Automatic discharging equipment for power and free chain conveying system

Abstract

The invention relates to the technical field of material conveying, in particular to automatic discharging equipment for a power and free chain conveying system, which comprises a guide rail, a plurality of tray assemblies, a transmission chain and an automatic clamping jaw, the plurality of tray assemblies are slidably arranged on the guide rail, the transmission chain is arranged on the guide rail in a transmission manner, and the transmission chain can rotate around the guide rail in the circumferential direction; and a first matching form and a second matching form are arranged between the tray assembly and the transmission chain. The tray assembly is arranged, the tray assembly comprises the vehicle frame, the side rods, the rolling wheels and the exchange units, after the tray assembly moves to a power and free interval, the positions of the rolling wheels on the side rods are exchanged through the exchange units, and therefore the equipment structure is optimized; loading force borne by the frame is balanced, the abrasion degree difference of the rollers on the left side and the right side of the frame is prevented from being increased, and the service life of the tray assembly is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of material conveying, and particularly to an automatic blanking device for an accumulation conveyor system. Background Art

[0002] An accumulation conveyor system is a special material handling device that combines chain drive and cargo accumulation functions, and can temporarily store or buffer products without affecting subsequent workstations. The main parts of the accumulation conveyor system include a chain, a tray, a guide rail, a driving device, a control system, and an accumulation system. The chain is responsible for transmitting power and supporting the loading unit, usually made of high-strength alloy steel, with good wear resistance and fatigue resistance. The tray is responsible for transporting materials, and the guide rail is used to guide the chain and the tray to move along a predetermined path to ensure the smooth and reliable material transportation process. The driving device provides power for the entire system, and the control system is used to monitor and manage the operating state of the system, such as speed regulation, fault diagnosis, etc. The accumulation system is used to flexibly adjust the working modes of each section according to the actual working conditions to achieve the effective accumulation and release of materials.

[0003] The tray includes a trolley and an automatic gripper. The rollers of the trolley are in guiding contact with the guide rail, and the trolley carries the automatic gripper to move along the preset trajectory of the guide rail. Since the materials clamped by the automatic gripper may be special-shaped materials (materials with the center of gravity not at the geometric center or non-axisymmetric geometric shapes), this will cause unbalanced loads on the left and right sides of the trolley during rolling. In one program cycle, this unbalanced load always exists, which will lead to an increasing difference in the wear degree of the rollers on the left and right sides of the tray trolley, thereby reducing the service life of the tray trolley. Summary of the Invention

[0004] Based on this, in view of the problems existing in current material handling equipment, it is necessary to provide an automatic blanking device for an accumulation conveyor system to solve the problem that when the tray clamps special-shaped materials through an automatic gripper, the load sizes on the left and right rollers of the trolley are different, resulting in an increasing difference in the wear degree of the rollers on the left and right sides of the trolley.

[0005] The above object is achieved by the following technical solutions: An automatic blanking device for an accumulation conveyor system includes: A guide rail; A tray assembly, there are multiple tray assemblies, and the multiple tray assemblies are slidably arranged on the guide rail; A drive chain, the drive chain is arranged on the guide rail in a driving manner, the drive chain can rotate circumferentially around the guide rail, and there is a first matching form and a second matching form between the tray assembly and the drive chain. In the first matching form, the tray assembly rotates synchronously with the drive chain, and in the second matching form, the tray assembly rotates relative to the drive chain; Automatic grippers, there are multiple automatic grippers, and the multiple automatic grippers are connected one by one with the multiple tray assemblies; The tray assembly comprises a frame, a trolley chain, a trolley sprocket, a center sprocket, a side rod, a roller and a replacement unit. There are four trolley sprockets and they are divided into two groups, each group has two trolley sprockets, the two groups of trolley sprockets are spaced front and back and rotatably arranged on the frame, the two trolley sprockets in each group are spaced left and right and coaxially arranged, there are two trolley chains, the two trolley chains are transmission-connected with the two groups of trolley sprockets, the center sprocket is located between the two trolley sprockets spaced left and right, and the center sprocket is coaxially arranged with the trolley sprocket, the center sprocket is transmission-connected with the transmission chain, and the center sprocket can rotate around its axis, there are multiple side rods, the multiple side rods are divided into two groups, the two groups of side rods are spaced left and right, and the multiple side rods in each group are equally spaced and arranged on the inner side of the trolley chain on the corresponding side, there are multiple rollers and they are divided into multiple groups, the multiple groups of rollers are alternately arranged left and right and rotatably arranged on the outside of the side rod on the corresponding side, the rollers are in rolling contact with the guide rails, and the replacement unit is arranged on the frame, and the replacement unit is used to make the multiple groups of rollers exchange positions between the two corresponding left and right groups of side rods.

[0006] In one of the embodiments, the exchange unit includes an intermediate rod, a sliding block, a first electric telescopic rod, a double-headed electric telescopic rod, a toggle block and an electromagnetic block, the sliding block is slidably connected to the frame, and the sliding block can slide linearly in the front-to-back direction, there are two electromagnetic blocks, and the two electromagnetic blocks are arranged at intervals on the upper part of the sliding block in the front-to-back direction, the first electric telescopic rod can rotate around its axis, the first electric telescopic rod is rotatably arranged on the upper part of the sliding block and the axis of the first electric telescopic rod passes through the center point of the line connecting the two electromagnetic blocks in the front-to-back direction, and the first electric telescopic rod can rotate around its axis, the axis of the double-headed electric telescopic rod is perpendicular to the axis of the first electric telescopic rod, and the center point of the double-headed electric telescopic rod is located on the axis of the first electric telescopic rod, and there are two toggle blocks and they are respectively arranged at both ends of the double-headed electric telescopic rod; A slot is provided at the upper end of the electromagnetic block, and the middle rod is movably placed in the slot; When the axis of the middle rod coincides with the axis of the side rod in the left-right direction and the electromagnetic block is de-energized, the middle rod can be moved out of the slot and abut against the left and right side rods coaxially; When the axis of the middle rod coincides with the axis of the side rod in the left-right direction and the electromagnetic block is energized, the middle rod can be reset and moved into the slot.

[0007] In one embodiment, the end surface of the side rod away from the trolley chain is an elliptical surface, and the axis of the elliptical surface is inclined downward; The end faces at both ends of the middle rod are also elliptical surfaces, and the end faces at both ends of the middle rod can be in surface contact with the end face of the side rod away from the trolley chain.

[0008] In one embodiment, an annular groove is provided on the outer peripheral surface of the roller; The end of the toggle block is provided with a toggle protrusion, which is matched with the annular groove.

[0009] In one embodiment, the exchange unit also includes a first motor, a driving screw and a guide rod, the first motor is arranged on the frame, the output end of the first motor is fixedly connected to the driving screw, the driving screw is threadedly connected to the sliding block, and the axis of the driving screw extends in the front-to-back direction, the two ends of the guide rod are connected to the frame, and the guide rod is slidably connected to the sliding block, and the axis of the guide rod is parallel to the axis of the driving screw.

[0010] In one embodiment, a trigger is provided at the rear end of the frame; The tray assembly also includes a brake unit, which is disposed in the frame and cooperates with the central sprocket, and the brake unit is also connected to the trigger signal; The brake unit is configured to restrict the central sprocket from rotating about its own axis when the trigger is not triggered; The brake unit is also configured to remove the restriction on the central sprocket from rotating around its own axis when the trigger is triggered.

[0011] In one embodiment, an automatic unloading device for a stacking chain conveying system also includes a driving sprocket and a driven sprocket. The driving sprocket and the driven sprocket have the same diameter and are spaced front to back. The driving sprocket can rotate around its own axis. Both the driving sprocket and the driven sprocket are connected to the transmission chain.

[0012] In one of the embodiments, the front and rear ends of the frame are further provided with arc-shaped plates, and the diameter of the arc-shaped plates is matched with the diameter of the driving sprocket.

[0013] In one embodiment, the first magnets are embedded at both ends of the middle rod, and the second magnets are embedded at one end of the side rod away from the frame; The magnetic properties of the sides of the first magnet and the second magnet facing each other are opposite.

[0014] In one of the embodiments, a plurality of rigid support frames are provided on the inner side of the guide rail, and the plurality of rigid support frames are arranged at intervals along the length direction of the guide rail.

[0015] The beneficial effects of the present invention are: The present invention provides a pallet assembly, which includes a frame, side rods, rollers and a replacement unit. After the pallet assembly moves to the accumulation interval, the rollers on the side rods are replaced by the replacement unit, thereby optimizing the equipment structure and balancing the load force borne by the frame, which is beneficial to preventing the difference in wear degrees of the rollers on the left and right sides of the frame from becoming larger, so as to extend the service life of the pallet assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is an overall schematic diagram of an automatic unloading device for a power-and-free chain conveying system of the present invention; Figure 2 It is a structural schematic diagram of a pallet assembly in an automatic unloading device for a power-and-free chain conveying system of the present invention; Figure 3 It is a schematic diagram of the installation and matching of side rods and rollers in an automatic unloading device for a power-and-free chain conveying system of the present invention; Figure 4 It is a schematic diagram of the cooperation between rollers and guide rails in an automatic unloading device for a power-and-free chain conveying system of the present invention; Figure 5 It is a structural schematic diagram of a replacement unit in an automatic unloading device for a power-and-free chain conveying system of the present invention; Figure 6 It is a schematic diagram of a first state of a double-headed electric telescopic rod of an automatic unloading device for a power-and-free chain conveying system of the present invention; Figure 7 The present invention is a schematic diagram of a second working state of a double-headed electric telescopic rod in an automatic unloading device for a power-and-free chain conveying system.

[0017] in: 100, guide rail; 110, rigid support frame; 200, tray assembly; 210, frame; 220, trolley chain; 230, trolley sprocket; 240, center sprocket; 250, side rod; 260, roller; 261, annular groove; 270, exchange unit; 271, middle rod; 272, sliding block; 273, first electric telescopic rod; 274, double-head electric telescopic rod; 275, toggle block; 2751, toggle protrusion; 276, electromagnetic block; 2761, slot; 277, first motor; 278, drive screw; 279, guide rod; 280, Trigger; 290, curved plate; 300, transmission chain; 310, driving sprocket; 320, driven sprocket; 400. Automatic gripper. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0019] The serial numbers assigned to components in this text, such as "first", "second", etc., are only used to distinguish the described objects and do not have any sequential or technical meaning. The terms "connected" and "coupled" as used in this application, unless otherwise specifically stated, both include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0020] In the present invention, unless otherwise clearly specified and limited, 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 be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height 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 has a lower horizontal height than the second feature.

[0021] As Figures 1-7As shown in the figure, an automatic blanking device for an accumulation conveyor system includes a guide rail 100, a pallet assembly 200, a driving chain 300, and an automatic gripper 400. There are multiple pallet assemblies 200, and the multiple pallet assemblies 200 are slidably arranged on the guide rail 100. The driving chain 300 is arranged on the guide rail 100 in a driving manner, and the driving chain 300 can rotate circumferentially around the guide rail 100. There is a first matching form and a second matching form between the pallet assembly 200 and the driving chain 300. In the first matching form, the pallet assembly 200 rotates synchronously with the driving chain 300. In the second matching form, the pallet assembly 200 rotates relative to the driving chain 300. There are multiple automatic grippers 400, and the multiple automatic grippers 400 are connected to the multiple pallet assemblies 200 in a one-to-one correspondence. The pallet assembly 200 includes a vehicle frame 210, a trolley chain 220, a trolley sprocket 230, a central sprocket 240, a side rod 250, a roller 260, and a swapping unit 270. There are four trolley sprockets 230, which are divided into two groups, with two in each group. The two groups of trolley sprockets 230 are spaced apart front and back and rotatably arranged on the vehicle frame 210. The two trolley sprockets 230 in each group are spaced apart left and right and coaxially arranged. There are two trolley chains 220, and the two trolley chains 220 are drivingly connected to the two groups of trolley sprockets 230. The central sprocket 240 is located between the two trolley sprockets 230 spaced apart left and right, and the central sprocket 240 is coaxially arranged with the trolley sprocket 230. The central sprocket 240 is drivingly connected to the driving chain 300, and the central sprocket 240 can rotate around its axis. There are multiple side rods 250, which are divided into two groups. The two groups of side rods 250 are spaced apart left and right. The multiple side rods 250 in each group are equidistantly arranged inside the trolley chain 220 on the corresponding side. There are multiple rollers 260, which are divided into multiple groups. The multiple groups of rollers 260 are alternately arranged left and right and rotatably arranged outside the side rod 250 on the corresponding side. The roller 260 is in rolling contact with the guide rail 100. The swapping unit 270 is arranged on the vehicle frame 210. When the pallet assembly 200 and the driving chain 300 are in the second matching form, the swapping unit 270 is used to make the multiple groups of rollers 260 swap positions between the left and right two groups of side rods 250 corresponding to them.

[0022] Before the pallet assembly 200 moves to the accumulation area, the pallet assembly 200 and the driving chain 300 are in the first matching form. At this time, the pallet assembly 200 rotates synchronously with the driving chain 300. Under the driving action of the driving chain 300, after the automatic gripper 400 grips the material in the loading area, it moves synchronously with the pallet assembly 200 towards the accumulation area. After the pallet assembly 200 moves to the accumulation area, the matching form between the pallet assembly 200 and the driving chain 300 is switched to the second matching form. At this time, the pallet assembly 200 rotates relative to the driving chain 300, that is, the driving cooperation between the pallet assembly 200 and the driving chain 300 is disengaged. The pallet assembly 200 temporarily stays in the accumulation area, and the driving chain 300 continues to rotate circumferentially.

[0023] After the tray assembly 200 and the drive chain 300 are in the second mating form, the swapping unit 270 is used to swap the positions of the plurality of rollers 260 between the left and right sets of side rods 250 corresponding to them. Thus, the roller 260 rotatably connected to the left side rod 250 is swapped to the right side rod 250 through the swapping unit 270, and the roller 260 rotatably connected to the right side rod 250 is swapped to the left side rod 250 through the swapping unit 270, so that the installation positions of the rollers 260 are swapped between the left and right sides of the vehicle frame 210. During the operation of the accumulation chain conveying system, whenever the tray assembly 200 moves to the accumulation section, the swapping unit 270 swaps the left and right positions of the rollers 260 installed on its side rods 250 once, thereby preventing the wear degree difference between the rollers 260 on the left and right sides of the vehicle frame 210 from becoming larger. Therefore, the equipment structure is optimized, and the load acting force borne by the vehicle frame 210 is balanced, so as to extend the service life of the tray assembly 200.

[0024] When the residence time of the tray assembly 200 in the accumulation section reaches the set duration of the accumulation program, the tray assembly 200 and the drive chain 300 are switched to the first mating form. At this time, the drive chain 300 continues to drive the tray assembly 200 to rotate circumferentially. Under the driving action of the drive chain 300, the automatic gripper 400 follows the tray assembly 200 and synchronously moves from the accumulation section to the unloading section. After the automatic gripper 400 reaches the unloading section, the automatic gripper 400 automatically places the clamped material at the designated position. Then, under the driving action of the drive chain 300, the automatic gripper 400 follows the tray assembly 200 and continues to move to the loading section. After reaching the loading section, the automatic gripper 400 clamps the material again. This process repeats, and the material in the loading section is conveyed to the unloading section through the accumulation chain conveying system.

[0025] In a further embodiment, as Figures 3-7As shown, the exchange unit 270 includes an intermediate rod 271, a sliding block 272, a first electric telescopic rod 273, a double-headed electric telescopic rod 274, a toggle block 275 and an electromagnetic block 276. The sliding block 272 is slidably connected to the frame 210, and the sliding block 272 can slide linearly in the front-to-back direction. There are two electromagnetic blocks 276, and the two electromagnetic blocks 276 are arranged at intervals on the upper part of the sliding block 272 in the front-to-back direction. The first electric telescopic rod 273 can rotate around its axis. The first electric telescopic rod 273 is rotatably arranged on the upper part of the sliding block 272 and the axis of the first electric telescopic rod 273 passes through the center point of the line connecting the two electromagnetic blocks 276 in the front-to-back direction. The axis of the double-headed electric telescopic rod 274 is perpendicular to the first electric telescopic rod. The center point of the double-headed electric telescopic rod 274 is located on the axis of the first electric telescopic rod 273. There are two toggle blocks 275, which are respectively arranged at the two ends of the double-headed electric telescopic rod 274. A slot 2761 is provided at the upper end of the electromagnetic block 276. The middle rod 271 is movably placed in the slot 2761. When the electromagnetic block 276 is not energized and the axis of the middle rod 271 coincides with the axis of the side rod 250 in the left-right direction, the middle rod 271 can be moved out of the slot 2761 and coaxially abut against the left and right side rods 250. When the electromagnetic block 276 is energized and the axis of the middle rod 271 coincides with the axis of the side rod 250 in the left-right direction, the middle rod 271 can be reset and moved into the slot 2761.

[0026] It should also be noted that a trigger 280 is provided at the rear end of the frame 210, and the tray assembly 200 also includes a braking unit, which is disposed in the frame 210 and cooperates with the center sprocket 240. The braking unit is also connected to the trigger 280 by signal, and the braking unit is configured to limit the center sprocket 240 from rotating around its own axis when the trigger 280 is not triggered, and the braking unit is also configured to cancel the restriction on the center sprocket 240 from rotating around its own axis when the trigger 280 is triggered.

[0027] In the second cooperation form, in order to enable relative rotation between the transmission chain 300 and the pallet assembly 200, specifically, after the current pallet assembly 200 moves to the accumulation interval and the current pallet assembly 200 abuts against the trigger 280 of the pallet assembly 200 adjacent to and located in front of it, the trigger 280 corresponding to the pallet assembly 200 in front of it is triggered, and the braking unit of the current pallet assembly 200 cancels the restriction on the movement of the center sprocket 240 around its own axis after receiving the electrical signal. At this time, relative rotation is achieved between the transmission chain 300 and the pallet assembly 200, and the pallet assembly 200 no longer rotates synchronously with the transmission chain 300.

[0028] In the second matching form, under the transmission action of the transmission chain 300, the center sprocket 240 rotates around its own axis, and the center sprocket 240 drives the trolley sprocket 230 coaxially arranged therewith to rotate synchronously, and the trolley sprocket 230 drives the trolley chain 220 to transmit circumferentially, and the side rod 250 is arranged on the inner side of the trolley chain 220, so that the side rod 250 rotates synchronously with the trolley chain 220. When the trolley chain 220 rotates until the axis of the side rod 250 coincides with the axis of the middle rod 271 in the left and right directions, the electromagnetic block 276 takes When the power is turned off, the magnetic attraction force of the electromagnetic block 276 on the middle rod 271 disappears, and the two middle rods 271 are simultaneously moved out of the slots 2761 and coaxially abutted with the corresponding left and right side rods 250. Since the diameters of the side rods 250 and the middle rods 271 are the same, the side rods 250 can use the middle rods 271 as a "bridge" to exchange positions between the corresponding left and right side rods 250. Specifically, at this time, the sliding block 272 moves from front to back, so that the moving linear speed of the sliding block 272 adapts to the speed of the transmission chain 300. The moving linear speed is increased so that the sliding block 272 and the middle rod 271 and the side rod 250 connected coaxially remain relatively still. At the same time, the telescopic end of the first electric telescopic rod 273 extends outward and the first electric telescopic rod 273 rotates around its axis so that the toggle block 275 abuts against the roller 260. After the toggle block 275 abuts against the roller 260, the first electric telescopic rod 273 stops extending and continues to rotate. Next, the telescopic end of the double-headed electric telescopic rod 274 shortens and then extends adaptively. At this time, the left side The roller 260 on the rod 250 is subjected to the pushing force from the toggle block 275 and moves along the axis of the side rod 250 from the current left side rod 250 to the coaxial right side rod 250 with the middle rod 271 as a "bridge". At the same time, the roller 260 on the right side rod 250 is subjected to the pushing force from the toggle block 275 and moves along the axis of the side rod 250 with the middle rod 271 as a "bridge" from the current right side rod 250 to the coaxial left side rod 250, so that the position of the roller 260 can be swapped.

[0029] After the current roller 260 position exchange is completed, the electromagnetic block 276 is energized. Under the magnetic attraction of the electromagnetic block 276, the two intermediate rods 271 are reset and moved into the card slot 2761 at the same time. Next, the sliding block 272 is reset, and the first electric telescopic rod 273 and the double-headed electric telescopic rod 274 are reset. When the intermediate rod 271 coincides with the axis of the other side rods 250 in the left and right directions again (at this time, the side rod 250 opposite to the previous installation position of the roller 260 should be selected), next, the telescopic end of the first electric telescopic rod 273 extends outward and the first electric telescopic rod 273 rotates in the opposite direction around its axis so that the toggle block 275 abuts against the roller 260 on the left. After the toggle block 275 abuts against the roller 260, the first electric telescopic rod 273 stops extending and continues to rotate in the opposite direction. Next, the telescopic end of the double-headed electric telescopic rod 274 contracts to exchange the position of the roller 260 left and right. Next, the above-mentioned procedure is repeated so that the positions of all the rollers 260 are switched left and right.

[0030] In the initial state, the axis of the double-headed electric telescopic rod 274 remains vertical and is at the maximum extended length.

[0031] It should be added that, in order to make the middle rod 271 move out of the slot 2761 and coaxially abut against the side rod 250, specifically, first magnets are embedded at both ends of the middle rod 271, and a second magnet is embedded at one end of the side rod 250 away from the frame 210, and the magnetism of the sides facing each other of the first magnet and the second magnet is opposite. When the electromagnetic block 276 is de-energized, the electromagnetic block 276 loses its magnetic attraction force on the middle rod 271. At this time, under the magnetic attraction of the second magnet in the side rod 250, the middle rod 271 is coaxially connected with the side rod 250 as a whole, so that the roller 260 can use the middle rod 271 as a "bridge" to switch positions between the left and right side rods 250.

[0032] It should be noted that the end face of the side rod 250 away from the trolley chain 220 is an elliptical surface, the axis of the elliptical surface is inclined downward, and the end faces of the middle rod 271 are also elliptical surfaces, and the end faces of the middle rod 271 can be in surface contact with the end face of the side rod 250 away from the trolley chain 220. This is set up to guide and center with the help of the elliptical surface, when the middle rod 271 moves slightly along its axis, the middle rod 271 and the two side rods 250 can still be connected as one, so that the roller 260 can use the middle rod 271 as a "bridge" to switch positions between the left and right side rods 250.

[0033] It should also be noted that in order to enable the first electric telescopic rod 273 to rotate around its axis, specifically, a gear ring (not shown in the figure) can be coaxially sleeved on the outside of the first electric telescopic rod 273, and a driving motor (not shown in the figure) is set on the upper part of the sliding block 272, so that the output end of the driving motor is fixedly connected to a gear (not shown in the figure), and the gear is meshed with the gear ring, so that the rotation of the driving motor drives the gear ring to rotate, and the gear ring drives the fixed end of the first electric telescopic rod 273 to rotate, so that the first electric telescopic rod 273 rotates around its own axis.

[0034] It can be understood that by providing the roller 260 instead of the traveling wheel in the prior art, when the pallet assembly 200 is stationary (for example, when the pallet assembly 200 enters the accumulation interval), the circumferential transmission driving roller 260 of the transmission chain 300 rotates and follows the revolution of the trolley chain 220, which can effectively solve the problem of the large resistance of the pallet assembly 200 when the automatic gripper 400 is restarted when the load is large, thereby improving the smoothness of the operation of the pallet assembly 200.

[0035] In a further embodiment, the number of the side rods 250 in each group is two, and correspondingly, the number of the rollers 260 in each group is also two.

[0036] The advantage of such a configuration is that, by making the reset linear velocity value of the sliding block 272 twice the rotation linear velocity value of the transmission chain 300, after the sliding block 272 is reset, the intermediate rod 271 can coincide with the axis of the other side rods 250 in the left-right direction again, and the position of the roller 260 on the side rod 250 at this time is exactly opposite to the position of the roller 260 on the side rod 250 that previously coincided with the intermediate rod 271. Next, it is only necessary for the telescopic end of the first electric telescopic rod 273 to extend outward and the first electric telescopic rod 273 to rotate in the opposite direction around its axis so that the toggle block 275 abuts against the roller 260 on the left. After the toggle block 275 abuts against the roller 260, the first electric telescopic rod 273 stops extending and continues to rotate in the opposite direction. Next, the telescopic end of the double-headed electric telescopic rod 274 contracts, so that the position of the roller 260 can be swapped left and right. In this way, after the trolley chain 220 rotates one circle, the rollers 260 installed on the side rods 250 that rotate to coincide with the axis of the middle rod 271 are all swapped left and right, so that the rollers 260 can be evenly stressed and the wear difference is reduced.

[0037] In a further embodiment, Figure 7 As shown, an annular groove 261 is formed on the outer circumference of the roller 260 , and an end of the toggle block 275 is provided with a toggle protrusion 2751 , which is matched with the annular groove 261 .

[0038] The purpose of providing the toggle protrusion 2751 and the annular groove 261 is to increase the connection stability between the roller 260 and the toggle block 275 , so as to ensure that the toggle block 275 can toggle the roller 260 to move along the axis of the side rod 250 .

[0039] In a further embodiment, the exchange unit 270 also includes a first motor 277, a driving screw 278 and a guide rod 279. The first motor 277 is arranged on the frame 210, and the output end of the first motor 277 is fixedly connected to the driving screw 278. The driving screw 278 is threadedly connected to the sliding block 272, and the axis of the driving screw 278 extends in the front and rear directions. Both ends of the guide rod 279 are connected to the frame 210, and the guide rod 279 is slidably connected to the sliding block 272, and the axis of the guide rod 279 is parallel to the axis of the driving screw 278.

[0040] When in use, the first motor 277 is started, and the driving screw 278 is driven to rotate through the output end of the first motor 277, and the driving screw 278 drives the sliding block 272 to move forward and backward along the axis of the guide rod 279.

[0041] In a further embodiment, Figure 1 As shown, an automatic unloading device for a stacking chain conveying system also includes a driving sprocket 310 and a driven sprocket 320. The driving sprocket 310 and the driven sprocket 320 have the same diameter and are spaced front to back. The driving sprocket 310 can rotate around its own axis. Specifically, a second motor can be arranged on the outer side of the guide rail 100, so that the output end of the second motor is fixedly connected to the driving sprocket 310, and the driving sprocket 310 and the driven sprocket 320 are both connected to the transmission chain 300.

[0042] When in use, the second motor is started to drive the driving sprocket 310 to rotate, the driving sprocket 310 drives the transmission chain 300 to rotate, and the transmission chain 300 drives the driven sprocket 320 to rotate, thereby achieving stable circumferential transmission of the transmission chain 300.

[0043] In a further embodiment, Figure 2 As shown, arc plates 290 are further provided at the front and rear ends of the frame 210 , and the diameter of the arc plates 290 matches the diameter of the driving sprocket 310 .

[0044] The arc plate 290 is provided so that when the tray assembly 200 moves to the corner position of the guide rail 100, the arc plate 290 can cooperate with the guide of the corner area of ​​the guide rail 100 to enable the tray assembly 200 to move from the upper part of the guide rail 100 to the lower part of the guide rail 100 or from the lower part of the guide rail 100 to the upper part of the guide rail 100.

[0045] In a further embodiment, Figure 1As shown, a plurality of rigid support frames 110 are provided inside the guide rail 100, and the plurality of rigid support frames 110 are arranged at intervals along the length direction of the guide rail 100.

[0046] The plurality of rigid support frames 110 are provided to support the guide rail 100 and prevent the guide rail 100 from deforming.

[0047] The technical features of the above embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0048] The above-described embodiments only represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. An automatic blanking device for an accumulation conveyor chain system, characterized in that, include: guide; A tray assembly, wherein the tray assemblies are provided in a plurality and the plurality of tray assemblies are slidably arranged on the guide rail; A transmission chain, the transmission chain is arranged on the guide rail, the transmission chain can rotate circumferentially around the guide rail, and the tray assembly and the transmission chain have a first matching form and a second matching form. In the first matching form, the tray assembly and the transmission chain rotate synchronously, and in the second matching form, the tray assembly and the transmission chain rotate relative to each other; Automatic grippers, there are multiple automatic grippers, and the multiple automatic grippers are connected one by one with the multiple tray assemblies; The tray assembly comprises a frame, a trolley chain, a trolley sprocket, a center sprocket, a side rod, a roller and a replacement unit. There are four trolley sprockets and they are divided into two groups, each group has two trolley sprockets, the two groups of trolley sprockets are spaced front and back and rotatably arranged on the frame, the two trolley sprockets in each group are spaced left and right and coaxially arranged, there are two trolley chains, the two trolley chains are transmission-connected with the two groups of trolley sprockets, the center sprocket is located between the two trolley sprockets spaced left and right, and the center sprocket is coaxially arranged with the trolley sprocket, the center sprocket is transmission-connected with the transmission chain, and the center sprocket can rotate around its axis, there are multiple side rods, the multiple side rods are divided into two groups, the two groups of side rods are spaced left and right, and the multiple side rods in each group are equally spaced and arranged on the inner side of the trolley chain on the corresponding side, there are multiple rollers and they are divided into multiple groups, the multiple groups of rollers are alternately arranged left and right and rotatably arranged on the outside of the side rod on the corresponding side, the rollers are in rolling contact with the guide rails, and the replacement unit is arranged on the frame, and the replacement unit is used to make the multiple groups of rollers exchange positions between the two corresponding left and right groups of side rods.

2. The automatic blanking device for the accumulation conveyor system according to claim 1, characterized in that The exchange unit comprises an intermediate rod, a sliding block, a first electric telescopic rod, a double-headed electric telescopic rod, a toggle block and an electromagnetic block, the sliding block is slidably connected to the frame, and the sliding block can slide linearly in the front-rear direction, there are two electromagnetic blocks, and the two electromagnetic blocks are arranged at intervals on the upper part of the sliding block in the front-rear direction, the first electric telescopic rod can rotate around its axis, the first electric telescopic rod is rotatably arranged on the upper part of the sliding block, and the axis of the first electric telescopic rod passes through the center point of the line connecting the two electromagnetic blocks in the front-rear direction, and the first electric telescopic rod can rotate around its axis, the axis of the double-headed electric telescopic rod is perpendicular to the axis of the first electric telescopic rod, and the center point of the double-headed electric telescopic rod is located on the axis of the first electric telescopic rod, and there are two toggle blocks and they are respectively arranged at both ends of the double-headed electric telescopic rod; A slot is provided at the upper end of the electromagnetic block, and the middle rod is movably placed in the slot; When the axis of the middle rod coincides with the axis of the side rod in the left-right direction and the electromagnetic block is de-energized, the middle rod can be moved out of the slot and abut against the left and right side rods coaxially; When the axis of the middle rod coincides with the axis of the side rod in the left-right direction and the electromagnetic block is energized, the middle rod can be reset and moved into the slot.

3. The automatic blanking device for an accumulation conveyor system according to claim 2, characterized in that, The end surface of the side rod away from the trolley chain is an elliptical surface, and the axis of the elliptical surface is inclined downward; The end faces at both ends of the middle rod are also elliptical surfaces, and the end faces at both ends of the middle rod can be in surface contact with the end face of the side rod away from the trolley chain.

4. An automatic blanking device for an accumulation conveyor system according to claim 2, characterized in that, An annular groove is provided on the outer peripheral surface of the roller; The end of the toggle block is provided with a toggle protrusion, which is matched with the annular groove.

5. The automatic blanking device for the accumulation conveyor chain system according to claim 2, characterized in that, The swapping unit further includes a first motor, a driving screw rod, and a guiding rod. The first motor is arranged on the vehicle frame. The output end of the first motor is fixedly connected to the driving screw rod. The driving screw rod is in threaded connection with the sliding block, and the axis of the driving screw rod extends in the front-rear direction. The two ends of the guiding rod are connected to the vehicle frame, and the guiding rod is in sliding connection with the sliding block. The axis of the guiding rod is parallel to the axis of the driving screw rod.

6. The automatic blanking device for an accumulation conveyor chain system according to claim 2, characterized in that, A trigger is provided at the rear end of the vehicle frame; The tray assembly further includes a braking unit. The braking unit is arranged inside the vehicle frame and cooperates with the central sprocket. The braking unit is also in signal connection with the trigger; The braking unit is configured to limit the central sprocket from rotating about its own axis when the trigger is not triggered; The braking unit is further configured to cancel the limitation on the central sprocket from rotating about its own axis when the trigger is triggered.

7. The automatic blanking device for the accumulation conveyor chain system according to claim 2, characterized in that, It further includes a driving sprocket and a driven sprocket. The driving sprocket and the driven sprocket have the same diameter and are spaced apart front and rear. The driving sprocket can rotate about its own axis. Both the driving sprocket and the driven sprocket are in transmission connection with a transmission chain.

8. An automatic blanking device for an accumulation conveyor chain system according to claim 7, characterized in that, Arc-shaped plates are further provided at the front and rear ends of the vehicle frame. The diameter of the arc-shaped plates is adapted to the diameter of the driving sprocket.

9. The automatic blanking device for an accumulation conveyor chain system according to claim 2, characterized in that, First magnets are embedded at both ends of the intermediate rod, and second magnets are embedded at one end of the side rod far from the vehicle frame; The magnetic sides of the first magnet and the second magnet facing each other have opposite magnetic polarities.

10. The automatic blanking device for an accumulation conveyor chain system according to claim 1, characterized in that, A plurality of rigid support frames are provided inside the guide rail, and the plurality of rigid support frames are arranged at intervals along the length direction of the guide rail.

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