Screw detection device

Abstract

SOLUTION: A screw detecting device is used for detecting a screw, and a body of the screw detecting device includes a control module, a mounting mechanism, an upper visual detection mechanism, and a side visual detection mechanism. The screws can be fed into the body and mounted on two guide rails of the mounting mechanism. An upper visual detection lens of the upper visual detection mechanism and a side visual detection lens of the side visual detection mechanism capture the screw on the mounting rail. The control module can determine the presence of screw defects based on the captured images. A screw having a defect is excluded by the control of a sorting section. The control module automatically adjusts the mounting rail, the upper visual detection lens, and the side visual detection lens to match the screw detection device to the detection needs of screws having different dimensions.EFFECT: A working time for adjustment can be shortened without relying on artificial adjustment and errors caused by adjustment of a device can be reduced.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to detection equipment for detecting screws, and more particularly to equipment in which a mounting rail for mounting screws is linear and an adjustment mechanism is automatically controlled by a control module to detect screws with different detection dimensions. [Background technology]

[0002] Recently, in the screw manufacturing industry, in order to save labor costs and reduce the detection error rate, screw detection equipment is used to detect screws. The screw detection equipment includes multiple lenses and a dial, which has multiple detection grooves, and the multiple detection lenses surround the dial and shoot toward the dial, and the screw detection equipment is capable of rotating the dial.

[0003] When performing screw detection work, a number of screws are transported onto a dial by the screw feeding equipment, and then each screw is fed into the corresponding detection groove. The screw detection equipment rotates the dial and causes the screws to pass in front of a number of detection lenses in conjunction with the rotation of the dial. The screws are detected by photographing them with the multiple detection lenses, and the presence or absence of defects is determined.

[0004] However, screw manufacturing factories usually produce screws of different sizes, and the detection grooves of the dials also have different sizes accordingly, so the dials need to be changed to detect screws of different sizes, which is not only inconvenient but also requires the detection lens to be refocused. Dials must be changed and the focus must be readjusted manually, but manual adjustments are prone to errors, which in turn leads to an increase in the detection error rate and product defect rate. Furthermore, it is difficult to determine whether the cause of a product defect is due to an error in the detection equipment or a manufacturing error, so there is room for improvement. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent No. 7041200B2 Summary of the Invention

[0006] The object of the present invention is to provide a screw detection equipment that can improve the problems such as the inconvenience of manually changing a dial or adjusting the focal length of a detection lens in the current detection equipment, which leads to an increase in the detection error rate and product defect rate, and the difficulty of determining the cause of product defects.

[0007] In order to achieve the above object, the screw detection equipment of the present invention comprises: a main body having a carrier plate, a sorting unit mounted on the carrier plate, and a control module electrically connected to the sorting unit; a mounting mechanism provided on a carrier plate, the mounting mechanism including a mounting rail having two guide rails extending in a linear direction and installed in parallel; a distance adjustment unit connected to the two guide rails and operable to move the two guide rails closer to or apart from each other; and a conveying unit capable of moving screws located on the two guide rails along the linear direction toward the sorting unit in accordance with the mounting rail, the control module electrically connecting and controlling the distance adjustment unit and the conveying unit; an upper visual detection mechanism provided on the carrier plate, the upper visual detection mechanism including an upper visual detection lens located above the mounting rail and facing the mounting rail, and an upper focal length control connected to the upper visual detection lens, electrically connected to the control module, and controlled by the control module so as to adjust the focal length of the upper visual detection lens; a side visual detection mechanism installed on the carrier plate, the side visual detection mechanism including a side visual detection lens located on a side of the mounting rail and facing the mounting rail, and a side focal length control connected to the side visual detection lens, electrically connected to the control module, and controlled by the control module so as to adjust the focal length of the side visual detection lens; The control module electrically connects the upper visual detection lens and the side visual detection lens, and controls the upper visual detection lens and the side visual detection lens to photograph the screw, determine whether the screw has a defect, and reject defective screws using the classification unit.

[0008] The screw detection equipment of the present invention is used to detect screws, and a single screw feed equipment transports a plurality of screws to the two guide rails of the mounting rail of the mounting mechanism, causes the screws to enter between the two guide rails, and drives the transport unit to advance the screws in the linear direction. When passing through the upper visual detection lens of the upper visual detection mechanism and the side visual detection lens of the side visual detection mechanism, the screw is photographed, and a control module of the screw detection equipment detects the screw and determines whether there is a defect, and the defective screw is rejected by the sorting unit.

[0009] The screw detection equipment exhibits the following excellent effects. (1) Reduction of errors: When using the screw detection device to detect screws of different dimensions, adjustment parameters are set in advance for the control module. As a result, the control module can control the distance adjustment unit to move the two guide rails closer to or farther apart, i.e., adjust the distance between the two guide rails to suit screws of different dimensions, and also control the upper focal length control unit to adjust the focal length of the upper visual detection lens, and control the side visual detection lens to adjust the focal length of the side visual detection lens, thereby automatically adjusting the screw detection equipment to suit the detection needs of screws 50 of different dimensions. This not only improves convenience and shortens the work time required for adjustment without relying on manual adjustment, but also effectively reduces errors caused by equipment adjustment and improves detection accuracy. (2) Improved detection capacity: In conventional technology, the screw to be detected was placed on a dial, so a screw feed device was required to transport multiple screws to the rotating dial, and the number of rotations of the dial was limited due to the influence of centrifugal force. On the other hand, in the present invention, the two guide rails in the mounting mechanism of the screw detection equipment extend in a linear direction, and the conveying part of the mounting mechanism detects the screws on the two guide rails while moving them in the linear direction, so there is no need to take into account the effects of centrifugal force and it is possible to increase the screw feed speed of the screw feed equipment, thereby improving the detection amount. (3) Cost reduction: In this way, the distance between the two guide rails can be adjusted by the distance adjustment part, so that the mounting rail can be adapted to screws of different dimensions, eliminating the need to prepare dials of different dimensions, thereby enabling cost reduction. [Brief description of the drawings]

[0010] [Figure 1] FIG. 1 is a perspective view of an embodiment of a screw detection device according to the present invention. [Diagram 2] FIG. 2 is a perspective view of the inside of the main body of the screw detection device of the present invention. [Diagram 3] FIG. 4 is a perspective view of the inside of the main body of the screw detection device of the present invention viewed from another angle. [Figure 4] FIG. 2 is a plan view of the inside of the main body of the screw detection device of the present invention. [Diagram 5] FIG. 2 is a front view of the inside of the main body of the screw detection device of the present invention. [Figure 6] FIG. 2 is a partial plan view of the inside of the main body of the screw detection device of the present invention. [Figure 7] FIG. 2 is a perspective view of an upper visual detection mechanism of the screw detection facility of the present invention. [Figure 8] FIG. 4 is a perspective view of the upper visual detection mechanism of the screw detection equipment of the present invention from another viewpoint. [Figure 9] FIG. 2 is a perspective view of a side visual detection mechanism of the screw detection facility of the present invention. [Figure 10] FIG. 4 is a perspective view of the side visual detection mechanism of the screw detection equipment of the present invention from another viewpoint. [Figure 11] FIG. 4 is a bottom view of the carrier plate and mounting mechanism of the screw detection device of the present invention. [Figure 12] FIG. 4 is a perspective view of a contact portion of the screw detection device of the present invention. [Figure 13] FIG. 2 is a plan view of the loading end and detection area of ​​the mounting mechanism of the screw detection equipment of the present invention. [Figure 14] FIG. 4 is a plan view of the discharge end of the mounting mechanism of the screw detection equipment of the present invention. [Figure 15] FIG. 2 is a side view of a screw positioned on the mounting mechanism of the screw detection device of the present invention. [Figure 16] FIG. 4 is a partially enlarged side view of a screw positioned on the mounting mechanism of the screw detection device of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] An embodiment of a screw detection facility 1 of the present invention will be described with reference to Figs. The screw detection equipment 1 includes a main body 10, a mounting mechanism 20, an upward visual detection mechanism 30, and a side visual detection mechanism 40.

[0012] As shown in FIGS. 1 to 3, main body 10 has a carrier plate 11, a sorting unit 13 installed on carrier plate 11, and a control module 12 built into main body 10 and electrically connected to sorting unit 13.

[0013] As shown in Figures 2 to 5, the mounting mechanism 20 includes a mounting rail 21 provided on the carrier plate 11, having two guide rails 211 extending in a linear direction and installed in parallel, a distance adjustment unit 22 connected to the two guide rails 211 and operable to move the two guide rails 211 closer to or apart from each other, and a conveying unit 23 capable of moving the screws 50 located on the two guide rails 211 along the linear direction toward the sorting unit 13 in accordance with the mounting rail 21, as shown in Figures 12 to 14, and the control module 12 electrically connects and controls the distance adjustment unit 22 and the conveying unit 23.

[0014] As shown in Figures 2 to 8, the upward visual detection mechanism 30 is installed on the carrier plate 11, positioned above the mounting rail 21, and includes an upward visual detection lens 31 facing the mounting rail 21, and an upward focal length control unit 32 connected to the upward visual detection lens 31, electrically connected to the control module 12, and controlled by the control module 12 so as to adjust the focal length of the upward visual detection lens 31.

[0015] As shown in Figures 2 to 6, 9 and 10, the lateral visual detection mechanism 40 is installed on the carrier plate 11, is positioned to the side of the mounting rail 21, and includes a lateral visual detection lens 41 facing the mounting rail 21, and a lateral focal length control unit 42 connected to the lateral visual detection lens 41, electrically connected to the control module 12, and controlled by the control module 12 so as to adjust the focal length of the lateral visual detection lens 41. The control module 12 electrically connects the upper visual detection lens 31 and the side visual detection lens 41, controls them to photograph the screws 50, determines whether the screws 50 are defective, and rejects the defective screws 50 using the sorting unit 13.

[0016] As shown in Figures 13 to 15, the screw detection equipment 1 of the present invention is used to detect screws 50, and a single screw feed equipment transports a plurality of screws 50 to two guide rails 211 of the mounting rail 21 of the mounting mechanism 20, causes the screws 50 to enter between the two guide rails 211, and drives the conveying unit 23 to advance the screws 50 in the linear direction. As the screw 50 passes through the upper visual detection lens 31 of the upper visual detection mechanism 30 and the side visual detection lens 41 of the side visual detection mechanism 40, the screw 50 is photographed, and the control module 12 of the screw detection equipment detects the screw 50 and determines whether or not there is a defect.

[0017] As shown in Figures 4, 13 and 14, both ends of the mounting rail 21 are an input end 212 and an output end 213, the mounting rail 21 has a detection area between the input end 212 and the output end 213, the screws 50 are loaded into the mounting rail 21 from the input end 212 and output from the output end 213, the sorting section 13 is adjacent to the output end 213, and the upper visual detection lens 31 and the side visual detection lens 41 each face toward the detection area of ​​the mounting rail 21.

[0018] As shown in Figures 2, 4, 12 and 13, the conveying unit 23 includes one conveying drive unit 231 and two conveying belts 232, the conveying drive unit 231 includes one conveying drive element 233, one conveying link member 234 and two drive wheels 235, the conveying drive element 233 is installed on the carrier plate 11 and electrically connected to and controlled by the control module 12, the conveying drive element 233 is connected to the conveying link member 234, the two drive wheels 235 are respectively connected to the conveying link members 234 and correspond to the two guide rails 211, the two conveying belts 232 are wound around the two drive wheels 235 and the two guide rails 211, the conveying drive unit 231 is capable of driving the two conveying belts 232, and it is preferable that the conveying drive element 233 is a motor.

[0019] As shown in Figures 13 to 16, each guide rail 211 includes a guide rail base 214 and a guide rail member 215 installed on the guide rail base 214, and the two drive wheels 235 are each installed on the guide rail base 214 of the corresponding guide rail 211, and the conveyor belt 232 is wound around the guide rail member 215 of the corresponding guide rail 211. Each guide rail 211 is respectively mounted on a guide rail member 215 and includes a plurality of position regulating blocks 216 that regulate the position of the guide rail 211 and the corresponding conveying belt 232, and a plurality of guide wheels 217 that are respectively adjustably mounted on the guide rail base 214 and positioned at both ends of the guide rail member 215, and the two conveying belts 232 are respectively wound around the guide wheels 217 of the corresponding guide rails 211, and the plurality of guide wheels 217 abut against the corresponding conveying belts 232.

[0020] As shown in Figures 12 and 15, the mounting mechanism 20 includes an abutment portion 24 located at the loading end 212 of the mounting rail 21, and the abutment portion 24 includes an abutment base 241 provided on the mounting rail 21, an abutment arm 242 having one end rotatably mounted on the abutment base 241 and the other end located above the two guide rails 211 and having an abutment wheel 244 provided thereon, and an elastic member 243 provided between the abutment base 241 and the abutment arm 242 and abutting against the abutment base 241 and the abutment arm 242. When the screw feeding equipment feeds the screw 50 into the loading end 212 of the mounting rail 21, the bolt of the screw 50 passes through the bottom side of the abutment wheel 244, and the abutment wheel 244 is brought into contact with the bolt of the screw 50 by the biasing force of the elastic member 243 so that the screw 50 is reliably fed into the mounting rail 21.

[0021] As shown in Figures 15 and 16, the bolt of the screw 50 is mounted on two conveying belts 232, and the threads of the screw 50 are located in the gap between the guide rail members 215, and the control module 12 controls the conveying driver 233 of the conveying drive unit 231 of the conveying unit 23 to operate, and rotates the two driving wheels 235 by the conveying link member 234, and the two driving wheels 235 move the conveying belts 232 on the corresponding guide rails 211, and move the screw 50 from the input end 212 of the mounting rail 21 toward the output end 213 along a linear direction.

[0022] In each guide rail 211, a plurality of position regulating blocks 216 regulate the position of the corresponding conveyor belt 232 on the guide rail member 215, and a plurality of guide wheels 217 are adjusted to abut against the conveyor belt 232, increasing the tension abutting against the conveyor belt 232 and preventing the conveyor belt 232 from coming off, thereby improving the operational stability of the conveyor belt 232.

[0023] When the screw 50 moves into the detection area and passes under the upper visual detection lens 31, the upper visual detection lens 31 photographs the screw 50 to photograph the bolt of the screw 50, and when the screw 50 passes in front of the side visual detection lens 41, the side visual detection lens 41 photographs the screw 50 to photograph the thread of the screw 50, and the upper visual detection lens 31 and the side visual detection lens 41 each transmit the photographing data to the control module 12, and the control module 12 determines whether the screw 50 has a defect based on the photographing data.

[0024] As shown in FIG. 14, the sorting section 13 of the main body 10 includes a first discharge path 131, a second discharge path 132, and a blowing sorting member 133, the first discharge path 131 and the second discharge path 132 are adjacent to an end of the mounting rail 21, the position of the first discharge path 131 corresponds to the end of the mounting rail 21, the second discharge path 132 is adjacent to the first discharge path 131, the blowing sorting member 133 is adjacent to the end of the mounting rail 21, is connected to an external air source, and is electrically connected to and controlled by the control module 12.

[0025] If the control module 12 determines that the screw 50 is a normal screw with no defects, when the normal screw 50 moves to the discharge end 213 of the mounting rail 21, the control module 12 controls the blowing sorting member 133 of the sorting section 13 to blow gas, causing the normal screw 50 to detach from the mounting rail 21 and drop into the second discharge path 132. On the other hand, if the control module 12 determines that the screw 50 is a defective screw having a defect, when the defective screw 50 moves to the discharge end 213 of the mounting rail 21, the defective screw 50 detaches from the mounting rail 21 and falls directly into the first discharge path 131, so that the normal screw 50 and the defective screw 50 can be distinguished.

[0026] In the prior art, the screw to be detected was placed on a dial, so a screw feed device was required to transport multiple screws to the rotating dial, and the number of rotations of the dial was limited due to the influence of centrifugal force. On the other hand, in the present invention, the two guide rails 211 in the mounting mechanism 20 of the screw detection equipment extend in a linear direction, and the conveying section 23 of the mounting mechanism 20 detects the screws 50 on the two guide rails while moving them in the linear direction, so there is no need to take into account the effects of centrifugal force and it is possible to increase the screw feed speed of the screw feed equipment, thereby improving the detection amount.

[0027] As shown in FIG. 2, FIG. 3, FIG. 6 and FIG. 11, the distance adjustment part 22 is provided at the bottom of the carrier plate 11, and includes at least one distance rail 221, one adjustment actuator 222, one adjustment interlocking member 223 and two connecting rods 224. The at least one distance rail 221 is installed on the carrier plate 11 vertically in the linear direction, and the guide rail bases 214 of the two guide rails 211 are each linearly movable on the at least one distance rail 221, and the one adjustment actuator 222, the one adjustment interlocking member 223 and the two connecting rods 224 are connected in sequence. The two connecting rods 224 are connected to the guide rail bases 214 of the two guide rails 211 through the carrier plate 11, respectively. The adjustment actuator 222 is electrically connected to the control module 12 and controlled by the control module 12 so as to operate the adjustment interlocking member 223, thereby moving the two connecting rods 224 in conjunction with each other to move the two guide rails 211 closer to and farther away from each other, and adjusting the gap between the two guide rail members 215 to fit screws 50 of different dimensions. The adjustment driver 222 is preferably a motor. The distance adjustment unit 22 includes a manual adjustment member 225 connected to the adjustment interlocking member 223, and by operating the manual adjustment member 225, the two guide rail members 215 can be artificially adjusted.

[0028] As shown in FIGS. 6 to 8, the upper visual detection mechanism 30 includes an upper base 33, an upper light compensation unit 34, and an upper backlight plate 35. The upper base 33 is erected on the carrier plate 11. The upper visual detection lens 31, the upper focal length control unit 32, and the upper light compensation unit 34 are mounted on the upper base 33. The upper light compensation unit 34 includes an upper light compensation moving member 341 and an upper light compensation member 342. The upper light compensation moving member 341 is electrically connected to the control module 12. Both are controlled, the upper light compensating moving member 341 is connected to the upper light compensating member 342 and can be driven to move the upper light compensating member 342 up and down, the upper light compensating member 342 is located between the upper visual detection lens 31 and the two guide rails 211 of the mounting rail 21, the upper backlight plate 35 is installed on the mounting rail 21 and is located below the two guide rails 211, and the position of the upper backlight plate 35 corresponds to the upper visual detection lens 31.

[0029] As shown in Figures 2 to 4, 9 and 10, the side visual detection mechanism 40 includes a side base 43, a side lens moving unit 44, and a side backlight plate 45, the side base 43 is erected on the carrier plate 11, the side lens moving unit 44 includes a side lens base 441 and a base driver 442, the side lens base 441 is installed on the side base 43 so as to be movable up and down, the base driver 442 is installed on the side base 43 and electrically connected to the control module and is controlled so as to be driven so as to move the side lens base 442, the side visual detection lens 41 and the side focal length control unit 42 are installed on the side lens base 441, the position of the side backlight plate 45 corresponds to the side visual detection lens 41, the side backlight plate 45 and the side visual detection lens 41 are located on both sides of the two guide rails 211, respectively, and it is preferable that the base driver 442 is a motor.

[0030] The upper backlight plate 35 is electrically connected to and controlled by the control module 12, and the upper light compensating member 342 and the upper backlight plate 35 emit light to make the photo of the screw 50 captured by the upper visual detection lens 31 clearer, and the side backlight plate 45 is electrically connected to and controlled by the control module 12, and emits light to make the photo of the screw 50 captured by the side visual detection lens 41 clearer, thereby improving the accuracy of detection.

[0031] The control module 12 controls the upward focal length control unit 32 to adjust the focal length of the upward visual detection lens 31, controls the upward light compensation moving member 341 to drive the upward light compensation member 342 to move up and down, controls the lateral focal length control unit 42 to adjust the focal length of the lateral visual detection lens 41, and adjusts the height position of the lateral visual detection lens 41 by controlling the base driver 442 of the lateral lens moving unit 44 to move the lateral lens base 441 up and down along the lateral base 43.

[0032] When using the screw detection equipment to detect screws 50 of different dimensions, adjustment parameters can be set in advance for the control module 12, which can enable the control module 12 to automatically adjust the mounting rail 21, the upward visual detection lens 31, and the side visual detection lens 41 to meet the detection needs of screws 50 of different dimensions. This not only improves convenience and shortens work time without relying on manual adjustment, but also effectively reduces errors caused by equipment adjustment and improves detection accuracy. It also becomes easier to determine whether the cause of a product defect is due to a manufacturing error.

[0033] Since the distance between the two guide rails 211 can be adjusted by the distance adjustment part 22, the mounting rail 21 can be adapted to screws 50 of different dimensions, and it becomes unnecessary to prepare dials of different dimensions, which enables cost reduction. Furthermore, after a screw of a certain dimension is detected by one screw detection device, the control module 12 in the main body 10 of the screw detection device can record the adjustment parameters of the screw of the dimension, and the adjustment parameters can be provided to the control module 12 of another screw detection device, so that different screw detection devices can share the adjustment parameters and do not need to duplicate detection and recording, which improves convenience.

[0034] From the above, it is clear that the screw detection equipment is capable of detecting screws 50 of different dimensions, and by setting adjustment parameters in advance for the control module 12, the control module 12 can automatically adjust the mounting rail 21, the upward visual detection lens 31, and the side visual detection lens 41 to meet the detection needs of screws 50 of different dimensions, thereby increasing the detection amount by using the mounting rail 21 extending in a linear direction without relying on manual adjustment. [Explanation of symbols]

[0035] 10. Main unit 11. Carrier plate 12. Control module 13... Sorting section 131···First exit route 132 Second exit route 133....Spray-on separation material 20. Mounting mechanism 21 Mounting rail 211···Guide rail 212....Loading end 213...Unloading end 214···Guide rail base 215 Guide rail member 216 Position control block 217···Guide wheel 22...Distance adjustment section 221... Distance rail 222...Adjustment driver 223...Adjustment linkage member 224...Connecting rod 225 Manual adjustment member 23...Transportation section 231...Transport drive unit 232...Conveyor belt 233...Transport driver 234....Transport link member 235···Drive wheel 24...Contact part 241...Abutment base 242...Abutment arm 243 Elastic member 244...Abutting ring 30. Upward visual detection mechanism 31...Upward visual detection lens 32...Upper focal length control section 33...Upper base 34...Upper illumination section 341...Upper auxiliary light moving member 342...Upper lighting member 35 Upper backlight plate 40 Lateral visual detection mechanism 41...Side visual detection lens 42 Side focal length control section 43 Lateral base 44... Lateral lens moving part 441... Lateral lens base 442···Base driver 45 Side backlight plate 50···Screw

Claims

1. A screw detection device, comprising: a main body including a carrier plate, a sorting unit installed on the carrier plate, and a control module built into the main body and electrically connected to the sorting unit; A mounting mechanism provided on the carrier plate includes a mounting rail having two guide rails extending in a linear direction and installed in parallel, a distance adjustment unit connected to the two guide rails and operable to move the two guide rails closer to or apart from each other, and a conveying unit capable of moving screws located on the two guide rails along the linear direction in accordance with the mounting rail toward the sorting unit, and the control module electrically connects and controls the distance adjustment unit and the conveying unit to the mounting mechanism; an upper visual detection mechanism installed on the carrier plate, the upper visual detection mechanism including an upper visual detection lens located above the mounting rail and facing the mounting rail, and an upper focal length control unit connected to the upper visual detection lens and electrically connected to the control module and controlled by the control module so as to adjust a focal length of the upper visual detection lens; a side visual detection mechanism installed on the carrier plate, the side visual detection mechanism including a side visual detection lens located on a side of the mounting rail and facing the mounting rail, and a side focal length control unit connected to the side visual detection lens and electrically connected to the control module and controlled by the control module so as to adjust the focal length of the side visual detection lens; The control module electrically connects the upper visual detection lens and the side visual detection lens, and controls the upper visual detection lens and the side visual detection lens to photograph the screw, determines whether the screw is defective, and rejects defective screws using the classification unit.

2. The opposite ends of the mounting rail are an in-load end and an out-load end; the loading rail is provided with a detection area between the loading end and the unloading end; The screw is delivered to the mounting rail from the delivery end and delivered to the delivery end; The sorting section is adjacent to the discharge end, The screw detection fixture of claim 1 , wherein the upward visual detection lens and the side visual detection lens each face toward a detection area of ​​the mounting rail.

3. The mounting mechanism includes an abutment located at an entry end of the mounting rail; 3. The screw detection equipment according to claim 2, wherein the contact part includes: a contact base provided on the mounting rail; a contact arm having one end rotatably mounted on the contact base and the other end located above the two guide rails and provided with a contact ring; and an elastic member provided between the contact base and the contact arm and contacting the contact base and the contact arm.

4. The conveying unit includes one conveying drive unit and two conveying belts, The conveying drive unit includes one conveying driver, one conveying link member, and two drive wheels; The transport driver is mounted on the carrier plate and electrically connected to and controlled by the control module; The conveying driver is connected to the conveying link member, The two driving wheels are respectively connected to the conveying link members and correspond to the two guide rails, The two conveyor belts are wound around the two drive wheels and the two guide rails, respectively; The screw detection facility according to claim 1 , wherein the conveyor drive unit is capable of driving the two conveyor belts.

5. Each guide rail includes a guide rail base and a guide rail member installed on the guide rail base; The screw detection facility according to claim 4, wherein the two driving wheels are respectively installed on guide rail bases of the corresponding guide rails, and the conveyor belt is wound around the guide rail members of the corresponding guide rails.

6. Each guide rail includes a plurality of position regulating blocks that are respectively installed on the guide rail member and regulate the position of the conveyor belt corresponding to the guide rail, and a plurality of guide wheels that are respectively adjustably installed on the guide rail base and located at both ends of the guide rail member, The screw detection facility according to claim 5, wherein the two conveyor belts are wound around guide wheels of the corresponding guide rails, and the plurality of guide wheels abut against the corresponding conveyor belts.

7. The distance adjustment part is provided at the bottom of the carrier plate, and includes at least one distance rail, one adjustment actuator, one adjustment linkage member, and two connecting rods; the at least one distance rail is mounted on the carrier plate perpendicular to the linear direction; The two guide rails are each linearly movable on the at least one distance rail; The one adjustment actuator, the one adjustment linkage member, and the two connecting rods are connected in sequence; The two connecting rods pass through the carrier plate and are connected to the two guide rails, respectively; The screw detection equipment according to any one of claims 1 to 3, wherein the adjustment driver is electrically connected to the control module and controlled by the control module so as to be capable of operating the adjustment linkage member.

8. The upper visual detection mechanism includes an upper base, an upper light supplement, and an upper backlight plate; The upper base is provided on the carrier plate, the upper visual detection lens, the upper focal length control unit and the upper light supplement unit are disposed on the upper base; The upper light compensation section includes an upper light compensation moving member and an upper light compensation member, the upper light compensation moving member is electrically connected to and controlled by the control module; The upper light compensating moving member is connected to the upper light compensating member and is drivable to move the upper light compensating member up and down; The upper light-compensating member is located between the upper visual detection lens and the two guide rails of the mounting rail; the upper backlight plate is mounted on the mounting rail and located below the two guide rails; The screw detection arrangement according to any one of claims 1 to 3, wherein the position of the upper backlight plate corresponds to the upper visual detection lens.

9. The side visual detection mechanism includes a side base, a side lens moving part, and a side backlight plate; The side base is provided on the carrier plate, The lateral lens moving portion includes a lateral lens base and a base actuator; The side lens base is installed on the side base so as to be movable up and down; the base actuator is installed on the side base, electrically connected to the control module, and controlled to be driven so as to move the side lens base; The side visual detection lens and the side focal length control are disposed on the side lens base; the position of the side backlight plate corresponds to the side vision detection lens; The screw detection facility according to any one of claims 1 to 3, wherein the side backlight plate and the side visual detection lens are respectively located on both sides of the two guide rails.

10. The separating section of the main body includes a first discharge path, a second discharge path, and a blowing separating member, The first and second output paths are adjacent to an end of the mounting rail; The location of the first discharge path corresponds to an end of the mounting rail; The second discharge path is adjacent to the first discharge path, 4. The screw detection apparatus according to claim 1, wherein the blowing and separating member is connected to an external air source adjacent an end of the mounting rail and is electrically connected to and controlled by a control module.

Images