CN112777204A - Double-station stacker with buffer area and butt-joint area working method thereof - Google Patents

Abstract

The invention relates to a double-work-position stacker with a buffer area and a butt joint area working method thereof, wherein the stacker comprises a stacker seat and a lifting mechanism, the stacker seat is provided with the buffer area, the buffer area comprises a plurality of layers of buffer conveyor belts, the two ends of the buffer area in the conveying direction of the buffer conveyor belts are both opened, and each layer of buffer conveyor belts can be independently driven in two directions; the stacker is characterized in that two ends of a stacker seat in the conveying direction of a buffer conveyor belt are respectively provided with a cargo carrying platform, a lifting mechanism is used for driving the cargo carrying platforms to lift, and the maximum lifting height of the cargo carrying platforms is not less than the sum of the height of the cargo carrying platforms and the height of a buffer area; the goods carrying platform is provided with a lower layer conveying mechanism and a liftable upper layer clamping mechanism, and the lower layer conveying mechanism comprises a conveying conveyor belt capable of being driven bidirectionally; the advantages are that: the stacker is from taking a plurality of buffer positions, to very long tunnel, can realize the integration of access, from the in-process of tunnel one end walking to another end, get the goods while stocking, practiced thrift the time that the stacker walked, improved efficiency.

Description

Double-station stacker with buffer area and butt-joint area working method thereof

Technical Field

The invention belongs to the technical field of stackers, and particularly relates to a double-work-position stacker with a buffer area and a butt joint area work method thereof.

Background

An automatic stereoscopic warehouse is a new concept appearing in logistics storage, and is a warehouse which stores materials by using a high-level stereoscopic shelf, is controlled and managed by a computer and adopts an automatic control stacker to store and take the materials. The tunnel stacker is a special crane developed along with the appearance of an automatic stereoscopic warehouse, is generally called a stacker for short, and is the most important lifting and transporting equipment in the automatic stereoscopic warehouse. The stacker runs along a rail in a roadway of the automatic stereoscopic warehouse, and stores materials at the road junction into a specified lattice, or takes out the materials in the specified lattice and conveys the materials to the road junction, so that the warehouse entry and exit operation of the materials is completed.

The traditional stacker has the following defects: the stacker has no buffer position or only one lattice on each layer of the buffer position, so that the goods taking efficiency is low; the goods must be packaged in a fixed size or placed on a carrier with a fixed size, certain requirements are provided for a packaging mode or a carrier, and the daily normal number of the cashiers can be met only by increasing the number of stackers aiming at intelligent storage with a large number of products in and out of a warehouse.

Based on this, the present disclosure is thus directed.

Disclosure of Invention

The invention aims to provide a double-station stacker with a buffer area and a butt joint area working method thereof, so that access integration is realized, the walking time of the stacker is saved, and the efficiency is improved.

In order to achieve the purpose, the technical scheme of the invention is as follows:

a double-work-position stacker with a buffer area comprises a stacker saddle and a lifting mechanism, wherein the stacker saddle is provided with the buffer area, the buffer area comprises a plurality of layers of buffer conveyor belts, two ends of the buffer area in the conveying direction of the buffer conveyor belts are both opened, and each layer of buffer conveyor belt can be driven independently and bidirectionally; the stacker is characterized in that two ends of a stacker seat in the conveying direction of a buffer conveyor belt are respectively provided with a cargo carrying platform, a lifting mechanism is used for driving the cargo carrying platforms to lift, and the maximum lifting height of the cargo carrying platforms is not less than the sum of the height of the cargo carrying platforms and the height of a buffer area; the goods carrying platform is provided with a lower-layer conveying mechanism and a liftable upper-layer holding and clamping mechanism, the lower-layer conveying mechanism comprises a conveying conveyor belt capable of being driven in a two-way mode, and the conveying conveyor belt and the buffer storage conveyor belt are matched to realize conveying of goods.

Furthermore, telescopic blocking blocks are arranged at two ends of each layer of the buffer conveyor belt in the conveying direction.

Further, every layer of buffer memory conveyer belt divide into a plurality of goods positions in the direction of transfer, all is equipped with detection sensor on every goods position.

Further, carry cargo bed and include the cargo platform frame, the upper strata is embraced and is pressed from both sides the mechanism and is included and weld the frame with cargo platform frame sliding connection and be used for controlling the welding frame lift actuating mechanism that welds the frame and go up and down, welds and be connected with the lead screw through the bearing on the frame and be equipped with the first drive division that is used for driving lead screw one in the lump, even have two opposite turning to screw-nut one on the lead screw one, the rigid coupling has two-way flexible manipulator on the screw-nut one, two-way flexible manipulator sets up relatively.

Furthermore, the welding frame lifting driving mechanism comprises a second screw rod and a second driving part used for driving the second screw rod, the second driving part is fixed on the loading platform frame, the second screw rod is connected to the loading platform frame through a bearing, and a second screw rod nut fixedly connected with the welding frame is arranged on the second screw rod.

Further, lower floor's conveying mechanism is including the conveyer belt transmission system who is used for the drive to carry the conveyer belt, conveyer belt transmission system is including setting up third drive division and the driving shaft in the platform frame top of carrying goods, and third drive division is used for driving the driving shaft, carries to be equipped with the driven shaft on the conveyer belt, all be equipped with the synchronizing wheel on driving shaft and the driven shaft, the synchronizing wheel on the driving shaft and the synchronizing wheel on the driven shaft pass through synchronous belt drive, hold-in range, synchronizing wheel and driving shaft are arranged along the support body of the platform frame of carrying goods.

Furthermore, the conveying belts are provided with a plurality of conveying belts, a fluent strip device is arranged between every two adjacent conveying belts, and a fluent strip lifting driving mechanism is arranged on the goods carrying platform frame.

Furthermore, the stacker saddle is provided with a column at the end side of each opening of the buffer area, the cargo carrying platform frame is connected to the column in a sliding manner, and the height of the column higher than the buffer area is not less than the height of the cargo carrying platform.

Furthermore, bottom traveling wheels for traveling on the rails are installed on two sides of the stacker seat, and top traveling wheels for traveling on the rails are installed at the tops of the upright columns.

A butt-joint area working method of a double-station stacker with a buffer area comprises the stacker, wherein the butt-joint area is provided with a warehouse-out area and a warehouse-in area which have the same structure with the buffer area, and warehouse-out area and warehouse-in area are provided with warehouse area conveyor belts which can be driven by each layer in a bidirectional and independent mode, and the butt-joint area working method comprises the following steps:

s1, when the stacker is close to the warehouse-out area or the warehouse-in area, the goods carrying platform near one side of the butt joint area is lifted to the upper part of the buffer area to lead out a butt joint space;

s2, the buffer area is connected with the warehouse-out area or warehouse-in area;

and S3, the warehouse area conveyor belt is matched with the buffer conveyor belt to realize the conveying of the goods.

The invention has the advantages that:

1. the stacker is provided with a plurality of buffer positions, each layer of the buffer area can be independently and bidirectionally conveyed, the storage and the taking can be integrated aiming at a particularly long tunnel, and goods can be taken while being stored in the process of walking from one end of the tunnel to the other end, so that the walking time of the stacker is saved, and the efficiency is improved;

2. the goods carrying platform of the stacker is provided with a bidirectional synchronous clamping system positioned on the upper layer and a conveying mechanism positioned on the lower layer, the bidirectional synchronous clamping system can realize the taking and the placing of soft package goods in a certain size range between the lifting goods carrying platform of the tunnel type stacker and a goods shelf, and meanwhile, the double-layer mechanism of the goods carrying platform can realize the movement of the goods in the X +, X-, Y + and Y-directions;

3. the stacker is provided with two symmetrical lifting cargo carrying tables, and when the cargo is delivered to a cargo bin from the cargo carrying tables by utilizing the cargo carrying table at one side in a warehouse entry process, the cargo is delivered to the cargo carrying tables from a buffer area at one side; when the goods are delivered from the warehouse, the goods are dragged to the time of the goods carrying platform from the warehouse by utilizing the goods carrying platform on one side, and the goods are conveyed from the goods carrying platform to the cache region on one side, so that the working efficiency is improved.

Drawings

FIG. 1 is a schematic three-dimensional structure of a stacker in an embodiment of the present invention;

FIG. 2 is a schematic front view of FIG. 1;

FIG. 3 is a schematic view showing the structure of a cargo bed in the embodiment;

FIG. 4 is a schematic view of the construction of the cargo bed frame in the embodiment;

FIG. 5 is a schematic structural view of an upper clamping mechanism according to an embodiment;

FIG. 6 is a schematic top view of FIG. 5;

FIG. 7 is a schematic view showing the construction of a belt drive system in the embodiment;

FIG. 8 is a schematic view showing the installation of the transport conveyor and the fluency strip apparatus in an embodiment;

FIG. 9 is a schematic view showing the construction of a bidirectional telescopic robot in the embodiment;

FIG. 10 is a schematic view of the operational state of FIG. 3;

FIG. 11 is a schematic diagram of the stacker and docking area in the embodiment;

description of the reference symbols

100. A cargo carrying table frame, 101. C-shaped grooves, 102. a second guide rail;

200. an upper clamping mechanism, 201, a welding frame, 202, a guide wheel, 203, a sliding block, 204, a first driving part, 205, a first guide rail, 206, a mounting plate, 207, a first screw rod, 208, a first screw rod nut, 209, a second screw rod, 210, a second driving part, 211 and a second screw rod nut;

300. a lower layer conveying mechanism, 301, a conveying conveyor belt, 302, a fluency strip device, 303, a synchronous belt, 304, a fluency strip lifting driving mechanism, 305, a third driving part, 306, a driving shaft, 307, a driven shaft and 308, a synchronous wheel;

400. the method comprises the following steps of (1) bidirectional telescopic manipulator 401, shifting fork-dragging 402, shifting fork-pushing;

501. double ground rails, 502. double sky rails;

600. the buffer area, the buffer conveyor belt 601, the telescopic blocking block 602 and the detection sensor 603;

700. a stacker seat, 701, a bottom travelling wheel, 702, a top travelling wheel and 703 a cargo carrying table lifting mechanism;

800. an upright column, 801 three-side encircling guide wheel;

900 out of stock area, 901 in stock area, 902 in stock area.

Detailed Description

The present invention will be described in further detail with reference to examples, wherein the directions indicated in the drawings are referred to hereinafter as the X-direction and the Y-direction.

As shown in fig. 1 and 2, the embodiment provides a dual-work stacker with a buffer area, which includes a stacker seat 700, a translation mechanism, a cargo-carrying platform lifting mechanism 703, a cargo-carrying platform, and a buffer area 600. The stacker seat 700 is of a plate type structure, and the translation mechanism is installed on the stacker seat 700 and comprises a bottom walking wheel 701, a top walking wheel 702 and a speed reduction motor for driving the bottom walking wheel 701 to run. The buffer area 600 is fixed above the middle part of the saddle 700 of the stacker, and the stacker is additionally provided with the buffer area 600, so that the stacker is heavier than a traditional stacker, and four rails, namely a double ground rail 501 and a double sky rail 502 in fig. 1, are required to be arranged in a warehouse, so that the walking stability of the stacker is improved. The double ground rails 501 in fig. 1 are raised by angle steel, the stacker car seat 700 is not arranged on the bottom walking wheels 701, but the bottom walking wheels 701 are arranged on two sides of the stacker car seat 700, so that the stacker car seat 700 can sink.

The buffer area 600 of this embodiment is provided with 8 layers in total, and each layer is provided with the buffer conveyor belt 601 that can independently drive in two directions, and the buffer conveyor belt 601 moves along the X direction, and both ends in the direction of transfer are provided with the telescopic stop blocks 602. Each layer of the buffer conveyor belt 601 is divided into three storage positions along the X direction, and each storage position is provided with a detection sensor 603. As shown in fig. 1, since the buffer area 600 of this embodiment is opened at both ends of the buffer conveyor 601, feeding at one end and discharging at the other end can be realized through the buffer conveyor 601. When only goods are loaded, the telescopic blocking block 602 at the loading end contracts and gives way, and the telescopic blocking block 602 at the unloading end extends out to stop; when only goods are discharged, the telescopic blocking block 602 at the discharging end contracts and moves to the abduction position, and the telescopic blocking block 602 at the feeding end extends out to stop; when one end is used for feeding and the other end is used for discharging, the telescopic stop blocks 602 at the two ends are simultaneously contracted and abducted; when the loading and unloading process is not performed, the retractable blocking block 602 extends out to perform two-end blocking. The detecting sensor 603 is used to determine whether the goods are transferred in place, so as to ensure the accuracy of each loading and unloading.

The two load platforms and the two load platform lifting mechanisms 703 of the embodiment are respectively arranged at two ends of the cache area 600X. The buffer area 600 of this embodiment is the cuboid structure, so all be equipped with two stands 800 at every open end of buffer area 600, and four stands 800 laminate buffer area 600's frame sets up, and the cargo carrying platform is through trilateral formula guide pulley 801 sliding connection that encircles on stand 800 to realize vertical lift through cargo carrying platform hoisting mechanism 703. The height of the portion of the column 800 above the buffer zone 600 is not less than the height of the cargo bed, so that the maximum elevation height of the cargo bed is not less than the sum of the height of the cargo bed and the height of the buffer zone 600. As shown in fig. 11, the docking area is provided with an ex-warehouse area 900 and an in-warehouse area 901 which have the same structures as the buffer area 600, and the bottom of the docking area is provided with a track which can translate in the Y direction. The warehouse-out area 900 and the warehouse-in area 901 are also provided with 8 layers, each layer is provided with a warehouse area conveyor belt 902 capable of being driven bidirectionally and independently, the warehouse-out area 900 is used for receiving goods on the buffer area 600 to realize warehouse-out, and the warehouse-in area 901 is used for conveying goods to the buffer area 600 to realize warehouse-in. When the stacker needs to be matched with the butt joint area, the cargo platform on one side close to the butt joint area can be lifted to the top end (namely, the cargo platform is lifted to the part of the upright column 800 higher than the cache area 600) to realize abdication, so that the butt joint of the butt joint area and the cache area 600 is facilitated.

As shown in fig. 3 to 10, the present embodiment provides a cargo carrying platform for transporting a non-fixed-size soft-packaged commodity on a tunnel stacker of a stereoscopic warehouse, including a cargo carrying platform frame 100, a lower layer conveying mechanism 300, and an upper layer holding and clamping mechanism 200, where the cargo carrying platform frame 100 is used for being slidably connected with a pillar 800.

As shown in fig. 5, 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, and the welding frame 201 is slidably connected to the cargo bed frame 100. The middle part of the welding frame 201 is connected with a first screw rod 207 through a bearing and is provided with a first driving part 204 for driving the first screw rod 207, the first screw rod 207 is arranged along the X direction, and the first driving part 204 adopts a servo motor with a speed reducer and is arranged in the middle of the first screw rod 207. Two lead screw nuts 208 with opposite rotation directions are connected to two sides of the first driving part 204 on the first lead screw 207, and a bidirectional telescopic manipulator 400 which is telescopic along the Y direction is fixedly connected to the lead screw nuts 208 through a mounting plate 206. Through the first screw rod 207, the two bidirectional telescopic manipulators 400 are synchronously close to or far away from each other, and clamping and loosening actions are realized.

This two-way synchronous embrace presss from both sides actuating system can realize getting between tunnel type stacker lift cargo carrying platform and goods shelves of soft packet of goods in certain size range and put, compares in traditional mode simultaneously, and the position of assurance material self that this kind of function can be fine in the operation between warehouse and cargo carrying platform can place placed between two parties all the time, especially soft packet of goods, hardly guarantees its position with traditional mode and moves the process of moving between two parties all the time.

As shown in fig. 6, in order to make the approaching or departing movement and the bidirectional telescopic movement of the bidirectional telescopic manipulator 400 more stable, in this embodiment, the first guide rails 205 parallel to the first lead screws 207 are respectively disposed at the two Y-direction ends of the welding frame 201, and the bidirectional telescopic manipulator 400 and the first guide rails 205 are slidably connected through the mounting plate 206, that is, each bidirectional telescopic manipulator 400 is connected with the welding frame 201 through three mounting plates 206.

As shown in fig. 4 to 6, a linear guide mechanism is provided between the welding frame 201 and the cargo bed frame 100, that is, a guide wheel 202 and a slide block 203 are respectively provided on two sides of the welding frame 201 in the X direction, and a C-shaped groove 101 and a second guide rail 102 matched with the slide block 203 are provided on the cargo bed frame 100. The welding frame lifting driving mechanism of the embodiment comprises a second screw rod 209 and a second driving part 210 used for driving the second screw rod 209, the second driving part 210 is fixed on the loading platform frame 100 by adopting a motor, the second screw rod 209 is connected on the loading platform frame 100 through a bearing, and a second screw rod nut 211 fixedly connected with the welding frame 201 is arranged on the second screw rod 209. The length of the second screw 209 of this embodiment needs to be smaller than the height of the cargo table frame 100 to avoid the interference between the upper clamping mechanism 200 and the lower conveying mechanism 300.

Lower floor's conveying mechanism 300 is including carrying conveyer belt 301 and conveyer belt transmission system, carries conveyer belt 301 can two-wayly to remove the goods from stacker buffer 600 to carry cargo bed or with the goods from carrying cargo bed to buffer 600, compares in relying on the machinery hand to push the material operation, has not only saved the space, and big to the frictional force, the material of easy deformation, the operation of making a round trip between two positions of easier accuracy and light. As shown in fig. 7 and 8, the conveyor belt transmission system of the present embodiment includes a third driving portion 305 and a driving shaft 306 disposed above the cargo bed frame 100, the third driving portion 305 employs a motor with a speed reducer, and the driving shaft 306 is connected to the cargo bed frame 100 through a bearing. The third driving portion 305 is used for driving the driving shaft 306 to rotate (the transmission between the two can be through gears, or can be through a synchronous wheel 308 and a synchronous belt 303 shown in the figure). The conveying conveyor belt 301 is provided with a driven shaft 307, the conveying conveyor belt 301 is driven to rotate through the driven shaft 307, synchronizing wheels 308 are arranged at two ends of the driving shaft 306 and two ends of the driven shaft 307, and the synchronizing wheels 308 on the driving shaft 306 and the synchronizing wheels 308 on the driven shaft 307 are driven through a synchronizing belt 303. The timing belt 303, the timing wheel 308 and the driving shaft 306 of the present embodiment are disposed along the frame body of the cargo bed frame 100, and the driving mechanism is disposed above the cargo bed frame 100, so that the conveying area is more compact and the interference is reduced.

Further, the conveying conveyor belt 301 of the embodiment is divided into a plurality of belts, a fluent strip device 302 is arranged between two adjacent conveying conveyor belts 301, and the fluent strip device 302 is used for reducing friction between the goods and the lifting goods carrying platform. Meanwhile, since the conveying direction of the conveying belt 301 and the telescopic direction of the bidirectional telescopic manipulator 400 are generally not in one direction, the embodiment further provides a fluent strip lifting driving mechanism 304 on the top of the cargo bed frame 100. For example, in the present embodiment, the transmission belt is transported in the X direction, and the bidirectional telescopic robot 400 is telescopic in the Y direction, i.e., the friction between the cargo and the cargo table includes the friction in both the X axis and the Y axis. When the goods are transferred along the Y axis, the fluency strip device 302 is lifted, so that the conveyor belt is prevented from being transversely rubbed; when the X axle of goods takes place to move and carries, fluent strip device 302 descends, and goods and conveyer belt contact completely are carried by the conveyer belt, compare traditional stacker elevating platform and reach the design that changes direction of transfer through rotatory fork, and this embodiment structure is simpler.

The bidirectional telescopic manipulator 400 of the embodiment is of the prior art, is of a three-level structure (can be more multi-level, and can also be of a two-level structure), is internally provided with a driving device to realize bidirectional telescopic, is used for fixing with the welding frame 201 in the first level of the bidirectional telescopic manipulator 400, and is used for bidirectional movement in the Y-axis direction in the second level and the third level. Meanwhile, shifting forks are further arranged at the two ends of the bidirectional telescopic manipulator 400 in the Y direction, the shifting forks are connected with the bidirectional telescopic manipulator 400 through bearings and controlled by a built-in motor of the bidirectional telescopic manipulator 400 to rotate, the shifting forks rotate by 90 degrees after the bidirectional telescopic manipulator 400 extends to a specified position, and when the bidirectional telescopic manipulator 400 performs the next action (lifting or shrinking), goods are dragged or pushed to the corresponding position by the shifting forks.

The use of this embodiment is as follows,

in cooperation with the docking area: when the stacker is close to the warehouse-out area 900 or the warehouse-in area 901, the goods carrying platform close to one side of the butt joint area is lifted to be above the buffer area 600, and a butt joint space is formed; the buffer area 600 is butted with the ex-warehouse area 900 or the in-warehouse area 901; the storage area conveyor belt 902 is matched with the buffer conveyor belt 601 to realize the conveying of goods.

When taking goods from the shelf: assuming that the goods to be taken by the stacker is a0, the stacker travels to a specified position, and the load table lifting mechanism 703 lifts the load table (the right load table in fig. 2 is taken as an example in this section) to a specified height. The fluent strip lifting driving mechanism 304 works, and the fluent strip device 302 rises; meanwhile, the welding frame lifting driving mechanism works to lower the welding frame 201 to a working position; the two bidirectional telescopic manipulators 400 work synchronously and extend to the Y + direction to reach the positions, as shown in FIG. 10; the first driving part 204 drives the two-way telescopic manipulator 400 at two sides to clamp the goods A0 synchronously through the first lead screw 207 and the first lead screw nut 208; the shifting fork-drag 401 rotates by 90 degrees to reach a blocking position; the bidirectional telescopic manipulator 400 works to bring the goods A0 to move along the fluency strip in the Y-direction and enter the goods loading platform; the shifting fork-pulling rotation is retracted, and meanwhile, the bidirectional telescopic mechanical arms 400 on the two sides are loosened; the welding frame lifting driving mechanism works to drive the welding frame 201 to ascend to the avoidance position; the fluent strip lifting driving mechanism 304 drives the fluent strip device 302 to descend, and the goods AO are placed on the conveying conveyor belt 301; the cargo-carrying platform lifting mechanism 703 lifts the cargo-carrying platform to be flush with a certain floor of the buffer area 600, the conveying conveyor belt 301 and the buffer conveyor belt 601 work synchronously, and the cargo is conveyed from the cargo-carrying platform to the buffer area 600 along the X + direction.

When stocking the shelves, assuming that the goods to be accessed by the stacker is A1, A1 moves in the buffer area 600 in the X-direction through the buffer conveyor belt 601, and meanwhile, the conveying conveyor belt 301 of the goods loading platform (the right-side goods loading platform in the section is taken as an example in FIG. 2) works to butt against the goods A1 of the buffer area 600 and convey A1 from the buffer area 600 to the goods loading platform; meanwhile, the stacker walks to a specified position, and then the goods carrying platform carries the goods A1 to be lifted to a specified height; the fluent strip lifting driving mechanism 304 works, and the fluent strip device 302 rises; the welding frame lifting driving mechanism drives the welding frame to descend to a working position; the first driving part 204 drives the two-way telescopic manipulator 400 at two sides to clamp the goods A1 synchronously through the first lead screw 207 and the first lead screw nut 208; meanwhile, the shifting fork-pusher 402 rotates 90 degrees to reach a blocking position; the bidirectional telescopic manipulator 400 works and drives the A1 to extend to the right position in the Y + direction; pushing the A1 into a cargo space, synchronously moving the bidirectional telescopic manipulator 400 to two sides to release the A1, and simultaneously resetting the shifting fork-pushing 402; the bi-directional telescopic robot 400 operates to retract to the home position.

Because two symmetrical goods carrying platforms are arranged, when goods are delivered to a warehouse from the goods carrying platforms by the goods carrying platforms on one side in a warehouse entry process, the goods are transferred from the buffer area 600 to the goods carrying platforms on the other side; when the goods are delivered from the warehouse, the time that the goods are dragged to the goods carrying table from the warehouse by the goods carrying table on one side is utilized, the goods are conveyed from the goods carrying table to the cache region 600 on one side, and the working efficiency is improved.

The above embodiments are only used for explaining the concept of the invention, and not for limiting the protection of the invention, and any insubstantial modifications of the invention using this concept shall fall within the scope of the invention.

Claims (10)

1. The utility model provides a from two work position pilers of taking buffer memory district, includes piler saddle and hoisting mechanism, its characterized in that: the stacker saddle is provided with a buffer area, the buffer area comprises a plurality of layers of buffer conveyor belts, two ends of the buffer area in the conveying direction of the buffer conveyor belts are both opened, and each layer of buffer conveyor belts can be driven independently and bidirectionally; the stacker is characterized in that two ends of a stacker seat in the conveying direction of a buffer conveyor belt are respectively provided with a cargo carrying platform, a lifting mechanism is used for driving the cargo carrying platforms to lift, and the maximum lifting height of the cargo carrying platforms is not less than the sum of the height of the cargo carrying platforms and the height of a buffer area; the goods carrying platform is provided with a lower-layer conveying mechanism and a liftable upper-layer holding and clamping mechanism, the lower-layer conveying mechanism comprises a conveying conveyor belt capable of being driven in a two-way mode, and the conveying conveyor belt and the buffer storage conveyor belt are matched to realize conveying of goods.

2. The dual-task stacker with buffer area of claim 1, wherein: and telescopic blocking blocks are arranged at two ends of each layer of the cache conveyor belt in the conveying direction.

3. The dual-task stacker with buffer area of claim 1, wherein: every layer of buffer memory conveyer belt divide into a plurality of goods positions on the direction of transfer, all is equipped with detection sensor on every goods position.

4. The dual-task stacker with buffer area of claim 1, wherein: the goods carrying table comprises a goods carrying table frame, the upper-layer holding and clamping mechanism comprises a welding frame and a welding frame lifting driving mechanism, the welding frame is in sliding connection with the goods carrying table frame, the welding frame lifting driving mechanism is used for controlling the welding frame to lift, a first driving portion used for driving a first lead screw is connected onto the welding frame through a bearing and is arranged in the lump, the first lead screw is connected with a first lead screw nut in two opposite rotating directions, a first lead screw nut is fixedly connected onto the first lead screw nut, and the two-way telescopic manipulators are arranged oppositely.

5. The dual-task stacker with buffer area of claim 4, wherein: the welding frame lifting driving mechanism comprises a second screw rod and a second driving part used for driving the second screw rod, the second driving part is fixed on the loading platform frame, the second screw rod is connected to the loading platform frame through a bearing, and a second screw rod nut fixedly connected with the welding frame is arranged on the second screw rod.

6. The dual-task stacker with buffer area of claim 4, wherein: the lower-layer conveying mechanism comprises a conveying belt transmission system used for driving a conveying belt, the conveying belt transmission system comprises a third driving portion and a driving shaft, the third driving portion is arranged above the cargo carrying table frame and used for driving the driving shaft, a driven shaft is arranged on the conveying belt, synchronizing wheels are arranged on the driving shaft and the driven shaft, the synchronizing wheels on the driving shaft and the driven shaft are in synchronous belt transmission, and the synchronous belts, the synchronizing wheels and the driving shaft are arranged along a frame body of the cargo carrying table frame.

7. The dual-task stacker with buffer area of claim 4, wherein: the conveying conveyor belt is provided with a plurality of conveying conveyor belts, a fluent strip device is arranged between every two adjacent conveying conveyor belts, and a fluent strip lifting driving mechanism is arranged on the goods carrying platform frame.

8. The dual-task stacker with buffer area of claim 4, wherein: the stacker saddle is located every opening end side of buffer zone and all is equipped with the stand, carries cargo bed frame sliding connection on the stand, the height that the stand is higher than buffer zone part is not less than the height of carrying cargo bed.

9. The dual-task stacker with buffer area of claim 8, wherein: and bottom traveling wheels for traveling on the rails are installed on two sides of the stacker seat, and top traveling wheels for traveling on the rails are installed at the tops of the upright columns.

10. A docking area working method of a dual-station stacker with a buffer area according to any one of claims 1 to 9, wherein the docking area is provided with an ex-warehouse area and an in-warehouse area having the same structure as the buffer area, and warehouse area conveyor belts each of which can be driven independently in two directions are provided on the ex-warehouse area and the in-warehouse area, the docking area working method comprising the steps of:

s1, when the stacker is close to the warehouse-out area or the warehouse-in area, the goods carrying platform near one side of the butt joint area is lifted to the upper part of the buffer area to lead out a butt joint space;

s2, the buffer area is connected with the warehouse-out area or warehouse-in area;

and S3, the warehouse area conveyor belt is matched with the buffer conveyor belt to realize the conveying of the goods.

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