A kind of film take-up core and wrap-up
Technical field
Film take-up technology is the utility model is related to, more particularly to a kind of film take-up core and wrap-up.
Background technology
Because film has preferable chemical stability and excellent physical property, film is widely used in secondary lithium
Ion battery, such as:Battery of mobile phone, Notebook Battery, power tool battery and power vehicle battery.
At present, the extensive use with power vehicle in life, lithium ion battery yield start to increase severely, driven lithium from
Sub- battery thin film is expanded production, because the film consumption of single electrokinetic cell is larger, therefore the machinability of film is proposed compared with
High requirement.Although the performance of lithium ion cell film is good and bad to be somewhat dependent on its property of raw material and film production work
The advance of skill, but film is in process of production, how to ensure that properties of product do not reduce particularly during following process
It is one of core technology of lithium ion cell film production.In existing film production flow, film is after the completion of drilling
Location mode, processing mode etc. are the main reason for film product performance reduces, according to incompletely statistics, lithium ion cell film
Can reduce has 80% the reason for be because the mode of follow-up processing and storage is unreasonable.Therefore, the architectural feature of refill is wound
It is one of key technology for influenceing lithium battery film properties of product.But winding refill has certain moisture, directly makes
Wound with currently marketed winding refill, due to reasons such as the weather temperature difference during transport, cause the water for winding refill
Divide the change of content, in turn result in the outside dimension change of winding refill.
Utility model content
The purpose of this utility model is to provide a kind of film take-up core, to solve existing winding refill because containing certain
Moisture and in transportation because the reasons such as the weather temperature difference cause the change of moisture of winding refill in turn result in winding
The technical problem of the outside dimension change of refill;
The purpose of this utility model, which also resides in, provides a kind of film take-up, to solve existing winding refill because containing one
Determine moisture and in transportation because the reasons such as the weather temperature difference cause the change of the moisture of winding refill in turn result in receipts
The technical problem of the outside dimension change of usage core for rolled paper.
In order to solve the above problems, the utility model provides a kind of film take-up core, including a core body, described
Core body is hollow cylindrical structure, wherein:
Some fixing plates for clamping external device (ED) are radially arranged in the side wall of the core body;
A reducing for being used to adjust core body pore size is also opened up in the side wall of the core body and adjusts mouth, works as institute
When stating core body by inside extruding force, the aperture of the core body reduces;When the core body is by outside
During expansionary force, the aperture of the core body becomes big.
According to a kind of film take-up core described in the application preferred embodiment, the reducing regulation mouth is one through described
The opening of the side wall of core body, the opening cause the C-shaped structure in cross section of the core body.
According to a kind of film take-up core described in the application preferred embodiment, the bearing of trend of reducing regulation mouth with
The central axis direction of the core body is parallel.
According to a kind of film take-up core described in the application preferred embodiment, some fixing plates are each along the core sheet
The parallel direction of the central shaft of body is set, and described one end for fixing plate is radially arranged a spacing preiection along the core body
Structure.
According to a kind of film take-up core described in the application preferred embodiment, one end of the spacing preiection structure and institute
The one end for stating core body flushes setting.
According to a kind of film take-up core described in the application preferred embodiment, radially set in the side wall of the core body
Put at least three fixing plates.
The utility model also provides a kind of film take-up, including:One reel and film take-up core, the reel are
Hollow cylindrical structure, the film take-up core are inserted in the reel and stood tightly against in the inwall of the reel.
According to a kind of film take-up described in the application preferred embodiment, internal diameter=core sheet of the reel
The external diameter of the body+height for fixing plate.
According to a kind of film take-up described in the application preferred embodiment, some cards in the film take-up core
Gu plate is stood tightly against in the inwall of the reel so that film take-up core and the reel phase clamping, the spacing preiection knot
Structure is located at outside the reel.
According to a kind of film take-up described in the application preferred embodiment, including two film take-up core, two is thin
Film winding core is plugged in the both ends of the reel respectively.
Compared with prior art, there is following technique effect in the utility model:
The utility model provides a kind of film take-up core and wrap-up, the technical program using reducing volume
Core, the purpose of reducing are to use any climate change and the extruding and expansion in the external world.The utility model is simple in construction, behaviour
Facilitate, be easy to promote.
Brief description of the drawings
Fig. 1 is a kind of structural representation of film take-up core of the utility model;
Fig. 2 is a kind of right view of film take-up core of the utility model;
Fig. 3 is a kind of left view of film take-up core of the utility model;
Fig. 4 is that the utility model fixes plate and the structural representation of spacing preiection structure;
Fig. 5 is a kind of fractionation structural representation of film take-up of the utility model.
1- core, 11- core bodies, 12- reducings regulation mouth, 13- fix plate, 14- spacing preiection structures, 2- reels.
Embodiment
Below in conjunction with accompanying drawing, lift a specific embodiment and described in detail.
Embodiment 1
Fig. 1-4, a kind of film take-up core 1, including a core body 11 are refer to, core body 11 is hollow circle
Column structure, reducing regulation mouth 12 is opened up in the side wall of core body 11, this reducing regulation mouth 12 is through core body 11
One side wall, the cross section of core body 11 is c-type structure, the bearing of trend of reducing regulation mouth 12 and the central shaft of core body 11
Direction is parallel, and when core body 11 is by inside extruding force, the aperture of core body 11 reduces;When core body 11 by
During outside expansionary force, the aperture of core body 11 becomes big.
Some fixing plates 13 are also radially arranged in the side wall of core body 11, some fixing plates 13 are each along core body 11
The parallel direction of central shaft set, some two ends of the two ends accordingly with core body 11 for fixing plates 13 flush.
In the present embodiment, the one end for fixing plate 13 is radially arranged a spacing preiection structure 14 along core body 11.In the present embodiment
In, fix plate 13 and spacing preiection structure 14 is made into integration.
In the present embodiment, in the side wall of core body 11 set at least three fix plates 13, adjacent fixing plate 13 it
Between distance be preset value.The length and the height of core body 11 for fixing plate 13 are consistent;Fix the side of plate 13 and be provided with limit
Position bulge-structure 14 so that fix plate 13 and be of an L-shaped structure with spacing preiection structure 14;Spacing preiection structure 14 is used to prevent core
1 when being inserted in reel, limitation core 1 limits core 1 and plugs depth in reel to reel internal displacement.Preferably, block
Gu plate 13 has 6, in its natural state, the angle between the adjacent fixing plate 13 of each two is 60 degree.
Embodiment 2
Fig. 1-5, a kind of film take-up, including an at least core 1 and reel 2 are refer to, reel 2 is hollow circle
Column structure, core 1 are plugged interior with reel 2 and stood tightly against in the inwall of reel 2:
Core 1 includes a core body 11, and core body 11 is hollow cylindrical structure, in the side wall of core body 11
Reducing regulation mouth 12 is opened up, this reducing regulation mouth 12 runs through a side wall of core body 11;In the side wall of core body 11 also
Some fixing plates 13 are radially arranged, some plates 13 that fix set each along the parallel direction of the central shaft of core body 11, fixed
Plate 13 is stood tightly against in the inwall of reel 2.The one end for fixing plate 13 is radially arranged a spacing preiection knot along core body 11
Structure 14, when core 1 is inserted in reel 2, spacing preiection structure 14 is not inserted in reel 2, but outside reel 2, limit
On the one hand the effect of position bulge-structure 14 is to prevent core 1 to be fully sunk among reel (i.e. position-limiting action), the work of another aspect
With when on reel, due to the presence of the spacing preiection structure 14, can effectively being reduced because film is received by film take-up
The turned-down edge phenomenon that volume thickness is thicker and occurs.
In the present embodiment, the structure of core 1 is identical with the core structure in embodiment 1, therefore this implementation is no longer superfluous
State.
The internal diameter R2 of reel 2 is equal to the external diameter of core body 11 and fixes the height sum of plate 13, i.e., the R1 marked in figure,
The reducing that adjustable aperture is provided with due to core 1 adjusts mouth 12, when core 1 is plugged into reel 2, under squeezing action, and volume
The aperture of core 1 diminishes, so that core 1 is plugged among reel 2, meanwhile, core 1 can produce when being squeezed
Outside tension force so that fix the inwall of the jam-packed reel 2 of plate 13, reach support effect.
In the present embodiment, the both ends of reel 2 plug a core 1 respectively, and the spacing preiection structure 14 of two core 1 is positioned at volume
The outside of cylinder 2, fix plate 13 and stand tightly against in the inwall of reel 2.
Disclosed above is only the specific embodiment of the application, but the application is not limited to this, any this area
Technical staff can think change, should all fall in the protection domain of the application.