CN217318184U - Membrane strip preparation device and welding equipment - Google Patents

Abstract

The utility model discloses a membrane strip preparation facilities includes: supply the membrane unit, membrane making mechanism, detection mechanism and the mechanism of rectifying, supply the front end that the membrane unit is located membrane making mechanism, a film used for providing the diaphragm, membrane making mechanism is used for pulling out the diaphragm from supplying the membrane unit and cuts to the membrane strip, detection mechanism is located and supplies the membrane unit and rectifies between the mechanism, a volume that is used for detecting from supplying the diaphragm that the membrane unit extends to membrane making mechanism to control the skew, the mechanism of rectifying is located the tip of membrane making mechanism, and it detects how much of the offset of diaphragm through detection mechanism to rectify the mechanism, the tip of grasping the diaphragm is along the translation of diaphragm width direction, in order to cut the position of cutting of the diaphragm that the mechanism was last and rectify, make the membrane strip edge of cutting out level and smooth, the shape is regular, and is pleasing to the eye. The utility model also provides a battery pack welding equipment, this battery pack welding equipment makes through the mode that a plurality of blades cut simultaneously and cuts efficiently, has promoted battery pack's production efficiency.

Description

Membrane strip preparation device and welding equipment

Technical Field

The utility model relates to a battery technology field especially relates to a membrane strip preparation facilities and welding equipment.

Background

In the preparation process of the battery assembly, gaps among battery strings of the battery assembly or local areas of the battery assembly need to be sealed or isolated between the bus bars and the battery strings by using isolating films, so that lap short circuit among welded lead wires, the battery strings and battery pieces is avoided, and the films are usually cut into slender film strips which are applied to the battery assembly and are bonded with the lead wires.

Among the prior art, adopt artifical counterpoint or will supply the whole translation of membrane book mode adjustment diaphragm skew volume usually, but this mode is not suitable for on big membrane book, and big membrane book size is great, and diaphragm width broad can make the diaphragm of pulling out uneven on keeping away from the cutting station that supplies the membrane end, and still the skew cuts the orbit easily, leads to the membrane strip of cutting irregular, the phenomenon of edge slope.

Disclosure of Invention

In order to solve the technical problem, the utility model provides a membrane strip preparation facilities can cut out many long and thin membrane strips simultaneously with the diaphragm that large-scale confession membrane was rolled up, has improved the efficiency of preparation membrane strip to guaranteed that the membrane strip that cuts is pleasing to the eye, the regular problem of shape, membrane strip preparation facilities include: the film feeding unit is positioned at the front end of the film making mechanism and used for providing a film; the film making mechanism is used for pulling out the film from the film supply unit and cutting the film into film strips; the detection mechanism is positioned between the film supply unit and the deviation correction mechanism and is used for detecting the offset of two sides of the width of the film extending from the film supply unit to the film making mechanism; the mechanism of rectifying is located the rear end of membrane mechanism, the mechanism of rectifying passes through the information that detection mechanism detected can drive the diaphragm tip along diaphragm width direction translation to will cut in the mechanism the position that cuts of diaphragm is rectified, makes the membrane strip edge that cuts level and smooth, and the shape is regular pleasing to the eye.

Optionally, the deviation correcting mechanism comprises a fixed cross beam, a driving part installed on the fixed cross beam, a movable cross beam connected to the driving end of the driving part, and a plurality of clamping assemblies fixed on the movable cross beam, wherein the clamping assemblies are used for clamping the end parts of the diaphragms.

Optionally, offer on the movable cross beam and be used for the via hole that the diaphragm passed, the centre gripping subassembly is including locating the centre gripping cylinder of via hole top is connected the punch holder of centre gripping cylinder power end still be equipped with the lower plate on the movable cross beam of via hole below, the lower plate with the punch holder corresponds the setting, centre gripping cylinder drive the punch holder goes up and down to pressure is in on the lower plate, with will the diaphragm centre gripping is in the punch holder with between the lower plate.

Optionally, the lower clamping plate includes a fixed block and a floating block, a sliding slot is provided on the fixed block, the floating block is slidably mounted in the sliding slot, two ends of the floating block in a sliding direction are respectively connected to the fixed block through a first compression spring, the floating block is restored to a middle position of the sliding slot through the first compression spring, a pressure head is further provided on the floating block, and the pressure head is rotatably connected to the floating block through a bearing;

the upper clamping plate and the lower clamping plate are identical in structure, and the pressing heads in the upper clamping plate and the lower clamping plate (443) are arranged oppositely.

Optionally, the film making mechanism includes a receiving platform, a cutting assembly, a traction assembly and a positioning assembly, the receiving platform is used for receiving the film pulled out from the film supply unit, and a cutter passing hole is formed in the receiving platform; the cutting assembly is positioned below the bearing platform and can pass through the cutter passing hole to perform reciprocating translation along the width direction of the membrane; the positioning assembly is arranged at the front end of the bearing platform and can act with the upper surface of the bearing platform to press the membrane tightly; the traction assembly is arranged at the rear end of the positioning assembly and can pull out the membrane onto the bearing platform.

Optionally, the traction assembly comprises a first translation drive, a lifting drive and a clamping lower die are mounted on the first translation drive, two movable side plates are connected with two ends of the lower clamping die in a sliding way and are positioned at two sides of the bearing platform, the driving end of the lifting drive is connected with the movable side plate to drive the movable side plate to move up and down in a reciprocating manner, the inner sides of the two movable side plates are also provided with an upper clamping die, an adsorption component and a crimping component in parallel, the adsorption component is used for adsorbing the end part of the membrane, the compression joint component is used for pressing the cutting area of the membrane on the surface of the bearing platform, the lifting drive drives the movable side plate to lift, so as to simultaneously drive the clamping upper die, the adsorption component, the compression joint component and the clamping lower die to cooperate to clamp the diaphragm and pull the diaphragm to a cutting position.

Optionally, the cutting assembly further includes a second translation drive and a cutter assembly, the cutter assembly is slidably disposed on the second translation drive, the second translation drive can drive the cutter assembly to translate along a direction perpendicular to the pulling direction of the film, the cutter assembly includes a plurality of blades mounted in parallel, and the blades penetrate through the cutter passing holes to cut the film placed on the supporting platform into a plurality of film strips.

Optionally, the positioning assembly includes a third driving cylinder and an elastic pressing piece connected to the driving end of the third driving cylinder, the elastic pressing piece is sleeved on the driving end of the third driving cylinder, and a second compression spring is connected between the elastic pressing piece and the driving end of the third driving cylinder.

Optionally, supply the membrane unit including supplying the membrane to roll up and store the mechanism, it is used for the buffer memory to store the mechanism supply the membrane to roll up and provide the diaphragm, it includes mounting panel, at least one positioning wheel and swinging arms to store the mechanism, the swinging arms passes through the linking arm and is connected with the mounting panel rotation, makes the swinging arms all the time with the surface of diaphragm offsets.

The utility model provides a pair of membrane strip preparation facilities need roll up from great confession membrane and cuts out a plurality of required membrane strips, and the length of membrane strip equals with the width that the membrane was rolled up to the membrane, accomplishes on line and is applied to battery pack with the supply preparation of membrane strip, and this membrane strip feeding mechanism includes: the film feeding mechanism comprises a film feeding unit, a detection mechanism, a film making mechanism and a deviation rectifying mechanism, wherein the film feeding unit and the deviation rectifying mechanism are respectively positioned at two ends of the film making mechanism, one end of a film on the film feeding unit penetrates through the cutting mechanism to be clamped by the deviation rectifying mechanism, the deviation rectifying mechanism can translate along the pulling direction of the film perpendicular to the film, and the film feeding mechanism detects the amount of deviation of the film relative to a cutting reference position and then translates at one end of the film, so that the film conforms to the cutting reference position.

In the film making mechanism adopted by the application, the film is repeatedly dragged to the cutting position through the traction mechanism, in the whole traction process, the upper clamping die and the lower clamping die in the traction mechanism are matched with the diaphragm to clamp the whole width range of the diaphragm to carry out translation, the phenomenon that the diaphragm is folded and unsmooth at the cutting position in the traction process caused by small clamping area and uneven clamping position is prevented, the adsorption component is further arranged at the rear end of the upper clamping die, the adsorption component adsorbs the end hung out of the diaphragm when the diaphragm is dragged to move to the cutting position by the traction mechanism, the end hung out of the diaphragm is prevented from drooping and rubbing the cutting surface of the cutting mechanism, the upper clamping die presses the diaphragm on the lower clamping die, one end of the diaphragm is translationally driven to the cutting position of the cutting mechanism through the translation mechanism, and the problems that the film strips are irregularly cut due to deviation and folding in the cutting process are effectively solved, The problem of unattractive appearance.

This application compares the cut-out membrane mechanism of the sword cutting among the prior art, has still used multirow blade to arrange side by side and has removed the opposite side that cuts the diaphragm from one side of diaphragm width, cuts out the membrane strip of many rules in step, and the effectual cutting efficiency who improves the membrane strip when guaranteeing the membrane strip and cut the quality.

Additionally, the utility model provides a battery pack welding equipment contains foretell arbitrary membrane strip preparation facilities, and battery pack welding equipment is used for preparation and welding battery pack, because the mode that cuts of membrane strip preparation facilities cuts out a plurality of membrane strips for the width as the length synchronization of membrane strip with the diaphragm, consequently contrast prior art's the mode that cuts, this battery pack welding equipment's production efficiency is higher, has still guaranteed that the shape that the membrane strip cut is regular, pleasing to the eye simultaneously.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a front view of a membrane strip manufacturing apparatus for a battery cell according to the present invention;

FIG. 2 is a schematic structural view of a deviation correcting mechanism of the present invention;

FIG. 3 is a schematic view of the clamping assembly of FIG. 2;

FIG. 4 is a schematic view of the lower plate of FIG. 3;

FIG. 5 is a schematic view of the cutting assembly shown in FIG. 1;

FIG. 6 is a schematic view of the draft assembly of FIG. 1;

FIG. 7 is a schematic structural view of the positioning mechanism of FIG. 1;

FIG. 8 is a schematic view of the cutting assembly shown in FIG. 7;

FIG. 9 is a schematic view of a film supply unit shown in FIG. 1;

wherein the reference numbers are:

10. a film supply unit; 11. supplying a film roll; 12. a storage mechanism; 121. positioning wheels; 122. a swinging wheel; 123. mounting a plate; 124. a bearing; 125. a connecting arm; 20. a film making mechanism; 21. a receiving platform; 22. cutting the assembly; 221. a second translation drive; 222. a cutter assembly; 2221. a blade 2221; 23. a traction assembly; 231. a first translation drive; 232. lifting and driving; 233. clamping the upper die; 234. clamping the lower die; 235. moving the side plate; 236. an adsorption component; 2361. a first driving cylinder; 2362. a first connecting plate; 237. a crimping assembly; 2371. a second driving cylinder; 2372. a second connecting plate; 24. a positioning mechanism; 241. a third driving cylinder; 242. an elastic pressing member; 243. a second compression spring; 30. a detection mechanism; 40. a deviation rectifying mechanism; 41. moving the beam; 42. fixing the cross beam; 43. a drive section; 44. a clamping assembly; 441. a clamping cylinder; 442. an upper splint; 443. a lower splint; 4431. a fixed block; 4432. a slider; 4433. a pressure head; 4434. a first compression spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.

The application provides a membrane strip preparation device, as shown in fig. 1, a large membrane roll feeding mode is adopted to cut a membrane into a plurality of membrane strips for a battery assembly, the membrane strip preparation device comprises a membrane supply unit 10, a detection mechanism 30, a membrane making mechanism 20 and a deviation rectifying mechanism 40, and the membrane supply unit 10 is located at the front end of the membrane making mechanism 20 and is used for providing membranes; the film making mechanism 20 is used for pulling out a film from the film supplying unit 10 and cutting the film into film strips, the detection mechanism 30 is located between the film supplying unit 10 and the deviation correcting mechanism 40 and used for detecting the deviation of the film extending from the film supplying unit 10 to the film making mechanism 20 on two sides of the width of the film, the deviation correcting mechanism 40 is located at the rear end of the film making mechanism 20, the deviation correcting mechanism 40 clamps the end of the film to translate along the width direction of the film through the size of the deviation of the film detected by the detection mechanism 30, so that the film paved on the film making mechanism 20 is paved flatly and just opposite to the cutting position of the film making mechanism 20, the edges of the cut film strips are not inclined, and the shape is regular and attractive.

As shown in fig. 2 to 4, the deviation correcting mechanism 40 includes a fixed beam 42, a driving portion 43 installed on the fixed beam 42, a movable beam 41 connected to a driving end of the driving portion 43, and a plurality of clamping assemblies 44 fixed on the movable beam 41, wherein the movable beam 41 is horizontally and slidably connected to the fixed beam 42, the driving portion 43 and two ends of the movable beam 41 are driven by a lead screw motor, an air cylinder guide rail or a motor synchronous belt, and a through hole for a membrane to pass through is formed in the movable beam 41; the clamp assembly 44 includes: a clamping cylinder 441 disposed above the via hole, and an upper clamp 442 connected to a power end of the clamping cylinder 441, wherein a lower clamp 443 is further disposed on the movable cross beam 41 below the via hole, the lower clamp 443 is disposed to correspond to the upper clamp 442, and the clamping driving portion 43 drives the upper clamp 442 to move downward and applies pressure to the lower clamp 443, thereby clamping one end of the diaphragm between the upper clamp 442 and the lower clamp 443. The lower clamping plate 443 comprises a fixed block 4431 and a floating block 4432, a sliding groove is formed in the fixed block 4431, the floating block 4432 is slidably mounted in the sliding groove, two ends of the floating block 4432 in the sliding direction are respectively connected with the fixed block 4431 through first compression springs 4434, a pressure head 4433 is further arranged on the floating block 4432, the pressure head 4433 is rotatably connected with the floating block 4432 through a bearing, the upper clamping plate 442 and the lower clamping plate 443 are in the same structure, the upper clamping plate 442 and the pressure head 4433 in the lower clamping plate 443 are oppositely arranged, the two sides of the floating block 4432 are connected with the fixed block 4431 through the first compression springs 4434, and the floating block 4432 is restored to the middle position of the sliding groove through the compression springs.

The aforementioned deviation correcting mechanism 40 operates the clamping cylinder 441 to clamp the front end of the film each time the film is manually threaded, after the detection mechanism 30 feeds back the deviation amount of the film to the deviation correcting mechanism 40, the driving portion 43 of the deviation correcting mechanism 40 operates to move the moving beam 41 in the opposite direction of the deviation of the film as a whole, since the clamping assembly 44 has a certain distance from the film supplying end and the moving beam 41 moves in the direction perpendicular to the pulling direction of the film, the film at the end of the clamping assembly 44 and the film at the film supplying end have a change in the included angle, and the pressure head 4433 on the upper clamping plate 442 and the lower clamping plate 443 for clamping the film need to be compatible with the length of the film at the end of the clamping assembly 44 along with the position change of the moving beam 41, so that the film clamped by the clamping assembly 44 does not move freely along with the position movement of the moving beam 41, and the film at the film supplying end and the clamping end always keeps flat. When the movable beam 41 moves, the sliders 4432 on the upper clamping plate 442 and the lower clamping plate 443 can adapt to the inclination of the film sheets and slide in the sliding grooves, and meanwhile, the pressure heads 4433 in the upper clamping plate 442 and the lower clamping plate 443 can rotate around the center of the bearing 124 along with the change of the included angle between the film feeding end and the film clamping end, so that the length and the angle of the film sheets between the deviation correcting mechanism 40 and the film feeding mechanism are compatible, and in the deviation correcting process of the deviation correcting mechanism 40, the film sheets on the cutting assembly 22 are always flatly laid on the cutting plane, and the shape of the cut film strips is ensured to be regular and flat.

In this embodiment, it is preferable that at least 3 clamping assemblies 44 are arranged on the movable beam 41, the clamping assemblies 44 are distributed more densely, the larger the clamping area of the membrane is, the less likely the membrane is to wrinkle during traction and laying, and the flatter the edge of the cut membrane strip is.

Referring to fig. 1, a film forming mechanism 20 in the present application includes a receiving platform 21, a drawing assembly 23, a cutting assembly 22, and a positioning assembly 24 connected to the receiving platform 21, the receiving platform 21 is used for receiving a front end of a film pulled out from a film supply unit 10 by the drawing assembly 23, the drawing assembly 23 can clamp an end face of the film and reciprocate above the receiving platform 21 along a pulling direction of the film, the cutting assembly 22 is located below the receiving platform 21, the cutting assembly 22 can reciprocate along a direction perpendicular to the pulling direction of the film to cut the film pulled to a cutting station on the cutting assembly 22 by the drawing assembly 23 into a plurality of film strips, the positioning assembly 24 is disposed between the film supply unit 10 and the drawing assembly 23 and fixed on the receiving platform 21, the film passes through between the positioning assembly 24 and the receiving platform 21, and the positioning assembly 24 acts on an upper surface of the receiving platform 21 by pressing the film, in order to press one end of the membrane tightly before the membrane is pulled to be supplied with a certain length to the membrane supplying unit 10 in a translational mode to the cutting station after the membrane is cut by the cutting assembly 22 every time, the membrane is prevented from being released in a translational mode to the membrane supplying unit 10 by the pulling assembly 23, one end of the membrane on the bearing platform 21 is not controlled and is in a free relaxation state, the membrane is positioned by the positioning assembly 24 and the pulling assembly 23 in a matched mode, the position of one end of the membrane can be grabbed continuously and accurately by the pulling assembly 23, and cutting is accurate.

The cutting assembly 22 comprises a second translation drive 221 and a cutter assembly 222, the cutter assembly 222 is slidably disposed on the second translation drive 221, and the second drive can drive the cutter assembly 222 to translate along a direction perpendicular to the drawing direction of the film, the cutter assembly 222 comprises a plurality of blades 2221 mounted in parallel, the distance between adjacent blades 2221 is the width of the cut film, and correspondingly, a blade passing hole for the blade 2221 to pass through is formed in the receiving platform 21, the blade 2221 passes through the blade passing hole to enable the blade edge of the blade 2221 to exceed the upper surface of the receiving platform 21, and translates from one side of the receiving platform 21 to the other side of the receiving platform 21 so as to synchronously cut the film placed on the receiving platform 21 into a plurality of film strips, and the arrangement number of the blades 2221 can be set according to the required number of the film strips, so as to improve the efficiency of film preparation.

In this embodiment, the blade 2221 is preferably a circular hob which rotates actively, and the blade 2221 is driven by the motor to rotate simultaneously, so that the film sheet is cut faster and the cut edge is relatively flat under high-speed rotation, but the blade 2221 may also be a fixed blade 2221 with any shape, as long as the film sheet can be cut into sections in the width direction in this embodiment.

Specifically, as shown in fig. 5, the traction assembly 23 includes a first translation drive 231, a lifting drive 232 and a clamping lower mold 234 are installed on the first translation mechanism, two movable side plates 235 are slidably connected to two ends of the clamping lower mold 234, the movable side plates 235 are located on two sides of the receiving platform 21, and a driving end of the lifting drive 232 is connected to the two movable side plates 235 so as to drive the side plates to reciprocate up and down. The clamping upper die 233, the adsorption component 236 and the crimping component 237 are sequentially and horizontally arranged on the inner sides of the two movable side plates 235 from left to right, the clamping upper die 233, the adsorption component 236 and the crimping component 237 both span the upper side of the receiving platform 21 and are fixedly connected with the movable side plates 235 on the two sides of the receiving platform 21, the clamping upper die 233 drives the movable side plates 235 to lift under the action of the lifting drive 232 so as to drive the clamping upper die 233 to lift, the clamping upper die 233 and the clamping lower die 234 are matched to clamp a membrane, and the crimping component 237 presses the membrane onto the upper surface of the receiving platform 21 when the membrane is cut by the cutting component 22.

The adsorption component 236 comprises a first driving cylinder 2361 fixed on the inner sides of the two moving side plates 235 and a first connecting plate 2362 connected with the moving end of the first driving cylinder 2361, a plurality of suckers are arranged on the first connecting plate 2362, the crimping component 237 comprises a second driving cylinder 2371 and a second connecting plate 2372 connected with the moving end of the second driving cylinder 2371, an avoiding groove for the blade 2221 to pass through is arranged below the second connecting plate 2372, the first driving cylinder 2361 drives the first connecting plate 2362 to move up and down, the end of the membrane between the clamping upper die 233 and the crimping component 237 is adsorbed, when the membrane is pulled by the pulling component 23 to move to the cutting position, the adsorption component 236 adsorbs the end of the membrane suspended out, the end of the membrane suspended out is prevented from dropping and rubbing against the cutting surface of the cutting component 22, the clamping upper die 233 presses the membrane on the clamping lower die 234, and drives one end of the membrane to the cutting position of the cutting component 22 by the translation mechanism, the problem that the film strip is irregular and unattractive in cutting due to deviation and wrinkles in the cutting process is effectively solved.

Referring to fig. 7 and 8, the positioning assembly 24 in this embodiment includes a third driving cylinder 241 and an elastic pressing member 242 connected to the driving end of the third driving cylinder 241, the elastic pressing member 242 is sleeved on the driving end of the third driving cylinder 241, and a second compression spring 243 is disposed between the elastic pressing member 242 and the driving end of the third driving cylinder 241, the holding upper die 233 in this embodiment may also include the above-mentioned elastic pressing member 242, and the elastic pressing member 242 may be uniformly disposed on the holding upper die 233, so that the holding upper die 233 elastically presses the membrane onto the holding lower die 234 at multiple positions at the same time.

As shown in fig. 9, the film supply unit 10 includes a film supply roll 11 and a storage mechanism 12, the film supply roll 11 is used for supplying a film sheet, the storage mechanism 12 is used for changing the length of the film sheet required for each cutting, the storage mechanism 12 includes at least one positioning wheel 121 and a swinging wheel 122, the swinging wheel 122 is connected with a bearing 124 of a mounting plate 123 through a connecting arm 125, the film sheet passes through the lower part of the swinging wheel 122, the swinging wheel 122 always abuts against the film sheet through self-weight, when the film sheet receives an instant pulling force, the swinging wheel 122 can freely swing around the center of the bearing 124 under the tension change of the film sheet, and the single swinging film sheet retraction amount is the film sheet length which is pulled by the pulling assembly 23 at a single time, that is the total width of cutting a plurality of film strips at a time.

In the present embodiment, the film supply unit may also be referred to as only a film supply roll, and only the film sheet needs to be supplied to the cutting mechanism 20, and should not be limited to the structure of the film supply unit 10 in the above-described embodiment.

The working principle is as follows: when one end of the membrane sequentially passes through the storage mechanism 12, the positioning group, the clamping upper die 233 and the clamping lower die 234 by a worker, the deviation correcting mechanism 40 is controlled to clamp the end part of the membrane, the detection mechanism 30 detects the positions of the two sides of the width of the membrane, the deviation between the two sides of the membrane and the reference position is judged, the deviation correcting mechanism 40 is matched to translate one end of the membrane to a position which is consistent with the reference position, the traction assembly 23 moves the crimping assembly 237 to the upper part of the cutting assembly 22, the membrane is pressed on the surface of the bearing platform 21 through the crimping assembly 237, the cutting assembly 22 cuts the membrane, the membrane with irregular starting end between the cutting assembly 22 and the deviation correcting mechanism 40 is also cut while cutting a plurality of membrane strips, after the cutting is finished, the positioning assembly 24 acts to press the membrane on the bearing platform 21, and then the traction assembly 23 moves to the membrane supply unit 10, the lifting cylinder in the traction assembly 23 and the adsorption assembly 236 fixed on the movable side plate 235 act simultaneously, the membrane is clamped by the clamping upper die 233, the front end of the membrane is adsorbed and lifted by the adsorption assembly 236, then the membrane is lifted and released by the positioning assembly 24, the first translation drive 231 of the traction assembly 23 acts to pull and convey the membrane for a certain distance, the front end of the membrane is transferred to a cutting station on the bearing platform 21, the membrane is pressed by the crimping assembly 237 when the adsorption assembly 236 releases the membrane, and the membrane is cut by the cutting assembly 22, so that the membrane is continuously cut and prepared by the cyclic action.

The utility model also provides a battery pack welding equipment contains foretell arbitrary membrane strip preparation facilities in this battery pack welding equipment, provides the membrane strip that satisfies demand shape and size for battery pack's welding.

It should be noted that, as is obvious to a person skilled in the art, the invention is not limited to details of the above-described exemplary embodiments, but can be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.

The utility model discloses a concrete example is applied to explain the principle and the implementation mode of the utility model, and the explanation of the above example is only used to help understand the method and the core idea of the utility model; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the concrete implementation and the application scope. In summary, the content of the present specification should not be construed as a limitation of the present invention.

Claims (10)

1. The film strip preparation device is characterized by comprising a film supply unit (10), a film preparation mechanism (20), a detection mechanism (30) and a deviation correction mechanism (40), wherein the film supply unit (10) is positioned at the front end of the film preparation mechanism (20) and used for providing a film; the film making mechanism (20) is used for pulling out the film from the film supply unit (10) and cutting the film into film strips; the detection mechanism (30) is positioned between the film supply unit (10) and the deviation correction mechanism (40) and is used for detecting the offset of two sides of the width of the film extending from the film supply unit (10) to the film making mechanism (20); the deviation rectifying mechanism (40) is located at the rear end of the film manufacturing mechanism (20), and the deviation rectifying mechanism (40) can drive the end portion of the film to translate along the width direction of the film through information detected by the detection mechanism (30).

2. The membrane strip preparation device according to claim 1, wherein the deviation correcting mechanism (40) comprises a fixed cross beam (42), a driving part (43) mounted on the fixed cross beam (42), a moving cross beam (41) connected to the driving end of the driving part (43), and a plurality of clamping assemblies (44) fixed on the moving cross beam (41), wherein the clamping assemblies (44) are used for clamping the ends of the membranes.

3. The apparatus for preparing a membrane strip according to claim 2, wherein a through hole for passing the membrane is opened on the moving beam (41), and the clamping assembly (44) comprises: the clamping cylinder (441) is arranged above the through hole, the upper clamping plate (442) is connected to the power end of the clamping cylinder (441), a lower clamping plate (443) is further arranged on the moving beam (41) below the through hole, the lower clamping plate (443) and the upper clamping plate (442) are arranged correspondingly, the clamping cylinder (441) drives the upper clamping plate (442) to ascend and descend, and pressure acts on the lower clamping plate (443) so as to clamp the diaphragm between the upper clamping plate (442) and the lower clamping plate (443).

4. The film strip manufacturing apparatus according to claim 3, wherein the lower clamping plate (443) includes a fixed block (4431) and a slider (4432), a sliding groove is formed in the fixed block (4431), the slider (4432) is slidably mounted in the sliding groove, two ends of the slider (4432) in the sliding direction are respectively connected to the fixed block (4431) through a first compression spring (4434), a pressing head (4433) is further arranged on the slider (4432), and the pressing head (4433) is rotatably connected to the slider (4432) through a bearing;

the upper clamping plate (442) and the lower clamping plate (443) are identical in structure, and the upper clamping plate (442) and the pressing head (4433) in the lower clamping plate (443) are arranged opposite to each other.

5. The film strip preparation device according to claim 1, wherein the film making mechanism (20) comprises a receiving platform (21), a cutting assembly (22), a traction assembly (23) and a positioning assembly (24), the receiving platform (21) is used for receiving the film sheet pulled out from the film supply unit (10), and a cutter passing hole is formed in the receiving platform (21); the cutting assembly (22) is positioned below the bearing platform (21), and the cutting assembly (22) can pass through the cutter passing hole to perform reciprocating translation along the width direction of the membrane; the positioning assembly (24) is arranged at the front end of the bearing platform (21) and can act with the upper surface of the bearing platform (21) to press the membrane; the traction assembly (23) is arranged at the rear end of the positioning assembly (24) and can pull out the membrane onto the bearing platform (21).

6. The film strip preparation device according to claim 5, wherein the traction assembly (23) comprises a first translation drive (231), a lifting drive (232) and a clamping lower die (234) are installed on the first translation drive (231), two moving side plates (235) are slidably connected to two ends of the clamping lower die (234), the moving side plates (235) are located on two sides of the receiving platform (21), a driving end of the lifting drive (232) is connected with the moving side plates (235) to drive the moving side plates (235) to reciprocate up and down, a clamping upper die (233), an adsorption assembly (236) and a crimping assembly (237) are further installed inside the two moving side plates (235) in parallel, the adsorption assembly (236) is used for adsorbing the end of the film strip, and the crimping assembly (237) is used for pressing the cutting area of the film strip on the surface of the receiving platform (21), the lifting drive (232) drives the movable side plate (235) to lift so as to drive the clamping upper die (233), the adsorption component (236), the compression joint component (237) and the clamping lower die (234) to clamp the diaphragm in a matching manner and pull the diaphragm to a cutting position.

7. The film strip preparation apparatus according to claim 5, wherein the cutting assembly (22) further comprises a second translation drive (221) and a cutter assembly (222), the cutter assembly (222) is slidably disposed on the second translation drive (221), the second translation drive (221) can drive the cutter assembly (222) to translate along a direction perpendicular to the pulling direction of the film strip, the cutter assembly (222) comprises a plurality of blades (2221) mounted side by side, and the blades (2221) pass through the cutter passing holes to cut the film strip placed on the receiving platform (21) into a plurality of film strips.

8. The membrane strip preparing device according to claim 5, wherein the positioning assembly (24) comprises a third driving cylinder (241) and an elastic pressing piece (242) connected with the driving end of the third driving cylinder (241), the elastic pressing piece (242) is sleeved on the driving end of the third driving cylinder (241), and a second compression spring (243) is connected between the elastic pressing piece (242) and the driving end of the third driving cylinder (241).

9. The film strip preparation apparatus according to claim 1, wherein the film supply unit (10) comprises a film supply roll (11) and a storage mechanism (12), the storage mechanism (12) is used for buffering the film sheets supplied by the film supply roll (11), the storage mechanism (12) comprises a mounting plate (123), at least one positioning wheel (121) and a swinging wheel (122), and the swinging wheel (122) is rotatably connected with the mounting plate (123) through a connecting arm (125) so that the swinging wheel (122) is always abutted against the surface of the film sheets.

10. A welding apparatus comprising the film strip manufacturing apparatus of any one of claims 1 to 9, wherein the film strip manufacturing apparatus provides the cut film strip for welding a battery module by the welding apparatus.

Images