CN115432493A - Pole piece unwinding device - Google Patents

Abstract

The invention relates to the technical field of lithium battery pole piece manufacturing, in particular to a pole piece unreeling device which comprises a linkage support assembly, an unreeling mechanism, a wrinkle removing assembly and a deviation correcting mechanism, wherein the unreeling mechanism and the wrinkle removing assembly are movably arranged on the linkage support assembly; the deviation correcting mechanism can drive the unwinding mechanism and the wrinkle removing assembly to synchronously move; according to the invention, the unwinding mechanism and the wrinkle removing assembly are synchronously arranged on the linkage support assembly, and the deviation correcting mechanism is utilized to simultaneously adjust the unwinding mechanism and the wrinkle removing assembly, so that the synchronous telescopic position of the unwinding mechanism and the wrinkle removing assembly is adjusted, the deviation correcting and wrinkle removing functions are synchronously realized in the unwinding operation process of the pole pieces, the stable winding or unwinding operation of pole piece coil stock is ensured, the stability and winding alignment degree of the wound pole pieces are improved, and the product quality is further ensured.

Description

Pole piece unwinding device

technical field

The invention relates to the technical field of lithium battery pole piece manufacturing, in particular to a pole piece unwinding device.

Background technique

At present, with the increase in demand for batteries, there are more and more pole piece mechanisms for manufacturing batteries, and there are various mechanisms for battery pole pieces. Among them, the unwinding mechanism occupies an important role in the processes of winding, lamination, and die cutting. The structural design of the unwinding mechanism directly affects the stability of the pole piece operation, the alignment of the winding and the product quality.

The existing technology, such as the Chinese patent application number "202120674058.X", discloses a pole piece unwinding device with a deviation correcting function, including a linkage bracket assembly, used for tensioning/releasing the tensioning of the pole piece coil material. mechanism, a rotating power mechanism for driving the tensioning mechanism to rotate, and a deviation correction mechanism for displacing the tensioning mechanism. The tensioning mechanism and the rotation power mechanism are slidably arranged on the linkage bracket assembly, and the deviation correction mechanism is fixedly arranged on the linkage bracket assembly. The output end of the correction mechanism is connected to the tension mechanism; during the rotation of the tension mechanism, the correction mechanism can adjust the telescopic position of the tension mechanism in real time, so as to realize the stable winding or unwinding operation of the pole piece coil material; the linkage bracket assembly The tensioning mechanism and the auxiliary roller assembly are connected and fixed as a whole to realize the synchronous deviation correction operation of the tensioning mechanism and the auxiliary roller assembly.

However, this unwinding device does not take into account that the unwinding shaft and the auxiliary roller are not parallel, or the coil material is not uniform, resulting in wrinkles during operation; moreover, the unwinding device only has a single unwinding structure, and in practice There is a waiting time for changing rolls during use, resulting in low production efficiency.

Contents of the invention

In order to at least partly solve the above-mentioned background technology and other potential problems, the embodiment of the present invention provides a pole piece unwinding device, according to which the pole piece can realize deflection correction and removal simultaneously during the unwinding operation. Wrinkle function to ensure the stability of pole piece unwinding operation, winding alignment and product quality.

In order to achieve the above object, the present invention adopts the following technical solutions to achieve:

A pole piece unwinding device, comprising:

linkage bracket assembly;

an unwinding mechanism, the unwinding mechanism is movably arranged on the linkage bracket assembly, and is used to support the pole pieces and perform unwinding operations on them;

The wrinkle removal assembly is movably arranged on the linkage bracket assembly and arranged at a distance from the unwinding mechanism. The wrinkle removal assembly includes a support frame and an arc rotatably arranged on the support frame Shaped rollers, the support frame is provided with adjustment knobs and adjustment rods for adjusting the bending arc and bending direction of the curved rollers; and,

A deviation correction mechanism, the deviation correction mechanism is arranged on the linkage bracket assembly;

Wherein, the deviation correcting mechanism can drive the unwinding mechanism and the wrinkle removing assembly to move synchronously.

Optionally, there are two groups of the unwinding mechanism and the wrinkle removing assembly;

Optionally, two wrinkle removing assemblies are arranged between the two unwinding mechanisms;

Optionally, the deviation-correcting mechanism can drive two groups of unwinding mechanisms and wrinkle-removing components to move synchronously.

Optionally, the arc rollers of the two wrinkle removing assemblies share a support frame, the support frame is movably arranged on the linkage support assembly through a sliding assembly, and the support frame is connected with the deviation correction mechanism.

Optionally, the support frame is provided with a connecting piece extending to the side where the deviation correcting mechanism is located, and the cantilevered end of the connecting piece is provided with a support seat to connect with the deviation correcting mechanism.

Optionally, the sliding assembly includes a sliding block arranged on the support frame, and the sliding block forms a sliding guiding cooperation with a guide rail on the linkage bracket assembly.

Optionally, the unwinding mechanism includes:

a mounting seat, the mounting seat is movably arranged on the linkage bracket assembly through a sliding assembly;

A servo motor, the servo motor is arranged on the mounting base for providing power;

An air expansion shaft, one end of which is in transmission connection with the drive shaft of the servo motor, and the other end extends away from the mounting seat;

Wherein, the drive shaft of the servo motor is hollow tubular, one end of which communicates with the air expansion shaft, and the other end is connected to an external air source through a rotating air joint.

Optionally, the unwinding mechanism also includes:

A connecting pipe, the connecting pipe is rotatably arranged in the mounting seat via a bearing, and one end of the connecting pipe communicates with the air expansion shaft, and the other end communicates with the driving shaft.

Optionally, the correction mechanism includes:

a mounting frame, the mounting frame is fixed on the linkage bracket assembly;

an electric driver disposed on the mounting frame for providing power; and,

a connecting plate, the connecting plate is connected with the driving rod of the electric driver,

Wherein, both the unwinding mechanism and the wrinkle removing assembly are fixed on the connecting plate, and the unwinding mechanism and the wrinkle removing assembly are driven to move synchronously through the connecting plate when the driving rod of the electric driver is stretched.

Optionally, the installation frame includes at least one connecting rod, one end of the connecting rod is fixed on the linkage bracket assembly, and the other end is provided with a fixing plate, and the electric driver is hingedly arranged on the fixing plate.

Optionally, the linkage bracket assembly includes a large plate extending vertically,

The two sides of the large plate are respectively provided with fixed bases extending outward, and the unwinding mechanism and the wrinkle removal assembly are provided with sliders, which respectively form sliding guides with the guide rails on the fixed bases on both sides of the large plate. Cooperate.

Compared with the prior art, the present invention arranges the unwinding mechanism and the wrinkle removing assembly on the linkage support assembly to move synchronously, and uses the deviation correction mechanism to simultaneously adjust the unwinding mechanism and the wrinkle removing assembly to adjust their synchronous telescopic positions, so that During the unwinding operation of the pole piece, the deviation correction and wrinkle removal functions are simultaneously realized, which ensures the stable winding or unwinding operation of the pole piece coil material, improves the stability of the winding pole piece, and the alignment of winding, thereby ensuring product quality.

Description of drawings

Fig. 1 shows a top view of a pole piece unwinding device provided according to a specific embodiment of the present invention;

Fig. 2 is a schematic structural view of the pole piece unwinding device in Fig. 1 at another viewing angle;

Fig. 3 is shown as the sectional view of A-A section among Fig. 1;

Fig. 4 shows a schematic structural view of a wrinkle removal assembly provided according to a specific embodiment of the present invention;

Explanation of symbols in the figure: 10, linkage bracket assembly; 11, guide rail; 12, large plate; 13, fixed base; 20, unwinding mechanism; 21, mounting seat; 22, servo motor; 23, air shaft; material ring; 24. drive shaft; 25. rotary air joint; 26. connecting pipe; 27. bearing; 28. connecting flange; ; 34, adjusting rod; 35, connector; 36, support base; 37, slide block; 40, correction mechanism; 41, installation frame; 411, connecting rod; 412, fixed plate; 42, electric driver; 43, connecting plate ; 44, drive rod.

detailed description

In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further clarified below in conjunction with specific drawings.

As mentioned above, as shown in FIGS. 1 and 2 , the present invention provides a pole piece unwinding device, which includes a linkage bracket assembly 10 , an unwinding mechanism 20 , a wrinkle removing assembly 30 and a deviation correction mechanism 40 . Wherein, the linkage bracket assembly 10 is mainly used for supporting and fixing, and is used for installing and arranging components such as the unwinding mechanism 20 , the wrinkle removing assembly 30 , and the deviation correcting mechanism 40 .

The unwinding mechanism 20 is movably arranged on the linkage bracket assembly 10, and is used to support the pole piece and perform an unwinding operation on it;

The wrinkle removal assembly 30 is movably arranged on the linkage bracket assembly 10 and arranged at a distance from the unwinding mechanism 20 . The wrinkle removal assembly 30 includes a support frame 31 and is rotatably arranged on the support frame 31 The arc roller 32, the support frame 31 is provided with an adjustment knob 33 and an adjustment rod 34 for adjusting the bending arc and bending direction of the arc roller 32;

The deviation correcting mechanism 40 is arranged on the linkage bracket assembly 10 , and the deviation correcting mechanism 40 can drive the unwinding mechanism 20 and the wrinkle removing assembly 30 to move synchronously.

In the technical solution provided by the present invention, the pole piece coil material is released through the unwinding mechanism 20, and then transported backwards after passing through the wrinkle removal assembly 30. Wrinkle assembly 30, to change the running track of the pole piece coil material, prevent the pole piece coil material from wrinkling to achieve the wrinkle removal effect;

By synchronously moving the unwinding mechanism 20 and the wrinkle-removing assembly 30 on the linkage bracket assembly 10, and using the correction mechanism 40 to simultaneously adjust the unwinding mechanism 20 and the wrinkle-removing assembly 30 to adjust their synchronous telescopic positions, so that the pole piece is During the unwinding process, the deviation correction and wrinkle removal functions are realized simultaneously, which ensures the stable winding or unwinding operation of the pole piece coil material, improves the stability of the winding pole piece, the alignment of winding, and thus ensures the product quality.

It should be noted that, in the present invention, the curved roller 32 is a mechanism well known to those skilled in the art. Specifically, a series of rotatable curved roller surfaces are installed on the curved shaft to achieve the roller stretching of the web. . In the present invention, the arc roller 32 is assembled on the support frame 31, guides the pole piece released by the unwinding mechanism 20, and adjusts the bending arc and bending direction of the arc roller 32 through the adjustment knob 33 and the adjustment rod 34 , to achieve the wrinkle removal function of the pole piece.

It should be noted that, in the pole piece unwinding device provided by the present invention, an unwinding mechanism 20 and a wrinkle removing assembly 30 form a group to realize unwinding and wrinkle removal of a pole piece coil material.

In some embodiments, there are two groups of the unwinding mechanism 20 and the wrinkle removing assembly 30, and the two groups of the unwinding mechanism 20 and the wrinkle removing assembly 30 can operate independently, so that one is in standby and the other is in use, saving a lot of trouble. The waiting time for sheet change is reduced, thereby improving production efficiency.

Further, in the present invention, the above-mentioned two groups of unwinding mechanisms 20 and wrinkle-removing assemblies 30 can be arranged group by group, but since the unwinding mechanism 20 includes a driving source for providing the operating power for pole piece unwinding, its volume is relatively large. And in consideration of multi-angle factors such as the left and right counterweights of the overall device structure and structural stability, in a preferred solution, two wrinkle removing assemblies 30 are arranged between the two unwinding mechanisms 20 .

Furthermore, in the present invention, the function of the correction mechanism 40 is to drive the unwinding mechanism 20 and the wrinkle removal assembly 30 to move synchronously. Therefore, in a preferred solution of the present invention, the correction mechanism 40 is only set There is one, the deviation correcting mechanism 40 simultaneously drives the two sets of unwinding mechanisms 20 and the wrinkle removing assembly 30 to move synchronously, thus reducing the number of components and reducing the volume of the pole piece unwinding device.

In some embodiments, the arc rollers 32 of the two wrinkle removing assemblies 30 share a support frame 31, and the support frame 31 is movably arranged on the linkage support assembly 10 through a sliding assembly, and the support frame 31 and The deviation correction mechanism 40 is connected. In actual use, the support frame 31 is driven to move by the deviation-correcting mechanism 40, so that the functions of deviation-correcting and wrinkle-removing can be realized simultaneously.

In some embodiments, as shown in FIG. 4 , the support frame 31 is provided with a connecting piece 35 extending toward the side where the deviation correction mechanism 40 is located. 40 are connected.

In the present invention, the support frame 31 is movably arranged on the linkage bracket assembly 10 through a sliding assembly. As a specific implementation of the sliding assembly, the sliding assembly includes The sliding block 37, the sliding block 37 forms a sliding guide fit with the guide rail 11 on the linkage bracket assembly 10.

Further preferably, in order to ensure the stability and reliability of the support frame 31 during the reciprocating movement, sliders 37 are provided on both sides of the support frame 31, and the sliders 37 and the guide rails 11 on the linkage bracket assembly 10 form a sliding guide Cooperate; more preferably, two sliding blocks 37 arranged at intervals are arranged on one side of the support frame 31, so as to ensure the stability and reliability of the deviation correction mechanism 40 when driving the support frame 31 and its upper arc roller 32 to reciprocate .

In the present invention, the function of the unwinding mechanism 20 is to support the pole piece coil material and perform unwinding operation on it. As a specific implementation of the unwinding mechanism 20 , as shown in FIG. 3 , the unwinding mechanism 20 includes a mounting seat 21 , a servo motor 22 and an air expansion shaft 23 ;

Wherein, the mounting seat 21 is used as a supporting part of the unwinding mechanism 20, which is movably arranged on the linkage bracket assembly 10 through a sliding assembly. As a specific embodiment of the sliding assembly, specifically, a sliding block 37 can be provided on the mounting base 21 , and the sliding block 37 can form a sliding guiding cooperation with the guide rail 11 provided on the linkage bracket assembly 10 .

The servo motor 22 is arranged on the mounting base 21 to provide power; one end of the air expansion shaft 23 is in transmission connection with the drive shaft 24 of the servo motor 22, and the other end faces away from the mounting base 21. direction; wherein, the drive shaft 24 of the servo motor 22 is a hollow tube, one end of which communicates with the air expansion shaft 23, and the other end is connected to an external air source through a rotary air joint 25.

In specific use, the pole piece coil material to be unwound is sleeved on the air expansion shaft 23, and the air expansion shaft is inflated by rotating the air joint 25 so that the pole piece coil material is fixed on the air expansion shaft 23. on the shaft 23; then the air expansion shaft 23 and the pole piece coil material fixed on it are driven by the servo motor 22 to rotate, and the pole piece unwinding action is performed.

It should be noted that, in the present invention, in order to ensure that the positions of different pole piece coils are relatively consistent after being sleeved on the air expansion shaft 23 for fixing, the end of the air expansion shaft 23 adjacent to the servo motor 22 is provided with a retaining ring 231 , the inner end of the pole piece coil is positioned through the retaining ring 231 to ensure that the positions of different pole piece coils placed on the air expansion shaft 23 are consistent.

In the above technical solution, the pole piece coil can be fixed by ventilating the drive shaft 24 into the air expansion shaft 23, which is simple and convenient, and overcomes the complicated structure brought about by the cylinder compression of the existing pole piece coil. defect.

In some embodiments, the unwinding mechanism 20 further includes a connecting pipe 26 , the connecting pipe 26 is rotatably arranged in the mounting seat 21 via a bearing 27 , and one end of the connecting pipe 26 is connected to the air shaft 23 communicate with each other, and communicate with the drive shaft 24 at the other end.

More specifically, in order to ensure stability, both ends of the connecting pipe 26 are provided with bearings 27 to form a rotational fit with the mounting seat 21; the end of the connecting pipe 26 adjacent to the servo motor 22 is provided with a connecting flange 28, One side of the connecting flange 28 is fixed on the end of the connecting pipe 26 , and the other side is fixed on the servo motor 22 .

In the present invention, the function of the correction mechanism 40 is to drive the unwinding mechanism 20 of the pole piece coil material and the wrinkle removing assembly 30 to move synchronously, so as to ensure the alignment of the pole piece winding. As a specific implementation of the deviation correction mechanism 40, the deviation correction mechanism 40 includes a mounting frame 41, an electric driver 42 and a connecting plate 43, and the mounting frame 41 is used as a supporting part of the deviation correction mechanism 40 for supporting the electric driver 42 and a connecting plate 43, the mounting frame 41 is fixed on the linkage bracket assembly 10; in some embodiments, the mounting frame 41 includes at least one connecting rod 411, and one end of the connecting rod 411 is fixed on the On the linkage bracket assembly 10 , the other end is provided with a fixed plate 412 , and the electric driver 42 is hingedly arranged on the fixed plate 412 .

The electric driver 42 is arranged on the mounting frame 41 to provide power; the connecting plate 43 is connected to the driving rod 44 of the electric driver 42, wherein the unwinding mechanism 20 and the wrinkle removing assembly 30 Both are fixed on the connecting plate 43, and when the driving rod 44 of the electric driver 42 stretches, the connecting plate 43 drives the unwinding mechanism 20 and the wrinkle removing assembly 30 to move synchronously.

Based on the above technical solution, by using the electric driver 42 for deviation correction drive, it has the advantages of maintenance-free, small recoil, high dynamic response and long service life, and solves the problem that current deviation correction uses servo drive, which leads to many driving structures, high cost and complex structure And the defect that the control operation is complicated.

In some embodiments, the linkage bracket assembly 10 includes a large plate 12 extending vertically, and the two sides of the large plate 12 are respectively provided with fixed bases 13 extending outward, and the unwinding mechanism 20 and The wrinkle removing components 30 are provided with sliders 37, which respectively cooperate with the guide rails 11 on the fixed bases 13 on both sides of the large board 12 to form sliding guides.

The basic principles, main features and characteristics of the present invention have been shown and described above. Those skilled in the industry should understand that the present invention is not limited by the above-mentioned embodiments. What are described in the above-mentioned embodiments and the description only illustrate the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will also have Variations and improvements are possible which fall within the scope of the claimed invention. The scope of the claimed invention is defined by the appended claims and their equivalents.

Claims (10)

1. A pole piece unwinding device, characterized in that, comprising: Linkage support assembly (10); an unwinding mechanism (20), the unwinding mechanism (20) is movably arranged on the linkage bracket assembly (10), and is used to support the pole piece and perform an unwinding operation on it; The wrinkle removal assembly (30), the wrinkle removal assembly (30) is movably arranged on the linkage bracket assembly (10), and is spaced apart from the unwinding mechanism (20), the wrinkle removal assembly (30) ) comprises a support frame (31) and an arc roller (32) arranged in rotation on the support frame (31), and the support frame (31) is provided with an adjustment knob (33) and an adjustment rod (34) for adjusting the bending arc and bending direction of the curved roller (32); and, A deviation correction mechanism (40), the deviation correction mechanism (40) is arranged on the linkage bracket assembly (10); Wherein, the deviation correcting mechanism (40) can drive the unwinding mechanism (20) and the wrinkle removing assembly (30) to move synchronously. 2. The pole piece unwinding device according to claim 1, characterized in that, the unwinding mechanism (20) and the wrinkle removing assembly (30) are provided with two groups; Two wrinkle removing assemblies (30) are arranged between two unwinding mechanisms (20); The deviation correcting mechanism (40) can drive two groups of unwinding mechanisms (20) and wrinkle removing components (30) to move synchronously. 3. The pole piece unwinding device according to claim 2, characterized in that, the arc rollers (32) of the two wrinkle removing assemblies (30) share a support frame (31), and the support frame (31) passes through The slide assembly is movably arranged on the linkage bracket assembly (10), and the support frame (31) is connected with the deviation correction mechanism (40). 4. The pole piece unwinding device according to claim 3, characterized in that, the support frame (31) is provided with a connecting piece (35) extending to the side where the deviation correction mechanism (40) is located, and the connecting piece ( The hanging end of 35) is provided with a support seat (36) connected with the correction mechanism (40). 5. The pole piece unwinding device according to claim 3, characterized in that, the slide assembly comprises a slide block (37) arranged on the support frame (31), the slide block (37) and the slide block (37) The guide rail (11) on the linkage bracket assembly (10) constitutes sliding guide fit. 6. The pole piece unwinding device according to claim 1, characterized in that, the unwinding mechanism (20) comprises: A mounting seat (21), the mounting seat (21) is movably arranged on the linkage bracket assembly (10) through a sliding assembly; A servo motor (22), the servo motor (22) is arranged on the mounting seat (21) for providing power; An air expansion shaft (23), one end of the air expansion shaft (23) is in transmission connection with the drive shaft (24) of the servo motor (22), and the other end extends away from the mounting seat (21); Wherein, the drive shaft (24) of the servo motor (22) is hollow tubular, one end of which communicates with the air expansion shaft (23), and the other end is connected to an external air source through a rotary air joint (25). 7. The pole piece unwinding device according to claim 6, characterized in that, the unwinding mechanism (20) further comprises: A connecting pipe (26), the connecting pipe (26) is rotatably arranged in the mounting base (21) via a bearing (27), and one end of the connecting pipe (26) communicates with the air expansion shaft (23) , and the other end communicates with the drive shaft (24). 8. The pole piece unwinding device according to claim 1, characterized in that, the deviation correction mechanism (40) comprises: a mounting frame (41), the mounting frame (41) is fixed on the linkage bracket assembly (10); an electric driver (42), the electric driver (42) is arranged on the mounting frame (41) for providing power; and, A connecting plate (43), the connecting plate (43) is connected with the driving rod (44) of the electric driver (42), Wherein, the unwinding mechanism (20) and the wrinkle removing assembly (30) are all fixed on the connecting plate (43), and when the driving rod (44) of the electric driver (42) stretches, the connecting plate ( 43) Driving the unwinding mechanism (20) and the wrinkle removing assembly (30) to move synchronously. 9. The pole piece unwinding device according to claim 8, characterized in that, the mounting frame (41) includes at least one connecting rod (411), and one end of the connecting rod (411) is fixed on the linkage On the bracket assembly (10), a fixed plate (412) is provided at the other end, and the electric driver (42) is hingedly arranged on the fixed plate (412). 10. The pole piece unwinding device according to claim 1, characterized in that, the linkage bracket assembly (10) comprises a large plate (12) extending vertically, Both sides of the large plate (12) are respectively provided with fixed bases (13) extending outwards, and the unwinding mechanism (20) and the wrinkle removing assembly (30) are provided with sliders (37) And form the slide guide cooperation with the guide rails (11) on the fixed base (13) on both sides of the large plate (12) respectively.

Images