Clamping device for diaphragm production

Abstract

The invention discloses a clamping device for diaphragm production, and belongs to the technical field of lithium battery diaphragm processing. Comprising a clamp body, two fixing lugs are symmetrically arranged at the upper end of one side of the clamp body, a sleeve is rotationally arranged between the two fixing lugs, a movable clamping plate inclining inwards is arranged at the lower end of the sleeve, and a lower clamping plate corresponding to the movable clamping plate is fixedly arranged at the lower end of the front side of the clamp body; the contact clamping face of the movable clamping plate and the lower clamping plate is located on the inner side of the rotating center of the sleeve, a stress handle is arranged at the upper end of the sleeve, and an elastic assembly is arranged between the sleeve and the clamp body. The diaphragm clamping device is simple in structure and scientific and reasonable in design, the structure of a traditional diaphragm clamping claw is optimized, thrust assistance of structures such as an air cylinder is not needed, the effect that the diaphragm is pulled more and more tightly can be achieved in the clamping closing state, the problem of diaphragm clamping disengaging is avoided, the movable clamping plate can be stably in the clamping opening and clamping closing state, and the working performance is stable.

Description

Technical Field

[0001] The present invention relates to the technical field of lithium battery separator processing, and specifically to a clamping device for separator production. Background Art

[0002] The main function of the separator in battery materials is to isolate the positive and negative electrodes to prevent problems such as self-discharge and short circuit of the battery. The main material used is a porous polymer membrane, including polyethylene (PE) or polypropylene (PP), so it is also called polyethylene film or PE film. With the gradual popularization of new energy vehicles, the future demand for power lithium battery materials will continue to grow. A lithium battery consists of positive and negative electrodes, an electrolyte, and a polymer separator membrane. The separator is a high-value-added material with the highest technical barrier among lithium battery materials.

[0003] Before the separator is wound up, it is necessary to stretch the separator horizontally to avoid problems such as wrinkles when the separator is wound up, so as to ensure the processing quality of the separator. The existing separator clamping claws are unstable during use and rely on structures such as cylinders and electric push rods to drive the claw hands to clamp the separator. The structure is complex, and the problem of separator falling off is likely to occur, making it inconvenient to use.

[0004] Therefore, we have designed and developed a new type of separator clamping device. Through scientific and reasonable design, without the need for external forces provided by structures such as cylinders, the effect of getting tighter as it is pulled can be achieved under the action of the lateral tension of the film, effectively avoiding the problem of separator de-clamping. Summary of the Invention

[0005] The purpose of the present invention is to provide a clamping device for separator production to solve the problems raised in the above background art.

[0006] To achieve the above purpose, the present invention provides the following technical solutions: A clamping device for separator production includes a clamping body. On the upper end of one side of the clamping body, two fixing ears are symmetrically arranged. A sleeve is rotatably arranged between the two fixing ears. An inwardly inclined movable clamping plate is arranged at the lower end of the sleeve. A lower clamping plate corresponding to the movable clamping plate is fixedly arranged at the lower end of the front side of the clamping body. The contact clamping surface between the movable clamping plate and the lower clamping plate is located inside the rotation center of the sleeve. A force-bearing handle is arranged at the upper end of the sleeve, which is used to drive the sleeve and the movable clamping plate to rotate when a force is applied. A elastic force component is arranged between the sleeve and the clamping body to enable the movable clamping plate to stably be in the open-clamping or closed-clamping state.

[0007] As a further preferred solution of the present invention: The elastic force component includes a stop pin, a spring sleeve, and a spring. The stop pin is arranged on the clamping body. One end of the spring sleeve is hinged to the sleeve, and the other end is provided with a movable stop opening. The stop pin passes through the movable stop opening and can rotate and slide relative to the movable stop opening. The spring is arranged inside the spring sleeve, and one end of the spring contacts the stop pin.

[0008] As a further preferred solution of the present invention: Two fixing seats are symmetrically arranged on the side wall of the clamping body, and the retaining pin is rotatably arranged between the two fixing seats.

[0009] As a further preferred solution of the present invention: A rotating shaft is rotatably arranged between the two fixing ears, and the sleeve is sleeved on the rotating shaft and rotatably connected to the rotating shaft.

[0010] Compared with the prior art, the beneficial effects of the present invention are: By applying force to the force-receiving handle of this clamping device, the movable clamping plate can quickly contact the lower clamping plate to achieve the closed clamping state and clamp the diaphragm. By designing the contact clamping surface and the rotation center as a misaligned structure, under the action of the transverse tension of the diaphragm, the greater the pulling force generated by the diaphragm on the movable clamping plate, the tighter the movable clamping plate clamps, effectively avoiding the problem of diaphragm de-clamping, and there is no need for external structures such as cylinders to provide thrust to the clamping plate, optimizing the structure of the gripper; By designing the elastic force component, firstly, it can cooperate with the force-receiving handle to make the movable clamping plate quickly contact or separate from the lower clamping plate, enabling it to quickly complete the closed clamping or open clamping state, quickly complete the clamping or loosening of the diaphragm, and smoothly enter the next process; secondly, under the action of the spring, it can ensure that the movable clamping plate is stably in the closed clamping or open clamping state. Without external force, due to the misaligned design of the movable clamping opening, when it is in the open clamping state, it is always affected by the force of the spring, keeping it in the open state all the time, preventing the clamping device from closing during the return stroke, and ensuring the stability of the work.

[0011] In summary, this diaphragm clamping device has a simple structure, is scientifically and reasonably designed, optimizes the structure of the traditional diaphragm clamping gripper, does not require the thrust assistance of structures such as cylinders, can achieve the effect of clamping the diaphragm tighter and tighter in the closed clamping state, avoids the problem of diaphragm de-clamping, and the movable clamping plate can be stably in the open clamping and closed clamping states, with stable working performance. Brief Description of the Drawings

[0012] Figure 1 It is a three-dimensional structure schematic diagram of the clamping device for diaphragm production of the present invention; Figure 2 It is a cross-sectional structure schematic diagram of the clamping device for diaphragm production of the present invention when in the closed clamping state; Figure 3 It is a cross-sectional structure schematic diagram of the elastic force component of the clamping device for diaphragm production of the present invention; Figure 4 It is a side view structure schematic diagram of the clamping device for diaphragm production of the present invention when in the closed clamping state; Figure 5 It is a cross-sectional structure schematic diagram of the clamping device for diaphragm production of the present invention when in the open clamping state; Figure 6Schematic diagram of the actual application state when the clamping device for diaphragm production of the present invention is in the closed state; Figure 7 Schematic diagram of the actual application state when the clamping device for diaphragm production of the present invention is in the open state.

[0013] In the figure: 1, clamping body; 2, lower clamping plate; 3, fixed ear; 4, rotating shaft; 5, sleeve; 6, movable clamping plate; 7, force-bearing handle; 8, fixed seat; 9, retaining pin; 10, spring sleeve; 11, spring; 12, rotation center; 13, contact clamping surface; 14, diaphragm; 15, movable notch. Embodiment

[0014] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention. Example

[0015] Please refer to Figure 1-7 , this embodiment provides a clamping device for diaphragm production, including a clamping body 1. Two fixed ears 3 are symmetrically arranged at the upper end of one side of the clamping body 1. A sleeve 5 is rotatably arranged between the two fixed ears 3. Specifically, a rotating shaft 4 is rotatably arranged between the two fixed ears 3. The sleeve 5 is sleeved on the rotating shaft 4 and is rotatably connected to the rotating shaft 4. As a conventional design familiar to those skilled in the art, in actual application, both sides of the sleeve 5 are in contact with and rotatably connected to the fixed ears 3, and the fixed ears 3 play a role in laterally limiting the sleeve 5; an inwardly inclined movable clamping plate 6 is arranged at the lower end of the sleeve 5. A lower clamping plate 2 corresponding to the movable clamping plate 6 is fixedly arranged at the lower end of the front side of the clamping body 1. The contact clamping surface 13 between the movable clamping plate 6 and the lower clamping plate 2 is located inside the rotation center 12 of the sleeve 5. As Figure 4 shown, that is, the rotation center 12 is misaligned with the contact clamping surface 13. When the movable clamping plate 6 clamps the diaphragm 14 with the lower clamping plate 2 in the closed state, when the self-tension of the diaphragm 14 pulls the movable clamping plate 6 outward, due to the misalignment between the rotation center 12 and the contact clamping surface 13, the clamping effect between the movable clamping plate 6 and the lower clamping plate 2 can be better, avoiding the problem of the diaphragm 14 being unclamped. A force-bearing handle 7 is arranged at the upper end of the sleeve 5. When the force-bearing handle 7 is stressed, it is used to drive the sleeve 5 and the movable clamping plate 6 to rotate, realizing the conversion between the open state and the closed state.

[0016] In order to ensure that the movable clamping plate 6 can be stably in the open or closed state, as Figure 1 , Figure 2 , Figure 3 and Figure 5As shown, an elastic component is provided between the sleeve 5 and the clamping body 1. The elastic component includes a retaining pin 9, a spring sleeve 10, and a spring 11. The retaining pin 9 is provided on the clamping body 1. Preferably, two fixing seats 8 are symmetrically provided on the side wall of the clamping body 1. The retaining pin 9 is rotatably arranged between the two fixing seats 8. One end of the spring sleeve 10 is hinged to the sleeve 5, and the other end is provided with a movable notch 15. The retaining pin 9 passes through the movable notch 15 and can rotate and slide relative to the movable notch 15. The spring 11 is arranged inside the spring sleeve 10, and one end of the spring 11 contacts the retaining pin 9.

[0017] To enable those skilled in the art to better understand the present application, the working principle of this clamping device will be clearly described below: As Figure 1 , Figure 2 , Figure 4 and Figure 6 shown, the clamping device is in the closed clamping state. At this time, the movable clamping plate 6 is at the lowest point and contacts the lower clamping plate 2. In practical applications, as Figure 6 shown, clamping devices are required on both sides of the diaphragm 14 to clamp the diaphragm 14. At this time, the states of the spring sleeve 10 and the spring 11 are as Figure 2 shown. One end of the spring 11 abuts against the retaining pin 9, applying an obliquely downward force to the spring sleeve 10, causing the spring sleeve 10 to press the movable clamping plate 6 obliquely downward, ensuring the stability of the movable clamping plate 6; When it is necessary to loosen the diaphragm 14, as Figure 5 and Figure 7 shown, by pushing the force-receiving handle 7 forward, the sleeve 5 drives the movable clamping plate 6 to rotate backward. The movable clamping plate 6 leaves the lower clamping plate 2, and the clamping device loosens the diaphragm 14. At this time, the spring sleeve 10 and the spring 11 are as Figure 5 shown. At this time, the spring 11 applies an obliquely upward force to the sleeve 5 through the spring sleeve 10, enabling the movable clamping plate 5 to be stably in the open clamping state; When it is necessary to clamp the diaphragm 14 again, just push the force-receiving handle 7 backward to make the movable clamping plate 6 drop.

[0018] It should be noted that the pushing of the force-receiving handle 7 can be realized by existing structures such as a rotating cam, which is a general structure familiar to those skilled in the art and will not be elaborated in this application.

[0019] It should be noted that the above embodiments only specifically and clearly describe the technical solutions and technical features of this application. For those skilled in the art, the solutions or features that belong to the prior art or common general knowledge are not described in detail in the above embodiments.

[0020] In addition, the technical solutions of this application are not limited to the above embodiments. Those skilled in the art should take the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A clamping device for diaphragm production, comprising a clamping body (1), characterized in that, On one side of the clamping body (1) at the upper end, two fixing ears (3) are symmetrically arranged. A sleeve (5) is rotatably arranged between the two fixing ears (3). An inwardly inclined movable clamping plate (6) is arranged at the lower end of the sleeve (5). A lower clamping plate (2) corresponding to the movable clamping plate (6) is fixedly arranged at the lower end of the front side of the clamping body (1). The contact clamping surface (13) of the movable clamping plate (6) and the lower clamping plate (2) is located inside the rotation center (12) of the sleeve (5). A force-receiving handle (7) is arranged at the upper end of the sleeve (5). When the force-receiving handle (7) is stressed, it is used to drive the sleeve (5) and the movable clamping plate (6) to rotate. A elastic force component is arranged between the sleeve (5) and the clamping body (1) to enable the movable clamping plate (6) to be stably in the open-clamping or closed-clamping state.

2. The clamping device for diaphragm production according to claim 1, characterized in that, The elastic force component includes a stop pin (9), a spring sleeve (10) and a spring (11). The stop pin (9) is arranged on the clamping body (1). One end of the spring sleeve (10) is hinged to the sleeve (5), and an activity notch (15) is arranged at the other end. The stop pin (9) passes through the activity notch (15) and can relatively rotate and relatively slide with the activity notch (15). The spring (11) is arranged in the spring sleeve (10), and one end of the spring (11) contacts the stop pin (9).

3. The clamping device for diaphragm production according to claim 2, characterized in that, Two fixing seats (8) are symmetrically arranged on the side wall of the clamping body (1). The stop pin (9) is rotatably arranged between the two fixing seats (8).

4. The clamping device for diaphragm production according to claim 1, wherein, A rotating shaft (4) is rotatably arranged between the two fixing ears (3). The sleeve (5) is sleeved on the rotating shaft (4) and is rotatably connected to the rotating shaft (4).

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