阅读说明：本技术 一种纽扣电池包装机 (Button cell packagine machine ) 是由 叶克勤 叶纪练 林宣楷 于 2021-02-03 设计创作，主要内容包括：本发明公开了一种纽扣电池包装机,包括第一传动机构、第一泡壳成型机构、第二泡壳成型机构、第二传动机构、泡壳转送机构以及纸塑热封机构,所述第一传动机构包括第一转盘及第一传动模,第一转盘设有第一泡壳下料工位、加料工位、第二泡壳下料工位、封合工位及出料工位；第二传动机构包括第二转盘及第二传动模,所述第二转盘设有泡壳加料工位、放底卡工位、纸塑封合工位及成品出料工位；泡壳转送机构设置在出料工位与泡壳加料工位之间,且与出料工位的第一传动模和泡壳加料工位的第二传动模衔接。物料置于第一泡壳内,第二泡壳置于第一泡壳上方,二者封合成壳体,并由泡壳转送机构翻转后送至第二转盘上,最后放入底卡,壳体与底卡封合。(The invention discloses a button cell packaging machine which comprises a first transmission mechanism, a first bulb shell forming mechanism, a second transmission mechanism, a bulb shell transfer mechanism and a paper-plastic heat sealing mechanism, wherein the first transmission mechanism comprises a first rotary disc and a first transmission die, and the first rotary disc is provided with a first bulb shell blanking station, a charging station, a second bulb shell blanking station, a sealing station and a discharging station; the second transmission mechanism comprises a second rotary table and a second transmission mold, and the second rotary table is provided with a bulb shell feeding station, a bottom placing and clamping station, a paper plastic sealing station and a finished product discharging station; the bulb shell transfer mechanism is arranged between the discharging station and the bulb shell charging station and is connected with the first transmission die of the discharging station and the second transmission die of the bulb shell charging station. The materials are arranged in the first bulb shell, the second bulb shell is arranged above the first bulb shell, the first bulb shell and the second bulb shell are sealed to form a shell, the shell is turned by the bulb shell transfer mechanism and then sent to the second rotating disc, finally the bottom card is placed, and the shell and the bottom card are sealed.)

1. A button cell packaging machine is characterized by comprising

The first transmission mechanism comprises a first rotating disc and first transmission dies, the first transmission dies are uniformly arranged along the circumferential direction of the first rotating disc, and the first rotating disc is provided with a first cell shell blanking station, a feeding station, a second cell shell blanking station, a sealing station and a discharging station;

the first bulb shell forming mechanism comprises a first bulb shell blanking device and is arranged at a first bulb shell blanking station;

the second bulb shell forming mechanism comprises a second bulb shell blanking device and is arranged at a second bulb shell blanking station;

the plastic sealing mechanism is arranged at the sealing station;

the second transmission mechanism comprises a second turntable and second transmission dies, the second transmission dies are uniformly arranged along the circumferential direction of the second turntable, and the second turntable is provided with a bulb shell feeding station, a bottom placing and clamping station, a paper plastic sealing station and a finished product discharging station;

the bulb shell transfer mechanism comprises an overturning and feeding device, wherein the overturning and feeding device is arranged between the discharging station and the bulb shell feeding station and is connected with a first transmission die of the discharging station and a second transmission die of the bulb shell feeding station;

and the paper plastic heat sealing mechanism is arranged at the paper plastic sealing station.

2. The button cell packaging machine as claimed in claim 1, wherein the flip-over feeding device comprises

A first material absorbing part;

the first overturning part drives the first blanking part to overturn;

a first lifting component for driving the first material sucking component to lift;

a second material absorbing part;

a second overturning part for driving the second material absorbing part to overturn,

and the lifting component II drives the material sucking component II to lift, and the material sucking component II and the material sucking component I are matched to suck materials.

3. The button cell packaging machine according to claim 2, wherein the blister transfer mechanism further comprises a blister moving device, the blister moving device including

A machine base;

the moving plate is provided with a material placing groove;

a driving part for driving the moving plate to horizontally move on the base;

a third material absorbing part;

a moving part for driving the material sucking part III to move horizontally;

and a third lifting component for driving the material sucking component to lift.

4. The button cell packaging machine according to claim 1, wherein the first rotating disc is further provided with a visual detection station, the visual detection station is arranged between the feeding station and the second blister discharging station, the visual detection station is provided with an image sensor, and the image sensor is connected with the electric controller.

5. The button cell packaging machine according to claim 1, wherein the button cell packaging machine further comprises a feeding mechanism, the feeding mechanism comprising

The tray unstacking device comprises

The tray conveying component comprises a conveying piece which is longitudinally arranged,

the unstacking component comprises

A supporting plate which can be lifted up and down,

the transversely moving inserting plates are arranged above the conveying piece and are arranged at the left side and the right side of the supporting plate,

the feeding table is arranged in front of the supporting plate;

and the manipulator is used for conveying the material on the feeding table to the first transmission die and is arranged at the feeding station.

6. The button cell packaging machine according to claim 5, wherein the conveying member includes a first conveying belt, a second conveying belt, a third conveying belt and a material supporting plate, the first conveying belt, the second conveying belt and the third conveying belt are sequentially arranged along the conveying direction and are connected with each other, the third conveying belt is arranged on the left side and the right side of the material supporting plate and the material feeding table, a waiting station is arranged behind the material supporting plate, and the material supporting plate and the second conveying belt are arranged at the waiting station.

7. The button cell packaging machine according to claim 6, wherein the first conveyor belt has evenly distributed stoppers, and a tray receiving area is formed between adjacent stoppers.

8. The button cell packaging machine according to claim 5, wherein the feeding mechanism further comprises a tray recovery device including

The tray stacking component comprises

A stacking platform which can be lifted up and down,

a stacking frame arranged at two sides of the stacking platform,

a material supporting block which is arranged on the stacking rack through a rotating shaft, the upper surface of the material supporting block is a material supporting surface,

a push plate moving back and forth, the push plate is arranged above the stacking platform,

one end of the torsion spring is connected with the rotating shaft, and the other end of the torsion spring is connected with the stacking frame;

and a recovery slideway is longitudinally arranged and is arranged in front of the conveying piece.

9. The button cell packaging machine according to claim 5, wherein the unstacking assembly further comprises a front baffle and a rear baffle which are vertically movable, and the front baffle and the rear baffle are respectively arranged on the front side and the rear side of the feeding table.

Technical Field

The invention relates to a button battery packaging machine.

Background

Traditional button cell makes and adopts cell-shell and cardboard involution, tear the cardboard when using and just can take out the battery, children also can take out the battery easily, also appear the infant occasionally and swallow button cell's accident, take place for avoiding such problem, present button cell adopts outer cell-shell and interior cell-shell, plastics and plastics involution are very firm, children can not open by bare-handed, when selling, for the ease of hanging, the cell-shell again with the cardboard involution, that is to say button cell's packing has the cardboard, outer cell-shell and interior cell-shell three layer construction, current equipment for packing still can not be used for this kind of novel packing.

Disclosure of Invention

In view of the technical problems in the background art, the technical problem to be solved by the invention is to provide a novel button battery packaging machine, which is used for packaging an outer blister, an inner blister and a paperboard three-layer structure.

In order to solve the technical problems, the invention adopts the following technical scheme: the button cell packaging machine is characterized by comprising

The first transmission mechanism comprises a first rotating disc and first transmission dies, the first transmission dies are uniformly arranged along the circumferential direction of the first rotating disc, and the first rotating disc is provided with a first cell shell blanking station, a feeding station, a second cell shell blanking station, a sealing station and a discharging station;

the first bulb shell forming mechanism comprises a first bulb shell blanking device and is arranged at a first bulb shell blanking station;

the second bulb shell forming mechanism comprises a second bulb shell blanking device and is arranged at a second bulb shell blanking station;

the plastic sealing mechanism is arranged at the sealing station;

the second transmission mechanism comprises a second turntable and second transmission dies, the second transmission dies are uniformly arranged along the circumferential direction of the second turntable, and the second turntable is provided with a bulb shell feeding station, a bottom placing and clamping station, a paper plastic sealing station and a finished product discharging station;

the bulb shell transfer mechanism comprises an overturning and feeding device, wherein the overturning and feeding device is arranged between the discharging station and the bulb shell feeding station and is connected with a first transmission die of the discharging station and a second transmission die of the bulb shell feeding station;

and the paper plastic heat sealing mechanism is arranged at the paper plastic sealing station.

In the invention, a first material is processed into a first bulb shell by a first bulb shell forming mechanism, the first bulb shell is conveyed to a first transmission die by a first bulb shell blanking device, a first rotating disc rotates, the first bulb shell is conveyed to a feeding die for feeding, the first bulb shell is conveyed to a second bulb shell blanking station after feeding, a second material is processed into a second bulb shell by a second bulb shell forming mechanism, the second bulb shell blanking device conveys the second bulb shell to the first transmission die and is arranged above the first bulb shell, then the two are sent to a sealing station, a plastic sealing mechanism seals the first bubble shell and the second bubble shell to form a shell, the shell conveying mechanism conveys the formed shell to a second conveying die, a second turntable rotates to convey the shell to a bottom card placing station, the bottom card is arranged above the shell, then the paper card is sent to a paper plastic sealing station, a paper plastic heat sealing mechanism seals the paper card and the shell into a whole, the packaging is completed, and finally the finished product is taken out from a finished product discharging station.

Preferably, the overturning charging device comprises

A first material absorbing part;

the first overturning part drives the first blanking part to overturn;

a first lifting component for driving the first material sucking component to lift;

a second material absorbing part;

a second overturning part for driving the second material absorbing part to overturn,

and the lifting component II drives the material sucking component II to lift, and the material sucking component II and the material sucking component I are matched to suck materials.

Preferably, the blister transfer mechanism further comprises a blister moving device, and the blister moving device comprises

A machine base;

the moving plate is provided with a material placing groove;

a driving part for driving the moving plate to horizontally move on the base;

a third material absorbing part;

a moving part for driving the material sucking part III to move horizontally;

and a third lifting component for driving the material sucking component to lift.

Preferably, the first rotating disc is further provided with a visual detection station, the visual detection station is arranged between the feeding station and the second bulb shell blanking station, the visual detection station is provided with an image sensor, and the image sensor is connected with the electric controller. Image sensor shoots the first transmission mould after feeding in raw material to will shoot the picture and send for the electric controller, through comparing, if there is the material leakage condition, the electric controller sends the instruction, shuts down or sends out the police dispatch newspaper, reminds the staff, so avoid not having the material packing, all have the material in guaranteeing every packing carton.

Preferably, the button cell packaging machine further comprises a feeding mechanism, and the feeding mechanism comprises

The tray unstacking device comprises

The tray conveying component comprises a conveying piece which is longitudinally arranged,

the unstacking component comprises

A supporting plate which can be lifted up and down,

the transversely moving inserting plates are arranged above the conveying piece and are arranged at the left side and the right side of the supporting plate,

the feeding table is arranged in front of the supporting plate;

and the manipulator is used for conveying the material on the feeding table to the first transmission die and is arranged at the feeding station.

The tray of stack is sent to the charging table one by one to reinforced mechanism, and on the material that will be in the tray was sent to first transmission mould through the manipulator, automatic material conveying had been realized.

Preferably, the conveying piece comprises a first conveying belt, a second conveying belt, a third conveying belt and a material supporting plate, the first conveying belt, the second conveying belt and the third conveying belt are sequentially arranged along the conveying direction and are mutually connected, the third conveying belt is arranged on the left side and the right side of the supporting plate and the feeding table, a waiting station is arranged behind the supporting plate, and the material supporting plate and the second conveying belt are arranged on the waiting station.

Preferably, the first conveyor belt is uniformly distributed with stop blocks, and a tray accommodating area is formed between every two adjacent stop blocks.

Preferably, the feeding mechanism further comprises a tray recovery device which comprises

The tray stacking component comprises

A stacking platform which can be lifted up and down,

a stacking frame arranged at two sides of the stacking platform,

a material supporting block which is arranged on the stacking rack through a rotating shaft, the upper surface of the material supporting block is a material supporting surface,

a push plate moving back and forth, the push plate is arranged above the stacking platform,

one end of the torsion spring is connected with the rotating shaft, and the other end of the torsion spring is connected with the stacking frame;

and a recovery slideway is longitudinally arranged and is arranged in front of the conveying piece.

The tray is piled up again after using to being delivered to and being collected by the unity on retrieving the slide, the production efficiency that improves greatly reduces the problem of lou material moreover, the tray stack part carries out the stack with the tray after using, makes the tray that gets into and retrieves the slide pile up and be a pile, the collection of being more convenient for like this.

Preferably, the unstacking component further comprises a front baffle and a rear baffle which can lift up and down, and the front baffle and the rear baffle are respectively arranged on the front side and the rear side of the feeding table.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic view of the blister transfer mechanism of the present invention.

Fig. 3 is a schematic view of the feeding mechanism of the present invention.

Fig. 4 is a cross-sectional view of a button cell package.

Detailed Description

The following describes details and operational principles of embodiments and examples of the present invention with reference to the drawings. The button cell packaging machine comprises a first transmission mechanism, a first bulb shell forming mechanism 3, a second bulb shell forming mechanism 4, a plastic packaging mechanism 6, a second transmission mechanism, a bulb shell transfer mechanism 7 and a paper plastic heat sealing mechanism 9; the first blister forming mechanism 3, the second blister forming mechanism 4, the plastic sealing mechanism 6 and the paper plastic sealing mechanism 9 are all the prior art, the first blister forming mechanism and the second blister forming mechanism mainly comprise a material traction part, a heating part, a mold forming part and a cutting part, the heating part heats the material, the material is heated and softened, the material is conveyed to the mold forming station by the traction part, the heated material is molded or formed by plastic suction through the mold forming part and then conveyed to the cutting station, the cutting part is used for die cutting or longitudinally cutting or transversely cutting the heated material into unit blisters, and then the first blister and the second blister are formed, the plastic sealing mechanism 6 and the paper plastic sealing mechanism 9 mainly comprise a heat sealing upper mold and a heat sealing lower mold, the heat sealing upper mold and the heat sealing lower mold are pressed to seal the blisters or seal the blisters and the paper cards, see figure 4, the first blister is an inner blister 44, 48, an upper die of a forming die for processing the inner cell shell is a male die with an annular slot, a lower die of the forming die is a female die with an annular insert plate, the insert plate is matched with the slot, and plastic forms a first cell shell when being pressed by the upper die and the lower die, so that the first cell shell is provided with a columnar shell 48 with a trough and forms a double-layer side surface 44, and the lower end surface of the outer layer side surface extends outwards to form a sealing surface 45; the second cell-shell is outer cell-shell 42, 43, including having the column lid 42 that holds the chamber, the side 13 of lid has outside extending's involution face 46, during the packing, the silo of interior casing is arranged in to the battery, outside the cell-shell including outer cell-shell cover establishes, on the involution face 45 of interior cell-shell is arranged in to the involution face 46 of outer cell-shell, form sealed housing behind the two involution, card paper 47 again with the involution face involution, the packing is accomplished promptly to the two involution, the plastic envelope closes required temperature higher relatively.

The first transmission mechanism comprises a first rotating disc 1 and first transmission dies 51, the first transmission dies are uniformly arranged along the circumferential direction of the first rotating disc, and the first rotating disc is provided with a first cell shell blanking station, a charging station, a second cell shell blanking station, a sealing station and a discharging station; the first bulb shell forming mechanism comprises a first bulb shell blanking device 11 arranged at a first bulb shell blanking station; second cell-shell forming mechanism sets up at second cell-shell unloading station including second cell-shell unloader 12, first cell-shell unloader and second cell-shell unloader send fashioned cell-shell to first transmission mould 51 on, first cell-shell unloader and second cell-shell unloader can adopt the material piece realization of inhaling of upper and lower, back-and-forth movement, also can adopt to change the preface device and realize, and the two is prior art, no longer follows after and tells. The plastic sealing mechanism 6 is arranged at a sealing station; the second transmission mechanism comprises a second turntable 2 and a second transmission die 52, the second transmission die is uniformly arranged along the circumferential direction of the second turntable, and the second turntable is provided with a blister feeding station, a bottom placing and clamping station 8, a paper plastic sealing station and a finished product discharging station; the blister transfer mechanism 7 comprises a turnover feeding device, the turnover feeding device is arranged between the discharging station and the blister feeding station and is connected with a first transmission die 51 of the discharging station and a second transmission die 52 of the blister feeding station, namely, the turnover feeding device turns over the plastic-sealed shell to enable the sealing surface to be arranged upwards and sends the plastic-sealed shell to the second transmission die 52; the paper plastic heat sealing mechanism 9 is arranged at a paper plastic sealing station.

According to the invention, a first material is processed into a first bulb shell by a first bulb shell forming mechanism 3, the first bulb shell is conveyed to a first transmission mold 51 through a first bulb shell blanking device 11, a first rotating disk 1 rotates, the first bulb shell is conveyed to a feeding station for feeding, the feeding can be carried out by manual feeding or by a feeding mechanism, the first bulb shell is conveyed to a second bulb shell blanking station after feeding, a second material is processed into a second bulb shell by a second bulb shell forming mechanism 2, the second bulb shell blanking device 12 conveys the second bulb shell to a first transmission mold 52, namely, the second bulb shell covers the first bulb shell, the second bulb shell and the first bulb shell are conveyed to a sealing station, a plastic sealing mechanism 6 seals the sealing surfaces of the first bulb shell and the second bulb shell to form a sealed shell, the turnover feeding device 7 overturns the sealed shell to ensure that the sealing surface faces upwards, the overturned shell is conveyed to a second transmission mold 52, the second rotating disk 2 rotates, the shell is conveyed to a bottom card placing station 8, the bottom card is arranged above the shell, namely the bottom card is attached to the sealing surface of the shell, then the bottom card is conveyed to a paper plastic sealing station, a paper plastic heat sealing mechanism 9 seals the paper card and the shell into a whole, the packaging is completed, and finally the finished product is taken out from a finished product discharging station.

The turnover feeding device 7 comprises a first material sucking part 21, a first turnover part for driving the first material discharging part to turn over, a first lifting part 20 for driving the first material sucking part to lift, a second material sucking part 15, a second turnover part for driving the second material sucking part to turn over and a second lifting part 19 for driving the second material sucking part to lift, wherein the second material sucking part and the first material sucking part are matched for sucking materials, namely the first material sucking part 21 sucks and turns over the shell, so that the shell faces the second material sucking part 15, the second material sucking part turns over the shell after receiving the shell, finally the shell turns over for 180 degrees, the front cover of the shell faces upwards, and the second material sucking part 15 sends the turned shell to the second transmission die 52; referring to fig. 2, the first lifting component 20 and the second lifting component 19 may adopt an air cylinder or a screw rod mechanism, the first turning component and the second turning component may adopt a rotating shaft and a power component for driving the rotating shaft to rotate, the power component may adopt a rotary air cylinder, a motor and the like, the air cylinder 18 and the swing arm 17 are adopted in the drawing to be combined to drive the rotating shaft 16 to rotate, and the rotating shaft 16 rotates to drive the first material suction component 21 or the second material suction component 15 installed on the rotating shaft to turn. In order to facilitate the maintenance operation, the distance between the first rotating disc 1 and the second rotating disc 2 is increased, the blister transfer mechanism further comprises a blister moving device 50, the travel of the blister moving device for sending the blisters is increased, the distance between the first rotating disc and the second rotating disc is further increased, the bulb shell moving device comprises a base 53, a moving plate 22, a driving part 24 for driving the moving plate to horizontally move on the base, a third material sucking part, a moving part for driving the third material sucking part to horizontally move and a third lifting part for driving the third material sucking part to lift, the moving plate 22 is provided with a material placing groove 23, the driving part, the moving part and the lifting part can also adopt an air cylinder or a screw rod mechanism and the like, in order to ensure the moving stability of the moving plate, the base can be provided with a guide rail, the first material suction part 21, the second material suction part 15 and the third material suction part can adopt suction nozzles, and the suction nozzles are connected with an air source. When the bubble shell moving device works, the material absorbing part III moves horizontally to a material discharging station and moves downwards to absorb the shell in the first transmission die 51, then the material absorbing part III moves upwards and moves horizontally towards the moving plate, then the material absorbing part III moves downwards to place the bubble shell in the material placing groove 23 on the moving plate 22, the material absorbing part III resets and then takes the material after the completion, the driving part drives the moving plate 22 to move towards the material absorbing part I21, after the material absorbing part I21 moves downwards to absorb the shell on the moving plate, the moving plate moves reversely to reset, the material absorbing part I moves upwards, the turning part I drives the material absorbing part I21 to turn over, the sealing surface of the shell faces the material absorbing part II 15, the material absorbing part II absorbs and turns over the shell, the material absorbing part I resets, the turned shell sealing surface is arranged upwards, the material absorbing part II 15 moves downwards to place the shell in the second transmission die 52 of the second bubble shell discharging station, thus completing the transfer of the shells.

Material leakage may occur during feeding, in order to avoid the problem of empty package, first carousel 1 still is equipped with visual detection station 13, visual detection station sets up between reinforced station and second cell-shell unloading station, visual detection station is equipped with image sensor, image sensor is connected with the electropneumatic controller, each mechanism of button cell packagine machine just can be connected with the electropneumatic controller. Image sensor shoots the first transmission mould after feeding in raw material to will shoot the picture and send for the electric controller, through comparing, if there is the material leakage condition, the electric controller sends the instruction, shuts down or sends out the police dispatch newspaper, reminds the staff, so avoid not having the material packing, all have the material in guaranteeing every packing carton.

The button cell packaging machine further comprises a feeding mechanism 5, the feeding mechanism comprises a tray unstacking device and a tray recovery device, the tray unstacking device comprises a tray conveying part, a unstacking part and a manipulator 14 for conveying the material on the feeding table 32 to the first transmission die 51, and the manipulator is arranged at the feeding station; the tray conveying component comprises a conveying piece which is longitudinally arranged, the conveying piece can adopt a conveying belt and is conveyed by the conveying belt, in the embodiment, the conveying piece comprises a first conveying belt 26, a second conveying belt 28, a third conveying belt 31 and a material supporting plate 27, the first conveying belt, the second conveying belt and the third conveying belt are sequentially arranged along the conveying direction and are mutually connected, stop blocks 25 are uniformly distributed on the first conveying belt 26, a tray accommodating area is formed between every two adjacent stop blocks, the third conveying belt 31 is arranged on the left side and the right side of a supporting plate 29 and a feeding table 32, a waiting station is arranged behind the supporting plate, and the material supporting plate 27 and the second conveying belt 28 are arranged at the waiting station; the unstacking component comprises a support plate 29 capable of lifting up and down, an inserting plate 30 capable of moving transversely and a feeding platform 32, the inserting plate is arranged above a third conveying belt 31 of the conveying part and arranged on the left side and the right side of the support plate 29, and the feeding platform 32 is arranged in front of the support plate 29; the tray is provided with material troughs which are orderly arranged, a button cell is placed in each material trough, a stack of trays is arranged in a tray accommodating area on a first conveying belt 26, the first conveying belt drives the trays to convey forwards, the trays are conveyed to a waiting station, the trays are arranged on a material supporting plate 27 to wait, at the moment, a supporting plate 29 moves upwards and pushes the trays to move upwards, an inserting plate 30 is inserted, other trays except the bottommost tray on the supporting plate 29 are supported by the inserting plate 30, the supporting plate moves downwards, the bottommost tray is arranged on the supporting plate, the third conveying belt 31 conveys the trays to a material feeding platform 32, a manipulator 14 conveys the trays to a first transmission mould 51, in order to ensure that the material feeding is more stable, the unstacking component further comprises a front baffle plate 38 and a rear baffle plate 37 which are lifted up and down, the front baffle plate and the rear baffle plate are respectively arranged on the front side and the rear side of the material feeding platform 32, and the front baffle plate 38 moves upwards during the, third conveyer belt 31 is sent the tray to the charging floor on until tray and preceding baffle contact, and then backplate 37 moves up, prevents that a back tray from getting into, manipulator 14 accomplishes reinforced back, and preceding, backplate move down, and the tray after getting the material then can adopt the manual work to take away, perhaps adopts tray recovery unit to unify and collect, moves up the resetting after that preceding baffle 38, layer board 29 shifts up again, leave the height of a tray between layer board and the picture peg 30, the picture peg withdraws from the tray and arranges in on the layer board, the picture peg inserts once more then holds the tray again, so relapse, and it is reinforced until the whole completion of a pile of tray, second conveyer belt 28 will wait for the tray of station to send to layer board 29 on.

The feeding mechanism further comprises a tray recovery device, the tray recovery device comprises a tray stacking part and a recovery slideway 36 which is longitudinally arranged, the recovery slideway is arranged in front of the conveying part, namely in front of the third conveying belt 31, the recovery slideway can also adopt a conveying belt, in the embodiment, the recovery slideway consists of a plurality of rollers which are longitudinally arranged, and the tray at the rear can push the tray at the front to move on the recovery slideway 36; the tray stacking part comprises a stacking platform 40 capable of lifting up and down, a stacking frame 39, a material supporting block 41, a pushing plate 34 capable of moving back and forth and a torsion spring, wherein the pushing plate can move up and down and the stacking platform can be lifted by adopting an air cylinder, the stacking frame 39 is arranged on the left side and the right side of the stacking platform 40, the material supporting block 41 is arranged on the stacking frame 39 through a rotating shaft, the upper surface of the material supporting block is a material supporting surface, the pushing plate 34 is arranged above the stacking platform 40, one end of the torsion spring is connected with the rotating shaft, the other end of the torsion spring is connected with the stacking frame 39, after the tray is used, the tray is conveyed forwards to the stacking platform 40 by a third conveying belt 31, the stacking platform moves upwards to overcome the elasticity of the torsion spring and push the material supporting block 41 to swing upwards, the tray moves upwards to be above the material supporting block, the stacking platform 40 moves downwards to be reset, the elasticity of the torsion spring enables, the trays are placed on the material supporting surface of the material supporting block, namely the trays are supported by the material supporting block, so that automatic stacking is realized, and when the trays are stacked to a set number, the trays are finally pushed to the recovery slideway 36 by the push plate 34.