Cutting device and laminating machine

Abstract

The utility model relates to a kind of cutting device and lamination machine, cutting device includes cutting mould, drive mechanism, sensor and lifting mechanism.Drive mechanism can drive lifting mechanism and upper die to reciprocate relative to lower die, to realize slice.Upper die reciprocating process will form the signal transmission path of sensor alternately shielding and avoiding position, to cause the signal intensity received by receiving end to be periodic variation, so according to the signal value received by receiving end can indicate the position of upper die relative to lower die.According to the rotation angle of driving motor and the parameter of transmission structure, the relative height of upper die in different positions can be calculated, so the actual cutting depth value is obtained.When there is difference between actual cutting depth and set cutting depth, the lifting mechanism can drive upper die to lift to compensate the difference until actual cutting depth and set cutting depth are consistent.It can be seen that the above cutting device can realize automatic detection and adjustment of cutting depth, and the adjustment is more convenient.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery equipment technology, and in particular to a cutting device and a stacking machine. Background Technology

[0002] Electrode cutting is an essential step in the lamination process. If the cutting depth cannot be maintained at a consistent standard, the quality of the resulting electrodes cannot be guaranteed. The cutting blades in die-cutting machines or integrated cutting and lamination machines have a limited lifespan. After reaching their service life, the cutting edge needs to be ground and repaired, or the blade needs to be replaced. After repairing or replacing the blade, the cutting depth may change, thus requiring adjustment. Currently, adjustments are generally made manually based on trial cuts and dial indicator readings. This adjustment process requires multiple trial cuts, and cutting depth control depends on visual observation and manual operation, making the process cumbersome and difficult. Utility Model Content

[0003] Therefore, it is necessary to provide a cutting device and stacking machine that can easily adjust the cutting depth to address the above problems.

[0004] A cutting device includes a cutting mold, a driving mechanism, a sensor, and a lifting mechanism. The cutting mold includes a lower mold and an upper mold arranged opposite to each other. The driving mechanism includes a driving motor and a transmission structure. The upper mold is installed on the lifting end of the lifting mechanism, and the lifting mechanism is connected to the transmission structure. The sensor includes a receiving end and a transmitting end, and the transmitting end and the receiving end are respectively arranged on opposite sides of the cutting mold.

[0005] In one embodiment, the cutting die further includes a plurality of guide shafts arranged in parallel and a movable plate slidably mounted on the plurality of guide shafts, the upper die being mounted on the movable plate.

[0006] In one embodiment, the transmission structure includes an eccentric shaft and a connecting rod. The eccentric shaft is connected to the drive motor, and the two ends of the connecting rod are respectively connected to the eccentric shaft and the lifting mechanism.

[0007] In one embodiment, the drive motor includes a motor encoder.

[0008] In one embodiment, the sensor is configured as a through-beam fiber optic sensor.

[0009] In one embodiment, a bracket is also included, the drive mechanism further includes a lifting plate, the drive motor is mounted on the bracket, the lifting plate is slidably mounted on the bracket and connected to the transmission structure, and the lifting mechanism is mounted on the lifting plate.

[0010] In one embodiment, the lifting mechanism includes a lifting motor, a lead screw, a wedge block, and a connecting plate. The lead screw is rotatably mounted on the lifting plate and connected to the lifting motor. The connecting plate is slidably mounted on the lifting plate. The wedge block is sleeved on the lead screw and threadedly engaged with the lead screw. The guide slope of the wedge block is slidably connected to the connecting plate.

[0011] In one embodiment, a locking mechanism is also included, which can lock the lead screw to the lifting plate.

[0012] In one embodiment, a dust hood with an opening is also included, and the opening of the dust hood faces the cutting die.

[0013] A stacking machine includes a cutting device as described in any of the above embodiments.

[0014] The aforementioned cutting device and stacking machine utilize a drive mechanism that drives a lifting mechanism and an upper die to reciprocate relative to a lower die, thereby achieving slicing. During the reciprocating movement of the upper die, it alternately blocks and avoids the signal transmission path of the sensor, causing the signal strength received by the receiver to change periodically. Therefore, the position of the upper die relative to the lower die can be indicated based on the received signal value. Furthermore, based on the rotation angle of the drive motor and the parameters of the transmission structure, the relative height of the upper die at different positions can be calculated, thus obtaining the actual cutting depth. When there is a difference between the actual cutting depth and the set cutting depth, the lifting mechanism can drive the upper die to rise or fall to compensate for the difference until the actual cutting depth matches the set cutting depth. Therefore, the aforementioned cutting device can achieve automatic detection and adjustment of the cutting depth, making adjustment more convenient. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a front view of the cutting device in one embodiment of the present invention;

[0017] Figure 2 for Figure 1 Left side view of the cutting device shown;

[0018] Figure 3 for Figure 1 An enlarged schematic diagram of part A in the cutting device shown;

[0019] Figure 4for Figure 2 An enlarged schematic diagram of part B in the cutting device shown. Detailed Implementation

[0020] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0021] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0022] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0023] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0024] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0025] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0026] Please see Figure 1 The present invention provides a cutting device 100. Furthermore, the present invention also provides a stacking machine (not shown), which includes the aforementioned cutting device 100.

[0027] The cutting device 100 can cut electrode strips to obtain electrodes. A stacking machine generally also includes a stacking table and a stacking robot, which can stack the cut electrodes sequentially on the stacking table to produce a battery cell. Of course, the cutting device 100 can also be applied to other fields to slice other materials.

[0028] Please refer to the following: Figure 2 and Figure 3 In one embodiment of the present invention, the cutting device 100 includes a cutting mold 120, a driving mechanism 130, a sensor 140, and a lifting mechanism 150.

[0029] The cutting die 120 includes a lower die 121 and an upper die 122 arranged opposite to each other. The upper die 122 is mounted on the lifting end of the lifting mechanism 150. In actual use, the lower die 121 and the upper die 122 are generally arranged opposite each other in a vertical direction, and the lifting mechanism 150 can drive the upper die 122 to move in a vertical direction, thereby adjusting the relative position of the upper die 122 and the lower die 121. Specifically, the cutting device 100 generally also includes a support bracket 111 and a base 112, with the support bracket 111 located above the base 112. The drive mechanism 130 and the lifting mechanism 150 are both mounted on the support bracket 111, while the sensor 140 and the lower die 122 are mounted on the base 112.

[0030] The drive mechanism 130 includes a drive motor 131 and a transmission structure (not shown). The lifting mechanism 150 is connected to the transmission structure. Therefore, the drive motor 131 can drive the lifting mechanism 150 and the upper mold 122 to reciprocate relative to the lower mold 121 through the transmission structure, thereby enabling the cutting die 120 to perform a cutting operation.

[0031] Please refer to the following: Figure 4 Specifically, in this embodiment, the cutting die 120 further includes multiple guide shafts 123 arranged in parallel and a movable plate 124 slidably mounted on the multiple guide shafts 123. The upper die 122 is mounted on the movable plate 124. The guide shafts 123 can be fixedly mounted to the bracket 111 and the base 112, and the movable plate 124 and each guide shaft 123 can be installed through linear bearings. The guide shafts 123 can limit and guide the upper die 122, thereby significantly improving the stability of the upper die 122 during movement.

[0032] The transmission structure can convert the rotational motion of the drive motor 131 into the reciprocating linear motion of the upper die 122, thereby enabling the cutting die 120 to perform continuous cutting operations. When the lower die 121 and the upper die 122 are separated, the electrode strip to be cut can pass between the lower die 121 and the upper die 122. After the upper die 122 and the lower die 121 are closed, the electrode strip of the required shape can be cut.

[0033] Specifically, in this embodiment, the transmission structure includes an eccentric shaft (not shown) and a connecting rod (not shown). The eccentric shaft is connected to the drive motor 131, and both ends of the connecting rod are respectively connected to the eccentric shaft and the lifting mechanism 150. Specifically, the eccentric shaft can be indirectly connected to the rotating shaft of the drive motor 131 through a coupling, reducer, etc., or it can be directly connected to the rotating shaft of the drive motor 131. The end of the connecting rod away from the eccentric shaft can be directly connected to the lifting mechanism 150, or it can be indirectly connected to the lifting mechanism 150 through a slider or other structure. The drive motor 131 can drive the eccentric shaft to rotate, and the eccentric shaft can drive the connecting rod to swing, thereby driving the lifting mechanism 150 and the upper mold 122 to move linearly back and forth.

[0034] The transmission structure achieved by the eccentric shaft and connecting rod is simple and highly reliable. It should be noted that in other embodiments, the transmission structure can also employ other methods, such as a cam and cam follower working together to convert the rotational motion of the drive motor 131 into reciprocating linear motion.

[0035] Driven by the drive mechanism 130, the upper mold 122 can cycle between the initial state, the mold-closing critical state, the cutting state, the separation critical state, and the initial state relative to the lower mold 121. Specifically, in the initial state, the upper mold 122 moves away from the lower mold 121 to its highest point; in the mold-closing critical state, the upper mold 122 and the lower mold 121 close at the moment of mold-closing; in the cutting state, the upper mold 122 moves to its lowest point relative to the lower mold 121; and in the separation critical state, the upper mold 122 and the lower mold 121 separate at the moment of separation. The distance that the upper mold 122 moves from the mold-closing critical state to the cutting state is the actual cutting depth of the cutting device 100.

[0036] Please refer to it again. Figure 2 and Figure 4 The sensor 140 includes a receiver 141 and a transmitter 142, with the transmitter 142 and receiver 141 respectively disposed on opposite sides of the cutting mold 120. The transmitter 142 can emit signals, and the receiver 141 can receive signals. Furthermore, the cutting mold 120 is disposed on the transmission path of the sensor 140. Specifically, the receiver 141 and transmitter 142 are respectively disposed in the width direction of the cutting mold 120 (i.e.,...). Figure 1 The transmission path is shorter and less susceptible to external interference, as shown on both sides of the plane perpendicular to the drawing.

[0037] When the upper mold 122 is in its initial state, the cutting mold 120 does not obstruct the transmission path, so the receiving end 141 can receive the signal. However, when the upper mold 122 moves to the mold closing critical state, the transmission path is completely blocked, so the receiving end 141 receives the weakest signal, or even zero. When the upper mold 122 moves to the separation critical state, the signal strength received by the receiving end 141 will gradually increase. It can be seen that during the reciprocating movement of the upper mold 122, the signal strength received by the receiving end 141 also changes periodically. Therefore, the position of the upper mold 122 relative to the lower mold 121 can be indicated based on the signal value received by the receiving end 141.

[0038] As analyzed above, the distance the upper die 122 travels from the critical closing state to the cutting-off state is equal to the actual cutting depth. Let h be the distance the upper die 122 travels from the initial state to the zero-boundary closing state, and L be the distance it travels from the initial state to the cutting-off state. Then, the actual cutting depth a' is equal to Lh. Comparing the actual cutting depth a' with the set cutting depth a, if the difference is 0, the actual cutting depth equals the set cutting depth; if there is a difference, denoted as b, it indicates a deviation between the actual and set cutting depths, requiring compensation and correction.

[0039] Since L is determined by the stroke of the drive mechanism 130, L is fixed. For the implementation scheme where the transmission structure includes an eccentric shaft and connecting rod, if the eccentricity of the eccentric shaft is e, then L equals 2e. That is, the actual cutting depth a' equals 2e-h. Therefore, the actual cutting depth a' can be compensated and corrected simply by adjusting h. Specifically, if the actual cutting depth a' is greater than the set cutting depth a, the compensation method is to move the upper die 122 away from the lower die 121 by b through the lifting mechanism 150, thereby increasing h and ultimately reducing the actual cutting depth a'; if the actual cutting depth a' is less than the set cutting depth a, the compensation method is to move the upper die 122 closer to the lower die 121 by b through the lifting mechanism 150, thereby decreasing h and ultimately increasing the actual cutting depth a'.

[0040] The specific analysis is as follows:

[0041] When the signal received by receiver 141 changes from a large value to a minimum value, it indicates that the upper mold 122 has moved to the initial mold-closing state. The position of drive motor 131 at this time is recorded as the first position. When the signal received by receiver 141 gradually increases from its minimum value, it indicates that the upper mold 122 has moved to the separation critical position. The position of drive motor 131 at this time is recorded as the second position. It can be understood that when drive motor 131 moves from the second position to the third position (between the first and third positions), the upper mold 122 is at its highest point relative to the lower mold 121, i.e., the initial state. Based on the angular change of drive motor 131 from the first position to the second position, the angular change of drive motor 131 from the third position to the first position can be obtained. Based on the above angular change and parameters such as the transmission ratio of the transmission structure, the distance that the upper mold 122 moves from the initial state to the mold-closing zero-boundary state can be obtained, denoted as h. By calculating h with the known L, the actual cutting depth can be obtained.

[0042] As can be seen, by monitoring the rotation angle of the drive motor 131 in real time and in conjunction with the sensor 140, the cutting depth can be visualized, allowing for real-time monitoring of whether the actual cutting depth is within the control range. Furthermore, in conjunction with the lifting mechanism 150, the actual cutting depth can be adjusted in real time to ensure that the actual cutting depth remains consistent with the set cutting depth.

[0043] Specifically, in this embodiment, the drive motor 131 includes a motor encoder (not shown). The motor encoder can record the rotation angle of the drive motor 131 in real time, which helps to quickly obtain the operating position of the drive motor 131, thereby quickly obtaining the actual cutting depth.

[0044] Specifically, in this embodiment, the sensor 140 is configured as a through-beam fiber optic sensor 140. The through-beam fiber optic sensor 140 has advantages such as high sensitivity, high accuracy, and strong adaptability, which can ensure the accuracy of the obtained cutting depth.

[0045] Please refer to it again. Figure 1 and Figure 2 In this embodiment, the cutting device 100 further includes a bracket 111, and the drive mechanism 130 further includes a lifting plate 132. The drive motor 131 is mounted on the bracket 111, the lifting plate 132 is slidably mounted on the bracket 111 and connected to the transmission structure, and the lifting mechanism 150 is mounted on the lifting plate 132.

[0046] Specifically, the lifting plate 132 can be mounted on the bracket 111 via guide rails and sliders. The drive motor 131 can drive the lifting plate 132 to slide along the bracket 111 through a transmission structure, thereby driving the lifting mechanism 150 and its upper die 122 to move relative to the lower die 121 to perform the cutting operation. In this way, the stability of the upper die 122 during movement is further improved.

[0047] Furthermore, in this embodiment, the lifting mechanism 150 includes a lifting motor 151, a lead screw 152, a wedge block 153, and a connecting plate 154. The lead screw 152 is rotatably mounted on the lifting plate 132 and connected to the lifting motor 151. The connecting plate 154 is slidably mounted on the lifting plate 132. The wedge block 153 is sleeved on the lead screw 152 and threadedly engaged with it. The guide slope of the wedge block 153 is slidably connected to the connecting plate 154.

[0048] The extension direction of the lead screw 152 is generally perpendicular to the sliding direction of the connecting plate 154. Since the connecting plate 154 typically slides vertically, the lead screw 152 generally extends horizontally. The lifting motor 151 drives the lead screw 152 to rotate, thereby forcing the wedge block 153 to move along the lead screw 152. During the movement of the wedge block 153, its guide slope interacts with the connecting plate 154, forcing the connecting plate 154 to slide relative to the guide slope, thus achieving vertical sliding of the connecting plate 154 and adjusting the relative position of the upper mold 122 and the lower mold 121.

[0049] The wedge block 153 converts the long horizontal stroke into a short vertical stroke of the connecting plate 154. Moreover, the wedge block 153 has a small angle on its guide slope and a strong load-bearing capacity in the vertical direction, thus improving the stability of the upper die 122's position. Once the upper die 122 is adjusted to its position relative to the lower die 121, its position is not easily changed, thereby maintaining a stable depth of cut.

[0050] Furthermore, in this embodiment, the cutting device 100 also includes a locking mechanism 170, which can lock the lead screw 152 to the lifting plate 132. The locking mechanism 170 can be a retaining ring fixed to the lifting plate 132, with one end of the lead screw 152 passing through the retaining ring. Moreover, the retaining ring can clamp and lock the lead screw 152 so that the lead screw 152 cannot rotate. In this way, after the upper die 122 is adjusted into place, the lead screw 152 can be locked, and the position of the upper die 122 relative to the lower die 121 will not change, thereby preventing changes in the cutting depth during operation.

[0051] It should be noted that in other embodiments, the lifting mechanism 150 may also adopt other structures. For example, the lifting mechanism 150 may be an electric cylinder; or, the lifting mechanism 150 may directly adopt a motor threaded screw pair structure, and the extension direction of its screw is consistent with the sliding direction of the connecting plate 154.

[0052] Furthermore, in this embodiment, the cutting device 100 also includes a dust suction hood 180 with an opening, the opening of which faces the cutting mold 120. The dust suction hood 180 can be connected to an external dust suction device via a pipe. During the cutting operation, the dust generated during cutting can be quickly sucked away by the dust suction hood 180, thereby helping to improve the quality of the slices.

[0053] The aforementioned cutting device 100 and stacking machine, with drive mechanism 130 driving lifting mechanism 150 and upper die 122 to reciprocate relative to lower die 121, thereby achieving slicing. During the reciprocating movement of upper die 122, it alternately blocks and avoids the signal transmission path of sensor 140, causing the signal strength received by receiver 141 to change periodically. Therefore, the position of upper die 122 relative to lower die 121 can be indicated based on the signal value received by receiver 141. Furthermore, based on the rotation angle of drive motor 131 and the parameters of the transmission structure, the relative height of upper die 122 at different positions can be calculated, thus obtaining the actual cutting depth value. When there is a difference between the actual cutting depth and the set cutting depth, the upper die 122 can be raised and lowered by lifting mechanism 150 to compensate for the difference until the actual cutting depth matches the set cutting depth. Therefore, the aforementioned cutting device 100 can achieve automatic detection and adjustment of cutting depth, making adjustment more convenient.

[0054] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0055] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A cutting device, characterized in that, The device includes a cutting mold, a drive mechanism, a sensor, and a lifting mechanism. The cutting mold includes a lower mold and an upper mold arranged opposite to each other. The drive mechanism includes a drive motor and a transmission structure. The upper mold is installed on the lifting end of the lifting mechanism, and the lifting mechanism is connected to the transmission structure. The sensor includes a receiving end and a transmitting end, and the transmitting end and the receiving end are respectively arranged on opposite sides of the cutting mold.

2. The cutting device according to claim 1, characterized in that, The cutting die also includes a plurality of guide shafts arranged in parallel and a movable plate slidably mounted on the plurality of guide shafts, with the upper die mounted on the movable plate.

3. The cutting device according to claim 1, characterized in that, The transmission structure includes an eccentric shaft and a connecting rod. The eccentric shaft is connected to the drive motor, and the two ends of the connecting rod are respectively connected to the eccentric shaft and the lifting mechanism.

4. The cutting device according to claim 1, characterized in that, The drive motor includes a motor encoder.

5. The cutting device according to claim 1, characterized in that, The sensor is configured as a through-beam fiber optic sensor.

6. The cutting device according to any one of claims 1 to 5, characterized in that, It also includes a bracket, the drive mechanism includes a lifting plate, the drive motor is mounted on the bracket, the lifting plate is slidably mounted on the bracket and connected to the transmission structure, and the lifting mechanism is mounted on the lifting plate.

7. The cutting device according to claim 6, characterized in that, The lifting mechanism includes a lifting motor, a lead screw, a wedge block, and a connecting plate. The lead screw is rotatably mounted on the lifting plate and connected to the lifting motor. The connecting plate is slidably mounted on the lifting plate. The wedge block is sleeved on the lead screw and threadedly engaged with the lead screw. The guide slope of the wedge block is slidably connected to the connecting plate.

8. The cutting device according to claim 7, characterized in that, It also includes a locking mechanism that can lock the lead screw to the lifting plate.

9. The cutting device according to claim 1, characterized in that, It also includes a dust hood with an opening, the opening of which faces the cutting die.

10. A stacking machine, characterized in that, Includes the cutting device as described in any one of claims 1 to 9 above.

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