A tableware transmission device

Abstract

In order to increase the integration and automation level of an intelligent unmanned kitchen, the present invention proposes a new type of tableware transmission device, which includes: a first motor 1, a roller, a belt 3, a bowl pre-placement rack 7, a bowl transmission channel 6, a power transmission mechanism, and a bowl pusher 5, and is characterized in that: the motor shaft of the first motor 1 is connected to the roller, the outside of the roller passes through the belt 3, the first end 31 of the belt 3 is fixed to the upper part of the side surface of the bowl pre-placement rack 7, the second end 32 of the belt 3 is fixed to the lower part of the side surface of the bowl pre-placement rack 7, and an upper fixed fulcrum and a lower fixed fulcrum are respectively arranged on the inner side of the belt 3, the height of the upper fixed fulcrum is higher than the highest point of the bowl pre-placement rack 7, the height of the lower fixed fulcrum is lower than the lowest point of the bowl pre-placement rack 7, and the height of the motor shaft of the first motor 1 is located between the upper fixed fulcrum and the lower fixed fulcrum.

Description

Technical Field

[0001] The present invention relates to the technical field of mechanical automation, and more specifically, to a tableware transmission device. Background Art

[0002] Currently, in the development of existing intelligent unmanned kitchens, there is currently a blank in the automated transmission method for tableware or chopsticks. Existing tableware or chopstick processing appliances are only dishwashers or disinfection cabinets, etc. However, neither dishwashers nor disinfection cabinets can transport tableware and chopsticks from a designated position to in front of the user, and the volumes of dishwashers and disinfection cabinets are relatively large and cannot be directly integrated into intelligent unmanned kitchens.

[0003] Currently, our company has developed an intelligent unmanned kitchen, which includes a fully automatic rice cooker that can realize the processes of automatically adding rice, automatically adding water, automatically washing rice, and automatically cooking rice. When the rice is cooked and the user starts to eat, the user needs to take out the rice bowl by himself and manually serve the rice according to his own appetite. During this process, in order to facilitate the user to smoothly obtain the rice bowl and chopsticks, a reasonable rice bowl pushing device and chopstick pushing device need to be designed. Summary of the Invention

[0004] In view of this, in order to increase the integration and automation of intelligent unmanned kitchens, the present invention proposes a tableware transmission device, which drives the bowl transmission channel to lift through a first motor, and synchronously drives a bowl pusher to move towards the bowl transmission channel through a second motor and a third motor, so that the rice bowl enters the bowl transmission channel from the bowl pre-placement rack, and the chopsticks enter the chopstick basket from the bowl pre-placement rack, which can facilitate the user to directly take the rice bowl and chopsticks from the bowl transmission channel and the chopstick basket respectively.

[0005] A tableware transmission device, comprising: a first motor 1, a roller, a belt 3, a bowl pre-placement rack 7, a bowl transmission channel 6, a power transmission mechanism and a bowl pusher 5, characterized in that: the motor shaft of the first motor 1 is connected to the roller, the outside of the roller passes through the belt 3, the first end 31 of the belt 3 is fixed to the upper part of the side surface of the bowl pre-placement rack 7, the second end 32 of the belt 3 is fixed to the lower part of the side surface of the bowl pre-placement rack 7, and an upper fixed fulcrum and a lower fixed fulcrum are respectively arranged on the inner side of the belt 3, the height of the upper fixed fulcrum is higher than the highest point of the bowl pre-placement rack 7, the height of the lower fixed fulcrum is lower than the lowest point of the bowl pre-placement rack 7, the height of the motor shaft of the first motor 1 is located between the upper fixed fulcrum and the lower fixed fulcrum. When the motor shaft of the first motor 1 rotates, it can drive the belt 3 to rotate along the upper fixed fulcrum, the roller and the lower fixed fulcrum, so as to drive the bowl pre-placement rack 7 to move up and down. When the bowl pre-placement rack 7 moves to the bottommost end, the automatic equipment places the bowls in the dishwasher at the designated position on the bowl pre-placement rack 7, and places the chopsticks in the dishwasher at the designated position on the bowl pre-placement rack 7. When the bowl pre-placement rack 7 moves up to be flush with the position of the bowl transmission channel 6 or 1 mm to 1 cm higher, the bowl pre-placement rack 7 stops moving and remains stationary; the power transmission mechanism is connected to the bowl pusher 5, the bowl pusher 5 is arranged beside the bowl pre-placement rack 7, and the bowl pusher 5 can approach the bowl transmission channel 6 under the action of the power transmission mechanism, so that the rice bowl enters the bowl transmission channel 6 from the designated position on the bowl pre-placement rack 7. The chopstick basket 61 is fixed to the upper part of the side of the bowl pre-placement rack 7 away from the bowl pusher 5, so that when the bowl pusher 5 approaches the bowl transmission channel 6 under the action of the power transmission mechanism, the chopsticks can enter the chopstick basket 61 from the designated position on the bowl pre-placement rack 7.

[0006] Further, the second roller 12 and the third roller 13 press on the outside of the belt 3, so that the belt 3 can rotate by fitting on the outside of the first roller 11.

[0007] Further, the upper fixed fulcrum is the fourth roller 14, the lower fixed fulcrum is the fifth roller 15, and the motor shaft of the first motor 1 is connected to the first roller 11, which can reduce the energy consumption loss of the first motor 1.

[0008] Further, an upper protective cover 21 is provided outside the fourth roller 14. Two U-shaped holes 211 and a first belt perforation 212 are provided on the upper protective cover 21. Two roller shafts of the fourth roller 14 are respectively fixed in the two U-shaped holes 211, so that the fourth roller 14 can rotate along the two roller shafts fixed in the U-shaped holes 211, and the belt 3 can pass through the first belt perforation 212. A lower protective cover 22 is provided outside the fifth roller 15. Two circular holes 221 and a second belt perforation 222 are provided on the lower protective cover 22. Two roller shafts of the fifth roller 15 are respectively fixed in the two circular holes 221, so that the fifth roller 15 can rotate along the two roller shafts fixed in the circular holes 221, and the belt 3 can pass through the second belt perforation 222. The belt passing through the first belt perforation 212 bypasses the third roller 13, then bypasses the first roller 11, then bypasses the second roller 12 and passes through the second belt perforation 222 and then surrounds the outside of the fifth roller 15. The purpose of using U-shaped holes 211 instead of ordinary circular holes on the fourth roller 14 is to have a micro-adjustment function.

[0009] Further, the number of layers of the bowl transmission channel 6 is multiple layers. Preferably, the number of layers of the bowl transmission channel 6 is 6 to 12 layers. More preferably, the number of layers of the bowl transmission channel 6 is 8 layers, so as to meet the bowl-using needs of ordinary families.

[0010] Further, edge protruding guardrails are provided on the channels of each layer of the bowl transmission channel 6, so as to prevent the phenomenon that the rice bowls deviate and fall when being pushed from the bowl pre-placement rack 7 to the bowl transmission channel 6.

[0011] Further, the number of layers of the bowl pre-placement rack 7 is the same as that of the bowl transmission channel 6, and the widths and heights of the bowl pre-placement rack 7 and the bowl transmission channel 6 are the same.

[0012] Further, the bowl pusher 5 includes a main bracket 51, branch push rods 52 and a chopstick pushing plate 53. A plurality of branch push rods 52 and the chopstick pushing plate 53 are vertically fixed on the main bracket 51. The plurality of branch push rods 52 form an array structure. One end of each branch push rod 52 is fixed to the side wall of the main bracket 51 by screws, and the other end of each branch push rod 52 extends towards the direction of the bowl transmission channel 6. The number of branch push rods 52 is equal to the number of the bowl pre-placement racks 7. The chopstick pushing plate 53 is located above the main bracket 51 and deviates from the array of the branch push rods 52. Below the chopstick pushing plate 53 is above the chopstick placement position of the top layer of the bowl pre-placement rack 7. A chopstick pushing rod is fixed to one side of the chopstick pushing plate 53, and the direction of the chopstick pushing rod is parallel to the direction of the branch push rods 52.

[0013] Further, a bowl guard 521 is provided at the free end of the branch push rod 52. The bowl guard 521 includes an upper raised platform 5211 and a bowl guard fence 5212. The upper raised platform 5211 can be buckled on the upper part of the bowl mouth of the rice bowl, and the bowl guard fence 5212 matches the outer side of the rice bowl. The upper part of the rice bowl can be buckled by the bowl guard 521, so that the rice bowl can be steadily pushed forward without being overturned.

[0014] Further, the power transmission mechanism includes a second motor 41, a first lead screw 411, a first guide rail 412, a first connecting member 413, a third motor 42, a second lead screw 421, a second connecting member 423 and a square tube 43. The square tube 43 is fixed to one side of the bowl pre-placement rack 7. The upper part of the square tube 43 is fixedly connected to one end of the first lead screw 411 through the first connecting member 413. The other end of the first lead screw 411 is connected to the motor shaft of the second motor 41. One end of the first guide rail 412 is movably connected to the first connecting member 413, and the other end of the first guide rail 412 is fixedly connected to the outer shell of the second motor 41. The second motor 41 can drive the upper part of the square tube 43 to move back and forth along the first guide rail 412 through the first lead screw 411; the lower part of the square tube 43 is fixedly connected to one end of the second lead screw 421 through the second connecting member 423. The other end of the second lead screw 421 is connected to the motor shaft of the third motor 42. One end of the second guide rail 422 is movably connected to the second connecting member 423, and the other end of the second guide rail 422 is fixedly connected to the outer shell of the third motor 42. The third motor 42 can drive the lower part of the square tube 43 to move back and forth along the second guide rail 422 through the second lead screw 421.

[0015] Further, the second motor 41 and the third motor 42 adopt stepper motors, so that the up and down movements of the square tube 43 can be kept consistent to prevent jamming.

[0016] Further, the second motor 41 and the third motor 42 in the power transmission mechanism can also be replaced by two cylinders, but the effect of using cylinders is not as good as that of using stepper motors. When there are differences in gas flow rates, the up and down movements of the square tube 43 may be inconsistent, resulting in jamming.

[0017] Further, sensors are provided at the top and / or bottom of the bowl pre-placement rack 7 for controlling the movement range of the first motor 1.

[0018] The working principle of the tableware transmission device of the present invention is as follows: The first motor 1 drives the belt to rotate, causing the bowl pre-placement rack 7 to move to the lowest position. The automated equipment places the rice bowls and chopsticks in the dishwasher at the designated positions on the bowl pre-placement rack 7 respectively. The first motor 1 drives the belt to rotate, causing the bowl pre-placement rack 7 to move upward. When the bowl pre-placement rack 7 moves upward to be level with the bowl transmission channel 6 or 1 mm to 1 cm higher, the bowl pre-placement rack 7 stops moving and remains stationary. At this time, the second motor 41 and the third motor 43 move synchronously, driving the upper and lower ends of the square tube 43 to move along the first guide rail 412 and the second guide rail 422 respectively, so that both the branch push rod 52 and the chopstick push rod can move towards the direction of the bowl transmission channel 6, enabling the rice bowls and chopsticks to be smoothly transferred from the bowl pre-placement rack 7 to the bowl transmission channel 6, thus facilitating the user to take out the rice bowls and chopsticks. The belt of the present invention does not adopt a complete circular belt, but a segmented structure, which is beneficial to the later installation of the belt 3 and the bowl pre-placement rack 7. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic structural diagram of the tableware transmission device.

[0020] Figure 2 It is a schematic structural diagram of the tableware transmission device.

[0021] Figure 3 It is a schematic structural diagram of the lifting device of the bowl transmission channel.

[0022] Figure 4 It is a schematic structural diagram of the lifting device of the bowl transmission channel.

[0023] Figure 5 It is a schematic structural diagram of the lifting device of the bowl transmission channel.

[0024] Figure 6 It is a schematic structural diagram of the lifting device of the bowl transmission channel.

[0025] Figure 7 It is a schematic structural diagram of the bowl pusher assembly.

[0026]

[0027]

[0028] The drawings will be specifically described below in conjunction with specific embodiments. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] Specific Embodiment 1:

[0030] As Figure 1 and Figure 2 shown, it is a schematic structural diagram of the tableware transmission device; as Figures 3 - 6As shown, it is a schematic structural diagram of the lifting device for the bowl transmission channel; as Figure 7 shown, it is a schematic structural diagram of the bowl pusher assembly. A tableware transmission device, which includes: a first motor 1, a roller, a belt 3, a bowl pre-placement rack 7, a bowl transmission channel 6, a power transmission mechanism, and a bowl pusher 5. It is characterized in that: the motor shaft of the first motor 1 is connected to the roller, the outside of the roller passes through the belt 3, the first end 31 of the belt 3 is fixed to the upper part of the side of the bowl pre-placement rack 7, the second end 32 of the belt 3 is fixed to the lower part of the side of the bowl pre-placement rack 7, and an upper fixed fulcrum and a lower fixed fulcrum are respectively arranged on the inner side of the belt 3. The height of the upper fixed fulcrum is higher than the highest point of the bowl pre-placement rack 7, and the height of the lower fixed fulcrum is lower than the lowest point of the bowl pre-placement rack 7. The height of the motor shaft of the first motor 1 is located between the upper fixed fulcrum and the lower fixed fulcrum. When the motor shaft of the first motor 1 rotates, it can drive the belt 3 to rotate along the upper fixed fulcrum, the roller, and the lower fixed fulcrum, thereby driving the bowl pre-placement rack 7 to move up and down. When the bowl pre-placement rack 7 moves to the bottommost end, the automatic equipment places the bowls in the dishwasher at the designated position on the bowl pre-placement rack 7, and places the chopsticks in the dishwasher at the designated position on the bowl pre-placement rack 7. When the bowl pre-placement rack 7 moves up to be flush with the position of the bowl transmission channel 6 or 1 mm to 1 cm higher, the bowl pre-placement rack 7 stops moving and remains stationary; the power transmission mechanism is connected to the bowl pusher 5, the bowl pusher 5 is arranged beside the bowl pre-placement rack 7, and the bowl pusher 5 can approach the bowl transmission channel 6 under the action of the power transmission mechanism, so that the rice bowls enter the bowl transmission channel 6 from the designated position on the bowl pre-placement rack 7. The chopstick basket 61 is fixed to the upper part of the side of the bowl pre-placement rack 7 away from the bowl pusher 5, so that when the bowl pusher 5 approaches the bowl transmission channel 6 under the action of the power transmission mechanism, the chopsticks can enter the chopstick basket 61 from the designated position on the bowl pre-placement rack 7.

[0031] The second roller 12 and the third roller 13 press against the outer side of the belt 3, enabling the belt 3 to rotate while fitting against the outer side of the first roller 11. The upper fixed fulcrum is the fourth roller 14, and the lower fixed fulcrum is the fifth roller 15. The motor shaft of the first motor 1 is connected to the first roller 11, which can reduce the energy consumption loss of the first motor 1. There is an upper protective cover 21 outside the fourth roller 14. The upper protective cover 21 is provided with two U-shaped holes 211 and a first belt perforation 212. The two roller shafts of the fourth roller 14 are respectively fixed in the two U-shaped holes 211, enabling the fourth roller 14 to rotate along the two roller shafts fixed in the U-shaped holes 211, and the belt 3 can pass through the first belt perforation 212; there is a lower protective cover 22 outside the fifth roller 15. The lower protective cover 22 is provided with two circular holes 221 and a second belt perforation 222. The two roller shafts of the fifth roller 15 are respectively fixed in the two circular holes 221, enabling the fifth roller 15 to rotate along the two roller shafts fixed in the circular holes 221, and the belt 3 can pass through the second belt perforation 222. The belt passing through the first belt perforation 212 bypasses the third roller 13, then bypasses the first roller 11, then bypasses the second roller 12 and passes through the second belt perforation 222 and then surrounds the outer side of the fifth roller 15. The purpose of using U-shaped holes 211 instead of ordinary circular holes on the fourth roller 14 is to have a micro-adjustment function.

[0032] The number of layers of the bowl transmission channel 6 is 8 layers, which can meet the bowl-using needs of ordinary families. Edge protruding guardrails are provided on the channels of each layer of the bowl transmission channel 6, which can prevent the phenomenon that the rice bowls deviate and fall when being pushed from the bowl pre-placement rack 7 onto the bowl transmission channel 6. The number of layers of the bowl pre-placement rack 7 is the same as that of the bowl transmission channel 6, and the widths and heights of the bowl pre-placement rack 7 and the bowl transmission channel 6 are the same.

[0033] The bowl pusher 5 includes a main bracket 51, branch push rods 52, and a chopstick pushing plate 53. A plurality of branch push rods 52 and the chopstick pushing plate 53 are vertically fixed on the main bracket 51. The plurality of branch push rods 52 form an array structure. One end of each branch push rod 52 is fixed to the side wall of the main bracket 51 by screws, and the other end of each branch push rod 52 extends towards the direction of the bowl transmission channel 6. The number of branch push rods 52 is equal to the number of the bowl pre-placement racks 7; the chopstick pushing plate 53 is located above the main bracket 51 and deviates from the array of the branch push rods 52. The lower part of the chopstick pushing plate 53 is located above the chopstick placement position of the top layer of the bowl pre-placement rack 7. One side of the chopstick pushing plate 53 is fixed with a chopstick pushing rod, and the direction of the chopstick pushing rod is parallel to the direction of the branch push rods 52.

[0034] The free end of the branch push rod 52 is provided with a bowl protector 521. The bowl protector 521 includes an upper convex platform 5211 and a bowl protection fence 5212. The upper convex platform 5211 can be buckled on the upper part of the bowl mouth of the rice bowl, and the bowl protection fence 5212 matches the outer side of the rice bowl. Through the bowl protector 521, the upper part of the rice bowl can be buckled, so that the rice bowl can be steadily pushed forward without being overturned.

[0035] The power transmission mechanism includes a second motor 41, a first lead screw 411, a first guide rail 412, a first connecting piece 413, a third motor 42, a second lead screw 421, a second connecting piece 423 and a square tube 43. The square tube 43 is fixed to one side of the bowl pre-placement rack 7. The upper part of the square tube 43 is fixedly connected to one end of the first lead screw 411 through the first connecting piece 413. The other end of the first lead screw 411 is connected to the motor shaft of the second motor 41. One end of the first guide rail 412 is movably connected to the first connecting piece 413, and the other end of the first guide rail 412 is fixedly connected to the outer shell of the second motor 41. The second motor 41 can drive the upper part of the square tube 43 to move back and forth along the first guide rail 412 through the first lead screw 411; the lower part of the square tube 43 is fixedly connected to one end of the second lead screw 421 through the second connecting piece 423. The other end of the second lead screw 421 is connected to the motor shaft of the third motor 42. One end of the second guide rail 422 is movably connected to the second connecting piece 423, and the other end of the second guide rail 422 is fixedly connected to the outer shell of the third motor 42. The third motor 42 can drive the lower part of the square tube 43 to move back and forth along the second guide rail 422 through the second lead screw 421.

[0036] The second motor 41 and the third motor 42 adopt stepping motors, so that the up and down movements of the square tube 43 can be kept consistent to prevent jamming.

[0037] The second motor 41 and the third motor 42 in the power transmission mechanism can also be replaced by two cylinders. However, the effect of using cylinders is not as good as that of using stepping motors. When there are differences in gas flow, the up and down movements of the square tube 43 may be inconsistent, resulting in jamming.

[0038] Sensors are arranged at the top and / or bottom of the bowl pre-placement rack 7 to control the movement range of the first motor 1.

[0039] The working principle of the tableware transmission device described above is as follows: The first motor 1 drives the belt to rotate, causing the bowl pre-placement rack 7 to move to the lowest position. The automated equipment places the rice bowls and chopsticks in the dishwasher at the designated positions on the bowl pre-placement rack 7 respectively. Then the first motor 1 drives the belt to rotate, causing the bowl pre-placement rack 7 to move upward. When the bowl pre-placement rack 7 moves upward to be level with the bowl transmission channel 6 or 1 mm to 1 cm higher, the bowl pre-placement rack 7 stops moving and remains stationary. At this time, the second motor 41 and the third motor 43 move synchronously, driving the upper and lower ends of the square tube 43 to move along the first guide rail 412 and the second guide rail 422 respectively, so that both the branch push rod 52 and the chopstick push rod can move towards the direction of the bowl transmission channel 6, enabling the rice bowls and chopsticks to be smoothly transferred from the bowl pre-placement rack 7 to the bowl transmission channel 6, thus facilitating the user to take out the rice bowls and chopsticks. The belt of the present invention does not adopt a complete circular belt, but a segmented structure, which is beneficial to the installation of the later belt 3 and the bowl pre-placement rack 7.

[0040] The above embodiments only represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation to the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention should be subject to the appended claims.

Claims

1. A tableware transmission device, which comprises: a first motor (1), a roller, a belt (3), a pre-placing rack for bowls (7), a bowl transmission channel (6), a power transmission mechanism and a bowl pusher (5), characterized in that: the motor shaft of the first motor (1) is connected to the roller, the outside of the roller passes through the belt (3), the first end (31) of the belt (3) is fixed to the upper part of the side surface of the pre-placing rack for bowls (7), the second end (32) of the belt (3) is fixed to the lower part of the side surface of the pre-placing rack for bowls (7), and an upper fixed fulcrum and a lower fixed fulcrum are respectively arranged on the inner side of the belt (3), the height of the upper fixed fulcrum is higher than the highest point of the pre-placing rack for bowls (7), the height of the lower fixed fulcrum is lower than the lowest point of the pre-placing rack for bowls (7), the height of the motor shaft of the first motor (1) is between the upper fixed fulcrum and the lower fixed fulcrum. When the motor shaft of the first motor (1) rotates, it can drive the belt (3) to rotate along the upper fixed fulcrum, the roller and the lower fixed fulcrum, thereby driving the pre-placing rack for bowls (7) to move up and down. When the pre-placing rack for bowls (7) moves to the lowest end, the automatic device places the bowls in the dishwasher at the designated position on the pre-placing rack for bowls (7), and places the chopsticks in the dishwasher at the designated position on the pre-placing rack for bowls (7). When the pre-placing rack for bowls (7) moves up to be flush with the position of the bowl transmission channel (6) or 1 mm - 1 cm higher, the pre-placing rack for bowls (7) stops moving and remains stationary; the power transmission mechanism is connected to the bowl pusher (5), the bowl pusher (5) is arranged beside the pre-placing rack for bowls (7), and the bowl pusher (5) can approach the bowl transmission channel (6) under the action of the power transmission mechanism, so that the rice bowls enter the bowl transmission channel (6) from the designated position on the pre-placing rack for bowls (7). The chopstick basket (61) is fixed to the upper part of the side of the pre-placing rack for bowls (7) away from the bowl pusher (5), so that when the bowl pusher (5) approaches the bowl transmission channel (6) under the action of the power transmission mechanism, the chopsticks can enter the chopstick basket (61) from the designated position on the pre-placing rack for bowls (7).

2. The tableware transmission device according to claim 1, characterized in that: The second roller (12) and the third roller (13) press on the outside of the belt (3), so that the belt (3) can rotate while fitting on the outside of the first roller (11).

3. The tableware transmission device according to claim 1, characterized in that: The upper fixed fulcrum is the fourth roller (14), and the lower fixed fulcrum is the fifth roller (15).

4. The tableware transmission device according to claim 3, characterized in that: A upper protective cover (21) is provided outside the fourth roller (14). Two U-shaped holes (211) and a first belt perforation (212) are provided on the upper protective cover (21). Two roller shafts of the fourth roller (14) are respectively fixed in the two U-shaped holes (211), so that the fourth roller (14) can rotate along the two roller shafts fixed in the U-shaped holes (211), and the belt (3) can pass through the first belt perforation (212); A lower protective cover (22) is provided outside the fifth roller (15). Two circular holes (221) and a second belt perforation (222) are provided on the lower protective cover (22). Two roller shafts of the fifth roller (15) are respectively fixed in the two circular holes (221), so that the fifth roller (15) can rotate along the two roller shafts fixed in the circular holes (221), and the belt (3) can pass through the second belt perforation (222). The belt passing through the first belt perforation (212) bypasses the third roller (13), then bypasses the first roller (11), then bypasses the second roller (12) and passes through the second belt perforation (222) and then surrounds the outside of the fifth roller (15).

5. The tableware transmission device according to claim 1, characterized in that: The number of layers of the bowl transmission channel (6) is multiple layers.

6. The tableware transmission device according to claim 1, characterized in that: Edge protruding guardrails are provided on the channels of each layer of the bowl transmission channel (6).

7. The tableware transmission device according to claim 1, characterized in that: The number of layers of the bowl pre-placement rack (7) is the same as the number of layers of the bowl transmission channel (6), and the width and height of the bowl pre-placement rack (7) and the bowl transmission channel (6) are the same.

8. The tableware transmission device according to claim 1, characterized in that: The bowl pusher (5) includes a main bracket (51), branch push rods (52) and a chopstick pushing plate (53). A plurality of branch push rods (52) and a chopstick pushing plate (53) are vertically fixed on the main bracket (51). The plurality of branch push rods (52) form an array structure. One end of each branch push rod (52) is fixed to the side wall of the main bracket (51) by screws, and the other end of each branch push rod (52) extends towards the direction of the bowl transmission channel (6). The number of branch push rods (52) is equal to the number of the bowl pre-placement racks (7); The chopstick pushing plate (53) is located above the main bracket (51) and deviates from the array of the branch push rods (52). The lower part of the chopstick pushing plate (53) is located above the chopstick placement position of the uppermost layer of the bowl pre-placement rack (7). A chopstick pushing rod is fixed on one side of the chopstick pushing plate (53), and the direction of the chopstick pushing rod is parallel to the direction of the branch push rods (52).

9. The tableware transmission device according to claim 8, characterized in that: The free end of the branch push rod (52) is provided with a bowl protector (521). The bowl protector (521) includes an upper convex platform (5211) and a bowl protection fence (5212). The upper convex platform (5211) can be buckled on the upper part of the bowl mouth of the rice bowl, and the bowl protection fence (5212) matches the outer side of the rice bowl. The upper part of the rice bowl can be buckled by the bowl protector (521), so that the rice bowl can be smoothly pushed forward.

10. The tableware transmission device according to claim 1, characterized in that: The power transmission mechanism includes a second motor (41), a first lead screw (411), a first guide rail (412), a first connector (413), a third motor (42), a second lead screw (421), a second connector (423) and a square tube (43). The square tube (43) is fixed on one side of the bowl pre-placement rack (7). The upper part of the square tube (43) is fixedly connected to one end of the first lead screw (411) through the first connector (413). The other end of the first lead screw (411) is connected to the motor shaft of the second motor (41). One end of the first guide rail (412) is movably connected to the first connector (413), and the other end of the first guide rail (412) is fixedly connected to the outer shell of the second motor (41). The second motor (41) can drive the upper part of the square tube (43) to move back and forth along the first guide rail (412) through the first lead screw (411); the lower part of the square tube (43) is fixedly connected to one end of the second lead screw (421) through the second connector (423). The other end of the second lead screw (421) is connected to the motor shaft of the third motor (42). One end of the second guide rail (422) is movably connected to the second connector (423), and the other end of the second guide rail (422) is fixedly connected to the outer shell of the third motor (42). The third motor (42) can drive the lower part of the square tube (43) to move back and forth along the second guide rail (422) through the second lead screw (421).

11. The tableware transmission device according to claim 10, characterized in that: The second motor (41) and the third motor (42) adopt stepper motors.

12. The tableware transmission device according to claim 1, characterized in that: Sensors are arranged at the top and / or bottom of the bowl pre-placement rack (7) for controlling the movement range of the first motor (1).

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