CN205764448U - A kind of laser cutting device - Google Patents

Abstract

The utility model discloses a laser cutting device, which comprises: a base plate; a laser emitter host, the host is movably connected to the base plate, and can move up and down relative to the base plate; the host and the cutting head are supported by The arm is connected; the pole piece clamp is movably connected to the base, and the angle between the pole piece clamp and the bottom plate can be adjusted; wherein, both ends of the pole piece clamp are provided with exhaust Holes; exhaust duct, the exhaust duct is arranged on the base plate, the exhaust duct is connected with the exhaust hole, so as to provide the means for sucking or blowing air to the fixed object on the pole piece fixture airway. The device provided by the utility model is used to solve the technical problem that the laser cutting device in the prior art will produce small particles that destroy the gel electrolyte. Provided is a laser cutting device that can be applied to cutting pole pieces of a novel gel lithium ion battery.

Description

A laser cutting device

technical field

The utility model relates to the technical field of battery manufacturing equipment, in particular to a laser cutting device.

Background technique

Laser cutting is to focus the laser emitted from the laser into a high-power-density laser beam through the optical path system. The laser beam is irradiated on the surface of the workpiece to make the workpiece reach the melting point or boiling point. At the same time, the high-pressure gas coaxial with the beam will melt or gas The metal is blown away, and with the movement of the beam and the relative position of the workpiece, the material will eventually form a slit, so as to achieve the purpose of cutting. Laser cutting process replaces the traditional mechanical knife with an invisible beam. It has the characteristics of high speed, high precision and high adaptability. It also has the advantages of cutting gap, small heat-affected zone, good cutting surface quality, no noise during cutting, The cutting process is easy to realize automatic control, not limited to the limitation of cutting pattern, and the processing cost is low. At present, laser cutting has been widely used in industrial sectors such as automobiles, rolling stock manufacturing, aviation, chemicals, electrical appliances and electronics, petroleum and metallurgy.

As the country vigorously promotes the development of the energy vehicle industry, the domestic battery industry has ushered in new opportunities for development. Major domestic lithium battery companies have also invested heavily in the research and development and improvement of new lithium-ion battery technology and manufacturing processes. Laser cutting Processing pole pieces have also gradually entered the cutting field of lithium battery pole pieces. The pole piece of a lithium battery is composed of two upper and lower active material layers of 100-200 microns each and a current collector foil layer in the middle. The laser cutting machine uses the thermal effect of a high-intensity laser beam to quickly cut off the "sandwich" structure pole piece without contacting the pole piece. Sheet contact processing greatly reduces the cost of equipment consumables and improves processing efficiency.

However, because laser cutting uses its high energy to instantly burn through the pole piece, the energy concentration is very high, so a lot of dust and metal spatter will be generated during the processing. These small particles will splash on the surface of the pole piece and cause damage to the gel electrolyte, so they cannot be applied to the cutting of the new gel lithium-ion battery pole piece.

That is to say, there is a technical problem that the laser cutting device in the prior art will produce small particles that damage the gel electrolyte, so that it cannot be applied to the cutting of the pole pieces of the new gel lithium-ion battery.

Utility model content

By providing a laser cutting device, the utility model solves the technical problem that the laser cutting device in the prior art will produce small particles that destroy the gel electrolyte, resulting in that it cannot be applied to the cutting of the pole pieces of the new gel lithium ion battery.

In order to solve the above technical problems, the utility model provides the following technical solutions:

A laser cutting device, comprising:

floor;

The host of the laser transmitter, the host is movably connected to the base plate, and can move up and down relative to the base plate; the host is connected to the cutting head through a support arm;

pole piece clamp, the pole piece clamp is movably connected to the base, and the angle between the pole piece clamp and the bottom plate can be adjusted; wherein, both ends of the pole piece clamp are provided with air vents;

An exhaust duct, the exhaust duct is arranged on the bottom plate, the exhaust duct is connected to the exhaust hole, so as to provide an air channel for sucking or blowing air to the objects fixed on the pole piece fixture .

Optionally, the main engine is movably connected to the base plate through a hydraulic lifting arm; the hydraulic lifting arm is provided with a liftable support; the main engine is fixed on the lifting support.

Optionally, the hydraulic lifting arm is provided with a lifting knob to control the lifting of the main engine.

Optionally, the device further includes: a beam expander, arranged between the main machine and the cutting head, to expand the laser beam generated by the main machine; the vibrating mirror is rotatably fixed on the On the cutting head, the angle of the laser beam passing through the beam expander is adjusted by reflection; the focusing system is fixed on the end of the cutting head to converge the laser beam reflected by the galvanometer , and then emit the converged laser beam out of the cutting head.

Optionally, the host of the laser transmitter is a violet laser, so as to reduce the thermal impact of laser cutting on the gel electrolyte when the object is a gel lithium battery pole piece.

Optionally, the pole piece clamp is movably connected to the base by rotating screws.

Optionally, the pole piece clamp is hollow to clamp the edge of the object, so that the region to be cut of the object is in a suspended state.

Optionally, the exhaust pipe includes a first air port and two second air ports communicated with the first air port; wherein, the two second air ports are respectively connected to the exhaust holes at both ends of the pole piece fixture .

Optionally, the device further includes: an inert gas source, the inert gas source communicates with the first gas port, so that when cutting the object, it passes through the first gas port and the two second gas ports in sequence Blow inert gas to the surface of the object through the exhaust holes at both ends of the pole piece fixture.

Optionally, the device further includes: an air extractor, which communicates with the first air port, so that when cutting the object, it passes through the exhaust holes at both ends of the pole piece holder, the The two second air ports and the first air port extract air from the surface of the object.

One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:

1. In the device provided in the embodiment of the present application, vent holes are provided at both ends of the pole piece fixture, and an exhaust pipe communicating with the vent hole is also provided to provide support for objects fixed on the pole piece fixture. The air channel for pumping or blowing air can realize the removal of cutting waste gas and metal particles in time when cutting objects, and can also provide a suitable gas atmosphere for the cutting environment to prevent the organic gel electrolyte from burning, providing a A laser cutting device that can be applied to the cutting of new gel lithium-ion battery pole pieces.

2. In the device provided in the embodiment of the present application, the host of the laser transmitter is set to be a violet laser, which can minimize the thermal impact of laser cutting on the gel electrolyte and reduce the failure rate of cutting.

3. In the device provided in the embodiment of the present application, the pole piece fixture is set to be hollow, so that the pole piece can be suspended and cut, which is convenient for cutting the pole piece coated with gel electrolyte, prevents the gel electrolyte from being squeezed, and reduces the failure rate of cutting .

4. In the device provided in the embodiment of the present application, a beam expander is set to expand the laser beam generated by the host, and then the angle of the laser beam passing through the beam expander is adjusted through the vibration mirror to complete the cutting movement. Finally, through the focusing system, the laser beam reflected by the galvanometer is converged, and the converged laser beam is used as the cutting laser. Compared with the traditional laser knife mold commonly used for cutting pole pieces in the current market, it can reduce the occurrence of curling and cutting. The surface is not smooth, there are product defects such as burrs, and the product reliability is improved.

Description of drawings

In order to illustrate the technical solution in the embodiment of the utility model more clearly, the accompanying drawings that need to be used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only embodiments of the utility model , for those skilled in the art, other drawings can also be obtained according to the provided drawings on the premise of not paying creative efforts.

Fig. 1 is the front view of the laser cutting device in the embodiment of the present application;

Fig. 2 is a perspective view of the laser cutting device in the embodiment of the present application.

detailed description

The embodiment of the present application provides a laser cutting device, which solves the technical problem that the laser cutting device in the prior art will produce small particles that destroy the gel electrolyte, making it unsuitable for cutting the pole pieces of the new gel lithium-ion battery. Provided is a laser cutting device that can be applied to cutting pole pieces of a novel gel lithium-ion battery.

In order to solve the above technical problems, the general idea of the technical solution provided by the embodiment of the present application is as follows:

The application provides a laser cutting device, the device comprising:

floor;

The host of the laser transmitter, the host is movably connected to the base plate, and can move up and down relative to the base plate; the host is connected to the cutting head through a support arm;

pole piece clamp, the pole piece clamp is movably connected to the base, and the angle between the pole piece clamp and the bottom plate can be adjusted; wherein, both ends of the pole piece clamp are provided with air vents;

An exhaust duct, the exhaust duct is arranged on the bottom plate, the exhaust duct is connected to the exhaust hole, so as to provide an air channel for sucking or blowing air to the objects fixed on the pole piece fixture .

In the device provided in the embodiment of the present application, exhaust holes are provided at both ends of the pole piece fixture, and an exhaust pipe communicating with the exhaust hole is also provided to provide suction for objects fixed on the pole piece fixture. The gas or blowing air channel can realize the removal of cutting waste gas and metal particles in time when cutting objects, and can also provide a suitable gas atmosphere for the cutting environment to prevent the organic gel electrolyte from burning, providing an energy A laser cutting device applied to the cutting of new gel lithium-ion battery pole pieces.

In order to better understand the above-mentioned technical solutions, the above-mentioned technical solutions will be described in detail below in conjunction with specific implementation methods. It should be understood that the embodiments of the utility model and the specific features in the embodiments are detailed descriptions of the technical solutions of the application, rather than For the limitation of the technical solutions of the present application, the embodiments of the present application and the technical features in the embodiments can be combined with each other under the condition of no conflict.

In this embodiment, a laser cutting device is provided, please refer to Figure 1 and Figure 2, the device includes:

bottom plate 1;

A laser transmitter host 2, the host 2 is movably connected to the base 1, and can move up and down relative to the base 1; the host 2 is connected to the cutting head 4 through a support arm 5;

pole piece clamp 6, the pole piece clamp 6 is movably connected on the base 1, the angle between the pole piece clamp 6 and the base plate 1 can be adjusted; wherein, both ends of the pole piece clamp 6 are provided with There are vent holes 8;

Exhaust duct 9, the exhaust duct 9 is arranged on the bottom plate 1, the exhaust duct 9 is connected to the exhaust hole 8, so as to provide air extraction for the fixed object on the pole piece holder 6 or blown airway.

In a specific implementation process, the laser cutting device can be used for cutting pole pieces coated with a gel electrolyte layer, and can also be used for cutting other battery pole pieces or other objects, which is not limited here.

The structure and method of use of the laser cutting device will be described in detail below in conjunction with Fig. 1 and Fig. 2:

First, the structure of the laser cutting device is introduced.

In the embodiment of the present application, the host 2 is a laser beam generating device, and the host 2 can move up and down relative to the bottom plate 1 .

In the embodiment of the present application, the main engine 2 is movably connected to the base plate 1 through the hydraulic lifting arm 3; the hydraulic lifting arm 3 is provided with a liftable lifting bracket 12; the main engine 2 is fixed on the On the lifting bracket 12.

Further, the hydraulic lifting arm 3 is provided with a lifting knob 13 to control the lifting of the main engine 2 .

Specifically, rotating the lifting button 13 can adjust the hydraulic pressure of the hydraulic lifting arm 3 , thereby controlling the lifting or lowering of the lifting bracket 12 , and then controlling the lifting of the main engine 2 fixed on the lifting bracket 12 .

Of course, in the specific implementation process, the host 2 can also be movably connected to the bottom plate 1 through a column equipped with a bracket, the host 2 is fixed on the bracket, and the bracket is fixed on the column by bolts Above, the support can be lifted and lowered along the column by loosening the bolts, and the support can be fixed at a required height by tightening the bolts, which is not limited here.

In the embodiment of the present application, the device further includes:

A beam expander 14 is arranged between the main machine 2 and the cutting head 4 to expand the laser beam generated by the main machine 2;

The vibrating mirror 15 is rotatably fixed on the cutting head 4 to reflect and adjust the angle of the laser beam passing through the beam expander 14;

Focusing system 16 , the focusing system 16 is fixed on the end of the cutting head 4 to converge the laser beam reflected by the vibrating mirror 15 , and then emit the converged laser beam out of the cutting head 4 .

Further, the focusing system 16 may be a focusing mirror.

Specifically, the cutting laser beam is generated by the laser transmitter host 2 first, then the beam expander 14 expands the laser beam generated by the laser transmitter host 2, and then the vibrating mirror 15 rotates and swings Adjust the angle of the reflected laser beam, reflect the laser beam into the focusing system 16, the focusing system 16 finally converges the laser beam, and emits the laser beam that can be used to cut objects out of the cutting head 4.

In the specific implementation process, the cutting head 4 does not need to move when cutting the workpiece, and the cutting can be completed only by adjusting the angle of the vibrating mirror 15 .

Specifically, the angle of the vibrating mirror 15 is adjusted according to preset requirements, which can be controlled by a computer, a single-chip microcomputer or a circuit board connected to the vibrating mirror 15, and there is no limitation here.

Further, the host of the laser transmitter is a violet laser, so as to reduce the thermal impact of laser cutting on the gel electrolyte when the object is a gel lithium battery pole piece.

In the embodiment of the present application, the angle between the pole piece clamp 6 and the bottom plate 1 can be adjusted.

Further, the pole piece clamp 6 is movably connected to the base 1 by rotating the screw 7 .

In the embodiment of the present application, the pole piece clamp 6 is hollow, and is used to clamp the edge of the object to fix the object, so that the area to be cut of the object is in a suspended state.

For example, the pole piece clamp 6 may be a ring clamp, or a clamp that only clamps objects at both ends, which is not limited here.

Specifically, enabling the pole piece to be cut in the air can make it easier to cut the pole piece coated with gel electrolyte, prevent the gel electrolyte from being squeezed, and reduce the failure rate of cutting.

In a specific implementation process, the exhaust pipe 9 includes a first gas port 10 and two second gas ports 11 communicating with the first gas port 10; wherein, the two second gas ports 11 are respectively connected to the pole piece The vent holes 8 at both ends of the clamp 6 are connected.

In order to enhance the blowing or suction strength of the object to be cut, more than two exhaust holes 8 can also be set on the pole piece fixture 6, and more than two second air ports can be set correspondingly on the exhaust pipe 9 11.

Next, the usage method of the laser cutting device will be introduced.

In the specific implementation process, taking the object as a pole piece as an example,

First place the pole piece to be cut through the pole piece fixture 6, the bottom of the pole piece fixture 6 is provided with a rotating screw in contact with the bottom plate 1, and the angle between the pole piece fixture 6 and the bottom plate 1 is controlled by adjusting the screw;

When cutting pole pieces with fixed specifications, the hydraulic lifting arm is automatically adjusted through the pre-calculated parameters of the program, thereby adjusting the main machine 2 fixed on the lifting bracket 12, and then controlling the vibration mirror 15 to rotate according to the fixed program to complete the cutting.

There are at least two methods for airflow control during cutting:

First, when the device works in the air, the inert gas is passed through the first gas port 10, and then connected to the exhaust hole 8 of the pole piece holder 6 through the two second gas ports 11, so as to Blow air on the surface of the pole piece.

That is, the device, further comprising:

An inert gas source, the inert gas source communicates with the first gas port 10, so as to pass through the first gas port 10, the two second gas ports 11 and the pole piece holder 6 in sequence when cutting the object The exhaust holes 8 at both ends blow inert gas on the surface of the pole piece.

Specifically, the addition of auxiliary inert gas during laser cutting can improve the timely removal of waste gas dust and metal particles generated by cutting on the one hand, and on the other hand, the inert gas can also cool the workpiece and prevent the organic gel electrolyte from burning.

Second, when the device is in an inert gas environment such as a glove box, the inert gas flows in from the upper and lower surfaces of the pole piece, flows out from the exhaust hole 8, and merges into the first gas port 10 through the two second gas ports 11, It is then pumped out.

That is, the device also includes:

An air extractor, the air extractor communicates with the first air port 10, so that when cutting the pole piece, it passes through the exhaust holes 8 at both ends of the pole piece clamp 6 and the two second air ports 11 in sequence. and the first air port 10 to extract air from the surface of the pole piece.

It should be noted that the above-mentioned first method has a wide range of applications and is suitable for workpieces that are not sensitive to the air atmosphere environment. For materials that are sensitive to moisture and oxygen such as gel electrolytes, it is best to use the above-mentioned second working mode. Not only can smoke and metal particles be extracted in time, but also can cool the workpiece, prevent moisture and oxygen from reacting with the gel electrolyte, and prevent carbonization of organic substances.

Further, the inert gas is nitrogen.

The above-mentioned technical solutions in the embodiments of the present application have at least the following technical effects or advantages:

1. In the device provided in the embodiment of the present application, vent holes are provided at both ends of the pole piece fixture, and an exhaust pipe communicating with the vent hole is also provided to provide support for objects fixed on the pole piece fixture. The air channel for pumping or blowing air can realize the removal of cutting waste gas and metal particles in time when cutting objects, and can also provide a suitable gas atmosphere for the cutting environment to prevent the organic gel electrolyte from burning, providing a A laser cutting device that can be applied to the cutting of new gel lithium-ion battery pole pieces.

2. In the device provided in the embodiment of the present application, the host of the laser transmitter is set to be a violet laser, which can minimize the thermal impact of laser cutting on the gel electrolyte and reduce the failure rate of cutting.

3. In the device provided in the embodiment of the present application, the pole piece fixture is set to be hollow, so that the pole piece can be suspended and cut, which is convenient for cutting the pole piece coated with gel electrolyte, prevents the gel electrolyte from being squeezed, and reduces the failure rate of cutting .

4. In the device provided in the embodiment of the present application, a beam expander is set to expand the laser beam generated by the host, and then the angle of the laser beam passing through the beam expander is adjusted through the vibration mirror to complete the cutting movement. Finally, through the focusing system, the laser beam reflected by the galvanometer is converged, and the converged laser beam is used as the cutting laser. Compared with the traditional laser knife mold commonly used for cutting pole pieces in the current market, it can reduce the occurrence of curling and cutting. The surface is not smooth, there are product defects such as burrs, and the product reliability is improved.

While preferred embodiments of the present invention have been described, additional changes and modifications to these embodiments can be made by those skilled in the art once the basic inventive concept is appreciated. Therefore, the appended claims are intended to be interpreted to cover the preferred embodiment and all changes and modifications which fall within the scope of the present invention.

Obviously, those skilled in the art can make various changes and modifications to the utility model without departing from the spirit and scope of the utility model. In this way, if these modifications and variations of the utility model fall within the scope of the claims of the utility model and equivalent technologies thereof, the utility model is also intended to include these modifications and variations.

Claims (10)

1. a laser cutting device, it is characterised in that described device includes:

Base plate；

Generating laser main frame, being connected on described base plate of described host activities, and lifting moving can be made by the most described base plate；Described main frame is connected by support arm with cutting head；

Pole piece fixture, movable being connected on described base plate of described pole piece fixture, described pole piece fixture can regulate with the angle of described base plate；Wherein, the two ends of described pole piece fixture are provided with steam vent；

Discharge duct, described discharge duct is arranged on described base plate, and described discharge duct is connected with described steam vent, to provide the air flue that object fixing on described pole piece fixture is bled or blown.

2. device as claimed in claim 1, it is characterised in that described main frame is by movable being connected on described base plate of hydraulic lifting arm；It is provided with liftable lifting support on described hydraulic lifting arm；Described main frame is fixed on described lifting support.

3. device as claimed in claim 2, it is characterised in that be provided with lifting knob on described hydraulic lifting arm, to control the lifting of described main frame.

4. device as claimed in claim 1, it is characterised in that also include:

Beam expanding lens, is arranged between described main frame and described cutting head, expands with the laser beam producing described main frame；

Galvanometer, rotatable is fixed on described cutting head, adjusts the angle of the laser beam through described beam expanding lens with reflection；

Focusing system, described focusing system is fixed on the end of described cutting head, so that the laser beam after described vibration mirror reflected is converged, then will converge after radiating laser beams go out described cutting head.

5. device as claimed in claim 1, it is characterised in that described generating laser main frame is violet laser, with when described object is for gel lithium battery pole piece, reduces the cut heat affecting to gel electrolyte.

6. device as claimed in claim 1, it is characterised in that described pole piece fixture is by movable being connected on described base plate of rotary screw.

7. device as claimed in claim 1, it is characterised in that described pole piece fixture is hollow form, to clamp the edge of described object, and then makes the cutting zone that needs of described object be in vacant state.

8. device as claimed in claim 1, it is characterised in that described discharge duct includes the first QI KOU and two the second QI KOU connected with described first QI KOU；Wherein, said two the second QI KOU steam vent with described pole piece fixture two ends respectively is connected.

9. device as claimed in claim 8, it is characterised in that also include:

Inert gas source, described inert gas source connects with described first QI KOU, and with when cutting described object, the steam vent passing sequentially through described first QI KOU, said two the second QI KOU and described pole piece fixture two ends carries out blown inert gas to described body surface.

10. device as claimed in claim 8, it is characterised in that also include:

Air exhauster, described air exhauster connects with described first QI KOU, when cutting described object, to pass sequentially through the steam vent at described pole piece fixture two ends, said two the second QI KOU and described first QI KOU and to bleed described body surface.