A production polishing device for nursing trays

Abstract

The present invention discloses a production and polishing device for a nursing tray, comprising an operating body, the operating body comprising a processing table, an abrasive box fixedly connected to the outer surface of the processing table, a sealing plate detachably mounted on the top of the abrasive box, a hydraulic telescopic rod connected to the outer surface of the sealing plate, and an abrasive flow assembly provided on the top of the processing table, wherein the abrasive flow assembly comprises an abrasive cylinder located on one side of the abrasive box, and the present invention relates to the technical field of nursing tray processing. This production and polishing device for a nursing tray can effectively solve the problem in the prior art that medical nursing trays are cut from high-quality raw material plates and then integrally formed by machine stamping, and there are a large number of burrs on the edges of the plates after cutting, so they need to be trimmed, curled and screened after stamping, and the main method of trimming is one-to-one polishing and grinding, and the processing efficiency is extremely low, and there are problems of uneven and incomplete trimming.

Description

Technical Field

[0001] The invention relates to the technical field of nursing tray processing, and in particular to a production polishing device for a nursing tray. Background Art

[0002] Medical care trays are commonly used in hospitals and other medical institutions. They are mainly used to hold medical care equipment and medicines. At present, ordinary medical trays are generally used to hold medical equipment or tools such as thermometers, test tubes, tweezers, scissors and disinfectant bottles.

[0003] Medical care trays are cut from high-quality raw material plates and then formed into one piece by machine stamping. There are a lot of burrs on the edges of the cut plates, so they need to be trimmed, curled and screened after stamping. The main method of trimming is one-to-one polishing, which results in uneven and incomplete trimming, and the processing efficiency is extremely low. Summary of the invention

[0004] Technical issues solved

[0005] In view of the above-mentioned shortcomings of the prior art, the present invention provides a production and polishing device for a nursing tray, which can effectively solve the problem in the prior art that the medical nursing tray is cut from high-quality raw material plates and then formed into one piece by machine stamping. There are a large number of burrs on the edges of the plates after cut, so they need to be trimmed, curled and screened after stamping. The main method of trimming is one-to-one polishing and grinding, and the processing efficiency is extremely low, and there are problems of uneven and incomplete trimming.

[0006] Technical Solution

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0008] The present invention provides a production polishing device for a nursing tray, comprising:

[0009] An operating body, the operating body comprising a processing table, an abrasive box is fixedly connected to the outer surface of the processing table, a sealing plate is detachably mounted on the top of the abrasive box, and a hydraulic telescopic rod connected to the outer surface of the sealing plate is arranged on the top of the processing table;

[0010] An abrasive flow assembly, the abrasive flow assembly comprising an abrasive cylinder located at one side of the abrasive box, the abrasive cylinder being fixedly connected to an electromagnetic propeller at a side away from the abrasive box, and the abrasive cylinder being fixedly connected to the inside of the abrasive box via a material guide pipe arranged at the outside thereof;

[0011] Wherein, a pressurizer is fixedly connected to the top of the sealing plate, and an inner support is fixedly connected to the bottom of the sealing plate for placing the nursing tray.

[0012] Furthermore, a filter plate is arranged in the space enclosed by the material guide pipe and the abrasive box, and a positioning groove is provided at the bottom of the inner wall of the abrasive box.

[0013] Furthermore, the inner support member includes a hard rod, the top end of the hard rod is fixedly connected to the bottom of the sealing plate, the end of the hard rod away from the sealing plate is fixedly connected to a reinforcing rib, the end face of the reinforcing rib is fixedly connected to a cross plate that fits the inner wall of the nursing tray, and the cross plate is slidably connected to the inner support rod via a sliding rail opened on its outer surface.

[0014] Furthermore, the cross plate is fixedly connected to a bearing rod on the side away from the nursing tray, and the bearing rod is fixedly connected to a coupling plate connected to the outer surface of the hard rod at one end away from the cross plate. The circumferential outer surface of the bearing rod is rotatably connected to a tooth plate, an arc-shaped hole is provided inside the tooth plate, and the outer surface of the inner support rod is fixedly connected to a pin rod slidably connected to the inner wall of the arc-shaped hole, and a torsion spring is arranged in the space enclosed by the tooth plate and the coupling plate, and the torsion spring is sleeved on the circumferential outer surface of the bearing rod.

[0015] Furthermore, the combining plate is fixedly connected to the bearing plate via a connecting plate arranged on its outer surface, and an adjusting rod which is rotatably connected inside the bearing plate and meshes with the outer circumferential surface of the tooth plate is provided.

[0016] Furthermore, the connecting plate is slidably connected to a square rod via an external connecting plate arranged on its outer surface; the square rod is fixedly connected to a tooth block meshing with the circumferential outer surface of the tooth plate at one end away from the external connecting plate; a strong spring is arranged in the cavity surrounded by the tooth block and the external connecting plate; the strong spring is sleeved on the outer surface of the square rod.

[0017] Furthermore, the outer surface of the hard rod is tightly fitted with the inner wall of the positioning groove, the lower surface of the sealing plate is fixedly connected with a sealing ring, and the end surface of the inner support rod is fixedly connected with an inner support block that fits with the inner wall of the nursing tray.

[0018] Beneficial Effects

[0019] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects:

[0020] The present invention is provided with an abrasive flow component and an inner support member. When the square rod is manually pulled downward to drive the tooth block to separate from the tooth plate, the tooth plate rotates rapidly clockwise due to the torsion force of the torsion spring, and the inner wall of the arc hole pushes the pin rod, driving the inner support rod to slide rapidly outward along the slide rail of the cross plate. When the first group of inner support rods drives the inner support block to contact the inner wall of the nursing tray (synchronously horizontally and vertically), it will drive the nursing tray to a short position until the second group of inner support rods is also completely attached to the inner wall of the nursing tray. At this time, not only the rapid position correction of the nursing tray is achieved, but also the synchronous internal support fixation of the nursing tray is achieved. Start the hydraulic telescopic rod to drive the sealing plate, inner support and nursing tray to move downward synchronously, and the hard rod slides into the positioning groove to offset the resistance of the abrasive flow until the sealing plate is completely combined with the top of the abrasive box. Then start the electromagnetic propeller on the abrasive flow assembly, and use the piston to squeeze the abrasive in the abrasive cylinder to flow in the abrasive box. When the abrasive passes through the edge of the nursing tray plate, it produces a grinding effect to remove burrs. At the same time, there are two groups of abrasive flow assemblies, and bidirectional abrasive flow cyclic extrusion and grinding are highly efficient and uniform in grinding effect, so as to realize one-time batch polishing and grinding of nursing trays. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 It is a three-dimensional structural schematic diagram of an embodiment of the present invention;

[0023] Figure 2 It is a schematic structural diagram of the three-dimensional separation of the processing table, the abrasive box, the sealing plate and the material guide pipe in an embodiment of the present invention;

[0024] Figure 3 This is a schematic structural diagram of an inner support member and a nursing tray in a front view according to an embodiment of the present invention;

[0025] Figure 4 This is a schematic structural diagram of the three-dimensional combination of the inner support member and the nursing tray according to an embodiment of the present invention;

[0026] Figure 5 This is a schematic diagram of the structure of the three-dimensional combination of the inner support member and the nursing tray in an embodiment of the present invention at multiple angles;

[0027] Figure 6 For the embodiment of the present invention Figure 5 A schematic diagram of the structure with a partial enlargement at the center;

[0028] Figure 7This is a three-dimensional structural diagram of an inner support member according to an embodiment of the present invention;

[0029] Figure 8 It is a schematic structural diagram of a three-dimensional partial separation of an inner support member in an embodiment of the present invention.

[0030] The numbers in the figure represent: 1. operating body; 11. processing table; 12. abrasive box; 121. positioning groove; 13. sealing plate; 131. sealing ring; 14. hydraulic telescopic rod; 15. pressurizer; 2. abrasive flow assembly; 21. abrasive cylinder; 22. electromagnetic propeller; 23. material guide pipe; 24. filter plate; 3. internal support; 31. hard rod; 32. reinforcing rib; 33. cross plate; 34. internal support rod; 341. pin rod; 342. internal support block; 35. bearing rod; 36. combining plate; 361. connecting plate; 362. bearing plate; 363. adjusting rod; 364. external plate; 365. square rod; 366. tooth block; 367. strong spring; 37. tooth plate; 371. arc hole; 38. torsion spring. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] The present invention will be further described below in conjunction with the embodiments.

[0033] Example:

[0034] See also Figure 1-Figure 8 The present invention provides a technical solution: a production polishing device for a nursing tray, comprising:

[0035] The operating body 1 includes a processing table 11, an abrasive box 12 is fixedly connected to the outer surface of the processing table 11, a sealing plate 13 is detachably installed on the top of the abrasive box 12, and a hydraulic telescopic rod 14 connected to the outer surface of the sealing plate 13 is arranged on the top of the processing table 11;

[0036] The abrasive flow assembly 2 includes an abrasive cylinder 21 located at one side of the abrasive box 12. The abrasive cylinder 21 is fixedly connected to an electromagnetic propeller 22 at a side away from the abrasive box 12. The abrasive cylinder 21 is fixedly connected to the inside of the abrasive box 12 through a guide pipe 23 arranged at the outside thereof.

[0037] Among them, a pressurizer 15 is fixedly connected to the top of the sealing plate 13, and the pressurizer 15 is preferentially an electric push rod (the stroke direction of the electric push rod can be controlled by an encoder, and then the stop position is set together with the controller; the encoder: accurately feeds back the number of rotations of the motor spindle through the number of pulses, thereby accurately calculating the stroke change of the electric push rod and realizing precise control), and an inner support part 3 is fixedly connected to the bottom of the sealing plate 13 for placing the nursing tray.

[0038] A filter plate 24 is arranged in the space enclosed by the material guide pipe 23 and the abrasive box 12 to filter metal impurities in the abrasive. A positioning groove 121 is provided at the bottom of the inner wall of the abrasive box 12 .

[0039] The inner support member 3 includes a hard rod 31, the top of which is fixedly connected to the bottom of the sealing plate 13, and the end of the hard rod 31 away from the sealing plate 13 is fixedly connected to a reinforcing rib 32, and the end face of the reinforcing rib 32 is fixedly connected to a cross plate 33 that fits the inner wall of the nursing tray, and the cross plate 33 is slidably connected to the inner support rod 34 through a slide rail opened on its outer surface.

[0040] A bearing rod 35 is fixedly connected to the side of the cross plate 33 away from the nursing tray, and a coupling plate 36 connected to the outer surface of the hard rod 31 is fixedly connected to the end of the bearing rod 35 away from the cross plate 33. A tooth plate 37 is rotatably connected to the circumferential outer surface of the bearing rod 35, and an arc hole 371 is opened inside the tooth plate 37. A pin rod 341 that is slidably connected to the inner wall of the arc hole 371 is fixedly connected to the outer surface of the inner support rod 34. A torsion spring 38 is arranged in the space enclosed by the tooth plate 37 and the coupling plate 36, and the torsion spring 38 is sleeved on the circumferential outer surface of the bearing rod 35.

[0041] The coupling plate 36 is fixedly connected to a bearing plate 362 via a connecting plate 361 arranged on the outer surface thereof, and an adjusting rod 363 is rotatably connected inside the bearing plate 362 and meshes with the outer circumferential surface of the tooth plate 37 .

[0042] The connecting plate 361 is slidably connected to a square rod 365 via an external plate 364 arranged on its outer surface. The square rod 365 is fixedly connected to a tooth block 366 meshing with the circumferential outer surface of the tooth plate 37 at one end away from the external plate 364, which is used to limit the rotation of the tooth plate 37. A strong spring 367 is arranged in the cavity surrounded by the tooth block 366 and the external plate 364, and the strong spring 367 is sleeved on the outer surface of the square rod 365.

[0043] The outer surface of the hard rod 31 fits tightly with the inner wall of the positioning groove 121, and the lower surface of the sealing plate 13 is fixedly connected with a sealing ring 131, which is sealed to prevent the abrasive from flowing out. The end face of the inner support rod 34 is fixedly connected with an inner support block 342 that fits with the inner wall of the nursing tray. There are four groups of inner support blocks 342 in total. The four groups of inner support blocks 342 form a quadrilateral that is proportional to a certain value of the quadrilateral formed by the inner wall of the nursing tray. The spacing between the corresponding inner support blocks 342 on all sides of the calibrated nursing tray remains consistent; the contact area of ​​the inner support block 342 is also tilted to increase the contact area.

[0044] refer to Figure 1-8 Medical care trays are cut from high-quality raw material plates and then formed into one piece by machine stamping. There are a lot of burrs on the edges of the cut plates, so they need to be trimmed, curled and screened after stamping. The main method of trimming is one-to-one polishing, which results in uneven and incomplete trimming, and the processing efficiency is extremely low;

[0045] In order to overcome the above-mentioned defects, the present invention designs a production grinding device for a nursing tray, which mainly adopts an abrasive flow processing method, in which an abrasive medium (a flowable mixture mixed with abrasive particles) flows under pressure over the surface of the workpiece to be processed to remove burrs, flash, and round corners to reduce the waviness and roughness of the workpiece surface, achieve the smoothness of precision processing, improve processing efficiency and accuracy, and eliminate the generation of dust.

[0046] Loading of the nursing tray:

[0047] The hydraulic telescopic rod 14 on the operating body 1 is started to drive the sealing plate 13 away from the top of the abrasive box 12, and at the same time, the sealing plate 13 synchronously drives the inner support member 3 to move upward to reach the height required by the staff. Then the staff stacks the nursing trays one by one (about 15 layers, and the openings of the nursing trays face downward). There are four groups of hard rods 31 of the inner support 3. The spacing between adjacent hard rods 31 is much larger than the width of the nursing tray. The stacked nursing trays can be placed horizontally on the cross plate 33 from one side. Since the cross plate 33, reinforcing ribs 32, hard rods 31, bearing rods 35 and connecting plates 36 are fixedly connected, the stacked nursing trays can be stably placed on the upper surface of the cross plate 33. The pressurizer 15 is then controlled by the PLC. The pressurizer 15 gives priority to the electric push rod (the stroke direction of the electric push rod can be controlled by the encoder, and then the stop direction is set together with the manipulator; encoder: accurately feeds back the number of revolutions of the motor spindle through the number of pulses, thereby accurately calculating the stroke change of the electric push rod and realizing precise control), and cooperates with the lower pressure plate at the lower end of the electric push rod to preliminarily fix the upper surface of the stacked nursing trays (to prevent tipping over when the inner support nursing tray is in place).

[0048] Automatic correction and fixation of the nursing tray:

[0049] Before the nursing tray is loaded, the torsion value of the torsion spring 38 on the inner support member 3 is at the maximum value, and the adjustment method is: first, manually pull down the square rod 365 to slide along the inside of the external plate 364 (the strong spring 367 is further elastically compressed), driving the tooth block 366 to disengage from the tooth plate 37 (releasing the limit on the tooth plate 37), and then manually rotate the adjustment rod 363 clockwise to engage the transmission tooth plate 37 and rotate counterclockwise (the torsion value of the torsion spring 38 gradually increases), and the inner wall of the arc hole 371 pulls back the pin rod 3 41 (the inner support rod 34 slides inwardly along the slide rail of the cross plate 33) until the pin rod 341 stays at the innermost side of the inner wall of the arc hole 371 (the torque value of the torsion spring 38 is the largest). At this time, the expansion range of the four groups of inner support rods 34 is the smallest, which is convenient for the rapid placement of nursing trays of different sizes within a certain range. Then, the square rod 365 is loosened first, and the elastic force of the strong spring 367 drives the tooth block 366 to engage the tooth plate 37 again to prevent the tooth plate 37 from rotating and resetting, and then the adjusting rod 363 is loosened.

[0050] Since the lower pressure plate at the lower end of the pressurizer 15 has preliminarily fixed the upper surface of the stacked nursing trays, the loaded nursing trays are not completely symmetrically distributed on the cross plate 33. At this time, it is only necessary to manually pull down the square rod 365 to drive the tooth block 366 to disengage from the tooth plate 37. At the moment, the tooth plate 37 is subjected to the torsion force of the torsion spring 38 and rotates rapidly clockwise. The inner wall of the arc hole 371 pushes the pin rod 341, driving the inner support rod 34 to slide rapidly outward along the slide rail of the cross plate 33 (the four inner support rods 34 are synchronously expanded outward). When the first group of inner support rods 34 drives the inner support block 342 to contact the inner wall of the nursing tray (synchronously horizontally and vertically), it will drive the nursing tray to a short position until the second group of inner support rods 34 is also completely attached to the inner wall of the nursing tray. At this time, not only the rapid position correction of the nursing tray is achieved, but also the synchronous internal support fixation of the nursing tray is achieved. Since the inner walls around the nursing tray are designed to be inclined, when the inner support block 342 is pushed (the contact area of ​​the inner support block 342 is also designed to be inclined to increase the contact area), a vertical upward component force will be generated, driving the stacked nursing trays to move upward, and the lower pressure plate at the lower end of the pressurizer 15 will be more tightly combined with the upper surface of the stacked nursing trays. Then, the pressurizer 15 is controlled by PLC, and pressure is further applied to the upper surface of the stacked nursing trays with the help of the lower pressure plate at the lower end, so that the inner wall of the nursing tray is tightly fitted on the inclined surface of the inner support block 342 (the position of the inner support rod 34 in the slide rail of the cross plate 33 changes slightly), and at this time the outer surface of the cross plate 33 is completely fitted on the inner wall of the nursing tray, and the stacked nursing trays, the pressurizer 15 and the inner support member 3 are combined into a whole (mainly fixed in three aspects: first, the pressurizer 15 is fixed at the top by the lower pressure plate; second, the outer surface of the cross plate 33 is completely fitted on the inner wall of the nursing tray for bottom fixation; third, the four groups of inner support blocks 342 are tightly fitted on the annular inner wall of the nursing tray for fixing on all sides), and finally the square rod 365 is released to reset and the tooth plate 37 is locked by the tooth block 366.

[0051] Design advantages of inner support 3:

[0052] Advantage 1: the inner support members 3 are designed with multiple groups, and each group of inner support members 3 can be loaded with several groups of nursing trays, thereby realizing one-time batch polishing and grinding of the nursing trays with high efficiency and high precision.

[0053] The second advantage is that the operation is simple. You only need to place the stacked nursing trays on the cross plate 33, cooperate with the pressurizer 15, and then pull the square rod 365 downward. Using the torsion spring 38, tooth plate 37, cross plate 33, inner support rod 34 and inner support block 342, the nursing trays can be automatically calibrated and fixed (the two are carried out simultaneously).

[0054] Advantage three: the convenient stackable nursing trays can be quickly loaded and removed at one time.

[0055] Advantage four: the inner support member 3 can be used to load nursing trays of different sizes within a certain range, has strong versatility, and can simultaneously polish and grind nursing trays of different sizes at one time (nursing trays of different sizes are scaled in equal proportions).

[0056] Advantage five, the nursing trays are stacked one by one, and the openings of the nursing trays face downward. After polishing and grinding are completed, the inner support 3 drives the nursing trays to move upward and be taken out, which facilitates the rapid flow of abrasives between the nursing trays (the loading openings of the nursing trays on the inner support 3 face downward).

[0057] Polishing of nursing tray:

[0058] After the inner support 3 is loaded with the nursing tray, the hydraulic telescopic rod 14 is started to drive the sealing plate 13, the inner support 3 and the nursing tray to move downward synchronously, and the hard rod 31 slides into the positioning groove 121 (used to offset the resistance of the abrasive flow and protect the hard rod 31) until the sealing plate 13 is completely combined with the top of the abrasive box 12 (the sealing ring 131 at the junction of the two is closed to prevent the abrasive from flowing out), and then the electromagnetic propeller 22 on the abrasive flow assembly 2 is started, and the abrasive in the abrasive cylinder 21 is squeezed by the piston to flow in the abrasive box 12 (the abrasive box 12 is originally filled with some abrasive). When the abrasive passes through the edge of the nursing tray plate, a grinding effect is generated to remove burrs. At the same time, the abrasive flow assembly 2 is provided with two groups, and the bidirectional abrasive flow circulates to squeeze and grind, which is efficient and has a uniform grinding effect, avoiding the problem that some burrs roll outward and cannot be cleaned.

[0059] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A production polishing device for a nursing tray, characterized in that: include: An operating body (1), the operating body (1) comprising a processing table (11), an outer surface of the processing table (11) being fixedly connected to an abrasive box (12), a sealing plate (13) being detachably mounted on the top of the abrasive box (12), and a hydraulic telescopic rod (14) connected to the outer surface of the sealing plate (13) being arranged on the top of the processing table (11); An abrasive flow assembly (2), the abrasive flow assembly (2) comprising an abrasive cylinder (21) located on one side of the abrasive box (12), the side of the abrasive cylinder (21) away from the abrasive box (12) being fixedly connected to an electromagnetic propeller (22), the abrasive cylinder (21) being fixedly connected to the inside of the abrasive box (12) via a material guide pipe (23) arranged on the outside thereof; The top of the sealing plate (13) is fixedly connected to a pressurizer (15), and the bottom of the sealing plate (13) is fixedly connected to an inner support member (3) for placing a nursing tray; The inner support member (3) comprises a hard rod (31), the top end of the hard rod (31) is fixedly connected to the bottom of the sealing plate (13), one end of the hard rod (31) away from the sealing plate (13) is fixedly connected to a reinforcing rib (32), the end surface of the reinforcing rib (32) is fixedly connected to a cross plate (33) that fits the inner wall of the nursing tray, and the cross plate (33) is slidably connected to the inner support rod (34) via a slide rail provided on its outer surface; The cross plate (33) is fixedly connected to a bearing rod (35) at one side away from the nursing tray, and the bearing rod (35) is fixedly connected to a coupling plate (36) connected to the outer surface of the hard rod (31) at one end away from the cross plate (33). The outer surface of the bearing rod (35) is rotatably connected to a tooth plate (37), and an arc-shaped hole (371) is provided inside the tooth plate (37). The outer surface of the inner support rod (34) is fixedly connected to a pin rod (341) slidably connected to the inner wall of the arc-shaped hole (371). A torsion spring (38) is provided in the space enclosed by the tooth plate (37) and the coupling plate (36), and the torsion spring (38) is sleeved on the outer surface of the bearing rod (35). The combining plate (36) is fixedly connected to a bearing plate (362) via a connecting plate (361) arranged on its outer surface, and an adjusting rod (363) is rotatably connected inside the bearing plate (362) and meshes with the circumferential outer surface of the tooth plate (37); The connecting plate (361) is slidably connected to a square rod (365) via an external connecting plate (364) arranged on its outer surface; one end of the square rod (365) away from the external connecting plate (364) is fixedly connected to a tooth block (366) meshing with the circumferential outer surface of the tooth plate (37); a strong spring (367) is arranged in a cavity surrounded by the tooth block (366) and the external connecting plate (364); the strong spring (367) is sleeved on the outer surface of the square rod (365); The outer surface of the hard rod (31) is tightly fitted with the inner wall of the positioning groove (121); the lower surface of the sealing plate (13) is fixedly connected with a sealing ring (131); and the end surface of the inner support rod (34) is fixedly connected with an inner support block (342) that is fitted with the inner wall of the nursing tray.

2. A production polishing device for a nursing tray according to claim 1, characterized in that: A filter plate (24) is arranged in the space enclosed by the material guide pipe (23) and the abrasive box (12), and a positioning groove (121) is provided at the bottom of the inner wall of the abrasive box (12).

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