Tray supply device

Abstract

The utility model relates to the technical field of transportation operation, and specifically discloses a tray storage device, which comprises: a plurality of silo columns, which are arranged at intervals to form a tray storage bin for stacking a plurality of trays; a plurality of rotating claws, which are rotatably installed on the top of the corresponding silo columns; a connecting rod driving assembly, which is used to drive the rotating claws to rotate synchronously towards the tray storage bin to clamp the top tray from the side and to drive the rotating claws to rotate synchronously away from the tray storage bin to release the top tray; and a jacking mechanism, which is located below the tray storage bin and is used to jack up or lower the stacked trays. The tray storage device can effectively solve the problem that the top tray and the second top tray of the existing lifting tray storage device can only be lifted synchronously and the top tray cannot be supplied alone.

Description

Technical Field

[0001] This utility model relates to the field of transportation operation technology, and in particular to a material tray supply and storage device. Background Technology

[0002] The lifting-type pallet storage device is a widely used pallet storage equipment in automated production lines, warehousing and logistics. This device typically consists of four vertically arranged columns forming the pallet storage compartment, with a lifting mechanism at the bottom to achieve automatic pallet storage and supply. Specifically:

[0003] When storing material trays, the lifting mechanism descends layer by layer, allowing the trays to be stacked sequentially; while when supplying material trays, the lifting mechanism rises layer by layer, gradually raising the trays to the material retrieval position.

[0004] However, existing lifting tray storage devices have certain technical defects in actual operation. Since the robotic arm can typically only grasp the topmost tray, if the separation distance between the top and second-to-top trays is insufficient when the lifting mechanism raises all trays simultaneously, the second-to-top tray may be lifted along with the top tray due to friction or suction, resulting in failed retrieving or tray misalignment. This not only affects production efficiency but may also lead to equipment damage or material loss due to tray collisions or drops.

[0005] Therefore, it is necessary to improve the existing lifting tray storage device to solve the problem that the top tray and the second-to-top tray of the existing lifting tray storage device can only be lifted and lowered synchronously, and the top tray cannot be supplied independently.

[0006] The information disclosed in this background section is included only to enhance the understanding of the context of this disclosure, and therefore may contain information that does not constitute prior art known to those skilled in the art. Utility Model Content

[0007] One objective of this invention is to provide a material tray supply and storage device that can effectively solve the problem that the top and second-to-top material trays of existing lifting material tray storage devices can only be lifted and lowered synchronously and cannot supply the top material tray independently.

[0008] To achieve the above objectives, this utility model provides a material tray supply and storage device, comprising:

[0009] A number of silo columns are arranged at intervals to form a silo storage bin for stacking multiple silos;

[0010] A plurality of rotating claws are provided, each corresponding to one of the hopper columns, and the rotating claws are rotatably mounted on the top of the corresponding hopper column;

[0011] A linkage drive assembly is connected to each of the rotating claws for driving each of the rotating claws to rotate synchronously toward the tray receiving bin to clamp the top tray from the side, and for driving each of the rotating claws to rotate synchronously away from the tray receiving bin to release the top tray.

[0012] A lifting mechanism is located below the material tray storage compartment and is used to lift or lower each of the stacked material trays.

[0013] Optionally, it also includes two spaced-apart conveyor belt housings, with two hopper columns fixed to the top of each conveyor belt housing;

[0014] The surfaces of the two conveyor belt housings that are close to each other are provided with conveyor belt bodies for conveying the trays to the bottom of the tray storage bin or for laterally sending the trays out of the tray storage bin;

[0015] The lifting mechanism is located between the two conveyor belt bodies.

[0016] Optionally, the linkage drive assembly includes:

[0017] Two rotating crossbars are provided in a one-to-one correspondence with the two conveyor belt shells. The rotating crossbars are rotatably mounted on the two hopper columns on the corresponding conveyor belt shells and pass through the two corresponding rotating claws, so as to drive the rotating claws that pass through to rotate relative to the corresponding hopper columns.

[0018] Two connecting rod assemblies are provided in one-to-one correspondence with the two aforementioned pivot crossbars, and one end of each connecting rod assembly is fixedly connected to the corresponding pivot crossbar.

[0019] A direct-drive linkage mechanism is fixedly disposed relative to the two conveyor belt housings, and the drive end of the direct-drive linkage mechanism is hinged to the two linkage assemblies. The two linkage assemblies drive the two rotating shaft crossbars to rotate in opposite directions relative to each other, thereby causing the rotating claws on the two rotating shaft crossbars to rotate synchronously toward the material tray storage bin or synchronously away from the material tray storage bin.

[0020] Optionally, the linkage assembly includes:

[0021] The first connecting rod, one end of which is fixedly connected to the corresponding pivot crossbar;

[0022] The second link has one end hinged to the other end of the first link, and the other end of the second link is hinged to the link direct drive mechanism.

[0023] Optionally, the linkage direct drive mechanism has several fixed limiting rods fixedly disposed relative to the conveyor belt housing on the side near the material tray storage bin, so as to restrict the material tray from continuing to be conveyed downstream with the conveyor belt body.

[0024] Optionally, the end of the conveyor belt housing away from the linkage direct drive mechanism is provided with a movable pressure rod and a pressure rod rotary drive mechanism that drives the movable pressure rod to shift relative to the material tray storage bin;

[0025] The movable pressure bar has a pressing state where it is driven by the pressure bar rotary drive mechanism to rotate and cooperate with the fixed limiting rod to press the material trays in the material tray storage bin; and a feeding state where it is driven by the pressure bar rotary drive mechanism to rotate and move away from the material tray storage bin to feed the material tray into the material tray storage bin by the conveyor belt body.

[0026] Optionally, it also includes a limiting post, which is fixed to the side of the conveyor belt housing away from the conveyor belt body;

[0027] The movable pressure bar includes:

[0028] A rotating plate, wherein the middle part of the rotating plate is provided with a waist hole for the movable insertion of the limiting post;

[0029] A movable pressure rod, which is fixed at one end of the rotating plate;

[0030] The pressure bar direct drive mechanism is mounted and fixed on the conveyor belt housing, and the drive end of the pressure bar direct drive mechanism is hinged to the other end of the rotating plate.

[0031] Optionally, the pressure rod rotary drive mechanism is a rotary cylinder or servo motor mounted on the conveyor belt housing and arranged vertically.

[0032] Optionally, the lifting mechanism includes a lifting plate and a lifting direct drive mechanism that drives the lifting plate to move up and down.

[0033] The beneficial effects of this utility model are as follows: It provides a material tray supply and storage device, the working process of which is as follows:

[0034] I. Tray Storage Stage:

[0035] S101: The lifting mechanism is in a high-position lifting state;

[0036] S102: The linkage drive assembly drives each of the rotating claws to rotate away from the material tray storage compartment to maintain the open state, so as to avoid interfering with the subsequent material tray placement operation;

[0037] S103: External feeding equipment (such as feeding robot) places the material trays layer by layer onto the lifting mechanism in the material tray storage bin. Correspondingly, the lifting mechanism gradually descends as the material tray stacking height increases to complete the material tray stacking and storage operation.

[0038] II. Material Supply Stage

[0039] S201: When picking up materials, the lifting mechanism rises and lifts up all the stacked trays as a whole;

[0040] S202: When the top tray reaches the picking position (the side of the top tray is aligned with the rotating claw):

[0041] a) The linkage drive assembly drives each of the rotating claws to rotate synchronously toward the top plate until it clamps and fixes the side position of the top plate, preventing the top plate from shifting up or down subsequently.

[0042] b) The lifting mechanism descends independently, causing all the material trays at the second-to-top level and below to move downwards, thereby creating a separation gap between the second-to-top material tray and the top material tray;

[0043] c) External material handling equipment (such as a material handling robot) grabs the top or side of the top tray that is individually fixed by rotating claws;

[0044] d) The linkage drive assembly drives each of the rotating claws to rotate away from the material tray storage compartment to maintain the open state, so as to release the top material tray;

[0045] e) The top tray can be removed by an external material handling device;

[0046] f) After the top tray is removed, the lifting mechanism rises and lifts the remaining tray to the new material removal position. The original second-to-top tray becomes the top tray. Repeat steps a to e above to remove the new top tray again. Repeat this process until the bottom tray is removed.

[0047] In the above process, the material tray supply and storage device provided by this utility model realizes the separate fixing and separate supply of the top material tray through the coordinated action of the linkage drive assembly, the rotating claw and the lifting mechanism, thereby solving the problem in the prior art that the top material tray and the second-to-top material tray can only be raised and lowered synchronously and cannot supply the top material tray separately. Attached Figure Description

[0048] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0049] Figure 1 A front structural schematic diagram of the material tray supply and storage device provided in the embodiment;

[0050] Figure 2 A schematic diagram of the linkage drive assembly provided in the embodiment;

[0051] Figure 3 This is a schematic diagram of the bottom structure of the material tray supply and storage device provided in the embodiment.

[0052] In the picture:

[0053] 100. Top layer tray;

[0054] 1. Silo uprights;

[0055] 2. Rotate the claw plate;

[0056] 3. Linkage drive assembly; 301. Rotary shaft crossbar; 302. Linkage assembly; 3021. First link; 3022. Second link; 303. Linkage direct drive mechanism;

[0057] 4. Lifting mechanism; 401. Lifting plate; 402. Lifting direct drive mechanism.

[0058] 5. Conveyor belt outer shell; 6. Conveyor belt body;

[0059] 7. Fix the limit rod;

[0060] 8. Movable pressure bar;

[0061] 9. Pressure rod rotary drive mechanism; 901. Limiting post; 902. Rotating plate; 903. Pressure rod direct drive mechanism. Detailed Implementation

[0062] In this utility model, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment can be included in at least one embodiment of this utility model. The term "embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment, nor does it specifically limit its independence or connection with other embodiments. In principle, in this utility model, as long as there are no technical contradictions or conflicts, the technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.

[0063] Unless otherwise defined, the technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the use of related terms herein is merely for the purpose of describing particular embodiments and is not intended to limit the invention.

[0064] In the description of this utility model, the term "and / or" is used to describe the logical relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A exists, B exists, and A and B exist simultaneously. Additionally, the character " / " generally indicates that the preceding and following objects have an "or" logical relationship.

[0065] In this invention, terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any actual quantity, hierarchy, or order between these entities or operations.

[0066] Without further limitations, the use of terms such as “comprising,” “including,” “having,” or other similar expressions in this invention is intended to cover non-exclusive inclusion, which does not exclude the presence of additional elements in a process, method, or product that includes the stated elements, such that a process, method, or product that includes a series of elements may include not only those defined elements but also other elements not expressly listed, or elements inherent to such a process, method, or product.

[0067] Similar to the understanding in the Examination Guidelines, in this utility model, expressions such as "greater than," "less than," and "exceeding" are understood to exclude the stated number; expressions such as "above," "below," and "within" are understood to include the stated number. Furthermore, in the description of the embodiments of this utility model, "multiple" means two or more (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups" and "multiple times," unless otherwise explicitly specified.

[0068] In the description of the embodiments of this utility model, the space-related expressions used, such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "vertical," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," indicate the orientation or positional relationship based on the orientation or positional relationship shown in the specific embodiments or drawings. They are only for the convenience of describing the specific embodiments of this utility model or for the reader's understanding, and do not indicate or imply that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model.

[0069] Unless otherwise expressly specified or limited, the terms "installation," "connection," "linking," "fixing," and "setting," as used in the description of the embodiments of this utility model, should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two components or the interaction between two components. For those skilled in the art to which this utility model pertains, the specific meaning of the above terms in the embodiments of this utility model can be understood according to the specific circumstances.

[0070] The direct drive mechanism in this invention can be a linear motor, a cylinder, a hydraulic cylinder, or a motor lead screw and slider assembly, etc.; the rotary drive mechanism can be a servo motor, a stepper motor, or a rotary cylinder, etc.

[0071] See Figures 1-3 This embodiment provides a material tray supply and storage device, including:

[0072] A number of silo columns 1 are arranged at intervals to form a silo storage bin for stacking multiple silos;

[0073] A plurality of rotating claw plates 2 are corresponding one-to-one with each of the aforementioned hopper columns 1, and the rotating claw plates 2 are rotatably mounted on the top of the corresponding hopper column 1;

[0074] A linkage drive assembly 3 is connected to each of the rotating claw plates 2, which is used to drive each of the rotating claw plates 2 to rotate synchronously toward the material tray storage bin to clamp the top material tray from the side, and to drive each of the rotating claw plates 2 to rotate synchronously away from the material tray storage bin to release the top material tray.

[0075] A lifting mechanism 4 is located below the tray storage compartment and is used to lift or lower the stacked trays. For example, the lifting mechanism 4 includes a lifting plate 401 and a lifting direct drive mechanism 402 that drives the lifting plate 401 to move up and down.

[0076] The material tray supply and storage device provided by this utility model operates as follows:

[0077] I. Tray Storage Stage:

[0078] S101: Lifting mechanism 4 is in a high-position lifting state;

[0079] S102: The linkage drive assembly 3 drives each of the rotating claws 2 to rotate away from the material tray storage compartment to maintain the open state, so as to avoid interfering with the subsequent material tray placement operation;

[0080] S103: External feeding equipment (such as feeding robot) places the material trays layer by layer onto the lifting mechanism 4 in the material tray storage bin. Correspondingly, the lifting mechanism 4 gradually descends as the material tray stacking height increases to complete the material tray stacking and storage operation.

[0081] II. Material Supply Stage

[0082] S201: When picking up materials, the lifting mechanism 4 rises to lift up all the stacked material trays as a whole;

[0083] S202: When the top tray 100 reaches the picking position (the side of the top tray 100 is aligned with the rotating claw 2):

[0084] a) The linkage drive assembly 3 drives each of the rotating claws 2 to rotate synchronously toward the top plate 100 until it clamps and fixes the side position of the top plate 100, thus preventing the top plate 100 from shifting up and down subsequently.

[0085] b) The lifting mechanism 4 descends independently, causing all the material trays at the second-to-top level and below to move downwards, thereby creating a separation gap between the second-to-top material tray 100 and the top material tray 100.

[0086] c) An external material handling device (such as a material handling robot) grabs the top or side surface of the top material tray 100, which is individually fixed by the rotating claw 2;

[0087] d) The linkage drive assembly 3 drives each of the rotating claws 2 to rotate away from the material tray storage compartment until it remains open, so as to release the top material tray 100;

[0088] e) External material handling equipment can remove the top tray 100;

[0089] f) After the top tray 100 is removed, the lifting mechanism 4 rises and lifts the remaining tray to the new material removal position. The original second-to-top tray 100 becomes the top tray 100. Repeat steps a to e above to remove the new top tray 100 again. Repeat this process until the bottom tray is removed.

[0090] In the above process, the material tray supply and storage device provided by this utility model realizes the individual fixing and separate supply of the top material tray 100 through the coordinated action of the connecting rod drive assembly 3, the rotating claw 2 and the lifting mechanism 4, which solves the problem in the prior art that the top material tray 100 and the second top material tray 100 can only be lifted and lowered synchronously and cannot supply the top material tray 100 independently.

[0091] In this embodiment, the material tray supply and storage device also includes two spaced-apart conveyor belt housings 5, and two material bin columns 1 are fixed to the top of each of the conveyor belt housings 5.

[0092] The surfaces of the two conveyor belt housings 5 ​​that are close to each other are provided with conveyor belt bodies 6 for conveying the trays to the bottom of the tray storage bin or for laterally sending the trays out of the tray storage bin;

[0093] The lifting mechanism 4 is located between the two conveyor belt bodies 6.

[0094] Besides placing trays into the tray supply device from top to bottom, trays can also be placed horizontally into the tray supply device via a conveyor belt. Specifically, initially, the lifting mechanism 4 is in a lower position. The upstream equipment places several stacked trays onto the conveyor belt body 6. The conveyor belt body 6 directly transports the entire stack of trays horizontally above the lifting mechanism 4, and then the top tray 100 can be supplied according to the steps S201-S202 described above. Similarly, when multiple trays are stacked on the lifting mechanism 4, the lifting mechanism 4 can move downwards and place the bottom tray onto the conveyor belt body 6, and then the conveyor belt body 6 will send out the entire stack of recovered trays.

[0095] In this embodiment, the linkage drive assembly 3 includes:

[0096] Two rotating shaft crossbars 301 are provided in a one-to-one correspondence with the two conveyor belt housings 5. The rotating shaft crossbars 301 are rotatably mounted on the two hopper columns 1 on the corresponding conveyor belt housings 5 ​​and pass through the two corresponding rotating claw plates 2 (the rotating claw plates 2 are fixedly connected to the corresponding rotating shaft crossbars 301) so as to drive the rotating claw plates 2 that pass through to rotate relative to the corresponding hopper columns 1.

[0097] Two connecting rod assemblies 302 are provided in one-to-one correspondence with the two pivot crossbars 301, and one end of the connecting rod assembly 302 is fixedly connected to the corresponding pivot crossbar 301.

[0098] A direct-drive linkage 303 is fixedly disposed relative to the two conveyor belt housings 5, and the drive end of the direct-drive linkage 303 is hinged to the two linkage assemblies 302, so as to drive the two rotating shaft crossbars 301 to rotate in opposite directions relative to each other through the two linkage assemblies 302, thereby causing the rotating claws 2 on the two rotating shaft crossbars 301 to rotate synchronously toward the material tray storage bin or synchronously toward the material tray storage bin.

[0099] Furthermore, the linkage assembly 302 includes:

[0100] First connecting rod 3021, one end of the first connecting rod 3021 is fixedly connected to the corresponding rotating shaft crossbar 301;

[0101] The second link 3022 has one end hinged to the other end of the first link 3021, and the other end hinged to the link direct drive mechanism 303.

[0102] When the drive end of the direct drive mechanism 303 extends upward, the second link 3022 will drive the lower end of the first link 3021 to rotate upward, which in turn causes the upper end of the first link 3021 to drive the corresponding rotating shaft crossbar 301 to rotate outward, and the corresponding rotating claw 2 will rotate away from the material tray storage bin until the top layer material tray 100 is released.

[0103] Conversely, when the drive end of the direct drive mechanism 303 retracts downward, the second link 3022 will drive the lower end of the first link 3021 to rotate downward, thereby causing the upper end of the first link 3021 to drive the corresponding rotating shaft crossbar 301 to rotate inward, and the corresponding rotating claw 2 will rotate toward the material tray storage bin to clamp the top layer material tray 100.

[0104] In this embodiment, the linkage direct drive mechanism 303 is provided with a plurality of fixed limiting rods 7 fixedly disposed relative to the conveyor belt housing 5 on the side near the material tray storage bin, so as to restrict the material tray from continuing to be conveyed downstream with the conveyor belt body 6.

[0105] Accordingly, the end of the conveyor belt housing 5 away from the connecting rod direct drive mechanism 303 is provided with a movable pressure rod 8 and a pressure rod rotary drive mechanism 9 that drives the movable pressure rod 8 to shift relative to the material tray storage bin;

[0106] The movable pressure bar 8 is driven by the pressure bar rotary drive mechanism 9 to rotate to cooperate with the fixed limit bar 7 (facing the fixed limit bar 7) to press the material trays in the material tray storage bin into a pressing state (so that the entire stack of material trays is aligned vertically); and is also driven by the pressure bar rotary drive mechanism 9 to rotate to a feeding position away from the material tray storage bin, so that the conveyor belt body 6 can feed the material trays into the material tray storage bin.

[0107] As an optional lever rotary drive method, in this embodiment, the lever rotary drive mechanism 9 includes:

[0108] Limiting post 901, the limiting post 901 is fixed on the side of the conveyor belt outer shell 5 away from the conveyor belt body 6;

[0109] A rotating plate 902 is provided in the middle of which a waist hole is provided for the movable insertion of the limiting post 901, and the movable pressure rod 8 is fixed to one end of the rotating plate 902.

[0110] A pressure bar direct drive mechanism 903 is mounted and fixed on the conveyor belt housing 5, and the drive end of the pressure bar direct drive mechanism 903 is hinged to the other end of the rotating plate 902.

[0111] The drive end of the pressure bar direct drive mechanism 903 extends outward, and the movable pressure bar 8 rotates inward with the rotating plate 902 under the limiting action of the limiting post 901 until it reaches the pressing state of laterally pressing each of the material trays; the drive end of the pressure bar direct drive mechanism 903 retracts inward, and the movable pressure bar 8 rotates outward with the rotating plate 902 under the limiting action of the limiting post 901 until it reaches the outside of the conveyor belt housing 5, so as not to affect the conveyor belt body 6 from feeding the material trays into the material tray storage bin.

[0112] In some other embodiments, a relatively simple driving method for the movable pressure rod 8 can also be used. For example, the pressure rod rotary drive mechanism 9 is a rotary cylinder or servo motor mounted on the conveyor belt housing 5 and arranged vertically. The drive end of the rotary cylinder or servo motor directly drives the movable pressure rod 8 to reciprocate 90° around the vertical axis, thereby pressing or releasing the material tray.

[0113] Finally, it should be noted that although the above embodiments have been described in the text and drawings of this application, this should not limit the scope of patent protection of this application. Any technical solutions that are based on the essential concept of this application and utilize the content described in the text and drawings of this application, resulting in equivalent structural or procedural substitutions or modifications, as well as the direct or indirect application of the technical solutions of the above embodiments to other related technical fields, are all included within the scope of patent protection of this application.

Claims

1. A material tray supply and storage device, characterized in that, include: A number of silo columns (1) are arranged at intervals to form a silo storage bin for stacking multiple silos; A plurality of rotating claws (2) are corresponding one-to-one with each of the aforementioned silo columns (1), and the rotating claws (2) are rotatably mounted on the top of the corresponding silo column (1); Linkage drive assembly (3), the linkage drive assembly (3) is connected to each of the rotating claws (2), for driving each of the rotating claws (2) to rotate synchronously toward the tray storage bin to clamp the top tray from the side, and for driving each of the rotating claws (2) to rotate synchronously away from the tray storage bin to release the top tray; Lifting mechanism (4) is located below the material tray storage bin and is used to lift or lower each of the stacked material trays.

2. The material tray supply and storage device according to claim 1, characterized in that, It also includes two spaced-apart conveyor belt housings (5), with two hopper columns (1) fixed to the top of each conveyor belt housing (5). The surfaces of the two conveyor belt housings (5) that are close to each other are provided with conveyor belt bodies (6) for conveying the tray to the bottom of the tray storage bin or for sending the tray laterally out of the tray storage bin. The lifting mechanism (4) is located between the two conveyor belt bodies (6).

3. The material tray feeding and storage device according to claim 2, characterized in that, The linkage drive assembly (3) includes: Two rotating shaft crossbars (301) are provided in a one-to-one correspondence with the two conveyor belt shells (5). The rotating shaft crossbars (301) are rotatably mounted on the two hopper columns (1) on the corresponding conveyor belt shells (5) and pass through the two corresponding rotating claws (2) so as to drive the rotating claws (2) that pass through to rotate relative to the corresponding hopper columns (1). Two connecting rod assemblies (302) are provided in a one-to-one correspondence with the two pivot crossbars (301), and one end of the connecting rod assembly (302) is fixedly connected to the corresponding pivot crossbar (301); A direct-drive linkage mechanism (303) is fixedly disposed relative to the two conveyor belt housings (5), and the drive end of the direct-drive linkage mechanism (303) is hinged to the two linkage assemblies (302) so as to drive the two rotating shaft crossbars (301) to rotate in opposite directions relative to each other through the two linkage assemblies (302), thereby causing the rotating claws (2) on the two rotating shaft crossbars (301) to rotate synchronously toward the material tray storage bin or synchronously toward the material tray storage bin.

4. The material tray feeding and storage device according to claim 3, characterized in that, The link assembly (302) includes: The first connecting rod (3021) has one end fixedly connected to the corresponding rotating shaft crossbar (301); The second link (3022) has one end hinged to the other end of the first link (3021) and the other end hinged to the link direct drive mechanism (303).

5. The material tray feeding and storage device according to claim 3, characterized in that, The linkage direct drive mechanism (303) has several fixed limiting rods (7) fixedly arranged relative to the conveyor belt housing (5) on the side near the material tray storage bin, so as to restrict the material tray from continuing to be conveyed downstream with the conveyor belt body (6).

6. The material tray supply and storage device according to claim 5, characterized in that, The conveyor belt housing (5) is provided with a movable pressure rod (8) at one end away from the connecting rod direct drive mechanism (303), and a pressure rod rotary drive mechanism (9) that drives the movable pressure rod (8) to move relative to the material tray storage bin. The movable pressure bar (8) is driven by the pressure bar rotary drive mechanism (9) to rotate to cooperate with the fixed limit bar (7) to press the material trays in the material tray storage bin; and is driven by the pressure bar rotary drive mechanism (9) to rotate to the feeding position away from the material tray storage bin so that the conveyor belt body (6) can feed the material trays into the material tray storage bin.

7. The material tray feeding and storage device according to claim 6, characterized in that, The lever rotary drive mechanism (9) includes: A limiting post (901) is fixed to the side of the conveyor belt housing (5) away from the conveyor belt body (6); A rotating plate (902) is provided in the middle of which a waist hole is provided for the movable insertion of the limiting post (901), and the movable pressure rod (8) is fixed to one end of the rotating plate (902); A pressure bar direct drive mechanism (903) is installed and fixed on the conveyor belt housing (5), and the drive end of the pressure bar direct drive mechanism (903) is hinged to the other end of the rotating plate (902).

8. The material tray supply and storage device according to claim 6, characterized in that, The pressure rod rotary drive mechanism (9) is a rotary cylinder or servo motor that is installed on the conveyor belt housing (5) and is vertically arranged.

9. The material tray feeding and storage device according to claim 6, characterized in that, The lifting mechanism (4) includes a lifting plate (401) and a lifting direct drive mechanism (402) that drives the lifting plate (401) to move up and down.

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