CN111846806A

CN111846806A - Automatic buffer memory system that carries of brace tray

Info

Publication number: CN111846806A
Application number: CN202010610739.XA
Authority: CN
Inventors: 刘志东; 王青云; 武晋; 王舒庆; 王凯; 徐家辉; 艾学崇; 杨旭
Original assignee: Tianjin Sino German University of Applied Sciences
Current assignee: Tianjin Sino German University of Applied Sciences
Priority date: 2020-06-30
Filing date: 2020-06-30
Publication date: 2020-10-30

Abstract

The invention discloses an automobile bumper caching, lifting and carrying system which comprises a lifting unit, a caching warehouse, a transportation trolley and an aluminum profile structure, wherein the lifting unit is arranged on the automobile bumper caching warehouse; the lifting unit comprises a lifting tray, a warehouse conveying cylinder, a tray pneumatic stop block, a lifting guide unit and the like; the buffer storage comprises an upper limit sensor, an upper layer counting sensor, an upper layer full storage sensor, an upper layer speed multiplying chain, a partition pneumatic stop block, a half storage sensor, an upper layer driving motor, an upper layer warehouse-out pneumatic stop block, an upper layer counting reduction sensor, a lower limit sensor, a lower layer driving motor, a lower layer warehouse-out pneumatic stop block, an empty tray pushing cylinder and the like; the transportation trolley comprises trolley lower-layer fluency strips and trolley upper-layer fluency strips. The system lifts the bumpers manually placed on the lifting tray and transmits the bumpers to the transport trolley in groups, the bumpers are pulled by the tractor, the labor intensity and the error rate of workers are reduced, the manpower loss and the product damage in the carrying process are avoided, and the efficient and intelligent management of the bumpers is realized.

Description

Automatic buffer memory system that carries of brace tray

Technical Field

The invention relates to the technical field of automobile manufacturing automation, in particular to an automatic conveying and caching system for a brace tray.

Background

With the development of society, the types and the quantity of automobiles are more and more required, and the safety is a problem which is paid attention by manufacturers. The bumper is a device for absorbing and relieving external impact force to generate buffer when a vehicle or a driver is subjected to collision stress, and plays a role in protecting people and the vehicle. The front and rear bumpers of the vehicle are required to be harmonious and uniform with the shape of the vehicle body and to be light in weight in addition to the original protection function.

At present, the front and rear bumpers of the car are made of plastics, and the front and rear bumpers are called plastic bumpers. The plastic bumper consists of three parts, namely an outer plate, a buffer material, a cross beam and the like. The plastic bumper has strength, rigidity and decoration, can play a role of buffering when a vehicle has a collision accident from the aspect of safety, protects front and rear vehicle bodies, can be naturally combined with the vehicle bodies from the aspect of appearance to form a whole, has good decoration, and becomes an important part for decorating the appearance of the vehicle. The production of bumper is mass production mostly, and the automation of injection molding machine and coating line has basically been realized in current bumper production, after car bumper spraying is accomplished, need pass through the part assembly line, carry out parts assembly such as decoration, car light, air-inlet grille, by artifical transport to transport platform truck brace tray after the assembly is accomplished, transport to the final assembly workshop and carry out whole car assembly, this process needs a large amount of manual work to accomplish the transport loading to the bumper.

However, at present, due to the fact that iteration of a vehicle type is fast, finished bumpers need to be manually assembled and then loaded on a trolley, the finished bumpers are transported to a general assembly workshop through the trolley, in order to avoid scraping and rubbing, the bumpers are singly supported and fixed through a support tray on the trolley, in the process, the empty tray with the trolley lower layer needs to be manually moved down firstly, the bumpers are fixed and then are moved to the trolley upper layer, manual moving actions are frequent, labor intensity is high, and the whole process time is long. And along with the improvement of whole car production line degree of automation, bumper production rhythm is also faster and faster, in order to adapt to whole production speed and requirement, also need improve the takt to bumper handling process. The manual carrying and loading can not realize higher working efficiency, the labor cost is higher and higher, and certain risks and error rate exist. Currently, lifting and carrying take up much time for manual carrying, and therefore, it is necessary to improve the automation degree of lifting and carrying of the bumper.

Disclosure of Invention

The invention aims to provide an automatic conveying and caching system for a brace tray, which can continuously finish the lifting and carrying process of a bumper, has high artificial controllable degree, can meet the production beat and the requirement of the bumper, improves the production efficiency, improves the labor environment, reduces the labor intensity and the error rate of workers, avoids the manpower loss in the carrying process, and realizes the efficient and intelligent management of the carrying process of the bumper.

In order to achieve the purpose of the invention, the automatic conveying and caching system for the brace tray provided by the invention comprises a lifting unit, a caching warehouse and a transport trolley; one end of the buffer storage is connected with the transport trolley, and the other end of the buffer storage is connected with the lifting unit; the buffer storage comprises a buffer storage lower layer for buffering the brace tray and a buffer storage upper layer for buffering the brace tray with the bumper, and the transport trolley comprises a trolley lower layer for conveying the brace tray and a trolley upper layer for conveying the brace tray with the bumper; the lower layer of the buffer library and the upper layer of the buffer library are respectively butted with the lower layer of the trolley and the upper layer of the trolley for use;

the rack tray is followed the platform truck lower floor gets into one side of buffer library lower floor, buffer store in buffer library lower floor the rack tray removes to the opposite side from one side of buffer library lower floor, and follows buffer library lower floor gets into in proper order lift the unit, get into lift the unit behind the bumper is placed to the rack tray, lift the unit with it promote to with the position that the buffer library upper strata corresponds, place the bumper the rack tray gets into one side of buffer library upper strata, buffer store place the bumper of placing on the buffer library upper strata the rack tray removes to the opposite side from one side of buffer library upper strata, place the bumper the rack tray gets into the platform truck upper strata from the buffer library upper strata.

Furthermore, the lifting unit comprises a lifting tray, a warehouse conveying cylinder, a tray pneumatic stop block, a lifting guide unit, a lifting chain, a lifting driving motor, a guide groove, a lifting fixed support and a warehouse conveying push plate;

the utility model discloses a support, including lifting fixed bolster, lifting drive motor, two chains, lifting cylinder, storehouse push pedal, lifting cylinder, lifting guide unit, lifting drive motor, lifting drive unit.

Further, lift the guide unit and include axial leading wheel, radial leading wheel and connecting plate, connecting plate one side is connected with lifting tray, the opposite side with lift chain fixed connection, vertically set gradually an axial leading wheel, two radial leading wheels and an axial leading wheel of arranging a straight line on the connecting plate, wherein, the shaft of radial leading wheel and axial leading wheel sets up perpendicularly, and the contained angle between the two is 90 degrees, and with the equal sliding connection of lateral wall of guide way.

Further, the cache library also comprises a cache library fixed support, the lower layer of the cache library and the upper layer of the cache library are respectively arranged at the lower side and the upper side of the cache library fixed support,

the lower layer of the buffer storeroom comprises two lower layer speed doubling chains which are arranged on the buffer storeroom fixing supports on the two sides and used in a matched mode, the two lower layer speed doubling chains are driven to rotate by a lower layer driving motor, and the support tray which is empty moves from one side to the other side through the lower layer speed doubling chains;

the upper layer of the buffer storeroom comprises two upper-layer speed-multiplying chains which are arranged on the buffer storeroom fixing supports on the two sides and used in a matched mode, the two upper-layer speed-multiplying chains are driven to rotate through an upper-layer driving motor, and the brace tray provided with the bumper moves from one side to the other side through the upper-layer speed-multiplying chains;

an upper limit sensor and a lower limit sensor for detecting whether the lifting tray is in place are arranged on the buffer library fixed support; the device is provided with an upper layer counting increasing sensor, an upper layer counting decreasing sensor and an upper layer full warehouse sensor, wherein the upper layer counting increasing sensor is used for judging the number of upper layer bumpers of the cache warehouse so as to determine whether the lifting tray can ascend and determine whether an upper layer driving motor drives an upper layer speed doubling chain to rotate or stop;

The buffer library fixing support is provided with a lower layer subtraction sensor and a lower layer addition sensor which are used for judging the number of the empty supporting tool trays at the lower layer of the buffer library and controlling a lower layer driving motor to drive a lower layer speed doubling chain to rotate or stop; the lower-layer warehouse-out pneumatic stop block and the queuing pneumatic stop block are used for queuing and controlling the empty brace tray.

Further, a half-warehouse sensor and a partition pneumatic stop block are arranged on the buffer warehouse fixing support, eight bumpers on the upper layer of the buffer warehouse are divided into two groups through the half-warehouse sensor and the partition pneumatic stop block, and the transport trolley only transports one group at a time; the pneumatic stop block for upper layer delivery stops the other group of bumpers, so that only one group of bumpers can be conveyed to the upper layer of the transportation trolley for carrying away.

Further, be connected one side with the transport table car on the buffer storage fixed bolster and be provided with platform truck fixed cylinder, upwards stretch out through platform truck fixed cylinder piston rod and can tightly be connected transport table car and buffer storage fixed bolster, prevent that the transport table car from receiving the force and sliding in the data send process of each other, cause the unnecessary loss.

Furthermore, the upper layer counting adding sensor, the upper layer full warehouse sensor, the half warehouse sensor, the upper layer counting subtracting sensor, the lower layer counting subtracting sensor and the lower layer counting adding sensor all use photoelectric sensors; the upper limit sensor and the lower limit sensor adopt metal sensors.

Furthermore, the upper-layer counting sensor and the upper-layer full-warehouse sensor are arranged on one side, close to the lifting unit, of the upper layer of the cache warehouse; the middle position of the upper layer of the cache library is installed by the semi-library sensor and the partition pneumatic stop block; the upper-layer reduction sensor is arranged on the side of the transport trolley, and the upper-layer warehouse-out pneumatic stop block and the upper-layer reduction sensor are arranged at the same distance; the lower layer of the buffer storage is arranged at one side of the lower layer of the buffer storage close to the transport trolley; the lower-layer warehouse-out pneumatic stop block and the lower-layer decrement sensor are arranged on one side, close to the lifting unit, of the lower layer of the cache warehouse.

Further, the transportation trolley comprises a trolley support, the trolley upper layer and the trolley lower layer are arranged on the upper side and the lower side of the trolley support respectively, and the trolley lower layer and the trolley upper layer are provided with trolley lower-layer fluency strips and trolley upper-layer fluency strips respectively.

Further, the trolley lower layer and the trolley upper layer are both obliquely arranged with the horizontal plane, the trolley upper layer is high on the left and low on the right, and the trolley lower layer is low on the left and high on the right.

Wherein, the reservoir delivery air cylinder can also be an electric cylinder; the lifting guide unit can also be in the form of a slide rail slide block.

Compared with the prior art, the invention has the beneficial effects that:

(1) The system is provided with the lifting unit, and a worker directly places the bumpers on the empty support tray, so that the possibility of danger caused by the fact that the worker carries the bumpers to a high place can be avoided, and each bumper is protected; the labor intensity of workers and the damage of products are reduced, the manpower and time loss in the carrying process is avoided, and efficient and intelligent production management of the bumper is realized.

(2) The system cache library has an upper layer and a lower layer, and the movement is independently controlled, so that the receiving process of an empty brace tray and the transmission process of a bumper are not interfered with each other; an empty tray queuing area is arranged on the lower layer of the cache library, so that the lifting units can sequentially receive empty trays, and the interference of the lifting units caused by no partition of the support trays is avoided.

(3) The upper layer of the cache library uniformly divides the support trays with the bumpers lifted to the upper layer into four groups by using a half library sensor and a partition pneumatic stop block, so that the four trays are transported on the upper layer of the transport trolley each time, the reduction of the effective utilization rate of space caused by less transportation is avoided, and the phenomenon that excessive trays are supplied to the transport trolley to cause incapability of containing the trays and cause the falling of the excessive trays to cause product damage is also prevented; the bumper can be cached, so that the waiting time of the working efficiency of the transport trolley is reduced, and the efficiency is greatly improved.

(4) The trolley fixing cylinder of the buffer storage tightly connects the transport trolley with the buffer storage, so that the transport trolley is prevented from sliding due to stress in the mutual transmission process, and unnecessary loss is avoided.

(5) The lower floor is designed into the tilting on the transport table car, and assembles fluent strip for empty dish and bumper rely on gravity just can smooth and easy motion, and the empty dish relies on gravity and the drive of lower floor's doubly fast chain to slide to the buffer store lower floor, and the brace tray that has the bumper relies on gravity and the drive of upper strata doubly fast chain to slide to the buffer store upper strata, has reduced the demand to power device.

Drawings

Fig. 1 is a schematic structural diagram of the present application.

FIG. 2 is a schematic structural diagram of a lifting unit of the present application;

FIG. 3 is a schematic structural diagram of a lift guiding unit according to the present application;

FIG. 4 is a schematic diagram of a cache library according to the present application;

FIG. 5 is a partial schematic structural diagram of a cache library of the present application on a side connected to a lifting unit;

FIG. 6 is a partial schematic structural view of a buffer storage according to the present invention at a side where the buffer storage is connected to a transportation trolley;

FIG. 7 is a schematic view of the pneumatic stop of the present application;

FIG. 8 is a schematic view of the transport trolley of the present application;

In the figure, 1-lifting unit, 2-buffer storage, 3-transport trolley, 11-lifting tray, 12-conveying cylinder, 13-tray pneumatic stop, 14-lifting guide unit, 15-lifting chain, 16-lifting drive motor, 17-guide groove, 18-lifting fixed support, 19-conveying push plate, 21-upper limit sensor, 22-upper layer adding number sensor, 23-upper layer full storage sensor, 24-upper layer double speed chain, 25-partition pneumatic stop, 26-half storage sensor, 28-upper layer drive motor, 29-upper layer delivery pneumatic stop, 210-upper layer decrement sensor, 212-lower layer delivery pneumatic stop, 211-empty tray pushing cylinder, 214-lower layer decrement sensor, 213-queuing pneumatic stop, 215-lower layer double-speed chain, 216-lower layer addition sensor, 217-lower layer warehouse entry pneumatic stop, 218-trolley fixed cylinder, 32-trolley lower layer fluency strip and 33-trolley upper layer fluency strip.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

The invention is described in further detail below with reference to the figures and specific examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

As shown in fig. 1 to 8, the technical solution of the present invention for solving the technical problem is to provide an automatic transportation and buffer system for a pallet, which includes a lifting unit 1, a buffer store 2, and a transportation trolley 3;

the lifting unit 1 comprises a lifting tray 11, a warehouse delivery air cylinder 12, a tray pneumatic stop 13, a lifting guide unit 14, a lifting chain 15, a lifting drive motor 16 and a guide groove 17; the buffer storage 2 comprises an upper limiting sensor 21, an upper layer counting sensor 22, an upper layer full storage sensor 23, an upper layer speed doubling chain 24, a partition pneumatic stop 25, a half storage sensor 26, an upper layer driving motor 28, an upper layer storage outlet pneumatic stop 29, an upper layer decrement sensor 210, a lower limiting sensor, a lower layer driving motor, a lower layer storage outlet pneumatic stop 212, an empty disc pushing cylinder 211, a lower layer decrement sensor 214, a queuing pneumatic stop 213, a lower layer speed doubling chain, a lower layer counting sensor, a lower layer storage inlet pneumatic stop, a trolley fixing cylinder 218 and a roller guide device; the transport trolley 3 comprises a trolley lower laminar flow strip 32 and a trolley upper laminar flow strip 33. One end of the buffer storage 2 is connected with the transport trolley 3, and the other end is connected with the lifting unit 1. The transport trolley 3 is delivered from the lower layer and the bumper is taken from the upper layer, and then the transport trolley 3 is pulled away.

The lifting unit 1 comprises a lifting tray 11, a warehouse delivery cylinder 12, a tray pneumatic stop 13, a lifting guide unit 14, a lifting chain 15, a lifting drive motor 16 and a guide groove 17.

Two sides of the lifting tray 11 are respectively provided with a row of small wheels which can receive the empty supporting tray and the transmission bumper without hindrance;

the warehouse conveying cylinder 12 is arranged on the lifting tray 11 and moves up and down along with the lifting tray 11, and the warehouse conveying cylinder 12 adopts a parallel cylinder, so that the movement process is stable; the tray pneumatic stop 13 can prevent the tray from sliding in the processes of manually carrying the bumper and lifting the tray 11; the lifting guide unit 14 comprises radial and axial guide wheels which are in close contact with the lifting chain 15 and the guide groove 17 at an angle of ninety degrees; the lifting driving motor 16 drives the lifting tray 11 to lift, and the lifting driving motor 16 uses a common alternating current motor and drives a group of chains to move through a speed reducing device.

The buffer storage 2 comprises an upper limiting sensor 21, an upper layer counting sensor 22, an upper layer full storage sensor 23, an upper layer speed doubling chain 24, a partition pneumatic stop 25, a half storage sensor 26, an upper layer driving motor 28, an upper layer storage outlet pneumatic stop 29, an upper layer counting reduction sensor 210, a lower limiting sensor, a lower layer driving motor, a lower layer storage outlet pneumatic stop 212, an empty disc pushing cylinder 211, a lower layer counting reduction sensor 214, a queuing pneumatic stop 213, a lower layer speed doubling chain, a lower layer counting sensor, a lower layer storage inlet pneumatic stop, a trolley fixing cylinder 218 and a roller guide device. An upper limit sensor 21 and a lower limit sensor detect whether the lifting tray 11 is in place; the upper layer counting adding sensor 22, the upper layer counting reducing sensor 210 and the upper layer full storage sensor 23 judge the number of the upper layer bumpers of the cache storage 2 so as to determine whether the lifting tray 11 rises and determine whether the upper layer driving motor 28 drives the upper layer speed doubling chain 24 to rotate or stop; the half-warehouse sensors 26 and the partition pneumatic stop blocks 25 divide eight bumpers at most on the upper layer into two groups, and the transport trolley 3 transports one group at a time; the pneumatic stop block 29 for the upper layer warehouse-out stops the next group of bumpers, so that only one group can be conveyed to the upper layer of the transportation trolley 3 for transportation; the lower layer decrement sensor 214 and the lower layer addition sensor judge the number of the empty support trays at the lower layer of the cache library 2 and determine whether the lower layer driving motor drives the lower layer speed doubling chain to rotate or stop; the lower-layer warehouse-out pneumatic stop block 212 and the queuing pneumatic stop block 213 only allow an empty support tray to enter the queuing position, and the work of the lifting tray 11 is not influenced; the empty tray pushing cylinder 211 pushes the empty support tray at the queuing position to the lifting tray 11; the lower-layer warehouse-in pneumatic stop block blocks the empty supporting tray from the lower layer of the transport trolley 3 when the lower layer of the cache warehouse 2 is full; the trolley fixing cylinder 218 extends to fix the trolley after the transportation trolley 3 is connected with the buffer storage 2, and then the system can receive the empty brace tray and the transmission bumper. The roller guide device enables the transport trolley 3 to be accurately connected with the cache library 2 (not shown in the figure);

The transport trolley 3 comprises a trolley lower laminar flow strip 32 and a trolley upper laminar flow strip 33. The upper layer and the lower layer of the transportation trolley 3 form a certain angle, and fluent strips are assembled on the upper layer and the lower layer, so that power is not needed for transmission and bumper receiving of an empty brace tray.

The control system of the whole system comprises a controller, a communication device, a manual input signal and a sensor signal; the controller judges various signals respectively through the communication device to control the accurate operation of the whole system.

The working process is as follows:

after the lifting unit 1 (see fig. 2) receives the empty support tray from the buffer storage 2, the empty support tray is fixed in the lifting tray 11 by the tray pneumatic stop 13, the bumper is manually placed on the empty support tray, and the control box set aside separately is pressed, the control system sends out a signal to enable the lifting driving motor 16 to rotate forward to drive the lifting chain 15 to rotate, the lifting chain 15 drives the lifting tray 11 to slowly move up along the guide slot 17 through the lifting guide unit 14, after the upper limit sensor 21 of the buffer storage 2 detects the lifting tray 11, the lifting driving motor 16 stops rotating, after the tray pneumatic stop 13 descends to the proper position, the storage conveying cylinder 12 pushes the empty support tray on which the bumper is placed to the upper layer of the buffer storage 2, the control system controls the lifting driving motor 16 to rotate reversely to drive the lifting tray 11 to descend, after a lower limit sensor (not shown) of the buffer storage 2 detects the lifting tray 11, the motor stops rotating and enters the next working cycle.

After the cache library 2 (see fig. 3) is connected with the transport trolley 3 in place through the roller guide device, a control box set aside is manually pressed, and the trolley fixing cylinder 218 extends out to grasp the transport trolley 3; the mechanical stop blocks on the upper layer and the lower layer of the transportation trolley are manually opened, so that the lower layer input and the upper layer output of the brace tray are facilitated.

The number of the empty support trays at the lower layer of the buffer storage 2 is judged through the lower layer adding sensor and the lower layer subtracting sensor 214, if the number is less than eight, the lower layer storage entering pneumatic stop block acts, the empty support trays slide to the lower layer speed doubling chain, and when the number of the empty support trays at the lower layer of the buffer storage 2 is equal to eight, the lower layer storage entering pneumatic stop block recovers.

When the lifting tray 11 descends to the proper position, the queuing pneumatic stop block 213 acts, the lower driving motor starts to rotate, the empty support tray at the queuing position is conveyed forwards, and then the empty support tray pushing cylinder extends out to push the empty support tray onto the lifting tray 11. Then the queuing pneumatic stop 213 is recovered, the lower ex-warehouse pneumatic stop 212 is operated, the next empty brace tray is conveyed forward to the queuing position, the lower ex-warehouse pneumatic stop 212 is recovered, the rear empty brace tray is conveyed forward for a certain distance in sequence, and the lower driving motor stops rotating.

After the upper layer of the buffer storage 2 receives the empty supporting tray with the bumpers, if the control system judges that the number of the bumpers on the upper layer is less than or equal to eight through the detection signals of the upper layer counting sensor 22 and the upper layer counting reduction sensor 210, the partition pneumatic stop blocks 25 recover, the upper layer warehouse-out pneumatic stop blocks 29 act, the upper layer driving motor 28 starts to rotate, the bumpers start to be transmitted, and the front group of four bumpers are transmitted to the upper layer of the transport trolley 3.

Then the upper-layer delivery pneumatic stop 29 is restored, the zoning pneumatic stop 25 is actuated, the second group of bumpers is conveyed to the front,

when the half-bank sensor 26 detects a signal for a long time indicating that the previous set of four has been reached, the zonal pneumatic stops 25 are restored. The trolley fixing cylinder 218 should be retracted at this time and no longer hold the transport trolley 3.

If the upper sensors detect signals and the whole system does not receive the signals coming from the transport trolley 3, the number of the bumpers on the upper layer of the cache library 2 reaches the maximum value, and the whole system should stop running.

The transport vehicle 3 (see fig. 8) moves the transport vehicle 3 to another place by the tractor after receiving a signal that the buffer storage 2 has finished transmitting a set of bumpers, and pulls the transport vehicle 3 additionally loaded with empty rack trays for the next cycle.

It should be noted that, the tray pneumatic stop block, the partition pneumatic stop block, the upper layer warehouse-out pneumatic stop block, the lower layer warehouse-out pneumatic stop block, the queuing pneumatic stop block and the lower layer warehouse-in pneumatic stop block in the present application can all adopt the structure shown in fig. 8, and one stop block is driven by one air cylinder to realize the ascending or descending of the stop block.

The technical means not described in detail in the present application are known techniques.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. An automatic conveying and caching system for support trays is characterized by comprising a lifting unit, a caching warehouse and a transport trolley; one end of the buffer storage is connected with the transport trolley, and the other end of the buffer storage is connected with the lifting unit; the buffer storage comprises a buffer storage lower layer for buffering the brace tray and a buffer storage upper layer for buffering the brace tray with the bumper, and the transport trolley comprises a trolley lower layer for conveying the brace tray and a trolley upper layer for conveying the brace tray with the bumper; the lower layer of the buffer library and the upper layer of the buffer library are respectively butted with the lower layer of the trolley and the upper layer of the trolley for use;

2. The automatic conveying and caching system for the brace trays as claimed in claim 1, wherein the lifting unit comprises a lifting tray, a warehouse conveying cylinder, a tray pneumatic stop block, a lifting guide unit, a lifting chain, a lifting drive motor, a guide groove, a lifting fixed support and a warehouse conveying push plate;

the utility model discloses a support, including lifting the fixed bolster, lifting the fixed bolster and all forming the guide way for U type or other types of support, its both sides support inboard, it lifts driving motor to install on the fixed bolster, including direct current servo, exchange servo or step motor, it drives two lifting chains that set up in the guide way and rotates to lift driving motor, and two lifting chains are equallyd divide and are connected with one side of lifting the tray through lifting the guide unit respectively, and drive it goes up and down to lift the tray, it sends the storehouse cylinder to be provided with on the tray to lift, send the storehouse cylinder to be connected with and send the storehouse push pedal and can drive send the storehouse push pedal to remove, it is provided with the dog cylinder on the tray to lift, install the pneumatic dog of tray on the dog cylinder, through the pneumatic dog of tray rises, can realize the spacing of brace tray.

3. The automatic conveying and caching system for the brace trays as claimed in claim 2, wherein the lifting guide unit comprises an axial guide wheel, a radial guide wheel and a connecting plate, one side of the connecting plate is connected with the lifting tray, the other side of the connecting plate is fixedly connected with the lifting chain, the connecting plate is longitudinally and sequentially provided with the axial guide wheel, the two radial guide wheels and the axial guide wheel which are arranged in a straight line, wheel shafts of the radial guide wheel and the axial guide wheel are vertically arranged, an included angle between the radial guide wheel and the axial guide wheel is 90 degrees, and the radial guide wheel and the axial guide wheel are in sliding connection with side walls of the guide grooves.

4. The automatic transporting and buffering system for brace trays of claim 1, wherein the buffer library further comprises a buffer library fixing support, the lower layer of the buffer library and the upper layer of the buffer library are respectively arranged at the lower side and the upper side of the buffer library fixing support,

5. The automatic conveying and caching system for the brace trays as claimed in claim 4, wherein the cache library fixing support is provided with a half library sensor and a partition pneumatic stop, eight bumpers on the upper layer of the cache library are divided into two groups through the half library sensor and the partition pneumatic stop, and the conveying trolley only conveys one group at a time; the pneumatic stop block for upper layer delivery stops the other group of bumpers, so that only one group of bumpers can be conveyed to the upper layer of the transportation trolley for carrying away.

6. The automatic conveying and buffering system for the brace trays as claimed in claim 4, wherein a trolley fixing cylinder is arranged on one side of the buffer storage fixing support connected with the transport trolley, and the transport trolley and the buffer storage fixing support can be tightly connected by the upward extension of a piston rod of the trolley fixing cylinder, so that the transport trolleys are prevented from sliding due to stress in the mutual conveying process, and unnecessary loss is avoided.

7. The automatic conveying and caching system for the brace trays as claimed in claim 4, wherein the upper layer addend sensor, the upper layer full warehouse sensor, the half warehouse sensor, the upper layer decrement sensor, the lower layer decrement sensor and the lower layer addend sensor all use photoelectric sensors or mechanical touch switch type sensors; the upper limit sensor and the lower limit sensor adopt metal sensors.

8. The automatic transportation buffer system for supporting trays of claim 4, wherein the upper layer counting sensor and the upper layer full warehouse sensor are arranged on one side of the upper layer of the buffer warehouse close to the lifting unit; the middle position of the upper layer of the cache library is installed by the semi-library sensor and the partition pneumatic stop block; the upper-layer reduction sensor is arranged on the side of the transport trolley, and the upper-layer warehouse-out pneumatic stop block and the upper-layer reduction sensor are arranged at the same distance; the lower layer of the buffer storage is arranged at one side of the lower layer of the buffer storage close to the transport trolley; the lower-layer warehouse-out pneumatic stop block and the lower-layer decrement sensor are arranged on one side, close to the lifting unit, of the lower layer of the cache warehouse.

9. The automatic conveying and buffering system for the brace trays as claimed in claim 1, wherein the transportation trolley comprises a trolley support, the trolley upper layer and the trolley lower layer are respectively arranged on the upper side and the lower side of the trolley support, and the trolley lower layer and the trolley upper layer are respectively provided with trolley lower-layer fluency strips and trolley upper-layer fluency strips.

10. The automatic conveying and caching system for the brace trays of claim 9, wherein the trolley lower layer and the trolley upper layer are inclined to the horizontal plane, and the trolley upper layer is higher at the left and lower at the right, and the trolley lower layer is higher at the left and lower at the right.