Pressing plate fixing device and welding jig thereof

Abstract

The utility model provides a pressing plate fixing device and a welding jig thereof, the pressing plate fixing device comprises a support main body, the support main body comprises a panel frame, a guide rail and a bottom frame, the panel frame and the guide rail are installed on the bottom frame, and the panel frame is used for installing a bottom plate and a front plate; the driving device is mounted on the bottom frame; the bottom plate fixing device slides on the guide rail, the bottom plate fixing device comprises a pressing plate, the pressing plate is fixedly connected to the driving device, and the driving device is used for driving the pressing plate to move forwards and press the bottom plate or move backwards to be away from the bottom plate; and a pressing assembly is arranged at the upper end of the mechanical arm, the lower end of the mechanical arm is rotatably connected to the bottom plate fixing device, and the pressing assembly can press the front plate. According to the technical scheme of the embodiment, automatic fixing can be achieved through the bottom plate fixing device before welding of the ring main unit air chamber bottom plate, automatic fixing can be achieved through the mechanical arm before welding of the ring main unit air chamber front plate, and therefore the manufacturing efficiency of the ring main unit air chamber is improved.

Description

Technical Field

[0001] The utility model belongs to the field of assembly welding, and in particular relates to a pressing plate fixing device and a welding jig thereof. Background Art

[0002] The ring main unit air chamber is an electrical device. The front plate, lower front plate and bottom plate are components of the ring main unit air chamber. During the manufacturing process of the ring main unit air chamber, the front plate and bottom plate need to be welded to the lower front plate to complete the subsequent assembly process of the ring main unit air chamber.

[0003] Currently, during the welding process for the ring main unit (RMU) chamber, one person positions and secures the bottom plate to the lower front plate, while another person performs the welding. After the bottom plate is welded to the lower front plate, one person positions and secures the front plate to the lower front plate, while another person performs the welding. This method results in a time-consuming welding process and low manufacturing efficiency for the RMU chamber. Utility Model Content

[0004] The embodiment of the utility model provides a pressure plate fixing device and a welding jig thereof, which can realize automatic fixing before welding the front plate and the bottom plate of the ring network cabinet air chamber, thereby improving the manufacturing efficiency of the ring network cabinet air chamber.

[0005] In a first aspect, an embodiment of the present invention provides a pressure plate fixing device for a welding jig, comprising:

[0006] A bracket body, the bracket body comprising a panel frame, a guide rail, and a bottom frame, the panel frame and the guide rail being mounted on the bottom frame, the panel frame comprising a first frame and a second frame, the first frame being used to mount the bottom plate, the second frame being used to mount the front plate, the first frame being perpendicular to the bottom frame, the second frame being parallel to the bottom frame, the first frame being located between the second frame and the guide rail, and the second frame being higher than the first frame;

[0007] a driving device, the driving device being mounted on the chassis;

[0008] a bottom plate fixing device, the bottom plate fixing device slides on the guide rail, the bottom plate fixing device includes a pressing plate, the pressing plate is fixedly connected to the driving device, and the driving device is used to drive the pressing plate to move forward and press the bottom plate, or move backward away from the bottom plate;

[0009] At least one robotic arm, wherein a clamping assembly is provided at the upper end of the robotic arm, and the lower end of the robotic arm is rotatably connected to the base plate fixing device, wherein when the robotic arm rotates forward to a first position, the clamping assembly is pressed against the front plate, and when the robotic arm rotates backward to a second position, the clamping assembly is higher than the second frame.

[0010] According to some embodiments of the present invention, a plurality of first buffer assemblies are provided at the front end of the pressure plate, the first buffer assemblies include an outer tube and an inner tube, the outer tube is fixed to the pressure plate, the inner tube is movable inside the outer tube through an elastic component, the inner tube includes a butt joint, the butt joint protrudes from the outer tube, and the butt joint is used to abut the front plate.

[0011] According to some embodiments of the present invention, the clamping assembly includes a first pulley and a second buffer assembly, the second buffer assembly is movably connected to the robotic arm, the first pulley is installed on the second buffer assembly, and the first pulley is used to abut the front plate.

[0012] According to some embodiments of the present invention, the base plate fixing device also includes a side plate and an adapter plate, the pressure plate and the side plate are installed on the adapter plate, the adapter plate slides on the guide rail, and the robotic arm can be rotatably connected to the side plate.

[0013] According to some embodiments of the present invention, the robotic arm includes multiple support rods, and a second pulley is provided on the front side of the support rod at the lowermost side of the robotic arm. When the robotic arm rotates to the first position, the second pulley is pressed against the base plate.

[0014] According to some embodiments of the present invention, the robotic arm includes a limit plate and a spring, the side plate is provided with a limit block, the limit plate is fixed to the support rod at the lowermost side of the robotic arm, the limit plate is provided with a sliding groove, the limit block slides in the sliding groove, one end of the spring is fixed to the limit block, and the other end of the spring is fixed to the limit plate.

[0015] According to some embodiments of the present invention, the pressure plate fixing device includes two side plates and two mechanical arms, and the two side plates are respectively located on both sides of the bottom plate fixing device.

[0016] According to some embodiments of the present invention, a suction cup and a trigger device are further included, wherein the suction cup is located on the rear side of the first frame, the suction cup is used to adsorb the bottom plate to the first frame, the trigger device is connected to the suction cup, and the trigger device abuts against the bottom plate.

[0017] According to some embodiments of the present invention, the front panel is provided with at least one through hole, and the panel frame is provided with at least one positioning axis, the positioning axis is passed through the through hole of the front panel, the number of the positioning axis is less than or equal to the number of the through holes of the front panel, and the positioning axis is used to position the front panel.

[0018] In a second aspect, an embodiment of the present invention further provides a welding jig, comprising the pressure plate fixing device as described in the first aspect.

[0019] The embodiment of the utility model includes: a bracket body, the bracket body includes a panel frame, a guide rail and a base frame, the panel frame and the guide rail are installed on the base frame, the panel frame includes a first frame and a second frame, the first frame is used to install the base plate, the second frame is used to install the front plate, the first frame is perpendicular to the base frame, the second frame is parallel to the base frame, the first frame is located between the second frame and the guide rail, and the second frame is higher than the first frame; a driving device, the driving device is installed on the base frame; a base plate fixing device, the base plate fixing device slides on the guide rail, the base plate fixing device includes a pressing plate, the pressing plate is fixedly connected to the driving device, and the driving device is used to drive the pressing plate to move forward and press the base plate, or move backward away from the base plate; at least one mechanical arm, the upper end of the mechanical arm is provided with a pressing assembly, the lower end of the mechanical arm is rotatably connected to the base plate fixing device, when the mechanical arm rotates forward to a first position, the pressing assembly presses the front plate, and when the mechanical arm rotates backward to a second position, the pressing assembly is higher than the second frame. According to the technical solution of this embodiment, the bottom plate fixing device can be used to automatically fix the bottom plate of the ring network cabinet air chamber before welding, and the robotic arm can be used to automatically fix the front plate of the ring network cabinet air chamber before welding, thereby improving the manufacturing efficiency of the ring network cabinet air chamber. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a structural diagram of a pressure plate fixing device provided by an embodiment of the present utility model;

[0021] Figure 2 This is a structural diagram of a pressure plate fixing device for installing a base plate and a front plate provided by another embodiment of the present invention;

[0022] Figure 3 This is a structural diagram of a base plate fixing device and a mechanical arm provided in another embodiment of the present invention. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0024] It should be noted that although the device schematics illustrate functional module divisions and the flowcharts illustrate logical sequences, in certain circumstances, the steps shown or described may be performed in a sequence that differs from the module divisions in the device or the sequence in the flowcharts. The terms "first," "objective," and the like in the specification, claims, or accompanying drawings are used to distinguish similar objects and are not necessarily intended to describe a specific sequence or precedence.

[0025] The embodiment of the utility model includes: a bracket body, the bracket body includes a panel frame, a guide rail and a base frame, the panel frame and the guide rail are installed on the base frame, the panel frame includes a first frame and a second frame, the first frame is used to install the base plate, the second frame is used to install the front plate, the first frame is perpendicular to the base frame, the second frame is parallel to the base frame, the first frame is located between the second frame and the guide rail, and the second frame is higher than the first frame; a driving device, the driving device is installed on the base frame; a base plate fixing device, the base plate fixing device slides on the guide rail, the base plate fixing device includes a pressing plate, the pressing plate is fixedly connected to the driving device, and the driving device is used to drive the pressing plate to move forward and press the base plate, or move backward away from the base plate; at least one mechanical arm, the upper end of the mechanical arm is provided with a pressing assembly, the lower end of the mechanical arm is rotatably connected to the base plate fixing device, when the mechanical arm rotates forward to a first position, the pressing assembly presses the front plate, and when the mechanical arm rotates backward to a second position, the pressing assembly is higher than the second frame. According to the technical solution of this embodiment, the bottom plate fixing device can be used to automatically fix the bottom plate of the ring network cabinet air chamber before welding, and the robotic arm can be used to automatically fix the front plate of the ring network cabinet air chamber before welding, thereby improving the manufacturing efficiency of the ring network cabinet air chamber.

[0026] Reference Figures 1 to 3 , the pressure plate fixing device provided in this embodiment includes:

[0027] The bracket body includes a panel frame 300, a guide rail 400 and a bottom frame 500. The panel frame 300 and the guide rail 400 are installed on the bottom frame 500. The panel frame 300 includes a first frame 310 and a second frame 320. The first frame 310 is used to install the bottom plate 100, and the second frame 320 is used to install the front plate 200. The first frame 310 is perpendicular to the bottom frame 500, and the second frame 320 is parallel to the bottom frame 500. The first frame 310 is located between the second frame 320 and the guide rail 400, and the second frame 320 is higher than the first frame 310.

[0028] A driving device 600 is mounted on the base frame 500;

[0029] The bottom plate fixing device 700 slides on the guide rail 400 and includes a pressing plate 710. The pressing plate 710 is fixedly connected to the driving device 600. The driving device 600 is used to drive the pressing plate 710 to move forward and press the bottom plate 100, or to move backward away from the bottom plate 100.

[0030] At least one robotic arm 800 is provided with a clamping assembly 810 at the upper end of the robotic arm 800, and the lower end of the robotic arm 800 is rotatably connected to the base plate fixing device 700. When the robotic arm 800 rotates forward to the first position, the clamping assembly 810 is pressed against the front plate 200. When the robotic arm 800 rotates backward to the second position, the clamping assembly 810 is higher than the second frame 320.

[0031] It should be noted that, as described in the following embodiments, the limit block 731 and the sliding slot 831 provide limits for the rotation of the robotic arm 800. When the robotic arm 800 is in the first position, the front end of the sliding slot 831 abuts against the limit block 731, and the clamping assembly 810 abuts against the front plate 200; when the robotic arm 800 is in the second position, the rear end of the sliding slot 831 abuts against the limit block 731, and the clamping assembly 810 is higher than the second frame 320.

[0032] It should be noted that the pressing assembly 810 is higher than the second frame 320, so that when the robotic arm 800 rotates to the first position, it can press the front panel 200 in a direction perpendicular to the front panel 200, thereby preventing the front panel 200 installed on the second frame 320 from shifting.

[0033] It should be noted that, in this embodiment, the base plate 100 is pressed and fixed to the first frame 310 by the base plate fixing device 700, and the front plate 200 is pressed and fixed to the second frame 320 by the robotic arm 800. This embodiment only improves the fixation of the base plate 100 and the front plate 200, and does not involve improvements to the fixation of panels in other directions of the ring network cabinet air chamber.

[0034] It should be noted that the base frame 500 provides a mounting base for the panel frame 300 and the guide rail 400. The guide rail 400 is mounted to the base frame 500 via mounting plates, which are mounted at both ends of the guide rail 400. Components that can slide on the guide rail 400 slide between the mounting plates. The bottom plate 100 abuts against the guide rail 400, which provides vertical positioning for the bottom plate 100.

[0035] It should be noted that the drive device 600 can be a pneumatic cylinder, which includes a cylinder barrel and a piston rod. The cylinder barrel is mounted on the base frame 500, and the piston rod is inserted into and slides inside the cylinder barrel. One end of the piston rod is fixed to the pressure plate 710. The forward and backward movement of the piston rod drives the pressure plate 710 forward or backward on the slide rail. The base plate fixing device 700 moves backward away from the base plate 100 to provide operating space for installing the base plate 100. After the base plate 100 is installed on the first frame 310, the base plate fixing device 700 moves forward again and presses the base plate 100 against the first frame 310.

[0036] It should be noted that the front panel 200 is installed on the second frame 320, the bottom panel fixing device 700 moves backward, and then the bottom panel 100 is installed on the first frame 310. The driving device 600 drives the bottom panel fixing device 700 to move forward, and the bottom panel 100 is pressed against the first frame 310 by the pressing plate 710, thereby fixing the bottom panel 100 to the first frame 310; the pressing plate 710 drives the robotic arm 800 to move forward until the lower end of the robotic arm 800 abuts against the bottom panel 100. The lower end of the robotic arm 800 is supported by the bottom panel 100, and the robotic arm 800 rotates from the second position to the first position along the connection with the bottom panel fixing device 700. The height of the pressing component 810 is reduced and its horizontal position moves forward, and the front panel 200 is pressed by the pressing component 810, thereby fixing the front panel 200 to the second frame 320.

[0037] In addition, in one embodiment, referring to Figure 2 and Figure 3 A plurality of first buffer assemblies 720 are provided at the front end of the pressure plate 710. The first buffer assemblies 720 include an outer cylinder 723 and an inner cylinder 721. The outer cylinder 723 is fixed to the pressure plate 710. The inner cylinder 721 can be moved inside the outer cylinder 723 through an elastic component. The inner cylinder 721 includes a butt joint 722. The butt joint 722 protrudes from the outer cylinder 723 and is used to abut the front plate 200.

[0038] It should be noted that the first buffer assembly 720 acts as a buffer during the fixing process of the base plate 100, preventing the pressure plate 710 from damaging the base plate 100 during the fixing process. The elastic component can be a spring. During the fixing process of the base plate 100, the pressure plate 710 moves forward, the abutment head 722 abuts the front plate 200, the base plate 100 applies pressure to the abutment head 722, and the inner cylinder 721 moves backward inside the outer cylinder 723. The spring is squeezed and elastically deformed, thereby applying a forward elastic force to the inner cylinder 721. The driving device 600 drives the base plate fixing device 700 forward until the pressure applied by the base plate 100 on the first buffer assembly 720 is balanced with the thrust of the driving device 600 on the pressure plate 710. The base plate 100 is then pressed against the first frame 310 by the first buffer assembly 720, thereby fixing the base plate 100 to the first frame 310.

[0039] In addition, in one embodiment, referring to Figure 2 and Figure 3 The pressing assembly 810 includes a first pulley 811 and a second buffer assembly 812 . The second buffer assembly 812 is movably connected to the robotic arm 800 . The first pulley 811 is installed on the second buffer assembly 812 . The first pulley 811 is used to abut the front plate 200 .

[0040] It should be noted that when the robotic arm 800 is in the second position, the first pulley 811 is at a certain vertical distance from the robotic arm 800. During the process of the robotic arm 800 rotating from the second position to the first position, the first pulley 811 abuts against the front plate 200. The first pulley 811 is subjected to an upward support force, causing the second buffer assembly 812 to move toward the robotic arm 800, shortening the vertical distance between the first pulley 811 and the robotic arm 800, until the mounting bracket connecting the first pulley 811 and the second buffer assembly 812 abuts against the robotic arm 800. During the process of the robotic arm 800 securing the front plate 200 to the second frame 320, the second buffer assembly 812 acts as a buffer.

[0041] It should be noted that when the first pulley 811 abuts against the front plate 200 and the vertical distance with the robotic arm 800 is shortened, the first pulley 811 slides on the guide rail 400; when the robotic arm 800 rotates backward from the first position to the second position, the first pulley 811 slides on the guide rail 400; when the upper end of the robotic arm 800 and the front plate 200 produce a horizontal position change, the first pulley 811 will not damage the front plate 200.

[0042] In addition, in one embodiment, referring to Figure 1 and Figure 3 The bottom plate fixing device 700 also includes a side plate 730 and an adapter plate 740 . The pressure plate 710 and the side plate 730 are installed on the adapter plate 740 . The adapter plate 740 slides on the guide rail 400 . The robotic arm 800 can be rotatably connected to the side plate 730 .

[0043] It should be noted that the adapter plate 740 slides on the guide rail 400 via the slider, and the pressure plate 710 drives the side plate 730 and the adapter plate 740 to slide on the guide rail 400, thereby enabling the side plate 730 to drive the robotic arm 800 to slide on the guide rail 400. The robotic arm 800 can be rotatably connected to the side plate 730 via connectors such as screws.

[0044] In addition, in one embodiment, referring to Figure 2 and Figure 3 The robotic arm 800 includes multiple support rods. A second pulley 820 is provided on the front side of the support rod at the lowermost side of the robotic arm 800. When the robotic arm 800 rotates to the first position, the second pulley 820 is pressed against the base plate 100.

[0045] It should be noted that if Figure 1 As shown, the plurality of support rods are perpendicular to each other and fixed, so as to adapt to the shape of the panel frame 300 , so that the support rods will not damage the bottom plate 100 , the front plate 200 and the panel frame 300 .

[0046] It should be noted that during the forward movement of the pressure plate 710, the second pulley 820 of the robotic arm 800 abuts against the bottom plate 100 and receives the support force of the bottom plate 100. The second pulley 820 slides downward on the bottom plate 100, and the robotic arm 800 rotates from the first position to the second position along the connection with the side plate 730, thereby causing the first pulley 811 to abut against the front plate 200. The second pulley 820 prevents the lower end of the robotic arm 800 from damaging the bottom plate 100 during contact with the bottom plate 100.

[0047] In addition, in one embodiment, referring to Figure 3 The robotic arm 800 includes a limit plate 830 and a spring 840. The side plate 730 is provided with a limit block 731. The limit plate 830 is fixed to the support rod at the lower side of the robotic arm 800. The limit plate 830 is provided with a sliding groove 831. The limit block 731 slides in the sliding groove 831. One end of the spring 840 is fixed to the limit block 731, and the other end of the spring 840 is fixed to the limit plate 830.

[0048] It should be noted that the limit block 731 and the sliding slot 831 work together to provide a limit for the rotation of the robotic arm 800 between the first position and the second position. When the robotic arm 800 is in the second position, the rear end of the sliding slot 831 abuts the limit block 731. The robotic arm 800 rotates forward from the second position to the first position. The second pulley 820 abuts the bottom plate 100 and slides downward. The robotic arm 800 drives the limit plate 830 to rotate until the front end of the sliding slot 831 abuts the limit block 731, preventing the second pulley 820 from sliding on the bottom plate 100. The mounting plate connecting the first pulley 811 and the second buffer assembly 812 abuts against the robotic arm 800.

[0049] It should be noted that the spring 840 is provided to prevent the mechanical arm 800 from rotating too fast and causing damage to the front plate 200. When the mechanical arm 800 rotates to the second position, the spring 840 is not deformed; when the second pulley 820 abuts against the bottom plate 100 and slides downward, the limit block 731 fixed to the side plate 730 slides in the sliding groove 831 of the limit plate 830, and the spring 840 is squeezed to produce elastic deformation and exert a forward elastic force on the limit plate 830, thereby slowing down the rotation speed of the mechanical arm 800. As the angle of the mechanical arm 800 rotates forward increases, the elastic force of the spring 840 on the limit plate 830 increases, and the speed of the mechanical arm 800 rotating forward slows down, thereby preventing the first pulley 811 from damaging the front plate 200.

[0050] In addition, in one embodiment, referring to Figure 3 The pressure plate fixing device includes two side plates 730 and two robotic arms 800 , and the two side plates 730 are respectively located on both sides of the bottom plate fixing device 700 .

[0051] It should be noted that during the implementation process, two side panels 730 and two robotic arms 800 are set, and the side panels 730 and the robotic arms 800 are symmetrical about the front panel 200, so that the pressure on the front panel 200 is balanced and stable, and the robotic arms 800 have a better fixing effect on the front panel 200.

[0052] In addition, in one embodiment, referring to Figure 1 and Figure 2 , further comprising a suction cup 330 and a trigger device, the suction cup 330 being located on the rear side of the first frame 310 , the suction cup 330 being used to adsorb the base plate 100 onto the first frame 310 , the trigger device being connected to the suction cup 330 , and the trigger device being in contact with the base plate 100 .

[0053] It should be noted that the base plate 100 is installed on the rear side of the first frame 310. At this time, the trigger device abuts against the base plate 100, so that the trigger device generates an electrical signal. The trigger device transmits the electrical signal to the suction cup 330. The electrical signal drives the suction cup 330 to work, so that the suction cup 330 adsorbs the base plate 100 and installs the base plate 100 on the first frame 310, thereby preventing the base plate 100 from tipping over under the action of gravity, and providing a structural basis for the base plate fixing device 700 to fix the base plate 100.

[0054] In addition, the front plate 200 is provided with at least one through hole. Figure 1 and Figure 2 The panel frame 300 is provided with at least one positioning shaft 340 , which passes through the through hole of the front plate 200 . The number of the positioning shafts 340 is less than or equal to the number of through holes of the front plate 200 , and the positioning shaft 340 is used to position the front plate 200 .

[0055] It should be noted that during the manufacturing process of the ring main unit air chamber, other parts need to be installed on the welded front panel 200 of the ring main unit air chamber. Therefore, the front panel 200 of the ring main unit air chamber is usually provided with through holes. This embodiment does not involve structural improvements to the front panel 200, but utilizes the original through holes of the front panel 200 as auxiliary positioning holes for the front panel 200.

[0056] It should be noted that when installing the front panel 200, align the through hole provided on the front panel 200 with the positioning shaft 340, and then place the front panel 200 on the second frame 320. The positioning shaft 340 and the second frame 320 realize the positioning and installation of the front panel 200. After the front panel 200 and the base plate 100 are installed on the panel frame 300, the driving device 600 drives the pressure plate fixing device forward.

[0057] It should be noted that the bottom plate 100 is mounted on the first frame 310, the bottom of the bottom plate 100 is in contact with the guide rail 400, the trigger device is in contact with the bottom plate 100 and transmits an electrical signal to the suction cup 330, the electrical signal drives the suction cup 330 to work, thereby adsorbing the bottom plate 100 on the suction cup 330, and the bottom plate 100 is mounted on the first frame 310; the through hole of the front plate 200 is aligned with the positioning shaft 340, and the front plate 200 is mounted on the second frame 320; the driving device 600 works, driving the base plate fixing device 700 to move forward, the side plate 730 drives the robotic arm 800 to move forward, the second pulley 820 abuts against the base plate 100, and the robotic arm 800 rotates forward from the first position to the second position along the connection with the side plate 730, and the first pulley 811 presses and fixes the front plate 200 to the second frame 320; during the forward movement of the base plate fixing device 700, the abutment head 722 presses and fixes the base plate 100 to the first frame 310.

[0058] In one embodiment, the present invention further provides a welding jig, including: Figure 1 Platen fixture shown.

[0059] It should be noted that the welding jig can be the pressure plate fixture itself, or other devices that use the pressure plate fixture, such as the welding jig of the ring main unit gas chamber. This embodiment does not limit the specific type of welding jig, as long as it can be used with the above-mentioned pressure plate fixture.

[0060] Those skilled in the art will readily conceive of other embodiments of the present application after considering the specification and practicing the embodiments disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present application that follow the general principles of this application and include common knowledge or customary techniques in the art that are not disclosed herein.

[0061] It should be understood that the present application is not limited to the exact structures described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

[0062] The above is a specific description of the preferred implementation of the present invention, but the present invention is not limited to the above implementation. Technical personnel familiar with the field can also make various equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of the present invention.

Claims

1. A pressure plate fixing device for a welding jig, wherein the welding jig is used for welding a ring main unit air chamber, the ring main unit air chamber comprising a front plate and a bottom plate, characterized in that: include: A bracket body, the bracket body comprising a panel frame, a guide rail, and a bottom frame, the panel frame and the guide rail being mounted on the bottom frame, the panel frame comprising a first frame and a second frame, the first frame being used to mount the bottom plate, the second frame being used to mount the front plate, the first frame being perpendicular to the bottom frame, the second frame being parallel to the bottom frame, the first frame being located between the second frame and the guide rail, and the second frame being higher than the first frame; a driving device, the driving device being mounted on the chassis; a bottom plate fixing device, the bottom plate fixing device slides on the guide rail, the bottom plate fixing device includes a pressing plate, the pressing plate is fixedly connected to the driving device, and the driving device is used to drive the pressing plate to move forward and press the bottom plate, or move backward away from the bottom plate; At least one robotic arm, wherein a clamping assembly is provided at the upper end of the robotic arm, and the lower end of the robotic arm is rotatably connected to the base plate fixing device, wherein when the robotic arm rotates forward to a first position, the clamping assembly is pressed against the front plate, and when the robotic arm rotates backward to a second position, the clamping assembly is higher than the second frame.

2. The pressing plate fixing device of the welding jig according to claim 1, characterized in that: A plurality of first buffer assemblies are provided at the front end of the pressure plate, and the first buffer assemblies include an outer tube and an inner tube, the outer tube is fixed to the pressure plate, and the inner tube is movable inside the outer tube through an elastic component, and the inner tube includes an abutment joint, which protrudes from the outer tube and is used to abut the front plate.

3. The pressing plate fixing device of the welding jig according to claim 1, characterized in that: The pressing assembly includes a first pulley and a second buffer assembly, the second buffer assembly is movably connected to the robotic arm, the first pulley is mounted on the second buffer assembly, and the first pulley is used to abut against the front plate.

4. The pressing plate fixing device of the welding jig according to claim 1, characterized in that: The bottom plate fixing device also includes a side plate and an adapter plate. The pressure plate and the side plate are installed on the adapter plate. The adapter plate slides on the guide rail, and the mechanical arm is rotatably connected to the side plate.

5. The pressing plate fixing device of the welding jig according to claim 4, characterized in that: The robotic arm includes a plurality of support rods, and a second pulley is provided on the front side of the support rod at the lowermost side of the robotic arm. When the robotic arm rotates to the first position, the second pulley is pressed against the base plate.

6. The pressing plate fixing device of the welding jig according to claim 5, characterized in that: The robotic arm includes a limit plate and a spring. The side plate is provided with a limit block. The limit plate is fixed to the support rod at the lowermost side of the robotic arm. The limit plate is provided with a sliding groove. The limit block slides in the sliding groove. One end of the spring is fixed to the limit block, and the other end of the spring is fixed to the limit plate.

7. The pressing plate fixing device of the welding jig according to claim 6, characterized in that: The pressure plate fixing device includes two side plates and two mechanical arms, and the two side plates are respectively located on both sides of the bottom plate fixing device.

8. The pressing plate fixing device of the welding jig according to claim 1, characterized in that: It also includes a suction cup and a trigger device, the suction cup is located on the rear side of the first frame, the suction cup is used to adsorb the bottom plate to the first frame, the trigger device is connected to the suction cup, and the trigger device abuts against the bottom plate.

9. The pressing plate fixing device of the welding jig according to claim 1, characterized in that: The front plate is provided with at least one through hole, and the panel frame is provided with at least one positioning shaft, which passes through the through hole of the front plate. The number of the positioning shafts is less than or equal to the number of the through holes of the front plate, and the positioning shaft is used to position the front plate.

10. A welding jig, characterized in that: It comprises the pressing plate fixing device according to any one of claims 1 to 9.

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