Knife-cutting steamed bun making machine

Abstract

The utility model discloses a steamed bun cutting machine. According to the technical scheme, the steamed bun cutting machine comprises a conveying belt; a dough pressing mechanism; a dough rolling roller and a cutting mechanism; the dough pressing mechanism comprises a dough pressing frame; a lower pressing roller; an upper compression roller; the two sliding blocks are located at the two ends of the upper pressing roller respectively, the two ends of the upper pressing roller are rotationally connected to the two sliding blocks respectively, and the sliding blocks can slide up and down on the noodle pressing frame; the bottom of each sliding block is provided with one elastic piece; the adjusting shaft is arranged above the lower pressing roller and is rotationally connected to the dough pressing frame; the two cams are arranged on the adjusting shaft, and the two cams are located at the tops of the two sliding blocks correspondingly and make contact with the tops of the sliding blocks; and a first servo motor. Through the arrangement of a cam and a first servo motor, the distance between the upper pressing roller and the lower pressing roller can be automatically controlled and adjusted, so that the thickness of the pressed wrapper is adjusted, manual intervention is not needed, and the operation is more convenient and faster.

Description

Technical Field

[0001] The utility model relates to the technical field of steamed bun production, and more specifically, to a knife-cut steamed bun machine. Background Art

[0002] Steamed buns are one of the traditional Chinese noodles. They are a food made by steaming fermented noodles. Steamed buns are made from wheat flour as the main ingredient and are one of the daily staple foods of Chinese people.

[0003] In the traditional production of steamed buns, most of them are produced manually, which not only cannot ensure the uniformity of the quality of the steamed buns, but also has the problem of being time-consuming and labor-intensive. The emergence of steamed bun machines has solved the problems existing in the manual production of steamed buns. The steamed bun machine presses the dough into dough skin through a dough pressing mechanism, and then rolls the dough skin into strips through a dough rolling roller. The strips of dough are then cut into segments to form steamed buns. For existing steamed bun machines, the thickness of the dough skin pressed by the dough pressing mechanism is not adjustable. Even if it is adjustable, it needs to be adjusted manually, which is inconvenient to operate. Utility Model Content

[0004] In response to the shortcomings of the existing technology, the purpose of the present invention is to provide a knife-cut steamed bun machine, which can automatically control and adjust the distance between the upper pressing roller and the lower pressing roller through the setting of a cam and a first servo motor, thereby adjusting the thickness of the pressed dough without manual intervention, making operation more convenient and quick.

[0005] To achieve the above-mentioned object, the utility model provides the following technical solutions: a knife-cut steamed bun machine, comprising a conveyor belt, wherein the conveyor belt is transported in a horizontal direction;

[0006] A dough pressing mechanism is provided at the feeding end of the conveyor belt and is used to squeeze the dough to a preset thickness and then feed it to the feeding end of the conveyor belt;

[0007] A rolling roller, used to roll the dough into strips;

[0008] and a knife cutting mechanism for cutting the noodles rolled into strips into segments;

[0009] The noodle pressing mechanism includes a noodle pressing frame, which is arranged at the feeding end of the conveyor belt;

[0010] A lower pressing roller, the lower pressing roller being rotatably connected to the noodle pressing frame;

[0011] an upper pressing roller, the upper pressing roller being arranged above the lower pressing roller;

[0012] Slide blocks, two of which are provided and are located at both ends of the upper pressing roller, respectively. The two ends of the upper pressing roller are rotatably connected to the two slide blocks, and the slide blocks can slide up and down on the noodle pressing frame;

[0013] An elastic member is provided at the bottom of each slider, and the elastic member provides an upward elastic force to the slider;

[0014] An adjusting shaft, the adjusting shaft being arranged above the lower pressing roller and rotatably connected to the noodle pressing frame;

[0015] Cams, two of which are provided on the adjustment shaft, the two cams being located on the tops of the two sliders and in contact with the tops of the sliders;

[0016] and a first servo motor, wherein the first servo motor is drivingly connected to the adjustment shaft.

[0017] The utility model is further configured as follows: the knife cutting mechanism includes a knife holder,

[0018] A sliding rod capable of sliding vertically on the tool holder;

[0019] A cutter, the cutter being fixedly connected to the bottom of the sliding rod;

[0020] A rocker arm, one end of which is rotatably connected to the tool holder;

[0021] a connecting rod, one end of the connecting rod being rotatably connected to the other end of the rocker arm, and the other end of the connecting rod being rotatably connected to the top end of the sliding rod;

[0022] and a second servo motor, wherein the second servo motor is fixedly connected to the tool holder and is transmission-connected to the rocker arm.

[0023] The utility model is further configured as follows: the first servo motor is connected to the adjusting shaft through a worm gear.

[0024] The utility model is further configured as follows: it also includes an oil brushing mechanism, the oil brushing mechanism is arranged between the noodle pressing mechanism and the noodle rolling roller;

[0025] The oil brushing mechanism includes an oil dripping pipe, which is vertically arranged, and an oil dripping hole is provided at a position near the bottom of the oil dripping pipe near the side of the pressing mechanism;

[0026] And an oil brushing plate, which is fixedly connected to the bottom of the oil dripping pipe and is fixedly connected to a brush for evenly spreading oil on the dough.

[0027] The utility model is further configured as follows: the oil brushing mechanism further includes an oil pot, the oil pot is arranged above the conveyor belt, and the oil pot is used to supply oil to the oil dripping pipe;

[0028] and a motor, wherein the motor is fixedly connected to the top of the oil dripping pipe to drive the oil dripping pipe to rotate.

[0029] The utility model is further configured as follows: it also includes a material spreading mechanism, and the material spreading mechanism is located between the oil brushing mechanism and the rolling roller;

[0030] The spreading mechanism includes a seasoning spreading hopper, which is used to spread seasoning onto the surface of the dough;

[0031] And a chopped green onion scattering hopper, which is used for scattering chopped green onions onto the surface of the dough.

[0032] The utility model is further configured as follows: a plurality of spreading holes are provided at the bottom of the seasoning spreading hopper, a first spreading roller is rotatably connected to the inside of the seasoning spreading hopper, and a plurality of bristles are fixedly connected to the outside of the first spreading roller so that the seasoning is evenly spread to the bottom of the seasoning spreading hopper through the bristles when the first spreading roller rotates;

[0033] A second spreading roller is rotatably connected to the chopped green onion spreading hopper, the length direction of the second spreading roller is parallel to the width direction of the conveyor belt and one side of the bottom extends out from the bottom of the chopped green onion spreading hopper, and a plurality of spreading grooves are arranged outside the second spreading roller along the length direction of the second spreading roller. The spreading grooves are evenly arranged around the axis of the second spreading roller so that the chopped green onions in the chopped green onion spreading hopper can be sprinkled onto the surface of the dough through the spreading grooves during the rotation of the second spreading roller.

[0034] The utility model is further configured as follows: the spreading mechanism also includes a supporting shell, and the seasoning spreading hopper and the chopped green onion spreading hopper are both fixedly connected to the supporting shell.

[0035] The utility model is further configured as follows: the axis direction of the rolling roller is horizontal and one end of the rolling roller is tilted toward the direction close to the spreading mechanism.

[0036] The utility model is further configured to include: a shaping mechanism, which is arranged at one end of the rolling roller away from the spreading mechanism;

[0037] The shaping mechanism includes shaping rollers, the axes of which are vertically arranged and two groups of shaping rollers are provided. The two groups of shaping rollers are arranged along the width direction of the conveyor belt, and multiple shaping rollers in the same group are arranged along the transmission direction of the conveyor belt.

[0038] In summary, the present invention has the following beneficial effects compared to the prior art:

[0039] 1. The utility model can automatically control and adjust the distance between the upper pressing roller and the lower pressing roller through the setting of the cam and the first servo motor, thereby adjusting the thickness of the pressed dough without manual intervention, making the operation more convenient and quick;

[0040] 2. The utility model can automatically adjust the frequency of the cutter through the setting of the rocker arm and the second servo motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 is a schematic diagram of the overall structure of the embodiment;

[0042] Figure 2 for Figure 1 A magnified schematic diagram of part A;

[0043] Figure 3 for Figure 1 An enlarged schematic diagram of part B;

[0044] Figure 4 for Figure 1 An enlarged schematic diagram of part C;

[0045] Figure 5 A schematic diagram of an oil dripping tube is shown in the embodiment;

[0046] Figure 6 A schematic diagram of a slider is shown in the embodiment;

[0047] Figure 7 Schematic diagram of the noodle pressing mechanism of the embodiment;

[0048] Figure 8 for Figure 7 An enlarged schematic diagram of part D;

[0049] Figure 9 Schematic diagram of the knife cutting mechanism of the embodiment;

[0050] Figure 10 Schematic diagram of the spreading hopper of the embodiment.

[0051] In the figure: 1. Conveyor belt; 2. Dough pressing mechanism; 21. Dough pressing frame; 22. Lower pressing roller; 23. Upper pressing roller; 24. Slider; 241. Spring; 25. Adjusting shaft; 26. Cam; 3. Oil brushing mechanism; 31. Oil dripping pipe; 311. Oil dripping hole; 32. Oil brushing plate; 33. Oil pot; 34. Motor; 4. Spreading mechanism; 41. Housing; 42. Seasoning spreading hopper; 421. First spreading roller; 43. Scallion spreading hopper; 431. Second spreading roller; 5. Dough rolling roller; 6. Knife cutting mechanism; 61. Cutter; 62. Sliding rod; 63. Connecting rod; 64. Rocker arm; 7. Shaping mechanism; 71. Shaping roller. DETAILED DESCRIPTION

[0052] In order to enable those skilled in the art to better understand the technical solution of the present invention, the following is a clear and complete description of the technical solution of the present invention in conjunction with the drawings of the present invention. Based on the embodiments in this application, other similar embodiments obtained by ordinary technicians in this field without making creative work should fall within the scope of protection of this application. In addition, the directional terms mentioned in the following embodiments, such as "up", "down", "left", "right", etc., are only referenced to the directions of the drawings. Therefore, the directional terms used are used to illustrate rather than limit the invention.

[0053] The present invention will be further described below with reference to the accompanying drawings and preferred embodiments.

[0054] Example: A knife-cut steamed bun machine, see attached Figure 1 -Attached Figure 10 , including a conveyor belt 1, a noodle pressing mechanism 2, an oiling mechanism 3, a sprinkling mechanism 4, a noodle rolling roller 5 and a knife cutting mechanism 6, the conveyor belt 1 is transported in the horizontal direction; the noodle pressing mechanism 2 is arranged at the feeding end of the conveyor belt 1, and the noodle pressing mechanism 2 is used to squeeze the dough to a preset thickness and then feed it to the feeding end of the conveyor belt 1; the oiling mechanism 3 is used to apply oil on the dough on the top of the conveyor belt 1; the sprinkling mechanism 4 is arranged on the side of the oiling mechanism 3 away from the noodle pressing mechanism 2, and the sprinkling mechanism 4 is used to sprinkle materials on the surface of the dough, and the materials sprinkled here include chopped green onions and seasoning powder; the noodle rolling roller 5 is arranged on the side of the sprinkling mechanism 4 away from the oiling mechanism 3 to roll the dough into strips after sprinkling; the knife cutting mechanism 6 is arranged on the side of the noodle rolling roller 5 away from the sprinkling mechanism 4, and the knife cutting mechanism 6 cuts the rolled noodles into segments.

[0055] When in use, the dough is conveyed to the dough pressing mechanism 2, and the dough is further squeezed by the dough pressing mechanism 2 to obtain a preset thickness that meets production requirements. The dough then enters the conveyor belt 1 and is conveyed forward on the conveyor belt 1. During the conveying process, it first passes through the oil brushing mechanism 3, and oil is brushed on the surface of the dough by the oil brushing mechanism 3. The dough that has passed the oil brushing mechanism 3 is conveyed to the material spreading mechanism 4 through the conveyor belt 1, and the material is sprinkled on the surface of the dough that has passed the material spreading mechanism 4. Then the dough enters the rolling roller 5, and the rotation of the rolling roller 5 drives the dough to be rolled together to form strips. The strips of dough continue to enter the knife cutting mechanism 6, and the knife cutting mechanism 6 cuts the strips of dough into segments to form flower rolls. When steamed buns need to be made, the production of steamed buns can be completed by simply closing the material spreading mechanism 4 and the oil brushing mechanism 3.

[0056] Specifically, the noodle pressing mechanism 2 includes a noodle pressing frame 21, a lower pressing roller 22, an upper pressing roller 23, a slider 24, an elastic member, an adjustment shaft 25, a cam 26, and a first servo motor. The noodle pressing frame 21 is arranged at the feed end of the conveyor belt 1; the lower pressing roller 22 is rotatably connected to the noodle pressing frame 21; the upper pressing roller 23 is arranged above the lower pressing roller 22; two sliders 24 are provided and are respectively located at both ends of the upper pressing roller 23. The two ends of the upper pressing roller 23 are respectively rotatably connected to the two sliders 24, and the sliders 24 can slide up and down on the noodle pressing frame 21; each slider 24 is provided with an elastic member at the bottom, which provides an upward elastic force to the slider 24; the adjustment shaft 25 is arranged above the lower pressing roller 22 and rotatably connected to the noodle pressing frame 21; two cams 26 are provided and fixedly connected to the adjustment shaft 25, and the two cams 26 are respectively located at the top of the two sliders 24 and contact the top of the sliders 24; the first servo motor is in transmission connection with the adjustment shaft 25. Specifically, the elastic member is configured as a spring 241.

[0057] By setting the cam 26 and the first servo motor, the distance between the upper pressing roller 23 and the lower pressing roller 22 can be automatically adjusted through program control of the servo motor, thereby adjusting the thickness of the pressed dough without manual intervention, making the operation more convenient and quick.

[0058] Specifically, the first servo motor is connected to the adjustment shaft 25 via a worm gear.

[0059] Specifically, the knife cutting mechanism 6 includes a knife holder, a sliding rod 62, a cutter 61, a rocker arm 64, a connecting rod 63, and a second servo motor. The sliding rod 62 can slide vertically on the knife holder; the cutter 61 is fixedly connected to the bottom of the sliding rod 62; one end of the rocker arm 64 is rotatably connected to the knife holder; one end of the connecting rod 63 is rotatably connected to the other end of the rocker arm 64, and the other end of the connecting rod 63 is rotatably connected to the top end of the sliding rod 62; the second servo motor is fixedly connected to the knife holder and is in transmission connection with the rocker arm 64. The second servo motor allows the frequency of the cutter 61 to be automatically adjusted through program control of the second servo motor.

[0060] Specifically, the oil brushing mechanism 3 includes an oil dripping tube 31 and an oil brushing plate 32. The oil dripping tube 31 is vertically arranged, and an oil dripping hole 311 is provided near the bottom of the oil dripping tube 31 close to the noodle pressing mechanism 2; the oil brushing plate 32 is fixedly connected to the bottom of the oil dripping tube 31, and a brush for evenly applying oil on the dough is fixedly connected to the oil brushing plate 32.

[0061] The oil dripping pipe 31 drips oil onto the dough through the oil dripping hole 311 , and the oil dripping onto the dough is evenly brushed on the dough by the oil brushing plate 32 .

[0062] Specifically, the oil brushing mechanism 3 further includes an oil pot 33 and a motor 34. The oil pot 33 is arranged above the conveyor belt 1; the motor 34 is fixedly connected to the top of the oil dripping pipe 31 to drive the oil dripping pipe 31 to rotate.

[0063] The oil pot 33 stores oil, which is transported from the oil pot 33 to the oil dripping pipe 31 and then drips through the oil dripping hole 311. The motor 34 then drives the oil brushing plate 32 to rotate so as to evenly spread the oil on the surface of the dough.

[0064] Specifically, the spreading mechanism 4 includes a seasoning spreading hopper 42 and a chopped green onion spreading hopper 43. The seasoning spreading hopper 42 is used to spread seasoning on the surface of the dough, and the chopped green onion spreading hopper 43 is used to spread chopped green onions on the surface of the dough.

[0065] Specifically, a plurality of spreading holes are provided at the bottom of the seasoning spreading hopper 42, and a first spreading roller 421 is rotatably connected to the inside of the seasoning spreading hopper 42, and a plurality of bristles are fixedly connected to the outside of the first spreading roller 421 so that the seasoning can be evenly spread to the bottom of the seasoning spreading hopper 42 through the bristles when the first spreading roller 421 rotates, so that the seasoning can be evenly spread to the surface of the dough through the spreading holes.

[0066] The chopped green onion spreading hopper 43 is rotatably connected to a second spreading roller 431, the length direction of the second spreading roller 431 is parallel to the width direction of the conveyor belt 1 and one side of the bottom extends from the bottom of the chopped green onion spreading hopper 43, and a plurality of spreading grooves are arranged outside the second spreading roller 431 along the length direction of the second spreading roller 431. The spreading grooves are evenly arranged around the axis of the second spreading roller 431 so that the chopped green onions in the chopped green onion spreading hopper 43 can be sprinkled onto the surface of the dough through the spreading grooves during the rotation of the second spreading roller 431.

[0067] Specifically, the spreading mechanism 4 further includes a supporting shell 41 , and the seasoning spreading hopper 42 and the chopped green onion spreading hopper 43 are both fixedly connected to the supporting shell 41 .

[0068] Specifically, the axis of the rolling roller 5 is horizontal, and one end of the rolling roller 5 is tilted toward the spreading mechanism 4. The rolling roller 5 rotates upward toward the side of the dough sheet, pushing the dough sheet to gradually wind upward toward the other side of the dough sheet, forming a strip. Specifically, the rolling roller 5 is powered by a third servo motor.

[0069] Specifically, this embodiment also includes a shaping mechanism 7, which is arranged at one end of the rolling roller away from the spreading mechanism 4; the shaping mechanism 7 includes a shaping roller 71, the axis of the shaping roller 71 is vertically arranged and there are two groups of shaping rollers 71, the two groups of shaping rollers 71 are arranged along the width direction of the conveyor belt 1, and the multiple shaping rollers 71 in the same group are arranged along the transmission direction of the conveyor belt 1.

[0070] By providing two sets of shaping rollers 71 , both sides of the strip surface can be shaped.

[0071] In some embodiments, the control program directly controls the first servo motor of the dough pressing mechanism, the second servo motor of the knife cutting mechanism, the oil brushing mechanism, the material spreading mechanism, the third servo motor that provides power to the dough rolling roller, and the conveyor belt, so that the parameters of the thickness of the dough sheet, the transmission speed of the conveyor belt, the rotation speed of the dough rolling roller, and the cutting frequency of the cutter can be directly controlled through the program; by integrating the control program into the control panel, it is convenient to pre-store various parameters for making steamed buns in the program, and realize one-click switching of different specifications.

[0072] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, certain improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A knife-cut steamed bun machine, characterized by: It comprises a conveyor belt (1), wherein the conveyor belt (1) is transported in a horizontal direction; A dough pressing mechanism (2), the dough pressing mechanism (2) being arranged at the feeding end of the conveyor belt (1), and the dough pressing mechanism (2) being used to press the dough to a preset thickness and then feed it to the feeding end of the conveyor belt (1); A rolling roller (5), wherein the rolling roller (5) is used to roll the dough into strips; and a knife cutting mechanism (6), wherein the knife cutting mechanism (6) cuts the noodles rolled into strips into segments; The noodle pressing mechanism (2) comprises a noodle pressing frame (21), and the noodle pressing frame (21) is arranged at the feeding end of the conveyor belt (1); A lower pressing roller (22), wherein the lower pressing roller (22) is rotatably connected to the noodle pressing frame (21); an upper pressing roller (23), wherein the upper pressing roller (23) is arranged above the lower pressing roller (22); Slide blocks (24), wherein two slide blocks (24) are provided and are respectively located at both ends of the upper pressing roller (23), and both ends of the upper pressing roller (23) are rotatably connected to the two slide blocks (24), and the slide blocks (24) can slide up and down on the noodle pressing frame (21); An elastic member is provided at the bottom of each slider (24), and the elastic member provides an upward elastic force to the slider (24); An adjusting shaft (25), the adjusting shaft (25) being arranged above the lower pressing roller (22) and being rotatably connected to the noodle pressing frame (21); Cams (26), two cams (26) are provided and are arranged on the adjustment shaft (25), and the two cams (26) are respectively located on the tops of the two sliders (24) and are in contact with the tops of the sliders (24); and a first servo motor, wherein the first servo motor is in transmission connection with the adjustment shaft (25).

2. The knife-cut steamed bun machine according to claim 1, characterized in that: The knife cutting mechanism (6) comprises a knife holder, A sliding rod (62), the sliding rod (62) can slide in a vertical direction on the tool holder; A cutter (61), wherein the cutter (61) is fixedly connected to the bottom of the sliding rod (62); A rocker arm (64), one end of which is rotatably connected to the tool holder; A connecting rod (63), one end of the connecting rod (63) is rotatably connected to the other end of the rocker arm (64), and the other end of the connecting rod (63) is rotatably connected to the top end of the sliding rod (62); and a second servo motor, wherein the second servo motor is fixedly connected to the tool holder and is transmission-connected to the rocker arm (64).

3. The knife-cut steamed bun machine according to claim 2, characterized in that: The first servo motor is connected to the adjustment shaft (25) via a worm gear.

4. The knife-cut steamed bun machine according to claim 3, characterized in that: It also includes an oil brushing mechanism (3), which is arranged between the noodle pressing mechanism (2) and the noodle rolling roller (5); The oil brushing mechanism (3) comprises an oil dripping pipe (31), the oil dripping pipe (31) is vertically arranged, and an oil dripping hole (311) is arranged at a position close to the bottom of one side of the oil dripping pipe (31) close to the noodle pressing mechanism (2); and an oil brushing plate (32), wherein the oil brushing plate (32) is fixedly connected to the bottom of the oil dripping pipe (31), and a brush for evenly spreading oil on the dough is fixedly connected to the oil brushing plate (32).

5. The knife-cut steamed bun machine according to claim 4, characterized in that: The oil brushing mechanism (3) further comprises an oil pot (33), the oil pot (33) being arranged above the conveyor belt (1), and the oil pot (33) being used to supply oil to the oil dripping pipe (31); and a motor (34), wherein the motor (34) is fixedly connected to the top of the oil dripping pipe (31) to drive the oil dripping pipe (31) to rotate.

6. The knife-cut steamed bun machine according to claim 5, characterized in that: It also includes a material spreading mechanism (4), which is located between the oil brushing mechanism (3) and the winding roller (5); The spreading mechanism (4) includes a seasoning spreading hopper (42), and the seasoning spreading hopper (42) is used to spread seasoning on the surface of the dough; and a chopped green onion scattering hopper (43), wherein the chopped green onion scattering hopper (43) is used for scattering chopped green onions onto the surface of the dough.

7. The knife-cut steamed bun machine according to claim 6, characterized in that: The bottom of the seasoning spreading hopper (42) is provided with a plurality of spreading holes, a first spreading roller (421) is rotatably connected inside the seasoning spreading hopper (42), and a plurality of bristles are fixedly connected to the outside of the first spreading roller (421) so that the seasoning is evenly spread to the bottom of the seasoning spreading hopper (42) through the bristles when the first spreading roller (421) rotates; A second spreading roller (431) is rotatably connected to the chopped green onion spreading hopper (43), the length direction of the second spreading roller (431) is parallel to the width direction of the conveyor belt (1), and one side of the bottom extends from the bottom of the chopped green onion spreading hopper (43), and a plurality of spreading troughs are arranged along the length direction of the second spreading roller (431) outside the second spreading roller (431), and the spreading troughs are evenly arranged around the axis of the second spreading roller (431) so that the chopped green onions in the chopped green onion spreading hopper (43) can be spread onto the surface of the dough through the spreading troughs during the rotation of the second spreading roller (431).

8. The knife-cut steamed bun machine according to claim 7, characterized in that: The spreading mechanism (4) further comprises a supporting shell (41), and the seasoning spreading hopper (42) and the chopped green onion spreading hopper (43) are both fixedly connected to the supporting shell (41).

9. The knife-cut steamed bun machine according to claim 8, characterized in that: The axis direction of the rolling roller (5) is horizontal, and one end of the rolling roller (5) is tilted toward a direction close to the spreading mechanism (4).

10. The knife-cut steamed bun machine according to claim 9, characterized in that: It also includes a shaping mechanism (7), which is arranged at one end of the rolling roller (5) away from the spreading mechanism (4); The shaping mechanism (7) comprises shaping rollers (71), the axes of the shaping rollers (71) being arranged vertically and being provided in two groups, the two groups of shaping rollers (71) being arranged along the width direction of the conveyor belt (1), and the multiple shaping rollers (71) in the same group being arranged along the transmission direction of the conveyor belt (1).

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