A circulating accumulation apron conveyor system

Abstract

The present application relates to the technical field of conveying system, specifically to a circulating accumulation and release chain plate conveying system, which comprises a circulating accumulation and release chain plate conveyor and a conveying chain plate at the upper end of the conveyor, a tray is movably installed on the conveying chain plate, tray positioning member one and tray positioning member two are respectively installed on both sides of the conveying chain plate to position and clamp the tray, and the beneficial effects are that a single chain plate is used to realize the circulating feeding, space is saved, and cost is reduced, the flexible stopping of the tray is realized through a plurality of material blocking air cylinders, the anti-collision mechanism cooperates with the middle bottom tray, the structure of the tray does not need to be changed, the buffer performance of the side edge of the tray can be realized by using the installed tray mounting sleeve frame, the pre-buffering before the material blocking of the middle bottom tray is realized, the deviation of the tray positioning and the damage of the tray in the rapid stopping state are avoided, the stability of the circulating accumulation and release chain plate conveying is improved, and the overall service life of the tray is prolonged.

Description

Technical Field

[0001] This invention relates to the field of conveying system technology, specifically a circulating accumulation chain conveyor system. Background Technology

[0002] With the rapid development of industrial automation and logistics automation, traditional material conveying methods can no longer meet the needs of modern production lines. As a new type of material conveying equipment, the circulating accumulation chain conveyor system has gradually become an important part of the industrial automation field due to its high efficiency, flexibility and stability. The traditional method of using double-layer conveyor lines to achieve circulating conveying occupies a large space and has a high cost.

[0003] In existing technologies, such as the pallet and crankshaft loading / unloading accumulation conveyor line disclosed in CN111703839A, which relates to the field of automotive casting technology, the pallet includes a pallet panel. Sliding supports and fixed supports are arranged opposite each other on the top surface of the pallet panel. Hook plates are respectively arranged on both sides of the bottom surface of the pallet panel, and a positioning pin is arranged in the middle of the bottom surface of the pallet panel. The crankshaft loading / unloading accumulation conveyor line has a scientific and reasonable structural design. It effectively solves problems such as high cost, cumbersome design, and non-adjustable pallets by eliminating the need for a small end lift, double-layer roller conveyor, and pallet adjustment.

[0004] To address the issue of pallets not being reusable, existing technologies employ a stopper to block subsequent pallets from moving forward.

[0005] However, in actual use, when the stopper contacts both sides of the pallet, it can easily cause the pallet to shift or the parts to tilt over time. This not only affects the service life of the pallet, but also affects the stability of the loading and unloading parts.

[0006] Therefore, this invention proposes a circulating accumulation chain conveyor system to solve the problems of pallet positioning misalignment and pallet damage caused by the interruption of existing pallet loading and unloading. It uses a single chain to achieve circulating material supply, saving space and reducing costs. While intelligently stopping the pallet through multiple sets of material-stopping cylinders, it also weakens the impact of the material-stopping cylinders on the pallet, avoiding pallet positioning misalignment and pallet damage, extending service life and increasing production efficiency. Summary of the Invention

[0007] The purpose of this invention is to provide a circulating accumulation chain conveyor system to solve the problems mentioned in the background art.

[0008] To achieve the above object, the present invention provides the following technical solution: A circulating accumulation chain plate conveying system, including a circulating accumulation chain plate conveyor and the conveying chain plate at its upper end. A tray is movably installed on the conveying chain plate. On both sides of the conveying chain plate, a tray positioning member one and a tray positioning member two are respectively installed for positioning and clamping the tray. Sensors are respectively arranged on both sides of the tray positioning member one. Oppositely installed on both sides of the tray positioning member two are a stop material cylinder one and a stop material cylinder two for stopping the stop material cylinder two. Positioning holes and positioning groove plates are respectively opened on both sides of the tray. A bottom middle support plate and side ribs are fixedly installed at the lower end of the tray. An installation sleeve frame for the support plate is fixedly installed on the outer surface of the bottom middle support plate through bolts. An anti-collision mechanism is arranged on the installation sleeve frame for the support plate. The anti-collision mechanism includes a cylinder contact side plate, a central guide rod, an elastic extrusion groove plate, and a curved substrate. One end of the elastic extrusion groove plate is fixedly connected to one end of the cylinder contact side plate. One end of the central guide rod is arranged inside the elastic extrusion groove plate.

[0009] Preferably, the installation sleeve frame for the support plate is sleeved and installed in the shape of a "匚"-shaped plate outside the bottom middle support plate. Limiting edge grooves are respectively opened on the inner walls of both sides of the installation sleeve frame for the support plate. The inner surface of the limiting edge groove is movably connected to the outer surface of the cylinder contact side plate. The cylinder contact side plate is integrally in the shape of a "工"-shaped plate.

[0010] Preferably, circular notch grooves are respectively opened on both sides of the limiting edge groove. A telescopic sleeve rod and a buffer spring wire are arranged on the inner surface of the circular notch groove. The buffer spring wire is movably sleeved outside the telescopic sleeve rod. Both ends of the telescopic sleeve rod and the buffer spring wire are respectively fixedly connected to the surface of the cylinder contact side plate.

[0011] Preferably, a central groove is opened on the central inner wall of the cylinder contact side plate. The inner surface of the central groove is slidably connected to the outer surface of the central guide rod. A pre-contact plate is fixedly installed at the outer end of the central guide rod. A flat groove is arranged at the other end of the central guide rod.

[0012] Preferably, a connecting tooth rod is fixedly installed on the surface of the flat groove. A tooth piece is meshed and rotated on the outer surface of the connecting tooth rod. A movable push arm is fixedly connected to the tooth piece. The other end of the movable push arm is hinged and installed with a deformable elastic piece.

[0013] Preferably, a limiting column is fixedly installed on one side of the curved substrate. There are two groups of the curved substrates. The two groups of the curved substrates are symmetrically distributed about the horizontal central axis of the limiting column. A parallel groove is arranged between the two groups of the curved substrates. The deformable elastic piece is movably installed inside the parallel groove. One end of the deformable elastic piece is rotatably connected to the outer surface of the limiting column. And the other end of the deformable elastic piece is rotatably connected to the end of the curved substrate far away from the limiting column.

[0014] Preferably, the outer surfaces of both ends of the limiting post are fixedly installed with elastic contact plates, and the inner arc surface of the elastic contact plate is hinged with a curved spring, and the other end of the curved spring is fixedly connected to the outer surface of the curved substrate.

[0015] Preferably, an extrusion chamber plate is provided on the inner side of the elastic extrusion groove plate, and an air guide pipe is connected through the inner wall of one end of the extrusion chamber plate. The air guide pipe passes through the inner wall of the elastic extrusion groove plate and the fitting frame and extends to the outside of the bottom middle support plate.

[0016] Preferably, the output end of the air guide tube is provided with a receiving groove, an active sealing element is movably installed on the inner surface of the receiving groove, and a rubber plug is fixedly installed on the outer surface of the active sealing element, the outer surface of the rubber plug being adapted to fit and engage with the inner wall of the air guide tube.

[0017] Preferably, the active sealing component has a hollow cylindrical structure, and air jet holes are respectively opened on the inner wall of the active sealing component. A return spring is fixedly connected to one end of the active sealing component away from the rubber plug, and the other end of the return spring is fixedly connected to the inner wall of the storage groove.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] This invention proposes a circulating accumulation chain conveyor system that uses a single chain plate to achieve circulating material supply, saving space and reducing costs. Multiple sets of material-stopping cylinders enable flexible pallet stopping. An anti-collision mechanism works in conjunction with the bottom middle pallet. Without altering the pallet structure, the added pallet mounting bracket provides side cushioning and pre-damping before the bottom middle pallet stops material, preventing pallet positioning misalignment and damage during rapid stopping. This improves the stability of the circulating accumulation chain conveyor and extends the overall service life of the pallet. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the circulating accumulation chain conveyor of the present invention;

[0021] Figure 2 This is a schematic diagram of the connection structure between the conveyor chain plate and the pallet of the present invention. Figure 1 ;

[0022] Figure 3 This is a schematic diagram of the connection structure between the conveyor chain plate and the pallet of the present invention. Figure 2 ;

[0023] Figure 4 This is a schematic diagram of the tray-stopping state structure of the present invention;

[0024] Figure 5 This is an exploded structural diagram of the pallet and pallet positioning component of the present invention;

[0025] Figure 6 This is a bottom-view perspective view of the tray structure of the present invention;

[0026] Figure 7 This is a schematic diagram of the connection structure between the bottom middle support plate and the support plate mounting bracket of the present invention;

[0027] Figure 8 This is a schematic diagram of the disassembly structure of the tray of the present invention;

[0028] Figure 9 This is a top sectional view of the connection between the pallet mounting bracket and the fitting frame of the present invention.

[0029] Figure 10 This is a top view cross-sectional structural diagram of the fitting frame of the present invention;

[0030] Figure 11 For the present invention Figure 10 A magnified structural diagram at point A;

[0031] Figure 12 This is a schematic diagram of the internal structure of the fitting frame of the present invention;

[0032] Figure 13 A schematic diagram of the curved substrate structure for the bonding elastic touch plate of the present invention is shown.

[0033] Figure 14 This is a schematic diagram of the connection structure between the compression plate and the air tube of the present invention;

[0034] Figure 15 For the present invention Figure 14 A magnified structural diagram at point B.

[0035] In the diagram: 1. Circulating accumulation chain conveyor; 11. Conveyor chain; 2. Pallet; 3. Material blocking cylinder one; 4. Material blocking cylinder two; 5. Pallet positioning component one; 6. Pallet positioning component two; 21. Positioning groove plate; 20. Positioning hole; 22. Bottom middle support plate; 221. Pallet mounting bracket; 2210. Limiting side groove; 222. Fitting frame; 2220. Shock absorber; 223. Cylinder contact side plate; 2231. Telescopic sleeve; 2232. Buffer spring wire; 224. Center guide rod; 2241. Pre- 2242. Contact plate; 2243. Connecting toothed rod; 2244. Toothed plate; 2245. Movable push arm; 2246. Deformable spring; 225. Elastic extrusion groove plate; 2250. Clearance groove; 2251. Extrusion bladder plate; 2252. Air guide tube; 2253. Active sealing component; 22530. Air jet hole; 22531. Rubber plug; 22532. Return spring; 226. Curved base plate; 2261. Limiting post; 2262. Adhesive elastic contact plate; 2263. Curved spring; 23. Side rib plate. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the present invention clear and complete, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of the present invention, and are merely illustrative of the embodiments of the present invention. They are not intended to limit the embodiments of the present invention. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] Example 1, please refer to Figure 1 - Figure 15 This invention provides a technical solution: a circulating accumulation chain conveyor system, including a circulating accumulation chain conveyor 1 and a conveyor chain 11 at its upper end. A pallet 2 is movably mounted on the conveyor chain 11. Pallet positioning component 5 and pallet positioning component 6 are respectively installed on both sides of the conveyor chain 11 for positioning and clamping the pallet 2. Sensors are respectively provided on both sides of the pallet positioning component 5. A material blocking cylinder 3 and a material blocking cylinder 4 are respectively installed opposite to each other on both sides of the pallet positioning component 6 for stopping the material blocking cylinder 4. Positioning holes 20 are respectively opened on both sides of the pallet 2. The bottom middle support plate 22 and the side stiffener plate 23 are fixedly installed on the lower end of the positioning groove plate 21 and the tray 2. The outer surface of the bottom middle support plate 22 is fixedly installed with a tray mounting bracket 221 by bolts. The tray mounting bracket 221 is provided with an anti-collision mechanism, which includes a cylinder contact side plate 223, a central guide rod 224, an elastic extrusion groove plate 225 and a curved base plate 226. One end of the elastic extrusion groove plate 225 is fixedly connected to one end of the cylinder contact side plate 223, and one end of the central guide rod 224 is located on the inner side of the elastic extrusion groove plate 225.

[0038] In this embodiment, multiple pallets 2 are slidably arranged on the conveyor chain plate 11. Due to the effects of gravity and friction, the pallets 2 can move synchronously with the conveyor chain plate 11. The material blocking cylinder 4 is the loading or unloading point. When the pallet 2 moves to this position, the loading and unloading work is completed.

[0039] Reference Figure 4As shown in the figure, when the sensor on the left side of the tray positioning part 5 detects the front tray, the material blocking cylinder 1 3 operates to block the front tray. At this time, the positioning column at the output end of the tray positioning part 5 extends out and cooperates with the positioning hole 20 on the side of the tray 2, and the positioning groove plate 21 cooperates with the tray positioning part 2 6 to jointly position and correct the tray 2; when the sensor on the right side of the tray positioning part 5 detects the rear tray, if there is a tray at the left sensor at this time, the material blocking cylinder 2 4 operates to block the rear tray; if there is no tray at the left sensor position at this time, the material blocking cylinder 2 4 does not operate and does not block the tray 2, and a material blocking cylinder 3 is also provided on the lower layer of the conveying chain plate 11. When there is a tray at the material blocking cylinder 2 4, if the material blocking cylinder 3 detects a tray, the material blocking cylinder 3 also operates to block the tray. After waiting for the material blocking cylinder 2 4 to release, the material blocking cylinder 3 releases. Through the above steps, the intelligent stop and release of the tray 2 on the conveying chain plate 11 are realized, ensuring the recycling of the tray 2 after feeding, replacing the traditional method of using a double-layer conveying line. This conveying line only uses a single chain plate to achieve cyclic feeding, saving space and reducing costs.

[0040] Embodiment 2: On the basis of Embodiment 1, in order to protect both sides of the bottom middle tray 22 from being impacted by the material blocking cylinder, this embodiment also proposes that the tray mounting sleeve frame 221 is sleeved and installed outside the bottom middle tray 22 in a "C"-shaped plate structure. Limiting edge grooves 2210 are respectively opened on the inner walls of both sides of the tray mounting sleeve frame 221, and the inner surface of the limiting edge groove 2210 is movably connected to the outer surface of the cylinder contact side plate 223. The cylinder contact side plate 223 is integrally in an "I"-shaped plate structure; circular notch grooves are respectively opened on both sides of the limiting edge groove 2210, and a telescopic sleeve rod 2231 and a buffer spring wire 2232 are arranged on the inner surface of the circular notch groove. The buffer spring wire 2232 is movably sleeved outside the telescopic sleeve rod 2231, and both ends of the telescopic sleeve rod 2231 and the buffer spring wire 2232 are respectively installed and fixedly connected to the surface of the cylinder contact side plate 223;

[0041] In this embodiment, a limiting groove 2210 is formed on the inner wall of the bottom middle support plate 22. The fitting frame 222 is fitted and embedded in the inner wall of the limiting groove 2210 and installed with fastening bolts. The outer fitting support plate mounting sleeve 221 forms a U-shaped surrounding primary protection for the lower part of the bottom middle support plate 22. The shock-absorbing chamber 2220 set in the inner cavity of the fitting frame 222 is used to place the cylinder contact plate 223. When the outer side of the support plate mounting sleeve 221 is impacted by the extension of the material blocking cylinder, the support plate mounting sleeve 221 provides initial blocking protection to avoid direct impact. The bottom middle support plate 22 and the upper tray 2 are impacted, and the telescopic sleeve 2231 and the buffer spring wire 2232 work together to guide and limit the movement of the side stiffener plate 23. The buffer spring wire 2232 undergoes elastic compression deformation with the external impact, thereby effectively reducing the direct damage of the external impact to the structural fitting frame 222 and providing multiple anti-collision barriers for the bottom middle support plate 22 to avoid damage. At the same time, the telescopic sleeve 2231 and the buffer spring wire 2232 can also help the cylinder contact the side plate 223 to reset when the material blocking cylinder is removed.

[0042] In Example 3, based on Example 2, in order to reduce the direct impact on the cylinder contact plate 223, this example further proposes that: a central groove is provided on the inner wall of the cylinder contact plate 223, the inner surface of the central groove is slidably connected to the outer surface of the central guide rod 224, a pre-contact plate 2241 is fixedly installed on one end of the outer side of the central guide rod 224, and a flat groove is provided on the other end of the central guide rod 224; a connecting toothed rod 2242 is fixedly installed on the surface of the flat groove, a toothed piece 2243 is meshed and rotated on the outer surface of the connecting toothed rod 2242, a movable push arm 2244 is fixedly connected to the toothed piece 2243, and a deformable spring piece 2245 is hinged to the other end of the movable push arm 2244;

[0043] In the embodiment, reference is made to Figure 10As shown, the central guide rod 224 penetrates the inner wall of the cylinder contact plate 223. When the cylinder contact plate 223 is subjected to external impact, the baffle cylinder first contacts the pre-contact plate 2241 connected to one end of the central guide rod 224, and then drives the central guide rod 224 to move into the damping chamber 2220. There is a certain buffer space between the pre-contact plate 2241 and the cylinder contact plate 223. At the same time, the connecting toothed rod 2242 connected to the end of the central guide rod 224 away from the pre-contact plate 2241 moves forward. Under the action of meshing and matching, the toothed plates 2243 on both sides drive the connected movable push arms 2244 to swing inward relative to each other. During the advancement of the central guide rod 224, the movable push arms 2244 continuously push the deformable spring plates 2245 connected to both sides outward. At this time, the deformable spring plates 2245 are pushed by the external force to form an arc. Regarding the deformation, it should be noted that when the deformation spring 2245 is in its initial state without being pushed by the movable push arm 2244, the deformation spring 2245 and the curved substrate 226 have the same curvature and direction. When pushed by an external force, the surface flips. The resulting curved deformation spring 2245 first contacts the inner wall of the shock-absorbing chamber 2220, preventing the central guide rod 224 from directly contacting the cylinder contact plate 223. This provides a certain resistance when the central guide rod 224 is pushed by an external force. On the other hand, the contact between the deformation spring 2245 and the inner wall of the shock-absorbing chamber 2220, along with the movable push arm 2244 applying a pushing force to the deformation spring 2245 and ensuring the support of the deformation spring 2245, complement and promote each other. This further solves the problem of pallet positioning deviation and pallet damage caused by the existing pallet when loading and unloading are stopped.

[0044] In Example 4, based on Example 3, in order to reduce the damage of external impact to the fitting frame 222, this example further proposes: a limiting post 2261 is fixedly installed on one side of the curved substrate 226; two sets of curved substrates 226 are provided, and the two sets of curved substrates 226 are symmetrically distributed about the horizontal central axis of the limiting post 2261, and a parallel groove is provided between the two sets of curved substrates 226; a deformable spring piece 2245 is movably installed inside the parallel groove; one end of the deformable spring piece 2245 is rotatably connected to the outer surface of the limiting post 2261, and the other end of the deformable spring piece 2245 is rotatably connected to the end of the curved substrate 226 away from the limiting post 2261; a contact elastic contact plate 2262 is fixedly installed on the outer surfaces of both ends of the limiting post 2261; a curved spring 2263 is hinged to the inner arc surface of the contact elastic contact plate 2262; and the other end of the curved spring 2263 is fixedly connected to the outer surface of the curved substrate 226.

[0045] In this embodiment, refer to Figure 12 - Figure 13As shown, when the pre-contact plate 2241 reaches the outer side of the cylinder contact side plate 223, the cylinder contact side plate 223 pushes inward, pushing one side of the curved substrate 226. Since the end of the curved substrate 226 away from the cylinder contact side plate 223 is fixedly connected to the inner wall of the shock-absorbing chamber 2220, when the curved substrate 226 is pushed by the cylinder contact side plate 223, it deforms. When the curved substrate 226 exceeds the stress tolerance range, the elastic contact plate 2262 connected to the outer side of the curved substrate 226 will pop outward and abut against the inner wall of the shock-absorbing chamber 2220, thereby further weakening the impact force of the cylinder contact side plate 223, avoiding vibration of the bottom middle support plate 22, ensuring the stability of the pallet 2 during conveying and stopping, and avoiding damage to the pallet 2 and other connecting parts.

[0046] In Example 5, based on Example 4, to enable the deformable elastic compression groove plate 225 to play an auxiliary role, this example further proposes: a compression bladder plate 2251 is provided on the inner side of the elastic compression groove plate 225; an air guide pipe 2252 is connected through the inner wall of one end of the compression bladder plate 2251; the air guide pipe 2252 passes through the inner wall of the elastic compression groove plate 225 and the fitting frame 222 and extends to the outside of the bottom middle support plate 22; a receiving groove is provided at the output end of the air guide pipe 2252, and a movable part is movably installed on the inner surface of the receiving groove. The active sealing component 2253 has a rubber plug 22531 fixedly installed on its outer surface. The outer surface of the rubber plug 22531 is adapted to fit and embed with the inner wall of the air guide tube 2252. The active sealing component 2253 has a hollow cylindrical structure. Air jet holes 22530 are respectively opened on the inner wall of the active sealing component 2253. A return spring 22532 is fixedly connected to one end of the active sealing component 2253 away from the rubber plug 22531. The other end of the return spring 22532 is fixedly connected to the inner wall of the storage groove.

[0047] In this embodiment, the popped-out elastic contact plate 2262 squeezes both sides of the elastic compression groove plate 225. At this time, the compression bladder plate 2251 inside the elastic compression groove plate 225 is subjected to external pressure, and the internal pressure is ejected through the only outlet air pipe 2252. At this time, the active sealing member 2253 pops out under pressure, and the return spring 22532 is stretched outward. When the active sealing member 2253 is ejected, the air jet hole 22530 is exposed, thus releasing the pressure inside the compression bladder plate 2251. When the compression bladder plate 2251 is no longer pushed by the elastic contact plate 2262 and returns to its original position, the active sealing member 225... 3. The air jet 22530 and the rubber plug 22531 are pushed back into the air duct 2252 by the reverse elastic force of the return spring 22532. The reason for connecting the rubber plug 22531 to one end of the outer side of the air duct 2252 is to enhance the sealing performance of the air duct 2252. The reason for designing these structures on the inner side of the elastic extrusion groove plate 225 is to combine shock absorption and anti-collision while the gas generated by squeezing and pushing the extrusion bladder plate 2251 is discharged from the outlet of the air duct 2252 and faces the conveyor chain plate 11. This achieves auxiliary cleaning of the conveyor chain plate 11 to avoid dust and further extends the overall service life of the circulating accumulation chain plate conveyor 1.

[0048] In actual use, firstly, the parts are fixed on pallet 2, and the equipment is started to transport the conveyor chain plate 11 and the upper pallet 2. When the sensor on the left side of pallet positioning component 5 detects the front pallet, the blocking cylinder 3 runs to block the front pallet. At this time, the positioning pin at the output end of pallet positioning component 5 extends and cooperates with the positioning hole 20 on the side of pallet 2. The positioning groove plate 21 cooperates with pallet positioning component 6 to jointly position and correct pallet 2. At this time, the side of pallet 2 is stopped in time by the blocking cylinder. When the cylinder touches the side plate 223 and is subjected to external impact, the blocking cylinder first abuts against the pre-contact plate 2241 connected to one end of the central guide rod 224, and then... The central guide rod 224 moves into the damping chamber 2220, creating a buffer space between the pre-contact plate 2241 and the cylinder contact plate 223. Simultaneously, the connecting toothed rod 2242, connected to the end of the central guide rod 224 away from the pre-contact plate 2241, moves forward. Under the meshing and matching action, the toothed plates 2243 on both sides drive the connected movable push arms 2244 to swing inwards relative to each other. During the advancement of the central guide rod 224, the movable push arms 2244 continuously push the deformable spring plates 2245 connected to both sides outwards. At this time, the deformable spring plates 2245 are pushed by external force to form an arc-shaped deformation. Subsequently, when the pre-contact plate... When plate 2241 reaches the outer side of cylinder contact plate 223, cylinder contact plate 223 pushes inward, pushing one side of curved substrate 226. Since the end of curved substrate 226 away from cylinder contact plate 223 is fixedly connected to the inner wall of shock-absorbing chamber 2220, when curved substrate 226 is pushed by cylinder contact plate 223, it deforms. When curved substrate 226 exceeds the stress tolerance range, the elastic contact plate 2262 connected to the outer side of curved substrate 226 will pop outward and abut against the inner wall of shock-absorbing chamber 2220, thereby further weakening the impact force of cylinder contact plate 223 and preventing bottom center damage. The vibration of plate 22 ensures the stability of pallet 2 during conveying and stopping, and avoids damage to pallet 2 and other connecting parts. When the sensor on the right side of pallet positioning component 5 detects the rear pallet, if there is a pallet at the left sensor, the blocking cylinder 4 will run to block the rear pallet. If there is no pallet at the left sensor, the blocking cylinder 4 will not run and will not block pallet 2. A blocking cylinder 3 is also set on the lower layer of the conveyor chain plate 11. If there is a pallet at blocking cylinder 24, and a pallet is detected at blocking cylinder 3, blocking cylinder 3 will also run to block the pallet. After blocking cylinder 24 releases, blocking cylinder 3 releases.

[0049] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A circulating accumulation chain conveyor system, comprising a circulating accumulation chain conveyor (1) and a conveyor chain plate (11) at its upper end, wherein a pallet (2) is movably mounted on the conveyor chain plate (11), characterized in that: On both sides of the conveying chain plate (11), a first pallet positioning member (5) and a second pallet positioning member (6) are respectively installed for positioning and clamping the pallet (2). Sensors are respectively arranged on both sides of the first pallet positioning member (5). On both sides of the second pallet positioning member (6), a first stop cylinder (3) and a second stop cylinder (4) are oppositely installed for stopping the pallet (2). Positioning holes (20) and positioning groove plates (21) are respectively formed on both sides of the pallet (2). A bottom middle support plate (22) and side rib plates (23) are fixedly installed at the lower end of the pallet (2). An anti-collision mechanism is arranged on the outer surface of the bottom middle support plate (22). The anti-collision mechanism includes a cylinder contact side plate (223), a central guide rod (224), an elastic extrusion groove plate (225), and a curved substrate (226). One end of the elastic extrusion groove plate (225) is fixedly connected to one end of the cylinder contact side plate (223), and one end of the central guide rod (224) is arranged inside the elastic extrusion groove plate (225); The support plate mounting sleeve (221) is arranged in a "U"-shaped plate-like structure and sleeved outside the bottom middle support plate (22). Limiting edge grooves (2210) are respectively formed on the inner walls of both sides of the support plate mounting sleeve (221). The outer surface of the cylinder contact side plate (223) is movably connected to the inner surface of the limiting edge groove (2210). The cylinder contact side plate (223) is integrally in a "H"-shaped plate-like structure; A central groove is formed in the central inner wall of the cylinder contact side plate (223). The outer surface of the central guide rod (224) is slidably connected to the inner surface of the central groove. A pre-contact plate (2241) is fixedly installed at the outer end of the central guide rod (224), and a flat groove is arranged at the other end of the central guide rod (224); A connecting tooth rod (2242) is fixedly installed on the surface of the flat groove. A tooth piece (2243) is meshed and rotated on the outer surface of the connecting tooth rod (2242). A movable push arm (2244) is fixedly connected to the tooth piece (2243), and a deformation elastic piece (2245) is hingedly installed at the other end of the movable push arm (2244); A limiting column (2261) is fixedly installed on one side of the curved substrate (226). There are two groups of the curved substrates (226). The two groups of the curved substrates (226) are symmetrically distributed about the horizontal central axis of the limiting column (2261). A parallel groove is arranged between the two groups of the curved substrates (226). The deformation elastic piece (2245) is movably installed inside the parallel groove. One end of the deformation elastic piece (2245) is rotatably connected to the outer surface of the limiting column (2261), and the other end of the deformation elastic piece (2245) is rotatably connected to the end of the curved substrate (226) far away from the limiting column (2261); The two ends of the limiting post (2261) are fixedly installed with elastic contact plates (2262), and the inner arc surface of the elastic contact plate (2262) is hinged with a curved spring (2263). The other end of the curved spring (2263) is fixedly connected to the outer surface of the curved substrate (226). An extrusion bladder plate (2251) is provided on the inner side of the elastic extrusion groove plate (225). An air guide pipe (2252) is connected through the inner wall of one end of the extrusion bladder plate (2251). The air guide pipe (2252) passes through the inner wall of the elastic extrusion groove plate (225) and the fitting frame (222) and extends to the outside of the bottom middle support plate (22).

2. The circulating accumulation chain conveyor system according to claim 1, characterized in that: The output end of the air guide tube (2252) is provided with a receiving groove. An active sealing element (2253) is movably installed on the inner surface of the receiving groove. A rubber plug (22531) is fixedly installed on the outer surface of the active sealing element (2253). The outer surface of the rubber plug (22531) is adapted to fit and engage with the inner wall of the air guide tube (2252).

3. The circulating accumulation chain conveyor system according to claim 2, characterized in that: The active sealing component (2253) has a hollow cylindrical structure. Air jet holes (22530) are respectively opened on the inner wall of the active sealing component (2253). A return spring (22532) is fixedly connected to one end of the active sealing component (2253) away from the rubber plug (22531). The other end of the return spring (22532) is fixedly connected to the inner wall of the storage groove.

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