Flattening mechanism

Abstract

The utility model discloses a flattening mechanism, which comprises a flattening wheel, the oscillating bar is used for mounting the smoothing wheel; the first pressure assembly is connected with the swing rod and used for driving the smoothing wheel to abut against the rolled product at the set first pressure. The second pressure assembly is connected with the swing rod and used for driving the smoothing wheel to abut against the rolled product at set second pressure. According to the utility model, the requirements of a rolled product on flattening pressure in different states can be met, the rolling flatness is improved, and the problem of edge warping of material edges is reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to lithium battery production technical field, concretely relates to a smoothing mechanism. BACKGROUND

[0002] The production of power lithium battery, slitting and winding and other processes are key process procedures related to battery quality; the quality and yield of the electrode sheet are required to be higher in the production of the equipment, therefore, it is particularly important to ensure the winding quality, so the demand of the electrode sheet for different smoothing pressures should be comprehensively considered in the winding process.

[0003] At present, the rolling and winding in all lithium battery production equipment generally need to be carried out smoothing action of slitting and winding, along with the improvement of the requirement of battery capacity and quality in the industry, along with the complexity of the electrode process, there is still no ideal smoothing and winding scheme in the industry, and the currently used winding and smoothing device is generally in the constant pressure mode, which cannot take into account the demand of the electrode sheet for smoothing pressure in different states. UTILITY MODEL CONTENTS

[0004] In order to solve the problems in the prior art, the utility model provides a smoothing mechanism, which can take into account the demand of the winding product for smoothing pressure in different states, improve the winding flatness and reduce the problem of material edge warping.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme: a smoothing mechanism, comprising: a smoothing wheel; a swing rod for mounting the smoothing wheel; a first pressure assembly connected with the swing rod and used for driving the smoothing wheel to abut on the winding product at a set first pressure; and a second pressure assembly connected with the swing rod and used for driving the smoothing wheel to abut on the winding product at a set second pressure.

[0006] The above technical scheme, through the first pressure assembly for driving the smoothing wheel to abut on the winding product at the set first pressure, the second pressure assembly for driving the smoothing wheel to abut on the winding product at the set second pressure, the first pressure and the second pressure are jointly applied to the winding product, when the winding product is in different states, the second pressure value with different sizes is set, the demand of the winding product for smoothing pressure in different states can be taken into account, the winding flatness is improved, and the problem of material edge warping is reduced.

[0007] Optionally, it further comprises a fixed support, one end of the swing rod is hinged with the smoothing wheel, and the other end of the swing rod is connected with the fixed support through a bearing assembly.

[0008] The above technical scheme, through the hinging of one end of the swing rod with the smoothing wheel and the connecting of the other end of the swing rod with the fixed support through the bearing assembly, the basic installation structure of the smoothing wheel is given, at the same time, through the use of the bearing assembly, the swing resistance of the smoothing wheel can be reduced, so that the smoothing wheel can be effectively pressed on the winding product.

[0009] Optionally, one end of the swing rod is hinged to the flattening wheel through a support.

[0010] The above technical solution sets a support between the swing rod and the flattening wheel for transition, which can simplify the structure of the swing rod, facilitate the disassembly and maintenance of the flattening wheel, and move the center of the swing rod, the support and the flattening wheel assembly to one side of the flattening wheel, thereby facilitating the flattening wheel to press on the rolled product.

[0011] Optionally, the bearing assembly comprises a bearing with seat installed on the fixed support, and a rotating shaft installed on the inner ring of the bearing with seat and connected to the other end of the swing rod.

[0012] The above technical solution simplifies the structure between the bearing assembly and the swing rod and the fixed support, and reduces the resistance of the swing rod when swinging through the bearing assembly, so that the flattening wheel can effectively press on the rolled product.

[0013] Optionally, the first pressure assembly comprises a cylinder, one end of which is hinged to a fixed block installed on the fixed support, and the other end of which is hinged to a connecting shaft installed on the swing rod through a connecting block.

[0014] The above technical solution designs the structure of the first pressure assembly, uses the cylinder to provide the first pressure of the flattening wheel against the rolled product, and makes the flattening wheel abut against the rolled product with a relatively constant pressure under the action of the cylinder, thereby improving the flatness of the rolled product and reducing the problem of material edge curling.

[0015] Optionally, a floating joint is installed between the other end of the cylinder and the connecting block.

[0016] The above technical solution sets the floating joint, so that the swing rod can avoid the misalignment of the telescopic rod and the telescopic cylinder of the cylinder during swinging, thereby avoiding unnecessary wear of the cylinder and avoiding the misalignment of the cylinder hindering the swinging of the swing rod and affecting the force of the flattening wheel against the rolled product.

[0017] Optionally, the connecting shaft is installed on the swing rod through a locking block.

[0018] The above technical solution sets the locking block to lock the connecting shaft on the swing rod, which can prevent the axial movement of the connecting shaft from affecting the swinging of the swing rod, thereby ensuring that the flattening wheel can effectively press on the rolled product.

[0019] Optionally, the second pressure assembly comprises: an electromagnet two mounted at one end of the swing lever through a transition block; an electromagnet one mounted on the fixed support; the electromagnet one and the electromagnet two are magnetically coupled.

[0020] The technical scheme, the structure of the second pressure assembly is designed, the magnetic coupling connection between the electromagnet one and the electromagnet two is utilized, the second pressure of the flattening wheel acting on the winding product is provided, the second pressure and the first pressure are superposed, and the flattening force acting on the winding product is formed. When the winding product is in different states, the second pressure value of different sizes is set, the demand of the flattening pressure of the winding product in different states can be considered, the winding flatness is improved, and the problem of the material edge being warped is reduced.

[0021] Optionally, the transition block is located between the flattening wheel and the connecting shaft.

[0022] The technical scheme, the transition block is located between the flattening wheel and the connecting shaft, the second pressure can be more effectively applied to the flattening wheel, meanwhile, the effective use range of the second pressure can be widened, the flattening force acting on the winding product has a larger adjustable range and more accurate adjustable accuracy.

[0023] Optionally, the axis of the electromagnet one coincides with the axis of the electromagnet two, and both are perpendicular to the swing lever.

[0024] The technical scheme, the relative position of the electromagnet one and the electromagnet two is set, the electromagnetic force between the electromagnet one and the electromagnet two can be more efficiently transmitted, so that the flattening force acting on the winding product has a larger adjustable range and more accurate adjustable accuracy.

[0025] Compared with the prior art, the utility model discloses the flattening wheel, the swing lever for installing the flattening wheel, the first pressure assembly for driving the flattening wheel to be in contact with the winding product at the first pressure of setting, the second pressure assembly for driving the flattening wheel to be in contact with the winding product at the second pressure of setting. ACCURACY

[0026] Fig. 1 It is the whole structure schematic diagram of flattening wheel in the first visual angle that the embodiment provides;

[0027] Fig. 2 It is the whole structure schematic diagram of flattening wheel in the second visual angle that the embodiment provides;

[0028] Fig. 3It is the whole structure schematic diagram of the smoothing wheel under the third visual angle provided by the embodiment of the utility model;

[0029] Fig. 4 It is the plane structure schematic diagram of the smoothing wheel provided by the embodiment of the utility model;

[0030] Fig. 5 It is Fig. 4 the top view of the utility model;

[0031] In the figure: 001, fixed support; 002, bearing with seat; 003, rotating shaft; 004, air cylinder; 005, fixed block; 006, floating joint; 007, connecting block; 008, connecting shaft; 009, locking block; 010, electromagnet one; 011, electromagnet two; 012, winding shaft; 013, winding drum; 014, electrode chip; 015, smoothing wheel; 016, support; 017, wiring terminal one; 018, wiring terminal two; 019, wiring terminal three; 020, wiring terminal four; 021, transition block; 022, swing lever. DETAILED DESCRIPTION

[0032] The utility model will be further described below in combination with the drawings. The following embodiments are only used to more clearly illustrate the technical scheme of the utility model, and cannot limit the protection scope of the utility model.

[0033] The utility model further illustrates the working principle of the smoothing mechanism in the electrode chip winding process in lithium battery production.

[0034] As Figs. 1-5 shown, the electrode chip 014 is wound on the winding drum 013 in lithium battery production, and the winding drum 013 is installed on the winding shaft 012. The smoothing mechanism comprises: a smoothing wheel 015, a swing lever 022 for installing the smoothing wheel 015, a first pressure assembly for driving the smoothing wheel 015 to abut on the winding product (electrode chip 014) at a set first pressure, and a second pressure assembly for driving the smoothing wheel 015 to abut on the winding product (electrode chip 014) at a set second pressure. The first pressure assembly and the second pressure assembly are connected with the swing lever 022.

[0035] One end of the swing lever 022 is hinged with the smoothing wheel 015 through the support 016, and the other end of the swing lever 022 is connected with the fixed support 001 through the bearing assembly.

[0036] The bearing assembly comprises the bearing with seat 002 installed on the fixed support 001, and the rotating shaft 003 installed on the inner ring of the bearing with seat 002 and connected with the other end of the swing lever 022.

[0037] The first pressure assembly comprises a cylinder 004, one end of which is hinged to a fixed block 005 installed on the fixed support 001, and the other end of which is hinged to a connecting shaft 008 through a connecting block 007, the connecting shaft 008 being installed on the swing lever 022 through a locking block 009. A floating joint 006 is installed between the other end of the cylinder 004 and the connecting block 007.

[0038] The second pressure assembly comprises an electromagnet II 011 installed on one end of the swing lever 022 through a transition block 021, and an electromagnet I 010 installed on the fixed support 001; the electromagnet I 010 and the electromagnet II 011 are magnetically coupled. The transition block 021 is located between the flattening wheel 015 and the connecting shaft 008. The axis of the electromagnet I 010 coincides with the axis of the electromagnet II 011, and both are perpendicular to the swing lever 022.

[0039] The electromagnet I 010 is provided with a terminal I 017 and a terminal II 018; the electromagnet II 011 is provided with a terminal III 019 and a terminal IV 020. The terminal I 017, the terminal II 018, the terminal III 019 and the terminal IV 020 are respectively connected to a control circuit.

[0040] When the electrode tab 014 starts to be wound, the cylinder 004 serves as a power source to control the flattening wheel 015 to press on the surface of the electrode tab 014 at a relatively constant first pressure, while the pressing force of the flattening wheel 015 is changed by controlling the on-off electricity of the electromagnet I 010 and the electromagnet II 011 and the size of the current to achieve the required pressure of the electrode tab 014 in different winding diameters and other situations, to ensure the flatness of the material surface and reduce the edge lifting. That is, when the electrode tab 014 is in different states (with different winding diameters), a series of second pressure values of different sizes (a series of second pressure values corresponding to the input current of the electromagnet I 010 and the electromagnet II 011 one by one) are set, the magnetic force is changed by adjusting the electromagnet current, and the flattening pressure is indirectly controlled to change to meet the different pressure requirements of the electrode tab in different states. The needs of the electrode tab in different states for flattening pressure are considered, the winding flatness is improved, and the problem of material edge lifting is reduced.

[0041] The utility model discloses use cylinder as power source control to flatten the wheel down pressure and loosen the winding core pole piece, and through the electromagnetic iron on-off electricity simultaneously, and control the current size changes flatten the wheel down pressure degree to realize the pressure required to pole piece of different winding diameter and other conditions, ensure the material surface flat pressure guarantee flatness, reduce the warping edge etc. In view of the industry development demand of core etc., winding flattening is mostly dependent on constant pressure flat pressure, cannot take into account the demand of different winding diameter to different pressure simultaneously, causes winding to be bad, therefore the industry development must be inclined to the variable pressure flattening mode, guarantee material surface winding flatness and avoid the material edge to appear warping edge. The utility model implementation, core pole piece winding flattening, relative to other scheme of present situation: ① flatten the wheel pressure variable controllable, ② current control electromagnetic iron between the magnetic force is converted into down pressure, need not gas liquid pipeline, ③ pressure corresponding fast, the utility model discloses can high -efficient change pressure, effectively guarantee material surface winding flatness and avoid the material edge to appear warping edge, avoid defective product, improve the yield.

[0042] The above is only the preferred embodiment of the utility model, it should be pointed out, for ordinary skilled person in the art, without departing from the technical principle of the utility model, can make a number of improvements and deformation, these improvements and deformation also should be regarded as the protection scope of the utility model.

Claims

1. A soothing mechanism, characterized in that, Comprising: a smoothing wheel (015); a swing lever (022) for mounting the smoothing wheel (015); a first pressure assembly connected with the swing lever (022) for driving the smoothing wheel (015) to abut on the winding product at a set first pressure; a second pressure assembly connected with the swing lever (022) for driving the smoothing wheel (015) to abut on the winding product at a set second pressure.

2. The soothing mechanism of claim 1, wherein, Further comprising a fixed support (001), one end of the swing lever (022) is hinged with the smoothing wheel (015), and the other end of the swing lever (022) is connected with the fixed support (001) through a bearing assembly.

3. The soothing mechanism of claim 2, wherein, One end of the swing lever (022) is hinged with the smoothing wheel (015) through a support (016).

4. The soothing mechanism of claim 2, wherein, The bearing assembly comprises: a bearing with seat (002) mounted on the fixed support (001); a rotating shaft (003) mounted on the inner ring of the bearing with seat (002) and connected with the other end of the swing lever (022).

5. The soothing mechanism of claim 2, wherein, The first pressure assembly comprises:

6. The soothing mechanism of claim 5, wherein, a cylinder (004), one end of which is hinged with a fixed block (005) mounted on the fixed support (001), and the other end of which is hinged with a connecting block (007) through a connecting shaft (008) mounted on the swing lever (022).

7. The soothing mechanism of claim 5, wherein, A floating joint (006) is installed between the other end of the cylinder (004) and the connecting block (007).

8. The soothing mechanism of claim 5, wherein, The connecting shaft (008) is installed on the swing lever (022) through a locking block (009). The second pressure assembly comprises: an electromagnet two (011) mounted on one end of the swing lever (022) through a transition block (021); an electromagnet one (010) mounted on the fixed support (001); 9. The soothing mechanism of claim 8, wherein, The electromagnet one (010) is magnetically coupled with the electromagnet two (011).

10. The soothing mechanism of claim 9, wherein, The transition block (021) is located between the smoothing wheel (015) and the connecting shaft (008). The axis of the electromagnet one (010) coincides with the axis of the electromagnet two (011), and both are perpendicular to the swing lever (022).

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