CN113581818A

CN113581818A - Conveying line

Info

Publication number: CN113581818A
Application number: CN202110951045.7A
Authority: CN
Inventors: 孙夏露; 朱瑞良; 郭冰涛; 金开云; 马亚飞; 魏鹏飞; 张青春; 齐江飞; 高春生; 朱本正; 赵茂松; 陈显; 姚得强; 魏辉; 樊睿璇
Original assignee: Zhongqi Changxing Luoyang Electromechanical Equipment Engineering Co ltd; China Automobile Industry Engineering Co Ltd; Scivic Engineering Corp
Current assignee: Zhongqi Changxing Luoyang Electromechanical Equipment Engineering Co ltd; China Automobile Industry Engineering Co Ltd; Scivic Engineering Corp
Priority date: 2021-08-18
Filing date: 2021-08-18
Publication date: 2021-11-02

Abstract

The invention relates to a conveying line, which is provided with a feeding position and a discharging position, and comprises a feeding line and a returning line, wherein the feeding line is used for conveying a tray and materials from the feeding position to the discharging position, and the returning line is used for returning an empty tray from the discharging position to the feeding position; the feeding line and the returning line respectively comprise a ground part and an aerial part which are positioned at two ends, the conveying line comprises a bracket for supporting the aerial part, and the aerial parts of the feeding line and the returning line extend in parallel; the conveying line also comprises a lifter, the lifter is arranged at the intersection position of the ground part and the air part to realize the lifting of the tray and the materials, and a conveying unit for realizing the conveying of the materials is arranged on the lifter; the conveying line further comprises a transfer mechanism, the transfer mechanism is arranged at the discharging position of the conveying line, and the transfer mechanism is used for transferring the unloaded empty tray to the return line.

Description

Conveying line

Technical Field

The invention relates to a conveying line.

Background

The battery is used as a core part of the new energy automobile, so that the safety of the automobile is concerned, and the service life of the automobile directly influences the later cost of the automobile. In order to improve the production efficiency of the whole new energy automobile, batteries are usually produced separately from a whole automobile manufacturing production line, and the batteries need to be supplied to the whole automobile production line in time.

Among the prior art, the battery that new energy automobile used is when transporting, and the mode that adopts semi-automatization mostly goes on, and the manual work is operated battery haulage equipment and is transported. Although the semi-automatic mode is simple to operate and low in equipment cost, the battery damage condition caused by manual intervention is low in efficiency, manpower consumption and potential safety hazards exists in the carrying process. The battery is placed and is transported on the tray, but can't carry out the automation to the tray after being transported to whole car production line and return, needs the manpower to return, and intensity of labour is big, and it is slow to return speed.

Disclosure of Invention

The invention aims to provide a conveying line, which aims to solve the technical problems of low conveying efficiency, damage risk, high labor intensity and low returning speed caused by manual returning of empty trays in the prior art.

In order to achieve the purpose, the technical scheme of the conveying line provided by the invention is as follows: a conveyor line having a loading level and a unloading level, the conveyor line comprising:

the feeding line is used for conveying the tray and the materials from the feeding position to the discharging position, and the returning line is used for conveying the empty tray from the discharging position to the feeding position in a returning process;

the feeding line and the returning line respectively comprise a ground part and an aerial part which are positioned at two ends, the conveying line comprises a bracket for supporting the aerial part, and the aerial parts of the feeding line and the returning line extend in parallel;

the conveying line also comprises a lifter, the lifter is arranged at the intersection position of the ground part and the air part to realize the lifting of the tray and the materials, and a conveying unit for realizing the conveying of the materials is arranged on the lifter;

the conveying line further comprises a transfer mechanism, the transfer mechanism is arranged at the discharging position of the conveying line, and the transfer mechanism is used for transferring the unloaded empty tray to the return line.

Has the advantages that: through setting up the stockline, returning line and transfer mechanism, can carry the material that needs were carried to the material level down automatically, safe and reliable, the empty tray after will unloading simultaneously returns and carries supreme material level department, transports inefficiency and has damage risk and need artifical mode of returning empty tray to compare among the prior art, has saved the manpower and can realize carrying fast, returning in succession, safe and reliable. The conveying line provided by the invention has the ground part and the air part, the materials are transferred between the ground part and the air part through the lifter, the ground space can be saved, the factory building is fully utilized, other assembly lines or other objects on the ground are avoided, and the overall layout is more reasonable.

Preferably, the transfer mechanism is a transfer machine, and the transfer machine comprises a linear rail spanned between the feeding line and the blanking conveying line, and the conveying unit assembled on the linear rail in a sliding manner. The transfer machine capable of linearly reciprocating is arranged to convey and return the tray, so that the structure is simple and the cost is low.

Preferably, the aerial parts of the feeding line and the returning line are provided with turning positions, and rotary conveying mechanisms are arranged at the turning positions;

the rotary conveying mechanism comprises an annular track and the conveying unit which is assembled on the annular track in a sliding mode. The material loading line and the return line can be turned according to the actual condition of a factory building, and are conveyed in a rotating mode through the rotating conveying mechanism, and the arrangement requirements of the material loading line and the return line in different shapes are met.

Preferably, the aerial part of the loading line comprises a main branch and at least two branches;

a transitional machine is arranged at the intersection position of the main road and each branch road so as to correspondingly communicate the main road with one branch road;

the transfer machine comprises a linear track spanned between the branches and the conveying unit which is assembled on the linear track in a sliding way. Through setting up two at least branches, can improve the conveying capacity and the storage capacity of material loading line.

Preferably, the main path and the branch paths respectively comprise the conveying units which are sequentially arranged at intervals, and the conveying units on the main path and the branch paths are arranged at two layers at intervals along the up-down direction;

the transitional machine at the intersection position of the main road and each branch road correspondingly comprises two layers of conveying units which are arranged at intervals along the vertical direction, and the distance between the two layers of conveying units on the transitional machine is equal to the distance between the two layers of conveying units on the main road and the branch road. Through setting up two-layer conveying unit, can improve conveying capacity and storage capacity, also can select two-layer conveying unit syntropy to carry or carry different modes such as in opposite directions simultaneously according to actual need, also can the one deck carry the material, empty tray is returned to the one deck to carry, and the mode of use is more nimble.

Preferably, the return line comprises a stacking conveyor, the two ends of the return line are provided with stacking/unstackers, the stacking/unstackers near the discharging level are used for stacking trays, and the stacking/unstackers near the feeding level are used for unstacking stacked trays.

Preferably, the feeding line comprises a single-layer conveying area and a double-layer conveying area, the aerial part of the feeding line is positioned in the double-layer conveying area, and the feeding position and the discharging position of the feeding line are both the single-layer conveying area;

the feeding line is provided with lifting platform components at the crossing positions of the single-layer conveying area and the double-layer conveying area, each lifting platform component comprises a lifting platform capable of lifting, and the conveying units are arranged on the lifting platforms to realize switching between single-layer conveying and double-layer conveying.

Preferably, the lifting platform is arranged on the ground;

the elevators on the feeding line are double-layer elevators, and each double-layer elevator comprises two layers of conveying units which are arranged at intervals in the vertical direction;

the double-layer conveying area comprises two layers of conveying units which are arranged at intervals up and down, each layer comprises at least two conveying units which are arranged at intervals in sequence, and the distance between the two layers of conveying units in the double-layer conveying area is equal to the distance between the two layers of conveying units on the double-layer lifter.

Preferably, the feed line, return line share a ground portion at the feed level;

the conveying line further comprises a transfer machine located at the feeding position, the transfer machine comprises a linear rail spanned between the feeding line and the blanking conveying line, and the conveying units are assembled on the linear rail in a sliding mode.

Preferably, the conveying unit is a roller machine, and the roller machine comprises a frame at the bottom, a roller rotatably mounted on the frame, and a supporting wheel arranged on the roller and used for supporting the conveying tray.

Drawings

FIG. 1 is a layout of an embodiment of the conveyor line of the present invention;

FIG. 2 is a schematic view of the structure of the conveying line of the present invention at a loading position (only one layer of roller is shown in the hollow part of the drawing);

FIG. 3 is a schematic view of the structure of an embodiment of the conveyor line of the present invention at a loading position;

FIG. 4 is a schematic diagram of a double-deck roller bed elevator in an embodiment of the conveyor line of the present invention;

FIG. 5 is a schematic structural view of a double-deck roller bed in an embodiment of the conveyor line according to the present invention;

FIG. 6 is a schematic view of the structure of an embodiment of the lift table assembly of the conveyor line of the present invention;

FIG. 7 is a schematic illustration of a double-deck transitional machine in an embodiment of the conveyor line of the present invention;

FIG. 8 is a schematic structural view of a double-deck rotary rolling machine in an embodiment of the conveyor line according to the present invention;

FIG. 9 is a schematic illustration of a stacker/unstacker in an embodiment of the conveyor line of the present invention;

description of reference numerals:

1. a single-layer rolling bed; 2. a first lift table assembly; 3. a double-layer rolling bed; 4. a first double-layer transfer machine; 5. a first double-deck roller bed elevator; 6. an aerial portion; 7. a double-layer rotary rolling machine; 8. a third double-layer transfer machine; 9. a fourth double-layer transitional machine; 10. a second double-deck roller bed elevator; 11. a second lift table assembly; 12. a single-layer transfer machine; 13. a first stacker/unstacker; 14. a first lifter; 15. a power and free conveyor; 16. rotating the rolling machine; 17. a second stacker/unstacker; 18. a second double-layer transfer machine; 19. a second lifter; 20. an elevator frame; 21. a cargo carrying platform; 22. a lifter heightening frame; 23. rolling the bed; 24. a support; 25. a double-layer rolling machine frame; 26. a lifting platform; 27. a linear track; 28. a machine-moving support frame; 29. a frame of the line shifter; 30. an annular track; 31. rotating the rolling bed support frame; 32. rotating the rolling machine frame; 33. a tray; 34. a support bar; 35. a stacking rack; 100. a feeding line; 200. and returning the wire.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.

It is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, elements recited by the phrase "comprising an … …" do not exclude the inclusion of such elements in processes or methods.

In the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" when they are used are to be construed broadly, e.g., as meaning a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intervening media, or may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art from specific situations.

In the description of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the term "provided" may be used in a broad sense, for example, the object of "provided" may be a part of the body, or may be arranged separately from the body and connected to the body, and the connection may be a detachable connection or a non-detachable connection. The specific meaning of the above terms in the present invention can be understood by those skilled in the art from specific situations.

The present invention will be described in further detail with reference to examples.

The specific embodiment 1 of the conveying line provided by the invention:

as shown in fig. 1 to fig. 9, the present embodiment is described by taking the transfer of the battery between the battery production workshop and the whole vehicle assembly workshop as an example, and it should be noted that the conveying line of the present invention is also applicable to other materials that need to be supported and transferred by using a tray.

As shown in fig. 1, the conveyor line has a loading position in a battery production plant or warehouse and a unloading position in a vehicle assembly plant. The conveying line integrally comprises a feeding line 100 and a returning line 200, wherein the feeding line 100 is used for conveying the tray 33 fully loaded with the batteries from a feeding position to a discharging position, and the returning line 200 is used for returning and conveying the empty tray 33 unloaded with the batteries from the discharging position to the feeding position, so that the tray 33 can be recycled. In order to make full use of the factory building and other assembly lines that avoid the ground, the feed line 100 and the return line 200 in this embodiment each include a ground portion to which a support 24 is fixed and an aerial portion 6 on which the aerial portion 6 is mounted on the support 24.

As shown in fig. 1, a first lifting table assembly 2, a double-layer rolling machine 3, a first double-layer transfer machine 4, a first double-layer rolling machine elevator 5, a second double-layer transfer machine 18, a double-layer rolling machine 3, a double-layer rotating rolling machine 7, a double-layer rolling machine 3, a third double-layer transfer machine 8, a fourth double-layer transfer machine 9, a second double-layer rolling machine elevator 10, a double-layer rolling machine 3, and a second lifting table assembly 11 are arranged in the feeding line 100 in sequence from the feeding position to the discharging position; the return line 200 is provided with a first stacker/unstacker 13, a first elevator 14, a stacking conveyor 15, a rotary roller bed 16, a single-layer roller bed 1, a second stacker/unstacker 17, a second double-layer transfer machine 18, a second elevator 19 and a first double-layer transfer machine 4 which are arranged in sequence from the blanking position to the loading position. Wherein the feeding line and the return line share a first double-layer transfer machine 4 and a second double-layer transfer machine 18. The number of the double-layer rolling machines 3 or the single-layer rolling machines 1 can be increased or decreased according to actual conditions. The conveyor line further comprises a single-level transfer machine 12 at the lowering level, the single-level transfer machine 12 being capable of receiving the trays 33 of the second lift table assembly 11 and the batteries and transferring the empty trays 33 onto the return line 200. The single-deck transfer machine 12 forms a transfer mechanism capable of transferring discharged empty pallets to the return line 200.

As shown in fig. 1, the first double-deck transfer machine 4 spans the loading line 100 and the return line 200, and transfers the battery and the tray 33 to the first double-deck roller elevator 5 during loading, and receives the tray 33 transferred by the second elevator 19 during return. The second double-deck machine 18 functions similarly to the first double-deck machine 4. In actual use, either the first double-deck transfer machine 4 or the second double-deck transfer machine 18 may use only one deck of rollers.

In this embodiment, as shown in fig. 1, each component in the feeding line 100 from the first lifting platform component 2 to the second lifting platform component 11 is a double-layer structure, which can improve the conveying efficiency and the storage capacity of the feeding line 100. The structure of the double-layer roller machine 3 in the feeding line 100 is shown in fig. 5, the double-layer roller machine 3 comprises a double-layer roller machine frame 25, and a double-layer roller machine 23 is fixedly mounted on the double-layer roller machine frame 25, wherein the roller machine 23 is in the prior art and comprises a frame, a roller rotatably mounted on the frame, and a supporting wheel fixed on the roller, the supporting wheel is used for supporting the tray 33, and the tray 33 is conveyed through the rotation of the roller.

The first lifting platform assembly 2 and the second lifting platform assembly 11 can realize switching between single-layer and double-layer, the structure of the first lifting platform assembly is shown in fig. 6, the lifting platform assembly comprises a lifting platform 26, a roller bed 23 is fixedly assembled on the lifting platform 26, the height of the roller bed 23 is changed by lifting of the lifting platform 26, so that a tray on the single-layer roller bed 1 can be conveyed to the double-layer roller bed 3, and the double-layer tray on the double-layer roller bed 3 can be detached into a single layer. The lifting platform 26 of this embodiment is a scissor-type lifting platform, and in other embodiments, the lifting platform may be a hydraulic cylinder, an air cylinder, or an electric push rod driven structure.

As shown in fig. 1, the feeding line 100 has a turning position, and in order to realize turning transportation of the tray 33 and the battery, a double-deck rotary roller machine 7 is fixed at the turning position, and the structure of the double-deck rotary roller machine 7 is as shown in fig. 8, the double-deck rotary roller machine 7 comprises an annular rail 30, a rotary roller machine support frame 31 is slidably mounted on the annular rail 30, and the rotary roller machine support frame 31 can rotate on the annular rail 30, specifically, the rotary roller machine support frame 31 is driven by a motor to rotate. The roller bed 23 on one layer is directly installed on the support frame 31 of the rotary roller bed, the roller bed 23 on the other layer is installed through the frame 32 of the rotary roller bed, the roller beds 23 on the two layers are spaced in the vertical direction, the distance between the vertical direction and the vertical direction of the roller beds 23 in the double-layer roller bed 3 are both capable of being simultaneously conveyed.

Wherein, the structure of the double-deck roller bed lifter (including the first double-deck roller bed lifter 5 and the second double-deck roller bed lifter 10) in the feeding line 100 is as shown in fig. 4, and includes a common lifter and a roller bed 23 installed on the lifter, the lifter includes a lifter frame 20, a cargo carrying platform 21 is slidably assembled on the lifter frame 20, one deck roller bed 23 is directly installed on the cargo carrying platform 21, another deck roller bed 23 is also installed through a lifter heightening frame 22, the two-deck roller beds 23 are spaced from each other up and down, and the distance from each other up and down is equal to the distance from each other up and down of the two-deck roller bed 23 in the double-deck roller bed 3.

As shown in fig. 7, the double-deck moving machine (including the first double-deck moving machine 4, the second double-deck moving machine 18, the third double-deck moving machine 8 and the fourth double-deck moving machine) includes a linear rail 27, a moving machine support 28 is slidably assembled on the linear rail 27, a first-deck rolling bed 23 is directly assembled on the moving machine support 28, a moving machine frame 29 is also fixedly assembled, a second-deck rolling bed 23 is installed on the moving machine frame 29, the two-deck rolling beds 23 are arranged at intervals up and down, and the interval between the up and down is equal to the interval between the up and down of the two-deck rolling beds in the double-deck rolling bed 3. As shown in fig. 1, the linear rails 27 of the first double-deck transfer machine 4 and the second double-deck transfer machine 18 span between the loading line 100 and the return line 200, and the linear rails 27 of the third double-deck transfer machine 8 and the fourth double-deck transfer machine 9 span between the two rows of double-deck rolling beds 3.

As shown in fig. 1, the single row double-deck roller bed 3 is located upstream (near the loading position) of the third double-deck transfer machine 8 in the loading line 100 to form a main lane, two rows of double-deck roller beds 3 are located between the third double-deck transfer machine 8 and the fourth double-deck transfer machine 9 to form two branch lanes, the third double-deck transfer machine 8 functions to distribute trays 33 on the main lane on two branch lanes, and the fourth double-deck transfer machine 9 functions to transfer trays 33 on two branch lanes to the second double-deck roller bed elevator 10.

As shown in fig. 9, the stacker/unstacker (including the first stacker/unstacker 13 and the second stacker/unstacker 17) includes a lift table 26 and a roller bed 23 mounted on the lift table 26, and the lift table 26 can lift and lower the roller bed 23. Two sides of the lifting platform 26 are respectively provided with a stacking frame 35, the stacking frame 35 is rotatably provided with a support rod 34 around a vertical axis, and at least two support rods arranged along the conveying direction of the rolling machine 23 are arranged on each side of the stacking frame 35. In use, stacking and unstacking is achieved by raising and lowering the lift table 26 and rotating the support bar 34, and the stacking/unstacking machine is prior art and will not be described in detail herein.

The structure of the power and free conveyor belt is the prior art, and reference can be specifically made to the Chinese utility model patent with the publication number of CN 201330057Y.

In this embodiment, the first lifter 14, the second lifter 19, and the rotary rolling machine 16 on the return line 200 may be a single-layer rolling machine structure, and the single-layer first lifter 14, the second lifter 19, and the rotary rolling machine 16 actually have a corresponding structure with one layer of the rolling machine removed; the double-layer structure can also be directly selected, and only a single layer is suitable for use. Similarly, the single-layer roller bed 1 in the return line 200 may be replaced with the double-layer roller bed 3, and only one layer may be used.

In this embodiment, the single-deck machine 12 is similar in structure to the double-deck machine, except that the single-deck rolling bed 23 is removed, but actually, the single-deck machine 12 may be replaced with the double-deck machine, and only the single-deck rolling bed 23 may be operated when used.

The using process of the invention is as follows: when the battery is on line, the battery is hoisted on the first lifting platform assembly 2, the first lifting platform assembly 2 conveys the battery to the double-layer rolling machine 3, the first double-layer transfer machine 4 moves to the position corresponding to the feeding line 100, the battery and the tray on the double-layer rolling machine 3 are transferred to the first double-layer rolling machine lifter 5 and are lifted to the high altitude by the first double-layer rolling machine lifter 5, and the second double-layer transfer machine 18 moves to the position corresponding to the feeding line 100. Then the batteries and the trays are conveyed to the double-layer rolling beds 3 in different paths through a third double-layer transfer machine 8, when the batteries and the trays move to the tail end of the high altitude, the batteries and the trays are transferred to a second double-layer rolling bed lifter 10 through a fourth double-layer transfer machine 9, the batteries and the trays are brought to the ground through the second double-layer rolling bed lifter 10, the double layers are changed into single layers through a second lifting platform assembly 11, the single layers are conveyed to the single-layer rolling bed 1 at a blanking position through the single-layer rolling bed 1 and the single-layer transfer machine 12, and the batteries are lifted down through a lifting tool. The empty pallet is transported to the return line 200 by the single-layer transfer machine 12, stacked by the first stacker/unstacker 13, lifted to the high altitude by the first elevator 14, transported to the rotary rolling bed 16 by the stacking conveyor 15, unstacked by the second stacker/unstacker 17, and transported to the upper material level by the second double-layer transfer machine 18, the second elevator 19, and the first double-layer transfer machine 4 in sequence.

When the feeding line is actually used, the double-layer rolling machine 3 of the feeding line 100 can improve the storage capacity of the feeding line 100, and the upper and lower layers of rolling machines can convey trays and motors in the same direction, so that the conveying efficiency is improved; the batteries can be conveyed in opposite directions, so that when the batteries conveyed in the front direction are not of the required type, the batteries which are not required can be returned to another layer by the double-layer transfer machine for temporary storage; when the return of the return line 200 is not coming, one of the tiers of rollers may also be used to return empty pallets for delivery. In other words, in the actual use process, the conveying direction of the roller bed can be changed according to the actual use condition so as to ensure the normal operation of the conveying line.

In this embodiment the single-deck transfer machine 12 forms a transfer mechanism capable of transporting empty trays between the supply line 100 and the return line 200, in other embodiments the transfer mechanism may be a robotic arm that grabs empty trays and onto the return line after the batteries have been lifted off.

In this embodiment, the roller machine constitutes a conveying unit, and in other embodiments, other conveying manners may be adopted, for example, the conveying unit includes a frame and a belt transmission mechanism or a chain transmission mechanism on the frame, the belt transmission mechanism conveys materials by a belt, and the belt transmission mechanism drives the belt to move by a belt wheel; the chain transmission mechanism conveys materials by means of a chain and drives the chain to move by means of a chain wheel.

In this embodiment, both the double-layer rotary rolling machine and the single-layer rotary rolling machine constitute a rotary conveying mechanism, which includes an endless track and a conveying unit, and in other embodiments, the conveying unit may be changed.

In this embodiment, the air portion of the feeding line includes a main path and two branches. In other embodiments, the number of branches may be increased according to actual situations, and is three or more, and of course, there may be only one branch.

In this embodiment, a double-layer conveying area is formed in a part of the feeding line between the two lifting table assemblies, and a single-layer conveying area is formed in the upstream of the first lifting table assembly and the downstream of the second lifting table assembly. In other embodiments, the feeding line may be a single-layer conveying area as a whole, and the corresponding roller machine, elevator, transfer machine, rotary roller machine, etc. are all changed into a single-layer structure. The lift table assembly can now be eliminated. In other embodiments, three layers of conveying areas can be arranged between the two lifting platform assemblies, so that the conveying capacity and the storage capacity are further improved.

In other embodiments, because the stacker/unstacker of the present embodiment includes a lift table and a roller bed, the lift table assembly may be replaced with a stacker/unstacker.

In this embodiment, the material loading line and the return line share the ground part at the material loading position, and a transfer machine is correspondingly arranged. In other embodiments, the load line and the return line each have a ground portion at the load level, in which case the line shifter at the load level may be eliminated.

In this embodiment, stacking and unstacking of empty trays can be realized by arranging the stacking/unstacking machine, and centralized return conveying after a plurality of stacks is realized. In other embodiments, the stacker/unstacker is eliminated and each pallet is fed back in a single layer. In other embodiments, multiple roller beds in series may be used in place of the accumulation conveyor.

In this embodiment, the material loading line all has the turn position with the line of returning, and turn position department sets up rotatory conveying mechanism and carries out the switching-over. In other embodiments, the common conveyor belt is used for replacing the roller beds which are arranged in sequence, and the rotary conveying mechanism can be cancelled, so that the conveyor belt is directly laid for reversing conveying. In other embodiments, the feed line and the return line may no longer have a turning position, and correspondingly, the rotary conveyance mechanism is eliminated.

Finally, although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments without departing from the inventive concept, or some of the technical features may be replaced with equivalents. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A conveyor line, its characterized in that: have material loading position and unloading position, the transfer chain includes:

the feeding line (100) is used for conveying the trays (33) and materials from a feeding position to a discharging position, and the return line (200) is used for conveying the empty trays (33) from the discharging position to the feeding position;

the feeding line (100) and the return line (200) comprise a ground part and an aerial part (6) at two ends, the conveying line comprises a bracket (24) for supporting the aerial part (6), and the aerial parts (6) of the feeding line (100) and the return line (200) extend in parallel;

the conveying line also comprises a lifter, the lifter is arranged at the intersection position of the ground part and the air part (6) to realize the lifting of the tray (33) and the materials, and the lifter is provided with a conveying unit for realizing the conveying of the materials;

the conveying line further comprises a transfer mechanism, the transfer mechanism is arranged at the discharging position of the conveying line, and the transfer mechanism is used for transferring the empty tray (33) after discharging to the return line (200).

2. Conveyor line according to claim 1, characterized in that: the transfer mechanism is a transfer machine which comprises a linear rail (27) spanned between a feeding line (100) and a discharging line, and the conveying unit assembled on the linear rail (27) in a sliding mode.

3. Conveyor line according to claim 1, characterized in that: the aerial parts (6) of the feeding line (100) and the returning line (200) are provided with turning positions, and rotary conveying mechanisms are arranged at the turning positions;

the rotary conveying mechanism comprises an annular track (30) and the conveying unit which is slidably assembled on the annular track (30).

4. Conveyor line according to claim 1, 2 or 3, characterized in that: the aerial part (6) of the loading line (100) comprises a main path and at least two branches;

the transfer machine comprises a linear track (27) spanned between the branches and the conveying unit which is assembled on the linear track (27) in a sliding way.

5. Conveyor line according to claim 4, characterized in that: the main road and the branch road comprise the conveying units which are sequentially arranged at intervals, and the conveying units on the main road and the branch road are arranged at two layers at intervals along the vertical direction;

the transitional machine at the intersection position of the main road and each branch road correspondingly comprises two layers of conveying units which are arranged at intervals along the vertical direction, and the distance between the two layers of conveying units on the transitional machine is equal to the distance between the two layers of conveying units on the main road and the branch road.

6. Conveyor line according to claim 1, 2 or 3, characterized in that: the return line (200) comprises a stacking conveyor (15), stacking/unstackers are arranged at two ends of the return line (200), the stacking/unstackers close to the discharging position are used for stacking the trays (33), and the stacking/unstackers close to the feeding position are used for unstacking the stacked trays (33).

7. Conveyor line according to claim 1, 2 or 3, characterized in that: the feeding line (100) comprises a single-layer conveying area and a double-layer conveying area, the aerial part (6) of the feeding line (100) is positioned in the double-layer conveying area, and the feeding position and the discharging position of the feeding line (100) are both the single-layer conveying area;

the feeding line (100) is provided with a lifting platform assembly at the intersection position of the single-layer conveying area and the double-layer conveying area, the lifting platform assembly comprises a lifting platform (26) capable of lifting, and the conveying unit is arranged on the lifting platform (26) to realize switching between single-layer conveying and double-layer conveying.

8. Conveyor line according to claim 7, characterized in that: the lifting platform (26) is arranged on the ground;

the elevators on the feeding line (100) are double-layer elevators, and each double-layer elevator comprises two layers of conveying units which are arranged at intervals in the vertical direction;

9. Conveyor line according to claim 1, 2 or 3, characterized in that: the feed line (100), return line (200) sharing a ground portion at the feed level;

the conveying line also comprises a transfer machine positioned at the feeding position, the transfer machine comprises a linear rail (27) spanned between the feeding line (100) and the blanking conveying line, and the conveying unit is assembled on the linear rail (27) in a sliding mode.

10. Conveyor line according to claim 1, 2 or 3, characterized in that: the conveying unit is a roller bed (23), the roller bed (23) comprises a frame at the bottom, a roller rotatably mounted on the frame and a supporting wheel arranged on the roller and used for supporting the conveying tray (33).