A battery lower shell welding production line with an automatic cyclic palletizing device

Abstract

The present invention relates to the field of power battery welding, and specifically relates to a battery lower shell welding production line with an automatic cyclic palletizing device, which includes a gantry material transfer assembly, a jaw assembly, a trolley, and a stacking assembly. The jaw assembly includes four L-shaped clamping frames and two jaw cylinders. At both ends of the trolley, there are vertically arranged U-shaped push hands at the top. The stacking assembly includes a ramp loading platform, two guiding rods, a rectangular slider, an adjustable slider, and an intercepting lever. A tension spring is connected to each adjustable slider. Through the redesigned jaw assembly, the present invention can smoothly and stably double-clamp the battery lower shell, ensuring efficient and stable transfer of the battery lower shell. By accommodating multiple trolleys on the ramp loading platform at the same time and cooperating with the method of automatically opening the gate for release based on a fixed weight, the unmanned placement and automatic positioning effect of the trolley are achieved, greatly saving labor costs and improving efficiency.

Description

Technical Field

[0001] The present invention relates to the field of power battery welding, and in particular to a battery lower shell welding production line with an automatic circulation stacking device. Background Art

[0002] A pure electric vehicle (BEV) is a vehicle that uses a single battery as a power source for energy storage. It uses the battery as a power source for energy storage, provides electrical energy to the motor through the battery, drives the motor to operate, and thus propels the vehicle to travel. The rechargeable batteries of pure electric vehicles mainly include lead-acid batteries, nickel-cadmium batteries, nickel-metal hydride batteries, and lithium-ion batteries, which can provide power for pure electric vehicles. At the same time, pure electric vehicles also use batteries to store electrical energy to drive the motor to operate and allow the vehicle to travel normally.

[0003] In recent years, with the development of new energy vehicles, the market demand for power batteries has risen sharply. For power batteries, the important functions of power battery shell spacing protection and cooling are self-evident. At present, welding is generally used in the assembly of power batteries to ensure their sealing. As a result, many various power battery welding production lines have emerged. In the welding production line of power batteries, it is necessary to transfer the formed battery lower shells to the welding station in batches. In this process, carts are often used in conjunction with stackers to stack the shells in batches, and then the carts are manually taken away, and then new carts are put in, and then the carts are fixed with pins so that the carts will not move during the process of loading the battery shells. This process is cumbersome, requires frequent human involvement and is inefficient. In addition, the clamping system of the stacker cannot adapt to the battery shell well. Since the battery shell usually forms a welding flange extending outward at its edge during the production process, the traditional clamping system cannot smoothly clamp it. Summary of the invention

[0004] Based on this, it is necessary to provide a battery lower shell welding production line with an automatic circulation stacking device to address the existing technical problems.

[0005] In order to solve the problems of the prior art, the technical solution adopted by the present invention is:

[0006] A battery lower shell welding production line with an automatic circulation stacking device, comprising:

[0007] A gantry material transfer assembly having an output end capable of two-axis movement;

[0008] The clamping claw assembly is arranged on the output end of the gantry material moving assembly, and the clamping claw assembly includes four L-shaped clamping frames that can clamp and position the battery lower shell horizontally from the four ends thereof, and two clamping claw cylinders that can clamp the two side walls of the battery lower shell downwards respectively;

[0009] A trolley is used to load the lower shells of vertically stacked batteries. Both ends of the trolley are equipped with vertically arranged U-shaped handles on the top;

[0010] The stacking assembly comprises a ramp platform located below the end of the output end moving path of the gantry material moving assembly, two guide rods located above the ramp platform and used for the cart to pass through, two rectangular sliders respectively fixed on the two guide rods, two adjustable sliders respectively fixed on the two guide rods, and two interception levers respectively hinged on the two rectangular sliders, each of the adjustable sliders being connected to a tension spring for elastically pulling the free end of the corresponding interception lever;

[0011] The free ends of the two intercepting levers are arranged to face each other and are used to block the U-shaped push handle on the cart passing between the two guide rods.

[0012] Furthermore, support rod frames extending upward are fixedly arranged on both sides of the slope platform, and each guide rod is fixedly arranged on the top of the corresponding support rod frame, and the length direction of the guide rod is consistent with the slope direction of the slope platform;

[0013] The two rectangular sliders are fixedly connected to a laterally extending strip support plate on the opposite sides thereof, and a connecting shaft perpendicular to the strip support plate is fixedly provided at the extended end of the strip support plate, one end of the intercepting lever is hinged to the connecting shaft, and the other end extends toward the direction of the rectangular slider to between the two guide rods;

[0014] Each of the adjustable sliders is movably connected to the guide rod. A first threaded hole is provided on one side of the adjustable slider. A hand-tightened screw that presses inward against the guide rod is screwed into the first threaded hole. One end of the tension spring is connected to the hand-tightened screw, and the other end is connected to a punching avoidance strip formed in the middle of the intercepting rod. The rectangular slider is located between the adjustable slider and the free end of the intercepting rod. The tension spring causes the free end of the intercepting rod to always have a tendency to press against the rectangular slider.

[0015] Furthermore, a second threaded hole is formed on the rectangular sliding block, and a locking bolt for pressing the guide rod inward is screwed into the second threaded hole.

[0016] Furthermore, the clamping jaw assembly also includes a support plate and two double-axis opposing cylinders symmetrically arranged at the bottom of both ends of the support plate. The top of the support plate is upwardly connected to the moving output end of the gantry material moving assembly through a hinge seat. The two double-axis opposing cylinders are parallel to each other. The output shafts at both ends of each double-axis opposing cylinder are fixedly connected with extension brackets that are perpendicular to the double-axis opposing cylinders and extend outward. The middle part of each L-shaped clamping frame is connected to the end of the upper extension bracket through a connecting shaft.

[0017] Furthermore, the upper end of the rotating shaft is axially connected to the end of the extension bracket, and a torsion spring is sleeved on the rotating shaft. The upper and lower ends of the torsion spring are respectively fixedly connected to the extension bracket and the L-shaped clamping frame. The upper end of the rotating shaft is fixedly connected to a rotating rod that fits the upper surface of the extension bracket, and a limit block is fixedly provided on the top of the end of the extension bracket for the rotating rod to contact. The torsion spring is used to make the L-shaped clamping rod always have a tendency to rotate, and the rotating rod always has a tendency to turn towards the limit block. Both ends of each L-shaped clamping frame are provided with clamping rollers for rolling contact with the outer wall of the lower shell of the battery.

[0018] Furthermore, connecting plates located outside the dual-axis bidirectional cylinders are fixedly provided at the bottom of both ends of the support plate, and a horizontal limiting slide rail is fixedly connected to the outside of each connecting plate, and the top of each extension bracket is slidably connected to the limiting slide rail.

[0019] Furthermore, the claw end of each of the clamping claw cylinders is arranged downward, and the two finger ends of the clamping claw cylinder are fixedly connected with L-shaped clamping fingers, and the sides of the two L-shaped clamping fingers that contact the shell wall of the lower shell of the battery are provided with anti-slip patches.

[0020] Furthermore, the gantry material moving assembly includes a gantry arranged in a vertical state, a mobile slide movably arranged on the top of the gantry, a horizontal rack fixedly arranged on the top of the gantry, a first motor fixedly arranged on the mobile slide, and a lifting mechanism fixedly arranged on the outside of the mobile slide. A horizontal slide rail for sliding connection of the mobile slide is fixedly arranged on the top of the gantry. The output shaft of the first motor passes through the mobile slide and is fixedly connected to a first gear, and the first gear is meshed with the horizontal rack.

[0021] Furthermore, the lifting mechanism includes a longitudinal beam slidably connected to the movable slide, a vertical rack fixedly arranged on one side of the longitudinal beam, and a second motor fixedly arranged on the movable slide, the output of the second motor passes through the movable slide and is fixedly connected to a second gear, the second gear is meshed with the vertical rack, and the outer side of the movable slide is fixedly connected to a vertical slide rail for sliding connection of the longitudinal beam.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] Firstly, the present invention can smoothly and stably double-clamp the battery lower shell through the redesigned clamping jaw assembly, thereby ensuring that the battery lower shell can be efficiently and stably transferred;

[0024] Secondly, the present invention can accommodate multiple carts at the same time by means of a slope platform, and realizes unmanned delivery and automatic positioning of carts by automatically opening the gate and releasing the carts according to the weight, which greatly saves labor costs and improves efficiency;

[0025] Thirdly, the present invention automatically stops and releases the cart through an intercepting baffle with adjustable pulling force, thus avoiding the cumbersome operation process of the traditional manual cart positioning method. The workers only need to put the empty cart onto the slope platform. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a three-dimensional structural schematic diagram of the present invention;

[0027] Figure 2 yes Figure 1 A schematic diagram of the structure enlargement at point A;

[0028] Figure 3 It is a schematic diagram of a partial three-dimensional structure of the present invention;

[0029] Figure 4 The three-dimensional structure diagram of the gantry material moving assembly and the clamping claw assembly of the present invention is shown in FIG. Figure 1 ;

[0030] Figure 5 yes Figure 4 A schematic diagram of the structure at B in FIG.

[0031] Figure 6 The three-dimensional structure diagram of the gantry material moving assembly and the clamping claw assembly of the present invention is shown in FIG. Figure 2 ;

[0032] Figure 7 The three-dimensional structure diagram of the clamping jaw assembly of the present invention is shown in FIG. Figure 1 ;

[0033] Figure 8 The three-dimensional structure diagram of the clamping jaw assembly of the present invention is shown in FIG. Figure 2 ;

[0034] The numbers in the figure are: 1-battery lower shell; 2-gantry material moving assembly; 3-gantry; 4-horizontal slide rail; 5-movable slide; 6-first motor; 7-first gear; 8-horizontal rack; 9-longitudinal beam; 10-vertical slide rail; 11-second motor; 12-second gear; 13-vertical rack; 14-grip assembly; 15-support plate; 16-hinged seat; 17-connecting plate; 18-limiting slide rail; 19-double-axis bidirectional cylinder; 20-extension bracket; 21-slider; 22-limiting block ; 23-L-type clamping frame; 24-rotating shaft; 25-rotating rod; 26-clamping roller; 27-torsion spring; 28-gripping claw cylinder; 30-L-type clamping finger; 31-anti-slip adhesive tape; 32-trolley; 33-U-shaped push handle; 35-inclined platform; 36-support rod frame; 37-guide rod; 38-rectangular slider; 39-strip support plate; 40-connecting shaft; 42-locking bolt; 43-adjustable slider; 44-hand screw; 46-tension spring; 47-intercepting lever; 48-punching avoidance strip. DETAILED DESCRIPTION

[0035] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0036] Reference Figures 1 to 8 As shown, a battery lower shell welding production line with an automatic circulation stacking device includes:

[0037] Gantry material moving assembly 2, which has an output end capable of two-axis movement;

[0038] The clamping jaw assembly 14 is arranged on the output end of the gantry material moving assembly 2, and the clamping jaw assembly 14 includes four L-shaped clamping frames 23 that can clamp and position the battery lower shell 1 horizontally from four ends thereof, and two clamping jaw cylinders 28 that can clamp the two side walls of the battery lower shell 1 downwards respectively;

[0039] A trolley 32 is used to load the vertically stacked battery lower shells 1, and the tops of both ends of the trolley 32 are provided with vertically arranged U-shaped handles 33;

[0040] The stacking assembly includes a ramp platform 35 located below the end of the moving path of the output end of the gantry material moving assembly 2, two guide rods 37 located above the ramp platform 35 and used for the cart 32 to pass through, two rectangular sliders 38 respectively fixed on the two guide rods 37, two adjustable sliders 43 respectively fixed on the two guide rods 37, and two interception levers 47 respectively hinged on the two rectangular sliders 38, each of the adjustable sliders 43 is connected to a tension spring 46 for elastically pulling the free end of the corresponding interception lever 47;

[0041] The free ends of the two intercepting levers 47 are arranged to face each other and are used to block the U-shaped push handle 33 on the trolley 32 passing between the two guide rods 37 .

[0042] The battery lower shell 1 is transported to the bottom of the gantry material moving assembly 2 via the conveyor line. The gantry material moving assembly 2 drives the clamping claw assembly 14 to descend to clamp the battery lower shell 1. The clamping claw assembly 14 clamps and positions the battery lower shell 1 at four right angles through four L-shaped clamping frames 23. At the same time, the clamping claw cylinders 28 on both sides clamp the middle of the two side walls of the battery lower shell 1. At this point, the clamping claw assembly 14 completes the clamping of the battery lower shell 1. Then the gantry material moving assembly 2 drives the clamping claw assembly 14 and The battery lower shell 1 rises and translates to the top of the cart 32 on the slope platform 35, and then the gantry material moving assembly 2 drives the clamping claw assembly 14 and the battery lower shell 1 to descend into the cart 32, and the clamping claw mechanism releases the battery lower shell 1 to place it in the cart 32, and then the gantry material moving assembly 2 drives the clamping claw assembly 14 to rise and translate to the initial position, so as to continue to clamp and transfer the next battery lower shell 1 into the cart 32, until a certain number of battery lower shells 1 are stacked in the cart 32;

[0043] The trolley 32 is pushed from between the two guide rods 37 to the slope platform 35 in advance, and the two sides of the U-shaped push handle 33 of the trolley 32 are fitted on the two guide rods 37 and slide down along the slope platform 35 until the U-shaped push handle 33 at the front end contacts the interception lever 47 and stops moving forward. The stretching amount of the tension spring 46 is adjusted by moving and fixing the adjustable slider 43, thereby controlling the elastic tension of the tension spring 46 on the interception lever 47. In this way, the elastic tension of the tension spring 46 is pre-adjusted to achieve the purpose of overcoming the tension of the tension spring 46 from the slope platform 35 under the action of gravity and then pushing open the interception lever 47 when a certain number of battery lower shells 1 are installed in the trolley 32, and the empty trolley 32 moving forward at the rear is intercepted by the reset interception lever 47 and waits for loading.

[0044] Both sides of the slope platform 35 are fixedly provided with support rod frames 36 extending upward, and each guide rod 37 is fixedly provided on the top of the corresponding support rod frame 36. The length direction of the guide rod 37 is consistent with the slope direction of the slope platform 35. The width of the channel between the two guide rods 37 can only allow one cart 32 to pass smoothly. The slope of the slope platform 35 ranges from 4 to 7 degrees. If it is too large, it will cause a waste of vertical space. If the slope is too small, the cart 32 will not move forward well. The slope platform 35 can place two carts 32 at the same time. When pre-adjusting the tension spring 46, it is necessary to ensure that the two carts 32 are on the slope platform 35;

[0045] The two rectangular sliders 38 are fixedly connected to a laterally extending strip support plate 39 on the opposite sides thereof, and a connecting shaft 40 perpendicular to the strip support plate 39 is fixedly provided at the extended end of the strip support plate 39, and one end of the interception lever 47 is hinged to the connecting shaft 40, and the other end extends toward the direction of the rectangular slider 38 to between the two guide rods 37;

[0046] Each of the adjustable sliders 43 is movably sleeved on the guide rod 37. A first threaded hole is provided on one side of the adjustable slider 43. A hand screw 44 is screwed into the first threaded hole and pressed against the guide rod 37. One end of the tension spring 46 is sleeved on the hand screw 44, and the other end is sleeved on the punching avoidance strip formed in the middle of the interception lever 47. The rectangular slider 38 is located between the adjustable slider 43 and the free end of the interception lever 47. The tension spring 46 makes the free end of the interception lever 47 always have a tendency to press against the rectangular slider 38. When the tension spring 46 is pre-adjusted, the hand screw 44 is loosened and the adjustable slider 43 is dragged to slide on the guide rod 37, thereby stretching the tension spring 46. As the tension spring 46 is stretched, the elastic tension on the interception lever 47 is gradually increased. The position of the adjustable slider 43 is fixed by tightening the hand screw 44 again to press against the guide rod 37.

[0047] By arranging the strip support plate 39 on the side of the rectangular slider 38 away from the guide rod 37, the connection point between the tension spring 46 and the interception lever 47 is located on the side of the rectangular slider 38 away from the guide rod 37, thereby ensuring that the tension spring 46 is located on the outside of the two guide rods 37, thereby preventing the trolley 32 from touching the tension spring 46 during its forward movement. When the trolley 32 reopens the interception lever 47 and passes smoothly, the interception lever 47 is reset under the action of the tension spring 46 until it is elastically pressed against the rectangular slider 38 again. At this time, under the tension of the tension spring 46, the empty trolley 32 at the rear can be smoothly stopped.

[0048] The rectangular slider 38 is provided with a second threaded hole, in which a locking bolt 42 is screwed for pressing the guide rod 37 inwardly. The fixed connection between the rectangular slider 38 and the guide rod 37 is achieved by the locking bolt 42 passing through the second threaded hole and pressing the guide rod 37. When fixing the position of the rectangular slider 38, it should be dragged to a position close to the lower end of the ramp platform 35 and fixed.

[0049] The clamping jaw assembly 14 also includes a support plate 15 and two double-axis opposing cylinders symmetrically arranged at the bottom of both ends of the support plate 15. The top of the support plate 15 is upwardly connected to the moving output end of the gantry material moving assembly 2 through an articulated seat 16. Since the lower battery shell 1 is in a horizontal state during the process of the clamping jaw assembly 14 picking up and moving the lower battery shell 1, and the lower battery shell 1 will fall into the cart 32 in an inclined state after being placed in the cart 32, an articulated seat 16 with rotational freedom is arranged on the top of the clamping jaw assembly 14 to ensure that the clamping jaw assembly 14 can be completely lowered into the cart 32 with the lower battery shell 1 in an inclined state. The two double-axis opposing cylinders are parallel to each other, and the output shafts at both ends of each double-axis opposing cylinder are fixedly connected with an extension bracket 20 that is perpendicular to the double-axis opposing cylinder and extends outward, and the middle part of each L-shaped clamping frame 23 is connected to the end of the upper extension bracket 20 through a connecting shaft 40. The output ends of the two double-axis bidirectional cylinders 19 respectively drive the two corresponding extension brackets 20 to be parallel to each other and approach each other, so that the two pairs of extension brackets 20 are close to each other along the width direction of the battery lower shell 1, until the four L-shaped clamping frames 23 jointly clamp the four right-angled sides of the battery lower shell 1, thereby completing the positioning and clamping of the battery lower shell 1, and then facilitating the two clamping claw cylinders 28 to accurately clamp the two side walls of the battery lower shell 1.

[0050] The upper end of the rotating shaft 24 is axially connected to the end of the extension bracket 20, and a torsion spring 27 is sleeved on the rotating shaft 24. The upper and lower ends of the torsion spring 27 are respectively fixedly connected to the extension bracket 20 and the L-shaped clamping frame 23. The upper end of the rotating shaft 24 is fixedly connected to a rotating rod 25 that is attached to the upper surface of the extension bracket 20. A limit block 22 that is in contact with the rotating rod 25 is fixedly provided at the top of the end of the extension bracket 20. The torsion spring 27 is used to make the L-shaped clamping rod always have a tendency to rotate, and the rotating rod 25 always has a tendency to turn to the limit block 22. Both ends of each L-shaped clamping frame 23 are provided with clamping rollers 26 for rolling contact with the outer wall of the lower battery shell 1. The four L-shaped clamping frames 23 are divided into two groups and approach each other from the width direction to complete the clamping of the battery lower shell 1. During this process, a clamping roller 26 on the L-shaped clamping frame 23 first contacts the outer wall of the long side of the battery lower shell 1, and then continues to approach the side wall of the battery lower shell 1 as the extension bracket 20. During this process, the clamping roller 26 rolls along the outer wall of the battery lower shell 1, thereby causing the L-shaped clamping frame 23 to rotate around the rotating shaft 24 until the clamping roller 26 at the other end of the L-shaped clamping frame 23 contacts and clamps against the outer wall of the short side of the battery lower shell 1, thereby completing the clamping and fixing of the right-angle wall of the battery lower shell 1. This method first contacts and clamps the long side wall of the battery lower shell 1, and then contacts and clamps the wide side wall of the battery lower shell 1, thereby completing the clamping process.

[0051] The bottom of both ends of the support plate 15 are fixedly provided with a connecting plate 17 located outside the double-axis bidirectional cylinder 19, and the outside of each connecting plate 17 is fixedly connected with a horizontal limiting slide rail 18, and the top of each extension bracket 20 is slidably connected to the limiting slide rail 18. In order to ensure that the extension brackets 20 can stably move toward each other, the extension brackets 20 are slidably connected to the limiting slide rail 18, so that the two extension brackets 20 can stably move toward each other, thereby ensuring that the four L-shaped clamping frames 23 can stably clamp the battery lower shell 1.

[0052] The claw end of each of the clamping claw cylinders 28 is arranged downward, and the two finger ends of the clamping claw cylinders 28 are fixedly connected with L-shaped clamping fingers 30, and the two L-shaped clamping fingers 30 are provided with anti-slip patches on the sides that contact the shell wall of the battery lower shell 1. Since the flange formed at the edge of the battery lower shell 1 will touch the finger ends of the clamping claw cylinders 28 when the clamping claw cylinders 28 clamp the side wall of the battery lower shell 1 from above, the L-shaped clamping fingers 30 are respectively installed at the two claw ends of the clamping claw cylinders 28, and the L-shaped clamping fingers 30 move toward each other to complete the clamping and fixing of the side wall of the battery lower shell 1. In this process, the L-shaped clamping fingers 30 are used to avoid the flange extending outward at the top edge of the battery lower shell 1.

[0053] The gantry material moving assembly 2 includes a gantry 3 arranged in a vertical state, a mobile slide 5 movably arranged on the top of the gantry 3, a horizontal rack 8 fixedly arranged on the top of the gantry 3, a first motor 6 fixedly arranged on the mobile slide 5, and a lifting mechanism fixedly arranged on the outside of the mobile slide 5. The top of the gantry 3 is fixedly provided with a horizontal slide rail 4 for sliding connection of the mobile slide 5. The output shaft of the first motor 6 passes through the mobile slide 5 and is fixedly connected with a first gear 7, and the first gear 7 is meshed with the horizontal rack 8. The first motor 6 drives the first gear 7 to roll on the horizontal rack 8, thereby driving the mobile slide 5 fixedly connected thereto to move horizontally along the horizontal slide rail 4 on the top of the gantry 3, so as to drive the lifting mechanism and the clamping claw assembly 14 to move back and forth between the conveyor line and the cart 32, thereby realizing the translation process of the lower housing 1 of the battery between the conveyor line and the cart 32.

[0054] The lifting mechanism includes a longitudinal beam 9 slidably connected to the moving slide 5, a vertical rack 13 fixedly arranged on one side of the longitudinal beam 9, and a second motor 11 fixedly arranged on the moving slide 5. The output of the second motor 11 passes through the moving slide 5 and is fixedly connected to a second gear 12. The second gear 12 is meshed with the vertical rack 13. The outer side of the moving slide 5 is fixedly connected to a vertical slide rail 10 for sliding connection of the longitudinal beam 9. The second motor 11 drives the second gear 12 to roll on the vertical rack 13. Since the vertical rack 13 is fixedly connected to the longitudinal beam 9, the rotation of the second gear 12 drives the longitudinal beam 9 to move up and down along the vertical slide rail 10. In this way, the clamp assembly 14 drives the lower battery housing 1 to rise and fall.

[0055] The above embodiments only express one or several implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the attached claims.

Claims

1. A battery lower shell welding production line with an automatic circulation stacking device, It is characterized in that include: A gantry material moving assembly (2) having an output end capable of two-axis movement; A clamping claw assembly (14) is arranged on the output end of the gantry material moving assembly (2), and the clamping claw assembly (14) comprises four L-shaped clamping frames (23) capable of horizontally clamping and positioning the battery lower shell (1) from four ends thereof, and two clamping claw cylinders (28) capable of downwardly clamping the two side walls of the battery lower shell (1) respectively; A trolley (32) for loading vertically stacked battery lower shells (1), wherein the tops of both ends of the trolley (32) are provided with vertically arranged U-shaped handles (33); The stacking assembly comprises a ramp platform (35) located below the end of the moving path of the output end of the gantry material transfer assembly (2), two guide rods (37) located above the ramp platform (35) and used for the cart (32) to pass through, two rectangular sliders (38) respectively fixed on the two guide rods (37), two adjustable sliders (43) respectively fixed on the two guide rods (37), and two interception levers (47) respectively hinged on the two rectangular sliders (38), each of the adjustable sliders (43) being connected to a tension spring (46) for elastically pulling the free end of the corresponding interception lever (47); The free ends of the two intercepting levers (47) are arranged facing each other to block the U-shaped push handle (33) on the trolley (32) passing between the two guide rods (37); Support rod frames (36) extending upward are fixedly arranged on both sides of the slope platform (35), and each guide rod (37) is fixedly arranged on the top of the corresponding support rod frame (36), and the length direction of the guide rod (37) is consistent with the slope direction of the slope platform (35); A transversely extending strip support plate (39) is fixedly connected to the opposite sides of the two rectangular sliders (38); a connecting shaft (40) perpendicular to the strip support plate (39) is fixedly provided at the extended end of the strip support plate (39); one end of the intercepting lever (47) is hinged to the connecting shaft (40), and the other end extends toward the direction of the rectangular slider (38) to between the two guide rods (37); Each of the adjustable sliders (43) is movably sleeved on the guide rod (37). A first threaded hole is provided on one side of the adjustable slider (43). A hand screw (44) is screwed into the first threaded hole and is pressed inwardly against the guide rod (37). One end of the tension spring (46) is sleeved on the hand screw (44), and the other end is sleeved on a punching avoidance strip formed in the middle of the interception lever (47). The rectangular slider (38) is located between the adjustable slider (43) and the free end of the interception lever (47). The tension spring (46) causes the free end of the interception lever (47) to always have a tendency to press against the rectangular slider (38).

2. A battery lower shell welding production line with an automatic circulation stacking device according to claim 1, It is characterized in that The rectangular sliding block (38) is provided with a second threaded hole, into which a locking bolt (42) is screwed for pressing the guide rod (37) inwardly.

3. A battery lower shell welding production line with an automatic circulation stacking device according to claim 1, It is characterized in that The clamping jaw assembly (14) further comprises a support plate (15) and two biaxial opposing cylinders symmetrically arranged at the bottom of both ends of the support plate (15); the top of the support plate (15) is upwardly connected to the movable output end of the gantry material moving assembly (2) via a hinge seat (16); the two biaxial opposing cylinders are parallel to each other; an extension bracket (20) perpendicular to the biaxial opposing cylinder and extending outward is fixedly connected to the output shaft at both ends of each biaxial opposing cylinder; and the middle part of each L-shaped clamping frame (23) is connected to the end of the upper extension bracket (20) via a rotating shaft (24).

4. A battery lower shell welding production line with an automatic circulation stacking device according to claim 3, It is characterized in that The upper end of the rotating shaft (24) is axially connected to the end of the extension bracket (20), and a torsion spring (27) is sleeved on the rotating shaft (24). The upper and lower ends of the torsion spring (27) are respectively fixedly connected to the extension bracket (20) and the L-shaped clamping frame (23). The upper end of the rotating shaft (24) is fixedly connected to a rotating rod (25) that is attached to the upper surface of the extension bracket (20). A limit block (22) that is in contact with the rotating rod (25) is fixedly provided at the top of the end of the extension bracket (20). The torsion spring (27) is used to make the L-shaped clamping rod always have a tendency to rotate, and the rotating rod (25) always has a tendency to turn towards the limit block (22). Both ends of each L-shaped clamping frame (23) are provided with a pressing roller (26) for rolling contact with the outer wall of the battery lower shell (1).

5. A battery lower shell welding production line with an automatic circulation stacking device according to claim 3, It is characterized in that The bottoms of both ends of the support plate (15) are fixedly provided with connecting plates (17) located outside the double-axis bidirectional cylinder (19), the outer side of each connecting plate (17) is fixedly connected to a horizontal limit slide rail (18), and the top of each extension bracket (20) is slidably connected to the limit slide rail (18).

6. A battery lower shell welding production line with an automatic circulation stacking device according to claim 1, It is characterized in that The claw end of each of the clamping claw cylinders (28) is arranged downwards, and both finger ends of the clamping claw cylinder (28) are fixedly connected to L-shaped clamping fingers (30), and the sides of the two L-shaped clamping fingers (30) that contact the shell wall of the battery lower shell (1) are provided with anti-slip patches.

7. A battery lower shell welding production line with an automatic circulation stacking device according to claim 1, It is characterized in that The gantry material transfer assembly (2) comprises a gantry (3) arranged in a vertical state, a movable slide (5) movably arranged on the top of the gantry (3), a horizontal rack (8) fixedly arranged on the top of the gantry (3), a first motor (6) fixedly arranged on the movable slide (5), and a lifting mechanism fixedly arranged on the outside of the movable slide (5); a horizontal slide rail (4) for sliding connection of the movable slide (5) is fixedly arranged on the top of the gantry (3); an output shaft of the first motor (6) passes through the movable slide (5) and is fixedly connected to a first gear (7); the first gear (7) is meshed with the horizontal rack (8).

8. A battery lower shell welding production line with an automatic circulation stacking device according to claim 7, It is characterized in that The lifting mechanism comprises a longitudinal beam (9) slidably connected to a movable slide (5), a vertical rack (13) fixedly arranged on one side of the longitudinal beam (9), and a second motor (11) fixedly arranged on the movable slide (5); the output of the second motor (11) passes through the movable slide (5) and is fixedly connected to a second gear (12); the second gear (12) is meshed with the vertical rack (13); and a vertical slide rail (10) for sliding connection with the longitudinal beam (9) is fixedly connected to the outer side of the movable slide (5).

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