A semi-dry rice noodle rolling and balling apparatus

Abstract

The application discloses a kind of semi-dry rice noodle roll equipment, including strip powder conveyor, noodle conveyor, roll device and tray, strip powder conveyor includes first rack and strip powder carrier tape, noodle conveyor includes second rack and noodle carrier tape, roll device includes roll motor, cam, roll main gear, roll slave gear and rotating shaft, cam and roll main gear are connected with the output shaft of roll motor by means of key, roll main gear and roll slave gear are mutually engaged, key is arranged between roll slave gear and rotating shaft, rotating shaft is further fixedly connected with roll shaft, roll shaft is arranged above strip powder carrier tape, tray or noodle carrier tape, the other end of rotating shaft is equipped with follow-up bearing, follow-up bearing is sleeved in the groove of cam.Using the technical scheme of the application, the strip-shaped rice flour is curled and formed by automatic machinery, the consistency of the appearance of the rice noodle roll forming is improved, the strip-shaped rice flour is uniformly curled and formed everywhere, and the labor intensity of packaging workers is reduced.

Description

Technical Field

[0001] This invention belongs to the technical field of rice noodle processing equipment, and particularly relates to a semi-dry rice noodle rolling equipment. Background Technology

[0002] Rice noodles are long, thin, noodle-like foods made primarily from rice. They are a healthy and green food, widely favored by consumers. Conventional rice noodles are made through a series of complex processes including washing, soaking and fermentation, grinding, steaming, extruding, steaming again, cooling, and washing. This process is subject to many limitations. In recent years, instant rice noodles have become popular due to their convenience; they only require scalding with hot water before consumption. The production process for instant rice noodles mainly includes: dough preparation, mixing, rolling raw dough, cutting and extruding, steaming and oiling, cutting into portions, placing individual portions in boxes, frying and draining oil or puffing and drying, cooling, inspection, placing seasoning packets, packaging, and secondary quality inspection.

[0003] In the prior art, patent document with publication number "CN116491670A" discloses a convenient rice noodle rolling and drying equipment, including a frame, a rice noodle carrier belt, multiple trays, a rice noodle rolling device, and a drive mechanism. The rice noodle rolling device includes a rolling gear, which is mounted on the frame using bearings. The rolling gear is also fixedly connected to a rolling shaft, which is fixedly connected to a spiral guide plate. The trays are fixedly connected to the rice noodle carrier cylinders. The upper end of the guide plate is aligned with the end of the rice noodle carrier belt, and the lower end of the guide plate is aligned with the top of at least one rice noodle carrier cylinder. The drive mechanism is used to transport the rice noodles from one end of the rice noodle carrier belt to the other end. The rice noodle rolling device is used to roll the rice noodles into a cylindrical rice noodle bowl. The rice noodle carrier cylinder is used to receive and hold the rice noodles. The drive mechanism is also used to output the rice noodles outward along with the trays. This patented technology allows strip-shaped rice noodles to slide down a spiral guide under their own weight, curling into a ball. Hot air is then introduced to dry the cylindrical rice noodles, making them easy to package in paper bags or bowls. However, this patented technology, which relies on the rice noodles sliding down the spiral guide under their own weight and curling into a ball, has limited friction between the rice noodles and the guide. Furthermore, the friction is uneven across different areas of the rice noodles. In actual production, this can easily lead to areas of the rice noodles failing to curl effectively, resulting in inconsistent sealed appearance. Summary of the Invention

[0004] To solve the above-mentioned technical problems, the present invention provides a semi-dry rice noodle roll rolling device.

[0005] The present invention is achieved through the following technical solutions.

[0006] This invention provides a semi-dried rice noodle rolling device, comprising a rice noodle conveyor, a rice noodle dough conveyor, a rolling device, and a tray. The rice noodle conveyor includes a first frame and a rice noodle carrier belt, and the rice noodle dough conveyor includes a second frame and a rice noodle carrier belt. The intersection angle between the length direction of the rice noodle carrier belt and the length direction of the rice noodle carrier belt is greater than zero. The tray is fixedly connected between the first frame and the second frame. The rolling device includes a rolling motor, a cam, a rolling main gear, a rolling driven gear, and a rotating shaft. The cam and the rolling main gear are both connected to the output shaft of the rolling motor via a flat key. The rolling main gear and the rolling driven gear mesh with each other. The rolling driven gear is connected to the rotating shaft via a spline. One end of the rotating shaft is fixedly connected to one end of the rolling shaft, and the other end of the rolling shaft extends above the rice noodle carrier belt, the tray, or the rice noodle carrier belt. The other end of the rotating shaft is provided with a follower bearing. The surface of the cam is also provided with a groove, which is a closed spiral annular groove, and the follower bearing is fitted into the groove.

[0007] The winding device also includes a side housing, in which the winding motor, cam, winding main gear, winding driven gear and rotating shaft are all housed.

[0008] The winding device also includes a follower wheel and a guide sleeve. The follower wheel is connected to the output shaft of the winding motor via a flat key. A rotary bearing is also provided between the follower wheel and the side housing. The guide sleeve is fixedly connected to the follower wheel and a rolling bearing is provided inside the guide sleeve. The rotating shaft also passes through the rolling bearing.

[0009] The winding device also includes a gear ring, which is fixedly connected to the side housing, and the winding device engages with the gear ring.

[0010] The semi-dry rice noodle rolling equipment also includes a pair of protective plates and a pair of de-drying plates. The lower ends of the protective plates are fixed to the left and right sides of the tray, and the upper ends of the protective plates are fixed to the de-drying plates. The pair of protective plates and the pair of de-drying plates are respectively opposite to each other. At least a portion of the rotating shaft extends between the pair of protective plates, and the distance between the pair of de-drying plates is smaller than the distance between the pair of protective plates.

[0011] Both the strip powder conveyor and the agglomerate conveyor include a drive unit, which includes multiple left sprockets, multiple right sprockets, and multiple support shafts. The left and right sprockets are respectively mounted on the first frame or the second frame using rolling bearings. All left sprockets are connected together by a closed-loop left chain, and all right sprockets are connected together by a closed-loop right chain. The left and right sprockets correspond one-to-one and are coaxially fixed. The support shafts are fixed between the left and right chains, and the strip powder carrier belt or agglomerate carrier belt is wound around the outer surface of the support shafts.

[0012] The drive device further includes a conveying motor, a main conveying gear, and a driven conveying gear. The conveying motor is fixedly connected to the first frame or the second frame. The driven conveying gear is mounted on the first frame or the second frame using rolling bearings. The output shaft of the conveying motor is connected to the main conveying gear via a key. The main conveying gear and the driven conveying gear mesh with each other. The driven conveying gear is also coaxially fixedly connected to the main sprocket. The main sprocket is meshed with at least one left sprocket or at least one right sprocket via a transmission chain. The driven conveying gear is an incomplete gear whose teeth do not cover its outer circumference.

[0013] The strip powder conveyor also includes cutters and a cylindrical cutter roller. The cutter roller is mounted on the first frame using rolling bearings. One side of the cutter is fixed to the surface of the cutter roller, and the other side of the cutter extends outward along the radial direction of the cutter roller, serving as a cutting edge. The cutting edge is positioned above the strip powder carrier belt.

[0014] The first frame is also equipped with a cutting motor, and the output shaft of the cutting motor is connected to the cutter roller by a flat key.

[0015] The first frame is also fixedly connected to one end of the powder gathering guide plate, and the other end of the powder gathering guide plate extends above the powder carrier belt. There is a pair of powder gathering guide plates, which are opposite to each other. One end of the pair of powder gathering guide plates forms a powder gathering inlet, and the other end of the pair of powder gathering guide plates forms a powder gathering outlet. The width of the powder gathering outlet is smaller than the width of the powder gathering inlet.

[0016] The beneficial effects of this invention are as follows: Using the technical solution of this invention, strip-shaped rice noodles are conveyed via a rice noodle carrier belt. When the strip-shaped rice noodles are conveyed to the vicinity of the nearby rolling device, the rolling motor causes the rolling main gear and cam to rotate synchronously. The rolling main gear then drives the rolling follower gear to rotate, causing the rotating shaft to both revolve around the central axis of the rolling main gear and rotate on its own axis. Furthermore, because the follower bearing at the upper end of the rotating shaft is fitted into the cam groove, the rotating shaft can also slide up and down along its axial direction within one revolution cycle. When the rotating shaft revolves around the central axis of the rolling main gear, it brushes against the surface of the rice noodle carrier belt. The rice noodles are wound around the surface of the roll by the rotation of the shaft. When the rice noodles are moved above the rice noodle carrier along the revolution trajectory of the shaft, the shaft moves upward along its axis, causing the rolled rice noodles to fall onto the surface of the rice noodle carrier and continue to be conveyed forward. This makes it easy to pack the rolled rice noodles into paper bags or paper bowls. Compared with the prior art, this invention uses automated machinery to roll and shape the rice noodles, which improves the consistency of the appearance of the rolled rice noodles and makes the rice noodles rolled and shaped evenly in all parts. It has strong practicality, high degree of automation, and reduces the labor intensity of packaging workers. Attached Figure Description

[0017] Figure 1This is a top view of the present invention;

[0018] Figure 2 This is a front view of the rolling device of the present invention;

[0019] Figure 3 This is the present invention. Figure 2 A magnified view of a section at point I;

[0020] Figure 4 This is a top view of the powder conveyor of the present invention;

[0021] Figure 5 This is a front view of the powder conveyor of the present invention;

[0022] Figure 6 This is the present invention. Figure 5 A magnified view of section II in the middle.

[0023] In the diagram: 1-Powder conveyor, 2-Powder lump conveyor, 3-Lump winding device, 4-Pallet, 5-First frame, 6-Powder carrier belt, 7-Second frame, 8-Powder lump carrier belt, 9-Lump winding motor, 10-Cam, 11-Lump winding main gear, 12-Lump winding driven gear, 13-Shaft, 14-Spline, 15-Rolling shaft, 16-Follower bearing, 17-Groove, 18-Side housing, 19-Follower wheel, 20-Guide sleeve, 21- 22-Slewing bearing, 23-Gear ring, 24-Boss, 25-Guard plate, 26-Powder removal plate, 27-Drive device, 28-Left sprocket, 29-Rear spindle, 30-Left chain, 31-Right chain, 32-Conveyor motor, 33-Main conveyor gear, 34-Driver conveyor gear, 35-Main sprocket, 36-Drive chain, 37-Cut tool, 38-Cut roller, 39-Cut blade, 40-Cutting motor, 41-Powder collecting guide plate. Detailed Implementation

[0024] The technical solution of the present invention is further described below, but the scope of protection is not limited to what is described.

[0025] like Figures 1 to 6As shown, a semi-dried rice noodle rolling device of the present invention includes a rice noodle conveyor 1, a rice noodle conveyor 2, a rolling device 3, and a tray 4. The rice noodle conveyor 1 includes a first frame 5 and a rice noodle carrier belt 6. The rice noodle conveyor 2 includes a second frame 7 and a rice noodle carrier belt 8. The intersection angle between the length direction of the rice noodle carrier belt 6 and the length direction of the rice noodle carrier belt 8 is greater than zero. The tray 4 is fixedly connected between the first frame 5 and the second frame 7. The rolling device 3 includes a rolling motor 9, a cam 10, a rolling main gear 11, a rolling driven gear 12, and a rotating shaft 13. Both the main gear 10 and the rolling main gear 11 are connected to the output shaft of the rolling motor 9 via a flat key. The rolling main gear 11 meshes with the rolling driven gear 12. The rolling driven gear 12 is connected to the rotating shaft 13 via a spline 14. One end of the rotating shaft 13 is fixedly connected to one end of the rolling shaft 15. The other end of the rolling shaft 15 extends above the strip powder carrier belt 6, the tray 4, or the powder carrier belt 8. The other end of the rotating shaft 13 is provided with a follower bearing 16. The surface of the cam 10 is also provided with a groove 17. The groove 17 is a closed spiral ring. The follower bearing 16 is fitted inside the groove 17.

[0026] Using the technical solution of this invention, strip-shaped rice noodles are conveyed via a rice noodle carrier belt. When the strip-shaped rice noodles are conveyed to the vicinity of the nearby rolling device, the rolling motor causes the rolling main gear and cam to rotate synchronously. The rolling main gear then drives the rolling follower gear to rotate, causing the rotating shaft to both revolve around the central axis of the rolling main gear and rotate around its own central axis. In addition, since the follower bearing at the upper end of the rotating shaft is fitted into the cam groove, the rotating shaft can also slide up and down along its axial direction within one revolution cycle. When the rotating shaft revolves around the central axis of the rolling main gear, it sweeps across the surface of the rice noodle carrier belt and passes through the rotating shaft. The rotation of the rice noodles causes the strips to wrap around the surface of the roll. As the rice noodles are conveyed along the revolution trajectory of the roll to the top of the rice noodle carrier, the roll moves upward along its axis, causing the rolled rice noodles to fall onto the surface of the rice noodle carrier and continue to be conveyed forward. This makes it easy to pack the rolled rice noodles into paper bags or paper bowls. Compared with the prior art, this invention uses automated machinery to roll and shape the rice noodles, improving the consistency of the appearance of the rolled rice noodles and making the rice noodles evenly rolled in all parts. It has strong practicality, high degree of automation, and reduces the labor intensity of packaging workers.

[0027] Specifically, the rolling device 3 also includes a side-mounted housing 18, within which the rolling motor 9, cam 10, rolling main gear 11, rolling driven gear 12, and rotating shaft 13 are all housed. The rolling device 3 also includes a follower wheel 19 and a guide sleeve 20. The follower wheel 19 is connected to the output shaft of the rolling motor 9 via a key. A rotary bearing 21 is also provided between the follower wheel 19 and the side-mounted housing 18. The guide sleeve 20 is fixedly connected to the follower wheel 19, and a rolling bearing is provided within the guide sleeve 20, through which the rotating shaft 13 passes. The follower wheel 19 and the rotary bearing 21 provide reliable support and limit for the rotating shaft 13, which helps to make the revolution trajectory of the rotating shaft 13 around the central axis of the rolling main gear 11 more stable and consistent, thereby improving the consistency of the rice noodle roll's appearance.

[0028] Furthermore, the rolling device 3 also includes a gear ring 22, which is fixedly connected to the side housing 18. The rolling driven gear 12 meshes with the gear ring 22. The gear ring 22 is mainly used to position or limit the rolling driven gear 12. The ratio of the number of rolling shafts 15 to the number of rotating shafts 13 is 4:1. The ratio of the number of rolling driven gears 12 to the number of rolling main gears 11 is 4:1. The surface of the rolling shaft 15 is provided with several bosses 23. When the strip rice noodles are wound around the surface of the rolling shaft 15, the bosses 23 prevent the rice noodles from falling temporarily, and they can only be moved to the surface of the rice noodle carrier along the movement trajectory of the rotating shaft.

[0029] In addition, the semi-dry rice noodle rolling equipment also includes a pair of guard plates 24 and a pair of de-drying plates 25. The lower ends of the guard plates 24 are fixed to the left and right sides of the tray 4, and the upper ends of the guard plates 24 are fixed to the de-drying plates 25. The pair of guard plates 24 and the pair of de-drying plates 25 are respectively opposite to each other. At least a portion of the rotating shaft 13 extends into the space between the pair of guard plates 24, and the distance between the pair of de-drying plates 25 is smaller than the distance between the pair of guard plates 24. Using the technical solution of the present invention, when the rice noodles are conveyed to the top of the rice noodle carrier belt along the revolution trajectory of the rotating shaft, the follower bearing at the upper end of the rotating shaft is fitted into the cam groove, allowing the rotating shaft to slide up and down along its axial direction within one revolution cycle. When the rotating shaft slides upward, the rolled rice noodles collide with the de-drying plates 25. Under the reverse force of the de-drying plates 25, the rolled rice noodles fall onto the surface of the rice noodle carrier belt, thus continuing to be conveyed forward.

[0030] Specifically, the end of the de-drying plate 25 is bent in a radial direction away from the rotating shaft 13. This prevents the sharp edges of the de-drying plate 25 from cutting the rice noodles. Preferably, the guard plate 24 and the de-drying plate 25 are manufactured as a single piece.

[0031] Furthermore, both the rice noodle conveyor 1 and the rice noodle roll conveyor 2 include a drive unit 26. The drive unit 26 includes multiple left sprockets 27, multiple right sprockets 28, and multiple support shafts 29. The left sprockets 27 and right sprockets 28 are respectively mounted on the first frame 5 or the second frame 7 using rolling bearings. All left sprockets 27 are connected together by a closed-loop left chain 30, and all right sprockets 28 are connected together by a closed-loop right chain 31. The left sprockets 27 and right sprockets 28 correspond one-to-one and are coaxially fixed. The support shafts 29 are fixed between the left chain 30 and the right chain 31. The rice noodle carrier belt 6 or rice noodle roll carrier belt 8 is wound around the outer surface of the support shaft 29. By employing the technical solution of this invention, the multiple support shafts 29 support the rice noodle carrier belt 6 or rice noodle roll carrier belt 8, preventing local collapse of the rice noodle carrier belt 6 or rice noodle roll carrier belt 8, thus ensuring that the rice noodles or rice rolls are conveyed forward evenly.

[0032] In addition, the drive unit 26 also includes a conveying motor 32, a main conveying gear 33, and a driven conveying gear 34. The conveying motor 32 is fixedly connected to the first frame 5 or the second frame 7. The driven conveying gear 34 is mounted on the first frame 5 or the second frame 7 using rolling bearings. The output shaft of the conveying motor 32 is connected to the main conveying gear 33 via a key. The main conveying gear 33 and the driven conveying gear 34 mesh with each other. The driven conveying gear 34 is also coaxially fixedly connected to the main sprocket 35. The main sprocket 35 is meshed with at least one left sprocket 27 or at least one right sprocket 28 via a transmission chain 36. The driven conveying gear 34 is an incomplete gear whose teeth do not cover its outer circumference. This allows for the intermittent forward conveying of strip-shaped rice noodles or rolled rice noodles.

[0033] Specifically, the rice noodle conveyor 1 also includes a cutter 37 and a cylindrical cutter roller 38. The cutter roller 38 is mounted on the first frame 5 using rolling bearings. One side of the cutter 37 is fixed to the surface of the cutter roller 38, and the other side of the cutter 37 extends outward along the radial direction of the cutter roller 38. The other side of the cutter 37 serves as a cutting edge 39, which is arranged above the rice noodle carrier belt 6. When the rice noodles are intermittently conveyed, when the rice noodles are stationary relative to the first frame, the rice noodles are cut as the cutter rotates relative to the cutter roller, so that each cut rice noodle has a consistent length. Then, when it is rolled into a ball, the appearance of the ball is highly consistent.

[0034] In addition, a cutting motor 40 is installed on the first frame 5, and the output shaft of the cutting motor 40 is connected to the cutter roller 38 via a flat key. The first frame 5 is also fixed to one end of a powder-gathering guide plate 41, the other end of which extends above the powder carrier belt 6. There is a pair of powder-gathering guide plates 41, which are positioned opposite each other. One end of the pair forms a powder-gathering inlet, and the other end forms a powder-gathering outlet, the width of which is smaller than the width of the inlet. Preferably, the powder-gathering guide plate 41 is an arc-shaped thin plate. The powder carrier belt 6 can be replaced with wire mesh. The powder clump carrier belt 8 can be replaced with non-woven fabric. By adopting the technical solution of the present invention, during the forward conveying of the strip rice noodles along the strip rice noodle carrier belt 6, the powder gathering guide plate 41 causes the strip rice noodles to gather and stack together along the width direction of the strip rice noodle carrier belt 6, thereby making it easier for the rotating shaft and the winding shaft in the winding device to wind the strip rice noodles, and making it easier for the strip rice noodles to be wound on the winding shaft.

Claims

1. A semi-dry rice noodle rolling machine, characterized in that: The system includes a strip noodle conveyor (1), a dough noodle conveyor (2), a dough rolling device (3), and a tray (4). The strip noodle conveyor (1) includes a first frame (5) and a strip noodle carrier belt (6). The dough noodle conveyor (2) includes a second frame (7) and a dough noodle carrier belt (8). The intersection angle between the length direction of the strip noodle carrier belt (6) and the length direction of the dough noodle carrier belt (8) is greater than zero. The tray (4) is fixed between the first frame (5) and the second frame (7). The winding device (3) includes a winding motor (9), a cam (10), a winding main gear (11), a winding driven gear (12), and a rotating shaft (13). The cam (10) and the winding main gear (11) are both connected to the output shaft of the winding motor (9) via a key. The winding main gear (11) meshes with the winding driven gear (12). The winding driven gear (12) is connected to the rotating shaft (13) via a spline (14). One side of the rotating shaft (13)... One end of the shaft (13) is fixedly connected to one end of the spool (15), and the other end of the spool (15) extends above the strip powder carrier (6), tray (4) or powder clump carrier (8). The other end of the shaft (13) is provided with a follower bearing (16). The surface of the cam (10) is also provided with a groove (17). The groove (17) is a closed spiral ring. The follower bearing (16) is fitted into the groove (17). The surface of the spool (15) is provided with several bosses (23). The semi-dry rice noodle rolling equipment also includes a pair of guard plates (24) and a pair of de-drying plates (25). The lower end of the guard plate (24) is fixed to the left and right sides of the tray (4), and the upper end of the guard plate (24) is fixed to the de-drying plate (25). The pair of guard plates (24) and the pair of de-drying plates (25) are respectively opposite to each other. At least a part of the rotating shaft (13) extends into the space between the pair of guard plates (24), and the distance between the pair of de-drying plates (25) is smaller than the distance between the pair of guard plates (24).

2. The semi-dry rice noodle rolling equipment as described in claim 1, characterized in that: The winding device (3) also includes a side housing (18), in which the winding motor (9), cam (10), winding main gear (11), winding slave gear (12) and shaft (13) are all housed.

3. The semi-dry rice noodle rolling equipment as described in claim 2, characterized in that: The winding device (3) also includes a follower wheel (19) and a guide sleeve (20). The follower wheel (19) is connected to the output shaft of the winding motor (9) by a flat key. A rotary bearing (21) is also provided between the follower wheel (19) and the side housing (18). The guide sleeve (20) is fixedly connected to the follower wheel (19). A rolling bearing is provided inside the guide sleeve (20), and the rotating shaft (13) passes through the rolling bearing.

4. The semi-dry rice noodle rolling equipment as described in claim 2, characterized in that: The winding device (3) also includes a gear ring (22), which is fixedly connected to the side housing (18), and the winding device engages with the gear ring (22) via the gear (12).

5. The semi-dry rice noodle rolling equipment as described in claim 1, characterized in that: The strip powder conveyor (1) and the clump powder conveyor (2) both include a drive device (26). The drive device (26) includes multiple left sprockets (27), multiple right sprockets (28), and multiple support shafts (29). The left sprockets (27) and right sprockets (28) are respectively mounted on the first frame (5) or the second frame (7) using rolling bearings. All left sprockets (27) are meshed together by a closed ring left chain (30), and all right sprockets (28) are meshed together by a closed ring right chain (31). The left sprockets (27) and right sprockets (28) correspond one-to-one and are coaxially fixed. The support shafts (29) are fixed between the left chain (30) and the right chain (31). The strip powder carrier belt (6) or clump powder carrier belt (8) is wound around the outer surface of the support shaft (29).

6. The semi-dry rice noodle rolling equipment as described in claim 5, characterized in that: The drive device (26) further includes a conveyor motor (32), a main conveyor gear (33), and a driven conveyor gear (34). The conveyor motor (32) is fixedly connected to the first frame (5) or the second frame (7). The driven conveyor gear (34) is mounted on the first frame (5) or the second frame (7) using rolling bearings. The output shaft of the conveyor motor (32) is connected to the main conveyor gear (33) by a key. The main conveyor gear (33) and the driven conveyor gear (34) mesh with each other. The driven conveyor gear (34) is also coaxially fixedly connected to the main sprocket (35). The main sprocket (35) is meshed with at least one left sprocket (27) or at least one right sprocket (28) by a transmission chain (36). The driven conveyor gear (34) is an incomplete gear whose teeth do not cover its outer circumference.

7. A semi-dry rice noodle rolling device as described in claim 1 or 5, characterized in that: The strip powder conveyor (1) also includes a cutter (37) and a cylindrical cutter roller (38). The cutter roller (38) is mounted on the first frame (5) using rolling bearings. One side of the cutter (37) is fixed to the surface of the cutter roller (38), and the other side of the cutter (37) extends outward along the radial direction of the cutter roller (38). The other side of the cutter (37) serves as a cutting edge (39), which is arranged above the strip powder carrier belt (6).

8. The semi-dry rice noodle rolling equipment as described in claim 7, characterized in that: The first frame (5) is also equipped with a cutting motor (40), and the output shaft of the cutting motor (40) is connected to the cutter roller (38) by a flat key.

9. A semi-dry rice noodle rolling device as described in claim 1 or 5, characterized in that: The first frame (5) is also fixed to one end of the powder gathering guide plate (41), and the other end of the powder gathering guide plate (41) extends above the powder carrier belt (6). There is a pair of powder gathering guide plates (41), which are opposite to each other. One end of the pair of powder gathering guide plates (41) forms a powder gathering inlet, and the other end of the pair of powder gathering guide plates (41) forms a powder gathering outlet. The width of the powder gathering outlet is smaller than the width of the powder gathering inlet.

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