Tray tidying and discharging work station and tidying process

Abstract

The invention discloses a material tray arranging and discharging work station. The work station comprises a skip car top rotating mechanism which is arranged on the upper portion and used for clamping a skip car. A skip car bottom positioning mechanism for clamping the skip car is arranged at the corresponding position of the lower part of the skip car top rotating mechanism; a single-arm discharging machine is arranged on one side of the skip car top rotating mechanism and one side of the skip car bottom positioning mechanism. A movable roller conveying line is arranged below the single-arm blanking machine; an automatic tray dumping machine is arranged on the outer side of the movable roller conveying line; and an empty tray collecting belt is arranged below the automatic tray dumping machine. By means of the work station and the arrangement technology, freeze-dried food can be automatically discharged, materials and trays are collected, the frequency of manual intervention is reduced, and the quality of the freeze-dried food is guaranteed.

Description

Technical Field

[0001] The invention belongs to the field of food processing equipment, and in particular relates to a tray sorting and unloading workstation and a sorting process. Background Art

[0002] At present, in the field of freeze-dried food processing, the freeze-dried food coming out of the freeze-drying warehouse is uniformly placed in the tray on the material cart when unloading, and then the material cart is pushed to the unloading area, the material tray is manually removed and the freeze-dried food is poured into the workbench for collection. The on-site unloading station requires a large number of manual work, and the number of trays loaded on the material cart is large, which is inconvenient to manually take and put. Production is 24 hours a day without stopping, and the physical strength of the unloading tray workers is very high. In the existing manual unloading scheme for freeze-dried food, the unloading tray area adopts a fully manual working method, which is divided into 2-3 shifts a day. The labor intensity is high, and the workers in this type of work are seriously aging. Summary of the invention

[0003] The present invention provides a tray sorting and unloading workstation and a sorting process. The use of the workstation and the sorting process can automatically unload freeze-dried food, collect materials and trays, reduce the frequency of manual intervention, and ensure the quality of freeze-dried food.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a tray sorting and unloading workstation, the workstation comprising a top rotating mechanism of a material cart arranged at the upper part for clamping the material cart; a bottom positioning mechanism of the material cart for clamping the material cart is arranged at a corresponding position below the top rotating mechanism of the material cart; a single-arm unloading machine is arranged on one side of the top rotating mechanism of the material cart and the bottom positioning mechanism of the material cart; a moving roller conveyor line is arranged below the single-arm unloading machine; an automatic tray turning machine is arranged outside the moving roller conveyor line; and an empty tray collection belt is arranged below the automatic tray turning machine.

[0005] Preferably, the workstation further comprises a material lifting belt arranged on the outside of the automatic tray turning machine.

[0006] Preferably, the top rotating mechanism of the material cart includes an I-beam arranged at the lower part; a positioning cylinder for positioning the material cart is arranged on the side of the I-beam; the top rotating mechanism of the material cart also includes a top fixed plate arranged at the upper part; a top rotating motor is arranged between the I-beam and the top fixed plate; the top rotating motor is connected to a slewing support; and a support wheel is also arranged at the lower part of the top rotating mechanism of the material cart.

[0007] Preferably, the bottom positioning mechanism of the material cart includes a bottom fixing plate arranged at the bottom; a lifting cylinder is arranged on the upper part of the bottom fixing plate; a shaft sleeve is arranged on the upper part of the lifting cylinder; and a fixed shaft is arranged on the upper part of the shaft sleeve.

[0008] Preferably, the single-arm unloading machine includes a bottom frame arranged at the lower part; a transverse frame is vertically arranged on the upper part of the bottom frame; and a lifting frame is arranged on the transverse frame.

[0009] Preferably, the bottom frame includes a bottom frame; the bottom frame is provided with a bottom linear rail and a bottom rack for moving the transverse frame; the transverse frame includes a vertically arranged transverse frame; a transverse motor for driving the transverse frame to move along the bottom frame is installed on one side of the transverse frame; the transverse linear rail and a transverse rack for moving the lifting frame are installed on the transverse frame; the lifting frame includes a lifting frame; a material rack arm is provided at the front end of the lifting frame; the lower part of the material rack arm is connected to the material fork through a material fork linear rail; the lifting frame is provided with a lifting drive system for driving it to move along the transverse frame; the lifting frame is also provided with a material fork cylinder for driving the material fork to reciprocate along the material fork linear rail.

[0010] Preferably, the movable roller conveyor line comprises a roller movable guide rail arranged at the lower part; a plurality of independent roller frames are vertically arranged on the roller movable guide rail; and a roller motor and a roller are arranged on the roller frame.

[0011] Preferably, the automatic turning machine includes an automatic turning machine frame arranged at the bottom; the automatic turning machine frame is a frame structure, and chains with bent plates that can be driven by the turning machine driving system are arranged on both sides of the upper part of the automatic turning machine frame; clamping mechanisms are arranged at intervals on the chains with bent plates.

[0012] Preferably, the chuck mechanism includes a connecting plate connected to a chain with a bent plate; the inner side of the connecting plate is connected to a base via a clamping rod; a spring is installed on the clamping rod between the connecting plate and the base; a support plate is provided between the connecting plates, and a detachable tray is provided between the upper part of the support plate and the base; a bearing is installed on the connecting plate; a fixed plate is provided on the inner side of the upper part of the automatic tipping machine frame at the rotation point of the chain with the bent plate; and tray stops are provided at intervals on the chain with the bent plate.

[0013] The present invention also provides a tidying process of a tray tidying and unloading workstation, the tidying process comprising the following steps: The material cart moves from the freeze-drying bin to the unloading station, and is fixed by the rotating mechanism on the top of the material cart and the positioning mechanism at the bottom of the material cart. The roller frame on the upper part of the mobile roller conveyor line moves along the roller moving guide rail to make way for the unloading station, and the single-arm unloading machine takes off the eight trays of the bottom four layers of the material cart from the material cart, and the single-arm unloading machine material fork cylinder is retracted and the trays are lifted to a certain height, and the mobile roller conveyor line moves back to the bottom of the single-arm unloading machine, and the single-arm unloading machine puts the four layers of trays on the mobile roller conveyor line in turn, and the mobile roller conveyor line conveys two trays on each layer to the automatic tray turning machine in turn, until the trays on one side of the material cart are unloaded, the single-arm unloading machine returns to the origin, and the mobile roller conveyor line moves out of the unloading position, and the rotating mechanism on the top of the material cart drives the material cart to rotate 180 degrees. After the material cart is in place, the single-arm unloading machine takes out the four layers of trays on the bottom layer of the material cart, and after lifting them to a certain height, the mobile roller conveyor line is retracted to the bottom of the single-arm unloading machine, and the trays are conveyed to the automatic tray turning machine in turn; After the pallet reaches the fixed position on the automatic tray turning machine, the pallet moves forward with the conveyor line. After reaching the fixed position, the clamping mechanism clamps the pallet at the turning station and turns it 180 degrees. The material in the tray will turn over to the material lifting belt. The pallet turns over to the bottom of the automatic tray turning machine and continues. After reaching the tray loosening station, the pallet will fall onto the empty tray collection belt. The empty tray collection belt transports the pallet out until the pallets of a material truck are unloaded and the material truck is released. At this point, a material unloading cycle ends.

[0014] Compared with the prior art, the invention has the following beneficial effects: the tray unloading workstation is adopted to replace manual labor, thus reducing labor intensity, improving production stability and production efficiency, and reducing production costs; Other features and advantages of the present disclosure will become apparent from the following detailed description of exemplary embodiments of the present disclosure with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure or related technologies, the drawings required for use in the embodiments or related technical descriptions will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0016] Figure 1 A three-dimensional diagram of a tray arrangement and unloading workstation of the present invention; Figure 2 This is a top view of the tray sorting and unloading workstation of the present invention; Figure 3 This is an enlarged view of the top rotating mechanism of the skip of the present invention; Figure 4 This is a diagram showing the internal structure of the top rotating mechanism of the material car of the present invention; Figure 5 This is the internal structure diagram of the bottom positioning mechanism of the material cart of the present invention; Figure 6 It is a stereoscopic diagram of the single-arm feeding machine of the present invention; Figure 7 This is a three-dimensional diagram of the bottom frame of the single-arm feeder of the present invention; Figure 8 This is a three-dimensional diagram of the transverse frame of the single-arm feeder machine of the present invention; Fig. 9 This is a first stereoscopic view of the lifting frame of the single-arm feeder machine of the present invention; Fig.10 This is a second stereoscopic view of the lifting frame of the single-arm feeder machine of the present invention; Fig.11 It is a three-dimensional diagram of the mobile roller conveyor line of the present invention; Fig.12 This is a working state diagram of the automatic tray turning machine and the empty tray collecting belt of the present invention; Fig.13 This is a partial enlarged view of the automatic tray turning machine of the present invention; Fig.14 This is an enlarged view of the plate clamping mechanism of the automatic plate turning machine of the present invention; Fig.15 This is an enlarged view of the material lifting belt of the present invention; In the figure: 1. Rotating mechanism at the top of the material cart, 2. Positioning mechanism at the bottom of the material cart, 3. Single-arm unloading machine, 4. Mobile roller conveyor line, 5. Automatic turntable, 6. Empty tray collection belt, 7. Material lifting belt, 11. I-beam, 12. Positioning cylinder, 13. Top fixed plate, 14. Top rotating motor, 15. Slewing support, 16. Support wheel, 21. Bottom fixed plate, 22. Lifting cylinder, 23. Bushing, 24. Fixed shaft, 31. Bottom frame, 32. Transverse frame, 33. Lifting frame, 311. Bottom frame, 312. Bottom linear rail, 313. Bottom rack, 321. Transverse frame, 32 2. Transverse movement motor, 323. Transverse movement linear rail, 324. Transverse movement rack, 331. Lifting frame, 332. Material rack arm, 333. Lifting drive system, 334. Material fork cylinder, 335. Material fork linear rail, 336. Material fork, 41. Roller frame, 42. Roller motor, 43. Roller, 44. Roller moving guide rail, 51. Automatic tipping machine frame, 52. Chain with bent plate, 53. Tipping machine drive system, 54. Clamping mechanism, 541. Connecting plate, 542. Base, 543. Clamping rod, 544. Pallet stopper, 545. Pallet, 546. Support plate, 547. Bearing, 548. Fixed plate. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] Unless otherwise specifically stated, the relative arrangement of the parts and steps described in these embodiments, numerical expressions and numerical values ​​do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0019] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0020] See also Figure 1-15The present invention provides a technical solution: a tray sorting and unloading workstation, the workstation includes a tray top rotating mechanism 1 arranged at the upper part for clamping the tray; a tray bottom positioning mechanism 2 for clamping the tray is arranged at the corresponding position below the tray top rotating mechanism 1; a single-arm unloading machine 3 is arranged on one side of the tray top rotating mechanism 1 and the tray bottom positioning mechanism 2; a moving roller conveyor line 4 is arranged below the single-arm unloading machine 3; an automatic tray turning machine 5 is arranged outside the moving roller conveyor line 4; an empty tray collecting belt 6 is arranged below the automatic tray turning machine 5.

[0021] The rotating mechanism 1 at the top of the material cart and the positioning mechanism 2 at the bottom of the material cart cooperate with each other to clamp the transported material cart and lift it to a suitable height for unloading. The trays are taken off the material cart in batches by the single-arm unloading machine 3, and placed layer by layer on the moving roller conveyor line 4 for outward transportation. When transported to the automatic tray turning machine 5, the automatic tray turning machine 5 performs the tray turning operation, unloads the freeze-dried food, and places the empty tray (tray) on the empty tray collection belt 6 for transportation.

[0022] The workstation also includes a material lifting belt 7 arranged outside the automatic tray turning machine 5. The material lifting belt 7 is connected to the turning position of the automatic tray turning machine 5. As the tray turns over, the freeze-dried food directly falls onto the material lifting belt 7 and is transported away. In order to prevent the freeze-dried food from sticking to the tray, a piece of anti-sticking freeze-drying paper is often placed on the tray, and the paper and the freeze-dried food fall onto the material lifting belt 7 together.

[0023] The top rotating mechanism 1 of the material cart includes an I-beam 11 arranged at the bottom; a positioning cylinder 12 for positioning the material cart is arranged on the side of the I-beam 11; the top rotating mechanism 1 of the material cart also includes a top fixing plate 13 arranged at the top; a top rotating motor 14 is arranged between the I-beam 11 and the top fixing plate 13; the top rotating motor 14 is connected to a slewing support 15; and a support wheel 16 is also arranged at the bottom of the top rotating mechanism 1 of the material cart. The bottom positioning mechanism 2 of the material cart includes a bottom fixing plate 21 arranged at the bottom; a jacking cylinder 22 is arranged on the top of the bottom fixing plate 21; a shaft sleeve 23 is arranged on the top of the jacking cylinder 22; and a fixed shaft 24 is arranged on the top of the shaft sleeve 23.

[0024] The top rotating mechanism 1 of the trolley is fixed on the ceiling through the top fixing plate 13, and the bottom positioning mechanism 2 of the trolley is fixed on the floor through the bottom fixing plate 21. The trolley is manually sent to the space between the top rotating mechanism 1 and the bottom positioning mechanism 2 of the trolley through the track, and the I-beam 11 is part of the upper track. At this time, the trolley is just below the I-beam 11 and above the fixed shaft 24. At this time, the positioning cylinder 12 fixes the trolley in the corresponding position and does not move, and the lifting cylinder 22 lifts upward, and the fixed shaft 24 on the upper part of the sleeve 23 is used to support and fix the trolley between the top rotating mechanism 1 and the bottom positioning mechanism 2 of the trolley. When the trolley needs to rotate, the top rotating motor 14 drives the slewing support 15 to move, so that this small section of the I-beam 11 rotates, and thereby drives the trolley to rotate, and the bottom of the trolley rotates on the fixed shaft 24.

[0025] The single-arm unloading machine 3 comprises a bottom frame 31 arranged at the bottom; a transverse frame 32 is vertically arranged on the top of the bottom frame 31 ; and a lifting frame 33 is arranged on the transverse frame 32 .

[0026] The bottom frame 31 includes a bottom frame 311; the bottom frame 311 is provided with a bottom linear rail 312 and a bottom rack 313 for moving the transverse frame 32; the transverse frame 32 includes a vertically arranged transverse frame 321; a transverse motor 322 for driving the transverse frame 32 to move along the bottom frame 31 is installed on one side of the transverse frame 321; the transverse linear rail 323 and a transverse rack 324 for moving the lifting frame 33 are installed on the transverse frame 321; the lifting frame 33 includes a lifting frame 331; a material rack arm 332 is provided at the front end of the lifting frame 331; the lower part of the material rack arm 332 is connected to the material fork 336 through the material fork linear rail 335; the lifting frame 33 is provided with a lifting drive system 333 for driving it to move along the transverse frame 32; the lifting frame 331 is also provided with a material fork cylinder 334 for driving the material fork 336 to reciprocate along the material fork linear rail 335.

[0027] The bottom frame 31 provides a moving track in the X-axis direction for the horizontal movement of the transverse frame 32, and the transverse frame 32 provides a moving track in the Y-axis direction for the vertical movement of the lifting frame 33, and the bottom mobile roller conveyor line 4 provides support for the loading and unloading of the material tray. The transverse frame 32 includes a vertically arranged transverse frame 321; a transverse motor 322 for driving the transverse frame 32 to move along the bottom frame 31 is installed on one side of the transverse frame 321; a transverse linear rail 323 and a transverse rack 324 for moving the lifting frame 33 are installed on the transverse frame 321. The lifting frame 33 moves along the transverse linear rail 323, and the gears on the lifting frame 33 and the transverse rack 324 are meshed with each other to provide power for the up and down movement of the lifting frame 33. The lifting drive system 333 provided on the lifting frame 33 provides power for its movement along the transverse frame 32, the material fork linear rail 335 provided on the material frame arm 332 provides a track and support for the movement of the material fork 336, and the material fork cylinder 334 is provided at the rear end of the material fork 336 to provide power for its reciprocating motion, thereby also expanding the movement range in the X-axis direction of loading and unloading. The material forks 336 are arranged in at least two rows, and multiple groups are arranged in each row. The arrangement of multiple rows and multiple groups of material forks 336 realizes the operation of loading and unloading multiple trays at the same time.

[0028] After the material cart at the unloading station is fixed, the four-layer eight-pair material fork 336 takes eight trays from the material cart each time and sends them out from the mobile roller conveyor line 4 in sequence, docking with the manual station or docking with the turning device to collect the freeze-dried materials. Specifically, after the material cart is fixed, the lifting frame 33 takes four layers of eight trays of materials from the material cart each time, and puts two trays of materials on each layer on the mobile roller conveyor line 4 at a time, and transports them to the manual unloading station or docking with the automatic turning station, and repeats this action until the material on the material cart is unloaded.

[0029] The movable roller conveyor line 4 comprises a roller movable guide rail 44 arranged at the lower part; a plurality of independent roller frames 41 are vertically arranged on the roller movable guide rail 44; and a roller motor 42 and a roller 43 are arranged on the roller frame 41.

[0030] The mobile roller conveyor line 4 includes a roller frame 41 arranged at the bottom; a plurality of roller motors 42 and rollers 43 are independently arranged on the upper part of the roller frame 41. In order to facilitate the transportation of the material tray by the material fork 336 without being hindered by the existence of the mobile roller conveyor line 4, the roller frame 41 is set as a plurality of independent structures, each roller motor 42 drives a separate roller 43 to move independently, the material fork 336 moves between the roller frames 41, places the material tray on the roller 43, and then starts the roller motor 42 to transport the material tray away. In addition, in order to avoid the steric hindrance of the single-arm unloader 3 during unloading, a roller moving guide rail 44 is set so that the roller frame 41 can move back and forth, and in order to enable multiple roller frames 41 to move as a whole, the lower parts of the roller frames 41 are arranged in an interconnected manner.

[0031] The automatic turning machine 5 includes an automatic turning machine frame 51 arranged at the bottom; the automatic turning machine frame 51 is a frame structure, and the upper sides of the automatic turning machine frame 51 are provided with bent plate chains 52 which can be driven by the turning machine driving system 53; and the bent plate chains 52 are provided with clamping mechanisms 54 at intervals.

[0032] The automatic turning machine frame 51 is made of profiles, and a turning machine driving system 53 is installed on the upper part. The turning machine driving system 53 is generally set as a motor to drive the bent plate chain 52 to move. A clamping mechanism 54 is set on the bent plate chain 52 so that the tray 545 can be stably clamped thereon, and the material can be dropped when the front end material tray is turned over, and the clamping mechanism 54 can automatically loosen the tray 545 at the lower part, so that the tray 545 falls into the empty material tray collection belt 6.

[0033] The chuck mechanism 54 includes a connecting plate 541 connected to the chain 52 with a bent plate; the inner side of the connecting plate 541 is connected to the base 542 via a clamping rod 543; a spring is installed on the clamping rod 543 between the connecting plate 541 and the base 542; a support plate 546 is provided between the connecting plates 541, and a detachable tray 545 is provided between the upper part of the support plate 546 and the base 542; a bearing 547 is installed on the connecting plate 541; a fixing plate 548 is provided on the inner side of the upper part of the automatic turnover machine frame 51 at the rotation point of the chain 52 with a bent plate; tray blocks 544 are provided at intervals on the chain 52 with a bent plate.

[0034] The clamping mechanism 54 arranged opposite to each other realizes the automatic clamping and loosening of the tray 545 by squeezing the spring, that is, the connecting plate 541 is fixed on the chain 52 with the curved plate and moves with it, and a clamping rod 543 with a spring is arranged at the front end of the connecting plate 541, and the front end of the spring presses on the base 542. When passing through the fixed plate 548 area, the connecting plate 541 is squeezed, and the spring on the clamping rod 543 provides a forward thrust, so that the base 542 clamps the tray 545, and the tray stopper 544 makes it more firmly fixed. When leaving the fixed plate 548 area, the base 542 is loosened, and the tray 545 automatically falls on the empty material tray collection belt 6.

[0035] Specifically, the single-arm unloading machine 3 and the mobile roller conveyor line 4 transport the pallet 545 to the automatic turning machine 5, and the automatic turning machine 5 rotates to drive the pallet 545 to move forward. When it moves to the turning station, the clamping mechanism 54 clamps the pallet 545, and the automatic turning machine 5 will flip the pallet 545 180 degrees at the active sprocket position, and the material will be turned onto the material lifting belt 7. The pallet 545 will continue to rotate with the chain. After it reaches the loose material tray position, the clamping mechanism 54 will release the pallet 545, and the pallet 545 will fall on the empty material tray collection belt 6 and send it out. The empty pallet 545 can be collected and placed manually, or it can be placed by equipment.

[0036] A spring is installed at the clamping rod 543 of the chuck mechanism 54, and a bearing 547 is installed at the connecting plate 541. A pulley is installed on the bearing 547, and the pulley slides on the inner side of the automatic turning tray frame 51. At the motor, there are two fixed plates 548 on both sides of the conveyor line. The chuck mechanism 54 is at this position. Since the fixed plate 548 has a certain thickness, the bearing 547 is squeezed by the fixed plate 548, and the clamping rod 543 will be squeezed to the inside of the conveyor line, thereby clamping the tray 545. After the tray is turned over and leaves the fixed plate 548, the clamping rod 543 will recover under the action of the spring, thereby loosening the tray 545, and realizing the action of clamping and loosening the tray. The loosened tray falls onto the empty tray collection belt 6 and is transported away.

[0037] A material tray sorting and unloading workstation sorting process, the sorting process comprises the following steps: The material cart moves from the freeze-drying bin to the unloading station, and is fixed by the rotating mechanism 1 at the top of the material cart and the positioning mechanism 2 at the bottom of the material cart. The roller frame 41 on the upper part of the mobile roller conveyor line 4 moves along the roller moving guide rail 44 to make way for the unloading station, and the single-arm unloader 3 takes the eight trays 545 from the bottom four layers of the material cart from the material cart. The material fork cylinder 334 of the single-arm unloader 3 is retracted and the tray 545 is lifted to a certain height. The mobile roller conveyor line 4 moves back to the bottom of the single-arm unloader 3, and the single-arm unloader 3 places the four layers of trays on the mobile roller conveyor line 4 in turn. On the roller conveyor line 4, the mobile roller conveyor line 4 sequentially conveys two pallets 545 on each layer to the automatic tray turning machine 5, until the pallets 545 on one side of the material cart are unloaded, the single-arm unloading machine 3 returns to the origin, the mobile roller conveyor line 4 moves out of the unloading position, and the rotating mechanism 1 on the top of the material cart drives the material cart to rotate 180 degrees. After the material cart is in place, the single-arm unloading machine 3 takes out the four pallets 545 on the bottom layer of the material cart, and after lifting them to a certain height, the mobile roller conveyor line 4 is retracted to the bottom of the single-arm unloading machine 3, and the pallets 545 are sequentially conveyed to the automatic tray turning machine 5; After the tray 545 arrives at the fixed position on the automatic tray turning machine 5, the tray 545 moves forward with the conveyor line. After reaching the fixed position, the clamping mechanism 54 clamps the tray 545 at the turning station and turns it 180 degrees. The material in the tray will be turned over to the material lifting belt 7. The tray 545 turns over to the bottom of the automatic tray turning machine 5 and continues. After reaching the tray loosening station, the tray 545 will fall onto the empty tray collecting belt 6. The empty tray collecting belt 6 transports the tray 545 out until the tray 545 of a material cart is unloaded and the material cart is released. At this point, a material unloading cycle ends.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A tray sorting and unloading workstation, characterized by: The workstation comprises a material cart top rotating mechanism (1) arranged at the top for clamping the material cart; a material cart bottom positioning mechanism (2) for clamping the material cart is arranged at a corresponding position below the material cart top rotating mechanism (1); a single-arm feeder (3) is arranged on one side of the material cart top rotating mechanism (1) and the material cart bottom positioning mechanism (2); a moving roller conveyor line (4) is arranged below the single-arm feeder (3); an automatic tray turning machine (5) is arranged outside the moving roller conveyor line (4); and an empty tray collecting belt (6) is arranged below the automatic tray turning machine (5).

2. A tray sorting and unloading workstation according to claim 1, characterized in that: The workstation further comprises a material lifting belt (7) arranged outside the automatic tray turning machine (5).

3. A tray sorting and unloading workstation according to claim 1, characterized in that: The top rotating mechanism (1) of the material cart comprises an I-beam (11) arranged at the bottom; a positioning cylinder (12) for positioning the material cart is arranged on the side of the I-beam (11); the top rotating mechanism (1) of the material cart further comprises a top fixing plate (13) arranged at the top; a top rotating motor (14) is arranged between the I-beam (11) and the top fixing plate (13); the top rotating motor (14) is connected to a slewing support (15); and a support wheel (16) is also arranged at the bottom of the top rotating mechanism (1).

4. A tray sorting and unloading workstation according to claim 1, characterized in that: The bottom positioning mechanism (2) of the material cart comprises a bottom fixing plate (21) arranged at the bottom; a lifting cylinder (22) is arranged on the top of the bottom fixing plate (21); a shaft sleeve (23) is arranged on the top of the lifting cylinder (22); and a fixed shaft (24) is arranged on the top of the shaft sleeve (23).

5. A tray sorting and unloading workstation according to claim 1, characterized in that: The single-arm material discharging machine (3) comprises a bottom frame (31) arranged at the bottom; a transverse frame (32) is vertically arranged on the top of the bottom frame (31); and a lifting frame (33) is arranged on the transverse frame (32).

6. A tray sorting and unloading workstation according to claim 5, characterized in that: The bottom frame (31) comprises a bottom frame (311); a bottom linear rail (312) and a bottom rack (313) for moving the transverse frame (32) are installed on the bottom frame (311); the transverse frame (32) comprises a vertically arranged transverse frame (321); a transverse motor (322) for driving the transverse frame (32) to move along the bottom frame (31) is installed on one side of the transverse frame (321); a transverse linear rail (323) for moving the lifting frame (33) is installed on the transverse frame (321). and a transverse rack (324); the lifting frame (33) comprises a lifting frame (331); a material rack arm (332) is provided at the front end of the lifting frame (331); a material fork (336) is connected to the lower part of the material rack arm (332) via a material fork linear rail (335); a lifting drive system (333) is provided on the lifting frame (33) for driving it to move along the transverse frame (32); and a material fork cylinder (334) is also provided on the lifting frame (331) for driving the material fork (336) to reciprocate along the material fork linear rail (335).

7. A tray sorting and unloading workstation according to claim 1, characterized in that: The movable roller conveyor line (4) comprises a roller movable guide rail (44) arranged at the bottom; a plurality of independent roller frames (41) are vertically arranged on the roller movable guide rail (44); and a roller motor (42) and a roller (43) are arranged on the roller frame (41).

8. A tray sorting and unloading workstation according to claim 1, characterized in that: The automatic tray turning machine (5) comprises an automatic tray turning machine frame (51) arranged at the bottom; the automatic tray turning machine frame (51) is a frame structure, and chains with bent plates (52) which can be driven by a tray turning machine driving system (53) are arranged on both sides of the upper part of the automatic tray turning machine frame (51); and clamping mechanisms (54) are arranged at intervals on the chains with bent plates (52).

9. A tray sorting and unloading workstation according to claim 8, characterized in that: The chuck mechanism (54) comprises a connecting plate (541) connected to the chain with a bent plate (52); the inner side of the connecting plate (541) is connected to the base (542) via a clamping rod (543); a spring is installed on the clamping rod (543) between the connecting plate (541) and the base (542); a support plate (546) is provided between the connecting plates (541), and a detachable tray (545) is provided between the upper part of the support plate (546) and the base (542); a bearing (547) is installed on the connecting plate (541); a fixing plate (548) is provided on the inner side of the upper part of the automatic turning machine frame (51) at the rotation position of the chain with a bent plate (52); tray stoppers (544) are provided at intervals on the chain with a bent plate (52).

10. A tray sorting and unloading workstation sorting process according to any one of claims 1 to 9, characterized in that: The finishing process comprises the following steps: The material cart moves from the freeze-drying bin to the unloading station, and is fixed by the rotating mechanism (1) at the top of the material cart and the positioning mechanism (2) at the bottom of the material cart. The roller frame (41) at the top of the moving roller conveyor line (4) moves along the roller moving guide rail (44) to make way for the unloading station. The single-arm unloading machine (3) removes the eight trays (545) at the bottom four layers of the material cart from the material cart. The material fork cylinder (334) of the single-arm unloading machine (3) retracts and lifts the trays (545) to a certain height. The moving roller conveyor line (4) moves back to the bottom of the single-arm unloading machine (3). The single-arm unloading machine (3) sequentially places the four layers of trays on the moving roller. The roller conveyor line (4) conveys two pallets (545) on each layer to the automatic tray turning machine (5) in turn, until the pallets (545) on one side of the material cart are unloaded, the single-arm unloading machine (3) returns to the origin, the roller conveyor line (4) moves out of the unloading position, and the rotating mechanism (1) on the top of the material cart drives the material cart to rotate 180 degrees. After the material cart is in place, the single-arm unloading machine (3) takes out the four pallets (545) on the bottom layer of the material cart, and after lifting them to a certain height, the roller conveyor line (4) is retracted to the bottom of the single-arm unloading machine (3), and the pallets (545) are conveyed to the automatic tray turning machine (5) in turn; After the tray (545) reaches the fixed position on the automatic tray turning machine (5), the tray (545) moves forward along the conveyor line. After reaching the fixed position, the clamping mechanism (54) clamps the tray (545) at the turning station and turns the tray 180 degrees. The material in the tray is turned onto the material lifting belt (7). The tray (545) turns over to the bottom of the automatic tray turning machine (5) and continues to move. After reaching the tray loosening station, the tray (545) falls onto the empty tray collecting belt (6). The empty tray collecting belt (6) conveys the tray (545) out until the tray (545) of a material cart is unloaded and the material cart is released. At this point, a material unloading cycle ends.

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