Cut-off machine for online continuous cutting of battery casings

Abstract

The utility model relates to a kind of cutting-off machine for online continuous cutting battery shell, including rack, trolley mechanism and cutting mechanism. Among them, trolley mechanism includes sliding part and the driving part connected with sliding part, and driving part is used to drive sliding part to advance or retreat.Cutting mechanism is installed to sliding part, and cutting mechanism includes fly-knife servo motor, blade variable-diameter cam, spline shaft, rotating arm, tool holder, knife body and cam follower, the rotating shaft of fly-knife servo motor is fixedly connected with spline shaft, spline shaft is arranged in blade variable-diameter cam and rotating arm, and is connected with blade variable-diameter cam by bearing, spline shaft is fixedly connected with rotating arm, rotating arm is equipped with round hole, one end of cam follower is fixedly connected with tool holder, the other end of cam follower is arranged in round hole, and is slidably connected with cam slide groove of blade variable-diameter cam, the hole wall of round hole and the outer periphery of cam follower are arranged in clearance, and knife body is fixedly connected with tool holder.

Description

Technical Field

[0001] This utility model relates to the field of battery casing cutting technology, specifically to a cutting machine for online continuous cutting of battery casings. Background Technology

[0002] In existing product technologies, when continuously cutting (aluminum, stainless steel) battery casings online, the aspect ratio of rectangular battery casings is becoming increasingly larger, making online cutting difficult. Problems such as collapse and deformation of the cut surface are prone to occur, resulting in unmet cutting requirements. This necessitates offline secondary cutting and reshaping, leading to low production efficiency, rapid equipment wear and tear, and high daily maintenance costs, which in turn increases operating costs. Summary of the Invention

[0003] The purpose of this invention is to provide a cutting machine for continuous online cutting of battery casings, so as to at least partially solve the problems existing in the related art.

[0004] To achieve the above objectives, this disclosure provides an online continuous cutting machine for battery casings, comprising: frame; The trolley mechanism includes a sliding part and a driving part connected to the sliding part, the driving part being used to drive the sliding part forward or backward; and A cutting mechanism is installed on the sliding part. The cutting mechanism includes a fly knife servo motor, a blade diameter-changing cam, a spline shaft, a rotating arm, a tool holder, a tool body, and a cam follower. The rotating shaft of the fly knife servo motor is fixedly connected to the spline shaft. The spline shaft passes through the blade diameter-changing cam and the rotating arm, and is connected to the blade diameter-changing cam through a bearing. The spline shaft is fixedly connected to the rotating arm. The rotating arm has a circular hole. One end of the cam follower is fixedly connected to the tool holder. The other end of the cam follower passes through the circular hole and is slidably connected to the cam groove of the blade diameter-changing cam. The wall of the circular hole and the outer periphery of the cam follower are separated by a gap. The tool body is fixedly connected to the tool holder.

[0005] Optionally, the cutting mechanism further includes a die holder and a movable die holder. The movable die holder is connected to the die holder on the side near the cam follower. The movable die holder has a battery through hole in the front-rear direction. The battery case to be cut is placed on the production line and passes through the battery through hole. The movable die holder has a clearance position in the left-right direction that communicates with the battery hole. The clearance position is used to avoid the cutting movement of the die body.

[0006] Optionally, the cam slide groove includes a straight slide groove and an annular slide groove connected to both ends of the straight slide groove, wherein the straight slide groove is formed on the side of the blade diameter-changing cam near the moving die holder.

[0007] Optionally, the shaft hole of the rotating arm is eccentrically set.

[0008] Optionally, the sliding part includes a slider and two frames. The frame is provided with a slide rail. The slider is slidably connected to the slide rail. The two frames are installed on the slider with a front-to-back gap. The die fixing seat, the blade diameter changing cam, and the moving die holder are located between the two frames. The spline shaft passes through the two frames and is connected to the frames through a bearing.

[0009] Optionally, the drive unit includes a trolley servo motor, a crank, and a connecting rod. The trolley servo motor is fixed to the frame, and the rotation shaft of the trolley servo motor is connected to one end of the crank. The other end of the crank is connected to the connecting rod. The other end of the connecting rod passes through the frame near the flying knife servo motor in one of the two frames and is connected to the die holder.

[0010] The technical solutions provided by the embodiments of this disclosure may include the following beneficial effects: Online cutting refers to the continuous output of tubes from the battery casing conveyor line. In this scenario, the cutting machine follows the production line speed, cutting the casing as it moves. The trolley mechanism moves back and forth to ensure the blade moves at the same speed as the conveyor line when cutting the battery casing, achieving continuous online cutting. The blade must maintain the same speed as the tube in the direction of movement to avoid collisions. When cutting the battery casing, the fly knife servo motor drives the rotating arm via a splined shaft. This causes the blade holder to move within the circular hole of the rotating arm under centrifugal force, and also to slide along the cam groove of the blade's variable diameter cam. This process automatically changes the blade's trajectory when cutting (aluminum, stainless steel) battery casings, ensuring the blade tip is at an ideal cutting position when cutting battery casings with large length-to-width ratios. This eliminates the need for secondary offline cutting and shaping, ensuring lower operating costs. Because of its non-stop synchronous cutting, high-speed rotary cutting, adjustable cutting point, and automatic blade trajectory diameter change design, the cutting quality and production efficiency of battery casings of different sizes (aluminum, stainless steel) are guaranteed. Attached Figure Description

[0011] Figure 1 This is an isometric view of a cutting machine for continuously cutting battery casings online, according to an exemplary embodiment of the present disclosure.

[0012] Figure 2 This is an exploded view of a cutting mechanism in a cutting machine for continuously cutting battery casings online, according to an exemplary embodiment of this disclosure.

[0013] Explanation of reference numerals: 1. Rack; 2. Cart mechanism; 21. Slider; 22. Frame; 23. Cart servo motor; 25. Connecting rod; 3. Cutting mechanism; 31. Flying knife servo motor; 32. Blade diameter changing cam; 321. Straight slide groove; 322. Circular slide groove; 33. Splined shaft; 34. Rotary arm; 341. Circular hole; 35. Tool holder; 36. Tool body; 37. Cam follower; 38. Die holder; 39. Moving die holder; 391. Battery through hole; 392. Clearance position; 100. Battery casing. Detailed Implementation

[0014] The specific embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this disclosure.

[0015] In this disclosure, unless otherwise stated, directional terms such as "upper," "lower," "front," "rear," "left," and "right" are used for ease of description based on the drawing orientations of the corresponding figures, while "inner" and "outer" are defined based on the contours of the corresponding components themselves. Terms such as "first" and "second" used in this disclosure are used to distinguish one element from another and do not have sequential or importance implications. Furthermore, when the following description refers to the figures, unless otherwise indicated, the same numbers in different figures represent the same or similar elements.

[0016] Cutting the battery casing with a cutting machine is one of the processes in battery casing tubing manufacturing. Battery casing tubing manufacturing involves rolling aluminum strips into rectangular tubes, and then welding the seams of the aluminum strips together using a high-frequency welding machine to achieve a closed rectangular tube. This tubing manufacturing process is continuous. The cutting machine cuts the continuous tubes into short tubes of fixed lengths required by the customer to meet the usage requirements of subsequent processes.

[0017] Please see Figure 1 and Figure 2This disclosure provides an online continuous cutting machine for battery casings, including a frame 1, a trolley mechanism 2, and a cutting mechanism 3. The trolley mechanism 2 includes a sliding part and a drive part connected to the sliding part, the drive part being used to drive the sliding part forward or backward. The cutting mechanism 3 is mounted on the sliding part. The cutting mechanism 3 includes a fly knife servo motor 31, a blade diameter changing cam 32, a spline shaft 33, a rotating arm 34, a tool holder 35, a tool body 36, and a cam follower 37. The rotating shaft of the fly knife servo motor 31 is fixedly connected to the spline shaft 33. The spline shaft 33 passes through the blade diameter changing cam 32 and the rotating arm 34, and is connected to the blade diameter changing cam 32 through a bearing. The spline shaft 33 is fixedly connected to the rotating arm 34. The rotating arm 34 is provided with a circular hole 341. One end of the cam follower 37 is fixedly connected to the tool holder 35. The other end of the cam follower 37 passes through the circular hole 341 and is slidably connected to the cam groove of the blade diameter changing cam 32. The hole wall of the circular hole 341 and the outer periphery of the cam follower 37 are provided with a gap. The tool body 36 is fixedly connected to the tool holder 35.

[0018] Understandably, "online" means that the battery casing 100 conveyor line is constantly outputting tubes. In this case, the cutting machine follows the speed of the production line and cuts the tubes during its movement. The trolley mechanism 2 moves back and forth so that the blade body 36 can cut the battery casing 100 at the same speed as the tube conveyor line (battery casing 100 conveyor line), achieving the purpose of continuous online cutting. When the blade body 36 cuts the battery casing 100 (tube), it must maintain the same speed as the tube in the direction of movement; otherwise, the blade will collide with the tube. When the battery casing 100 needs to be cut, the fly knife servo motor 31 drives the rotating arm 34 to rotate through the spline shaft 33. Under the action of centrifugal force, the knife holder 35 drives the cam follower 37 to move in the circular hole 341 of the rotating arm 34, and drives the cam follower 37 to slide in the cam groove of the blade diameter changing cam 32. This process makes the running trajectory of the knife body 36 automatically change when cutting (aluminum, stainless steel) battery casing 100, so that the knife tip is in an ideal cutting position when cutting battery casing 100 with a large length-to-width ratio, thereby achieving the purpose of cutting (aluminum, stainless steel) battery casing 100 without the need for offline secondary cutting and shaping, ensuring low operating costs.

[0019] In one embodiment, the cutting mechanism 3 further includes a die fixing seat 38 and a movable die holder 39. The movable die holder 39 is connected to the side of the die fixing seat 38 near the cam follower 37. The movable die holder 39 is provided with a battery through hole 391 in the front-back direction. The battery case 100 to be cut is placed on the production line and passes through the battery through hole 391. The movable die holder 39 is provided with a clearance position 392 in the left-right direction that communicates with the battery hole. The clearance position 392 is used to avoid the cutting movement of the die body 36.

[0020] In one embodiment, the cam slide groove includes a straight slide groove 321 and an annular slide groove 322 connected to both ends of the straight slide groove 321. The straight slide groove 321 is formed on the side of the blade diameter changing cam 32 near the moving die holder 39.

[0021] In one embodiment, the shaft hole of the rotating arm 34 is eccentrically positioned.

[0022] In one embodiment, the sliding part includes a slider 21 and two frames 22. The frame 1 is provided with a slide rail. The slider 21 is slidably connected to the slide rail. The two frames 22 are installed on the slider 21 at intervals. The die fixing seat 38, the blade diameter changing cam 32 and the moving die seat 39 are disposed between the two frames 22. The spline shaft 33 passes through the two frames 22 and is connected to the frames 22 through bearings.

[0023] In one embodiment, the drive unit includes a trolley servo motor 23, a crank, and a connecting rod 25. The trolley servo motor 23 is fixed to the frame 1, and the rotation shaft of the trolley servo motor 23 is connected to one end of the crank. The other end of the crank is connected to the connecting rod 25. The other end of the connecting rod 25 passes through the frame 22 on the side of the two frames 22 closest to the flying knife servo motor 31 and is connected to the die holder 38.

[0024] This invention has been described through embodiments. Those skilled in the art will understand that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of the invention. Furthermore, under the teachings of this invention, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of the invention. Therefore, this invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this invention.

Claims

1. A cutting machine for continuous online cutting of battery casings, characterized in that, include: Rack (1); The trolley mechanism (2) includes a sliding part and a driving part connected to the sliding part, the driving part being used to drive the sliding part forward or backward; and A cutting mechanism (3) is installed on the sliding part. The cutting mechanism (3) includes a fly knife servo motor (31), a blade diameter-changing cam (32), a spline shaft (33), a rotating arm (34), a blade holder (35), a blade body (36), and a cam follower (37). The rotating shaft of the fly knife servo motor (31) is fixedly connected to the spline shaft (33). The spline shaft (33) passes through the blade diameter-changing cam (32) and the rotating arm (34), and is connected to the blade diameter-changing cam (32) through a bearing. The spline shaft (33) is fixedly connected to the rotating arm (34), the rotating arm (34) is provided with a round hole (341), one end of the cam follower (37) is fixedly connected to the tool holder (35), the other end of the cam follower (37) passes through the round hole (341) and is slidably connected to the cam groove of the blade diameter changing cam (32), the hole wall of the round hole (341) and the outer periphery of the cam follower (37) are provided with a gap, and the tool body (36) is fixedly connected to the tool holder (35).

2. The online continuous cutting machine for battery casings according to claim 1, characterized in that, The cutting mechanism (3) further includes a die fixing seat (38) and a moving die seat (39). The moving die seat (39) is connected to the side of the die fixing seat (38) near the cam follower (37). The moving die seat (39) has a battery through hole (391) in the front-back direction. The battery shell (100) to be cut is placed on the production line and passes through the battery through hole (391). The moving die seat (39) has a clearance position (392) in the left-right direction that communicates with the battery through hole. The clearance position (392) is used to avoid the cutting movement of the die body (36).

3. The online continuous cutting machine for battery casings according to claim 2, characterized in that, The cam slide groove includes a straight slide groove (321) and an annular slide groove (322) connected to both ends of the straight slide groove (321). The straight slide groove (321) is opened on the side of the blade diameter changing cam (32) near the moving die holder (39).

4. The online continuous cutting machine for battery casings according to claim 3, characterized in that, The shaft hole of the rotating arm (34) is eccentrically set.

5. The online continuous cutting machine for battery casings according to claim 2, characterized in that, The sliding part includes a slider (21) and two frames (22). The frame (1) is provided with a slide rail. The slider (21) is slidably connected to the slide rail. The two frames (22) are installed on the slider (21) at intervals. The die fixing seat (38), the blade diameter changing cam (32) and the moving die holder (39) are located between the two frames (22). The spline shaft (33) passes through the two frames (22) and is connected to the frame (22) through a bearing.

6. The online continuous cutting machine for battery casings according to claim 5, characterized in that, The drive unit includes a trolley servo motor (23), a crank, and a connecting rod (25). The trolley servo motor (23) is fixed to the frame (1), and the rotation shaft of the trolley servo motor (23) is connected to one end of the crank. The other end of the crank is connected to the connecting rod (25). The other end of the connecting rod (25) passes through the frame (22) of the two frames (22) on the side closer to the flying knife servo motor (31) and is connected to the die holder (38).

Images