A mold capable of producing a variety of products

Abstract

The application relates to the technical field of molds, in particular to a mold capable of producing various products, which comprises a pressing plate and a lower plate, the lower plate is provided with a pressure receiving groove at the upper end, the bottom of the pressing plate is provided with a pressure receiving groove; a movable piece is arranged in the middle of the pressing plate, and the movable piece is used when producing a rubber cloth piece with a hole in the inner part; a positioning piece is arranged outside the movable piece, the outer side of the positioning piece is provided with a side piece, the outer side of the side piece is provided with an elastic piece, and the positioning piece is used for positioning the movable piece when producing a rubber cloth piece without a hole; an expanding piece is arranged at the upper end of the pressing plate, the inner side of the expanding piece is provided with an expanding and pushing piece, and the expanding piece and the expanding and pushing piece are used for moving the positioning piece when the movable piece is moved; and the movable piece arranged in the mold can facilitate the production of rubber cloth pieces with different inner diameter structures.

Description

Technical Field

[0001] This invention relates to the field of molds, and in particular to a mold capable of producing a variety of products. Background Technology

[0002] Rubber-reinforced fabric diaphragms are sealing materials, typically consisting of two thin rubber sheets sandwiching a thin elastic membrane. They are primarily used for sealing automotive engines and other mechanical equipment, effectively preventing liquid or gas leaks. Fabric-reinforced diaphragms offer excellent sealing and wear resistance, and can withstand high pressure and high temperatures. They are commonly used in engine cylinder heads, intake manifolds, exhaust systems, and other areas requiring sealing. Fabric-reinforced diaphragms can also be customized and processed to meet specific application scenarios and requirements.

[0003] Rubber-lined fabric diaphragms are generally produced by hot stamping using molds. When producing rubber-lined fabric diaphragms with the same outer diameter and film thickness, but different inner diameter structures (such as...), Figure 1 The usual approach is to create corresponding molds for different structures. However, designing and manufacturing molds separately for this purpose results in higher overall production costs, so further improvements and optimizations are needed. Summary of the Invention

[0004] The purpose of this invention is to provide a mold that can produce a variety of products, in order to solve the problem mentioned in the background art of producing rubber-insulated diaphragms with the same outer diameter and film thickness and the same material, but different inner diameter structures. The corresponding solution is to make corresponding molds for different structures, which requires designing and making molds separately, resulting in high overall manufacturing costs.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a mold capable of producing multiple products, comprising a pressure plate and a lower plate, wherein the upper end of the lower plate is provided with a pressure groove, and the bottom of the pressure plate is provided with a pressure groove.

[0006] The movable part is located in the middle of the inside of the pressure plate. The movable part is used when producing a film sheet with internal holes for clamping fabric.

[0007] The positioning component is located outside the movable component. A side piece is provided outside the positioning component, and an elastic element is provided outside the side piece. The positioning component is used to position the movable component when producing a film sheet without holes for interlocking fabric.

[0008] An expansion member is located at the upper end of the pressure plate. An expansion pusher is provided inside the expansion member. The expansion member and the expansion pusher are used to move the positioning member when the moving member is moved.

[0009] The push-down elastic element is located at the upper end of the movable part and is used to push the movable part downward into the pressure groove.

[0010] Size extender, located on the outside of the movable part, is used to increase the size of the movable part when producing membrane sheets with different sized holes;

[0011] The rotating component is located inside the movable component. An external moving component is provided at the bottom of the rotating component. The external moving component is used to connect the dimension-adding component to increase the size of the movable component.

[0012] Preferably, the pressure plate has a movable cavity in the middle, the movable cavity is a circular columnar groove, the bottom of the movable cavity penetrates the pressure plate, and a movable component is movably arranged inside the movable cavity, the movable component is a vertical columnar component.

[0013] Preferably, the movable part has a positioning groove inside, which is a transverse rod-shaped groove with a T-shaped cross section, and both sides of the positioning groove penetrate the movable part.

[0014] Preferably, positioning elements are provided on both sides of the movable part. The positioning elements are wedge-shaped rods, and the inner ends of the positioning elements are semi-circular. The inner sides of the positioning elements are located in positioning grooves.

[0015] Preferably, each positioning member has a side plate fixedly connected to its outer side. The side plate is a vertical plate-shaped member. Each side plate has multiple sets of elastic members fixedly connected to its outer side. Each side plate has a pusher fixedly connected to its upper end. Each pusher penetrates the pressure plate at its upper end.

[0016] Preferably, both sides of the pusher are provided with expansion members, which are all horizontal plate-shaped members. Both sides of the expansion members are provided with shifting grooves, which are all horizontal grooves. The outer side of the shifting grooves penetrates the expansion members. The upper and lower sides of the shifting grooves are provided with limiting grooves, which are all horizontal grooves. The upper and lower sides of the limiting grooves penetrate the expansion members.

[0017] Preferably, each of the moving grooves is movably provided with an expanding member, which is set as an inclined rod-shaped member. The inner side of the expanding member passes through the moving groove and extends to the outer side. Each of the upper and lower ends of one side of the expanding member is provided with a limiting member corresponding to the limiting groove. The limiting members are all located inside the limiting groove. Each of the other sides of the expanding member is movably provided with a fixing member, which is fixedly connected to both sides of the pushing member.

[0018] Preferably, multiple sets of dimensional extension components are equidistantly arranged on the outer side of the movable component. All dimensional extension components are configured as annular structures, and each dimensional extension component has a mating groove at its upper end. The mating groove is configured as a transverse groove, and each mating groove is aligned with a positioning groove. Each positioning component is located within the mating groove.

[0019] Preferably, each of the upper ends of the positioning groove is movably provided with a rotating component, which is a disc-shaped component. The outer bottom of each rotating component is fixedly connected with a rotating tooth, which is a spiral tooth. Inside the positioning groove, corresponding to the positioning component, there are two sets of outward moving components, which are L-shaped plate-shaped components. The outer ends of the outward moving components abut against the positioning component. The upper end of each outward moving component is provided with a push tooth at equal intervals corresponding to the rotating tooth, and the rotating tooth and the push tooth mesh.

[0020] Preferably, each rotating component has a rotating shaft fixedly connected to its upper end. The upper end of each rotating shaft passes through the pressure plate and extends to the outside. Each rotating shaft has a rotating block fixedly connected to its upper end. Each rotating block is a circular disc-shaped component. Multiple sets of auxiliary grooves are arranged in an annular pattern on the outer side of each rotating block.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] The present invention proposes a movable component that can be set inside the mold to produce a variety of products. This facilitates the production of rubber-insulated diaphragms with different inner diameter structures, avoids the need to design and manufacture different molds for them, reduces design and manufacturing costs, and improves the overall utilization rate of the mold.

[0023] By using the expansion member and the pusher member, it is easy to push the positioning member away from the positioning groove, so that the pusher elastic member can push the movable member into the pressure groove, which is convenient for producing fabric-reinforced films with inner diameter holes.

[0024] By using a rotating component in conjunction with an external moving component, it is easy to connect the dimensional addition component with the movable component, thereby increasing the size of the movable component. This facilitates the production of fabric-reinforced films with different sizes of inner diameter holes, further improving the utilization rate of the mold. Attached Figure Description

[0025] The present invention will be further described below with reference to the accompanying drawings:

[0026] Figure 1 Rubber-insulated diaphragms with different inner diameter structures;

[0027] Figure 2 This is a schematic diagram of the structure of the present invention;

[0028] Figure 3 This is a schematic diagram of the pressure plate structure of the present invention;

[0029] Figure 4 This is a schematic diagram of the cross-sectional structure of the pressure plate of the present invention;

[0030] Figure 5 This is a schematic diagram of the structure of the movable component of the present invention;

[0031] Figure 6 This is a schematic diagram of the expansion component structure of the present invention;

[0032] Figure 7 This is a schematic cross-sectional view of the dimensional addition component structure of the present invention;

[0033] Figure 8 This is a schematic diagram of the rotating component structure of the present invention.

[0034] In the diagram: 1. Pressure plate; 2. Lower plate; 3. Pressure groove; 4. Pressure groove; 5. Movable cavity; 6. Movable part; 7. Positioning groove; 8. Positioning part; 9. Side piece; 10. Elastic part; 11. Pushing part; 12. Expanding part; 13. Moving groove; 14. Expanding and pushing part; 15. Limiting groove; 16. Limiting part; 17. Fixing part; 18. Pushing elastic part; 19. Size-adding part; 20. Connecting groove; 21. Rotating part; 22. Rotating tooth; 23. Outward moving part; 24. Pushing tooth; 25. Rotating shaft; 26. Rotating block. Detailed Implementation

[0035] To more clearly illustrate the overall concept of the present invention, a detailed description will be provided below with reference to the accompanying drawings and examples.

[0036] It should be noted that many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0037] Furthermore, in the description of this invention, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0038] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral unit; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. However, specifying a direct connection indicates that the two connected entities do not establish a connection relationship through an intermediate structure, but are simply connected to form a whole through a connecting structure. For those skilled in the art, the specific meaning of the above terms in this invention can be understood according to the specific circumstances.

[0039] In this invention, unless otherwise expressly specified and limited, the first feature "on" or "below" the second feature may be in direct contact with the first and second features, or indirect contact through an intermediate medium. In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0040] Please see Figures 2-3 This invention provides a technical solution: a mold capable of producing multiple products, comprising a pressure plate 1 and a lower plate 2, wherein the upper end of the lower plate 2 is provided with a pressure groove 3, and the bottom of the pressure plate 1 is provided with a pressure groove 4. The pressure plate 1 and the lower plate 2 cooperate for hot stamping of a rubber-insulated diaphragm.

[0041] Please see Figure 4 A movable cavity 5 is provided in the middle of the pressure plate 1. The movable cavity 5 is a circular columnar groove. The bottom of the movable cavity 5 penetrates the pressure plate 1. A movable part 6 is movably provided inside the movable cavity 5. The movable part 6 is a vertical columnar part. The movable part 6 is used when producing a film sheet with holes inside.

[0042] Please see Figures 4-5 Since it is also necessary to produce fabric-reinforced films without holes, a positioning groove 7 is provided inside the movable part 6. The positioning groove 7 is a transverse rod-shaped groove with a T-shaped cross section. The movable part 6 is penetrated on both sides of the positioning groove 7. Positioning parts 8 are provided on both sides of the movable part 6. The positioning parts 8 are wedge-shaped rods with semi-circular inner ends. The inner sides of the positioning parts 8 are located in the positioning groove 7. The positioning parts 8 cooperate with the positioning groove 7 to facilitate the fixation of the movable part 6, so as to position the movable part 6 when producing fabric-reinforced films without holes.

[0043] Since the movable part 6 will move during stamping after it moves down, side pieces 9 are fixedly connected to the outside of the positioning piece 8. The side pieces 9 are set as vertical plate-shaped pieces. Multiple sets of elastic pieces 10 are fixedly connected to the outside of the side pieces 9. The elastic pieces 10 can push the positioning piece 8 inward after the movable part 6 moves down, so that the positioning piece 8 comes to the upper end of the movable part 6 and positions the movable part 6 after it moves down, so as to prevent the movable part 6 from moving during stamping. Pushing pieces 11 are fixedly connected to the upper end of the side pieces 9. The upper end of the pushing pieces 11 passes through the pressure plate 1. The pushing pieces 11 are used to move the positioning piece 8 when the movable part 6 is recovered.

[0044] Please see Figure 6Since both sets of positioning members 8 need to be pushed simultaneously to release the restriction on the movable member 6, expansion members 12 are provided on both sides of the pushing member 11. Each expansion member 12 is a horizontal plate-like member. Each expansion member 12 has a shifting groove 13 on both sides, which is a horizontal groove. The outer side of each shifting groove 13 penetrates the expansion member 12. Limiting grooves 15 are provided on both the upper and lower sides of each shifting groove 13, and these limiting grooves 15 are horizontal grooves. The upper and lower sides of each limiting groove 15 penetrate the expansion member 12. An expanding pusher 14 is movably installed inside each shifting groove 13. Each expanding pusher 14 is an inclined rod-like member. The inner side of each expanding pusher 14 penetrates the shifting groove 13 and extends to the outer side. The upper and lower ends of one side of the expanding pusher 14... Each limiting groove 15 is provided with a limiting member 16. The limiting member 16 is located inside the limiting groove 15. The limiting groove 15 inside the limiting member 16 can facilitate the lateral movement of the limiting member 16. By pinching the two sets of expansion members 12 inward, the expansion members 12 squeeze the limiting member 16 through the side wall of the limiting groove 15, so that the tilt angle of the expansion member 14 changes. The other side of the expansion member 14 is provided with a fixing member 17. The fixing member 17 is fixedly connected to both sides of the push member 11. The fixing member 17 and the push member 11 can push the push member 11 outward when the tilt angle of the expansion member 14 changes, so that the positioning member 8 can move and contact the limiting of the movable member 6.

[0045] Please see Figure 7 Since the hole sizes of different fabric-reinforced membrane sheets vary when producing perforated fabric-reinforced membrane sheets, multiple sets of size-adding parts 19 are equidistantly arranged on the outside of the movable part 6. The size-adding parts 19 are all designed as ring structures. The ring-shaped size-adding parts 19 can increase the size of the movable part 6 to achieve the required perforation size of the fabric-reinforced membrane sheet. The upper end of each size-adding part 19 is provided with a docking groove 20. The docking groove 20 is a transverse groove. The docking groove 20 is aligned with the positioning groove 7. The positioning parts 8 are all located inside the docking groove 20. The positioning parts 8 located inside the docking groove 20 can limit the size-adding parts 19 and prevent the size-adding parts 19 from moving when they are not needed.

[0046] Please see Figure 8Rotating components 21 are movably arranged on the upper end of the positioning groove 7. Each rotating component 21 is a disc-shaped component. Rotating teeth 22 are fixedly connected to the outer bottom of each rotating component 21. The rotating teeth 22 are spiral teeth. Inside the positioning groove 7, corresponding to the positioning component 8, two sets of outward moving components 23 are arranged. Each outward moving component 23 is an L-shaped plate. The outer ends of the outward moving components 23 abut against the positioning component 8. Pushing teeth 24 are equidistantly arranged on the upper end of each outward moving component 23 corresponding to the rotating teeth 22. The rotating teeth 22 and the pushing teeth 24 mesh. Through the meshing of the rotating teeth 22 and the pushing teeth 24, the outward moving component 23 can be easily pushed, thereby pushing the positioning component 8 outward. When the outward moving component 23 enters the docking groove 20 in the required size adding component 19, the corresponding size adding component 19 can be connected to the movable component 6 to increase the size of the movable component 6, so as to produce fabric-reinforced films with different hole sizes.

[0047] Meanwhile, each rotating component 21 is fixedly connected to a rotating shaft 25 at its upper end. The upper end of the rotating shaft 25 passes through the pressure plate 1 and extends to the outside. Each rotating shaft 25 is fixedly connected to a rotating block 26. The rotating block 26 is a circular disc-shaped component. Multiple sets of auxiliary grooves are arranged in an annular pattern on the outer side of the rotating block 26. The rotating block 26 facilitates the rotation of the rotating component 21. The design of the auxiliary grooves can effectively prevent the hand from slipping.

[0048] In the production of a fabric-reinforced membrane with holes, the present invention first determines the size of the internal holes of the fabric-reinforced membrane, then rotates the rotating block 26. The rotating block 26 drives the rotating component 21 to rotate via the rotating shaft 25. The rotating component 21, through the meshing of the rotating teeth 22 and the pushing teeth 24, causes the outward moving component 23 to move outward along the positioning groove 7. The outward moving component 23 pushes the positioning component 8 away from the positioning groove 7, and at the same time pushes the positioning component 8 away from the docking groove 20 in the corresponding size-adding component 19, so that the outward moving component 23 fixes the corresponding size-adding component 19. After fixing the size-adding component 19 to the required size, the expansion component 12 can be pinched inward. The expansion component 12 passes through the limiting groove 15. The side wall pushes the limiting member 16, which is movable. The limiting member 16 pushes the expanding member 14 to expand outward. The expanding member 14 pushes the pushing member 11 to move through the fixing member 17. The pushing member 11 drives the positioning member 8 to move through the side plate 9, so that the positioning member 8 leaves the docking groove 20 of the dimension-adding member 19 where the outward moving member 23 is located. The downward pushing elastic member 18 pushes the movable member 6 to move down through its own elastic force, so that the pressure plate 1 can produce the fabric-reinforced film of the corresponding size. At the same time, after the movable member 6 moves down, the elastic member 10 pushes the side plate 9 to move through its own elastic force, so that the positioning member 8 comes to the upper end of the dimension-adding member 19 after it moves down, and fixes it to prevent it from moving and affecting the stamping.

[0049] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the invention (including the claims) is limited to these examples; within the framework of the invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in the details for the sake of brevity.

[0050] This invention is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A mold capable of producing multiple products, comprising a pressure plate (1) and a lower plate (2), wherein the upper end of the lower plate (2) is provided with a pressure groove (3) and the bottom of the pressure plate (1) is provided with a pressure groove (4), characterized in that: Movable part (6), located in the middle of the inside of the pressure plate (1), is used when producing a film with internal holes for clamping fabric; Positioning element (8) is located outside the movable element (6). A side piece (9) is provided outside the positioning element (8). An elastic element (10) is provided outside the side piece (9). The positioning element (8) is used to position the movable element (6) when producing a film without holes and fabric. An expansion member (12) is located at the upper end of the pressure plate (1). An expansion push member (14) is provided inside the expansion member (12). The expansion member (12) and the expansion push member (14) are used to move the positioning member (8) when the movable member (6) is moved. The push elastic element (18) is located at the upper end of the movable part (6). The push elastic element (18) is used to push the movable part (6) down into the pressure groove (4). Size adder (19) is located outside the movable part (6). Size adder (19) is used to increase the size of the movable part (6) when producing fabric-insulated films with different sized holes. Rotating component (21) is located inside movable component (6). An outward displacement component (23) is provided at the bottom of rotating component (21). The outward displacement component (23) is used to connect dimension-adding component (19) to increase the size of movable component (6). The pressure plate (1) has a movable cavity (5) in the middle. The movable cavity (5) is a circular columnar groove. The bottom of the movable cavity (5) passes through the pressure plate (1). A movable part (6) is movably arranged inside the movable cavity (5). The movable part (6) is a vertical columnar part. The movable part (6) is provided with a positioning groove (7) inside. The positioning groove (7) is a transverse rod-shaped groove with a T-shaped cross section. Both sides of the positioning groove (7) penetrate the movable part (6). The movable part (6) is provided with positioning parts (8) on both sides. The positioning parts (8) are wedge-shaped rods. The inner ends of the positioning parts (8) are semi-circular. The inner sides of the positioning parts (8) are located in the positioning grooves (7). The positioning member (8) is fixedly connected to a side piece (9) on the outside. The side piece (9) is set as a vertical plate. Multiple sets of elastic members (10) are fixedly connected to the outside of the side piece (9). A pusher (11) is fixedly connected to the upper end of the side piece (9). The upper end of the pusher (11) passes through the pressure plate (1). The pusher (11) is provided with expansion members (12) on both sides. The expansion members (12) are all horizontal plate-shaped members. The expansion members (12) are provided with shifting grooves (13) on both sides. The shifting grooves (13) are all horizontal grooves. The outer side of the shifting grooves (13) penetrates the expansion members (12). The upper and lower sides of the shifting grooves (13) are provided with limiting grooves (15). The limiting grooves (15) are all horizontal grooves. The upper and lower sides of the limiting grooves (15) penetrate the expansion members (12). Each of the moving grooves (13) is movably provided with an expanding member (14). The expanding member (14) is set as an inclined rod-shaped member. The inner side of the expanding member (14) passes through the moving groove (13) and extends to the outer side. The upper and lower ends of one side of the expanding member (14) are provided with limiting members (16) corresponding to the limiting groove (15). The limiting members (16) are all located inside the limiting groove (15). The other side of the expanding member (14) is movably provided with a fixing member (17). The fixing member (17) is fixedly connected to both sides of the pushing member (11). Multiple sets of size-adding parts (19) are equidistantly arranged on the outer side of the movable part (6). The size-adding parts (19) are all set as ring structures. The upper end of the size-adding parts (19) is provided with a docking groove (20). The docking groove (20) is set as a transverse groove. The docking groove (20) is aligned with the positioning groove (7). The positioning parts (8) are all located in the docking groove (20). The upper end of the positioning groove (7) is movably provided with a rotating part (21), the rotating part (21) is set as a disc-shaped part, the bottom outer side of the rotating part (21) is fixedly connected with a rotating tooth (22), the rotating tooth (22) is set as a spiral tooth, the positioning groove (7) is provided with two sets of outward moving parts (23) corresponding to the positioning part (8), the outward moving parts (23) are set as L-shaped plate-shaped parts, the outer end of the outward moving parts (23) abuts against the positioning part (8), the upper end of the outward moving parts (23) is provided with push teeth (24) equidistantly corresponding to the rotating tooth (22), the rotating tooth (22) and the push tooth (24) mesh; The upper end of each rotating component (21) is fixedly connected to a rotating shaft (25). The upper end of each rotating shaft (25) passes through the pressure plate (1) and extends to the outside. The upper end of each rotating shaft (25) is fixedly connected to a rotating block (26). Each rotating block (26) is set as a circular disc. Multiple sets of auxiliary grooves are arranged in an annular shape on the outside of each rotating block (26). When producing a fabric-reinforced membrane with holes, the size of the holes inside the fabric-reinforced membrane is first determined. Then, the rotating block (26) is rotated. The rotating block (26) drives the rotating part (21) to rotate through the rotating shaft (25). The rotating part (21) is engaged with the pushing tooth (24) through the rotating tooth (22), so that the outer moving part (23) moves outward along the positioning groove (7). The outer moving part (23) pushes the positioning part (8) away from the positioning groove (7), and at the same time pushes the positioning part (8) away from the docking groove (20) in the corresponding size-adding part (19), so that the outer moving part (23) fixes the corresponding size-adding part (19). After fixing to the size-adding part (19) of the required size, the expansion part (12) can be pinched inward. The expansion part (12) is limited by the limit. The side wall of the groove (15) pushes the limiting member (16), and the movable limiting member (16) pushes the expanding member (14) to expand outward. The expanding member (14) pushes the pushing member (11) to move through the fixing member (17). The pushing member (11) drives the positioning member (8) to move through the side piece (9), so that the positioning member (8) leaves the docking groove (20) of the dimension adding member (19) where the moving member (23) is located. The downward pushing elastic member (18) pushes the movable member (6) to move down through its own elastic force, so that the pressure plate (1) can produce the fabric-insulated film of the corresponding size. At the same time, after the movable member (6) moves down, the elastic member (10) pushes the side piece (9) to move through its own elastic force, so that the positioning member (8) comes to the upper end of the dimension adding member (19) after it moves down and fixes it.

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