Steel wire surface lubricating powder sweeping device

Abstract

The invention relates to the technical field of metal wire machining auxiliary equipment, and discloses a steel wire surface lubricating powder sweeping device which comprises a rotating cylinder, the outer wall of the rotating cylinder is sleeved with a supporting base, a pneumatic and negative pressure assembly is fixedly assembled on the outer wall of the supporting base, and a friction driving grinding assembly is fixedly assembled on the inner wall of one end of the rotating cylinder. A plurality of cleaning brushes are fixedly assembled on the inner wall of the other end of the rotating cylinder in a surrounding mode. The friction driving grinding assembly and the cleaning brush are arranged and rotate along with the rotating cylinder, when a steel wire penetrates through the device, surface powder can be swept away through the cleaning brush, the surface of the steel wire can be ground and polished through the friction wheel, the composite cleaning effect of first brushing and then grinding is achieved, cleaning is more thorough, and meanwhile the cleaning efficiency is improved. The rotation of the rotating cylinder ensures that the polishing and cleaning actions can uniformly act on the surface of the steel wire at 360 degrees, and cleaning dead angles are avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of metal wire processing auxiliary equipment, in particular to a steel wire surface lubricating powder sweeping device. BACKGROUND

[0002] In the drawing production process of metal wire (especially steel wire), in order to reduce the friction between the drawing die and the steel wire, reduce the heat and prolong the service life of the die, a professional drawing lubricant (commonly known as "drawing powder", which usually contains talc, lime, saponified material, etc.) must be used.

[0003] However, after the steel wire is drawn, a layer of lubricating powder will inevitably remain and adhere to its surface. This layer of residual powder will have a serious adverse effect on the subsequent processing procedures, for example: when electroplating or spraying is carried out, the residual lubricating powder will cause poor adhesion of the plating or coating, which is easy to fall off, affecting the product quality; at the same time, the powder may also fall off in the subsequent process, polluting the production equipment and workshop environment.

[0004] The existing cleaning methods are usually simple, such as passive cleaning by air nozzle blowing or fixed brush. These methods have many defects: first, the cleaning effect is not good, and it is difficult to completely remove the closely adhered lubricating powder; second, the existing cleaning device usually does not have the function of online polishing of the steel wire surface, and cannot further improve the surface finish of the steel wire while cleaning; third, it is difficult to achieve 360-degree uniform cleaning of the high-speed moving steel wire, and it is easy to produce cleaning dead angles; finally, the powder blown off during cleaning is easy to fly in the workshop, causing secondary pollution, endangering the health of the operators and affecting other precision equipment.

[0005] Therefore, there is an urgent need for a device to solve the above technical problems. SUMMARY

[0006] The present application provides a steel wire surface lubricating powder sweeping device, which solves the problems raised in the background art.

[0007] The present application provides the following technical solution: a steel wire surface lubricating powder sweeping device, comprising a rotating cylinder, the outer wall of the rotating cylinder is sleeved with a support seat, the outer wall of the support seat is fixedly assembled with a pneumatic and negative pressure assembly, the inner wall of one end of the rotating cylinder is fixedly assembled with a friction drive polishing assembly, and the inner wall of the other end of the rotating cylinder is fixedly assembled with a plurality of cleaning brushes.

[0008] As a preferred technical solution of the present application: the rotating cylinder comprises a cylinder body, a powder guide groove is formed in the inner wall of one end of the cylinder body, a plurality of powder discharge ports are formed in the inner wall of the end portion near the center of the powder guide groove, and a mounting groove is formed in the outer wall of the end of the cylinder body away from the powder guide groove; The inner wall of the mounting groove is provided with a sliding groove and a plug-in groove, and the outer wall of the cylinder is provided with a bolt hole corresponding to the position of the plug-in groove.

[0009] As a preferred technical solution of the present application: The inside of the powder guide groove is provided with a threaded guide groove. A plurality of friction drive polishing assemblies are fixedly assembled with the inner wall of the mounting groove, and a plurality of cleaning brushes are fixedly assembled with the inner wall of the powder guide groove.

[0010] As a preferred technical solution of the present application: the support seat comprises a base, the two sides of the base are respectively fixedly assembled with a first support plate and a second support plate, the bottom outer wall of the first support plate is provided with a connecting groove, the top of the second support plate is provided with a limiting hole, the inner wall of the first support plate is sleeved with a bearing, and the inner cavity of the base is sleeved with a powder collecting cavity. The inner wall of the bearing is sleeved and fixed with the outer wall of the cylinder.

[0011] As a preferred technical solution of the present application: the air and negative pressure assembly comprises a fan, the exhaust port of the fan is connected with an air inlet pipe fixedly assembled with the outer wall of the first support plate, the end of the air inlet pipe is communicated with an air force cavity, the outer side of the air force cavity is communicated with an air outlet pipe, and the end of the air outlet pipe is communicated with the inner cavity of the base.

[0012] As a preferred technical solution of the present application: the air and negative pressure assembly further comprises a powder suction pipe corresponding to the position of the powder discharge port, and the bottom of the powder suction pipe is communicated with a negative pressure pipe communicated with the air outlet pipe. The air and negative pressure assembly further comprises a plurality of drive blades surrounding the outer wall of the cylinder and fixedly assembled with the outer wall of the cylinder, and a plurality of drive blades are located on the inner wall of the air force cavity.

[0013] As a preferred technical solution of the present application: the friction drive polishing assembly comprises an assembly base, the outer wall of the assembly base is fixedly assembled with a sliding block, the inner wall of the assembly base is clamped with an elastic piece, the top inner wall of the elastic piece is clamped with a fixed plug, the top of the assembly base is fixedly assembled with a connecting frame, the outer wall of the side of the assembly base close to the connecting frame is rotatably connected with a friction wheel, the shaft head of the side of the friction wheel away from the assembly base is sleeved with a limiting shaft sleeve, the top of the limiting shaft sleeve is rotatably connected with a transmission wheel, and the top of the transmission wheel is fixedly assembled with a drive shaft rotatably connected with the end inner wall of the connecting frame.

[0014] The rotation axis of the friction wheel and the advancing direction of the steel wire form a preset included angle, and the preset included angle is 15°-45°.

[0015] The assembly base is sleeved with the inner wall of the sliding groove through the sliding block, the end of the fixed bolt is inserted into the inner wall of the insertion groove, and the bolt hole is provided with a bolt for fixing the fixed bolt.

[0016] The outer wall of the driving shaft is sleeved with a bearing, and the driving shaft abuts against the outer wall of the limiting hole through the bearing.

[0017] The present application has the following advantages: 1、The steel wire surface lubricating powder removing device is provided with a friction driving polishing assembly and a cleaning brush, and rotates together with the rotating cylinder. When the steel wire passes through, not only the surface powder can be removed by the cleaning brush, but also the surface of the steel wire can be polished and polished by the friction wheel, realizing the composite cleaning effect of "brushing first and then polishing", and the cleaning is more thorough. At the same time, the rotation of the rotating cylinder ensures that the polishing and cleaning actions can uniformly act on the surface of the steel wire in 360 degrees, avoiding the cleaning dead angle.

[0018] 2、The steel wire surface lubricating powder removing device is provided with a powder guide groove with a threaded guide groove in the rotating cylinder, and cooperates with the negative pressure suction function of the air-driven and negative pressure assembly. When the rotating cylinder rotates, the threaded guide groove guides the waste powder to the powder discharge port like a screw conveyor, and the negative pressure airflow is sucked out through the powder suction pipe, and finally collected in the powder collecting cavity. This design solves the problem of easy accumulation and blockage of waste powder in the cavity, and eliminates the secondary pollution caused by powder leakage and flying.

[0019] 3、The steel wire surface lubricating powder removing device realizes the rotation of the rotating cylinder by designing two driving modes: the first is the active wind-driven driving realized by the fan blowing driving blade, and the rotation speed is stable and controllable; the second is the inclined friction between the friction wheel and the steel wire, which converts the passive linear motion of the steel wire into the rotation torque of the rotating cylinder. The two driving modes provide flexibility for the equipment to operate under different working conditions. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a three-dimensional structure schematic diagram of the present application; Figure 2 It is a fan structure schematic diagram of the present application; Figure 3 It is a support seat structure schematic diagram of the present application; Figure 4 It is a structure schematic diagram of the air-driven and negative pressure assembly of the present application; Figure 5 It is a rotating cylinder structure schematic diagram of the present application; Figure 6 It is a rotating cylinder cross section structure schematic diagram of the present application; Figure 7 It is a structure schematic diagram of the friction driving polishing assembly of the present application; Figure 8 It is a structure schematic diagram of the fixed bolt of the present application.

[0021] In the figure: 1, rotating cylinder; 2, support seat; 3, wind and negative pressure assembly; 4, friction drive polishing assembly; 5, cleaning brush; 101, cylinder body; 102, powder discharge port; 103, powder guide groove; 104, mounting groove; 105, sliding groove; 106, plug-in groove; 107, bolt hole; 201, base; 202, first support plate; 203, second support plate; 204, connecting groove; 205, limiting hole; 206, bearing; 207, powder collecting cavity; 301, fan; 302, wind power cavity; 303, exhaust pipe; 304, air inlet pipe; 305, powder suction pipe; 306, negative pressure pipe; 307, driving blade; 401, assembly base body; 402, sliding block; 403, elastic piece; 404, fixed bolt; 405, connecting frame; 406, friction wheel; 407, limiting shaft sleeve; 408, transmission wheel; 409, drive shaft. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0023] Please refer to Figure 1 - Figure 8 A steel wire surface lubricating powder sweeping device, comprising a rotating cylinder 1, a support seat 2 is sleeved on the outer wall of the rotating cylinder 1, a wind and negative pressure assembly 3 is fixedly assembled on the outer wall of the support seat 2, a friction drive polishing assembly 4 is fixedly assembled on the inner wall of one end of the rotating cylinder 1, and a plurality of cleaning brushes 5 are fixedly assembled around the inner wall of the other end of the rotating cylinder 1.

[0024] In a preferred embodiment: the rotating cylinder 1 comprises a cylinder body 101, a powder guide groove 103 is formed in the inner wall of one end of the cylinder body 101, a plurality of powder discharge ports 102 are formed around the inner wall of the end portion of the powder guide groove 103 close to the center of the cylinder body 101, and a mounting groove 104 is formed around the outer wall of the end of the cylinder body 101 away from the powder guide groove 103. A sliding groove 105 and a plug-in groove 106 are formed in the inner wall of the mounting groove 104, and a bolt hole 107 corresponding in position to the plug-in groove 106 is formed in the outer wall of the cylinder body 101.

[0025] In a preferred embodiment: A threaded guide groove is formed in the inside of the powder guide groove 103. A plurality of friction drive polishing assemblies 4 are fixedly assembled with the inner wall of the mounting groove 104, and a plurality of cleaning brushes 5 are fixedly assembled with the inner wall of the powder guide groove 103.

[0026] In the above structure, by arranging the cleaning brushes 5, the end of the cleaning brush 5 can cover the steel wire after the steel wire penetrates through the rotating cylinder 1, and by moving the steel wire, the cleaning brushes 5 can sweep the lubricating powder on the surface of the steel wire, thereby achieving the cleaning work. By opening the powder guide groove 103, the lubricating powder can be guided to the powder discharge port 102 through the powder guide groove 103 and discharged from the powder discharge port 102, and a threaded guide groove is arranged in the powder guide groove 103; in the rotating state of the rotating cylinder 1, the lubricating powder can be further guided through the threaded guide groove and discharged from the powder discharge port 102. It should be noted that the opening direction of the threaded guide groove is consistent with the rotating direction of the rotating cylinder 1.

[0027] In a preferred embodiment, the support seat 2 includes a base 201, and the first support plate 202 and the second support plate 203 are fixedly assembled on both sides of the base 201, respectively; a connecting groove 204 is arranged on the bottom outer wall of the first support plate 202, a limiting hole 205 is arranged on the top of the second support plate 203, a bearing 206 is sleeved on the inner wall of the top of the first support plate 202, and a powder collecting cavity 207 is sleeved in the inner cavity of the base 201. The inner wall of the bearing 206 is fixedly sleeved with the outer wall of the cylinder body 101.

[0028] In the above structure, by sleeving the inner wall of the bearing 206 with the outer wall of the cylinder body 101, the first support plate 202 and the bearing 206 are sleeved, the support seat 2 supports the rotating cylinder 1, the limiting hole 205 is arranged, the rotating cylinder 1 is sleeved with the inner wall of the limiting hole 205, and the outer wall of the limiting hole 205 is supported by the friction drive polishing assembly 4, thereby limiting the rotating cylinder 1 in the axial direction of the inner wall of the limiting hole 205. The first support plate 202 and the bearing 206 can be reasonably increased according to the length and mass of the rotating cylinder 1.

[0029] In a preferred embodiment, the air-driven and negative pressure assembly 3 includes a fan 301, an air inlet pipe 304 fixedly assembled with the outer wall of the first support plate 202 is connected to the outlet of the fan 301, an air power cavity 302 is communicated at the end of the air inlet pipe 304, an air outlet pipe 303 is communicated at the outer side of the air power cavity 302, and the end of the air outlet pipe 303 is communicated with the inner cavity of the base 201.

[0030] In a preferred embodiment, the air-driven and negative pressure assembly 3 further includes a powder suction pipe 305 corresponding to the position of the powder discharge port 102, and a negative pressure pipe 306 communicated with the air outlet pipe 303 is communicated at the bottom of the powder suction pipe 305. The wind power and negative pressure assembly 3 further comprises a plurality of driving blades 307 fixedly assembled around the outer wall of the cylinder body 101 and located on the inner wall of the wind power cavity 302.

[0031] In the above structure, the air inlet of the fan 301 is in communication with the outside, and when the fan 301 is running, the fan 301 transmits wind power to the inner cavity of the wind power cavity 302 through the air inlet pipe 304. The driving blades 307 are fixedly assembled with the outer wall of the cylinder body 101, and the wind power drives the driving blades 307 to rotate, thereby realizing the rotation of the rotating cylinder 1. The wind power in the inner cavity of the wind power cavity 302 is discharged through the exhaust pipe 303. The negative pressure pipe 306 and the powder suction pipe 305 are in communication with the exhaust pipe 303. The powder suction pipe 305 is in communication with the inner cavity of the cylinder body 101 through the powder discharge port 102. Through the siphon effect of the wind power, the lubricating powder at the powder guide groove 103 and the powder discharge port 102 is transmitted by the negative pressure of the wind power discharged through the exhaust pipe 303, and is transmitted to the inner cavity of the powder collecting cavity 207 through the exhaust pipe 303 to realize storage. The driving blades 307 are driven by the wind power to rotate the rotating cylinder 1, so that the rotating cylinder 1 drives the friction-driven polishing assembly 4 to polish the steel wire.

[0032] In a preferred embodiment, the friction-driven polishing assembly 4 comprises an assembly base body 401, a sliding block 402 fixedly assembled on the outer wall of the assembly base body 401, an elastic member 403 clamped on the inner wall of the assembly base body 401, a fixed bolt 404 clamped on the top inner wall of the elastic member 403, a connecting frame 405 fixedly assembled on the top of the assembly base body 401, a friction wheel 406 rotatably connected to the outer wall of one side of the assembly base body 401 close to the connecting frame 405, a limiting shaft sleeve 407 sleeved on the shaft head of the side of the friction wheel 406 away from the assembly base body 401, a transmission wheel 408 rotatably connected to the top of the limiting shaft sleeve 407, and a drive shaft 409 rotatably connected to the end inner wall of the connecting frame 405 and fixedly assembled on the top of the transmission wheel 408. The rotation axis of the friction wheel 406 and the advancing direction of the steel wire form a preset angle, and the preset angle is 15°-45°.

[0033] In a preferred embodiment, the assembly base body 401 is slidably sleeved with the inner wall of the sliding groove 105 through the sliding block 402, the end of the fixed bolt 404 is inserted into the inner wall of the insertion groove 106, and a bolt is arranged in the bolt hole 107 to fix the fixed bolt 404.

[0034] In the structure, the assembly base 401 is sleeved with the sliding block 402 and the sliding groove 105, one end of the elastic member 403 is fixedly assembled at the insertion groove 106 by the fixed insertion pin 404, the elastic member 403 is used to push the friction wheel 406 to move to the axis of the rotating cylinder 1 by the elastic force, so that the friction between the friction wheel 406 and the steel wire surface is ensured, the steel wire moves in the interior of the rotating cylinder 1, the rotation of the friction wheel 406 is realized by the friction between the friction wheel 406 and the steel wire, and the friction of the friction wheel 406 to the steel wire is realized, so that the polishing is realized. On the other hand, since the rotation axis of the friction wheel 406 is at an angle with the advancing direction of the steel wire, when the steel wire moves at a high speed, a tangential component force is generated on the surface of the friction wheel 406, the component force is transmitted to the rotating cylinder 1 through the assembly base 401, so that the torque for driving the rotating cylinder 1 to rotate is formed, the surrounding polishing of the steel wire surface by the friction wheel 406 and the flow guiding and discharging of the lubricating powder by the powder guiding groove 103 in the rotating state of the rotating cylinder 1 are realized. On the other hand, the power transmission is realized through the outer wall of the transmission wheel 408 and the outer wall of the friction wheel 406, so that the transmission wheel 408 drives the driving shaft 409 to rotate, and the end outer wall of the driving shaft 409 abuts against the outer wall at the outer edge of the limiting hole 205, so that the rotation of the driving shaft 409 is realized, and the rotation of the rotating cylinder 1 is realized.

[0035] That is, when the fan 301 does not operate, the equipment can realize the rotation of the friction driving polishing assembly 4, so that the surrounding polishing of the steel wire surface by the friction wheel 406 and the flow guiding and discharging of the lubricating powder by the powder guiding groove 103 in the rotating state of the rotating cylinder 1 are realized. It should be noted that the power transmission between the friction wheel 406 and the transmission wheel 408 can be realized by friction, gear or other existing technologies.

[0036] The outer wall of the driving shaft 409 is sleeved and fixed with the bearing 206, and the driving shaft 409 abuts against the outer wall of the limiting hole 205 through the bearing 206; It should be noted that the air driving and negative pressure assembly 3 and the friction driving polishing assembly 4 cannot operate at the same time, when the air driving and negative pressure assembly 3 drives the rotating cylinder 1 to rotate, the external bearing 206 is sleeved with the driving shaft 409, the driving shaft 409 and the outer wall of the limiting hole 205 are connected through the bearing 206, so that the friction between the driving shaft 409 and the limiting hole 205 is reduced; When the air driving and negative pressure assembly 3 does not operate, the rotating cylinder 1 can be directly driven to rotate by the friction driving polishing assembly 4; It should be noted that the outer wall of the drive shaft 409 can also be threadedly connected with a hexagonal nut, and the hexagonal nut is in abutment with the outer wall of the limiting hole 205, thereby limiting the drive shaft 409, and the rotation of the limiting friction wheel 406 is limited by the transmission wheel 408, so that the friction wheel 406 cannot realize rotation, thereby realizing the surrounding polishing of the steel wire surface by the friction wheel 406.

[0037] It should be noted that in this document, the terms "first" and "second" and the like are used merely to distinguish one entity or action from another, without necessarily requiring or implying any such actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0038] Although embodiments of the present application have been shown and described, it is to be understood that various modifications, substitutions, replacements and changes can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A wire surface lubricant powder sweeping device comprising a rotating drum (1), characterized in that: The outer wall of the rotating cylinder (1) is sleeved with a supporting seat (2), the outer wall of the supporting seat (2) is fixedly provided with a wind and negative pressure assembly (3), one end of the rotating cylinder (1) is fixedly provided with a friction driving polishing assembly (4), and the other end of the rotating cylinder (1) is fixedly provided with a plurality of cleaning brushes (5).

2. A steel wire surface lubricating powder sweeping device according to claim 1, characterized in that: The rotating cylinder (1) comprises a cylinder body (101), the inner wall of one end of the cylinder body (101) is provided with a powder guide groove (103), a plurality of powder discharge ports (102) are arranged on the inner wall of the end portion near the center of the cylinder body (101), and the outer wall of one end of the cylinder body (101) away from the powder guide groove (103) is provided with a mounting groove (104). The inner wall of the mounting groove (104) is provided with a sliding groove (105) and a plug-in groove (106), and the outer wall of the cylinder body (101) is provided with a bolt hole (107) corresponding to the position of the plug-in groove (106).

3. The steel wire surface lubricating powder sweeping device according to claim 2, characterized in that: The inner part of the powder guide groove (103) is provided with a threaded guide groove; A plurality of friction driving polishing assemblies (4) are fixedly arranged on the inner wall of the mounting groove (104), and a plurality of cleaning brushes (5) are fixedly arranged on the inner wall of the powder guide groove (103).

4. A steel wire surface lubricating powder removal device according to claim 1, characterized in that: The supporting seat (2) comprises a base (201), the two sides of the base (201) are fixedly provided with a first supporting plate (202) and a second supporting plate (203), the outer wall of the bottom of the first supporting plate (202) is provided with a connecting groove (204), the top of the second supporting plate (203) is provided with a limiting hole (205), the inner wall of the top of the first supporting plate (202) is sleeved with a bearing (206), and the inner cavity of the base (201) is sleeved with a powder collecting cavity (207). The inner wall of the bearing (206) is sleeved and fixed with the outer wall of the cylinder body (101).

5. A steel wire surface lubricating powder removal device according to claim 1, characterized in that: The wind and negative pressure assembly (3) comprises a fan (301), the exhaust port of the fan (301) is connected with an air inlet pipe (304) fixedly arranged on the outer wall of the first supporting plate (202), the end portion of the air inlet pipe (304) is communicated with a wind power cavity (302), the outer side of the wind power cavity (302) is communicated with an air outlet pipe (303), and the end portion of the air outlet pipe (303) is communicated with the inner cavity of the base (201).

6. A steel wire surface lubricating powder sweeping device according to claim 5, characterized in that: The wind and negative pressure assembly (3) further comprises a powder suction pipe (305) corresponding to the position of the powder discharge port (102), and the bottom of the powder suction pipe (305) is communicated with a negative pressure pipe (306) communicated with the air outlet pipe (303). The wind and negative pressure assembly (3) further comprises a plurality of driving blades (307) arranged around the outer wall of the cylinder body (101) and fixedly arranged on the outer wall of the cylinder body (101), and the plurality of driving blades (307) are arranged on the inner wall of the wind power cavity (302).

7. A steel wire surface lubricating powder removal device according to claim 6, characterized in that: The friction drive polishing assembly (4) comprises an assembly base body (401), the outer wall of the assembly base body (401) is fixedly provided with a sliding block (402), the inner wall of the assembly base body (401) is clamped with an elastic member (403), the top inner wall of the elastic member (403) is clamped with a fixed bolt (404), the top of the assembly base body (401) is fixedly provided with a connecting frame (405), the outer wall of the side of the assembly base body (401) close to the connecting frame (405) is rotatably connected with a friction wheel (406), the shaft head of the side of the friction wheel (406) away from the assembly base body (401) is sleeved with a limiting shaft sleeve (407), the top of the limiting shaft sleeve (407) is rotatably connected with a transmission wheel (408), the top of the transmission wheel (408) is fixedly provided with a driving shaft (409) rotatably connected with the end inner wall of the connecting frame (405). The rotation axis of the friction wheel (406) and the running direction of the steel wire form a preset included angle, and the preset included angle is 15°-45°.

8. The steel wire surface lubricating powder sweeping device according to claim 7, characterized in that: The assembly base body (401) is slidably sleeved with the inner wall of the sliding groove (105) through the sliding block (402), the end of the fixed bolt (404) is inserted into the inner wall of the insertion groove (106), and the bolt hole (107) is provided with a bolt for fixing the fixed bolt (404).

9. A steel wire surface lubricating powder removal device according to claim 8, characterized in that: The outer wall of the driving shaft (409) is sleeved with a bearing (206), and the driving shaft (409) abuts against the outer wall of the limiting hole (205) through the bearing (206).

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