is connected to the upper end of the clamping pressure block through an elastic rope; the elastic rope movably passes through the transmission component.

[0014] Furthermore, the inner bottom wall of the pneumatic cavity is provided with a first locking groove; the bottom of the plug portion of the pneumatic piston is slidably provided with an elastic pin; the elastic pin is movably embedded in the first locking groove to lock the pneumatic piston in an unlockable manner.

[0015] Furthermore, the transmission component is provided with a first drive rod for each clamping swing assembly; the outer wall of the first drive rod is provided with a spiral groove; each clamping swing assembly further includes a swing arm; one end of the swing arm is rotatably provided with a drive pin; one end of the swing arm is hinged to the clamping seat through the drive pin; the drive pin is provided with a shaft hole; a protruding pin is provided in the shaft hole; the protruding pin is movably embedded in the spiral groove.

[0016] The swing arm is slidably provided with a second drive rod; the drive pin shaft is provided with a spiral groove in the middle; one end of the second drive rod is provided with a first pin; the first pin is movably embedded in the spiral groove; the other end of the second drive rod is provided with a second pin; the clamping slider is slidably passed through the other end of the swing arm; the clamping slider is provided with a first inclined groove; the second pin is movably embedded in the first inclined groove.

[0017] Furthermore, the second drive rod is provided with a third pin; a limiting slider is slidably provided inside the swing arm; the sliding direction of the limiting slider is perpendicular to the sliding direction of the second drive rod; the second drive rod movably passes through the limiting slider; both ends of the limiting slider are elastically connected to limiting blocks; the limiting slider is provided with a second inclined groove; the third pin is movably embedded in the second inclined groove.

[0018] The clamping seat has limiting notches on the upper and lower sides of the hinge joint between each swing arm and the clamping seat, which are used to cooperate with the limiting block to limit the swing arm.

[0019] Furthermore, a tension spring is connected between the transmission component and the clamping seat.

[0020] Furthermore, the other side of the clamping seat is hinged with two clamping swing assemblies.

[0021] Furthermore, the positioning slider is provided with a self-locking slider, a driving slider, and a third spring on the side facing the first clamping arm; the self-locking slider is slidably inserted through the positioning slider; the self-locking slider is provided with a second locking groove on the side facing the driving slider; the driving slider is elastically provided with a fourth pin on the side facing the self-locking slider; the fourth pin is movably embedded in the second locking groove to unlockably lock the self-locking slider; the self-locking slider is provided with a contact slope.

[0022] The first clamping arm has a second slot on the side facing the positioning slider for cooperating with the self-locking slider; the positioning slider also has a locking block that is elastically floating inside; both sides of the locking block have a chamfered structure.

[0023] Furthermore, the first clamping arm is provided with a first driving member and a second driving member located below the first driving member; the first driving member is hinged to the other end of the second clamping arm; the positioning slider is provided with a push cavity with one end open.

[0024] The output end of the second drive unit is provided with a first push rod and a second push rod; the length of the second push rod is greater than the length of the first push rod and is located below the first push rod; the second push rod corresponds to the opening position of the push chamber; the first push rod corresponds to the opening position of the pneumatic chamber; a one-way valve is provided at the end of the first push rod.

[0025] The beneficial effects of this invention are as follows: Through the coordinated linkage of the transmission component, the clamping swing assembly, and the clamping pressure block, after the clamping slider clamps and positions the workpiece along the axial direction of the positioning pin, the clamping pressure block first presses and positions the workpiece, and then the clamping swing assembly drives the clamping slider to automatically avoid the welding area. Thus, the positioning pin and the clamping pressure block jointly position the workpiece, thereby providing sufficient space for welding, effectively avoiding interference between the clamping slider and the welding tool, and thus ensuring the welding quality. Attached Figure Description

[0026] Figure 1 This is a structural schematic diagram of the new energy vehicle shell sheet metal welding equipment of the present invention;

[0027] Figure 2 This is a schematic diagram of the structure of the second clamping device of the present invention;

[0028] Figure 3 This is a structural schematic diagram of the second clamping device of the present invention from another perspective;

[0029] Figure 4 yes Figure 3 A magnified view of a section at point A in the middle;

[0030] Figure 5 This is a schematic diagram of the structure of the second clamping device of the present invention after the second workpiece is inserted;

[0031] Figure 6 This is a schematic diagram of the structure of the second clamping device of the present invention after the clamping swing component avoids the obstacle;

[0032] Figure 7 This is a cross-sectional schematic diagram of the cooperation between the transmission component, clamping seat, clamping swing assembly and clamping pressure block of the present invention;

[0033] Figure 8 This is a cross-sectional schematic diagram of the clamping swing assembly of the present invention;

[0034] Figure 9 This is a cross-sectional schematic diagram of the clamping swing assembly of the present invention from another perspective;

[0035] Figure 10 This is a partial structural schematic diagram of the clamping and swinging assembly of the present invention;

[0036] Figure 11 This is a cross-sectional schematic diagram of the drive pin shaft of the present invention;

[0037] Figure 12 This is a schematic diagram of the transmission component of the present invention;

[0038] Figure 13 This is a cross-sectional schematic diagram of the cooperation of the first clamping arm, the positioning slider, and the second driving component of the present invention.

[0039] Figure 14 yes Figure 13 A magnified view of a section at point B in the middle;

[0040] Figure 15 This is an exploded view of the self-locking slider, the driving slider, and the fourth pin of the present invention;

[0041] Figure 16 This is a cross-sectional schematic diagram of the pneumatic component of the present invention;

[0042] Figure 17 This is a cross-sectional schematic diagram of the pneumatic body of the present invention;

[0043] Explanation of reference numerals in the attached drawings: 10. Welding machine base; 20. First clamping device; 30. Second clamping device; 1. Fixed base; 11. Third driving component; 2. First clamping support arm; 21. Second slot; 22. First driving component; 23. Second driving component; 231. First push rod; 232. Second push rod; 233. One-way valve; 3. Second clamping support arm; 4. Clamping seat; 41. Locking spring; 411. Claw; 42. Limiting notch; 5. Positioning slider; 51. Positioning pin; 52. Self-locking slider; 53. Driving slider; 54. Third spring; 551. Fifth inclined section; 552. Sixth inclined section; 553. Seventh inclined section; 554. Eighth inclined section; 555. Second locking position; 56. Fourth pin; 57. Locking block; 6. Clamping pressure block 61. First slot; 62. First spring; 63. Elastic rope; 7. Clamping swing assembly; 71. Swing arm; 72. Clamping slider; 721. First inclined groove; 73. Drive pin; 731. Shaft hole; 732. Protruding pin; 733. Spiral groove; 74. Second drive rod; 741. First deflector pin; 742. Second deflector pin; 743. Third deflector pin; 75. Limiting slider; 751. Limiting block; 752. Second inclined groove; 8. Transmission component; 81. First drive rod; 811. Spiral groove; 82. Tension spring; 91. Pneumatic body; 911. First inclined section; 912. Second inclined section; 913. Third inclined section; 914. Fourth inclined section; 915. First locking position; 92. Pneumatic piston; 93. Second spring; 94. Elastic pin. Detailed Implementation

[0044] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments, but this is not to limit the scope of the invention to this.

[0045] like Figures 1 to 17As shown in this embodiment, a new energy vehicle shell sheet metal welding equipment capable of positioning and clamping includes a welding machine base 10, a plurality of first clamping devices 20 disposed on the welding machine base 10 for clamping and fixing a first workpiece, and a second clamping device 30 disposed on the welding machine base 10 for clamping and fixing a second workpiece; the first workpiece and the second workpiece are automotive sheet metal workpieces; the second clamping device 30 includes a fixed base 1, a first clamping support arm 2 hinged to the fixed base 1, a second clamping support arm 3 hinged to the first clamping support arm 2, and a clamping seat 4 disposed at one end of the second clamping support arm 3; the first clamping support arm 2 is slidably provided with a positioning slider 5 and fixedly disposed on the positioning slider 5. The positioning pin 51 is fixedly installed on the welding machine base 10; the clamping base 4 has a clamping pressure block 6 that slides vertically on one side and at least one clamping swing assembly 7 that is hinged on the other side; the clamping base 4 also has a transmission member 8 that slides horizontally; one end of the transmission member 8 is connected to the clamping pressure block 6 and the other end is connected to each clamping swing assembly 7; each clamping swing assembly 7 has a clamping slider 72 that slides at its end; when the transmission member 8 is pushed to slide, the transmission member 8 drives the clamping pressure block 6 to move downward and drives the clamping slider 72 to slide horizontally first and then drives the clamping swing assembly 7 to swing the clamping slider 72 around its hinge point to avoid collision.

[0046] Specifically, in actual use, the second clamping device 30 of the new energy vehicle shell sheet metal welding equipment of this embodiment corresponds to the welding position of the first workpiece and the second workpiece. Then, the first clamping support arm 2 drives the clamping swing assembly 7, the clamping seat 4, and the second clamping support arm 3 to swing, providing clearance space for placing the first workpiece. Then, the first workpiece is placed on the welding machine table 10, and the first workpiece is clamped and fixed by each of the first clamping devices 20. Then, the positioning slider 5 drives the positioning pin 51 to move forward, and the second workpiece is put into the positioning pin 51 through the positioning hole of the second workpiece, realizing the initial positioning of the second workpiece. Then, the first clamping support arm 2 drives the clamping swing assembly 7, the clamping seat 4, and the second clamping support arm 3 to swing toward the second workpiece. The second clamping support arm 3 drives the clamping swing assembly 7 to swing further toward the second workpiece, so that the clamping slider 72 clamps and positions the second workpiece along the axial direction of the positioning pin 51. Then, the transmission member 8 slides, so that the clamping pressure block 6 moves downward to press and position the top of the second workpiece. Figure 5 As shown, the transmission component 8 then drives the clamping slider 72 of the clamping swing assembly 7 to slide horizontally away from the second workpiece to release the clamping of the second workpiece. Then, the clamping swing assembly 7 drives the clamping slider 72 to swing around its hinge point away from the second workpiece. Figure 6 As shown, this is to provide clearance for welding operations;

[0047] After welding is completed, the positioning slider 5 drives the positioning pin 51 to slide in the opposite direction, causing the positioning pin 51 to disengage from the positioning hole of the second workpiece. The first clamping arm 2 drives the clamping swing assembly 7, the clamping seat 4, and the second clamping arm 3 to swing away from the welded second workpiece. At the same time, the transmission component 8 slides in the opposite direction, causing the clamping swing assembly 7 to reset. The clamping pressure block 6 slides upward, thereby releasing the pressure on the second workpiece. Each of the first clamping devices 20 releases its clamping and fixing of the first workpiece, so that the welded first and second workpieces can be moved out of the welding area to enter the next processing step.

[0048] In this embodiment, through the coordinated linkage of the transmission component 8, the clamping swing assembly 7, and the clamping pressure block 6, after the clamping slider 72 clamps and positions the workpiece along the axial direction of the positioning pin 51, the clamping pressure block 6 first presses and positions the workpiece, and then the clamping swing assembly 7 drives the clamping slider 72 to automatically avoid the welding area. Thus, the positioning pin 51 and the clamping pressure block 6 jointly position the workpiece, thereby providing sufficient space for welding and effectively avoiding interference between the clamping slider 72 and the welding tool, thus ensuring the welding quality.

[0049] like Figure 2 As shown, in the new energy vehicle shell sheet metal welding equipment of this embodiment, two clamping swing assemblies 7 are hinged to the other side of the clamping base 4. By setting two clamping swing assemblies 7, the clamping and positioning of the second workpiece in this embodiment is more reliable and the positioning accuracy is higher.

[0050] like Figure 4 and Figure 7 As shown, in the new energy vehicle shell sheet metal welding equipment of this embodiment, a first sliding groove is vertically opened on one side of the clamping seat 4, and a locking spring piece 41 is hinged at the upper end of the first sliding groove; the clamping pressure block 6 is slidably disposed in the first sliding groove; a first spring 62 is connected between the upper end of the clamping pressure block 6 and the groove wall of the first sliding groove; a first slot 61 is provided at the upper end of the clamping pressure block 6; a claw 411 for cooperating with the first slot 61 is provided at the end of the locking spring piece 41; the upper end of the locking spring piece 41 is in frictional contact with the transmission member 8, so that when the transmission member 8 slides, the locking spring piece 41 swings with the hinge point as the fulcrum under the frictional drive of the transmission member 8.

[0051] Specifically, initially, the chuck 411 engages with the first slot 61 to lock the clamping slider 72, and the first spring 62 is in a compressed state. When it is necessary to clamp the pressure block 6 to press and position the second workpiece, the transmission component 8 slides, and the transmission component 8 drives the locking plate to swing away from the clamping pressure block 6 through friction, so that the chuck 411 disengages from the first slot 61, thereby unlocking the clamping slider 72. At this time, the first spring 62 pushes the clamping pressure block 6 to move downward, thereby clamping and positioning the second workpiece so that the clamping slider 72 can avoid it.

[0052] like Figures 2 to 6 ,as well as Figure 16 and Figure 17 As shown, in the new energy vehicle shell sheet metal welding equipment of this embodiment, the first clamping arm 2 is provided with a pneumatic assembly corresponding to the position of the transmission component 8; the pneumatic assembly includes a pneumatic body 91 and a pneumatic piston 92; the pneumatic body 91 is provided with a pneumatic cavity; the end of the pneumatic cavity near the transmission component 8 is provided with a through hole penetrating the pneumatic body 91; the end of the pneumatic cavity away from the transmission component 8 is an open structure; the plug of the pneumatic piston 92 is movably disposed in the pneumatic cavity, and a second spring 93 is provided between it and the cavity wall of the pneumatic cavity; the rod of the pneumatic piston 92 extends movably out of the pneumatic body 91 through the through hole and is connected to the upper end of the clamping pressure block 6 through an elastic rope 63; the elastic rope 63 movably passes through the transmission component 8. In the new energy vehicle shell sheet metal welding equipment of this embodiment, the inner bottom wall of the pneumatic cavity is provided with a first locking groove; the bottom of the plug of the pneumatic piston 92 is slidably provided with an elastic pin 94; the elastic pin 94 is movably embedded in the first locking groove to unlockably lock the pneumatic piston 92.

[0053] Specifically, when it is necessary to push the transmission component 8 to slide, the rod of the pneumatic piston 92 is extended by air pressure, the elastic rope 63 contracts, the second spring 93 is compressed, and the elastic pin 94 is released from its locking engagement with the first locking groove. As the rod of the pneumatic piston 92 extends, it pushes the transmission component 8 to slide, thereby causing the pawl 411 to disengage from the first slot 61, thus unlocking the clamping block 6. The clamping block 6 slides downward to clamp and position the second workpiece. As the transmission component 8 continues to slide, it drives the clamping slider 72 to slide horizontally away from the second workpiece to release the clamping of the second workpiece. Then, it drives the clamping swing assembly 7 to swing the clamping slider 72 away from the second workpiece. Figure 6 As shown, this provides clearance for welding operations;

[0054] After the workpiece welding is completed, the pneumatic piston 92 is reset under the action of the second spring 93, releasing the thrust on the transmission component 8. As the pneumatic piston 92 is reset, the rod of the pneumatic piston 92 pulls the clamping block 6 upward through the elastic rope 63 to overcome the elastic force of the first spring 62, thereby releasing the pressure on the second workpiece. At the same time, the transmission component 8 is reset, and the second clamping support arm 3 drives the clamping swing assembly 7 to make way so that the welded workpiece can be removed from the welding machine table 10.

[0055] like Figures 2 to 12As shown, in the new energy vehicle shell sheet metal welding equipment of this embodiment, the transmission component 8 is provided with a first drive rod 81 corresponding to each clamping swing assembly 7; the outer wall of the first drive rod 81 is provided with a spiral groove 811; each clamping swing assembly 7 also includes a swing arm 71; one end of the swing arm 71 is rotatably provided with a drive pin 73; one end of the swing arm 71 is hinged to the clamping seat 4 through the drive pin 73; the drive pin 73 is provided with a shaft hole 731; a protruding pin 732 is provided in the shaft hole 731; the protruding pin 732 is movable. The second drive rod 74 is slidably mounted inside the spiral groove 811; a spiral groove 733 is provided in the middle of the drive pin 73; a first deflector pin 741 is provided at one end of the second drive rod 74; the first deflector pin 741 is movably mounted inside the spiral groove 733; a second deflector pin 742 is provided at the other end of the second drive rod 74; a clamping slider 72 is slidably mounted through the other end of the swing arm 71; the clamping slider 72 is provided with a first inclined groove 721; the second deflector pin 742 is movably mounted inside the first inclined groove 721. Figures 2 to 5 ,as well as Figure 7 As shown, in the new energy vehicle shell sheet metal welding equipment of this embodiment, a tension spring 82 is connected between the transmission component 8 and the clamping seat 4.

[0056] Specifically, when the clamping slider 72 needs to release its clamping position on the second workpiece to improve clearance space, the pneumatic piston 92 pushes the transmission component 8 to slide relative to the clamping seat 4 against the tension of the tension spring 82. The transmission component 8 drives the first drive rod 81 to move. At this time, with the cooperation of the protruding pin 732 and the spiral groove 811, the first drive rod 81 causes the drive pin 73 to rotate, and the first deflector pin 741 slides inward along the spiral groove 733, thereby causing the second drive rod 74 to move upward relative to the swing arm 71. At this time, with the cooperation of the second deflector pin 742 and the first inclined groove 721, the clamping slider 72 slides away from the second workpiece relative to the swing arm 71, thereby releasing the clamping of the second workpiece. At this time, the first deflector pin 741 moves to the innermost end of the spiral groove 733, so that the drive pin 73 and the second drive rod 74 form a rigid cooperation. The drive pin 73 drives the swing arm 71 to swing, and the swing amplitude is preferably set to 180 degrees, that is, the swing arm 71 drives the clamping slider 72 to swing 180 degrees. Figure 6 As shown, this provides more space for welding operations;

[0057] When the pneumatic piston 92 releases the thrust on the transmission component 8, the tension spring 82 pulls the transmission component 8 back to its original position. At this time, the first drive rod 81 engages with the convex pin 732 through the spiral groove 811, causing the drive pin 73 to rotate in the opposite direction. At this time, the first detent 741 moves from the inside to the outside along the spiral groove 733, causing the second drive rod 74 to slide relative to the swing arm 71. The second drive rod 74 engages with the first inclined groove 721 through the second detent 742, causing the clamping slider 72 to return to its original position. When the first detent 741 moves to the outermost end of the spiral groove 733, the drive pin 73 and the second drive rod 74 form a rigid engagement, thereby causing the swing arm 71 to drive the clamping slider 72 to swing 180 degrees in the opposite direction, so as to clamp and position the next workpiece.

[0058] Furthermore, such as Figure 12 As shown, the transmission component 8 includes a first rod, a second rod vertically connected to the end of the first rod away from the pneumatic piston 92, and a third rod vertically connected in the middle to the end of the second rod away from the first rod; the first rod, the second rod, and the third rod are arranged perpendicularly to each other; the first drive rod 81 is vertically connected to the end of the third rod. Preferably, in order to ensure that the clamping block 6 slides downward first to clamp and position the second workpiece, the end of the spiral groove 811 away from the clamping block 6 is connected to a straight groove; that is, when the transmission component 8 slides, the protruding pin 732 first moves along the straight groove and then enters the spiral groove 811, thereby causing the drive pin 73 to rotate.

[0059] like Figures 8 to 10 As shown, in the new energy vehicle shell sheet metal welding equipment of this embodiment, the second drive rod 74 is provided with a third deflector 743; a limiting slider 75 is slidably provided inside the swing arm 71; the sliding direction of the limiting slider 75 is perpendicular to the sliding direction of the second drive rod 74; the second drive rod 74 movably passes through the limiting slider 75; both ends of the limiting slider 75 are elastically connected to limiting blocks 751; the limiting slider 75 is provided with a second inclined groove 752; the third deflector 743 is movably embedded in the second inclined groove 752; the clamping seat 4 is provided with limiting notches 42 on the upper and lower sides of the hinge point between each swing arm 71 and the clamping seat 4, which are used to cooperate with the limiting blocks 751 to limit the swing arm 71.

[0060] Specifically, when the clamping slider 72 clamps and positions the second workpiece, the limiting block 751 on one side is embedded in the limiting notch 42 located below, thereby limiting the swing arm 71. When the second drive rod 74 slides, the second drive rod 74 cooperates with the second inclined groove 752 through the third deflector 743, causing the limiting slider 75 to slide away from the limiting notch 42, thereby driving the limiting block 751 on one side to move out of the limiting notch 42, so as to release the limitation on the swing arm 71.

[0061] When the swing arm 71 drives the clamping slider 72 to swing 180 degrees away from the workpiece, that is, the clamping slider 72 avoids the workpiece, the limiting block 751 on the other side is embedded in the limiting notch 42 located above, thereby limiting the swing arm 71. Similarly, the second drive rod 74 cooperates with the third pawl 743 through the second inclined groove 752, so that the limiting slider 75 slides toward the limiting notch 42, so that the limiting block 751 on the other side is embedded in the limiting notch 42 located above. Through the cooperation of the limiting block 751 and the limiting notch 42, the swing arm 71 can be limited, and the sliding of the clamping slider 72 can be made to precede the swing arm 71.

[0062] like Figure 13 and Figure 14 As shown, in the new energy vehicle shell sheet metal welding equipment of this embodiment, the positioning slider 5 is provided with a self-locking slider 52, a driving slider 53 and a third spring 54 on the side facing the first clamping arm 2; the self-locking slider 52 is slidably inserted into the positioning slider 5; the self-locking slider 52 is provided with a second locking groove on the side facing the driving slider 53; the driving slider 53 is elastically provided with a fourth pin 56 on the side facing the self-locking slider 52; the fourth pin 56 is movably embedded in the second locking groove to lock the self-locking slider 52 in an unlockable manner; the self-locking slider 52 is provided with a contact slope; the first clamping arm 2 is provided with a second slot 21 for cooperating with the self-locking slider 52 on the side facing the positioning slider 5; a locking block 57 is also elastically floatingly connected inside the positioning slider 5; both sides of the locking block 57 are provided with a chamfered structure. In the new energy vehicle shell sheet metal welding equipment of this embodiment, the first clamping arm 2 is provided with a first driving member 22 and a second driving member 23 located below the first driving member 22; the first driving member 22 is hinged to the other end of the second clamping arm 3; the positioning slider 5 is provided with a push cavity with one end open; the output end of the second driving member 23 is provided with a first push rod 231 and a second push rod 232; the length of the second push rod 232 is greater than the length of the first push rod 231, and it is located below the first push rod 231; the second push rod 232 corresponds to the opening position of the push cavity; the first push rod 231 corresponds to the opening position of the pneumatic cavity; the end of the first push rod 231 is provided with a one-way valve 233. Specifically, a third driving member 11 is installed on the fixed base 1, and the output end of the third driving member 11 is hinged to the first clamping arm 2 to drive the first clamping arm 2 to swing. The first driving member 22, the second driving member 23, and the third driving member 11 are preferably cylinders, but other power structures, such as electric actuators, can also be used. In this embodiment, by setting a first push rod 231 and a second push rod 232 at the output end of the second drive member 23, the drive of the transmission member 8 and the feeding movement of the positioning pin 51 can be realized simultaneously, resulting in better structural linkage.

[0063] Furthermore, such as Figure 16 and Figure 17As shown, the first locking groove includes a first inclined segment 911, a second inclined segment 912, a third inclined segment 913, and a fourth inclined segment 914 connected end to end; wherein, the connection between the second inclined segment 912 and the third inclined segment 913 forms a first locking position 915; the elastic pin 94 can move sequentially along the first inclined segment 911, the second inclined segment 912, the first locking position 915, the third inclined segment 913, and the fourth inclined segment 914 and then return to the first inclined segment 911. Initially, the elastic pin 94 is located at the end of the first inclined segment 911 near the fourth inclined segment 914.

[0064] like Figure 14 and Figure 15 As shown, the second locking groove includes a fifth inclined segment 551, a sixth inclined segment 552, a seventh inclined segment 553, and an eighth inclined segment 554 connected end to end in sequence; wherein, the connection between the sixth inclined segment 552 and the seventh inclined segment 553 forms a second locking position 555; the fourth pin 56 can move sequentially along the fifth inclined segment 551, the sixth inclined segment 552, the seventh inclined segment 553, and the eighth inclined segment 554 and then return to the fifth inclined segment 551. Initially, the fourth pin 56 is located at the end of the fifth inclined segment 551 near the eighth inclined segment 554.

[0065] When the second workpiece needs to be placed, the first push rod 231 and the second push rod 232 of the second drive member 23 extend simultaneously. The end of the second push rod 232 inserts into the push cavity. When the end of the second push rod 232 contacts the chamfered structure of the locking block 57, since the positioning slider 5 has a degree of freedom at this time, the second push rod 232 pushes the positioning slider 5 through the locking block 57 to drive the positioning pin 51 to move and feed until the positioning slider 5 slides into place. At this time, the positioning slider 5 is restricted. As the second push rod 232 extends further, the second push rod 232 squeezes the locking block 57 to retract until the second push rod 232 passes the locking block 57 and contacts the contact slope of the self-locking slider 52, thereby squeezing the self-locking slider 52 to slide towards the second slot 21. At this time, the fourth pin 56 moves along the fifth inclined section 551. Until it enters the sixth inclined section 552, the corresponding drive slider 53 compresses the third spring 54; then the second push rod 232 retracts, at which time the third spring 54 pushes the drive slider 53 to reset, and the drive slider 53 drives the fourth pin 56 to move along the sixth inclined section 552 until the fourth pin 56 enters the second locking position 555. At this time, the self-locking slider 52 cooperates with the second slot 21 to lock the positioning slider 5, so that the positioning slider 5 is kept in the current position, that is, the positioning pin 51 is kept in the current position. Then the second workpiece is put on the positioning pin 51, and then the first drive member 22 drives the second clamping arm 3 to swing. The second clamping arm 3 drives the clamping slider 72 of the clamping swing assembly 7 to swing toward the second workpiece, thereby clamping and positioning the second workpiece along the axial direction of the positioning pin 51.

[0066] It should be noted that when the second driving member 23 pushes the first push rod 231 to extend for the first time, the end of the first push rod 231 is sealed and inserted into the pneumatic cavity. At this time, the end of the first push rod 231, the pneumatic piston 92, and the pneumatic cavity together form a closed cavity, which increases the pressure in the closed cavity, thereby pushing the pneumatic piston 92 to extend. The second spring 93 is compressed. At this time, the elastic pin 94 moves along the first inclined section 911 until it enters the second inclined section 912 from the first inclined section 911. Correspondingly, the fourth detent 56 enters the sixth inclined section 552 from the fifth inclined section 551. At this time, the rod end of the pneumatic piston 92 does not apply a thrust to the transmission member 8. As the first push rod 231 resets, the one-way valve 233 opens, and the outside gas enters the closed cavity. After the closed cavity is released, the pneumatic piston 92 retracts under the elastic force of the second spring 93. The elastic pin 94 moves along the second inclined section 912 until it enters the first locking position 915, thereby locking the pneumatic piston 92.

[0067] After the clamping slider 72 is positioned, the second driving member 23 pushes the first push rod 231 and the second push rod 232 to extend again. At this time, due to the restriction of the positioning slider 5, the second push rod 232 squeezes the locking block 57 to retract until it squeezes the self-locking slider 52 again, causing the fourth detent 56 to move from the second locking position 555 along the seventh inclined section 553 until it enters the eighth inclined section 554, thereby realizing the unlocking action of the self-locking slider 52; when the first push rod 231 is inserted into the pneumatic cavity again, the end of the first push rod 231 and the pneumatic piston 92 The pneumatic chambers are enclosed again to form a closed cavity, allowing the pneumatic piston 92 to extend under air pressure, overcoming the elastic force of the second spring 93. The elastic pin 94 moves from the first locking position 915 along the third inclined section 913, thus unlocking the pneumatic piston 92 until the elastic pin 94 enters the fourth inclined section 914. During this process, the rod of the pneumatic piston 92 pushes the transmission component 8 to slide, thereby causing the clamping block 6 to clamp and position the second workpiece, and causing the swing arm 71 to swing the clamping slider 72 180 degrees to avoid obstruction. Figure 6 As shown; then the second drive member 23 holds the first push rod 231 and the second push rod 232 in the current position, and then the welding operation of the first workpiece and the second workpiece is performed.

[0068] After welding, the second push rod 232 releases the pressure on the self-locking slider 52. Under the elastic force of the third spring 54, the fourth pin 56 returns to the fifth inclined section 551 along the eighth inclined section 554. When the second push rod 232 contacts the locking block 57, the second push rod 232 applies a reverse thrust to the positioning slider 5. At this time, the positioning slider 5 has a degree of freedom in the direction of the reverse thrust. Thus, the second push rod 232 pushes the positioning slider 5 to drive the positioning pin 51 to move in the opposite direction, realizing the automatic separation of the positioning pin 51 from the second workpiece. Similarly, as the first push rod 231 returns to its original position, the first push rod 231 pulls the clamping block 6 through the elastic rope 63 to overcome the elastic force of the first spring 62 and slide upward to release the pressure on the second workpiece. The pneumatic piston 92 resets under the elastic force of the second spring 93. The elastic pin 94 moves along the fourth inclined section 914 and returns to the first inclined section 911, thus realizing the reset of the pneumatic piston 92.

[0069] The above description is only a preferred embodiment of the present invention. Therefore, any equivalent changes or modifications made to the structure, features and principles described in the claims of this patent application are included within the protection scope of this patent application.

Claims

1. A new energy vehicle shell sheet metal welding equipment capable of positioning and clamping, characterized in that, It includes a welding machine, a plurality of first clamping devices disposed on the welding machine and used for clamping and fixing a first workpiece, and a second clamping device disposed on the welding machine and used for clamping and fixing a second workpiece. The second clamping device includes a first clamping arm, a second clamping arm hinged to the first clamping arm, and a clamping seat disposed at one end of the second clamping arm. The first clamping arm is slidably provided with a positioning slider and a positioning pin fixed on the positioning slider. The clamping seat has a clamping block that slides vertically on one side and at least one clamping swing assembly that is hinged to the other side; the clamping seat also has a transmission component that slides horizontally; one end of the transmission component is connected to the clamping block and the other end is connected to each clamping swing assembly; each clamping swing assembly has a clamping slider that slides at its end. When the transmission component slides, the transmission component drives the clamping block to move downwards, and drives the clamping slider to slide horizontally first, and then drives the clamping swing assembly to swing the clamping slider around its hinge point to avoid collision.

2. The new energy vehicle shell sheet metal welding equipment according to claim 1, characterized in that, The clamping seat has a first sliding groove vertically opened on one side, and a locking spring is hinged at the upper end of the first sliding groove; the clamping pressure block is slidably disposed in the first sliding groove; a first spring is connected between the upper end of the clamping pressure block and the groove wall of the first sliding groove; the upper end of the clamping pressure block is provided with a first slot. The locking spring is provided with a claw at its end for engaging with the first slot; the upper end of the locking spring is in frictional contact with the transmission component so that when the transmission component slides, the locking spring swings with the hinge point as the fulcrum under the frictional drive of the transmission component.

3. The new energy vehicle shell sheet metal welding equipment according to claim 2, characterized in that, The first clamping arm is provided with a pneumatic assembly corresponding to the position of the transmission component; the pneumatic assembly includes a pneumatic body and a pneumatic piston; the pneumatic body is provided with a pneumatic cavity; the pneumatic cavity is provided with a through hole penetrating the pneumatic body at one end near the transmission component; the pneumatic cavity is open at one end away from the transmission component. The plug portion of the pneumatic piston is movably disposed within the pneumatic cavity, and a second spring is provided between it and the cavity wall of the pneumatic cavity; the rod portion of the pneumatic piston extends movably out of the pneumatic body through a through hole and is connected to the upper end of the clamping pressure block through an elastic rope; the elastic rope movably passes through the transmission component.

4. The new energy vehicle shell sheet metal welding equipment according to claim 3, characterized in that, The inner bottom wall of the pneumatic cavity is provided with a first locking groove; the bottom of the plug portion of the pneumatic piston is provided with an elastic pin; the elastic pin is movably embedded in the first locking groove to lock the pneumatic piston in an unlockable manner.

5. The new energy vehicle shell sheet metal welding equipment according to claim 1, characterized in that, The transmission component is provided with a first drive rod for each clamping swing assembly; the outer wall of the first drive rod is provided with a spiral groove; each clamping swing assembly also includes a swing arm; one end of the swing arm is rotatably provided with a drive pin; one end of the swing arm is hinged to the clamping seat through the drive pin; the drive pin is provided with a shaft hole; a protruding pin is provided in the shaft hole; the protruding pin is movably embedded in the spiral groove. The swing arm is slidably provided with a second drive rod; the drive pin shaft is provided with a spiral groove in the middle; one end of the second drive rod is provided with a first pin; the first pin is movably embedded in the spiral groove; the other end of the second drive rod is provided with a second pin; the clamping slider is slidably passed through the other end of the swing arm; the clamping slider is provided with a first inclined groove; the second pin is movably embedded in the first inclined groove.

6. The new energy vehicle shell sheet metal welding equipment according to claim 5, characterized in that, The second drive rod is provided with a third pin; a limiting slider is slidably provided inside the swing arm; the sliding direction of the limiting slider is perpendicular to the sliding direction of the second drive rod; the second drive rod moves through the limiting slider; both ends of the limiting slider are elastically connected to limiting blocks; the limiting slider is provided with a second inclined groove; the third pin is movably embedded in the second inclined groove. The clamping seat has limiting notches on the upper and lower sides of the hinge joint between each swing arm and the clamping seat, which are used to cooperate with the limiting block to limit the swing arm.

7. The new energy vehicle shell sheet metal welding equipment according to claim 1, characterized in that, A tension spring connects the transmission component to the clamping seat.

8. The new energy vehicle shell sheet metal welding equipment according to claim 1, characterized in that, Two clamping swing assemblies are hinged to the other side of the clamping seat.

9. The new energy vehicle shell sheet metal welding equipment according to claim 3, characterized in that, The positioning slider has a self-locking slider, a driving slider, and a third spring on the side facing the first clamping arm; the self-locking slider slides through the positioning slider; the self-locking slider has a second locking groove on the side facing the driving slider; the driving slider has a fourth pin elastically provided on the side facing the self-locking slider; the fourth pin is movably embedded in the second locking groove to unlockably lock the self-locking slider; the self-locking slider has a contact slope. The first clamping arm has a second slot on the side facing the positioning slider for cooperating with the self-locking slider; the positioning slider also has a locking block that is elastically floating inside; both sides of the locking block have a chamfered structure.

10. The new energy vehicle shell sheet metal welding equipment according to claim 9, characterized in that, The first clamping arm is provided with a first driving member and a second driving member located below the first driving member; the first driving member is hinged to the other end of the second clamping arm; the positioning slider is provided with a push cavity with one end open. The output end of the second drive unit is provided with a first push rod and a second push rod; the length of the second push rod is greater than the length of the first push rod and is located below the first push rod; the second push rod corresponds to the opening position of the push chamber; the first push rod corresponds to the opening position of the pneumatic chamber; a one-way valve is provided at the end of the first push rod.

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