Feeding and discharging mechanism

Abstract

The utility model relates to the technical field of measuring equipment, and discloses a feeding and discharging mechanism which comprises a mechanism main frame, a bottom transmission assembly and a conveying opening assembly, the bottom transmission assembly comprises a bottom driving piece, a bottom transmission bottom plate and bottom transmission wheels, and the bottom driving piece is in transmission connection with the bottom transmission wheels; the bottom transmission wheel is rotationally connected to the bottom transmission bottom plate, and the bottom transmission bottom plate is connected to the mechanism main frame. The conveying opening assembly comprises blowing nozzles, a first transmission frame and a second transmission frame, the first transmission frame and the second transmission frame are connected to the mechanism main frame, an access channel is formed between the first transmission frame and the second transmission frame, the bottom transmission wheel is located below the access channel correspondingly, and the first transmission frame and the second transmission frame are connected with the blowing nozzles correspondingly. The blowing nozzle faces the inlet and outlet channel and is located on one side of the inlet and outlet channel. According to the feeding and discharging mechanism disclosed by the utility model, residual moisture on the surface of the target material is removed, so that the surface of the target material is in a dry state.

Description

Technical Field

[0001] The utility model relates to the technical field of measuring equipment, in particular to a loading and unloading mechanism. Background Art

[0002] Existing application number 202221835612.9 A large-size ceramic target density measurement device, when measuring the density of the target, after the wet weight is measured, the water attached to the surface of the target cannot be automatically wiped off in time. At the same time, the residual water on the surface of the target may contain impurities, which may be introduced into the material during the target production process, affecting the purity of the target. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. The utility model provides a loading and unloading mechanism, which can remove the residual moisture on the surface of the target material, make the surface of the target material dry, and improve the cleanliness of the surface of the target material.

[0004] In order to achieve the above-mentioned purpose, the utility model provides a loading and unloading mechanism, including a mechanism main frame, a bottom transmission assembly and a conveying port assembly, wherein the bottom transmission assembly includes a bottom driving member, a bottom transmission bottom plate and a bottom transmission wheel for carrying a target material and being transmission-connected to the target material, wherein the bottom driving member is transmission-connected to the bottom transmission wheel, the bottom transmission wheel is rotationally connected to the bottom transmission bottom plate, and the bottom transmission bottom plate is connected to the mechanism main frame;

[0005] The conveying port assembly includes a blowing nozzle and a first transmission frame and a second transmission frame arranged opposite to each other, the first transmission frame and the second transmission frame are respectively connected to the main frame of the mechanism, an inlet and outlet channel is formed between the first transmission frame and the second transmission frame, the bottom transmission wheel is located below the corresponding inlet and outlet channel, the first transmission frame and the second transmission frame are respectively connected to the blowing nozzle, the blowing nozzle is arranged toward the inlet and outlet channel, and is located on one side of the inlet and outlet channel.

[0006] As a preferred solution, the blowing nozzle includes a first nozzle and a second nozzle, the first nozzle is arranged toward one end of the inlet and outlet channel, and the second nozzle is arranged toward the other end of the inlet and outlet channel.

[0007] As a preferred solution, a plurality of the blowing nozzles are provided, and the plurality of blowing nozzles are spaced apart along the height direction of the first transmission frame and the second transmission frame.

[0008] As a preferred embodiment, the transmission port assembly also includes a transmission port transmission wheel, and the first transmission frame and the second transmission frame are respectively rotatably connected to the transmission port transmission wheel on one side of the entry and exit channel, and the outer peripheral surface of the transmission port transmission wheel is arranged toward the entry and exit channel.

[0009] As a preferred solution, the outer peripheral surface of the transmission wheel at the transmission port is wrapped with a soft rubber film.

[0010] As a preferred embodiment, the conveying port assembly has a first direction, the entry and exit channel extends along the first direction, the conveying port assembly also includes a transmission port bracket extending along the first direction, the first transmission frame and the second transmission frame are respectively connected to the transmission port bracket on one side facing the entry and exit channel, the transmission port transmission wheel is rotatably connected to the transmission port bracket, an end face of the transmission port bracket facing the entry and exit channel is a bracket end face, and the soft rubber sheet protrudes from the bracket end face toward the entry and exit channel.

[0011] As a preferred solution, a plurality of the transmission port transmission wheels are connected to the transmission port bracket at intervals along the first direction.

[0012] As a preferred embodiment, the conveying port assembly also includes a nozzle bracket, the first transmission frame and the second transmission frame are respectively connected to the nozzle bracket, the end of the nozzle bracket extending toward the transmission port bracket is a nozzle connecting end, and the blowing nozzle is connected to the nozzle connecting end.

[0013] As a preferred embodiment, the transmission port assembly has a second direction intersecting with the first direction, and the transmission port assembly also includes a transmission port driving member arranged along the second direction, the mechanism main frame is provided with a first transmission port connecting surface and a second transmission port connecting surface arranged opposite to each other, the first transmission frame is connected to the first transmission port connecting surface through the transmission port driving member, and the second transmission frame is connected to the second transmission port connecting surface through the transmission port driving member, the transmission port driving member drives the first transmission frame and the second transmission frame to move toward the direction of the entry and exit channel, or the transmission port driving member drives the first transmission frame and the second transmission frame to move in a direction away from the entry and exit channel.

[0014] As a preferred solution, the bottom transmission wheel includes a bottom driving wheel, a bottom driven wheel and a bottom synchronous belt, the bottom driving member is drivingly connected to the bottom driving wheel, and the bottom driven wheel is drivingly connected to the bottom driving wheel through the bottom synchronous belt.

[0015] Compared with the prior art, the loading and unloading mechanism of the utility model embodiment has the following beneficial effects: the first transmission frame and the second transmission frame are respectively connected to the main frame of the mechanism, and the main frame of the mechanism supports the first transmission frame and the second transmission frame. An inlet and outlet channel is formed between the first transmission frame and the second transmission frame, and the target material is placed in the inlet and outlet channel when the density is measured. The first transmission frame and the second transmission frame limit the target material, and the target material is carried by the bottom transmission wheel below the inlet and outlet channel. When the bottom transmission wheel rotates, the target material is pushed to move to one end of the inlet and outlet channel, so that the target material enters the target material density measurement assembly for density measurement. The air blowing nozzle is arranged toward the inlet and outlet channel. When the target material passes through the inlet and outlet channel, the air blowing nozzle is started to remove dust on the surface of the target material and reduce the pollution of water in the water tank of the density measurement assembly. When the target material completes the wet weight weighing, the bottom transmission wheel rotates in the opposite direction to move the target material to the other end of the inlet and outlet channel, and the air blowing nozzle is started again to blow away the residual moisture remaining on the surface of the target material, thereby achieving the removal of the residual moisture on the surface of the target material, making the surface of the target material in a dry state, and improving the cleanliness of the surface of the target material. At the same time, the air blowing nozzle is located on one side of the inlet and outlet channel to avoid interference of the target material during the movement of the inlet and outlet channel. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the assembly structure of the embodiment of the utility model, a water tank and a density measurement component.

[0017] Figure 2 This utility model embodiment Figure 1 Schematic diagram of the enlarged structure at K in FIG.

[0018] Figure 3 It is a structural schematic diagram of a delivery port assembly according to an embodiment of the utility model.

[0019] Figure 4 This utility model embodiment Figure 3 Schematic diagram of the enlarged structure at L in FIG.

[0020] Figure 5 It is a structural schematic diagram of the bottom transmission assembly and the main frame of the mechanism according to an embodiment of the utility model.

[0021] Figure 6 It is a structural schematic diagram of the bottom transmission assembly of an embodiment of the utility model.

[0022] In the figure:

[0023] 140, bottom transmission assembly; 141, bottom driving member; 142, bottom transmission bottom plate; 143, bottom transmission wheel; 144, bottom driving wheel; 145, bottom driven wheel; 146, bottom synchronous belt;

[0024] 150, transmission port assembly; 151, air blowing nozzle; 152, first nozzle; 153, second nozzle; 154, nozzle bracket; 155, nozzle connecting end; 156, first transmission frame; 157, second transmission frame; 158, inlet and outlet channel; 159, transmission port transmission wheel; 160, transmission port bracket; 161, soft film; 162, transmission port driving member; 163, bracket end face;

[0025] 170. Mechanism main frame; 171. First transmission port connection surface; 172. Second transmission port connection surface; 173. Water tank; 174. Density measurement component;

[0026] X, first direction; Y, second direction. DETAILED DESCRIPTION

[0027] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0028] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like used in the present invention to indicate the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0029] In the description of the present invention, it should be understood that the terms "connected", "connected", "fixed" and the like used in the present invention 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 a welding connection; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. 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] like Figures 1 to 6As shown, a loading and unloading mechanism of a preferred embodiment of the utility model comprises a main frame 170, a bottom transmission assembly 140 and a conveying port assembly 150, the bottom transmission assembly 140 comprises a bottom driving member 141, a bottom transmission bottom plate 142 and a bottom transmission wheel 143 for carrying a target material and being transmission-connected to the target material, the bottom driving member 141 is transmission-connected to the bottom transmission wheel 143, the bottom transmission wheel 143 is rotationally connected to the bottom transmission bottom plate 142, and the bottom transmission bottom plate 142 is connected to the main frame 170;

[0031] The conveying port assembly 150 includes a blowing nozzle 151 and a first transmission frame 156 and a second transmission frame 157 arranged opposite to each other. The first transmission frame 156 and the second transmission frame 157 are respectively connected to the main frame 170 of the mechanism. An inlet and outlet channel 158 is formed between the first transmission frame 156 and the second transmission frame 157. The bottom transmission wheel 143 is located below the inlet and outlet channel 158. The first transmission frame 156 and the second transmission frame 157 are respectively connected to the blowing nozzle 151. The blowing nozzle 151 is set toward the inlet and outlet channel 158 and is located on one side of the inlet and outlet channel 158.

[0032] In the loading and unloading mechanism of the utility model, the first transmission frame 156 and the second transmission frame 157 are respectively connected to the main frame 170 of the mechanism, and the main frame 170 of the mechanism supports the first transmission frame 156 and the second transmission frame 157. An inlet and outlet channel 158 is formed between the first transmission frame 156 and the second transmission frame 157. When the density of the target material is measured, it is placed in the inlet and outlet channel 158. The first transmission frame 156 and the second transmission frame 157 limit the target material. The target material is carried by the bottom transmission wheel 143 below the inlet and outlet channel 158. When the bottom transmission wheel 143 rotates, it pushes the target material to move to one end of the inlet and outlet channel 158, so that the target material enters the target material density measurement component 174 for density measurement. The air blowing nozzle 151 is arranged toward the inlet and outlet channel 158. When the target material passes through the inlet and outlet channel 158, the air blowing nozzle 151 is started to remove dust on the surface of the target material and reduce the pollution of water in the water tank 173 of the density measurement component 174. When the wet weight of the target is weighed, the bottom transmission wheel 143 rotates in the opposite direction to move the target to the other end of the inlet and outlet channel 158, and the air blowing nozzle 151 is started again to blow away the residual moisture remaining on the surface of the target, thereby removing the residual moisture on the surface of the target, making the surface of the target dry and improving the cleanliness of the surface of the target. At the same time, the air blowing nozzle 151 is located on one side of the inlet and outlet channel 158 to prevent interference of the target during the movement of the inlet and outlet channel 158.

[0033] As one embodiment, Figure 1 to Figure 2 As shown, the loading and unloading mechanism of the present invention is connected to one side of the water tank 173 of the density measuring assembly 174 .

[0034] Further, such as Figure 3 to Figure 4As shown, the blowing nozzle 151 includes a first nozzle 152 and a second nozzle 153. The first nozzle 152 is arranged toward one end of the inlet and outlet channel 158, and the second nozzle 153 is arranged toward the other end of the inlet and outlet channel 158. The first transmission frame 156 and the second transmission frame 157 are respectively connected to the first nozzle 152 and the second nozzle 153. The end of the first nozzle 152 facing the inlet and outlet channel 158 is an end of the water tank 173 away from the density measurement component 174. Before the target enters the inlet and outlet channel 158 for density measurement, the dust on the surface of the target is blown off by the first nozzle 152, so that the dust moves in a direction away from the water tank 173, thereby reducing the pollution of water in the water tank 173. The other end of the second nozzle 153 facing the inlet and outlet channel 158 is an end of the water tank 173 facing the density measurement component 174. After the target completes the density measurement, the residual water on the surface of the target is blown off by the second nozzle 153, so that the residual water falls into the water tank 173.

[0035] Further, such as Figure 3 As shown, a plurality of air blowing nozzles 151 are provided, and the plurality of air blowing nozzles 151 are spaced apart along the height direction of the first transmission frame 156 and the second transmission frame 157, respectively, so as to increase the overall air blowing range of the air blowing nozzles 151 in the height direction and improve the efficiency of removing dust and residual moisture from the surface of the target material.

[0036] Further, such as Figure 3 to Figure 4 As shown, the transfer port assembly 150 further includes a transfer port transmission wheel 159, and the first transmission frame 156 and the second transmission frame 157 are respectively connected to the transfer port transmission wheel 159 in rotation toward one side of the inlet and outlet channel 158, and the outer peripheral surface of the transfer port transmission wheel 159 is arranged toward the inlet and outlet channel 158. When the target material moves in the inlet and outlet channel 158, the surface of the target material contacts the outer peripheral surface of the transfer port transmission wheel 159, so that the transfer port transmission wheel 159 rotates, and the target material moves more smoothly in the inlet and outlet channel 158.

[0037] Furthermore, the outer peripheral surface of the transmission wheel 159 is wrapped with a soft film 161. The soft film 161 is used to achieve soft contact with the surface of the target material, thereby preventing the target material from being hard-collided with the transmission wheel 159 and causing damage to the surface of the target material.

[0038] Further, such as Figure 3 to Figure 4As shown, the transfer port assembly 150 has a first direction X, the inlet and outlet channel 158 extends along the first direction X, and the transfer port assembly 150 further includes a transmission port bracket 160 extending along the first direction X, the first transmission frame 156 and the second transmission frame 157 are respectively connected to the transmission port bracket 160 on one side facing the inlet and outlet channel 158, the transmission port transmission wheel 159 is rotatably connected to the transmission port bracket 160, one end face of the transmission port bracket 160 facing the inlet and outlet channel 158 is the bracket end face 163, and the soft rubber sheet 161 protrudes from the bracket end face 163 toward the inlet and outlet channel 158. The transmission port transmission wheel 159 is fixed to the first transmission frame 156 and the second transmission frame 157 through the transmission port bracket 160, and at the same time, the soft rubber sheet 161 protrudes from the bracket end face 163 toward the inlet and outlet channel 158, so as to ensure that the soft rubber sheet 161 achieves soft contact with the surface of the target material, and avoids the target material from being hard-collided with the transmission port bracket 160, thereby causing damage to the target material surface.

[0039] Further, such as Figure 3 to Figure 4 As shown, a plurality of transmission port transmission wheels 159 are connected to the transmission port bracket 160 at intervals along the first direction X, so that the side of the target material contacts the plurality of transmission port transmission wheels 159 at the same time, thereby avoiding a hard collision of the side of the target material.

[0040] As one embodiment, Figure 3 to Figure 4 As shown, the transmission port bracket 160 is L-shaped.

[0041] Further, such as Figure 3 to Figure 4 As shown, the conveying port assembly 150 further includes a nozzle bracket 154, a first transmission frame 156 and a second transmission frame 157 are respectively connected to the nozzle bracket 154, and one end of the nozzle bracket 154 extending toward the transmission port bracket 160 is a nozzle connection end 155, and the air blowing nozzle 151 is connected to the nozzle connection end 155. The first transmission frame 156 and the second transmission frame 157 are respectively connected to the air blowing nozzle 151 through the nozzle bracket 154, and the air blowing nozzle 151 extends toward one side of the transmission port bracket 160, so as to avoid the first transmission frame 156 and the second transmission member blocking the air blowing range of the air blowing nozzle 151, and ensure that the air blowing of the air blowing nozzle 151 can be blown to the target material in the inlet and outlet channel 158, and ensure the air blowing efficiency of the air blowing nozzle 151. The nozzle bracket 154 and the air blowing nozzle 151 are both located outside the inlet and outlet channel 158, so as to ensure that there is no movement interference with the target material in the inlet and outlet channel 158.

[0042] Further, such as Figures 1 to 3As shown, the transfer port assembly 150 has a second direction Y intersecting with the first direction X, and the transfer port assembly 150 further includes a transfer port driving member 162 arranged along the second direction Y. The mechanism main frame 170 is provided with a first transfer port connecting surface 171 and a second transfer port connecting surface 172 arranged oppositely. The first transmission frame 156 is connected to the first transmission port connecting surface 171 through the transfer port driving member 162, and the second transmission frame 157 is connected to the second transmission port connecting surface 172 through the transfer port driving member 162. The transfer port driving member 162 drives the first transmission frame 156 and the second transmission frame 157 to move toward the inlet and outlet channel 158, or the transfer port driving member 162 drives the first transmission frame 156 and the second transmission frame 157 to move away from the inlet and outlet channel 158. Through the arrangement of the transfer port driving member 162, the first transmission frame 156 and the second transmission frame 157 arranged oppositely can be moved away from or close to each other, so as to adjust the width of the inlet and outlet channel 158 in the second direction Y, so that the inlet and outlet channel 158 is suitable for targets of different thicknesses.

[0043] As one embodiment, the first direction X and the second direction Y are perpendicular to each other.

[0044] As one embodiment, Figure 3 to Figure 4 As shown, the transmission port driving member 162 is a cylinder.

[0045] Further, such as Figures 5 and 6 As shown, the bottom transmission wheel 143 includes a bottom driving wheel 144, a bottom driven wheel 145 and a bottom synchronous belt 146. The bottom driving member 141 is connected to the bottom driving wheel 144, and the bottom driven wheel 145 is connected to the bottom driving wheel 144 through the bottom synchronous belt 146. The bottom driving member 141 drives the bottom driving wheel 144 to rotate, and the bottom driving wheel 144 drives the bottom driven wheel 145 to rotate through the bottom synchronous belt 146. The bottom driven wheel 145 is located at the corresponding lower part of the inlet and outlet channel 158, and the target material is driven to move through the bottom driven wheel 145.

[0046] As one embodiment, Figures 5 and 6 As shown, the plurality of bottom driven wheels 145 extend along the second direction Y and are arranged at intervals along the first direction X. The plurality of bottom driven wheels 145 are respectively connected to the bottom driving wheels 144 in transmission.

[0047] In summary, the embodiment of the utility model provides a loading and unloading mechanism, wherein the first transmission frame 156 and the second transmission frame 157 are respectively connected to the mechanism main frame 170, and the mechanism main frame 170 supports the first transmission frame 156 and the second transmission frame 157. An inlet and outlet channel 158 is formed between the first transmission frame 156 and the second transmission frame 157, and the target material is placed in the inlet and outlet channel 158 when the density is measured. The first transmission frame 156 and the second transmission frame 157 limit the target material, and the target material is carried by the bottom transmission wheel 143 below the inlet and outlet channel 158. When the bottom transmission wheel 143 rotates, the target material is pushed to move to one end of the inlet and outlet channel 158, so that the target material enters the target material density measurement assembly 174 for density measurement. The air blowing nozzle 151 is arranged toward the inlet and outlet channel 158. When the target material passes through the inlet and outlet channel 158, the air blowing nozzle 151 is started to remove dust on the surface of the target material and reduce the pollution of water in the water tank 173 of the density measurement assembly 174. When the wet weight of the target is weighed, the bottom transmission wheel 143 rotates in the opposite direction to move the target to the other end of the inlet and outlet channel 158, and the air blowing nozzle 151 is started again to blow away the residual moisture remaining on the surface of the target, thereby removing the residual moisture on the surface of the target, making the surface of the target dry and improving the cleanliness of the surface of the target. At the same time, the air blowing nozzle 151 is located on one side of the inlet and outlet channel 158 to prevent interference of the target during the movement of the inlet and outlet channel 158.

[0048] The above are only preferred implementations of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. A loading and unloading mechanism, characterized in that: It includes a main frame, a bottom transmission assembly and a conveying port assembly, wherein the bottom transmission assembly includes a bottom driving member, a bottom transmission bottom plate and a bottom transmission wheel for carrying a target material and being transmission-connected to the target material, wherein the bottom driving member is transmission-connected to the bottom transmission wheel, the bottom transmission wheel is rotationally connected to the bottom transmission bottom plate, and the bottom transmission bottom plate is connected to the main frame; The conveying port assembly includes a blowing nozzle and a first transmission frame and a second transmission frame arranged opposite to each other, the first transmission frame and the second transmission frame are respectively connected to the main frame of the mechanism, an inlet and outlet channel is formed between the first transmission frame and the second transmission frame, the bottom transmission wheel is located below the corresponding inlet and outlet channel, the first transmission frame and the second transmission frame are respectively connected to the blowing nozzle, the blowing nozzle is arranged toward the inlet and outlet channel, and is located on one side of the inlet and outlet channel.

2. The loading and unloading mechanism according to claim 1 is characterized in that: The air blowing nozzle includes a first nozzle and a second nozzle, the first nozzle is arranged toward one end of the inlet and outlet channel, and the second nozzle is arranged toward the other end of the inlet and outlet channel.

3. The loading and unloading mechanism according to claim 1 is characterized in that: A plurality of the air blowing nozzles are provided, and the plurality of air blowing nozzles are respectively arranged at intervals along the height direction of the first transmission frame and the second transmission frame.

4. The loading and unloading mechanism according to claim 1 is characterized in that: The transfer port assembly also includes a transmission port transmission wheel. The first transmission frame and the second transmission frame are respectively rotatably connected to the transmission port transmission wheel on one side facing the entry and exit channel. The outer peripheral surface of the transmission port transmission wheel is arranged toward the entry and exit channel.

5. The loading and unloading mechanism according to claim 4 is characterized in that: The outer peripheral surface of the transmission wheel at the transmission port is wrapped with a soft rubber sheet.

6. The loading and unloading mechanism according to claim 5, characterized in that: The conveying port assembly has a first direction, and the entrance and exit channel extends along the first direction. The conveying port assembly also includes a transmission port bracket extending along the first direction. The first transmission frame and the second transmission frame are respectively connected to the transmission port bracket on one side facing the entrance and exit channel. The transmission port transmission wheel is rotatably connected to the transmission port bracket. An end face of the transmission port bracket facing the entrance and exit channel is a bracket end face, and the soft rubber sheet protrudes from the bracket end face toward the entrance and exit channel.

7. The loading and unloading mechanism according to claim 6 is characterized in that: A plurality of transmission port transmission wheels are connected to the transmission port bracket at intervals along the first direction.

8. The loading and unloading mechanism according to claim 6, characterized in that: The transfer port assembly also includes a nozzle bracket, the first transmission frame and the second transmission frame are respectively connected to the nozzle bracket, one end of the nozzle bracket extending toward the transmission port bracket is a nozzle connecting end, and the blowing nozzle is connected to the nozzle connecting end.

9. The loading and unloading mechanism according to claim 1, characterized in that: The conveying port assembly has a second direction intersecting with the first direction, and the conveying port assembly also includes a transmission port driving member arranged along the second direction, the mechanism main frame is provided with a first transmission port connecting surface and a second transmission port connecting surface arranged oppositely, the first transmission frame is connected to the first transmission port connecting surface through the transmission port driving member, and the second transmission frame is connected to the second transmission port connecting surface through the transmission port driving member, and the transmission port driving member drives the first transmission frame and the second transmission frame to move toward the direction of the entry and exit channel, or the transmission port driving member drives the first transmission frame and the second transmission frame to move in a direction away from the entry and exit channel.

10. The loading and unloading mechanism according to claim 1, characterized in that: The bottom transmission wheel comprises a bottom driving wheel, a bottom driven wheel and a bottom synchronous belt. The bottom driving member is connected to the bottom driving wheel through transmission. The bottom driven wheel is connected to the bottom driving wheel through the bottom synchronous belt.

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