KR102036544B1 - Device for Welding Electrode Tabs Comprising Vision Inspection Part - Google Patents

Abstract

The present invention is a device for welding the electrode tabs of the same polarity in the electrode assembly for secondary batteries that includes at least one electrode tab of the same polarity in at least one of the positive electrode and the negative electrode, the electrode assembly for fixing and supporting the electrode assembly Fixing part; A welding unit configured to perform welding to the overlapping portion in a state in which the electrode tabs having the same polarity overlap with each other; A vision inspection part for inspecting a position of the weld part according to the overlapping state of the electrode tabs; A transfer part configured to adjust a position of a weld part in response to an inspection result of the vision inspection part; And a control unit for controlling the operation of the transfer unit and the welding unit in response to the inspection result in the vision inspection unit.

Description

Device for Welding Electrode Tabs Comprising Vision Inspection Part

The present invention relates to an electrode tab welding device comprising a vision inspection.

Recently, the increase in the price of energy sources due to the depletion of fossil fuels, interest in environmental pollution is amplified, and the demand for environmentally friendly alternative energy sources has become an indispensable factor for future life. Accordingly, researches on various power production technologies such as nuclear power, solar energy, wind power, tidal power, etc. continue, and power storage devices for more efficient use of the generated energy are also drawing attention.

In particular, as technology development and demand for mobile devices increase, the demand for batteries as energy sources is rapidly increasing, and accordingly, a lot of researches on batteries that can meet various needs have been conducted.

Representatively, there is a high demand for square and pouch type secondary batteries that can be applied to products such as mobile phones with a thin thickness in terms of shape of batteries, and high energy density, discharge voltage, and output stability in terms of materials. Demand for lithium secondary batteries such as lithium ion batteries and lithium ion polymer batteries is high.

In addition, the secondary battery is a cylindrical battery and a rectangular battery in which the electrode assembly is embedded in a cylindrical or rectangular metal can according to the shape of the battery case, and a pouch type battery in which the electrode assembly is embedded in a pouch type case of an aluminum laminate sheet. Are classified.

In addition, secondary batteries are classified according to the structure of an electrode assembly having a structure in which a positive electrode, a negative electrode, and a separator interposed between the positive electrode and the negative electrode are formed. Jelly-roll type electrode assembly having a structure wound in a state where a separator is interposed, a stack type electrode assembly in which a plurality of anodes and cathodes cut in units of a predetermined size are sequentially stacked with a separator therebetween In recent years, in order to solve the problems of the jelly-roll type electrode assembly and the stacked electrode assembly, an electrode assembly having an advanced structure which is a mixed form of the jelly-roll type and the stack type, has a predetermined unit. Stacked / foldable electrode having a structure in which positive and negative electrodes are sequentially wound in a state in which unit cells stacked on a separator film are stacked with a separator interposed therebetween Developed body lip.

Among them, the jelly-roll type electrode assembly has been widely used in various fields because of the advantages of easy manufacturing and high energy density per weight.

In particular, when the jelly-roll type electrode assembly is designed to exhibit high power characteristics, the electrode assembly may include at least two electrode tabs having the same polarity to prevent risks such as disconnection and ignition occurring at the electrode tab region. It is composed.

At this time, the electrode tabs of the same polarity are coupled to each other by ultrasonic welding in a superimposed state so that the configuration of the battery cell can be simplified.

FIG. 1 is a schematic view showing a structure before winding of a jelly-roll type electrode assembly exhibiting a conventional high power characteristic, and FIG. 2 is overlapped with welding of positive electrode tabs after the electrode assembly of FIG. 1 is wound. A schematic diagram showing the structure of the site is shown.

Referring to FIGS. 1 and 2, the electrode assembly 100 is manufactured by sequentially stacking the positive electrode sheet 110, the negative electrode sheet 120, and the separator sheet 130 in a rounded shape in an arrow direction.

On one surface of the positive electrode sheet 110 and the negative electrode sheet 120 of the electrode assembly 100 are formed a blank portion 101 in a spaced apart state, respectively, two positive electrode tabs 111 and 112 and negative electrode tabs 121, 122 each protrudes in a direction opposite to each other in a state where they are attached to the uncoated portion 101.

At this time, in the process of winding the positive electrode sheet 110, the negative electrode sheet 120, and the separator sheet 130, the overall thickness of the electrode assembly 100 increases, and thus, the positive electrode tabs ( 111 and 112 overlap and form a predetermined error 201.

In general, the positive electrode tabs 111 and 112 are welded so that the center portion 113 of the overlapping portion is welded to maintain a more stable bonding state, so that the error 201 of the positive electrode tabs 111 and 112 generated during the winding process may occur. Due to), unlike the case of completely overlapping, since the central portion 113 of the overlapping portion is different, the welding position needs to be changed accordingly.

3 is a front view schematically showing the structure of a conventional electrode tab welding apparatus.

Referring to FIG. 3, the electrode tab welding apparatus 300 includes an electrode assembly mounting part 310 in which a jelly-roll type electrode assembly is positioned and fixed in a process in which welding to overlapping portions of the electrode tabs is performed.

However, in the electrode tab welding device 300, in order to adjust the welding position of the electrode tabs, the electrode tab welding device 300 has a structure in which the position of the electrode assembly must be adjusted.

At this time, in the electrode tab welding device 300, the electrode assembly mounting portion 310 in which the electrode assembly is located forms a too narrow space, thereby making it easy to adjust the welding position of the electrode tabs by moving the position of the electrode assembly. Not.

In addition, since all the welding position adjustment process of the electrode tabs must be performed directly by the operator, precise position adjustment is not easy and there is a problem that this process takes too much time.

Moreover, since the error of these electrode tabs is different for each electrode assembly, the welding position adjustment of the electrode tabs must be performed separately for each electrode assembly, which can delay the overall manufacturing process of the electrode assembly. .

Therefore, there is a high need for a technology that can fundamentally solve these problems.

The present invention aims to solve the problems of the prior art as described above and the technical problems that have been requested from the past.

The inventors of the present application, after extensive research and various experiments, as described later, the vision inspection unit for inspecting the position of the welding portion according to the overlapping state of the electrode tabs and the inspection result of the vision inspection portion, By including the transfer unit configured to adjust the position, it is easy to visually check and inspect the overlapping state of the electrode tabs, the transfer unit automatically adjusts the position of the weld in response to the inspection result of the vision inspection unit Thereby, the welding position according to the overlapping state of the electrode tabs can be adjusted more accurately and easily, and this series of processes are automatically operated by an automated system, thus confirming and positioning the welding position of the electrode tabs. By reducing the manpower and time required for adjustment, It confirmed that this can improve the production efficiency, thus completing the present invention.

Electrode tab welding device according to the present invention for achieving this object,

An apparatus for welding electrode tabs of the same polarity in an electrode assembly for secondary batteries, wherein at least one electrode tab of the positive electrode and the negative electrode includes two or more electrode tabs of the same polarity.

An electrode assembly fixing part for fixing and supporting the electrode assembly;

A welding unit configured to perform welding to the overlapping portion in a state in which the electrode tabs having the same polarity overlap with each other;

A vision inspection part for inspecting a position of the weld part according to the overlapping state of the electrode tabs;

A transfer part configured to adjust a position of a weld part in response to an inspection result of the vision inspection part; And

A control unit for controlling the operation of the transfer unit and the welding unit in response to the inspection result in the vision inspection unit;

It may be made of a structure comprising a.

Therefore, through the vision inspection unit, the overlapping state of the electrode tabs can be easily checked and inspected by the naked eye, and the transfer unit automatically adjusts the position of the welding portion in response to the inspection result of the vision inspection unit, thereby overlapping the electrode tabs. The welding position can be adjusted more easily according to the state, and this series of processes are automatically operated by an automated system, thereby reducing the manpower and time required to check and position the welding position of the electrode tabs. By saving, the overall production efficiency of the electrode assembly can be improved.

In one specific example, the electrode assembly has a structure in which a positive electrode sheet, a negative electrode sheet, and a separator sheet interposed between the positive electrode sheet and the negative electrode sheet are wound together;

The electrode tabs having the same polarity may have a structure attached to the uncoated portion of the electrode sheet so as to protrude in the same direction.

In this case, two or more positive electrode tabs may be attached to the uncoated portion of the positive electrode sheet, and two or more negative electrode tabs may be attached to the non-coated portion of the negative electrode sheet.

In addition, each of the positive electrode sheet and the negative electrode sheet has a structure in which the length of one outer periphery has a relatively longer length than the other outer periphery adjacent thereto;

The plain parts for attaching the two or more positive electrode tabs and the two or more negative electrode tabs, respectively, may be formed to be spaced apart from each other at two or more locations in the length direction of the positive electrode sheet and the negative electrode sheet, respectively.

More specifically, the positive electrode sheet, the negative electrode sheet and the separator sheet constituting the electrode assembly has a structure in which the length of one outer periphery is relatively longer than the other outer periphery adjacent thereto, and the electrode assembly has a planar rectangular structure. The positive electrode sheet, the negative electrode sheet and the separator sheet may be made of a structure wound together.

In this case, the respective electrode tabs are attached to the uncoated portion formed in the positive electrode sheet and the negative electrode sheet while being spaced apart from each other, and the electrode tabs of the same polarity protrude in the same direction.

Therefore, in the winding process of the electrode assembly, the electrode tabs are positioned in the same direction, the electrode tabs of the same polarity, and can be easily welded to each other by being designed to overlap each other.

However, in the electrode assembly having such a structure, in the process of winding the positive electrode sheet and the negative electrode sheet, errors in the rotation of the electrode assembly may occur due to errors occurring in the winding method or apparatus, and these errors initially overlap completely with each other. The electrode tabs that are designed to act as a factor may overlap while forming a predetermined error.

In addition, since the electrode assembly has a gradually thick thickness during the winding process, due to this variation in thickness, the overlapping position of the electrode tabs may form an error, and furthermore, the error may be different according to each electrode assembly. There is a problem in that it is necessary to directly adjust the welding position individually according to each electrode assembly.

Accordingly, the electrode tab welding device according to the present invention can automatically detect and inspect the welding position through the vision inspection unit of the electrode tab welding device despite the error of the overlapping state, and in response to the inspection result By automatically adjusting the position of the welding part, manpower and time required for adjusting the welding position can be saved, and thus it can be easily applied without having to change the structure or design of the conventional electrode assembly.

Meanwhile, the electrode tabs having the same polarity may have a structure in which a central portion of the overlapping portion is welded to maintain a stable coupling state.

In general, in order to solve the problem as described above, by forming a welding area for the overlapping portion of the electrode tabs larger than the size of the overlapping portion, all the overlapping portions of the electrode tabs may be welded.

However, in this case, there is a problem that the shape of the overlapping portion of the electrode tabs is deformed or rather damaged, which may cause a defect of the product.

Accordingly, the electrode tab welding apparatus according to the present invention can minimize damage of the electrode tabs and maintain a more stable bonding state by welding the central portion of the overlapping portion of the electrode tabs of the same polarity.

In addition, the electrode tabs having the same polarity may have a structure in which 50% or more of the electrode tabs are welded in an overlapped state so as to maintain a stable bonding state by welding.

Although the electrode tab welding apparatus according to the present invention can maintain the stable bonding state of the electrode tabs by welding the center portion of the overlapping portion in the state where the electrode tabs are overlapped, the welded portion is also the electrode tabs. It may be a structure occupying a predetermined area on the overlapping site.

Accordingly, the electrode tabs having the same polarity are welded in an overlapping state of 50% or more, thereby securing an area of the welded portion and maintaining a more stable bonding state.

On the other hand, the vision inspection unit,

On one side of the overlapping electrode tabs, a sensor for sensing the overlapping portion of the electrode tabs and thus the weld portion;

An identification unit formed on one surface of the overlapping electrode tabs to enable visual inspection of the overlapping state of the electrode tabs and the position of the welding unit; And

A light source for irradiating light from the other surface of the electrode tabs facing the identification part to facilitate identification of the overlapping state of the electrode tabs and thus the position of the welding part in the identification part;

It may be a structure containing.

More specifically, the vision inspection unit may automatically detect the overlapping portion of the electrode tabs and the corresponding weld position through a sensor located on one surface of the overlapping electrode tabs.

In addition, when the vision inspection unit visually inspects through the identification unit located on one side of the overlapping electrode tabs, the overlapping portions of the electrode tabs are more clearly contrasted due to the light emitted from the light source, and thus the overlapping of the electrode tabs is performed. The state and thus the position of the weld can be more clearly identified.

In one specific example, the identification unit,

A camera for capturing an image of the overlapping state of the electrode tabs and the position of the weld portion; And

An image output unit which outputs an image photographed by the camera;

It may be a structure including a.

Therefore, the operator who manipulates the electrode tab welding apparatus can not only easily check and inspect the overlapping state of the electrode tabs and the position of the welded portion at a place spaced from the apparatus, but also by storing the image on a recording medium, Product defects can be tracked so that they can be effectively managed.

In another specific example, the identification unit may be a structure including a window of the transparent member formed to directly identify the overlapping portion of the electrode tabs and the position of the weld.

Thus, the operator can easily confirm and inspect the overlapping state of the electrode tabs and the position of the weld portion in the electrode tab welding device.

In addition, the configuration of the identification unit may not only be configured separately, but may also include all of the above configuration, of course.

For example, the identification part is configured to include both a camera, an image output part, and a window of the transparent member, thereby facilitating the overlapping state of the electrode tabs and the position of the weld part, regardless of the position of the operator between the operations of the electrode tab welding device. Can check and check.

On the other hand, the transfer unit,

An LM guide (LM guide) for adjusting the position of the welded portion by moving in a horizontal direction and / or a vertical direction in a plane coupled to the welded portion;

A ball screw moving the LM guide by rotation in a state connected to the LM guide; And

A servo motor rotating the ball screw in response to a sensing result of a vision inspection unit;

It may be a structure including a.

More specifically, the electrode tab welding apparatus according to the present invention can adjust the position of the welding portion by operating the transfer unit through a control unit in response to the inspection result in the vision inspection unit, and then the welding unit by the operation of the transfer unit When moved to a central portion of the overlapping portions of the electrode tabs, the welding may be performed to the overlapping portions of the electrode tabs by operating the welding unit.

In this case, the transfer unit may include an LM guide, a ball screw and a servomotor.

More specifically, the control unit may rotate the ball screw by operating the servomotor in response to the sensing result from the vision inspection unit, the LM guide connected to the ball screw in a plane by the rotation of the ball screw By moving in the horizontal direction and / or the vertical direction, the position of the welded portion connected to the LM guide can be adjusted.

In this case, the LM guide may have a structure in which the moving direction is controlled by adjusting the rotation direction of the ball screw by the servomotor.

That is, the LM guide can be adjusted in the direction of movement only by adjusting the rotational direction of the servomotor, so that the position of the weld can be adjusted with a more simplified structure.

With this structure, the operator does not need to directly adjust the position of the electrode assembly or the electrode tabs individually according to the overlapping state of the electrode tabs, and by the electrode tab welding device according to the present invention, Since all processes from inspection to welding are performed automatically, the manpower and time required for the process can be saved effectively.

The present invention also provides, by the electrode tab welding device, an electrode assembly welded to electrode tabs having the same polarity and a secondary battery including the electrode assembly, and a device including the secondary battery as a power source. May be any one selected from the group consisting of a mobile phone, a tablet computer, a notebook computer, a power tool, a wearable electronic device, an electric vehicle, a hybrid electric vehicle, a plug-in hybrid electric vehicle, and a power storage device.

Since the specific configuration or structure of the secondary battery or device as described above is known in the art, a detailed description thereof will be omitted herein.

As described above, the electrode tab welding apparatus according to the present invention is configured to adjust the position of the weld in response to the vision inspection unit for inspecting the position of the weld according to the overlapping state of the electrode tabs and the inspection result of the vision inspection unit. By including the transfer portion, the overlapping state of the electrode tabs can be easily visually checked and inspected, and the transfer portion automatically adjusts the position of the weld portion in response to the inspection result of the vision inspection portion, thereby overlapping the electrode tabs. The welding position according to the state can be adjusted more accurately and easily, and this series of processes are automatically operated by an automated system, thus, the manpower required to check and adjust the welding position of the electrode tabs and Save time, improve overall production efficiency of electrode assembly There is an effect that it is possible.

1 is a schematic diagram schematically showing a structure before winding of a jelly-roll type electrode assembly exhibiting a conventional high power characteristic;
FIG. 2 is a schematic diagram schematically showing a structure of an overlapping site where welding of the positive electrode tabs is performed after the electrode assembly of FIG. 1 is wound;
3 is a front view schematically showing the structure of a conventional electrode tab welding apparatus;
4 is a front view schematically showing a front structure of an electrode tab welding apparatus according to one embodiment of the present invention;
FIG. 5 is a schematic diagram showing an enlarged structure of the electrode assembly mounting part of FIG. 4; FIG.
FIG. 6 is a side view schematically showing a side structure of the electrode tab welding apparatus of FIG. 4; FIG.
FIG. 7 is a schematic diagram schematically illustrating a method of adjusting a welding position of electrode tabs using the electrode tab welding apparatus of FIG. 4.

Hereinafter, the present invention will be described in more detail with reference to the drawings according to embodiments of the present invention, but the scope of the present invention is not limited thereto.

4 is a front view schematically showing the front structure of the electrode tab welding apparatus according to an embodiment of the present invention, Figure 5 is a side view schematically showing the side structure of the electrode tab welding apparatus of FIG. 6 is a schematic diagram showing an enlarged structure of the electrode assembly mounting part of FIG. 4.

4 to 6, the electrode tab welding device 400 includes an electrode assembly mounting unit 410, an electrode assembly fixing unit 420, a welding unit 430, a vision inspection unit 440, a servomotor 450, Ball screw 460 and LM guide 470.

The electrode assembly fixing part 420 is positioned at a height corresponding to the electrode assembly mounting part 410, and the electrode assembly is fixed and supported by the electrode assembly fixing part 420 in a space in the electrode assembly mounting part 410. Located.

The welding unit 430 and the vision inspection unit 440 are formed in the electrode assembly mounting unit 410.

The weld 430 is located on the upper surface of the overlapping electrode tabs, and after the welding position is adjusted for the operation of the servomotor 450, the ball screw 460, and the LM guide 470, the overlapping electrode tabs are welded. It is configured to.

The vision inspection unit 440 includes a camera 441, a sensor 442, and a light source 443.

The camera 441 is positioned on the upper surfaces of the overlapping electrode tabs so that an image of the overlapping state of the electrode tabs and the position of the welding part 430 may be captured.

The light source 443 is positioned on the lower surface of the electrode tabs facing the camera 441, and irradiates light to facilitate identification of the overlapping state of the electrode tabs and thus the position of the welding part 430 in the camera 441. ) Structure.

The sensor 442 is configured to detect an overlapping portion of the electrode tabs and thus the position of the welding part 430 on the upper surface of the electrode tabs corresponding to the camera 441.

The servomotor 450, the ball screw 460, and the LM guide 470 are positioned below the electrode tab welding device 400, thereby forming a transfer part.

The servo motor 450 is configured to rotate the ball screw 460 in response to the overlapping portion of the electrode tabs sensed by the sensor 442 and the position of the welding part 430.

The ball screw 460 is connected to the servo motor 450 and the LM guide 470, and rotates according to the operation of the servo motor 450, thereby moving the LM guide 470.

The LM guide 470 is connected to the ball screw 460 and the weld 430, and by moving the weld 430 by the rotation of the ball screw 460, the welding position can be adjusted, the ball screw 460 It is configured to adjust the moving direction and the moving distance of the welding portion 430 by the rotation direction and the rotation amount.

In other words, the sensor 442 senses the overlapping portion of the electrode tabs and the position of the welding portion 430 accordingly, and transmits a signal thereof to the controller, and the controller responds to the signal from the sensor 442 to provide a servo. By operating the motor 450, the rotation direction and the rotation amount of the ball screw 460 are adjusted to move the LM guide 470, whereby the position of the weld 430 can be adjusted more easily and precisely.

FIG. 7 schematically illustrates a method of adjusting the welding position of electrode tabs using the electrode tab welding apparatus of FIG. 4.

Referring to FIG. 7, when viewed through the image output unit 444, the first positive electrode tab 711 and the second positive electrode tab 712 of the electrode assembly 700 form a predetermined error and have a predetermined error of about 60%. Areas overlap.

Due to this error, the position of the weld is not located at the central portion of the overlapping portion of the first positive electrode tab 711 and the second positive electrode tab 712, and thus the position 721 of the weld portion is changed to the positive electrode tabs 711, 712. It is necessary to move to the center portion 722 of the overlapping portion of the ().

Accordingly, the sensor transmits a signal for the center portion 722 of the overlapping portions of the positive electrode tabs 711 and 712 and the position 721 of the weld portion to the controller, and the controller responds to the signal from the sensor to the servomotor. By controlling its operation, the LM guide is moved by the rotation of the ball screw.

Thereafter, the weld connected to the LM guide moves in the direction D2 perpendicular to the projecting direction D1 of the positive electrode tabs 711, 712, whereby the center portion 722 of the overlapping portion of the positive electrode tabs 711, 712. Go to).

By the movement of the weld, in the state where the center portion 722 of the overlapping portion of the positive electrode tabs 711, 712 coincides with the position 721 of the weld portion, the weld portion is the central portion of the overlapping portion of the positive electrode tabs 711, 712. By performing ultrasonic welding on 722, the first positive electrode tab 711 and the second positive electrode tab 712 are joined.

Those skilled in the art to which the present invention pertains will be able to perform various applications and modifications within the scope of the present invention based on the above contents.

Claims (15)

An apparatus for welding electrode tabs of the same polarity in an electrode assembly for secondary batteries, wherein at least one electrode tab of the positive electrode and the negative electrode includes two or more electrode tabs of the same polarity.
An electrode assembly fixing part for fixing and supporting the electrode assembly;
A welding unit configured to perform welding to the overlapping portion in a state in which the electrode tabs having the same polarity overlap with each other;
A vision inspection part for inspecting a position of the weld part according to the overlapping state of the electrode tabs;
A transfer part configured to adjust a position of a weld part in response to an inspection result of the vision inspection part; And
A control unit for controlling the operation of the transfer unit and the welding unit in response to the inspection result in the vision inspection unit;
Including,
The vision inspection unit,
On one side of the overlapping electrode tabs, a sensor for sensing the overlapping portion of the electrode tabs and thus the weld portion;
An identification unit formed on one surface of the overlapping electrode tabs to enable visual inspection of the overlapping state of the electrode tabs and the position of the welding unit; And
A light source for irradiating light from the other surface of the electrode tabs facing the identification part to facilitate identification of the overlapping state of the electrode tabs and thus the position of the welding part in the identification part;
Electrode tab welding device comprising a. The method of claim 1, wherein the electrode assembly has a structure in which a positive electrode sheet, a negative electrode sheet, and a separator sheet interposed between the positive electrode sheet and the negative electrode sheet are wound together;
The electrode tab welding apparatus of the same polarity is attached to the uncoated portion of the electrode sheet in a form protruding in the same direction. The electrode tab welding apparatus according to claim 2, wherein at least two positive electrode tabs are attached to the uncoated portion of the positive electrode sheet, and at least two negative electrode tabs are attached to the uncoated portion of the negative electrode sheet. The method according to claim 3, wherein the positive electrode sheet and the negative electrode sheet each has a structure in which the length of one outer periphery has a relatively long length compared to the other outer periphery adjacent thereto;
An uncoated portion for attaching two or more positive electrode tabs and two or more negative electrode tabs, respectively, is formed to be spaced apart from each other at two or more locations in the longitudinal direction of the positive electrode sheet and the negative electrode sheet, respectively. The electrode tab welding apparatus according to claim 1, wherein the electrode tabs of the same polarity are welded to a central portion of the overlapping portion so as to maintain a stable bonding state. The electrode tab welding apparatus according to claim 1, wherein the electrode tabs having the same polarity are welded in an overlapping state of 50% or more so as to maintain a stable bonding state by welding. delete The method of claim 1, wherein the identification unit,
A camera for capturing an image of the overlapping state of electrode tabs and the position of the weld portion; And
An image output unit which outputs an image photographed by the camera;
Electrode tab welding device comprising a. The electrode tab welding apparatus according to claim 1, wherein the identification part comprises a window of a transparent member formed to visually identify the overlapping portion of the electrode tabs and the position of the welding part. The method of claim 1, wherein the transfer unit,
An LM guide (LM guide) for adjusting the position of the welded portion by moving in a horizontal direction and / or a vertical direction in a plane coupled to the welded portion;
A ball screw moving the LM guide by rotation in a state connected to the LM guide; And
A servo motor rotating the ball screw in response to a sensing result of a vision inspection unit;
Electrode tab welding device comprising a. The electrode tab welding apparatus according to claim 10, wherein the LM guide is controlled by adjusting a rotational direction of the ball screw by the servomotor. delete delete delete delete

Images