Forming machine boosting device and tire forming machine

Abstract

The utility model provides a building machine boosting device and tire building machine wherein the building machine boosting device comprises a base, a moving frame, a push disc assembly and a locking assembly, the moving frame is supported on the base and is movably arranged along a first direction relative to the base, the push disc assembly is arranged on the moving frame, and the locking assembly is arranged on the base. At least one part of the pushing disc assembly is movably arranged in the second direction relative to the moving frame, an included angle is formed between the first direction and the second direction, and the locking assembly is connected with the moving frame, locks the position of the moving frame when the moving frame moves in place in the first direction and provides support for stress of the moving frame in the second direction. The utility model solves the problem that the service life of the boosting device of the forming machine is influenced by the counter-acting force borne by the pushing disc assembly in the prior art.

Description

Technical Field

[0001] The utility model relates to the field of tire building machines, in particular to a building machine boosting device and a tire building machine. Background Art

[0002] During the forming process of the radial forming machine, when the forming drum is doing the reverse action, an external force is needed to push up the capsule or reverse finger to complete the reverse action of the forming process. The function of forming boost is completed in the main machine direction (axial direction), and the boost reaction force will act on the box body and the guide rail at the same time. In this way, the boost surface cannot be perpendicular to the axial direction, which will cause the guide rail to be subjected to lateral force, resulting in a reduction in the life of the guide rail. Utility Model Content

[0003] The main purpose of the utility model is to provide a propelling device for a tire building machine and a tire building machine, so as to solve the problem in the prior art that the reaction force on the push plate assembly affects the service life of the propelling device for the tire building machine.

[0004] In order to achieve the above-mentioned purpose, according to one aspect of the utility model, a molding machine booster device is provided, including a base, a movable frame, a push plate assembly, and a locking assembly. The movable frame is supported on the base, and the movable frame is movably arranged relative to the base along a first direction. The push plate assembly is arranged on the movable frame, and at least a part of the push plate assembly is movably arranged relative to the movable frame along a second direction. The first direction and the second direction form an angle. The locking assembly is connected to the movable frame, and when the movable frame moves into place along the first direction, the position of the movable frame is locked and support is provided for the force of the movable frame along the second direction.

[0005] Furthermore, the locking assembly includes a locking drive and a locking member. The locking drive is connected to the movable frame and moves synchronously with the movable frame. The locking member is drivingly connected to the locking drive and extends into or out of the external component under the drive of the locking drive to lock the movable frame.

[0006] Furthermore, the locking assembly is located at the bottom of the side surface of the movable frame away from the base along the first direction.

[0007] Furthermore, the boosting device of the molding machine also includes a supporting assembly, which is located at the pushing plate assembly. When the pushing plate assembly is extended along the second direction, the supporting assembly holds up the tail of the drum shaft.

[0008] Furthermore, the supporting assembly includes a supporting driving member and a supporting member, wherein the supporting member is drivingly connected to the supporting driving member and extends under the drum shaft under the driving of the supporting driving member to support the tail of the drum shaft.

[0009] Furthermore, the support member is a support block, which can be moved up and down, and the support driving member drives the support block to rise to support the tail of the drum shaft. The upper surface of the support block has an arc-shaped recess for supporting the drum shaft.

[0010] Furthermore, the support member is a support tube, the axial direction of the support tube is along the second direction, the support driving member drives the support tube to move axially, and is sleeved on the outer side of the drum shaft to support the tail of the drum shaft.

[0011] Furthermore, the support assembly also includes a mounting frame having a guide groove, the support member is located in the guide groove, and extends out of the guide groove from the open end of the guide groove under the drive of the support driving member to support the tail of the drum shaft.

[0012] Furthermore, the molding machine booster device also includes a first driving member, a guide rail, a second driving member, and a power transmission mechanism. The first driving member is connected to the base and is drivingly connected to the mobile frame to drive the mobile frame to move relative to the base. The guide rail is located between the base and the mobile frame and extends along the first direction. The second driving member is connected to the mobile frame, and the power transmission mechanism is connected to the push plate assembly. The second driving member is drivingly connected to the power transmission mechanism and drives the push plate assembly to move in the second direction through the power transmission mechanism.

[0013] According to another aspect of the utility model, a tire building machine is provided, comprising the above-mentioned building machine boosting device.

[0014] By applying the technical solution of the utility model, the position of the mobile frame is fixed by setting a locking assembly to provide support for it, thereby reducing the influence of the reaction force on the boosting device of the molding machine. Specifically, when the boosting device of the molding machine is working, it switches from the initial state to the boosting state, that is, the mobile frame moves from right to left along the base to be in place, and the push plate assembly is set on the mobile frame, so it moves in the left and right directions with the mobile frame. At this time, the locking assembly works to lock the mobile frame and provide support for the mobile frame. In this way, when the push plate assembly moves along the second direction to perform boosting work, the push plate assembly is subjected to a reaction force along the second direction, and acts on the mobile frame and is transmitted to the locking assembly through the mobile frame, so that the locking assembly transmits the reaction force received by the push plate assembly to the outside of the boosting device of the molding machine, on the one hand, avoiding the deformation of the boosting component and the mobile frame due to the reaction force, ensuring that the thrust direction is parallel to the boosting direction during the boosting process, and on the other hand, avoiding the generation of force along the second direction between the mobile frame and the base, thereby reducing the influence of the reaction force on the function of the connecting component between the mobile frame and the base. The setting of the locking assembly effectively protects the reaction force during the boosting process from damaging the push plate assembly, the mobile frame, and the connecting parts between the two, greatly reducing the probability of failure of the boosting device of the molding machine and extending its service life. At the same time, it can also ensure the parallelism of the boosting force and the main axis of the molding machine, thereby improving the quality of the tire. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0016] Figure 1 An axonometric view of a booster device for a molding machine according to a first embodiment of the utility model is shown;

[0017] Figure 2 Shows Figure 1 A schematic diagram of the structure of the boosting device of the molding machine in the boosting state;

[0018] Figure 3 Shows Figure 2 Schematic diagram of the structure of the molding machine booster device in the initial state.

[0019] The above drawings include the following reference numerals:

[0020] 10. Base; 20. Moving frame; 30. Push plate assembly; 40. Locking assembly; 41. Locking drive member; 42. Locking member; 50. Support assembly; 51. Support drive member; 52. Support member; 53. Mounting frame; 60. First drive member; 70. Guide rail; 80. Second drive member; 90. Power transmission mechanism. DETAILED DESCRIPTION

[0021] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0022] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0023] In the present invention, unless otherwise specified, the directional words used, such as "up, down, top, bottom", usually refer to the directions shown in the drawings, or to the components themselves in the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "inside and outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directional words are not used to limit the present invention.

[0024] In order to solve the problem in the prior art that the reaction force on the push plate assembly affects the service life of the molding machine booster device, the utility model provides a molding machine booster device and a tire molding machine, wherein the tire molding machine has the following molding machine booster device.

[0025] Embodiment 1

[0026] like Figures 1 to 3 The shown type of molding machine booster device includes a base 10, a movable frame 20, a push plate assembly 30, and a locking assembly 40. The movable frame 20 is supported on the base 10, and the movable frame 20 is movably arranged along a first direction relative to the base 10. The push plate assembly 30 is arranged on the movable frame 20, and at least a part of the push plate assembly 30 is movably arranged along a second direction relative to the movable frame 20. The first direction and the second direction form an angle. The locking assembly 40 is connected to the movable frame 20, and locks the position of the movable frame 20 when the movable frame 20 moves into place along the first direction and provides support for the force of the movable frame 20 along the second direction.

[0027] In this embodiment, the locking assembly 40 is provided to fix the position of the mobile frame 20, provide support for it, and reduce the influence of the reaction force on the booster device of the molding machine. Figure 3 The initial state is switched to Figure 2 The pushing state, that is, the moving frame 20 moves from the right to the left along the base 10 into position, and the push plate assembly 30 is arranged on the moving frame 20, so it moves into position in the left and right directions with the moving frame 20. At this time, the locking assembly 40 works to lock the moving frame 20 and provide support for the moving frame 20. In this way, when the push plate assembly 30 moves in the second direction for pushing work, the push plate assembly 30 is subjected to a reaction force in the second direction, and acts on the moving frame 20 and is transmitted to the locking assembly 40 through the moving frame 20, so that the locking assembly 40 transmits the reaction force received by the push plate assembly 30 to the outside of the molding machine pushing device, on the one hand, avoiding the pushing component and the moving frame 20 from being deformed by the reaction force, ensuring that the thrust direction is parallel to the pushing direction during the pushing process, and on the other hand, avoiding the generation of force in the second direction between the moving frame 20 and the base 10, reducing the influence of the reaction force on the function of the connecting component between the moving frame 20 and the base 10. The setting of the locking assembly 40 effectively protects the reaction force during the boosting process from damaging the push plate assembly 30, the moving frame 20, and the connecting parts therebetween, thereby greatly reducing the probability of failure of the boosting device of the molding machine and extending its service life. At the same time, it can also ensure that the boosting force is parallel to the main axis of the molding machine, thereby improving the quality of the tire.

[0028] It should be noted that the first direction refers to Figure 1 The left and right directions in the second direction refer to Figure 1 The front-to-back direction.

[0029] In this embodiment, the angle between the first direction and the second direction is set to 90 degrees, that is, the first direction is perpendicular to the second direction. Of course, the two can also form an angle other than 90 degrees, as long as the push plate assembly 30 can be driven to a position that matches the main shaft.

[0030] The locking assembly 40 in the present embodiment comprises a locking driver 41 and a locking member 42, wherein the locking driver 41 is connected to the mobile frame 20 and moves synchronously with the mobile frame 20, and the locking member 42 is driven and connected to the locking driver 41, and extends into or withdraws from the external component under the drive of the locking driver 41 to lock the mobile frame 20. The locking member 42 and the locking driver 41 can be connected by threaded connection, magnetic connection and other connection modes, and the two can be always connected or intermittently connected. The locking driver 41 used in the present embodiment is a cylinder, and when the locking assembly 40 works, the cylinder rod extends, drives the locking member 42 to move, and extends into the external component, so that the mobile frame 20 is locked, so that when the push plate assembly 30 works, the mobile frame 20 is stressed, and the mobile frame 20 can transmit most of the force to the outside through the locking member 42, so as to avoid that the mobile frame 20 will be subjected to the force transmitted to the connecting component between the mobile frame 20 and the base 10, thereby affecting its function. When the push plate assembly 30 is not working, the cylinder rod drives the locking member 42 to withdraw from the external component, so that the locking driving member 41 can move left and right in the first direction with the moving frame 20. Of course, the locking driving member 41 can also use a structure such as an electric cylinder and a screw to drive the locking member 42 to fix and lock the moving frame 20 with the external component.

[0031] Considering that the locking assembly 40 needs to provide force support for the mobile frame 20 along the second direction, the locking member 42 of this embodiment adopts a column structure and adopts an up-and-down moving setting mode. Accordingly, the external component is a through hole or a component with a through hole, and the through hole is arranged longitudinally, so that when the locking member 42 extends downward into the through hole, it can abut against the side wall of the through hole, thereby providing lateral force support for the mobile frame 20. Of course, in addition to the above-mentioned setting mode, the locking member 42 can also be arranged to move horizontally. At this time, the locking member 42 can adopt a hooking and matching mode, for example, the free end of the locking member 42 in the horizontal direction has a hook structure, and the external component has a matching groove, and the side wall of the groove also has a recess, and the hook structure can extend into the groove and hook with the recess on the side wall of the groove, thereby realizing the position locking of the mobile frame 20 in the first direction, and at the same time, the hook structure can abut against the bottom wall of the groove, thereby realizing the force support of the mobile frame 20 in the second direction.

[0032] It should be noted that the above-mentioned external component can be a separately provided bracket, which can be fixedly mounted on the table top, with a longitudinal through hole provided at the top of the bracket, and the locking member 42 extends into or exits the through hole by moving up and down, thereby achieving locking and unlocking. Of course, in addition to the separately provided bracket and other components, the external component can also be a hole groove drilled directly on the platform as the external component.

[0033] The locking assembly 40 in this embodiment is located at the bottom of the side of the mobile frame 20 away from the base 10 along the first direction, that is, Figure 2As shown, the locking assembly 40 is arranged on the left side of the mobile frame 20, so that the locking assembly 40 is located at a position below the side of the push plate assembly 30. In this way, on the one hand, the mobile frame 20 can transfer more of the force along the second direction to the locking assembly 40, rather than the connecting component between the mobile frame 20 and the base 10, thereby affecting its use function. On the other hand, since the locking assembly 40 and the base 10 are located on both sides of the mobile frame 20, the forces on both sides of the mobile frame 20 are balanced, thereby ensuring stability.

[0034] The molding machine booster device in this embodiment also includes a support assembly 50, such as Figure 1 As shown, the support assembly 50 is located at the push plate assembly 30, that is, along the second direction, the support assembly 50 and the push plate assembly 30 are located on the same side of the movable frame 20, and the support assembly 50 is farther away from the movable frame 20 than the push plate assembly 30, so that when the movable frame 20 moves into place, the support assembly 50 can support the drum shaft, and the support assembly 50 can also be hidden inside the push plate assembly 30. In this way, on the one hand, the support assembly 50 can hold up the tail of the drum shaft when the push plate assembly 30 is extended along the second direction to reduce the deflection of the drum shaft and ensure the parallelism between the center of the drum shaft and the main shaft of the forming machine, and has a good effect on the symmetry and taper of the tire turn-up, which can effectively improve the quality of the tire. On the other hand, the support assembly 50 is hidden inside the push plate assembly 30, which can effectively shorten the width direction dimension of the main machine line and save space. When the support assembly 50 acts, it does not hinder the operation of the push plate assembly 30, which can improve efficiency.

[0035] The support assembly 50 in this embodiment includes a support drive member 51 and a support member 52. The support drive member 51 can be connected to the mobile frame 20 or the push plate assembly 30 as needed. The support member 52 is connected to the support drive member 51 and extends under the drum shaft under the drive of the support drive member 51 to hold up the tail of the drum shaft. Specifically, the support drive member 51 can move synchronously with the movement of the mobile frame 20, and drive the support member 52 connected to the support drive member 51 to move synchronously. When the support assembly 50 is in action, the support drive member 51 drives the support member 52 to extend under the drum shaft to support the tail of the drum shaft, reduce the deflection of the drum shaft, ensure the parallelism between the center of the drum shaft and the main shaft, avoid its deformation, and extend its service life. The support drive member 51 in this embodiment is a cylinder, and the extension and retraction of the cylinder rod can drive the support member 52 to extend into and leave the bottom of the drum shaft. Of course, other drive structures such as electric cylinders and screws can also be used to drive the up and down movement of the support member 52.

[0036] like Figure 2As shown, the support member 52 in this embodiment is a support block, and the support member 52 can move up and down under the action of the support driving member 51. When the support assembly 50 moves to the bottom of the drum shaft tail under the drive of the mobile frame 20, the support driving member 51 drives the support block to rise to hold up the drum shaft tail. At the same time, in order to ensure the reliability of the cooperation between the support block and the drum shaft, the present embodiment is provided with an arc-shaped recessed portion for holding up the drum shaft on the upper surface of the support block, and the arc-shaped recessed portion can better match the arc shape of the drum shaft, so that the support block can support the drum shaft tail in the up and down directions, and can also limit it in the left and right directions.

[0037] The support assembly 50 in this embodiment also includes a mounting frame 53, which can be connected to the moving frame 20 or the push plate assembly 30, and the support driving member 51 can be directly connected to the moving frame 20 or the push plate assembly 30, or can be connected to the moving frame 20 or the push plate assembly 30 through the mounting frame 53. In addition to having a mounting support function, the mounting frame 53 in this embodiment also has a guide groove, and the support member 52 is located in the guide groove. Since the support member 52 moves up and down, the guide groove extends up and down, so that the support member 52 can move up and down along the guide groove. The upper end of the guide groove is open, and the support member 52 can extend out of the guide groove from the open end of the guide groove under the drive of the support driving member 51, that is, it moves from bottom to top to move the support member 52 to the lower part of the drum shaft, so as to lift the tail of the drum shaft to support the drum shaft.

[0038] The molding machine boosting device in this embodiment also includes a first driving member 60, a guide rail 70, a second driving member 80, and a power transmission mechanism 90. The first driving member 60 is connected to the base 10 and is drivingly connected to the mobile frame 20 to drive the mobile frame 20 to move relative to the base 10. The guide rail 70 is located between the base 10 and the mobile frame 20 and extends along the first direction. The second driving member 80 is connected to the mobile frame 20, and the power transmission mechanism 90 is connected to the push plate assembly 30. The second driving member 80 is drivingly connected to the power transmission mechanism 90 and drives the push plate assembly 30 to move in the second direction through the power transmission mechanism 90. Specifically, the first driving member 60 is installed on the base 10, and drives the mobile frame 20 to move in the left and right directions along the guide rail 70, so that the molding machine boosting device can move the mobile frame 20 to the boosting position in the working state, and return to the position when not working. Figure 3The first driving member 60 and the second driving member 80 can be set to one or more of the structural forms such as cylinder, electric cylinder, motor, etc., which can realize the movement of the moving frame 20 and the pushing plate assembly 30. The power transmission mechanism 90 can adopt one or more structural forms such as belt drive, gear drive, screw drive, etc. as needed. In this embodiment, the first driving member 60 adopts a cylinder, the second driving member 80 adopts a motor, and the power transmission mechanism 90 adopts the structural form of a screw. The power transmission mechanism 90 cooperates with the screw between the moving frame 20 to achieve the effect of driving the pushing plate assembly 30 to move along the second direction.

[0039] The specific use process of the booster device of the molding machine is as follows: the initial state is as follows Figure 3 As shown, the base 10 is installed on one side of the main machine line (dashed part), and the first driving member 60 retreats the movable frame 20 to the initial state, avoiding the part sleeve on the main machine line, so that the part sleeve on the main machine line can move left and right; when boosting is needed, the first driving member 60 extends, and the movable frame 20 moves to the end position along the guide rail 70; after the movable frame 20 reaches the destination position, the cylinder rod of the locking driving member 41 extends to lock the movable frame 20 to the corresponding position; at this time, the cylinder rod of the supporting assembly 50 extends, and the supporting block slides along the guide groove, and the supporting block lifts the tail of the drum shaft; the second driving member 80 drives the push plate assembly 30 to move in the second direction to complete the boosting of the capsule or the reverse packaging rod; after completing the boosting, the second driving member 80 drives the push plate assembly 30 to return to the initial state; at the same time, the cylinder rods of the locking assembly 40 and the supporting assembly 50 are retracted, and the first driving member 60 drives the movable frame 20 to return to the initial state.

[0040] Embodiment 2

[0041] What is different from the first embodiment is that the support member 52 of this embodiment is arranged differently.

[0042] The support member 52 in this embodiment is a support tube, and the axial direction of the support tube is along the second direction, which is the movement direction of the push plate assembly 30. The support driving member 51 drives the support tube to move axially and is sleeved on the outer side of the drum shaft to lift the tail of the drum shaft to support it. At the same time, the cylindrical structure can limit the drum shaft in the circumferential direction, reduce the displacement of the drum shaft in the circumferential direction, and reduce the deflection of the drum shaft.

[0043] It should be noted that, the multiple in the above embodiments refers to at least two.

[0044] From the above description, it can be seen that the above embodiments of the utility model achieve the following technical effects:

[0045] 1. The locking component is set to ensure that the force direction is parallel to the pushing direction during the boosting process;

[0046] 2. Setting the support assembly reduces the deflection of the drum shaft;

[0047] 3. The supporting components are set inside the mobile frame, which effectively shortens the length of the main machine and reduces the running time.

[0048] Obviously, the embodiments described above are only some embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0049] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0050] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0051] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A booster device for a molding machine, characterized in that: include: Base (10); A movable frame (20), the movable frame (20) being supported on the base (10), and the movable frame (20) being movably arranged along a first direction relative to the base (10); A push plate assembly (30), the push plate assembly (30) being arranged on the movable frame (20), and at least a portion of the push plate assembly (30) being movably arranged along a second direction relative to the movable frame (20), the first direction and the second direction forming an angle; A locking assembly (40) is connected to the movable frame (20) and locks the position of the movable frame (20) when the movable frame (20) moves into position along the first direction and provides support for the force applied to the movable frame (20) along the second direction.

2. The booster device for a molding machine according to claim 1, characterized in that: The locking assembly (40) comprises: A locking drive member (41), the locking drive member (41) is connected to the moving frame (20) and moves synchronously with the moving frame (20); A locking member (42) is drivingly connected to the locking drive member (41) and extends into or out of the external component under the drive of the locking drive member (41) to lock the moving frame (20).

3. The booster device for a molding machine according to claim 1, characterized in that: The locking assembly (40) is located at the bottom of the side surface of the movable frame (20) away from the base (10) along the first direction.

4. The booster device for a molding machine according to any one of claims 1 to 3, characterized in that: The molding machine boosting device further comprises a supporting assembly (50), wherein the supporting assembly (50) is located at the pushing plate assembly (30), and when the pushing plate assembly (30) extends along the second direction, the supporting assembly (50) holds up the tail of the drum shaft.

5. The booster device for a molding machine according to claim 4, characterized in that: The support assembly (50) comprises: A supporting driving member (51); A support member (52), wherein the support member (52) is drivingly connected to the support driving member (51), and extends under the drum shaft under the drive of the support driving member (51) to support the tail of the drum shaft.

6. The booster device for a molding machine according to claim 5, characterized in that: The support member (52) is a support block, and the support member (52) can be moved up and down. The support driving member (51) drives the support block to rise to support the tail of the drum shaft. The upper surface of the support block has an arc-shaped recessed portion for supporting the drum shaft.

7. The booster device for a molding machine according to claim 5, characterized in that: The support member (52) is a support tube, the axial direction of the support tube is along the second direction, the support driving member (51) drives the support tube to move axially, and is sleeved on the outer side of the drum shaft to support the tail of the drum shaft.

8. The booster device for a molding machine according to claim 5, characterized in that: The support assembly (50) also includes a mounting frame (53), the mounting frame (53) has a guide groove, the support member (52) is located in the guide groove, and extends out of the guide groove from the open end of the guide groove under the drive of the support driving member (51) to support the tail of the drum shaft.

9. The booster device for a molding machine according to any one of claims 1 to 3, characterized in that: The molding machine boosting device also includes: A first driving member (60), the first driving member (60) being connected to the base (10) and drivingly connected to the movable frame (20) so as to drive the movable frame (20) to move relative to the base (10); A guide rail (70), the guide rail (70) being located between the base (10) and the movable frame (20) and extending along the first direction; A second driving member (80), the second driving member (80) being connected to the moving frame (20); A power transmission mechanism (90) is connected to the push plate assembly (30); the second driving member (80) is drivingly connected to the power transmission mechanism (90) and drives the push plate assembly (30) to move along the second direction through the power transmission mechanism (90).

10. A tire building machine, characterized in that: The molding machine boosting device comprises the molding machine boosting device according to any one of claims 1 to 9.

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