CN112809825A - Punching bed for flexible circuit board - Google Patents
Punching bed for flexible circuit board Download PDFInfo
- Publication number
- CN112809825A CN112809825A CN202011510778.9A CN202011510778A CN112809825A CN 112809825 A CN112809825 A CN 112809825A CN 202011510778 A CN202011510778 A CN 202011510778A CN 112809825 A CN112809825 A CN 112809825A
- Authority
- CN
- China
- Prior art keywords
- circuit board
- air
- flexible circuit
- die
- arc
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
- B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
- B26F1/38—Cutting-out; Stamping-out
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
- B26D7/18—Means for removing cut-out material or waste
- B26D7/1845—Means for removing cut-out material or waste by non mechanical means
- B26D7/1854—Means for removing cut-out material or waste by non mechanical means by air under pressure
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
- B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
- B26F1/38—Cutting-out; Stamping-out
- B26F1/44—Cutters therefor; Dies therefor
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/0011—Working of insulating substrates or insulating layers
- H05K3/0044—Mechanical working of the substrate, e.g. drilling or punching
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
- B26D2007/0012—Details, accessories or auxiliary or special operations not otherwise provided for
- B26D2007/0018—Trays, reservoirs for waste, chips or cut products
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
- B26F2210/00—Perforating, punching, cutting-out, stamping-out, severing by means other than cutting of specific products
- B26F2210/08—Perforating, punching, cutting-out, stamping-out, severing by means other than cutting of specific products of ceramic green sheets, printed circuit boards and the like
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
- Details Of Cutting Devices (AREA)
Abstract
The invention discloses a punching bed for a flexible circuit board, which structurally comprises a cylinder, a controller, a protection plate, an upper die, a lower die, a workbench, a machine body, a conveying device and a damping guide rod, wherein the machine body is provided with the workbench, the conveying device is arranged on the workbench and is connected with the lower die in a sliding manner, and the upper die is arranged above the lower die. The lower die is provided with the air outlet, the air dispersing plate, the tape measure and the air inflating disc are additionally arranged, the force applied to the drawer provided with the punched flexible circuit board serves as power, the characteristic of a spring is utilized, and the air inflating and air collecting of the arc-shaped cylinder are realized through the mutual meshing of the flexible rack and the gear, so that the flexible circuit board excess material and the lower die can be quickly separated conveniently through the air flow, and the flexible circuit board excess material is prevented from being attached to the lower die and being difficult to take down due to punching force.
Description
Technical Field
The invention relates to the technical field of circuit board processing, in particular to a flexible circuit board punching machine.
Background
The flexible circuit is a technology developed in the United states in the last 70 th century for developing the space rocket technology, and is a printed circuit which is made of polyester film or polyimide as a base material and has high reliability and excellent flexibility.
The flexible circuit board need die-cut it in process of production, and current flexible circuit board can produce great pressure when die-cutting owing to go up the mould to flexible circuit board, can make the flexible circuit board clout after the die-cut firmly attached at the lower mould, is difficult for taking off the flexible circuit board clout after the die-cut.
Disclosure of Invention
The invention mainly aims to overcome the defects of the prior art and provide a flexible circuit board punching bed.
The invention is realized by adopting the following technical scheme: the utility model provides a die-cut bed of flexible circuit board, its structure is including cylinder, controller, guard plate, last mould, lower mould, workstation, organism, conveyor, shock attenuation guide arm, the organism is equipped with the workstation, install conveyor on the workstation, conveyor and lower mould sliding connection, the top of lower mould is equipped with the mould, the top center and the cylinder of going up the mould are connected, the cylinder is connected in the organism, the organism is equipped with the shock attenuation guide arm in still, the shock attenuation guide arm be equipped with four and with last mould cooperate.
The lower die comprises air outlet holes, a die body, drawers, connecting strips, tape measures, an inflating plate and air diffusing plates, the die body is movably matched with the drawers, the air diffusing plates are arranged above the drawers and fixedly connected with the die body, the die body is also provided with the air outlet holes, the air outlet holes are communicated with the air diffusing plates, the air diffusing plates are connected to the inflating plate, the inflating plate is provided with two connecting strips and is positioned below the drawers, the bottom surface of each drawer is further fixedly provided with the connecting strips, the two ends of each connecting strip are connected with the tape measures, and the tape measures are matched with the inflating plate.
Preferably, the tape comprises a tape disc, a flexible rack and a tape strip, the tape disc is provided with the tape strip connected with the tape disc, the tape strip is provided with the flexible rack attached with the tape strip, and a tooth block of the flexible rack faces away from the tape strip.
Further preferably, the flexible rack is matched with the inflating disc, the tape measure disc is fixedly connected with the die body, and one tail end of the flexible rack is connected with the connecting strip.
Further optimize, the dish of inflating is including gear, a ARC section of thick bamboo, outlet duct, application of force piece, arc pole, center pin, centre wheel, the centre wheel passes through the center swing joint of center pin, bearing and gear, the inner ring wall of gear is fixed with application of force piece, application of force piece is connected with the one end of arc pole, the other end of arc pole runs through in a ARC section of thick bamboo, a ARC section of thick bamboo is fixed on the centre wheel, a seamless intercommunication in the outlet duct in the gas outlet of a ARC section of thick bamboo.
Further preferably, the air outlet pipe is connected with the air dispersing plate, the gear is meshed with the flexible rack, and the central wheel is connected with the die body.
Preferably, the air diffusing plate comprises a hollow pipe connected to two inner ends of the hollow frame, the two hollow pipes are arranged in parallel, the air diffusing holes are formed in the surfaces of the hollow frame and the mold body, which are attached to each other, and the air diffusing holes are communicated with the air outlet holes.
Further preferably, the hollow pipe is communicated with the hollow frame, the hollow pipe is communicated with the air outlet pipe in a seamless mode, and the hollow pipe and the die body are fixedly connected.
Advantageous effects
The flexible circuit board to be punched is placed on the die body, the lower die is input to the position right below the upper die through the conveying device, the upper die is driven by the air cylinder to descend to punch the flexible circuit board, the punched flexible circuit board is output through the lower die through the conveying device, the punched small flexible circuit board falls into the drawer, the drawer is pulled outwards through the connecting strip to generate pulling force on the tape measure, so that the tape measure drives the flexible rack to extend outwards, the flexible rack extends outwards to drive the gear to rotate, the flexible rack and the gear are combined, the movable displacement of the flexible rack can drive the gear to rotate, when the gear rotates to be limited by the arc-shaped cylinder, the gear can limit the flexible rack to prevent the flexible rack from extending outwards excessively, the drawer is prevented from being separated from the die body, the gear rotates clockwise by taking the central shaft as the shaft, and applies force to the arc-shaped rod through the force application block while rotating, make the arc pole contract in to the arc section of thick bamboo and inflate the operation, the gas of beating is derived through the outlet duct and is got into back type frame, the hollow tube, blow to in the clout flexible circuit board from the venthole through the gas pocket that looses, thereby be convenient for clout flexible circuit board and the quick separation of lower mould, and push away the drawer in, drawer application of force in tape measure promptly, the tape measure receives the pulling force to reduce simultaneously, do benefit to the tape measure and contract in to the tape measure dish, make soft rack drive gear anticlockwise rotation, the arc pole of being convenient for stretches out the gas collection that resets outward to the arc section of thick bamboo.
Compared with the prior art, the invention has the beneficial effects that: the lower die is provided with the air outlet, the air dispersing plate, the tape measure and the air inflating disc are additionally arranged, the force applied to the drawer provided with the punched flexible circuit board serves as power, the air inflating and air collecting of the arc-shaped cylinder are realized by utilizing the characteristic of the spiral spring and through the mutual meshing of the flexible rack and the gear, the flexible circuit board excess material and the lower die can be quickly separated conveniently by utilizing the air flow, and the flexible circuit board excess material is prevented from being attached to the lower die and being difficult to take down due to punching force.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
fig. 1 is a schematic structural diagram of a flexible circuit board punching bed according to the present invention.
Fig. 2 is a schematic top view of the lower mold of the present invention.
Fig. 3 is a bottom view of the lower mold of the present invention.
FIG. 4 is a schematic view of the construction of the tape measure of the present invention.
Fig. 5 is a schematic structural view of the inflation disk of the present invention.
FIG. 6 is a schematic structural view of the air diffuser plate of the present invention.
In the drawings, the corresponding relationship between the component names and the reference numbers is as follows: the device comprises an air cylinder-1, a controller-2, a protection plate-3, an upper die-4, a lower die-5, a workbench-6, a machine body-7, a conveying device-8, a damping guide rod-9, an air outlet-51, a die body-52, a drawer-53, a connecting strip-54, a measuring tape-55, an inflating disc-56, an air diffusing plate-57, a measuring tape disc-551, a flexible rack-552, a measuring tape strip-553, a gear-561, an arc cylinder-562, an air outlet pipe-563, a force application block-564, an arc rod-565, a central shaft-566, a central wheel-567, a clip-571, an air diffusing hole-572 and a hollow pipe-573.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1-6, the present invention provides a technical solution of a flexible circuit board punching bed: its structure is including cylinder 1, controller 2, guard plate 3, go up mould 4, lower mould 5, workstation 6, organism 7, conveyor 8, shock attenuation guide arm 9, organism 7 is equipped with workstation 6, install conveyor 8 on the workstation 6, conveyor 8 and lower mould 5 sliding connection, the top of lower mould 5 is equipped with mould 4, it is connected with cylinder 1 to go up the top center of mould 4, cylinder 1 is connected in organism 7, organism 7 is equipped with shock attenuation guide arm 9 still, shock attenuation guide arm 9 is equipped with four and cooperatees with last mould 4.
The lower die 5 comprises air outlet holes 51, a die body 52, drawers 53, connecting strips 54, tape measures 55, an inflating disc 56 and air dispersing plates 57, the die body 52 is movably matched with the drawers 53, the air dispersing plates 57 are arranged above the drawers 53, the air dispersing plates 57 are fixedly connected with the die body 52, the die body 52 is also provided with the air outlet holes 51, the air outlet holes 51 are communicated with the air dispersing plates 57, the air dispersing plates 57 are connected to the inflating disc 56, the inflating disc 56 is provided with two connecting strips 54 which are positioned below the drawers 53, the bottom surface of the drawer 53 is also fixedly provided with the connecting strips 54, the two ends of the connecting strips 54 are connected with the tape measures 55, and the tape measures 55 are matched with the inflating disc 56.
The measuring tape 55 comprises a measuring tape disc 551, a flexible rack 552 and a measuring tape 553, wherein the measuring tape disc 551 is provided with the measuring tape 553 connected with the measuring tape 551, the measuring tape 553 is provided with the flexible rack 552 attached with the measuring tape 553, a tooth block of the flexible rack 552 faces back to the measuring tape 553, the flexible rack 552 is matched with the inflating disc 56, the measuring tape disc 551 is fixedly connected with the die body 52, and one end of the flexible rack 552 is connected with the connecting strip 54.
The tape 553 is arranged such that when the drawer 53 is pulled out by a force, the tape 553 is applied with a force, and the tape 553 is pulled out, and when the drawer 53 is pushed inward by a force, the tape 553 is pushed, and the tape 553 is pulled by a force, which is reduced, thereby facilitating the inward-contraction restoration of the tape 553.
The inflating disk 56 comprises a gear 561, an arc cylinder 562, an air outlet pipe 563, a force application block 564, an arc rod 565, a central shaft 566 and a central wheel 567, the central wheel 567 is movably connected with the center of the gear 561 through a central shaft 566 and a bearing, a force application block 564 is fixed on the inner annular wall of the gear 561, the force application block 564 is connected with one end of an arc-shaped rod 565, the other end of the arc rod 565 penetrates through the arc cylinder 562, the arc cylinder 562 is fixed on the central wheel 567, the air outlet of the arc cylinder 562 is seamlessly communicated with an air outlet pipe 563, the air outlet pipe 563 is connected with the air dispersing plate 57, the gear 561 is engaged with the flexible rack 552, the center wheel 567 is connected to the mold body 52, the center wheel 567 is disposed to move the gear 561, the cylinder 562 is stationary, the gear 561 rotates, and the lever 565 is driven by the force block 564 to extend or retract into the cylinder 562.
The combination of the flexible rack 552 and the gear 561 is arranged such that the flexible rack 552 can move to drive the gear 561 to rotate, and when the gear 561 rotates to be limited by the arc cylinder 562, the gear 561 can limit the flexible rack 552 to prevent the flexible rack 552 from extending excessively, thereby limiting the drawer 53 and preventing the drawer 53 from separating from the mold body 52.
The air diffusion plate 57 comprises a return frame 571, air diffusion holes 572 and hollow tubes 573, the two inner ends of the return frame 571 are connected with the hollow tubes 573, the two hollow tubes 573 are arranged in parallel, the air diffusion holes 572 are formed in the surfaces, attached to the die body 52, of the return frame 571 and the hollow tubes 573, the air diffusion holes 572 are communicated with the air outlet holes 51, the return frame 571 is communicated with the hollow tubes 573, the return frame 571 is in seamless communication with the air outlet pipe 563, and the return frame 571 and the hollow tubes 573 are fixedly connected with the die body 52, so that air can be uniformly blown to the excess circuit board, the excess circuit board is conveniently separated from the lower die, and the excess circuit board is prevented from being adhered to the lower die.
The working principle of the invention is as follows: the flexible circuit board to be punched is placed on the die body 52, the lower die 5 is input to the position right below the upper die 4 through the conveying device 8, the upper die 4 is driven by the air cylinder 1 to descend to punch the flexible circuit board, the punched flexible circuit board is output through the lower die 5 through the conveying device 8, the punched small flexible circuit board falls into the drawer 53, the drawer 53 is pulled outwards, the drawer 53 generates pulling force on the measuring tape 55 through the connecting strip 54, the measuring tape 55 drives the flexible rack 552 to extend outwards, the flexible rack 552 extends outwards to drive the gear 561 to rotate, the gear 561 rotates clockwise by taking the central shaft 566 as a shaft, the gear 561 rotates and applies force to the arc rod 565 through the force application block 564, the arc rod 565 retracts into the arc cylinder 562 to perform inflating operation, the ejected gas is led out through the air outlet pipe 563 to enter the return frame 571 and the hollow pipe 573, and is blown to the residual flexible circuit board from the air outlet hole 51 through the air outlet hole 572, therefore, the excess flexible circuit board and the lower die can be separated quickly, the drawer 53 is pushed inwards, namely the drawer 53 applies force to the tape measure 55, meanwhile, the tensile force of the tape measure 55 is reduced, the tape measure 55 is favorably retracted towards the tape measure disc 551, the flexible rack 552 drives the gear 561 to rotate anticlockwise, and the arc rod 565 can extend outwards to the arc cylinder 562 to reset and collect gas conveniently.
In summary, the technical progress obtained by the invention compared with the prior art is as follows: the lower die is provided with the air outlet, the air dispersing plate, the tape measure and the air inflating disc are additionally arranged, the force applied to the drawer provided with the punched flexible circuit board serves as power, the air inflating and air collecting of the arc-shaped cylinder are realized by utilizing the characteristic of the spiral spring and through the mutual meshing of the flexible rack and the gear, the flexible circuit board excess material and the lower die can be quickly separated conveniently by utilizing the air flow, and the flexible circuit board excess material is prevented from being attached to the lower die and being difficult to take down due to punching force.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.
Claims (7)
1. The utility model provides a die-cut bed of flexible circuit board, its structure is including cylinder (1), controller (2), guard plate (3), go up mould (4), lower mould (5), workstation (6), organism (7), conveyor (8), shock attenuation guide arm (9), organism (7) are equipped with workstation (6), install conveyor (8) on workstation (6), conveyor (8) and lower mould (5) sliding connection, it is connected with cylinder (1) to go up mould (4), cylinder (1) links in organism (7), organism (7) still be equipped with and go up mould (4) matched with shock attenuation guide arm (9), its characterized in that:
the lower die (5) comprises air outlet holes (51), a die body (52), a drawer (53), a connecting strip (54), a tape measure (55), an inflating disc (56) and an air dispersing plate (57), wherein the die body (52) is movably matched with the drawer (53), the air dispersing plate (57) connected with the die body (52) is arranged above the drawer (53), the die body (52) is further provided with air outlet holes (51) communicated with the air dispersing plate (57), the air dispersing plate (57) is connected to the inflating disc (56), the inflating disc (56) is provided with two connecting strips (54) and is located below the drawer (53), the bottom surface of the drawer (53) is further fixedly provided with the connecting strip (54), and the two ends of the connecting strip (54) are connected with the tape measure (55) matched with the inflating disc (56).
2. A flexible circuit board die cutting bed according to claim 1, wherein: the measuring tape (55) comprises a measuring tape disk (551), a flexible rack (552) and a measuring tape strip (553), wherein the measuring tape disk (551) is provided with the measuring tape strip (553), and the measuring tape strip (553) is provided with the flexible rack (552) attached to the measuring tape strip (553).
3. A flexible circuit board die cutting bed according to claim 2, wherein: the flexible rack (552) is matched with the inflating disc (56), the measuring tape disc (551) is connected with the die body (52), and the flexible rack (552) is connected with the connecting strip (54).
4. A flexible circuit board die cutting bed according to claim 1, wherein: the air inflating disc (56) comprises a gear (561), an arc-shaped cylinder (562), an air outlet pipe (563), a force applying block (564), an arc-shaped rod (565), a central shaft (566) and a central wheel (567), wherein the central wheel (567) is connected with the gear (561) through the central shaft (566) and a bearing, the inner annular wall of the gear (561) is fixed with the force applying block (564), the force applying block (564) is connected with the arc-shaped rod (565), the arc-shaped rod (565) penetrates through the arc-shaped cylinder (562), the arc-shaped cylinder (562) is fixed on the central wheel (567), and the arc-shaped cylinder (562) is communicated with the air outlet pipe (563).
5. A flexible circuit board die cutting bed according to claim 4, characterized in that: the air outlet pipe (563) is connected with the air diffuser plate (57), the gear (561) is meshed with the flexible rack (552), and the central wheel (567) is connected with the die body (52).
6. A flexible circuit board die cutting bed according to claim 1, wherein: the air diffusion plate (57) comprises a back-shaped frame (571), air diffusion holes (572) and a hollow tube (573), the back-shaped frame (571) is connected with the hollow tube (573), the air diffusion holes (572) are formed in the surfaces, attached to the die body (52), of the back-shaped frame (571) and the hollow tube (573), and the air diffusion holes (572) are communicated with the air outlet holes (51).
7. A flexible circuit board die cutting bed according to claim 6, characterized in that: the die-return frame (571) is communicated with the hollow pipe (573), the die-return frame (571) is communicated with the air outlet pipe (563), and the die-return frame (571) and the hollow pipe (573) are connected with the die body (52).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011510778.9A CN112809825A (en) | 2020-12-19 | 2020-12-19 | Punching bed for flexible circuit board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011510778.9A CN112809825A (en) | 2020-12-19 | 2020-12-19 | Punching bed for flexible circuit board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112809825A true CN112809825A (en) | 2021-05-18 |
Family
ID=75853421
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011510778.9A Withdrawn CN112809825A (en) | 2020-12-19 | 2020-12-19 | Punching bed for flexible circuit board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112809825A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114159856A (en) * | 2021-10-27 | 2022-03-11 | 湖南正信检测技术股份有限公司 | Filtering device for food detection |
-
2020
- 2020-12-19 CN CN202011510778.9A patent/CN112809825A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114159856A (en) * | 2021-10-27 | 2022-03-11 | 湖南正信检测技术股份有限公司 | Filtering device for food detection |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20210518 |
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| WW01 | Invention patent application withdrawn after publication |