Automatic packaging device for silicon carbide powder

Abstract

The invention discloses an automatic silicon carbide powder packaging device, and belongs to the technical field of packaging. The automatic silicon carbide powder packaging device is provided with a rotating disc, material receiving barrels are symmetrically arranged in the rotating disc, a weighing structure is arranged below one side of each material receiving barrel, a silicon carbide discharging structure is further arranged above each material receiving barrel, and a middle pipeline is arranged below the other side of each material receiving barrel; a packaging bag opening clamping structure and a heating packaging structure are arranged below the middle pipeline, an automatic packaging bag feeding structure is further arranged on one side of the lower portion of the middle pipeline, automatic silicon carbide packaging bag feeding, clamping during bag opening discharging and hot packaging after discharging can be automatically completed, silicon carbide weighing and silicon carbide packaging can be separated from each other, and the packaging efficiency is improved. And the packaging time is saved, and the production efficiency and the production continuity during silicon carbide packaging are improved.

Description

Technical Field

[0001] The invention relates to an automatic packaging device for silicon carbide powder, belonging to the technical field of packaging. Background Art

[0002] Silicon carbide, also known as corundum, is made of quartz sand, petroleum coke (or coal coke), sawdust (salt is needed to produce green silicon carbide) and other raw materials through high-temperature smelting in a resistance furnace. Silicon carbide is also a rare mineral in nature. Silicon carbide is also called carbon silicon stone. Among contemporary non-oxide high-tech refractory raw materials such as C, N, and B, silicon carbide is the most widely used and most economical one. It can be called corundum or refractory sand.

[0003] When packaging silicon carbide powder, the existing packaging device generally has the operator insert the packaging bag into the silicon carbide powder feeding port, and then operate the clamping device to clamp the bag mouth, and the silicon carbide powder falls into the packaging bag from the feeding port. Sometimes, in order to accurately weigh the weight of silicon carbide in the packaging bag, the material dropping speed has to be reduced to avoid the influence on the weighing system during material dropping, which restricts the continuity of silicon carbide packaging and reduces the efficiency of silicon carbide packaging. For this reason, those skilled in the art have proposed an automatic packaging device for silicon carbide powder to solve the problems raised in the above background technology. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide an automatic packaging device for silicon carbide powder in view of the above shortcomings. The present invention can automatically transport the packaging bags to the silicon carbide packaging unloading port, and at the same time isolate the weighing of silicon carbide powder from the packaging unloading, so that they can work independently without interfering with each other, thereby improving the continuity of silicon carbide powder packaging and enhancing the production efficiency of silicon carbide powder packaging.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions: A silicon carbide powder automatic packaging device comprises a turntable with through holes symmetrically distributed in the turntable, a material receiving barrel in the through holes, a material dropping structure above the through holes on one side of the turntable, a weighing structure below the through holes, a workbench below the turntable, an intermediate pipe inside the workbench, the intermediate pipe runs through the workbench, the intermediate pipe is in a trumpet shape, a support plate is fixedly connected to the lower surface of the workbench, a clamping assembly and a welding assembly are provided directly below the intermediate pipe, the clamping assembly and the welding assembly are fixedly connected to the surface of the support plate, an automatic feeding structure for packaging bags is provided on one side directly below the intermediate pipe, and a belt conveyor is provided below the intermediate pipe.

[0006] A silicon carbide powder automatic packaging device comprises a turntable with through holes symmetrically distributed in the turntable, a material receiving barrel in the through holes, a material dropping structure above the through holes on one side of the turntable, a weighing structure below the through holes, a workbench below the turntable, an intermediate pipe inside the workbench, the intermediate pipe runs through the workbench, the intermediate pipe is in a trumpet shape, a support plate is fixedly connected to the lower surface of the workbench, a clamping assembly and a welding assembly are provided directly below the intermediate pipe, the clamping assembly and the welding assembly are fixedly connected to the surface of the support plate, an automatic feeding structure for packaging bags is provided on one side directly below the intermediate pipe, and a belt conveyor is provided below the intermediate pipe.

[0007] Furthermore, the receiving barrel is thick at the top and thin at the bottom, and a barrel valve is also provided at the barrel mouth below the receiving barrel. A rotating motor is fixedly connected to the upper surface of the workbench, and the center of the turntable is fixedly connected to the end of the driving shaft of the rotating motor.

[0008] Furthermore, the blanking structure includes a powder bin, a feeding motor is provided on the upper surface of the powder bin, a spiral blade is connected below the feeding motor, the spiral blade is located in the powder bin, and a blanking valve is provided at the blanking port of the powder bin.

[0009] Furthermore, the weighing structure includes a lifting cylinder, a lower clamping plate is fixedly connected to the upper end of the lifting cylinder, an upper clamping plate is arranged above the lower clamping plate, and a weighing sensor is arranged between the two.

[0010] Furthermore, the automatic feeding structure for packaging bags includes an intermediate platform, which stands on one side directly below the intermediate pipe. A rotating cylinder and a driving disk are provided on the surface of the intermediate platform. The rotating cylinder and the driving disk are arranged opposite to each other. The rotating cylinder is hollow and a cylinder is provided in the hollow.

[0011] Furthermore, a lower rotating shaft is provided below the rotating cylinder and the driving disk, a vertical plate is fixedly connected to the surface of the lower rotating shaft, an upper rotating shaft is provided on the upper surface of the vertical plate, a support rod and one end of a cylinder are provided on the surface of the upper rotating shaft, an adsorption plate is fixedly connected to the end of the support rod, suction cups are evenly arranged on the surface of the adsorption plate, the suction cups are also connected to a first pipe, the first pipe has a negative pressure, a suction cup valve is provided on the first pipe, and a middle rotating shaft is provided on the middle surface of the vertical plate.

[0012] Furthermore, a driving rotating shaft is provided on one side of the driving disk surface, and the driving rotating shaft and the middle rotating shaft are connected by a connecting rod. A stepper motor is also fixedly connected to the other side surface of the middle platform of the driving disk, and the stepper motor driving shaft passes through the middle platform. The center of the driving disk is fixedly connected to the end of the stepper motor driving shaft.

[0013] Furthermore, the automatic feeding structure for packaging bags also includes a material conveyor belt, an attachment plate is provided at the end of the material conveyor belt, the attachment plate is fixedly connected to the surface of the middle platform, the attachment plate is hollow, a second pipe is connected to the hollow part, the second pipe is under negative pressure, an adsorption valve is provided on the second pipe, a filter net is provided on the surface of the attachment plate, and a photoelectric switch is provided on the surface of the filter net.

[0014] Furthermore, the clamping assembly includes a clamping plate, which is fixed to the surface of the supporting plate through a cross bar. A clamping arm is provided on the upper surface of the clamping plate. One end of the clamping arm extends out of the surface of the clamping plate. A semicircular recess is provided at the extended end of the clamping arm. The clamping arm is in a corner shape. A third rotating axis is provided on the clamping arm. A clamping gear is fixed to the other end of the clamping arm. The clamping gear is located on the surface of the clamping plate. A first rotating axis is connected between the two. The clamping gear is a semicircular gear that meshes with each other through teeth. A clamping motor is also fixedly installed on the back of the clamping plate.

[0015] Furthermore, a second rotating shaft is provided on the surface of the clamping plate, and the second rotating shaft and the third rotating shaft are connected via a connecting rod.

[0016] The present invention adopts the above technical solution, and has the following technical effects compared with the prior art: 1. The present invention is provided with a turntable, in which a receiving barrel is symmetrically arranged, a silicon carbide weighing structure is arranged below one side of the receiving barrel, a silicon carbide unloading structure is arranged above, and an intermediate pipe is arranged below the other side. When the silicon carbide is unloaded and weighed in the receiving barrel on one side, the silicon carbide in the receiving barrel on the other side falls into the packaging bag through the intermediate pipe, thereby separating the silicon carbide weighing from the silicon carbide packaging, saving packaging time and improving the production efficiency of silicon carbide packaging.

[0017] 2. The present invention is provided with a bag mouth clamping structure and a heating packaging structure below the middle pipe, and an automatic feeding structure for the bag is also provided on one side below the middle pipe, which can automatically complete the automatic feeding of the silicon carbide packaging bag, the clamping of the bag mouth during unloading, and the heat packaging after unloading, thereby improving the production continuity during silicon carbide packaging. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the specific embodiments or the description of the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual scale and orientation.

[0019] Figure 1 It is a schematic diagram of the structural connection of the present invention; Figure 2 This is a schematic diagram of the connection structure of the clamping assembly of the present invention; Figure 3 It is a schematic diagram of the structural connection of the welding assembly of the present invention.

[0020] In the figure: 1-powder bin, 2-feeding motor, 3-suction cup valve, 4-workbench, 5-unloading valve, 6-turntable, 7-receiving barrel, 8-barrel valve, 9-cylinder, 10-support plate, 11-rotating motor, 12-lifting cylinder, 13-lower clamping plate, 14-upper clamping plate, 15-weighing sensor, 16-belt conveyor belt, 17-middle pipeline, 18-clamping assembly, 19-welding assembly, 20-bag conveyor belt, 21-attachment plate, 22-photoelectric switch, 23-middle table, 24-vertical plate, 25-driving rotating shaft, 26- Upper rotating shaft, 27-middle rotating shaft, 28-lower rotating shaft, 29-support rod, 30-adsorption plate, 31-driving disk, 32-rotating cylinder, 33-clamping plate, 34-first rotating shaft, 35-second rotating shaft, 36-third rotating shaft, 37-clamping arm, 38-clamping gear, 39-clamping motor, 40-fourth rotating shaft, 41-fifth rotating shaft, 42-sixth rotating shaft, 43-welding arm, 44-welding gear, 45-welding motor, 46-fuser, 47-welding plate, 48-adsorption valve, 49-stepping motor. DETAILED DESCRIPTION

[0021] like Figure 1 and Figure 2 As shown, an automatic packaging device for silicon carbide powder includes a turntable 6, with through holes symmetrically distributed in the turntable 6, a material receiving barrel 7 is arranged in the through hole, the material receiving barrel 7 is coarse at the top and thin at the bottom, and a barrel valve 8 is also arranged at the bottom of the barrel mouth of the material receiving barrel 7, a material dropping structure is arranged above the through hole on one side of the turntable 6, and a weighing structure is arranged below, and a workbench 4 is also arranged below the turntable 6, a rotating motor 11 is fixedly connected to the upper surface of the workbench 4, the center of the turntable 6 is fixedly connected to the end of the driving shaft of the rotating motor 11, and the rotating motor 11 is used for rotating the turntable 6 and the material receiving barrel 7.

[0022] The material dropping structure comprises a powder bin 1 , a feeding motor 2 is arranged on the upper surface of the powder bin 1 , a spiral blade is connected below the feeding motor 2 , the spiral blade is located in the powder bin 1 , and a material dropping valve 5 is arranged at the material dropping opening of the powder bin 1 .

[0023] The weighing structure includes a lifting cylinder 12, a lower clamping plate 13 is fixedly connected to the upper end of the lifting cylinder 12, an upper clamping plate 14 is provided above the lower clamping plate 13, and a weighing sensor 15 is provided between the two. When the feeding motor 2 starts to rotate, the unloading valve 5 opens, the lifting cylinder 12 extends upward, and the receiving barrel 7 on one side of the turntable 6 is lifted. Driven by the spiral blades, the silicon carbide powder in the powder bin 1 falls into the receiving barrel 7 through the unloading valve 5. After the weighing sensor 15 detects that the weight of the silicon carbide powder in the receiving barrel 7 reaches the set value, the unloading valve 5 and the feeding motor 2 are closed, the lifting cylinder 12 retracts, and the receiving barrel 7 is lowered back into the turntable 6.

[0024] An intermediate pipe 17 is also provided in the workbench 4. The intermediate pipe 17 runs through the workbench 4 and is in a trumpet shape. A support plate 10 is fixedly connected to the lower surface of the workbench 4. A clamping assembly 18 and a welding assembly 19 are also provided directly below the intermediate pipe 17. The clamping assembly 18 and the welding assembly 19 are fixedly connected to the surface of the support plate 10. An automatic feeding structure for packaging bags is also provided on one side directly below the intermediate pipe 17.

[0025] The automatic feeding structure for packaging bags includes an intermediate platform 23, which stands on one side directly below the intermediate pipe 17. A rotating cylinder 32 and a driving disk 31 are provided on the surface of the intermediate platform 23. The rotating cylinder 32 and the driving disk 31 are arranged opposite to each other, and both can rotate on the surface of the intermediate platform 23. The rotating cylinder 32 is hollow, and a cylinder 9 is provided in the hollow.

[0026] A lower rotating shaft 28 is also provided below the rotating cylinder 32 and the driving disk 31, and a vertical plate 24 is fixedly connected to the surface of the lower rotating shaft 28, and an upper rotating shaft 26 is provided on the upper surface of the vertical plate 24. A support rod 29 and one end of a cylinder 9 are also provided on the surface of the upper rotating shaft 26, and an adsorption plate 30 is fixedly connected to the end of the support rod 29. Suction cups are evenly arranged on the surface of the adsorption plate 30, and the suction cups are also connected to a first pipeline. Negative pressure is inside the first pipeline, and a suction cup valve 3 is provided on the first pipeline. A middle rotating shaft 27 is provided on the middle surface of the vertical plate 24.

[0027] A driving rotating shaft 25 is also provided on one side of the surface of the driving disk 31, and the driving rotating shaft 25 and the middle rotating shaft 27 are connected by a connecting rod. A stepper motor 49 is also fixedly connected to the surface of the other side of the middle table 23 relative to the driving disk 31. The driving shaft of the stepper motor 49 passes through the middle table 23, and the center of the driving disk 31 is fixedly connected to the end of the driving shaft of the stepper motor 49.

[0028] The automatic feeding structure for packaging bags also includes a bag conveyor belt 20, at the end of which is an attachment plate 21, which is fixed to the surface of the intermediate platform 23, and the attachment plate 21 is hollow, and a second pipe is connected to the hollow part, and the second pipe is under negative pressure, and an adsorption valve 48 is provided on the second pipe. A filter screen is provided on the surface of the attachment plate 21, and a photoelectric switch 22 is provided on the surface of the filter screen. Normally, the adsorption plate 30 is located above the surface of the attachment plate 21, the rotating cylinder 32 and the cylinder 9 are in a vertical state, and the vertical plate 24 is inclined toward the rotating cylinder 32 side.

[0029] The opening of the packaging bag is transported to the surface of the attachment plate 21 via the material bag conveyor belt 20. The photoelectric switch 22 detects that there is a packaging bag on the surface of the attachment plate 21, the material bag conveyor belt 20 stops, the suction cup valve 3 and the adsorption valve 48 are opened, and the upper and lower surfaces of the bag opening of the packaging bag are adsorbed between the suction cup and the attachment plate 21. Then, the stepper motor 49 starts to rotate, driving the driving disk 31 to rotate 180 degrees, and rotating the driving rotating shaft 25 from the leftmost side of the driving disk 31 to the rightmost side. During this process, the connection between the driving rotating shaft 25 and the middle rotating shaft 27 is firstly connected. The rod drives the vertical plate 24 to swing toward the middle pipe 17 side with the lower rotating shaft 28 as the center. The swing of the vertical plate 24 drives the rotating cylinder 32 and the cylinder 9 to rotate counterclockwise on the surface of the middle platform 23. The cylinder 9 rotates counterclockwise, driving the upper rotating shaft 26 and the supporting rod 29 to rotate counterclockwise on the surface of the vertical plate 24, thereby bringing the packaging bag on the surface of the attachment plate 21 away from the surface of the attachment plate 21 through the suction cup on the surface of the adsorption plate 30. When the packaging bag is about to leave the surface of the attachment plate 21, the bag mouth is propped open due to the adsorption of the lower surface of the attachment plate 21.

[0030] When the driving rotating shaft 25 rotates to the rightmost side of the driving disk 31, at this time, the cylinder 9 and the rotating cylinder 32 are placed horizontally, the adsorption plate 30 and the vertical plate 24 are in a vertical state, the packaging bag on the surface of the suction cup is located directly below the middle pipe 17, and the lower end of the middle pipe 17 extends into the packaging bag. At this moment, the adsorption plate 30 is exactly located between the clamping assembly 18 and the welding assembly 19.

[0031] The clamping assembly 18 includes a clamping plate 33, which is fixed to the surface of the support plate 10 through a cross bar. A clamping arm 37 is relatively provided on the upper surface of the clamping plate 33. Due to the same structure and function, only one clamping arm 37 is used as an example below. One end of the clamping arm 37 extends out of the clamping plate 33, and a semicircular recess is provided at the protruding end of the clamping arm 37. The clamping arm 37 is in a corner shape. A third rotating shaft 36 is provided on the clamping arm 37. A clamping gear 38 is fixedly connected to the other end of the clamping arm 37. The clamping gear 38 is located on the surface of the clamping plate 33, and a first rotating shaft 34 is connected therebetween. The clamping gear 38 is a semicircular gear, which is meshed with each other through teeth. A clamping motor 39 is also fixedly installed on the back of the clamping plate 33, wherein a first rotating shaft 34 is fixedly installed at the end of a driving shaft of the clamping motor 39, and the clamping motor 39 is used to rotate the first rotating shaft 34 and the clamping gear 38.

[0032] The surface of the clamping plate 33 is also provided with a second rotating shaft 35, and the second rotating shaft 35 and the third rotating shaft 36 are connected by a connecting rod. When the intermediate pipe 17 extends into the packaging bag, the clamping motor 39 starts to rotate, the clamping gear 38 rotates, and the clamping arms 37 gather together to clamp the bag mouth tightly on the surface of the intermediate pipe 17. The suction cup valve 3 and the adsorption valve 48 are closed, and then the stepping motor 49 starts to rotate 180 degrees, rotating the driving rotating shaft 25 located on the far right of the driving disk 31 to the far left to retract. During this process, first, by driving the connecting rod between the rotating shaft 25 and the middle rotating shaft 27, the vertical plate 24 is driven to swing toward the side away from the middle pipe 17 with the lower rotating shaft 28 as the center. The swing of the vertical plate 24 drives the rotating cylinder 32 and the cylinder 9 to rotate clockwise on the surface of the middle platform 23. The cylinder 9 rotates clockwise, driving the upper rotating shaft 26 and the support rod 29 to rotate clockwise on the surface of the vertical plate 24, thereby rotating the suction cup on the surface of the adsorption plate 30 to the surface of the attachment plate 21 again, and repeating the process of loading the packaging bag.

[0033] When the suction cup on the surface of the adsorption plate 30 is reset, the turntable 6 rotates 180 degrees, and the receiving barrel 7 on one side containing silicon carbide is rotated to above the middle pipe 17. The barrel valve 8 opens, and the powdered silicon carbide falls into the packaging bag through the middle pipe 17. At the same time, the empty receiving barrel 7 on the other side is rotated to below the powder bin 1 to load the powdered silicon carbide.

[0034] like Figure 1 and Figure 3 As shown, the welding assembly 19 includes a fourth rotating shaft 40, a fifth rotating shaft 41, a sixth rotating shaft 42, a welding arm 43, a welding gear 44, a welding motor 45 and a welding plate 47. The structure and working process of the welding assembly 19 are the same as those of the clamping assembly 18. A heat melter 46 is fixedly connected to the relative surface at the end of the welding arm 43. When the packaging bag is filled with silicon carbide, the barrel valve 8 is closed, the welding motor 45 starts to rotate, and the heat melter 46 moves to adhere to the bag opening of the packaging bag, heats and seals the bag opening of the packaging bag, and then the welding motor 45 rotates in the opposite direction, and the heat melter 46 leaves the bag opening surface of the packaging bag.

[0035] A belt conveyor 16 is also provided below the intermediate pipe 17. When the hot melter 46 leaves the surface of the bag mouth, the clamping motor 39 rotates in the opposite direction, the clamping arm 37 releases the bag, and the bag containing silicon carbide falls onto the surface of the belt conveyor 16 and is transported to another place. Then, the next bag is blanked and heat-sealed again, and this process is repeated.

[0036] The description of the present invention is given for the purpose of illustration and description, and is not intended to be exhaustive or to limit the invention to the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the invention and to enable those of ordinary skill in the art to understand the invention and design various embodiments with various modifications suitable for specific uses.

Claims

1. An automatic packaging device for silicon carbide powder, characterized in that: The invention comprises a turntable (6), wherein through holes are symmetrically distributed in the turntable (6), and a material receiving barrel (7) is arranged in the through holes. A material dropping structure is arranged above the through holes on one side of the turntable (6), and a weighing structure is arranged below the through holes. A workbench (4) is also arranged below the turntable (6), and an intermediate pipe (17) is also arranged in the workbench (4). The intermediate pipe (17) runs through the workbench (4), and the intermediate pipe (17) is in a trumpet shape. A support plate (10) is also fixedly connected to the lower surface of the workbench (4), and a clamping assembly (18) and a welding assembly (19) are also arranged directly below the intermediate pipe (17). The clamping assembly (18) and the welding assembly (19) are fixedly connected to the surface of the support plate (10). An automatic feeding structure for packaging bags is also arranged on one side directly below the intermediate pipe (17), and a belt conveyor (16) is also arranged below the intermediate pipe (17).

2. The automatic packaging device for silicon carbide powder according to claim 1, characterized in that: The receiving barrel (7) is thick at the top and thin at the bottom, and a barrel valve (8) is provided at the bottom of the barrel opening of the receiving barrel (7). A rotating motor (11) is fixedly connected to the upper surface of the workbench (4), and the center of the rotating disk (6) is fixedly connected to the end of the driving shaft of the rotating motor (11).

3. The automatic packaging device for silicon carbide powder according to claim 1, characterized in that: The material dropping structure comprises a powder bin (1), a feeding motor (2) is provided on the upper surface of the powder bin (1), a spiral blade is connected below the feeding motor (2), the spiral blade is located in the powder bin (1), and a material dropping valve (5) is provided at the material dropping opening of the powder bin (1).

4. The automatic packaging device for silicon carbide powder according to claim 1, characterized in that: The weighing structure comprises a lifting cylinder (12), the upper end of which is fixedly connected to a lower clamping plate (13), an upper clamping plate (14) is provided above the lower clamping plate (13), and a weighing sensor (15) is provided between the two.

5. The automatic packaging device for silicon carbide powder according to claim 1, characterized in that: The automatic packaging bag feeding structure comprises an intermediate platform (23), the intermediate platform (23) being erected on one side directly below the intermediate pipe (17), a rotating cylinder (32) and a driving disk (31) being provided on the surface of the intermediate platform (23), the rotating cylinder (32) and the driving disk (31) being arranged opposite to each other, the rotating cylinder (32) being hollow, and a cylinder (9) being provided in the hollow.

6. The automatic packaging device for silicon carbide powder according to claim 5, characterized in that: A lower rotating shaft (28) is further provided below the rotating cylinder (32) and the driving disk (31); a vertical plate (24) is fixedly connected to the surface of the lower rotating shaft (28); an upper rotating shaft (26) is provided on the upper surface of the vertical plate (24); a support rod (29) and one end of a cylinder (9) are further provided on the surface of the upper rotating shaft (26); an adsorption plate (30) is fixedly connected to the end of the support rod (29); suction cups are evenly arranged on the surface of the adsorption plate (30); the suction cups are further connected to a first pipeline; negative pressure is maintained in the first pipeline; a suction cup valve (3) is provided on the first pipeline; and a middle rotating shaft (27) is provided on the middle surface of the vertical plate (24).

7. The automatic packaging device for silicon carbide powder according to claim 5, characterized in that: A driving rotating shaft (25) is also provided on one side of the surface of the driving disk (31), and the driving rotating shaft (25) and the middle rotating shaft (27) are connected via a connecting rod. A stepping motor (49) is also fixedly connected to the surface of the other side of the intermediate platform (23) relative to the driving disk (31), and the driving shaft of the stepping motor (49) passes through the intermediate platform (23), and the center of the driving disk (31) is fixedly connected to the end of the driving shaft of the stepping motor (49).

8. The automatic packaging device for silicon carbide powder according to claim 1, characterized in that: The packaging bag automatic feeding structure further comprises a material bag conveyor belt (20), an attachment plate (21) being provided at the end of the material bag conveyor belt (20), the attachment plate (21) being fixedly connected to the surface of the intermediate platform (23), the attachment plate (21) being hollow inside, a second pipe being connected to the hollow part, the second pipe being under negative pressure, an adsorption valve (48) being provided on the second pipe, a filter screen being provided on the surface of the filter screen, and a photoelectric switch (22) being provided on the surface of the filter screen.

9. The automatic packaging device for silicon carbide powder according to claim 1, characterized in that: The clamping assembly (18) comprises a clamping plate (33), the clamping plate (33) being fixedly connected to the surface of the support plate (10) via a cross bar, a clamping arm (37) being arranged on the upper surface of the clamping plate (33), one end of the clamping arm (37) extending out of the clamping plate (33), a semicircular recess being arranged at the extended end of the clamping arm (37), the clamping arm (37) being in a corner shape, a third rotating shaft (36) being arranged on the clamping arm (37), a clamping gear (38) being fixedly connected to the other end of the clamping arm (37), the clamping gear (38) being located on the surface of the clamping plate (33), a first rotating shaft (34) being connected therebetween, the clamping gear (38) being a semicircular gear, meshing with each other via teeth, and a clamping motor (39) being fixedly mounted on the back of the clamping plate (33).

10. The automatic packaging device for silicon carbide powder according to claim 9, characterized in that: A second rotating shaft (35) is also provided on the surface of the clamping plate (33), and the second rotating shaft (35) and the third rotating shaft (36) are connected via a connecting rod.

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