An automatic material discharging and box retreating structure applicable to an AGV vehicle

Abstract

The present invention relates to an automatic blanking and empty box withdrawing structure applicable to an AGV vehicle, which comprises a frame, a blanking mechanism for the box, an empty box conveyor belt arranged below the blanking mechanism for the box, and a box transfer mechanism capable of transferring the box between the blanking mechanism for the box and the empty box conveyor belt. On the one hand, the present invention realizes the automatic overturning of the box by the AGV vehicle to pour the bar stock, with stable overturning, ensuring that all the bar stock falls on the feeding platform, reducing the labor intensity and labor cost; on the other hand, it realizes the automatic withdrawal of the empty box, so as to facilitate the AGV vehicle to perform the next feeding action in time, effectively improving the production efficiency.

Description

[0001] This application is a divisional application of an application with an application date of November 16, 2021, an application number of 202111353140.3, and a title of "An Automatic Feeding Method Applicable to AGV Carts". Technical Field

[0002] The present invention belongs to the technical field of feeding, and specifically relates to an automatic blanking and empty box retreating structure applicable to AGV carts. Background Art

[0003] Centerless grinding, also known as centerless grinding, is a type of grinding process. Existing centerless grinding machines generally have two grinding wheels, a regulating wheel and a grinding wheel. The regulating wheel drives a cylindrical workpiece to rotate on a pad, and the grinding wheel grinds the workpiece.

[0004] Currently, in order to ensure stable and continuous production, it is necessary to ensure that there is enough bar stock on the feeding platform of the centerless grinding machine. That is to say, workers need to pay timely attention to the remaining amount of bar stock on the feeding platform. If there is a shortage, the bar stock needs to be replenished in a timely manner. Moreover, since the material box filled with bar stock is very heavy, it is obviously unrealistic to transport it from the stock preparation area to the grinding machine completely by manual labor. Therefore, enterprises generally use AGV carts to realize the transportation of the material box between the stock preparation area and the grinding machine.

[0005] However, the existing AGV carts are prone to the following technical problems:

[0006] 1. It can only realize the function of transporting the material box to the centerless grinding machine. In the actual production process, workers still need to remove the heavy material box from the AGV cart and pour the bar stock onto the feeding platform of the centerless grinding machine, resulting in high labor intensity and high labor costs.

[0007] 2. In order to enable the AGV cart to perform the next feeding operation, workers need to pay attention to the feeding situation of the AGV cart and remove the empty box in a timely manner. In this way, not only does it increase the labor cost, but also the feeding efficiency is low. Summary of the Invention

[0008] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a brand-new automatic blanking and empty box retreating structure applicable to AGV carts.

[0009] To solve the above technical problems, the present invention adopts the following technical solutions:

[0010] An automatic material dumping and empty box returning structure applicable to an AGV vehicle, which comprises a frame, a material box dumping mechanism, an empty box conveyor belt arranged below the material box dumping mechanism, and a material box transfer mechanism capable of transferring the material box between the material box dumping mechanism and the empty box conveyor belt. The material box dumping mechanism includes a material box moving unit and a material box flipping unit. The material box moving unit includes a moving seat movably arranged on the frame and a first driving component connected to the moving seat. A flipping area for the material box to flip is formed on the moving seat. The material box flipping unit includes a flipping seat, a second driving component, and a gate component. The flipping seat is rotatably connected in the flipping area and forms a positioning cavity for positioning the material box. An outlet is further formed on the flipping seat opposite to the opening of the material box in the positioning cavity. The second driving component is connected to the flipping seat and drives the flipping seat to be flipped. The gate component is adjustably arranged at the outlet. When the material box is flipped to the material dumping state, the gate component opens the outlet. When the material box is reset, the gate component closes the outlet. The material box transfer mechanism includes a transfer seat, a transfer conveyor belt arranged on the transfer seat, and a third driving component. The third driving component drives the transfer seat to move up and down.

[0011] According to a specific implementation and preferred aspect of the present invention, the material dumping and empty box returning structure further includes a material box conveyor belt. The material box transfer mechanism can transfer the material box between the material box conveyor belt, the material box dumping mechanism, and the empty box conveyor belt.

[0012] Preferably, the material box conveyor belt and the empty box conveyor belt are arranged parallel to each other up and down, and the output end of the material box conveyor belt and the receiving end of the empty box conveyor belt are located on the same side.

[0013] Specifically, the material box conveyor belt and the empty box conveyor belt have the same structure. The material box conveyor belt includes a horizontally arranged conveyor roller path and two first guide plates respectively arranged on both sides of the conveyor roller path. The material box passes through between the two first guide plates along the conveyor roller path.

[0014] According to another specific implementation and preferred aspect of the present invention, the frame includes two side brackets located on both sides, a cross bracket horizontally arranged between the two side brackets, and a first guide rail fixedly arranged at the bottom of the cross bracket. The first guide rail is arranged parallel to the material box conveyor belt. The moving seat is slidably connected to the first guide rail, and the first driving component drives the moving seat to reciprocate along the first guide rail. This ensures the stable movement of the moving seat and improves the transmission reliability.

[0015] Preferably, the flipping seat includes two side plates rotatably connected to the moving seat through a rotating shaft, a top plate and a bottom plate horizontally arranged between the two side plates, a limiting plate connected between the two side plates and perpendicular to the top plate and the bottom plate, and a second guiding plate arranged on the limiting plate. A positioning cavity is formed among the two side plates, the top plate, the bottom plate, and the limiting plate. The positioning cavity is open on the side away from the limiting plate to form an entrance. The material box is horizontally moved from the material box conveyor belt through the entrance and into the positioning cavity. There is a space between the top plate and the limiting plate to form a discharge port. The second guiding plate extends outward from one side of the discharge port. This facilitates the entry of the material box into the positioning cavity. At the same time, the shielding of the limiting plate prevents the material box from falling during flipping, improving the safety of the equipment.

[0016] Preferably, the gate assembly includes a gate, a second guide rail fixedly arranged on the top plate, and a driving component connected to the gate. The gate is slidably arranged on the second guide rail. The driving component drives the gate to fit against the inner side of the second guiding plate along the second guide rail, closing the discharge port. The driving component drives the gate to move away from the second guiding plate along the second guide rail, opening the discharge port.

[0017] Preferably, the material box flipping unit further includes a sensing component arranged on the rotating shaft and communicating with the gate assembly. The sensing component includes a connecting disk fixedly arranged on the moving seat, two sensors fixedly connected to the connecting disk and distributed at intervals around the center line of the corresponding rotating shaft, and an inductor fixedly arranged on the rotating shaft. During flipping, the inductor rotates from one of the two sensors to the other. It can monitor the flipping position of the material box in real time and enable the gate assembly to open and close the discharge port in a timely manner.

[0018] Preferably, there are two bottom plates respectively connected to the bottoms of the two side plates. As the transfer seat moves upward, the transfer conveyor belt can extend between the two bottom plates and connect with the material box conveyor belt. As the transfer seat moves downward, the transfer conveyor belt can connect with the empty box conveyor belt.

[0019] Preferably, before the empty box is withdrawn, the empty box after the bar stock is emptied is flipped, and the opening direction of the empty box remains the same as before flipping.

[0020] Due to the implementation of the above technical solutions, the present invention has the following advantages compared with the prior art:

[0021] On the one hand, the present invention realizes the automatic flipping of the material box by the AGV cart to dump the bar stock, with stable flipping, ensuring that all the bar stock falls on the feeding platform, reducing labor intensity and labor costs. On the other hand, it realizes the automatic withdrawal of the empty box, facilitating the AGV cart to perform the next feeding operation in a timely manner and effectively improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic structural diagram of the AGV cart of the present invention;

[0023] Figure 2 Schematic diagram of the structure of the AGV vehicle of the present invention (another perspective);

[0024] Figure 3 Partial structure schematic diagram of the AGV vehicle of the present invention;

[0025] Figure 4 is Figure 3 Right view schematic diagram of (the transfer conveyor belt is connected to the bin conveyor belt);

[0026] Figure 5 is Figure 3 Right view schematic diagram of (the transfer conveyor belt is connected to the empty bin conveyor belt);

[0027] Figure 6 is Figure 1 Enlarged structure schematic diagram of the bin tipping mechanism in ;

[0028] Figure 7 is Figure 1 Enlarged structure schematic diagram of the bin tipping mechanism in (another perspective);

[0029] Figure 8 is Figure 1 Enlarged right view schematic diagram of the bin tipping mechanism in ;

[0030] Wherein: X, bin;

[0031] 1, traveling mechanism; 10, support rod; 11, roller; 12, housing;

[0032] 2, working platform; q1, bin conveyor area; q2, bin tipping area; q3, empty bin exit area;

[0033] 3, frame; 30, support frame; 300, upper support; a0, upper support platform; a1, upper mounting seat; 301, lower support; b0, lower support platform; b1, lower mounting seat; 31, side support; 32, cross support; g1, first guide rail;

[0034] 4, bin conveyor belt; 40, conveyor roller path; 400, conveyor roller; 41, power component; 410, sprocket; 411, endless drive chain; 42, first guide plate;

[0035] 5. Bin emptying mechanism; 50. Bin moving unit; 500. Moving seat; c0. Seat body; h1. First slider; c1. Split body; q4. Flipping area; 501. First driving component; d0. Lead screw; d1. First fitting; d2. First motor; 51. Bin flipping unit; 510. Flipping seat; q5. Positioning cavity; k1. Discharge port; k2. Inlet; e0. Side plate; s. Rotating shaft; e1. Top plate; e10. Slide seat; e2. Bottom plate; e3. Limiting plate; e4. Second guiding plate; 511. Second driving component; f1. Motor bracket; f2. Second motor; 512. Gate component; m0. Gate; g2. Second guide rail; m1. Driving component; m11. Rack; m12. Gear; m13. Third motor; m14. Support seat; 513. Sensing component; n0. Connecting plate; n1. Sensor; n2. Inductor;

[0036] 6. Empty bin conveyor belt;

[0037] 7. Bin transfer mechanism; 70. Transfer seat; h2. Second slider; 71. Transfer conveyor belt; 72. Third driving component; 720. Fixed frame; 721. Third guide rail; 722. Power unit; p0. Lead screw; p1. Fourth motor; 73. Synchronous shaft;

[0038] 8. Touch screen;

[0039] 9. Three-color light column. Embodiment

[0040] To make the above objects, features, and advantages of the present application more apparent and understandable, the following detailed description of the specific embodiments of the present application is provided in conjunction with the accompanying drawings. Many specific details are set forth in the following description to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0041] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present application 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 thus should not be construed as a limitation to the present application.

[0042] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of this application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0043] In this application, unless otherwise clearly specified and defined, terms such as "installed", "connected", "joined", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0044] In this application, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature is at a higher horizontal level than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature is at a lower horizontal level than the second feature. It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it may be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation.

[0045] As Figure 1 and Figure 2 shown, the AGV cart of this embodiment includes a traveling mechanism 1, a working platform 2, a frame 3, a bin conveyor belt 4, a bin tipping mechanism 5, an empty bin conveyor belt 6, and a bin transfer mechanism 7.

[0046] Combined with Figure 3 shown, the traveling mechanism 1 is used for the AGV cart to travel between the stock preparation platform and the centerless grinder, and it includes four support rods 10, rollers 11 correspondingly arranged at the bottom of each support rod 10, and a housing 12 covering the outer periphery of the four support rods 10.

[0047] Combined with Figure 4 and Figure 5 As shown, the working platform 2 is horizontally arranged on the top of the traveling mechanism 1, and there are a bin transfer area q1, a bin dumping area q2, and an empty bin exit area q3 on the working platform 2. Among them, the bin transfer area q1 and the bin dumping area q2 are aligned. The bin X moves horizontally from the bin transfer area q1 to the bin dumping area q2. The empty bin exit area q3 is correspondingly arranged below the bin transfer area q1. The bin X is transferred from the bin dumping area q2 to the empty bin exit area q3, and the opening direction of the bin X located on the empty bin exit area q3 is the same as the opening direction of the bin X located on the bin transfer area q1.

[0048] In this example, the frame 3 is installed on the working platform 2 and includes a support frame 30, two side brackets 31, and a cross bracket 32 horizontally arranged between the tops of the two side brackets 31.

[0049] Specifically, the support frame 30 includes an upper support 300 and a lower support 301. Among them, the bin transfer area q1 is located on the upper support 300, and the empty bin exit area q3 is located on the lower support 301.

[0050] The upper support 300 includes an upper support platform a0 and two upper mounting seats a1 fixedly connected to both sides of the upper support platform a0; the lower support 301 includes a lower support platform b0 and two lower mounting seats b1 fixedly connected to both sides of the lower support platform b0.

[0051] For the convenience of implementation, the upper support platform a0 and the lower support platform b0 are integrally formed. This setting makes it convenient for the positioning and installation of the upper support platform and the lower support platform when assembling the AGV cart.

[0052] Specifically, the two side brackets 31 are respectively arranged on both sides of the bin dumping area q2.

[0053] Specifically, there are two cross brackets 32, which are arranged side by side at intervals along the horizontal movement direction of the bin X.

[0054] In this example, the bin conveyor belt 4 is arranged in the bin transfer area q1 and installed between the two upper mounting seats a1. The empty bin conveyor belt 6 is arranged in the empty bin exit area q3 and installed between the two lower mounting seats b1.

[0055] That is to say, the bin conveyor belt 4 and the empty bin conveyor belt 6 are distributed at intervals up and down. Among them, the bin conveyor belt 4 and the empty bin conveyor belt 6 are arranged in parallel, and the output end of the bin conveyor belt 4 and the receiving end of the empty bin conveyor belt 6 are located on the same side and are aligned up and down. This setting has a reasonable and compact structure, which is convenient for reducing the volume of the AGV cart and saving space.

[0056] Specifically, the bin conveyor belt 4 and the empty bin conveyor belt 6 have the same structure and opposite conveying directions. Among them, the bin conveyor belt 4 includes a horizontally arranged conveying roller path 40, a power component 41 for driving the conveying roller path 40, and two first guiding plates 42 respectively arranged on both sides of the conveying roller path 40.

[0057] The conveying roller path 40 includes a plurality of conveying rollers 400 arranged side by side. The power component 41 includes sprockets 410 arranged at one end of each conveying roller 400, and an annular transmission chain 411 installed on the upper support platform a0 and matching with the sprockets 410. The bin X passes through between the two first guiding plates 42 along the conveying roller path 40. Such an arrangement ensures the stable conveyance of the bin along the conveying roller path and prevents it from falling.

[0058] Meanwhile, the end parts of the two first guiding plates 42 are respectively bent towards both sides. Such an arrangement facilitates the bin to enter the conveying roller path.

[0059] In this example, the bin tipping mechanism 5 is arranged in the bin tipping area q2 and installed on the cross support 32, and the bin tipping mechanism 5 includes a bin moving unit 50 and a bin tipping unit 51.

[0060] Specifically, the bin moving unit 50 includes a moving seat 500 and a first driving assembly 501.

[0061] Specifically, the moving seat 500 is movably arranged on the cross support 32, and the moving seat 500 includes a seat body c0 parallel to the cross support 32 and two split parts c1 connected to both ends of the seat body c0. Among them, the two split parts c1 correspond to the two side supports 31 one by one, and a tipping area q4 is formed between the seat body c0 and the two split parts c1.

[0062] For the convenience of implementation, two first guide rails g1 are also connected in parallel at the bottom of the cross support 32. Each of the first guide rails g1 is fixedly connected to the bottom of the two cross supports 32 from both ends and is arranged parallel to the bin conveyor belt 4. Two first sliders h1 are fixedly connected to the seat body c0 and are slidably connected to the corresponding first guide rails g1 through the two first sliders h1. Such an arrangement ensures the stable movement of the moving seat and improves the conveyance reliability.

[0063] Specifically, the first driving assembly 501 includes a lead screw d0 arranged in parallel between the two first guide rails g1, a first fitting d1 sleeved on the lead screw d0, and a first motor d2 connected to the lead screw d0.

[0064] The first motor d2 is fixedly connected to one cross support 32, and the output end of the first motor d2 is connected to one end of the lead screw d0 through a belt and drives the lead screw d0 to rotate around its own axis.

[0065] The first mating part d1 is fixedly connected to the seat body c0, and a thread matching the lead screw d0 is formed on the inner wall of the first mating part d1. As the lead screw d0 rotates, the first mating part d1 drives the seat body c0 to reciprocate along the lead screw d0. With this arrangement, the lead screw drive is adopted, and the transmission is stable and reliable.

[0066] Combined Figures 6 to 8 As shown, the hopper flipping unit 51 includes a flipping seat 510, a second driving assembly 511, and a gate assembly 512.

[0067] In this example, a positioning cavity q5 for positioning the hopper X is formed on the flipping seat 510, and a discharge port k1 is also provided on the flipping seat 510 opposite to the opening of the hopper X in the positioning cavity q5. One side of the positioning cavity q5 is open and forms an inlet k2. The AGV cart transports the hopper X from the inlet k2 horizontally into the positioning cavity q5. With this arrangement, the structure is simple, which facilitates the AGV cart to transfer the received hopper into the positioning cavity.

[0068] Specifically, the flipping seat 510 includes two parallel side plates e0, a top plate e1 and a bottom plate e2 horizontally arranged between the two side plates e0, and a limiting plate e3 connected between the two side plates e0 and perpendicular to the top plate e1 and the bottom plate e2. A positioning cavity q5 is formed among the two side plates e0, the top plate e1, the bottom plate e2, and the limiting plate e3, and the inlet k2 is opposite to the limiting plate e3. With this arrangement, the hopper is prevented from falling during flipping by the shielding of the limiting plate, improving the safety of the equipment.

[0069] Specifically, the two side plates e0 are arranged in one-to-one correspondence with the two split parts c1, and each side plate e0 is rotatably connected to the corresponding split part c1 through a rotating shaft s at the middle part.

[0070] Specifically, the top plate e1 is fixedly connected to the tops of the two side plates e0; there are two bottom plates e2, and the two bottom plates e2 are respectively fixedly connected to the bottoms of the two side plates e0. When the hopper X enters the positioning cavity q5, the hopper X is respectively supported on the two bottom plates e2 from both sides of the bottom of the hopper; the limiting plate e3 is fixedly connected to one side of the two side plates e0 away from the inlet k2.

[0071] At the same time, a discharge port k1 is formed with an interval between the top plate e1 and the limiting plate e3, and the flipping seat 510 further includes a second guiding plate e4 arranged on the limiting plate e3. When the hopper X is tilted, the bar stock can roll down from the discharge port k1 along the second guiding plate e4. With this arrangement, it is ensured that the bar stock can fall orderly on the feeding platform of the centerless grinder.

[0072] Specifically, the second guide plate e4 extends obliquely from the top of the limit plate e3 to the upper left, and when the flipping seat 510 rotates clockwise around the center line direction of the rotating shaft s to the discharging state, the second guide plate e4 is arranged parallel to the feeding platform of the centerless grinder (not shown in the figure, but not difficult to imagine). This setting plays a buffering role for the rolling bar stock and avoids breakage caused by impact.

[0073] In this example, the second driving assembly 511 includes a motor bracket f1 and a second motor f2. The second motor f2 is arranged outside a split body c1, and the output shaft of the second motor f2 is fixedly connected to the corresponding rotating shaft s (not shown in the figure, but not difficult to imagine); the motor bracket f1 is fixedly connected to the corresponding split body c1 and sleeved on the output shaft of the second motor f2. This setting plays a protective role for the output shaft.

[0074] In this example, the gate assembly 512 is adjustably arranged at the discharge port k1. When the material box X is flipped to the discharging state, the gate assembly 512 opens the discharge port k1, and as the material box X resets, the gate assembly closes the discharge port k1.

[0075] Specifically, the gate assembly 512 includes a gate m0 movably arranged on the top plate e1 and a driving component m1 connected to the gate m0. The driving component m1 drives the gate m0 to fit against the inner side of the second guide plate e4, and the discharge port k1 is closed. The driving component m1 drives the gate m0 away from the second guide plate e4, and the discharge port k1 is open. This setting effectively avoids the bar stock from falling during the flipping process of the material box and improves the reliability of the equipment.

[0076] The gate m0 is horizontally arranged, and the width of the gate m0 is greater than the width of the discharge port k1. When one side of the gate m0 abuts against the inner side of the second guide plate e4, the other side is located above the top plate e1.

[0077] For the convenience of implementation, a second guide rail g2 is fixedly connected to the gate m0. There are two second guide rails g2 and they are arranged side by side along the length direction of the gate m0, and each second guide rail g2 is perpendicular to the gate m0.

[0078] At the same time, a sliding seat e10 matching each second guide rail g2 is fixedly connected to the top plate e1. This setting ensures stable opening and closing of the gate and improves reliability.

[0079] Specifically, the driving component m1 includes a rack m11, a gear m12, and a third motor m13. The rack m11 is fixedly arranged on the top of the gate m0 and extends horizontally along the width direction of the top plate e1. The third motor m13 is fixedly arranged on the top plate e1, and the gear m12 is fixedly arranged on the output shaft of the third motor m13 and meshes with the rack m11.

[0080] For convenient implementation, the driving component m1 further includes two support seats m14 fixedly arranged side by side along the length direction of the output shaft of the third motor m13 on the top plate e1. The output shaft of the third motor m13 sequentially passes through the two support seats m14 through bearings, and the gear m12 is located between the two support seats m14. With such a setting, the support performance is improved, and the deformation and damage of the output shaft of the third motor are prevented.

[0081] In this example, this embodiment further includes a sensing component 513 arranged on the rotating shaft s and communicating with the gate assembly 512.

[0082] Specifically, the sensing component 513 includes a connection disk n0 fixedly arranged on the split body c1 away from the second motor f2, two sensors n1 fixedly connected to the connection disk n0 and distributed at intervals around the center line of the corresponding rotating shaft s, and an inductor n2 fixedly arranged at the outer end of the rotating shaft s. The rotating shaft s passes through the connection disk n0 from the outer end. When flipping, the inductor n2 rotates from one of the two sensors n1 to the other along with the rotation of the rotating shaft s. With such a setting, the flipping position of the material box can be monitored in real time, and the gate assembly can be opened and closed in time to discharge the material outlet.

[0083] In this example, the material box transfer mechanism 7 is arranged to move up and down between the transfer end of the material box conveyor belt 4 and the receiving end of the empty box conveyor belt 6, and it includes a transfer seat 70, a transfer conveyor belt 71 arranged on the transfer seat 70, and a third driving component 72. The third driving component 72 drives the transfer seat 70 to move up and down. As the transfer seat 70 moves upward, the transfer conveyor belt 71 can extend between the two bottom plates e2 and be connected to the material box conveyor belt 4. As the transfer seat 70 moves downward, the transfer conveyor belt 71 can be connected to the empty box conveyor belt 6. That is to say, under the co-directional transmission of the transfer roller path and the transfer conveyor belt, the material box is transferred from the material box conveyor belt to the transfer seat; similarly, the material box can be output from the transfer seat to the empty box conveyor belt.

[0084] For convenient implementation, there are two groups of transfer conveyor belts 71 and they are located on both sides. The material box X is correspondingly supported on the two groups of transfer conveyor belts 71 from both sides at the bottom.

[0085] At the same time, the material box transfer mechanism 7 further includes a synchronizing shaft 73 connected between the two groups of transfer conveyor belts 71. With such a setting, the material box can be stably supported on the two groups of transfer conveyor belts; at the same time, the synchronous transmission of the two groups of transfer conveyor belts is realized, and the stability when receiving or outputting the material box is improved.

[0086] In this example, the third driving component 72 includes a fixing frame 720 fixedly arranged on the side of the transfer seat 70 away from the material box conveyor belt 4, two third guide rails 721 arranged side by side and connected to the fixing frame 720, and a power unit 722.

[0087] Specifically, the transfer base 30 is slidably connected to two third guide rails 721 through a second slider h2. This setting has a simple structure and is convenient for installation and implementation.

[0088] Specifically, the actuator 722 includes a lead screw p0 disposed in parallel between two third guide rails 721, a fourth motor p1 connected to one end of the lead screw p0, and a second fitting (not shown in the figure but easy to conceive) sleeved on the lead screw p0. The fourth motor p1 drives the lead screw p0 to rotate about its own axis through a belt, and the fitting is also fixedly connected to the transfer base 30 and drives the transfer base 30 to move up and down. This setting has reliable transmission and is convenient for controlling the movement of the transfer base.

[0089] In addition, this embodiment further includes a touch screen 8 fixedly connected to the side bracket 31 for terminal operation, and a three-color light column 9 installed on the cross bracket 32 for indicating the working state of the AGV cart.

[0090] In summary, the implementation process of this embodiment is as follows:

[0091] S1. Bin Transfer

[0092] The AGV cart moves to the stock preparation platform, so that the bin conveyor belt 4 is docked with the transfer track of the stock preparation platform. The bin X is transferred from the transfer track of the stock preparation platform to the bin conveyor belt 4. Each time, the bin conveyor belt 4 receives two bins X from the stock preparation platform and, according to the system instruction, the AGV cart moves along the preset track on the ground to one side of the feeding platform of the centerless grinder.

[0093] S2. Transfer the Bin

[0094] Drive the moving base 500 to move to one end of the first guide rail g1 close to the bin conveyor belt 4, and drive the inlet k2 of the flipping base 510 to face the output end of the bin conveyor belt 4. The transfer base 70 moves upward, and the transfer conveyor belt 71 extends between the two bottom plates e2 and is connected to the bin conveyor belt 4. The bin conveyor belt 4 laterally transfers a bin X to the transfer conveyor belt 71. The bin X enters the positioning cavity q5 from the inlet k2. At this time, the inductor n2 is docked with a sensor n1, the gate m0 is attached to the inner side of the second guide plate e4, and the discharge port k1 remains closed.

[0095] S3. Empty the Bin

[0096] Drive the transfer base 30 to move downward so that the transfer conveyor belt 71 exits the flipping base 510, and then drive the moving base 500 to move along the first guide rail g1 to above the feeding platform. At this time, drive the flipping base 510 to flip so that the inductor n2 is docked with another sensor n1, the gate m0 moves away from the second guide plate e4 and opens the discharge port k1. The bar stock in the bin X rolls down along the second guide plate e4 onto the feeding platform, and the bin X becomes an empty bin.

[0097] S4. Exit the empty bin

[0098] The moving seat 500, the flipping seat 510, and the gate m0 are reset respectively. The transfer seat 30 moves upward and makes the transfer conveyor belt 71 extend between the two bottom plates e2. The empty bin is erected on the transfer conveyor belt 71 from the bottom. Then the moving seat 500 drives the flipping seat 510 to move along the first guide rail g1 again, so that the transfer conveyor belt 71 and the empty bin are disengaged from the positioning cavity q5. At this time, the transfer seat 30 is driven to move downward, so that the transfer conveyor belt 71 is connected with the empty bin conveyor belt 6, and the empty bin is laterally transferred from the transfer conveyor belt 71 to the empty bin conveyor belt 6.

[0099] Therefore, this embodiment has the following advantages:

[0100] 1. The AGV cart can automatically flip the bin to dump the bar stock, with stable flipping, ensuring that all the bar stock falls on the feeding platform, reducing labor intensity and labor costs;

[0101] 2. It can realize the automatic exit of the empty bin, facilitating the AGV cart to perform the next feeding operation in a timely manner, effectively improving production efficiency, and the opening direction of the empty bin remains unchanged when it exits, facilitating the next material preparation;

[0102] 3. During the flipping process of the bin, it can ensure that the discharge port is closed, avoiding dropping midway, and ensuring that all the bar stock falls on the feeding platform, with high equipment reliability;

[0103] 4. Through the setting of the second guide plate, it plays a buffering role for the rolling bar stock, avoiding damage caused by impact;

[0104] 5. Through the setting of the sensing component, it can monitor the flipping position of the bin in real time, and realize the timely opening and closing of the discharge port by the gate component;

[0105] 6. The bin conveyor belt can pick up two bins at a time, effectively improving the feeding efficiency.

[0106] The above has made a detailed description of the present invention, aiming to enable those skilled in this field to understand the content of the present invention and implement it. However, it cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims

1. An automatic unloading and box-returning structure applicable to an AGV vehicle, characterized in that: It includes a frame, a bin tipping mechanism, an empty bin conveyor belt disposed below the bin tipping mechanism, and a bin transfer mechanism capable of transferring the bin between the bin tipping mechanism and the empty bin conveyor belt. The bin tipping mechanism includes a bin moving unit and a bin flipping unit. The bin moving unit includes a moving seat movably disposed on the frame and a first driving assembly connected to the moving seat. A flipping area for the bin to flip is formed on the moving seat. The bin flipping unit includes a flipping seat, a second driving assembly, and a gate assembly. The flipping seat is rotatably connected in the flipping area and forms a positioning cavity for positioning the bin. An outlet is further provided on the flipping seat opposite to the opening of the bin in the positioning cavity. The second driving assembly is connected to the flipping seat and drives the flipping seat to flip. The gate assembly is adjustably disposed at the outlet. When the bin flips to the tipping state, the gate assembly opens the outlet. When the bin resets, the gate assembly closes the outlet. The bin transfer mechanism includes a transfer seat, a transfer conveyor belt disposed on the transfer seat, and a third driving assembly. The third driving assembly drives the transfer seat to move up and down.

2. The automatic unloading and box-retreating structure applicable to the AGV trolley according to claim 1, wherein: The tipping and bin-removing structure further includes a bin conveyor belt, and the bin transfer mechanism can transfer the bin between the bin conveyor belt, the bin tipping mechanism, and the empty bin conveyor belt.

3. The automatic discharging and box-retreating structure applicable to the AGV cart according to claim 2, wherein: The bin conveyor belt and the empty bin conveyor belt are arranged parallel to each other vertically, and the output end of the bin conveyor belt and the receiving end of the empty bin conveyor belt are located on the same side.

4. The automatic discharging and box-retreating structure applicable to the AGV trolley according to claim 3, characterized in that: The bin conveyor belt and the empty bin conveyor belt have the same structure. The bin conveyor belt includes a horizontally arranged conveyor roller path and two first guide plates respectively disposed on both sides of the conveyor roller path. The bin passes through between the two first guide plates along the conveyor roller path.

5. The automatic emptying and box-returning structure for an AGV cart according to claim 2, characterized in that: The frame includes two side brackets on both sides, a cross bracket horizontally arranged between the two side brackets, and a first guide rail fixedly disposed at the bottom of the cross bracket. The first guide rail is arranged parallel to the bin conveyor belt. The moving seat is slidably connected to the first guide rail, and the first driving assembly drives the moving seat to reciprocate along the first guide rail.

6. The automatic emptying and box-returning structure applicable to the AGV trolley according to claim 5, wherein: The flipping seat includes two side plates rotatably connected to the moving seat through a rotating shaft, a top plate and a bottom plate horizontally arranged between the two side plates, a limiting plate connected between the two side plates and perpendicular to the top plate and the bottom plate, and a second guide plate disposed on the limiting plate. A positioning cavity is formed among the two side plates, the top plate, the bottom plate, and the limiting plate. The positioning cavity is open on the side away from the limiting plate to form an inlet. The bin laterally moves through the inlet from the bin conveyor belt and enters the positioning cavity. A gap is provided between the top plate and the limiting plate to form the outlet. The second guide plate extends outward from one side of the outlet.

7. The automatic discharging and box-retreating structure applicable to an AGV cart according to claim 6, characterized in that: The gate assembly includes a gate, a second guide rail fixedly arranged on the top plate, and a driving component connected to the gate. The gate is slidably arranged on the second guide rail, and the driving component drives the gate to fit against the inner side of the second guide plate along the second guide rail, so that the discharge port is closed. The driving component drives the gate to move away from the second guide plate along the second guide rail, and the discharge port is opened.

8. The automatic discharging and box-retreating structure applicable to the AGV trolley according to claim 6, characterized in that: The hopper tilting unit further includes a sensing component arranged on the rotating shaft and communicating with the gate assembly. The sensing component includes a connecting disc fixedly arranged on the moving seat, two sensors fixedly connected to the connecting disc and spaced apart around the center line of the corresponding rotating shaft, and an inductor fixedly arranged on the rotating shaft. During tilting, the inductor rotates from one of the two sensors to the other.

9. The automatic material dumping and box returning structure applicable to the AGV trolley according to claim 6, wherein: There are two bottom plates which are respectively connected to the bottoms of the two side plates. As the transfer seat moves upward, the transfer conveyor belt can extend between the two bottom plates and be connected to the hopper conveyor belt. As the transfer seat moves downward, the transfer conveyor belt can be connected to the empty box conveyor belt.

10. The automatic material discharging and box retreating structure applicable to the AGV trolley according to claim 1, characterized in that: Before the empty box is taken out, the empty box after the bar stock is emptied is tilted, and the opening direction of the empty box remains the same as that before tilting.

Images