Conveying tool

Abstract

The utility model relates to the technical field of article conveying, and discloses a conveying tool which comprises a rack. The roller mechanism is rotatably arranged on the rack and used for supporting an object to be conveyed; the driving mechanism is movably arranged on the rack in the first direction and used for driving the to-be-conveyed object to move in the first direction; and the position adjusting mechanism is movably arranged on the rack in the second direction and used for adjusting the relative position of the to-be-conveyed object and the rack in the second direction, and an included angle is formed between the first direction and the second direction. According to the conveying tool provided by the embodiment of the utility model, the relative position of the to-be-conveyed object and the rack in the second direction can be adjusted by utilizing the position adjusting mechanism, so that the accuracy of conveying the to-be-conveyed object in place is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of article conveying, in particular to a conveying tool. Background Art

[0002] The conveying tooling in the related technology can be used to convey objects to be conveyed, but the position of the objects to be conveyed on the conveying tooling may be offset, or the objects to be conveyed may be offset relative to the conveying tooling during the conveying process, causing the objects to be conveyed to deviate from the predetermined range when they are delivered to their place. The conveying accuracy of the conveying tooling is low, which may affect production efficiency and even cause the objects to be conveyed to collide and be damaged and scrapped. Utility Model Content

[0003] In view of this, the utility model provides a conveying tool to solve the problem of low conveying accuracy.

[0004] The utility model provides a conveying tool, comprising: a frame; a roller mechanism rotatably provided on the frame and used for supporting an object to be conveyed; a driving mechanism movably provided on the frame along a first direction and used for driving the object to be conveyed to move along the first direction; a position adjustment mechanism movably provided on the frame along a second direction and used for adjusting the relative position of the object to be conveyed and the frame in the second direction, wherein the first direction and the second direction are arranged at an angle.

[0005] Beneficial effects: The roller mechanism can reduce the friction between the object to be conveyed and the frame, thereby improving the conveying efficiency of the object to be conveyed; the driving mechanism can reduce labor intensity, improve efficiency and safety, and the object to be conveyed is evenly stressed and not easily deviated during the conveying process, effectively controlling the moving position of the object to be conveyed, and ensuring the accuracy of the object to be conveyed in place; when the object to be conveyed needs to be placed on the frame, the position adjustment mechanism can move along the second direction toward the edge of the frame to avoid the object to be conveyed, making it easier for the object to be conveyed to be placed on the frame; when the object to be conveyed is driven by the driving mechanism and moves relative to the frame in the first direction, the position adjustment mechanism can timely adjust the relative position of the object to be conveyed and the frame in the second direction, which can improve the accuracy of the object to be conveyed in place, and the object to be conveyed has high accuracy in place and low probability of damage.

[0006] In an optional embodiment, the position adjustment mechanism includes: a limit plate for stopping the object to be conveyed; a plurality of guide shafts, wherein one of the limit plate and the frame is connected to the guide shaft, and the other of the limit plate and the frame is slidably engaged with the guide shaft, and the guide shaft extends along the second direction, and a plurality of the guide shafts are arranged at intervals along the first direction; a threaded rod, wherein one of the limit plate and the frame is rotatably connected to the threaded rod, and the other of the limit plate and the frame is threadedly engaged with the threaded rod, and when the threaded rod rotates, the limit plate is driven to move in the second direction.

[0007] Beneficial effect: not only can the limit plate be moved relative to the frame in the second direction, but also, through the setting of the guide shaft, it can guide the limit plate and improve the stability of the limit plate movement.

[0008] In an optional embodiment, the frame includes: a main frame, the roller mechanism and the driving mechanism are arranged on the main frame; two support plates, the two support plates are arranged on opposite sides of the main frame in the second direction, and the roller mechanism and the limit plate are located between the two support plates in the second direction; wherein, there are multiple position adjustment mechanisms, and each support plate is connected to at least one position adjustment mechanism.

[0009] Beneficial Effects: The main frame can be provided to fix the relative position between the roller mechanism and the drive mechanism. The two support plates can be provided to facilitate the installation of position adjustment mechanisms on opposite sides of the main frame in the second direction, thereby improving the accuracy of adjusting the position of the conveyed object and making the installation of the position adjustment mechanism more convenient.

[0010] In an optional embodiment, there are two roller mechanisms, which are arranged on opposite sides of the main frame in the second direction; the limit plate is located above the roller mechanism; in the second direction, the limit plate does not exceed the inner end surface of the roller mechanism located on the same side of the main frame.

[0011] Beneficial Effects: By providing two roller mechanisms, the conveyed object can be supported on opposite sides in the second direction, ensuring smooth movement of the conveyed object during transportation, and the conveyed object moves relatively smoothly. In addition, the movement range of the limit plate in the second direction does not exceed the inner end surface of the roller mechanism, which can prevent the conveyed object from being separated from the roller mechanism, ensuring smooth conveyance of the conveyed object. In addition, the limit plate has a large range of movement, which increases the adjustment accuracy of the position of the conveyed object.

[0012] In an optional embodiment, the conveying tooling has an outlet end in the first direction, and the outlet end is suitable for the object to be conveyed to leave the conveying tooling; the frame also includes: two limit blocks, the two limit blocks are arranged on opposite sides of the frame in the second direction, the roller mechanism is located between the two limit blocks in the second direction, and the position adjustment mechanism is arranged on the side of the limit block close to the outlet end.

[0013] Beneficial Effects: By providing a limit block, the object to be conveyed is prevented from escaping from the conveying fixture along the second direction. As the object to be conveyed gradually approaches the exit end, the relative position of the object to be conveyed and the conveying fixture in the second direction is precisely adjusted by the position adjustment mechanism. In this way, the position accuracy of the object to be conveyed after it is delivered into position can be guaranteed, and the size of the position adjustment mechanism can be reduced. Since the structure of the position adjustment mechanism is more complex than that of the limit block, the cost of the position adjustment mechanism is higher than that of the limit block for the same size. Reducing the size of the position adjustment mechanism can achieve the purpose of reducing costs. Moreover, the reduced size of the position adjustment mechanism reduces the energy required for the position adjustment mechanism to move, which is conducive to reducing energy consumption and improving the convenience of operation.

[0014] In an optional embodiment, the frame also includes a mounting seat, and the conveying tooling also includes: a limit rotating rod, which is rotatably provided on the mounting seat between a limit position and a movable position; an elastic member, one end of the elastic member is connected to the rotating end of the limit rotating rod, and the other end of the elastic member is connected to the mounting seat, for limiting the limit rotating rod to the limit position or the movable position; wherein, when the limit rotating rod is in the limit position, the rotating end of the limit rotating rod is located on the inner side of the mounting seat, for limiting the relative position of the object to be conveyed and the conveying tooling in the first direction; when the limit rotating rod is in the movable position, the rotating end of the limit rotating rod is located on the outer side of the mounting seat.

[0015] Beneficial effect: By setting a limit rotating rod and rotating the limit rotating rod to the limit position, it is possible to prevent the conveyed object from sliding toward the outlet end, thereby ensuring the relative position between the conveyed object and the conveying tooling is stable, and preventing the conveyed object from detaching from the conveying tooling. By setting an elastic member, it is possible to limit the position of the limit rotating rod. When the limit rotating rod is in the limit position, the elastic member limits the limit rotating rod in the limit position. When the limit rotating rod is in the active position, the elastic member limits the limit rotating rod in the active position. The rotation of the limit rotating rod needs to overcome the elastic force of the elastic member, so it can prevent the limit rotating rod from shaking under non-human operation, thereby improving the working reliability of the conveying tooling.

[0016] In an optional embodiment, the conveying tooling further includes: a controller, the controller being connected to the driving mechanism via a wire; a control box, provided on the frame, the controller being removably placed on the control box; a winding post, rotatably provided on the frame, the wire being wound around the winding post; a wire holding piece, provided on the outer circumference of the winding post, a plurality of wire holding grooves being provided along the outer circumference of the wire holding piece, the plurality of wire holding grooves being arranged at intervals along the circumference of the wire holding piece, and the wire being held in at least one of the wire holding grooves.

[0017] Beneficial effects: The control box can be used to place the controller to prevent the controller from moving relative to the frame when not in use, and can protect the controller and reduce the probability of damage to the controller. The winding post can be used to be wound by the controller's wires to prevent the controller's wires from swinging around, and reduce the probability of the controller's wires interfering with other objects. In addition, the controller's wires can be set longer. During the transmission of the object to be conveyed, the operator can move the controller while constantly observing the state of the object to be conveyed, to prevent the object from being damaged by collision, and can timely adjust the drive mechanism to adjust the drive speed and improve the conveying efficiency. The wire clamping piece can fix the wire to the winding post through the setting of the wire clamping groove, to prevent the wire from separating from the winding post without human operation, and further reduce the probability of the controller's wires swinging around.

[0018] In an optional embodiment, the driving mechanism includes: a driving member; a transmission chain, which is in transmission connection with the driving member; a plurality of support gears, which are provided on the frame, and the plurality of support gears are arranged at intervals along the first direction, and the transmission chain is sleeved on the plurality of support gears and meshed with the support gears; a pushing member, which is connected to the transmission chain, and the driving member drives the transmission chain to rotate, and the transmission chain drives the pushing member to move along the first direction to push the object to be conveyed to move along the first direction.

[0019] Beneficial effects: The pushing member can push the object to be conveyed to move in the first direction, and the transmission chain can transmit power between the driving member and the pushing member, thereby increasing the moving range of the pushing member in the first direction, and the driving mechanism has a simple structure and reliable transmission.

[0020] In an optional embodiment, the driving mechanism further includes: a pull rod, the pull rod including a hanging section and two connecting sections, the hanging section is located on the side of the pushing member away from the object to be conveyed, the two connecting sections are connected to the two ends of the hanging section, and the connecting sections are used to connect with the object to be conveyed.

[0021] Beneficial effect: By setting the pull rod and the pushing member together, the object to be conveyed can be moved along the first direction toward the outlet end and away from the outlet end, thereby realizing the reversing conveying of the object to be conveyed in the first direction. The functions of the conveying tooling are more diverse, and the applicability of the conveying tooling is increased.

[0022] In an optional embodiment, the frame has a first area and a second area, the first area and the second area are connected and arranged along the first direction, and the position adjustment mechanism is arranged in the first area; the roller mechanism includes: a plurality of first rollers, a plurality of first rollers are arranged in the second area and arranged at intervals along the first direction; a plurality of second rollers, a plurality of second rollers are arranged in the first area and arranged at intervals along the first direction, the inner end surface of the second roller is flush with the inner end surface of the first roller, and the outer end surface of the second roller exceeds the outer end surface of the second roller.

[0023] Beneficial Effects: The second area is narrow, allowing it to be inserted into the object to be transported, facilitating the transport of the object into position and avoiding a gap in the first direction between the conveying tool and the object to be transported. This significantly increases the probability of the object being transported into position and enhances the reliability of battery pack transport. Furthermore, the first area is wide, allowing the object to be placed in the first area when it is placed on the conveying tool, ensuring convenient placement of the object on the conveying tool. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 This is one of the structural diagrams of the conveying tooling according to an embodiment of the present utility model;

[0026] Figure 2 This is the second structural diagram of the conveying tooling according to the embodiment of the present utility model;

[0027] Figure 3 This is the third structural diagram of the conveying tooling according to the embodiment of the present utility model;

[0028] Figure 4 This is the fourth structural diagram of the conveying tooling according to the embodiment of the utility model;

[0029] Figure 5 for Figure 1A partial enlarged schematic diagram;

[0030] Figure 6 for Figure 1 A partial enlarged schematic diagram of B in the middle;

[0031] Figure 7 for Figure 3 A partial enlarged schematic diagram of center C;

[0032] Figure 8 This is a schematic diagram of the partial structure of the driving mechanism of the conveying tooling according to an embodiment of the present utility model;

[0033] Figure 9 This is an exploded view of the driving mechanism of the conveying tooling according to an embodiment of the present utility model;

[0034] Figure 10 for Figure 9 A partial enlarged schematic diagram of D in the middle;

[0035] Figure 11 This is a schematic structural diagram of the pull rod of the conveying tooling according to an embodiment of the present utility model.

[0036] Description of reference numerals:

[0037] 1. Conveying tooling;

[0038] 100, rack; 101, first area; 102, second area; 110, main frame; 120, support plate; 130, limit block; 140, mounting seat; 150, outlet port;

[0039] 200, roller mechanism; 210, first roller; 220, second roller;

[0040] 300, driving mechanism; 310, driving member; 311, driving gear; 320, transmission chain; 330, supporting gear; 340, pushing member; 341, pushing seat; 342, sliding block; 343, pushing ear; 344, clamping block; 350, pulling rod; 351, hanging section; 352, connecting section; 360, sliding rail; 370, position detection device; 380, fixing plate; 381, fixing gear;

[0041] 400, position adjustment mechanism; 410, limit plate; 420, guide shaft; 430, threaded rod; 431, rotating handle;

[0042] 500, limit rotating rod; 510, elastic member;

[0043] 600, controller; 610, control box; 620, winding column; 630, wire clamping piece; 631, wire clamping groove; 700, first forklift arm; 710, second forklift arm. DETAILED DESCRIPTION

[0044] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts shall fall within the scope of protection of the present invention.

[0045] In the related technology, conveying tooling can be used to convey objects to be conveyed. For example, battery packs need to be placed in energy storage containers. Initially, the battery pack entry conveying tooling adopts a mechanical roller mechanism and relies on manpower to push. It is not only labor-intensive, inefficient, and has a high risk factor, but the battery pack may be laterally offset due to uneven force on both sides during the entry process, resulting in the battery pack entry position being off-center. In particular, as energy storage containers develop towards high energy, the number of battery packs that can be placed in each energy storage container continues to increase, and the weight of a single battery pack continues to increase. The installation height of the battery pack is different, which further increases the labor intensity.

[0046] Therefore, some conveying tools use a drive mechanism to drive the battery pack to move toward the energy storage container without manual pushing, achieving the technical effect of reducing labor intensity, improving efficiency and safety, and the battery pack is evenly stressed and not easily displaced.

[0047] However, the inventor discovered during use that the above-mentioned conveying tooling is provided with limiting structures on two opposite sides in the width direction thereof, which are used to limit the position of the battery pack in the width direction of the conveying tooling. In order to facilitate the placement of the battery pack on the conveying tooling, the limiting distance between the limiting structures on two opposite sides in the width direction of the conveying tooling is usually much larger than the size of the battery pack in the width direction of the conveying tooling, and the limiting structures are fixed in position on the conveying tooling and cannot be moved. Therefore, if there is a deviation between the battery pack and the energy storage container in the width direction of the conveying tooling when the battery pack is placed, or if there is a deviation between the battery pack and the energy storage container in the width direction of the conveying tooling during transportation, the conveying tooling cannot effectively adjust the position of the battery pack, resulting in the battery pack being easily inaccurately positioned when conveyed into the energy storage container, and there is even a risk of the battery pack colliding with the energy storage container.

[0048] In order to solve the above technical problems, the inventors designed a conveying tool 1 according to an embodiment of the present utility model.

[0049] The following combination Figures 1 to 11 , describing the embodiments of the present utility model.

[0050] According to an embodiment of the present invention, a conveying tool 1 is provided, which includes a frame 100, a roller mechanism 200, a drive mechanism 300, and a position adjustment mechanism 400. The conveying tool 1 can be used to convey battery packs into an energy storage box.

[0051] The roller mechanism 200 is rotatably mounted on the frame 100 and is used to support the object to be conveyed. In this way, when the object to be conveyed moves relative to the frame 100, the friction between the object to be conveyed and the frame 100 can be reduced, thereby improving the conveying efficiency of the object to be conveyed and reducing the conveying cost.

[0052] The drive mechanism 300 is movably mounted on the frame 100 and is configured to drive the conveyed object in a first direction. This eliminates the need for manual movement, reduces labor intensity, improves efficiency and safety, and ensures that the object is evenly stressed and not easily displaced during conveyance. This effectively controls the object's position and ensures precise delivery.

[0053] The position adjustment mechanism 400 is movably mounted on the frame 100 and is disposed on opposite sides of the frame 100 in the second direction. The position adjustment mechanism 400 is used to adjust the relative position of the object to be conveyed and the frame 100 in the second direction. The first direction and the second direction are arranged at an angle. The first direction and the second direction can be arranged perpendicular to each other. For example, the first direction is the length direction of the conveying tool 1, and the second direction is the width direction of the conveying tool 1.

[0054] Specifically, when the object to be conveyed needs to be placed on the rack 100, the position adjustment mechanism 400 can move along the second direction toward the edge of the rack 100 to avoid the object to be conveyed and facilitate the placement of the object to be conveyed on the rack 100; when the object to be conveyed is driven by the driving mechanism 300 to move relative to the rack 100 in the first direction, the position adjustment mechanism 400 can stop with the object to be conveyed, push the object to be conveyed to move relative to the rack 100 in the second direction, and timely adjust the relative position of the object to be conveyed and the rack 100 in the second direction, which can improve the accuracy of conveying the object to be conveyed into place and reduce the probability of damage.

[0055] For example, when the object to be conveyed is a battery pack and is moved to an energy storage container, the position adjustment mechanism 400 can ensure that the object to be conveyed is centered when entering the box; when the object to be conveyed is an object that needs to be processed, the position adjustment mechanism 400 can ensure that the object to be conveyed arrives at the next processing station accurately, reducing the probability of the object to be conveyed being damaged during processing.

[0056] In some embodiments, as Figure 2As shown, the position adjustment mechanism 400 includes a limit plate 410, a threaded rod 430, and a plurality of guide shafts 420, wherein the number of the guide shafts 420 is at least two and the number of the guide shafts 420 can be at most eight, that is, the number of the guide shafts 420 can be 2, 3, 4, 5, 6, 7, or 8. Of course, it will be understood by those skilled in the art that in order to adapt to different application environments, the number of the guide shafts 420 can be adjusted according to actual conditions, that is, the number of the guide shafts 420 can also exceed 8.

[0057] The limiting plate 410 is used to abut against the object to be conveyed, thereby adjusting the relative position of the object to be conveyed and the frame 100 in the second direction. One of the limiting plate 410 and the frame 100 is connected to a guide shaft 420, and the other of the limiting plate 410 and the frame 100 is slidably engaged with the guide shaft 420. The guide shaft 420 extends in the second direction, and multiple guide shafts 420 are spaced apart along the first direction. One of the limiting plate 410 and the frame 100 is rotatably connected to a threaded rod 430, and the other of the limiting plate 410 and the frame 100 is threadedly engaged with the threaded rod 430. When the threaded rod 430 rotates, it drives the limiting plate 410 to move relative to the frame 100 in the second direction.

[0058] That is to say, the limit plate 410 can be provided with a guide shaft 420, the frame 100 can be provided with a hole that cooperates with the guide shaft 420, and the guide shaft 420 moves in the hole of the frame 100; or the frame 100 can be provided with a guide shaft 420, the limit plate 410 can be provided with a hole that cooperates with the guide shaft 420, and the limit plate 410 moves along the guide shaft 420.

[0059] In addition, the limit plate 410 can be provided with a threaded rod 430, and the frame 100 can be provided with a threaded hole that is threadedly matched with the threaded rod 430. When the threaded rod 430 rotates relative to the threaded hole of the frame 100, the threaded rod 430 will move relative to the frame 100 in its axial direction, thereby driving the limit plate 410 to move relative to the frame 100 in the axial direction of the threaded rod 430; the frame 100 can be provided with a threaded rod 430, and the limit plate 410 can be provided with a threaded hole that is threadedly matched with the threaded rod 430. When the threaded rod 430 rotates relative to the threaded hole of the limit plate 410, the threaded rod 430 will drive the limit plate 410 to move relative to the frame 100 in the axial direction of the threaded rod 430.

[0060] In this way, not only can the limit plate 410 be moved relative to the frame 100 in the second direction, but the setting of the guide shaft 420 can also play a guiding role on the limit plate 410, thereby improving the stability of the movement of the limit plate 410. Moreover, since there are multiple guide shafts 420, the multiple guide shafts 420 can be arranged on opposite sides of the threaded rod 430 in the first direction, ensuring that each area of ​​the limit plate 410 in the first direction moves along the guide shaft 420, avoiding deflection of the limit plate 410, and ensuring the stability of the movement of the limit plate 410.

[0061] In addition, the threaded rod 430 can be equipped with a rotating handle 431, which is connected to the end of the threaded rod 430 away from the limit plate 410 so that the operator can access it. The operator can hold the rotating handle 431 and rotate the rotating handle 431 to rotate the threaded rod 430, thereby achieving the purpose of driving the limit plate 410 to move relative to the frame 100 in the second direction, which is more convenient to use.

[0062] In some embodiments, as Figure 1 and Figure 2 As shown, the rack 100 includes a main frame 110 and two support plates 120 .

[0063] The roller mechanism 200 and the drive mechanism 300 are disposed on the main frame 110. Two support plates 120 are disposed on opposite sides of the main frame 110 in the second direction. The support plates 120 extend beyond the upper surface of the main frame 110 and the upper surface of the roller mechanism 200. The roller mechanism 200 and the limiting plate 410 are located between the two support plates 120 in the second direction. There are multiple position adjustment mechanisms 400, and each support plate 120 cooperates with the guide shaft 420 and threaded rod 430 of at least one position adjustment mechanism 400.

[0064] For example, the number of position adjustment mechanisms 400 is at least two, i.e., one position adjustment mechanism 400 is arranged on each side of the width direction of the rack 100; the number of position adjustment mechanisms 400 is at most six, i.e., three position adjustment mechanisms 400 are arranged on each side of the width direction of the rack 100. The number of position adjustment mechanisms 400 can be 2, 4, or 6. Of course, those skilled in the art will understand that in order to adapt to different application environments, the number of position adjustment mechanisms 400 can be adjusted according to actual circumstances, i.e., the number of position adjustment mechanisms 400 can also exceed 6.

[0065] That is to say, the main frame 110 is provided with position adjustment mechanisms 400 on both sides of the second direction, which adjust the relative position of the object to be conveyed and the frame 100 in the second direction from both sides of the object to be conveyed, and the adjustment efficiency is higher, and the position accuracy after adjustment is also improved.

[0066] The main frame 110 can be provided to fix the relative position between the roller mechanism 200 and the drive mechanism 300. The two support plates 120 can be provided to facilitate the installation of the position adjustment mechanism 400 on opposite sides of the main frame 110 in the second direction, thereby improving the accuracy of adjusting the position of the conveyed object and making the installation of the position adjustment mechanism 400 more convenient.

[0067] In some embodiments, as Figure 1 and Figure 2 As shown, there are two roller mechanisms 200, located on opposite sides of the main frame 110 in the second direction. The limiting plates 410 are located above the roller mechanisms 200. In the second direction, each limiting plate 410 does not extend beyond the inner end surface of the roller mechanism 200 located on the same side of the main frame 110 as the limiting plate 410. The inner end surface of the roller mechanism 200 refers to the end surface of the roller mechanism 200 that is closest to the object to be conveyed.

[0068] By providing two roller mechanisms 200 , the objects to be conveyed can be supported on opposite sides in the second direction, thereby ensuring the smooth movement of the objects to be conveyed during the conveying process and ensuring smooth movement of the objects to be conveyed.

[0069] In addition, the movement range of the limit plate 410 in the second direction does not exceed the inner end surface of the roller mechanism 200, which can avoid separating the object to be conveyed from the roller mechanism 200, ensuring the smoothness of the conveying of the object to be conveyed, and the movement range of the limit plate 410 is large, which increases the adjustment accuracy of the position of the object to be conveyed.

[0070] In some embodiments, as Figure 2 As shown, the conveying fixture 1 has an outlet end 150 in the first direction, and the outlet end 150 is suitable for the conveyed objects to be discharged from the conveying fixture 1. The frame 100 also includes two limit blocks 130, which are respectively provided on opposite sides of the main frame 110 in the second direction. Specifically, each side of the main frame 110 in the second direction can be provided with multiple limit blocks 130. The roller mechanism 200 is located between the two limit blocks 130 in the second direction, and the position adjustment mechanism 400 is closer to the outlet end 150 than the limit blocks 130.

[0071] By setting a limit block 130, the object to be conveyed is prevented from separating from the conveying tooling 1 along the second direction. As the object to be conveyed gradually approaches the outlet end 150, the relative position of the object to be conveyed and the conveying tooling 1 is accurately adjusted by the position adjustment mechanism 400. In this way, the position accuracy of the object to be conveyed after conveyance can be guaranteed and the size of the position adjustment mechanism 400 can be reduced.

[0072] Since the structure of the position adjustment mechanism 400 is more complex than that of the limit block 130, the cost of the position adjustment mechanism 400 is higher than that of the limit block 130 at the same size. Reducing the size of the position adjustment mechanism 400 can achieve the purpose of reducing costs. Moreover, since the size of the position adjustment mechanism 400 is reduced, the energy required for the position adjustment mechanism 400 to move is reduced, which is conducive to reducing energy consumption and improving the convenience of operation.

[0073] In some embodiments, as Figure 1 、 Figure 4 and Figure 5 As shown, the frame 100 is provided with a mounting seat 140, and the conveying tool 1 further includes a limiting rotating rod 500 and an elastic member 510. Among them, the elastic member 510 can be a spring.

[0074] The limit lever 500 is rotatably mounted on the mounting base 140 between a limit position and a movable position. One end of an elastic member 510 is connected to the rotating end of the limit lever 500, and the other end of the elastic member 510 is connected to the mounting base 140. The elastic member 510 is used to limit the limit lever 500 to the limit position or the movable position.

[0075] Among them, when the limit rotating rod 500 is in the limit position, the rotating end of the limit rotating rod 500 is located on the inner side of the mounting seat 140, which is used to limit the relative position of the object to be conveyed and the conveying tooling 1 in the first direction; when the limit rotating rod 500 is in the active position, the rotating end of the limit rotating rod 500 is located on the outer side of the mounting seat 140.

[0076] When the forklift moves the conveying tooling 1, the object to be conveyed may move relative to the conveying tooling 1. Position adjustment mechanisms 400 and limit blocks 130 are provided on opposite sides of the object to be conveyed in the second direction, thereby preventing the object to be conveyed from sliding out of the conveying tooling 1 in the second direction.

[0077] By setting a limit rotating rod 500 and rotating the limit rotating rod 500 to the limit position, the object to be conveyed can be prevented from sliding toward the outlet end 150, thereby ensuring the relative position between the object to be conveyed and the conveying tooling 1 is stable, and preventing the object to be conveyed from escaping from the conveying tooling 1.

[0078] By setting the elastic member 510, the position of the limit rotating rod 500 can be limited. When the limit rotating rod 500 is in the limit position, the elastic member 510 limits the limit rotating rod 500 in the limit position. When the limit rotating rod is in the active position, the elastic member 510 limits the limit rotating rod 500 in the active position. The rotation of the limit rotating rod 500 needs to overcome the elastic force of the elastic member 510, so the limit rotating rod 500 can be prevented from shaking under non-human operation, thereby improving the working reliability of the conveying tooling 1.

[0079] Specifically, the fixed end of the limiting rotating rod 500 is higher than the elastic member 510. When the limiting rotating rod 500 is in the limiting position, the fixed end of the limiting rotating rod 500 is higher than the rotating end of the limiting rotating rod 500. When the limiting rotating rod 500 is in the active position, the fixed end of the limiting rotating rod 500 is higher than the rotating end of the limiting rotating rod 500.

[0080] That is to say, during the process of the limit rotating rod 500 rotating from the limit position to the active position, the length of the elastic member 510 first gradually increases and then gradually decreases. Since the length of the elastic member 510 gradually increases, the elastic force of the elastic member 510 will continue to increase, which plays a damping role on the rotation of the limit rotating rod 500. The elastic force of the elastic member 510 must be overcome before the limit rotating rod 500 can move from the limit position to the active position; similarly, it can be seen that during the process of the limit rotating rod 500 rotating from the active position to the limit position, the length of the elastic member 510 first gradually increases and then gradually decreases. Since the length of the elastic member 510 gradually increases, the elastic force of the elastic member 510 will continue to increase, which plays a damping role on the rotation of the limit rotating rod 500. The elastic force of the elastic member 510 must be overcome before the limit rotating rod 500 can move from the active position to the limit position.

[0081] In some embodiments, as Figures 1-4 、 Figure 7 As shown, the conveying tool 1 further includes a controller 600 , a control box 610 , a winding post 620 and a wire clamping piece 630 .

[0082] The controller 600 is connected to the drive mechanism 300 via wires. The control box 610 is located on the frame 100, and the controller 600 can be detachably placed in the control box 610. The winding post 620 is rotatably located on the frame 100, and the wire is wound around the winding post 620. The wire-holding plate 630 is located on the outer circumference of the winding post 620. The outer circumference of the wire-holding plate 630 is provided with multiple wire-holding grooves 631. The multiple wire-holding grooves 631 are spaced apart along the circumference of the wire-holding plate 630, and the wire is placed in at least one of the wire-holding grooves 631. The number of wire-holding grooves 631 is at least two, and the number of wire-holding grooves 631 is at most six. Of course, those skilled in the art will understand that the number of wire-holding grooves 631 can be adjusted according to actual conditions to adapt to different applicable environments, that is, the number of wire-holding grooves 631 can also exceed six.

[0083] The controller 600 controls the drive mechanism 300 to adjust the drive speed. For example, the controller 600 controls the battery pack as the transported object. First, the drive mechanism 300 is set to a low speed. Then, once the front end of the battery pack enters the energy storage container, the drive mechanism 300 is set to a high speed until the battery pack is completely inside. This prevents collisions between the battery pack and the energy storage container, reducing the likelihood of damage.

[0084] The control box 610 can be used to place the controller 600 to prevent the controller 600 from moving relative to the rack 100 when not in use. The control box 610 can protect the controller 600 and reduce the probability of damage to the controller 600.

[0085] The winding pole 620 can be used to be wound around the wire of the controller 600 to prevent the wire of the controller 600 from swinging around and reduce the probability of the wire of the controller 600 interfering with other objects. In addition, the wire of the controller 600 can be set to be longer. During the transmission of the object to be conveyed, the operator can move the controller 600 and constantly observe the status of the object to be conveyed to avoid collision and damage to the object to be conveyed, and can timely adjust the drive mechanism 300 to adjust the drive speed to improve the conveying efficiency.

[0086] The wire retaining piece 630, through the provision of the wire retaining groove 631, can secure the wire to the winding post 620, preventing the wire from separating from the winding post 620 without human intervention, further reducing the probability of the wire of the controller 600 dangling. In addition, the wire retaining piece 630 can limit the axial position of the wire on the winding post 620, preventing the wire from detaching from the winding post 620 in the axial direction of the winding post 620.

[0087] In some embodiments, as Figure 8 and Figure 9 As shown, the drive mechanism 300 includes a drive member 310, a transmission chain 320, a pusher 340, and a plurality of support gears 330. For example, the number of support gears 330 is at least 2, and the number of support gears 330 can be at most 10. The brushing capacity of the support gears 330 can be 2, 3, 3, 4, 5, 6, 7, 8, 9, or 10. Of course, those skilled in the art will understand that in order to adapt to different application environments, the number of support gears 330 can be adjusted according to actual conditions, that is, the number of support gears 330 can also exceed 10.

[0088] The transmission chain 320 is in transmission connection with the driving member 310. A plurality of support gears 330 are disposed on the frame 100 and are spaced apart along a first direction. The transmission chain 320 is sleeved around and meshes with the support gears 330. A pushing member 340 is connected to the transmission chain 320. The driving member 310 drives the transmission chain 320 to rotate, which in turn drives the pushing member 340 to move along the first direction. The object to be conveyed is pushed by the pushing member 340.

[0089] For example, the driving member 310 can be a driving motor. When the driving motor rotates forward, the transmission chain 320 can rotate clockwise, and when the driving motor rotates reversely, the transmission chain 320 can rotate counterclockwise, or when the driving motor rotates forward, the transmission chain 320 can rotate counterclockwise, and when the driving motor rotates reversely, the transmission chain 320 can rotate clockwise. By changing the rotation direction of the driving member 310, the rotation direction of the transmission chain 320 can be changed, thereby changing the direction of movement of the pushing member 340 in the first direction.

[0090] In addition, there can be two transmission chains 320, and the pushing member 340 is connected to the two transmission chains 320. The two transmission chains 320 are arranged on opposite sides of the frame 100 in the second direction. Each transmission chain 320 is provided with a support gear 330 at both ends in the first direction. The two support gears 330 located at the same end of the two transmission chains 320 in the first direction can be coaxially arranged to ensure the consistency of the rotation of the two transmission chains 320 and avoid deflection of the pushing member 340. The pushing member 340 has high movement stability, and the two support gears 330 located at the same end of the two transmission chains 320 in the first direction can be constructed as an integrated structure, which reduces the disassembly and assembly steps and improves the disassembly and assembly efficiency.

[0091] In addition, the driving member 310 can be connected to driving gears 311 on opposite sides in the second direction, and each driving gear 311 is engaged with a transmission chain 320. The frame 100 is also equipped with a fixing plate 380, and the fixing plate 380 can be connected to fixing gears 381 on opposite sides in the second direction, and each fixing gear 381 is engaged with a transmission chain 320. The fixing gear 381 and the driving gear 311 can be located on opposite sides of the transmission chain 320 in the vertical direction. At least two fixing gears 381 can be provided on each side of the fixing plate 380 in the second direction, and at least two fixing gears 381 are located on opposite sides of the driving gear 311 in the first direction. The fixed gear 381 can apply a force close to the driving gear 311 to the transmission chain 320 to ensure the transmission reliability between the driving gear 311 and the transmission chain 320.

[0092] By providing multiple supporting gears 330, on the one hand, the relative position between the transmission chain 320 and the frame 100 can be fixed to ensure that the transmission chain 320 can rotate relative to the frame 100; on the other hand, the transmission chain 320 can be straightened to prevent the transmission chain 320 from being loose and causing the transmission chain 320 to shake too much. The force transmission efficiency of the transmission chain 320 between the driving member 310 and the pushing member 340 is higher.

[0093] The two cams 342 are connected to each other in a first direction and a second direction and the cam 343 is connected to the two cams 342 and the two cams 343 are connected to each other in a first direction and a second direction and the cam 343 is connected to the two cams 342 and the two cams 343 are connected to the two cams 342 and the two cams 343 are connected to the two cams 340 and the two cams 343 are connected to the two cams 340 and the two cams 343 are connected to the two cams 340 and the two cams 343 are connected to the two cams 340 and the two cams 343 are connected to the two cams 340 and the two cams 343 are connected to the two cams 340 and the two cams 343 are connected to the two cams 340 and the two cams 343 are connected to the two cams 340 and the two cams 343 are connected to the two cams 340 and the two cams 343 are connected to the two cams 340 and the two cams

[0094] The pushing member 340 can also include two clamping blocks 344, both of which are connected to the pushing seat 341, and the two clamping blocks 344 and the two sliders 342 are connected one-to-one. Each clamping block 344 and the pushing seat 341 are located on opposite sides of a transmission chain 320 in the vertical direction, so as to clamp the transmission chain 320 from opposite sides of the transmission chain 320 in the vertical direction, thereby realizing synchronous movement of the transmission chain 320 and the pushing member 340. In this way, the pushing member 340 is subjected to more uniform force on both sides in the second direction, and the movement speed is the same, thereby avoiding deflection of the conveyed object in the second direction.

[0095] In which, the frame 100 can be provided with a position detection device 370 on two opposite sides in the first direction, which is used to detect the position of the pushing member 340, so as to obtain whether the object to be conveyed is in place in the first direction. In which, the position detection device 370 can be a limit switch, an optical sensor, a magnetic field sensor, etc., which detects the position of the pushing member 340 by contact or non-contact.

[0096] In some embodiments, as Figure 1 、 Figure 2 and Figure 11 As shown, the drive mechanism 300 further includes a pull rod 350, which includes a hooking section 351 and two connecting sections 352. The hooking section 351 is located on the side of the pusher 340 facing away from the object to be conveyed. The two connecting sections 352 are connected to both ends of the hooking section 351, and the connecting sections 352 are connected to the object to be conveyed. The pull rod 350 can be generally U-shaped. The hooking section 351 cooperates with the pusher ear 343.

[0097] Specifically, when the pushing member 340 moves along the first direction toward the outlet end 150, the pushing member 340 stops at the object to be conveyed and pushes the object to be conveyed toward the outlet end 150; when the pushing member 340 moves along the first direction toward the direction away from the outlet end 150, the pushing member 340 stops at the hanging section 351, and the hanging section 351 pulls the object to be conveyed away from the outlet end 150 through the two connecting sections 352.

[0098] For example, when the object to be conveyed is a battery pack, when the pushing member 340 moves along the first direction toward the outlet end 150, the pushing member 340 stops at the battery pack and pushes the battery pack into the energy storage container; when the pushing member 340 moves along the first direction toward the outlet end 150, the pushing member 340 stops at the hanging section 351, and the hanging section 351 pulls the battery pack out of the energy storage container through the two connecting sections 352.

[0099] In this way, by setting the pull rod 350 to cooperate with the push member 340, the object to be conveyed can be transported in a first direction toward the direction close to the outlet end 150 and in a direction away from the outlet end 150, thereby realizing the reversing conveying of the object to be conveyed. The functions of the conveying tool 1 are more diverse, and the applicability of the conveying tool 1 is increased.

[0100] In some embodiments, as Figure 1 and Figure 2 As shown, the frame 100 has a first area 101 and a second area 102, which are connected and arranged along a first direction. The position adjustment mechanism 400 is disposed in the first area 101. The roller mechanism 200 includes a plurality of first rollers 210 and a plurality of second rollers 220. The plurality of first rollers 210 are disposed in the second area 102 and arranged at intervals along the first direction. The plurality of second rollers 220 are disposed in the first area 101 and arranged at intervals along the first direction. The inner end surfaces of the second rollers 220 are flush with the inner end surfaces of the first rollers 210, and the outer end surfaces of the second rollers 220 extend beyond the outer end surfaces of the second rollers 220.

[0101] For example, the number of the first rollers 210 is at least 4, that is, at least two first rollers 210 can be provided on each side of the width direction of the frame 100; the number of the first rollers 210 is at most 40, that is, at most 20 first rollers 210 can be provided on each side of the width direction of the frame 100. In other words, the number of the first rollers 210 can be 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, 34, 36, 38, or 40.

[0102] The number of the second rollers 220 is at least 4, i.e., at least 2 second rollers 220 can be provided on each side of the width direction of the frame 100. The number of the second rollers 220 is at most 20, i.e., at most 10 second rollers 220 can be provided on each side of the width direction of the frame 100. In other words, the number of the second rollers 220 can be 4, 6, 8, 10, 12, 14, 16, 18, or 20.

[0103] Of course, those skilled in the art will appreciate that, in order to adapt to different applicable environments, the number of first rollers 210 and the number of second rollers 220 may be adjusted according to actual conditions, that is, the number of first rollers 210 and the number of second rollers 220 may also exceed 20.

[0104] Among them, the inner end face of the first roller 210 refers to the end face of the first roller 210 close to the end of the object to be conveyed in the second direction; the inner end face of the second roller 220 refers to the end face of the second roller 220 close to the end of the object to be conveyed in the second direction; the outer end face of the first roller 210 refers to the end face of the first roller 210 away from the end of the object to be conveyed in the second direction; the outer end face of the second roller 220 refers to the end face of the second roller 220 away from the end of the object to be conveyed in the second direction.

[0105] By aligning the inner end surface of the second roller 220 with the inner end surface of the first roller 210 , it is ensured that the first roller 210 can contact the object to be conveyed in the second direction, and the object to be conveyed can move smoothly between the first roller 210 and the second roller 220 .

[0106] In addition, the outer end surface of the second roller 220 exceeds the outer end surface of the second roller 220, and the size of the second roller 220 in the second direction is larger than the size of the first roller 210 in the second direction, that is, the size of the first area 101 in the second direction is larger than the size of the second area 102 in the second direction.

[0107] Thus, the second region 102 has a smaller width and can be inserted into the object to which the conveyed object is to be transported, facilitating its proper delivery. For example, if the conveyed object is a battery pack and needs to be transported to an energy storage container, the second region 102 can be inserted into the energy storage container, eliminating a gap in the first direction between the conveying fixture 1 and the energy storage container. This significantly increases the probability of the battery pack being properly delivered, and enhances the reliability of battery pack delivery. Furthermore, the first region 101 has a larger width, allowing the conveyed object to be placed in the first region 101 when it is placed on the conveying fixture 1, facilitating easy placement of the conveyed object on the conveying fixture 1. The second roller 220 has a larger contact area with the conveyed object, helping to prevent collisions between the conveyed object and the position adjustment mechanism 400 and the limit block 130.

[0108] In some embodiments, as Figure 3 and Figure 4 As shown, the transport tool 1 further includes a first forklift arm 700 and a second forklift arm 710 .

[0109] The first forklift arm 700 is connected to the frame 100 and extends in a first direction, extending beyond the frame 100 in the first direction. A forklift's fork can be inserted into the first forklift arm 700. There may be two first forklift arms 700, spaced apart in a second direction, with the forklift's forks inserted into each of the two first forklift arms 700. Furthermore, the outlet port 150 and the first forklift arm 700 are located on opposite sides of the frame 100 in the first direction to prevent the forklift from interfering with the movement of the transported items.

[0110] The second forklift arm 710 is connected to the frame 100 and extends in the second direction. The second forklift arm 710 extends beyond the frame 100 in the second direction. A forklift's fork can be inserted into the second forklift arm 710. There may be two second forklift arms 710, spaced apart in the first direction. The forklift's fork is inserted into each of the two second forklift arms 710. The second forklift arms 710 are located between the exit 150 and the first forklift arm 700 in the first direction. Furthermore, the controller 600, control box 610, and winding pole 620 are located on the same side of the frame 100 in the second direction. The second forklift arm 710 is located on the other side of the frame 100 in the second direction. This prevents the second forklift arm 710 from interfering with the operator's movements when holding the controller 600.

[0111] Under normal circumstances, the conveying tooling 1 is connected to the forklift via the first forklift arm 700, and the distance between the forklift and the exit end 150 is relatively far, which can minimize the forklift's influence on the movement of the objects to be conveyed, and the location to which the objects to be conveyed need to be conveyed (for example, when the objects to be conveyed are battery packs, the location to which the objects to be conveyed need to be conveyed is an energy storage container) is relatively far from the forklift, which can effectively avoid interference between the forklift and the location to which the objects to be conveyed need to be conveyed.

[0112] However, in some cases, the environment in which the conveying tool 1 is located does not have enough space in the first direction of the conveying tool 1, so there is not enough space for a forklift to connect to the conveying tool 1 in the first direction of the conveying tool 1. At this time, the second forklift arm 710 is connected to the forklift so that the forklift can move the conveying tool 1.

[0113] By providing the first forklift arm 700 and the second forklift arm 710 , the flexibility of the cooperation between the conveying tool 1 and the forklift can be improved, and the conveying tool 1 can be easily applied to different environments, making the conveying tool 1 more adaptable.

[0114] Although the embodiments of the present invention have been described with reference to the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations shall fall within the scope defined by the appended claims.

Claims

1. A conveying tool, characterized in that: include: Rack(100); A roller mechanism (200) is rotatably mounted on the frame (100) and is used to support objects to be transported; a driving mechanism (300) movably provided on the frame (100) along a first direction, and configured to drive the object to be conveyed to move along the first direction; A position adjustment mechanism (400) is movably provided on the frame (100) along a second direction, and is used to adjust the relative position of the object to be conveyed and the frame (100) in the second direction, wherein the first direction and the second direction are arranged at an angle.

2. The conveying tool according to claim 1, characterized in that: The position adjustment mechanism (400) comprises: A limiting plate (410) is used to abut against the object to be conveyed; a plurality of guide shafts (420), one of the limiting plate (410) and the frame (100) being connected to the guide shaft (420), the other of the limiting plate (410) and the frame (100) being in sliding engagement with the guide shaft (420), the guide shaft (420) extending along the second direction, and the plurality of guide shafts (420) being spaced apart along the first direction; A threaded rod (430), one of the limiting plate (410) and the frame (100) is rotatably connected to the threaded rod (430), and the other of the limiting plate (410) and the frame (100) is threadedly engaged with the threaded rod (430), and when the threaded rod (430) rotates, the limiting plate is driven to move in the second direction.

3. The conveying tool according to claim 2, characterized in that: The frame (100) comprises: A main frame (110), wherein the roller mechanism (200) and the driving mechanism (300) are arranged on the main frame (110); Two support plates (120), the two support plates (120) being arranged on opposite sides of the main frame (110) in the second direction, and the roller mechanism (200) and the limiting plate (410) being located between the two support plates (120) in the second direction; There are multiple position adjustment mechanisms (400), and each support plate (120) is connected to at least one position adjustment mechanism (400).

4. The conveying tool according to claim 3, characterized in that: There are two roller mechanisms (200), and the two roller mechanisms (200) are respectively arranged on two opposite sides of the main frame (110) in the second direction; The limiting plate (410) is located above the roller mechanism (200); In the second direction, each of the limiting plates (410) does not extend beyond the inner end surface of the roller mechanism (200) located on the same side of the main frame (110) as the limiting plate (410).

5. The conveying tool according to any one of claims 1 to 4, characterized in that: The conveying tool (1) has an outlet end (150) in the first direction, and the outlet end (150) is suitable for the object to be conveyed to be separated from the conveying tool (1); The frame (100) further comprises: Two limit blocks (130), the two limit blocks (130) are respectively arranged on opposite sides of the frame (100) in the second direction, the roller mechanism (200) is located between the two limit blocks (130) in the second direction, and the position adjustment mechanism (400) is arranged on a side of the limit block (130) close to the outlet end (150).

6. The conveying tool according to any one of claims 1 to 4, characterized in that: The frame (100) further includes a mounting seat (140), and the conveying tool (1) further includes: A limit rotating rod (500) is rotatably arranged on the mounting seat (140) between a limit position and a movable position; an elastic member (510), one end of the elastic member (510) being connected to the rotating end of the position-limiting rotating rod (500), and the other end of the elastic member (510) being connected to the mounting seat (140), for limiting the position-limiting rotating rod (500) to the position-limiting position or the movable position; When the limiting rotating rod (500) is in the limiting position, the rotating end of the limiting rotating rod (500) is located inside the mounting seat (140), and is used to limit the relative position of the object to be transported and the transport tooling (1) in the first direction; When the limiting rotating rod (500) is in the active position, the rotating end of the limiting rotating rod (500) is located outside the mounting seat (140).

7. The conveying tool according to any one of claims 1 to 4, characterized in that: The conveying tool (1) further comprises: a controller (600), the controller (600) being connected to the driving mechanism (300) via a wire; A control box (610) is provided on the frame (100), and the controller (600) is removably placed on the control box (610); A winding post (620) is rotatably mounted on the frame (100), and the wire is wound around the winding post (620); A wire clamping piece (630) is provided on the outer peripheral surface of the winding column (620); a plurality of wire clamping grooves (631) are provided along the outer peripheral edge of the wire clamping piece (630); the plurality of wire clamping grooves (631) are arranged at intervals along the circumference of the wire clamping piece (630); and the wire is clamped in at least one of the wire clamping grooves (631).

8. The conveying tool according to any one of claims 1 to 4, characterized in that: The driving mechanism (300) comprises: A driving member (310); A transmission chain (320) is in transmission connection with the driving member (310); A plurality of supporting gears (330) are provided on the frame (100), the plurality of supporting gears (330) are spaced apart along the first direction, and the transmission chain (320) is sleeved on the plurality of supporting gears (330) and meshed with the supporting gears (330); The pushing member (340) is connected to the transmission chain (320), and the driving member (310) drives the transmission chain (320) to rotate, and the transmission chain (320) drives the pushing member (340) to move along the first direction to push the object to be conveyed to move along the first direction.

9. The conveying tool according to claim 8, characterized in that: The driving mechanism (300) further comprises: A pull rod (350), the pull rod (350) includes a hanging section (351) and two connecting sections (352), the hanging section (351) is located on the side of the pushing member (340) away from the object to be conveyed, the two connecting sections (352) are connected to the two ends of the hanging section (351), and the connecting sections (352) are used to connect with the object to be conveyed.

10. The conveying tool according to any one of claims 1 to 4, characterized in that: The frame (100) has a first area (101) and a second area (102), the first area (101) and the second area (102) are connected and arranged along the first direction, the position adjustment mechanism (400) is provided in the first area (101), and the width of the first area (101) is greater than the width of the second area (102); The roller mechanism (200) comprises: a plurality of first rollers (210), the plurality of first rollers (210) being disposed in the second area (102) and arranged at intervals along the first direction; A plurality of second rollers (220) are provided in the first area (101) and are spaced apart along the first direction, an inner end surface of the second roller (220) is flush with an inner end surface of the first roller (210), and an outer end surface of the second roller (220) exceeds an outer end surface of the second roller (220).

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