Laser cutting equipment for processing storage battery box body

Abstract

The invention relates to the field of metal laser cutting, and discloses laser cutting equipment for storage battery box machining, which comprises a rack, a workbench assembly and a laser generating assembly are arranged on the rack, and the laser generating assembly comprises a stand column bracket and a first linear module for driving the stand column bracket to move; the moving direction of the stand column supports is horizontally arranged, the two stand column supports are located on the two sides of the workbench assembly respectively, the workbench assembly is switched between a conveying state and a supporting state, and the workbench assembly in the conveying state is used for dragging a workpiece to be fed or discharged. The workbench assembly in the supporting state is used for supporting a workpiece subjected to laser cutting, and in the laser cutting process, the area between the two movable rotating rollers is used for avoiding laser, and the area between the two movable rotating rollers moves along with the laser in the moving direction of the stand column support.

Description

Technical Field

[0001] This invention relates to the field of metal cutting, specifically to the field of metal laser cutting, and particularly to a laser cutting device for processing battery boxes. Background Technology

[0002] Laser cutting is one of the preferred methods in the processing of battery (specifically lithium battery) casings, as it has advantages such as high precision, non-contact operation, stress-free operation, high processing efficiency, and high flexibility.

[0003] In laser cutting, the worktable is used to support the workpiece to be cut. In existing technologies, a bed-of-needles or a honeycomb worktable is generally used to support the workpiece. However, both of these support methods have some drawbacks. Specifically: Firstly, the contact area with the back of the workpiece is relatively small, especially with a bed-of-needles worktable. Therefore, during loading and unloading, manual or robotic arms are needed to move the workpiece vertically to avoid horizontal movement and scratching the back of the workpiece, making loading and unloading quite cumbersome. Secondly, debris from the cutting process falls into the honeycomb, making cleaning very inconvenient.

[0004] To address the aforementioned issues, this invention proposes a laser cutting device for processing battery enclosures. Summary of the Invention

[0005] To address the problems mentioned in the background above, the present invention provides a laser cutting device for processing battery boxes.

[0006] To achieve the above-mentioned technical objectives, the technical solution adopted by the present invention is as follows.

[0007] A laser cutting device for processing battery boxes includes a frame, on which a worktable assembly and a laser generating assembly are mounted. The laser generating assembly includes a column support and a first linear module for driving the column support to move. The column support moves in a horizontal direction, and there are two column supports located on both sides of the worktable assembly. The workbench assembly includes a fixed rotating roller mounted on the frame, two movable rotating rollers arranged side by side between two column supports, and a timing belt arranged between the fixed rotating roller and the movable rotating roller; The worktable assembly switches between conveying and supporting states. In conveying state, the worktable assembly is used to pull workpieces for loading or unloading. In supporting state, the worktable assembly is used to support the workpieces being laser-cut. During laser cutting, the area between the two movable rollers is used to avoid the laser, and the area between the two movable rollers moves along the direction of the column support along with the laser.

[0008] Further, two column supports are provided with a cross support, two ends of the cross support are respectively connected with the two column supports in a sliding connection along a vertical direction, a second linear module for driving the cross support to move is arranged on the column support, a laser generating element and a third linear module for driving the laser generating element to move are arranged on the cross support, a moving direction of the laser generating element is horizontally arranged and the moving direction of the laser generating element is perpendicular to a moving direction of the column support.

[0009] Further, an axis line of the fixed rotating roller is parallel to the moving direction of the laser generating element on the cross support, the fixed rotating roller is provided with eight fixed rotating rollers, which are fixed rotating roller one, fixed rotating roller two, fixed rotating roller three, fixed rotating roller four, fixed rotating roller five, fixed rotating roller six, fixed rotating roller seven and fixed rotating roller eight respectively; The input end of any one of the fixed rotating rollers is connected with a motor in a power connection; An axis line of the movable rotating roller is parallel to the moving direction of the laser generating element on the cross support, the two movable rotating rollers are located at the same height and are movable rotating roller one and movable rotating roller two respectively, and the laser emitted by the laser generating element passes through a region between the two movable rotating rollers from top to bottom.

[0010] Further, the fixed rotating roller one and the fixed rotating roller two are respectively located at two sides of the movable rotating roller along the axis line direction of the movable rotating roller, an outer circular surface highest point of the fixed rotating roller one, an outer circular surface highest point of the fixed rotating roller two and an outer circular surface highest point of the movable rotating roller are flush; The fixed rotating roller three is located directly below the fixed rotating roller one, and the fixed rotating roller four is located directly below the fixed rotating roller two; The fixed rotating roller five and the fixed rotating roller six are both located between the fixed rotating roller one and the fixed rotating roller two, the fixed rotating roller five and the fixed rotating roller six are located at the same height, a height of the fixed rotating roller five is located between the fixed rotating roller one and the fixed rotating roller three, an outer circular surface highest point of the fixed rotating roller five, an outer circular surface highest point of the fixed rotating roller six and an outer circular surface lowest point of the movable rotating roller are flush, the fixed rotating roller five is close to the fixed rotating roller one, and the fixed rotating roller six is close to the fixed rotating roller two; The fixed rotating roller seven is located directly below the fixed rotating roller five, the fixed rotating roller eight is located directly below the fixed rotating roller six, the fixed rotating roller seven and the fixed rotating roller eight are located at the same height, a height of the fixed rotating roller seven is located between the fixed rotating roller five and the fixed rotating roller three; A head end of the synchronous belt is connected with a tail end of the synchronous belt after sequentially passing through the movable rotating roller one, the fixed rotating roller one, the fixed rotating roller three, the fixed rotating roller four, the fixed rotating roller two, the movable rotating roller two, the fixed rotating roller six, the fixed rotating roller eight, the fixed rotating roller seven and the fixed rotating roller five, and forms a closed annular loop.

[0011] Further, the part of the synchronous belt between the fixed rotating roller one and the fixed rotating roller three and the part of the synchronous belt between the fixed rotating roller two and the fixed rotating roller four are named as fixed segments, and the workbench assembly further comprises a limiting component for clamping and limiting the movement of the fixed segments.

[0012] Further, the limiting component comprises two clamping plates respectively located at the two sides of the fixed segments and a driving module for driving the two clamping plates to move close to or away from each other, and the clamping plates are in sliding connection with the rack and the sliding direction is perpendicular to the surface of the fixed segments.

[0013] Further, the driving module comprises a linkage plate arranged on the rack in a vertical sliding manner and a driving piece for driving the linkage plate to move, the linkage plate is provided with two linkage holes arranged in an inclined manner, the distance between the two linkage holes decreases from bottom to top in the vertical direction, and the end of the clamping plate is provided with a linkage pin, and the linkage pins on the two clamping plates are in sliding connection with the two linkage holes respectively.

[0014] Further, the inner hollow of the movable rotating roller is provided with a plurality of heat dissipation holes arranged in the circumferential direction, and one end of the movable rotating roller is provided with a connecting air pipe through a rotary joint, and the end of the connecting air pipe is provided with a blower.

[0015] Further, the two column supports are provided with a heat insulation plate, the surface of the heat insulation plate is provided with an avoiding opening for avoiding laser, and the upper surface of the heat insulation plate is flush with the upper surface of the synchronous belt for supporting the workpiece.

[0016] Further, the heat insulation plate is provided below a connecting shell, the upper surface of the connecting shell is provided with an inlet located directly below the avoiding opening, the side surface of the connecting shell is provided with an inlet and outlet, an internal suction shell is installed in the connecting shell, one side of the internal suction shell is located in the inlet and outlet, water is stored in the internal suction shell, and the connecting shell is connected with the movable rotating roller.

[0017] Compared with the prior art, the present application has the beneficial effects that: 1、In the scheme, the clamping of the limiting component on the fixed segment of the synchronous belt is loosened, at this time, the column support is stationary, the motor operation can drive the synchronous belt to run, and convenient and rapid feeding or discharging can be realized. 2. In this solution, the fixed section of the synchronous belt is clamped by the limiting component. At this time: a) the column support is stationary, and the laser generating element is moved by the third linear module to achieve cutting of the workpiece along the moving direction of the laser generating element. During the cutting process, the area between the two movable rollers is used to avoid the laser; b) the column support moves and moves together with the movable rollers and the laser generating element. During this process, since the fixed section of the synchronous belt is clamped and limited, the operation of the part of the synchronous belt between the first fixed roller and the second fixed roller is similar to that of a crawler. Therefore, the workpiece placed on the synchronous belt is stationary, but the position of the area between the two movable rollers moves with the column support. That is, the area used to avoid the laser moves with the laser generating element, thereby achieving cutting of the workpiece along the moving direction of the column support. Its technological advantage lies in its ability to solve the problem of difficult debris cleaning; It should be noted that those skilled in the art would readily conceive of a method where the laser generating element remains stationary, the limiting component releases its clamping grip on the fixed section of the synchronous belt, and the motor drives the synchronous belt to move, which in turn moves the workpiece, thereby cooperating with the laser generating element to cut the workpiece along the moving direction of the column support. However, this method has its drawbacks: during the acceleration and deceleration phases of the synchronous belt, the workpiece is prone to shift due to inertia, which affects the accuracy of the laser cutting results. In contrast, in this solution, since the workpiece remains stationary, the cutting accuracy problem caused by the aforementioned offset does not exist; 3. This solution, through the use of high-temperature resistant synchronous belt technology, blower, heat insulation plate, and water medium, can avoid the impact of heat generated by laser cutting on the synchronous belt, ensuring the stable operation of this equipment; Furthermore, the blower can blow air outward through the heat dissipation holes to dissipate heat from the heat-affected zone around the workpiece cutting position. Since the cutting position is close to the moving roller, it can greatly hinder the heat from spreading to the surrounding area and reduce the impact of heat on the synchronous belt, resulting in better performance. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the stage assembly and the laser generator assembly; Figure 3 A three-dimensional diagram of the timing belt and the rotating roller; Figure 4 This is a side view of the timing belt and rotating roller; Figure 5 A schematic diagram of a rotating roller; Figure 6 This is a schematic diagram of the limiting component and the timing belt; Figure 7 is a schematic view of a laser generating assembly.

[0019] Reference signs in the drawings are as follows: 100, rack; 200, workbench assembly; 201, fixed rotating roller; 202, movable rotating roller; 2021, heat dissipation hole; 2022, connecting air pipe; 203, synchronous belt; 204, motor; 205, heat insulation plate; 206, clamping plate; 207, linkage plate; 208, linkage hole; 209, linkage pin; 210, driving piece; 211, connecting cover; 212, inner extraction shell; 300, laser generating assembly; 301, first linear module; 302, column support; 303, second linear module; 304, cross support; 305, third linear module; 306, laser generating element. DETAILED DESCRIPTION

[0020] In order to further illustrate the technical means and effects adopted by the present application to achieve the predetermined object, the specific embodiments, structures, features and effects according to the present application are described in detail below in combination with the drawings and preferred embodiments.

[0021] Embodiment one Referring to Figures 1-7 A laser cutting device for processing a battery box body comprises a rack 100, the rack 100 is provided with a workbench assembly 200 and a laser generating assembly 300, the former is used for supporting a workpiece to be cut, and the latter is used for providing laser required for cutting.

[0022] I. Laser generating assembly 300: Referring to Figure 7 The laser generating assembly 300 comprises a column support 302 and a first linear module 301 for driving the column support 302 to move, the moving direction of the column support 302 is horizontally arranged, further, the column support 302 is provided with two and located at two sides of the workbench assembly 200 respectively, and the first linear module 301 is correspondingly provided with two.

[0023] The two column supports 302 are provided with a cross support 304, the two ends of the cross support 304 are respectively connected with the two column supports 302 in a sliding connection along a vertical direction, and the column support 302 is provided with a second linear module 303 for driving the cross support 304 to move.

[0024] The cross support 304 is provided with a laser generating element 306 and a third linear module 305 for driving the laser generating element 306 to move, the moving direction of the laser generating element 306 is horizontally arranged and the moving direction of the laser generating element 306 is perpendicular to the moving direction of the column support 302.

[0025] The laser generating element 306 is used for emitting laser downward, which is realized by the prior art and will not be described herein. The three linear modules mentioned above can be realized by the prior art linear moving technology and will not be described herein.

[0026] Through the cooperation of the three linear modules mentioned above, the laser generating element 306 can be driven to move in the three-dimensional coordinate system.

[0027] II. The workbench assembly 200: Referring to Figures 2-6 The workbench assembly 200 includes rotating rollers installed on the rack 100, and the axis lines of the rotating rollers are parallel to the moving direction of the laser generating element 306.

[0028] The rotating rollers include fixed rotating rollers 201 and movable rotating rollers 202, wherein: the fixed rotating rollers 201 are provided in eight, and the movable rotating rollers 202 are provided in two.

[0029] The two movable rotating rollers 202 are arranged side by side, and further, the two ends of the movable rotating rollers 202 are connected with the two column supports 302 respectively, and the movable rotating rollers 202 are provided with two along the moving direction of the column supports 302 and are located at the same height.

[0030] The fixed rotating roller one and the fixed rotating roller two are located at the two sides of the movable rotating roller 202 along the axis line direction of the movable rotating roller 202, and the highest point of the outer circular surface of the fixed rotating roller one, the highest point of the outer circular surface of the fixed rotating roller two and the highest point of the outer circular surface of the movable rotating roller 202 are flush.

[0031] The fixed rotating roller three is located directly below the fixed rotating roller one, and the fixed rotating roller four is located directly below the fixed rotating roller two.

[0032] The fixed rotating roller five and the fixed rotating roller six are located between the fixed rotating roller one and the fixed rotating roller two, and the fixed rotating roller five and the fixed rotating roller six are located at the same height, the height of the fixed rotating roller five is located between the fixed rotating roller one and the fixed rotating roller three, the highest point of the outer circular surface of the fixed rotating roller five, the highest point of the outer circular surface of the fixed rotating roller six and the lowest point of the outer circular surface of the movable rotating roller 202 are flush, and further, the fixed rotating roller five is close to the fixed rotating roller one, and the fixed rotating roller six is close to the fixed rotating roller two.

[0033] The fixed rotating roller seven is located directly below the fixed rotating roller five, and the fixed rotating roller eight is located directly below the fixed rotating roller six, and the fixed rotating roller seven and the fixed rotating roller eight are located at the same height, and the height of the fixed rotating roller seven is located between the fixed rotating roller five and the fixed rotating roller three.

[0034] With Figure 4For example, the six peripheral rollers are respectively active roller one, fixed roller one, fixed roller three, fixed roller four, fixed roller two and active roller two in the counterclockwise direction, and the four inner rollers are respectively fixed roller five, fixed roller seven, fixed roller eight and fixed roller six in the counterclockwise direction.

[0035] The ten rollers are provided with a synchronous belt 203, and further, the head end of the synchronous belt 203 is sequentially wound around the active roller one, the fixed roller one, the fixed roller three, the fixed roller four, the fixed roller two, the active roller two, the fixed roller six, the fixed roller eight, the fixed roller seven and the fixed roller five, and then connected with the tail end of the synchronous belt 203 to form a closed annular loop.

[0036] Referring to Figure 2 , the input end power of any fixed roller is provided with a motor 204.

[0037] Referring to Figure 2 and Figure 6 , the part of the synchronous belt 203 between the fixed roller one and the fixed roller three and the part of the synchronous belt 203 between the fixed roller two and the fixed roller four are both named as fixed segments.

[0038] The workbench assembly 200 further comprises a limiting component for clamping and limiting the movement of the fixed segments, and the limiting component is correspondingly provided with two.

[0039] The limiting component comprises two clamping plates 206 respectively located on both sides of the fixed segments and a driving module for driving the two clamping plates 206 to move towards or away from each other, and the two clamping plates 206 are driven to move towards each other by the driving module, so that the clamping of the fixed segments can be realized, and vice versa, the clamping is released, and further, the clamping plate 206 and the rack 100 form a sliding connection and the sliding direction is perpendicular to the surface of the fixed segment.

[0040] Further, the driving module comprises a linkage plate 207 slidingly arranged on the rack 100 in the vertical direction and a driving piece 210 for driving the linkage plate 207 to move, and the driving piece 210 can adopt existing electric telescopic rod technology or existing air cylinder technology, which will not be described here.

[0041] The linkage plate 207 is provided with two inclined linkage holes 208, and the distance between the two linkage holes 208 decreases from bottom to top in the vertical direction, and the end of the clamping plate 206 is provided with a linkage pin 209, and the linkage pins 209 on the two clamping plates 206 respectively form a sliding connection with the two linkage holes 208.

[0042] Therefore, when the driving member 210 drives the linkage plate 207 to move upward or downward, the two clamping plates 206 can be driven to move away from each other or move close to each other through the cooperation of the linkage pin 209 and the linkage hole 208, so as to realize the loosening action or the clamping action.

[0043] It should be noted that the laser emitted by the laser generating element 306 passes through the area between the two movable rotating rollers 202 from top to bottom.

[0044] Working process of the first embodiment: Firstly, the limiting part loosens the clamping of the fixed section of the synchronous belt 203, at this time, the column support 302 is stationary, and the motor 204 can drive the synchronous belt 203 to run, so as to realize convenient and fast feeding or discharging; Secondly, the limiting part exerts clamping on the fixed section of the synchronous belt 203, at this time: a, the column support 302 is stationary, the horizontal support 304 is driven downward by the second linear module 303, so that the laser generating element 306 can approach the workpiece, and then the laser generating element 306 is driven to move by the third linear module 305, so as to realize the cutting of the workpiece along the moving direction of the laser generating element 306, during the cutting process, the area between the two movable rotating rollers 202 is used for avoiding laser; b, the column support 302 moves and drives the movable rotating rollers 202 to move together with the laser generating element 306, during the process, since the fixed section of the synchronous belt 203 is clamped and limited, the part of the synchronous belt 203 between the fixed rotating roller one and the fixed rotating roller two runs like a track, so the workpiece placed on the synchronous belt 203 is stationary, but the area between the two movable rotating rollers 202 moves together with the column support 302, that is, the area for avoiding laser moves together with the laser generating element 306, so as to realize the cutting of the workpiece along the moving direction of the column support 302; The cooperation of a and b can realize the final cutting of the workpiece, and the technical advantages are: 1. Realize convenient and fast feeding and discharging of the workpiece; 2. During cutting, the cutting scraps fall downward through the area between the two movable rotating rollers 202, so a storage container can be arranged below the area to receive the cutting scraps, so as to avoid the problem of difficult cleaning of the scraps; It should be noted that the person skilled in the art can easily think that the laser generating element 306 is stationary, the limiting part releases the clamping of the fixed section of the synchronous belt 203, and the motor 204 drives the synchronous belt 203 to move, so as to cooperate with the laser generating element 306 to cut the workpiece along the moving direction of the column support 302. However, this method has a disadvantage. Specifically, during the acceleration and deceleration stage of the synchronous belt 203, the workpiece is easily deviated under the action of inertia, thereby affecting the accuracy of the laser cutting result. In the present scheme, the workpiece remains stationary during the cutting process along the moving direction of the column support 302. Therefore, there is no cutting accuracy problem caused by the above deviation.

[0045] Embodiment Two During laser cutting, the temperature at the cutting position of the workpiece can reach several thousand degrees Celsius, and the temperature in the surrounding heat-affected zone can reach several hundred degrees Celsius. Therefore, from the perspective of long-term reliability, embodiment two is proposed.

[0046] Firstly, the synchronous belt 203 is made of high-temperature-resistant material, such as metal synchronous belt, which has the characteristics of high-temperature resistance.

[0047] Secondly, referring to Figure 5 , the inner hollow and outer circular surface of the movable rotating drum 202 is arrayed with a plurality of heat dissipation holes 2021 in the circumferential direction. One end of the movable rotating drum 202 is provided with a connecting air pipe 2022 through a rotary joint. The end of the connecting air pipe 2022 is connected with a blower and other equipment. Through the blower and other equipment, air can be blown out through the heat dissipation holes 2021 to achieve heat dissipation treatment of the heat-affected zone around the cutting position of the workpiece. Since the cutting position is close to the movable rotating drum 202, the heat can be greatly hindered from spreading to the surrounding area, thereby reducing the influence of heat on the synchronous belt 203.

[0048] Secondly, referring to Figure 3 and Figure 7 , a heat insulation plate 205 is arranged between the two column supports 302. The surface of the heat insulation plate 205 is provided with an avoiding opening for avoiding laser. The heat insulation plate 205 is made of heat insulation material, and the upper surface of the heat insulation plate 205 is flush with the upper surface of the synchronous belt 203 for supporting the workpiece. The technical advantage is that the cutting position is supported by the heat insulation plate 205 to prevent the influence of high temperature at the cutting position on the synchronous belt 203.

[0049] Secondly, the lower part of the heat insulation plate 205 is provided with a connecting cover 211, the upper surface of the connecting cover 211 is provided with an inlet located directly below the avoiding port, the side surface of the connecting cover 211 is provided with an inlet and outlet, the connecting cover 211 is internally provided with an internal extraction shell 212, one side of the internal extraction shell 212 is located in the inlet and outlet, the internal extraction shell 212 is internally provided with water, and the connecting cover 211 is connected with the movable rotating roller 202; the technical advantage lies in that the internal extraction shell 212 receives the crushed materials, the water is used to cool the crushed materials, the internal extraction shell 212 is regularly extracted for cleaning, and further, the connecting cover 211 and the internal extraction shell 212 are made of heat-conducting materials, which can assist in realizing the heat dissipation treatment of the surrounding area of the movable rotating roller 202.

[0050] In this way, through the cooperation of the above measures, the long-term stable use of the synchronous belt 203 can be ensured.

[0051] The above is only a preferred embodiment of the present application, and does not limit the present application in any form. Although the present application has been disclosed as above with a preferred embodiment, it is not intended to limit the present application. Any person skilled in the art can make some changes or modifications to the above disclosed technical content without departing from the scope of the technical solution of the present application, and any equivalent embodiments with equivalent changes and modifications are still within the scope of the present application.

Claims

1. A laser cutting device for processing battery casings, comprising a frame (100), on which a worktable assembly (200) and a laser generating assembly (300) are disposed, characterized in that, The laser generating assembly (300) includes a column support (302) and a first linear module (301) for driving the column support (302) to move. The column support (302) moves in a horizontal direction. There are two column supports (302) located on both sides of the worktable assembly (200). The workbench assembly (200) includes a fixed rotating roller (201) mounted on the frame (100), two movable rotating rollers (202) arranged side by side between two column supports (302), and a timing belt (203) arranged between the fixed rotating roller (201) and the movable rotating rollers (202). The worktable assembly (200) is set to switch between conveying state and support state. The worktable assembly (200) in conveying state is used to pull the workpiece for loading or unloading. The worktable assembly (200) in support state is used to support the workpiece being laser cut. During the laser cutting process, the area between the two movable rollers (202) is used to avoid the laser and the area between the two movable rollers (202) moves along the moving direction of the column support (302) along with the laser.

2. The laser cutting equipment for processing battery boxes according to claim 1, characterized in that, A horizontal support (304) is provided between the two column supports (302). The two ends of the horizontal support (304) are respectively connected to the two column supports (302) in a vertical direction. A second linear module (303) is provided on the column support (302) to drive the horizontal support (304) to move. A laser generating element (306) and a third linear module (305) are provided on the horizontal support (304) to drive the laser generating element (306) to move. The laser generating element (306) moves horizontally and its moving direction is perpendicular to the moving direction of the column support (302).

3. The laser cutting equipment for processing battery boxes according to claim 2, characterized in that, The axis of the fixed rotating roller (201) is parallel to the direction of movement of the laser generating element (306) on the horizontal support (304). There are eight fixed rotating rollers (201), namely fixed rotating roller one, fixed rotating roller two, fixed rotating roller three, fixed rotating roller four, fixed rotating roller five, fixed rotating roller six, fixed rotating roller seven and fixed rotating roller eight. The input end of any fixed rotating roller (201) is connected to a motor (204). The axis of the movable rotating roller (202) is parallel to the direction of movement of the laser generating element (306) on the horizontal support (304). The two movable rotating rollers (202) are at the same height and are respectively movable rotating roller one and movable rotating roller two. The laser emitted by the laser generating element (306) passes through the area between the two movable rotating rollers (202) from top to bottom.

4. The laser cutting equipment for processing battery boxes according to claim 3, characterized in that, Fixed rotating roller 1 and fixed rotating roller 2 are located on both sides of the movable rotating roller (202) along its own axis, and the highest point of the outer circle of fixed rotating roller 1, the highest point of the outer circle of fixed rotating roller 2 and the highest point of the outer circle of movable rotating roller (202) are aligned. Fixed rotating roller three is located directly below fixed rotating roller one, and fixed rotating roller four is located directly below fixed rotating roller two; Fixed rotating rod five and fixed rotating rod six are both located between fixed rotating rod one and fixed rotating rod two. Fixed rotating rod five and fixed rotating rod six are at the same height. The height of fixed rotating rod five is between fixed rotating rod one and fixed rotating rod three. The highest point of the outer circle of fixed rotating rod five, the highest point of the outer circle of fixed rotating rod six, and the lowest point of the outer circle of movable rotating rod (202) are aligned. Fixed rotating rod five is close to fixed rotating rod one, and fixed rotating rod six is ​​close to fixed rotating rod two. Fixed rotating rod seven is located directly below fixed rotating rod five, fixed rotating rod eight is located directly below fixed rotating rod six, fixed rotating rod seven and fixed rotating rod eight are at the same height, and the height of fixed rotating rod seven is between fixed rotating rod five and fixed rotating rod three; The beginning of the synchronous belt (203) passes through the movable rotating roller 1, fixed rotating roller 1, fixed rotating roller 3, fixed rotating roller 4, fixed rotating roller 2, movable rotating roller 2, fixed rotating roller 6, fixed rotating roller 8, fixed rotating roller 7 and fixed rotating roller 5 in sequence and then connects to the end of the synchronous belt (203) to form a closed loop.

5. The laser cutting equipment for processing battery boxes according to claim 4, characterized in that, The portion of the timing belt (203) located between fixed roller one and fixed roller three, and the portion of the timing belt (203) located between fixed roller two and fixed roller four, are both named fixed sections. The worktable assembly (200) also includes a limiting component for clamping and restricting the movement of the fixed sections.

6. The laser cutting equipment for processing battery boxes according to claim 5, characterized in that, The limiting component includes two clamping plates (206) located on both sides of the fixed section and a drive module for driving the two clamping plates (206) to move closer to or further away from each other. The clamping plates (206) are slidably connected to the frame (100) and the sliding direction is perpendicular to the surface of the fixed section.

7. The laser cutting equipment for processing battery boxes according to claim 6, characterized in that, The drive module includes a linkage plate (207) that is slidably mounted on the frame (100) in the vertical direction and a drive member (210) for moving the linkage plate (207). The linkage plate (207) is provided with two linkage holes (208) arranged at an angle. The distance between the two linkage holes (208) decreases from bottom to top in the vertical direction. The ends of the clamping plates (206) are provided with linkage pins (209). The linkage pins (209) on the two clamping plates (206) are slidably connected to the two linkage holes (208) respectively.

8. The laser cutting equipment for processing battery boxes according to claim 4, characterized in that, The movable rotating roller (202) is hollow inside and has several heat dissipation holes (2021) arranged in an array along the circumference on its outer surface. One end of the movable rotating roller (202) is connected to a connecting air pipe (2022) via a rotary joint, and a blower is provided at the end of the connecting air pipe (2022).

9. A laser cutting device for processing battery casings according to claim 4, characterized in that, A heat insulation plate (205) is provided between the two column supports (302). The surface of the heat insulation plate (205) is provided with a relief opening for avoiding the laser. The upper surface of the heat insulation plate (205) is flush with the upper surface of the synchronous belt (203) used to support the workpiece.

10. A laser cutting device for processing battery casings according to claim 9, characterized in that, Below the heat insulation plate (205) there is a connecting cover (211). The upper surface of the connecting cover (211) is provided with an inlet located directly below the clearance opening. The side of the connecting cover (211) is provided with an inlet and outlet. An inner drawer (212) is installed inside the connecting cover (211). One side of the inner drawer (212) is located inside the inlet and outlet. Water is stored inside the inner drawer (212). The connecting cover (211) is connected to the movable rotating roller (202).

Images