CN114986869B - Lithium battery heat treatment film pasting device and method - Google Patents

Abstract

The invention discloses a lithium battery heat treatment film sticking device in the technical field of lithium battery heat treatment films, which comprises a feeding ring barrel, wherein an inclined slide tube used for guiding a lithium battery to slide is fixedly arranged on the side wall of the feeding ring barrel, the slide tube is fixedly communicated with the inner cavity of the feeding ring barrel, one end of the slide tube, which is far away from the feeding ring barrel, is provided with a feeding notch, a vertical baffle is fixedly arranged on the side wall of one end of the feeding notch, and a discharging baffle is fixedly arranged on the other end of the feeding notch; the invention solves the problems that the existing film sticking equipment adopts the mode that the lithium battery is put flat for film sticking, and because the two ends or the lower end of the battery need supporting points, the heat shrinkage film cannot be sleeved on the surface of the lithium battery on the equipment, so that manual film sleeving is needed, and the film is put on heat treatment equipment for heating after film sleeving is finished, so that the heat shrinkage film is shrunk on the surface of the lithium battery, and the manual participation degree is higher, thereby the working efficiency is low.

Description

A lithium battery heat treatment film laminating device and method

Technical Field

The present invention relates to the technical field of lithium battery heat treatment film pasting, and in particular to a lithium battery heat treatment film pasting device and method.

Background technique

Lithium battery is a primary battery that uses lithium metal or lithium alloy as the negative electrode material and non-aqueous electrolyte solution. With the development of microelectronics technology at the end of the 20th century, miniaturized devices have increased, which has put forward high requirements for power sources. Lithium batteries have entered the large-scale practical stage; in order to avoid scratches on the surface of the lithium-ion battery shell during transportation, a protective film needs to be attached to the surface of the lithium-ion battery.

The existing film laminating equipment lays the lithium battery flat for film laminating. Since the two ends or the lower end of the battery require support points, the heat shrink film cannot be sleeved on the surface of the lithium battery on the equipment, so manual film laminating is required. After the film laminating is completed, it is placed on the heat treatment equipment for heating, so that the heat shrink film shrinks to the surface of the lithium battery. This method has a high degree of manual participation, which leads to the problem of low work efficiency. Secondly, the existing lithium battery heat treatment film laminating equipment uses a fixed heating port for heating, which easily causes uneven shrinkage of the heat shrink film, thereby causing the film to be offset.

Based on this, the present invention designs a lithium battery heat treatment film pasting device and method to solve the above problems.

Summary of the invention

The object of the present invention is to provide a lithium battery heat treatment film laminating device and method to solve the problems of the prior art shortcomings mentioned in the above background technology.

To achieve the above object, the present invention provides the following technical solutions:

A lithium battery heat treatment film pasting device comprises a feed ring barrel, a side wall of the feed ring barrel is fixedly provided with an inclined sliding tube for guiding the sliding of the lithium battery, the sliding tube is fixed to the feed ring barrel and is connected with the inner cavity of the feed ring barrel, a feeding notch is opened at one end of the sliding tube away from the feed ring barrel, a vertical baffle is fixedly provided on the side wall at one end of the feed notch, a discharge baffle is fixedly provided at the other end of the feed notch, the discharge baffle is lower at the end close to the feed notch, a gradient ring barrel for guiding the vertical falling of the lithium battery is fixedly provided at the lower end of the feed ring barrel, a vertical barrel is fixedly provided at the lower end of the gradient ring barrel, and a packaging mechanism for vertical thermal film pasting of the lithium battery is provided at the lower end of the vertical barrel.

As a further solution of the present invention, the packaging mechanism includes a sealing ring barrel fixedly arranged on the outer wall of the lower end of the gradient ring barrel by a bracket, the sealing ring barrel is coaxially arranged with the vertical barrel, and the sealing ring barrel is located at the lower end of the vertical barrel, the inner wall of the sealing ring barrel is sleeved with a ventilation ring barrel for placing a ring membrane, the side wall of the ventilation ring barrel is provided with a plurality of ventilation holes, the side wall of the sealing ring barrel is fixedly provided with an internally connected air intake pipe and an air intake pipe, the air intake pipe and the air intake pipe are provided with valves that can be closed when the air is not actively guided, and limiting rings are fixedly provided on the outer walls of the ventilation ring barrel located at the upper and lower ends of the sealing ring barrel, respectively, and the lower end of the ventilation ring barrel is provided with a supporting device for conveying the ring membrane into the interior of the ventilation ring barrel and limiting the height of the lithium battery.

As a further solution of the present invention, the axes of the intake pipe and the intake pipe are located at the same height, the edges of the intake pipe and the intake pipe parallel to their axes are tangent to the inner wall of the sealing ring barrel, and the outer wall of the ventilation ring barrel at the same height as the intake pipe and the intake pipe is provided with a plurality of blades for air dispersion in a circular array around their axes.

As a further scheme of the present invention, the supporting device includes a plurality of quarter-open open ring plates, a rotating frame is fixedly provided on the side wall of the open ring plate, each of the rotating frames is fixedly provided with the same angle sleeve, a fixing rod is rotatably provided at the center of the angle sleeve, the fixing rod is fixedly provided on the outer wall of the lower end of the sliding tube, the open ring plate is coaxial with the sealing ring barrel, and the upper end surface of the open ring plate contacts the lower end surface of the ventilation ring barrel, the inner wall of the lower end of the open ring plate is axially slidingly provided with a top ring plate for limiting the lower end surface of the ring membrane, the lower end of the fixing rod is fixedly provided with a bottom ring plate, the bottom ring plate is provided with a driving mechanism for driving the open ring plate to revolve and change the station, and the bottom ring plate is provided with a limiting mechanism directly below the open ring plate for pushing the top ring plate to move upward and limiting the lower end of the ventilation ring barrel at the same time.

As a further solution of the present invention, the driving mechanism includes a driving gear meshed with teeth provided on the outer wall of the lower end of the angle sleeve, and the driving gear is coaxially connected to a first motor, and the first motor is fixedly disposed on the bottom ring plate.

As a further solution of the present invention, the limiting mechanism includes an active cylinder fixedly arranged at the bottom of the bottom ring plate by a bracket, the active cylinder is coaxial with the top ring plate, the upper end side wall of the active cylinder moving sub-rod is vertically limited and slidably connected to the limiting ring plate, and the bottom ring plate is provided with an avoidance through hole for avoiding the limiting ring plate.

As a further solution of the present invention, a long circular arc hole for material withdrawal is provided on the bottom ring plate along the revolution path of the open ring plate.

As a further solution of the present invention, a partition for intermittent unloading is provided on the sliding tube, and a unloading sleeve is rotatably arranged on the upper end of the sliding tube through a bracket. The unloading sleeve is connected to a unloading gear through a tooth transmission provided on the rear end outer wall, and a second motor is coaxially connected to the rear end of the unloading gear. The second motor is fixedly arranged on the outer wall of the upper end of the sliding tube through a bracket, and the unloading sleeve is provided with a plurality of closed rings in a circular array around its axis that can interrupt the partition.

As a further solution of the present invention, a sensor with different contact areas with the positive and negative terminals of the lithium battery is provided on the closed ring, a straightening tube coaxial with the sliding tube is fixedly provided on the outer wall of the feed ring barrel, the straightening tube is connected to the internal cavity of the feed ring barrel, an electromagnetic catapult is fixedly provided inside the straightening tube, the electromagnetic catapult can be extended according to the sensor signal, and an obstruction arc plate is fixedly provided at the extended end of the electromagnetic catapult for preventing the lithium battery from preferentially entering the descent of one end of the feed ring barrel.

A lithium battery heat treatment film laminating method, the specific steps of the lithium battery heat treatment film laminating method are as follows:

Step 1: First, transport the lithium batteries that need to be laminated to the laminating site, inspect the surface of the lithium batteries, remove surface impurities, and remove defective lithium batteries;

Step 2: Place the lithium battery on the discharge baffle, so that the lithium battery rolls down along the arc of the discharge baffle to the inside of the feed notch of the slide tube, and then slides along the slide tube to the inside of the feed ring barrel;

Step 3: The lithium battery enters the feeding ring barrel and is guided by the gradient ring barrel into the vertical barrel, and then enters the ventilation ring barrel. At this time, the active cylinder just supports the lithium battery, making the lithium battery still. Then, the hot air is passed into the sealing ring barrel through the external hot air blower to heat and shrink the ring film on the inner wall of the ventilation ring barrel to the surface of the lithium battery, completing the thermal lamination process;

Step 4: The active cylinder contracts and descends, causing the lithium battery with the film attached to fall onto the inner wall of the open ring plate. Thereafter, the first motor drives the open ring plate to revolve and drives the lithium battery out of the lower end of the ventilation ring barrel to complete the unloading.

Compared with the prior art, the present invention has the following beneficial effects:

1. The present invention guides the lithium battery into the sliding tube and then into the feeding ring barrel through the discharge baffle, guides the lithium battery from the gradient ring barrel into the vertical barrel, quickly converts the lithium battery into a vertical placement state and enters the inside of the ventilation ring barrel, and is limited by the support device and stands in the center of the ventilation ring barrel, and then absorbs the heat shrink film onto the ventilation ring barrel through the suction pipe, so that the lithium battery is not disturbed by the heat shrink film when falling, and finally blows hot air into the ventilation ring barrel through the intake pipe to make the ventilation ring barrel rotate inside the sealing ring barrel, switch the heating position, and make the heat shrink film evenly heated and shrink to the outer surface of the lithium battery, thereby completing the coating process of the lithium battery, so that the lithium battery is vertically coated, and the supports at both ends do not interfere with the shrinkage of the heat shrink film, and the shrinkage process of the heat shrink film is not affected by gravity.

2. The present invention drives the open ring plate with the heat shrink film to switch positions and dock with the ventilation ring barrel through the first motor, and then the active cylinder works to lift the limit ring plate upward along the inner wall of the open ring plate. At the same time, the top ring plate pushes the heat shrink film in the open ring plate to the inner wall of the ventilation ring barrel for heat shrinkage preparation, thereby improving work efficiency and enabling the limit ring plate to support the lithium battery that is about to fall, thereby completing the functions of automatic film covering and automatic positioning.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

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

FIG2 is a schematic diagram of the overall structure of the present invention from a bottom-up perspective;

FIG3 is an enlarged structural schematic diagram of point A in FIG2 of the present invention;

FIG4 is a schematic diagram of a partial cross-sectional structure of the present invention from a side plan view;

FIG5 is an enlarged structural schematic diagram of point B in FIG4 of the present invention;

FIG6 is an enlarged schematic diagram of the structure at C in FIG4 of the present invention;

FIG7 is an enlarged structural schematic diagram of point D in FIG4 of the present invention;

FIG8 is a schematic diagram of the overall structure of the method process of the present invention.

In the accompanying drawings, the components represented by the reference numerals are listed as follows:

Feed ring barrel 10, slide pipe 11, feed notch 12, vertical baffle 13, discharge baffle 14, gradient ring barrel 15, vertical barrel 16, sealing ring barrel 20, ventilation ring barrel 21, ventilation hole 22, air inlet pipe 23, air intake pipe 24, limit ring 25, blade 27, open ring plate 30, rotating frame 31, angle sleeve 32, fixing rod 33, top ring plate 34, bottom ring plate 35, driving gear 38, first motor 39, active cylinder 42, limit ring plate 43, material return long arc hole 44, partition 46, unloading sleeve 47, unloading gear 48, second motor 49, closing ring 50, straightening tube 52, electromagnetic ejector 53, obstruction arc plate 54.

Detailed ways

The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

Please refer to Figures 1-8. The present invention provides a technical solution: a lithium battery heat treatment film pasting device, comprising a feed ring barrel 10, a side wall of the feed ring barrel 10 is fixedly provided with an inclined slide tube 11 for guiding the sliding of the lithium battery, the slide tube 11 is fixed to the feed ring barrel 10 and is connected to the inner cavity of the feed ring barrel 10, a feed notch 12 is opened at one end of the slide tube 11 away from the feed ring barrel 10, a vertical baffle 13 is fixedly provided on the side wall at one end of the feed notch 12, a discharge baffle 14 is fixedly provided at the other end of the feed notch 12, the discharge baffle 14 is lower at the end close to the feed notch 12, a gradient ring barrel 15 for guiding the vertical fall of the lithium battery is fixedly provided at the lower end of the feed ring barrel 10, a vertical barrel 16 is fixedly provided at the lower end of the gradient ring barrel 15, and a packaging mechanism for vertical thermal film pasting packaging of the lithium battery is provided at the lower end of the vertical barrel; the packaging mechanism comprises a sealing ring barrel 20 fixedly provided on the outer wall of the lower end of the gradient ring barrel 15 by a bracket, and the sealing ring barrel 20 and the vertical barrel 16 are fixed at the same The shaft is arranged, and the sealing ring barrel 20 is located at the lower end of the vertical barrel 16. The inner wall of the sealing ring barrel 20 is provided with a vent ring barrel 21 for placing the ring membrane. The side wall of the vent ring barrel 21 is provided with a plurality of vent holes 22. The side wall of the sealing ring barrel 20 is fixedly provided with an internally connected inlet pipe 23 and an air suction pipe 24. The inlet pipe 23 and the air suction pipe 24 are provided with valves that can be closed when the air is not actively guided. The outer walls of the vent ring barrel 21 located at the upper and lower ends of the sealing ring barrel 20 are respectively fixed with A limiting ring 25 is provided at the lower end of the ventilation ring barrel 21 with a supporting device for conveying the ring film into the ventilation ring barrel 21 and limiting the height of the lithium battery; the axes of the air inlet pipe 23 and the air intake pipe 24 are located at the same height, and the edges of the air inlet pipe 23 and the air intake pipe 24 parallel to their axes are tangent to the inner wall of the sealing ring barrel 20, and a plurality of blades 27 for dispersing air are provided in a circular array around their axes on the outer wall of the ventilation ring barrel 21 at the same height as the air inlet pipe 23 and the air intake pipe 24;

Before using the present invention, the device is assembled first, as shown in FIG1 , the upper end of the device is viewed from the top to the bottom of FIG1 , and the right end of the device is viewed from the right side to the left of FIG1 , and the device orientation is used for description, and no further description is given;

When the present invention is used, the lithium battery is placed on the discharge baffle 14 manually or by an existing stacking device, and the axis of the battery is kept parallel to the semicircular arc axis of the feed notch 12. Since the end of the discharge baffle 14 close to the feed notch 12 is lower, the lithium battery rolls on the discharge baffle 14 and enters the feed notch 12 (as shown in FIG. 1 , the function of the vertical baffle 13 is to prevent the lithium battery from moving too fast on the discharge baffle 14 and rushing out of the feed notch 12, thereby causing the problem of falling). Since the outer wall of the lithium battery is smooth, and the slideway composed of the feed notch 12 and the slide tube 11 is located at a lower end of the feed ring barrel 10, As a result, the lithium battery slides toward the feeding ring barrel 10 (the sliding direction of the lithium battery in the sliding tube 11, whichever end is lower will be located at the lower end, and the direction of the lithium battery cannot be adjusted), and then falls into the feeding ring barrel 10. After the lithium battery enters the feeding ring barrel 10, it will be guided into the vertical barrel 16 through the gradient ring barrel 15, and then the lithium battery continues to be affected by its own gravity and enters the ventilation ring barrel 21 (as shown in Figures 4 and 5, when the battery has not entered the ventilation ring barrel 21, the heat shrink film should be placed in the ventilation ring barrel 21 manually, and the air inlet pipe 23 with a valve is closed at this time, and then the air intake pipe 24 is exhausted to the outside to make the seal Negative pressure is formed inside the ring barrel 20, and the air on the outer wall of the heat shrink film is extracted from the vent hole 22, so that the heat shrink film is attached to the inner wall of the vent ring barrel 21, which does not affect the automatic falling process of the lithium battery. In this process, the local air pressure of the suction pipe 24 is reduced, so that the air flow near the blade 27 changes, so that the blade 27 rotates, and the rotation of the blade 27 drives the vent ring barrel 21 to rotate inside the sealing ring barrel 20. The limiting ring 25 acts to make the sealing ring barrel 20 move up and down, so that the heat shrink film is automatically flattened on the inner wall of the vent ring barrel 21 by the centrifugal force, and the upper and lower positions of the vent ring barrel 21 are adjusted, so that The heat shrink film is automatically straightened), and the lithium battery is then supported by the support device (the heat shrink film is also supported by the support device, and the problem of falling does not occur), and stays in the vent ring barrel 21. Then the air inlet pipe 23 starts to pressurize and blow hot air into the sealing ring barrel 20, and the valve of the air intake pipe 24 is closed. The hot air blows the blades 27 to make the vent ring barrel 21 rotate inside the sealing ring barrel 20, and at the same time blows the heat shrink film to the surface of the lithium battery. At the same time, the rotation of the vent ring barrel 21 causes the vent hole 22 to switch, so that the heat shrink film is quickly heated and shrunk to the surface of the lithium battery, so that the heat shrink film is heated more evenly, thereby completing the film pasting work of the lithium battery;

The present invention guides the lithium battery into the slide tube 11 and then into the feed ring barrel 10 through the discharge baffle 14, guides the lithium battery from the gradient ring barrel 15 into the vertical barrel 16, quickly converts the lithium battery into a vertical placement state and enters the inside of the ventilation ring barrel 21, and is limited by the support device and stands in the center of the ventilation ring barrel 21, then the heat shrink film is adsorbed onto the ventilation ring barrel 21 through the suction pipe 24, so that the lithium battery is not disturbed by the heat shrink film when falling, and finally hot air is blown into the ventilation ring barrel 21 through the intake pipe 23 to make the ventilation ring barrel 21 rotate inside the sealing ring barrel 20, and the heating position is switched, so that the heat shrink film is evenly heated and shrunk to the outer surface of the lithium battery, thereby completing the coating process of the lithium battery, so that the lithium battery is vertically coated, and the supports at both ends do not interfere with the shrinkage of the heat shrink film, and the shrinkage process of the heat shrink film is not affected by gravity.

As a further solution of the present invention, the supporting device includes a plurality of quarter-open open ring plates 30, a rotating frame 31 is fixedly provided on the side wall of the open ring plate 30, each rotating frame 31 is fixedly provided with the same angle sleeve 32, a fixing rod 33 is rotatably provided at the center of the angle sleeve 32, the fixing rod 33 is fixedly provided on the outer wall of the lower end of the sliding tube 11, the open ring plate 30 is coaxial with the sealing ring barrel 20, and the upper end surface of the open ring plate 30 is in contact with the lower end surface of the ventilation ring barrel 21, the inner wall of the lower end of the open ring plate 30 is axially slidably provided with a top ring plate 34 for limiting the lower end surface of the ring membrane, the lower end of the fixing rod 33 is fixedly provided with a bottom ring plate 35, and a driving mechanism for driving the open ring plate 30 to revolve and change the station is provided on the bottom ring plate 35, and the bottom ring plate 35 is located at the open ring plate 30 A limiting mechanism is provided directly below for pushing the top ring plate 34 to move upward and limiting the lower end of the ventilation ring barrel 21 at the same time; the driving mechanism includes a driving gear 38 meshed with teeth provided on the outer wall of the lower end of the angle sleeve 32, and the driving gear 38 is coaxially connected to a first motor 39, and the first motor 39 is fixedly arranged on the bottom ring plate 35; the limiting mechanism includes an active cylinder 42 fixedly arranged at the bottom of the bottom ring plate 35 through a bracket, the active cylinder 42 is coaxial with the top ring plate 34, and the upper end side wall of the active cylinder 42 moving sub-rod is vertically limited and slidably connected to the limiting ring plate 43, and an avoidance through hole for avoiding the limiting ring plate 43 is provided on the bottom ring plate 35; a long circular arc hole 44 for material withdrawal is provided on the bottom ring plate 35 along the revolution path of the open ring plate 30;

When the present invention is in use, the first motor 39 works to drive the driving gear 38 to rotate, and the driving gear 38 rotates to drive the angle sleeve 32 to rotate clockwise (viewed from the upper end of the equipment), and the angle sleeve 32 rotates to drive the rotating frame 31 to rotate, and the rotating frame 31 rotates to drive the open ring plate 30 to switch its position (before switching to the lower end of the ventilation ring barrel 21, the heat shrink film should be placed on the inner wall of the open ring plate 30, and the opening of the open ring plate 30 is for the convenience of placing the heat shrink film in the open ring plate 30). When the open ring plate 30 is displaced to the lower end of the ventilation ring barrel 21 and docked with the ventilation ring barrel 21, the active cylinder 42 starts to work, thereby pushing the limit ring plate 43 upward along the open ring plate 30 (a convex point is provided in the center of the limit ring plate 43 to lift the lithium battery, and the convex point is higher than the upper surface of the top ring plate 34, so that the lower end of the heat shrink film can shrink to a part of the lower end surface of the lithium battery). The plate 43 moves upward to push the top ring plate 34 upward, thereby pushing the heat shrink film placed on the inner wall of the open ring plate 30 upward into the ventilation ring barrel 21, and at the same time, the limiting ring plate 43 provides a certain support to the bottom of the lithium battery, thereby completing the support process during the heat shrink film application of the lithium battery; after the lithium battery film application is completed, the active cylinder 42 contracts the limiting ring plate 43 and moves the lithium battery with the film applied as a whole out of the ventilation ring barrel 21 and into the open ring plate 30. The top ring plate 34 is automatically lowered along the inner wall of the open ring plate 30 along with the limiting ring plate 43 under the action of gravity. When the lithium battery completely enters the open ring plate 30, the first motor 39 rotates to drive the open ring plate 30 to change its position, so that the lithium battery changes its position along with the open ring plate 30, and at the same time, the bottom end of the battery rotates on the bottom ring plate 35, so that it falls from the long circular arc hole 44 for material withdrawal, and the unloading is completed;

The present invention drives the open ring plate 30 with the heat shrink film to switch position and dock with the ventilation ring barrel 21 through the first motor 39, and then the active cylinder 42 works to lift the limit ring plate 43 upward along the inner wall of the open ring plate 30. At the same time, the top ring plate 34 pushes the heat shrink film in the open ring plate 30 to the inner wall of the ventilation ring barrel 21 for heat shrinkage preparation, thereby improving work efficiency and enabling the limit ring plate 43 to support the lithium battery that is about to fall, thereby completing the functions of automatic film covering and automatic positioning.

As a further solution of the present invention, a partition 46 for intermittent unloading is provided on the sliding tube 11, and a unloading sleeve 47 is rotatably provided on the upper end of the sliding tube 11 through a bracket, and the unloading sleeve 47 is connected to a unloading gear 48 through a tooth transmission provided on the rear end outer wall, and a second motor 49 is coaxially connected to the rear end of the unloading gear 48, and the second motor 49 is fixedly provided on the outer wall of the upper end of the sliding tube 11 through a bracket, and a plurality of closed rings 50 that can interrupt the partition 46 are provided in a circular array around its axis; the closed ring 50 is provided with a sensor that can be used according to the different contact areas with the positive and negative terminals of the lithium battery, and a straightening tube 52 coaxial with the sliding tube 11 is fixedly provided on the outer wall of the feeding ring barrel 10, and the straightening tube 52 is connected to the internal cavity of the feeding ring barrel 10, and an electromagnetic catapult 53 is fixedly provided inside the straightening tube 52, and the electromagnetic catapult 53 can be extended according to the sensor signal, and an obstruction arc plate 54 for preventing the lithium battery from preferentially entering the feeding ring barrel 10 at one end and descending is fixedly provided at the extended end of the electromagnetic catapult 53;

When the present invention is used, the second motor 49 rotates to drive the unloading gear 48 to rotate, the unloading gear 48 rotates to drive the unloading sleeve 47 to rotate, and the unloading sleeve 47 rotates to drive the closed ring 50 to switch its position inside the partition 46 in the middle of the sliding tube 11, thereby blocking the feeding of the lithium battery. The lithium battery then hits the closed ring 50, thereby detecting the positive and negative poles of the battery, and then outputting a signal to make the electromagnetic ejector 53 in the straightening tube 52 work. The electromagnetic ejector 53 drives the obstruction arc plate 54 to extend or remain stationary, thereby blocking or directly releasing one end of the lithium battery entering the feed ring barrel 10, thereby changing the direction of the lithium battery entering the vertical barrel 16, so that the positive or negative pole of the battery can always be kept upward, and it is set according to needs to facilitate the film sticking work.

A lithium battery heat treatment film laminating method, the specific steps of the lithium battery heat treatment film laminating method are as follows:

Step 1: First, transport the lithium batteries that need to be laminated to the laminating site, inspect the surface of the lithium batteries, remove surface impurities, and remove defective lithium batteries;

Step 2: Place the lithium battery on the discharge baffle 14, so that the lithium battery rolls along the arc of the discharge baffle 14 to the inside of the feed notch 12 of the slide tube 11, and then slides along the slide tube 11 to the inside of the feed ring barrel 10;

Step 3: The lithium battery enters the feeding ring barrel 10 and is guided by the gradient ring barrel 15 into the vertical barrel 16, and then enters the ventilation ring barrel 21. At this time, the active cylinder 42 just supports the lithium battery, making the lithium battery still, and then the hot air is passed into the sealing ring barrel 20 through the external hot air blower, and the ring film on the inner wall of the ventilation ring barrel 21 is heated and heat-shrunk to the surface of the lithium battery, completing the thermal film laminating process;

Step 4: The active cylinder 42 contracts and descends, so that the lithium battery with film attached falls to the inner wall of the open ring plate 30, and then the first motor 39 drives the open ring plate 30 to rotate to drive the lithium battery out of the lower end of the ventilation ring barrel 21 to complete the unloading.

Claims (9)

1. The utility model provides a lithium cell thermal treatment pad pasting device, includes feeding ring bucket (10), its characterized in that: the lithium battery packaging machine is characterized in that an inclined slide tube (11) used for guiding the lithium battery to slide is fixedly arranged on the side wall of the feeding annular barrel (10), the slide tube (11) is fixedly connected with the feeding annular barrel (10) and is communicated with the inner cavity of the feeding annular barrel (10), a feeding notch (12) is formed in one end, far away from the feeding annular barrel (10), of the slide tube (11), a vertical baffle (13) is fixedly arranged on the side wall of one end of the feeding notch (12), a discharging baffle (14) is fixedly arranged at the other end of the feeding notch (12), one end, close to the feeding notch (12), of the discharging baffle (14) is low, a gradual change annular barrel (15) used for guiding the lithium battery to vertically fall is fixedly arranged at the lower end of the feeding annular barrel (10), and a vertical barrel (16) is fixedly arranged at the lower end of the gradual change annular barrel, and a packaging mechanism used for vertically thermally laminating and packaging the lithium battery is arranged at the lower end of the vertical barrel;

The packaging mechanism comprises a sealing ring barrel (20) fixedly arranged on the outer wall of the lower end of a gradual change ring barrel (15) through a support, the sealing ring barrel (20) and a vertical barrel (16) are coaxially arranged, the sealing ring barrel (20) is positioned at the lower end of the vertical barrel (16), a ventilation ring barrel (21) for placing a ring membrane is sleeved on the inner wall of the sealing ring barrel (20), a plurality of ventilation holes (22) are formed in the side wall of the ventilation ring barrel (21), an air inlet pipe (23) and an air suction pipe (24) which are communicated with each other are fixedly arranged on the side wall of the sealing ring barrel (20), a valve capable of being closed when air is not actively conducted is arranged on the air inlet pipe (23) and the air suction pipe (24), a limiting ring (25) is fixedly arranged on the outer wall of the ventilation ring barrel (21) at the upper end and the lower end of the sealing ring barrel (20), and the lower end of the ventilation ring barrel (21) is provided with a supporting device for conveying the ring membrane to the inside the ventilation ring barrel (21) and carrying out height limitation on a lithium battery.

2. The lithium battery heat treatment film sticking device according to claim 1, wherein: the air inlet pipe (23) and the air suction pipe (24) are located at the same height, the side line of the air inlet pipe (23) and the air suction pipe (24) parallel to the axis is tangent to the inner wall of the sealing ring barrel (20), and a plurality of blades (27) for dispersing air are arranged on the outer wall of the air ventilation ring barrel (21) and the air inlet pipe (23) at the same height and surround the axis of the air suction pipe (24) in an annular array.

3. The lithium battery heat treatment film sticking device according to claim 2, wherein: the supporting device comprises a plurality of quarter-opening split ring plates (30), the side walls of the split ring plates (30) are fixedly provided with rotating frames (31), each rotating frame (31) is fixedly provided with a same angle sleeve (32), each angle sleeve (32) is provided with a fixing rod (33) in a rotating mode, each fixing rod (33) is fixedly arranged on the outer wall of the lower end of a sliding tube (11), the split ring plates (30) are coaxial with a sealing ring barrel (20), the upper end faces of the split ring plates (30) are in contact with the lower end face of a ventilation ring barrel (21), top ring plates (34) used for limiting the lower end face of the ring membrane are axially arranged on the inner wall of the lower end of the split ring plates (30) in a sliding mode, a bottom ring plate (35) is fixedly arranged at the lower end of each fixing rod, a driving mechanism used for driving the split ring plates (30) to revolve and change stations is arranged under the split ring plates (35), and the limiting mechanisms used for pushing the top ring plates (34) to move upwards and limit the lower end of the ventilation ring barrel (21) simultaneously.

4. A lithium battery heat treatment film sticking device according to claim 3, wherein: the driving mechanism comprises a driving gear (38) meshed with the outer wall of the lower end of the angle sleeve (32) through teeth, the driving gear (38) is connected with a first motor (39) in a coaxial transmission manner, and the first motor (39) is fixedly arranged on the bottom ring plate (35).

5. The lithium battery heat treatment film sticking device according to claim 4, wherein: the limiting mechanism comprises a driving air cylinder (42) fixedly arranged at the bottom of a bottom ring plate (35) through a support, the driving air cylinder (42) and a top ring plate (34) are coaxial, a limiting ring plate (43) is vertically and slidably connected to the side wall of the upper end of a moving sub rod of the driving air cylinder (42), and an avoidance through hole for avoiding the limiting ring plate (43) is formed in the bottom ring plate (35).

6. The lithium battery heat treatment film sticking device according to claim 5, wherein: the bottom ring plate (35) is provided with a material returning long circular arc hole (44) for returning materials along the revolution path of the opening ring plate (30).

7. The lithium battery heat treatment film sticking device according to claim 1, wherein: the automatic feeding device is characterized in that a partition (46) for intermittent feeding is arranged on the sliding tube (11), a feeding sleeve (47) is arranged at the upper end of the sliding tube (11) through a support in a rotating mode, a feeding gear (48) is connected with the feeding sleeve (47) through tooth transmission arranged on the outer wall of the rear end of the sliding tube, a second motor (49) is connected with the rear end of the feeding gear (48) through coaxial transmission, the second motor (49) is fixedly arranged on the outer wall of the upper end of the sliding tube (11) through the support, and a plurality of closed rings (50) capable of interrupting the partition (46) are arranged on the annular array of the feeding sleeve (47) around the axis of the feeding sleeve.

8. The lithium battery heat treatment film sticking device according to claim 7, wherein: the lithium battery charging device is characterized in that an inductor which is different from the positive and negative contact areas of the lithium battery is arranged on the closed ring (50), a straightening pipe (52) coaxial with the sliding pipe (11) is fixedly arranged on the outer wall of the charging ring barrel (10), the straightening pipe (52) is communicated with the inner cavity of the charging ring barrel (10), an electromagnetic ejector (53) is fixedly arranged in the straightening pipe (52), the electromagnetic ejector (53) can stretch according to an inductor signal, and an arc blocking plate (54) for blocking the lithium battery to preferentially enter the charging ring barrel (10) and descend is fixedly arranged at the stretching end of the electromagnetic ejector (53).

9. A lithium battery heat treatment film pasting method, which is suitable for the lithium battery heat treatment film pasting device according to any one of claims 1-8, and is characterized in that: the lithium battery heat treatment film pasting method comprises the following specific steps:

step one: firstly, transferring a lithium battery needing film pasting to a film pasting site, checking the surface of the lithium battery, removing surface impurities, and removing the defective lithium battery;

step two: placing the lithium battery on a discharging baffle (14) to enable the lithium battery to roll down into a feeding notch (12) of a slide tube (11) along the radian of the discharging baffle (14), and then sliding into a feeding annular barrel (10) along the slide tube (11);

Step three: the lithium battery enters the feeding annular barrel (10) and is guided into the vertical barrel (16) by the gradual change annular barrel (15), then enters the ventilation annular barrel (21), at the moment, the active air cylinder (42) just props against the lithium battery to enable the lithium battery to be static, then hot air is introduced into the sealing annular barrel (20) through the external hot air blower, and an annular film on the inner wall of the ventilation annular barrel (21) is heated and thermally shrunk to the surface of the lithium battery to finish the thermal film pasting process;

Step four: the driving air cylinder (42) contracts and descends to enable the lithium battery with the film attached to fall onto the inner wall of the split ring plate (30), and then the first motor (39) drives the split ring plate (30) to revolve to drive the lithium battery out of the lower end of the ventilation ring barrel (21) so as to finish discharging.