Roller dry-wiping dust removal mechanism

Abstract

The utility model relates to a roller dry-wiping dust removal mechanism which comprises a wiping device, a driving device and a dust removal device, the wiping device comprises a dry-wiping cleaning piece and a fixing assembly, the dry-wiping cleaning piece is in transmission connection with the driving device through the fixing assembly, and the dry-wiping cleaning piece moves on the outer side of the roller surface of a roller through the driving device. And the dust removal device cooperates with the self-rotating roller to perform dry wiping operation on the roller surface, and the dust removal device is arranged on the outer side of the dry wiping cleaning piece so as to suck away dust falling off from the roller surface of the roller by the dry wiping cleaning piece. The roller surface dry-wiping dust removal device is simple in structure and convenient to operate, the purpose of dry-wiping dust removal of the roller surface is achieved, the dry-wiping cleaning piece moves on the outer side of the roller surface to dry-wipe the roller surface, dust bonded on the roller surface in the rolling process is removed, the dust removal device can effectively absorb falling dust particles, and the dust removal effect is good. And the dry-wiping cleaning piece is always in a good working state.

Description

Technical Field

[0001] The utility model relates to the technical field of rolling, and particularly relates to a dry wiping and dust removing mechanism for a rolling mill roll. Background Art

[0002] Roll separation is an important process in the production of pole pieces. The roll separation operation is to roll the incoming material after coating and then slit and wind up the rolled pole pieces. Due to material reasons, the negative electrode is prone to powder dropping and sticking during the rolling process, causing dust to adhere to the roll surface of the rolling mill and affecting the quality of rolling.

[0003] In the existing process, the roll surface of the rolling mill is wiped and cleaned by two methods: wet wiping and dry wiping. The structure and debugging of wet wiping are relatively complex, resulting in too high manufacturing costs. Traditional dry wiping drives a scouring pad to wipe the roll surface of the rolling mill through a rodless slide table. During operation, a large amount of dust will be generated when the dry wiping structure wipes the roll surface. After continuous use for a period of time, the dust will accumulate inside the rodless slide table, damaging the internal structure of the rodless slide table, affecting the service life of the rodless slide table, and requiring frequent maintenance and replacement of the dry wiping structure, thus affecting production. Summary of the Utility Model

[0004] In order to solve the deficiencies of the existing technology, the utility model provides a dry wiping and dust removing mechanism for a rolling mill roll.

[0005] The utility model provides a dry wiping and dust removing mechanism for a rolling mill roll, which comprises a wiping device, a driving device and a dust removing device. The wiping device comprises a dry wiping cleaning part and a fixing component. The dry wiping cleaning part is in transmission connection with the driving device through the fixing component. The dry wiping cleaning part moves outside the roll surface of the rolling mill through the driving device and cooperates with the self-rotating rolling mill to perform dry wiping operation on the roll surface of the rolling mill. The dust removing device is arranged outside the dry wiping cleaning part to suck away the dust wiped off from the roll surface of the rolling mill by the dry wiping cleaning part.

[0006] In some embodiments, the driving device comprises a first driving component and a second driving component. The first driving component is installed on one side of the wiping device through a bottom plate. A top plate is arranged at the driving end of the first driving component. The second driving component is installed on the top plate and is in transmission connection with the wiping device. The first driving component drives the top plate and the wiping device to move along a first guiding component, and the second driving component drives the wiping device to move along a second guiding component.

[0007] In some embodiments, the first driving component comprises a first cylinder. The first cylinder is fixed on the bottom plate, and the driving end of the first cylinder is connected with the top plate. The second driving component comprises a second cylinder. The second cylinder is fixed on the top plate, and the driving end of the second cylinder is connected with the fixing component of the wiping device. The driving directions of the first cylinder and the second cylinder are perpendicular to each other.

[0008] In some embodiments, the first guide assembly includes a linear slide rail, a slider and a support, the linear slide rail is fixed on the bottom plate along a first direction, the slider is connected to the top plate through the support, and the slider is slidably connected to the linear slide rail.

[0009] In some embodiments, the second guide assembly includes a guide rod, a fixed seat, a linear bearing, a dust cover, a dust ring and a cover plate, the guide rod is fixed on the top plate along the second direction, the fixed seat is connected to the fixed assembly of the wiping device, the fixed seat is slidably connected to the guide rod through a linear bearing, the dust cover is arranged between two fixed seats sleeved on the guide rod, the dust ring is arranged on one side of the linear bearing through the cover plate and is arranged away from the dust cover, and the cover plate is fixedly connected to the fixed seat.

[0010] In some embodiments, an adjustment limit structure is provided between the first guide assembly and the bottom plate, and the adjustment limit structure is used to adjust the amount of compression between the dry wiping cleaning element of the wiping device and the roller surface.

[0011] In some embodiments, the adjustment limit structure includes a limit block, a support block and a ruler, the support block is installed on the support of the first guide assembly, the limit block is arranged on the base plate and is located on the moving path of the support block; the ruler is installed on the support block and is arranged in the direction of the limit block.

[0012] In some embodiments, the dry-wiping cleaning element includes a sponge pad and a scouring pad, wherein the scouring pad is fixed to a side of the sponge pad facing the roller surface, and the other side of the sponge pad is fixedly connected to a fixing assembly.

[0013] In some embodiments, the fixing assembly includes a C-shaped fixing clamp, a C-shaped groove of the C-shaped fixing clamp is clamped with the sponge pad, and the C-shaped fixing clamp is transmission-connected to the driving device on a side away from the sponge pad.

[0014] In some embodiments, the dust removal device includes a central dust removal box, a side dust removal box and a protective cover. The central dust removal box and the side dust removal boxes are respectively arranged on the outside of the dry cleaning element to absorb dust that is wiped off the roller surface by the dry cleaning element. The protective cover is arranged on the outside of the wiping device with the dry cleaning element as the center.

[0015] Compared with the prior art, the utility model has the following beneficial effects: simple structure, easy operation, and the purpose of dry wiping and dust removal on the roller surface is achieved. The dry wiping cleaning piece moves on the outside of the roller surface to perform dry wiping on the roller surface, thereby removing dust adhered to the roller surface during the rolling process. The dust removal device can effectively absorb the fallen dust particles, thereby ensuring that the dry wiping cleaning piece is always in good working condition. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a top - view structural schematic diagram of the roll dry - wiping dust - removing mechanism of the embodiment of the present application.

[0017] Figure 2 It is one of the three - dimensional structural schematic diagrams of the roll dry - wiping dust - removing mechanism of the embodiment of the present application.

[0018] Figure 3 It is the second three - dimensional structural schematic diagram of the roll dry - wiping dust - removing mechanism of the embodiment of the present application.

[0019] Figure 4 It is an internal cross - sectional structural schematic diagram of the roll dry - wiping dust - removing mechanism of the embodiment of the present application.

[0020] Figure 5 It is a three - dimensional structural schematic diagram of the roll dry - wiping dust - removing mechanism of the embodiment of the present application assembled with a protective cover.

[0021] Reference numerals: 100, wiping device;

[0022] 1, dry - wiping cleaning member; 11, sponge pad; 12, scouring pad;

[0023] 2, fixing component; 21, C - shaped fixing clamp; 22, C - shaped groove; 23, first connecting block; 24, second connecting block;

[0024] 200, driving device;

[0025] 3, first driving component; 31, first cylinder;

[0026] 4, second driving component; 41, second cylinder;

[0027] 5, first guiding component; 51, linear slide rail; 52, slider; 53, support;

[0028] 6, second guiding component; 61, guiding rod; 62, fixed seat; 63, linear bearing; 64, dust - proof cover; 65, dust - proof ring; 66, cover plate; 67, top block;

[0029] 7, adjusting and limiting structure; 71, limiting block; 72, support block; 73, scale; 74, adjusting screw;

[0030] 300, dust - removing device; 301, central dust - removing box; 302, side dust - removing box; 303, protective cover;

[0031] 400, bottom plate;

[0032] 500, top plate. Detailed implementation manners

[0033] The detailed implementation manners of the present utility model are introduced with reference to the accompanying drawings.

[0034] refer to Figure 1 The figure is a top view of the structure of the roller dry wiping dust removal mechanism, the upper part is the wiping device 100, and the lower part is the driving device 200. The driving device 200 drives the wiping device 100 to move in two vertical directions, thereby driving the wiping device 100 to dry-wipe and clean the roller surface. The dust wiped off the roller surface is sucked away by the dust removal device 300 in the middle, and the dust removal device 300 is connected to the external dust removal pipeline.

[0035] refer to Figures 1 to 5 A roller dry wiping dust removal mechanism includes a wiping device 100, a driving device 200 and a dust removal device 300. The wiping device 100 includes a dry wiping cleaning member 1 and a fixing component 2. The dry wiping cleaning member 1 is transmission-connected to the driving device 200 via the fixing component 2. The dry wiping cleaning member 1 moves outside the roller surface via the driving device 200 and cooperates with the rotating roller to perform a dry wiping operation on the roller surface. The dust removal device 300 is arranged outside the dry wiping cleaning member 1 to absorb dust that is wiped off the roller surface by the dry wiping cleaning member 1.

[0036] The roller dry wiping dust removal mechanism of the embodiment of the present application has a simple structure and is easy to operate, and achieves the purpose of dry wiping and dust removal on the roller surface. The dry wiping cleaning member 1 moves on the outside of the roller surface to dry-wipe the roller surface to remove dust adhered to the roller surface during the rolling process. The dust removal device 300 can effectively absorb the fallen dust particles, ensuring that the dry wiping cleaning member 1 is always in good working condition.

[0037] In order to drive the dry cleaning element 1 to wipe the roller surface, in this embodiment, Figures 1 to 4 The driving device 200 includes a first driving component 3 and a second driving component 4. The first driving component 3 is installed on one side of the wiping device 100 through a bottom plate 400. A top plate 500 is provided at the driving end of the first driving component 3. The second driving component 4 is installed on the top plate 500 and is transmission-connected to the wiping device 100. The first driving component 3 drives the top plate 500 and the wiping device 100 to move along the first guide component 5, and the second driving component 4 drives the wiping device 100 to move along the second guide component 6.

[0038] It can be understood that, with such an arrangement, when the roller surface needs to be cleaned, the first drive component 3 drives the dry cleaning element 1 to be pressed toward the roller surface along the first guide component 5, so that there is a certain pressure between the dry cleaning element 1 and the roller surface, and the second drive component 4 drives the dry cleaning element 1 to move back and forth along the second guide component 6, so that the dry cleaning element 1 moves on the roller surface along the axial direction of the roller, and in conjunction with the self-rotation of the roller, the dry cleaning element 1 uses friction to wipe and clean the roller surface.

[0039] In order to quickly and stably drive the dry cleaning element 1 to move, in this embodiment, referenceFigures 1 to 4 , the first driving component 3 includes a first cylinder 31. The first cylinder 31 is fixed on the bottom plate 400, and the driving end of the first cylinder 31 is connected to the top plate 500; the second driving component 4 includes a second cylinder 41. The second cylinder 41 is fixed on the top plate 500, and the driving end of the second cylinder 41 is connected to the fixing component 2 of the wiping device 100. The driving directions of the first cylinder 31 and the second cylinder 41 are perpendicular to each other.

[0040] It should be further noted that a first connecting block 23 and a second connecting block 24 are arranged between the driving end of the second cylinder 41 and the C-shaped fixing clamp 21 of the fixing component 2. The first connecting block 23 is fixed to the driving end of the second cylinder 41, and the second connecting block 24 is vertically fixed to the back of the C-shaped fixing clamp 21. The first connecting block 23 and the second connecting block 24 are fixed by a waist-shaped hole and a screw. An adjustable component is arranged between the waist-shaped hole and the screw, which is similar to a floating joint, to prevent the piston rod of the second cylinder 41 from being eccentric during operation and affecting the piston ring inside the second cylinder 41, and reducing the service life of the second cylinder 41.

[0041] It can be understood that with such a setting, the stroke of the first cylinder 31 is smaller, and the two first cylinders 31 can quickly push the top plate 500 to move. The stroke of the second cylinder 41 is longer, driving the dry wiping cleaning part 1 to move a long distance along the axial direction of the rolling mill roll. The driving directions of the first cylinder 31 and the second cylinder 41 are perpendicular to each other, so as to drive the dry wiping cleaning part 1 to move to any position on the two-dimensional plane, and cooperate with the self-rotating rolling mill roll, so that the dry wiping cleaning part 1 can wipe any position on the roll surface of the rolling mill roll, ensuring the cleaning quality.

[0042] To ensure the stable movement of the top plate 500, in this embodiment, refer to Figure 2 , the first guiding component 5 includes a linear slide rail 51, a slider 52 and a support 53. The linear slide rail 51 is fixed on the bottom plate 400 along the first direction. The slider 52 is connected to the top plate 500 through the support 53, and the slider 52 is slidably connected to the linear slide rail 51.

[0043] It can be understood that with such a setting, two groups of first guiding components 5 are arranged between the top plate 500 and the bottom plate 400. The top plate 500 is stably supported by the two groups of first guiding components 5, and the movement of the top plate 500 and the wiping device 100 is guided. The sliding connection between the linear slide rail 51 and the slider 52 can ensure the smooth movement of the top plate 500.

[0044] To ensure the stable wiping of the roll surface by the wiping device 100, in this embodiment, refer to Figures 1 to 4, the second guiding component 6 includes a guiding rod 61, a fixing seat 62, a linear bearing 63, a dust cover 64, a dust ring 65 and a cover plate 66. The guiding rod 61 is fixed on the top plate 500 along the second direction. The fixing seat 62 is connected to the fixing component 2 of the wiping device 100. Specifically, the fixing seat 62 is fixedly connected to the back of the C-shaped fixing clamp 21. The fixing seat 62 is slidably connected to the guiding rod 61 through the linear bearing 63. The dust cover 64 is arranged between two fixing seats 62 sleeved on the guiding rod 61. The dust ring 65 is arranged on one side of the linear bearing 63 through the cover plate 66 and is arranged away from the dust cover 64. The cover plate 66 is fixedly connected to the fixing seat 62.

[0045] It should be further noted that the dust ring 65 is used to block and remove the dust falling on the guiding rod 61 during the wiping process, protect the linear bearing 63, and prevent the structure between the guiding rod 61 and the linear bearing 63 from being damaged. Among them, the linear bearing 63 is a self-lubricating bearing. The linear bearing 63 has a self-lubricating function, lubricates the guiding rod 61, reduces dust adhesion and increases the surface friction of the guiding rod 61. Top blocks 67 are arranged at both ends of the guiding rod 61. The top blocks 67 can conveniently adjust the horizontal distance between the guiding rods 61 at both ends to ensure that the guiding rod 61 and the linear bearing 63 will not be jammed during operation and ensure smooth operation.

[0046] It can be understood that with such a setting, the guiding rod 61 cooperates with the linear bearing 63 and the dust ring 65. During the wiping process, the dust on the guiding rod 61 is pushed away by the dust rings 65 on both sides, and the fine dust plays a lubricating role through the linear bearing 63, reducing the friction between the two and reducing the replacement frequency.

[0047] In order to adjust the wiping force of the dry wiping cleaning member 1, in this embodiment, refer to Figure 2 , an adjusting and limiting structure 7 is arranged between the first guiding component 5 and the bottom plate 400. The adjusting and limiting structure 7 is used to adjust the pressing amount between the dry wiping cleaning member 1 of the wiping device 100 and the roll surface.

[0048] It can be understood that with such a setting, the dry wiping cleaning member 1 has a certain elasticity. The adjusting and limiting structure 7 adjusts the distance between the dry wiping cleaning member 1 and the roll surface during wiping to adjust the pressure between the dry wiping cleaning member 1 and the roll surface, thereby affecting the friction between the dry wiping cleaning member 1 and the roll surface, and thus adjusting the wiping force of the dry wiping cleaning member 1.

[0049] In order to accurately adjust the pressing amount between the dry wiping cleaning member 1 and the roll surface, in this embodiment, refer to Figure 2The adjustment limit structure 7 includes a limit block 71, a support block 72 and a ruler 73. The support block 72 is installed on the support 53 of the first guide assembly 5. The limit block 71 is set on the bottom plate 400 and is located on the moving path of the support block 72; the ruler 73 is installed on the support block 72 and is set in the direction of the limit block 71.

[0050] It can be understood that, with such an arrangement, during the wiping process, the first cylinder 31 on the bottom plate 400 pushes the top plate 500, and the dry-wiping cleaning member 1 on the top plate 500 is pressed onto the roller surface, wherein the support block 72, the limit block 71 and the scale 73 in the adjustment limit structure 7 are arranged, and an adjusting screw 74 facing the limit block 71 is arranged on the support block 72, and the end of the adjusting screw 74 cooperates with the limit block 71. When the limit block 71 contacts the end of the adjusting screw 74, the top plate 500 is moved into place, and the amount of compression between the dry-wiping cleaning member 1 and the roller surface is adjusted by turning the adjusting screw 74, thereby enhancing the wiping effect.

[0051] In order to ensure that the dry cleaning element 1 has sufficient wiping ability, in this embodiment, reference Figures 1 to 4 The dry cleaning member 1 comprises a sponge pad 11 and a scouring pad 12 . The scouring pad 12 is fixed to one side of the sponge pad 11 facing the roller surface, and the other side of the sponge pad 11 is fixedly connected to the fixing assembly 2 .

[0052] It is understandable that, with such a configuration, the scouring pad 12 has better grinding performance and can wipe off the powder adhering to the roller surface. The wiped-off powder will be swept off by the sponge pad 11, thereby ensuring that the dry cleaning element 1 has sufficient wiping ability to wipe the roller surface clean.

[0053] In order to fix the dry cleaning member 1, in this embodiment, refer to Figures 1 to 4 The fixing assembly 2 includes a C-shaped fixing fixture 21 , a C-shaped groove 22 of the C-shaped fixing fixture 21 is engaged with the sponge pad 11 , and the C-shaped fixing fixture 21 is transmission-connected to the driving device 200 at a side away from the sponge pad 11 .

[0054] It is understandable that with such a configuration, the dry-wiping cleaning piece 1 has a certain elasticity and will deform along with the rotation of the roller during the wiping process. The C-shaped fixing clamp 21 clamps the sponge pad 11 via the C-shaped groove 22 to prevent the dry-wiping cleaning piece 1 from falling off the C-shaped fixing clamp 21 by itself, thereby ensuring a stable connection between the dry-wiping cleaning piece 1 and the fixing assembly 2.

[0055] In order to clean and wipe the fallen dust, in this embodiment, refer to Figure 1 and Figure 5, the dust removal device 300 includes a central dust removal box 301, side dust removal boxes 302 and a shield 303. The central dust removal box 301 and the side dust removal boxes 302 are respectively arranged outside the dry wiping cleaning member 1 to suck away the dust wiped off from the roll surface by the dry wiping cleaning member 1. The shield 303 is arranged around the outside of the wiping device 100 with the dry wiping cleaning member 1 as the center.

[0056] It should be further noted that the central dust removal box 301 is fixed to the back of the C-shaped fixing fixture 21. The suction port of the central dust removal box 301 can be selected to face upward or downward according to the rotation direction of the roll. The suction ports arranged upward and downward have different dust suction effects.

[0057] It can be understood that with such an arrangement, when the dry wiping cleaning member 1 wipes the roll surface, a lot of dust will be generated. The shield 303 surrounded by multiple acrylic plates covers the positions except the dry wiping cleaning member 1, so that the second driving assembly 4 and the second guiding assembly 6 are not overly exposed to the dust. The generated dust is sucked into the dust removal pipeline through the two side dust removal boxes 302 and the central dust removal box 301. The two side dust removal boxes 302 and the central dust removal box 301 suck dust in different areas, which can reduce dust accumulation and avoid clogging of the dust removal pipeline.

[0058] The structure of the embodiment of the present application is simple and easy to operate. The second cylinder 41 with a rod is used as the wiping power source, avoiding the problem that in the operation of the traditional rodless slider, a large amount of dust generated on the wiped roll surface will damage the inside of the rodless slider, resulting in frequent replacement. Through the cooperation of the second cylinder 41 and the second guiding assembly 6, the service life of the guiding structure and the cylinder can be effectively extended, the replacement times can be reduced, and thus the cost can be reduced; by adjusting the limiting structure 7, the pressing amount between the dry wiping cleaning member 1 and the roll surface is adjusted, reducing the damage of the scouring pad 12 to the roll surface and enhancing the cleaning ability of the roll surface. Through the C-shaped fixing fixture 21, the scouring pad 12 and the sponge pad 11 can be conveniently replaced, reducing the replacement time.

[0059] The roll dry wiping structure of the embodiment of the present application can be used for wiping and cleaning the roll surface in the roll pressing operation of the negative electrode sheet of a lithium battery. Obviously, the roll dry wiping structure of the embodiment of the present application is not limited to the application in the roll pressing operation of lithium battery electrode sheets, and is also applicable to equipment with similar roll wiping requirements.

[0060] The above does not impose any limitation on the technical scope of the present invention. Any modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A roller dry wiping dust removal mechanism, characterized in that: The utility model comprises a wiping device, a driving device and a dust removing device. The wiping device comprises a dry wiping cleaning piece and a fixing assembly. The dry wiping cleaning piece is connected to the driving device through the fixing assembly. The dry wiping cleaning piece moves outside the roller surface through the driving device and cooperates with the rotating roller to perform dry wiping operation on the roller surface. The dust removing device is arranged outside the dry wiping cleaning piece to absorb dust dropped from the roller surface by the dry wiping cleaning piece.

2. The roller dry wiping dust removal mechanism according to claim 1, characterized in that: The driving device includes a first driving component and a second driving component. The first driving component is installed on one side of the wiping device through a base plate. A top plate is provided at the driving end of the first driving component. The second driving component is installed on the top plate and is transmission-connected to the wiping device. The first driving component drives the top plate and the wiping device to move along the first guide component, and the second driving component drives the wiping device to move along the second guide component.

3. The roller dry wiping dust removal mechanism according to claim 2, characterized in that: The first driving assembly includes a first cylinder, which is fixed on the bottom plate, and the driving end of the first cylinder is connected to the top plate; the second driving assembly includes a second cylinder, which is fixed on the top plate, and the driving end of the second cylinder is connected to the fixed assembly of the wiping device, and the driving directions of the first cylinder and the second cylinder are perpendicular to each other.

4. The roller dry wiping dust removal mechanism according to claim 2, characterized in that: The first guide assembly includes a linear slide rail, a slider and a support. The linear slide rail is fixed on the bottom plate along a first direction. The slider is connected to the top plate through the support. The slider is slidably connected to the linear slide rail.

5. The roller dry wiping dust removal mechanism according to claim 2, characterized in that: The second guide assembly includes a guide rod, a fixed seat, a linear bearing, a dust cover, a dust cover ring and a cover plate. The guide rod is fixed on the top plate along the second direction. The fixed seat is connected to the fixed assembly of the wiping device. The fixed seat is slidably connected to the guide rod through a linear bearing. The dust cover is arranged between two fixed seats sleeved on the guide rod. The dust ring is arranged on one side of the linear bearing through the cover plate and is arranged away from the dust cover. The cover plate is fixedly connected to the fixed seat.

6. The roller dry wiping dust removal mechanism according to claim 2, characterized in that: An adjustment and limiting structure is provided between the first guide assembly and the bottom plate, and the adjustment and limiting structure is used to adjust the amount of compression between the dry wiping cleaning element of the wiping device and the roller surface.

7. The roller dry wiping dust removal mechanism according to claim 6, characterized in that: The adjustment limit structure includes a limit block, a support block and a ruler. The support block is installed on the support of the first guide assembly. The limit block is set on the bottom plate and located on the moving path of the support block. The ruler is installed on the support block and is set towards the limit block.

8. The roller dry wiping dust removal mechanism according to claim 1, characterized in that: The dry-wiping cleaning piece comprises a sponge pad and a scouring pad. The scouring pad is fixed to one side of the sponge pad facing the roller surface, and the other side of the sponge pad is fixedly connected to a fixing assembly.

9. The roller dry wiping dust removal mechanism according to claim 8, characterized in that: The fixing assembly comprises a C-shaped fixing fixture, a C-shaped groove of the C-shaped fixing fixture is clamped with the sponge pad, and the C-shaped fixing fixture is transmission-connected with the driving device at a side away from the sponge pad.

10. The roller dry wiping dust removal mechanism according to claim 1, characterized in that: The dust removal device includes a central dust removal box, a side dust removal box and a protective cover. The central dust removal box and the side dust removal boxes are respectively arranged on the outside of the dry cleaning piece to absorb dust that is wiped off the roller surface by the dry cleaning piece. The protective cover is arranged on the outside of the wiping device with the dry cleaning piece as the center.

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