CN217349669U

CN217349669U - Double-layer circulating conveying structure

Info

Publication number: CN217349669U
Application number: CN202221141252.2U
Authority: CN
Inventors: 陈增光; 李志平
Original assignee: Ningbo Xinzhou Resistance Welder Co ltd
Current assignee: Ningbo Xinzhou Resistance Welder Co ltd
Priority date: 2022-05-12
Filing date: 2022-05-12
Publication date: 2022-09-02
Anticipated expiration: 2032-05-12

Abstract

The utility model discloses a double-deck circulation conveying structure, it is including having upper and lower two-layer bed frame, every layer of bed frame all is equipped with transport mechanism, the bed frame both ends respectively are equipped with the elevating system who is used for passing the material between the transport mechanism of upper and lower floor, the last sliding connection of transport mechanism has a plurality of year material mechanisms that distribute along the direction of transfer, the bed frame has distributed a plurality of actuating mechanism along the transport mechanism direction of transfer in proper order, and every actuating mechanism drives in proper order and slides to next actuating mechanism position to carrying the material mechanism and forming relay formula conveying. The utility model discloses not only realize conveying in batches, improve place space utilization moreover.

Description

Double-layer circulating conveying structure

Technical Field

The utility model relates to a welding machine auxiliary fixtures technical field specifically is a double-deck circulation conveying structure.

Background

In the prior art, the welding machines are used in conjunction with a conveyor frame for ease of operation. When the welding machine is used for welding a welding piece, the reinforcing steel bar needs to be placed on the conveying frame firstly, the reinforcing steel bar is moved from the front end to the rear end of the conveying frame by the driving device and conveyed to the working position, the reinforcing steel bar is welded by the welding machine, the transverse reinforcing steel bar and the longitudinal reinforcing steel bar are welded successively to form a reinforcing steel bar net, the whole welding process is operated by the transverse reinforcing steel bar blanking machine firstly, then the transverse reinforcing steel bar blanking machine is moved to the longitudinal reinforcing steel bar blanking machine for operation, blanking of materials required by product welding is completed and placed, and finally the transverse reinforcing steel bar net is moved to the gantry welding machine for welding.

SUMMERY OF THE UTILITY MODEL

The utility model is directed to the above-mentioned technical problem, a double-deck circulation conveying structure is provided, not only realizes conveying in batches, improves place space utilization moreover.

The utility model adopts the technical proposal that: the utility model provides a double-deck circulation transport structure, it is including having upper and lower two-layer bed frame, every layer of bed frame all is equipped with transport mechanism, the bed frame both ends respectively are equipped with the elevating system who is used for passing the material between the transport mechanism of upper and lower floor, sliding connection has a plurality of year material mechanisms that distribute along the direction of transfer on the transport mechanism, the bed frame has distributed a plurality of actuating mechanism along transport mechanism direction of transfer in proper order, and every actuating mechanism drives in proper order and carries the material mechanism and slide to next actuating mechanism position to carry the material mechanism to form relay formula conveying.

After the structure more than adopting, the utility model has the advantages of it is following: the conveying device comprises two layers of conveying mechanisms, wherein two lifting mechanisms are respectively arranged at two ends of each conveying mechanism, each lifting mechanism is used for conveying materials between the upper conveying mechanism and the lower conveying mechanism, the material loading mechanisms on the conveying mechanisms sequentially pass through the driving mechanisms to move to the position of the next driving mechanism, the driving mechanisms at the positions are used for driving the position of the next driving mechanism to move, the plurality of material loading mechanisms sequentially form relay movement, when the material loading mechanisms move to the end parts of the conveying mechanisms, the lifting mechanisms are used for lifting and moving to convey the material loading mechanisms to the other layer of conveying mechanism, and therefore a circulating reciprocating conveying structure is formed.

Preferably, carry material mechanism and include one and carry the material platform, carry material platform detachably and carry the material mould of carrying that has put the material, carry material platform sliding connection on transport mechanism, it all opens the locating hole to carry the material platform side near four corners department, carry the design of material platform and carrying the material mould, be convenient for place and dismantle and carry the material mould for the conveying is more convenient, and has certain flexibility.

Preferably, transport mechanism is including the first slide rail that is located the bed frame both sides, carry the material platform bottom to be equipped with first slide rail sliding fit's running roller, this kind of sliding mode simple structure, connect stably.

Preferably, the driving mechanism comprises a fixing seat and a rack belt arranged along the conveying direction of the conveying mechanism, the fixing seat is connected to the rack belt in a sliding mode in a gear transmission mode, a first driving piece for driving the gear to rotate is further arranged on the fixing seat, a telescopic positioning pin is arranged on the fixing seat towards the side face of the material carrying platform, the material carrying platform is provided with a positioning hole for the positioning pin to insert, the positioning pin is inserted into the positioning hole, the fixing seat is driven by the first driving piece to drive the material carrying platform to move, the material carrying platform is moved to the positioning pin of the next fixing seat, the positioning pin is inserted into the positioning hole to continuously drive the material carrying platform to move, and the rest is done in a analogizing mode, and finally the relay type conveying and material carrying platform is achieved.

Preferably, the material loading platform is of a square frame structure, positioning holes are formed in two corresponding side faces of each corner of the material loading platform, and all the positioning holes are symmetrically distributed in the center of the square frame.

Preferably, the lifting mechanism comprises a base, a lifting platform and a guide upright post are respectively arranged on two sides of the base, the lifting platform is movably connected to the guide upright post, lifting racks are respectively arranged on two sides of the base, two synchronous shafts at the same height are arranged between the lifting racks on the two sides, gears meshed with the corresponding lifting racks are respectively arranged at two ends of each synchronous shaft, the two synchronous shafts simultaneously penetrate through the lifting platform, the gears at the same ends are respectively meshed with two sides of the corresponding lifting racks, the gears are driven by a third driving piece to roll along the lifting racks, the gears drive the two synchronous shafts to lift, the synchronous shafts drive the lifting platform to lift, namely, two sides of each lifting rack are respectively meshed with a gear at the end of each synchronous shaft, so that the transmission stability of the lifting gears is ensured, and the lifting stability of the lifting platform is further ensured, and the two synchronous shafts simultaneously penetrate through the lifting platform to drive the lifting platform to lift, two synchronizing shafts are arranged side by side and are at the same horizontal height, so that the bearing capacity of the synchronizing shafts is greatly improved, and the bearing stability is ensured.

Preferably, be equipped with the second slide rail with the butt joint of first slide rail on the lift platform, the second slide rail is including being located every lift platform and the bar recess that sets up along the direction of delivery of first slide rail, detachably installs the guide rail in the bar recess, the guide rail can supply to carry the material platform to slide, carry the material platform be located between two lift platforms and with lift platform sliding connection, finally guarantee to carry the stability of material platform at direction of height transmission.

Preferably, the base both sides still are equipped with the support post respectively, the lifting rack is installed perpendicularly in the support post side, the support post outside is equipped with the apron that is used for protecting the lifting rack, plays the guard action to the lifting rack.

Preferably, the base top is equipped with a fixed station, the one end of direction stand and support post is connected in the base, and the other end is connected in the fixed station, base and fixed station are located direction stand and support post both ends respectively for direction stand and support post can be more firm, prevent its deformation.

Preferably, the number of the third driving parts is two, one third driving part corresponds to two gears at the same end of the control synchronizing shaft, and the two third driving parts are fixed on the fixed table, so that the whole lifting mechanism extends towards the height direction, the occupied area is correspondingly reduced, the space utilization rate is enhanced, the width of the conveying mechanism is adapted, and the integrity is enhanced.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic view of the end structure of the conveying mechanism of the present invention.

Fig. 3 is an enlarged view of a in fig. 2.

Fig. 4 is an enlarged view at B in fig. 2.

Fig. 5 is a schematic view of the overall structure of the middle lifting mechanism of the present invention.

Fig. 6 is an enlarged view at C in fig. 5.

Fig. 7 is a schematic structural diagram of the lifting mechanism of the present invention (omitting the loading platform).

Wherein, 1, a base frame; 2. a transport mechanism; 2-1, a first slide rail; 3. a lifting mechanism; 3-1, a base; 3-2, lifting the platform; 3-3, guiding the upright post; 3-4, lifting racks; 3-5, a third driving member; 3-6, a synchronizing shaft; 3-7, a driving wheel; 3-8, a guide rail; 3-9, a fixed table; 3-10, strip-shaped grooves; 3-11, supporting feet; 3-12, supporting the upright post; 3-13, cover plate; 3-14, a support plate; 3-15, a second slide rail; 4. a material loading mechanism; 4-1, a loading platform; 4-2, loading a mold; 4-3, positioning holes; 5. a drive mechanism; 5-1, a rack belt; 5-2, fixing seats; 5-3, a first driving piece; 5-4, positioning pins; 5-5 and a second driving piece.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the following detailed description.

The embodiment provides a double-layer circulating conveying structure, as shown in fig. 1 and 2, which comprises a base frame 1, wherein the base frame 1 is divided into an upper layer and a lower layer, the base frame 1 is a steel frame structure, each layer of base frame 1 is provided with a conveying mechanism 2, the upper conveying mechanism 2 and the lower conveying mechanism 2 are parallel to each other, the conveying mechanism 2 comprises first slide rails 2-1 positioned at two sides of the base frame 1, two ends of the base frame 1 are respectively provided with a lifting mechanism 3, the lifting mechanisms 3 are used for delivering materials between the upper conveying mechanism 2 and the lower conveying mechanism 2, the conveying mechanism 2 is provided with a plurality of material loading mechanisms 4 used for placing materials along a conveying direction, the material loading mechanisms 4 are connected to the conveying mechanisms 2 in a sliding manner, the base frame 1 is laterally provided with a plurality of driving mechanisms 5, the plurality of driving mechanisms 5 sequentially drive the material loading mechanisms 4 at corresponding positions to slide, so that the material loading mechanisms 4 slide to the positions of the next driving mechanisms 5, and then the driving mechanisms 5 at the positions to drive the material loading mechanisms 4 to slide to the next positions, therefore, the material loading mechanisms 4 on the conveying mechanism 2 sequentially form relay type conveying, after the material loading mechanisms 4 slide to the end parts of the conveying mechanism 2, the material loading mechanisms 4 are lifted and transported by the lifting mechanisms 3 to the upper layer and the lower layer, after lifting, the material loading mechanisms 4 slide to the conveying mechanism 2 again through the driving mechanism 5, and at this time, the upper layer and the lower layer conveying mechanisms 2 and the lifting mechanisms 3 at the two ends of the conveying mechanism 2 jointly form a circulating type conveying structure.

The structure is as follows, the material carrying mechanism 4 comprises a material carrying platform 4-1, in this embodiment, the material carrying platform 4-1 is a square frame structure, the bottom of the material carrying platform is provided with a roller wheel which is in sliding fit with the first sliding rail 2-1, the number of the material carrying platforms 4-1 is multiple, the material carrying platforms are sequentially in sliding fit with the first sliding rail 2-1, as shown in fig. 4, the material carrying platform 4-1 can carry a material carrying mold 4-2, the inner peripheral wall of the material carrying platform 4-1 of the square frame structure is provided with a step type clamping groove, the material carrying mold 4-2 is correspondingly in a square plate structure, the material carrying mold 4-2 is directly placed on the material carrying platform 4-1 and then forms step type clamping with the material carrying platform 4-1, so that the material carrying mold 4-2 does not shake in the moving process of the material carrying platform 4-1, the material loading mould 4-2 is directly arranged and placed with the steel bar materials to be conveyed, the material loading platform 4-1 is used as a general template capable of loading materials, and rectangular material loading moulds 4-2 with various areas can be placed to adapt to the processing working conditions of different types of materials.

As shown in fig. 4, two side surfaces of each corner of the material loading platform 4-1 are provided with positioning holes 4-3, and all the positioning holes 4-3 are symmetrically distributed in the center of the square frame, that is, the positioning holes 4-3 are located at two side surfaces of the material loading platform 4-1, and the positioning holes 4-3 are used for being matched with the driving mechanism 5, so that the driving mechanism 5 is conveniently distributed at two sides of the conveying mechanism 2 according to needs, and any one side surface can be matched with the material loading platform 4-1, that is, the material loading platform 4-1 can be randomly placed when being installed on the conveying mechanism 2, the direction of the material loading platform 4-1 does not need to be specially confirmed, and manual batch operation is facilitated.

The driving mechanism 5 comprises a rack 5-1 arranged along the conveying direction of a fixed seat 5-2 and a conveying mechanism 2, a gear is meshed on the rack 5-1, the fixed seat 5-2 is connected with the gear, the gear is connected with a first driving part 5-3, the first driving part 5-3 drives the gear to rotate, the gear can reciprocate along the rack 5-1, the fixed seat 5-2 moves along with the gear, the number of the fixed seats 5-2 corresponds to that of the rack 5-1 one by one, when the number of the rack 5-1 is more, the rack 5-1 is distributed along the conveying direction in sequence, each rack 5-1 corresponds to one first driving part 5-3, the fixed seat 5-2 is driven to reciprocate on the corresponding rack 5-1, the first driving part 5-3 usually refers to an air cylinder or a hydraulic cylinder, as shown in fig. 3, the fixing base 5-2 moves along the conveying direction, and a side of the fixing base 5-2 facing the material loading platform 4-1 is provided with a retractable positioning pin 5-4, so that the positioning pin 5-4 is inserted into the positioning hole 4-3 or pulled out of the positioning hole 4-3, after the positioning pin 5-4 is inserted into the positioning hole 4-3, the fixing base 5-2 is connected with the material loading platform 4-1, the fixing base 5-2 drives the material loading platform 4-1 to move, and the moving stroke is the length of the current rack 5-1.

In addition, the number of the positioning holes 4-3 at each corner of the material loading platform 4-1 can be multiple, and the positioning holes 4-3 are horizontally distributed along the conveying direction, so that fine adjustment of the positions between the positioning pins 5-4 and the positioning holes 4-3 can be realized, and different working condition requirements can be met.

It should be noted that the two driving mechanisms 5 corresponding to the adjacent material loading mechanisms 4 are respectively located at two sides of the conveying mechanism 2, that is, the transmission mechanisms at each side of the conveying mechanism 2 are distributed at intervals, so as to prevent the fixing seats 5-2 of the two adjacent front and rear conveying mechanisms from interfering with each other when the same material loading platform 4-1 is relayed, and thus the butt joint is affected.

The fixed seat 5-2 is provided with a second driving part 5-5, the second driving part 5-5 is usually an air cylinder or a hydraulic cylinder, and the second driving part 5-5 drives the positioning pin 5-4 to do telescopic action, so that automatic telescopic action of the positioning pin 5-4 is realized.

It should be noted that the upper and lower layers of the conveying mechanism 2 of the base frame 1 are different, the upper layer is the sliding connection between the first slide rail 2-1 and the roller of the material carrying platform 4-1, and the material carrying platform 4-1 moves through the gear transmission between the fixed seat 5-2 and the rack 5-1; the first sliding rail 2-1 and the material carrying platform 4-1 at the lower layer are transmitted through a synchronous belt, namely the material carrying platform 4-1 at the lower layer is in synchronous transmission and does not correspond to the driving mechanism 5 one by one.

As shown in FIG. 5, the lifting mechanism 3 includes a base 3-1, two sides of the base 3-1 are respectively provided with a lifting platform 3-2 and guide columns 3-3, in this embodiment, four guide columns 3-3 are respectively vertically fixed around the base 3-1, the lifting platform 3-2 is in an L-shaped plate structure, a reinforcing rib is arranged between the vertical surface and the horizontal surface, the bottom of the guide column 3-3 is sleeved with a bearing seat, the bearing seat is respectively connected with the vertical surface and the horizontal surface to strengthen the stability, the lifting platform 3-2 can perform lifting motion along the guide columns 3-3 through a fixing seat 5-2, the vertical surface of the lifting platform 3-2 is further provided with a plurality of hollow spaces, and the hollow spaces and the reinforcing ribs are distributed at intervals in a staggered manner, so that the lifting platform 3-2 can reduce the weight, but also can ensure the bearing strength.

The two sides of the base 3-1 are also respectively provided with a lifting rack 3-4, namely the lifting rack 3-4 is arranged at the same side of the bearing platform, the lifting rack 3-4 is vertically fixed as the guide upright post 3-3, the lifting rack 3-4 is fixed on the base 3-1 through a support upright post 3-12, the support upright post 3-12 is vertically fixed at the two sides of the base 3-1, in the embodiment, the lifting rack 3-4 is vertically arranged at the side surface of the support upright post 3-12, the support upright post 3-12 plays a role in fixing and supporting the lifting rack 3-4, the outer side of the support upright post 3-12 is provided with a cover plate 3-13, and the cover plate 3-13 plays a role in protecting the lifting rack 3-4.

The bottom end of the lifting rack 3-4 is fixed at the bottom of the supporting upright post 3-12, and the top end of the lifting rack 3-4 is fixed at the top of the supporting upright post 3-12.

The synchronous shafts 3-6 which are parallel to each other and are positioned at the same height are arranged between the two lifting racks 3-4, the synchronous shafts 3-6 penetrate through the two lifting platforms 3-2, namely the two lifting platforms 3-2 are provided with opposite through holes which are arranged on the vertical surface of the lifting platform 3-2, the two ends of the synchronous shafts 3-6 respectively penetrate through the through holes, so that the two ends of the synchronous shafts 3-6 simultaneously support the lifting platforms 3-2, the ends of the two synchronous shafts 3-6 are fixedly provided with driving wheels 3-7 meshed with the lifting racks 3-4, after the synchronous shafts 3-6 penetrate through the lifting platforms 3-2, the driving wheels 3-7 at the ends of the synchronous shafts 3-6 are meshed with the lifting racks 3-4, the two synchronous shafts 3-6 are respectively positioned at the two sides of the lifting racks 3-4, namely, two driving wheels 3-7 are respectively arranged on two sides of each lifting rack 3-4 to be meshed with the lifting rack, namely, each lifting rack 3-4 corresponds to one group of driving wheels 3-7, one group of driving wheels 3-7 comprises two driving wheels 3-7, one group of driving wheels 3-7 is correspondingly provided with a third driving part 3-5, and the third driving part 3-5 is generally referred to as an air cylinder to drive the driving wheels 3-7 to roll along the lifting racks 3-4.

When the driving wheel 3-7 rolls under the driving of the third driving piece 3-5, the driving wheel 3-7 drives the synchronous shaft 3-6 to rotate, and the synchronous shaft 3-6 makes lifting motion along the lifting rack 3-4, so that the synchronous shaft 3-6 drives the lifting platform 3-2 to make lifting motion, and the two synchronous shafts 3-6 are parallel and at the same height, so that the two bearing platforms can make lifting motion simultaneously.

The material loading platform 4-1 is positioned between the two lifting platforms 3-2, two sides of the material loading platform 4-1 are respectively arranged on the horizontal plane of the lifting platforms 3-2, and the material loading platform 4-1 performs lifting action along with the lifting platforms 3-2.

As shown in figure 6, a horizontal plane of each lifting platform 3-2 is provided with a strip-shaped groove 3-10, a strip-shaped guide rail 3-8 is assembled in the strip-shaped groove 3-10 to form a second sliding rail 3-15, a roller at the bottom of the material loading platform 4-1 is provided with an annular groove, the guide rail 3-8 can be embedded into the annular groove, so that the roller can slide along the rail body of the guide rail 3-8, and the material loading platform 4-1 can slide along the second sliding rail 3-15.

It should be noted that, as the lifting platform 3-2 is lifted, the second slide rail 3-15 and the first slide rail 2-1 can be at the same height, at this time, the second slide rail 3-15 and the first slide rail 2-1 are in a butt joint state, and the material carrying platform 4-1 on the first slide rail 2-1 is continuously driven by the driving mechanism 5 located at the end of the conveying mechanism 2 closest to the lifting platform 3-2, that is, the material carrying platform 4-1 is pushed to move from the first slide rail 2-1 to the second slide rail 3-15, so that the butt joint of the material carrying platform 4-1 between the conveying mechanism 2 and the lifting mechanism 3 is completed.

As shown in figure 7, a fixing table 3-9 is arranged above a base 3-1, the shape and area of the fixing table 3-9 are the same as those of the base 3-1, one end of each of a guide upright 3-3 and a support upright 3-12 is connected to the base 3-1, and the other end of each of the guide upright 3-3 and the support upright is connected to the fixing table 3-9, so that the fixing table 3-9 can stabilize the whole mechanism and shield the upper part of a material carrying platform 4-1 to protect the material on the material carrying platform 4-1.

The third driving member 3-5 for driving the driving wheel 3-7 can be fixed on the fixed table 3-9, so that the whole mechanism extends in the height direction, thereby reducing the occupied space and enhancing the space utilization rate.

The four corners of the base 3-1 extend outwards to form supporting plates 3-14, a threaded hole is formed in the center of each supporting plate 3-14, a supporting foot 3-11 is correspondingly arranged below each supporting plate 3-14, each supporting foot 3-11 is provided with a threaded end, the threaded ends are matched with the threaded holes, so that the supporting feet 3-11 are installed on the supporting plates 3-14, the heights of the supporting feet 3-11 relative to the supporting plates 3-14 are adjusted by rotating the threaded ends of the supporting feet 3-11 due to threaded connection, the height of the base 3-1 from the ground is adjusted, the supporting plates 3-14 are arranged outwards, manual operation is facilitated to adjust the supporting feet 3-11, and reinforcing ribs are arranged between the supporting plates 3-14 and the base 3-1 to reinforce the strength of the supporting plates 3-14.

The working principle of the whole structure is that firstly, a material loading mould 4-2 loaded with reinforcing steel bar materials is manually placed on a material loading platform 4-1 on a lifting mechanism 3, the material loading platform 4-1 is lifted to the end part of a corresponding conveying mechanism 2 through the lifting mechanism 3, at the moment, a positioning pin 5-4 on a fixed seat 5-2 of the conveying mechanism 2 close to the end part is inserted into a positioning hole 4-3 of the material loading platform 4-1 on the lifting mechanism 3 close to the end part of the conveying mechanism 2, a driving mechanism 5 corresponding to the fixed seat 5-2 can be defined as a first driving mechanism 5, then the fixed seat 5-2 moves along a corresponding toothed strip 5-1 under the driving of a first driving piece 5-3, the material loading platform 4-1 is pulled away from the lifting mechanism 3 by the driving mechanism 5 and enters the conveying mechanism 2, then, after the material loading platform 4-1 moves a certain stroke on the conveying mechanism 2 through the first driving mechanism 5, the adjacent driving mechanism 5 is defined as a second driving mechanism 5, the positioning pin 5-4 of the second driving mechanism 5 is inserted into the positioning hole 4-3 at the other end of the material loading platform 4-1, the positioning pin 5-4 of the first driving mechanism 5 is separated from the material loading platform 4-1 at this time, the material loading platform 4-1 moves forwards under the driving of the second driving mechanism 5, and so on, the material loading platform 4-1 is driven by each driving mechanism 5 to move forwards in sequence, when the material loading platform 4-1 moves to the other end of the conveying mechanism 2, the corresponding driving mechanism 5 pushes the material loading platform 4-1 onto the lifting mechanism 3 at the end part, and the material loading platform is conveyed to the end part of the conveying mechanism 2 at another layer through the lifting mechanism 3, starting another conveying stroke, the mode and the principle of driving the material loading platform 4-1 by the driving mechanisms 5 on the two conveying mechanisms 2 are the same, and needless to say, the material loading platform 4-1 is finally driven to the lifting mechanism 3, and the material loading platform 4-1 is manually taken.

It should be noted that each driving mechanism 5 is provided with a separate controller for automatically controlling the corresponding driving member, in addition, the lifting mechanism 3 is also provided with a separate controller for controlling the corresponding driving member, and finally, the controller of the whole structure is integrated in the control center to form an automatic transmission structure.

While the above is directed to the preferred embodiment of the present invention, it is not intended that it be limited, except as by the appended claims. The utility model discloses not only confine the above embodiment to, its specific structure allows to change, and all the various changes that do in the independent protection scope of requirement of the utility model are in the protection scope of the utility model.

Claims

1. Double-deck circulation conveying structure, its characterized in that, it is including having upper and lower two-layer bed frame (1), every layer of bed frame (1) all is equipped with transport mechanism (2), bed frame (1) both ends respectively are equipped with elevating system (3) that are used for passing the material between upper and lower floor transport mechanism (2), sliding connection has a plurality of year material mechanism (4) that distribute along direction of transfer on transport mechanism (2), bed frame (1) has distributed a plurality of actuating mechanism (5) along transport mechanism (2) direction of transfer in proper order, and every actuating mechanism (5) drive in proper order and correspond material mechanism (4) of carrying of position and slide to next actuating mechanism (5) position to form relay formula conveying to year material mechanism (4).

2. The double-deck endless conveying structure according to claim 1, wherein: the material loading mechanism (4) comprises a material loading platform (4-1), the material loading platform (4-1) detachably bears a material loading mold (4-2) provided with materials, and the material loading platform (4-1) is connected to the conveying mechanism (2) in a sliding mode.

3. The double-deck endless conveying structure according to claim 2, characterized in that: the conveying mechanism (2) comprises first sliding rails (2-1) located on two sides of the base frame (1), and rollers in sliding fit with the first sliding rails (2-1) are arranged at the bottom of the material loading platform (4-1).

4. The double-deck endless conveying structure according to claim 2, characterized in that: the material loading platform is characterized in that the driving mechanism (5) comprises a fixed seat (5-2) and a rack (5-1) arranged along the conveying direction of the conveying mechanism (2), the fixed seat (5-2) is connected to the rack (5-1) in a sliding mode in a gear transmission mode, a first driving piece (5-3) for driving the gear to rotate is further arranged on the fixed seat (5-2), a telescopic positioning pin (5-4) is arranged on the side face, facing the material loading platform (4-1), of the fixed seat (5-2), and a positioning hole (4-3) for inserting the positioning pin (5-4) is formed in the material loading platform (4-1).

5. The double-deck endless conveying structure of claim 4, wherein: the material loading platform (4-1) is of a square frame structure, positioning holes (4-3) are formed in two corresponding side faces of each corner of the material loading platform (4-1), and all the positioning holes (4-3) are distributed in a central symmetry mode in the square frame.

6. The double-deck endless conveying structure according to claim 1 or 4, characterized in that: the lifting mechanism (3) comprises a base (3-1), a lifting platform (3-2) and a guide upright post (3-3) are respectively arranged on two sides of the base (3-1), the lifting platform (3-2) is movably connected to the guide upright post (3-3), lifting racks (3-4) are respectively arranged on two sides of the base (3-1), two synchronizing shafts (3-6) at the same height are arranged between the lifting racks (3-4) on the two sides, a driving wheel (3-7) meshed with the corresponding lifting rack (3-4) is respectively arranged at two ends of each synchronizing shaft (3-6), the two synchronizing shafts (3-6) simultaneously penetrate through the lifting platform (3-2), and the driving wheels (3-7) at the same ends are respectively meshed with two sides of the corresponding lifting racks (3-4), the driving wheel (3-7) is driven by the third driving piece (3-5) to roll along the lifting rack (3-4), the driving wheel (3-7) drives the two synchronous shafts (3-6) to lift, and the synchronous shafts (3-6) drive the lifting platform (3-2) to lift.

7. The double-deck endless conveying structure according to claim 6, wherein: the lifting platform (3-2) is provided with a second sliding rail (3-15) which is in butt joint with the first sliding rail (2-1), the second sliding rail (3-15) comprises strip-shaped grooves (3-10) which are located on each lifting platform (3-2) and are arranged along the conveying direction of the first sliding rail (2-1), guide rails (9) are detachably mounted in the strip-shaped grooves (3-10), and the guide rails (9) can be used for the material loading platform (4-1) to slide.

8. The double-deck endless conveying structure according to claim 7, wherein: the lifting rack is characterized in that supporting columns (3-12) are respectively arranged on two sides of the base (3-1), the lifting racks (3-4) are vertically arranged on the side faces of the supporting columns (3-12), and cover plates (3-13) used for protecting the lifting racks (3-4) are arranged on the outer sides of the supporting columns (3-12).

9. The double-deck endless conveying structure according to claim 8, wherein: a fixed table (3-9) is arranged above the base (3-1), one end of each guide upright post (3-3) and one end of each support upright post (3-12) are connected to the base (3-1), and the other end of each guide upright post is connected to the fixed table (3-9).

10. The double-deck endless conveying structure according to claim 9, wherein: the number of the third driving parts (3-5) is two, one third driving part (3-5) corresponds to the two driving wheels (3-7) at the same end of the control synchronizing shaft (3-6), and the two third driving parts (3-5) are fixed on the fixed table (3-9).