Loading and unloading device

Abstract

The application relates to a feeding and discharging device. The device comprises a first lifting module and a driving assembly; the first lifting module comprises a first chain, a limiting assembly, an abutting block and at least two supporting plates; the first chain is rotationally connected with the supporting plates and the abutting blocks corresponding to the supporting plates, and the driving assembly is used for driving the first chain to drive the supporting plates to make a closed loop movement; the supporting plate comprises a second section and a first section used for carrying materials; in a transportation area, when the supporting plate is located in a first area, the first section is supported on the abutting block; when the supporting plate moves upwards to a second area, the second section abuts against the limiting assembly, so that when the supporting plate continues to move upwards in the second area, the first section turns upwards. When the supporting plate is located in the first area, the supporting plate can move materials along the vertical direction through the driving of the driving assembly; when the supporting plate is located in the second area, the second section abuts against the limiting assembly; when the supporting plate continues to move in the second area, the first section turns upwards, so that the turning angle of the supporting plate is increased.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of automation, in particular to a feeding and discharging device. BACKGROUND

[0002] In the existing storage box of automatic production, in order to save space, a vertical multi-layer movable shelf storage box is often used to store materials. However, when a mechanical hand or an operator feeds or discharges materials from the vertical multi-layer movable shelf storage box, the feeding or discharging of the next layer is interfered by the completed feeding or discharging of the previous layer due to the small spacing between the shelves, so that the feeding or discharging of the mechanical hand or the operator is difficult. SUMMARY

[0003] Therefore, it is necessary to provide a feeding and discharging device to solve the technical problem that the feeding or discharging of the mechanical hand or the operator is difficult due to the small spacing between the shelves.

[0004] A feeding and discharging device, comprising a first lifting module and a driving assembly; the first lifting module comprises a first chain, a limiting assembly, an abutting block and at least two supporting plates; the first lifting module is drivingly connected to the driving assembly, the supporting plates are rotatably connected to the first chain, the abutting blocks corresponding to the supporting plates are connected to the first chain, and the driving assembly is used to drive the first chain to drive the supporting plates to make circular motion in a plane;

[0005] The supporting plate comprises a second section and a first section for carrying materials, and the first section and the second section are located on both sides of the rotating connection position of the supporting plate and the first chain along the length direction of the supporting plate.

[0006] In the transportation area, when the supporting plate is located in the first area, the first section is supported on the abutting block for supporting the materials, and the first area is located in the vertical section range of the first chain; when the supporting plate moves upward to the second area, the second section abuts against the limiting assembly, so that the first section is turned upward when the supporting plate continues to move upward in the second area; in the two adjacent supporting plates, when the first section of the upper supporting plate is turned upward, the lower supporting plate is in the feeding and discharging position.

[0007] In one of the embodiments, the first chain is tensioned by the first driving sprocket and the first driven sprocket which are spaced apart in the vertical direction, and the limiting assembly is located on the side of the first driven sprocket close to the transportation area in the horizontal direction perpendicular to the axial direction of the rotating shaft of the first driven sprocket.

[0008] In one of the embodiments, the second region is an arc-shaped segment of the first chain, and the pallet moving to the joint of the first region and the second region abuts against the lower end of the limiting assembly.

[0009] In one of the embodiments, the first lifting module comprises a first driving member, and the first driven sprocket and the limiting assembly are connected to the first driving member, and the first driving member is used to drive the first driven sprocket and the limiting assembly to move synchronously.

[0010] In one of the embodiments, the first lifting module further comprises a fixing block, the fixing block is connected to the first chain, and the fixing block extends in the direction of the first segment along the second segment, and the pallet is rotatably connected to the fixing block.

[0011] The abutting block extends from the fixing block towards the pallet.

[0012] In one of the embodiments, when the pallet abuts against the lower end of the limiting assembly, the distance from the limiting assembly to the rotating connection position is not less than the distance from the abutting block to the rotating connection position.

[0013] In one of the embodiments, the first lifting module further comprises a first limiting member, and in the conveying region, the pallet moving to the first region can abut against the first limiting member to limit the displacement of the pallet along the length direction of the pallet.

[0014] In one of the embodiments, the first lifting module comprises two second limiting members, and in the conveying region, the two sides of the pallet moving to the first region can abut against the corresponding second limiting members respectively to limit the displacement of the pallet along the width direction of the pallet.

[0015] In one of the embodiments, the feeding and discharging device comprises a second lifting module, the second lifting module and the first lifting module are arranged in a horizontal first direction, and the second lifting module is drivingly connected to the driving assembly; the second lifting module rotatably connects a pallet, and the pallet on the first lifting module and the pallet on the second lifting module corresponding in height are used to support the two ends of the material, and the driving assembly is used to drive the pallet in the second lifting module to make a closed loop movement in a vertical plane, and the movement direction of the pallet on the first lifting module is opposite to that of the pallet on the second lifting module.

[0016] In one of the embodiments, the feeding and discharging device further comprises an adjusting assembly, the adjusting assembly comprises a second driving member, an adjusting rod, a first adjusting seat and a second adjusting seat, the adjusting rod is drivingly connected to the second driving member, the first adjusting seat and the second adjusting seat are respectively threadedly connected to two ends of the adjusting rod and have opposite rotation directions, and the first adjusting seat and the second adjusting seat are respectively connected to the first lifting module and the second lifting module; the second driving member is used to drive the adjusting rod to rotate, so that the first adjusting seat and the second adjusting seat are relatively far away from and close to each other.

[0017] Advantages:

[0018] The feeding and discharging device provided by the embodiment of the application comprises a first lifting module and a driving assembly. The first lifting module comprises a first chain, a limiting assembly, an abutting block and at least two supporting plates. The first lifting module is drivingly connected to the driving assembly. The supporting plates are rotationally connected to the first chain. The abutting blocks corresponding to the supporting plates are connected to the first chain. The driving assembly is used to drive the first chain to drive the supporting plates to make circular motion in a plane. The supporting plate comprises a first section for carrying materials and a second section. Along the length direction of the supporting plate, the first section and the second section are respectively located on the two sides of the position where the supporting plate is rotationally connected to the first chain. In the transportation area, when the supporting plate is located in a first area, the first section is supported on the abutting block and is used to support the materials. The first area is located in the range of the vertical section of the first chain. When the supporting plate moves upward to a second area, the second section is abutted against the limiting assembly and is used to make the supporting plate continue to move upward. The first section is turned upward. In the two adjacent supporting plates, when the first section of the upper supporting plate is turned upward, the lower supporting plate is located in the feeding and discharging position. In the transportation area, when the supporting plate is located in the first area, the first section is abutted against the abutting block, so that the supporting plate on the first lifting module can support the materials. The driving assembly is driven to make the supporting plate move with the materials. When the supporting plate is located in the second area, the second section is abutted against the limiting assembly. When the supporting plate continues to move in the second area, the first section is turned upward, so that the first section is turned upward relative to the abutting block, thereby increasing the included angle between the two adjacent supporting plates. In the two adjacent supporting plates, the gap between the upper supporting plate located in the second area and the lower supporting plate located in the feeding and discharging position is increased. In the case that the distance between the two adjacent supporting plates is not changed, the manipulator or the operator can conveniently feed and discharge the materials on the lower supporting plate located in the feeding and discharging position. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 The first schematic view of the feeding and discharging device provided by the application;

[0020] Figure 2 The first schematic view of the feeding and discharging device provided by the application;

[0021] Figure 3Part second schematic view of the feeding and discharging device provided by the present application;

[0022] Figure 4 Schematic view of the first lifting module in the feeding and discharging device provided by the present application;

[0023] Figure 5 For Figure 4 Enlarged view of C in the middle;

[0024] Figure 6 Schematic view of the cooperation of the supporting plate, the abutting block and the limiting assembly in the feeding and discharging device provided by the present application;

[0025] Figure 7 Schematic view of the limiting assembly in the feeding and discharging device provided by the present application;

[0026] Figure 8 Schematic view of the driving assembly in the feeding and discharging device provided by the present application;

[0027] Figure 9 For Figure 3 Enlarged view of A in the middle;

[0028] Figure 10 Schematic view of the adjusting assembly in the feeding and discharging device provided by the present application;

[0029] Figure 11 For Figure 3 Enlarged view of B in the middle.

[0030] Reference signs:

[0031] 100 - first lifting module; 110 - first supporting plate; 111 - first section; 112 - second section; 120 - platform plate; 130 - first chain; 131 - first driving sprocket; 132 - first driven sprocket; 133 - rotating shaft; 140 - second chain; 141 - second driving sprocket; 142 - second driven sprocket; 160 - fixed block; 180 - abutting block; 181 - first abutting surface; 182 - second abutting surface; 183 - third abutting surface; 190 - rotating connection position; 200 - second lifting module; 210 - second supporting plate; 300 - driving assembly; 310 - third driving member; 311 - fifth bevel gear; 312 - sixth bevel gear; 320 - transmission shaft; 330 - first bevel gear; 340 - second bevel gear; 350 - third bevel gear; 360 - fourth bevel gear; 390 - transmission rod; 420 - first limiting member; 421 - first limiting seat; 422 - first limiting wheel; 430 - second limiting member; 431 - second limiting seat; 432 - second limiting wheel; 440 - first supporting frame; 450 - second supporting frame; 500 - adjusting assembly; 510 - adjusting hand wheel; 520 - adjusting rod; 530 - first adjusting seat; 540 - second adjusting seat; 550 - first adjusting bevel gear; 560 - second adjusting bevel gear; 610 - mechanical hand; 620 - roller; 630 - rack; 640 - machine shell; 650 - screw rod assembly; 700 - limiting assembly; 710 - clamping wheel; 720 - connecting arm. DETAILED DESCRIPTION

[0032] In order to make the above objectives, features and advantages of the present application more apparent, specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. It will be apparent, however, to one skilled in the art that the present application can be practiced without some or all of these specific details, and that the present application is not limited to the specific embodiments disclosed below.

[0033] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0034] In addition, the terms "first", "second", "third", etc. are used herein for descriptive purposes only and should not be construed as indicating or implying relative importance or an ordered sequence. Thus, features referring to "first", "second" or "third" can include, explicitly or implicitly, at least one of such features. In the description of the application, the term "a plurality" means at least two, for example two, three or the like, unless expressly and specifically defined otherwise.

[0035] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0036] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0037] It should be noted that when an element is referred to as "fixed to" or "provided on" another element, it can be directly on the other element or there can be a middle element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there can be a middle element. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are for illustrative purposes only and are not the only embodiment.

[0038] Referring to Figures 1-6 , Figure 1 The first schematic view of the feeding and discharging device provided by the present application; Figure 2 The first schematic view of the feeding and discharging device provided by the present application; Figure 3 The second schematic view of the feeding and discharging device provided by the present application; Figure 4 The schematic view of the first lifting module in the feeding and discharging device provided by the present application;

[0039] Figure 5 The Figure 4An enlarged view at C; Figure 6 A schematic view of cooperation between a supporting plate and an abutting block and a limiting assembly in the feeding and discharging device provided by the present application.

[0040] The feeding and discharging device provided by the embodiment of the present application comprises a first lifting module 100 and a driving assembly 300. The first lifting module 100 comprises a first chain 130, a limiting assembly 700, an abutting block 180 and at least two supporting plates. The first lifting module 100 is drivingly connected to the driving assembly 300. The supporting plates are rotatably connected to the first chain 130. The abutting blocks 180 corresponding to the supporting plates are connected to the first chain 130. The driving assembly 300 is used to drive the first chain 130 to drive the supporting plates to make circular motion in a plane. The supporting plate comprises a first section 111 for carrying materials and a second section 112. Along the length direction of the supporting plate, the first section 111 and the second section 112 are respectively located on the two sides of a rotating connection position 190 between the supporting plate and the first chain 130. In the transportation area, when the supporting plate is located in a first area, the first section 111 is supported on the abutting block 180 for supporting the materials. The first area is located in the vertical section range of the first chain 130. When the supporting plate moves upward to a second area, the second section 112 abuts against the limiting assembly 700, so that the first section 111 is turned upward when the supporting plate continues to move upward in the second area. In the two adjacent supporting plates, when the first section 111 of the upper supporting plate is turned upward, the lower supporting plate is in the feeding and discharging position.

[0041] It should be noted that the above description of the first section and the second section is mainly used for facilitating the description of the relationship with the connecting mechanism. Actually, the first section 111 and the second section 112 can be an integrated structure or independent structures, which are not limited herein.

[0042] When the first chain 130 makes circular motion in the plane, the moving directions of the supporting plates located on the two sides of the first chain 130 are opposite. In the feeding and discharging process, only one side of the first chain 130 is used for transporting the materials. Therefore, one side of the first chain 130 is defined as the transportation area, and the back side of the first chain 130 is the non-transportation area. Referring to FIG. 1, the mark M is the transportation area on one side of the first lifting module 100. Figure 3 It should be noted that the feeding and discharging position refers to the position for clamping and placing the materials in the transportation area. The first chain 130 rotates clockwise (from the perspective) to transport the materials. Figure 4

[0043] It should be noted that in the actual application scenario, the materials described in the present application can include but are not limited to, for example, circuit boards and the like. Exemplarily, the feeding and discharging device of the embodiment of the present application can be used for feeding and discharging the circuit boards. In order to avoid redundancy, the materials are mainly described in the following embodiments.

[0044] ​Specifically, the plurality of pallets on the first lifting module 100 are arranged at equal intervals along the first chain 130. In the transportation area, the first section 111 and the second section 112 are respectively located on the two sides of the rotating connection position 190. When the pallet is located in the first area, the first section 111 abuts against the abutting block 180, so that the pallet on the first lifting module 100 can support the material. The first chain 130 is driven by the driving assembly 300 to make a circular motion in the plane, and the pallet moves synchronously with the first chain 130, so that the material can be moved. When the pallet is located in the second area, the second section 112 abuts against the limiting assembly 700. When the pallet continues to move in the second area, the first section 111 is flipped upward under the driving of the first chain 130, so that the first section 111 is tilted upward and rotated relative to the abutting block 180, thereby increasing the included angle between adjacent pallets, and further increasing the gap between the upper pallet located in the second area and the lower pallet located in the loading and unloading position. That is, the operator or the mechanical hand 610 can conveniently load and unload the material on the lower pallet located in the loading and unloading position without changing the distance between adjacent pallets.

[0045] Further, the weight of the first section 111 is greater than that of the second section 112. In the transportation area, when the pallet is located in the first area, the self-gravity of the idle first section 111 is greater than that of the second section 112, so that the lower end of the first section 111 can always abut against the abutting block 180 without being tilted upward relative to the rotating connection position 190, thereby facilitating the placement of the material on the pallet located in the loading and unloading position. It should be noted that the driving assembly 300 drives the first chain 130 to drive the pallet to move in the vertical plane, thereby shortening the transportation distance and improving the efficiency of the loading and unloading device.

[0046] Further, the first section 111 includes a connecting section and a support plate mounted on the connecting section. The connecting section is close to the rotating connection position 190, and the support plate is away from the rotating connection position 190. The support plate is used to carry the material. The area of the support plate in the horizontal plane is greater than that of the connecting section, thereby increasing the contact area between the support plate and the material, so that the material can be stably supported on the support plate.

[0047] Referring to Figure 4 and Figure 5 In one embodiment, the first chain 130 is tensioned by the first driving sprocket 131 and the first driven sprocket 132 arranged at intervals in the vertical direction. In the horizontal direction perpendicular to the axis 133 of the first driven sprocket 132, the limiting assembly 700 is located on the side of the first driven sprocket 132 close to the transportation area.

[0048] Specifically, when the supporting plate moves upward to the second section 112 abutting against the limiting assembly 700 on the side of the transport area, the supporting plate is perpendicular to the horizontal plane, i.e., the rotation angle of the supporting plate is 90 degrees. In the horizontal direction perpendicular to the shaft direction of the rotation shaft 133 of the first driven sprocket 132, since the limiting assembly 700 is located on the side of the first driven sprocket 132 close to the transport area, the first chain 130 continues to drive the supporting plate to rotate upward, and the limiting assembly 700 continuously abuts against the second section 112, so that the supporting plate on the side of the limiting assembly 700 away from the transport area continues to turn upward, thereby realizing a turning angle greater than 90 degrees. In this way, the included angle between the adjacent two supporting plates can be larger, thereby avoiding interference with the mechanical hand 610 or the operator extending downward in the vertical direction into the feeding and discharging position, so that the mechanical hand 610 or the operator can conveniently feed and discharge the supporting plate in the feeding and discharging position. For the convenience of description, XX' in the specification is defined as a horizontal first direction, YY' is a horizontal second direction, and ZZ' is a vertical direction, and the following is described in the horizontal first direction and the horizontal second direction. Among them, the horizontal direction perpendicular to the shaft direction of the rotation shaft 133 of the first driven sprocket 132 coincides with the first direction, the shaft direction of the rotation shaft 133 of the first driven sprocket 132 coincides with the second direction, and the transport area is located on the side of the first chain 130 along the first direction. Figure 1

[0049] Further, the lower end of the second section 112 is chamfered, so that when the upward turning angle of the upper supporting plate is greater than 90 degrees, the lower end of the second section 112 is more easily avoided from the next layer of materials, thereby avoiding scratching the next layer of materials when rotating.

[0050] Referring to Figure 7 In one embodiment, the limiting assembly 700 includes a clamping wheel 710 and a connecting arm 720, and the clamping wheel 710 is connected to the connecting arm 720 on the side close to the transport area. The end of the connecting arm 720 away from the clamping wheel 710 is connected to the rotation shaft 133 of the first driven sprocket 132, so that the clamping wheel 710 and the first driven sprocket 132 keep fixed positions.

[0051] Specifically, by adjusting the length of the connecting arm 720, the turning angle of the supporting plate in the second area can be changed. That is, the longer the connecting arm 720 is, the greater the distance between the clamping wheel 710 and the first driven sprocket 132 in the first direction is, so that the upward turning angle of the upper supporting plate is greater without changing the distance between the adjacent supporting plates, the gap between the upper supporting plate in the second area and the lower supporting plate in the feeding and discharging position is greater, and feeding and discharging is more convenient.

[0052] ​Further, the card wheel 710 is rotationally connected to the connecting arm 720, when the second section 112 abuts against the card wheel 710, the first chain 130 drives the tray to rotate around the abutting position of the second section 112 and the card wheel 710, the card wheel 710 can rotate relative to the second section 112, thereby reducing the friction, and making the tray turn over more smoothly.

[0053] Referring to Figure 4 and Figure 5 In one embodiment, the second region is the arc-shaped section of the first chain 130, the tray moving to the connecting position of the first region and the second region abuts against the lower end of the limiting assembly 700.

[0054] Specifically, in the transportation region, when the tray is moved upward from the first region to the second region, the first chain 130 drives the abutting block 180 and the tray to deflect upward. Since the second section 112 abuts against the card wheel 710, when the tray continues to move upward in the second region, the first section 111 continues to rise upward under the drive of the first chain 130 with the abutting position of the second section 112 and the card wheel 710 as the fulcrum, and separates from the abutting block 180, so that the angle of the tray turning over upward is greater than the angle of the abutting block 180 tilting upward, i.e. the tray is further turned over under the joint action of the first chain 130 and the card wheel 710, so that the turning angle of the tray is greater, thereby increasing the gap between the first section 111 of the upper tray located in the second region and the first section 111 of the lower tray located in the loading and unloading position in the adjacent tray, and further facilitating the robot 610 or the operator to reach into the gap to load and unload, i.e. without changing the distance between the adjacent trays, the convenience of loading and unloading is improved.

[0055] In the transportation region, since the tray moving to the connecting position of the first region and the second region abuts against the lower end of the limiting assembly 700, the card wheel 710 is at the same height as the first driven sprocket 132. When the first chain 130 drives the tray to turn over upward, the limiting assembly 700 simultaneously abuts against the second section 112, so that the first section 111 turns over upward at the same time, thereby synchronizing the action of the first chain 130 and the card wheel 710, and further improving the turning efficiency of the tray.

[0056] Further, the loading and unloading position is the joint of the first region and the second region. In the transportation region, when the pallet is at the highest position in the horizontal position at the joint of the first region and the second region, in the adjacent pallets, the upper pallet can have a larger movement stroke, so that the pallet can be turned up to a larger extent, that is, the gap between the first section 111 of the upper pallet in the second region and the first section 111 of the lower pallet at the loading and unloading position is larger. At the same time, since the pallet at the joint of the first region and the second region is at the highest position in the horizontal position, the movement stroke of the manipulator 610 or the operator for loading and unloading can be reduced to the maximum, and the loading and unloading efficiency is improved.

[0057] It should be noted that, in the adjacent pallets, when the lower pallet is at the joint of the first region and the second region, in the first direction, the upper pallet is located on the side away from the transportation region of the clamping wheel 710 (closer to the back side), so as to ensure that the included angle between the upper pallet and the lower pallet is greater than 90 degrees.

[0058] In other embodiments, the second region is located in the range of the arcuate section and a part of the straight section of the first chain 130, as long as the first section 111 can be turned up relative to the abutting block 180, so that in the adjacent pallets, the gap between the first section 111 of the upper pallet in the second region and the first section 111 of the lower pallet at the loading and unloading position is increased.

[0059] Referring to Figure 4 , Figure 5 and Figure 7 , Figure 7 a schematic view of the limiting assembly in the loading and unloading device provided by the application. In one of the embodiments, the first lifting module 100 includes a first driving member, the first driven sprocket 132 and the limiting assembly 700 are connected to the first driving member, and the first driving member is used to drive the first driven sprocket 132 and the limiting assembly 700 to move synchronously.

[0060] Specifically, the first driving member is used to drive the first driven sprocket 132 to move in the vertical direction, so that the first driven sprocket 132 approaches and moves away from the first driving sprocket 131, thereby adjusting the tension of the first chain 130, so that the first chain 130 does not shake during movement in the vertical direction, and the stability of the material during transportation is improved. Since the limiting assembly 700 is also connected to the first driving member, the limiting assembly 700 moves synchronously under the driving of the first driving member, so that the clamping wheel 710 always maintains the same height as the first driven sprocket 132, thereby ensuring that the pallet moving to the joint of the first region and the second region always abuts against the lower end of the clamping wheel 710.

[0061] In other embodiments, the first driven sprocket 132 and the limiting assembly 700 can also be arranged respectively, as long as the card wheel 710 is at the same height as the first driven sprocket 132.

[0062] In addition, the first lifting module 100 further comprises a screw rod assembly 650 connected to the rotating shaft 133 of the first driven sprocket 132, and the screw rod assembly 650 drives the first driven sprocket 132 to move away from and close to the first driving sprocket 131 in the vertical direction through the first driving member. Wherein the first driving member can be manually adjusted, so as to more conveniently adjust the tension degree of the first chain 130.

[0063] Referring to Figure 4 , Figure 5 and Figure 6 , in one of the embodiments, the first lifting module 100 comprises a fixed block 160 connected to the first chain 130, and the fixed block 160 extends in the direction of the second section 112 pointing to the first section 111, and the supporting plate is rotationally connected to the fixed block 160; the abutting block 180 extends from the fixed block 160 towards the supporting plate.

[0064] Specifically, the fixed block 160 extends in the direction of the second section 112 pointing to the first section 111, and the supporting plate is rotationally connected to the fixed block 160, so that the rotation connection position 190 is away from the abutting place of the second section 112 and the card wheel 710. It can be known by the principle of lever that this makes it more labor-saving when the first chain 130 drives the supporting plate to rotate, and facilitates the lifting of the supporting plate.

[0065] Referring to Figure 4 , Figure 5 and Figure 6 , in one of the embodiments, when the supporting plate abuts against the lower end of the limiting assembly 700, the distance from the limiting assembly 700 to the rotation connection position 190 is not less than the distance from the abutting block 180 to the rotation connection position 190.

[0066] Specifically, when the rotation angle of the supporting plate located in the second area is greater than 90 degrees, the second section 112 will be lifted upward due to gravity. Since the distance from the limiting assembly 700 to the rotation connection position 190 is not less than the distance from the abutting block 180 to the rotation connection position 190, the second section 112 can abut against the abutting block 180, thereby avoiding the second section 112 from being separated from the card wheel 710 and causing scratching to the lower layer of materials. At the same time, since the lower end of the abutting block 180 can abut against the second section 112, when the supporting plate moves to the side away from the transportation area, the second section 112 always abuts against the lower side of the abutting block 180, thereby avoiding the first section 111 from rotating relative to the fixed block 160 under the action of gravity and causing the supporting plates to be stacked together, so as to reduce the mutual scratching between the supporting plates of adjacent layers and improve the service life of the supporting plates.

[0067] Referring to Figure 5 and Figure 6 In one embodiment, the pallet in the first area is in a horizontal state in the transportation area.

[0068] Specifically, in the transportation area, the pallet in the first area is kept in a horizontal state, so that the material can be stably placed and stably clamped. Since the pallet in the first area is kept in a horizontal state, the abutting block 180 is not in the same horizontal line as the rotating connection position 190, and when the pallet moves to the first area in the non-transportation area, the pallet is inclined downward in the horizontal direction away from the transportation area, so as to reduce the projection of the pallet in the first direction, and further reduce the volume of the feeding and discharging device.

[0069] Referring to Figure 4 , Figure 5 and Figure 6 In one embodiment, the abutting block 180 includes a first abutting surface 181, a second abutting surface 182, and a third abutting surface 183, the first abutting surface 181 and the third abutting surface 183 are opposite surfaces, and the second abutting surface 182 is located between the first abutting surface 181 and the third abutting surface 183; in the transportation area, when the pallet is in the first area, the first section 111 abuts against the first abutting surface 181; in the non-transportation area (i.e., located on the back side of the transportation area), when the pallet is in the first area (i.e., the vertical section), the second section 112 abuts against the third abutting surface 183.

[0070] Specifically, in the feeding process, in the transportation area, the pallet in the first area on the first chain 130 moves upward in the vertical direction, at this time, the lower end of the first section 111 of the pallet abuts against the first abutting surface 181, and the pallet is kept in a horizontal state; when the pallet moves from the connection between the first area and the second area to the side of the second section 112 abutting against the limiting assembly 700 towards the transportation area, the first section 111 is separated from the first abutting surface 181; when the pallet continues to move to the second section 112 and the card wheel 710 is separated, the second section 112 abuts against the connection between the first abutting surface 181 and the second abutting surface 182; when the pallet continues to move in the second area, the second section 112 moves from abutting against the first abutting surface 181 to the connection between the second abutting surface 182 and the third abutting surface 183; when the pallet moves from the second area to the first area (i.e., the vertical section) in the non-transportation area (i.e., the part located on the back side in the chain), the second section 112 abuts against the third abutting surface 183. In the above process, the pallet rotates clockwise by approximately 180 degrees around the rotating connection position 190 during the movement of the pallet from the transportation area to the non-transportation area.

[0071] In the unloading process, when the pallet is located in the first area of the non-transporting area, the second section 112 of the pallet always abuts against the third abutting surface 183 due to the gravity of the first section 111; when the pallet moves from the first area of the non-transporting area to the directly above of the clamping wheel 710, the second section 112 of the pallet always abuts against the abutting block 180 and rotates from the abutting position of the third abutting surface 183 to the joint of the second abutting surface 182 and the third abutting surface 183 due to the gravity of the first section 111; when the pallet moves to the position where the second section 112 abuts against the clamping wheel 710 near the side of the transporting area, the fixed block 160 drives the first section 111 to rotate around the abutting position of the second section 112 and the clamping wheel 710, so that the pallet rotates from the joint of the second abutting surface 182 and the third abutting surface 183 to the joint of the first abutting surface 181 and the second abutting surface 182; when the pallet moves from the second area to the joint of the first area and the second area, the first section 111 of the pallet abuts against the first abutting surface 181 again and keeps horizontal, so as to facilitate the placement of the materials. In the above process, the pallet rotates approximately 180 degrees counterclockwise around the rotating connection position 190 during the movement of the pallet from the non-transporting area to the transporting area.

[0072] In the above process, due to the arrangement of the clamping wheel 710, if the first chain 130 reverses, i.e., the pallet rotates counterclockwise (in the perspective view), when the pallet moves from the side of the second area away from the transporting area to the position where the second section 112 abuts against the clamping wheel 710 near the side of the transporting area, the fixed block 160 drives the first section 111 to rotate around the abutting position of the second section 112 and the clamping wheel 710, so that the pallet does not directly and quickly fall down and collide with the abutting block 180 to cause damage to the parts. Figure 4 In the perspective view, during the unloading process, in the transporting area, due to the gravity of the first section 111 being greater than the gravity of the second section 112, the overturning angle of the pallet located in the second area is always greater than 90 degrees, so as to facilitate the convenient placement of the materials.

[0073] In the perspective view, during the unloading process, in the transporting area, due to the gravity of the first section 111 being greater than the gravity of the second section 112, the overturning angle of the pallet located in the second area is always greater than 90 degrees, so as to facilitate the convenient placement of the materials. Figure 4 Figure 5 In one of the embodiments, the first lifting module 100 further comprises a first limiting piece 420, in the transporting area, the pallet moving to the first area can abut against the first limiting piece 420 to limit the displacement of the pallet along the length direction of the pallet.

[0074] Specifically, in the transporting area, when the pallet moves to the first area, the pallet can abut against the first limiting piece 420, so as to limit the displacement of the pallet along one side of the first direction, so that the pallet keeps stable to a certain extent, and then facilitates the stable transportation of the materials.

[0075] ​Further, the first limiting member 420 is arranged at one side of the connection between the first region and the second region. Since the feeding and discharging position is located at the connection between the first region and the second region, when the tray moves to the feeding and discharging position, the tray can be limited, thereby reducing the shaking of the tray to a certain extent, facilitating the clamping and placing of the materials on the tray. Since the first limiting member 420 is arranged at one side of the tray moving to the first feeding and discharging position, the frictional force of the relative movement of the tray with the first limiting member 420 during the movement of the tray can be reduced, and the smoothness of the movement of the tray with the materials can be improved.

[0076] Referring to Figure 4 and Figure 5 In one of the embodiments, the first limiting member 420 includes a first limiting wheel 422 and a first limiting seat 421, the first limiting wheel 422 is rotationally connected to the first limiting seat 421, and the tray moving to the feeding and discharging position can abut against the first limiting wheel 422.

[0077] Specifically, when the tray moves in the vertical direction, the first limiting wheel 422 can rotate relative to the tray in the second direction, thereby reducing the frictional force and enabling the tray to move stably.

[0078] Referring to Figure 4 and Figure 5 In one of the embodiments, the first lifting module 100 further includes a second chain 140 and a platform plate 120, the second chain 140 is arranged in the second direction and spaced apart from the first chain 130, the second chain 140 is provided with a fixed block 160, an abutting block 180 and a tray corresponding in height to the first chain 130, and the two ends of the platform plate 120 are respectively connected to the tray on the first chain 130 and the tray on the second chain 140.

[0079] Specifically, by connecting the two ends of the platform plate 120 to the tray on the first chain 130 and the tray on the second chain 140 respectively, the platform plate 120 can stably support the tray and reduce the shaking of the tray. Further, the first limiting member 420 is arranged between the first chain 130 and the second chain 140, when the tray moves to the feeding and discharging position, the end of the platform plate 120 away from the conveying region abuts against the first limiting wheel 422, thereby reducing the shaking of the tray.

[0080] Referring to Figure 4 and Figure 5 In one of the embodiments, the first lifting module 100 includes two second limiting members 430, in the conveying region, the two sides of the tray moving to the first region can respectively abut against the corresponding second limiting members 430 to limit the displacement of the tray in the width direction of the tray.

[0081] Specifically, the two second limit members 430 are arranged on both sides of the platform plate 120 along the second direction. When the platform plate 120 moves to the first area in the conveying area, the platform plate 120 can abut against the second limit members 430, so as to limit the displacement of the platform plate 120 in the second direction, so that the pallet is kept stable to a certain extent, thereby facilitating the stable conveying of the materials.

[0082] Further, the second limit member 430 is arranged on one side of the connection between the first area and the second area. Since the loading and unloading position is located at the connection between the first area and the second area, when the platform plate 120 moves to the loading and unloading position, the two sides of the platform plate 120 along the second direction can be limited, so as to reduce the shaking of the pallet to a certain extent, thereby facilitating the clamping and placing of the materials on the pallet. Since the second limit member 430 is arranged only on the two sides of the pallet moving to the first loading and unloading position, the frictional force between the platform plate 120 and the second limit member 430 during movement is reduced, and the smoothness of the movement of the pallet with the materials is improved.

[0083] Continue to refer to Figure 4 and Figure 5 In one of the embodiments, the second limit member 430 includes a second limit wheel 432 and a second limit seat 431, and the second limit wheel 432 is rotationally connected to the second limit seat 431. The platform plate 120 moving to the loading and unloading position can abut against the second limit wheel 432.

[0084] Specifically, when the driving assembly 300 drives the first chain 130 and the second chain 140 to move so as to move the platform plate 120 along the vertical direction, the second limit wheel 432 can rotate relative to the platform plate 120 along the second direction, so as to reduce the frictional force and make the platform plate 120 move stably.

[0085] Refer to Figure 2 , Figure 3 and Figure 4 In one of the embodiments, the loading and unloading device includes a second lifting module 200, the second lifting module 200 and the first lifting module 100 are arranged at intervals along the horizontal first direction, and the second lifting module 200 is drivingly connected to the driving assembly 300; the second lifting module 200 rotationally connects a pallet, and the pallet on the first lifting module 100 and the pallet on the second lifting module 200 corresponding in height are used to support both ends of the materials. It can be understood that, that is, the pallet on the first lifting module 100 is used to support one end of the materials, and the pallet on the second lifting module 200 corresponding in height to the pallet on the first lifting module 100 is used to support the other end of the materials; wherein the driving assembly 300 is used to drive the pallet in the second lifting assembly to move in a loop in the plane and in the opposite direction to the movement direction of the pallet on the first lifting module 100.

[0086] The second lifting module 200 can be identical to the first lifting module 100. Specifically, the second lifting module 200 is not described in detail to avoid redundancy.

[0087] To distinguish the pallets in the first lifting module 100 and the second lifting module 200, the pallets in the first lifting module 100 are defined as first pallets 110, and the pallets in the second lifting module 200 are defined as second pallets 210. The transport area is located between the first lifting module 100 and the second lifting module 200. The two ends of the material located in the transport area can be supported by the first pallets 110 on the first lifting module 100 and the second pallets 210 on the second lifting module 200. When the driving assembly 300 drives the first pallets 110 and the second pallets 210 to move in a closed loop in the vertical plane in opposite directions, the first pallets 110 and the second pallets 210 in the transport area can simultaneously move the material in the vertical direction, thereby transporting the material.

[0088] Referring to Figure 2 , Figure 3 , Figure 8 and Figure 9 , Figure 8 a schematic view of the driving assembly 300 in the feeding and discharging device provided by the present application; Figure 9 is Figure 3 an enlarged view of A in FIG. 4. In one embodiment, the driving assembly 300 includes a third driving member 310, a transmission shaft 320, a first bevel gear 330, a second bevel gear 340, a third bevel gear 350, and a fourth bevel gear 360. The transmission shaft 320 is rotationally connected to the third driving member 310. The first bevel gear 330 and the second bevel gear 340 are respectively sleeved on the two ends of the transmission shaft 320. The third bevel gear 350 is transmissionally connected to the first lifting module 100, and the third bevel gear 350 is in meshing transmission with the first bevel gear 330. The fourth bevel gear 360 is transmissionally connected to the second lifting module 200, and the fourth bevel gear 360 is in meshing transmission with the second bevel gear 340.

[0089] Specifically, the third driving member 310 drives the transmission shaft 320 to rotate around the horizontal first direction, and the first bevel gear 330 and the second bevel gear 340 rotate synchronously with the transmission shaft 320, thereby driving the third bevel gear 350 and the fourth bevel gear 360 to rotate. Since the third bevel gear 350 is transmissionally connected to the first lifting module 100, and the fourth bevel gear 360 is transmissionally connected to the second lifting module 200, the first pallets 110 in the first lifting module 100 and the second pallets 210 in the second lifting module 200 are driven to move synchronously, so that the first pallets 110 and the second pallets 210 always maintain the same height, thereby enabling the material to be transported smoothly and ensuring the transport precision of the material.

[0090] With reference to the accompanying drawings being continued Figure 2 、 Figure 3 、 Figure 8 and Figure 9 , in one of the embodiments, the driving assembly 300 comprises a fifth bevel gear 311 and a sixth bevel gear 312, the fifth bevel gear 311 is drivingly connected to the third driving member 310, the sixth bevel gear 312 is sleeved on the transmission shaft 320 between the first bevel gear 330 and the second bevel gear 340, and the sixth bevel gear 312 is in meshing transmission with the fifth bevel gear 311.

[0091] Specifically, the sixth bevel gear 312 is arranged in the region between the first lifting module 100 and the second lifting module 200, and the fifth bevel gear 311 and the third driving member 310 are both arranged in the region between the first lifting module 100 and the second lifting module 200. By the meshing transmission between the fifth bevel gear 311 and the sixth bevel gear 312, the third driving member 310 can drive the transmission shaft 320 to rotate, thereby avoiding the third driving member 310 being arranged on one side of the transmission shaft 320 in the axial direction, saving space, and making the structure of the conveying device more compact.

[0092] With reference to the accompanying drawings being continued Figure 2 、 Figure 3 、 Figure 4 、 Figure 8 and Figure 9 , in one of the embodiments, in the first lifting module 100, the third bevel gear 350, the first driving sprocket 131 corresponding to the first chain 130, and the second driving sprocket 141 corresponding to the second chain 140 are coaxially arranged; in the second lifting module 200, the fourth bevel gear 360, the first driving sprocket 131 corresponding to the first chain 130, and the second driving sprocket 141 corresponding to the second chain 140 are coaxially arranged.

[0093] Specifically, when the first bevel gear 330 and the second bevel gear 340 rotate synchronously with the transmission shaft 320, the third bevel gear 350 and the fourth bevel gear 360 are driven to rotate synchronously, the first driving sprocket 131 and the second driving sprocket 141 are driven to rotate synchronously, the first chain 130 and the second chain 140 are driven to rotate synchronously, the platform plate 120 is kept in a horizontal state, the first supporting plate 110 and the second supporting plate 210 are kept in a horizontal state, and the material can be smoothly conveyed, thereby ensuring the conveying accuracy of the material.

[0094] Further, the feeding and discharging device comprises a first support frame 440 and a second support frame 450, the first support frame 440 and the second support frame 450 are respectively arranged on the sides far away from the first chain 130 and the second chain 140, the first driving sprocket 131 and the first driven sprocket 132 are respectively installed on the first support frame 440, and the second driving sprocket 141 and the second driven sprocket 142 are respectively installed on the second support frame 450. Preferably, the second limiting seat 431 on one side of the first chain 130 is installed on the first support frame 440, and the second limiting seat 431 on one side of the second chain 140 is installed on the second support frame 450, so that the second limiting wheel 432 can stably abut against the two sides of the platform plate 120 moving to the connection position between the first region and the second region of the first chain 130 and the second chain 140.

[0095] Further, the feeding and discharging device comprises a transmission rod 390, one end of the transmission rod 390 passes through the first support frame 440, and the other end of the transmission rod 390 passes through the second support frame 450. The first driving sprocket 131 and the second driving sprocket 141 are sleeved on the transmission rod 390 between the first support frame 440 and the second support frame 450. In the first lifting module 100, the third bevel gear 350 is sleeved on the side of the transmission rod 390 extending out of the second support frame 450, and in the second lifting module 200, the fourth bevel gear 360 is sleeved on the side of the transmission rod 390 extending out of the second support frame 450, so that the transmission rod 390 drives the first driving sprocket 131 and the second driving sprocket 141 to rotate synchronously through the transmission of the third bevel gear 350 and the fourth bevel gear 360.

[0096] Referring to Figure 2 , Figure 3 , Figure 10 and Figure 11 , Figure 10 the schematic view of the adjusting assembly 500 in the feeding and discharging device provided by the present application; Figure 11 is Figure 3 the enlarged view of B in FIG. 5. In one embodiment, the feeding and discharging device further comprises an adjusting assembly 500, the adjusting assembly 500 comprises a second driving member, an adjusting rod 520, a first adjusting seat 530 and a second adjusting seat 540, the adjusting rod 520 is in transmission connection with the second driving member, the first adjusting seat 530 and the second adjusting seat 540 are respectively threadedly connected with the two ends of the adjusting rod 520 and have opposite rotation directions, and the first adjusting seat 530 and the second adjusting seat 540 are respectively connected with the first lifting module 100 and the second lifting module 200; the second driving member is used for driving the adjusting rod 520 to rotate, so that the first adjusting seat 530 and the second adjusting seat 540 are relatively far away from each other and close to each other.

[0097] Specifically, the second driving member drives the adjusting rod 520 to rotate around the horizontal first direction, the first adjusting seat 530 is connected to the first support frame 440, the second adjusting seat 540 is connected to the second support frame 450, and the first adjusting seat 530 and the second adjusting seat 540 are respectively threadedly connected to two ends of the adjusting rod 520 and have opposite rotation directions, so that the first adjusting seat 530 and the second adjusting seat 540 respectively drive the first lifting module 100 and the second lifting module 200 to move away from and close to each other through threaded transmission, thereby adjusting the distance between the first supporting plate 110 and the second supporting plate 210, facilitating the carrying of materials of different sizes, and further improving the adaptability of the device.

[0098] Further, the first supporting plate 110 and the second supporting plate 210 can be replaced according to different sizes of the materials, so that the middle of the materials can be stably supported, and collision of the first supporting plate 110 and the second supporting plate 210 due to excessive length can be avoided.

[0099] Continuing to refer to Figure 2 , Figure 3 , Figure 10 and Figure 11 , in one embodiment, the adjusting assembly 500 further comprises a first adjusting bevel gear 550 and a second adjusting bevel gear 560, the first adjusting bevel gear 550 is in transmission connection with the first driving member, the second adjusting bevel gear 560 is sleeved on the adjusting rod 520 between the first adjusting seat 530 and the second adjusting seat 540, and the second adjusting bevel gear 560 is in meshing transmission with the first adjusting bevel gear 550.

[0100] Specifically, the second adjusting bevel gear 560 is arranged in the region between the first lifting module 100 and the second lifting module 200, and the first adjusting bevel gear 550 and the first driving member are both arranged in the region between the first lifting module 100 and the second lifting module 200, so that the first driving member can drive the adjusting rod 520 to rotate through the meshing transmission between the second adjusting bevel gear 560 and the first adjusting bevel gear 550, thereby avoiding the arrangement of the first driving member on one side of the axial direction of the adjusting rod 520, saving space, and making the structure of the conveying device more compact.

[0101] Further, the adjusting assembly 500 further comprises an adjusting hand wheel 510, the first adjusting bevel gear 550 is in transmission connection with the adjusting hand wheel 510, and the adjusting hand wheel 510 is rotated by hand to replace the second driving member to drive the adjusting rod 520 to rotate, thereby more conveniently adjusting the distance between the first lifting module 100 and the second lifting module 200, and improving the adaptability of the feeding and discharging device.

[0102] Further, the adjusting hand wheel 510 is arranged in the second region between the first lifting module 100 and the second lifting module 200, and since the first supporting plate 110 and the second supporting plate 210 in the second region are in the overturning state, the distance between the first supporting plate 110 and the second supporting plate 210 is large, so that the adjusting hand wheel 510 can be avoided.

[0103] Reference Figure 1 In one of the embodiments, the feeding and discharging device includes a mechanical hand 610 arranged above the conveying region, and it can be understood that, based on the above-mentioned embodiment that the first supporting plate 110 and the second supporting plate 210 in the conveying region are used to move the material along the vertical direction synchronously to convey the material, the mechanical hand arranged in this embodiment can further transfer the conveyed material to other processes, that is, the material can be conveniently clamped and placed. The feeding and discharging device includes a plurality of oppositely arranged first lifting modules 100 and second lifting modules 200, so as to improve the efficiency of feeding and discharging. Preferably, the oppositely arranged first lifting modules 100 and second lifting modules 200 are two, which are arranged at intervals along the second direction and are respectively located on both sides of the mechanical hand 610, so as to facilitate the clamping and placing of the mechanical hand 610.

[0104] Further, the feeding and discharging device includes a roller 620, a rack 630 and a machine shell 640, the first supporting frame 440 and the second supporting frame 450 are installed on the rack 630, and the first lifting module 100 and the second lifting module 200 are provided with the machine shell 640 on the side opposite to each other, so as to play a role of dustproof for the material. The roller 620 is installed at the lower end of the rack 630, so as to facilitate the movement of the feeding and discharging device.

[0105] The technical features of the above-mentioned embodiments can be combined arbitrarily, and in order to make the description simple, all possible combinations of the technical features in the above-mentioned embodiments are not described, however, as long as the combinations of the technical features do not exist contradictory, it should be considered that it is within the scope of the present application.

[0106] The above-mentioned embodiments only express several embodiments of the present application, the description is more specific and detailed, but it cannot be understood as the limitation of the scope of the patent. It should be pointed out that, for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are within the scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A loading and unloading device, characterized in that, The system includes a first lifting module and a drive assembly. The first lifting module includes a first chain, a limiting assembly, an abutment block, and at least two trays. The first lifting module is tractively connected to the drive assembly. The trays are rotatably connected to the first chain. The abutment blocks corresponding to the trays are connected to the first chain. The drive assembly is used to drive the first chain to make circular motion of the trays in a plane. The pallet includes a second section and a first section for carrying materials; Along the length of the pallet, the first segment and the second segment are respectively located on both sides of the position where the pallet is rotatably connected to the first chain; In the transport area, when the pallet is located in the first area, the first segment is supported on the abutment block to support the material, wherein the first area is located within the vertical segment of the first chain; When the pallet moves upward to the second region, the second segment abuts against the limiting component to allow the pallet to continue moving upward, while the first segment flips upward; among two adjacent pallets, when the first segment of the upper pallet flips upward, the lower pallet is in the loading / unloading position; When the tray abuts against the lower end of the limiting component, the distance from the limiting component to the rotational connection position is not less than the distance from the abutting block to the rotational connection position; The first lifting module also includes a first limiting member. In the transportation area, the pallet that moves to the first area can abut against the first limiting member to limit the displacement of the pallet along the length direction of the pallet.

2. The loading and unloading device according to claim 1, characterized in that, The first chain is tensioned by a first driving sprocket and a first driven sprocket spaced apart in the vertical direction. In the horizontal direction perpendicular to the axis of rotation of the first driven sprocket, the limiting component is located on the side of the first driven sprocket closer to the transport area.

3. The loading and unloading device according to claim 2, characterized in that, The second region is the arc-shaped segment of the first chain. In the transport area, the pallet that moves to the connection between the first region and the second region abuts against the lower end of the limiting component.

4. The loading and unloading device according to claim 3, characterized in that, The first lifting module includes a first driving component, the first driven sprocket and the limiting component are connected to the first driving component, and the first driving component is used to drive the first driven sprocket and the limiting component to move synchronously.

5. The loading and unloading device according to any one of claims 1-4, characterized in that, The first lifting module further includes a fixing block, which is connected to the first chain and extends along the direction from the second segment to the first segment. The pallet is rotatably connected to the fixing block. The abutting block extends from the fixing block toward the tray.

6. The loading and unloading device according to claim 1, characterized in that, The first lifting module includes two second limiting members. In the transportation area, the two sides of the pallet that moves to the first area can respectively abut against the corresponding second limiting members to limit the displacement of the pallet along the width direction of the pallet.

7. The loading and unloading device according to any one of claims 1-4, characterized in that, The loading and unloading device includes a second lifting module, the second lifting module and the first lifting module are spaced apart along a horizontal first direction, and the second lifting module is tractively connected to the drive assembly; The second lifting module is rotatably connected to a pallet. The pallet on the first lifting module and the pallet on the second lifting module, which are at the same height, are used to support both ends of the material. The driving component is used to drive the pallet in the second lifting module to make a circular motion in the plane, and the motion direction is opposite to that of the pallet on the first lifting module.

8. The loading and unloading device according to claim 7, characterized in that, The loading and unloading device further includes an adjustment component, which includes a second driving member, an adjustment rod, a first adjustment seat, and a second adjustment seat. The adjustment rod is tractively connected to the second driving member. The first adjustment seat and the second adjustment seat are threaded to the two ends of the adjustment rod and rotate in opposite directions. The first adjustment seat and the second adjustment seat are respectively connected to the first lifting module and the second lifting module. The second driving member is used to drive the adjusting rod to rotate, so that the first adjusting seat and the second adjusting seat move away from each other and closer together.

9. The loading and unloading device according to any one of claims 1-4, characterized in that, In the transport area, the pallet located in the first area is in a horizontal position.

10. The loading and unloading device according to any one of claims 1-4, characterized in that, The abutment block includes a first abutment surface, a second abutment surface, and a third abutment surface, wherein the first abutment surface and the third abutment surface are opposite to each other, and the second abutment surface is located between the first abutment surface and the third abutment surface; in the transportation area, when the pallet is located in the first area, the first segment abuts against the telescopic first abutment surface; in the non-transportation area, when the pallet is located in the first area, the second segment abuts against the third abutment surface.

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