A powder material vibration conveying device for preparing metal powder

Abstract

The present invention relates to the technical field of metal powder production, and discloses a powder vibrating conveying device for preparing metal powder, comprising a conveying structure, a pair of vibration structures are arranged below the conveying structure, the pair of vibration structures are arranged symmetrically in opposite directions, a feeding unit is fixedly arranged on the right end of one of the vibration structures, the feeding unit is located above the conveying structure, and the conveying structure is used for carrying powder conveying and adjusting the conveying direction. The present invention can effectively break up clumps, ensure conveying uniformity, bidirectional conveying function, multiple conveying combinations and strong tank adaptability. The vibration structure is used to drive the conveying structure to vibrate, and the clumps of metal powder can be broken up during the powder material feeding process, thereby ensuring the uniformity and fluidity of the powder in subsequent processes, improving product quality, changing the conveying direction of the metal powder, reducing the circuitousness of the conveying path, and improving production efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of metal powder production, in particular to a powder material vibration conveying device for preparing metal powder. Background Art

[0002] During the production and processing of metal powders, they may absorb water vapor or generate static electricity due to friction during transportation, thus forming agglomerates. However, when using vibration conveying, the material mainly slides or jumps during the conveying process, and the contact with the conveying equipment is relatively gentle, which will not cause obvious damage to the particle shape and particle size of the metal powder, and can also break up the agglomerated powder, which is also helpful for quantitative conveying and packaging. Since metal powders are mostly collected and stored in tanks, the existing vibration conveying device can only perform single vibration unloading and conveying, and cannot be used for multi-directional conveying and packaging according to demand. Summary of the invention

[0003] The object of the present invention is to provide a powder vibrating conveying device for preparing metal powder, so as to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a powder vibrating conveying device for preparing metal powder, comprising a conveying structure, a pair of vibration structures are arranged below the conveying structure, the pair of vibration structures are arranged symmetrically in opposite directions, a feeding unit is fixedly arranged on the right end of one of the vibration structures, the feeding unit is located above the conveying structure, the conveying structure is used to carry the powder conveying and adjust the conveying direction, the vibration structure is used to support the conveying structure and drive the conveying structure to vibrate, the vibration structure is also used to convey filled cans or barrels, and the feeding unit is used to centrally collect and separate the corresponding feeding.

[0005] Preferably, the conveying structure includes a pair of flip arms, a pair of conveying plates, a plurality of first bolts, a pair of baffles, a plurality of second bolts and two pairs of export plates; one end of the pair of flip arms is relatively movably connected, and the other end of the flip arm is relatively fitted, the pair of conveying plates are both L-shaped, one end of the pair of conveying plates is symmetrically and movably arranged on the flip arm, and one end of the conveying plate is symmetrically arranged with a lifting groove, the upper wall of the other end of the pair of conveying plates is penetrated with a T-shaped mounting groove, one end of a plurality of the first bolts is movably penetrated through the lifting groove, and the first bolts are screwed into the two ends of the flip arm, one end of the pair of baffles is movably inserted into the mounting groove, a plurality of the second bolts are movably screwed to the side wall of the other end of the conveying plate and are connected with the mounting groove, the second bolts are tightened to the baffle for fixing, the two pairs of export plates are movably inserted into the upper wall of the left end of the baffle and the upper wall of the left end of the flip arm, and the export plates are respectively located at the left end of the conveying plate and are relatively inclined and symmetrical.

[0006] Preferably, the vibration structure includes a first support arm, a second support arm, a third bolt, a baffle, a pair of belt rollers, a drive motor, a conveyor belt and a vibration assembly; the first support arm is L-shaped, one end of the first support arm is fixedly arranged on the left end side wall of one of the conveying plates, the other end of the first support arm is located on the left side of the conveying plate, the second support arm is T-shaped, one end of the second support arm is fixedly arranged on the right end side wall of one of the conveying plates and the second support arm corresponds to the first support arm, the third bolt is movably screwed into the right side wall of the second support arm, the baffle is L-shaped, and an adjustment groove is arranged in the middle of one end of the baffle, one end of the baffle is movably mounted on the third bolt, and the baffle moves and flips on the third bolt through the adjustment groove, a pair of belt rollers are movably arranged on the other end of the first support arm and the other end of the second support arm, and the belt rollers correspond to the conveying plate, the drive motor is fixedly arranged on the other end of the second support arm and the driving end of the drive motor is connected to one of the belt rollers, the conveyor belt is movably mounted on the belt roller, and the vibration assembly is fixedly arranged between the first support arm and the other end of the second arm.

[0007] Preferably, the vibration assembly includes a pair of legs, a pair of springs, a pair of universal wheels, a connecting seat and a vibration motor; one end of the pair of legs is respectively fixedly arranged on the other end of the first arm and the other end of the second arm and is symmetrical to each other, one end of the pair of springs is respectively fixedly arranged on the other end of the legs, a pair of universal wheels is respectively arranged on the other end of the springs, two ends of the connecting seat are respectively movably connected to the other end of the legs, the vibration motor is fixedly arranged on the middle upper wall of the connecting seat, and the vibration motor is located below the middle of the conveyor belt.

[0008] Preferably, the unloading unit includes a pair of brackets, a material box and a pair of discharge ports; one end of the pair of brackets is respectively fixedly arranged on the front side of the right end of one of the conveying plates, the material box is fixedly arranged on the other end of the pair of brackets, and the material box is located above the right end of the pair of conveying plates, and the pair of discharge ports are respectively symmetrically arranged on the lower wall of the discharge box, and the discharge ports respectively correspond to the middle part of the right end of the conveying plate.

[0009] Preferably, the support legs are raised and lowered on the first support arm and the second support arm to adjust the inclination angles of the conveyor belt and the conveyor plate.

[0010] Preferably, the other end of the baffle rod is relatively symmetrical or oppositely symmetrical, and the other end of the baffle rod is located at the front side or the rear side of the conveyor belt.

[0011] Preferably, the conveying plates are lowered and connected in parallel by the flipping arms, or the conveying plates are flipped relative to each other by the flipping arms to form an angle and correspond to the discharge ports respectively.

[0012] The invention provides a powder vibrating conveying device for preparing metal powder, which has the following beneficial effects: 1. The present invention utilizes a vibration structure to drive a conveying structure to vibrate, so that metal powder agglomerates can be dispersed during the powder material feeding process; for example, in the production of metal 3D printing powder, metal powders are easily agglomerated due to moisture or storage conditions. This vibration dispersion function can restore the powder to a good dispersion state, ensure the uniformity and fluidity of the powder in subsequent processes, and improve product quality.

[0013] 2. Vibration conveying can make the powder move more evenly and avoid accumulation or blockage of powder during conveying. In the manufacturing process of some electronic components that require high precision in powder conveying, uniform powder conveying can ensure a stable supply of raw materials, thereby ensuring the consistency of product performance.

[0014] 3. The flip arm in the conveying structure can make the conveying plate flip relative to each other to form two-way conveying. In different production scenarios, this two-way conveying capability can flexibly adjust the conveying direction according to actual needs, thereby improving the flexibility of production layout. For example, on a production line, the conveying direction of metal powder can be changed at any time according to the position of different processes and the direction of material flow, thereby reducing the detours of the conveying path and improving production efficiency.

[0015] 3. It can form a unified unloading and separate transportation, which is very useful for the production process that needs to distribute the same batch of metal powder to multiple different processing links or equipment; for example, in powder metallurgy production, a large metal powder storage bin can unload the materials uniformly through this device, and then transport the powder to multiple different molding molds at the same time, realizing multi-station simultaneous operation and improving production efficiency.

[0016] 4. Through the corresponding coordination between the vibration structure and the conveyor belt, a process of unloading, vibration breaking and reverse re-conveyance is formed; this multiple conveying method can further ensure the uniformity and dispersion of the powder, and at the same time can better adapt to different production layouts and process requirements.

[0017] 5. The conveyor belt can carry the cans and move them in sequence to collect metal powders. It can adapt to cans of different sizes according to the separation or docking of the conveyor plates. When the conveyor plates are separated, smaller cans can be put in for sequential packaging. When the conveyor plates are docked, larger cans can be carried for assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the assembly structure of the present invention; Figure 2 It is a schematic diagram of the disassembly structure of the conveying structure; Figure 3 It is a schematic diagram of the assembly structure of the conveying structure; Figure 4 It is a schematic diagram of the structure splitting of the vibration structure; Figure 5It is a schematic diagram of the vibration structure assembly; Figure 6 It is a schematic diagram of the split structure of the blanking unit; Figure 7 for Figure 2 A local enlarged structural diagram of the part; Figure 8 for Figure 2 A schematic diagram of the local enlarged structure at B in FIG. Fig. 9 for Figure 4 Schematic diagram of the local enlarged structure at point C in the figure.

[0019] In the figure: 1. conveying structure, 11. flip arm, 12. conveying plate, 13. first bolt, 14. baffle, 15. second bolt, 16. export plate, 2. vibration structure, 21. first support arm, 22. second support arm, 23. third bolt, 24. baffle rod, 25. belt roller, 26. drive motor, 27. conveyor belt, 28. vibration assembly, 281. support leg, 282. spring, 283. universal wheel, 284. connecting seat, 285. vibration motor, 3. unloading unit, 31. bracket, 32. material box, 33. discharge port, 4. lifting slot, 5. installation slot. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0021] See also Figure 1-Figure 9 The present invention provides a technical solution: a powder vibrating conveying device for preparing metal powder, comprising a conveying structure 1, a pair of vibrating structures 2 are arranged below the conveying structure 1, the pair of vibrating structures 2 are arranged symmetrically in opposite directions, a feeding unit 3 is fixedly arranged on the right end of one of the vibrating structures 2, the feeding unit 3 is located above the conveying structure 1, the conveying structure 1 is used for carrying powder conveying and adjusting the conveying direction, the vibrating structure 2 is used for supporting the conveying structure 1 and driving the conveying structure 1 to vibrate, the vibrating structure 2 is also used for conveying filled cans or barrels, and the feeding unit 3 is used for centralized collection and separation of corresponding feeding.

[0022] Furthermore, in order to carry the powder and adjust the conveying direction, such as Figure 2 , Figure 3 , Figure 7 and Figure 8As shown, the conveying structure 1 includes a pair of flip arms 11, a pair of conveying plates 12, a plurality of first bolts 13, a pair of baffles 14, a plurality of second bolts 15 and two pairs of export plates 16; one end of the pair of flip arms 11 is relatively movably connected, and the other end of the flip arm 11 is relatively fitted, the pair of conveying plates 12 are both L-shaped, one end of the pair of conveying plates 12 is symmetrically movably arranged on the flip arm 11, and one end of the conveying plate 12 is symmetrically arranged with a lifting groove 4, and the upper wall of the other end of the pair of conveying plates 12 is penetrated with a T-shaped installation groove 5, one end of the plurality of first bolts 13 is movably penetrated through the lifting groove 4, and the first bolts 13 are screwed to both ends of the flip arm 11 In the embodiment, one end of a pair of baffles 14 is movably inserted into the mounting groove 5, and a plurality of second bolts 15 are movably screwed to the side wall of the other end of the conveying plate 12 and are communicated with the mounting groove 5. The second bolts 15 are tightened against the baffle 14 for fixing. Two pairs of export plates 16 are movably inserted into the upper wall of the left end of the baffle 14 and the upper wall of the left end of the flip arm 11, and the export plates 16 are respectively located at the left end of the conveying plate 12 and are relatively inclined and symmetrical. The conveying plate 12 is driven to flip relative to each other by the flip arm 11 to form conveying in two directions. The baffle 14 and the flip arm 11 are used to shield the powder on both sides of the conveying plate 12, and the powder is output from the center of the conveying plate 12 by the export plates 16.

[0023] Furthermore, in order to support the conveying structure 1 and drive the conveying structure 1 to vibrate, as Figure 4 , Figure 5 and Fig. 9As shown, the vibration structure 2 includes a first support arm 21, a second support arm 22, a third bolt 23, a baffle 24, a pair of belt rollers 25, a drive motor 26, a conveyor belt 27 and a vibration assembly 28; the first support arm 21 is L-shaped, one end of the first support arm 21 is fixedly arranged on the left end side wall of one of the conveying plates 12, and the other end of the first support arm 21 is located on the left side of the conveying plate 12; the second support arm 22 is T-shaped, one end of the second support arm 22 is fixedly arranged on the right end side wall of one of the conveying plates 12 and the second support arm 22 corresponds to the first support arm 21, the third bolt 23 is movably screwed into the right side wall of the second support arm 22, the baffle 24 is L-shaped, and an adjustment groove is arranged in the middle of one end of the baffle 24, one end of the baffle 24 is movably sleeved on the third bolt 23, and the baffle 24 moves and flips on the third bolt 23 through the adjustment groove, and the pair of belt rollers 25 are respectively The belt roller 25 is movably arranged on the other end of the first arm 21 and the other end of the second arm 22, and the belt roller 25 corresponds to the conveying plate 12. The driving motor 26 is fixedly arranged on the other end of the second arm 22 and the driving end of the driving motor 26 is connected to one of the belt rollers 25. The conveyor belt 27 is movably sleeved on the belt roller 25. The vibration component 28 is fixedly arranged between the first arm 21 and the other end of the second arm 22; the belt roller 25 and the conveyor belt 27 are supported by the first arm 21 and the second arm 22, and the belt roller 25 and the conveyor belt 27 are driven to rotate by the driving motor 26. One side of the conveyor belt 27 is blocked by the blocking rod 24, and supported and vibrated by the vibration component 28. The other end of the blocking rod 24 is relatively symmetrical or oppositely symmetrical, and the other end of the blocking rod 24 is located at the front or rear side of the conveyor belt 27, which is used to limit the loading of the tank body.

[0024] Furthermore, in order to drive the conveying plate 12 and the material box 32 to vibrate, as Figure 4 As shown, the vibration assembly 28 includes a pair of legs 281, a pair of springs 282, a pair of universal wheels 283, a connecting seat 284 and a vibration motor 285; one end of the pair of legs 281 is fixedly arranged on the other end of the first arm 21 and the other end of the second arm 22 and is symmetrical to each other, one end of the pair of springs 282 is fixedly arranged on the other end of the legs 281, a pair of universal wheels 283 is arranged on the other end of the springs 282, two ends of the connecting seat 284 are movably connected to the other end of the legs 281, and the vibration motor 285 is connected to the vibration motor 285. 285 is fixedly arranged on the middle upper wall of the connecting seat 284, and the vibration motor 285 is located below the middle of the conveyor belt 27; it is supported and installed and the height is adjusted by the support leg 281, the spring 282 is forced to generate vibration, the equipment is moved by the universal wheel 283, and the vibration is generated by the vibration motor 285. The support leg 281 is raised and lowered on the first support arm 21 and the second support arm 22 to adjust the inclination angle of the conveyor belt 27 and the conveyor plate 12, and is used to adjust the height of the left and right ends of the conveyor plate 12, which is conducive to the powder being vibrated and moved to one side.

[0025] Furthermore, in order to centrally collect and separate the corresponding materials, such as Figure 6 As shown, the unloading unit 3 includes a pair of brackets 31, a material box 32 and a pair of discharge ports 33; one end of the pair of brackets 31 is respectively fixedly arranged on the front side of the right end of one of the conveying plates 12, the material box 32 is fixedly arranged on the other end of the pair of brackets 31, and the material box 32 is located above the right end of the pair of conveying plates 12, and a pair of discharge ports 33 are respectively symmetrically arranged on the lower wall of the discharge box 32, and the discharge ports 33 respectively correspond to the middle of the right end of the conveying plate 12; the material box 32 is fixed on one of the conveying plates 12 by supporting the bracket 31, the powder material is concentrated by the material box 32, and the material is discharged from the corresponding conveying plates 12 through the discharge ports 33, and when the conveying plates 12 form an angle relative to each other, the unloading can still be concentrated and distinguished, the conveying plates 12 are lowered and parallelly docked by the flip arm 11, or the conveying plates 12 are relatively flipped by the flip arm 11 to form an angle and respectively correspond to the discharge ports 33, which are used for corresponding use according to design requirements.

[0026] Working principle: S1. First, the device can be moved by the universal wheel 283 in the vibration assembly 28, and the device is powered on when in use; S2. For example, when the metal powder needs to be transported and dried, the powder can be concentratedly placed through the feeding unit 3, and the vibration structure 2 is used to generate vibration feeding and the conveying structure 1 is used to transport the powder, and after the powder is transported from the right end to the left by the conveying structure 1, the powder falls on the conveyor belt 27, and is then transported to the right by the conveyor belt 27, so as to achieve scattered and uniform transportation, which is conducive to drying processing; That is, the material box 32 supported by the bracket 31 is put in, and then the vibration motor 285 on the connecting seat 284 drives the conveying plate 12 and the material box 32 to vibrate through the spring 282 on the supporting leg 281; the powder in the material box 32 can be discharged downward through the two discharge ports 33 and fall on the left end of the conveying plate 12; As the conveying plate 12 vibrates, the powder is transported from the right end to the left inside the conveying plate 12 by the flip arm 11 in the conveying structure 1 and the baffle 14, and is output in the center by limiting the two output plates 16 at the left end of the conveying plate 12 and falls on the left end of the conveying belt 27; then the belt roller 25 is driven to rotate by the driving motor 26, so as to drive the conveying belt 27 to rotate and transport between the first arm 21 and the second arm 22, and the powder is transported from the left end to the right; S3. When the powder is transported for input or subpackaging, the flip arm 11 can be relatively flipped to drive the conveying plate 12 to form an angle, so that the conveying plate 12 and the conveyor belt 27 can be transported in two directions; and after the conveying plate 12 is flipped, the baffle 14 can be adjusted to move and block in the mounting groove 5 by the second bolt 15; if the conveying plate 12 is docked and transported in the same direction, the flip arm 11 is moved downward on the conveying plate 12 through the lifting groove 4 by the first bolt 13, and after the conveying plates 12 are parallel to each other, the conveying plates 12 are docked in the same plane through the flip arm 11; S4, after the powder is vibrated and discharged, the powder is vibrated and conveyed in two directions or in the same direction through the connected conveying plate 12; the tank body can also be placed on the conveying belt 27 and limited by the baffle 24 installed by the third bolt 23, the smaller tank body can be placed on the conveying belt 27 alone, and the larger tank body can be located in the middle of the conveying belt 27 to collect the divided materials output by the conveying plate 12 in turn for sub-packaging or unified assembly; S5. When a larger tank moves between the conveyor belts 27 in the center, the blocking rod 24 is adjusted on the third bolt 23 to block and limit the tanks with different diameters.

[0027] Although 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 the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A powder vibrating conveying device for preparing metal powder, characterized in that: The invention comprises a conveying structure (1), a pair of vibration structures (2) are arranged below the conveying structure (1), the pair of vibration structures (2) are arranged symmetrically in opposite directions, a material discharge unit (3) is fixedly arranged on the right end of one of the vibration structures (2), the material discharge unit (3) is located above the conveying structure (1), the conveying structure (1) is used to carry powder for conveying and adjust the conveying direction, the vibration structure (2) is used to support the conveying structure (1) and drive the conveying structure (1) to vibrate, the vibration structure (2) is also used to convey a filled can or barrel, and the material discharge unit (3) is used to centrally collect and separate corresponding discharge materials; The conveying structure (1) comprises a pair of flip arms (11), a pair of conveying plates (12), a plurality of first bolts (13), a pair of baffles (14), a plurality of second bolts (15) and two pairs of export plates (16); One end of the pair of flip arms (11) is relatively movably connected, and the other end of the flip arms (11) is relatively fitted, the pair of conveying plates (12) are both L-shaped, one end of the pair of conveying plates (12) is symmetrically movably arranged on the flip arms (11), and one end of the conveying plates (12) is symmetrically arranged with lifting grooves (4), the other end of the pair of conveying plates (12) is penetrated by the upper wall with a T-shaped installation groove (5), one end of a plurality of the first bolts (13) is movably penetrated through the lifting grooves (4), and the first bolts (13) are screwed At both ends of the flip arm (11), one end of a pair of baffles (14) is movably inserted into the mounting groove (5), and a plurality of second bolts (15) are movably screwed to the side wall of the other end of the conveying plate (12) and communicate with the mounting groove (5). The second bolts (15) press against the baffle (14) for fixing. Two pairs of export plates (16) are movably inserted into the upper wall of the left end of the baffle (14) and the upper wall of the left end of the flip arm (11), and the export plates (16) are respectively located at the left end of the conveying plate (12) and are relatively inclined and symmetrical.

2. A powder vibrating conveying device for preparing metal powder according to claim 1, characterized in that: The vibration structure (2) comprises a first support arm (21), a second support arm (22), a third bolt (23), a stop rod (24), a pair of belt rollers (25), a drive motor (26), a conveyor belt (27), and a vibration assembly (28); The first support arm (21) is L-shaped, one end of the first support arm (21) is fixedly arranged on the left side wall of one of the conveying plates (12), and the other end of the first support arm (21) is located on the left side of the conveying plate (12). The second support arm (22) is T-shaped, one end of the second support arm (22) is fixedly arranged on the right side wall of one of the conveying plates (12), and the second support arm (22) corresponds to the first support arm (21). The third bolt (23) is movably screwed into the right side wall of the second support arm (22). The blocking rod (24) is L-shaped, and an adjustment groove is provided in the middle of one end of the blocking rod (24). One end of the blocking rod (24) is movably sleeved on The conveyor belt (27) is movably mounted on the belt roller (25), and the blocking rod (24) is moved and turned on the third bolt (23) through the adjustment groove. A pair of belt rollers (25) are movably arranged on the other end of the first arm (21) and the other end of the second arm (22), and the belt rollers (25) correspond to the conveying plate (12). The driving motor (26) is fixedly arranged on the other end of the second arm (22), and the driving end of the driving motor (26) is connected to one of the belt rollers (25). The conveyor belt (27) is movably mounted on the belt rollers (25). The vibration assembly (28) is fixedly arranged between the other end of the first arm (21) and the second arm (22).

3. A powder vibrating conveying device for preparing metal powder according to claim 2, characterized in that: The vibration assembly (28) comprises a pair of legs (281), a pair of springs (282), a pair of universal wheels (283), a connecting seat (284), and a vibration motor (285); One ends of a pair of legs (281) are respectively fixedly arranged on the other ends of the first arm (21) and the second arm (22) and are symmetrical to each other; one ends of a pair of springs (282) are respectively fixedly arranged on the other ends of the legs (281); a pair of universal wheels (283) are respectively arranged on the other ends of the springs (282); two ends of the connecting seat (284) are respectively movably connected to the other ends of the legs (281); the vibration motor (285) is fixedly arranged on the middle upper wall of the connecting seat (284); and the vibration motor (285) is located below the middle of the conveyor belt (27).

4. A powder vibrating conveying device for preparing metal powder according to claim 3, characterized in that: The material unloading unit (3) comprises a pair of brackets (31), a material box (32) and a pair of material discharge ports (33); One end of the pair of brackets (31) is respectively fixedly arranged on the front side of the right end of one of the conveying plates (12); the material box (32) is fixedly arranged on the other end of the pair of brackets (31), and the material box (32) is located above the right ends of the pair of conveying plates (12); the pair of discharge ports (33) are respectively symmetrically arranged on the lower wall of the discharge port (32), and the discharge ports (33) respectively correspond to the middle part of the right end of the conveying plate (12).

5. A powder vibrating conveying device for preparing metal powder according to claim 4, characterized in that: The support legs (281) are raised and lowered on the first support arm (21) and the second support arm (22) to adjust the inclination angles of the conveyor belt (27) and the conveyor plate (12).

6. A powder vibrating conveying device for preparing metal powder according to claim 5, characterized in that: The other end of the baffle rod (24) is relatively symmetrical or counter-symmetrical, and the other end of the baffle rod (24) is located at the front side or the rear side of the conveyor belt (27).

7. A powder vibrating conveying device for preparing metal powder according to claim 6, characterized in that: The conveying plates (12) are lowered and connected to each other in parallel through the flipping arms (11), or the conveying plates (12) are flipped relative to each other through the flipping arms (11) to form an angle and correspond to the discharge ports (33) respectively.

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