A modified plastic and masterbatch production and packaging equipment

Abstract

The present invention discloses a modified plastic and masterbatch production packaging device, including: a bottom plate, a first conveyor belt is arranged on the front side of the top end of the bottom plate, a workbench is arranged behind the first conveyor belt, side plates are symmetrically arranged on the top end of the workbench, an adjusting component is arranged on the top end of the workbench, the adjusting component includes a motor, a motor is fixedly connected to the outer side wall of the right group of side plates, the motor is located in the middle position of the outer side wall of the side plate, the output shaft of the motor is fixedly connected to a lead screw, the bottom end of the lead screw is rotatably installed on the top of the right side of the workbench, a first moving block is threadedly connected to the lead screw, a first connecting rod is fixedly connected to the left side of the first moving block. By setting the control component, etc., the bag mouths of packaging bags with different diameters can be clamped and squeezed for fixation, to a certain extent, avoiding the inclination of the packaging bags due to the lack of support at the bag mouths of the packaging bags when loading masterbatch, and improving the work efficiency.

Description

Technical Field

[0001] The present invention belongs to the technical field of modified plastics and masterbatches, and particularly relates to a production and packaging device for modified plastics and masterbatches. Background Art

[0002] Modified plastics refer to plastic products that are processed by methods such as filling, blending, and reinforcement based on general plastics and engineering plastics, and have improved performance in aspects such as flame retardancy, strength, impact resistance, and toughness.

[0003] Most of the existing production and packaging devices for modified plastics and masterbatches only fix packaging bags of a single size, and do not have the ability to fix and load packaging bags of different sizes. During the loading process, due to the relatively soft material of some packaging bags, only the bag mouth is clamped for loading, and the bag mouth is subjected to a large force, which easily causes the bag mouth to be damaged. Summary of the Invention

[0004] In view of the problem that most of the existing production and packaging devices for modified plastics and masterbatches only fix packaging bags of a single size, do not have the ability to fix and load packaging bags of different sizes, and during the loading process, due to the relatively soft material of some packaging bags, only the bag mouth is clamped for loading, and the bag mouth is subjected to a large force, which easily causes the bag mouth to be damaged, the present invention proposes the following technical solutions:

[0005] A production and packaging device for modified plastics and masterbatches, comprising: a bottom plate, a first conveyor belt is arranged on the front side of the top end of the bottom plate, a workbench is arranged behind the first conveyor belt, side plates are symmetrically arranged on the top end of the workbench, an adjusting component is arranged on the top end of the workbench, the adjusting component includes a motor, a motor is fixedly connected to the outer side wall of the right group of side plates, the motor is located in the middle position of the outer side wall of the side plate, the output shaft of the motor is fixedly connected to a lead screw, the bottom end of the lead screw is rotatably installed on the top of the right side of the workbench, a first moving block is threadedly connected to the lead screw, a first connecting rod is fixedly connected to the left side of the first moving block, second connecting rods are fixedly connected to the front end and the rear end of the first connecting rod, the left ends of the two second connecting rods are fixedly connected to an adjusting plate, a second conveyor belt is arranged at the middle position of the top end of the adjusting plate, first electric telescopic rods are fixedly connected to both sides of the top end of the adjusting plate, fixing blocks are fixedly connected to the top ends of the two first electric telescopic rods, and control components are arranged on the tops of the two fixing blocks.

[0006] Preferably, third connecting rods are fixedly connected to the front end and the rear end of the left side of the adjusting plate, a fourth connecting rod is fixedly connected to the left ends of the two third connecting rods, a second moving block is fixedly connected to the middle position of the left side of the fourth connecting rod, a sliding rod is vertically penetrated through the second moving block, the sliding rod is slidably connected to the second moving block, and the bottom end of the sliding rod is fixedly connected to the top end of the left side of the workbench.

[0007] Preferably, as the above technical solution, the control component includes a second electric telescopic rod. One side wall of the second electric telescopic rod is fixedly connected to the top of the fixed block. The telescopic end of the second electric telescopic rod is fixedly connected to a square block. Installation grooves are formed on the front side wall and the rear side wall of the square block. Cylinders are arranged in the two installation grooves. Support blocks are fixedly connected to the relatively far ends of the two cylinders away from each other.

[0008] Preferably, as the above technical solution, third electric telescopic rods are fixedly connected to the relatively close side walls of the two fixed blocks. Extrusion plates are fixedly connected to the telescopic ends of the two third electric telescopic rods. An extrusion groove is formed on the side wall of the square block close to the fixed block. The extrusion groove is adapted to the size of the extrusion plate.

[0009] Preferably, as the above technical solution, connecting blocks are fixedly connected to the tops of the two side plates. A feeding funnel is fixedly connected between the two connecting blocks. A feeding pipe is arranged at the top of the feeding funnel, and a discharging pipe is arranged at the bottom end of the feeding funnel.

[0010] Preferably, as the above technical solution, a support plate is arranged between the two side plates. The support plate is located above the control component. A through groove is formed at the middle position of the top of the support plate. The discharging pipe penetrates through the through groove and extends below the support plate. A switching valve is fixedly connected to the end of the discharging pipe below the support plate.

[0011] Preferably, as the above technical solution, a sealing machine is arranged at the position close to the front end of the bottom of the support plate. The sealing machine is located above the front end of the top of the second conveyor belt.

[0012] Preferably, as the above technical solution, a slope is formed at the front end of the top of the workbench. Fixed plates are fixedly connected to both side walls of the slope. A plurality of groups of rollers are arranged between the two fixed plates. One end of the fixed plate close to the side plate is located at the front bottom end of the second conveyor belt, and the other end of the fixed plate is located above the first conveyor belt.

[0013] The beneficial effects of the present invention are as follows:

[0014] (1) A modified plastic and masterbatch production packaging device; the control component is provided. Through the telescoping of two groups of second electric telescopic rods, when the telescopic ends of the two groups of second electric telescopic rods are telescopically extended until the two square blocks fixedly connected to them are close to each other, place the bag mouth of the packaging bag outside the two square blocks and surround the bottom of the two square blocks. At this time, start two groups of third electric telescopic rods. When the pressing plate fixedly connected to the telescopic ends of the two groups of third electric telescopic rods is close to the pressing groove opened on one side wall of the square block close to the fixed block, the bag mouth of the packaging bag is squeezed and fixed. At this time, start the contraction of the two groups of second electric telescopic rods and the two groups of third electric telescopic rods at the same time, and pull the bag mouth of the packaging bag to both sides. At this time, start the air cylinders arranged in the installation grooves opened on the front side wall and the rear side wall of the two square blocks. The air cylinders push the support blocks to support the bag mouth of the packaging bag front and back. When the size of the bag mouth of the packaging bag is opened larger than the diameter of the feed pipe, the second electric telescopic rods, the third electric telescopic rods and the air cylinders can be stopped, and start the telescoping of the two groups of first electric telescopic rods to make the bottom of the packaging bag fit with the second conveyor belt and the contact area is slightly larger than the size of the bag mouth of the packaging bag opened, so as to clamp, squeeze and fix the bag mouths of packaging bags with different diameters, and to a certain extent avoid the inclination of the packaging bag caused by the lack of support of the bag mouth of the packaging bag when loading masterbatch, thus improving the work efficiency.

[0015] (2) A modified plastic and masterbatch production packaging device. Through the adjustment component provided, start the motor, the lead screw drives the first moving block with a thread, the first moving block drives the first connecting rod, the first connecting rod drives the second connecting rod forward, the two second connecting rods drive the adjusting plate fixedly connected to the left end, the adjusting plate drives the third connecting rods fixedly connected to the front end and the rear end on the left side, the two third connecting rods drive the fourth connecting rod fixedly connected to the left end, and the fourth connecting rod drives the second moving block fixedly connected to the middle position on the left side to move up and down on the sliding rod. When it moves to the position where the discharge pipe is inside the bag mouth of the packaging bag, the motor can be stopped and the masterbatch can be loaded, so as to avoid the different distances between the discharge pipe and the bag mouth of the packaging bag due to the different sizes of the packaging bags. When the size of the packaging bag is small, the discharge pipe is far from the bag mouth of the packaging bag, and some masterbatch may fall outside the packaging bag. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The external structural perspective view in the embodiment is shown;

[0017] Figure 2 The front sectional view of the overall structure in the embodiment is shown;

[0018] Figure 3 The side sectional view of the overall structure in the embodiment is shown;

[0019] Figure 4 The structural schematic diagram of the control component in the embodiment is shown;

[0020] Figure 5The structural schematic diagram of the adjustment component in the embodiment is shown.

[0021] In the figure: 1, bottom plate; 2, workbench; 3, first conveyor belt; 4, side plate; 5, blanking funnel; 6, connecting block; 7, support plate; 8, sealing machine; 9, adjustment component; 901, motor; 902, lead screw; 903, first moving block; 904, first connecting rod; 905, second connecting rod; 906, adjustment plate; 907, third connecting rod; 908, fourth connecting rod; 909, second moving block; 910, slide bar; 10, second conveyor belt; 11, roller; 12, first electric telescopic rod; 13, control component; 1301, second electric telescopic rod; 1302, square block; 1303, installation groove; 1304, support block; 1305, extrusion groove; 1306, air cylinder; 14, third electric telescopic rod; 15, extrusion plate; 16, feed pipe; 17, discharge pipe; 18, fixing plate; 19, fixing block; 20, switch valve. Detailed implementation manners

[0022] To make the purposes, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0023] Embodiment

[0024] The present invention provides a modified plastic and color masterbatch production and packaging device, as Figures 1-5 shown, including a bottom plate 1. A first conveyor belt 3 is arranged on the front side of the top end of the bottom plate 1. A workbench 2 is arranged behind the first conveyor belt 3. Side plates 4 are symmetrically arranged on the top end of the workbench 2. An adjustment component 9 is arranged on the top end of the workbench 2. The adjustment component 9 includes a motor 901. The motor 901 is fixedly connected to the outer side wall of the right group of side plates 4. The motor 901 is located at the middle position of the outer side wall of the side plate 4. The output shaft of the motor 901 is fixedly connected to a lead screw 902. The bottom end of the lead screw 902 is rotatably installed on the top of the right side of the workbench 2. A first moving block 903 is threadedly connected to the lead screw 902. A first connecting rod 904 is fixedly connected to the left side of the first moving block 903. Second connecting rods 905 are fixedly connected to the front end and the rear end of the first connecting rod 904. The left ends of the two groups of second connecting rods 905 are fixedly connected to an adjustment plate 906. A second conveyor belt 10 is arranged at the middle position of the top end of the adjustment plate 906. First electric telescopic rods 12 are fixedly connected to both sides of the top end of the adjustment plate 906. The top ends of the two groups of first electric telescopic rods 12 are fixedly connected to fixing blocks 19. By arranging the two groups of first electric telescopic rods 12, it is possible to adjust when the bottom of the packaging bag contacts the second conveyor belt 10, avoiding that when loading materials, due to more and heavier materials loaded, the clamping force on the bag mouth is insufficient and the packaging bag drops. Control components 13 are arranged on the top of the two groups of fixing blocks 19.

[0025] Both the front end and the rear end of the left side of the adjusting plate 906 are fixedly connected with third connecting rods 907. The left ends of the two groups of third connecting rods 907 are fixedly connected with a fourth connecting rod 908. The middle position on the left side of the fourth connecting rod 908 is fixedly connected with a second moving block 909. A slide rod 910 is vertically arranged through the second moving block 909. The slide rod 910 is slidably connected with the second moving block 909. The bottom end of the slide rod 910 is fixedly connected to the top end of the left side of the workbench 2.

[0026] By means of the provided adjusting component 9, start the motor 901. The lead screw 902 drives the threaded first moving block 903. The first moving block 903 drives the first connecting rod 904. The first connecting rod 904 drives the second connecting rod 905 in front. The two groups of second connecting rods 905 drive the adjusting plate 906 fixedly connected to the left end. The adjusting plate 906 drives the third connecting rods 907 fixedly connected to the front end and the rear end of the left side. The two groups of third connecting rods 907 drive the fourth connecting rod 908 fixedly connected to the left end. The fourth connecting rod 908 drives the second moving block 909 fixedly connected to the middle position on the left side to move up and down on the slide rod 910. When the discharge pipe 17 is located inside the bag mouth of the packaging bag, the motor 901 can be stopped, and the color masterbatch can be loaded.

[0027] To avoid the distance between the discharge pipe 17 and the bag mouth of the packaging bag being different due to different sizes of the packaging bags. When the size of the packaging bag is small, the discharge pipe 17 is far from the bag mouth of the packaging bag, and some color masterbatch may fall outside the packaging bag.

[0028] As Figures 1-4 As shown, the control component 13 includes a second electric telescopic rod 1301. One side wall of the second electric telescopic rod 1301 is fixedly connected to the top of the fixed block 19. The telescopic end of the second electric telescopic rod 1301 is fixedly connected with a square block 1302. Installation grooves 1303 are opened on both the front side wall and the rear side wall of the square block 1302. Cylinders 1306 are arranged in the two groups of installation grooves 1303. The relatively far ends of the two groups of cylinders 1306 are fixedly connected with support blocks 1304.

[0029] On the relatively close side walls of the two groups of fixed blocks 19, third electric telescopic rods 14 are fixedly connected. The telescopic ends of the two groups of third electric telescopic rods 14 are fixedly connected with pressing plates 15. A pressing groove 1305 is opened on the side wall of the square block 1302 close to the fixed block 19. The pressing groove 1305 is adapted to the size of the pressing plate 15.

[0030] Through the provided control component 13, the two sets of second electric telescopic rods 1301 extend and retract. When the telescopic ends of the two sets of second electric telescopic rods 1301 are extended and fixed to the two square blocks 1302 that are close to each other, place the bag mouth of the packaging bag outside the two square blocks 1302 and surround the bottom of the two square blocks 1302. At this time, start the two sets of third electric telescopic rods 14. When the extrusion plate 15 fixedly connected to the telescopic ends of the two sets of third electric telescopic rods 14 presses against the extrusion groove 1305 opened on one side wall of the square block 1302 close to the fixed block 19, the bag mouth of the packaging bag is extruded and fixed. At this time, simultaneously start the two sets of second electric telescopic rods 1301 and the two sets of third electric telescopic rods 14 to contract, and pull the bag mouth of the packaging bag to both sides. At this time, start the air cylinders 1306 arranged in the installation grooves 1303 opened on the front side wall and the rear side wall of the two square blocks 1302. The air cylinders 1306 push the support blocks 1304 to support the bag mouth of the packaging bag front and back. When the size of the opened bag mouth of the packaging bag is larger than the diameter of the feed pipe 16, the second electric telescopic rods 1301, the third electric telescopic rods 14, and the air cylinders 1306 can be stopped.

[0031] It can clamp, extrude and fix the bag mouths of packaging bags with different diameters, and to a certain extent, avoid the inclination of the packaging bag caused by the lack of support for the bag mouth of the packaging bag when loading color masterbatch, thus improving the work efficiency.

[0032] As Figures 1-3 shown, connection blocks 6 are fixedly connected to the tops of the two side plates 4. A feeding funnel 5 is fixedly connected between the two connection blocks 6. A feed pipe 16 is arranged at the top of the feeding funnel 5, and a discharge pipe 17 is arranged at the bottom end of the feeding funnel 5.

[0033] A support plate 7 is arranged between the two side plates 4. The support plate 7 is located above the control component 13. A through groove is opened at the middle position of the top of the support plate 7. The discharge pipe 17 passes through the through groove and extends below the support plate 7. One end of the discharge pipe 17 located below the support plate 7 is fixedly connected with a switching valve 20; a sealing machine 8 is arranged at the front end position of the bottom of the support plate 7. The sealing machine 8 is located above the front end of the top of the second conveyor belt 10.

[0034] A slope is opened at the front end of the top of the workbench 2. Fixed plates 18 are fixedly connected to both side walls of the slope. The bottom ends of the two fixed plates 18 are fixedly connected to the bottom end of the slope. A plurality of groups of rollers 11 are arranged between the two fixed plates 18. One end of the fixed plate 18 close to the side plate 4 is located at the front bottom end of the second conveyor belt 10, and the other end of the fixed plate 18 is located above the first conveyor belt 3. Through the provided rollers 11, start the second conveyor belt 10 to transfer the sealed packaging bag onto the plurality of groups of rollers 11, and it rolls onto the first conveyor belt 3 through the plurality of groups of rollers 11.

[0035] It is convenient to convey the packaged packaging bag to the first conveyor belt 3, without manual handling, and to a certain extent, reduces the labor intensity of workers.

[0036] Working principle: First, according to the diameter of the bag mouth of the packaging bag, adjust to a suitable size by adjusting the control component 13. Through the telescopic movement of the two groups of second electric telescopic rods 1301, extend and retract until the two square blocks 1302 fixedly connected to the telescopic ends of the two groups of second electric telescopic rods 1301 are close to each other. Place the bag mouth of the packaging bag outside the two square blocks 1302 and surround the bottoms of the two square blocks 1302. At this time, start the two groups of third electric telescopic rods 14.When the pressing plates 15 fixedly connected to the telescopic ends of the two groups of third electric telescopic rods 14 are pressed against the pressing grooves 1305 formed on one side wall of the square block 1302 close to the fixed block 19 to squeeze and fix the bag mouth of the packaging bag. At this time, the two groups of second electric telescopic rods 1301 and the two groups of third electric telescopic rods 14 are simultaneously started to contract, pulling the bag mouth of the packaging bag to both sides. At this time, the air cylinders 1306 arranged in the mounting grooves 1303 formed on the front side wall and the rear side wall of the two groups of square blocks 1302 are started. The air cylinders 1306 push the support blocks 1304 to support the bag mouth of the packaging bag front and back. When the size of the bag mouth of the packaging bag is opened larger than the diameter of the feed pipe 16, the second electric telescopic rods 1301, the third electric telescopic rods 14 and the air cylinders 1306 can be stopped. At this time, the two groups of first electric telescopic rods 12 are started to expand and contract. When the contact area between the bottom of the packaging bag and the second conveyor belt 10 is slightly larger than the size of the opened bag mouth of the packaging bag, the two groups of first electric telescopic rods 12 are stopped. At this time, the motor 901 is started. The lead screw 902 drives the first moving block 903 with a thread. The first moving block 903 drives the first connecting rod 904. The first connecting rod 904 drives the second connecting rod 905 in front. The two groups of second connecting rods 905 drive the adjusting plate 906 fixedly connected to the left end. The adjusting plate 906 drives the third connecting rods 907 fixedly connected to the front end and the rear end on the left side. The two groups of third connecting rods 907 drive the fourth connecting rod 908 fixedly connected to the left end. The fourth connecting rod 908 drives the second moving block 909 fixedly connected to the middle position on the left side to move up and down on the sliding rod 910. When it moves to the position where the discharge pipe 17 is located inside the bag mouth of the packaging bag, the motor 901 can be stopped. At this time, the switch valve 20 can be opened, and the color masterbatch is discharged from the discharge pipe 17 arranged at the bottom of the feeding funnel 5 into the packaging bag. When the packaging bag is filled with the color masterbatch, the two groups of third electric telescopic rods 14 are started to contract, moving the pressing plates 15 out of the pressing grooves 1305 formed on one side wall of the square block 1302 close to the fixed block 19. Then the air cylinders 1306 are started to pull the support blocks 1304, pulling the support blocks 1304 into the mounting grooves 1303. The two groups of second electric telescopic rods 1301 are started to push. When the two groups of square blocks 1302 are close to each other, the motor 901 is started at this time, adjusting the adjusting plate 906 downward to be far away from the discharge pipe 17. Then the second conveyor belt 10 is started to move the packaging bag filled with the color masterbatch forward. At the same time, the two groups of first electric telescopic rods 12 are extended upward, away from the bag mouth of the packaging bag. When moving to the bottom end of the sealing machine 8, the second conveyor belt 10 is stopped. At this time, the motor 901 moves the packaging bag upward until the bag mouth is close to the sealing machine 8, and the sealing machine 8 seals the packaging bag. Subsequently, the motor 901 is started to move the adjusting plate 906 downward, and the second conveyor belt 10 is started to transport the sealed packaging belt to a number of groups of rollers 11, and it rolls onto the first conveyor belt 3 through the number of groups of rollers 11, thus completing the packaging work of the masterbatch.,

[0037] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it.

Claims

1. A modified plastic and masterbatch production and packaging equipment, characterized in that: include: A bottom plate (1) is provided with a first conveyor belt (3) at the front side of the top of the bottom plate (1), a workbench (2) is provided at the rear side of the first conveyor belt (3), a side plate (4) is symmetrically provided at the top of the workbench (2), an adjustment component (9) is provided at the top of the workbench (2), the adjustment component (9) comprises a motor (901), a motor (901) is fixedly connected to the outer side wall of a group of side plates (4) on the right side, the motor (901) is located in the middle position of the outer side wall of the side plate (4), the output shaft of the motor (901) is fixedly connected to a lead screw (902), the bottom end of the lead screw (902) is rotatably mounted on the top right side of the workbench (2), and the lead screw (902) is fixedly connected to the output shaft of the motor (901). A first moving block (903) is threadedly connected, a first connecting rod (904) is fixedly connected to the left side of the first moving block (903), a second connecting rod (905) is fixedly connected to the front and rear ends of the first connecting rod (904), an adjustment plate (906) is fixedly connected to the left ends of two groups of the second connecting rods (905), a second conveyor belt (10) is provided at the middle position of the top of the adjustment plate (906), first electric telescopic rods (12) are fixedly connected to both sides of the top of the adjustment plate (906), a fixed block (19) is fixedly connected to the top of the two groups of the first electric telescopic rods (12), and a control component (13) is provided on the top of the two groups of the fixed blocks (19); The control assembly (13) includes a second electric telescopic rod (1301), a side wall of the second electric telescopic rod (1301) is fixedly connected to the top of the fixed block (19), the telescopic end of the second electric telescopic rod (1301) is fixedly connected to a square block (1302), the front side wall and the rear side wall of the square block (1302) are both provided with mounting grooves (1303), cylinders (1306) are both provided in two groups of the mounting grooves (1303), and the ends of the two groups of cylinders (1306) that are relatively far away are both fixedly connected to a support block (1304); A third electric telescopic rod (14) is fixedly connected to a relatively close side wall of the two groups of fixed blocks (19), and an extrusion plate (15) is fixedly connected to the telescopic ends of the two groups of third electric telescopic rods (14). An extrusion groove (1305) is provided on a side wall of the square block (1302) close to the fixed block (19), and the extrusion groove (1305) is adapted in size to the extrusion plate (15).

2. The modified plastic and masterbatch production and packaging equipment according to claim 1, characterized in that: The front and rear ends of the left side of the adjustment plate (906) are fixedly connected to the third connecting rod (907), the left ends of the two groups of the third connecting rods (907) are fixedly connected to the fourth connecting rod (908), the middle position of the left side of the fourth connecting rod (908) is fixedly connected to the second moving block (909), the second moving block (909) is vertically penetrated by a sliding rod (910), the sliding rod (910) is slidably connected to the second moving block (909), and the bottom end of the sliding rod (910) is fixedly connected to the top end of the left side of the workbench (2).

3. The modified plastic and masterbatch production and packaging equipment according to claim 1, characterized in that: The tops of the two groups of side plates (4) are fixedly connected with connecting blocks (6), and a discharge funnel (5) is fixedly connected between the two groups of connecting blocks (6). A feed pipe (16) is provided at the top of the discharge funnel (5), and a discharge pipe (17) is provided at the bottom of the discharge funnel (5).

4. The modified plastic and masterbatch production and packaging equipment according to claim 3, characterized in that: A support plate (7) is provided between the two groups of side plates (4), the support plate (7) is located above the control assembly (13), a through slot is provided at the middle position of the top of the support plate (7), the discharge pipe (17) passes through the through slot and extends to the bottom of the support plate (7), and one end of the discharge pipe (17) located below the support plate (7) is fixedly connected to a switch valve (20).

5. The modified plastic and masterbatch production and packaging equipment according to claim 4, characterized in that: A sealing machine (8) is provided at the bottom of the support plate (7) near the front end, and the sealing machine (8) is located above the top front end of the second conveyor belt (10).

6. The modified plastic and masterbatch production and packaging equipment according to claim 1, characterized in that: A slope is provided at the front end of the top of the workbench (2), and fixed plates (18) are fixedly connected to both side walls of the slope. A plurality of rollers (11) are provided between two groups of fixed plates (18). One end of the fixed plate (18) close to the side plate (4) is located at the bottom end of the front side of the second conveyor belt (10), and the other end of the fixed plate (18) is located above the first conveyor belt (3).

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