A lateral stretch entry device for lithium battery separators

Abstract

The application discloses a kind of transverse stretching entrance device for lithium battery diaphragm, unpowered entrance chain wheel disc, entrance shear roll and deviation rectification sensor, chain clamp track are respectively installed on track longitudinal adjustment platform, and the buckle chain tooth on entrance chain wheel disc extends into the hollow area on chain clamp track and the chain clamp on chain clamp track can drive entrance chain wheel disc;The track longitudinal adjustment platform is installed on chain wheel disc transverse adjustment platform and can move linearly in longitudinal direction relative to chain wheel disc transverse adjustment platform, and the chain wheel disc transverse adjustment platform is driven by linear motor, and linear motor can drive chain wheel disc transverse adjustment platform to move linearly in transverse direction.The present application rectifies accurately and quickly by linear motor entrance chain wheel disc, prevents the clamp from being caused by film surface width variation too fast and solves the problem that deviation rectification is not accurate and slow in response by traditional hydraulic pressure or cylinder as actuating mechanism, so as to improve production line stability and realize the improvement of production efficiency.

Description

Technical Field

[0001] This invention relates to the field of diaphragm stretching technology, specifically to a transverse stretching inlet device for lithium battery diaphragms. Background Technology

[0002] Traditional stretching machines typically use cylinders or hydraulic devices as the actuators for the web guiding system. However, these systems often suffer from slow response speeds and inefficient control, affecting the accuracy of the web guiding system. With the increasing speed of diaphragm production lines, changes in membrane width often occur instantaneously. Because cylinders or hydraulic systems are inherently slow actuators, they cannot promptly engage the chain clamps, leading to membrane detachment and breakage. Furthermore, cylinders or hydraulic systems also suffer from low control precision. Since cylinders use compressed air to drive the piston, their accuracy is relatively low, potentially resulting in insufficient movement distance during web guiding control and causing detachment. Summary of the Invention

[0003] The purpose of this invention is to address the problems existing in the prior art by providing a lateral stretching inlet device for lithium battery separators.

[0004] The objective of this invention is achieved through the following technical solution:

[0005] A transverse stretching inlet device for lithium battery separators includes an inlet sprocket, an inlet shear roller and a correction sensor, and a chain clamp track. The device is characterized in that: the unpowered inlet sprocket, inlet shear roller and correction sensor, and chain clamp track are respectively mounted on a longitudinal adjustment platform; the chain teeth on the inlet sprocket extend into the hollowed-out area of ​​the chain clamp track, and the chain clamp on the chain clamp track can drive the inlet sprocket; the longitudinal adjustment platform is mounted on the transverse adjustment platform of the sprocket and can move longitudinally linearly relative to the transverse adjustment platform; the transverse adjustment platform of the sprocket is driven by a linear motor, which can drive the transverse adjustment platform of the sprocket to move laterally linearly to approach or move away from the separator.

[0006] The linear motor is fixedly mounted on the inlet bracket. Horizontal sliding rails are arranged on both sides of the linear motor. The sliding seat at the bottom of the sprocket disc horizontal adjustment platform is correspondingly embedded in the horizontal sliding rails. The output end of the linear motor is fixedly connected to the sliding seat at the bottom of the sprocket disc horizontal adjustment platform.

[0007] The sprocket disc transverse adjustment platform is provided with a longitudinal sliding rail, and the sliding seat at the bottom of the longitudinal adjustment platform is correspondingly embedded in the longitudinal sliding rail. The piston rod end of the tensioning cylinder is fixedly connected to the longitudinal adjustment platform.

[0008] The track longitudinal adjustment platform has a fixed base at one end of its bottom, which is used to fix the end of the piston rod of the tensioning cylinder. The tensioning cylinder is fixedly installed on the sprocket disc transverse adjustment platform.

[0009] A wire displacement sensor is installed at the bottom of the other end of the longitudinal adjustment platform of the track, and the wire displacement sensor is connected to the lateral adjustment platform of the sprocket disc.

[0010] The other end of the longitudinal adjustment platform of the track is equipped with an inlet shear roller and a correction sensor, and the inlet shear roller is located inside the correction sensor.

[0011] The linear motor is equipped with a grating ruler, which can accurately reflect the displacement at the output end of the linear motor.

[0012] The chain clamp track at the inlet sprocket is connected to the chain clamp track at the outlet sprocket via an extendable track plate.

[0013] The extendable track plate and the chain clamp track are connected by an H-shaped and T-shaped track plate interlocking structure. The H-shaped and T-shaped track plate interlocking structure not only strengthens the structure but also ensures that the track surface is relatively flat, which is conducive to the operation of the chain clamp.

[0014] The inlet sprocket disc is equipped with a magnetic clamp at the inlet side end, which is mounted on the piston rod end of the end cylinder. The position of the strong magnetic block on the magnetic clamp is adjustable, and the clamp handle of the chain clamp can be guided to close by adjusting the position of the strong magnetic block.

[0015] The present invention has the following advantages over the prior art:

[0016] The transverse stretching inlet device provided by this invention utilizes the characteristics of a linear motor to precisely and quickly correct the inlet sprocket, preventing disengagement caused by excessively rapid changes in the film width. This solves the problems of inaccurate correction and slow response of traditional hydraulic or pneumatic cylinder actuators, thereby improving production line stability and increasing production efficiency.

[0017] The transverse stretching inlet device provided by this invention uses a non-powered inlet sprocket to cooperate with the chain clamp track, thereby greatly reducing the resistance of the chain clamp on the track and solving the problem of large running resistance of the chain clamp at the turning point of the ring track in the prior art. This improves the smoothness of the chain clamp operation and thus improves the stability of the production line operation. Attached Figure Description

[0018] Appendix Figure 1 This is a schematic diagram of the transverse stretching inlet device for lithium battery separators provided by the present invention.

[0019] Appendix Figure 2This is a partial structural schematic diagram of the lateral stretching inlet device for lithium battery separators provided by the present invention.

[0020] Appendix Figure 3 For the appendix Figure 2 The provided diagram shows the operational status of the local structure.

[0021] Appendix Figure 4 The diagram shows the state of the diaphragm at different positions within the correction sensor.

[0022] Appendix Figure 5 The diagram shows the state of the transverse stretching inlet device for lithium battery separator provided by the present invention when used in pairs.

[0023] Wherein: 1—Inlet sprocket; 2—Inlet shear roller; 3—Correction sensor; 4—Wire displacement sensor; 5—Linear motor; 6—Inlet bracket; 7—Sprocket lateral adjustment platform; 8—Tensioning cylinder; 9—Extendable track plate; 10—Track longitudinal adjustment platform; 11—Chain clamp track; 12—Longitudinal sliding track; 13—Transverse sliding track; 14—Magnetic clamp; 15—Strong magnetic block; 16—Chain clamp; 17—Grammeter ruler. Detailed Implementation

[0024] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0025] The components of the embodiments of the invention described and shown in the accompanying drawings can typically be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0026] Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this invention.

[0027] In the description of the invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0029] like Figure 1-3 As shown: A transverse stretching inlet device for lithium battery separators includes an inlet sprocket 1, an inlet shear roller 2 and a correction sensor 3, and a chain clamp track 11. The unpowered inlet sprocket 1, inlet shear roller 2, correction sensor 3, and chain clamp track 11 are respectively mounted on a longitudinal adjustment platform 10. The chain teeth on the inlet sprocket 1 extend into the hollow area on the chain clamp track 11, and the chain clamps 16 on the chain clamp track 11 can drive the inlet sprocket 1. The chain clamp track 11 at the inlet sprocket 1 is connected to the chain clamp track 11 at the outlet sprocket 1 through an extendable track plate 9. The longitudinal adjustment platform 10 is mounted on a transverse adjustment platform 7 of the sprocket 10 and can move longitudinally linearly relative to the transverse adjustment platform 7 of the sprocket 10. The transverse adjustment platform 7 of the sprocket 10 is driven by a linear motor 5. The linear motor 5 can drive the transverse adjustment platform 7 of the sprocket 10 to move laterally linearly to move closer to or away from the separator. The grating ruler 17 configured on the linear motor 5 can accurately feedback the displacement at the output end of the linear motor 5.

[0030] A further optimized technical solution is as follows: A linear motor 5 is fixedly mounted on the inlet bracket 6. Transverse sliding rails 13 are arranged on both sides of the linear motor 5. A sliding seat at the bottom of the sprocket disc transverse adjustment platform 7 is correspondingly embedded in the transverse sliding rails 13. The output end of the linear motor 5 is fixedly connected to the sliding seat at the bottom of the sprocket disc transverse adjustment platform 7. A longitudinal sliding rail 12 is arranged on the sprocket disc transverse adjustment platform 7. A sliding seat at the bottom of the track longitudinal adjustment platform 10 is correspondingly embedded in the longitudinal sliding rail 12. The piston rod end of the tensioning cylinder 8 is fixedly connected to the track longitudinal adjustment platform 10. A fixed seat is provided at the bottom of one end of the track longitudinal adjustment platform 10, and this fixed seat is used to fix the piston rod end of the tensioning cylinder 8. The tensioning cylinder 8 is fixedly mounted on the sprocket disc transverse adjustment platform 7. A wire displacement sensor 4 connected to the sprocket disc transverse adjustment platform 7 is provided at the bottom of the other end of the track longitudinal adjustment platform 10. An inlet shear roller 2 and a correction sensor 3 are provided at the top of the other end of the track longitudinal adjustment platform 10, with the inlet shear roller 2 located inside the correction sensor 3.

[0031] A further optimized technical solution is as follows: a magnetic clamp 14 is configured at the inlet side end of the inlet sprocket 1. The magnetic clamp 14 is installed on the piston rod end of the end cylinder. Both the magnetic clamp 14 and the end cylinder are fixed on the frame, rather than on the inlet sprocket 1. The position of the strong magnetic block 15 on the magnetic clamp 14 can be adjusted. Example

[0032] This invention provides a lateral stretching inlet device for lithium battery separators, such as... Figure 1-3 As shown, the inlet sprocket 1 is fixed on the longitudinal adjustment platform 10 of the track. The chain clamp track 11 fixedly installed on the longitudinal adjustment platform 10 is connected to the extendable track plate 9 by an H-shaped and T-shaped track plate interlocking structure. The H-shaped and T-shaped track plate interlocking structure can strengthen the structure and ensure that the track surface is relatively flat to facilitate the operation of the chain clamp. The longitudinal adjustment platform 10 of the track is controllably connected to the transverse adjustment platform 7 of the sprocket through the longitudinal sliding track 12. The end tensioning cylinder 8 set on the transverse adjustment platform 7 of the sprocket pushes the longitudinal adjustment platform 10 of the track to move longitudinally and adjust its position by extension and retraction, so as to tension the chain clamp track 11. A wire displacement sensor 4 is connected between the longitudinal adjustment platform 10 and the lateral adjustment platform 7 of the sprocket disc to detect whether the chain clamp track 11 has reached the tension position. The lateral adjustment platform 7 of the sprocket disc is connected to the inlet support 6 through the lateral sliding guide rail 13. The linear motor 5 is installed on the inlet support 6, and the output end of the linear motor 5 is connected to the lateral adjustment platform 7 of the sprocket disc. Under the action of the linear motor 5, the lateral adjustment platform 7 of the sprocket disc can drive the longitudinal adjustment platform 10 and the inlet sprocket disc 1 to move laterally. The moving distance is adjusted according to the real-time detection of the inlet correction sensor 3 and the precise positioning of the current position with the help of the grating ruler 17. The inlet shear roller 2 assists in flattening the membrane surface, which is beneficial for the correction sensor 3 to detect the edge of the diaphragm. The magnetic clamp 14 set at the inlet end can guide the clamp handle of the chain clamp 16 to close by adjusting the position of the strong magnetic block 15. The magnetic clamp 14 can be extended and retracted by the end cylinder.

[0033] When using the lateral stretching inlet device for lithium battery separators provided by this invention.

[0034] The transverse stretching inlet devices for lithium battery separators provided by this invention are arranged in pairs on both sides of the separator and are respectively matched with corresponding transverse stretching outlet devices, such as... Figure 5 As shown.

[0035] Before use, adjust the position of the longitudinal adjustment platform 10. If the chain clamp track 11 needs to be tightened, the tensioning cylinder 8 will be pushed out to move the longitudinal adjustment platform 10 forward. At this time, the extendable track plate 9 will be stretched. The pull wire displacement sensor 4 will detect the longitudinal movement distance of the longitudinal adjustment platform 10. After reaching the required position, the tensioning cylinder 8 will stop moving.

[0036] During use, such as Figure 4 As shown, the correction sensor 3 will detect the edge of the current diaphragm in real time and adjust the position of the chain clamp 16 as needed:

[0037] ① When there is no diaphragm inside the correction sensor 3 (e.g.) Figure 4 The top image shows that the diaphragm width has decreased and the chain clamp 16 cannot clamp the diaphragm. At this time, the linear motor 5 will drive the sprocket disc to move the lateral adjustment platform 7 towards the diaphragm, so that the chain clamp 16 moves closer to the diaphragm and ensures that the chain clamp 16 can clamp the diaphragm.

[0038] ② When there is a diaphragm inside the correction sensor 3, but the position is biased towards the inside of the correction sensor 3, it indicates that the current diaphragm width has increased and the chain clamp 16 has clamped too much diaphragm. At this time, the linear motor 5 will drive the sprocket disc to move the lateral adjustment platform 7 away from the diaphragm.

[0039] ③ When the correction sensor 3 has a diaphragm (such as...) Figure 4 The three images below (from top to bottom: slightly outward, center, and slightly inward) show the diaphragm shifting within the detection range of the correction sensor 3, but not in the center position. The correction sensor 3 determines the diaphragm position and, in conjunction with the grating ruler 17, provides real-time feedback on the position of the linear motor 5. This determines the amount of movement at the output of the linear motor 5, thereby precisely controlling the displacement of the sprocket disc's lateral adjustment platform 7. This ensures that the edge of the diaphragm remains centered, resulting in stable clamping and preventing detachment.

[0040] The transverse stretching inlet device provided by this invention operates extremely smoothly with no toothed effect, extremely fast dynamic response speed, and low inertia. Combined with a grating ruler, it achieves high-precision position control, enabling rapid and accurate positioning during correction actions, improving the stability of the correction function, reducing the probability of film breakage and declamping on the production line, thereby improving production efficiency.

[0041] The above embodiments are merely illustrative of the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the technical solutions of the embodiments of the present invention. Technologies not covered in this invention can all be implemented using existing technologies.

Claims

1. A transverse stretching inlet device for lithium battery separators, comprising an inlet sprocket (1), an inlet shear roller (2) and a correction sensor (3), and a chain clamp track (11), characterized in that: The non-powered inlet sprocket (1), inlet shear roller (2), correction sensor (3), and chain clamp track (11) are respectively installed on the longitudinal adjustment platform (10). The chain teeth on the inlet sprocket (1) extend into the hollow area on the chain clamp track (11), and the chain clamp (16) on the chain clamp track (11) can drive the inlet sprocket (1). The longitudinal adjustment platform (10) is installed on the lateral adjustment platform (7) of the sprocket and can move longitudinally in a straight line relative to the lateral adjustment platform (7). The lateral adjustment platform (7) of the sprocket is driven by a linear motor (5). The linear motor (5) can drive the lateral adjustment platform (7) of the sprocket to move laterally in a straight line to get closer to or away from the diaphragm. The linear motor (5) is fixedly installed on the inlet bracket (6). A transverse sliding rail (13) is arranged on both sides of the linear motor (5). The sliding seat at the bottom of the sprocket disc transverse adjustment platform (7) is correspondingly embedded in the transverse sliding rail (13). The output end of the linear motor (5) is fixedly connected to the sliding seat at the bottom of the sprocket disc transverse adjustment platform (7). The sprocket disc transverse adjustment platform (7) is provided with a longitudinal sliding rail (12), and the sliding seat at the bottom of the longitudinal adjustment platform (10) is correspondingly embedded in the longitudinal sliding rail (12). The piston rod end of the tensioning cylinder (8) is fixedly connected to the longitudinal adjustment platform (10). A wire displacement sensor (4) is provided at the bottom of the other end of the longitudinal adjustment platform (10) of the track, and the wire displacement sensor (4) is connected to the lateral adjustment platform (7) of the sprocket disc.

2. The transverse stretching inlet device for lithium battery separators according to claim 1, characterized in that: The track longitudinal adjustment platform (10) has a fixed base at one end, which is used to fix the piston rod end of the tension cylinder (8). The tension cylinder (8) is fixedly installed on the sprocket disc transverse adjustment platform (7).

3. The transverse stretching inlet device for lithium battery separators according to claim 1, characterized in that: The other end of the longitudinal adjustment platform (10) is provided with an inlet shear roller (2) and a correction sensor (3), and the inlet shear roller (2) is located inside the correction sensor (3).

4. The transverse stretching inlet device for lithium battery separators according to claim 1, characterized in that: The linear motor (5) is equipped with a grating ruler (17), which can accurately feed back the displacement of the output end of the linear motor (5).

5. The transverse stretching inlet device for lithium battery separators according to claim 1, characterized in that: The chain clamp track (11) at the inlet sprocket (1) is connected to the chain clamp track (11) at the outlet sprocket via an extendable track plate (9).

6. The transverse stretching inlet device for lithium battery separators according to claim 5, characterized in that: The extendable track plate (9) and the chain clamp track (11) are connected by an H-shaped and T-shaped track plate interlocking structure.

7. The transverse stretching inlet device for lithium battery separators according to claim 1, characterized in that: The inlet sprocket (1) is provided with a magnetic clamp (14) at the inlet side end, and the magnetic clamp (14) is installed on the piston rod end of the end cylinder; and the position of the strong magnetic block (15) on the magnetic clamp (14) can be adjusted.

Images