A stacker with built-in buffer area

Abstract

The present invention belongs to the technical field of stackers, and in particular relates to a stacker with a built-in buffer area, comprising a stacker seat, a stacker frame installed on the stacker seat, a liftable cargo platform on the stacker frame, a lower conveying mechanism and a liftable upper clamping mechanism on the cargo platform, the lower conveying mechanism comprising a bidirectionally drivable conveying belt, a buffer area installed on the stacker seat, the buffer area comprising multiple layers of buffer conveyor belts, the buffer areas are located at both ends of the conveying direction of the buffer conveyor belts, and each layer of the buffer conveyor belts can be independently driven in two directions, and the conveying conveyor belt and the buffer conveyor belt cooperate to realize the transportation of goods; the advantage is that the stacker has multiple buffer positions, and for particularly long lanes, storage and retrieval integration can be achieved, and in the process of walking from one end of the lane to the other end, goods can be stored and retrieved at the same time, which saves the walking time of the stacker and improves efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of stackers, and in particular relates to a stacker with a built-in buffer area. Background Art

[0002] The automated warehouse is a new concept in logistics warehousing. It is a warehouse that uses high-rise shelves to store materials, is controlled and managed by computers, and uses automatically controlled stackers to store and retrieve materials. The aisle stacker is a special crane developed with the emergence of automated warehouses. It is usually referred to as a stacker and is the most important lifting and transportation equipment in automated warehouses. The stacker runs along the track in the aisle of the automated warehouse, and stores the materials at the entrance of the aisle into the designated cargo compartment, or takes out the materials in the designated cargo compartment and transports them to the aisle entrance, completing the material storage and retrieval operations.

[0003] Traditional stackers have the following defects: there are no cache slots on the stacker or there is only one cache slot on each layer, which makes the efficiency of taking goods low; the goods must be packaged in fixed sizes or placed on fixed-size carriers, and there are certain requirements for the packaging method or carrier. For smart warehouses with a large number of products in and out of the warehouse, the normal daily check-in and check-out quantity can only be met by increasing the number of stackers.

[0004] Based on this, this case is brought forward. Summary of the invention

[0005] The purpose of the present invention is to provide a stacker with a built-in buffer area to achieve storage and retrieval integration, save the travel time of the stacker and improve efficiency.

[0006] In order to achieve the above object, the technical solution of the present invention is as follows:

[0007] A stacker with a built-in buffer area comprises a stacker seat, a stacker frame is arranged on the stacker seat, a liftable cargo platform is arranged on the stacker frame, a lower conveying mechanism and a liftable upper clamping mechanism are arranged on the cargo platform, the lower conveying mechanism comprises a bidirectionally drivable conveying belt, a buffer area is arranged on the stacker seat, the buffer area comprises multiple layers of buffer conveyor belts, both ends of the buffer area located in the conveying direction of the buffer conveyor belt are open and each layer of the buffer conveyor belt can be independently driven in two directions, and the conveying conveyor belt and the buffer conveyor belt cooperate to realize the transportation of goods.

[0008] Furthermore, each layer of the buffer conveyor belt is provided with telescopic blocking blocks at both ends in the conveying direction.

[0009] Furthermore, each layer of the buffer conveyor belt is divided into a plurality of cargo positions in the conveying direction, and a detection sensor is provided on each cargo position.

[0010] Furthermore, the cargo platform includes a cargo platform frame slidably connected to the stacker frame, the upper clamping mechanism includes a welding frame slidably connected to the cargo platform frame and a welding frame lifting drive mechanism for controlling the lifting of the welding frame, the welding frame is connected to a screw rod one through a bearing and is provided with a first driving part for driving the screw rod one, the screw rod one is connected to two screw rod nuts one with opposite rotation directions, a bidirectional telescopic manipulator is fixed to the screw rod nut one, and the two bidirectional telescopic manipulators are arranged opposite to each other.

[0011] Furthermore, the welding rack lifting drive mechanism includes a screw rod 2 and a second drive unit for driving the screw rod 2, the second drive unit is fixed on the cargo platform frame, the screw rod 2 is connected to the cargo platform frame through a bearing, and the screw rod 2 is provided with a screw rod nut 2 fixed to the welding rack.

[0012] Furthermore, the lower conveying mechanism includes a conveyor belt transmission system for driving the conveyor belt, and the conveyor belt transmission system includes a third driving unit and a driving shaft arranged above the cargo platform frame, the third driving unit is used to drive the driving shaft, and a driven shaft is provided on the conveyor belt, and synchronous wheels are provided on the driving shaft and the driven shaft, and the synchronous wheels on the driving shaft and the driven shaft are driven by synchronous belts, and the synchronous belts, synchronous wheels and driving shafts are arranged along the frame of the cargo platform frame.

[0013] Furthermore, there are multiple conveyor belts, and a smoothing bar device is provided between two adjacent conveyor belts, and a smoothing bar lifting and driving mechanism is provided on the cargo platform frame.

[0014] Furthermore, the stacker seat is a plate structure, the stacker frame and the buffer area are fixed above the stacker seat, bottom running wheels for walking on tracks are installed on both sides of the stacker seat, and top running wheels for walking on tracks are installed on the top of the stacker frame.

[0015] Furthermore, the stacker frame is a four-column structure, each column is provided with a slide, one side of the cargo platform frame is provided with a three-sided encircling guide wheel that can slide on the slide, and the other side is provided with a single-sided supporting guide wheel that can slide on the slide.

[0016] Furthermore, the stacker seat is a beam structure, and is provided with bottom running wheels for running on tracks. The stacker frame is a single-column structure and is fixed on the stacker seat. The top of the stacker frame is equipped with top running wheels for running on tracks. The buffer area is towed by the stacker seat and is equipped with universal wheels for running on the ground at the bottom.

[0017] The advantages of the present invention are:

[0018] 1. The stacker has multiple cache locations. For particularly long aisles, it can realize storage and retrieval integration. In the process of walking from one end of the aisle to the other, it can store and retrieve goods at the same time, which saves the walking time of the stacker and improves efficiency.

[0019] 2. The cargo platform of the stacker has a two-way synchronous clamping system on the upper layer and a conveying mechanism on the lower layer. The two-way synchronous clamping system can realize the picking and placing of soft-package goods within a certain size range between the lifting cargo platform of the aisle stacker and the shelf. At the same time, the double-layer mechanism of the cargo platform can realize the movement of goods in four directions: X+, X-, Y+ and Y-. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Schematic diagram of the three-dimensional structure of the stacker in Example 1;

[0021] Figure 2 for Figure 1 A side view schematic diagram of

[0022] Figure 3 for Figure 1 A top view schematic diagram of

[0023] Figure 4 It is a schematic diagram of the structure of the cargo platform in the stacker of Example 1;

[0024] Figure 5 for Figure 4 Schematic diagram of the structure of the middle cargo platform frame;

[0025] Figure 6 for Figure 4 Schematic diagram of the structure of the middle and upper clamping mechanism;

[0026] Figure 7 for Figure 6 A top view of a

[0027] Figure 8 It is a schematic diagram of the structure of the conveyor belt transmission system of the cargo platform in Example 1;

[0028] Fig. 9 for Figure 8 A top view schematic diagram of

[0029] Fig.10 This is a schematic diagram of the structure of the bidirectional telescopic manipulator in the cargo platform of Example 1;

[0030] Fig.11 This is a schematic diagram of the operating status of the cargo platform in Example 1;

[0031] Fig.12 This is a schematic diagram of the structure of the three-sided surrounding guide wheel in Example 1;

[0032] Fig.13This is a schematic diagram of the structure of the single-sided support guide wheel in Example 1;

[0033] Fig.14 Schematic diagram of the three-dimensional structure of the stacker in Example 2;

[0034] Fig.15 for Fig.14 A side view schematic diagram of

[0035] Description of symbols

[0036] 100. Cargo platform frame, 101. C-shaped groove, 102. Guide rail 2;

[0037] 200. upper clamping mechanism, 201. welding frame, 202. guide wheel, 203 slider, 204. first driving part, 205. guide rail 1, 206. mounting plate, 207. screw rod 1, 208. screw rod nut 1, 209. screw rod 2, 210. second driving part, 211. screw rod nut 2;

[0038] 300. lower conveying mechanism, 301. conveying conveyor belt, 302. smooth strip device, 303. synchronous belt, 304. smooth strip lifting drive device, 305. third driving part, 306. driving shaft, 307. driven shaft, 308. synchronous wheel;

[0039] 400. Bidirectional telescopic manipulator, 401. Fork-pull, 402. Fork-push;

[0040] 501. Double ground track, 502. Double sky track, 503 single ground track, 504 single sky track;

[0041] 600. Buffer area, 601. Buffer area A, 602. Buffer area B, 603. Buffer area C, 604. Buffer area D, 605. Buffer area E, 606. Buffer area F, 607. Buffer area G, 608. Buffer area H, 609 Buffer area H1, 610. Buffer area H2, 611. Buffer area H3, 612 Buffer conveyor belt, 613 Telescopic blocking block, 614 Detection sensor;

[0042] 700. Stacker seat, 701. Bottom running wheel, 702 top running wheel, 703 cargo platform lifting mechanism;

[0043] 800. Stacker frame, 801 three-sided embracing guide wheel, 802 single-sided supporting guide wheel;

[0044] 900 clamping slider, 901 slide rail, 902 universal wheel. DETAILED DESCRIPTION

[0045] The present invention is further described in detail below in conjunction with embodiments, and the X direction and Y direction in the following description shall be based on the directions indicated in the drawings.

[0046] Embodiment 1:

[0047] This embodiment proposes a stacker with a built-in buffer area, such as Figure 1 As shown, the stacker includes a stacker base 700, a stacker frame 800, a translation mechanism, a cargo platform lifting mechanism 703, a cargo platform and a buffer area 600. The stacker base 700 in this embodiment is a plate-type structure, and the translation mechanism is installed on the stacker base 700, including a bottom running wheel 701, a top running wheel 702 and a reduction motor driving the bottom running wheel 701. Figure 1 As shown in FIG. 1 , since the stacker in this embodiment is provided with a buffer area 600, it is heavier than the traditional stacker and needs to be provided with a total of four tracks in the warehouse, namely, Figure 1 The double ground rails 501 and double overhead rails 502 are used to improve the walking stability of the stacker. Figure 1 The double ground rails 501 are raised by angle steel, and the stacker seat 700 is not placed on the bottom running wheels 701, but the bottom running wheels 701 are placed on both sides of the stacker seat 700, so that the stacker seat 700 can sink. This design can reduce the requirements for the warehouse floor and save space in the height direction.

[0048] The cargo platform lifting mechanism 703 is used to drive the cargo platform to move up and down along the stacker frame 800. Figure 1 As shown, the cargo platform lifting mechanism 703 is installed at the front end of the stacker machine seat 700, and the motor drives the steel cable for traction, and the cargo platform is slidably connected with the stacker machine frame 800, so that the cargo platform can slide up and down along the stacker machine frame 800. Figure 1 As shown in , the stacker frame 800 of this embodiment is a four-column structure, which is two more than the traditional stacker, so that the cargo platform has four tracks for lifting on the frame, and there is no problem that the traditional stacker needs to increase rigidity due to the cantilever. The sliding connection between the cargo platform and the stacker frame 800 of this embodiment is realized in the following form: the four columns of the stacker frame 800 are all connected to the slideway, and one side of the cargo platform is provided with a three-sided embracing guide wheel 801 that can slide on the slideway, and the other side is provided with a single-sided supporting guide wheel 802 that can slide on the slideway to prevent the cargo platform from getting stuck during the lifting process, such as Fig.12 and 13 shown.

[0049] In this embodiment, the cache area 600 has a total of 8 layers, such as Figure 2As described in the above, the buffer area A601 to the buffer area H608 are distributed in 8 layers along the Z direction, and each layer is provided with a bidirectionally driven buffer conveyor belt 612 that can be independently operated. The buffer conveyor belt 612 is distributed along the X direction, and telescopic blocking blocks 613 are provided at both ends of the conveying direction. Each layer of the buffer conveyor belt 612 is divided into three storage positions, and each storage position is provided with a detection sensor 614, such as Figure 3 As shown, the buffer area H608 is divided into three storage areas: buffer area H1 609, buffer area H2 610, and buffer area H3 611. Figure 1 As shown, since the buffer area 608 of this embodiment is open at both ends of the buffer conveyor belt 612, loading at one end and unloading at the other end can be achieved through the buffer conveyor belt 612. When only the goods are loaded, the telescopic blocking block 613 at the loading end shrinks to make way, and the telescopic blocking block 613 at the unloading end extends to stop; when only the goods are unloaded, the telescopic blocking block 613 at the unloading end shrinks to make way, and the telescopic blocking block 613 at the loading end extends to stop; when loading at one end and unloading at the other end at the same time, the telescopic blocking blocks 613 at both ends shrink to make way at the same time; when the loading and unloading process is not performed, the telescopic blocking block 613 extends to stop at both ends. The detection sensor 614 is used to confirm whether the goods are delivered in place to ensure the accuracy of each loading and unloading. Since goods can be loaded and unloaded from both ends of the buffer area 608, compared with traditional stackers, when goods are put into the warehouse, there is no need to load them one by one from the loading platform, but they can directly enter from the end of the buffer area 608 away from the loading platform (goods outside the warehouse can be put into the buffer area by using a lifting platform with a conveyor belt device, or a new lifting and warehousing device can be designed based on the structure of the buffer area, which is not the invention of this case and will not be described in detail), thus improving work efficiency.

[0050] like Figure 4 As shown, this embodiment proposes a cargo platform for transporting goods in non-fixed-size soft packages on a stacker in a three-dimensional warehouse aisle, including a cargo platform frame 100, a lower conveying mechanism 300, and an upper clamping mechanism 200. The cargo platform frame 100 is used for sliding connection with the stacker frame 800.

[0051] like Figure 6As shown, the upper clamping mechanism 200 includes a U-shaped welding frame 201 and a welding frame lifting driving mechanism for controlling the lifting of the welding frame 201. The middle part of the welding frame 201 is connected to a screw rod 207 through a bearing and is provided with a first driving part 204 for driving the screw rod 207. The screw rod 207 is arranged along the X direction. The first driving part 204 adopts a servo motor with a reducer and is installed in the middle of the screw rod 207. Two screw rod nuts 208 with opposite rotation directions are connected to the screw rod 207 on both sides of the first driving part 204. The screw rod nut 208 is fixedly connected with a bidirectional telescopic manipulator 400 that is telescopic along the Y direction through a mounting plate 206. Through the screw rod 207, the two bidirectional telescopic manipulators 400 are synchronously approached or separated, and the clamping and releasing actions are realized.

[0052] The bidirectional synchronous clamping drive system can realize the picking and placing of soft-packaged goods within a certain size range between the lifting platform of the aisle stacker and the shelf. At the same time, compared with the traditional method, this function can well ensure that the position of the materials can always be placed in the center during the operation between the warehouse and the loading platform, especially for soft-packaged goods, which are difficult to ensure that their position is always centered during the transfer process using traditional methods.

[0053] like Figure 7 As shown, in order to make the approaching or moving away movement and the bidirectional telescopic movement of the bidirectional telescopic manipulator 400 more stable, in this embodiment, guide rails 205 parallel to the screw rod 207 are provided at both ends of the welding frame 201 in the Y direction, and the bidirectional telescopic manipulator 400 and the guide rail 205 are slidably connected via a mounting plate 206, that is, each bidirectional telescopic manipulator 400 is connected to the welding frame 201 via three mounting plates 206.

[0054] like Figures 5 to 7 As shown, a linear guide mechanism is provided between the welding frame 201 and the cargo platform frame 100, that is, a guide wheel 202 and a slider 203 are provided on both sides of the welding frame 201 in the X direction, and a C-shaped groove 101 matching with the slider 203 and a guide rail 102 matching with the slider 203 are provided on the cargo platform frame 100. Such a design can reduce the precision requirements of the lifting action for machining. The welding frame lifting drive mechanism of this embodiment includes a screw rod 209 and a second driving part 210 for driving the screw rod 209. The second driving part 210 adopts a motor and is fixed on the cargo platform frame 100. The screw rod 209 is connected to the cargo platform frame 100 through a bearing. The screw rod 209 is provided with a screw nut 211 fixed to the welding frame 201. The length of the screw rod 209 of this embodiment needs to be less than the height of the cargo platform frame 100 to avoid interference between the upper clamping mechanism 200 and the lower conveying mechanism 300.

[0055] The lower conveying mechanism 300 includes a conveyor belt 301 and a conveyor belt transmission system. The conveyor belt 301 can move goods from the stacker buffer area 608 to the cargo platform or from the cargo platform to the buffer area 608 in both directions. Compared with relying on a manipulator to push the material to move, it not only saves space, but also makes it easier to accurately and easily move back and forth between two positions for materials with high friction and easy deformation. Figure 8 and 9 As shown, the conveyor belt transmission system of this embodiment includes a third driving unit 305 and a driving shaft 306 arranged above the cargo platform frame 100. The third driving unit 305 adopts a motor with a reducer, and the driving shaft 306 is connected to the cargo platform frame 100 through a bearing. The third driving unit 305 is used to drive the driving shaft 306 to rotate (the transmission between the two can be through gears, or through the synchronous wheels and synchronous belts shown in the figure). A driven shaft 307 is provided on the conveyor belt 301, and the conveyor belt 301 is driven to rotate by the driven shaft 307. Both ends of the driving shaft 306 and the driven shaft 307 are provided with synchronous wheels, and the synchronous wheels on the driving shaft 306 and the synchronous wheels on the driven shaft 307 are driven by the synchronous belt 303. The synchronous belt 303, synchronous wheels and driving shaft 306 of this embodiment are arranged along the frame of the cargo platform frame 100, and the driving mechanism is arranged above the cargo platform frame 100, which can make the transmission area more concise and reduce interference.

[0056] Furthermore, the conveyor belt 301 of this embodiment is divided into multiple strips, and a smooth strip device 302 is provided between two adjacent conveyor belts 301. The smooth strip device 302 is used to reduce the friction between the goods and the lifting platform. At the same time, since the conveying direction of the conveyor belt 301 and the telescopic direction of the two-way telescopic manipulator 400 are generally not in the same direction, the present embodiment is also provided with a smooth strip lifting drive mechanism 304 on the top of the platform frame 100. For example, in the device of this embodiment, the transmission belt is conveyed along the X direction, and the two-way telescopic manipulator 400 is telescopic along the Y direction, that is, the friction between the goods and the platform includes friction in the X-axis and Y-axis directions. When the goods are transferred along the Y axis, the smooth strip rises to prevent the conveyor belt from being rubbed laterally; when the goods are transferred along the X axis, the smooth strip falls, and the goods are completely in contact with the conveyor belt and are conveyed by the conveyor belt. Compared with the design of the traditional stacker lifting platform that changes the conveying direction by rotating the fork, the structure of this embodiment is simpler.

[0057] The bidirectional telescopic manipulator 400 of this embodiment is a prior art, a three-stage structure (it can be more stages or a two-stage structure), and a built-in driving device to achieve bidirectional telescopic. The first stage of the bidirectional telescopic manipulator 400 is used to achieve fixation with the welding frame 201, and the second and third stages are used for bidirectional movement in the Y-axis direction. At the same time, a fork is provided at both ends of the bidirectional telescopic manipulator 400 in the Y direction. The fork is connected to the bidirectional telescopic manipulator 400 through a bearing and is controlled by the built-in motor of the bidirectional telescopic manipulator 400 to achieve rotation. Whenever the bidirectional telescopic manipulator 400 is telescoped to the specified position, the fork rotates 90 degrees. When the bidirectional telescopic manipulator 400 performs the next action (lifting or shrinking), the goods are pulled or pushed to the corresponding position by the fork.

[0058] The stacker of this embodiment is used for storage and retrieval, including the following process:

[0059] The stacker puts the goods in the warehouse into the buffer area 608: Assuming that the goods to be taken by the stacker are A0, the stacker moves to the specified position, and the cargo platform lifting mechanism 703 lifts the cargo platform to the specified height. The smooth bar lifting drive mechanism 304 works, and the smooth bar rises; at the same time, the welding rack lifting drive mechanism works, and the welding rack 201 is lowered to the working position; the two bidirectional telescopic manipulators 400 work synchronously and extend in the Y+ direction to the position, such as Fig.11 As shown; the first driving part 204 drives the two-way telescopic manipulators 400 on both sides to synchronously clamp the cargo A0 through the screw rod 207 and the screw nut 208; the fork-pull 401 rotates 90 degrees to reach the blocking position; the two-way telescopic manipulator 400 works, moves the cargo A0 along the smooth strip to the Y-direction, and enters the cargo platform; the fork-pull 401 rotates and retracts, and at the same time, the two-way telescopic manipulators 400 on both sides are released; the welding frame lifting drive mechanism works to drive the welding frame 201 to rise and return to the avoidance position; the smooth strip lifting drive mechanism 304 drives the smooth strip device 302 to descend, and the cargo AO is placed on the conveyor belt 301; the cargo platform lifting mechanism 703 lifts the cargo platform to be flush with a certain layer of the buffer area 608, and the conveyor belt 301 and the buffer conveyor belt 612 work synchronously to transfer the cargo from the cargo platform to the buffer area 608 along the X+ direction.

[0060] The stacker stores the goods in the buffer into the warehouse: Assuming that the goods to be stored by the stacker are A1, A1 moves in the X-direction through the buffer conveyor belt 612 in the buffer area 608, and at the same time, the cargo platform conveyor belt 301 works, docks the goods A1 in the buffer area 608, and transfers A1 from the buffer area 608 to the cargo platform; at the same time, the stacker walks to the specified position, and then the cargo platform is lifted to the specified height with the goods A1; the smooth bar lifting drive mechanism 304 works, and the smooth bar rises; the welding rack lifting drive mechanism Drive it down to the working position; the first driving part 204 drives the two-way telescopic manipulators 400 on both sides to synchronously clamp the cargo A1 through the screw rod 207 and the screw nut 208; at the same time, the fork-push 402 rotates 90 degrees to reach the blocking position; the two-way telescopic manipulator 400 works, and extends A1 to the Y+ direction to reach the position; A1 is pushed into the cargo position, and the two-way telescopic manipulator 400 synchronously moves to both sides to release A1, and at the same time, the fork-push 402 resets; the two-way telescopic manipulator 400 works and retracts to the original position.

[0061] Embodiment 2:

[0062] The principle of this embodiment is roughly the same as that of the first embodiment, except that the structure of the stacker base 700 and the stacker frame 800 is different. Fig.14 and Fig.15 As shown, the stacker seat 700 in this embodiment is a beam structure, and the translation mechanism is installed on the stacker seat 700, including a bottom running wheel 701, a top running wheel 702 and a reduction motor driving the bottom running wheel 701 to run. During actual operation, a single ground rail 503 and a single ceiling rail 504 can be set in the warehouse, and the bottom running wheel 701 and the top running wheel 702 run on the single ground rail 503 and the single ceiling rail 504 respectively. The buffer area 600 is connected to the stacker seat 700, and a universal wheel 902 for running on the ground is installed at the bottom. When the stacker seat 700 walks, the buffer area 600 is towed. The single ground rail 503 and the single ceiling rail 504 increase the stability of the stacker's walking. At the same time, since the buffer area 600 has a large load, it is independently supported on the ground and only powered by the stacker seat 700, which can reduce the requirements for the track structure strength.

[0063] The rack 800 of this embodiment is a single-column structure, a slide rail 901 is provided on the column of the stacker rack 800, and a clamping slider 900 matching the slide rail 901 is fixed to the cargo platform frame 100. The cargo platform lifting mechanism 703 of this embodiment enables the cargo platform to move up and down on the slide rail 901 by pulling up the chain.

[0064] The above embodiments are only used to explain the concept of the present invention, rather than to limit the protection of the rights of the present invention. Any non-substantial changes to the present invention using this concept shall fall within the protection scope of the present invention.

Claims

1. A stacker with a built-in buffer area, comprising a stacker seat, a stacker frame is arranged on the stacker seat, a liftable cargo platform is slidably connected to the stacker frame, and the characteristics are: The cargo platform is provided with a lower conveying mechanism and a liftable upper clamping mechanism, the lower conveying mechanism includes a bidirectionally drivable conveying belt, the stacker seat is provided with a buffer area, the buffer area includes multiple layers of buffer conveying belts, the buffer area is located at both ends of the conveying direction of the buffer conveying belt, and each layer of the buffer conveying belt can be independently driven in two directions, and the conveying conveying belt and the buffer conveying belt cooperate to realize the transportation of goods; The cargo platform comprises a cargo platform frame slidably connected to the stacker frame, the upper clamping mechanism comprises a welding frame slidably connected to the cargo platform frame and a welding frame lifting driving mechanism for controlling the lifting of the welding frame, the welding frame is connected to a screw rod 1 through a bearing and is provided with a first driving part for driving the screw rod 1, the screw rod 1 is connected to two screw rod nuts 1 with opposite rotation directions, a bidirectional telescopic manipulator is fixed to the screw rod nut 1, and the two bidirectional telescopic manipulators are arranged oppositely; There are multiple conveyor belts, a smoothing strip device is provided between two adjacent conveyor belts, and a smoothing strip lifting and driving mechanism is provided on the cargo platform frame; The two ends of the bidirectional telescopic manipulator in the telescopic direction are provided with forks, and the built-in motor of the bidirectional telescopic manipulator controls the forks to rotate. Whenever the bidirectional telescopic manipulator is telescoped to a specified position, the forks rotate 90 degrees. When the bidirectional telescopic manipulator performs the next action, the goods are pulled or pushed to the corresponding position by the forks.

2. A stacker with a built-in buffer area as claimed in claim 1, characterized in that: Each layer of the buffer conveyor belt is provided with telescopic blocking blocks at both ends of the conveying direction.

3. A stacker with a built-in buffer area as claimed in claim 1, characterized in that: Each layer of the buffer conveyor belt is divided into multiple cargo positions in the conveying direction, and each cargo position is equipped with a detection sensor.

4. A stacker with a built-in buffer area as claimed in claim 1, characterized in that: The welding rack lifting drive mechanism includes a screw rod 2 and a second drive unit for driving the screw rod 2, the second drive unit is fixed on the cargo platform frame, the screw rod 2 is connected to the cargo platform frame through a bearing, and the screw rod 2 is provided with a screw rod nut 2 fixed to the welding rack.

5. A stacker with a built-in buffer area as claimed in claim 1, characterized in that: The lower conveying mechanism includes a conveyor belt transmission system for driving the conveyor belt, and the conveyor belt transmission system includes a third driving unit and a driving shaft arranged above the cargo platform frame. The third driving unit is used to drive the driving shaft. A driven shaft is provided on the conveyor belt. Both the driving shaft and the driven shaft are provided with synchronous wheels. The synchronous wheels on the driving shaft and the synchronous wheels on the driven shaft are driven by synchronous belts. The synchronous belts, synchronous wheels and driving shafts are arranged along the frame of the cargo platform frame.

6. A stacker with a built-in buffer area as claimed in claim 1, characterized in that: The stacker seat is of plate structure, the stacker frame and buffer area are fixed above the stacker seat, bottom running wheels for running on tracks are installed on both sides of the stacker seat, and top running wheels for running on tracks are installed on the top of the stacker frame.

7. A stacker with a built-in buffer area as claimed in claim 1, characterized in that: The stacker frame is a four-column structure, each column is provided with a slideway, one side of the cargo platform frame is provided with a three-sided encircling guide wheel that can slide on the slideway, and the other side is provided with a single-sided supporting guide wheel that can slide on the slideway.

8. A stacker with a built-in buffer area as claimed in claim 1, characterized in that: The stacker seat is a beam structure, and is provided with bottom running wheels for running on tracks. The stacker frame is a single-column structure and is fixed on the stacker seat. Top running wheels for running on tracks are installed on the top of the stacker frame. The buffer area is pulled by the stacker seat and has universal wheels installed on the bottom for running on the ground.

Images