Release film tearing device

Abstract

The utility model discloses a release film tearing device which comprises a batch film tearing mechanism, a workbench and an independent film tearing mechanism, the independent film tearing mechanism is arranged at the bottom of a first lifting mechanism, and the independent film tearing mechanism comprises a second adhesive tape unwinding roller and a second adhesive tape winding roller which are arranged in parallel. A third positioning roller and a fourth positioning roller are arranged between the second adhesive tape unwinding roller and the second adhesive tape winding roller, the adhesive tape on the periphery of the second adhesive tape unwinding roller is sequentially wound among the third positioning roller, the fourth positioning roller and the second adhesive tape winding roller, and a second positioning pressure head is arranged between the third positioning roller and the fourth positioning roller; and the second positioning pressure head is arranged at the top of the adhesive tape between the third positioning roller and the fourth positioning roller and is driven by a second lifting mechanism to lift. According to the scheme, on the basis of providing a batch film tearing mechanism, an independent film tearing mechanism is further provided, release films which are not torn off are continuously subjected to targeted film tearing treatment, and the product processing qualification rate and the processing efficiency are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a release film tear-off equipment field especially relates to a release film tear-off device. BACKGROUND

[0002] In order to isolate and protect the components in the precision electronic products (such as microphone, earphone, flexible circuit board and other products), the release film is usually attached to the components, and the release film is removed when the components are processed. The existing batch film tearing equipment, such as the invention patent with the authorization announcement number CN116061541B, provides a release film batch film tearing mechanism and film tearing method, wherein the release film batch film tearing mechanism can effectively remove the release film without damaging the workpiece or leaving glue, ensuring the success rate and high film tearing efficiency. However, in actual application, in order to avoid damage to the components during the film tearing process, the viscosity of the adhesive tape used to remove the release film should not be too high, so that during batch film tearing, occasionally some release films are not removed. The above batch film tearing device can only remove a large amount of release film at one time, and when the film tearing is completed, if there is still release film that has not been removed, it cannot be torn again (tearing again will cause the torn part to be in contact with the adhesive tape or be damaged). Therefore, under the premise of realizing the large amount of release film tearing, the products after batch film tearing need to be inspected, and the release film that has not been removed needs to be torn for targeted processing, so as to improve the product processing qualification rate and processing efficiency. UTILITY MODEL CONTENT

[0003] Therefore, in order to solve the above problems, the utility model provides a release film tear-off device.

[0004] The utility model is realized through the following technical schemes:

[0005] A kind of release film tearing device, including batch tear film mechanism and the worktable for supporting product, which is translatably arranged at the bottom of the batch tear film mechanism, the top of the product is placed with shutter, the shutter is provided with the avoidance hole for exposing product to be torn release film, the batch tear film mechanism at least includes first adhesive tape unwinding roller and first adhesive tape winding roller connected by adhesive tape winding, and stripping mechanism movably arranged between the first adhesive tape winding roller and first adhesive tape unwinding roller, the stripping mechanism removes adhesive tape on the surface of the shutter while passing above the shutter, the moving path of the worktable is provided with independent tear film mechanism, the independent tear film mechanism is arranged at the bottom of first lifting mechanism, and the independent tear film mechanism includes second adhesive tape unwinding roller and second adhesive tape winding roller arranged in parallel, third positioning roller and fourth positioning roller are also arranged equilong and symmetrically between the second adhesive tape unwinding roller and second adhesive tape winding roller, the adhesive tape on the outer periphery of the second adhesive tape unwinding roller is sequentially wound between third positioning roller, fourth positioning roller and second adhesive tape winding roller, second positioning pressure head is arranged between third positioning roller and fourth positioning roller, the second positioning pressure head is arranged at the top of the adhesive tape between third positioning roller and fourth positioning roller, and the second positioning pressure head is connected to second lifting mechanism and is driven to lift by the second lifting mechanism.

[0006] Preferably, the independent tear film mechanism and batch tear film mechanism are further provided with a scanning mechanism for detecting products, and the scanning mechanism at least includes a camera for detecting the tearing condition of the products.

[0007] Preferably, the worktable includes a base, two conveying lines arranged in parallel on both sides of the base, and a lifting platform arranged between the two conveying lines, the two conveying lines are provided with carrier plates for conveying products, the bottom of the base is slidably connected with a first linear module, the first linear module is arranged on a sliding platform, the sliding platform is slidably connected with a second linear module, and the conveying directions of the first linear module and the second linear module are perpendicular to each other.

[0008] Preferably, the two ends of the two conveying belts are respectively provided with a gear position mechanism for limiting the conveying position of the carrier plates on the conveying lines, the gear position mechanism includes a gear position cylinder and / or a first gear position block, the first gear position block is driven to rotate by a first rotary motor, and the rotation axis of the first gear position block is parallel to the conveying direction of the conveying lines.

[0009] Preferably, the two conveying lines include side plates erected on both sides of the base, and conveying belts arranged inside the side plates, and the two ends of each side plate are respectively provided with a second gear position block for limiting the height of the carrier plates, the second gear position block is driven to rotate by a second rotary motor, and the rotation axis of the second gear position block is perpendicular to the base.

[0010] Preferably, the bottom of the first adhesive tape unwinding roller is provided with a first positioning roller, and the bottom of the first adhesive tape winding roller is provided with a second positioning roller, and the first positioning roller and the second positioning roller are at the same height.

[0011] Preferably, the peeling mechanism comprises a support which is in sliding connection with a translation mechanism, the support is parallel to the conveying direction of the conveying line along the sliding direction of the translation mechanism, the support is provided with a peeling roller, a first tensioning roller and a second tensioning roller, the first tensioning roller and the second tensioning roller are symmetrically arranged at the bottom of the peeling roller, and the two ends of the peeling roller, the first tensioning roller and the second tensioning roller are fixed on the support through shaft sleeves, and the bottom of the first tensioning roller and the second tensioning roller is higher than the bottom of the first positioning roller and the second positioning roller.

[0012] Preferably, the outer circumferential surface of the peeling roller and the upper surface of the shield are both provided with an anti-sticking layer.

[0013] Preferably, the first adhesive tape unwinding roller and the first adhesive tape winding roller are further provided with a pressing mechanism, the pressing mechanism comprises a pressing plate which is driven to lift by a third lifting mechanism, and the bottom of the pressing plate is arranged with a first positioning pressing head corresponding to the avoiding hole, and the first positioning pressing head is a spring needle.

[0014] Preferably, the first lifting mechanism, the second lifting mechanism and the third lifting mechanism are all provided with a position sensor.

[0015] The beneficial effects of the technical scheme of the utility model mainly reflect in:

[0016] 1. The release film peeling device provides a separate film peeling mechanism for secondary peeling of the release film on the basis of the batch film peeling mechanism, thereby continuously peeling the release film of the product, improving the product processing qualification rate and processing efficiency, in the separate film peeling mechanism, the height and position of the adhesive tape are positioned by the third positioning roller and the fourth positioning roller, and the second positioning pressing head which is arranged between the third positioning roller and the fourth positioning roller is precisely pressed on the adhesive tape on the top of the single release film, thereby realizing the peeling of the release film of the single component.

[0017] 2. The scanning mechanism is arranged between the batch film peeling mechanism and the separate film peeling mechanism, the scanning mechanism detects the product after batch film peeling through the camera, and accurately positions the position of the product which still has the release film, thereby helping the subsequent operation of the separate film peeling mechanism.

[0018] 3. The carrier plate for conveying products is accurately defined in the conveying position on the conveying line by the gear cylinder and / or the first gear block, and the height position of the carrier plate is accurately defined by the four second gear blocks arranged on the side plate, so that the accuracy of product positioning is realized, the standardization of product processing is realized, and full-automatic processing is realized. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a perspective view of the release film tearing device;

[0020] Figure 2 is a right view of the release film tearing device;

[0021] Figure 3 is a front view of the release film tearing device;

[0022] Figure 4 is Figure 3 is an enlarged view of part A in FIG. 1;

[0023] Figure 5 is a perspective view of the release film tearing device (the rack is omitted at this time);

[0024] Figure 6 is a schematic view of the working state of the carrier plate and the workbench in the release film tearing device;

[0025] Figure 7 is a perspective view of the workbench in the release film tearing device;

[0026] Figure 8 is a perspective view of the independent film tearing mechanism in the release film tearing device;

[0027] Figure 9 is a perspective view of the independent film tearing mechanism in the release film tearing device (the positioning frame is omitted at this time);

[0028] Figure 10 is a right view of the independent film tearing mechanism in the release film tearing device. DETAILED DESCRIPTION

[0029] In order to make the purpose, advantages and characteristics of the present application more clearly and in detail, the following non-limiting description of the preferred embodiment will be used to illustrate and explain the present application. The embodiment is only a typical example of the application of the technical scheme of the present application, and any technical scheme formed by equivalent replacement or equivalent transformation falls within the scope of the present application.

[0030] Meanwhile, it is declared that in the description of the scheme, it needs to be explained that the terms "center", "upper", "lower", "left", "right", "front", "rear", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of description and simplification of the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0031] In addition, the terms "first", "second" in the present scheme are only for the purpose of description, and cannot be understood as indicating or implying the ranking of importance, or implicitly indicating the number of technical features shown. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the utility model, the meaning of "multiple" is two or more than two, unless otherwise explicitly and specifically limited.

[0032] The utility model discloses a release film tearing device, as shown in Figures 1-5 The utility model discloses a release film tearing device, as shown in The utility model discloses a release film tearing device, as shown in

[0033] The utility model discloses a release film tearing device, as shown in Figure 1 、 Figure 3 The utility model discloses a release film tearing device, as shown in

[0034] The utility model discloses a release film tearing device, as shown in Figure 3 、 Figure 4As shown, in an embodiment, the peeling mechanism 103 comprises a bracket 1034 in sliding connection with a translation mechanism, the sliding direction of the bracket 1034 is parallel to the conveying direction of the conveying line, the bracket 1034 is provided with a peeling roller 1031, a first tensioning roller 1032 and a second tensioning roller 1033, the first tensioning roller 1032 and the second tensioning roller 1033 are symmetrically arranged at the bottom of the peeling roller 1031, both ends of the peeling roller 1031, the first tensioning roller 1032 and the second tensioning roller 1033 are fixed on the bracket 1034 through shaft sleeves, the bottom height of the first tensioning roller 1032 and the second tensioning roller 1033 is higher than the bottom height of the first positioning roller 105 and the second positioning roller 106, the outer periphery of the peeling roller 1031 and the upper surface of the shutter 3 are both provided with an anti-sticking layer, so as to avoid the adhesive tape from adhering to the peeling roller 1031 and the shutter 3, specifically, the adhesive tape is threaded out from the interval between the first tensioning roller 1032 and the peeling roller 1031 and threaded out from between the peeling roller 1031 and the second tensioning roller 1033 after winding around the outer periphery of the peeling roller 1031.

[0035] As shown in the drawings, Figure 3 , Figure 4 As shown, in an embodiment, a pressing mechanism is further arranged between the first adhesive tape unwinding roller 101 and the first adhesive tape winding roller 102, the pressing mechanism comprises a pressing plate 104 driven to lift and lower by a third lifting mechanism 17, the bottom of the pressing plate 104 is arranged with first positioning pressing heads 1041 corresponding to the avoidance holes one by one, the first positioning pressing heads 1041 are spring needles, when the adhesive tape between the first adhesive tape unwinding roller 101 and the first adhesive tape winding roller 102 is pasted on the surface of the shutter 3, the first positioning pressing heads 1041 are driven to lower by the shutter, until the first positioning pressing heads 1041 extend into the avoidance holes one by one, and the adhesive tape above the avoidance holes and the release film in the avoidance holes are attached by pressing the adhesive tape.

[0036] In an embodiment, the batch film tearing mechanism 1 can refer to the release film batch film tearing mechanism 1 disclosed in the invention patent with the authorized announcement number CN116061541B, which will not be repeated here.

[0037] In a preferred embodiment, in order to facilitate the replacement of the film, the first adhesive tape winding roller 102 and the second adhesive tape unwinding roller 501 both adopt air inflation rollers, the specific structure of the air inflation roller can refer to the existing air inflation roller structure, which will not be repeated here.

[0038] As shown in the drawings, Figure 5 , Figures 8-10As shown, the moving path of the workbench 2 is provided with an independent film tearing mechanism 5, which is arranged at the bottom of the first lifting mechanism 15. The independent film tearing mechanism 5 comprises a second adhesive tape unwinding roller 501 and a second adhesive tape winding roller 502 arranged in parallel. The outer periphery of the second adhesive tape unwinding roller 501 is provided with a second film roll 18. The outer periphery of the second adhesive tape winding roller 502 is used to wind a second waste roll 19 of the adhesive tape after the independent release film is adhered. A third positioning roller 503 and a fourth positioning roller 504 are arranged in the same height and symmetrically between the second adhesive tape unwinding roller 501 and the second adhesive tape winding roller 502. The adhesive tape on the outer periphery of the second adhesive tape unwinding roller 501 is wound between the third positioning roller 503, the fourth positioning roller 504 and the second adhesive tape winding roller 502 in sequence. In an embodiment, the second adhesive tape unwinding roller 501, the second adhesive tape winding roller 502, the third positioning roller 503 and the fourth positioning roller 504 are arranged on a positioning frame 505. A driving motor 506 is connected to the positioning frame 505 through a shaft coupling. The second adhesive tape unwinding roller 501 is coaxially connected to the output shaft of the driving motor 506 through a shaft coupling and is driven to rotate around its axis by the driving motor 506. The shaft coupling is drivingly connected to an encoder 508 through a belt gear. The encoder 508 is used to measure the rotating speed of the driving motor 506, the relative position in the circumferential direction of the rotating shaft and other parameters, so as to accurately adjust the unwinding amount of the adhesive tape of the second adhesive tape unwinding roller 501. The connection mode and the measurement mode of the encoder 508 and the motor can refer to the prior art, which will not be described here.

[0039] The second adhesive tape winding roller 502 is rotatably arranged on the positioning frame 505 through a shaft sleeve or a shaft coupling. The second adhesive tape winding roller 502 rotates synchronously with the second adhesive tape unwinding roller 501. In an embodiment, the second adhesive tape winding roller 502 is driven to rotate by a synchronous motor. In another embodiment, the second adhesive tape winding roller 502 is connected to the output shaft of the driving motor 506 through a belt gear. At this time, the winding direction of the second film roll 18 on the second adhesive tape winding roller 502 is opposite to that of the second waste roll 19 on the second adhesive tape unwinding roller 501. The second adhesive tape unwinding roller 501 and the second adhesive tape winding roller 502 are driven synchronously to unwind and wind by the driving motor 506.

[0040] As Figures 8-10As shown, the third positioning roller 503 and the fourth positioning roller 504 are provided with a second positioning pressure head 507, which is a spring needle in an embodiment. The second positioning pressure head 507 is arranged at the top of the adhesive tape between the third positioning roller 503 and the fourth positioning roller 504, and is connected to and driven to lift by the second lifting mechanism 16. When it is necessary to tear off the release film at the bottom of the adhesive tape, the second positioning pressure head 507 is driven to descend by the second lifting mechanism 16 and pushes the adhesive tape to move downward synchronously until the adhesive tape at the bottom of the second positioning pressure head 507 adheres to the surface of the release film to be torn, and then the second positioning pressure head 507 is reset to tear off the release film. Subsequently, the second adhesive tape unwinding roller 501 and the second adhesive tape winding roller 502 rotate synchronously and wind the adhesive tape with the release film to the outer periphery of the second adhesive tape winding roller 502.

[0041] In an embodiment, the first lifting mechanism 15, the second lifting mechanism 16 and the third lifting mechanism 17 are all lifting cylinders, and each of the first lifting mechanism 15, the second lifting mechanism 16 and the third lifting mechanism 17 is provided with a position sensor inside.

[0042] As shown in Figure 1 , Figure 2 , Figure 5 In some embodiments, a scanning mechanism for detecting products is further arranged between the independent film tearing mechanism 5 and the batch film tearing mechanism 1. The scanning mechanism at least includes a camera 6 for detecting the film tearing condition of the products. When the products are batched to tear off the release film, the carrier plate 4 is conveyed from the bottom of the batch film tearing mechanism 1 to the bottom of the independent film tearing mechanism 5 by the workbench 2. During the conveying process, the products pass through the bottom of the camera 6. The image of the products is captured by using the camera 6 and is converted into a digital signal. Then, the digital signal is processed and analyzed by using an image processing algorithm to detect the position of the release film that is not torn off. Subsequently, the release film is torn off by the independent film tearing mechanism 5. The signal processing and analysis of the image can be realized by controller coding, which is prior art and will not be described in detail. In a preferred embodiment, the scanning mechanism further includes a light source for illuminating the products, which will not be described in detail.

[0043] As shown in Figure 6 , Figure 7As shown in the drawings, in some embodiments, the workbench 2 comprises a base 201, two conveying lines arranged in parallel on both sides of the base 201, and a lifting platform 203 arranged between the two conveying lines, the lifting platform 203 can be driven to lift by a cylinder arranged at the bottom thereof, the two conveying lines are provided with a carrier plate 4 for conveying products, the bottom of the base 201 is slidingly connected with a first linear module 7, the first linear module 7 is arranged on a sliding platform 9, the sliding platform 9 is slidingly connected with a second linear module 8, the conveying directions of the first linear module 7 and the second linear module 8 are perpendicular to each other, in an embodiment, the first linear module 7 is arranged along the x-axis direction, the second linear module 8 is arranged along the y-axis direction, and the positioning of the workbench 2 in the x-axis direction and the y-axis direction is realized by adjusting the positions of the base 201 and the first linear module 7 and the position of the sliding platform 9 on the second linear module 8, in addition, the carrier plate 4 can be driven to translate along the z-axis direction by the lifting platform 203 at the bottom of the carrier plate 4, so as to realize the positioning of the carrier plate 4 in the z-axis direction.

[0044] As shown in the drawings, Figure 6 , Figure 7 In some embodiments, a stop mechanism for limiting the conveying position of the carrier plate 4 on the conveying line is arranged at the middle of the two ends of the two conveying belts, the stop mechanism comprises a stop cylinder 10 and / or a first stop block 11, specifically, the stop cylinder 10 or the first stop block 11 can be arranged at the two ends of the two conveying belts, or the stop cylinder 10 is arranged at one end and the first stop block 11 is arranged at the other end; wherein the first stop block 11 is driven to rotate by a first rotary motor 12, the first rotary motor 12 is arranged on the base 201, and the rotation axis of the first stop block 11 (i.e. the axis of the first rotary motor 12) is parallel to the conveying direction of the conveying line, when the first stop block 11 rotates upwards, the end of the carrier plate 4 can be blocked and positioned, when the first stop block 11 rotates downwards, it does not interfere with the movement of the carrier plate 4; the stop cylinder 10 is a lifting cylinder, which blocks the carrier plate 4 by rising and avoids the carrier plate 4 by descending.

[0045] As shown in the drawings, Figure 7As shown, in an embodiment, the two conveying lines comprise side plates 202 erected on both sides of the base 201, and conveying belts 204 arranged inside the side plates 202, the conveying belts can be positioned by rollers symmetrically arranged at both ends of the side plates 202, and the conveying belts 204 are driven to rotate around the rollers by a motor to drive the carrier plate to translate, and both ends of each side plate 202 are further respectively provided with second stop blocks 13 for limiting the height of the carrier plate 4, the second stop blocks 13 are driven to rotate by second rotary motors 14, and the rotation axis of the second stop blocks 13 is perpendicular to the base 201, when it is needed to limit the height position of the carrier plate 4, the four second stop blocks 13 are synchronously rotated to the top of the carrier plate 4 along the axis, when it is not needed to limit the height position of the carrier plate 4, the four second stop blocks 13 are synchronously rotated to the outside of the side plates 202 along the axis, so that the top of the carrier plate 4 is not blocked by the second stop blocks 13, and then the height of the carrier plate 4 is accurately positioned when the release film is removed.

[0046] The utility model still has a variety of implementation manners, all technical schemes formed by using equivalent transformation or equivalent transformation fall within the protection scope of the utility model.

Claims

1. A release film tearing device, comprising a batch film tearing mechanism and a worktable transversely arranged at the bottom of the batch film tearing mechanism and used for supporting products, the top of the products being placed with a cover plate, the cover plate being provided with an escape hole for exposing the products to be torn from the release film, the batch film tearing mechanism comprising at least a first adhesive tape unwinding roller and a first adhesive tape winding roller connected through an adhesive tape winding, and a stripping mechanism movably arranged between the first adhesive tape winding roller and the first adhesive tape unwinding roller, the stripping mechanism tearing the adhesive tape on the surface of the cover plate while passing above the cover plate, characterized in that: The moving path of the workbench is provided with an independent film tearing mechanism, which is arranged at the bottom of the first lifting mechanism and comprises a second adhesive tape unwinding roller and a second adhesive tape winding roller arranged in parallel, and a third positioning roller and a fourth positioning roller arranged in the same height and symmetrically between the second adhesive tape unwinding roller and the second adhesive tape winding roller. The adhesive tape on the outer periphery of the second adhesive tape unwinding roller is sequentially wound between the third positioning roller, the fourth positioning roller and the second adhesive tape winding roller. A second positioning press head is arranged between the third positioning roller and the fourth positioning roller. The second positioning press head is arranged at the top of the adhesive tape between the third positioning roller and the fourth positioning roller, and is connected to and driven to lift by the second lifting mechanism.

2. The release film peeling apparatus according to claim 1, characterized by: A scanning mechanism for detecting products is further arranged between the independent film tearing mechanism and the batch film tearing mechanism. The scanning mechanism at least comprises a camera for detecting the film tearing condition of the products.

3. The release film peeling apparatus according to claim 2, characterized by: The workbench comprises a base, two conveying lines arranged in parallel on both sides of the base, and a lifting platform arranged between the two conveying lines. A carrier plate for conveying products is arranged on the two conveying lines. The bottom of the base is slidably connected with a first linear module. The first linear module is arranged on a sliding platform. The sliding platform is slidably connected with a second linear module. The conveying directions of the first linear module and the second linear module are perpendicular to each other.

4. The release film peeling apparatus according to claim 3, characterized by: A gear position mechanism for limiting the conveying position of the carrier plate on the conveying line is arranged at the middle of the two ends of each conveying belt. The gear position mechanism comprises a gear position cylinder and / or a first gear position block. The first gear position block is driven to rotate by a first rotary motor. The rotation axis of the first gear position block is parallel to the conveying direction of the conveying line.

5. The release film peeling apparatus according to claim 4, characterized by: The two conveying lines comprise side plates erected on both sides of the base, and conveying belts arranged inside the side plates. A second gear position block for limiting the height of the carrier plate is arranged at the two ends of each side plate. The second gear position block is driven to rotate by a second rotary motor. The rotation axis of the second gear position block is perpendicular to the base.

6. The release film peeling apparatus according to claim 3, characterized by: A first positioning roller is arranged at the bottom of the first adhesive tape unwinding roller. A second positioning roller is arranged at the bottom of the first adhesive tape winding roller. The first positioning roller and the second positioning roller are in the same height.

7. The release film peeling apparatus according to claim 6, characterized by: The stripping mechanism comprises a support slidably connected with a translation mechanism. The sliding direction of the support is parallel to the conveying direction of the conveying line. A stripping roller, a first tensioning roller and a second tensioning roller are arranged on the support. The first tensioning roller and the second tensioning roller are symmetrically arranged at the bottom of the stripping roller. The two ends of the stripping roller, the first tensioning roller and the second tensioning roller are fixed to the support through shaft sleeves. The bottom height of the first tensioning roller and the second tensioning roller is higher than the bottom height of the first positioning roller and the second positioning roller.

8. The release film peeling apparatus according to claim 7, characterized by: The outer periphery of the stripping roller and the upper surface of the shutter are both provided with an anti-adhesion layer.

9. The release film peeling apparatus according to claim 1, characterized by: The first adhesive tape unwinding roller and the first adhesive tape winding roller are further provided with a pressing mechanism, the pressing mechanism comprises a pressing plate driven to lift by a third lifting mechanism, the bottom of the pressing plate is arranged with first positioning pressing heads corresponding to the avoiding holes, and the first positioning pressing heads are spring needles.

10. The release film peeling apparatus according to claim 9, characterized by: The first lifting mechanism, the second lifting mechanism and the third lifting mechanism are all internally provided with position sensors.

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