Nixie tube shaping test equipment

Abstract

The invention provides nixie tube shaping test equipment which comprises a machine base, and the following devices are sequentially arranged on the machine a feeding device which is used for conveying and inputting nixie tubes and comprises two narrow conveying belts which are parallel to each other, and the distance between the two narrow conveying belts is adjustable; the shaping device is used for shaping the pins of the nixie tubes and comprises a shaping block, and shaping holes matched with the pins of the nixie tubes are formed in the shaping block; the testing device is used for electrical detection of the nixie tube and comprises a testing seat and probes located on the two sides of the testing seat, and the tips of the probes are electrically connected with the pins of the nixie tube located on the testing seat respectively; the discharging device is used for outputting and conveying the nixie tubes and comprises two sliding rails arranged side by side and a push rod arranged on the sliding rails. The transferring device is used for transferring the nixie tubes among the devices and comprises a U-shaped support and a T-shaped support which are installed at the tail end of the mechanical arm, and a first suction cup and a second suction cup are installed on the T-shaped support and located on the same horizontal line.

Description

Technical Field

[0001] The invention relates to the field of digital tube production equipment, and in particular to equipment for pin shaping, electrical property testing and appearance inspection of digital tubes. Background Art

[0002] A digital tube is an electronic device that can display numbers and other information. It is widely used in various household appliances and various automation equipment. A digital tube generally includes a circuit board with multiple light-emitting diodes and two rows of pins on the circuit board. During the production process of the digital tube, the pins are often not arranged neatly, which affects the subsequent assembly process. Therefore, the pins must be corrected.

[0003] The pin correction of existing digital tubes is usually done manually or with the help of some auxiliary equipment. The manual shaping method is used to shape the pins of the digital tubes, which has low production efficiency, high labor intensity, and is prone to pin breakage, making it difficult to ensure product quality.

[0004] In addition, during the production process of digital tubes, their electrical properties must be tested and the appearance of the display panel must be inspected. The electrical properties test of digital tubes in the prior art is usually completed manually with the help of testing instruments and auxiliary testing fixtures, which is inefficient, while the appearance inspection of the display panel is often performed through manual visual inspection, which is labor-intensive, inefficient, and prone to errors.

[0005] Therefore, it is necessary to provide an automated digital tube device that can automatically complete the pin calibration, electrical testing and visual inspection of the digital tube to meet production needs. Summary of the invention

[0006] In order to solve the above-mentioned problems of low automation and low efficiency in the production process of digital tubes, such as pin correction, electrical testing and visual inspection, the present invention provides a digital tube shaping test device.

[0007] The present invention discloses a digital tube shaping test device, comprising a machine base, wherein a platform of the machine base has a horizontal direction and a vertical direction perpendicular to each other, and the platform of the machine base is provided with the following devices: a feeding device, which is arranged in the horizontal direction and is used to convey the digital tube in the horizontal direction, and comprises two narrow conveyor belts which are parallel to each other and whose spacing can be adjusted, so that the pins of the digital tube are located in the gap between the two narrow conveyor belts; a shaping device, which is located on one side of the feeding device and is used to shape the pins of the digital tube, and comprises a shaping block, wherein the shaping block is provided with shaping holes which match the pins of the digital tube, and the hole depth of the shaping hole is greater than the length of the pins of the digital tube; a testing device, which is used to detect the electrical properties of the digital tube, and is located on the feeding device; Between the shaping device and the unloading device, there is a test socket and probes located on both sides of the test socket, the probes are used to electrically connect to the pins of the digital tube on the test socket; the unloading device is arranged horizontally, including two magnetic suction slide rails arranged side by side, and a push rod arranged on the magnetic suction slide rails; the transfer device is used to transfer the digital tube, including a U-shaped bracket and two T-shaped brackets installed at the end of the manipulator, the two ends of the U-shaped bracket are respectively connected to the T-shaped bracket, the T-shaped bracket is located on the same side of the U-shaped bracket and is perpendicular to the U-shaped bracket, and the first suction cup and the second suction cup are respectively installed in the strip groove of the T-shaped bracket, the first suction cup and the second suction cup are located on the same horizontal line, and the distance between the two is adjustable.

[0008] A preferred digital tube shaping test equipment disclosed in the present invention also includes a CCD detection device installed on a machine base and located on one side of the test device. The CCD detection device includes a screw assembly connected to the bottom end of a test base of the test device, which is used to drive the test device to move longitudinally, and a camera located above the far end of the screw assembly, which is used to collect image information of the digital tube on the test base.

[0009] Preferably, the CCD detection device further comprises a column, a vertical guide rail mounted on the upper portion of the side wall of the column, and a slider relatively sliding along the vertical guide rail, wherein the slider is mounted with the camera via an L-shaped connecting piece.

[0010] Preferably, a light protection cover for accommodating the CCD detection device is provided on the machine base, and a window for the test device to enter and exit below the camera of the CCD detection device is provided at the connection between the lower end of the light protection cover and the machine base.

[0011] Preferably, both sides of the upper end of the test socket of the test device extend downwards to form limiting grooves that match one side of the pin of the digital tube.

[0012] Preferably, the testing device also includes a horizontal screw rod, which passes through the bottom end of the test seat, and is sleeved with two screw nuts, which are respectively located on both sides of the test seat, and a fixing is installed on the screw nut, and the fixing is provided with a plurality of mounting holes for plugging in the probe.

[0013] Preferably, a screw seat is arranged on the outer side of the narrow conveyor belt of the feeding device, and an adjusting screw is passed through the screw seat. One end of the adjusting screw is connected to a handle, and the other end is connected to the narrow conveyor belt. The spacing between the two narrow conveyor belts can be adjusted by rotating the handle.

[0014] Preferably, a pressure plate is provided above the narrow conveyor belt of the feeding device, and a gap is provided between the pressure plate and the upper surface of the narrow conveyor belt, and the height of the gap is greater than the thickness of the edge of the digital tube shell.

[0015] Preferably, a stopper is provided at the output end of the narrow conveyor belt of the feeding device to prevent the movement of the digital tube on the narrow conveyor belt, and a gap is provided on the inner side of the stopper to facilitate the grabbing of the digital tube.

[0016] Preferably, it also includes a human-machine interactive touch screen, which is electrically connected to the loading device, the testing device, the CCD detection device, the transfer device and the unloading device.

[0017] The present invention provides an automated digital tube production device specifically for pin shaping, electrical testing and appearance visual inspection of digital tubes. The device has a reasonable structural design and stable and reliable operation. The loading, pin shaping, electrical testing, appearance inspection and unloading of digital tube workpieces are fully automated, and the production efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] 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 description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 It is a structural schematic diagram of the feeding device of the present invention;

[0021] Figure 3 It is a structural schematic diagram of the shaping device of the present invention;

[0022] Figure 4 It is a structural schematic diagram of the testing device of the present invention;

[0023] Figure 5 It is a structural schematic diagram of the CCD detection device of the present invention;

[0024] Figure 6 It is a structural schematic diagram of the transfer device implemented in the present invention;

[0025] Figure 7 for Figure 6 Schematic diagram of the local structure in;

[0026] Figure 8 It is a structural schematic diagram of the feeding device implemented in the present invention.

[0027] The following are marked in the figure:

[0028] Base 1; digital tube a; feeding device 2; narrow conveyor belt 21; screw seat 22; adjusting screw 23; handle 24; pressing plate 25; stopper 26; gap 27; shaping device 3; shaping block 31; shaping hole 32; support rod 33; testing device 4; testing seat 41; limiting groove 411; probe 42; horizontal screw 43; screw nut 44; fixing part 45; unloading device 5; magnetic slide rail 51; push rod 52; push rod motor 53 ; Transfer device 6; Robot 61; X-axis transmission member 61a; Z-axis transmission member 61b; Base 61c; U-shaped bracket 62; First suction cup 63; Second suction cup 64; T-shaped bracket 65; Strip groove 66; CCD detection device 7; Screw assembly 71; Camera 72; Column 73; Vertical guide rail 74; Slider 75; L-shaped connecting piece 76; Light protection cover 77; Window 78; Human-computer interaction touch screen 8; Display 9; Waste box 10. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only 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.

[0030] Example

[0031] See also Figure 1A digital tube shaping and testing device comprises a base 1, on the platform of the base 1 there are a transverse direction D1 and a longitudinal direction D2 perpendicular to each other, on the platform of the base 1 there are the following devices: a loading device 2, a shaping device 3, a testing device 4, a CCD detection device 7, a transfer device 6, a unloading device 5, a human-computer interaction touch screen 8 and a display screen 9 for displaying the operating status of the device. Among them, the feeding device 2 is used for transmitting and inputting the digital tube; the shaping device 3 is used for shaping the pins of the digital tube, that is, to correct the skewed pins of the digital tube; the testing device 4 is used to detect the electrical properties of the digital tube to ensure that qualified products after the electrical properties test flow into the next process; the CCD detection device 7 is also called a visual detection device, which is arranged on one side of the testing device 4 and is used to perform visual appearance inspection on the display panel of the digital tube; the transferring device 6 is used for transferring the digital tube, specifically, the digital tube at the output end of the feeding device 2 is transferred to the shaping device 3 through the transferring device 6, and after the shaping of the digital tube pins is completed, it is transferred to the testing device 4 for electrical testing, and the digital tube that passes the electrical test is transferred to the unloading device 5 through the transferring device 6; the human-computer interaction touch screen 8 is electrically connected to the feeding device 2, the testing device 4, the CCD detection device 7, the transferring device 6 and the unloading device 5.

[0032] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the feeding device 2 is arranged along the horizontal direction D1, and is used to convey the digital tube along the horizontal direction D1, and includes two narrow conveyor belts 21 which are parallel to each other and have adjustable spacing. The spacing between the two narrow conveyor belts 21 is adjustable to accommodate digital tubes of different widths, so that the pins of the digital tube are located in the gap between the two narrow conveyor belts 21, so as to prevent the narrow conveyor belts 21 from touching the pins of the digital tube and causing the pins to deform. The shaping device 3 is located on the output end side of the feeding device 2, and is arranged along the horizontal direction D1, and is used to shape the pins of the digital tube so that the pins of the digital tube are shaped into a straight state. The shaping device 3 includes a shaping block 31, and the shaping block 31 is provided with a shaping hole 32 which cooperates with the pins of the digital tube, and the hole depth of the shaping hole 32 is greater than the pin length of the digital tube. As shown Figure 4 As shown, the test device 4 is arranged along the longitudinal direction D2 and is used for electrical detection of the digital tube, and includes a test socket 41 and probes 42 located on both sides of the test socket 41. The probes 42 are used to electrically connect to the pins of the digital tube on the test socket 41. Figure 1 and Figure 8 As shown, the unloading device 5 is arranged along the horizontal direction D1 and is located in the same horizontal plane as the loading device 2 and the shaping device 3. It includes two magnetic suction rails 51 arranged side by side, and a push rod 52 arranged on the magnetic suction rails 51. The magnetic suction rails 51 have a magnetic attraction effect on the pins of the digital tube to prevent the digital tube from being separated from the magnetic suction rails 51 of the unloading device 5. Figure 6 and Figure 7 As shown, the transfer device 6 is used for transferring the digital tube, and includes a U-shaped bracket 62 and two T-shaped brackets 65 installed at the end of the manipulator 61. The two ends of the U-shape of the U-shaped bracket 62 are respectively connected to the T-shaped bracket 65. The T-shaped bracket 65 is located on the same side of the U-shaped bracket 62 and is vertically arranged with the U-shaped bracket 62. The first suction cup 63 and the second suction cup 64 are respectively installed in the strip groove 66 of the T-shaped bracket 65. The first suction cup 63 and the second suction cup 64 are located on the same horizontal line, and the distance between the two is adjustable.

[0033] like Figure 2 The figure is a schematic diagram of the structure of the feeding device 2, which includes two narrow conveyor belts 21 parallel to each other and with adjustable spacing. A screw seat 22 is provided on the outside of each narrow conveyor belt 21, and an adjusting screw 23 is passed through the screw seat 22. One end of the adjusting screw 23 is connected to a handle 24, and the other end is connected to the narrow conveyor belt 21. When the handle 24 is rotated, the adjusting screw 23 is driven to rotate in or out relative to the screw seat 22, driving the narrow conveyor belt 21 to move, thereby adjusting the spacing between the two narrow conveyor belts 21 to adapt to the transportation of digital tubes of different sizes. A pressure plate 25 for limiting the position of the digital tube is provided above the two narrow conveyor belts 21, and the pressure plate 25 extends along the moving direction of the narrow conveyor belt 21. The pressure plate 25 can also be formed by splicing multiple pieces. The overall length of the pressure plate 25 is slightly greater than the length of the narrow conveyor belt 21. There is a gap between the lower surface of the pressure plate 25 and the upper surface of the narrow conveyor belt 21. The height of the gap is greater than the thickness of the edge of the digital tube shell, so that the digital tube can pass through the gap smoothly. Two stoppers 26 are provided at the output end of the narrow conveyor belt 21. The stoppers 26 are used to prevent the digital tube on the narrow conveyor belt 21 from continuing to move forward, and a gap 27 for facilitating the transfer device 6 to grab is provided on the inner side of the upper end of the two stoppers 26.

[0034] like Figure 3 As shown, it is a schematic diagram of the structure of the shaping device 3, which includes a shaping block 31 and a support rod 33. There are four support rods 33. The lower end of the support rod 33 is fixed on the base 1. The upper end of the support rod 33 is connected to the lower ends of the four right angles of the shaping block 31, which plays a role in stabilizing the shaping block 31. The shaping block 31 is provided with shaping holes 32 that match the pins of the digital tube. The shaping holes 32 are arranged in two rows, and the number is the same as the number of pins of the digital tube. The upper end opening of each shaping hole 32 is in a trumpet shape, which facilitates the number of pins of the digital tube to smoothly extend into the shaping hole 32. When in use, the gripper of the transfer device 6 moves the digital tube transported by the loading device 2 to the top of the shaping block 31, and the gripper of the transfer device 6 moves downward, so that the pins of the digital tube are inserted along the trumpet mouth at the upper end of the shaping hole 32 of the shaping block 31, and the pins move relatively forward and backward and left and right in the shaping hole 32, and the inner wall of the shaping hole 32 and the deflected pins generate a force, so that they are corrected.

[0035] like Figure 4 As shown, it is a schematic diagram of the structure of the test device 4, including a test socket 41, and probes 42 located on both sides of the test socket 41. The probes 42 are used to electrically connect with the pins of the digital tube a on the test socket 41. The probes 42 are arranged in two rows, and the needle tips of each row of probes 42 correspond to the pins of the digital tube a on the test socket 41. On both sides of the upper end of the test socket 41, there are respectively extending downwards to form limit grooves 411 that match one side of the pins of the digital tube. The limit grooves 411 are used to limit the position of the digital tube for convenient testing. The test device 4 also includes a horizontal screw 43, which passes through the bottom end of the test socket 41. Two screw nuts 44 are respectively sleeved on the forward threaded section and the reverse threaded section of the horizontal screw 43. The horizontal screw 43 and the screw nuts 44 constitute a screw pair. The two screw nuts 44 are located on both sides of the test socket 41. A fixing part 45 is installed on the screw nut 44. The fixing part 45 is provided with a plurality of mounting holes for plugging in the probe 42. When the horizontal screw 43 rotates, the probes 42 of the fixing parts 45 on the two screw nuts 44 are driven to move relative to the test socket 41, so that the needle tip of the probe 42 can contact or move away from the pin of the digital tube on the test socket 41 for electrical detection.

[0036] like Figure 1 and Figure 5 As shown, the CCD detection device 7 includes a screw assembly 71 connected to the bottom of the test seat 41 of the test device 4, which is used to drive the test device 4 to move back and forth along the longitudinal direction D2, and a camera 72 located above the far end of the screw assembly 71, which is used to collect the image information of the digital tube on the test seat 41. When the motor of the screw assembly 71 works forward and reverse, it can drive the test seat 41 to move from one end of the screw assembly 71 to the other end of the screw assembly 71, and return to the initial test position of the test seat 41. The CCD detection device 7 also includes a column 73, a vertical guide rail 74 installed on the upper part of the side wall of the column 73, and a slider 75 that slides relatively along the vertical guide rail 74. The slider 75 is installed with the camera 72 through an L-shaped connecting piece 76. The slider 75 is driven by the motor screw pair to drive the camera 72 to move up and down, so as to facilitate the precise focusing of the camera 72. A light shield 77 for accommodating the CCD detection device 7 is arranged on the base 1 , and a window 78 for the test device 4 to enter and exit below the camera 72 of the CCD detection device 7 is arranged at the connection between the lower end of the light shield 77 and the base 1 .

[0037] like Figure 1 , Figure 6 , Figure 7As shown, the transfer device 6 includes a U-shaped bracket 62 installed at the end of the manipulator 61, and the first suction cup 63 and the second suction cup 64 are installed at both ends of the U-shaped bracket 62, and the first suction cup 63 and the second suction cup 64 are located on the same horizontal line. The first suction cup 63 and the second suction cup 64 are connected to a vacuum device, and the suction cups grasp the digital tube by vacuum adsorption. Of course, a mechanical gripper can also be used to grasp the digital tube workpiece. The manipulator 61 includes an X-axis transmission member 61a and a Z-axis transmission member 61b, and the Z-axis transmission member 61b is installed on the X-axis transmission member 61a, and the X-axis transmission member 61a is installed on the platform of the base 1 of the equipment through a base 61c.

[0038] like Figure 1 and Figure 8 As shown, the unloading device 5 includes two magnetic suction slide rails 51 arranged side by side, and a push rod 52 on the magnetic suction slide rail 51. The push rod 52 is connected to a push rod motor 53. Driven by the push rod motor 53, the push rod 52 pushes the digital tube workpiece on the magnetic suction slide rail 51 from the input end of the magnetic suction slide rail 51 to the output end to complete the unloading.

[0039] like Figure 1 As shown, a waste box 10 is provided between the input end of the testing device 4 and the unloading device 5, and the waste box 10 is used to collect digital tubes that fail the electrical property test and the display panel test.

[0040] The working principle of this embodiment:

[0041] The digital tube workpiece is transported from the input end of the loading device 2 to its output end. The loading device 2, the shaping device 3, the testing device 4 and the unloading device 5 are arranged along the same horizontal direction. The double-station suction cup of the transfer device 6 moves the digital tube workpiece from the output end of the loading device 2 to the shaping device 3, the testing device 4 and the unloading device 5. The CCD detection device 7 is arranged perpendicular to the horizontal direction. The digital tube that has passed the inspection by the test device 4 is driven by the screw assembly 71 to be moved to the camera 72 of the CCD detection device 7 for appearance inspection. After the inspection is completed, the digital tube is moved to the inspection station of the test device 4, and then transferred to the unloading device 5 through the transfer device 6, and the unqualified workpiece is transferred to the waste box 10.

[0042] The specific embodiments described herein are merely examples of the purpose of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the purpose of the present invention or exceed the scope defined by the attached claims.

Claims

1. A digital tube shaping test device, comprising a base (1), wherein the platform of the base (1) has a transverse direction (D1) and a longitudinal direction (D2) perpendicular to each other, characterized in that: The platform of the machine base (1) is provided with the following devices: A loading device (2) is arranged in the transverse direction (D1) and is used to convey the digital tube in the transverse direction (D1), comprising two narrow conveyor belts (21) parallel to each other and with an adjustable spacing, so that the pins of the digital tube are located in the gap between the two narrow conveyor belts (21); A shaping device (3) is located on one side of the feeding device (2) and is used for shaping the pins of the digital tube. The shaping device (3) comprises a shaping block (31). The shaping block (31) is provided with a shaping hole (32) that matches the pins of the digital tube. The depth of the shaping hole (32) is greater than the length of the pins of the digital tube. A testing device (4), used for electrical property detection of the digital tube, located between the shaping device (3) and the unloading device (5), comprising a testing seat (41) and probes (42) located on both sides of the testing seat (41), wherein the probes (42) are used for electrically connecting to the pins of the digital tube on the testing seat (41); A material discharge device (5) is arranged in a transverse direction (D1), comprising two magnetic attraction slide rails (51) arranged side by side, and a push rod (52) arranged on the magnetic attraction slide rails (51); The transfer device (6) is used for transferring digital tubes, comprising a U-shaped bracket (62) and two T-shaped brackets (65) installed at the end of a manipulator (61), the two ends of the U-shaped bracket (62) are respectively connected to the T-shaped brackets (65), the T-shaped brackets (65) are located on the same side of the U-shaped bracket (62) and are perpendicular to the U-shaped bracket (62), and a first suction cup (63) and a second suction cup (64) are respectively installed in a strip groove (66) of the T-shaped bracket (65), the first suction cup (63) and the second suction cup (64) are located on the same horizontal line, and the distance between the first suction cup (63) and the second suction cup (64) is adjustable.

2. The digital tube shaping test equipment according to claim 1, characterized in that: It also includes a CCD detection device (7) mounted on the machine base (1) and located on one side of the test device (41), the CCD detection device (7) including a screw assembly (71) connected to the bottom end of the test base (41) of the test device (4) and used to drive the test device (4) to move along the longitudinal direction (D2), and a camera (72) located above the far end of the screw assembly (71) and used to collect image information of a digital tube on the test base (41).

3. The digital tube shaping test equipment according to claim 2, characterized in that: The CCD detection device (7) also includes a column (73), a vertical guide rail (74) installed on the upper part of the side wall of the column (73), and a slider (75) that slides relatively along the vertical guide rail (74), and the slider (75) is installed with the camera (72) via an L-shaped connecting piece (76).

4. The digital tube shaping test equipment according to claim 3, characterized in that: A light protection cover (77) for accommodating the CCD detection device (7) is arranged on the machine base (1), and a window (78) for allowing the test device (4) to enter and exit below the camera (72) of the CCD detection device (7) is arranged at the connection between the lower end of the light protection cover (77) and the machine base (1).

5. The digital tube shaping test equipment according to claim 1, characterized in that: The upper two sides of the test seat (41) of the test device (4) are respectively provided with limit grooves (411) facing downwards and matching with one side of the pin of the digital tube.

6. The digital tube shaping test equipment according to claim 5, characterized in that: The testing device (4) further comprises a horizontal screw rod (43), the horizontal screw rod (43) passing through the bottom end of the testing seat (41), two screw rod nuts (44) being sleeved on the horizontal screw rod (43), the two screw rod nuts (44) being respectively located on two sides of the testing seat (41), a fixing piece (45) being installed on the screw rod nut (44), and a plurality of mounting holes for plugging the probe (42) are provided on the fixing piece (45).

7. The digital tube shaping test equipment according to claim 1, characterized in that: A screw seat (22) is arranged outside the narrow conveyor belt (21) of the feeding device (2), and an adjusting screw (23) is passed through the screw seat (22). One end of the adjusting screw (23) is connected to a handle (24), and the other end is connected to the narrow conveyor belt (21). The handle (24) can be rotated to adjust the distance between the two narrow conveyor belts (21).

8. The digital tube shaping test equipment according to claim 7, characterized in that: A pressing plate (25) is provided above the narrow conveyor belt (21) of the feeding device (2), and a gap is provided between the pressing plate (25) and the upper surface of the narrow conveyor belt (21), wherein the height of the gap is greater than the thickness of the edge of the digital tube housing.

9. The digital tube shaping test equipment according to claim 8, characterized in that: A stopper (26) is provided at the output end of the narrow conveyor belt (21) of the feeding device (2) to prevent the digital tube on the narrow conveyor belt (21) from continuing to move forward, and a gap (27) is provided on the inner side of the stopper (26) to facilitate the grabbing of the digital tube.

10. The digital tube shaping test equipment according to any one of claims 1 to 9, characterized in that: It also comprises a human-machine interactive touch screen (8), wherein the human-machine interactive touch screen (8) is electrically connected to the loading device (2), the testing device (4), the CCD detection device (7), the transfer device (6) and the unloading device (5).

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