阅读说明：本技术 激光模切制痕一体机 (Laser die cutting and marking integrated machine ) 是由 冯彪 陈荣军 林瑞 吴学科 王先声 阳如坤 于 2021-09-29 设计创作，主要内容包括：本发明的实施例提供了一种激光模切制痕一体机,涉及锂电池制造技术领域,该激光模切制痕一体机包括安装架、放卷组件、激光切极耳组件、激光制痕组件和收卷组件,放卷组件设置在安装架上,激光切极耳组件设置在安装架上,并位于放卷组件的下游,激光制痕组件设置在安装架上,并位于激光切极耳组件的下游,用于向极片施加激光束,以在极片的表面形成叠片痕迹,收卷组件设置在安装架上,并位于激光制痕组件的下游,用于收卷极片。相较于现有技术,本发明提供的激光模切制痕一体机,其能够同时实现模切和制痕工艺,设备简单,设备稼动率高,并且效率高,能够满足后段的叠片工艺要求,且大大降低了设备短路的风险。(The embodiment of the invention provides a laser die cutting mark all-in-one machine, which relates to the technical field of lithium battery manufacturing and comprises an installation frame, an unreeling component, a laser tab cutting component, a laser mark making component and a reeling component, wherein the unreeling component is arranged on the installation frame, the laser tab cutting component is arranged on the installation frame and is positioned at the downstream of the unreeling component, the laser mark making component is arranged on the installation frame and is positioned at the downstream of the laser tab cutting component and is used for applying laser beams to pole pieces so as to form lamination marks on the surfaces of the pole pieces, and the reeling component is arranged on the installation frame and is positioned at the downstream of the laser mark making component and is used for reeling the pole pieces. Compared with the prior art, the laser die-cutting and mark-making integrated machine provided by the invention can realize die-cutting and mark-making processes at the same time, has the advantages of simple equipment, high equipment utilization rate and high efficiency, can meet the requirement of a lamination process at the rear section, and greatly reduces the risk of equipment short circuit.)

1. The utility model provides a laser die cutting system trace all-in-one, its characterized in that includes the mounting bracket, unreels the subassembly, laser surely utmost point ear subassembly, laser system trace subassembly and rolling subassembly, it sets up to unreel the subassembly on the mounting bracket for unreel the pole piece, laser surely utmost point ear subassembly sets up on the mounting bracket, and is located unreel the low reaches of subassembly, it is right to be used for the pole piece carries out laser cutting in order to form utmost point ear, laser system trace subassembly sets up on the mounting bracket, and is located the low reaches that utmost point ear subassembly was cut to laser, be used for to the laser beam is applyed to the pole piece, with the surface of pole piece forms the lamination trace, the rolling subassembly sets up on the mounting bracket, and is located the low reaches that laser system trace subassembly was used for the rolling the pole piece.

2. The laser die-cutting and marking all-in-one machine is characterized in that a first buffer component, a second buffer component and a marking driving component are further arranged on the mounting frame, and the first buffer component is located at the downstream of the laser tab cutting component and located at the upstream of the laser marking component; the second buffer memory assembly is located the low reaches of laser system trace subassembly, and is located the upper reaches of rolling subassembly, system trace driving piece is located first buffer memory assembly with between the second buffer memory assembly, just system trace driving piece is used for intermittent type nature drive the pole piece passes through laser system trace subassembly, first buffer memory assembly is used for when system trace driving piece stops buffer memory the pole piece, second buffer memory assembly is used for when system trace driving piece drives buffer memory the pole piece.

3. The laser die-cutting and mark-making all-in-one machine as claimed in claim 2, wherein the first buffer assembly comprises a first buffer roller and a first driving member, the first driving member is disposed on the mounting frame, the first buffer roller is in transmission connection with the first driving member and is used for being attached to the surface of the pole piece in a rolling manner, and the first buffer roller is driven by the first driving member to push the pole piece to reciprocate along a direction perpendicular to the conveying direction, so that buffer storage and release of the pole piece are realized.

4. The laser die-cutting and mark-making all-in-one machine as claimed in claim 2, wherein the second buffer assembly comprises a second buffer roller and a second driving member, the second driving member is disposed on the mounting frame, the second buffer roller is in transmission connection with the second driving member and is used for being attached to the surface of the pole piece in a rolling manner, and the second buffer roller is driven by the second driving member to push the pole piece to reciprocate along a direction perpendicular to the conveying direction, so that the buffer storage and release of the pole piece are realized.

5. The laser die-cutting and marking all-in-one machine as claimed in claim 1 or 2, wherein the laser marking assembly comprises a plurality of laser marking devices, the laser marking devices are arranged at intervals and are provided with channels for the pole piece to pass through, and the laser marking devices are used for forming at least two lamination marks on the two side surfaces of the pole piece respectively.

6. The laser die-cutting and mark-making all-in-one machine as claimed in claim 5, wherein each laser mark-making machine is provided with a light-emitting module, and the light-emitting module is used for adjusting a light-emitting angle of the laser mark-making machine so as to enable the laser mark-making machine to trace the pole piece.

7. The laser die-cutting and mark-making all-in-one machine as claimed in claim 1, wherein a die-cutting deviation-rectifying component is further arranged on the mounting frame, and the die-cutting deviation-rectifying component is arranged at the upstream of the laser tab-cutting component and used for rectifying deviation of the pole piece entering the laser tab-cutting component.

8. The laser die-cutting and mark-making integrated machine according to claim 1, wherein a mark-making deviation-rectifying component is further arranged on the mounting frame, and the mark-making deviation-rectifying component is arranged at the upstream of the laser mark-making component and used for rectifying the deviation of the pole piece entering the laser mark-making component.

9. The laser die-cutting and mark-making all-in-one machine as claimed in claim 1, wherein a mark-making tension assembly is further arranged on the mounting frame, and the mark-making tension assembly is arranged between the laser tab cutting assembly and the laser mark-making assembly and used for adjusting the tension of the pole piece between the laser tab cutting assembly and the laser mark-making assembly.

10. The laser die-cutting and marking all-in-one machine as claimed in claim 1, wherein a driving assembly is further arranged on the mounting frame, and the driving assembly is arranged between the laser tab cutting assembly and the laser marking assembly and used for driving the pole piece to move.

Technical Field

The invention relates to the technical field of lithium battery manufacturing, in particular to a laser die cutting and marking integrated machine.

Background

In the lamination process in the lithium battery industry, pole pieces are generally cut off for lamination, but sharp burrs can be generated in the pole piece cutting process in the process of the process, and the burrs can pierce through a diaphragm to cause the possibility of short circuit of a battery. Therefore, in order to control burrs generated by cutting, a marking process is adopted in an anode laser cutting and laminating process instead of the cutting process. However, if the mark making process is integrated on the lamination equipment, the equipment is too complex, the equipment utilization rate is low, the yield is low, and if the mark making process is made into single mark making equipment, the problem of low efficiency exists.

Disclosure of Invention

The invention aims to provide a laser die-cutting and mark-making integrated machine which can realize die-cutting and mark-making processes at the same time, has simple equipment, high equipment utilization rate and high efficiency, can meet the lamination process requirement of a rear section, and greatly reduces the risk of short circuit of the equipment.

Embodiments of the invention may be implemented as follows:

in a first aspect, the invention provides a laser die cutting and marking integrated machine, which comprises an installation frame, an unreeling assembly, a laser tab cutting assembly, a laser marking assembly and a reeling assembly, wherein the unreeling assembly is arranged on the installation frame and used for unreeling a pole piece, the laser tab cutting assembly is arranged on the installation frame and located at the downstream of the unreeling assembly and used for carrying out laser cutting on the pole piece to form a tab, the laser marking assembly is arranged on the installation frame and located at the downstream of the laser tab cutting assembly and used for applying laser beams to the pole piece to form a lamination mark on the surface of the pole piece, and the reeling assembly is arranged on the installation frame and located at the downstream of the laser marking assembly and used for reeling the pole piece.

In an optional embodiment, the mounting frame is further provided with a first buffer component, a second buffer component and a marking driving component, wherein the first buffer component is located downstream of the laser tab cutting component and upstream of the laser marking component; the second buffer memory assembly is located the low reaches of laser system trace subassembly, and is located the upper reaches of rolling subassembly, system trace driving piece is located first buffer memory assembly with between the second buffer memory assembly, just system trace driving piece is used for intermittent type nature drive the pole piece passes through laser system trace subassembly, first buffer memory assembly is used for when system trace driving piece stops buffer memory the pole piece, second buffer memory assembly is used for when system trace driving piece drives buffer memory the pole piece.

In an optional implementation manner, the first buffer assembly includes a first buffer roller and a first driving member, the first driving member is disposed on the mounting frame, the first buffer roller is in transmission connection with the first driving member and is used for rolling and fitting on the surface of the pole piece, and the first buffer roller is driven by the first driving member to push the pole piece to reciprocate along a direction perpendicular to the conveying direction, so as to buffer and release the pole piece.

In an optional implementation manner, the second buffer assembly includes a second buffer roller and a second driving member, the second driving member is disposed on the mounting frame, the second buffer roller is in transmission connection with the second driving member and is used for rolling and fitting on the surface of the pole piece, and the second buffer roller is driven by the second driving member to push the pole piece to reciprocate along the direction perpendicular to the conveying direction, so as to buffer and release the pole piece.

In an alternative embodiment, the laser marking assembly includes a plurality of laser markers which are arranged at intervals and are formed with channels for the pole piece to pass through, and the plurality of laser markers are used for forming at least two lamination marks on two side surfaces of the pole piece respectively.

In an optional embodiment, each laser marker has a light emitting module, and the light emitting module is configured to adjust a light emitting angle of the laser marker, so that the laser marker traces the pole piece.

In an optional implementation mode, a die cutting deviation rectifying assembly is further arranged on the mounting frame and arranged at the upstream of the laser tab cutting assembly and used for rectifying deviation of the pole piece entering the laser tab cutting assembly.

In an optional implementation mode, a mark making deviation rectifying assembly is further arranged on the mounting frame and arranged at the upstream of the laser mark making assembly and used for rectifying deviation of the pole piece entering the laser mark making assembly.

In an optional implementation mode, a mark making tension assembly is further arranged on the mounting frame, the mark making tension assembly is arranged between the laser tab cutting assembly and the laser mark making assembly, and the mark making tension assembly is used for adjusting the tension of the pole piece between the laser tab cutting assembly and the laser mark making assembly.

In an optional implementation mode, a driving assembly is further arranged on the mounting frame, and the driving assembly is arranged between the laser tab cutting assembly and the laser mark making assembly and used for driving the pole piece to move.

The beneficial effects of the embodiment of the invention include, for example:

according to the laser die-cutting and mark-making integrated machine provided by the invention, the laser tab cutting assembly and the laser mark making assembly are arranged on the mounting frame at the same time, so that the die-cutting and mark-making processes are realized at the same time, the equipment structure is simple, and compared with the split arrangement or single mark making, the conversion time between the die-cutting and mark-making processes is saved, so that the utilization rate of the equipment is improved, and meanwhile, the equipment efficiency is improved due to the integral arrangement. Meanwhile, the laser mark making assembly is used for applying laser beams to the pole pieces so as to form lamination marks on the surfaces of the pole pieces, the laser mark making is adopted, a cutting mode is not needed, on one hand, the subsequent lamination process is facilitated, and on the other hand, the risk of short circuit of equipment is greatly reduced. Compared with the prior art, the laser die-cutting and mark-making integrated machine provided by the invention can realize die-cutting and mark-making processes at the same time, has the advantages of simple equipment, high equipment utilization rate and high efficiency, can meet the requirement of a lamination process at the rear section, and greatly reduces the risk of equipment short circuit.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic overall structure diagram of a laser die-cutting and marking all-in-one machine provided in an embodiment of the present invention;

fig. 2 is a schematic partial structure diagram of the laser die-cutting and notching all-in-one machine provided in the embodiment of the present invention.

Icon: 100-laser die cutting and marking integrated machine; 110-a mounting frame; 111-die cutting deviation rectifying component; 113-marking deviation rectifying component; 115-trace making tension assembly; 117-a drive assembly; 120-an unwinding assembly; 121-an unwinding tension assembly; 130-laser cutting of the tab assembly; 140-laser marking assembly; 141-a first laser marker; 143-a second laser marker; 150-a winding component; 151-winding tension component; 160-a first cache component; 161-a first buffer roller; 163-a first driver; 170-a second cache component; 171-a second buffer roller; 173-a second drive member; 180-trace making driver.

Detailed Description

In order to make the objects, 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 with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. indicate an orientation or a positional relationship based on that shown in the drawings or that the product of the present invention is used as it is, this is only for convenience of description and simplification of the description, and it does not indicate or imply that the device or the element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

Furthermore, the appearances of the terms "first," "second," and the like, if any, are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

As disclosed in the background, the lamination process of the prior art generally requires a cutting process of the pole pieces before lamination, so that the pole pieces are cut off and laminated after being coated with a separator. However, the cutting tool can deform the edge of the pole piece greatly during the punching process, so that sharp burrs are formed at the cutting edge, and the burrs are pressed during the lamination process to pierce the diaphragm, so that the battery is short-circuited, and the product quality is affected.

Furthermore, a lamination trace is formed on the pole piece by utilizing a trace making process, and lamination can be carried out according to the lamination trace during subsequent lamination, so that burrs caused by cutting off the pole piece are avoided. However, the existing mark making process is usually integrated on the lamination equipment or is separately arranged, if the mark making device is arranged on the lamination equipment, because the mechanical complexity of the lamination equipment is high, the complexity of the equipment is further improved by the mark making device, the manufacture and the equipment distribution are not facilitated, and because the mark making and the lamination cannot be continuously carried out at a constant speed, the equipment utilization rate is too low, and the lamination is directly carried out after the mark making, the lamination effect is poor, and the yield is low. If the marking device which is arranged independently is adopted, the problem of low overall efficiency exists.

In order to solve the above problems, the present invention provides a laser die-cutting and marking all-in-one machine, and it should be noted that, in a non-conflicting manner, features in the embodiments of the present invention may be combined with each other.

DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION

With reference to fig. 1 and fig. 2, the embodiment provides a laser die-cutting and mark-making all-in-one machine 100, which can simultaneously implement die-cutting and mark-making processes, has simple equipment, high equipment utilization rate and high efficiency, can meet the lamination process requirement of the rear section, and greatly reduces the risk of equipment short circuit.

The laser die cutting mark all-in-one machine 100 provided by the embodiment comprises an installation frame 110, an unreeling component 120, a laser cutting tab component 130, a laser mark component 140 and a reeling component 150, the unreeling component 120 is arranged on the installation frame 110 and used for unreeling a pole piece, the laser cutting tab component 130 is arranged on the installation frame 110 and located at the downstream of the unreeling component 120 and used for carrying out laser cutting on the pole piece to form a tab, the laser mark component 140 is arranged on the installation frame 110 and located at the downstream of the laser cutting tab component 130 and used for applying a laser beam to the pole piece and forming a lamination mark on the surface of the pole piece, the reeling component 150 is arranged on the installation frame 110 and located at the downstream of the laser mark component 140 and used for reeling the pole piece.

In this embodiment, the mounting frame 110 is a bearing plate-shaped structure, the unreeling component 120, the laser tab cutting component 130, the laser mark making component 140 and the reeling component 150 are distributed on the mounting frame 110 at intervals, the unreeling component 120 and the reeling component 150 are respectively arranged at the head end and the tail end of the mounting frame 110, the pole piece is unreeled by the unreeling component 120, the tab cutting operation is performed through the laser tab cutting component 130, then the laser mark making component 140 performs the laser mark making operation, so that a lamination mark is formed on the surface of the pole piece, the lamination mark is the edge of the lamination when the lamination mark is laminated, and the lamination action can be well completed by using the lamination mark. The pole piece after laser marking is wound by the winding assembly 150 to wait for the subsequent lamination process. Here through set up laser cutting utmost point ear subassembly 130 and laser system trace subassembly 140 simultaneously on mounting bracket 110, realize cross cutting and system trace technology simultaneously to, equipment structure is simple, compares in the components of a whole that can function independently setting or make the trace alone, has saved the conversion time between cross cutting and the system trace technology, thereby has promoted the utilization ratio of equipment, and the integrative setting has also improved equipment efficiency simultaneously. Meanwhile, the laser mark making assembly 140 is used for applying a laser beam to the pole piece to form a lamination mark on the surface of the pole piece, and the laser mark making is adopted without adopting a cutting mode, so that on one hand, the subsequent lamination process is facilitated, and on the other hand, the risk of short circuit of equipment is greatly reduced.

It should be noted that, the upstream and the downstream mentioned in this embodiment refer to the upstream or the downstream along the conveying direction of the pole pieces, which can indicate the conveying sequence of the pole pieces, and there is no exact limitation on the actual position and orientation of each component.

In this embodiment, the mounting frame 110 is further provided with a die cutting deviation rectifying assembly 111, and the die cutting deviation rectifying assembly 111 is disposed at the upstream of the laser tab cutting assembly 130 and is used for rectifying deviation of the pole piece entering the laser tab cutting assembly 130. Specifically, the die cutting deviation rectifying assembly 111 is further located at the downstream of the unwinding assembly 120, and the die cutting deviation rectifying assembly 111 adopts a roller to rectify deviation of the pole piece, so as to ensure that the pole piece enters the pole piece center of the laser tab cutting assembly 130, thereby ensuring the accuracy of laser tab cutting.

It should be noted that, the basic structure and implementation principle of the die-cutting deviation rectifying assembly 111 herein can also refer to the existing deviation rectifying equipment, and is not limited herein.

It is noted that the laser tab cutting assembly 130 may be used to cut the edges of the pole pieces using a laser to form the tab structure. Of course, the laser can realize the following cutting function, so as to ensure that the pole piece can realize the action of cutting the pole lug in the moving process.

In this embodiment, the mounting frame 110 is further provided with a mark making deviation rectifying assembly 113, and the mark making deviation rectifying assembly 113 is arranged at the upstream of the laser mark making assembly 140 and is used for rectifying the deviation of the pole piece entering the laser mark making assembly 140. Specifically, the mark making deviation rectifying assembly 113 is further provided with a downstream of the laser tab cutting assembly 130, and the roller wheels are used for rectifying deviation of the pole pieces, so that the pole pieces enter the pole piece center of the mark making deviation rectifying assembly 113, and the accuracy of laser mark making is further ensured.

It should be noted that, the specific structure and implementation principle of the mark making deviation rectifying assembly 113 here are the same as or similar to those of the die cutting deviation rectifying assembly 111, and reference may be made to the existing deviation rectifying equipment, which is not limited herein.

In this embodiment, the mounting frame 110 is further provided with an indentation tension assembly 115, and the indentation tension assembly 115 is disposed between the laser tab cutting assembly 130 and the laser indentation assembly 140, and is used for adjusting the tension of the pole piece between the laser tab cutting assembly 130 and the laser indentation assembly 140. Specifically, the mark making tension assembly 115 is disposed at the downstream of the laser tab cutting assembly 130 and at the upstream of the mark making deviation rectifying assembly 113, and can adjust the tension of the pole piece after the laser tab cutting operation, so as to ensure that the tension of the pole piece is in a proper range, and the pole piece can be smoothly conveyed.

In this embodiment, a driving assembly 117 is further disposed on the mounting frame 110, and the driving assembly 117 is disposed between the laser tab cutting assembly 130 and the laser marking assembly 140 for driving the movement of the pole piece. Specifically, the driving assembly is disposed downstream of the sharp tab cutting assembly and upstream of the mark making tension assembly 115, and is capable of driving the tab to move and providing power for the tab in the laser tab cutting stage. The driving assembly 117 may include a driving roller and a driven roller, wherein the driving roller is connected to a motor, the driving roller and the driven roller are pressed on the pole piece from two sides, and the driving roller actively rotates to drive the pole piece to move.

Further, the mounting frame 110 is further provided with a first buffer assembly 160, a second buffer assembly 170 and a marking driving member 180, wherein the first buffer assembly 160 is located downstream of the laser tab cutting assembly 130 and upstream of the laser marking assembly 140; the second buffer assembly 170 is located downstream of the laser marking assembly 140 and upstream of the winding assembly 150, the marking driver 180 is located between the first buffer assembly 160 and the second buffer assembly 170, the marking driver 180 is used for intermittently driving the pole pieces to pass through the laser marking assembly 140, the first buffer assembly 160 is used for buffering the pole pieces when the marking driver 180 stops, and the second buffer assembly 170 is used for buffering the pole pieces when the marking driver 180 drives.

In the present embodiment, the first buffer component 160 is disposed downstream of the mark making deviation rectifying component 113 for buffering the pole piece before making a mark, and the second buffer component 170 is disposed downstream of the mark making driving component 180 for buffering the pole piece after making a mark. Specifically, the mark making driving component 180 is configured to drive the pole pieces to move, and when the mark making driving component 180 stops moving, the first buffer component 160 can buffer the pole pieces at this time because the pole pieces upstream of the first buffer component 160 are continuously transported, and the pole pieces downstream of the first buffer component 160 are stationary. Meanwhile, the pole piece at the downstream of the second buffer memory assembly 170 is continuously conveyed, while the pole piece at the upstream of the second buffer memory assembly 170 is static, and at this time, the second buffer memory assembly 170 can realize the function of releasing the pole piece. When the mark making driving member 180 starts to move, the pole piece at the upstream of the first buffer assembly 160 is continuously conveyed, and the pole piece at the downstream of the first buffer assembly 160 is also in a moving state under the driving of the mark making driving member 180, so that the first buffer assembly 160 can play a role in releasing the pole piece. Meanwhile, the upstream and the downstream of the second buffer module 170 are both in motion states, so the second buffer module 170 can play a role in buffering pole pieces.

It should be noted that, the speed of the indentation driving member 180 driving the pole piece to move should be greater than the speed of the driving assembly 117 driving the pole piece to move, and also greater than the speed of the winding assembly 150 winding the pole piece. Preferably, the speed of the pole piece at the upstream of the first buffer assembly 160 is kept constant, the speed of the pole piece at the downstream of the second buffer assembly 170 is kept constant, and the unwinding speed and the winding speed of the pole piece are consistent, so that the pole piece can realize uniform motion. Meanwhile, the mark making driving part 180 drives the pole piece to be in a periodic motion state of acceleration, constant speed and deceleration, and the pole piece is ensured to be in a static state when the laser mark making action is carried out by combining the first cache component 160 and the second cache component 170, so that the static mark making process is realized.

The first buffer assembly 160 includes a first buffer roller 161 and a first driving member 163, the first driving member 163 is disposed on the mounting frame 110, the first buffer roller 161 is in transmission connection with the first driving member 163 and is used for rolling and fitting on the surface of the pole piece, and the first buffer roller 161 is driven by the first driving member 163 to push the pole piece to reciprocate along the direction perpendicular to the conveying direction, so as to buffer and release the pole piece.

The second buffer assembly 170 includes a second buffer roller 171 and a second driving member 173, the second driving member 173 is disposed on the mounting frame 110, the second buffer roller 171 is in transmission connection with the second driving member 173 and is used for rolling and adhering to the surface of the pole piece, and the second buffer roller 171 is driven by the second driving member 173 to push the pole piece to reciprocate along the direction perpendicular to the conveying direction, so as to buffer and release the pole piece.

In this embodiment, the first driving element 163 and the second driving element 173 are both motors, and meanwhile, the first driving element 163 is connected to the first buffer roller 161 through a first lead screw, and the first buffer roller 161 is engaged with the first lead screw through a first thread bushing, so that the first buffer roller 161 can reciprocate along the extending direction of the first lead screw when the first driving element 163 drives the first lead screw to rotate. The second driving member 173 is connected to the second buffer roller 171 through a second screw rod, and the second buffer roller 171 is engaged to the second screw rod through a second thread bushing, so that the second buffer roller 171 can reciprocate along the extending direction of the second screw rod when the second driving member 173 drives the second screw rod to rotate.

It should be noted that, in the present embodiment, by providing the first buffer unit 160, the second buffer unit 170, and the trace making driving unit 180, a static trace making process can be implemented. Specifically, when static mark making is realized, the pole piece winding and unwinding runs at a constant speed, the mark making driving member 180 pulls the pole piece to do acceleration and deceleration intermittent motion, the pole piece stops after being driven for a certain distance, the laser mark making assembly 140 starts a mark making process at the moment, the winding and unwinding still runs at a constant speed, the pole piece is cached by the first cache assembly 160, and the pole piece is released by the second cache assembly 170. After the trace making process receives water, the trace making driving member 180 pulls the pole piece again to move for a period, at this time, the first cache assembly 160 releases the pole piece, the second cache assembly 170 caches the pole piece, and the processes are circulated in sequence, so that the static trace making process of the pole piece is realized.

The laser marking assembly 140 includes a plurality of laser markers spaced apart from each other and having channels formed therein through which the pole pieces pass, the plurality of laser markers being configured to form at least two lamination marks on each of the two side surfaces of the pole pieces. In this embodiment, the plurality of laser markers include a first laser marker 141 and a second laser marker 143, the first laser marker 141 and the second laser marker 143 are disposed opposite to each other and form a channel through which the pole piece passes, the first laser marker 141 is used for forming at least two lamination marks on one side surface of the pole piece, and the second laser marker 143 is used for forming at least two lamination marks on the other side surface of the pole piece. Specifically, the first laser mark maker 141 can form two lamination marks on one side surface of the pole piece, and the second laser mark maker 143 can form two lamination marks on the other side surface of the pole piece, so that when the pole piece is subjected to a static mark making process, 4 lamination marks can be prepared at one time, and the efficiency of the equipment is greatly improved.

It should be noted that, the two laser markers used in this embodiment are only for illustration, and in other preferred embodiments of the present invention, 2, 3, or 4 laser markers may be respectively disposed on two sides of the pole piece, so that a plurality of lamination marks can be formed on the surface of the pole piece at the same time, and the specific number of the laser markers is not limited herein.

In this embodiment, each laser marker has a light emitting module, and the light emitting module is configured to adjust a light emitting angle of the laser marker, so that the laser marker traces the pole piece. Specifically, the first laser marker 141 has a first light emitting module, and the first light emitting module is configured to adjust a light emitting angle of the first laser marker 141, so that the first laser marker 141 traces the pole piece; the second laser mark maker 143 has a second light emitting module, and the second light emitting module is used for adjusting the light emitting angle of the second laser mark maker 143, so that the second laser mark maker 143 can trace the pole piece. Here, the first light-emitting module can adjust the laser emission angle of the first laser marker 141, and the second light-emitting module can scribe the laser emission angle of the second laser marker 143, so that the function of cutting the pole piece after the first laser marker 141 and the second laser marker 143 are kept stationary can be realized. Of course, in other preferred embodiments of the present invention, the laser can be kept stationary relative to the pole piece by arranging the cut-following driving member to drive the laser to move, and the cut-following function can be realized.

Here, both the first laser marker 141 and the second laser marker 143 can realize the cut-following function, and thus a dynamic marking process can be realized. Specifically, when dynamic mark making is realized, the whole pole piece is in a constant-speed running state, the mark making driving piece 180 also drives the pole piece to run at a constant speed, and the driving running speed of the mark making driving piece is consistent with the driving running speed of the driving assembly 117, so that the pole piece is kept in a constant-speed state everywhere. At this time, the first laser mark maker 141 and the second laser mark maker 143 chase and cut the pole piece to complete the mark making process, and the first buffer assembly 160 and the second buffer assembly 170 do not buffer the pole piece and can be used as a fixed roller, so that the pole piece dynamic mark making process is realized.

In this embodiment, the selection of the dynamic marking process and the static marking process may be determined according to the requirement, the efficiency of the dynamic marking process is higher, and the precision of the static marking process is higher.

It should be noted that in this embodiment, the mounting frame 110 is further provided with a plurality of rollers to achieve the function of intermediate transmission and support of the pole pieces, which is not described herein one by one.

In this embodiment, an unwinding tension assembly 121 is further disposed downstream of the unwinding assembly 120, so as to adjust the unwinding tension, and specifically, the unwinding tension assembly 121 is disposed between the unwinding assembly 120 and the die cutting deviation rectifying assembly 111. Meanwhile, a winding tension component 151 is further disposed upstream of the winding component 150, which can adjust winding tension, and specifically, the winding tension component 151 is disposed between the second buffer component 170 and the winding component 150. The basic structure and implementation principle of the unwinding tension assembly 121 and the winding tension assembly 151 are the same as or similar to those of the mark making tension assembly 115.

It should be noted that in this embodiment, after the pole piece is unreeled by the unreeling component 120, the pole piece may sequentially pass through the unreeling tension component 121, the die cutting deviation correcting component 111, the laser pole piece cutting component 130, the driving component 117, the mark making tension component 115, the mark making deviation correcting component 113, the first buffer component 160, the laser mark making component 140, the mark making driving component 180, the second buffer component 170, and the reeling tension component 151, and finally be reeled by the reeling component 150.

In conclusion, the laser die-cutting and mark-making integrated machine 100 provided by the embodiment realizes die-cutting and mark-making processes by simultaneously arranging the laser tab assembly 130 and the laser mark-making assembly 140 on the mounting frame 110, and has a simple structure, saves the conversion time between the die-cutting and mark-making processes compared with split arrangement or independent mark-making, thereby improving the utilization rate of the equipment, and simultaneously improving the equipment efficiency due to integral arrangement. Meanwhile, the laser mark making assembly 140 is used for applying a laser beam to the pole piece to form a lamination mark on the surface of the pole piece, and the laser mark making is adopted without adopting a cutting mode, so that on one hand, the subsequent lamination process is facilitated, and on the other hand, the risk of short circuit of equipment is greatly reduced. Meanwhile, a static marking process or a dynamic marking process can be selected according to requirements, and the adaptability is better.

The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.