Tray retracting and releasing mechanism

Abstract

The present invention discloses a tray storage and release mechanism, including a material bin, a first clamp, a second clamp, a first supporting device, a second supporting device, a first supporting hook and a second supporting hook. The material bin has a first tray area, a second tray area and a tray storage and release working chamber. The first supporting hook is suspended in the tray storage and release working chamber and is respectively located on the left and right sides of the first tray area, and the second supporting hook is suspended in the tray storage and release working chamber and is respectively located on the left and right sides of the second tray area; the first supporting device and the second supporting device each include a supporting drive and a supporting bracket; the supporting bracket of the first supporting device pushes the tray on the first supporting hook into the first tray area under the drive of the supporting drive of the first supporting device, or the supporting bracket of the second supporting device pushes the tray on the second supporting hook into the second tray area under the drive of the supporting drive of the second supporting device; so as to achieve the purpose of convenient and reliable storage and release of the trays, and the tray storage and release area can be flexibly selected.

Description

Technical Field

[0001] The invention relates to a retracting and releasing mechanism, in particular to a material tray retracting and releasing mechanism for placing and closing a material tray for accommodating a lens screw thread seat. Background Art

[0002] As we all know, electronic products such as smartphones, tablets, laptops and digital cameras cannot do without the use of cameras.

[0003] At present, for a camera, it includes a lens, a sensor, a screw seat and a cover plate, etc. Among them, for the screw seat, it is made by injection molding, so the screw seats taken out from the injection mold are randomly stacked in the recycling container of the injection molding machine. Since the screw seat needs to be assembled with other components later, it is necessary to sort and store the screw seats randomly stacked in the recycling container, that is, to store the screw seats one by one in the material slots on the material tray for stacking, so as to facilitate the subsequent assembly work of the assembly machinery.

[0004] Existing material trays are stacked in the material bin to achieve batch storage of material trays. In the material bin, due to the unreasonable structural design of the receiving and releasing device for receiving and releasing the material trays, it is troublesome to receive and store the material trays delivered by the external manipulator. At the same time, the process of transferring the material trays in the material bin to the external manipulator is also troublesome.

[0005] Therefore, there is an urgent need for a tray retracting and releasing mechanism to overcome the above-mentioned defects. Summary of the invention

[0006] The object of the present invention is to provide a material tray folding and placing mechanism, which makes the material tray folding and placing convenient and reliable, and the material tray folding and placing area can be flexibly selected.

[0007] To achieve the above-mentioned purpose, the present invention provides a tray retrieval mechanism, including a silo, a first clamp, a second clamp, a first supporting device, a second supporting device, a first supporting hook and a second supporting hook. The silo has a first tray area, a second tray area and a tray retrieval working chamber, the first tray area and the second tray area are arranged side by side at intervals in the left and right directions of the silo, the tray retrieval working chamber is located directly below the first tray area and the second tray area, and the tray retrieval working chamber is also connected to the first tray area and the second tray area in the upper and lower directions of the silo respectively; the first clamp and the second clamp are each installed on the silo, the first clamp is used to clamp the tray in the first tray area, and the second clamp is used to clamp the tray in the second tray area; the first supporting hook is suspended in the tray retrieval working chamber and is respectively located on the left and right sides of the first tray area, the second supporting hook is suspended in the tray retrieval working chamber and is respectively located on the left and right sides of the second tray area on the left and right sides; the first supporting device and the second supporting device each comprise a supporting drive installed on the silo with the output end arranged upward and a supporting bracket installed at the output end of the supporting drive, the supporting bracket of the first supporting device being located directly below the first material tray area, and the supporting bracket of the second supporting device being located directly below the second material tray area; wherein, the supporting bracket of the first supporting device, driven by the supporting drive of the first supporting device, will push the material tray loaded on the first supporting hook from the front-to-back direction of the silo upward into the first material tray area; or, the supporting bracket of the second supporting device, driven by the supporting drive of the second supporting device, will push the material tray loaded on the second supporting hook from the front-to-back direction of the silo upward into the second material tray area.

[0008] Preferably, the hook portions between the first supporting hooks are aligned with each other, and the hook portions between the second supporting hooks are aligned with each other.

[0009] Preferably, the size of the supporting bracket of the first supporting device in the left-right direction of the silo is smaller than the distance between the first supporting hooks, and the size of the supporting bracket of the second supporting device in the left-right direction of the silo is smaller than the distance between the second supporting hooks.

[0010] Preferably, the jacking drive is a motor, the output shaft of the motor is a hollow structure, a nut structure is processed on the inner wall of the hollow structure, a screw rod is inserted into the nut structure from the upper and lower directions of the silo, the upper end of the screw rod is rotatably assembled and connected to the jacking bracket, and the lower end of the screw rod extends downward from the motor.

[0011] Preferably, the silo includes a frame and upper and lower partitions located in the middle of the frame, the upper and lower partitions separate the interior of the frame into the tray storage working chamber and the movable chamber located below the tray storage working chamber, the top support bracket is located in the movable chamber, the top support drive is assembled at the bottom of the frame, the first tray area and the second tray area are located at the top surface of the frame, and the first clamp and the second clamp are installed on the top surface of the frame.

[0012] Preferably, the first clamp and the second clamp each include a clamping cylinder and a pressing block, the clamping cylinder of the first clamp is respectively located on the front and rear sides of the first material tray area, the output ends of the clamping cylinders of the first clamp face each other, and the pressing block of the first clamp is installed at the output end of the clamping cylinder of the first clamp, the clamping cylinders of the second clamp are respectively located on the front and rear sides of the second material tray area, the output ends of the clamping cylinders of the second clamp face each other, and the pressing block of the second clamp is installed at the output end of the clamping cylinder of the second clamp.

[0013] Preferably, the material bin also includes left and right partitions and front and rear partitions installed on the top surface of the frame, the left and right partitions are located beside the rear sides of the first material tray area and the second material tray area, the front and rear partitions are located between the first material tray area and the second material tray area, and the front and rear partitions are also connected to the middle of the left and right partitions.

[0014] Preferably, the left and right partitions and the front and rear partitions together form a T-shaped structure.

[0015] Preferably, the first supporting device and the second supporting device further each include a lifting guide rod, the upper end of the lifting guide rod is mounted on the upper and lower partitions, and the lower end of the lifting guide rod passes downward through the supporting bracket and is mounted on the bottom of the frame.

[0016] Preferably, the tray retrieval working chamber passes through the silo in the front-to-rear direction of the silo, the supporting bracket of the first supporting device is spaced apart from the first supporting hook in the upper and lower directions of the silo when in the initial position, and the supporting bracket of the second supporting device is spaced apart from the second supporting hook in the upper and lower directions of the silo when in the initial position.

[0017] Compared with the prior art, since the material tray retrieval and release mechanism of the present invention also includes a first supporting device, a second supporting device, a first supporting hook and a second supporting hook, the first supporting hook is suspended in the material tray retrieval and release working chamber and is respectively located on the left and right sides of the first material tray area, the second supporting hook is suspended in the material tray retrieval and release working chamber and is respectively located on the left and right sides of the second material tray area, the first supporting device and the second supporting device each include a supporting drive installed on the silo with the output end arranged upward and a supporting bracket installed at the output end of the supporting drive, the supporting bracket of the first supporting device is located directly below the first material tray area, and the supporting bracket of the second supporting device is located directly below the second material tray area. Therefore, during the process of folding and releasing the material tray, when the external manipulator moves from the back to the front of the material bin together with the material tray it supports into the space enclosed by the first supporting hooks, the external manipulator at this time slides downward out of the first supporting hook and enters the material tray folding and releasing working chamber, so that the material tray supported by the external manipulator is supported by the first supporting hook; then, the external manipulator moves in the material tray folding and releasing working chamber to just below the space enclosed by the second supporting hooks; then, the external manipulator moves upward again until it is in contact with the lowest material tray in the second material tray area. At this time, the second clamp releases its clamping of the material trays in the second material tray area, so that the lowest material tray in the second material tray area falls off. The first support hook is supported by the external robot, and the other material trays in the second material tray area are clamped again by the second clamp; finally, the external robot moves the supported material tray out of the material bin from the front to the back; and the material tray supported on the first supporting hook transported by the external robot is driven by the supporting driver of the first supporting device, and the supporting bracket of the first supporting device upwardly loads the material tray on the first supporting hook into the first material tray area; and in the process of loading the material tray into the first material tray area, the first clamp needs to first release the clamping of the material tray in the first material tray area, and when the material tray on the first supporting hook is loaded into the first material tray area, the first clamp at this time re-clamps the material tray in the first material tray area.Similarly, when the external manipulator moves from the back to the front of the material bin together with the material tray it supports into the space enclosed by the second supporting hooks, the external manipulator at this time slides downward out of the second supporting hook and enters the material tray storage and release working chamber, so that the material tray supported by the external manipulator is supported by the second supporting hook; then, the external manipulator moves in the material tray storage and release working chamber to just below the space enclosed by the first supporting hooks; then, the external manipulator moves upward again until it is in contact with the lowest material tray in the first material tray area. At this time, the second clamp releases its clamping of the material tray in the first material tray area, so that the lowest material tray in the first material tray area falls to the external manipulator. The first material tray area is supported by the manipulator, and the other material trays in the first material tray area are clamped again by the first clamp; finally, the external manipulator moves the supported material tray out of the material bin from the front to the back; and the material tray supported on the second supporting hook delivered by the external manipulator is driven by the supporting driver of the second supporting device, and the supporting bracket of the second supporting device upwardly loads the material tray on the second supporting hook into the second material tray area; and in the process of loading the material tray into the second material tray area, the second clamp needs to first release the clamping of the material tray in the second material tray area, and when the material tray on the second supporting hook is loaded into the second material tray area, the second clamp at this time re-clamps the material tray in the second material tray area. Therefore, the material tray storage and release mechanism of the present invention has the advantages of very convenient and reliable material tray storage operation. At the same time, through the arrangement of the first supporting device and the second supporting device, the storage and release position of the material tray can be flexibly selected according to actual needs, that is, the first material tray area can be a material tray folding area, and the second material tray area can be a material tray unloading area, and vice versa. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the material tray folding and placing mechanism of the present invention when the first material tray area and the second material tray area each accommodate a material tray.

[0019] Figure 2 yes Figure 1 The material tray folding and releasing mechanism shown is a three-dimensional structural schematic diagram when the material tray is separated from the first material tray area and the second material tray area respectively.

[0020] Figure 3 yes Figure 2 A schematic diagram of the three-dimensional structure from another angle is shown. DETAILED DESCRIPTION

[0021] In order to explain the technical content and structural features of the present invention in detail, further description will be given below in combination with the implementation modes and the accompanying drawings.

[0022] See also Figures 1 to 3The tray storage mechanism 100 of the present invention comprises a silo 10, a first clamp 20, a second clamp 30, a first supporting device 40, a second supporting device 50, a first supporting hook 60 and a second supporting hook 70. The silo 10 has a first tray area 11, a second tray area 12 and a tray storage working chamber 13; the first tray area 11 and the second tray area 12 are arranged side by side in a spaced relationship in the left and right direction of the silo 10 (i.e., as indicated by arrow A) to ensure that the trays 200 in the first tray area 11 and the trays 200 in the second tray area 12 do not interfere with each other; the tray storage working chamber 13 is located directly below the first tray area 11 and the second tray area 12, and the tray storage working chamber 13 is also located in the upper and lower directions of the silo 10 (i.e., as indicated by arrow C) They are connected to the first material tray area 11 and the second material tray area 12 respectively, so as to create conditions for the lifting bracket 42 described below to move upward into the first material tray area 11 and the lifting bracket 52 to move upward into the second material tray area 12. Preferably, the material tray storage and release working chamber 13 passes through the material bin 10 in the front-to-back direction of the material bin 10, so as to facilitate an external manipulator to move the supported material tray 200 from the back to the front of the material bin 10 into the material bin 10, or to move the material tray 200 out of the material bin 10 from the front to the back of the material bin 10, but not limited to this. The first clamp 20 and the second clamp 30 are respectively installed on the material bin 10, and the material bin 10 provides support and fixing for the first clamp 20 and the second clamp 30; the first clamp 20 is used to clamp the material tray 200 in the first material tray area 11, and the second clamp 30 is used to clamp the material tray 200 in the second material tray area 12. The first supporting hook 60 is suspended in the tray storage working chamber 13 and is respectively located on the left and right sides of the first tray area 11, and the second supporting hook 70 is suspended in the tray storage working chamber 13 and is respectively located on the left and right sides of the second tray area 12. The first supporting device 40 and the second supporting device 50 each include a supporting driver 41 (51) installed on the silo 10 and arranged with the output end facing upward, and a supporting bracket 42 (52) installed at the output end of the supporting driver 41 (51); the supporting bracket 42 of the first supporting device 40 is located directly below the first tray area 11, and the supporting bracket 52 of the second supporting device 50 is located directly below the second tray area 12. Wherein, the supporting bracket 42 of the first supporting device 40 will push the material tray 200 loaded on the first supporting hook 60 from the front-to-back direction of the silo 10 upward into the first material tray area 11 under the driving of the supporting driver 41 of the first supporting device 40; or, the supporting bracket 52 of the second supporting device 50 will push the material tray 200 loaded on the second supporting hook 70 from the front-to-back direction of the silo 10 upward into the second material tray area 12 under the driving of the supporting driver 51 of the second supporting device 50, that is, when the first material tray area 11 is selected as the material tray storage area, the second material tray area 12 at this time can only be the material tray unloading area, and vice versa. More specifically, as follows:

[0023] like Figure 3As shown, the hook portions 61 between the first supporting hooks 60 are aligned with each other, which makes it easier for an external robot to move upward into the space enclosed by the first supporting hooks 60 and lift up the material tray 200 at the first supporting hooks 60, or to transfer the material tray 200 downward to the hook portions 61 of the first supporting hooks 60; the hook portions 71 between the second supporting hooks 70 are aligned with each other, which makes it easier for an external robot to move upward into the space enclosed by the second supporting hooks 70 and lift up the material tray 200 at the second supporting hooks 70, or to transfer the material tray 200 downward to the hook portions 71 of the second supporting hooks 70. Specifically, the size of the supporting bracket 42 of the first supporting device 40 in the left-right direction of the silo 10 is smaller than the spacing between the first supporting hooks 60, so as to ensure that the supporting bracket 42 can move upward into the space enclosed by the first supporting hooks 60 or move out of the space enclosed by the first supporting hooks 60 smoothly; the size of the supporting bracket 52 of the second supporting device 50 in the left-right direction of the silo 10 is smaller than the spacing between the second supporting hooks 70, so as to ensure that the supporting bracket 52 can move upward into the space enclosed by the second supporting hooks 70 or move out of the space enclosed by the second supporting hooks 70 smoothly, but not limited to this.

[0024] like Figure 3 As shown, the supporting driver 41 (51) is a motor, the output shaft of the motor is a hollow structure, and a threaded nut structure is processed on the inner wall of the hollow structure. A threaded rod 80 is inserted into the threaded nut structure from the upper and lower directions of the silo 10 (i.e., as indicated by the arrow C), and the upper end of the threaded rod 80 is rotatably assembled and connected to the supporting bracket 42 (52), and the lower end of the threaded rod 80 extends downward from the motor; therefore, during the rotation of the output shaft of the motor, the threaded nut structure and the threaded rod 80 are meshed and driven to move up and down relative to the threaded nut structure; since the supporting bracket 42 (52) is rotatably assembled and connected to the upper end of the threaded rod 80, the threaded rod 80 that moves up and down drives the supporting bracket 42 (52) to move up and down, so that the supporting bracket 42 pushes the material tray 200 on the first supporting hook 60 into the first material tray area 11, or the supporting bracket 52 pushes the material tray 200 on the second supporting hook 70 into the second material tray area 12. In order to improve the smoothness of the lifting and lowering of the jacking bracket 42 (52), the first jacking device 40 and the second jacking device 50 also each include a lifting guide rod 43 (53), the upper end of the lifting guide rod 43 (53) is assembled on the upper and lower partitions 10b described below, and the lower end of the lifting guide rod 43 (53) passes downward through the jacking bracket 42 (52) and is installed on the bottom of the frame 10a described below. In order to facilitate the external manipulator to switch between the first supporting hook 60 and the second supporting hook 70 through the tray storage working chamber 13, the jacking bracket 42 of the first jacking device 40 is spaced apart from the first supporting hook 60 in the upper and lower directions of the silo 10 in the initial position, and the jacking bracket 52 of the second jacking device 50 is spaced apart from the second supporting hook 70 in the upper and lower directions of the silo 10 in the initial position, as shown in the state. Figure 3 shown.

[0025] like Figures 1 to 3 As shown, the silo 10 includes a frame 10a and upper and lower partitions 10b located in the middle of the frame 10a; the upper and lower partitions 10b separate the interior of the frame 10a into a material tray storage working chamber 13 and a movable chamber 14 located below the material tray storage working chamber 13, and the top support bracket 42 (52) is located in the movable chamber 14 to avoid being in a state such as Figure 3 The supporting bracket 42 (52) in the initial position is shown as protruding from the tray storage working chamber 13, thus causing obstacles to the external manipulator moving in the tray storage working chamber 13. The supporting driver 41 (51) is assembled at the bottom of the frame 10a, the first tray area 11 and the second tray area 12 are located at the top surface 15 of the frame 10a, the first clamp 20 and the second clamp 30 are installed on the top surface 15 of the frame 10a; correspondingly, the first supporting hook 60 and the second supporting hook 70 are suspended at the top of the frame 10a. Specifically, the silo 10 further includes left and right partitions 10c and front and rear partitions 10d installed on the top surface 15 of the frame 10a; the left and right partitions 10c are located beside the rear sides of the first material tray area 11 and the second material tray area 12, and provide protection for the material trays 200 in the first material tray area 11 and the second material tray area 12; the front and rear partitions 10d are located between the first material tray area 11 and the second material tray area 12, and the front and rear partitions 10d are also connected to the middle of the left and right partitions 10c, so as to separate the material trays 200 in the first material tray area 11 and the second material tray area 12 with the help of the front and rear partitions 10d, ensuring that the respective material trays 200 do not interfere with each other. More specifically, the left and right partitions 10c and the front and rear partitions 10d together enclose a T-shaped structure to make the layout more reasonable, but not limited to this.

[0026] like Figure 1 and Figure 2 As shown, the first clamp 20 and the second clamp 30 each include a clamping cylinder 21 (31) and a pressing block 22 (32). The clamping cylinder 21 of the first clamp 20 is respectively located on the front and rear sides of the first material tray area 11, and the output ends of the clamping cylinders 21 of the first clamp 20 face each other. The pressing block 22 of the first clamp 20 is installed at the output end of the clamping cylinder 21 of the first clamp 20, so as to achieve the purpose of the first clamp 20 automatically clamping or automatically loosening the material tray 200 in the first material tray area 11 from the front and rear directions; the clamping cylinders 31 of the second clamp 30 are respectively located on the front and rear sides of the second material tray area 12, and the output ends of the clamping cylinders 31 of the second clamp 30 face each other. The pressing block 32 of the second clamp 30 is installed at the output end of the clamping cylinder 31 of the second clamp 30, so as to achieve the purpose of the second clamp 30 automatically clamping or automatically loosening the material tray 200 in the second material tray area 12 from the front and rear directions.

[0027] Compared with the prior art, since the tray storage and release mechanism 100 of the present invention also includes a first supporting device 40, a second supporting device 50, a first supporting hook 60 and a second supporting hook 70, the first supporting hook 60 is suspended in the tray storage and release working chamber 13 and is respectively located on the left and right sides of the first tray area 11, the second supporting hook 70 is suspended in the tray storage and release working chamber 13 and is respectively located on the left and right sides of the second tray area 12, the first supporting device 40 and the second supporting device 50 each include a supporting drive 41 (51) installed on the silo 10 with the output end arranged upward and a supporting bracket 42 (52) installed at the output end of the supporting drive 41 (5), the supporting bracket 42 of the first supporting device 40 is located directly below the first tray area 11, and the supporting bracket 52 of the second supporting device 50 is located directly below the second tray area 12. Therefore, during the process of folding and releasing the material tray 200, when the external manipulator moves from the material bin 10 from the back to the front (i.e., the opposite direction indicated by the arrow B) together with the material tray 200 it supports into the space enclosed by the first supporting hooks 60, the external manipulator at this time slides downward out of the first supporting hooks 60 and enters the material tray folding and releasing working chamber 13, so that the material tray 200 supported by the external manipulator is supported by the first supporting hooks 60; then, the external manipulator moves in the material tray folding and releasing working chamber 13 to just below the space enclosed by the second supporting hooks 70; then, the external manipulator moves upward again until it is in contact with the lowest material tray 200 in the second material tray area 12. At this time, the second clamp 30 releases its clamping of the material tray 200 in the second material tray area 12, so that the lowest material tray 200 in the second material tray area 12 falls onto the external manipulator. The first support hook 60 is supported by the external robot, and the other material trays 200 in the second material tray area 12 are clamped again by the second clamp 30; finally, the external robot moves the supported material tray 200 out of the material bin 10 from the front to the back (i.e., the direction indicated by the arrow B); and the material tray 200 supported on the first supporting hook 60 transported by the external robot is driven by the supporting driver 41 of the first supporting device 40, and the supporting bracket 42 of the first supporting device 40 upwardly loads the material tray 200 on the first supporting hook 60 into the first material tray area 11; and in the process of loading the material tray 200 into the first material tray area 11, the first clamp 20 needs to first release the clamping of the material tray 200 in the first material tray area 11, and when the material tray 200 on the first supporting hook 60 is loaded into the first material tray area 11, the first clamp 20 at this time clamps the material tray 200 in the first material tray area 11 again.Similarly, when the external manipulator moves from the material bin 10 from the back to the front together with the material tray 200 it supports into the space enclosed by the second supporting hooks 70, the external manipulator at this time slides downward out of the second supporting hooks 70 and enters the material tray storage and release working chamber 13, so that the material tray 200 supported by the external manipulator is supported by the second supporting hooks 70; then, the external manipulator moves in the material tray storage and release working chamber 13 to just below the space enclosed by the first supporting hooks 60; then, the external manipulator moves upward again until it is in contact with the lowest material tray 200 in the first material tray area 11. At this time, the second clamp 30 releases its clamping of the material tray 200 in the first material tray area 11, so that the lowest material tray 200 in the first material tray area 11 falls onto the external manipulator and is supported, and the first The other trays 200 in the tray area 11 are clamped again by the first clamp 20; finally, the external manipulator moves the tray 200 it supports out of the bin 10 from the front to the back; and the tray 200 supported on the second supporting hook 70 delivered by the external manipulator is driven by the supporting driver 51 of the second supporting device 50, and the supporting bracket 52 of the second supporting device 50 upwardly loads the tray 200 on the second supporting hook 70 into the second tray area 12; and in the process of loading the tray 200 into the second tray area 12, the second clamp 30 needs to first release the clamping of the tray 200 in the second tray area 12, and when the tray 200 on the second supporting hook 70 is loaded into the second tray area 12, the second clamp 30 at this time re-clamps the tray 200 in the second tray area 12. Therefore, the tray storage mechanism 100 of the present invention has the advantages of convenient and reliable storage operation of the tray 200. At the same time, by providing the first supporting device 40 and the second supporting device 50, the storage position of the material tray 200 can be flexibly selected according to actual needs, that is, the first material tray area 11 can be a material tray folding area, and the second material tray area 12 can be a material tray unloading area, and vice versa.

[0028] The above disclosure is only a preferred embodiment of the present invention, which cannot be used to limit the scope of the present invention. Therefore, equivalent changes made according to the claims of the present invention are all within the scope of the present invention.

Claims

1. A tray retrieval mechanism, comprising a material bin and a first clamp and a second clamp installed on the material bin, the material bin having a first tray area, a second tray area and a tray retrieval working chamber, the first tray area and the second tray area being spaced apart and arranged side by side in the left and right directions of the material bin, the tray retrieval working chamber being located directly below the first tray area and the second tray area, the tray retrieval working chamber being also connected to the first tray area and the second tray area in the upper and lower directions of the material bin respectively, the first clamp being used to clamp the tray in the first tray area, the second clamp being used to clamp the tray in the second tray area, and the characteristic is that The tray storage and release mechanism also includes a first supporting device, a second supporting device, a first supporting hook and a second supporting hook, wherein the first supporting hook is suspended in the tray storage and release working chamber and is respectively located on the left and right sides of the first tray area, the second supporting hook is suspended in the tray storage and release working chamber and is respectively located on the left and right sides of the second tray area, the first supporting device and the second supporting device each include a supporting driver installed on the silo with the output end facing upward and a supporting bracket installed at the output end of the supporting driver, the supporting bracket of the first supporting device is located directly below the first tray area, and the supporting bracket of the second supporting device is located directly below the second tray area; wherein, the supporting bracket of the first supporting device will, under the drive of the supporting driver of the first supporting device, push the tray loaded on the first supporting hook from the front and rear direction of the silo upward into the first tray area, or, under the drive of the supporting driver of the second supporting device, push the tray loaded on the second supporting hook from the front and rear direction of the silo upward into the second tray area; The hook portions between the first supporting hooks are aligned with each other, and the hook portions between the second supporting hooks are aligned with each other; The material bin includes a frame and upper and lower partitions located in the middle of the frame, the upper and lower partitions separate the interior of the frame into the material tray storage working chamber and the movable chamber located below the material tray storage working chamber, the top support bracket is located in the movable chamber, the top support drive is assembled at the bottom of the frame, the first material tray area and the second material tray area are located at the top surface of the frame, and the first clamp and the second clamp are installed on the top surface of the frame.

2. The tray retracting mechanism according to claim 1, characterized in that: The size of the supporting bracket of the first supporting device in the left-right direction of the silo is smaller than the distance between the first supporting hooks, and the size of the supporting bracket of the second supporting device in the left-right direction of the silo is smaller than the distance between the second supporting hooks.

3. The tray retracting mechanism according to claim 1, characterized in that: The jacking drive is a motor, the output shaft of the motor is a hollow structure, a nut structure is processed on the inner wall of the hollow structure, a screw rod is inserted into the nut structure from the upper and lower directions of the silo, the upper end of the screw rod is rotatably assembled and connected to the jacking bracket, and the lower end of the screw rod extends downward from the motor.

4. The tray retracting mechanism according to claim 1, characterized in that: The first clamp and the second clamp each include a clamping cylinder and a pressing block. The clamping cylinders of the first clamp are respectively located on the front and rear sides of the first material tray area, and the output ends of the clamping cylinders of the first clamp face each other. The pressing block of the first clamp is installed at the output end of the clamping cylinder of the first clamp. The clamping cylinders of the second clamp are respectively located on the front and rear sides of the second material tray area, and the output ends of the clamping cylinders of the second clamp face each other. The pressing block of the second clamp is installed at the output end of the clamping cylinder of the second clamp.

5. The tray retracting mechanism according to claim 1, characterized in that: The silo also includes left and right partitions and front and rear partitions installed on the top surface of the frame, the left and right partitions are located beside the rear sides of the first material tray area and the second material tray area, the front and rear partitions are located between the first material tray area and the second material tray area, and the front and rear partitions are also connected to the middle of the left and right partitions.

6. The tray retracting mechanism according to claim 5, characterized in that: The left and right partitions and the front and rear partitions together form a T-shaped structure.

7. The tray retracting mechanism according to claim 1, characterized in that: The first jacking device and the second jacking device also each include a jacking guide rod, the upper end of the jacking guide rod is assembled on the upper and lower partitions, and the lower end of the jacking guide rod passes downward through the jacking bracket and is installed on the bottom of the frame.

8. The tray retracting mechanism according to claim 1, characterized in that: The tray storage working chamber passes through the silo in the front-to-rear direction of the silo, the supporting bracket of the first supporting device is spaced apart from the first supporting hook in the upper and lower directions of the silo in the initial position, and the supporting bracket of the second supporting device is spaced apart from the second supporting hook in the upper and lower directions of the silo in the initial position.

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