CN210590938U

CN210590938U - Unreeling composite mechanism

Info

Publication number: CN210590938U
Application number: CN201921485286.1U
Authority: CN
Inventors: 许伟; 金孝猛; 焦修鹏; 单建军
Original assignee: Nanjing Libu Machinery Co Ltd
Current assignee: Nanjing Libu Machinery Co Ltd
Priority date: 2019-09-09
Filing date: 2019-09-09
Publication date: 2020-05-22
Anticipated expiration: 2029-09-09

Abstract

The utility model discloses an unreeling compound mechanism, which comprises an unreeling device and a compound device; the unwinding device comprises an unwinding rack, an unwinding driving device, a transmission roller assembly and a plurality of unwinding units, wherein the unwinding units are sequentially arranged at intervals from front to back, a plurality of fixing members for fixing lithium battery diaphragm winding cores are arranged on the unwinding units from top to bottom, and the transmission roller assembly is arranged at the top of the unwinding rack; the composite device comprises a composite rack, a plurality of compression roller sets and a plurality of composite driving devices, the compression roller sets are arranged at intervals from top to bottom, the compression roller sets comprise upper compression rollers and lower compression rollers, the upper compression rollers and the two ends of the lower compression rollers are rotatably arranged on the composite rack, and the composite driving devices comprise upper driving units and lower driving units. The utility model has the advantages that: the utility model provides an unreel the unit level and place, avoid placing the inconvenience that has on unwinding device from top to bottom the lithium cell, also reduced the requirement to whole unwinding device stability simultaneously.

Description

Unreeling composite mechanism

Technical Field

The utility model relates to an unreel compound mechanism.

Background

The lithium battery diaphragm is one of the components of the lithium battery structure, the diaphragm performance determines the interface structure, internal resistance and the like of the battery, and directly influences the capacity, cycle, safety performance and other characteristics of the battery, and the lithium battery diaphragm generally adopts a high-strength thin polyolefin porous membrane.

The production of lithium battery diaphragm mainly draws out multiple holes on it, the equipment includes unreeling device, hole-drawing device and reeling device, etc., the unreeling device is used for unreeling coiled lithium battery diaphragm, the hole-drawing device is used for receiving multiple holes on the lithium battery diaphragm, the reeling device is used for reeling, in which the unreeling device includes at least three fixing pieces (inflatable clamping heads) for fixing lithium battery winding cores, because when the hole-drawing device is used for drawing hole treatment of lithium battery diaphragm, the uppermost layer and lowermost layers of lithium battery diaphragm can be directly drawn and contacted with correspondent drawing rollers, its quality can not reach standard, and can not be discarded, and the fixing pieces in the existent unreeling device are vertically arranged, and it is more difficult to fix the winding core on which the lithium battery diaphragm is wound on the fixing pieces, because the weight of the lithium battery diaphragm on each winding core is greater, the more difficult to fix the lithium battery diaphragm upwards, and the unreeling device with said structure has higher requirement for stability of machine frame, therefore, under general situation, every is put lithium battery diaphragm on the mounting and is four-layer structure, and unwinding device once only unreels twelve layers of lithium battery diaphragm, and only middle ten layers are qualified finally, and its lithium battery diaphragm is only 83% volume can become qualified finished product in fact, has caused the unrestrained rate of lithium battery diaphragm to because once can only produce one deck lithium battery diaphragm, lead to the production efficiency of lithium battery diaphragm comparatively low.

Disclosure of Invention

The utility model aims at providing an unreel combined mechanism solves and is subject to lithium battery diaphragm self weight among the prior art, once unreels the technological limitation that lithium battery diaphragm is small in quantity.

In order to solve the above problems, the utility model adopts the following technical proposal: the unwinding composite mechanism comprises an unwinding device and a composite device; the utility model provides an unwinding device is used for the fixed lithium battery diaphragm roll core of in use to unreel, set composite is used for the laminating of the lithium battery diaphragm that unwinding device unreeled together, the subsequent processing of being convenient for.

The unwinding device comprises an unwinding rack, an unwinding driving device, a transmission roller assembly and a plurality of unwinding units, wherein the unwinding units are sequentially arranged at intervals from front to back, a plurality of fixing members for fixing lithium battery diaphragm winding cores are arranged on the unwinding units from top to bottom, the unwinding driving device is arranged on the unwinding rack and drives the lithium battery diaphragm winding cores fixed by the fixing members to rotate for unwinding, the transmission roller assembly is arranged at the top of the unwinding rack, and lithium battery diaphragms on the unwinding units are conveyed to the composite device by bypassing the transmission roller assembly; the utility model provides a plurality of set up around unreeling the unit, its under the situation that the ascending quantity of direction of height does not increase, the quantity of the diaphragm of multiplicable lithium cell who unreels, driving roller subassembly are used for carrying the diaphragm of lithium cell towards set composite, prevent that the diaphragm of lithium cell from producing each other and interfering.

The composite device comprises a composite rack, a plurality of compression roller groups and a plurality of composite driving devices, wherein the compression roller groups are arranged at intervals from top to bottom, each compression roller group comprises an upper compression roller and a lower compression roller, the two ends of each of the upper compression roller and the lower compression roller are rotatably arranged on the composite rack, each composite driving device comprises an upper driving unit and a lower driving unit, the upper driving unit drives the upper compression roller to rotate, the lower driving unit drives the lower compression roller to rotate, the rotating directions of the upper compression roller and the lower compression roller are opposite, and lithium battery diaphragms uncoiled by more than two uncoiling units pass through between the two compression rollers of one compression roller unit and are superposed and attached up and down; the utility model provides a compression roller group comprises two upper and lower compression rollers, and when multilayer lithium battery diaphragm passed through the compression roller and down between the compression roller, multilayer lithium battery diaphragm laminated mutually, the subsequent processing of the lithium cell of being convenient for.

The utility model discloses owing to unreel the unit around setting, the accessible increases the quantity that unreels the unit increases the lithium battery diaphragm that the unwinding device can unreel, solved among the prior art only through upwards increasing lithium battery diaphragm roll core can reach once unreel that multilayer lithium battery diaphragm leads to unreel the frame pressure increase and because lithium battery diaphragm self weight is great and be difficult to place lithium battery diaphragm self weight the technical defect in unreeling the frame, the utility model discloses once can produce more qualified lithium battery diaphragm, improve lithium battery diaphragm's production efficiency.

As a further improvement, the number of unreeling the unit is three, and it is first to unreel the unit, the second unreels the unit and the third unreels the unit respectively, and wherein the third unreels the unit and is located one side near set composite, and the second unreels the unit and is located the third and unreel the unit and the second unreel between the unit, and every quantity of unreeling the unit and goes up the mounting unit and lower fixed unit is two, is respectively, unreels drive arrangement and installs and be used for driving the mounting rotation in unreeling the frame. The utility model discloses in unreel unit quantity and be three, every unreels the fixed two rolling cores that have lithium battery diaphragm of unit, consequently the utility model discloses once can unreel twenty-four layers lithium battery diaphragm, final treatment's lithium battery diaphragm removes follow-up drawing hole in-process the superiors and lower floor and draw roller direct contact's two-layer, the utility model discloses once can obtain twenty-two layers of qualified lithium battery diaphragm, compare in prior art and once can only obtain ten layers of qualified lithium battery diaphragm, the utility model provides high lithium battery diaphragm's production efficiency.

As the utility model discloses a further improvement goes up fixed unit and is the same with fixed unit structure down, goes up fixed unit and includes two physiosis dopes, and two physiosis dopes all rotate with unreeling the frame to be connected, and two physiosis dopes are located same water flat line for centre gripping lithium battery diaphragm rolls up the core, and one of them physiosis dopes is connected with unreeling drive arrangement and unreels the frame by unreeling the drive arrangement drive relatively and rotate. The utility model discloses an physiosis dop makes things convenient for the rolling to have the fixed of the book core of lithium battery diaphragm.

As the utility model discloses a further improvement, compression roller set's quantity is three, compression roller set includes parallel arrangement's last compression roller and lower compression roller, compound drive arrangement includes drive unit and lower drive unit, goes up drive unit and drives respectively with lower drive unit and goes up the compression roller and rotate with lower compression roller to the rotation opposite direction of going up compression roller and lower compression roller, multilayer lithium cell diaphragm passes through and is carried towards the direction of keeping away from unwinding device by last compression roller and lower compression roller rotation between last compression roller from last compression roller and lower compression roller. The utility model discloses the quantity of well compression roller group is three, and every unreels the multilayer lithium battery diaphragm in the unit and passes through a compression roller group, laminates into the structure similar to the one deck, and convenient final whole lithium battery diaphragm laminates mutually.

As the utility model discloses a further improvement, compression roller set still includes two compression roller drive arrangement and two slides, and the slide is installed in compound frame and constitute the vertical migration pair with compound frame, goes up the both ends of compression roller and rotates with two slides respectively and be connected, goes up drive unit and installs on one of them slide, and two compression roller drive arrangement all install and are used for driving two slides respectively in compound frame and slide from top to bottom in step. The utility model discloses set up two compression roller drive arrangement to the compression roller reciprocates in the drive, and the distance between compression roller and lower compression roller is gone up in the adjustment, and compression roller and lower compression roller make the laminating of lithium battery diaphragm between the two better to the pressure through lithium battery diaphragm between the two in the adjustment from this.

As the utility model discloses a further improvement, compression roller drive arrangement is the cylinder, and the cylinder body of cylinder is installed in compound frame, and the piston rod and the slide of cylinder are connected, and the flexible drive slide of piston rod of cylinder, go up the compression roller and go up drive unit and reciprocate. The piston rod of the cylinder is adopted to stretch and drive the upper compression roller to move, the cylinder is convenient to install, and the piston rod is easy to stretch and control.

As the utility model discloses a further improvement still includes the tight roller set that expands, and the quantity of the tight roller set that expands equals with the quantity of compression roller group, and the tight roller set that expands includes the tight roller unit that expands and the tight roller unit that expands down, and the both ends of going up the tight roller unit that expands and the tight roller unit that expands down all are rotated with compound frame and are connected, and wherein go up the tight roller unit that expands and be close to the compression roller setting, and the tight roller unit that expands down is close to down the compression roller setting. The utility model discloses set up the tight roller set that expands, ensure that lithium cell diaphragm is in the state that stretches tight in the conveying.

As a further improvement, the upper expanding roller unit can slide vertically relative to the composite frame, and the lower expanding roller unit can slide horizontally relative to the composite frame. The utility model discloses in be used for adjusting the tensioning degree of lithium cell diaphragm through last tight roller unit that expands and the relative slip of the tight roller unit of lower bloated and compound frame.

As the utility model discloses a further improvement, set composite still keeps away from the output roller group who unreels one side of frame including setting up in compound frame, and the output roller group is located the lower part of compound frame, and it includes the many output roller units that set up from the interval under the upper surface, and the both ends of output roller unit are rotated with compound frame and are connected. The utility model discloses set up output roller set, the output of the lithium cell diaphragm of being convenient for because output roller set all is located the lower part of compound frame, the laminating in the follow-up lithium cell of being convenient for is in.

As a further improvement, the set composite still includes the input roller set, and the input roller set sets up the one side that is close to the frame that unreels in the frame composite, and the input roller set includes that quantity unreels the two input roller units of unit quantity, and the lithium cell diaphragm that unreels the unit successively bypasses the input roller unit and the tight roller unit that expands to through the compression roller set, export from the set composite behind the output roller set. The utility model discloses set up the input roller set, the lithium cell diaphragm of being convenient for is in unwinding device and gathering the linking between the rolling device.

To sum up, the beneficial effects of the utility model are that: the utility model provides an unreel the unit level and place, avoid placing the inconvenience that has on unwinding device from top to bottom the lithium cell, also reduced the requirement to whole unwinding device stability simultaneously.

Drawings

Fig. 1 is a schematic diagram of the structure of the present embodiment and the new embodiment.

Wherein: 1. an unreeling rack; 2. an unwinding driving device; 3. a drive roll assembly; 4. an unwinding unit; 5. a fixing member; 6. a composite frame; 7. a compression roller set; 8. a compound drive device; 9. an upper compression roller; 10. a lower pressing roller; 11. an upper drive unit; 12. a lower driving unit; 13. a first unwinding unit; 14. a second unwinding unit; 15. a third unwinding unit; 16. a press roller driving device; 17. a slide plate; 18. an upper expanding roller unit; 19. a lower expanding roller unit; 20. an output roller unit; 21. an input roller unit; 22. a first drive roller set unit; 23. a second drive roller group unit; 24. a third drive roller group unit; 25. and a fourth drive roller group unit.

Detailed Description

The following description will further describe embodiments of the present invention with reference to the accompanying drawings. The utility model discloses decide to hand in unwinding device place one side be the place ahead, and one side at set composite set place is the rear, and the left side in fig. 1 promptly is the place ahead, and the right side is the rear, also is that the lithium cell diaphragm is carried forward after by, and the inside direction of perpendicular to paper is right-hand in the figure 1 of deciding to hand in the perpendicular to paper, and the outside direction definition of perpendicular to paper is the left. The lamination described in the application is only the stacking of lithium battery separators, and two adjacent lithium battery separators are not adhered to each other, and are not fused into one layer. The utility model provides a lithium battery diaphragm indicates the blank membrane before processing.

The unwinding compound mechanism shown in fig. 1 comprises an unwinding device and a compound device, wherein the unwinding device is arranged behind the compound device.

The unreeling device comprises an unreeling rack 1, an unreeling driving device 2, a driving roller assembly 3 and a plurality of unreeling units 4, wherein the unreeling units 4 are sequentially arranged on the unreeling rack 1 at intervals from front to back, a plurality of fixing pieces 5 for fixing lithium battery diaphragm roll cores are arranged on the unreeling units 4 at equal intervals from top to bottom, the unreeling driving device 2 is arranged on the unreeling rack 1 and drives the lithium battery diaphragm roll cores fixed by the fixing pieces 5 to rotate for unreeling, the driving roller assembly 3 is arranged at the top of the unreeling rack 1, and lithium battery diaphragms on the unreeling units 4 are conveyed to a compound device by bypassing the driving roller assembly 3; the utility model discloses the preferred quantity of unreeling unit 4 is three, it is first to unreel unit 13 respectively, the second unreels unit 14 and the third unreels unit 15, wherein the third unreels unit 15 and is located the one side that is close to set composite, the third unreels unit 15 promptly and is located the forefront, the second unreels unit 14 and is located the third and unreels unit 15 and the second unreels between unit 14, and the third unreels unit 15 and first unreels unit 13 and the second and unreel the distance of unit 14 and equal, every unreels the quantity of mounting 5 on unit 4 and is two, fixed unit and lower fixed unit are gone up respectively, it installs and is used for driving mounting 5 to rotate to unreel drive arrangement 2 in unreeling frame 1.

The utility model discloses an unreeling unit 4 includes a left unreeling unit support plate, a right unreeling unit support plate and a plurality of unreeling unit connecting rods, the number of the unreeling unit connecting rods in the utility model is four, the unreeling unit support plate is a rectangular plate, two ends of the four unreeling unit connecting rods are respectively fixedly connected with four right angles of the left unreeling unit support plate and the right unreeling unit support plate (such as welding, etc.), wherein the left unreeling unit support plate and the right unreeling unit support plate are arranged on the unreeling frame 1, if adopting the bolt detachable installation, the upper fixing unit and the lower fixing unit in the utility model have the same structure, the upper fixing unit includes two inflatable chucks which are respectively rotatably arranged on the left unreeling unit support plate and the right unreeling unit support plate, the two inflatable chucks are positioned on the same horizontal line along the left and right directions and are used, the unwinding driving device 2 is installed on the left unwinding unit supporting plate, wherein an inflatable chuck installed on the left unwinding unit supporting plate is connected with the unwinding driving device 2 and is driven by the unwinding driving device 2 to rotate relative to the unwinding rack 1. The utility model provides an unreel 2 preferred adoption of drive arrangement and unreel driving motor, unreel on the unit backup pad on a left side and adopt bolt detachable to install and unreel the speed reducer, unreel driving motor's output shaft and the input shaft that unreels the speed reducer, the output shaft that unreels the speed reducer passes through the belt to be connected with the physiosis dop for the rotation of drive physiosis dop. The utility model discloses well mounting, mounting and the connected mode that unreels frame 1 and unreel driving motor's installation and connected mode are prior art, the utility model discloses do not give detailed description.

The utility model discloses the lower part that unreels frame 1 is located the first unit 13 that unreels, the second unreels the front side of unit 14 and all is provided with one down and turns to the roller, the both ends of turning to the roller down unreel the unit backup pad with a left side respectively and unreel the unit backup pad on the right side and adopt the bearing to rotate and be connected, the lithium battery diaphragm on the lower fixed unit is walked around down to the roller and is upwards driven from the below of turning to the roller down, in order to avoid the lithium battery diaphragm on the fixed unit, the upper portion of unreeling frame 1 is located the first unit 13 that unreels, the second unreels the front side top of unit 14 and respectively is provided with one and turns to the roller on with the rotation connected mode who unreels frame 1 and turns to the roller down the same, it walks around and forwards to walk around the.

The driving roller component 3 in the utility model comprises a first driving roller group unit 22, a second driving roller group unit 23, a third driving roller group unit 24 and a fourth driving roller group unit 25 which are arranged on the top of the unreeling rack 1 from back to front in sequence, and a rear conveying roller which is arranged at the rear end of the unreeling rack 1 and is positioned above the first unreeling unit 13, wherein first drive roller group unit 22 includes two first drive rollers that set up along the left and right directions level from top to bottom, and second drive roller group unit 23 includes three upper and middle and lower second drive rollers, and third drive roller group unit 24 includes three upper and middle and lower second drive rollers, and fourth drive roller group unit 25 includes three upper and middle and lower fourth drive rollers, the utility model discloses in first unreel the unit 13 top unreel the frame 1 go up along controlling the direction rotation and be provided with a first lithium battery diaphragm that unreels of unreeling the mounting of the unit 13 middle and upper side.

The utility model discloses a composite device include composite frame 6, a plurality of compression roller sets 7 and a plurality of composite driving device 8, composite frame 6 in the utility model includes a left composite support plate, a right composite support plate and a plurality of composite connecting rods, the utility model discloses a left composite support plate and a right composite support plate are connected respectively at the both ends of composite connecting rod, upper, middle and lower three rectangular holes running through the left and right sides are opened on the left composite support plate and the right composite mounting plate, a plurality of compression roller sets 7 are arranged at intervals from top to bottom, the utility model discloses the preferred quantity of compression roller sets 7 is three, compression roller sets 7 include upper compression roller 9 and lower compression roller 10, the both ends of upper compression roller 9 and lower compression roller 10 are all arranged on composite frame 6 in a rotating way, composite driving device 8 includes upper driving unit 11 and lower driving unit 12, upper driving unit 11 drives upper compression roller 9 to rotate, lower driving unit 12 drives lower compression roller 10 to rotate, the rotation directions of the upper pressing roller 9 and the lower pressing roller 10 are opposite and the rotation speeds are equal, and lithium battery diaphragms unreeled by more than two unreeling units 4 pass through the upper pressing roller 9 and the lower pressing roller 10 of one pressing roller unit and are superposed and attached up and down.

The utility model discloses well compression roller set 7 still is provided with two compression roller drive arrangement 16 and two slides 17, and slide 17 installs in compound frame 6 and constitute the vertical migration pair with compound frame 6, and the both ends of going up compression roller 9 adopt the bearing to rotate with two slides 17 respectively to be connected, goes up drive unit 11 and installs on one of them slide 17, the utility model provides a slide through install vertical guide rail and install the slider on slide 17 in compound frame 6, the slider cooperatees with vertical guide rail, realizes slide and compound frame 6's relative slip, and two compression roller drive arrangement 16 all install and are used for driving two slides 17 to slide from top to bottom in step respectively in compound frame 6.

The utility model discloses preferred compression roller drive arrangement 16 is the cylinder, and the cylinder body of cylinder adopts bolt detachable to install in compound frame 6, and the piston rod of cylinder vertical setting downwards is and be connected with slide 17, and the flexible drive slide 17 of piston rod of cylinder, install last compression roller 9 and last drive unit 11 on the slide 17 in right compound support board reciprocate. The utility model discloses install the speed reducer on the slide 17 in right compound stay board, the output shaft of going up the speed reducer adopts the coupling joint with last compression roller 9, last drive unit 11 be last driving motor, go up driving motor and adopt bolt detachable to install on last speed reducer and go up driving motor's output shaft and the input shaft of last speed reducer, go up driving motor and rotate, the compression roller 9 rotates in the drive after last speed reducer slows down. The utility model provides an adopt bolt detachable to install down the speed reducer on the right side composite support board, the output shaft of lower speed reducer adopts the shaft coupling with lower compression roller to be connected, lower drive unit 12 be driving motor down, lower driving motor adopts bolt detachable to install on lower speed reducer and driving motor's output shaft and the input shaft of lower speed reducer down, lower driving motor work, the compression roller rotates under the drive after the speed reducer slows down via down, the utility model discloses from left to right, go up compression roller 9 clockwise rotation, compression roller 10 anticlockwise rotates down, goes up compression roller 9 and compression roller 10 and rotates, will be carried forward by the back through the lithium battery diaphragm between the two.

The utility model discloses be provided with the tight roller set that expands between left composite support board, right side composite support board, the quantity of the tight roller set that expands equals with compression roller set 7's quantity, the tight roller set that expands includes the tight roller unit 18 that expands on along the direction setting about with the tight roller unit 19 that expands down, the both ends of going up the tight roller unit 18 that expands and the tight roller unit 19 that expands down all rotate with composite frame 6 and be connected, wherein go up the tight roller unit 18 that expands and be close to last compression roller 9 and set up, the tight roller unit 19 that expands down is close to down compression roller 10 and sets up, for the degree of tightening of adjustment lithium battery diaphragm, the utility model provides an go up the tight roller unit 18 that expands and can compound 6 vertical sliding of frame relatively, the tight roller unit 19 horizontal sliding of frame that expands relatively.

The left composite supporting plate and the right composite supporting plate at two ends of the upper expanding roller unit 18 in the utility model are respectively provided with an upper fixing seat by adopting a detachable bolt, an upper sliding seat is arranged on the upper fixing seat in a sliding way, the upper sliding seat is arranged on the upper fixing seat in a sliding way, an upper screw rod is arranged on the upper fixing seat in a rotating way by adopting a bearing, the upper screw rod is connected with the upper sliding seat through screw threads, the upper hand wheel is arranged at the top of the upper screw rod, the upper slide seat can be driven to relatively fix and slide up and down by rotating the upper hand wheel, the upper slide seat and the upper fixed seat can slide up and down by adopting the way of the guide rail and the slide block, and a dovetail groove can also be formed on the upper slide seat, be provided with on last fixing base and realize the upper and lower slip of upper slide and last fixing base with dovetail matched with arch, the utility model provides an end of last tight roller 18 that expands adopts the bearing to rotate with last slide holder and is connected. The utility model provides a lower tight roller unit 19 that expands's mounting means is the same with the mounting means of last tight roller unit 18 that expands, and the difference lies in its lower sliding seat horizontal migration on lower fixing base, and the lead screw level sets up down.

The utility model provides a set composite still keeps away from the one side of unreeling frame 1 in compound frame 6 and is provided with the output roller group, and the output roller group is located the lower part of compound frame 6, the utility model discloses unreeling frame 1 lower part and installing the output roller group mounting panel, the output roller group includes many output roller units 20 that the interval set up from above-mentioned down, and the both ends of output roller unit 20 adopt the bearing to rotate with the output roller group mounting panel on compound frame 6 to be connected. The utility model provides a preferred being three of output roller unit 20's quantity, the lithium battery diaphragm of three compression roller set 7 output goes up respectively in the middle of in the lower three output roller unit 20's lower part and walks around output roller unit 20 and gets into lower one procedure.

The utility model provides a set composite still is provided with the input roller set, and the input roller set sets up and is close to the one side of unreeling frame 1 in compound frame 6, and the input roller set includes that quantity unreels the two input roller unit 21 of unit 4 quantity, and the lithium battery diaphragm that unreels unit 4 unreels successively bypasses input roller unit 21 and the tight roller unit that expands to through compression roller group 7, export from set composite behind the output roller set. The utility model provides an input roller unit 21 is including two input rollers in front and back, and the both ends of input roller adopt the bearing to rotate with left composite support board and right composite support board respectively and are connected, by the bottom of the earlier input roller of the rear side of bypassing of the lithium cell diaphragm that unreels unit 4 unreels, walk around at the top of an input roller of front side again.

In the utility model, the lithium battery diaphragm is unreeled by a fixing piece positioned above the first unreeling unit 13, namely, the first lithium battery diaphragm is sequentially conveyed from the rear driving roller, the bottom of the first driving roller above, the top of the second driving roller above, the bottom of the third driving roller above and the top of the fourth driving roller above to the lower front, the lithium battery diaphragm unreeled by a fixing piece positioned below in the first unreeling unit 13, namely, the second lithium battery diaphragm sequentially bypasses the front of the second lithium battery diaphragm, namely the front of the second lithium battery diaphragm is conveyed to the lower front side after passing around the front of the second lithium battery diaphragm, namely the bottom of a lower steering roller close to the first unreeling unit 13, the top of an upper steering roller close to the first unreeling unit 13, the bottom of a first driving roller below the second lithium battery diaphragm, the top of a second driving roller in the middle of the second lithium battery diaphragm, the bottom of a third driving roller in the middle of the second lithium battery diaphragm and the top of; the lithium battery diaphragm unreeled by one fixing piece located above in the second unreeling unit 14, namely the third lithium battery diaphragm sequentially bypasses the top of the lowest second driving roller, the bottom of the lowest third driving roller and the top of the lowest fourth driving roller and is conveyed downwards and forwards, and the lithium battery diaphragm unreeled by one fixing piece located below in the second unreeling unit 14, namely the fourth lithium battery diaphragm sequentially bypasses the bottom of a lower steering roller in front of the fourth lithium battery diaphragm, the top of an upper steering roller at the front side of the second unreeling unit, the bottom of an upper steering roller located behind the third unreeling unit and the bottom of an upper steering roller unit located in front of the third unreeling unit and is conveyed downwards and forwards; the lithium battery diaphragm unreeled by the fixing member above the third unreeling unit 15 is a fifth lithium battery diaphragm, and the lithium battery diaphragm unreeled by the fixing member below the third unreeling unit 15 is a sixth lithium battery diaphragm. The utility model provides a lithium battery diaphragm on first lithium battery diaphragm, second lithium battery diaphragm, third lithium battery diaphragm, fourth lithium battery diaphragm, fifth lithium battery diaphragm and the sixth lithium battery diaphragm and every mounting among the prior art is the same, all is the lithium battery diaphragm of laminating mutually by the four layers.

After the first lithium battery diaphragm and the second lithium battery diaphragm respectively bypass the uppermost input roller unit 21 and the second input roller unit 21 from top to bottom, an upper lithium battery diaphragm is formed by pasting the upper pressing roller and the lower pressing roller of the uppermost pressing roller group 7, after the third lithium battery diaphragm and the fourth lithium battery diaphragm respectively bypass the third input roller unit 21 and the fourth input roller unit 21 from top to bottom, after the middle lithium battery diaphragm is formed by mutually pasting the upper pressing roller and the lower pressing roller of the middle pressing roller group 7, the fifth lithium battery diaphragm and the sixth lithium battery diaphragm respectively bypass the fifth input roller unit 21 and the sixth input roller unit 21 from top to bottom, the lower lithium battery diaphragm is formed by mutually pasting the upper compression roller and the lower compression roller of the lowest compression roller group 7, and the upper lithium battery diaphragm, the middle lithium battery diaphragm and the lower lithium battery diaphragm respectively bypass the bottoms of the upper, middle and lower three output roller units 20 and are conveyed out to enter the next processing procedure.

This reality and novel once unreel twenty-four layers lithium battery diaphragm, detach the one deck of first lithium battery diaphragm top and the one deck of sixth lithium battery diaphragm below, twenty-two layers lithium battery diaphragm in the middle of wherein is qualified product, the utility model discloses have and exceed 91.5% lithium battery diaphragm and become qualified product, compare in prior art 83% yield, the utility model discloses reduced the volume of extravagant lithium battery diaphragm, compared in prior art and obtain ten layers of qualified lithium battery diaphragms at every turn, the utility model discloses once can obtain twenty-two layers of qualified lithium battery diaphragms, the utility model provides high lithium battery diaphragm's production efficiency.

Parts which are not specifically described in the above description are prior art or can be realized by the prior art. The specific embodiments of the present invention are merely preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. All equivalent changes and modifications made according to the contents of the claims of the present invention should be regarded as technical scope of the present invention.

Claims

1. Unreel combined mechanism, its characterized in that: comprises an unreeling device and a compound device;

the unwinding device comprises an unwinding rack (1), an unwinding driving device (2), a driving roller assembly (3) and a plurality of unwinding units (4), wherein the unwinding units (4) are sequentially arranged at intervals from front to back, a plurality of fixing members (5) for fixing lithium battery diaphragm winding cores are arranged on the unwinding units (4) from top to bottom, the unwinding driving device (2) is arranged on the unwinding rack (1) and drives the lithium battery diaphragm winding cores fixed by the fixing members (5) to rotate for unwinding, the driving roller assembly (3) is arranged at the top of the unwinding rack (1), and lithium battery diaphragms on the unwinding units (4) bypass the driving roller assembly (3) and are conveyed to the compounding device;

the compound device comprises a compound rack (6), a plurality of compression roller sets (7) and a plurality of compound driving devices (8), a plurality of compression roller sets (7) top-down interval sets, compression roller set (7) include compression roller (9) and lower compression roller (10), the both ends of going up compression roller (9) and lower compression roller (10) all rotate and set up on compound rack (6), compound driving device (8) are including drive unit (11) and lower drive unit (12), go up compression roller (9) rotation on drive unit (11) drive, lower drive unit (12) drive lower compression roller (10) rotate, and go up compression roller (9) and the rotation opposite direction of lower compression roller (10), lithium cell membrane that more than two unreel unit (4) unreel passes through between last compression roller (9) and lower compression roller (10) of a compression roller unit, and superpose the laminating from top to bottom.

2. The unwinding compound mechanism of claim 1, wherein: the number of the unreeling units (4) is three, namely a first unreeling unit (13), a second unreeling unit (14) and a third unreeling unit (15), wherein the third unreeling unit (15) is located on one side close to the compounding device, the second unreeling unit (14) is located between the third unreeling unit (15) and the second unreeling unit (14), the number of the fixing pieces (5) on each unreeling unit (4) is two, namely an upper fixing unit and a lower fixing unit, and the unreeling driving device (2) is installed on the unreeling rack (1) and used for driving the fixing pieces (5) to rotate.

3. The unwinding compound mechanism of claim 2, wherein: go up fixed unit and fixed unit structure the same down, go up fixed unit and include two physiosis dopes, two physiosis dopes all rotate with unreeling frame (1) and be connected, and two physiosis dopes are located same water flat line for centre gripping lithium cell diaphragm rolls up the core, and one of them physiosis dopes is connected with unreeling drive arrangement (2) and unreels frame (1) rotation relatively by unreeling drive arrangement (2) drive.

4. The unwinding compound mechanism of claim 3, wherein: the press roller group (7) further comprises two press roller driving devices (16) and two sliding plates (17), the sliding plates (17) are installed on the composite rack (6) and form a vertical moving pair with the composite rack (6), two ends of the upper press roller (9) are respectively in rotating connection with the two sliding plates (17), the upper driving unit (11) is installed on one of the sliding plates (17), and the two press roller driving devices (16) are installed on the composite rack (6) and are respectively used for driving the two sliding plates (17) to synchronously slide up and down.

5. The unwinding compound mechanism of claim 4, wherein: the compression roller driving device (16) is an air cylinder, the cylinder body of the air cylinder is installed on the composite rack (6), the piston rod of the air cylinder is connected with the sliding plate (17), and the piston rod of the air cylinder drives the sliding plate (17), the upper compression roller (9) and the upper driving unit (11) to move up and down in a telescopic mode.

6. The unwinding compound mechanism of claim 5, wherein: still including the tight roller set that expands, the quantity of the tight roller set that expands equals with the quantity of compression roller set (7), the tight roller set that expands includes tight roller unit (18) that expands and tight roller unit (19) that expands down, and the both ends of going up tight roller unit (18) that expands and tight roller unit (19) that expands down all are rotated with compound frame (6) and are connected, and wherein go up tight roller unit (18) that expands and be close to last compression roller (9) and set up, and tight roller unit (19) that expands down is close to down compression roller (10) and sets up.

7. The unwinding compound mechanism of claim 6, wherein: the upper tightening roller unit (18) can vertically slide relative to the composite frame (6), and the lower tightening roller unit (19) can horizontally slide relative to the composite frame (6).

8. The unwinding compound mechanism of claim 7, wherein: the compound device also comprises an output roller group which is arranged on one side of the compound rack (6) far away from the unreeling rack (1), the output roller group is arranged on the lower part of the compound rack (6) and comprises a plurality of output roller units (20) which are arranged from the upper surface to the lower surface at intervals, and the two ends of each output roller unit (20) are rotatably connected with the compound rack (6).

9. The unwinding compound mechanism of claim 8, wherein: the composite device further comprises an input roller set, the input roller set is arranged on one side, close to the unreeling rack (1), of the composite rack (6), the input roller set comprises two input roller units (21) with the quantity being that the unreeling units (4) are two, lithium battery diaphragms unreeled by the unreeling units (4) successively bypass the input roller units (21) and the expansion roller units, and are output from the composite device after passing through the output roller set (7).