A clamping device, a magazine splicing device and a splicing method

Abstract

The application provides a clamping device, a material box splicing device and a splicing method. The clamping device comprises a connecting plate, the connecting plate has at least two supporting arms, the lower ends of the at least two supporting arms are connected with clamps, the clamps are provided with clamping cavities, the end portions of the clamps are provided with universal devices, the universal devices rotate after being stressed to make part of the structures thereon deviate outward from the clamping cavities, the middle portions of the clamps are provided with movable plates which can be vertically displaced, the bottoms of the clamps are hingedly connected with limiting devices, the hingedly connected limiting devices form first and second positions, when in the first position, the limiting devices simultaneously contact the bottoms of the clamping cavities and the bottoms of the movable plates, when in the second position, one end of the limiting device is away from the clamping cavities and the limiting device is in an inclined state. The clamping device can stably clamp carbon plate modules which extend in three directions and keep the carbon plate modules stable during movement, and the mutual splicing of the carbon plate modules is realized.

Description

Technical Field

[0001] This invention relates to the field of graphitization furnace technology for new energy anode materials, and particularly to a clamping device, a material box splicing device, and a splicing method. Background Technology

[0002] New energy anode materials are a crucial component of power batteries. With the booming development of new energy vehicles, the demand for battery anode materials has also experienced explosive growth. Graphitization is the most critical step in anode material production, utilizing resistance heating to heat carbonaceous materials to 2300-3000℃, transforming amorphous, disordered carbon layers into an ordered graphite crystalline structure. Currently, the market primarily uses Atchison graphitization furnaces, internally heated series graphitization furnaces, and box-type graphitization furnaces for graphitization production. Among these, box-type graphitization furnaces are widely used due to their large single-load capacity and low cost per ton of graphite powder. Existing box-type graphitization furnaces divide the entire furnace core into several equal-volume chambers. The anode material is directly placed in a feed box surrounded by graphite plates. Because graphite plates are conductive, the feed box itself heats up when electricity is applied, thus serving as both a container for the anode material and a heating element.

[0003] Currently, the material box structure of box-type graphitization furnaces has the following problems: First, as shown in the existing patent publication CN220322038U, the material box structure of a box-type graphitization furnace has poor stability. Most currently used rectangular material boxes are prone to deformation or breakage due to the thermal expansion of the carbon plates themselves and the materials after power is applied, affecting the lifespan of the material box. Second, manual assembly is difficult, inefficient, carries high safety risks, and is labor-intensive. Because the material box is assembled from plates and columns, apart from the upper and lower plates of the box body which are easy to install, the assembly of the other four wall plates is very complex, and there is also a safety hazard of the carbon plates on the walls tipping over. Summary of the Invention

[0004] The purpose of this invention is to provide a clamping device, a material box splicing device, and a splicing method, which improves the structural stability of the material box, increases the efficiency of carbon plate assembly, and reduces assembly costs.

[0005] The technical solution of the present invention is: a clamping device, including a connecting plate, the connecting plate having at least two support arms, the lower ends of the at least two support arms being connected to a clamp, the clamp having a clamping cavity, the end of the clamp having a universal joint, the universal joint rotating under force to offset a portion of its structure from near the clamping cavity outward; the middle of the clamp having a movable plate capable of vertical displacement, the bottom of the clamp being hinged to a limiting device, the hinged limiting device forming a first position and a second position, in the first position, the limiting device simultaneously contacting the bottom of the clamping cavity and the bottom of the movable plate, in the second position, one end of the limiting device moving away from the clamping cavity and the limiting device being inclined.

[0006] Preferably, the clamping device further includes a drive source and a driven wheel driven and connected to the drive source. The driven wheel is rotatably disposed between two clamps, and an eccentric column is provided on the driven wheel. The moving plate has an opening, the upper end of which is a plane and the lower end is an arc surface. The column is placed in the opening. When the column contacts the plane, the moving plate moves upward. When the column contacts the arc surface, the moving plate moves downward.

[0007] Preferably, the limiting device is provided at both the end and the middle of the clamp; the limiting device includes a mounting block connected to the clamp and a support plate hinged to the mounting block, the support plate being a folded plate or a flat plate, the support plate of the folded plate being placed at the edge of the clamp, and the support plate of the flat plate being placed at the middle of the clamp.

[0008] Preferably, the support plate of the folding plate structure includes a first plate and a second plate connected to one end of the first plate. The second plate is inclined from the first plate to form an obtuse angle, with the obtuse angle facing upward. A hinge point is provided on the surface of the first plate near the second plate. The hinge point is hinged to the mounting block. The second plate is in contact with the moving plate. The first plate corresponds to the position of the clamping cavity.

[0009] Preferably, the universal joint includes a universal ball seat, a universal ball head hinged to the universal ball seat, and a first rod and a second rod respectively disposed at both ends of the universal ball head. The universal ball seat is connected to a clamp, and the first rod and the second rod can rotate around the universal ball head. The universal ball head can drive the first rod and the second rod to swing in the universal ball seat.

[0010] Preferably, the universal ball seat has an axially elongated groove, one end of the universal ball head is fitted into the elongated groove, and a cone for limiting the radial rotation of the universal ball head is provided in the elongated groove.

[0011] Preferably, when there are three support arms, the clamp and clamping cavity are Y-shaped; when there are two support arms, the clamp and clamping cavity are L-shaped.

[0012] The present invention also provides a material box splicing device for placing carbon plate modules in a graphitization furnace to form a carbon plate box. The device includes a guide rail located beside the graphitization furnace and extending along the X direction, a truss that rises and falls above the graphitization furnace in the Z direction, and the aforementioned clamping device that moves along the truss in the Y direction. The clamping device and the truss move together in the Z direction.

[0013] Preferably, the carbon plate box includes multiple carbon plate modules, each carbon plate module including a carbon pillar and two first carbon plates and a second carbon plate inserted around the carbon pillar, wherein one of the first carbon plates is further provided with a carbon pillar at its end; the second carbon plate and / or the first carbon plate of one carbon plate module are inserted with the carbon pillar of another carbon plate module to form a honeycomb-shaped carbon plate box.

[0014] The present invention also provides a method for assembling material bins, using the above-mentioned material bin assembly device, comprising the following steps:

[0015] Step 1: Start the clamping device and move it along the guide rail to the storage position of the carbon plate module, and align the clamping cavity with one of the carbon plate modules;

[0016] Step 2: Lowering the truss and clamping device. During the descent, the carbon plate module is inserted into the clamping cavity. During the insertion process, one end of the universal device extends into the slot on the carbon column for inserting the second carbon plate until the carbon plate module is fully inserted into the clamping cavity and the limiting device contacts the bottom of the carbon plate module and the bottom of the moving plate.

[0017] Step 3: Lift the truss and clamping device, and move the clamping device to the corresponding position in the graphitization furnace; lower the truss and clamping device.

[0018] Step 4: Drive the moving plate to move upward. When the moving plate releases the pressure on one end of the limiting device, the carbon plate module at the other end of the limiting device unlocks. At this time, the carbon plate module slides down with its own weight until it falls into a specific position inside the graphitization furnace.

[0019] Step 5: Repeat steps 1-4, inserting the second carbon plate of the new carbon plate module into the carbon pillar of the carbon plate module from step 4.

[0020] Repeat the above steps until the carbon plate box is assembled in the graphitization furnace.

[0021] Compared with related technologies, the beneficial effects of the present invention are as follows:

[0022] 1. The clamping device of the present invention can stably clamp carbon plate modules extending in three directions and maintain the stability of the carbon plate modules during the movement process, thereby realizing the splicing of carbon plate modules.

[0023] 2. The lever structure of the limiting device of the present invention, the carbon plate module enters the clamping cavity from bottom to top in the unlocked state, and the carbon plate module enters the clamping cavity from top to bottom in the locked state, providing a locking in one direction, which not only facilitates clamping, but also ensures effective locking during displacement.

[0024] Third, the present invention proposes a honeycomb-shaped carbon plate box, which has uniform stress distribution and high stability, making the space inside the carbon plate box uniform, improving current transmission efficiency, increasing the heating efficiency of the graphitization furnace, and extending the service life of the graphitization furnace.

[0025] Fourth, this invention proposes a honeycomb-shaped carbon plate box that can be assembled using multiple clamping devices simultaneously without interference, thereby improving assembly efficiency. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the material box splicing device in use according to Embodiment 1 of the present invention;

[0027] Figure 2 for Figure 1 A schematic diagram of the carbon plate box inside the graphitization furnace;

[0028] Figure 3 for Figure 1 A schematic diagram of the assembly between the carbon pillars and carbon plates in the diagram;

[0029] Figure 4 for Figure 1 A schematic diagram of the clamping device;

[0030] Figure 5 for Figure 4 An exploded view of the drive source and connecting board in the diagram;

[0031] Figure 6 for Figure 4 A schematic diagram of the moving plate in the middle;

[0032] Figure 7 for Figure 4 An exploded view of the limiting device in the diagram;

[0033] Figure 8 for Figure 4 A schematic diagram of the fixture in the diagram;

[0034] Figure 9 for Figure 4 A schematic diagram of the driven wheel in the diagram;

[0035] Figure 10 for Figure 4 A schematic diagram of the structure of the universal joint in the middle;

[0036] Figure 11 A schematic diagram illustrating the docking of the clamping device with the carbon column module;

[0037] Figure 12 A schematic diagram showing the limiting device in the first position when the clamping device grips the carbon column module;

[0038] Figure 13 A schematic diagram of releasing the carbon plate module for the clamping device;

[0039] Figure 14 A schematic diagram of the assembled carbon plate box inside the graphitization furnace;

[0040] Figure 15 This is a schematic diagram of the clamping device according to Embodiment 2 of the present invention;

[0041] Figure 16a The current density distribution diagram is shown for the honeycomb carbon plate.

[0042] Figure 16b This is a current density distribution diagram of a rectangular carbon plate. Detailed Implementation

[0043] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other. For ease of description, the terms "upper," "lower," "left," and "right" used below only indicate that they correspond to the upper, lower, left, and right directions in the accompanying drawings and do not limit the structure.

[0044] Example 1

[0045] like Figure 1 As shown in the figure, this embodiment provides a method for placing carbon plate modules inside a graphitization furnace 1 to form a carbon plate box 2. Two guide rails 10 extending in the X direction are provided on both sides of the graphitization furnace 1 in the Y direction. Carbon plate modules are stored on the sides of the graphitization furnace 1, and the guide rails 10 extend to the storage position of the carbon plate modules to provide sufficient operating range for the clamping device.

[0046] At least two trusses 9 are mounted on the guide rail 10. Each truss 9 includes a hydraulic telescopic cylinder 8 and a top frame 7. The top frame 7 is n-shaped. The cylinder of the hydraulic telescopic cylinder 8 is slidably connected to the guide rail 10. The two vertical rods of the n-shaped top frame 7 are respectively connected to the telescopic rods of the hydraulic telescopic cylinder 8 on both sides. A clamping device 11 is connected to the horizontal rod of the n-shaped top frame 7. The clamping device 11 is driven by a motor and a lead screw to move along the Y direction on the horizontal rod. The hydraulic telescopic cylinder 8 drives the top frame 7 to rise and fall in the Z direction.

[0047] The inner surface of the graphitization furnace 1 is coated with insulating and heat-insulating materials to ensure the insulation of the enclosure and prevent excessive temperature. In this embodiment, two clamping devices 11 are provided. Due to the characteristics of the honeycomb structure and the rationality of the structure of the clamping devices 11, the simultaneous use of the two clamping devices 11 will not cause interference. When using the two clamping devices 11 simultaneously, the two clamping devices 11 enter from both ends of the graphitization furnace 1 respectively.

[0048] like Figure 2 As shown, in this embodiment, the carbon plate box 2 is honeycomb-shaped, consisting of multiple... Figure 3 The carbon plate modules are assembled. The assembly of the carbon plate modules is achieved through a clamping device. For example... Figure 3 As shown, the carbon plate module includes a carbon column 5 and two first carbon plates 3 and a second carbon plate 4 inserted around the carbon column 5. One of the first carbon plates 3 also has a carbon column 5 at its end. Following the hoisting sequence, the second carbon plate 4 of the second carbon plate module entering the graphitization furnace 1 is inserted into one of the slots 51 on the carbon column 5 of the first carbon plate module, and the first carbon plate 3 of the third carbon plate module is inserted into another slot 51 on the carbon column 5 of the first carbon plate module. The first carbon plates 3 and 4 on the first carbon plate module are then inserted into the carbon columns 5 of adjacent carbon plate modules, respectively. This process is repeated to form a... Figure 2 The structure is honeycomb-like. The height of the carbon plate module is less than the height of the graphitization furnace 1.

[0049] The carbon column 5 is provided with three slots 51. The carbon plate module first places the carbon plate around the slots of the carbon column 5. The number of carbon plates in the vertical direction can be adjusted according to the height of the graphitization furnace 1, and the number of carbon columns 5 can also be adjusted according to the height of the graphitization furnace 1.

[0050] The thickness of the first carbon plate 3 is less than the thickness of the second carbon plate 4, and the thickness of the second carbon plate 4 is twice the thickness of the first carbon plate 3. When current flows from left to right through the carbon plate box 2, the thicker second carbon plate 4 can carry the combined current transmitted by the first carbon plate 3. When necessary, the number of components in the carbon plate module can be reduced to adapt to the box structure (e.g., ...). Figure 15 (As shown).

[0051] like Figure 4 As shown, the clamping device 11 includes a connecting rod 12, a drive source 30, a connecting plate 17, a clamp 16, a moving plate 19, an angle plate 18, a universal joint 24, a limiting device 29, a bolt 22, and a bushing 23. The drive source 30 includes a power box 13, a driving wheel 14, and a driven wheel 15. The limiting device 29 includes a mounting block 21 and a support plate 20. The driving wheel 14 and the driven wheel 15 are meshing bevel gears.

[0052] like Figure 5As shown, the output shaft at the bottom of the power box 13 is sequentially connected to the intermediate shaft of the drive wheel 14 and the connecting plate 17. The power box 13 controls the rotation of the drive wheel 14 and the driven wheel 15. The connecting rod 12 is fixed to the top of the power box 13, and the connecting rod 12 is slidably connected to the top frame 7 (e.g., Figure 1 (As shown).

[0053] The connecting plate 17 has three arms forming a Y shape. For example... Figure 8 As shown, there are three clamps 16, each connected to two adjacent support arms. The three clamps 16 form a Y-shaped clamping cavity 161, giving the clamps a bent shape. A driven wheel 15 is rotatably mounted in the middle of the bend via bolts 22, and a bushing 23 is installed between the driven wheel 15 and the clamp 16. A universal joint 24 (such as...) is mounted at the end of the clamp 16. Figure 4 As shown). The middle of the Y-shaped cavity 161 can accommodate the carbon column 5 from the center of the carbon plate module (as shown). Figure 12 (As shown).

[0054] like Figure 9 As shown, a column 151 is eccentrically mounted on the driven wheel 15. Figure 6 As shown, the movable plate 19 has an opening 191 at its upper end and a series of limiting plates 194 arranged in a V-shape at its lower end. The upper end of the opening 191 is a flat surface 192, and the lower end of the opening 191 is an arc surface 193. Figure 4 As shown, the movable plate 19 is positioned vertically at the bend in the middle of the clamp 16. The column 151 is fitted into the opening 191. Angle plates 18 are provided on both sides of the movable plate 19. The angle plates 18 are L-shaped, with one end connected to the clamp 16 and the other end abutting against the side of the movable plate 19. They guide the vertical displacement of the movable plate 19 and limit its deflection.

[0055] like Figure 4 As shown, the three clamps 16 are equipped with three driven wheels 15 and three movable plates 19. A universal joint 24 is provided at the end of each clamp 16. When subjected to force, the universal joint 24 rotates, causing a portion of its structure to shift outward from the vicinity of the clamping cavity 161. A limiting device 29 is hinged to the bottom of each clamp 16, forming a first position and a second position. In the first position, the limiting device 29 is in contact with both the bottom of the clamping cavity 161 and the bottom of the movable plate 19. In the second position, one end of the limiting device 29 is away from the clamping cavity 161, and the limiting device 29 is inclined.

[0056] like Figure 1 , Figure 7 , Figure 12As shown, each clamp 16 is equipped with three mounting blocks 21 via bolts 22, one in the middle and the other two at both ends. The mounting blocks 21 are vertically oriented and have hinge holes at their bottom. The support plate 20 comes in two specifications: a first support plate 201 with a folded plate structure and a second support plate 202 with a flat plate structure. The mounting block 21 in the middle is hinged to the second support plate 202. In the first position, one end of the second support plate 202 abuts against the bottom of the carbon plate module in the clamping cavity 161, and the other end abuts against the bottom of the moving plate 19. The part of the second support plate 202 that abuts against the carbon plate module has a T-shaped structure, increasing the contact area and ensuring locking stability. The mounting blocks 21 at both ends are hinged to the first support plate 201 via bolts 22. The first support plate 201 includes a first plate 2011 and a second plate 2012 connected to one end of the first plate 2011. The second plate 2012 is inclined from the first plate 2011 to form an obtuse angle, with the obtuse angle facing upwards. A hinge point 2013 is provided on the surface of the first plate 2011 near the second plate 2012. The hinge point 2013 is hinged to the mounting block 21 by bolts 22. In the first position, one end of the second plate 2012 abuts against the bottom of the carbon plate module in the clamping cavity 161, and the other end abuts against the limiting plate 194 of the moving plate 19. Similarly, the part of the first support plate 201 that abuts against the carbon plate module has a T-shaped structure.

[0057] The distribution of the limiting device 9, in conjunction with the connecting plate 17 on the clamp 16, constrains the vertical freedom of the carbon plate module, ensuring the stability of the carbon plate module during movement.

[0058] like Figure 10 As shown, the universal joint 24 includes a universal ball seat 26, a universal ball head 25 hinged to the universal ball seat 26, and a first rod 27 and a second rod 28 respectively disposed at both ends of the universal ball head 25. The universal ball seat 26 is connected to the clamp 16, and the first rod 27 is disposed near the clamping cavity 161. The universal ball seat 26 has an axially extending groove 261, and one end of the universal ball head 25 is fitted into the groove 261. The groove 261 contains a cone 262 for limiting the radial rotation of the universal ball head 25. The first rod 27 is adapted to the slot 51. The length of the first rod 27 is shorter than the length of the second rod 28. During installation, it is necessary to consider that the universal ball head 25 will completely move away from the clamping cavity 161 after rotation, so the angular position of the universal ball seat 26 on the clamp 16 needs to be appropriate. The first link 27 can rotate around the axis of the universal ball head 25, and at the same time, it can also swing together with the universal ball head 25 around the universal ball seat 26 along the long groove 261.

[0059] The present invention also provides a method for assembling material bins, which uses the above-mentioned material bin assembly device and includes the following steps:

[0060] Step S1: Activate the clamping device, moving it along the guide rail 10 to the storage position of the carbon plate module, and align the clamping cavity 161 with one of the carbon plate modules. The storage position fixture needs to facilitate the insertion of the stored carbon plate module into the clamping device. Either provide space at each storage point for the clamping device to descend, or provide a lifting device at each storage point so that the carbon plate module can exceed the height limit device 29 before being lowered to abut against the limit device 29.

[0061] Step two: Activate the hydraulic telescopic cylinder 8 to lower the truss 9 and clamping device. During the descent, the carbon plate module is inserted into the clamping cavity 161. During insertion, the first rod 27 on the universal joint 24 extends into the slot 51 on the carbon column 5 for inserting the second carbon plate 4, thus constraining the freedom of the carbon column 5. This continues until the carbon plate module is fully inserted into the clamping cavity 161, and the limiting device 29 contacts the bottom of the carbon plate module and the bottom of the moving plate 19 (e.g., ...). Figure 12 (As shown).

[0062] Step 3: Activate the hydraulic telescopic cylinder 8 to lift the truss 9 and clamping device, and move the clamping device to the corresponding position in the graphitization furnace 1; lower the truss 9 and clamping device.

[0063] Step four: Start the power box 13 to drive the driven wheel 15 to rotate, thereby moving the moving plate 19 upward through the column 151. When the moving plate 19 releases the pressure on one end of the support plate 20, the support plate 20 rotates to open the clamping cavity 161, unlocking the carbon plate module. At this time, the carbon plate module slides down under its own weight until it falls into a specific position inside the graphitization furnace 1 (e.g., ...). Figure 13 (As shown). During this process, the carbon column 5 slides down, causing the first rod 27 to rotate, thus disengaging the first rod 27 from the slot 51. The hydraulic telescopic cylinder 8 is activated to lift the clamping device 11, so that the clamp 16 is completely disengaged from the carbon plate module.

[0064] Step 5: Repeat steps 1-4, inserting the second carbon plate of the new carbon plate module into the carbon pillar 5 of the carbon plate module from step 4. (Example...) Figure 11 As shown, during this process, the second rod 28 of the bottom universal joint 24 first contacts the top surface of the first carbon plate 3 on the carbon column module in step four. As the first carbon plate 3 moves upward, it causes the second rod 28 to rotate. The second rod 28 then drives the first rod 27 to rotate, causing the first rod 27 to disengage from the slot 51 and contact the side surface of the carbon plate 3, releasing the carbon column 5. As the clamping device 11 descends, causing the carbon column module in step four to continue rising, the universal joint 24 above the clamp 16 repeats the above actions until the splicing of the two carbon column modules is completed.

[0065] Repeat the above steps until the carbon plate box 2 is assembled in the graphitization furnace 1 (e.g., Figure 14 (As shown).

[0066] like Figure 14 As shown, a wooden frame 6 is installed around the inside of the graphitization furnace 1, and the carbon plate box 2 is built inside the wooden frame 6.

[0067] Example 2

[0068] In this embodiment, the clamp 16 is L-shaped, and the carbon plate module consists of two carbon plates connected to a carbon column to form a rectangular box, which is suitable for overlapping when there is insufficient space around the carbon plate box.

[0069] like Figures 16a-16b As shown, numerical simulations were performed on honeycomb and rectangular carbon plates. The results show that the current density of the honeycomb structure is higher than that of the rectangular structure, indicating that the honeycomb structure can transfer current more effectively. Furthermore, the current cloud diagram of the honeycomb structure indicates that the carbon powder in the graphitization furnace has higher heating efficiency and more uniform heating.

[0070] This invention proposes an intelligent assembly scheme for a graphitization furnace. The carbon plate boxes are assembled into a honeycomb shape, and the perimeter is fixed with a wooden frame that fits the characteristics of the carbon column grooves. This scheme can improve the current transmission efficiency, increase the heating efficiency of the graphitization furnace, and provide ideas for graphitization furnace assembly schemes.

[0071] This invention proposes a method and apparatus for modular assembly of carbon fiber plates. It uses hydraulic telescopic cylinders, clamping devices, and gear transmission to control the transport of carbon fiber plate modules to a designated position and height, and can also control the simultaneous descent of carbon fiber plate modules. The method can use two sets of clamping devices simultaneously to improve clamping efficiency. The apparatus has a simple structure and low cost, and can provide a solution for the transport and assembly of carbon fiber plate modules.

[0072] The lever structure of the limiting device of the present invention allows the carbon plate module to enter the clamping cavity from bottom to top in an unlocked state, while the carbon plate module is locked from top to bottom, providing a directional locking that not only facilitates clamping but also ensures effective locking during displacement.

[0073] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A clamping device, characterized in that, The device includes a connecting plate (17), a drive source (30), and a driven wheel (15) driven by the drive source (30). The connecting plate (17) has at least two arms, and the lower ends of the at least two arms are connected to a clamp (16). The clamp (16) has a clamping cavity (161). The end of the clamp (16) is provided with a universal joint (24). When the universal joint (24) is subjected to force, it rotates so that part of its structure shifts outward from the clamping cavity (161). The middle part of the clamp (16) is provided with a movable plate (19) that can move vertically. The bottom of the clamp (16) is hinged with a limiting device (29). The hinged limiting device (29) forms a first position and a second position. In the first position, the limiting device (29) moves with the first position. When in the second position, one end of the limiting device (29) is away from the clamping cavity (161) and the limiting device (29) is inclined; the driven wheel (15) is rotated between two clamps (16), and the driven wheel (15) is provided with an eccentric column (151); the moving plate (19) is provided with an opening (191), the upper end of the opening (191) is a plane (192), and the lower end is an arc surface (193). The column (151) is placed in the opening (191). When the column (151) contacts the plane (192), the moving plate (19) moves upward. When the column (151) contacts the arc surface (193), the moving plate (19) moves downward.

2. The clamping device according to claim 1, characterized in that, The limiting device (29) is provided at both the end and the middle of the clamp (16); the limiting device (29) includes a mounting block (21) connected to the clamp (16) and a support plate (20) hinged to the mounting block (21). The support plate (20) is a folded plate or a flat plate. The support plate (20) of the folded plate is placed on the edge of the clamp (16), and the support plate (20) of the flat plate is placed in the middle of the clamp (16).

3. The clamping device according to claim 2, characterized in that, The support plate (20) of the folded plate structure includes a first plate (2011) and a second plate (2012) connected to one end of the first plate (2011). The second plate (2012) is inclined from the first plate (2011) to form an obtuse angle, with the obtuse angle facing upward. A hinge point (2013) is provided on the surface of the first plate (2011) near the second plate (2012). The hinge point (2013) is hinged to the mounting block (21). The second plate (2012) is in contact with the moving plate (19). The first plate (2011) corresponds to the position of the clamping cavity (161).

4. The clamping device according to claim 1, characterized in that, The universal joint (24) includes a universal ball seat (26), a universal ball head (25) hinged to the universal ball seat (26), and a first rod (27) and a second rod (28) respectively disposed at both ends of the universal ball head (25). The universal ball seat (26) is connected to the clamp (16). The first rod (27) and the second rod (28) can rotate around the universal ball head (25). The universal ball head (25) can drive the first rod (27) and the second rod (28) to swing in the universal ball seat (26).

5. The clamping device according to claim 4, characterized in that, The universal ball seat (26) has an axial groove (261), one end of the universal ball head (25) is fitted into the long groove (261), and the long groove (261) has a cone (262) for restricting the radial rotation of the universal ball head (25).

6. The clamping device according to claim 1, characterized in that, When there are three support arms, the clamp (16) and the clamping cavity (161) are Y-shaped; when there are two support arms, the clamp (16) and the clamping cavity (161) are L-shaped.

7. A material box splicing device for placing carbon plate modules into a graphitization furnace (1) to form a carbon plate box (2), characterized in that, The system includes a guide rail (10) located beside the graphitization furnace (1) and extending along the X direction, a truss (9) that rises and falls above the graphitization furnace (1) in the Z direction, and a clamping device as described in any one of claims 1-6 that moves along the truss (9) in the Y direction, the clamping device and the truss (9) moving together in the Z direction.

8. The bin splicing device according to claim 7, characterized in that, The carbon plate box (2) includes multiple carbon plate modules. Each carbon plate module includes a carbon column (5) and two first carbon plates (3) and a second carbon plate (4) inserted around the carbon column (5). One of the first carbon plates (3) is also provided with a carbon column (5) at its end. The second carbon plate (4) and / or the first carbon plate (3) of one carbon plate module are inserted with the carbon column (5) of another carbon plate module to form a honeycomb-shaped carbon plate box (2).

9. A method for assembling material bins, using the material bin assembly device as described in claim 7 or 8, characterized in that, Includes the following steps: Step 1: Start the clamping device and move it along the guide rail (10) to the storage position of the carbon plate module, and align the clamping cavity (161) with one of the carbon plate modules; Step 2: Lowering the truss (9) and clamping device. During the descent, the carbon plate module is inserted into the clamping cavity (161). During the insertion process, one end of the universal device (24) extends into the slot (51) on the carbon column (5) for inserting the second carbon plate (4) until the carbon plate module is fully inserted into the clamping cavity (161) and the limiting device (29) contacts the bottom of the carbon plate module and the bottom of the moving plate (19). Step 3: Lift the truss (9) and clamping device, and move the clamping device to the corresponding position in the graphitization furnace (1); lower the truss (9) and clamping device; Step 4: Drive the moving plate (19) to move upward. When the moving plate (19) releases the pressure on one end of the limiting device (29), the carbon plate module at the other end of the limiting device (29) is unlocked. At this time, the carbon plate module slides down with its own weight until it falls into a specific position inside the graphitization furnace (1). Step 5, repeat steps 1 to 4, insert the second carbon plate of the new carbon plate module into the carbon column (5) of the carbon plate module in step 4; Repeat the above steps until the carbon plate box (2) is assembled in the graphitization furnace (1).

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