Full-automatic shredded cake pressing machine
By optimizing the transmission and cutting device in the hand-grabbing cake press, and combining with reasonable mechanical structure design, the problems of unstable transmission and inaccurate cutting in existing equipment are solved, efficient and stable automated production is achieved, and product quality and production efficiency are improved.
Patent Information
- Application Number
- CN202421479927.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-26
- Publication Date
- 2025-04-29
- Estimated Expiration
- 2034-06-26
AI Technical Summary
The existing automated hand-grabbing cake production equipment has problems such as unstable conveying of bag films, inaccurate cutting, and uneven pressing, which affects product quality, and has complex equipment structure, high operation difficulty and high maintenance costs.
A fully automatic hand-grabbing cake press is designed to ensure stable transmission and accurate cutting of the rolled bag film by optimizing the conveying device and cutting device; a reasonable design of the compression spring and the conductive motor are used to improve the transmission stability and operation ease.
It realizes efficient, stable and automated production of hand-grabbing cakes, improves production efficiency and product quality, reduces production costs, and simplifies equipment operation and maintenance.
Smart Images

Figure CN222803751U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of food processing, in particular to a full-automatic hand-held pancake pressing machine. Background Art
[0002] As a snack with unique flavor and crispy texture, hand-pulled pancake is popular all over the world. The production process of traditional hand-pulled pancake usually includes multiple steps such as dough mixing, rolling, oiling, folding, frying and baking, which requires a lot of manual operation. It is not only time-consuming and labor-intensive, but also has low production efficiency and is difficult to meet the needs of mass production. With the acceleration of the pace of modern life and the development of the catering industry, there is an urgent need for a device that can automatically produce hand-pulled pancakes to improve production efficiency, stabilize product quality and reduce labor costs.
[0003] During the use of existing automated pancake production equipment, there are usually problems such as unstable film transmission, inaccurate cutting, and uneven pressing, which affect the final quality of the pancake. In addition, the existing equipment has a complex structure, high operation difficulty, and high maintenance and servicing costs, which further restricts its application and promotion.
[0004] In view of the above problems, the utility model provides a fully automatic hand-pulled pancake pressing machine, which ensures the stable transmission and accurate cutting of the roll bag film through optimized conveying device and cutting device; through reasonably designed compression spring and material guide motor, the transmission stability and ease of operation of the equipment are improved, thereby realizing efficient and stable automatic production of hand-pulled pancakes, improving production efficiency and product quality, reducing production costs, and meeting market demand. Utility Model Content
[0005] In view of the above-mentioned deficiencies existing in the prior art, the purpose of the utility model is to provide a cake press with stable operation, simple operation, low maintenance cost, high production efficiency and high product quality.
[0006] The technical solution adopted by the utility model to achieve the above-mentioned purpose is: a fully automatic hand-grabbed pancake pressing machine, including a machine platform, a first film rolling frame, a second film rolling frame, a film guide roller, a dough guiding device, a bag film guiding device, a pancake pressing device, a cutting device, and a conveying device. A material guide trough is provided at the upper end of the machine platform, and the material guide trough is used for conveying bag film and dough. A film guide roller is rotatably connected to the machine platform at one end of the material guide trough, and the end of the machine platform below the film guide roller is fixedly connected to the first film rolling frame, a film roll bag is installed on the first film rolling frame, and the film roll bag is transmission-connected to the material guide trough after passing the film guide roller. A dough guiding device is fixedly connected to the machine platform on one side of the film guide roller, and the dough guiding device is used to guide the dough to the film roll bag on the material guide trough. A second film roll rack is fixedly connected to the machine platform on one side, and a film roll bag is also installed on the second film roll rack. Bag film guiding devices are fixedly connected to both sides of the inner wall of the material guide trough on one side below the second film roll rack, and the bag film guiding device is used to convey the film roll bags of the second film roll rack so that the film roll bags cover the film roll bags on the lower layer, and the dough is set between the two layers of film roll bags. A cake pressing device is fixedly connected to the machine platform on one side of the second film roll rack, and the cake pressing device is used to press the dough into cakes. A cutting device is fixedly connected to one side of the cake pressing device, and the cutting device is used to cut the film roll bags on both sides of the cakes. A conveying device is provided at the bottom of the material guide trough below the cake pressing device, and the conveying device is used to convey the double-layer film roll bags.
[0007] In one of the embodiments, the dough guiding device includes a material guide pipe, a material guide hopper, a transverse frame, and a bent support rod. A transverse frame is fixedly connected to the machine platform on one side of the second film rolling frame, one side of the middle part of the transverse frame is fixedly connected to the lower end of the material guide pipe, the upper end of the material guide pipe is fixedly connected to the material guide hopper, and both sides of the middle part of the material guide pipe are respectively fixedly connected to bent support rods, and the other ends of the bent support rods are respectively fixedly connected to the upper edge of the machine platform.
[0008] In one embodiment, the bag film guiding device includes a mounting block, a first guide roller, and a film guiding motor. The inner walls of the material guiding trough are fixedly connected with mounting blocks on both sides, and two groups of contacting first guide rollers are rotatably connected on opposite sides of the mounting block, one group of the first guide rollers is connected to the film guiding motor, and the film guiding motor is fixedly connected in the mounting block.
[0009] In one embodiment, the cake pressing device includes a U-shaped groove frame, a pneumatic telescopic cylinder, and a cake pressing plate. The upper end of the machine platform is fixedly connected to the U-shaped groove frame, the middle part of the upper end of the U-shaped groove frame is fixedly connected to the pneumatic telescopic cylinder, and the top rod of the pneumatic telescopic cylinder passes through the U-shaped groove frame and is fixedly connected to the cake pressing plate.
[0010] In one embodiment, the cutting device includes a sliding guide rail, a sliding guide block, a mounting plate, a shearing knife, an electric telescopic rod, and a fixed frame. The two ends of the U-shaped groove frame are fixedly connected with sliding guide rails, and the sliding guide blocks are slidably connected to the sliding guide rails. The mounting plates are fixedly connected between the sliding guide blocks, and the side of the mounting plate is fixedly connected with the shearing knife. The bottom of the guide groove below the shearing knife is embedded with a shearing block, and the upper end of the shearing block is provided with a shearing groove. The blade of the lower end of the shearing knife is embedded with the shearing groove. The middle part of the upper end of the mounting plate is fixedly connected to the end of the top rod of the electric telescopic rod, and the main body of the electric telescopic rod is fixedly connected with a fixed frame, and the fixed frame is fixedly connected to one side of the upper end of the U-shaped groove frame.
[0011] In one of the embodiments, the conveying device includes a material guide roller, a second guide roller wheel, a movable block, a slide frame, a slide frame cylinder, and a compression spring. A roller shaft groove is opened at the bottom of the material guide groove on one side of the cutting device, and a material guide roller is rotatably connected in the roller shaft groove. The inner side walls of the material guide groove on both sides of the material guide roller are fixedly connected, and the slide frame is slidably connected with the slide frame. The lower end of the slide frame protrudes out of the slide frame and is fixedly connected to the movable block. The sliding sleeve in the slide frame is connected with a compression spring, and one end of the compression spring passes through the slide frame and is in contact with the inner side surface of the slide frame. The movable block is fixedly connected with a material guide motor, and the end of the rotating shaft of the material guide motor is fixedly connected with the second guide roller, and the second guide roller is respectively in contact with the two ends of the material guide roller.
[0012] Beneficial effects of the utility model:
[0013] Improved transmission stability: By setting a combination of the guide roller, the second guide roller, the movable block, the chute frame, the chute cylinder and the clamping spring, it is ensured that the roll film can move stably during the transmission process. The downward force provided by the clamping spring makes the second guide roller press tightly against the guide roller, thereby greatly improving the stability of the roll film transmission and avoiding the problem of roll film deviation or wrinkles caused by unstable transmission;
[0014] Improved cutting accuracy: The cutting device of the utility model is exquisitely designed and can accurately cut the roll bag film, which improves the standardization of the product and helps to improve production efficiency;
[0015] Easy to operate: The reasonable mechanical structure design simplifies the operation process of the equipment. The linkage design of the material guide motor and the second guide roller enables the equipment to automatically complete the transmission and pressing of the roll film after starting, which reduces the labor intensity of the operator and improves the convenience of operation.
[0016] Reduce maintenance costs: The equipment has a simple structure and the connections between components are compact, which reduces the difficulty and cost of daily maintenance and upkeep, extends the service life of the equipment, and reduces the operating costs of the enterprise;
[0017] Improved production efficiency: The fully automated design makes the production process of hand-pulled pancakes continuous and efficient, without the need to stop for adjustment, which significantly improves production efficiency. At the same time, automated operation reduces human intervention, reduces the probability of errors in the production process, and ensures high-quality product output;
[0018] Improve product quality: While ensuring the stability of transmission and cutting, the equipment also ensures that the shape and thickness of each hand-pulled pancake are consistent, greatly improving the quality of the product and meeting the market demand for high-quality hand-pulled pancakes;
[0019] To sum up, the fully automatic hand-pulled pancake pressing machine of the utility model achieves the beneficial effects of stable transmission, accurate cutting, simple operation, low maintenance cost, high production efficiency and good product quality through optimized design, providing reliable technical support for the automated production of hand-pulled pancakes. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 This is a front-view three-dimensional structural schematic diagram of the utility model;
[0021] Figure 2 This is a rear-view stereoscopic structural schematic diagram of the utility model;
[0022] Figure 3 This is a schematic diagram of the connection structure of the cake pressing device of the utility model;
[0023] Figure 4 This is a schematic diagram of the cross-sectional connection structure of the dough guiding device of the utility model;
[0024] Figure 5 This is a schematic diagram of the connection structure of the cutting device of the utility model;
[0025] Figure 6 It is a schematic diagram of the cross-sectional connection structure of the transmission device of the utility model.
[0026] In the figure: 1 machine, 2 first film roll frame, 3 second film roll frame, 4 film guide roller, 5 dough guiding device, 6 bag film guiding device, 7 cake pressing device, 8 cutting device, 9 material guide trough, 100 material guide pipe, 101 material guide hopper, 102 horizontal frame, 103 bent support rod, 200 mounting block, 201 first guide roller, 202 film guide motor, 300 U-shaped trough frame, 301 pneumatic telescopic cylinder, 302 cake pressing plate, 400 sliding guide rail, 401 sliding guide block, 402 mounting plate, 403 shearing knife, 404 electric telescopic rod, 405 fixed frame, 406 shearing block, 407 shearing trough, 500 material guide roller, 501 second guide roller, 502 movable block, 503 slide trough frame, 504 slide trough cylinder, 505 compression spring, 506 material guide motor. DETAILED DESCRIPTION
[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0028] See also Figure 1-6 A fully automatic hand-grabbed pancake pressing machine comprises a machine platform 1, a first film rolling frame 2, a second film rolling frame 3, a film guide roller 4, a dough guiding device 5, a bag film guiding device 6, a cake pressing device 7, a cutting device 8, and a conveying device. A material guide trough 9 is provided at the upper end of the machine platform 1, and the material guide trough 9 is used for conveying bag film and dough. The machine platform 1 at one end of the material guide trough 9 is rotatably connected with the film guide roller 4, and the end of the machine platform 1 below the film guide roller 4 is fixedly connected with the first film rolling frame 2, a film roll bag is installed on the first film rolling frame 2, and the film roll bag is connected to the material guide trough 9 after passing the film guide roller 4. A dough guiding device 5 is fixedly connected to the machine platform 1 on one side of the film guide roller 4, and the dough guiding device 5 is used to guide the dough to the film roll bag on the material guide trough 9. The machine platform on one side of the dough guiding device 5 1 is fixedly connected to a second film roll frame 3, on which a film roll bag is also installed, and both sides of the inner wall of the material guide groove 9 located on one side below the second film roll frame 3 are respectively fixedly connected to bag film guiding devices 6, and the bag film guiding device 6 is used to convey the film roll bags of the second film roll frame 3 so that the film roll bags cover the film roll bags on the lower layer, and the dough is arranged between the two layers of film roll bags, and a cake pressing device 7 is fixedly connected to the machine platform 1 on one side of the second film roll frame 3, and the cake pressing device 7 is used to press the dough into a dough cake, and a cutting device 8 is fixedly connected to one side of the cake pressing device 7, and the cutting device 8 is used to shear the film roll bags on both sides of the dough cake, and a conveying device is arranged at the bottom of the material guide groove 9 located below the cake pressing device 7, and the conveying device is used to convey the double-layer film roll bags.
[0029] In one embodiment, the dough guiding device 5 includes a material guiding tube 100, a material guiding hopper 101, a horizontal frame 102, and a bent support rod 103. The horizontal frame 102 is fixedly connected to the machine table 1 on one side of the second film rolling frame 3, and one side of the middle of the horizontal frame 102 is fixedly connected to the lower end of the material guiding tube 100. The material guiding hopper 101 is fixedly connected to the upper end of the material guiding tube 100. The two sides of the middle of the material guiding tube 100 are respectively fixedly connected to the bent support rods 103, and the other ends of the bent support rods 103 are respectively connected to the upper side of the machine table 1. The dough is fixedly connected to the edge. In the present embodiment, one end of a conveyor is provided on one side of the upper end of the guide hopper 101. The arranged dough is sequentially put into the guide hopper 101 through the conveyor. After the dough enters the guide hopper 101, it enters the guide pipe 100 and is then conveyed to the guide trough 9 along the guide pipe 100. The dough is put onto the laid roll film bag. In the present embodiment, the bent support rod 103 is used to fix the guide pipe 100 on the machine platform 1, and the horizontal frame 102 is used to fix the bottom of the guide pipe 100.
[0030] In one embodiment, the bag film guiding device 6 includes a mounting block 200, a first guide roller 201, and a film guiding motor 202. The mounting blocks 200 are fixedly connected to the inner walls of the material guiding trough 9 on both sides, and two groups of contacting first guide rollers 201 are rotatably connected to the opposite sides of the mounting block 200, one group of which is connected to the film guiding motor 202, and the film guiding motor 202 is fixedly connected in the mounting block 200. When in use, after the roll film bag in the second roll film frame 3 is pulled out, the side edge of the roll film bag is set between the two groups of first guide rollers 201, and the film guiding motor 202 drives one group of the first guide rollers 201 to rotate, and the roll film bag is transmitted through the first guide rollers 201, so that the roll film bag is covered on top of the dough, so that the dough is sandwiched between the two layers of roll film bags.
[0031] In one embodiment, the cake pressing device 7 includes a U-shaped groove frame 300, a pneumatic telescopic cylinder 301, and a cake pressing plate 302. The U-shaped groove frame 300 is fixedly connected to the upper end of the machine 1, and the pneumatic telescopic cylinder 301 is fixedly connected to the middle part of the upper end of the U-shaped groove frame 300. The top rod of the pneumatic telescopic cylinder 301 passes through the U-shaped groove frame 300 and is fixedly connected to the cake pressing plate 302. When in use, when the dough moves directly below the cake pressing plate 302, the pneumatic telescopic cylinder 301 is started, and the pneumatic telescopic cylinder 301 drives the cake pressing plate 302 to move downward, and the dough is pressed by the cake pressing plate 302, thereby pressing the dough into a cake.
[0032] In one embodiment, the cutting device 8 includes a sliding guide rail 400, a sliding guide block 401, a mounting plate 402, a shearing knife 403, an electric telescopic rod 404, and a fixing frame 405. The ends of the U-shaped groove frame 300 are fixedly connected with the sliding guide rails 400 on both sides, and the sliding guide rails 400 are slidably connected with the sliding guide blocks 401. The mounting plate 402 is fixedly connected between the sliding guide blocks 401, and the side of the mounting plate 402 is fixedly connected with the shearing knife 403. The bottom of the guide groove 9 below the shearing knife 403 is embedded with a shearing block 406, and a shearing groove 407 is opened at the upper end of the shearing block 406. The blade of the lower end of the shearing knife 403 is embedded with the shearing groove 407. The middle part of the upper end of the mounting plate 402 is fixedly connected to the end of the top rod of the electric telescopic rod 404. The main body is fixedly connected with a fixing frame 405, and the fixing frame 405 is fixedly connected to one side of the upper end of the U-shaped groove frame 300. After the dough is pressed into a pancake, it is still located between the two layers of roll film bags, so the roll film needs to be cut. At this time, the electric telescopic rod 404 is started, and the electric telescopic rod 404 drives the mounting plate 402 to move downward, and the mounting plate 402 drives the shearing knife 403 on one side to move downward, and the blade part below the shearing knife 403 is inserted into the shearing groove 407 at the upper end of the shearing block 406. Through the shearing action of the blade and the shearing groove 407, the roll film bags between the pancakes are sheared. In this embodiment, the sliding guide block 401 slides along the sliding guide rail 400, thereby limiting the movement of the mounting plate 402, thereby improving the stability of the cutting process of the shearing knife 403.
[0033] In one embodiment, the conveying device includes a guide roller 500, a second guide roller wheel 501, a movable block 502, a slide slot frame 503, a slide slot cylinder 504, and a clamping spring 505. A roller shaft groove is provided at the bottom of the guide slot 9 on one side of the cutting device 8, and the guide roller 500 is rotatably connected in the roller shaft groove. The inner side walls of the guide slot 9 on both sides of the guide roller 500 are fixedly connected, and the slide slot cylinder 504 is slidably connected in the slide slot frame 503. The lower end of the slide slot cylinder 504 protrudes out of the slide slot frame 503 and is fixedly connected to the movable block 502. The slide sleeve in the slide slot cylinder 504 is connected to the clamping spring 505. One end of the clamping spring 505 passes through the slide slot cylinder 504 and is in contact with the inner side surface of the slide slot frame 503. A guide motor 506 is fixedly connected in the movable block 502, and the rotating shaft of the guide motor 506 The end is fixedly connected with a second guide roller 501, and the second guide roller 501 is respectively connected with the two ends of the guide roller 500. When in use, the two layers of roll bag film are slidably connected to the guide roller 500, and the second guide rollers 501 located at the two ends of the guide roller 500 are pressed on the two side edges of the roll bag film, and then the guide motor 506 is started, and the guide motor 506 drives the second guide roller 501 to rotate, and the roll bag film is driven by the second guide roller 501 to move along the guide groove 9. In this embodiment, the slide groove cylinder 504 has a downward force through the elastic force of the compression spring 505, and the slide groove cylinder 504 transmits the force to the movable block 502 and the second guide roller 501, so that the second guide roller 501 is pressed tightly against the guide roller 500, thereby improving the transmission stability of the roll film bag.
[0034] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.
[0035] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.
Claims
1. A fully automatic hand-held pancake pressing machine, comprising a machine platform (1), a first film rolling frame (2), a second film rolling frame (3), a film guide roller (4), a dough guiding device (5), a bag film guiding device (6), a pancake pressing device (7), a cutting device (8), and a conveying device, characterized in that: A material guide trough (9) is provided at the upper end of the machine platform (1); a film guide roller (4) is rotatably connected to the machine platform (1) at one end of the material guide trough (9); a first film rolling frame (2) is fixedly connected to the end of the machine platform (1) below the film guide roller (4); a dough guiding device (5) is fixedly connected to the machine platform (1) on one side of the film guide roller (4); a second film rolling frame (3) is fixedly connected to the machine platform (1) on one side of the dough guiding device (5); bag film guiding devices (6) are respectively fixedly connected to the inner walls of the material guide trough (9) located below the second film rolling frame (3); a cake pressing device (7) is fixedly connected to the machine platform (1) on one side of the second film rolling frame (3); a cutting device (8) is fixedly connected to one side of the cake pressing device (7); and a conveying device is provided at the bottom of the material guide trough (9) located below the cake pressing device (7).
2. The fully automatic hand-caught pancake pressing machine according to claim 1, characterized in that: The dough guiding device (5) comprises a material guiding tube (100), a material guiding hopper (101), a transverse frame (102), and a bent support rod (103); the transverse frame (102) is fixedly connected to the machine platform (1) on one side of the second film rolling machine frame (3); one side of the middle of the transverse frame (102) is fixedly connected to the lower end of the material guiding tube (100); the upper end of the material guiding tube (100) is fixedly connected to the material guiding hopper (101); the two sides of the middle of the material guiding tube (100) are respectively fixedly connected to the bent support rods (103); the other ends of the bent support rods (103) are respectively fixedly connected to the upper edge of the machine platform (1).
3. The fully automatic hand-caught pancake pressing machine according to claim 1, characterized in that: The bag film guiding device (6) comprises a mounting block (200), a first guide roller (201), and a film guiding motor (202); the mounting blocks (200) are fixedly connected to both sides of the inner wall of the material guiding trough (9); two groups of contacting first guide rollers (201) are rotatably connected to the opposite sides of the mounting block (200); one group of the first guide rollers (201) is connected to the film guiding motor (202); and the film guiding motor (202) is fixedly connected in the mounting block (200).
4. The fully automatic hand-caught pancake pressing machine according to claim 1, characterized in that: The cake pressing device (7) comprises a U-shaped groove frame (300), a pneumatic telescopic cylinder (301), and a cake pressing plate (302); the upper end of the machine platform (1) is fixedly connected to the U-shaped groove frame (300); the middle part of the upper end of the U-shaped groove frame (300) is fixedly connected to the pneumatic telescopic cylinder (301); and the top rod of the pneumatic telescopic cylinder (301) passes through the U-shaped groove frame (300) and is fixedly connected to the cake pressing plate (302).
5. The fully automatic hand-caught pancake pressing machine according to claim 4, characterized in that: The cutting device (8) comprises a sliding guide rail (400), a sliding guide block (401), a mounting plate (402), a shearing knife (403), an electric telescopic rod (404), and a fixing frame (405); the ends of the U-shaped groove frame (300) are fixedly connected to the sliding guide rails (400) on both sides; the sliding guide blocks (401) are slidably connected to the sliding guide rails (400); the mounting plates (402) are fixedly connected between the sliding guide blocks (401); the side surfaces of the mounting plates (402) are fixedly connected to the shearing knife (403); A shear block (406) is embedded and connected to the bottom of the guide trough (9) below the shearing knife (403); a shearing groove (407) is formed at the upper end of the shear block (406); a blade at the lower end of the shearing knife (403) is engaged with the shearing groove (407); a middle portion of the upper end of the mounting plate (402) is fixedly connected to the end of the top rod of the electric telescopic rod (404); a fixing frame (405) is fixedly connected to the main body of the electric telescopic rod (404); and the fixing frame (405) is fixedly connected to one side of the upper end of the U-shaped trough frame (300).
6. The fully automatic hand-caught pancake pressing machine according to claim 1, characterized in that: The conveying device comprises a material guide roller (500), a second guide roller wheel (501), a movable block (502), a slide groove frame (503), a slide groove cylinder (504), and a compression spring (505); a roller shaft groove is provided at the bottom of the material guide groove (9) on one side of the cutting device (8); a material guide roller (500) is rotatably connected in the roller shaft groove; slide groove frames (503) are fixedly connected to the inner side walls of the material guide groove (9) on both sides of the material guide roller (500); a slide groove cylinder (504) is slidably connected in the slide groove frame (503); and the slide groove cylinder (504) ) protrudes out of the slide frame (503) and is fixedly connected to the movable block (502); a compression spring (505) is connected to the sliding sleeve in the slide cylinder (504); one end of the compression spring (505) passes through the slide cylinder (504) and is in contact with the inner side surface of the slide frame (503); a material guide motor (506) is fixedly connected in the movable block (502); a second guide roller (501) is fixedly connected to the end of the rotating shaft of the material guide motor (506); and the second guide roller (501) is respectively in contact with the two ends of the material guide roller (500).