Mortar feeding device for mortar pump

Abstract

The utility model relates to the technical field of building construction, in particular to a mortar feeding device for a mortar pump, which can screen out large-particle impurities in mortar raw materials in advance, prevents the large-particle solid impurities from blocking the mortar pump or influencing the use of mortar, and is high in reliability and practicability. Comprising a bottom plate, a support and a box body, the box body is fixedly installed at the upper end of the bottom plate through the support, a cavity is formed in the box body, and an opening is formed in the upper end of the box body; the device further comprises a screening mechanism which is installed on the box body and has a screening function.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction, in particular to a mortar feeding device for a mortar pump. Background Art

[0002] A mortar pump is a device for transporting mortar, which has wide applications in construction projects. A mortar feeding device is a device for supplying mortar to a mortar pump. In the prior art, the utility model patent with the patent application number 201921058947.2 discloses a mortar feeding device for a mortar pump, which mainly consists of a storage tank, a motor and stirring fan blades. When in use, a certain proportion of sand, lime, water and some additives are added into the storage tank, and then the stirring fan blades are driven by the motor to rotate, so that various materials are mixed into mortar in the storage tank, and then the mortar is transported into the mortar pump through the discharge auger at the bottom of the storage tank for use. The inventor believes that the following problems exist in the using process: since the sand in the raw materials for producing mortar is usually collected from the bottom of rivers, lakes or the sea, it is inevitable to mix in some large stones or other large-particle solid impurities during the collection. Once these large-particle solid impurities enter the mortar pump, it is not only easy to cause blockage of the mortar pump, but also when the mortar containing large-particle impurities is transported to the building for use through the mortar pump, it will cause the surface of the building to be uneven and affect the appearance. Therefore, a mortar feeding device that can screen out large-particle impurities in sand is needed. Summary of the Utility Model

[0003] To solve the above technical problems, the utility model provides a mortar feeding device for a mortar pump, which can screen out large-particle impurities in the mortar raw materials in advance, avoid blockage of the mortar pump by large-particle solid impurities or affect the use of the mortar, and has high reliability and practicability.

[0004] The mortar feeding device for a mortar pump of the utility model comprises a bottom plate, a bracket and a box body. The box body is fixedly installed at the upper end of the bottom plate through the bracket. A chamber is arranged in the box body, and the upper end of the box body is open. It further comprises a screening mechanism, which is installed on the box body and has a screening function. The feeding pipe of the mortar pump is installed at the lower part of the chamber of the box body, and a valve is arranged on the feeding pipe. When mortar is needed, first, a certain amount of water is added into the chamber of the box body, and then the solid raw materials required for producing mortar are screened by the screening mechanism and then added into the chamber of the box body, so that the water and the mortar solid raw materials are mixed into mortar. Then, the mortar pump is turned on, and the mortar in the chamber of the box body is transported to the designated area through the feeding pipe and the mortar pump for use. When producing mortar, it can screen out large-particle impurities in the mortar raw materials in advance, avoid blockage of the mortar pump by large-particle solid impurities or affect the use of the mortar, and has high reliability and practicability.

[0005] Preferably, the screening mechanism includes a driving mechanism, a support shaft, a positioning plug, a fixing block, a connecting plate and a sieve cylinder. The support shaft is rotatably installed on the bottom plate and the box body. The positioning plug is fixedly installed at the upper end of the support shaft. A positioning groove is provided in the fixing block. The positioning plug is inserted into the positioning groove of the fixing block. The connecting plate is fixedly installed at the upper end of the fixing block. The sieve cylinder is fixedly installed at the upper end of the connecting plate. A cavity is provided in the sieve cylinder. A plurality of filter holes communicating with the cavity are provided on the sieve cylinder. The sieve cylinder is located in the cavity of the box body. The driving mechanism is used to drive the support shaft to rotate. When pouring the solid mortar raw material into the cavity of the box body, pour the solid mortar raw material into the cavity of the sieve cylinder. Then, the solid mortar raw material falls into the cavity of the box body through a plurality of filter holes on the sieve cylinder. The large-particle solid impurities mixed in the solid mortar raw material remain in the cavity of the sieve cylinder, which facilitates the screening of the solid mortar raw material.

[0006] Preferably, the driving mechanism includes a bevel gear A, a bevel gear B, a driving shaft, a fixing plate and a driving motor. The bevel gear A is fixedly sleeved on the support shaft. The bevel gear A meshes with the bevel gear B. The bevel gear B is fixedly installed on the driving shaft. The driving shaft is rotatably installed on the fixing plate. The input end of the driving shaft is connected to the driving motor. The driving motor is fixedly installed on the bottom plate. When screening the solid mortar raw material through the sieve cylinder, turn on the driving motor. The driving motor drives the bevel gear B to drive the bevel gear A to rotate through the driving shaft. The bevel gear A drives the positioning plug to drive the fixing block, the connecting plate and the sieve cylinder to rotate through the support shaft. During the rotation of the sieve cylinder, the movement between the solid mortar raw material and the sieve cylinder is promoted, and the screening efficiency of the mortar raw material on the sieve cylinder is promoted. It is convenient to use and has high practicability.

[0007] Preferably, it further includes two rotating shafts, two small gears and a large gear. The two rotating shafts are respectively rotatably installed on the left and right parts of the box body. The two rotating shafts are both rotatably installed on the bottom plate. A plurality of stirring blades are provided on the upper parts of the two rotating shafts. The plurality of stirring blades are all located in the cavity of the box body. The two small gears are respectively fixedly installed on the two rotating shafts. The two small gears both mesh with the large gear. The large gear is fixedly installed on the support shaft. The two small gears and the large gear are all located below the box body. When filtering the solid mortar raw material through the sieve cylinder, it is necessary to rotate the support shaft. While the support shaft rotates, it makes the large gear rotate. The large gear drives the two rotating shafts to rotate through the two small gears. The two rotating shafts drive the plurality of stirring blades to rotate. During the rotation of the plurality of stirring blades, the relative movement between the solid mortar raw material and water in the cavity of the box body is promoted, and the mixing of the solid mortar raw material and water is promoted. It is convenient to use and has high practicability.

[0008] Preferably, it further includes three groups of lifting rings, a collection box, a hoisting and moving mechanism, and a flipping mechanism. The collection box is installed on the bottom plate, and the upper end of the collection box is open. The flipping mechanism is installed on the bottom plate and is located above the collection box. The flipping mechanism has a flipping function. The three groups of lifting rings are all fixedly installed at the upper end of the sieve cylinder, and the three groups of lifting rings are evenly distributed on the upper circumference of the sieve cylinder. The hoisting and moving mechanism is used for hoisting and moving the sieve cylinder; when it is necessary to clean the large-particle solid impurities in the sieve cylinder, first stop the rotation of the support shaft, then hoist the three groups of lifting rings through the hoisting and moving mechanism, and then move the sieve cylinder upward. The sieve cylinder drives the connecting plate and the fixed block to move upward until the sieve cylinder moves above the box body, then move the sieve cylinder onto the flipping mechanism, then make the hoisting and moving mechanism disengage from the three groups of lifting rings, and then flip the sieve cylinder up and down through the flipping mechanism to make the large-particle solid impurities in the sieve cylinder fall into the collection box for storage; it can automatically collect and clean the large-particle solid impurities in the sieve cylinder, which is convenient to use and has high practicability.

[0009] Preferably, the hoisting and moving mechanism includes an electric slide rail, a sliding block, a support frame, a hydraulic cylinder, a push rod, a lifting plate, three groups of ropes, and three groups of hooks. The electric slide rail is fixedly installed on the bottom plate, the sliding block is installed on the electric slide rail, and the electric slide rail is used to move the sliding block left and right. The support frame is fixedly installed at the upper end of the sliding block, the hydraulic cylinder is fixedly installed at the upper end of the support frame, the push rod is slidably installed up and down on the support frame, and the upper end of the push rod is connected to the output end of the hydraulic cylinder. The lifting plate is fixedly installed at the lower end of the push rod. The three groups of ropes are all fixedly installed at the lower end of the three groups of lifting plates, and the three groups of ropes are evenly distributed on the lower circumference of the lifting plate. The three groups of hooks are respectively fixedly installed at the lower ends of the three groups of ropes; when it is necessary to clean the solid impurities in the sieve cylinder, lower the push rod through the hydraulic cylinder. The push rod makes the three groups of ropes and the three groups of hooks descend through the lifting plate, then hook the three groups of lifting rings respectively through the three groups of hooks, then make the push rod drive the lifting plate to rise through the hydraulic cylinder. The lifting plate makes the hooks drive the lifting rings and the sieve cylinder to rise through the ropes, and then move left through the electric slide rail and the sliding block. The sliding block makes the push rod drive the lifting plate and the ropes to move left through the support frame. The ropes make the lifting rings drive the sieve cylinder to move above the flipping mechanism through the hooks, then land the sieve cylinder on the flipping mechanism, then remove the three groups of hooks from the three groups of lifting rings respectively, and then flip the sieve cylinder up and down through the flipping mechanism; it facilitates the flipping of the sieve cylinder and improves the convenience.

[0010] Preferably, the flipping mechanism includes two groups of vertical plates, two groups of rotating shafts, a stepping motor, a support plate, and a three-jaw chuck. The two groups of vertical plates are fixedly installed on the bottom plate. The two groups of rotating shafts are respectively rotatably installed on the two groups of vertical plates. The two groups of rotating shafts are coaxial. The support plate is fixedly installed on the two groups of rotating shafts. The stepping motor is fixedly installed on the vertical plate. The stepping motor is connected to one of the rotating shafts. The three-jaw chuck is fixedly installed at the upper end of the support plate. The three-jaw chuck is located above the collection box. When cleaning the large-particle solid impurities in the sieve barrel, the sieve barrel is made to fall onto the three-jaw chuck, and then the sieve barrel is clamped and fixed by the three-jaw chuck. Then, the stepping motor is turned on. The stepping motor drives the support plate to drive the three-jaw chuck to flip up and down through the rotating shaft. The three-jaw chuck drives the sieve barrel to flip, so that the opening on the sieve barrel rotates to the side facing the collection box, and the large-particle solid impurities in the sieve barrel fall into the collection box for collection. It facilitates the cleaning and collection of the solid impurities in the sieve barrel and improves the convenience.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows: large-particle impurities in the mortar raw materials can be screened out in advance, avoiding the blockage of the mortar pump by large-particle solid impurities or affecting the use of the mortar, and having high reliability and practicability. Description of the Drawings

[0012] Figure 1 is the first axonometric structural schematic diagram of the present utility model;

[0013] Figure 2 is the sectional structural schematic diagram of the present utility model;

[0014] Figure 3 is the structural schematic diagram of the support shaft, positioning plug, rotating shaft, etc.;

[0015] Figure 4 is the structural schematic diagram of the fixed block, sieve barrel, support shaft, etc.;

[0016] Figure 5 is the structural schematic diagram of the driving mechanism and the support shaft;

[0017] Figure 6 is the structural schematic diagram of the hoisting and moving mechanism.

[0018] Reference signs in the drawings: 1, bottom plate; 2, bracket; 3, box body; 4, support shaft; 5, positioning plug; 6, fixed block; 7, connecting plate; 8, sieve barrel; 9, bevel gear A; 10, bevel gear B; 11, driving shaft; 12, fixing plate; 13, driving motor; 14, rotating shaft; 15, small gear; 16, large gear; 17, lifting ring; 18, collection box; 19, electric slide rail; 20, sliding block; 21, support frame; 22, hydraulic cylinder; 23, push rod; 24, lifting plate; 25, rope; 26, hook; 27, vertical plate; 28, rotating shaft; 29, stepping motor; 30, support plate; 31, three-jaw chuck. Detailed implementation manners

[0019] To facilitate the understanding of the present utility model, the present utility model will be described more comprehensively with reference to the relevant drawings. The present utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the disclosure of the present utility model more thorough and comprehensive. Embodiment 1

[0020] As Figures 1 to 6 , the mortar feeding device for a mortar pump of the present utility model includes a bottom plate 1, a bracket 2, a box body 3 and a screening mechanism. The box body 3 is fixedly installed on the upper end of the bottom plate 1 through the bracket 2. A chamber is provided inside the box body 3. The upper end of the box body 3 is an opening. The screening mechanism is installed on the box body 3 and has a screening function. The feeding pipe of the mortar pump is installed at the lower part of the chamber of the box body 3, and a valve is provided on the feeding pipe. When mortar is needed, first add a certain amount of water into the chamber of the box body 3, and then add the solid raw materials required for producing mortar into the chamber of the box body 3 after screening through the screening mechanism, so that the water and the solid raw materials of the mortar are mixed into mortar. Then open the mortar pump, and the mortar in the chamber of the box body 3 can be transported to the designated area through the feeding pipe and the mortar pump for use. When producing mortar, it can screen out large-particle impurities in the mortar raw materials in advance, avoiding the blockage of the mortar pump by large-particle solid impurities or affecting the use of the mortar, and having high reliability and practicability.

[0021] As Figure 1 , Figure 2 and Figure 4 , the screening mechanism includes a driving mechanism, a support shaft 4, a positioning plug 5, a fixing block 6, a connecting plate 7 and a sieve cylinder 8. The support shaft 4 is rotatably installed on the bottom plate 1 and the box body 3. The positioning plug 5 is fixedly installed at the upper end of the support shaft 4. A positioning groove is provided inside the fixing block 6, and the positioning plug 5 is inserted into the positioning groove of the fixing block 6. The connecting plate 7 is fixedly installed at the upper end of the fixing block 6. The sieve cylinder 8 is fixedly installed at the upper end of the connecting plate 7. A cavity is provided inside the sieve cylinder 8, and multiple groups of filter holes communicating with the cavity are provided on the sieve cylinder 8. The sieve cylinder 8 is located inside the chamber of the box body 3. The driving mechanism is used to drive the support shaft 4 to rotate. When pouring the solid raw materials of the mortar into the chamber of the box body 3, pour the solid raw materials of the mortar into the cavity of the sieve cylinder 8. Then the solid raw materials of the mortar fall into the chamber of the box body 3 through multiple groups of filter holes on the sieve cylinder 8, and the large-particle solid impurities mixed in the solid raw materials of the mortar remain in the cavity of the sieve cylinder 8, facilitating the screening of the solid raw materials of the mortar.

[0022] As Figure 5, the drive mechanism includes bevel gear A9, bevel gear B10, drive shaft 11, fixed plate 12 and drive motor 13. Bevel gear A9 is fixedly sleeved on support shaft 4. Bevel gear A9 meshes with bevel gear B10. Bevel gear B10 is fixedly installed on drive shaft 11. Drive shaft 11 is rotatably installed on fixed plate 12. The input end of drive shaft 11 is connected to drive motor 13. Drive motor 13 is fixedly installed on base plate 1. When screening the solid mortar raw materials through sieve drum 8, turn on drive motor 13. Drive motor 13 drives bevel gear B10 to drive bevel gear A9 to rotate through drive shaft 11. Bevel gear A9 drives positioning plug 5 to drive fixed block 6, connecting plate 7 and sieve drum 8 to rotate through support shaft 4. During the rotation of sieve drum 8, the movement between the solid mortar raw materials and sieve drum 8 is promoted, and the screening efficiency of the mortar raw materials on sieve drum 8 is improved. It is convenient to use and has high practicability.

[0023] Such as Figure 2 And Figure 3 , two groups of rotating shafts 14 are respectively rotatably installed on the left and right parts of box body 3. Two groups of rotating shafts 14 are both rotatably installed on base plate 1. Multiple groups of stirring blades are arranged on the upper parts of two groups of rotating shafts 14. Multiple groups of stirring blades are all located in the cavity of box body 3. Two groups of small gears 15 are respectively fixedly installed on two groups of rotating shafts 14. Two groups of small gears 15 both mesh with large gear 16. Large gear 16 is fixedly installed on support shaft 4. Two groups of small gears 15 and large gear 16 are all located on the lower side of box body 3. When filtering the solid mortar raw materials through sieve drum 8, it is necessary to rotate support shaft 4. While support shaft 4 is rotating, it makes large gear 16 rotate. Large gear 16 drives two groups of rotating shafts 14 to rotate through two groups of small gears 15. Two groups of rotating shafts 14 drive multiple groups of stirring blades to rotate. During the rotation of multiple groups of stirring blades, the relative movement between the solid mortar raw materials and water in the cavity of box body 3 is promoted, and the mixing between the solid mortar raw materials and water is promoted. It is convenient to use and has high practicability.

[0024] Such as Figure 2 , Figure 4 And Figure 6, further comprising three groups of lifting rings 17, a collection box 18, a hoisting and moving mechanism, and a flipping mechanism. The collection box 18 is installed on the bottom plate 1. The upper end of the collection box 18 is open. The flipping mechanism is installed on the bottom plate 1 and is located above the collection box 18. The flipping mechanism has a flipping function. The three groups of lifting rings 17 are all fixedly installed at the upper end of the sieve cylinder 8. The three groups of lifting rings 17 are evenly distributed in the circumferential direction at the upper end of the sieve cylinder 8. The hoisting and moving mechanism is used for hoisting and moving the sieve cylinder 8. When it is necessary to clean the large-particle solid impurities in the sieve cylinder 8, first stop the rotation of the support shaft 4, and then hoist the three groups of lifting rings 17 through the hoisting and moving mechanism, so as to move the sieve cylinder 8 upward. The sieve cylinder 8 drives the connecting plate 7 and the fixed block 6 to move upward until the sieve cylinder 8 moves above the box body 3. Then move the sieve cylinder 8 onto the flipping mechanism. Then make the hoisting and moving mechanism disengage from the three groups of lifting rings 17. Then flip the sieve cylinder 8 up and down through the flipping mechanism, so that the large-particle solid impurities in the sieve cylinder 8 fall into the collection box 18 for storage. It can automatically collect and clean the large-particle solid impurities in the sieve cylinder 8, which is convenient to use and has high practicability.

[0025] Such as Figure 1 , the flipping mechanism includes two groups of vertical plates 27, two groups of rotating shafts 28, a stepping motor 29, a support plate 30, and a three-jaw chuck 31. The two groups of vertical plates 27 are both fixedly installed on the bottom plate 1. The two groups of rotating shafts 28 are respectively rotatably installed on the two groups of vertical plates 27. The two groups of rotating shafts 28 are coaxial. The support plate 30 is fixedly installed on the two groups of rotating shafts 28. The stepping motor 29 is fixedly installed on the vertical plate 27. The stepping motor 29 is connected to one of the rotating shafts 28. The three-jaw chuck 31 is fixedly installed at the upper end of the support plate 30. The three-jaw chuck 31 is located above the collection box 18. When cleaning the large-particle solid impurities in the sieve cylinder 8, place the sieve cylinder 8 on the three-jaw chuck 31, and then clamp and fix the sieve cylinder 8 through the three-jaw chuck 31. Then turn on the stepping motor 29. The stepping motor 29 drives the support plate 30 to drive the three-jaw chuck 31 to flip up and down through the rotating shaft 28. The three-jaw chuck 31 drives the sieve cylinder 8 to flip, so that the opening on the sieve cylinder 8 rotates to the side facing the collection box 18, and the large-particle solid impurities in the sieve cylinder 8 fall into the collection box 18 for collection. It facilitates the cleaning and collection of the solid impurities in the sieve cylinder 8 and improves the convenience. Embodiment 2

[0026] On the basis of Embodiment 1, the hydraulic cylinder 22 and the push rod 23 can be replaced by a winch. The winch is fixedly installed at the upper end of the support frame 21. A rope is arranged on the winch. The lower end of the rope is fixedly connected to the lifting plate 24. The lifting and lowering of the lifting plate 24 can also be realized by the winch winding and unwinding the rope.

[0027] The support shaft 4, sieve cylinder 8, drive motor 13, lifting ring 17, electric slide rail 19, hydraulic cylinder 22, rope 25, vertical plate 27, stepping motor 29 and three-jaw chuck 31 of the mortar feeding device for the mortar pump of the present utility model are all purchased on the market. Those skilled in the industry only need to install and operate according to the attached operation manual, without the need for those skilled in the art to make creative efforts.

[0028] The above are only the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art of this technology, without departing from the technical principle of the present utility model, several improvements and modifications can also be made, and these improvements and modifications should also be regarded as the protection scope of the present utility model.

Claims

1. A mortar feeding device for a mortar pump, comprising a bottom plate (1), a bracket (2) and a box body (3). The box body (3) is fixedly installed at the upper end of the bottom plate (1) through the bracket (2). A chamber is arranged inside the box body (3), and the upper end of the box body (3) is open; characterized in that, It also includes a screening mechanism which is installed on the box body (3) and has a screening function; The screening mechanism includes a driving mechanism, a support shaft (4), a positioning plug (5), a fixed block (6), a connecting plate (7) and a screening cylinder (8). The support shaft (4) is rotatably installed on the bottom plate (1) and the box body (3). The positioning plug (5) is fixedly installed at the upper end of the support shaft (4). A positioning groove is provided in the fixed block (6), and the positioning plug (5) is inserted into the positioning groove of the fixed block (6). The connecting plate (7) is fixedly installed at the upper end of the fixed block (6), and the screening cylinder (8) is fixedly installed at the upper end of the connecting plate (7). A cavity is provided in the screening cylinder (8), and a plurality of filter holes communicating with the cavity are provided on the screening cylinder (8). The screening cylinder (8) is located in the chamber of the box body (3), and the driving mechanism is used to drive the support shaft (4) to rotate.

2. The mortar feeding device for a mortar pump according to claim 1, characterized in that The driving mechanism includes a bevel gear A (9), a bevel gear B (10), a driving shaft (11), a fixing plate (12) and a driving motor (13). The bevel gear A (9) is fixedly sleeved on the support shaft (4), the bevel gear A (9) meshes with the bevel gear B (10), the bevel gear B (10) is fixedly installed on the driving shaft (11), the driving shaft (11) is rotatably installed on the fixing plate (12), the input end of the driving shaft (11) is connected to the driving motor (13), and the driving motor (13) is fixedly installed on the bottom plate (1).

3. The mortar feeding device for a mortar pump according to claim 2, characterized in that, It also includes two groups of rotating shafts (14), two groups of small gears (15) and a large gear (16). The two groups of rotating shafts (14) are respectively rotatably installed on the left and right parts of the box body (3), and the two groups of rotating shafts (14) are both rotatably installed on the bottom plate (1). A plurality of stirring blades are provided on the upper parts of the two groups of rotating shafts (14), and the plurality of stirring blades are all located in the chamber of the box body (3). The two groups of small gears (15) are respectively fixedly installed on the two groups of rotating shafts (14), the two groups of small gears (15) both mesh with the large gear (16), the large gear (16) is fixedly installed on the support shaft (4), and the two groups of small gears (15) and the large gear (16) are all located below the box body (3).

4. The mortar feeding device for a mortar pump according to claim 1, characterized in that, It also includes three groups of lifting rings (17), a collection box (18), a hoisting and moving mechanism and a turning mechanism. The collection box (18) is installed on the bottom plate (1), the upper end of the collection box (18) is open, the turning mechanism is installed on the bottom plate (1), the turning mechanism is located above the collection box (18), and the turning mechanism has a turning function. The three groups of lifting rings (17) are all fixedly installed at the upper end of the screening cylinder (8), and the three groups of lifting rings (17) are evenly distributed in the circumferential direction at the upper end of the screening cylinder (8). The hoisting and moving mechanism is used for hoisting and moving the screening cylinder (8).

5. The mortar feeding device for a mortar pump according to claim 4, characterized in that, The hoisting and moving mechanism includes an electric slide rail (19), a sliding block (20), a support frame (21), a hydraulic cylinder (22), a push rod (23), a lifting plate (24), three groups of ropes (25) and three groups of hooks (26). The electric slide rail (19) is fixedly installed on the bottom plate (1), the sliding block (20) is installed on the electric slide rail (19), and the electric slide rail (19) is used to move the sliding block (20) left and right. The support frame (21) is fixedly installed at the upper end of the sliding block (20), the hydraulic cylinder (22) is fixedly installed at the upper end of the support frame (21), the push rod (23) is slidably installed up and down on the support frame (21), the upper end of the push rod (23) is connected to the output end of the hydraulic cylinder (22), the lifting plate (24) is fixedly installed at the lower end of the push rod (23), the three groups of ropes (25) are all fixed to the lower end of the three groups of lifting plates (24), the three groups of ropes (25) are circumferentially evenly distributed at the lower end of the lifting plate (24), and the three groups of hooks (26) are respectively fixedly installed at the lower ends of the three groups of ropes (25).

6. The mortar feeding device for a mortar pump according to claim 4, characterized in that, The flipping mechanism includes two groups of vertical plates (27), two groups of rotating shafts (28), a stepping motor (29), a support plate (30) and a three-jaw chuck (31). The two groups of vertical plates (27) are both fixedly installed on the bottom plate (1), the two groups of rotating shafts (28) are respectively rotatably installed on the two groups of vertical plates (27), the two groups of rotating shafts (28) are coaxial, the support plate (30) is fixedly installed on the two groups of rotating shafts (28), the stepping motor (29) is fixedly installed on the vertical plate (27), the stepping motor (29) is connected to one of the rotating shafts (28), and the three-jaw chuck (31) is fixedly installed at the upper end of the support plate (30), and the three-jaw chuck (31) is located above the collection box (18).

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