A hollowing device for a new energy vehicle battery heat sink

Abstract

The present invention discloses a hollowing device for a heat dissipation plate of a battery of a new energy vehicle, relates to the field of hollowing out plates, and solves the problem that the existing hollowing device for heat dissipation plates is prone to bending at the punching locations. The device comprises: an operating table and a top frame, wherein a positioning plate is installed on the inner side of the top frame, a hole punching knife is provided below the positioning plate, a knife seat is installed on the top of the hole punching knife, and a material discharge port is provided on the top of the operating table; the device also comprises: a flattening mechanism for flattening the punching locations of the plates on the operating table, and the flattening mechanism is installed on the outer side of the hole punching knife; the present invention can place the plates on the operating table through the flattening mechanism, punch holes on the surface of the plates by the downward movement of the hole punching knife, and press the punching locations during the movement of the hole punching knife, thereby solving the problem that the punching locations are prone to bending, thereby achieving the effect of automatic flattening and ensuring the hollowing forming quality of the heat dissipation plate.

Description

Technical Field

[0001] The present invention relates to the field of hollowing out plates, and in particular to a hollowing out device for a heat dissipation plate of a battery of a new energy vehicle. Background Art

[0002] New energy vehicle batteries are the core components of the vehicle, mainly including lithium-ion batteries, nickel-metal hydride batteries, fuel cells, lead-acid batteries and supercapacitors. Modern new energy vehicles mainly tend to use lithium-ion batteries and nickel-metal hydride batteries. These two types of batteries not only have high energy density, but also have environmental protection performance, which can fully meet the power needs of new energy vehicles.

[0003] The heat sink is an important component of the heat dissipation system of new energy vehicles. Its function is to evenly distribute the heat generated by the battery pack to the entire heat dissipation system to maintain a stable operating temperature of the battery pack. The heat sink needs to be punched and hollowed out during production. Generally, a hole punching knife is used to punch holes in the plate. The hole punching knife needs to be pushed by a hydraulic telescopic rod so that the hole punching knife contacts the plate and cuts the plate into holes. Due to the thin thickness of the plate, the pressure of the hole punching knife will cause the opening of the plate to bend and extend downward, which is prone to uneven holes, affecting the later installation between the heat sink and the battery casing. Summary of the Invention

[0004] The purpose of the present invention is to provide a hollow device for a new energy vehicle battery heat dissipation plate to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A hollowing device for a battery heat sink of a new energy vehicle comprises: an operating table and a top frame fixedly mounted on the top of the operating table, a positioning plate fixedly mounted on the inner side of the top frame, a hole punching knife provided below the positioning plate, a knife seat fixedly mounted on the top of the hole punching knife, and a discharge port provided on the top of the operating table;

[0007] Also includes:

[0008] A flattening mechanism, used for flattening the punched portion of the plate on the operating table, the flattening mechanism being mounted on the outside of the hole cutter;

[0009] A discharge mechanism, used for discharging waste materials from the inner side of the hole-opening knife, wherein the discharge mechanism is installed between the top frame and the knife seat;

[0010] The plate adjusting mechanism is used to adjust the position of the plate on the operating table, and the plate adjusting mechanism is installed on the outside of the operating table.

[0011] The top of described sliding panel also is provided with an interlocking structure, and the interlocking structure is made up of the two said the interlocking structures. The interlocking structures are characterized in that: said two pieces of interlocking structures are respectively provided with a first gear and a second gear and a second gear and a paddlewheel traverses the interlocking structures.

[0012] Preferably, the discharging mechanism includes a second screw rotatably installed between the positioning plate and the top frame, and a second moving block cooperating with the second screw is provided at the bottom of the top frame, the second moving block is located between the two first moving blocks, the pitch of the second screw is greater than the pitch of the first screw, and two symmetrically distributed mounting rods are fixedly installed on the bottom of the second moving block, both of the mounting rods slide through the positioning plate, and a push block is fixedly installed between the two mounting rods, and a moving hole for limiting the sliding of the push block is provided at the top of the knife seat, and a second gear is fixedly installed on the end of the second screw away from the positioning plate, and the second gear cooperates with the first toothed belt.

[0013] Preferably, the adjusting plate mechanism includes two second toothed belts symmetrically mounted on both sides of the operating table, an installation groove for the second toothed belts to slide within a limited range is provided on the outer side of the operating table, both ends of the operating table are semi-arc structures, two symmetrically distributed adjusting rods are rotatably mounted on the inner side of the operating table, two third gears matching the second toothed belts are fixedly mounted on the outer sides of the adjusting rods, a plurality of push plates distributed in a rectangular array are fixedly mounted on the outer sides of the two second toothed belts, and an adjusting disk is fixedly mounted on both ends of the adjusting rod, and anti-slip grooves are provided on the outer sides of the adjusting disks.

[0014] Preferably, a plurality of support rods distributed in a rectangular array are fixedly installed on the top of the upper pressure frame, and a spring is provided on the outside of the support rod, and the spring is fixedly installed between the upper pressure frame and the bottom of the knife seat.

[0015] Preferably, the support rod slides through the knife seat, a limit frame is provided on the top of the knife seat, and the bottom of the limit frame is fixedly connected to the top end of the support rod.

[0016] Preferably, guide cylinders are slidably mounted on the outer sides of the mounting bracket and the mounting rod, and the guide cylinders are fixedly mounted on the top of the positioning plate.

[0017] Preferably, a discharge cavity is provided inside the operating table, two symmetrically distributed baffles are fixedly installed on the inner side of the discharge cavity, and two symmetrically distributed cleaning ports are provided on the outer side of the operating table.

[0018] Preferably, an elastic mesh plate is fixedly installed on the inner side of the operating table, and the elastic mesh plate has an arc-shaped structure. The elastic mesh plate is located between the two cleaning ports, and two symmetrically distributed discharge troughs are opened on the bottom inner wall of the operating table, and the inner side of the discharge trough has a sloped structure.

[0019] Preferably, a follower rod is rotatably installed on the inner side of the operating table, and the follower rod is located below the elastic mesh plate. Both ends of the follower rod are fixedly installed with driven wheels respectively matched with the two second toothed belts. Two symmetrically distributed cams are fixedly installed on the outer side of the follower rod, and the outer side of the cam is in contact with the bottom of the elastic mesh plate.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The present invention uses a flattening mechanism to place the plate on an operating table, and punches holes on the surface of the plate by moving the hole knife downward. During the movement of the hole knife, the punched area is pressed to solve the problem that the punched area is prone to bending, thereby achieving an automatic flattening effect and ensuring the hollow forming quality of the heat dissipation plate.

[0022] The present invention uses a discharge mechanism to enable the second screw to quickly drive the second moving block to move downward during the downward movement of the hole punching knife. The second moving block drives the push block to move synchronously through the mounting rod, so that the push block can push out the waste inside the hole punching knife and send it into the discharge port of the operating table, which is convenient for the waste to be discharged, thereby achieving the effect of automatically cleaning the waste and facilitating continuous hollowing processing.

[0023] The present invention uses a plate adjusting mechanism to rotate the adjusting disk to make the two second gears rotate and move synchronously, so that the push plate contacts and pushes the plate, making it easy for the plate to move along the top of the operating table, and the plate can be continuously punched, thereby improving the convenience of plate hollowing processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 This is a schematic diagram of the operating table and hole-opening knife structure of the present invention;

[0026] Figure 3 This is a schematic diagram of the positioning plate and top frame structure of the present invention;

[0027] Figure 4 This is a schematic diagram of the structure of the first moving block and the mounting bracket in the present invention;

[0028] Figure 5 Schematic diagram of the upper pressing frame and the lower pressing frame structure of the present invention;

[0029] Figure 6 Schematic diagram of the push block and limit frame structure in the present invention;

[0030] Figure 7 This is a schematic diagram of the push plate and adjustment disk structure of the present invention;

[0031] Figure 8 It is a schematic diagram of the elastic mesh plate and cam structure in the present invention.

[0032] In the figure: 1. operating table; 2. top frame; 3. positioning plate; 4. hole cutter; 5. knife holder; 6. mounting bracket; 7. first moving block; 8. first screw; 9. first gear; 10. positioning frame; 11. first toothed belt; 12. driving motor; 13. upper pressure frame; 14. lower pressure frame; 15. second screw; 16. second moving block; 17. mounting rod; 18. push block; 19. second gear; 20. second toothed belt; 21. adjusting rod; 22. third gear; 23. push plate; 24. adjusting disk; 25. support rod; 26. spring; 27. limit frame; 28. guide cylinder; 29. material blocking plate; 30. elastic mesh plate; 31. driven rod; 32. driven wheel; 33. cam. DETAILED DESCRIPTION

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0034] Example 1: Please refer to Figures 1-8 The figure shows a hollowing device for a new energy vehicle battery heat sink, comprising an operating table 1 and a top frame 2 fixedly mounted on the top of the operating table 1. The top frame 2 is a U-shaped structure. A positioning plate 3 is fixedly mounted on the inner side of the top frame 2. A hole cutter 4 is provided below the positioning plate 3. The hole cutter 4 is a hollow square frame structure, which is convenient for hollowing out the plate. A knife seat 5 is fixedly mounted on the top of the hole cutter 4. A discharge port is provided on the top of the operating table 1, which is convenient for the hole cutter 4 to pass through the plate and insert into the discharge port to discharge the waste material. The device also includes a flattening mechanism for flattening the punched area of the plate on the operating table 1. The flattening mechanism is mounted on the outer side of the hole cutter 4.

[0035] The flattening mechanism includes two mounting brackets 6 that are symmetrically fixedly mounted on the top of the knife seat 5. The mounting bracket 6 slides through the positioning plate 3 so that the mounting bracket 6 can move up and down along the inner side of the positioning plate 3. The mounting bracket 6 is fixedly mounted with a first moving block 7 at one end away from the knife seat 5. Two symmetrically distributed first screws 8 are rotatably mounted between the bottom of the top frame 2 and the positioning plate 3. The two first screws 8 respectively cooperate with the two first moving blocks 7. When the first screw 8 rotates, the mounting bracket 6 can be driven to move up and down through the first moving block 7. The first screw 8 is fixedly mounted with a first gear 9 at one end away from the positioning plate 3. A positioning frame 10 is fixedly mounted on the top of the mounting bracket 6. A first toothed belt 11 is rotatably mounted between the two first gears 9. The first toothed belt 11 is located on the inner side of the positioning frame 10. When any one of the first gears 9 rotates, the other first gear 9 can be driven to rotate synchronously through the first toothed belt 11. A driving motor 12 is fixedly mounted on the top of the positioning frame 10. The output end of the driving motor 12 cooperates with the adjacent first screw 8 , so that the driving motor 12 drives the corresponding first screw 8 to rotate, an upper pressing frame 13 is provided on the outside of the hole knife 4, and a lower pressing frame 14 is fixedly installed on the inside of the discharge port of the operating table 1. The lower pressing frame 14 is located just below the hole knife 4. The size of the inner side of the lower pressing frame 14 is the same as the size of the outer side of the hole knife 4, so that when the hole knife 4 passes through the plate, it can be inserted into the inner side of the lower pressing frame 14, and the upper pressing frame 13 presses the top of the plate, and cooperates with the lower pressing frame 14 to flatten the punching part of the plate. The top of the upper pressing frame 13 is fixedly installed There are multiple support rods 25 distributed in a rectangular array, and a spring 26 is provided on the outside of the support rod 25. The spring 26 is fixedly installed between the upper pressure frame 13 and the bottom of the knife seat 5 to provide a buffer for the movement of the upper pressure frame 13 and prevent the upper pressure frame 13 from exerting too much pressure on the plate. The support rod 25 slides through the knife seat 5 so that the support rod 25 can provide a guide for the movement of the upper pressure frame 13 and prevent the spring 26 from bending. A limit frame 27 is provided on the top of the knife seat 5, and the bottom of the limit frame 27 is fixedly connected to the top of the support rod 25.

[0036] Example 2: Please refer to Figure 2-Figure 6, this embodiment further explains Example 1, the discharging mechanism in the figure includes a second screw 15 rotatably installed between the positioning plate 3 and the top frame 2, and a second moving block 16 cooperating with the second screw 15 is provided at the bottom of the top frame 2, the second moving block 16 is located between the two first moving blocks 7, the pitch of the second screw 15 is greater than the pitch of the first screw 8, and two symmetrically distributed mounting rods 17 are fixedly installed at the bottom of the second moving block 16, and the two mounting rods 17 both slide through the positioning plate 3, so that when the second screw 15 rotates, the two mounting rods 17 can be driven by the second moving block 16 to move up and down along the inner side of the positioning plate 3, and because the pitch of the second screw 15 is greater than the pitch of the first screw 8, the moving speed of the second moving block 16 is greater than the moving speed of the first moving block 7 The moving speed is determined by the sliding movement of the push block 18, and the pushing speed is determined by the sliding movement of the push block 18. The pushing speed is determined by the sliding movement of the push block 18, and the pushing speed is determined by the sliding movement of the push block 18. The pushing speed is determined by the sliding movement of the push block 18, and the pushing speed is determined by the sliding movement of the push block 18, and the pushing speed is determined by the sliding movement of the push block 18, and the pushing speed is determined by the sliding movement of the push block 18, and the pushing speed is determined by the sliding movement of the push block 18, and the pushing speed is determined by the sliding movement of the push block 18, and the pushing speed is determined by the sliding movement of the push block 18, and the pushing speed is determined by the sliding movement of the push block 18, and the pushing speed is determined by the sliding movement of the push block 18, and the pushing speed is determined by the sliding movement of the push block 18, and the pushing speed is determined by the sliding movement of the push block 18, and the pushing speed is determined by the sliding movement of the push block 18, and the

[0037] Example 3: Please refer to Figure 2 、 Figure 7 and Figure 8 , this embodiment is further explained for other embodiments. The plate adjustment mechanism in the figure includes two second toothed belts 20 symmetrically mounted on both sides of the operating table 1. The outer side of the operating table 1 is provided with a mounting groove for the second toothed belt 20 to limit the sliding, which is convenient for receiving the second toothed belt 20 into the mounting groove of the operating table 1, so that the plate can move along the top of the operating table 1. Both ends of the operating table 1 are semi-arc structures. Two symmetrically distributed adjusting rods 21 are rotatably mounted on the inner side of the operating table 1. Two third gears 22 that cooperate with the second toothed belt 20 are fixedly mounted on the outer side of the adjusting rod 21. Rotating any When one adjusting rod 21 rotates, it can drive the two second toothed belts 20 to rotate synchronously through the two corresponding third gears 22, and drive the other third gear 22 to move synchronously. The outer sides of the two second toothed belts 20 are fixedly installed with multiple push plates 23 distributed in a rectangular array, so that the push plates 23 can resist the outer side of the plate. When the second toothed belt 20 moves, the plate can be pushed to move by the push plates 23 to achieve continuous hollowing processing of the plate. Adjustment disks 24 are fixedly installed at both ends of the adjusting rod 21. The outer side of the adjusting disk 24 is provided with anti-slip grooves to facilitate the rotation of the adjusting disk 24.

[0038] Example 4: Please refer to Figure 2 and Figure 8 , this embodiment further illustrates other embodiments. The operating table 1 in the figure is provided with a discharge cavity inside for storing waste produced by hollowing out the plate. Two symmetrically distributed baffle plates 29 are fixedly installed on the inside of the discharge cavity. Two symmetrically distributed cleaning ports are provided on the outside of the operating table 1 to facilitate the staff to take out the waste. An elastic mesh plate 30 is fixedly installed on the inside of the operating table 1. The elastic mesh plate 30 has an arc-shaped structure. The elastic mesh plate 30 is located directly below the discharge port of the operating table 1, so that the waste can fall on the elastic mesh plate 30. The arc surface of the elastic mesh plate 30 is used to enable the waste to slide into the cleaning port. The elastic mesh plate 30 is located between the two cleaning ports, and the bottom inner wall of the operating table 1 is opened. There are two symmetrically distributed discharge troughs, the inner side of the discharge trough is an inclined structure, which is convenient for waste to slide out. A driven rod 31 is rotatably installed on the inner side of the operating table 1. The driven rod 31 is located below the elastic mesh plate 30. Both ends of the driven rod 31 are fixedly installed with driven wheels 32 that respectively cooperate with the two second toothed belts 20, so that the second toothed belts 20 can drive the driven wheels 32 to rotate, and the driven wheels 32 can drive the driven rod 31 to rotate. Two symmetrically distributed cams 33 are fixedly installed on the outer side of the driven rod 31. The outer side of the cam 33 is in contact with the bottom of the elastic mesh plate 30, so that when the driven rod 31 drives the cam 33 to rotate, it can repeatedly knock on the bottom of the elastic mesh plate 30, which is convenient for waste to be discharged quickly.

[0039] Working principle: First, the staff places the plate on the operating table 1 and rotates the adjusting disk 24, so that the adjusting disk 24 drives the corresponding adjusting rod 21 to rotate, and the adjusting rod 21 drives the corresponding two third gears 22 to rotate synchronously, so that the third gear 22 cooperates with the two third gears 22 on the other adjusting rod 21 to drive the second toothed belt 20 to rotate along the installation groove on the operating table 1. The two second toothed belts 20 drive the push plate 23 to move. The push plate 23 contacts the outside of the plate and pushes the plate to the bottom of the hole knife 4. The staff can move the plate according to the position of the hollowing process. Move to the corresponding position. At this time, the staff starts the driving motor 12, so that the driving motor 12 drives the corresponding first screw 8 to rotate. The first screw 8 drives the first toothed belt 11 to rotate and move through the first gear 9 at its end, so that the first toothed belt 11 drives the other first gear 9 and the second gear 19 to rotate synchronously, so that the synchronous rotation of the two first screws 8 can be achieved, and the second gear 19 drives the second screw 15 to rotate. Among them, the first screw 8 drives the mounting bracket 6 to move along the inner side of the positioning plate 3 through the first moving block 7, and the two mounting brackets 6 push the knife holder 5 to move downward, so that the knife holder 5 drives the opening The knife 4 contacts the top of the plate to realize the hollowing processing of the plate. At the same time, the second screw 15 drives the two mounting rods 17 to move along the inner side of the positioning plate 3 through the second moving block 16. The mounting rod 17 pushes the push block 18 to move downward. At this time, the hole knife 4 passes through the plate and is inserted into the lower pressing frame 14. The waste hollowed out of the plate enters the hole knife 4. The push block 18 contacts the waste during the downward movement, and the waste is ejected from the inner side of the hole knife 4 and pushed into the discharge cavity of the operating table 1, falling above the elastic mesh plate 30. Using the curved surface of the elastic mesh plate 30, the waste can slide into the discharge trough. As the hole is opened, the waste is discharged. As the knife 4 moves, the upper pressing frame 13 on the outside of the hole-punching knife 4 contacts the top of the plate. The cooperation between the upper pressing frame 13 and the lower pressing frame 14 is used to flatten the punched portion of the plate to solve the problem of bending at the punched portion of the plate. The upper pressing frame 13 drives the support rod 25 to move along the inner side of the knife seat 5. The elasticity of the spring 26 is used to provide a buffer for the upper pressing frame 13 to prevent excessive pressure on the plate. Finally, the driving motor 12 drives the corresponding first screw 8 to rotate in the opposite direction to retract the hole-punching knife 4. A single punching can be completed and the waste can be automatically discharged, thereby achieving the effect of automatic flattening and waste disposal.

[0040] After a single hole is punched, the staff turns the adjusting disk 24 again, so that the push plate 23 pushes the plate to move along the top of the operating table 1, so that the next punching point of the plate moves to the bottom of the hole knife 4. At the same time, the second toothed belt 20 drives the third gear 22 to rotate, and the third gear 22 drives the driven rod 31 to rotate. The driven rod 31 drives the two cams 33 to rotate synchronously, so that the cam 33 repeatedly hits the bottom of the elastic mesh plate 30, and the waste on the elastic mesh plate 30 can be bounced into the discharge trough to prevent the waste from accumulating and improve the convenience of waste disposal. Therefore, the staff can start the drive motor 12 again to punch the plate again, and cooperate with the operation of the adjusting disk 24 to complete the hollowing processing of the plate, thereby achieving the effect of improving the convenience of hollowing processing.

[0041] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0042] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A hollowing device for a new energy vehicle battery heat sink, characterized in that: include: The operating table and the top frame are provided with a positioning plate on the inner side of the top frame, a hole-opening knife is provided below the positioning plate, a knife seat is provided on the top of the hole-opening knife, and a material discharge port is provided on the top of the operating table; Also includes: A flattening mechanism is used to flatten the punched holes of the plate on the operating table. The flattening mechanism is installed on the outside of the hole-punching knife. The flattening mechanism includes two mounting brackets mounted on the top of the knife seat. The mounting brackets slide through the positioning plate. A first moving block is fixedly mounted on one end of the mounting bracket. Two first screws are rotatably installed between the bottom of the top frame and the positioning plate. The two first screws are respectively matched with the two first moving blocks. An upper pressing frame is provided on the outside of the hole-punching knife, and a lower pressing frame is fixedly mounted on the inner side of the discharge port of the operating table. The discharge mechanism is used to discharge the waste material inside the hole-opening knife. The discharge mechanism is installed between the top frame and the knife seat. The discharge mechanism includes a second screw rotatably installed between the positioning plate and the top frame. The bottom of the top frame is provided with a second moving block that cooperates with the second screw. The pitch of the second screw is greater than the pitch of the first screw. Two mounting rods are fixedly installed on the bottom of the second moving block. Both mounting rods slide through the positioning plate. A push block is installed between the two mounting rods. A moving hole for the push block to limit the sliding is opened on the top of the knife seat. The plate adjusting mechanism is used to adjust the position of the plate on the operating table. The plate adjusting mechanism is installed on the outside of the operating table. The plate adjusting mechanism includes two second toothed belts rotatably installed on both sides of the operating table. Two adjusting rods are rotatably installed on the inner side of the operating table. Two third gears that cooperate with the second toothed belts are fixedly installed on the outside of the adjusting rod. Multiple push plates are fixedly installed on the outsides of the two second toothed belts. Adjusting disks are fixedly installed on both ends of the adjusting rod. The second gear is fixedly installed on one end of the second screw. An elastic mesh plate is fixedly installed on the inside of the operating table. The elastic mesh plate has an arc-shaped structure. A driven rod is installed on the inside of the operating table. Driven wheels that respectively cooperate with the two second toothed belts are installed on both ends of the driven rod. Two cams are fixedly installed on the outside of the driven rod.

2. A hollowing device for a new energy vehicle battery heat dissipation plate according to claim 1, characterized in that: The flattening mechanism also includes a first gear installed at one end of the first screw, a positioning frame is installed on the top of the mounting bracket, a first toothed belt is rotatably installed between the two first gears, and the second gear cooperates with the first toothed belt.

3. The hollowing device for a new energy vehicle battery heat dissipation plate according to claim 1, characterized in that: A plurality of support rods are fixedly installed on the top of the upper pressing frame, and springs are arranged on the outer sides of the support rods.

4. The hollowing device for a new energy vehicle battery heat dissipation plate according to claim 1, characterized in that: A limiting frame is provided on the top of the knife seat, and the bottom of the limiting frame is fixedly connected to the top end of the support rod.

5. The hollowing device for a new energy vehicle battery heat dissipation plate according to claim 1, characterized in that: The outer sides of the mounting bracket and the mounting rod are both slidably mounted with guide cylinders, which are mounted on the top of the positioning plate.

6. The hollowing device for a new energy vehicle battery heat dissipation plate according to claim 3, characterized in that: A discharge cavity is provided inside the operating table, and two baffle plates are fixedly installed on the inner side of the discharge cavity.

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