Multi-layer tray feeding device for storage and transmission

Abstract

The invention provides a multi-layer tray feeding device for storage and transmission, which comprises a main body, and a stock bin mechanism, a push-out mechanism, a conveying guide rail mechanism, a Z-direction driving mechanism, a Y-direction driving mechanism, a display assembly, a button assembly and a manual tray changing assembly which are arranged above the main body, and the manual tray changing assembly is used for taking and placing trays; the pushing-out mechanism is installed above the stock bin mechanism and used for pushing the trays out to the conveying guide rail mechanism, driving force of the conveying guide rail mechanism is driven by the Y-direction driving mechanism, the conveying guide rail mechanism is further provided with a pushing-in mechanism used for assisting the trays to return to the stock bin mechanism, and the Z-direction driving mechanism is used for driving the stock bin mechanism to move up and down. The button assembly is used for controlling the Z-direction driving mechanism to move up and down, and the display assembly is used for displaying the number and state of the trays. According to the multi-layer tray feeding device for storage and transmission, the problem that an automatic tray of a current sorting machine can only store a single type of chips is solved, and the working efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of mechanical conveying of sorting machines, and in particular relates to a multi-layer tray feeding device for storage and transmission. Background Art

[0002] The current sorting machine's automated trays can only store a single type of chip because the tray storage mechanism stacks the trays up and down. As a result, when faced with multiple bin chips, sorting can only be repeated multiple times to meet the requirements, which greatly affects production efficiency. Summary of the invention

[0003] In view of this, the present invention aims to propose a multi-layer tray feeding device for storage and transmission, so as to solve the problem that the current automatic tray of the sorting machine can only store a single type of chip, resulting in low working efficiency when facing multiple bin chips.

[0004] To achieve the above object, the technical solution of the present invention is achieved as follows: A multi-layer material tray feeding device for storing and transmitting, comprising a main body and a material bin mechanism, a push-out mechanism, a conveying guide rail mechanism, a Z-direction driving mechanism, a Y-direction driving mechanism, a display assembly, a button assembly and a manual tray changing assembly installed above the main body, the manual tray changing assembly being used for taking and placing material trays; the material bin mechanism is used for storing material trays, a push-out mechanism is installed above the material bin mechanism, the push-out mechanism is used for pushing the material trays to the conveying guide rail mechanism, the driving force of the conveying guide rail mechanism is driven by the Y-direction driving mechanism, the conveying guide rail mechanism is also provided with a pushing mechanism for assisting the material tray to return to the material bin mechanism, the Z-direction driving mechanism is used for driving the material bin mechanism to move up and down, the button assembly is used for controlling the up and down movement of the Z-direction driving mechanism, and the display assembly is used for displaying the number and status of the material trays.

[0005] Furthermore, the multi-layer tray feeding device for storage and transportation also includes a guide mechanism for maintaining the horizontal direction of the internal trays.

[0006] Furthermore, the multi-layer material tray feeding device for storage and transportation also includes a pressure plate mechanism, which is installed on one side of the conveying guide rail mechanism and is used to press the material tray.

[0007] Furthermore, the silo mechanism includes a frame structure composed of a left baffle, an upper baffle, a right baffle and a lower baffle connected in sequence, the frame is used to store material trays, and a plurality of support plates for placing material trays are provided on the inner walls of the left baffle and the right baffle. A slot is provided above each support plate, and a sensor is provided on the main body for detecting whether there is a material tray in the slot.

[0008] Furthermore, the main body includes a base plate and a driving wheel and a support seat installed above the base plate. The driving wheel is driven by a Z-direction driving mechanism, and the transmission unit drives the support seat to move up and down. The support seat is located below the silo mechanism and is slidably connected to the guide rail. When the Z-direction driving mechanism outputs power, it drives the support seat to move up and down, thereby driving the silo mechanism to move up and down.

[0009] Furthermore, the ejection mechanism includes a base, which is installed on the main body, and a ejection cylinder and a rocker arm are fixedly installed above the base. A push rod is fixedly installed on the movable end of the ejection cylinder, a push rod extension rod is fixedly installed on the end of the push rod, and the middle part is hinged to the rocker arm, so that when the ejection cylinder is actuated, the push rod, the push rod extension rod, and the rocker arm are driven to move together, and the original linear motion is converted into circular motion in the vertical direction.

[0010] Furthermore, the conveying guide rail mechanism includes a conveying base plate and a conveying driving wheel arranged above the conveying base plate, a pair of rails are symmetrically installed on both sides of the conveying base plate, a conveying unit is installed on the outer side of one of the rails, and the conveying unit is driven by a Y-axis driving mechanism; a pushing mechanism is also installed above the conveying base plate, and the top of the guide rail is used to place a material tray, and the material tray is located above the pushing mechanism.

[0011] Furthermore, the Y-axis driving mechanism includes a motor and a synchronous belt, the motor is installed below the conveying base plate, the conveying unit includes a conveying driving wheel, a flat belt and a follower wheel, and the conveying driving wheel and the follower wheel form a conveying structure through the flat belt; the conveying driving wheel is also connected to the driving end of the motor through a synchronous belt, and the motor transmits power to the top of the conveying driving wheel through the synchronous belt, thereby driving the flat belt and the follower wheel to move, so that the conveying guide rail mechanism can convey the material tray in the forward and backward directions.

[0012] Furthermore, the pushing mechanism includes a pushing cylinder and a pushing push rod. The pushing cylinder is located above the conveying substrate. The movable end of the pushing cylinder is rotatably connected to the pushing push rod and a spring is provided between the two. A baffle is installed between the pushing cylinder and the movable end of the cylinder. The movable end of the pushing cylinder is also equipped with an adjustment rod for adjusting the opening and closing angle of the pushing push rod, and the adjustment rod is located below the pushing push rod.

[0013] Furthermore, the pressure plate mechanism includes a support and an adjusting plate. The support is fixedly connected to the conveying base plate and one side is detachably connected to the adjusting plate. An adjusting screw for adjusting the height of the adjusting plate is provided above the adjusting plate. A spring fixing seat, an adapter plate and a pressure plate follower wheel are sequentially installed below the adjusting plate. The pressure plate follower wheel contacts the top of the material tray. A pressure plate spring is provided inside the spring fixing seat. The adjusting plate and the adapter plate are connected by a pressure plate spring, and the pressure plate spring is a compression spring.

[0014] Compared with the prior art, the multi-layer tray feeding device for storage and transmission described in the present invention has the following advantages: (1) The multi-layer tray feeding device for storage and transmission described in the present invention solves the problem that the current automatic tray of the sorting machine can only store a single type of chips, thereby improving work efficiency.

[0015] (2) The multi-layer tray feeding device for storage and transmission described in the present invention can store more than 14 types of bin chips by classification with a single mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings: Figure 1 Schematic diagram of a multi-layer tray feeding device according to an embodiment of the present invention Figure 1 ; Figure 2 Schematic diagram of a multi-layer tray feeding device according to an embodiment of the present invention Figure 2 ; Figure 3 It is a schematic diagram of a silo mechanism according to an embodiment of the present invention; Figure 4 A schematic diagram of a main body according to an embodiment of the present invention; Figure 5 Schematic diagram of the ejection mechanism according to the embodiment of the present invention Figure 1 ; Figure 6 Schematic diagram of the ejection mechanism according to the embodiment of the present invention Figure 2 ; Figure 7 A schematic diagram of a conveying guide rail mechanism according to an embodiment of the present invention; Figure 8 Schematic diagram of the push-in mechanism according to an embodiment of the present invention Figure 1 ; Figure 9 Schematic diagram of the push-in mechanism according to an embodiment of the present invention Figure 2 ; Figure 10 It is a schematic diagram of the pressure plate mechanism described in an embodiment of the present invention.

[0017] Description of reference numerals: 1-bin mechanism; 11-left baffle; 111-notch; 112-support plate; 12-sliding unit; 13-upper baffle; 14-handle; 15-right baffle; 16-lower baffle; 2-main body; 21-driving wheel; 22-tensioning wheel; 23-driven wheel; 24-support seat; 25-belt; 26-guide rail; 27-base plate; 28-lifting arm; 3-push mechanism; 31-push rod extension rod; 32-push rod; 33-push rod connecting block; 34-push cylinder; 35-swing rod; 36-base; 4-guide mechanism; 41-guide rod No. 1; 42-guide rod No. 2; 5-conveying guide Rail mechanism; 51-transport driving wheel; 52-flat belt; 53-follower wheel; 54-right track; 55-left track; 56-connecting rod; 57-transport substrate; 6-pushing mechanism; 61-pushing cylinder; 62-pushing push rod; 63-fixed seat; 64-baffle; 65-adjusting rod; 7-Z-direction driving mechanism; 8-Y-direction driving mechanism; 9-pressure plate mechanism; 91-support; 92-adjusting plate; 93-spring fixing seat; 94-adapter plate; 95-pressure plate follower wheel; 96-adjusting screw; 10-display assembly; 11-button assembly; 12-manual tray changing assembly; A-material tray. DETAILED DESCRIPTION

[0018] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0019] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0020] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0021] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0022] Glossary: Bin chip: refers to chips that are classified into different levels according to performance parameters, functional characteristics and other indicators during the semiconductor packaging and testing process.

[0023] A multi-layer tray feeding device for storing and transporting, such as Figures 1 to 10 As shown, it includes a main body 2 and a silo mechanism 1, a push-out mechanism 3, a conveying rail mechanism 5, a push-in mechanism 6, a Z-direction drive mechanism 7, a Y-direction drive mechanism 8, a display assembly 10, a button assembly 11 and a manual tray-changing assembly 12 installed on the upper part thereof. The manual tray-changing assembly 12 is used to take and place the tray. The silo mechanism 1 is used to store the tray. The push-out mechanism 3 is installed on the upper part of the silo mechanism 1. The push-out mechanism 3 is used to push the tray to the conveying rail mechanism 5. The driving force of the conveying rail mechanism 5 is driven by the Y-direction drive mechanism 8. The conveying rail mechanism 5 is also provided with a push-in mechanism 6 for assisting the tray to return to the silo mechanism 1. The Z-direction drive mechanism 7 is used to drive the silo mechanism 1 to move up and down, so as to facilitate the ejection of the tray. The button assembly 11 is used to control the up and down movement of the Z-direction drive mechanism 7. The button assembly 11 signal is connected to the switch of the Z-direction drive mechanism 7, so as to control the up and down movement of the Z-direction drive mechanism 7, thereby driving the silo mechanism 1 to move up and down. The display assembly 10 is used to display the number of empty trays and trays with materials.

[0024] The display assembly 10 includes a display screen and a controller, the controller is a PLC, and a plurality of sensors are arranged on the main body 2. The sensors detect the number of empty trays and trays with materials and transmit the numbers to the controller, which displays the numbers through the display screen. This process is prior art and will not be described in detail here.

[0025] A multi-layer tray feeding device for storage and transportation also includes a guide mechanism 4 for maintaining the horizontal direction of the internal trays.

[0026] A multi-layer tray feeding device for storage and transportation also includes a pressure plate mechanism 9, which is installed on one side of the conveying guide rail mechanism 5 and is used to press the tray to ensure that the tray runs smoothly on the conveying guide rail mechanism 5.

[0027] The silo mechanism 1 includes a frame structure composed of a left baffle 11, an upper baffle 13, a right baffle 15 and a lower baffle 16 connected in sequence. The frame is used to store a material tray A. The inner walls of the left baffle 11 and the right baffle 15 are provided with a plurality of support plates 112 for placing the material tray. In order to facilitate loading, inclined surfaces are provided at both ends of the support plates 112. A notch 111 is provided above each support plate. A sensor for detecting whether there is a material tray in the notch 111 is provided on the main body 2. The function of the notch 111 is to identify whether there is a material tray in the current magazine layer. In one or more embodiments, sliding units 12 are provided at the four corners of the upper baffle 11 and the lower baffle 16. The sliding units 12 cooperate with the guide units to play a guiding role. Preferably, the sliding units 12 are two mutually perpendicular pulleys. A handle 14 is also installed on the upper baffle 13. The presence of the handle 14 facilitates manual movement of the silo and maintenance.

[0028] The main body 2 includes a base plate 27 and a driving wheel 21, a tensioning wheel 22, a driven wheel 23, a support seat 24, a belt 25, a guide rail 26 and a lifting arm 28 installed above the base plate 27. The driving wheel 21 is driven by the Z-direction driving mechanism 7 and drives the driven wheel 23 to rotate through the belt 25. The belt 25 can also drive the tensioning wheel 22 to rotate and drive the support seat 24 to move up and down. The support seat 24 is located below the silo mechanism 1 and is slidably connected to the guide rail 26. When the Z-direction driving mechanism 7 outputs power, it drives the support seat 24 to move up and down, thereby driving the silo mechanism 1 to move up and down. Preferably, there are two guide rails 26 and they are symmetrically arranged. The lower parts of the two guide rails 26 are connected by a lifting arm 28, and the lifting arm 28 is used to maintain the stability of the two ends of the guide rails 26. A guide mechanism 4 is also installed above the main body 2. When the silo moves up and down, the guide mechanism 4 is used to maintain the horizontal direction of the internal material tray and increase the stability of the machine. Specifically, the guide mechanism 4 includes a No. 1 guide rod 41 and a No. 2 guide rod 42, both of which are installed on the base plate 27. The Z-direction driving mechanism 7 is a motor.

[0029] Figure 5 The ejection mechanism 3 is in the ejection cylinder extension state. Figure 6 The push mechanism 3 is in the extended state of the push cylinder. The push mechanism 3 includes a base 36 and a push rod extension rod 31, a push rod 32, a push rod connecting block 33, a push cylinder 34 and a swing rod 35 arranged above the base 35. The base 35 is installed on the main body 2. The push cylinder 34 and the swing rod 35 are fixedly installed above the base 35. The push rod 32 is fixedly installed at the movable end of the push cylinder 34. The push rod extension rod 31 is fixedly installed at the end of the push rod 32, and the middle part is hinged with the swing rod 35, so that when the push cylinder 34 moves, the push rod 32, the push rod extension rod 31, and the swing rod 35 are driven to move together. And the original linear motion is converted into a circular motion in the vertical direction. Preferably, the push cylinder 34 is fixedly connected to the push rod 32 through the push rod connecting block 33.

[0030] The conveying guide rail mechanism 5 is used to convey the material tray in the front and rear directions; the conveying guide rail mechanism 5 includes a conveying base plate 57 and a conveying driving wheel 51, a flat belt 52, a follower wheel 53, a right rail 54, a left rail 55, and a connecting rod 56 arranged above the conveying base plate 57. A pair of rails are symmetrically installed on both sides of the conveying base plate 57, and a conveying unit is installed on the outer side of one of the rails, and the conveying unit is driven by the Y-axis driving mechanism 8; a pushing mechanism 6 is also installed above the conveying base plate 57, and the top of the guide rail is used to place the material tray, and the material tray is located above the pushing mechanism 6. In one or more embodiments, the Y-axis driving mechanism 8 includes a motor 81 and a synchronous belt 82, the motor 81 is installed below the conveying base plate 57, the track includes a right track 54 and a left track 55, and the right track 54 and the left track 55 are also connected by a connecting rod 56; the conveying unit includes a conveying driving wheel 51, a flat belt 52 and a follower wheel 53, and the conveying driving wheel 51 forms a conveying structure with the follower wheel 53 through the flat belt 52; the conveying driving wheel 51 is also connected to the driving end of the motor 81 through the synchronous belt 82, and the motor 81 transmits power to the top of the conveying driving wheel 51 through the synchronous belt 82, thereby driving the flat belt 52 and the follower wheel 53 to move, so that the conveying guide mechanism can convey the material tray in the forward and backward directions.

[0031] The push mechanism 6 includes a push cylinder 61, a push rod 62, a fixed seat 63, a baffle 64, and an adjustment rod 65. The push cylinder 61 is located above the conveying substrate 57. The movable end of the push cylinder 61 is rotatably connected to the push rod 62 and a spring is provided between the two. The baffle 64 is installed between the push cylinder 61 and the movable end of the cylinder. The movable end of the push cylinder 61 is also installed with an adjustment rod 65 for adjusting the opening and closing angle of the push rod 62, and the adjustment rod 65 is located below the push rod 62. Preferably, the push cylinder 61 is fixedly connected to the conveying substrate 57 through the fixed seat 63.

[0032] When the material tray on the conveying guide mechanism 5 needs to be returned to the material bin of the material bin mechanism 1, the pushing mechanism 6 will extend as shown in FIG. Figure 9 , assisting the conveying guide mechanism 5 so that the material tray on the conveying guide mechanism 5 can complete the entry into the silo. When the push cylinder 61 is retracted, the upper surface of the push rod 62 is kept horizontal with the push cylinder 61, and will not interfere with the movement of the material tray on the conveying guide mechanism 5. When the push cylinder 61 is extended, the lower surface of the push rod 62 is kept horizontal with the push cylinder 61 under the action of the spring, so as to facilitate pushing the material tray from the conveying guide mechanism 5 into the silo of the silo mechanism 1. The adjustment rod 66 is used to adjust the opening and closing angle of the push rod.

[0033] The pressure plate mechanism 9 includes a support 91, an adjustment plate 92, a spring fixing seat 93, an adapter plate 94, a pressure plate follower wheel 95 and an adjustment screw 96. The support 91 is fixedly connected to the conveying base plate 57, and one side is detachably connected to the adjustment plate 92. An adjustment screw 96 for adjusting the height of the adjustment plate 92 is provided above the adjustment plate 92. A spring fixing seat 93, an adapter plate 94 and a pressure plate follower wheel 95 are sequentially installed below the adjustment plate 92. The pressure plate follower wheel 95 contacts the top of the material tray. A pressure plate spring is provided inside the spring fixing seat 93. The pressure plate spring is used to connect the adjustment plate 92 and the adapter plate 94. The pressure plate spring is a compression spring. When the material tray enters and exits the conveying guide rail mechanism 5, the pressure plate follower wheel 95 will directly contact the material tray. At this time, under the action of the pressure plate spring, a downward pressure will be applied to the pressure plate follower wheel 95, thereby increasing the friction of the material tray on the conveying guide rail mechanism 5. This allows the material tray to run smoothly on the conveying guide rail mechanism 5.

[0034] Application example: The chip is carried to the conveying guide rail mechanism 5 by the robot arm, and a material tray is placed on the conveying guide rail mechanism 5 to receive the placement of the chip. When the material tray is full or taken out, the material tray will be conveyed to the silo 1 by the belt 52, and a pressure plate mechanism 9 is provided on both sides of the conveying guide rail mechanism 5. When the front half of the material tray is mounted on the conveying guide rail, it will contact the lower edge of the pressure plate mechanism and be pressed by the floating pressure plate mechanism, so that the material tray can be close to the conveying belt, increase the friction between the material tray and the conveying belt, and make it easier for the conveying belt to convey the material tray. When the material tray enters the interior of the silo 1 and is in place, the silo 9 will move up and down under the drive of the structure 2. When it moves to the specified position, the push-out mechanism 3 will extend the push-out cylinder and push the material tray out of the silo 9. At the same time, the motor in the conveying guide rail mechanism 5 will reverse, and the material tray will be transported to the guide rail through the belt to facilitate the robot arm to carry out the next operation process.

[0035] The working principle of a multi-layer tray feeding device for storage and transmission is as follows: The silo mechanism 1 is located in the main body 2 and connected to the Z-direction drive mechanism 7. The controller controls the Z-direction drive mechanism 7 to work. When the tray in the silo mechanism 1 reaches the specified position, the controller controls the push-out cylinder 34 to work, and the push-out mechanism 3 pushes the tray from the silo mechanism 1 to the conveying guide mechanism 5. At this time, the pressure plate assembly 9 will assist the conveying guide mechanism 5. When the sorting machine completes the discharge action, the controller receives the signal of the sorting machine and drives the conveying guide mechanism 5 through the Y-direction drive mechanism 8 to return the tray to the silo mechanism 1. At the same time, the push-in cylinder 61 is controlled to work, so that the push-in mechanism 6 simultaneously assists in returning the tray to the silo mechanism 1. When the tray needs to be taken out, the button assembly 11 can be moved up and down to make the tray to be taken out reach the tray out position, prop up the manual tray changing assembly 12, take out the full tray, put in the empty tray, and then close the manual tray changing assembly 12. The Z-direction drive mechanism 7 and the Y-direction drive mechanism 8 set in the multi-layer tray feeding device for storage and transmission realize the precise control of vertical and horizontal longitudinal movement. Among them, the Z-direction drive mechanism 7 is responsible for driving the support seat 24 connected by the belt 25 to move up and down synchronously to ensure that the material box can be lifted and lowered smoothly; while the Y-direction drive mechanism 8 accurately controls the horizontal displacement of the material tray by connecting to the flat belt 52 on the conveying track. A display panel of the display component 10 is set on the front of the main body 2 to specifically display the current export bin information, and a button of the button component 11 is set next to the panel to control the up and down movement of the silo mechanism 1. The manual tray changing component 12 set under the panel can be raised when used to replace the full tray. The inner and outer sides of the mechanism are respectively equipped with a push-out cylinder 34 and a push-in cylinder 61, forming a complete set of automatic feeding and unloading system. When the push-out cylinder is started, its push rod will automatically extend to gently push the material tray located on the conveying track inside the machine into the material box; conversely, when the push-in cylinder is working, the push rod will accurately push the material tray in the material box back to the conveying guide rail to complete a material transfer process. A single mechanism can sort more than 14 types of bin chips.

[0036] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A multi-layer tray feeding device for storage and transmission, characterized in that: It includes a main body and a silo mechanism, a push-out mechanism, a conveying guide rail mechanism, a Z-axis driving mechanism, a Y-axis driving mechanism, a display component, a button component and a manual tray changing component installed above the main body. The manual tray changing component is used to take and place the trays. The silo mechanism is used to store the trays. A push-out mechanism is installed above the silo mechanism. The push-out mechanism is used to push the trays to the conveying guide rail mechanism. The driving force of the conveying guide rail mechanism is driven by the Y-axis driving mechanism. The conveying guide rail mechanism is also provided with a pushing mechanism for assisting the trays to return to the silo mechanism. The Z-axis driving mechanism is used to drive the silo mechanism to move up and down. The button component is used to control the up and down movement of the Z-axis driving mechanism. The display component is used to display the number and status of the trays.

2. A multi-layer tray feeding device for storage and transportation according to claim 1, characterized in that: Also included is a guide mechanism for maintaining the horizontal direction of the internal material tray.

3. A multi-layer tray feeding device for storage and transportation according to claim 1, characterized in that: It also includes a pressure plate mechanism, which is installed on one side of the conveying guide rail mechanism and is used to press the material tray.

4. A multi-layer tray feeding device for storage and transportation according to claim 1, characterized in that: The silo mechanism includes a frame structure composed of a left baffle, an upper baffle, a right baffle and a lower baffle connected in sequence. The frame is used to store material trays. Several support plates for placing material trays are provided on the inner walls of the left baffle and the right baffle. A slot is provided above each support plate, and a sensor is provided on the main body to detect whether there is a material tray in the slot.

5. A multi-layer tray feeding device for storage and transportation according to claim 3, characterized in that: The main body includes a base plate and a driving wheel and a support seat installed above it. The driving wheel is driven by the Z-axis driving mechanism, and the transmission unit drives the support seat to move up and down. The support seat is located below the silo mechanism and is slidably connected to the guide rail. When the Z-axis driving mechanism outputs power, it drives the support seat to move up and down, thereby driving the silo mechanism to move up and down.

6. A multi-layer tray feeding device for storage and transportation according to claim 1, characterized in that: The ejection mechanism includes a base, which is installed on the main body. A ejection cylinder and a rocker arm are fixedly installed above the base. A push rod is fixedly installed on the movable end of the ejection cylinder. A push rod extension rod is fixedly installed on the end of the push rod and is hinged to the rocker arm in the middle, so that when the ejection cylinder is actuated, the push rod, the push rod extension rod and the rocker arm are driven to move together, and the original linear motion is converted into a circular motion in a vertical direction.

7. A multi-layer tray feeding device for storage and transportation according to claim 5, characterized in that: The conveying guide rail mechanism includes a conveying base plate and a conveying driving wheel arranged above it. A pair of rails are symmetrically installed on both sides of the conveying base plate. A conveying unit is installed on the outer side of one of the rails, and the conveying unit is driven by a Y-axis driving mechanism. A pushing mechanism is also installed above the conveying base plate. The top of the guide rail is used to place a material tray, and the material tray is located above the pushing mechanism.

8. A multi-layer tray feeding device for storage and transportation according to claim 7, characterized in that: The Y-axis driving mechanism includes a motor and a synchronous belt. The motor is installed under the conveying base plate. The conveying unit includes a conveying driving wheel, a flat belt and a follower wheel. The conveying driving wheel and the follower wheel form a conveying structure through the flat belt. The conveying driving wheel is also connected to the driving end of the motor through a synchronous belt. The motor transmits power to the top of the conveying driving wheel through the synchronous belt, and then drives the flat belt and the follower wheel to move, so that the conveying guide mechanism can convey the material tray in the front and rear directions.

9. A multi-layer tray feeding device for storage and transportation according to claim 7, characterized in that: The pushing mechanism includes a pushing cylinder and a pushing push rod. The pushing cylinder is located above the conveying substrate. The movable end of the pushing cylinder is rotatably connected to the pushing push rod and a spring is provided between the two. A baffle is installed between the pushing cylinder and the movable end of the cylinder. An adjustment rod for adjusting the opening and closing angle of the pushing push rod is also installed at the movable end of the pushing cylinder, and the adjustment rod is located below the pushing push rod.

10. A multi-layer tray feeding device for storage and transportation according to claim 7, characterized in that: The pressure plate mechanism includes a support and an adjustment plate. The support is fixedly connected to the conveying base plate and one side is detachably connected to the adjustment plate. An adjustment screw for adjusting the height of the adjustment plate is provided above the adjustment plate. A spring fixing seat, an adapter plate and a pressure plate follower wheel are installed in sequence below the adjustment plate. The pressure plate follower wheel contacts the top of the material tray. A pressure plate spring is provided inside the spring fixing seat. The adjustment plate and the adapter plate are connected by a pressure plate spring, and the pressure plate spring is a compression spring.

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