A servo feeding device for printing tin cans

Abstract

The utility model relates to the technical field of iron can printing and production, specifically a servo feeding device for iron can printing, including a support seat, a turntable and two conveyor belts, characterized in that a live flywheel is fixedly installed in the middle of the support seat, the support seat is connected to the rotating shaft for unidirectional rotation through the live flywheel, the top of the rotating shaft is fixedly connected to the center of the bottom of the turntable, a plurality of material troughs are provided at the edge of the top of the turntable, one end of the two conveyor belts is respectively located below the turntable, and symmetrically distributed on both sides of the turntable. The advantage is that when the turntable rotates, the iron cans in the material troughs will be moved from the feeding conveyor belt to the pallet, and the next material trough will correspond to the feeding conveyor belt, so that the next iron can enters the next material trough, and the turntable will not knock the iron cans during the rotation process, so the quality of the product can be ensured under the state of high-efficiency operation, and the operator does not need to consider whether the iron cans are close together, thereby facilitating the operation.

Description

Technical Field

[0001] The utility model relates to the technical field of iron can printing production, in particular to a servo feeding device for iron can printing. Background Art

[0002] During the printing process of tin cans, workers continuously transfer tin cans to the conveyor belt so that the tin cans are transported to the processing step along the conveyor belt. However, since the workers manually place the tin cans on the conveyor belt, the gaps between each tin can and the processing step are unequal, resulting in confusion during processing.

[0003] A servo feeding device for printing iron cans disclosed in Chinese patent CN210312417U not only avoids the confusion after the iron cans are transferred, but also indirectly improves the progress of the process. However, while solving the problem, the servo feeding device for printing iron cans has the following defects:

[0004] There are four groups of first levers, which control the conveying rate of iron cans. When there are two or more iron cans next to each other in front of the first levers located above the platform, the first lever drives the first lever to rotate, and the next group of first levers rotated to the top of the platform will hit the surface of the next iron can. Therefore, the first lever is not easy to rotate too fast, otherwise it will knock dents on the surface of the iron can, affecting the product quality. Or the person placing the iron cans on the platform needs to adjust the efficiency of placing the iron cans according to the conveying efficiency of the iron cans to avoid the situation where two iron cans are next to each other. Therefore, the operation is inconvenient. Utility Model Content

[0005] The purpose of the utility model is to solve at least one of the technical defects described in the background technology.

[0006] To this end, one purpose of the utility model is to provide a servo feeding device for iron can printing, aiming to solve the problem that the efficiency of the servo feeding device for iron can printing in the prior art is not easy to be too fast, otherwise it will affect the product quality or the operation is inconvenient.

[0007] In order to achieve the above-mentioned purpose, an embodiment of the utility model provides a servo feeding device for printing iron cans, comprising a support seat, a turntable and two conveyor belts, characterized in that a live flywheel is fixedly installed in the middle of the support seat, the support seat is connected to the rotating shaft for unidirectional rotation through the live flywheel, the top of the rotating shaft is fixedly connected to the center of the bottom of the turntable, a plurality of material troughs are opened at the edge of the top of the turntable, one end of the two conveyor belts is respectively located below the turntable and symmetrically distributed on both sides of the turntable, and a support plate is fixedly connected to the outer surface of the support seat;

[0008] The outer surface of the rotating shaft is fixedly connected with a gear, the bottom of the supporting seat is fixedly connected with a mounting seat, a motor is fixedly installed on one side of the mounting seat, a disc is fixedly connected with the output end of the motor, and a driving tooth is fixedly connected with the outer surface of the disc;

[0009] The outer surface of the rotating shaft is fixedly connected with a ratchet, the bottom of the supporting seat is fixedly connected with a positioning shaft, the outer surface of the positioning shaft is rotatably connected with a supporting arm, one side of the supporting arm is fixedly connected with a pawl, the bottom of the supporting seat is fixedly connected with a positioning plate, one side of the positioning plate is fixedly connected with a spring, and one end of the spring away from the positioning plate is fixedly connected to the supporting arm;

[0010] One end of the support arm away from the positioning shaft is fixedly connected to a shift rod, one end of the shift rod is fixedly connected to a guide rod, and the bottom of the disc is fixedly connected to a support block.

[0011] Preferably, any of the above schemes is that a limit plate is fixedly connected to the edge of the support plate to prevent the turntable from rotating too fast and causing the iron can to be thrown out.

[0012] Preferably, any of the above schemes has a positioning bolt threadedly connected to the top of the turntable, and positioning bolts are provided on both sides of each of the material troughs, and the outer surface of the positioning bolts is slidably connected to a width adjustment plate and a depth adjustment plate, so that the width and depth of the material trough can be adjusted, thereby being suitable for iron cans of different diameters.

[0013] Preferably, any of the above schemes is that a positioning block and a limit block are fixedly connected to the tops of the two side brackets of the two conveyor belts, the internal thread of the positioning block is connected to a screw, one end of the screw is rotatably connected to a guide plate, the side of the guide plate close to the screw is fixedly connected to a limit rod, the limit rod is slidably connected to the inside of the limit block, and one end of the guide plate is fixedly connected to an inclined plate, which can limit the position of the iron can on the conveyor belt, ensure that the iron can can smoothly enter the material trough, and ensure that the iron can is located in the middle part of the conveyor belt after coming out of the material trough.

[0014] Compared with the prior art, the advantages and beneficial effects of the utility model are:

[0015] 1. When the feeding conveyor belt conveys a can into the trough, the can in the trough will block the next can. When the turntable rotates, the can in the trough will be moved from the feeding conveyor belt to the pallet, and the next trough will correspond to the feeding conveyor belt, so that the next can enters the next trough. The turntable will not hit the can during the rotation process. Therefore, the quality of the product can be ensured under the state of high-efficiency operation, and the operator does not need to consider whether the cans are close to each other, which facilitates the operation.

[0016] 2. Through the cooperation of the ratchet and the pawl, when the turntable rotates at a high speed, after the driving tooth disengages from the gear, the pawl is engaged in the slot on the ratchet, causing the turntable to stop suddenly, thereby ensuring that the turntable will not rotate due to inertia, resulting in the misalignment between the material trough and the feed conveyor belt. In addition, the setting of the live flywheel can avoid the problem of the turntable rotating in the opposite direction due to the reaction force after the turntable stops suddenly, thus ensuring stability during high-efficiency operations.

[0017] 3. By setting the width adjustment plate and the depth adjustment plate, the width of the trough can be adjusted by sliding the two width adjustment plates closer to or away from each other, and the depth of the trough can be adjusted by sliding the depth adjustment plate. Therefore, servo feeding and conveying of iron cans of different diameters can be performed, with flexible structure and wide application range.

[0018] 4. By setting the guide plate and the inclined plate, the iron cans on the conveyor belt can be located in the middle of the conveyor belt, avoiding the problem that the iron cans in the trough block the movement of the iron cans behind, causing the iron cans to shift and the subsequent iron cans cannot enter the trough smoothly.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description and in part will become apparent from the following description or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0021] Figure 1 It is a structural schematic diagram according to the utility model.

[0022] Figure 2 It is a schematic diagram of the structure of the turntable according to the utility model.

[0023] Figure 3 It is a schematic diagram of the structure of the support seat according to the utility model when viewed from above.

[0024] Figure 4 It is a schematic diagram of the structure of the support seat according to the utility model when viewed from above.

[0025] Figure 5 It is a structural schematic diagram of the width adjustment plate according to the utility model.

[0026] Figure 6 It is a structural schematic diagram of the depth adjustment plate according to the utility model.

[0027] Among them: 1. support seat, 11. flywheel, 12. rotating shaft, 13. gear, 14. mounting seat, 15. motor, 16. disc, 17. driving tooth, 18. supporting leg, 19. base, 2. turntable, 21. material trough, 22. positioning bolt, 3. support plate, 31. limit plate, 32. reinforcement plate, 4. ratchet, 41. positioning shaft, 42. support arm, 43. pawl, 44. positioning plate, 45. spring, 46. lever, 47. guide rod, 48. support block, 5. width adjustment plate, 51. first slide slot, 6. depth adjustment plate, 61. second slide slot, 7. conveyor belt, 71. feed conveyor belt, 72. discharge conveyor belt, 701. positioning block, 702. screw, 703. guide plate, 704. limit block, 705. limit rod, 706. inclined plate. DETAILED DESCRIPTION

[0028] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0029] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] The utility model provides a servo feeding device for printing iron cans.

[0031] Embodiment 1:

[0032] like Figure 1-4As shown, it includes a support base 1, a turntable 2 and two conveyor belts 7, and is characterized in that a live flywheel 11 is fixedly installed in the middle of the support base 1, and the structure principle is the same as that of the flywheel connected to the chain in the middle of the rear wheel of the bicycle, the difference is that the outer ring of the live flywheel 11 has no teeth, and the live flywheel 11 includes an inner ring and an outer ring. When the outer ring is fixed, the inner ring can rotate counterclockwise but cannot rotate clockwise, wherein the outer ring of the live flywheel 11 is fixed in the middle of the support base 1, and the support base 1 is unidirectionally rotatably connected with the rotating shaft 12 through the live flywheel 11, and the rotating shaft 12 is fixedly connected to the inner ring of the live flywheel 11, so the rotating shaft 12 can only rotate with the live flywheel 11. The inner ring of the rotating shaft 12 rotates counterclockwise but cannot rotate clockwise, thereby achieving the purpose of one-way rotation connection. The top of the rotating shaft 12 is fixedly connected to the center of the bottom of the rotating disk 2. The rotating disk 2 can rotate counterclockwise with the rotating shaft 12. A plurality of material troughs 21 are provided at the edge of the top of the rotating disk 2. One end of the two conveyor belts 7 are respectively located below the rotating disk 2 and are symmetrically distributed on both sides of the rotating disk 2. A support plate 3 is fixedly connected to the outer surface of the supporting seat 1. After the iron can is transferred from a conveyor belt 7 to the material trough 21, the rotating disk 2 can remove the iron can from the conveyor belt 7 by rotating, and the support plate 3 is used to support the bottom of the iron can to prevent the iron can from falling.

[0033] like Figure 4 As shown, the outer surface of the rotating shaft 12 is fixedly connected with a gear 13, the bottom of the supporting seat 1 is fixedly connected with a mounting seat 14, and a motor 15 is fixedly installed on one side of the mounting seat 14. The output end of the motor 15 is fixedly connected with a disc 16, and the outer surface of the disc 16 is fixedly connected with a driving tooth 17, which meshes with the gear 13. The motor 15 drives the disc 16 to rotate, so that the driving tooth 17 rotates the rotating shaft 12 through the gear 13, so as to achieve the purpose of rotating the turntable 2 counterclockwise (Note: In order to correspond to the counterclockwise rotation of the inner ring of the above-mentioned flywheel 11, the counterclockwise rotation of the turntable 2 here is determined based on the top view). When the disc 16 rotates a certain angle, the driving tooth 17 is disengaged from the gear 13, so that the turntable 2 stops rotating, and the disc 16 continues to rotate. The driving tooth 17 can mesh with the gear 13 again, thereby repeatedly rotating, so that the turntable 2 can rotate a certain angle and then stop for a period of time;

[0034] like Figure 4As shown, the outer surface of the rotating shaft 12 is fixedly connected with the ratchet 4, the bottom of the supporting seat 1 is fixedly connected with the positioning shaft 41, the outer surface of the positioning shaft 41 is rotatably connected with the supporting arm 42, one side of the supporting arm 42 is fixedly connected with the ratchet 43, the bottom of the supporting seat 1 is fixedly connected with the positioning plate 44, one side of the positioning plate 44 is fixedly connected with the spring 45, one end of the spring 45 away from the positioning plate 44 is fixedly connected to the supporting arm 42, the spring 45 supports the supporting arm 42, so that the ratchet 43 can be stuck in the card groove on the surface of the ratchet 4, so that the rotating shaft 12 can not continue to rotate counterclockwise, and the turntable 2 can no longer continue to rotate counterclockwise (Note: The purpose of designing the ratchet 4 and the pawl 43 is to prevent the turntable 2 from rotating counterclockwise due to inertia after the driving tooth 17 is separated from the gear 13, and to play an emergency stop role. In addition, the design of the active flywheel 11 allows the turntable 2 to rotate only counterclockwise. Therefore, when the turntable 2 stops suddenly, the reaction force changes the direction of rotation to clockwise. At this time, the active flywheel 11 can lock the turntable 2, so that the turntable 2 cannot rotate clockwise due to the reaction force.

[0035] like Figure 4 As shown, one end of the support arm 42 away from the positioning shaft 41 is fixedly connected to a lever 46, one end of the lever 46 is fixedly connected to a guide rod 47, and the bottom of the disk 16 is fixedly connected to a support block 48. When the disk 16 rotates and the driving tooth 17 on the surface is about to engage with the gear 13, the support block 48 first pushes the lever 46 to move the end of the lever 46 away from the support arm 42 to the outer surface of the support block 48, thereby pushing the support arm 42 to disengage the pawl 43 from the slot on the ratchet 4, and then the driving tooth 17 engages with the gear 13 again, which can drive the gear 13 to rotate. After the gear 13 rotates, the support block 48 is disengaged from the lever 46, so that the spring 45 pushes the support arm 42 to make the pawl 43 fit the outer surface of the ratchet 4. When the next slot on the ratchet 4 reaches the position of the pawl 43, the pawl 43 can prevent the ratchet 4 from rotating, and at this time, the driving tooth 17 is also disengaged from the gear 13.

[0036] Preferably, Figure 1-3 As shown, a limit plate 31 is fixedly connected to the edge of the support plate 3. When the turntable 2 rotates too fast, the limit plate 31 can block the iron can to prevent the iron can from being thrown out due to centrifugal force.

[0037] Furthermore, a reinforcing plate 32 is fixedly connected to the outer surface of the support seat 1, and the top of the reinforcing plate 32 is fixedly connected to the bottom of the support plate 3, so as to reinforce the support plate 3 and avoid the problem of deformation due to long-term stress.

[0038] Specifically, the bottom of the support seat 1 is fixedly connected with a support leg 18 , and the bottom end of the support leg 18 is fixedly connected with a base 19 .

[0039] Embodiment 2:

[0040] like Figure 1 , Figure 2 , Figure 5 and Figure 6 As shown, on the basis of Example 1, a positioning bolt 22 is threadedly connected to the top of the turntable 2, and positioning bolts 22 are provided on both sides of each material trough 21. The outer surface of the positioning bolt 22 is slidably connected to the width adjustment plate 5 and the depth adjustment plate 6. Two width adjustment plates 5 and one depth adjustment plate 6 form a group. By sliding the two width adjustment plates 5 closer to or away from each other, the width of the material trough 21 can be adjusted, and by sliding the depth adjustment plate 6, the depth of the material trough 21 can be adjusted. Therefore, for iron cans of different diameters, the width adjustment plate 5 and the depth adjustment plate 6 can be adjusted to ensure that only one iron can enters the material trough 21. After adjusting the width adjustment plate 5 and the depth adjustment plate 6, by tightening the positioning bolt 22, the head of the positioning bolt 22 and the turntable 2 can clamp the width adjustment plate 5 and the depth adjustment plate 6, so as to achieve the purpose of fixing the width adjustment plate 5 and the depth adjustment plate 6.

[0041] Specifically, a first sliding groove 51 is opened on one side of the width adjustment plate 5, and the width adjustment plate 5 is slidably connected to the surface of the positioning bolt 22 through the first sliding groove 51. A second sliding groove 61 is opened on one side of the depth adjustment plate 6, and the depth adjustment plate 6 is slidably connected to the surface of the positioning bolt 22 through the second sliding groove 61.

[0042] Embodiment three:

[0043] like Figure 1 As shown, on the basis of Example 1 or Example 2, a positioning block 701 and a limit block 704 are fixedly connected to the tops of the brackets on both sides of the two conveyor belts 7, the internal thread of the positioning block 701 is connected to a screw rod 702, one end of the screw rod 702 is rotatably connected to a guide plate 703, and the guide plate 703 is fixedly connected to a side close to the screw rod 702 with a limit rod 705, and the limit rod 705 is slidably connected to the inside of the limit block 704. By rotating the screw rod 702, the position of the guide plate 703 can be adjusted. Therefore, the two relative guide plates 703 can be adjusted according to the diameter of the iron can, so that the iron can can smoothly enter the material trough 21 on the turntable 2, and one end of the guide plate 703 is fixedly connected to an inclined plate 706, and the iron can placed on the conveyor belt 7 can be guided to the middle part of the conveyor belt 7 through the inclined plate 706.

[0044] Specifically, Figure 1As shown, the two conveyor belts 7 are respectively a feed conveyor belt 71 and a discharge conveyor belt 72. The feed conveyor belt 71 is used to convey iron cans in the direction of the turntable 2, and the discharge conveyor belt 72 is used to convey the iron cans in the material trough 21 to the next process of iron can printing. The inclined plate 706 in the feed conveyor belt 71 is located at the end of the guide plate 703 away from the turntable 2, and is used to guide the iron cans placed on the feed conveyor belt 71 to the middle, thereby ensuring that the iron cans can enter the material trough 21. The inclined plate 706 in the discharge conveyor belt 72 is located at the end of the guide plate 703 close to the turntable 2, and is used to guide the iron cans output from the material trough 21 to the middle of the discharge conveyor belt 72.

[0045] The working principle of the utility model is as follows: when in use, the iron can is placed on the feeding conveyor 71. After the feeding conveyor 71 conveys one iron can into the material trough 21, the iron can in the material trough 21 will block the next iron can, so that the next iron can is located outside the turntable 2. The motor 15 drives the gear 13 to rotate through the driving teeth 17 on the disc 16, so that the turntable 2 rotates counterclockwise by a certain angle, and the iron can in the material trough 21 is transferred to the top of the support plate 3, and the next material trough 21 is aligned with the feeding conveyor 71, so that during the rest time of the turntable 2, the feeding conveyor 71 conveys the next iron can into the next material trough 21, and the cycle continues;

[0046] When the trough 21 with the iron can inside rotates to above the unloading conveyor belt 72 , the unloading conveyor belt 72 will take the iron can out of the trough 21 during the rest time of the turntable 2 .

[0047] Compared with the prior art, the present invention has the following beneficial effects:

[0048] 1. When the feed conveyor belt 71 transfers an iron can to the material trough 21, the iron can in the material trough 21 will block the next iron can. When the turntable 2 rotates, the iron can in the material trough 21 will be moved from the feed conveyor belt 71 to the support plate 3, and the next material trough 21 will correspond to the feed conveyor belt 71, so that the next iron can enters the next material trough 21. The turntable 2 will not knock the iron can during the rotation process. Therefore, under the state of high-efficiency operation, the quality of the product can be ensured, and the operator does not need to consider whether the iron cans are close to each other, which facilitates the operation.

[0049] 2. Through the cooperation of the ratchet 4 and the pawl 43, when the turntable 2 rotates at a high speed, after the driving tooth 17 disengages from the gear 13, the pawl 43 is engaged in the slot on the ratchet 4, causing the turntable 2 to stop suddenly, thereby ensuring that the turntable 2 will not rotate due to inertia, resulting in the problem of misalignment between the material trough 21 and the feed conveyor belt 71. In addition, in conjunction with the setting of the flywheel 11, the problem of the turntable 2 rotating in the opposite direction due to the reaction force after the turntable 2 stops suddenly is avoided, thereby ensuring stability during high-efficiency operations.

[0050] 3. By setting the width adjustment plate 5 and the depth adjustment plate 6, the width of the material trough 21 can be adjusted by sliding the two width adjustment plates 5 closer to or farther away from each other, and the depth of the material trough 21 can be adjusted by sliding the depth adjustment plate 6. Therefore, servo feeding and conveying cans of different diameters can be performed, the structure is flexible, and the application range is wide.

[0051] 4. By setting the guide plate 703 and coordinating with the setting of the inclined plate 706, the iron cans on the conveyor belt 7 can be located in the middle of the conveyor belt 7, avoiding the problem that the iron cans in the trough 21 block the movement of the rear iron cans, causing the iron cans to shift and making it impossible for the subsequent iron cans to enter the trough 21 smoothly.

Claims

1. A servo feeding device for printing iron cans, comprising a support base (1), a turntable (2) and two conveyor belts (7), characterized in that: A live flywheel (11) is fixedly mounted in the middle of the support seat (1), and the support seat (1) is unidirectionally rotatably connected to a rotating shaft (12) via the live flywheel (11). The top end of the rotating shaft (12) is fixedly connected to the center of the bottom of the turntable (2). A plurality of material troughs (21) are provided at the edge of the top of the turntable (2). One end of the two conveyor belts (7) are respectively located below the turntable (2) and are symmetrically distributed on both sides of the turntable (2). A support plate (3) is fixedly connected to the outer surface of the support seat (1); The outer surface of the rotating shaft (12) is fixedly connected with a gear (13); the bottom of the supporting seat (1) is fixedly connected with a mounting seat (14); a motor (15) is fixedly mounted on one side of the mounting seat (14); a disc (16) is fixedly connected to the output end of the motor (15); and a driving tooth (17) is fixedly connected to the outer surface of the disc (16); The outer surface of the rotating shaft (12) is fixedly connected with a ratchet (4), the bottom of the supporting seat (1) is fixedly connected with a positioning shaft (41), the outer surface of the positioning shaft (41) is rotatably connected with a supporting arm (42), one side of the supporting arm (42) is fixedly connected with a ratchet (43), the bottom of the supporting seat (1) is fixedly connected with a positioning plate (44), one side of the positioning plate (44) is fixedly connected with a spring (45), and one end of the spring (45) away from the positioning plate (44) is fixedly connected to the supporting arm (42); One end of the support arm (42) away from the positioning shaft (41) is fixedly connected to a lever (46), one end of the lever (46) is fixedly connected to a guide rod (47), and the bottom of the disc (16) is fixedly connected to a support block (48).

2. The servo feeding device for printing iron cans according to claim 1, characterized in that: A limiting plate (31) is fixedly connected to the edge of the support plate (3).

3. The servo feeding device for printing iron cans according to claim 2, characterized in that: A reinforcing plate (32) is fixedly connected to the outer surface of the support seat (1), and the top of the reinforcing plate (32) is fixedly connected to the bottom of the support plate (3).

4. The servo feeding device for printing iron cans according to claim 1, characterized in that: The top of the turntable (2) is threadedly connected with a positioning bolt (22), and both sides of each of the material troughs (21) are provided with positioning bolts (22), and the outer surfaces of the positioning bolts (22) are slidably connected to the width adjustment plate (5) and the depth adjustment plate (6).

5. The servo feeding device for printing iron cans according to claim 4, characterized in that: A first sliding groove (51) is provided on one side of the width adjustment plate (5), and a second sliding groove (61) is provided on one side of the depth adjustment plate (6).

6. The servo feeding device for printing iron cans according to claim 1, characterized in that: The bottom of the support seat (1) is fixedly connected to a support leg (18), and the bottom end of the support leg (18) is fixedly connected to a base (19).

7. The servo feeding device for printing iron cans according to claim 1, characterized in that: A positioning block (701) and a limit block (704) are fixedly connected to the tops of the brackets on both sides of the two conveyor belts (7); a screw rod (702) is internally threadedly connected to the positioning block (701); one end of the screw rod (702) is rotatably connected to a guide plate (703); a side of the guide plate (703) close to the screw rod (702) is fixedly connected to a limit rod (705); the limit rod (705) is slidably connected to the inside of the limit block (704); and one end of the guide plate (703) is fixedly connected to an inclined plate (706).

8. The servo feeding device for printing iron cans according to claim 7, characterized in that: The two conveyor belts (7) are respectively a feed conveyor belt (71) and a discharge conveyor belt (72); the inclined plate (706) in the feed conveyor belt (71) is located at an end of the guide plate (703) away from the turntable (2), and the inclined plate (706) in the discharge conveyor belt (72) is located at an end of the guide plate (703) close to the turntable (2).

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