Dual-station conveyor for auxiliary unloading

Abstract

The present invention discloses a double-station conveyor for assisting unloading, comprising: a conveyor, at least two lifting and positioning support seats, a lifting drive mechanism and two supporting rods. The end surface of the conveyor belt is protruded with a plurality of conveying blocks, and the plurality of conveying blocks are arranged at intervals along the extension direction of the conveyor belt. The two lifting and positioning support seats are arranged on opposite sides of the horizontal direction of the conveyor belt. The lifting drive mechanism is drivingly connected to the lifting and positioning support seats. The two supporting rods are arranged on opposite sides of the horizontal direction of the conveyor belt; the horizontal height of the top surface of the supporting rod is greater than the horizontal height of the end surface of the conveyor belt. When the lifting and positioning support seat is in a high horizontal position, the lifting and positioning support seat can support the product and make the product suspend directly above the supporting rod; when the lifting and positioning support seat is in a low horizontal position, the supporting rod can support the product and make the product suspend directly above the lifting and positioning support seat. It can assist the manipulator in unloading, thereby improving the efficiency of producing storage cabinets.

Description

Technical Field

[0001] The invention relates to the technical field of conveyors, in particular to a double-station conveyor for auxiliary unloading. Background Art

[0002] The production line cannot do without the assistance of conveyors, and the main purpose of conveyors is to connect the processes, that is, conveyors are rarely used to assist in unloading. It can be understood that what comes out of the unloading station is almost or already a product.

[0003] What is important is that at present, when assembling storage cabinets through robots, although robots can improve assembly efficiency, it is generally difficult to achieve full mechanization. The main reason is that the material cutting efficiency is slow. Summary of the invention

[0004] In order to overcome the deficiencies of the prior art, an object of the present invention is to provide a double-station conveyor for auxiliary unloading, which can assist a robot in unloading materials, thereby improving the efficiency of producing storage cabinets.

[0005] The purpose of the present invention is achieved by the following technical solutions:

[0006] Auxiliary unloading double-station conveyor, including:

[0007] The conveyor has a conveyor belt, wherein the conveyor belt has a loading station and an unloading station arranged in sequence along the conveying direction of the conveyor belt, and the end surface of the conveyor belt is protruded with a plurality of conveying blocks, and the plurality of conveying blocks are arranged at intervals along the extending direction of the conveyor belt;

[0008] At least two lifting and positioning support seats are arranged at the loading station and respectively arranged on opposite sides of the conveyor belt in the horizontal direction; the lifting and positioning support seats are used for positioning the product to temporarily support the product;

[0009] A lifting drive mechanism is disposed at the loading station and is drivingly connected to the lifting and positioning support seat, and is used to drive the lifting and positioning support seat to perform lifting motion;

[0010] Two supporting rods, which pass through the loading station and the unloading station and are respectively arranged on opposite sides of the conveyor belt in the horizontal direction, the supporting rods are used to support the products; the horizontal height of the top surface of the supporting rod is greater than the horizontal height of the end surface of the conveyor belt;

[0011] Among them, when the lifting and positioning support seat is in a high level position, the lifting and positioning support seat can support the product and make the product suspended directly above the supporting rod; when the lifting and positioning support seat is in a low level position, the supporting rod can support the product and make the product suspended above the lifting and positioning support seat, so that the conveying block can transmit the product when following the conveyor belt.

[0012] Furthermore, the conveyor is provided with a plurality of pushing cylinders, which are respectively arranged on opposite sides of the conveyor belt in the horizontal direction. The pushing cylinders can push upward so that the products supported by the lifting and positioning support seat can be loosened from the lifting and positioning support seat.

[0013] Furthermore, the conveyor is provided with a plurality of transverse plates located below the conveyor belt, and the plurality of transverse plates are arranged at intervals; a screw extending in the direction of gravity is connected to the bottom of the transverse plate; the double-station conveyor for auxiliary unloading also includes a power bearing plate, the power bearing plate is provided with a through hole, the screw passes downward through the through hole and is threadedly connected with a nut, and the power bearing plate is supported by the nut; the lifting drive mechanism includes a lifting cylinder fixed to the power bearing plate, a lifting horizontal cross bar connected to the output rod of the lifting cylinder, a plurality of lifting horizontal vertical rods fixedly connected to the lifting horizontal cross bar and extending in the conveying direction of the conveyor belt, a plurality of lifting linkage rods fixedly connected to the lifting horizontal vertical rod and extending in the height direction, and a linkage load-bearing plate fixedly connected to the top end of the lifting linkage rod; the linkage load-bearing plates are provided with at least two, and at least two of the linkage load-bearing plates are respectively arranged on opposite sides of the horizontal direction of the conveyor belt, and the push cylinder and the lifting positioning support seat are both supported and linked by the linkage load-bearing plates.

[0014] Furthermore, the transverse plate is provided with a guide through hole, and the lifting linkage rod is movably inserted into the guide through hole.

[0015] Furthermore, the double-station conveyor for auxiliary unloading also includes two guide limit plates arranged on the conveyor, and the two guide limit plates are respectively arranged on opposite sides of the horizontal direction of the conveyor belt; the lifting and positioning support seat and the supporting rod are both arranged between the two guide limit plates.

[0016] Furthermore, the inner side wall of the guide and limiting plate facing the product is made of plastic material or leather or wood material.

[0017] Furthermore, the guide and limiting plate includes a first metal strip and a first plastic strip, the first plastic strip is provided with a first plugging groove extending along its length direction, and the first metal strip is inserted into the first plugging groove along the length direction of the first plastic strip.

[0018] Furthermore, the top of the supporting rod is made of plastic material, leather or wood material.

[0019] Furthermore, the supporting rod includes a second metal strip and a second plastic strip, the second plastic strip is provided with a second plugging groove extending along its length direction, and the second metal strip is inserted into the second plugging groove along the length direction of the second plastic strip.

[0020] Furthermore, a plurality of lifting and positioning support seats are enclosed to form a rectangular frame structure, and the lifting and positioning support seat is provided with a positioning groove, the outer wall of the positioning groove is a first limiting wall, and the inner wall of the positioning groove is a second limiting arm, so that the trajectory of the positioning groove is an L-shaped structure.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. By setting a loading station on the conveyor, that is, setting a lifting and positioning support seat on the conveyor, the product can be positioned and supported by the lifting and positioning support seat, so that the robot can send the product to the conveyor and improve the efficiency of the production of storage cabinets; and then the product is sent from the loading station to the unloading station through the conveyor block of the conveyor belt, so as to ensure that the workers can remove the product from the conveyor at a risk-free position to avoid production safety accidents.

[0023] 2. In addition, when the lifting and positioning support seat is in a high level position, the product is positioned and supported, thereby replacing the supporting rod to bear the force to protect the supporting rod; when the lifting and positioning support seat is in a low level position, the product is supported by the supporting rod; in this way, the product only bears the lateral pushing force of the conveyor belt, but not the supporting force of the conveyor belt, so the conveyor belt can be better protected and maintained, so that the conveyor belt can maintain stability and low wear for a longer time during the process of being sent from the loading station to the unloading station. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the double-station conveyor for auxiliary unloading of the present invention;

[0025] Figure 2 for Figure 1 Another perspective of the picture;

[0026] Figure 3 for Figure 2 A local enlarged view of point A;

[0027] Figure 4 It is a structural schematic diagram of the supporting rod (in a disassembled state);

[0028] Figure 5 for Figure 1 Another perspective of the picture;

[0029] Figure 6 for Figure 5 A partial enlarged view of point B.

[0030] In the figure: 1. conveyor; 11. conveyor belt; 111. loading station; 112. unloading station; 12. conveying block; 13. cross plate; 131. guide through hole; 14. screw; 15. power bearing plate; 16. guide limit plate; 161. first metal strip; 162. first plastic strip; 1621. first plug-in slot; 2. lifting and positioning support seat; 21. positioning slot; 3. lifting drive mechanism; 31. lifting cylinder; 32. lifting horizontal cross bar; 33. lifting horizontal vertical bar; 34. lifting linkage rod; 35. linkage load-bearing plate; 4. supporting rod; 41. second metal strip; 42. second plastic strip; 5. push cylinder. DETAILED DESCRIPTION

[0031] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0032] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element, or there may be an element centered thereon. When an element is considered to be "connected to" another element, it may be directly connected to the other element, or there may be an element centered thereon. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0033] Unless otherwise defined, all technical terms and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0034] See also Figure 1 A preferred embodiment of the double-station conveyor for auxiliary unloading of the present invention comprises: a conveyor 1, at least two lifting and positioning support seats 2, a lifting drive mechanism 3 and two supporting rods 4.

[0035] See also Figure 1 The conveyor 1 has a conveyor belt 11, and the conveyor belt 11 has a loading station 111 and a unloading station 112 arranged in sequence along the conveying direction of the conveyor belt 11. The end surface of the conveyor belt 11 protrudes with multiple conveyor blocks 12, and the multiple conveyor blocks 12 are arranged at intervals along the extension direction of the conveyor belt 11. At that time, on the basis of the conveyor blocks 12 following the conveyor belt 11 in linkage, the products (such as storage cabinets) will be pushed by the thrust of the conveyor blocks 12, so as to be conveyed on the conveyor 1.

[0036] See also Figure 1 Two lifting and positioning support seats 2 are arranged at the loading station 111 and respectively arranged on opposite sides of the conveyor belt 11 in the horizontal direction; the lifting and positioning support seats 2 are used for positioning products to temporarily support products. Specifically, the lifting and positioning support seats 2 are used to support products and are suitable for cooperating with the manipulator to position products so that each product is almost in the same position when it falls on the conveyor 1, thereby avoiding too large position deviation of the product and making the movement trajectory of the product better when it is transported on the conveyor 1 to prevent it from falling to the ground.

[0037] See also Figure 5 and Figure 6 The lifting drive mechanism 3 is arranged at the loading station 111 and is connected to the lifting and positioning support seat 2 and is used to drive the lifting and positioning support seat 2 to perform lifting movement. Its purpose is to drive the lifting and positioning support seat 2 to switch between a supporting state for supporting the product and an unloaded state for releasing the support for the product.

[0038] See also Figure 1 Two supporting rods 4 pass through the loading station 111 and the unloading station 112, and are respectively arranged on opposite sides of the conveyor belt 11 in the horizontal direction. The supporting rods 4 are used to support the products; the horizontal height of the top surface of the supporting rods 4 is greater than the horizontal height of the end surface of the conveyor belt 11. In this way, when the product descends, it can only be supported by the supporting rods 4, and will not be supported by the conveyor belt 11.

[0039] Among them, when the lifting and positioning support seat 2 is in a high horizontal position, the lifting and positioning support seat 2 can support the product and make the product suspended directly above the supporting rod 4. When the lifting and positioning support seat 2 is in a low horizontal position, the supporting rod 4 can support the product and make the product suspended directly above or obliquely above the lifting and positioning support seat 2, so that the conveying block 12 can transmit the product when it follows the conveyor belt 11. It should be explained that when the lifting and positioning support seat 2 is in a high horizontal position, the lifting and positioning support seat 2 has the largest horizontal height among the lifting and positioning support seat 2, the supporting rod 4 and the conveyor belt 11. When the lifting and positioning support seat 2 is in a low horizontal position, the lifting and positioning support seat 2 has the largest horizontal height among the lifting and positioning support seat 2, the supporting rod 4 and the conveyor belt 11. Therefore, the product is either supported by the lifting and positioning support seat 2 or supported by the supporting rod 4, and the conveyor belt 11 will not directly support the product, but the conveyor belt 11 realizes the transportation of the product through the conveying block 12, and uses the supporting rod 4 as a carrier of the product. In this way, when the manipulator enters the final assembly process, the lifting and positioning support seat 2 is first driven to rise to a high level position through the lifting drive mechanism 3. At this time, the manipulator needs to stack the various components on the lifting and positioning support seat 2, which may also be accompanied by a certain downward extrusion force. Therefore, this part of the extrusion force is borne by the lifting and positioning support seat 2 instead of the supporting rod 4. When the stacking process is completed, it is equivalent to the conveyor 1 completing the loading process, and the conveyor 1 is ready to deliver the product to the unloading station 112. At this time, the lifting and positioning support seat 2 is first driven to descend to a low level position through the lifting drive mechanism 3 until the product is supported by the supporting rod 4, and then the conveyor belt 11 is operated to link the conveying block 12, and the conveying block 12 pushes the product so that the product slides from the loading station 111 to the unloading station 112 on the supporting rod 4, and then the worker removes the product.

[0040] Obviously, by setting a loading station 111 on the conveyor 1, that is, setting a lifting and positioning support seat 2 on the conveyor 1, the product can be positioned and supported by the lifting and positioning support seat 2, so as to facilitate the robot to send the product to the conveyor 1; and then the product is sent from the loading station 111 to the unloading station 112 through the conveying block 12 of the conveyor belt 11, so as to ensure that the workers can remove the product from the conveyor 1 from the risk-free position to avoid production safety accidents. Moreover, when the lifting and positioning support seat 2 is in a high level position, the product is positioned and supported, thereby replacing the supporting rod 4 to bear the force to protect the supporting rod 4; and when the lifting and positioning support seat 2 is in a low level position, the product is supported by the supporting rod 4; in this way, the product only bears the lateral pushing force of the conveyor belt 11, but not the supporting force of the conveyor belt 11, so the conveyor belt 11 can be better protected and maintained, so that the process of the conveyor belt 11 being sent from the loading station 111 to the unloading station 112 maintains stability and low wear for a longer time.

[0041] Because some products require the robot to apply a certain squeezing force in the direction of gravity to position the product on the lifting and positioning support seat 2, the product may be stuck on the lifting and positioning support seat 2, making it difficult to separate the lifting and positioning support seat 2 from the product when it descends. In order to avoid the strong mutual squeezing force between the product and the supporting rod 4, preferably, see Figure 1-Figure 3 The conveyor 1 is provided with a plurality of push cylinders 5, which are respectively arranged on opposite sides of the conveyor belt 11 in the horizontal direction. The push cylinders 5 can push upwards so that the products supported by the lifting and positioning support seat 2 can be loosened from the lifting and positioning support seat 2. Specifically, Figure 1 In the embodiment, four push cylinders 5 are provided, and the four push cylinders 5 are arranged on the conveyor 1 in a rectangular frame structure.

[0042] Preferably, see Figure 5 and Figure 6The conveyor 1 is provided with two horizontal plates 13 located below the conveyor belt 11, and the two horizontal plates 13 are arranged at intervals. The bottom of the horizontal plate 13 is connected with a screw rod 14 extending in the direction of gravity. The double-station conveyor for auxiliary unloading also includes a power bearing plate 15, which is provided with a through hole, and the screw rod 14 passes through the through hole downward and is threadedly connected with a nut (not shown in the figure), and the power bearing plate 15 is supported by the nut; thus, the horizontal height of the nut can be adjusted to adjust the horizontal height of the power bearing plate 15. The lifting drive mechanism 3 includes a lifting cylinder 31 fixed to the power bearing plate 15, a lifting horizontal cross bar 32 connected to the output rod of the lifting cylinder 31, two lifting horizontal vertical rods 33 fixedly connected to the lifting horizontal cross bar 32 and extending in the conveying direction of the conveyor belt 11, two lifting linkage rods 34 fixedly connected to the lifting horizontal vertical rod 33 and extending in the height direction, and a linkage load-bearing plate 35 fixedly connected to the top of the lifting linkage rod 34. There are two linkage bearing plates 35, which are respectively arranged on opposite sides of the conveyor belt 11 in the horizontal direction. The push cylinder 5 and the lifting and positioning support seat 2 are supported and linked by the linkage bearing plates 35. Obviously, such a setting realizes the synchronous lifting and lowering movement of two linkage bearing plates 35 driven by one lifting cylinder 31 with a relatively lightweight structure, thereby driving the synchronous lifting and lowering movement of all the push cylinders 5 and the lifting and positioning support seats 2 located on opposite sides of the conveyor belt 11 through the linkage bearing plates 35. In addition, there are two major highlights: first, the relative height between the push cylinder 5 and the lifting and positioning support seat 2 remains unchanged, so as to ensure that when the push cylinder 5 is in action, the product can always be ejected from the lifting and positioning support seat 2, and even if the equipment has a precision error after long-term use, the operation accuracy and position accuracy of the push cylinder 5 can still be maintained. Secondly, the height of the lifting cylinder 31 is controlled by the height of the linkage bearing plate 35, that is, the height of the lifting cylinder 31 can be changed by adjusting the nut, so as to finally adjust the height of the lifting and positioning support seat 2, and at the same time, the relative height between the lifting and positioning support seat 2 and the supporting rod 4 is adjusted, so that the conveyor 1 is suitable for carrying and transporting products of different specifications, that is, the dual-station conveyor for auxiliary unloading is universal. It should be supplemented that, as other replacement structures of the lifting drive mechanism 3, the lifting drive mechanism 3 can be a mature product such as an electric push rod, a hydraulic cylinder, etc.

[0043] See also Figure 6 In order to improve the driving stability of the lifting cylinder 31 , preferably, the horizontal plate 13 is provided with a guide through hole 131 , and the lifting linkage rod 34 is movably inserted into the guide through hole 131 .

[0044] In order to prevent the product from deviating and falling during transportation on the conveyor 1, see Figure 1Preferably, the double-station conveyor for auxiliary unloading also includes two guide limit plates 16 arranged on the conveyor 1, and the two guide limit plates 16 are respectively arranged on the opposite sides of the horizontal direction of the conveyor belt 11; the lifting and positioning support seat 2 and the supporting rod 4 are both arranged between the two guide limit plates 16.

[0045] In order to prevent the product from being scratched, preferably, the inner side wall of the guide limit plate 16 facing the product is made of plastic material or leather or wood material. Figure 4 The guide limit plate 16 includes a first metal strip 161 and a first plastic strip 162. The first plastic strip 162 is provided with a first insertion groove 1621 extending along its length direction. The first metal strip 161 is inserted into the first insertion groove 1621 along the length direction of the first plastic strip 162. In this way, when the first metal strip 161 and the first plastic strip 162 have a slight relative slip phenomenon, the exposed portion of the first metal strip 161 toward the side wall of the product is small, which will not cause a significant impact, and the matching relationship between the first metal strip 161 and the first plastic strip 162 is always maintained.

[0046] It is particularly important that, based on the sliding of the product on the support rod 4, in order to prevent the product from being scratched, the top of the support rod 4 is made of plastic material or leather or wood material. Figure 3 More preferably, the supporting rod 4 includes a second metal strip 41 and a second plastic strip 42. The second plastic strip 42 is provided with a second plug-in slot extending along its length direction. The second metal strip 41 is inserted into the second plug-in slot along the length direction of the second plastic strip 42. Similarly, when the second metal strip 41 and the second plastic strip 42 have a slight relative slip phenomenon, the exposed portion of the top wall of the second metal strip 41 is small and will not cause a major impact. The matching relationship between the second metal strip 41 and the second plastic strip 42 is also always maintained. At this point, it is necessary to review the previous text. Based on the fact that the top of the supporting rod 4 is made of plastic material, it is not suitable to withstand excessive extrusion pressure to avoid pits on the supporting rod 4 that affect the stability of the product during transportation. Therefore, it is necessary to lift and position the support seat 2 instead of the supporting rod 4 to withstand the extrusion force of the robot.

[0047] Preferably, see Figure 1 A plurality of lifting and positioning support seats 2 are enclosed to form a rectangular frame structure, and the lifting and positioning support seat 2 is provided with a positioning groove 21, the outer wall of the positioning groove 21 is a first limiting wall, and the inner wall of the positioning groove 21 is a second limiting arm, so that the track of the positioning groove 21 is an L-shaped structure. In this way, the product is positioned and limited by all the first limiting arms and all the second limiting arms, so that the product is not easy to slip when it is sent to the loading station 111 by the robot.

[0048] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. Auxiliary unloading double-station conveyor, characterized in that: include: A conveyor (1) comprises a conveyor belt (11), wherein the conveyor belt (11) comprises a loading station (111) and a unloading station (112) arranged in sequence along the conveying direction of the conveyor belt (11), wherein a plurality of conveying blocks (12) are protruded from the end surface of the conveyor belt (11), and the plurality of conveying blocks (12) are arranged at intervals along the extending direction of the conveyor belt (11); At least two lifting and positioning support seats (2) are arranged at the loading station (111) and are respectively arranged on two opposite sides of the conveyor belt (11) in the horizontal direction; the lifting and positioning support seats (2) are used for positioning products to temporarily support products; A lifting drive mechanism (3), which is disposed at the loading station (111) and is drivingly connected to the lifting and positioning support seat (2), and is used to drive the lifting and positioning support seat (2) to perform lifting movement; Two supporting rods (4) pass through the loading station (111) and the unloading station (112) and are respectively arranged on opposite sides of the conveyor belt (11) in the horizontal direction, and the supporting rods (4) are used to support products; the horizontal height of the top surface of the supporting rod (4) is greater than the horizontal height of the end surface of the conveyor belt (11); Wherein, when the lifting and positioning support seat (2) is in a high horizontal position, the lifting and positioning support seat (2) can support the product and make the product suspended directly above the supporting rod (4); When the lifting and positioning support seat (2) is in a low horizontal position, the supporting rod (4) can support the product and make the product suspended above the lifting and positioning support seat (2), so that the conveying block (12) can transmit the product when it follows the conveying belt (11) in linkage; The conveyor (1) is provided with a plurality of push cylinders (5), and the plurality of push cylinders (5) are respectively arranged on opposite sides of the conveyor belt (11) in the horizontal direction, and the push cylinders (5) are capable of pushing upwards so that the product supported by the lifting and positioning support seat (2) can be loosened from the lifting and positioning support seat (2); The conveyor (1) is provided with a plurality of transverse plates (13) located below the conveyor belt (11), and the plurality of transverse plates (13) are arranged at intervals; the bottom of the transverse plate (13) is connected to a screw rod (14) extending in the direction of gravity; the auxiliary unloading double-station conveyor also includes a power bearing plate (15), the power bearing plate (15) is provided with a through hole, the screw rod (14) passes downward through the through hole and is threadedly connected to a nut, and the power bearing plate (15) is supported by the nut; the lifting drive mechanism (3) includes a lifting cylinder (31) fixed to the power bearing plate (15), and a lifting cylinder (31) connected to an output rod of the lifting cylinder (31). A horizontal cross bar (32), a plurality of lifting horizontal vertical bars (33) fixedly connected to the lifting horizontal cross bar (32) and extending along the conveying direction of the conveyor belt (11), a plurality of lifting linkage rods (34) fixedly connected to the lifting horizontal vertical bars (33) and extending along the height direction, and a linkage load-bearing plate (35) fixedly connected to the top of the lifting linkage rod (34); at least two linkage load-bearing plates (35) are provided, and at least two linkage load-bearing plates (35) are respectively arranged on opposite sides of the horizontal direction of the conveyor belt (11); the push cylinder (5) and the lifting positioning support seat (2) are both supported and linked by the linkage load-bearing plates (35).

2. The double-station conveyor for auxiliary unloading as claimed in claim 1, characterized in that: The transverse plate (13) is provided with a guide through hole (131), and the lifting linkage rod (34) is movably inserted into the guide through hole (131).

3. The double-station conveyor for auxiliary unloading as claimed in claim 1, characterized in that: The double-station conveyor for auxiliary unloading also includes two guide limit plates (16) arranged on the conveyor (1), and the two guide limit plates (16) are respectively arranged on opposite sides of the conveyor belt (11) in the horizontal direction; the lifting and positioning support seat (2) and the supporting rod (4) are both arranged between the two guide limit plates (16).

4. The double-station conveyor for auxiliary unloading as claimed in claim 3 is characterized in that: The inner side wall of the guide and limiting plate (16) facing the product is made of plastic material or leather or wood material.

5. The double-station conveyor for auxiliary unloading as claimed in claim 4, characterized in that: The guide and limiting plate (16) comprises a first metal strip (161) and a first plastic strip (162); the first plastic strip (162) is provided with a first insertion groove (1621) extending along its length direction; the first metal strip (161) is inserted into the first insertion groove (1621) along the length direction of the first plastic strip (162).

6. The double-station conveyor for auxiliary unloading as claimed in claim 1, characterized in that: The top of the supporting rod (4) is made of plastic material, leather or wood material.

7. The double-station conveyor for auxiliary unloading as claimed in claim 6, characterized in that: The supporting rod (4) comprises a second metal strip (41) and a second plastic strip (42); the second plastic strip (42) is provided with a second insertion groove extending along its length direction; the second metal strip (41) is inserted into the second insertion groove along the length direction of the second plastic strip (42).

8. The double-station conveyor for auxiliary unloading as claimed in claim 1, characterized in that: A plurality of the lifting and positioning support seats (2) are enclosed to form a rectangular frame structure, and the lifting and positioning support seat (2) is provided with a positioning groove (21), the outer side wall of the positioning groove (21) is a first limiting wall, and the inner side wall of the positioning groove (21) is a second limiting arm, so that the trajectory of the positioning groove (21) is an L-shaped structure.

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