CN218809276U

CN218809276U - Lithium battery diaphragm winding and unwinding chuck assembly with driving and clamping functions

Info

Publication number: CN218809276U
Application number: CN202223020617.9U
Authority: CN
Inventors: 许伟
Original assignee: Nanjing Libu Machinery Co ltd
Current assignee: Nanjing Libu Machinery Co ltd
Priority date: 2022-11-14
Filing date: 2022-11-14
Publication date: 2023-04-07
Anticipated expiration: 2032-11-14

Abstract

The utility model discloses a lithium battery diaphragm winding and unwinding chuck assembly with driving and clamping functions, which comprises a top head, a main shaft, a rotating sleeve, a fixed sleeve, a big gear, a small gear, a speed reducing motor, a movable plate, a motor base and a cylinder; the speed reducing motor is arranged on the wall plate through a motor base, and an output shaft of the motor is fixedly connected with a pinion; one end of the fixed sleeve is fixed on the wallboard, the rotating sleeve is rotatably sleeved in the fixed sleeve, one end of the rotating sleeve is fixedly connected with a large gear, the large gear is in meshing transmission connection with a small gear, the main shaft is axially slidably but circumferentially and non-rotatably arranged in the rotating sleeve, one end of the main shaft is connected with the top head, and the other end of the main shaft is rotatably connected with the movable plate; the cylinder is installed on the fixed sleeve, and the cylinder piston rod is connected with the movable plate. The utility model discloses a chuck rotates steadily, can provide invariable clamp force to guarantee in unfamiliar production process, the tension of the unfamiliar of unreeling is invariable, and the diaphragm of rolling is neat, not drunkenness.

Description

Lithium battery diaphragm winding and unwinding chuck assembly with driving and clamping functions

Technical Field

The utility model relates to a lithium battery diaphragm production technical field, concretely relates to have lithium battery diaphragm that drive and clamp function concurrently and receive and unreel cartridge assembly.

Background

The lithium battery diaphragm is mainly used for separating the positive electrode from the negative electrode of the battery and preventing the two electrodes from being in contact with each other to cause short circuit, and micropores in the film can allow lithium ions to pass through to form a charge-discharge loop. The diaphragm is a key core material of the lithium battery, is also a high value-added material with the highest technical barrier of the lithium battery, and accounts for about 20% -30% of the cost of the lithium battery. The performance of the separator determines the interface structure, internal resistance, battery capacity, life and safety performance of the battery.

The winding and unwinding mechanism is one of the most important parts in a lithium battery diaphragm production line. In the winding and unwinding mechanism of the lithium battery diaphragm production line, a diaphragm is wound on a steel winding core, and the winding core is fixed by winding and unwinding chucks extending from wallboards at two ends and is driven to rotate. The structural design of the winding and unwinding chuck is an important factor influencing whether a lithium battery diaphragm winding core can stably rotate or not and whether the diaphragm can bear constant tension during rotation or not.

SUMMERY OF THE UTILITY MODEL

In order to solve current lithium battery diaphragm roll core and to receive and unreel the in-process and can stably rotate to the diaphragm can bear certain tensile technical problem when rotatory, the utility model provides a have concurrently and drive and press from both sides lithium battery diaphragm of tight function and receive and unreel cartridge assembly.

The utility model adopts the technical proposal that:

a lithium battery diaphragm winding and unwinding chuck assembly with driving and clamping functions comprises a top, a main shaft, a rotating sleeve, a fixing sleeve, a large gear, a small gear, a speed reducing motor, a moving plate, a motor base and a cylinder; the speed reducing motor is arranged on the wall plate through a motor base, and an output shaft of the motor is fixedly connected with a pinion; one end of the fixing sleeve penetrates through the wallboard and is fixed on the wallboard through a screw, and the other end of the fixing sleeve horizontally extends to one side far away from the diaphragm winding core; the rotating sleeve is rotatably sleeved in the fixed sleeve, one end of the rotating sleeve, which extends out of the fixed sleeve, is fixedly connected with a large gear, the large gear is in meshing transmission connection with a small gear, a main shaft is axially slidably but circumferentially and non-rotatably mounted in the rotating sleeve, one end of the main shaft extends out of the fixed sleeve and is connected with a top, and the other end of the main shaft penetrates through a central hole of the large gear and is rotatably connected with a moving plate; the cylinder is installed on the fixed sleeve, and the cylinder piston rod horizontally extends outwards to be connected with the movable plate.

Furthermore, two cylinders are symmetrically arranged on two sides of the fixed sleeve.

Furthermore, a guide shaft is arranged on the outer side of the fixed sleeve, one end of the guide shaft is fixed on the fixed sleeve, and the other end of the guide shaft horizontally extends to the movable plate and is in sliding connection with the movable plate.

Furthermore, an adjusting block is installed below the motor base and used for adjusting the height of the motor base.

Furthermore, a long key groove is milled on the rotating sleeve, a transmission key is installed on the main shaft, and the length of the long key groove is far greater than that of the transmission key.

Furthermore, the inlet and the outlet of the rotating sleeve are tightly connected with the main shaft through a copper sleeve.

Further, the rotating sleeve is rotatably mounted in the fixed sleeve through four deep groove ball bearings.

Furthermore, a double-row angular contact ball bearing is installed at the end part of the main shaft, and the movable plate is fixedly sleeved on the bearing outer ring of the double-row angular contact ball bearing.

The utility model has the advantages that:

1. the movable plate is driven by the cylinder to move, the movable plate drives the main shaft to move axially back and forth, so that the combination and separation of the top and the winding core are realized, when the winding core is clamped by the top, the rotating sleeve is driven to rotate by the rotation of the motor driving gear, the main shaft and the top are driven to rotate by the rotating sleeve, and the top is driven to rotate the winding core; the chuck is stable in rotation and can provide constant clamping force, so that the tension of an unreeled diaphragm is constant, and the reeled diaphragm is tidy and does not move in the diaphragm production process.

2. The film roll clamping device is small in occupied space and large in bearing capacity, can clamp a film roll more than 3000kg, and can stably operate.

3. The structure is simple, the processing and the manufacturing are simple, and the assembly is easy; and the easily-worn ejector head part can be easily replaced.

Drawings

Fig. 1 is the structural schematic diagram of the lithium battery diaphragm winding and unwinding chuck assembly of the present invention.

Fig. 2 is a top view of fig. 1.

Fig. 3 is a view in the direction a of fig. 1.

Fig. 4 is a sectional view taken along the direction C-C in fig. 3.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings and a preferred embodiment.

Referring to fig. 1 to 4, the lithium battery diaphragm winding and unwinding chuck assembly with driving and clamping functions comprises a top 1, a main shaft 2, a deep groove ball bearing 3, a rotating sleeve 4, a fixed sleeve 5, a gearwheel 6, a double-row angular contact ball bearing 7, a transmission key 8, a guide shaft 9, a pinion 10, a reduction motor 11, a moving plate 12, a motor base 13, an adjusting block 14, a cylinder 15 and a copper bush 16.

The motor cabinet 13 is installed on the wallboard of winding and unwinding mechanism through the bolt that passes the slotted hole, and adjusting block 14 is installed to the below of motor cabinet 13, is equipped with a vertical ascending bolt in the adjusting block 14, can promote motor cabinet 13 and upwards slide along the wallboard when the bolt rotates upwards to stretch out, adjustment motor cabinet 13's height. The speed reducing motor 11 is fixedly arranged on the motor base 13, and the pinion 10 is fixedly sleeved on the output shaft of the motor.

The left end of the fixed sleeve 5 penetrates through the wall plate of the winding and unwinding mechanism and is fixedly connected with the wall plate through a bolt, and the right end of the fixed sleeve extends to one side far away from the diaphragm winding core along the horizontal direction. The two ends of the fixed sleeve 5 are sealed by a left end cover and a right end cover, the left end cover is provided with a through hole for allowing the main shaft 2 to pass through, and the right end cover is provided with a through hole for allowing the rotating sleeve 4 to pass through. The rotating sleeve 4 is rotatably installed in the fixed sleeve 5 through four deep groove ball bearings 3, the right end of the rotating sleeve 4 extends out of the fixed sleeve and is fixedly sleeved with the large gear 6, and the large gear 6 is in meshed transmission connection with the small gear 10. The long key groove is milled on the rotating sleeve 4, the transmission key 8 is installed on the main shaft 2, the main shaft 2 is axially slidable through the matching of the transmission key 8 and the long key groove but is connected with the rotating sleeve 4 in a circumferential non-rotating mode, the inlet and the outlet of the rotating sleeve 4 are tightly connected with the main shaft 2 through the copper sleeve 16, the left end of the main shaft 2 extends out of the left end cover of the fixed sleeve to be fixedly connected with the top head 1, and the right end of the main shaft freely penetrates through the large gear 6 to be rotatably connected with the moving plate 12.

The two cylinders 15 are symmetrically arranged on two sides of the fixed sleeve 5, cylinder seats of the two cylinders are arranged at the left end of the fixed sleeve 5, and piston rods extend out of two ends of the movable plate 12 in parallel with the fixed sleeve. The two cylinders are arranged, so that the moving plate can move more stably, the main shaft is guaranteed not to deflect in the moving process, the center of the thimble coincides with the center of the winding core, and the film roll rotates more stably. One end of the guide shaft 9 is fixed at the right end of the fixed sleeve 5 through a bolt, the other end of the guide shaft extends to the moving plate 12 along the direction parallel to the fixed sleeve 5, and the moving plate 12 is connected with the guide shaft 9 in a sliding mode through a connecting plate.

And (3) realizing the rotation function of the diaphragm: as shown in fig. 1, torque is transmitted from the reduction motor 11 to the pinion gear 10, and the pinion gear 10 is engaged with the large gear 6. The height of the motor base 13 is adjusted through the adjusting block 14, and the meshing clearance between the small gear 10 and the large gear 6 is adjusted. The bull gear 6 is fixed on rotating sleeve 4, has milled the long keyway on rotating sleeve 4, and main shaft 2 places in rotating sleeve 4, because install transmission key 8 on the main shaft, so transmission sleeve 4 can drive main shaft 2 rotatory through the key transmission. The rotating sleeve 4 is placed in the fixed sleeve 5, and the middle of the rotating sleeve is provided with four deep groove ball bearings 3, so that the smooth rotation is ensured. One end of the main shaft 2 is provided with a plug 1. The top 1 is made of high-hardness and high-wear-resistance POM (polyethylene) materials, is directly contacted with the steel coil core, and is provided with a key matched with a key groove in the steel coil core to drive the steel coil core to rotate, wherein the key is arranged on the top 1.

The implementation of the top clamping function: as shown in fig. 1 and 2. First, the cylinder 15 is attached to the fixed sleeve 5, and the cylinder 15 pushes the moving plate 12 to move. The distance that can be moved is labeled 100 in the figure. The moving plate 12 is connected to the main shaft 2 via a double row angular contact ball bearing 7. This ensures that axial forces can be transmitted without the rotational torque of the spindle 2 being transmitted to the moving plate 12. In order to balance the excessive rotating force, a small amount of rotating force is generated due to friction of the bearing, a guide shaft 9 is installed outside the fixing sleeve 5 so as to prevent the rotating force from being transmitted to the cylinder to damage the cylinder 11, and the guide shaft 9 also plays a role of guiding the moving plate to move in parallel. As shown in fig. 3 and 4. Secondly, the main shaft 2 is placed in the rotating sleeve 4, a long key groove is milled in the rotating sleeve 4, and the long key groove is long and far longer than the transmission key 8, so that the transmission key can slide back and forth in the long key groove, and the main shaft 2 can move back and forth in the rotating sleeve 4. The inlet and the outlet of the rotating sleeve 4 are matched with the main shaft 2 tightly, and the copper sleeve is arranged, so that large radial force can be borne, the sliding smoothness is ensured, and the main shaft cannot jump.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and the improvements and modifications are also within the protection scope of the present invention.

Claims

1. A lithium battery diaphragm winding and unwinding chuck assembly with driving and clamping functions is characterized by comprising a top head (1), a main shaft (2), a rotating sleeve (4), a fixing sleeve (5), a large gear (6), a small gear (10), a speed reducing motor (11), a moving plate (12), a motor base (13) and a cylinder (15); the speed reducing motor (11) is arranged on the wall plate through a motor base (13), and an output shaft of the motor is fixedly connected with the pinion (10); one end of the fixing sleeve (5) penetrates through the wallboard and is fixed on the wallboard through a screw, and the other end of the fixing sleeve horizontally extends to one side far away from the diaphragm winding core; the rotating sleeve (4) is rotatably sleeved in the fixed sleeve (5), one end of the rotating sleeve, which extends out of the fixed sleeve (5), is fixedly connected with a large gear (6), the large gear (6) is in meshed transmission connection with a small gear (10), the main shaft (2) is axially slidably but circumferentially and non-rotatably mounted in the rotating sleeve (4), one end of the main shaft (2) extends out of the fixed sleeve (5) and is connected with the top head (1), and the other end of the main shaft penetrates through a central hole of the large gear (6) and is rotatably connected with a moving plate (12); the cylinder (15) is arranged on the fixed sleeve (5), and a cylinder piston rod horizontally extends outwards to be connected with the movable plate (12).

2. The lithium battery diaphragm winding and unwinding chuck assembly with driving and clamping functions as claimed in claim 1, wherein two air cylinders (15) are symmetrically arranged on both sides of the fixing sleeve (5).

3. The lithium battery diaphragm winding and unwinding chuck assembly with driving and clamping functions as claimed in claim 2, wherein the fixed sleeve (5) is provided with a guide shaft (9) at an outer side thereof, one end of the guide shaft (9) is fixed on the fixed sleeve (5), and the other end thereof horizontally extends towards the moving plate (12) and is slidably connected with the moving plate (12).

4. The lithium battery diaphragm winding and unwinding clamp head assembly with the driving and clamping functions as claimed in claim 1, wherein an adjusting block (14) is installed below the motor base (13), and the adjusting block (14) is used for adjusting the height of the motor base (13).

5. The lithium battery diaphragm winding and unwinding chuck assembly with the driving and clamping functions as claimed in claim 1, wherein a long key slot is milled on the rotating sleeve (4), a transmission key (8) is mounted on the spindle (2), and the length of the long key slot is much greater than that of the transmission key (8).

6. The lithium battery diaphragm winding and unwinding chuck assembly with the driving and clamping functions as claimed in claim 5, wherein the inlet and the outlet of the rotating sleeve (4) are tightly connected with the spindle (2) through a copper sleeve.

7. The lithium battery diaphragm winding and unwinding chuck assembly with driving and clamping functions as claimed in claim 1, wherein the rotating sleeve (4) is rotatably mounted in the fixed sleeve (5) through four deep groove ball bearings (3).

8. The lithium battery diaphragm winding and unwinding clamp head assembly with the driving and clamping functions as claimed in claim 1, wherein a double-row angular contact ball bearing (7) is mounted at an end of the main shaft (2), and the moving plate (12) is fixedly sleeved on a bearing outer ring of the double-row angular contact ball bearing (7).