Detection device for internal thread of nut

Abstract

The utility model provides a nut internal thread detection device. The nut internal thread detection device comprises a base, a supporting material frame, a nut internal thread detection mechanism, a feeding mechanism, a first moving mechanism, a second moving mechanism and a control part, a trough is formed in the supporting rack, an inlet is formed in the front end of the supporting rack, and a first outlet and a second outlet are formed in the rear end of the supporting rack; the nut internal thread detection mechanism comprises a lifting part, a driving motor and a thread detection head; the feeding mechanism is used for feeding directional nuts to the inlet; the first moving mechanism is used for moving the nuts into the material groove from the inlet, and when the nuts are detected to be qualified, the first moving mechanism further discharges the nuts in the material groove from the first outlet; when the nuts are not qualified through detection, the second moving mechanism is used for discharging the nuts in the material groove from the second outlet; and the control part is electrically connected with the lifting part, the driving motor, the feeding mechanism, the first moving mechanism and the second moving mechanism. The device is high in automation degree and good in detection efficiency, and time and labor wasting and low efficiency of manual detection are avoided.

Description

Technical Field

[0001] This utility model relates to the field of automation device technology, and more specifically, to a detection device for the internal thread of a nut. Background Technology

[0002] Nuts are parts that tightly connect mechanical equipment. Only nuts and bolts of the same specifications can be connected through their internal threads. The internal threads of nuts require high precision; if the internal threads are not machined correctly, they cannot be properly connected to the bolt. Currently, most methods for inspecting nut internal threads rely on manual labor, involving manually screwing a go / no-go gauge into the nut's threaded hole to check if the internal threads are machined correctly. This is not only time-consuming and labor-intensive but also inefficient, failing to enable rapid automated inspection and screening of nuts. Utility Model Content

[0003] The technical problem this utility model aims to solve is that existing methods for detecting the internal threads of nuts mostly rely on manual labor, which is not only time-consuming and labor-intensive but also inefficient and cannot quickly automate the detection and screening of nuts. To overcome the above-mentioned defects of the prior art, this utility model provides a device for detecting the internal threads of nuts.

[0004] This utility model provides a device for detecting the internal thread of a nut, including a base. The base is equipped with a support frame, a nut internal thread detection mechanism, a feeding mechanism, a first moving mechanism, a second moving mechanism, and a control unit. The support frame has a material groove for the nut to move laterally. The front end of the support frame has an inlet connecting to the material groove, and the rear end of the support frame has a first outlet and a second outlet connecting to the material groove. The nut internal thread detection mechanism includes a lifting part, a drive motor, and a thread detection head. The lifting part is mounted on the base, the base of the drive motor is connected to the lifting output end of the lifting part, and the thread detection head is driven by the drive motor. The rotating shaft of the device has a thread detection head that moves vertically via a lifting mechanism and is positioned directly above the material trough. The feeding mechanism is used to feed the directional nuts to the inlet. The first moving mechanism is used to move the nuts from the inlet into the material trough. When the internal thread of the nut passes the inspection, the first moving mechanism also discharges the nuts from the material trough from the first outlet for the discharge of qualified nuts. When the internal thread of the nut fails the inspection, the second moving mechanism discharges the nuts from the material trough from the second outlet for the discharge of unqualified nuts. The control unit is electrically connected to the lifting mechanism, the drive motor, the feeding mechanism, the first moving mechanism, and the second moving mechanism.

[0005] Compared with the prior art, the device for detecting the internal thread of nuts disclosed in this application has the following advantages: A feeding mechanism feeds the nut into the inlet of a support rack; a first moving mechanism moves the nut into the material trough of the support rack, providing support for the nut; and a nut internal thread detection mechanism is provided, with a lifting unit driving the thread detection head downwards and a drive motor driving the thread detection head to rotate, thereby achieving automatic detection of the nut's internal thread. When the internal thread is qualified, the control unit controls the first moving mechanism to discharge the nut from the first outlet; when the internal thread is unqualified, the control unit controls the second moving mechanism to discharge the nut from the second outlet. The automatic detection of the nut's internal thread and the automatic unloading after detection result in a high degree of automation and good detection efficiency, avoiding the time-consuming, labor-intensive, and inefficient manual detection, and realizing automated detection of the nut's internal thread.

[0006] In one possible implementation, the lifting unit includes a vertical plate, a lifting cylinder, and a lifting plate. The vertical plate is fixedly mounted on a base, the lifting plate is slidably mounted on the vertical plate, the lifting cylinder is mounted on the vertical plate and is used to drive the lifting plate to move, the base of the drive motor is mounted on the lifting plate, and the lifting cylinder is electrically connected to the control unit.

[0007] Compared with existing technologies, the above technical solution enables the thread detection head to move up and down on the base, making it convenient for detection and use.

[0008] In one possible implementation, the lifting plate is provided with a buffer part for buffering the thread detection head. The buffer part includes a fixed frame, a buffer frame and a spring. The fixed frame is fixed on the lifting plate, the buffer frame is slidably connected to the lifting plate in a vertical direction, the upper end of the spring is connected to the fixed frame, the lower end of the spring is connected to the buffer frame, and the thread detection head is rotatably mounted on the buffer frame and connected to the buffer frame around its own axis.

[0009] Compared with existing technologies, the above technical solution can buffer the thread detection head, avoid excessive impact causing deformation, and improve service life.

[0010] In one possible implementation, a visual inspection mechanism is also included, located in front of the nut internal thread inspection mechanism. The visual inspection mechanism includes a vertical rod, a connecting block, a longitudinal rod, and a camera. The vertical rod is fixedly mounted on a base. The connecting block is vertically movable and connected to the vertical rod. A first locking part is provided between the connecting block and the vertical rod. The longitudinal rod is longitudinally movable and connected to the connecting block. A second locking part is provided between the longitudinal rod and the connecting block. The camera is connected to the end of the longitudinal rod away from the connecting block. The camera is located directly above the material trough. The camera is electrically connected to a control unit.

[0011] Compared with existing technologies, the above technical solution can improve the reliability of detection by visual inspection to determine defects in the outer dimensions of nuts.

[0012] In one possible implementation, both the uprights and the longitudinal bars are cylindrical structures.

[0013] Compared with existing technologies, the above technical solution allows for easy adjustment of the camera position, which is beneficial for visual inspection.

[0014] In one possible implementation, the pole is provided with a light source to provide illumination for the camera.

[0015] Compared with existing technologies, the above technical solution can provide illumination for the camera and improve the reliability of visual inspection.

[0016] In one possible implementation, the feeding mechanism includes a directional track, a first pusher cylinder, and a first pusher block. The directional track is mounted on a base, and the discharge end of the directional track is connected to the inlet. The first pusher cylinder is mounted on the base, and the discharge end of the first pusher cylinder is connected to the first pusher block. The first pusher block is located between the directional track and the support frame. The first pusher block is used to push the nut inside the directional track and move it toward the inlet. The first pusher cylinder is electrically connected to the control unit.

[0017] Compared with existing technologies, the above technical solution can achieve directional nut feeding and facilitate nut inspection.

[0018] In one possible implementation, the first moving mechanism includes a clamp, a lateral moving part, and a longitudinal moving part. The longitudinal moving part is mounted on a base, and the longitudinal moving end of the longitudinal moving part is connected to the lateral moving part. The lateral moving end of the lateral moving part is connected to the clamp. The clamp is located near the support frame and has a slot for locking a nut. Both the lateral moving part and the longitudinal moving part are electrically connected to a control unit.

[0019] Compared with the existing technology, the above technical solution can realize the movement of the nut and remove the nut with qualified internal thread from the material groove.

[0020] In one possible implementation, the second moving mechanism includes a second pusher cylinder and a second pusher block. The second pusher cylinder is mounted on the base, and the push-out end of the second pusher cylinder is connected to the second pusher block. The second pusher block is located on the side of the material support frame and is used to push the nut in the material trough and move toward the second outlet. The second pusher cylinder is electrically connected to the control unit.

[0021] Compared with existing technologies, the above technical solution can remove nuts with unqualified internal threads from the material trough, thereby achieving nut sorting. Attached Figure Description

[0022] Figure 1This is a schematic diagram of the overall design of this utility model;

[0023] Figure 2 This is a top view of the present invention;

[0024] Figure 3 This is a schematic diagram of the nut internal thread detection mechanism;

[0025] Figure 4 This is a schematic diagram of the structure of a visual inspection mechanism;

[0026] Explanation of reference numerals in the attached figures:

[0027] 1. Base; 2. Support rack; 21. Material trough; 22. Inlet; 23. First outlet; 24. Second outlet; 3. Nut internal thread detection mechanism; 31. Lifting part; 311. Vertical plate; 312. Lifting cylinder; 313. Lifting plate; 32. Drive motor; 33. Thread detection head; 34. Buffer part; 341. Fixed frame; 342. Buffer frame; 343. Spring; 4. Feeding mechanism; 41. Oriented arrangement track; 42. First push cylinder; 43. First push block; 5. First moving mechanism; 51. Clamp; 511. Slot; 52. Lateral moving part; 53. Longitudinal moving part; 6. Second moving mechanism; 61. Second push cylinder; 62. Second push block; 7. Vision inspection mechanism; 71. Vertical rod; 72. Connecting block; 73. Longitudinal rod; 74. Camera; 75. Light source; 8. Guide ramp. Detailed Implementation

[0028] First, those skilled in the art should understand that these embodiments are merely used to explain the technical principles of the embodiments of this application and are not intended to limit the scope of protection of the embodiments of this application. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.

[0029] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0030] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0031] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0032] See Figures 1 to 4 This application discloses a device for detecting the internal thread of a nut, comprising a base 1, on which a support frame 2, a nut internal thread detection mechanism 3, a feeding mechanism 4, a first moving mechanism 5, a second moving mechanism 6, and a control unit are mounted; the support frame 2 is provided with a material groove 21 for the nut to move laterally, the front end of the support frame 2 is provided with an inlet 22 communicating with the material groove 21, and the rear end of the support frame 2 is provided with a first outlet 23 and a second outlet 24 communicating with the material groove 21; the nut internal thread detection mechanism 3 includes a lifting part 31, a drive motor 32, and a thread detection head 33, the lifting part 31 is mounted on the base 1, the base of the drive motor 32 is connected to the lifting output end of the lifting part 31, and the thread detection head 33 is drivenly connected to... The drive motor 32 rotates along its shaft. The thread detection head 33 moves vertically via the lifting part 31 and is positioned directly above the material trough 21. The feeding mechanism feeds the directional nuts to the inlet 22. The first moving mechanism 5 moves the nuts from the inlet 22 into the material trough 21. When the internal thread of the nut passes the inspection, the first moving mechanism 5 also discharges the nuts from the material trough 21 through the first outlet 23 for the discharge of qualified nuts. When the internal thread of the nut fails the inspection, the second moving mechanism 6 discharges the nuts from the material trough 21 through the second outlet 24 for the discharge of unqualified nuts. The control unit is electrically connected to the lifting part 31, the drive motor 32, the feeding mechanism 4, the first moving mechanism 5, and the second moving mechanism 6. A guide ramp 8 for unloading is provided at the first outlet 23.

[0033] As described above, the feeding mechanism 4 feeds the nuts to the inlet 22 of the support rack 2, and the first moving mechanism 5 moves the nuts into the trough 21 of the support rack 2. The trough 21 provides support for the nuts. The internal thread detection mechanism 3 is set up, and the lifting part 31 drives the thread detection head 33 to descend. The drive motor 32 drives the thread detection head 33 to rotate, so as to realize the automatic detection of the internal thread of the nut. When the internal thread is qualified, the control part controls the first moving mechanism 5 to discharge the nut from the first outlet 23. When the internal thread is unqualified, the control part controls the second moving mechanism 6 to discharge the nut from the second outlet 24. The automatic detection of the internal thread of the nut and the automatic unloading after the internal thread detection are highly automated and efficient, avoiding the time-consuming, labor-intensive and inefficient manual detection, and realizing the automated detection of the internal thread of the nut.

[0034] In this embodiment, the lifting unit 31 includes a vertical plate 311, a lifting cylinder 312, and a lifting plate 313. The vertical plate 311 is fixedly mounted on the base 1, and the lifting plate 313 is slidably mounted on the vertical plate 311. The lifting cylinder 312 is mounted on the vertical plate 311 and is used to drive the lifting plate 313 to move. The base of the drive motor 32 is mounted on the lifting plate 313, and the lifting cylinder 312 is electrically connected to the control unit. This enables the thread detection head 33 to move up and down on the base 1, facilitating detection. A vertically guiding structure is provided between the lifting plate 313 and the vertical plate 311.

[0035] In this embodiment, the lifting plate 313 is provided with a buffer part 34 for buffering the thread detection head 33. The buffer part 34 includes a fixing frame 341, a buffer frame 342, and a spring 343. The fixing frame 341 is fixed on the lifting plate 313, the buffer frame 342 is slidably connected to the lifting plate 313 vertically, the upper end of the spring 343 is connected to the fixing frame 341, and the lower end of the spring 343 is connected to the buffer frame 342. The thread detection head 33 is rotatably mounted on the buffer frame 342 around its own axis and connected to the buffer frame 342. This buffers the thread detection head 33, preventing excessive impact and deformation, and improving its service life. A vertically guiding structure is provided between the lifting plate 313 and the buffer frame 342.

[0036] In this embodiment, the device further includes a visual inspection mechanism 7 located in front of the nut internal thread inspection mechanism 3. The visual inspection mechanism 7 includes a vertical rod 71, a connecting block 72, a longitudinal rod 73, and a camera 74. The vertical rod 71 is fixedly mounted on the base 1. The connecting block 72 is vertically movable and connected to the vertical rod 71, with a first locking part between the connecting block 72 and the vertical rod 71. The longitudinal rod 73 is longitudinally movable and connected to the connecting block 72, with a second locking part between the longitudinal rod 73 and the connecting block 72. The camera 74 is connected to the end of the longitudinal rod 73 away from the connecting block 72 and is located directly above the material trough 21. The camera 74 is electrically connected to the control unit. This allows for visual inspection to determine defects in the nut's external dimensions, improving inspection reliability. Specifically, both the first and second locking parts are locking screws.

[0037] In this embodiment, both the upright 71 and the longitudinal bar 73 are cylindrical structures, which allows for easy adjustment of the position of the camera 74 and facilitates visual inspection.

[0038] In this embodiment, the pole 71 is provided with a light source 75 to provide illumination for the camera 74, thereby providing illumination for the camera 74 and improving the reliability of visual inspection.

[0039] In this embodiment, the feeding mechanism includes a directional arranging track 41, a first pusher cylinder 42, and a first pusher block 43. The directional arranging track 41 is mounted on the base 1, and the discharge end of the directional arranging track 41 is connected to the inlet 22. The first pusher cylinder 42 is mounted on the base 1, and the push-out end of the first pusher cylinder 42 is connected to the first pusher block 43. The first pusher block 43 is located between the directional arranging track 41 and the support frame 2. The first pusher block 43 is used to push the nut inside the directional arranging track 41 and move it toward the inlet 22. The first pusher cylinder 42 is electrically connected to the control unit, thereby enabling directional nut feeding and facilitating nut detection.

[0040] In this embodiment, the first moving mechanism 5 includes a clamp 51, a lateral moving part 52, and a longitudinal moving part 53. The longitudinal moving part 53 is mounted on the base 1, and its longitudinal moving end is connected to the lateral moving part 52. The lateral moving end of the lateral moving part 52 is connected to the clamp 51. The clamp 51 is located near the support frame 2 and has a slot 511 for holding a nut. Both the lateral moving part 52 and the longitudinal moving part 53 are electrically connected to the control unit, thereby enabling the movement of the nut and simultaneously removing nuts with qualified internal threads from the material groove 21. Specifically, the lateral moving part 52 has three clamps 51 on its lateral moving end.

[0041] In this embodiment, the second moving mechanism 6 includes a second pusher cylinder 61 and a second pusher block 62. The second pusher cylinder 61 is mounted on the base 1, and the push-out end of the second pusher cylinder 61 is connected to the second pusher block 62. The second pusher block 62 is located on the side of the support rack 2. The second pusher block 62 is used to push the nuts in the material trough 21 and move them toward the second outlet 24. The second pusher cylinder 61 is electrically connected to the control unit, thereby enabling the removal of nuts with unqualified internal threads from the material trough 21 and realizing nut sorting.

[0042] Nut inspection process: Multiple nuts are fed through the directional track 41. The first pusher 42 drives the first pusher 43 to move, and the first pusher 43 pushes the nuts one by one into the inlet 22 of the support rack 2. The first moving mechanism 5 moves the nuts from the inlet 22 into the trough 21. First, the camera 74 of the vision inspection mechanism 7 collects the image information of the nuts, and the image information is transmitted to the control unit. Then, the first moving mechanism 5 moves the nuts to below the thread detection head 33 of the nut internal thread inspection mechanism 3. The thread detection head 33 descends and rotates into the inner hole of the nut. The rotational force information of the drive motor 32 is transmitted to the control unit. When the nut passes the inspection, the control unit controls the first moving mechanism 5 to discharge the nut from the first outlet 23, and then guides it to the bottom by the guide ramp 8. When the nut fails the inspection, the control unit controls the second moving mechanism 6, and the second pusher drives the second pusher 62 to move. The second pusher 62 pushes the nut out of the second outlet 24. This realizes the inspection and automatic screening of nuts. The whole process is automated, improving the efficiency and quality of nut inspection.

[0043] In the description of the embodiments of this application, it should be noted that the terms "inner" and "outer" and other terms indicating direction or positional relationship are based on the direction or positional relationship shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or component must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this application.

[0044] In the description of this application, the references to terms such as "an embodiment," "some embodiments," "in this embodiment," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0045] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A device for detecting the internal thread of a nut, characterized in that, Includes a base (1), on which a material support rack (2), a nut internal thread detection mechanism (3), a feeding mechanism (4), a first moving mechanism (5), a second moving mechanism (6), and a control unit are installed; The support frame (2) is provided with a material groove (21) for the nut to move laterally. The front end of the support frame (2) is provided with an inlet (22) that connects to the material groove (21). The rear end of the support frame (2) is provided with a first outlet (23) and a second outlet (24) that connect to the material groove (21). The nut internal thread detection mechanism (3) includes a lifting part (31), a drive motor (32) and a thread detection head (33). The lifting part (31) is mounted on the base (1). The base of the drive motor (32) is connected to the lifting output end of the lifting part (31). The thread detection head (33) is connected to the rotating shaft of the drive motor (32). The thread detection head (33) moves vertically through the lifting part (31) and is positioned directly above the material trough (21). The feeding mechanism is used to feed the directional nut to the inlet (22); the first moving mechanism (5) is used to move the nut from the inlet (22) to the material trough (21). When the internal thread of the nut is qualified, the first moving mechanism (5) will also discharge the nut in the material trough (21) from the first outlet (23) for the discharge of qualified nuts. When the internal thread of the nut fails the inspection, the second moving mechanism (6) is used to discharge the nut in the material trough (21) from the second outlet (24) for the discharge of the unqualified nut; The control unit is electrically connected to the lifting unit (31), the drive motor (32), the feeding mechanism (4), the first moving mechanism (5), and the second moving mechanism (6).

2. The detection device for the internal thread of a nut according to claim 1, characterized in that, The lifting unit (31) includes a vertical plate (311), a lifting cylinder (312), and a lifting plate (313). The vertical plate (311) is fixedly installed on the base (1). The lifting plate (313) is slidably arranged on the vertical plate (311) in a vertical direction. The lifting cylinder (312) is installed on the vertical plate (311) and is used to drive the lifting plate (313) to move. The base of the drive motor (32) is installed on the lifting plate (313). The lifting cylinder (312) is electrically connected to the control unit.

3. The detection device for the internal thread of a nut according to claim 2, characterized in that, The lifting plate (313) is provided with a buffer part (34) for buffering the thread detection head (33). The buffer part (34) includes a fixed frame (341), a buffer frame (342) and a spring (343). The fixed frame (341) is fixed on the lifting plate (313). The buffer frame (342) is slidably connected to the lifting plate (313) in a vertical direction. The upper end of the spring (343) is connected to the fixed frame (341), and the lower end of the spring (343) is connected to the buffer frame (342). The thread detection head (33) is rotatably mounted on the buffer frame (342) around its own axis and is connected to the buffer frame (342).

4. The detection device for the internal thread of a nut according to claim 1, characterized in that, It also includes a vision inspection mechanism (7) located in front of the nut internal thread inspection mechanism (3). The vision inspection mechanism (7) includes a vertical rod (71), a connecting block (72), a longitudinal rod (73), and a camera (74). The vertical rod (71) is fixedly installed on the base (1). The connecting block (72) is vertically connected to the vertical rod (71). A first locking part is provided between the connecting block (72) and the vertical rod (71). The longitudinal rod (73) is vertically connected to the connecting block (72). A second locking part is provided between the longitudinal rod (73) and the connecting block (72). The camera (74) is connected to the end of the longitudinal rod (73) away from the connecting block (72). The camera (74) is located directly above the material trough (21). The camera (74) is electrically connected to the control unit.

5. The detection device for the internal thread of a nut according to claim 4, characterized in that, Both the upright (71) and the longitudinal bar (73) are cylindrical structures.

6. The detection device for the internal thread of a nut according to claim 4, characterized in that, The pole (71) is provided with a light source (75) to provide illumination for the camera (74).

7. The detection device for the internal thread of a nut according to claim 1, characterized in that, The feeding mechanism includes a directional track (41), a first pusher cylinder (42), and a first pusher block (43). The directional track (41) is mounted on the base (1), and the discharge end of the directional track (41) is connected to the inlet (22). The first pusher cylinder (42) is mounted on the base (1), and the push-out end of the first pusher cylinder (42) is connected to the first pusher block (43). The first pusher block (43) is located between the directional track (41) and the support frame (2). The first pusher block (43) is used to push the nut inside the directional track (41) and move towards the inlet (22). The first pusher cylinder (42) is electrically connected to the control unit.

8. The device for detecting the internal thread of a nut according to claim 1, characterized in that, The first moving mechanism (5) includes a chuck (51), a transverse moving part (52), and a longitudinal moving part (53). The longitudinal moving part (53) is mounted on the base (1). The longitudinal moving end of the longitudinal moving part (53) is connected to the transverse moving part (52). The transverse moving end of the transverse moving part (52) is connected to the chuck (51). The chuck (51) is located near the support frame (2). The chuck (51) is provided with a slot (511) for locking nuts. Both the transverse moving part (52) and the longitudinal moving part (53) are electrically connected to the control unit.

9. The detection device for the internal thread of a nut according to claim 1, characterized in that, The second moving mechanism (6) includes a second push cylinder (61) and a second push block (62). The second push cylinder (61) is mounted on the base (1). The push end of the second push cylinder (61) is connected to the second push block (62). The second push block (62) is located on the side of the support frame (2). The second push block (62) is used to push the nut in the material trough (21) and move towards the second outlet (24). The second push cylinder (61) is electrically connected to the control unit.

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