CN108860777B - Cylindrical cell film sleeving machine and processing method thereof - Google Patents

Abstract

The invention discloses a tubular film supply machine, a cylindrical cell film sleeving machine and a processing method thereof, wherein the tubular film supply machine comprises a film feeding mechanism for supplying a flat film, and the flat film can be flattened after being pre-opened; and the film opening mechanism is opened and positioned by applying back-to-back adsorption force from the upper surface and the lower surface of the flat film. This scheme design is exquisite, simple structure, through making the film open in advance in the transportation process of flat film, thereby can be in the follow-up opening of more convenient carrying out flat film, be favorable to improving division membrane efficiency and division membrane's sufficiency, combine automatic die sinking structure when realizing that flat film is automatic open, can effectively realize opening the location of film, thereby created the advantage for follow-up electric core inserts, simultaneously, division membrane process is carried out after the conveying roller, consequently can effectively avoid the influence of conveying roller to opening the film shape among the background art, thereby guarantee the stability and the validity of film opening the form.

Description

Cylindrical cell film sleeving machine and processing method thereof

Technical Field

The invention relates to the field of battery cell processing equipment, in particular to a cylindrical battery cell film sleeving machine and a processing method thereof.

Background

When carrying out cylinder electricity core processing, need carry out the tectorial membrane to electric core surface in order to prevent damage and pollution, therefore various tectorial membrane machines emerge like spring bamboo shoots after raining, like patent application number is: 201620043784.0, the name is: the Chinese patent of a kind of battery spouts a yard and membrane equipment, it reveals a kind of battery processing equipment that will cover the membrane, spout yard, cover the spacer device and heat shrinkage processing unit is integrated together to adopt the mode of sleeving the tubular membrane outside the vertical electric core to overlap the membrane, although its integrated level is high, it also has certain defect, mainly shows:

1. because the diameter of the inner circle of the tubular film is similar to the diameter of the battery cell, when the tubular film and the battery cell are sleeved, the tubular film and the battery cell are required to be accurately positioned, so that smooth sleeving can be ensured, the control difficulty is high, and even if the tubular film and the battery cell can be effectively ensured to be accurately aligned, the tubular film is easy to deform due to the resistance of the side wall of the battery cell in the nesting process due to the similar size and softer texture of the tubular film, and the shadow sleeving efficiency is very high.

2. Because the battery cell is in a vertical state, the battery cell is easy to topple during sleeving, so that the problem of incapability of sleeving is solved; although a certain fixing structure (clamp) is adopted to fix the battery cell, the region of the battery cell is blocked by the clamp, so that the tubular film cannot be effectively sleeved at the corresponding position, the sufficiency of the sleeve is poor, and the sleeve quality is affected.

3. Because the tubular film is cooperatively conveyed by the two clamping rods, the conveyed tubular film cannot be kept in a fully-opened state, the subsequent sleeving operation is influenced, and the positioning accuracy of the tubular film in the moving process can also be influenced due to the fact that the tubular film moves relative to the battery cell.

4. The battery cells are fixed by the clamps to be conveyed, the corresponding conveying line is a circulating line, and a plurality of clamps are needed to realize synchronous conveying of the battery cells, so that the complexity of the equipment structure and the increase of the cost are caused.

Disclosure of Invention

The invention aims to solve the problems in the prior art and provides a tubular film supply machine, a cylindrical cell film covering machine and a processing method thereof.

The aim of the invention is achieved by the following technical scheme:

a tubular film supply machine includes

A film feeding mechanism for feeding a flat film which can be flattened after pre-opening the flat film;

a film opening mechanism for opening and positioning the flat film by applying a back-to-back adsorption force from the upper and lower surfaces of the flat film;

and the support plate is at least used for supporting the film conveyed by the film conveying mechanism.

Preferably, in the tubular film supply machine, the film feeding mechanism forms a plurality of independent film channels through a limiting mechanism.

Preferably, in the tubular film supplying machine, the film feeding mechanism pre-opens the flat film by a pre-expanding device, the pre-expanding device includes at least one pair of first rollers which are arranged in a gap and can rotate around respective central axes, each pair of first rollers extends along a third direction, and a ball with a diameter larger than the gap of each pair of first rollers is arranged between the first rollers.

Preferably, in the tubular film supply machine, the die opening mechanism includes a group of high-level suction nozzles and a group of low-level suction nozzles that can reciprocate along a third direction, the high-level suction nozzles are disposed on a panel, and the panel is clamped with a driving device that drives the panel to move up and down.

Preferably, in the tubular film supply machine, the tubular film supply machine further comprises a film cutting mechanism for cutting the flat film conveyed by the film conveying mechanism into film monomers with set lengths.

Preferably, in the tubular film supply machine, the support plate is formed with arc grooves extending in the first direction, and each arc groove is formed with a hole for the low suction nozzle to penetrate.

The cylindrical cell film sleeving machine comprises any one of the tubular film supply machines and further comprises

The pushing device can push the battery cell coaxial with the tubular film into the tubular film;

a guide device comprising at least a guide member having a set of shrapnel encircling a cone, the tips of a set of said shrapnels being insertable into and withdrawable from the inner circle of the tubular membrane.

Preferably, in the cylindrical battery core sleeve molding machine, the guide member is disposed on a vertical plate, and the vertical plate moves reciprocally along the first direction in a matching manner by means of an inclined plane capable of moving reciprocally along the second direction, a second roller and a spring.

Preferably, the cylindrical battery cell sleeve die machine further comprises a battery cell conveying line for supplying battery cells, and the battery cell conveying line is located between the pushing device and the guiding device.

Preferably, the cylindrical battery core sleeve die machine further comprises a blanking device, wherein the blanking device is used for pushing the battery core on the supporting plate out of the supporting plate and comprises a pushing block capable of moving back and forth along the second direction, and the front end face of the pushing block is conical or arc-shaped.

Preferably, the cylindrical battery cell sleeve die machine further comprises a guide slope matched and connected with the supporting plate and a discharging conveying line matched and connected with the tail end of the guide slope.

Preferably, the cylindrical battery cell sleeve die machine further comprises an adjusting device for aligning two ends of the tubular film with two ends of the battery cell.

The cylindrical cell film sleeving method comprises the following steps:

s0, feeding the electric core by the electric core feeding line until the electric core is coaxial with the guide hole of the guide piece;

s1, opening and positioning a film monomer which is pre-opened and then flattened by a tubular film supply machine;

s2, inserting the tips of a group of shrapnel into the inner circle of one end of the tubular membrane;

s3, starting the pushing device to push the battery cell on the battery cell feeding line into the tubular film after passing through the guide piece;

s4, the tips of the group of shrapnel are withdrawn from the tubular membrane.

The technical scheme of the invention has the advantages that:

this scheme design is exquisite, simple structure, through making the film open in advance in the transportation process of flat film, thereby can be in the follow-up opening of more convenient carrying out flat film, be favorable to improving division membrane efficiency and division membrane's sufficiency, combine automatic die sinking structure when realizing that flat film is automatic open, can effectively realize opening the location of film, thereby created the advantage for follow-up electric core inserts, simultaneously, division membrane process is carried out after the conveying roller, consequently can effectively avoid the influence of conveying roller to opening the film shape among the background art, thereby guarantee the stability and the validity of film opening the form.

According to the cylindrical battery cell film sleeving machine, the conical elastic sheet is inserted into the tubular film and can be opened, and meanwhile, the position of the tubular film is fixed, so that when the battery cell is pushed out from the opening of the elastic sheet, the end part of the battery cell enters the tubular film, and then the battery cell can be quickly and accurately entered into the tubular film through continuous pushing, the blocking condition and the deformation condition of the tubular film caused by the similar sizes of the battery cell and the tubular film are avoided, the alignment precision of the battery cell and the opening of the tubular film is not required to be considered, the film sleeving efficiency is improved, the control precision requirement on the position is greatly reduced, and the machine is easy to realize.

The battery cell feeding line has the advantages that the battery cells are in a horizontal state, the problem of toppling cannot occur, the whole structure is greatly simplified compared with the traditional circulating line by combining a special wheel transmission structure, the occupied space is greatly reduced, the structure of an additional clamp is not needed, and the equipment cost is reduced.

This scheme can reduce the occupation space in first direction through special guide drive structure to can improve overall structure's compactness, reduce occupation space.

According to the scheme, synchronous film covering operation of a plurality of battery cells can be realized through one-time pushing action, and the film covering efficiency can be further improved on the premise of ensuring the film covering quality.

The tubular film supply machine provided by the invention is provided with the pre-expansion device, so that a certain gap is formed on the inner wall of the film which is tightly attached, and convenience is brought to subsequent smooth film opening.

The invention adopts the clamping connection mode at a plurality of positions, thereby ensuring the reliability of connection and being convenient for disassembly and maintenance.

The invention further combines the blanking device and the blanking conveying line, can realize the automation of the whole processes of feeding, film covering, blanking and conveying, has high automation degree and improves the integration level of equipment.

The setting of adjusting device can effectually guarantee the accuracy of tubular membrane's both ends and electric core's both ends position to improve the suit quality.

Drawings

FIG. 1 is a top view of the present invention;

FIG. 2 is a perspective view of the present invention;

FIG. 3 is a schematic perspective view of a cell feed line (bracket with sensor and section removed) according to the present invention;

FIG. 4 is an enlarged view of area B of FIG. 2;

FIG. 5 is a perspective view of the pushing device of the present invention;

FIG. 6 is a perspective view of the film feeding mechanism and the film cutting mechanism of the present invention;

FIG. 7 is an enlarged view of region C of FIG. 6;

FIG. 8 is a perspective view of the die opening device, the supporting plate and the blanking device in the invention;

FIG. 9 is a schematic perspective view of a guide device of the present invention;

fig. 10 is an enlarged view of the area a in fig. 1.

Detailed Description

The objects, advantages and features of the present invention are illustrated and explained by the following non-limiting description of preferred embodiments. These embodiments are only typical examples of the technical scheme of the invention, and all technical schemes formed by adopting equivalent substitution or equivalent transformation fall within the scope of the invention.

In the description of the embodiments, it should be noted that the positional or positional relationship indicated by the terms such as "center", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "inner", "outer", etc. are based on the positional or positional relationship shown in the drawings, are merely for convenience of description and simplification of description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in the specific orientation, and thus are not to be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the scheme, the direction approaching the operator is the near end, and the direction separating from the operator is the far end, with reference to the operator.

The cylindrical cell film sleeving machine disclosed by the invention is described below with reference to the accompanying drawings, and at least comprises the following components as shown in the accompanying drawings 1 and 2

The cell feeding line 1 is used for conveying the cell 10 and the conveying direction of the cell feeding line is perpendicular to the axis of the cell;

a tubular film supply machine 2 for supplying a tubular film, and positioning the tubular film, wherein the axis of the tubular film is parallel to and has the same height as the axis of the battery cell;

the pushing device 3 is parallel to the axis of the battery cell in the pushing direction and can push the battery cell 1 on the battery cell feeding line 1 into the tubular film;

the guiding device 4, as shown in fig. 9, at least comprises a guiding element 41, wherein the guiding element 41 is provided with a guiding hole 411 with the same extending direction as the battery cell and a group of elastic pieces 412 which are enclosed into a cone shape coaxial with the guiding hole 411, and the tip ends of one group of elastic pieces 412 can be embedded into and withdrawn from the inner circle of the tubular film.

As shown in fig. 3, the battery cell feeding line 1 is disposed on the supporting table 9, and includes a plurality of special-shaped turntables 11 with equal height and capable of synchronously rotating in the same direction, and the special-shaped turntables 11 with equal height and capable of synchronously rotating in the same direction form a plurality of supporting structures which are sequentially arranged, and when the special-shaped turntables 11 of each supporting structure rotate, the battery cells located on the special-shaped turntables are driven to rotate around the central axis of the special-shaped turntables 11 and are transferred to the special-shaped turntables 11 of the adjacent supporting structures.

In detail, as shown in fig. 3, the special-shaped turntable 11 is disc-shaped, a group of arc grooves 111 are all arranged on the circumferential surface of the special-shaped turntable, preferably, 5 arc grooves 111 are arranged, and the areas at two ends of each arc groove 111 are rounded, so that the electric core is placed in the arc groove 111 and is transferred, and the surface of the electric core is not damaged when being transferred between the adjacent supporting structures.

The two special-shaped turntables 11 which are coaxial and are arranged at intervals form a supporting structure, of course, one supporting structure can also be formed by a plurality of special-shaped turntables 11, the projection of each special-shaped turntable 11 in each supporting structure on the plane coaxial with the special-shaped turntables is overlapped, the special-shaped turntables 11 in the adjacent supporting structures are arranged in a staggered mode and partially overlapped, and in any state, the projection shapes of the special-shaped turntables 11 in each supporting structure on the plane perpendicular to the axes of the special-shaped turntables are the same, so that when the battery cells on one group of special-shaped turntables 11 are at the highest position, the battery cells on other groups of special-shaped turntables are all at the highest position.

As shown in fig. 3, a set of special-shaped turntables 11 (forming a supporting structure) are arranged on a rotating shaft 14 penetrating through and coaxial with the special-shaped turntables, the rotating shafts of the sets of special-shaped turntables 11 are arranged at equal intervals, a plurality of rotating shafts 14 are rotatably arranged on a bracket 15, and the intervals between two side panels of the bracket 15 are not smaller than the length of the battery cell.

As shown in fig. 3, a plurality of the profiled turntable 11 is connected to the same motor 13 through a gear transmission structure 12, in detail, one end of each rotating shaft 14 is connected to a driven gear 121, a transmission gear 122 is disposed between the driven gears 121 connected to two adjacent rotating shafts, the transmission gear 122 is rotatably disposed on the support 15, and one of the driven gears 121 or the transmission gear 122 is connected to the motor 13.

In addition, as shown in fig. 4, a sensor 16 for determining whether the battery cells 10 are on the group of special-shaped turntables 11 is arranged on the bracket 15, the sensor 16 is erected above the bracket 15 through a mounting plate 17, and when the battery cells on the group of special-shaped turntables 11 rotate to the highest position, the sensor 16 can sense, preferably, the number of the sensors is 5, and the sensors are positioned above the five groups of special-shaped turntables 11 at the tail.

Meanwhile, as shown in fig. 4, in order to enable the pushing device 3 to push the electric cores 10 on the special-shaped rotating disc 11, through holes 151 are formed in two side panels of the support 15, and the number of the through holes 151 is 5 and corresponds to the electric cores on the five groups of special-shaped rotating discs 11 one by one.

Correspondingly, as shown in fig. 1 and fig. 5, the pushing device 3 is disposed on the supporting table 9 and is located at the right end of the electric core feeding line 1, and the pushing device comprises 5 pushing rods 31 corresponding to the through holes 151 one by one, the pushing rods 31 extend along the first direction X and are disposed on the same fixing block 32, the fixing block 32 is slidably disposed on two guide rails 33 extending along the first direction X, the guide rails 33 are disposed on a base frame 34, the base frame 34 is disposed on the supporting table 9, and the fixing block 32 is further connected with a power device driving the fixing block to reciprocate along the guide rails 33, so that the above structure can realize synchronous film sleeving of five electric cores through one pushing, and the efficiency is greatly improved.

As shown in fig. 5, the power device may be of various known structures, such as a cylinder, an electric cylinder, a linear module, etc., and in a preferred embodiment, the power device includes a motor 35, the motor 35 is fixed to the bottom of the fixed block 32, a gear 36 is disposed on a motor shaft of the motor 35, and the gear 36 is engaged with a rack 37 extending along the first direction X on the frame 34, so that the movement stroke of the push rod 31 can be effectively controlled.

As shown in fig. 6 and 8, the tubular film supply machine 2 is positioned at the left side of the cell feeding line 1 and comprises at least

A film feeding mechanism 21 for feeding a flat film;

the film opening mechanism 22 opens the flat film by applying a back-facing suction force from the upper and lower surfaces of the flat film.

And, when the film feeding mechanism 21 supplies a single flat film, the film does not need to be cut, and when the film feeding mechanism supplies a flat film in a coil stock, the tubular film supply machine 2 further comprises a film cutting mechanism 23 for cutting the flat film fed by the film feeding mechanism 21 into monomers matched with the lengths of the electric cells.

In detail, as shown in fig. 6, the film feeding mechanism 21 includes a roll placement device 211, a vertical guide device 212, a horizontal guide device 213, a pre-expansion device 214, a flattening device 215, a film drawing mechanism 216, a horizontal support structure 217, a fixing mechanism 218, a conveying mechanism 219, and a limiting mechanism 210, which are sequentially arranged.

As shown in fig. 6, the roll material placing device 211 is configured to place a film roll material and drive the film roll material to be fed, and includes a frame 2111, five reels 2112 are rotatably disposed on the frame 2111, the bottoms of the reels 2112 are respectively connected with a motor 2113 that drives the reels 2112 to rotate through a speed reducer, and a film roll material placing groove 2114 that is coaxial and fixed with the reels 2112 is also disposed on the reels 2112.

As shown in fig. 6, the vertical guide 212 includes at least one pair of rollers 2121, preferably 5 pairs, extending in the third direction Z, each pair of rollers 2121 corresponding to a film roll on a reel 2112, rotatably mounted on a mounting frame 2122, and a gap between the two roller sets forms a vertical passage through which the flat film passes, and the flat film passing through the vertical passage assumes a state perpendicular to a horizontal plane.

As shown in fig. 6, the horizontal guide 213 includes at least one pair, preferably 5 pairs, of rollers 2131 extending in the second direction Y, each pair of rollers 2131 being rotatably disposed on a mounting bracket 2132, and a gap between the pair of rollers 2131 forming a horizontal passage through which the flat film passes, in which case the flat film passing through the horizontal passage assumes a state parallel to the horizontal plane.

As shown in fig. 6, the pre-expanding device 214 includes a plate 2141 parallel to the horizontal plane, at least one pair of support columns 2142, preferably 5 pairs of support columns are vertically disposed on the plate 2141, and the gap areas of the 5 pairs of support columns are staggered, the upper and lower ends of each support column 2142 are respectively rotatably provided with a first roller 2143 coaxial with the support columns, and a ball 2144 is disposed between each pair of first rollers 2143, the diameter of the ball 2144 is larger than the distance between each pair of first rollers 2143, the opening of the flat film passing through the horizontal guiding device 213 is opened, and one ball 2144 is inserted into the interior of the flat film and passes through the gap between the pair of support columns 2142, at this time, the flat film passes through the balls 2144 to expand.

As shown in fig. 6, the flattening device 215 is configured to re-flatten the film expanded by the pre-expanding device 214 into a flattened state, and the structure of the flattening device is the same as that of the horizontal guiding device 213, and will not be described again.

As shown in fig. 6, the film pulling mechanism 216 is configured to pull a film located on the film pulling mechanism and the roll placing device 211, and includes a film pulling roller 2161 extending along a second direction Y, the film pulling roller 2161 can reciprocate along a third direction Z, the film pulling roller 2161 is erected on two L-shaped plates 2162, the L-shaped plates 2162 are disposed on a top surface of a flat plate 2163, a lifting cylinder 2165 located on a gantry 2164 is connected to a bottom surface of the flat plate 2163, a piston rod of the lifting cylinder 2165 is clamped with a clamping member 2166 located at the bottom of the flat plate 2163 through a connecting member (not shown in the drawing), the flat plate 2163 is limited by a guide member on the flat plate 2164, and a flat film is located under the film pulling roller 2161.

As shown in fig. 6, the structure of the horizontal supporting structure 217 is the same as that of the horizontal guiding device 213, and will not be described herein.

As shown in fig. 6, the fixing mechanism 218 is configured to compress and fix the flat film passing through the fixing mechanism, and includes a pressing block 2181, where the pressing block 2181 is 5 independent cylinders, and they are disposed on a mounting plate 2182 extending along the second direction Y, two ends of the mounting plate 2182 are respectively connected to piston rods of the jacking cylinders 2183, a fixing plate 2184 parallel to a horizontal plane is disposed below the pressing block 2181, the flat film is located between the fixing plate 2184 and the pressing block 2181, and a limiting member (not shown in the drawing) located on the right side of the pressing block 2181 is further disposed on the fixing plate 2184, and the limiting member and the fixing plate 2184 cooperate to form five mutually-separated limiting channels, where each limiting channel corresponds to one horizontal channel of the horizontal guiding device 213.

As shown in fig. 7, the conveying mechanism 219 is used for conveying the film between the conveying mechanism 219 and the film pulling mechanism 216 to the mold opening mechanism 22, and comprises an upper roller 2191 and a lower roller 2196, two ends of the upper roller 2191 are rotatably arranged on a floating mechanism capable of floating up and down, the floating structure comprises a sliding block 2192, the sliding block is slidably arranged on two guide rails 2193, a limiting rod 2194 is arranged above the sliding block 2192, at least one spring 2195 is arranged between the top surface of the sliding block 2192 and the limiting rod 2194, the lower roller 2196 is rotatably arranged on a vertical plate, one end of the lower roller 2196 is connected with a motor 2197, and the rotating shaft of the motor 2197 is connected with one end of the lower roller 2196 through an encoder (not shown in the drawing), so that the occurrence of a slip condition can be prevented.

As shown in fig. 6, the limiting mechanism 210 has a similar structure to the limiting channels on the fixing mechanism 218, and five limiting channels 2101 are formed, so that five films can be separated from each other, and interference is avoided.

In operation, five rolls of film roll stock are placed in the five roll stock placement devices 211, and then the film of each roll of film roll stock sequentially passes through one of the vertical channels in the vertical guide device 212, one of the horizontal channels in the horizontal guide device 213, one of the balls in the pre-expansion device 214, one of the horizontal channels in the flattening device 215, below the film pulling roller of the film pulling mechanism 216, one of the horizontal channels of the horizontal support structure 217, below the pressing block of the fixing mechanism 218, between the upper and lower rollers of the conveying mechanism 219, and one of the limit channels of the limit mechanism 210.

As shown in fig. 8, the film cutting mechanism 23 includes a cylinder 231 located on the gantry 24, the cylinder 231 is connected with an upper cutter 232 and drives the upper cutter 232 to move up and down, the cylinder 231 is clamped with the upper cutter 232, two guide posts 233 which are located on the gantry 24 and extend along a third direction and can be opposite to each other of the upper cutter 232 slide, five independent cutting edges 2321 are provided at the bottom of the upper cutter 232, each cutting edge 2321 corresponds to one limiting channel in the limiting mechanism, and the bottom edge of each cutting edge 2321 is inclined, so that the cutting edge 2321 contacts with the flat film at the tip during cutting, thereby cutting more rapidly; the film cutting mechanism 23 further comprises a lower cutter 234 which is positioned below the upper cutter 232 and the cutting edge of which is matched with the cutting edge of the upper cutter.

As shown in fig. 8, the film opening mechanism 22 includes a lifting adsorption structure and a pulling adsorption mechanism, the lifting adsorption structure includes a group of high-level suction nozzles 221 connected with an air extractor (not shown in the drawing), a group of high-level suction nozzles 221 are distributed in 4 rows and 5 rows, each row of suction nozzles are arranged at equal intervals and correspond to one guide 41, a group of high-level suction nozzles 221 are arranged on a mounting plate 222, the top of the mounting plate 222 is connected with a telescopic shaft of an air cylinder 223, the air cylinder 223 is fixed on a substrate 224 above the mounting plate 222, the substrate 224 is arranged on a gantry 24 on the supporting table 9, and the substrate 224 is provided with a guide 225 which cooperates with a guide rod 226 on the mounting plate 222 to limit the mounting plate.

As shown in fig. 8, the pull-down suction mechanism includes a set of low suction nozzles 227 connected to the air extractor, a set of low suction nozzles 227 are in one-to-one correspondence with the high suction nozzles 221, they are disposed on a panel 228, a lifting cylinder 229 driving the panel 228 to reciprocate along a third direction Z is connected to the bottom of the panel 228, the lifting cylinder 229 is disposed on the supporting table 9, and the panel 228 is also limited in a horizontal direction by a guide rod and a guide member.

Further, as shown in fig. 8, the tubular film supply machine 2 further includes a support plate 5 for supporting a flat film and a film covering cell, which is fixed on the gantry 24 or the support table 9 and is located behind the guide device 4 and directly below the high suction nozzle 221, the top surface of the support plate 5 is located below the center point of a set of guide holes 411, five arc-shaped grooves 51 corresponding to the five guide pieces 41 one by one and extending along the first direction X are formed on the support plate 5, the length of the arc-shaped grooves 51 is the same as the length of the cell 10, and the lowest point of the arc-shaped grooves 51 is not higher than the lowest point of the guide holes 411.

In addition, a group of through holes 52 are formed in each arc-shaped groove 51, the lower suction nozzle 227 moves up and down, and when the lower suction nozzle 227 sucks, the suction port is consistent with the lowest end of the arc-shaped groove, so that the smart combination of the suction and support structures is realized, and the abnormal deformation of the tubular film caused by the fact that the local area of the tubular film is sucked into the through holes 52 can be effectively prevented.

As shown in fig. 9, the guide device 4 is positioned on the cell feeding line 1 and tubular film supply

The guide members 41 are ring-shaped and have the same number as the through holes 151 on the bracket 15 and are coaxial one by one, the guide members are arranged on the vertical plates 42 in equal intervals, and the end, close to the cell feeding line 1, of the guide members is kept in interval with the side panels of the guide members 15, so that an operation space is provided for the movement of the vertical plates 42, and the guide members can withdraw from the tubular films in the subsequent sleeving process, so that the efficient lamination and subsequent blanking of the cells and the tubular films can be realized conveniently.

In detail, as shown in fig. 9, the riser 42 reciprocates along the first direction X through a slope 43 capable of reciprocating along the second direction Y, a second roller 44 located thereon, and a spring 45, wherein the riser 42 is slidably mounted on two guide posts 46 extending along the first direction X, the guide posts 46 are vertically disposed on the second riser 47, the driving block on which the slope 43 is located is disposed on a sliding plate 48, the sliding plate 48 is slidably disposed on a sliding rail 49 located on the second riser 47, the sliding rail 49 extends along the second direction Y, the sliding plate 48 is connected to a driving cylinder 410 for driving the sliding plate to slide along the sliding rail 49, and the other members are clamped together, i.e. a convex hole (not shown in the figure) is formed on the sliding plate 48, and the piston rod of the driving cylinder 410 is clamped in the hole through a bolt-shaped connecting piece; and, one end of the spring 45 is engaged with a fixing pin 420 on the side surface of the riser 42, the other end is provided with a positioning pin 430 on the corresponding end of the second riser 47, and the positioning pin 430 is adjustable in position, so that the tension of the spring 45 can be adjusted.

The battery core will stay in the arc-shaped groove 51 of the supporting plate 5 after the film is covered, at this time, manual or mechanical equipment is required to perform blanking, and correspondingly, as shown in fig. 1, fig. 2 and fig. 8, the cylindrical battery core film covering machine further comprises a blanking device 6, which is used for pushing the battery core on the supporting plate 5 out of the supporting plate 5, and comprises a push block 61 capable of moving reciprocally along the second direction Y, the push block 61 is located above the top surface of the supporting plate 5, the front end surface of the push block 61 is in a conical or arc shape, preferably in a frustum-shaped groove structure formed by two right-angle trapezoids or right-angle triangles, the rear end of the push block 61 is connected with a cylinder 62 for driving the push block to move, and the cylinder 62 is arranged on the supporting table 9.

As shown in fig. 1, fig. 2 and fig. 8, after the battery core of the film is pushed down from the supporting table 5, the film covering machine for the cylindrical battery core further comprises a guiding slope 7 matched with the supporting plate 5 and a discharging conveying line 8 matched with the tail end of the guiding slope.

Wherein, as shown in fig. 9, the feeding end that the guiding slope 7 has presents loudspeaker form, and forms the structure of a spacing groove, just the inclination of guiding slope 7 is adjustable, simultaneously, guiding slope 7's top is provided with the baffle, can effectually prevent the condition that the electricity core appears beating.

As shown in fig. 10, the structure of the blanking conveying line 8 is the same as that of the special-shaped turntable and the power device of the cell feeding line 1, which are not described in detail herein, and the blanking conveying line 8 further includes an adjusting device for aligning two ends of the tubular film with two ends of the cell, the adjusting device includes two pushing mechanisms located at two sides of the blanking conveying line, each of which includes a pushing plate 811, the pushing plates 811 are respectively connected with a telescopic cylinder 812 for driving them to reciprocate along the first direction X, a set of bumps 813 are provided on an end surface of the two pushing plates 811 opposite to the other pushing plate 811, and when the bumps 813 contact with the electrode surfaces of the cell, the pushing plates 811 keep a gap with the electrode surfaces.

Finally, during the operation of the whole equipment, the start-stop and working state conversion of each motor, cylinder and other electric equipment can be controlled by various sensors through signaling or software programming, and is preferably controlled by various sensors (not shown in the figure) in combination with a PLC control system (not shown in the figure).

When the cylindrical cell film sleeving machine works, the process is as follows:

s0, a motor 13 of the battery cell feeding line is started, gear transmission is driven to drive all special-shaped turntables to rotate, at the moment, the battery cells 10 are placed into the upper arc-shaped grooves 111 on the group of special-shaped turntables 11 on the outermost side of the battery cell feeding line 1 one by one manually or through automatic equipment, at the moment, the special-shaped turntables 11 convey the battery cells to the group of special-shaped turntables 11 on the other side one by one, and when all the five sensors 16 sense the battery cells, the motor 13 stops, and at the moment, the five battery cells 10 are coaxial with the guide holes 411 of the five guide pieces 41 respectively.

S1, the tubular film supply machine 2 supplies films simultaneously or before the electric core conveying line 1 conveys the electric core, specifically, the fixing mechanism 218 fixes the films passing through the tubular film supply machine, then a motor 2113 in each coil stock placing device 211 is started to supply a section of films, the lengths of the films are the same as those of the electric core, then a piston rod of a lifting cylinder 2165 of the film pulling mechanism 216 is retracted to enable a film pulling roller 2161 to move downwards, thereby pulling a section of films supplied by the coil stock placing device 211, then a lifting cylinder 2183 of the fixing mechanism 218 drives a pressing block to move upwards, meanwhile, a motor 2197 in the conveying mechanism 219 starts to convey the films towards the direction of the supporting plate 5, and after the flat films are conveyed in place, a piston rod of a cylinder 231 in the film cutting mechanism 23 extends to enable an upper cutter 232 to move downwards and be matched with a lower cutter 234 to cut off the flat films; the upper suction nozzle 221 and the lower suction nozzle 222 are then contacted with the two planes of the flat film, respectively, and suction is performed, and then the upper suction nozzle 221 is moved up and/or the lower suction nozzle 222 is moved down, so that the flat film is opened.

S2, at this time, the driving cylinder 410 in the guide 4 is retracted, so that the vertical plate 42 is moved in the direction of the support plate 5 by the reaction force of the spring 45, and tips of a set of elastic pieces 412 of five guide members 41 thereon are respectively embedded in an opened tubular film.

S3, the motor 35 of the pushing device 3 is started to drive the five pushing rods 31 to move towards the direction of the battery cells 10, and the five battery cells 10 on the battery cell feeding line are synchronously pushed into the tubular film through the guide piece, when the battery cells 10 pass through the tip end area of the elastic sheets 412, the tips of one group of elastic sheets 412 are propped up to be consistent with the diameter of the battery cells 10, and the tips of one end of the elastic sheets 412 are positioned in the tubular film, so that the corresponding end of the battery cells is positioned in the tubular film, and the battery cells can smoothly enter the tubular film by continuous pushing, and the tubular film is adsorbed and fixed, so that the situation that the film is wrinkled when the battery cells are pushed in is avoided.

S5, after the battery cell is inserted into the tubular film in a bending way, the driving cylinder 410 in the guide device 4 stretches out, so that the tips of a group of shrapnel are withdrawn from the tubular film, the film covering is completed, and the components are reset.

S6, then, the air cylinder 62 of the blanking device 6 stretches out, 5 film-covered electric cores on the supporting plate 5 are pushed to the position of the guide inclined cape 7 through the push block 61, enter the blanking conveying line 8 through the guide inclined cape and are conveyed, when five film-covered electric cores are located at the push plate 811 on the blanking conveying line, the air cylinder 812 in the two pushing mechanisms is started, and the 5 film-covered electric cores located between the two air cylinders are clamped to realize the adjustment of the positions between the tubular films and the electric cores.

The invention has various embodiments, and all technical schemes formed by equivalent transformation or equivalent transformation fall within the protection scope of the invention.

Claims (5)

1. The cylindrical cell laminating machine is characterized in that: comprising a tubular film supply machine (2),

a pushing device (3) capable of pushing the battery cell coaxial with the tubular film into the tubular film;

a guide device (4) at least comprising a guide (41), said guide (41) having a set of shrapnel (412) enclosing a cone, the tips of a set of said shrapnels (412) being insertable into and withdrawable from the inner circle of said tubular film;

a battery cell conveying line (1) for supplying battery cells, which is positioned between the pushing device (3) and the guiding device (4);

the tubular film supply machine includes:

a film feeding mechanism (21) for feeding a flat film which can be flattened after pre-opening the flat film; the film feeding mechanism (21) forms a plurality of independent film channels through a limiting mechanism (210); the film feeding mechanism (21) pre-opens the flat film through a pre-expansion device (214), the pre-expansion device (214) comprises at least one pair of first rollers (2143) which are arranged at intervals and can rotate around respective central shafts, each pair of first rollers (2143) extends along a third direction, and a ball (2144) with a diameter larger than the interval of each pair of first rollers (2143) is arranged between the first rollers;

a film opening mechanism (22) for opening and positioning the flat film by applying a back-to-back adsorption force from the upper and lower surfaces of the flat film; the film opening mechanism (22) comprises a group of high-position suction nozzles (221) and a group of low-position suction nozzles (227) which can reciprocate along a third direction (Z), the high-position suction nozzles (221) are arranged on a panel (228), and the panel (228) is clamped with a driving device for driving the panel to move up and down;

a film cutting mechanism (23) for cutting the flat film conveyed by the film conveying mechanism (21) into film monomers with set length;

a support plate (5) at least for supporting the film conveyed by the film conveying mechanism; the support plate (5) is formed with arc grooves (51) extending in a first direction (X), and each arc groove is formed with a hole for the low-level suction nozzle to penetrate.

2. The cylindrical cell film sleeving machine according to claim 1, wherein: the guide piece (41) is arranged on the vertical plate (42), and the vertical plate (42) moves reciprocally along the first direction (X) in a matching way through an inclined plane (43) capable of moving reciprocally along the second direction (Y), a second roller (44) and a spring (45) which are arranged on the inclined plane.

3. The cylindrical cell film sleeving machine according to claim 1, wherein: and also comprises

The blanking device (6) is used for pushing the battery cell on the supporting plate (5) out of the supporting plate (5) and comprises a pushing block (61) capable of moving back and forth along the second direction (Y), and the front end surface of the pushing block (61) is conical or arc-shaped; and

a guiding slope (7) matched with the supporting plate (5) and a discharging conveying line (8) matched with the tail end of the guiding slope.

4. The cylindrical cell film sleeving machine according to claim 1, wherein: an adjustment device for aligning the ends of the tubular membrane with the ends of the cells is also included.

5. The cylindrical cell film sleeving method of the cylindrical cell film sleeving machine according to claim 1, wherein the method comprises the following steps of: the method comprises the following steps:

s0, feeding the electric core by the electric core feeding line until the electric core is coaxial with the guide hole of the guide piece;

s1, opening and positioning a film monomer which is pre-opened and then flattened by a tubular film supply machine;

s2, inserting the tips of a group of shrapnel into the inner circle of one end of the tubular membrane;

s3, starting the pushing device to push the battery cell on the battery cell feeding line into the tubular film after passing through the guide piece;

s4, the tips of the group of shrapnel are withdrawn from the tubular membrane.