A visual inspection machine for throat clamp screws

Abstract

The present invention discloses a visual inspection machine for throat clamp screws, and relates to the technical field of visual inspection machines. A visual inspection machine for throat clamp screws comprises a detection device, a feeding device is provided at the feeding position of the detection device, the feeding device comprises a feeding mechanism, a feeding piece, a material shifting piece and a feeding piece, a base is fixed on the stand of the detection device, the feeding mechanism is installed on the top of the base with the feeding end facing the detection device, the material shifting piece is vertically installed on the feeding mechanism, a support rod is fixed on the top of the base, and the feeding piece is fixed at the top of the support rod. The present invention arranges the feeding piece, the feeding piece and the feeding mechanism, etc., when the device is in use, the throat clamp screw is placed on the feeding piece, and after the throat clamp screw passes through the feeding piece, the throat clamp screw is transferred to the turntable of the detection device in sequence through the feeding mechanism, and the device can also automatically adjust the posture of the throat clamp screw when in use, so as to facilitate detection.

Description

Technical Field

[0001] The invention relates to the technical field of visual inspection machines, in particular to a throat clamp screw visual inspection machine. Background Art

[0002] A visual inspection machine is a kind of inspection equipment based on machine vision technology. It obtains the image of the inspected object through a camera, and then uses image processing algorithms and related software to analyze and process the image, mainly to detect whether there are quality defects inside the object.

[0003] The visual inspection machine can inspect many metal parts, and the metal parts are transferred to the inspection table through a vibration sorting machine. For small and regular materials, the vibration plate can arrange the materials in order through vibration and transport them to the inspection table. Under the action of gravity, the heavier end of these materials will automatically stand up and stabilize on the inspection table for inspection. However, the inspection machine cannot automatically and quickly load irregular materials, especially for heterogeneous metal parts such as U-shaped throat clamp screws. Traditional visual inspection machines do not have a matching conveying system for automatic loading. In view of this situation, the present invention provides a throat clamp screw visual inspection machine with a higher degree of automation and reduced labor burden. Summary of the invention

[0004] The object of the present invention is to provide a visual inspection machine for throat clamp screws to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions: a visual inspection machine for throat clamp screws, comprising a detection device, a feeding device is provided at a feeding position of the detection device, and the feeding device comprises a feeding mechanism, a material passing part, a material shifting part and a material feeding part;

[0006] A base is fixed on the stand of the detection device, a feeding mechanism is installed on the top of the base with the feeding end facing the detection device, a material passing piece is vertically installed on the feeding mechanism, a support rod is fixed on the top of the base, and the feeding piece is fixed at the top of the support rod;

[0007] The feeding piece is used to place the throat clamp screw, which is tilted and has its end facing the feeding piece. The throat clamp screw enters the feeding piece after being removed by the material removing piece. The feeding mechanism takes the throat clamp screw out of the feeding piece and pushes it to the detection device.

[0008] Furthermore, the feeding member includes at least two feeding rods, a bending portion is fixed at one end of the feeding rod, the bending portion is inclined toward one end of the feeding member, and a stopper is fixed at the connection between the feeding rod and the bending portion.

[0009] Furthermore, the material passing part includes a box body, a bucket plate for guiding the throat clamp screw is fixedly connected to the top of the box body, a protrusion is fixed to the inner wall of one side of the box body, the top and bottom of the protrusion are inclined from the other side of the protrusion at the connection between the protrusion and the box body, and two vertical grooves with a spacing matching the distance between the two ends of the throat clamp screw are provided at the bottom of the box body facing the detection device.

[0010] Furthermore, a gap between one side of the protrusion and the box body is larger than a diameter of the throat clamp screw, and a width of the box body is larger than a width between two ends of the throat clamp screw.

[0011] Furthermore, a vertical plate is arranged between the material rods, a material removing piece is rotatably connected to one side of the vertical plate, a baffle rod is fixed near the top of the vertical plate, the baffle rod is located below the connection between the material rod and the bending part, a support plate is fixed to one side of the box body, and the vertical plate is fixed to the support plate.

[0012] Furthermore, the material-moving piece is in the shape of a fan-shaped sheet, and both ends of the material-moving piece close to the arc-shaped side are pointed so as to be inserted into the gap between the two throat clamp screws.

[0013] Furthermore, a shaft wheel 1 is provided on one side of the feeding mechanism, a protruding piece is provided on one side of the box body, gear 1 and gear 2 are rotatably installed on one side of the protruding piece, gear 1 and gear 2 are meshingly connected, wherein shaft wheel 2 is fixed on one side of gear 1, shaft wheel 3 is rotatably connected on the other side of the protruding piece, the rotating shaft of shaft wheel 3 is connected to gear 1, and shaft wheel 4 is fixed at the rotating shaft of the material removing member; shaft wheel 1 and shaft wheel 2 are connected by transmission belt 1, and shaft wheel 3 and shaft wheel 4 are connected by transmission belt 2.

[0014] Furthermore, the diameter of the gear one is greater than the diameter of the gear two, and the number of teeth of the gear one is greater than that of the gear two so that the two form a differential connection.

[0015] Furthermore, the feeding mechanism includes a slideway, a carrying plate is slidably provided between the two side plates of the slideway, and a slide groove is provided on the side of the two side plates of the slideway facing the carrying plate, one side of one of the side plates is rotatably connected to a shaft rod, a brake arm is fixedly connected to the surface of the shaft rod, and the other end of the brake arm is rotatably connected to a rocker arm, wherein the other end of the rocker arm is hinged to the bottom of the carrying plate, and a right-angle plate is fixed to the side plate connected to the shaft rod, a gap is provided between the right-angle plate and the side plate, and a shaft wheel is rotatably installed in the gap, and a driving source is installed on one side of the right-angle plate, and the output end of the driving source is fixed to the rotating shaft of the shaft wheel, wherein the shaft rod and the shaft wheel are coaxially fixed.

[0016] Furthermore, a plurality of hinge blocks are fixed on the top of the support plate, and a pusher is rotatably connected to the middle of each hinge block. The pusher includes a short plate and a long plate, and the short plate is vertically fixed to one end of the long plate, wherein one end of the short plate faces one end of the detection device.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The throat clamp screw visual inspection machine is provided with a feeding piece, a material passing piece and a feeding mechanism. When the device is in use, the throat clamp screw is placed on the feeding piece. After the throat clamp screw passes through the material passing piece, the throat clamp screw is transferred to the turntable of the inspection device in sequence through the feeding mechanism. In addition, the device can automatically adjust the posture of the throat clamp screw when in use, which is convenient for inspection. It can effectively increase the inspection efficiency and inspection quality of the visual inspection machine, improve the degree of automation of the visual inspection machine for the inspection of special-shaped parts such as throat clamp screws, reduce the burden of manual feeding, and has good practicality.

[0019] At the same time, the throat clamp screw visual inspection machine only uses one driving source during use to achieve the arrangement and posture adjustment of the throat clamp screws, and can push the throat clamp screws to the inspection table, which can effectively save resources and reduce energy consumption while improving the degree of automation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the throat clamp screw visual inspection machine of the present invention;

[0021] Figure 2 It is a schematic structural diagram of the feeding device of the present invention;

[0022] Figure 3 It is a schematic diagram of the material rod structure of the material feeding member of the present invention;

[0023] Figure 4 It is a schematic diagram of the appearance structure of the material transfer part of the present invention;

[0024] Figure 5 It is a schematic diagram of the cross-sectional structure of the material transfer part of the present invention;

[0025] Figure 6 For the present invention Figure 2 The enlarged structural diagram of part A in the middle;

[0026] Figure 7 It is a schematic diagram of the structure of the material shifting member of the present invention;

[0027] Figure 8 It is a schematic diagram of the cross-sectional structure of the feeding mechanism of the present invention;

[0028] Fig. 9 It is a front structural schematic diagram of the feeding mechanism of the present invention;

[0029] Fig.10 It is a schematic diagram of the cross-sectional structure of the pusher of the present invention.

[0030] In the figure: 1, detection device; 2, feeding device; 3, base; 4, support rod; 5, feeding member; 501, material rod; 502, bending part; 503, stopper; 6, material passing member; 601, box body; 602, vertical groove; 603, bucket plate; 604, protrusion; 7, feeding mechanism; 701, slideway; 702, shaft rod; 703, brake arm; 704, rocker arm; 705, slideway; 706, carrying plate; 707, 07, hinge block; 708, pusher; 7081, short board; 7082, long board; 709, driving source; 8, axle wheel one; 9, transmission belt one; 10, axle wheel two; 11, gear one; 111, gear two; 12, axle wheel three; 13, transmission belt two; 14, support plate; 15, vertical plate; 16, material pusher; 161, wheel piece; 162, tip; 17, axle wheel four; 18, stop rod; 19, right angle plate. DETAILED DESCRIPTION

[0031] 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.

[0032] It should be noted that, in the description of the present invention, the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0033] Furthermore, it should be understood that for the sake of ease of description, the sizes of the various components shown in the drawings are not drawn according to actual proportions. For example, the thickness or width of certain layers may be exaggerated relative to other layers.

[0034] It should be noted that like reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined or described in one drawing, it will not require further detailed discussion and description in the description of the subsequent drawings.

[0035] like Figure 1 and Figure 2As shown, the present invention provides a technical solution: a visual inspection machine for throat clamp screws, comprising a detection device 1 and a feeding device 2, the feeding device 2 comprising a feeding mechanism 7, a feeding piece 6 and a feeding piece 5, wherein a base 3 is installed on the stand of the detection device 1, a support rod 4 for supporting the feeding piece 5 is fixed on the base 3, the feeding mechanism 7 is also installed on the base 3, the feeding piece 6 is located on the feeding mechanism 7, wherein the other end of the feeding piece 5 is connected to the feeding end of the feeding piece 6, when the device is in use, the throat clamp screw is placed on the feeding piece 5, and after the throat clamp screw passes through the feeding piece 6, the throat clamp screw is transferred to the turntable of the detection device 1 in sequence through the feeding mechanism 7.

[0036] like Figure 2 and Figure 3 As shown, the feeding piece 5 includes two material rods 501, and one end of the material rod 501 is set as a bending portion 502 toward the material passing piece 6, which is inclined toward the entrance end of the material passing piece 6, and a stopper 503 is fixed on the material rod 501 near the bending portion 502. The material rod 501 is inclined from one end of the material rod 501 toward the entrance of the material passing piece 6, wherein the height of the material passing piece 6 is lower than the height of the material rod 501, and the throat clamp screws are placed on the material rod 501 in sequence. Under the action of gravity, the throat clamp screws have a tendency to slide toward the material passing piece 6, but after being blocked by the stopper 503, the throat clamp screws can be stably arranged on the material rod 501.

[0037] like Figure 4 and Figure 5 As shown, the material passing member 6 includes a box body 601, and a bucket plate 603 is fixed on the top of the box body 601. The bucket plate 603 can block the throat clamp screw and guide the throat clamp screw into the box body 601, wherein a protrusion 604 is also provided on the inner wall of one side of the box body 601, and the top and bottom of the protrusion 604 are inclined from the connection with the box body 601 to the middle of the other side of the protrusion 604, wherein the gap between the side of the protrusion 604 away from the connection with the box body 601 and the other side of the box body 601 is slightly larger than the diameter of the throat clamp screw. At the same time, the width of the box body 601 is also slightly larger than the width between the two ends of the throat clamp screw. The throat clamp screw enters the box body 601 from the top of the box body 601, descends along the inclined wall of the protrusion 604 and falls on the bottom of the box body 601.

[0038] like Figure 6 and Figure 7As shown, a vertical plate 15 is arranged between the material rods 501, and a material-discharging member 16 is rotatably connected to one side of the vertical plate 15, wherein a blocking rod 18 is fixed near the top of the vertical plate 15, and the blocking rod 18 is located below the bending portion 502 of the material rod 501. When the material-discharging member 16 rotates, the throat clamp screw is removed from the material rod 501 and pushed toward the material piece 6. During the pushing process, due to the blocking of the blocking rod 18, the center of the throat clamp screw will be offset, resulting in the U-shaped bending end of the throat clamp screw facing downward and passing through The bent portion 502 of the feeding rod 501 guides into the feeding piece 6. The feeding piece 16 includes a wheel piece 161. The wheel piece 161 is fan-shaped and both ends close to the arc side are pointed 162. When the feeding piece 16 rotates, the pointed end 162 of the feeding piece 16 will be inserted between the two throat hoop screws close to the stopper 503. After the throat hoop screw closest to the stopper 503 is pushed away, the next throat hoop screw will automatically fall into the position of the previous throat hoop screw under the action of gravity.

[0039] Replay Figure 2 In order to ensure that the material-pickup member 16 rotates stably, an axle wheel 1 8 is rotated on one side of the feeding mechanism 7, and a convex piece is provided on one side of the box body 601. A gear 1 11 and a gear 2 111 are rotatably installed on one side of the convex piece. The gear 1 11 and the gear 2 111 are meshed and connected. Axle wheel 2 10 is fixedly connected to one side of the gear 2 111. The axle wheel 2 10 and the axle wheel 1 8 are connected through a transmission belt 1 9. Axle wheel 3 12 is rotatably connected on the other side of the convex piece. The rotating shaft of the axle wheel 3 12 is connected to the gear 1 11. Axle wheel 4 17 is fixed to the rotating shaft of the material-pickup member 16. The axle wheel 4 17 and the axle wheel 3 12 are connected through a transmission belt 1 9. The transmission belt 12 is connected with the gear 13, wherein the diameter of the gear 11 is larger than that of the gear 111 and the number of teeth is more than that of the gear 111, and a differential connection is formed between the two. Therefore, in this structure, the shaft wheel 8 is the power output end. When the power is output, the material shifting member 16 realizes the rotation shifting under the power transmission, and due to the differential connection between the gear 11 and the gear 2 111, the material shifting member 16 can realize the reduced speed rotation. A support plate 14 is fixed on one side of the box body 601, wherein the vertical plate 15 is fixed on the support plate 14, and the support plate 14 is provided with a notch so that the transmission belt 13 can pass through the support plate 14 for power transmission.

[0040] like Figure 8 , Fig. 9 and Fig.10As shown, the feeding mechanism 7 includes a slide 701, and a carrying plate 706 slides between the two side plates of the slide 701. The two side plates are provided with a slide groove 705 on the side facing the carrying plate 706. The carrying plate 706 slides between the slide grooves 705 on both sides. One side of one of the side plates is rotatably connected to a shaft rod 702, and a brake arm 703 is fixed to one end of the shaft rod 702 and the shaft rod 702 is not connected to the side plate on the other side, ensuring that the brake arm 703 can rotate periodically. The other end of the brake arm 703 is rotatably connected to a rocker arm 704, and the other end of the rocker arm 704 is hinged to the bottom of the carrying plate 706. A right-angle plate 19 is also fixed to one side of one side plate. A gap is set between 19 and the side plate, and the shaft wheel 8 is rotatably installed between the right-angle plate 19 and the side plate. The shaft wheel 8 is fixedly connected to the shaft rod 702. A driving source 709 is installed on one side of the right-angle plate 19. A plurality of hinge blocks 707 are fixed on the top of the carrying plate 706. A pusher 708 is rotatably installed in the middle of each hinge block 707, wherein the pusher 708 includes a short plate 7081 and a long plate 7082, and the short plate 7081 is vertically fixed to one end of the long plate 7082, wherein the short plate 7081 faces one end of the detection device 1, therefore, under the action of gravity, one end of the short plate 7081 will stand up under the action of gravity, therefore, Figure 8 For example, when the pusher 708 is subjected to force on the left side, the long plate 7082 rests on the supporting plate 706, and the short plate 7081 stands up, so that the pushing action can be performed; when the pusher 708 is subjected to force on the right side, the pusher 708 will rotate because there is no support on the left side, so that when the pusher 708 moves to the left to feed the detection device 1, it pushes the throat clamp screw to move; when the pusher 708 moves back to the right, the short plate 7081 is subjected to force on the side and rotates, so that one end of the short plate 7081 passes under the throat clamp screw without affecting the position of the throat clamp screw, thereby realizing the step-by-step advancement of the throat clamp screw.

[0041] Based on the above, the power transmission process of the device is as follows:

[0042] In this structure, the power source of the device is a driving source 709, and the driving source 709 can be a component that can provide rotational power, such as a motor or an engine. In this structure, the driving source 709 is preferably a stepping motor, which can provide stable, reliable and relatively accurate power. When the driving source 709 supplies energy, the shaft wheel 1 8 rotates, and the kinetic energy is transmitted through the shaft wheel 2 10, the gear 2 111, the gear 1 11, the shaft wheel 3 12 and the shaft wheel 4 17, and the material shifting member 16 rotates, and the throat clamp screw is removed from the material rod 501 in turn during the rotation process. When the throat clamp screw is removed from the material rod 501, it will be blocked by the blocking rod 18, and it will rotate after being blocked by the blocking rod 18, so that the U The U-shaped end of the pusher 708 is downwardly directed into the feed piece 6, and a protrusion 604 is provided inside the box body 601 of the feed piece 6. The throat clamp screw will reach the bottom of the box body 601 with the U-shaped end facing downward. At the same time, the driving source 709 will also drive the shaft 702 to rotate, and the linkage effect of the brake arm 703 and the rocker arm 704 will continuously push the support plate 706 to perform reciprocating linear motion. At this time, since the pusher 708 will also perform reciprocating linear motion, it will inevitably contact the throat clamp screw. When the support plate 706 moves toward the end of the detection device 1, since the long plate 7082 end of the pusher 708 is against the support plate 706, the short plate 7081 will be against the bottom end of the throat clamp screw, pulling the throat clamp screw out of the box body 601 When the pusher 708 is pulled back toward one end of the over-feeding member 6, one end of the short plate 7081 of the pusher 708 will contact the throat hoop screw that has not been pushed forward a certain distance. Since the pusher 708 is rotatably installed on the support plate 706, during the process of retreating and contacting the throat hoop screw, one end of the long plate 7082 of the pusher 708 will tilt up and allow one end of the short plate 7081 to pass through the bottom of the throat hoop screw. In this case, the position of the throat hoop screw will not move synchronously with the movement of the pusher 708. When the support plate 706 moves toward the end of the detection device 1 again, the throat hoop screw will be The throat hoop screw is again drawn out from the box body 601 of the material passing piece 6 for transportation. During the repeated transportation process, the throat hoop screw is sent to the detection device 1. At the same time, since the driving source 709 transmits power to the material-discharging piece 16 through the differential connection of gear 1 11 and gear 2 111, the pushing speed of the support plate 706 is greater than the discharging speed of the material-discharging piece 16. After the throat hoop screw falls into the box body 601, the throat hoop screw is pushed by the feeding mechanism 7 to the turntable of the detection device 1 for visual inspection. This process is faster than the process of removing the throat hoop screw from the material-discharging piece 16. Therefore, in the process of removing the throat hoop screw and sending it to the detection device 1, there will be no interference caused by the asynchronous feeding frequency.

[0043] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A visual inspection machine for throat clamp screws, comprising an inspection device (1), characterized in that: A feeding device (2) is provided at the feeding position of the detection device (1), and the feeding device (2) comprises a feeding mechanism (7), a material passing member (6), a material shifting member (16) and a material feeding member (5); A base (3) is fixed on the stand of the detection device (1), a feeding mechanism (7) is installed on the top of the base (3) with the feeding end facing the detection device (1), a material passing member (6) is vertically installed on the feeding mechanism (7), a support rod (4) is fixed on the top of the base (3), and a feeding member (5) is fixed at the top of the support rod (4); The feeding member (5) is used to place the throat clamp screw, and is arranged obliquely with its end facing the feeding member (6). The throat clamp screw is removed by the material removing member (16) and then enters the feeding member (6). The feeding mechanism (7) takes the throat clamp screw out of the feeding member (6) and pushes it to the detection device (1); The feeding member (5) comprises at least two material rods (501), one end of each material rod (501) being fixed with a bent portion (502), the bent portion (502) being arranged to be inclined toward one end of a material passing member (6), a stopper (503) being fixed at the connection between the material rod (501) and the bent portion (502), the material passing member (6) comprising a box body (601), a bucket plate (603) for guiding a throat clamp screw being fixedly connected to the top of the box body (601), a protrusion (604) being fixed to the inner wall of one side of the box body (601), the top and bottom of the protrusion (604) both being inclined from the connection between the protrusion (604) and the box body (601) to the other side of the protrusion (604), the bottom of the box body (601) facing the detection device (1) being provided with two vertical grooves (602) having a spacing matching the distance between the two ends of the throat clamp screw, one side of the protrusion (604) being connected to the box body ( 601) is larger than the diameter of the throat hoop screw, the width of the box body (601) is larger than the width between the two ends of the throat hoop screw, a vertical plate (15) is arranged between the material rods (501), one side of the vertical plate (15) is rotatably connected to a material shifting piece (16), a stopper (18) is fixed to the vertical plate (15) near the top, the stopper (18) is located below the connection between the material rod (501) and the bent portion (502), a support plate (14) is fixed to one side of the box body (601), the vertical plate (15) is fixed to the support plate (14), when the material shifting piece (16) rotates, the throat hoop screw is removed from the material rod (501) and pushed toward the material passing piece (6), during the pushing process, due to the blocking of the stopper (18), the center of the throat hoop screw will be offset, resulting in the U-shaped bent end of the throat hoop screw facing downward and passing through the bent portion (502) of the material rod (501) to guide it into the material passing piece (6); A shaft wheel 1 (8) is provided on one side of the feeding mechanism (7), a protruding piece is provided on one side of the box body (601), a gear 1 (11) and a gear 2 (111) are rotatably mounted on one side of the protruding piece, the gear 1 (11) and the gear 2 (111) are meshingly connected, wherein a shaft wheel 2 (10) is fixed on one side of the gear 1 (11), a shaft wheel 3 (12) is rotatably connected on the other side of the protruding piece, the rotating shaft of the shaft wheel 3 (12) is connected to the gear 1 (11), and a shaft wheel 4 (17) is fixed on the rotating shaft of the material shifting member (16); The shaft wheel one (8) and the shaft wheel two (10) are connected via a transmission belt one (9), and the shaft wheel three (12) and the shaft wheel four (17) are connected via a transmission belt two (13); The feeding mechanism (7) comprises a slideway (701), a carrying plate (706) is slidably arranged between two side plates of the slideway (701), a slide groove (705) is provided on one side of the two side plates of the slideway (701) facing the carrying plate (706), one side of one of the side plates is rotatably connected to a shaft (702), a brake arm (703) is fixedly connected to the surface of the shaft (702), the other end of the brake arm (703) is rotatably connected to a rocker arm (704), wherein the other end of the rocker arm (704) is hinged to the bottom of the carrying plate (706); A right-angle plate (19) is fixed to one side of the side plate, a gap is provided between the right-angle plate (19) and the side plate, and the shaft wheel (8) is rotatably installed in the gap, and a driving source (709) is installed on one side of the right-angle plate (19), and the output end of the driving source (709) is fixed to the rotating shaft of the shaft wheel (8), wherein the shaft rod (702) is coaxially fixed to the shaft wheel (8); A plurality of hinge blocks (707) are fixed on the top of the support plate (706), and a pusher (708) is rotatably connected to the middle of each hinge block (707). The pusher (708) comprises a short plate (7081) and a long plate (7082), wherein the short plate (7081) is vertically fixed to one end of the long plate (7082), wherein one end of the short plate (7081) faces one end of the detection device (1).

2. A visual inspection machine for throat clamp screws according to claim 1, characterized in that: The material-push-away piece (16) is in the shape of a fan-shaped sheet, and both ends of the material-push-away piece (16) close to the arc-shaped side are pointed so as to be inserted into the gap between the two throat clamp screws.

3. A visual inspection machine for throat clamp screws according to claim 1, characterized in that: The diameter of the gear one (11) is greater than the diameter of the gear two (111), and the number of teeth of the gear one (11) is greater than that of the gear two (111) so that the two form a differential connection.

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