Pole cutting device and production line

Abstract

The present invention discloses a pole piece cutting device and production line, and relates to the field of pole piece cutting technology. The pole piece cutting device comprises a cutting motion mechanism, a cutting mechanism and two belt conveyor mechanisms, the conveying surfaces of the two belt conveyor mechanisms are arranged opposite to each other, and jointly form a conveying gap for conveying pole pieces, and are used to jointly convey pole pieces along a first direction, the cutting motion mechanism is connected to the cutting mechanism, and the cutting mechanism is located at the end of the belt conveyor mechanism, and can drive the cutting mechanism to reciprocate on the straight line where the first direction is located, so that the cutting mechanism receives the pole piece when it is close to the end of the belt conveyor mechanism, and the cutting mechanism can also cut the pole piece. The pole piece cutting device and production line have the characteristics of low probability of pole piece bending and blocking, and high cutting efficiency and precision.

Description

Technical Field

[0001] The present invention relates to the technical field of pole piece cutting, and in particular to a pole piece cutting device and a production line. Background Art

[0002] The "stacked" cell of a lithium-ion battery is composed of positive and negative electrodes stacked together with a separator.

[0003] Before the stacking process is carried out, the pole pieces need to be cut and produced. However, in the existing production process, the pole pieces between the feeding and cutting positions are prone to bending and blocking, and the pole piece cutting efficiency is slow and the cutting accuracy is low.

[0004] In view of this, it is particularly important to develop and design a pole piece cutting device and production line that can solve the above technical problems. Summary of the invention

[0005] The object of the present invention is to provide a pole piece cutting device, which has the characteristics of low probability of pole piece bending and material blockage, and high cutting efficiency and precision.

[0006] Another object of the present invention is to provide a pole piece production line, which has the characteristics of low probability of pole piece bending and material blockage, and high cutting efficiency and precision.

[0007] The present invention provides a technical solution:

[0008] In the first aspect, an embodiment of the present invention provides a pole piece cutting device, comprising a cutting motion mechanism, a cutting mechanism and two belt conveyor mechanisms; the conveying surfaces of the two belt conveyor mechanisms are arranged opposite to each other, and jointly form a conveying gap for conveying the pole piece, and are used to jointly convey the pole piece along a first direction; the cutting motion mechanism is connected to the cutting mechanism, and the cutting mechanism is located at the end of the belt conveyor mechanism, and can drive the cutting mechanism to reciprocate on the straight line where the first direction is located, so that the cutting mechanism receives the pole piece when it is close to the end of the belt conveyor mechanism, and the cutting mechanism can also cut the pole piece.

[0009] In combination with the first aspect, in a first implementation method of the first aspect, the two belt conveyor mechanisms can convey the pole piece at a preset conveying speed; the cutting motion mechanism can drive the movement speed of the cutting mechanism during the movement along the first direction to reach the preset conveying speed, and the cutting mechanism can cut the pole piece while moving at the preset conveying speed and along the first direction.

[0010] In combination with the first aspect and its above-mentioned implementation manner, in a second implementation manner of the first aspect, the pole piece cutting device also includes a material guiding mechanism, the material guiding mechanism includes a first material guiding member, the first material guiding member includes two first material guiding strips; the two first material guiding strips are both extended along the first direction, and there is a first material guiding gap between the two first material guiding strips for transmitting the pole piece, and the cutting mechanism can receive the pole piece transmitted by the belt conveyor mechanism through the first material guiding gap; the end of the belt conveyor mechanism extends to the head end of the first material guiding strip, and the end of the belt conveyor mechanism overlaps with the head end of the first material guide strip.

[0011] In combination with the first aspect and the above-mentioned implementation manner, in a third implementation manner of the first aspect, the number of the first material guide members is multiple; the multiple first material guide members are arranged in sequence along the second direction at intervals, and the end of the belt conveyor mechanism is located between two adjacent first material guide members, wherein the second direction is the direction of the rotation axis of the belt conveyor mechanism, and the cutting mechanism can receive the pole piece transmitted by the belt conveyor mechanism in the interval between the two first material guide members.

[0012] In combination with the first aspect and its above-mentioned implementation manner, in a fourth implementation manner of the first aspect, the cutting mechanism includes a cutting frame, a cutting drive, a cutting knife and a second material guide member, the cutting frame is connected to the cutting movement mechanism, the cutting drive member and the second material guide member are both installed on the cutting frame, the cutting drive member is connected to the cutting knife, and is used to drive the cutting knife to cut the pole piece; the second material guide member includes two second material guide strips extending along the first direction, and a second material guide gap is provided between the two second material guide strips for transmitting the pole piece, the cutting knife is located at one end of the second material guide strip away from the first material guide member, and the cutting movement mechanism can drive the second material guide strip to move to the interval between two adjacent first material guide members to receive the pole piece to the second material guide gap.

[0013] In combination with the first aspect and its above-mentioned implementation manner, in a fifth implementation manner of the first aspect, there is a plurality of second material guide members; the plurality of second material guide members are arranged at intervals along the second direction, and the plurality of second material guide members can be driven by the cutting movement mechanism and move along with the cutting frame to the interval between two adjacent first material guide members to receive the pole piece.

[0014] In combination with the first aspect and its above-mentioned implementation manner, in a sixth implementation manner of the first aspect, the end of the second guide strip away from the cutting knife has a second guide slope set at an angle to the first direction, and the second guide slopes of the two second guide strips of a second guide member each form a V-shaped opening for receiving the pole piece.

[0015] In combination with the first aspect and its above-mentioned implementation methods, in the seventh implementation method of the first aspect, the cutting mechanism also includes a cutting reciprocating motion drive mechanism, the cutting drive member, the cutting reciprocating motion drive mechanism and the cutting knife are connected in sequence, and the cutting drive member can drive the cutting knife to reciprocately cut the pole piece by driving the cutting reciprocating motion drive mechanism.

[0016] In combination with the first aspect and the above-mentioned implementation manners, in an eighth implementation manner of the first aspect, the cutting mechanism also includes a first material clamp and a second material clamp, the second material clamp is fixedly connected to the cutting frame, the first material clamp is movably connected to the cutting frame, and the first material clamp can move toward the second material clamp; the first material clamp is connected to the cutting knife, and can move toward the second material clamp with the cutting knife when the cutting knife cuts the pole piece, so as to clamp the pole piece together with the second material clamp.

[0017] In the second aspect, an embodiment of the present invention further provides a pole piece production line, which includes the pole piece cutting device. The pole piece cutting device includes a cutting motion mechanism, a cutting mechanism and two belt conveyor mechanisms; the conveying surfaces of the two belt conveyor mechanisms are arranged opposite to each other, and together form a conveying gap for conveying pole pieces, and are used to convey the pole pieces together along a first direction; the cutting motion mechanism is connected to the cutting mechanism, and the cutting mechanism is located at the end of the belt conveyor mechanism, and can drive the cutting mechanism to reciprocate on the straight line where the first direction is located, so that the cutting mechanism receives the pole piece when it is close to the end of the belt conveyor mechanism, and the cutting mechanism can also cut the pole piece.

[0018] Compared with the prior art, the electrode cutting device and production line provided by the embodiment of the present invention have the following beneficial effects over the prior art:

[0019] The transmission surfaces of the two belt conveyor mechanisms are arranged opposite to each other and jointly form a transmission gap for transmitting the pole piece, so as to jointly transmit the pole piece along the first direction, or in other words, the transmission surfaces of the two belt conveyor mechanisms are parallel and corresponding to each other, and can jointly transmit the pole piece from between the transmission surfaces of the two belt conveyor mechanisms. The cutting movement mechanism is connected to the cutting mechanism, and the cutting mechanism is arranged near the end of the belt conveyor mechanism. The cutting movement mechanism can drive the cutting mechanism to reciprocate on the straight line in the first direction, and when the cutting mechanism is near the end of the belt conveyor mechanism, the cutting mechanism can receive the pole piece, and of course, the cutting mechanism can also cut the pole piece. In this way, the pole piece is jointly transported by two belt conveyor mechanisms, and the pole piece transportation is more stable. Moreover, due to the small size of the belt conveyor mechanism, the position of the pole piece driven by the end of the belt conveyor mechanism can be shorter than the position where the cutting mechanism cuts the pole piece. The pole piece between the belt conveyor mechanism and the cutting mechanism is not prone to blockage and bending, and the production accuracy of the pole piece cutting device is also improved. The cutting motion mechanism drives the cutting mechanism to actively receive the pole piece, which improves the efficiency of transmitting the pole piece to the cutting mechanism, thereby improving the efficiency of the pole piece cutting device in cutting the pole piece.

[0020] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only illustrate certain embodiments of the present invention and should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can also be obtained based on these drawings without creative work.

[0022] Figure 1 A schematic structural diagram of a pole piece cutting device provided in an embodiment of the present invention applied to a pole piece production line.

[0023] Figure 2 A schematic structural diagram of a pole piece cutting device provided in an embodiment of the present invention.

[0024] Figure 3 A schematic diagram of the three-dimensional structure of a pole piece cutting device provided in an embodiment of the present invention.

[0025] Figure 4 for Figure 3 Schematic diagram of the enlarged structure at position IV in the middle.

[0026] Figure 5 A schematic diagram of the cutting motion mechanism and cutting mechanism structure of the pole piece cutting device provided in an embodiment of the present invention.

[0027] Figure 6 A schematic structural diagram of a cutting mechanism of a pole piece cutting device provided in an embodiment of the present invention from a first viewing angle.

[0028] Figure 7 A schematic structural diagram of a cutting mechanism of a pole piece cutting device provided in an embodiment of the present invention from a second viewing angle.

[0029] Icons: 100-pole production line; 20-production transmission mechanism; 10-pole cutting device; 12-cutting motion mechanism; 13-cutting mechanism; 131-cutting frame; 132-cutting drive member; 133-cutting reciprocating motion drive mechanism; 134-cutting knife; 135-second material guide member; 1352-second material guide strip; 1354-second material guide gap; 1356-second material guide slope; 136-first material clamp; 137-second material clamp; 138-elastic member; 15-belt transmission mechanism; 17-material guide mechanism; 171-first material guide member; 1711-first material guide strip; 1712-first material guide gap; 172-material guide bracket; 800-pole; A-first direction; B-second direction. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0031] It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. The orientation or position relationship indicated by the terms "upper", "lower", "inner", "outer", "left", "right", etc. is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship usually placed when the invention product is used, or the orientation or position relationship commonly understood by those skilled in the art. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. The terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance. The terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such a process, method, article or device. Without more constraints, an element defined by the phrase "comprising a..." does not exclude the existence of other identical elements in the process, method, article or apparatus comprising the element.

[0032] It should also be noted that, unless otherwise clearly specified and limited, the terms "disposed", "connected" and the like should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] The specific implementation modes of the present invention are described in detail below in conjunction with the accompanying drawings.

[0034] Example:

[0035] See also Figure 1 , Figure 1 A schematic structural diagram of a pole piece cutting device 10 provided in an embodiment of the present invention applied to a pole piece production line 100.

[0036] The embodiment of the present invention provides a pole piece cutting device 10, which has the characteristics of low probability of bending and blocking of pole pieces 800, and high cutting efficiency and precision. The pole piece cutting device 10 can be applied to pole piece production systems or production lines, etc. Of course, the pole piece cutting device 10 can also be used independently.

[0037] Among them, taking the application of the pole piece cutting device 10 to the pole piece production line 100 as an example, the pole piece production line 100 includes the pole piece cutting device 10, so as to cut the pole piece 800 through the pole piece cutting device 10. In addition, the pole piece production line 100 may also include a production transmission mechanism 20, which is arranged close to the pole piece cutting device 10 for transmitting the cut pole piece 800.

[0038] Since the electrode production line 100 adopts the electrode cutting device 10 provided by the embodiment of the present invention, the electrode production line 100 also has the characteristics of low probability of bending and blocking of the electrode 800 and high cutting efficiency and precision.

[0039] The following will specifically introduce the structural composition, working principle and beneficial effects of the pole piece cutting device 10 provided in an embodiment of the present invention.

[0040] See also Figure 2 , Figure 2 The schematic diagram of the structure of the electrode cutting device 10 provided in the embodiment of the present invention. Figure 2 , the direction indicated by arrow A is the first direction A.

[0041] The electrode cutting device 10 includes a cutting motion mechanism 12, a cutting mechanism 13 and two belt conveyor mechanisms 15, wherein the conveying surfaces of the two belt conveyor mechanisms 15 are arranged opposite to each other and jointly form a conveying gap for conveying the electrode 800, so as to jointly convey the electrode 800 along the first direction A, or in other words, the conveying surfaces of the two belt conveyor mechanisms 15 are parallel and corresponding to each other, and can jointly convey the electrode 800 from between the conveying surfaces of the two belt conveyor mechanisms 15.

[0042] The cutting movement mechanism 12 is connected to the cutting mechanism 13, and the cutting mechanism 13 is arranged near the end of the belt conveyor mechanism 15. The cutting movement mechanism 12 can drive the cutting mechanism 13 to reciprocate on the straight line where the first direction A is located, and when the cutting mechanism 13 is close to the end of the belt conveyor mechanism 15, the cutting mechanism 13 can receive the pole piece 800. Of course, the cutting mechanism 13 can also cut the pole piece 800.

[0043] In this way, the pole piece 800 is jointly transported by two belt conveyor mechanisms 15, and the transmission of the pole piece 800 is relatively stable. Moreover, due to the small size of the belt conveyor mechanism 15, the position of the pole piece 800 driven by the end of the belt conveyor mechanism 15 can be shorter than the position where the cutting mechanism 13 cuts the pole piece 800. The pole piece 800 between the belt conveyor mechanism 15 and the cutting mechanism 13 is not prone to material blockage and bending, and the production accuracy of the pole piece cutting device 10 is also improved. The cutting motion mechanism 12 drives the cutting mechanism 13 to actively receive the pole piece 800, which improves the efficiency of transmitting the pole piece 800 to the cutting mechanism 13, thereby improving the efficiency of the pole piece cutting device 10 in cutting the pole piece 800.

[0044] It should be noted that, before the cutting action, the existing pole piece 800 is transported by a driving roller of a larger size to ensure the stability of the transmission of the pole piece 800. In this way, the position where the driving roller clamps the pole piece 800 is far away from the cutting mechanism 13, so that when the pole piece 800 is driven, the pole piece 800 located between the driving roller and the cutting mechanism 13 is prone to bending and blocking, and it will also cause a large error between the actual cutting position and the preset cutting position, affecting the film production accuracy. In addition, in the present embodiment, the cutting motion mechanism 12 is a linear motion mechanism composed of a linear guide and a driving member. In other embodiments, the cutting drive mechanism can also be a pneumatic, hydraulic or other linear motion mechanism.

[0045] Furthermore, the two belt conveyor mechanisms 15 can convey the pole piece 800 at a preset conveying speed, and the cutting motion mechanism 12 can make the cutting mechanism 13 move at a preset conveying speed while it moves along the first direction A. At the same time, the cutting mechanism 13 can complete the action of cutting the pole piece 800 while moving at a preset conveying speed and along the first direction A.

[0046] In this way, the cutting mechanism 13 first moves in the direction opposite to the first direction A to the end of the belt conveyor mechanism 15 under the drive of the cutting movement mechanism 12, and receives the pole piece 800; then the cutting mechanism 13 moves in the first direction A again under the drive of the cutting movement mechanism 12, and when the movement speed of the cutting mechanism 13 reaches the transmission speed of the pole piece 800, that is, the preset transmission speed, the pole piece 800 is cut without the need for the pole piece 800 to stop, and the above-mentioned action of receiving and cutting the pole piece 800 can be repeated, thereby completing the continuous transmission, receiving and cutting actions of the pole piece 800, thereby further improving the efficiency of the pole piece cutting device 10 in cutting the pole piece 800.

[0047] It should be noted that the cutting mechanism 13, the belt conveyor mechanism 15 and the cutting motion mechanism 12 can complete the work of collaboratively cutting the pole piece 800 by setting the movement rhythm between them. Of course, whether the movement speed of the cutting mechanism 13 reaches the transmission speed of the pole piece 800 can be detected by sensors such as speed sensors, and the cutting mechanism 13 performs the action of cutting the pole piece 800 according to the switch signal of the speed sensor. In addition, the cutting mechanism 13, the belt conveyor mechanism 15 and the cutting motion mechanism 12 can also be controlled to work collaboratively by a common controller, and the controller can be a PLC (ProgrAmmABle Logic Controller, programmable logic controller) or the like.

[0048] See also Figure 3 and Figure 4 , Figure 3 A schematic diagram of the three-dimensional structure of a pole piece cutting device 10 provided in an embodiment of the present invention. Figure 4 for Figure 3 A schematic diagram of the structure at position IV in FIG. Figure 3 , the direction indicated by arrow A is the first direction A, and the direction indicated by arrow B is the second direction B.

[0049] The pole piece cutting device 10 may also include a material guiding mechanism 17, the material guiding mechanism 17 includes a first material guiding member 171, the first material guiding member 171 includes two first material guiding strips 1711, the two first material guiding strips 1711 are both extended along the first direction A, and there is a first material guiding gap 1712 between the two first material guiding strips 1711, the first material guiding gap 1712 is used for the pole piece 800 to be transmitted through, and the cutting mechanism 13 can receive the pole piece 800 transmitted by the belt conveyor mechanism 15 through the first material guiding gap 1712. The end of the belt conveyor 15 extends to the beginning of the first guide strip 1711, so that the beginnings of the two first guide strips 1711 coincide with the end of the belt conveyor 15, or in other words, the projections of the two first guide strips 1711 and the belt conveyor 15 on a plane perpendicular to the second direction B coincide, wherein the second direction B is the direction of the rotation axis of the belt conveyor 15, or in other words, part of the first guide strip 1711 is located on the side of the end part of the belt conveyor 15.

[0050] In this way, the pole piece 800 directly enters the first material guide gap 1712 between the two first material guide strips 1711 after being conveyed by the two belt conveyor mechanisms 15, so that the position of the pole piece 800 is limited by the two first material guide strips 1711, further reducing the bending and blocking of the pole piece 800.

[0051] Furthermore, the number of first guide members 171 may be multiple, and the multiple first guide members 171 are arranged in sequence along the second direction B at intervals, and the end of the belt conveyor mechanism 15 is located between two adjacent first guide members 171. The multiple first guide members 171 are used to improve the stability of the conveying pole piece 800, and the cutting mechanism 13 can receive the pole piece 800 transmitted by the belt conveyor mechanism 15 in the gap between the two first guide members 171. That is to say, after the belt conveyor mechanism 15 transmits the pole piece 800 to the first guide member 171, the cutting mechanism 13 can receive the pole piece 800 in the gap between the first guide members 171 to improve the stability of the cutting mechanism 13 receiving the pole piece 800.

[0052] It should be noted that the material guiding mechanism 17 may also include a plurality of material guiding brackets 172 , which are respectively arranged on both sides of the belt conveyor mechanism 15 in the second direction B, and the material guiding brackets 172 are used to hold up the pole piece 800 to further ensure smooth conveyance of the parts.

[0053] See also Figure 3 , Figure 5 and Figure 6 , Figure 5 A schematic structural diagram of a cutting motion mechanism 12 and a cutting mechanism 13 of a pole piece cutting device 10 provided in an embodiment of the present invention. Figure 6 It is a schematic structural diagram of the cutting mechanism 13 of the pole piece cutting device 10 provided in an embodiment of the present invention from a first viewing angle.

[0054] The cutting mechanism 13 may include a cutting frame 131, a cutting drive 132, a cutting knife 134 and a second material guide 135, the cutting frame 131 is connected to the cutting motion mechanism 12, the cutting drive 132 and the second material guide 135 are both installed on the cutting frame 131, wherein the cutting drive 132 is connected to the cutting knife 134, and the cutting drive 132 is used to drive the cutting knife 134 to cut the pole piece 800, or in other words, the cutting drive 132 is used to drive the cutting knife 134 to move toward the pole piece 800 to cut the pole piece 800.

[0055] The second guide member 135 includes two second guide strips 1352 extending along the first direction A. The cutting mechanism 13 is located at one end of the second guide strip 1352 away from the first guide member 171. There is a second guide gap 1354 between the two second guide strips 1352 for transmitting the pole piece 800. The cutting movement mechanism 12 can drive the second guide strip 1352 to move to the interval between two adjacent first guide members 171 to receive the pole piece 800 to the second guide gap 1354.

[0056] In this way, when the cutting mechanism 13 receives the pole piece 800 in the interval between multiple first guide members 171, the cutting mechanism 13 accommodates the pole piece 800 through the second guide gap 1354 of the second guide member 135, and makes the pole piece 800 move toward the cutting knife 134 in the second guide gap 1354. When the second guide member 135 and the pole piece 800 are relatively stationary, that is, when the cutting mechanism 13 reaches a preset transmission speed along the first direction A, the cutting drive member 132 drives the cutting knife 134 to cut the pole piece 800, and receives the pole piece 800 through the second guide member 135, thereby reducing the deformation of the pole piece 800 during cutting, and does not interfere with the transmission of the pole piece 800 by the guide mechanism 17 and the belt conveyor mechanism 15, so as to improve the transmission stability of the pole piece 800. It should be noted that, in the present embodiment, there are multiple second guide members 135, and the multiple second guide members 135 are arranged at intervals along the second direction B. Moreover, the multiple second guide members 135 can be driven by the cutting movement mechanism 12 and move along with the cutting frame 131 to the interval between two adjacent first guide members 171 to receive the pole piece 800. In other words, when the second guide member 135 receives the pole piece 800, the multiple second guide members 135 and the multiple first guide members 171 cross each other to further improve the stability of receiving the pole piece 800.

[0057] Furthermore, a second guide slope 1356 is provided at one end of the second guide strip away from the cutting knife 134 and arranged at an angle to the first direction A, or, in other words, a second guide slope 1356 is provided at one end of the second guide strip 1352 close to the belt conveyor mechanism 15 and arranged at an angle to the first direction A. The second guide slopes 1356 of the two second guide strips 1352 of the second guide member 135 jointly form a V-shaped opening for receiving the pole piece 800, that is, the above-mentioned opening is arranged toward the first guide strip 1711 so that the pole piece 800 can enter the second guide gap 1354 more smoothly.

[0058] See also Figure 3 and Figure 7 , Figure 7 It is a schematic structural diagram of the cutting mechanism 13 of the pole piece cutting device 10 provided in an embodiment of the present invention under a second viewing angle.

[0059] The cutting mechanism 13 may also include a cutting reciprocating motion drive mechanism 133. The cutting drive member 132, the cutting reciprocating motion drive mechanism 133 and the cutting knife 134 are connected in sequence. The cutting drive member 132 can drive the cutting knife 134 to reciprocate and cut the pole piece 800 by driving the cutting reciprocating motion drive mechanism 133 to rotate. In the present embodiment, the cutting reciprocating motion drive mechanism 133 is an eccentric wheel. The cutting drive member 132 can convert the rotation of the cutting drive member 132 into the movement of the cutting knife 134 to reciprocate and cut the pole piece 800 through the cutting reciprocating motion drive mechanism 133, so as to improve the efficiency of the cutting knife 134 in cutting the pole piece 800.

[0060] Furthermore, the cutting mechanism 13 may also include a first material clamp 136 and a second material clamp 137, wherein the second material clamp 137 is fixedly connected to the cutting frame 131, the first material clamp 136 is movably connected to the cutting frame 131, and the first material clamp 136 can move toward the second material clamp 137, and the first material clamp 136 is connected to the cutting knife 134, and can move toward the second material clamp 137 with the cutting knife 134 when the cutting knife 134 cuts the pole piece 800, so as to clamp the pole piece 800 together with the second material clamp 137. In other words, when the cutting knife 134 cuts the pole piece 800, the first material clamp 136 and the second material clamp 137 clamp the pole piece 800 at the same time, so as to ensure that the pole piece 800 is not easily skewed when cutting the pole piece 800, thereby improving the cutting accuracy of the pole piece 800.

[0061] It should be noted that, in this embodiment, the cutting mechanism 13 may further include an elastic member 138, and the first material clamp 136 is connected to the cutting knife 134 through the elastic member 138 to improve the stability of the first material clamp 136 and the second material clamp 137 clamping the pole piece 800. In addition, the elastic member 138 is a pressure regulating cylinder, and in other embodiments, the elastic member 138 may also be a spring or rubber or other elastic member.

[0062] The working principle of the pole piece cutting device 10 provided in the embodiment of the present invention is:

[0063] The transmission surfaces of the two belt conveyor mechanisms 15 are arranged opposite to each other and jointly form a transmission gap for transmitting the pole piece 800, so as to jointly transmit the pole piece 800 along the first direction A. In other words, the transmission surfaces of the two belt conveyor mechanisms 15 are parallel and corresponding to each other, and can jointly transmit the pole piece 800 from between the transmission surfaces of the two belt conveyor mechanisms 15. The cutting movement mechanism 12 is connected to the cutting mechanism 13, and the cutting mechanism 13 is arranged near the end of the belt conveyor mechanism 15. The cutting movement mechanism 12 can drive the cutting mechanism 13 to reciprocate on the straight line where the first direction A is located, and when the cutting mechanism 13 is near the end of the belt conveyor mechanism 15, the cutting mechanism 13 can receive the pole piece 800. Of course, the cutting mechanism 13 can also cut the pole piece 800. In this way, the pole piece 800 is jointly transported by two belt conveyor mechanisms 15, and the transmission of the pole piece 800 is relatively stable. Moreover, due to the small size of the belt conveyor mechanism 15, the position of the pole piece 800 driven by the end of the belt conveyor mechanism 15 can be shorter than the position where the cutting mechanism 13 cuts the pole piece 800. The pole piece 800 between the belt conveyor mechanism 15 and the cutting mechanism 13 is not prone to material blockage and bending, and the production accuracy of the pole piece cutting device 10 is also improved. The cutting motion mechanism 12 drives the cutting mechanism 13 to actively receive the pole piece 800, which improves the efficiency of transmitting the pole piece 800 to the cutting mechanism 13, thereby improving the efficiency of the pole piece cutting device 10 in cutting the pole piece 800.

[0064] In summary:

[0065] The embodiment of the present invention provides a pole piece cutting device 10, which has the characteristics of low probability of bending and blocking of the pole piece 800 and high cutting efficiency and precision.

[0066] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the features in the above embodiments can be combined with each other without conflict, and the present invention can also have various changes and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention. In addition, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.

Claims

1. A pole piece cutting device, characterized in that: It includes a cutting movement mechanism, a cutting mechanism and two belt transmission mechanisms; The conveying surfaces of the two belt conveying mechanisms are arranged opposite to each other and jointly form a conveying gap for conveying the pole piece, and are used to jointly convey the pole piece along the first direction; The cutting movement mechanism is connected to the cutting mechanism, and the cutting mechanism is located at the end of the belt conveyor mechanism, and can drive the cutting mechanism to reciprocate on the straight line where the first direction is located, so that the cutting mechanism receives the pole piece when it is close to the end of the belt conveyor mechanism, and the cutting mechanism can also cut the pole piece; The two belt conveying mechanisms are capable of conveying the pole pieces at a preset conveying speed; The cutting movement mechanism can drive the cutting mechanism to move in the first direction at a speed reaching the preset transmission speed, and the cutting mechanism can cut the pole piece when moving in the first direction at the preset transmission speed; The pole piece cutting device further comprises a material guiding mechanism, wherein the material guiding mechanism comprises a first material guiding member, and the first material guiding member comprises two first material guiding strips; The two first material guide strips are both extended along the first direction, and a first material guide gap for transmitting the pole piece is provided between the two first material guide strips, and the cutting mechanism can receive the pole piece transmitted by the belt transmission mechanism through the first material guide gap; The end of the belt conveyor mechanism extends to the head end of the first material guide strip, and the end of the belt conveyor mechanism overlaps with the head end of the first material guide strip; The number of the first material guiding members is multiple; A plurality of the first material guide members are sequentially arranged in intervals along a second direction, and an end of the belt conveyor mechanism is located between two adjacent first material guide members, wherein the second direction is the direction of the rotation axis of the belt conveyor mechanism, and the cutting mechanism can receive the pole piece conveyed by the belt conveyor mechanism in the interval between the two first material guide members; The material guiding mechanism further comprises a plurality of material guiding brackets, which are respectively arranged on both sides of the belt conveying mechanism in the second direction, and the material guiding brackets are used to support the pole pieces.

2. The pole piece cutting device according to claim 1, characterized in that: The cutting mechanism comprises a cutting frame, a cutting drive, a cutting knife and a second material guide, wherein the cutting frame is connected to the cutting motion mechanism, the cutting drive and the second material guide are both installed on the cutting frame, and the cutting drive is connected to the cutting knife and is used to drive the cutting knife to cut the pole piece; The second material guide member includes two second material guide strips extending along the first direction, and a second material guide gap is provided between the two second material guide strips for transmitting the pole piece. The cutting knife is located at one end of the second material guide strip away from the first material guide member, and the cutting movement mechanism can drive the second material guide strip to move to the interval between two adjacent first material guide members to receive the pole piece to the second material guide gap.

3. The pole piece cutting device according to claim 2, characterized in that: The number of the second material guiding members is multiple; A plurality of the second material guide members are arranged in intervals along the second direction, and driven by the cutting movement mechanism, the plurality of the second material guide members can move along with the cutting frame to the interval between two adjacent first material guide members to receive the pole piece.

4. The pole piece cutting device according to claim 2, characterized in that: One end of the second material guide strip away from the cutting knife has a second material guide slope arranged at an angle to the first direction, and the second material guide slopes of the two second material guide strips of one second material guide member jointly form a V-shaped opening for receiving the pole piece.

5. The pole piece cutting device according to claim 2, characterized in that: The cutting mechanism also includes a cutting reciprocating motion driving mechanism. The cutting driving member, the cutting reciprocating motion driving mechanism and the cutting knife are connected in sequence. The cutting driving member can drive the cutting knife to reciprocately cut the pole piece by driving the cutting reciprocating motion driving mechanism.

6. The pole piece cutting device according to claim 2, characterized in that: The cutting mechanism further comprises a first material clamp and a second material clamp, wherein the second material clamp is fixedly connected to the cutting frame, the first material clamp is movably connected to the cutting frame, and the first material clamp can move toward the second material clamp; The first material clamp is connected to the cutting knife, and can move toward the second material clamp along with the cutting knife when the cutting knife cuts the pole piece, so as to clamp the pole piece together with the second material clamp.

7. A pole piece production line, characterized in that: It comprises a pole piece cutting device as described in any one of claims 1-6.

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