KR101301068B1 - Parts inspection system - Google Patents

Abstract

The parts sorting system according to the present invention includes a linear feeder unit for linearly transferring the coated screw supplied to the screw feeder unit; Photographing units arranged on both sides of the linear feeder; A monitoring unit for monitoring the coated screw taken by the photographing unit; If the coated screw read by the monitoring unit is determined to be defective, characterized in that it comprises a removal unit disposed at the end of the linear transfer unit for removing the defective.

Description

Parts inspection system

The present invention relates to a parts sorting system.

In general, the size, shape, coating, plating, thread pitch, damage of screws, etc. are used in parts such as bolts and screws having a head and a thread of a screw. Visual inspection was mainly done to check whether the test was done as desired.

In particular, the screw coating is a technique for processing the screw to have a locking function by applying a high-reactivity polymer adhesive or polyamide encapsulated in the threaded portion of the bolt.

Anti-loosening coatings are applied to all areas of the bolt industry, from large bolts in the construction / heavy industry, to medium-sized bolts in the automotive sector, and to small screws in the electronics sector.

To improve the locking and sealing function, the thread is coated. After the thread is coated, it is applied to the customer at the desired position, to the correct thickness, and to the correct thread size. In order to check whether the coating has been supplied to the desired screw size, the external inspection of the screw was performed manually and visually, and it is difficult to inspect all the mass-produced screws one by one (it takes a lot of time and manpower. In most cases, sampling inspection was performed rather than whole inspection, and this was the reason why most of the defects were not properly screened in advance.

In recent years, with the introduction of dedicated inspection equipment, there is a tendency for full inspection by this dedicated inspection equipment.

Conventional Korean Patent No. 10-1039099 "screw conveying device" includes a conveying disk provided with a receiving portion for receiving a screw on the outer circumference and rotates about the vertical axis, the receiving portion of the conveying disk It consists of a plurality of receiving grooves arranged to be spaced apart from each other along the outer periphery and the support portion on which the head of the screw inserted into the receiving groove on the receiving groove, the screw is received so as to hang on the receiving portion, the supporting portion is a screw conveyed by the conveying disk Screw conveying device is made so that the illumination light of the photographing device for photographing the transmission "is disclosed,

The screw is inserted only in a certain number of receiving grooves, and the filming device for capturing the screw photographs the screw head, and the support portion into which the screw head is inserted so that the illumination light is transmitted is used. It is made of transparent material,

Circular rotational motion causes centrifugal force, which makes it impossible to transfer more than a certain speed, and the receiving part is limited to a certain number, which limits the inspection of a large number of screws. It was unsuitable for checking the pitch.

The present invention, in order to solve the problems of the prior art, the screw head is mounted on the linear transfer device and does not have a specially defined receiving portion so that the entire linear feeder has a receiving portion on which the screw head is mounted, the photographing apparatus for photographing the thread It is an object to provide a transfer device for high speed screw coating sorting, by allowing it to be located on the side and / or top.

In addition, the purpose is to photograph the screw head shape and dimensions, as well as to select the external appearance of the screw thread, such as the pitch of the thread portion, whether the screw head is damaged, the size, the presence or absence of the thread, the shape of the screw.

According to an aspect of the present invention, there is provided a component sorting system for inspecting parts, comprising: a screw supply unit to which coated screws are supplied; A linear feeder unit for linearly transferring the coated screw supplied to the screw feeder unit; Photographing units arranged on both sides of the linear feeder; A monitoring unit for monitoring the coated screw taken by the photographing unit; If the coated screw read by the monitoring unit is determined to be defective, characterized in that it comprises a removal unit disposed at the end of the linear transfer unit for removing the defective.

In addition, according to the present invention, the screw supply unit is a hopper into which the screw to be tested is inserted; A bowl feeder on which the screw supplied through the hopper is stacked; A bowl feeder detector for detecting the screw stacked on the bowl feeder; A linear feeder in which the head of the screw is aligned to supply the screw supplied to the upper portion of the bowl feeder along the spiral track formed in the bowl feeder to the linear feeder; It characterized in that for supplying the screw aligned in the linear feeder to the linear transfer unit.

In addition, according to the present invention, the bowl feeder detector is installed spaced apart from the upper center of the bowl feeder, and includes a vertical rod and the body portion, the vertical rod and the body portion is coupled to the hinge form, the screw laminated to the bowl feeder By measuring the angle formed by the vertical rod and the body portion is characterized in that for determining the supply of the screw to the bowl feeder.

In addition, according to the present invention, the linear feeder unit is a belt portion to which the screw supplied from the linear feeder is transferred, the first rotary wheel and the second rotary wheel spaced from each other wound around the belt portion to rotate the belt portion Wherein the belt portion includes two spaced belt belts, wherein the screws aligned in the straight feeder are supplied to the two spaced belt belts through the straight feeder, so that the spaces of the spaced belt belts are spaced apart from each other. The screw head of the screw is over, the threaded portion of the screw is located through the separation space, and when the screw spanning the belt belt rotates between the first wheel and the second wheel, It is characterized in that the conveyed along the upper portion of the belt.

In addition, according to the present invention, the photographing unit is located between the first rotation wheel and the second rotation wheel, the photographing apparatus arranged on both sides or the upper portion of the belt belt so as to be able to photograph the screw across the belt belt; Luminaires arranged on both sides of the belt-shaped belt for supplying light to the screw so as to determine a coating coated on the threaded portion of the screw;

A screw detection sensor arranged on both sides of the belt belt, and detecting a point of time when the screw passes through the photographing apparatus while being conveyed by the belt belt, so as to photograph the screw; And a cover unit for accommodating the photographing apparatus, the luminaire, and the screw sensor, and configured of a light blocking member.

According to the present invention, the removal unit includes a guide and a removal member,

The removal member may be transported along the guide so as to be positioned vertically below the second rotating wheel, and when the screw read by the monitoring unit is determined to be a defective article, the screw determined as the defective article is stored in a defective article. The removal member is transported along the guide to be transported to the space.

In addition, according to the present invention, the monitoring unit is a predetermined value and the photographed value of the feed speed control unit for controlling the feed rate of the linear feeder unit and the shape, dimensions, color of the thread coating portion of the screw taken by the photographing unit It characterized in that it comprises a reading unit for reading a defective product in comparison with.

In addition, according to the present invention, the monitoring unit is characterized in that it comprises a calculation unit for calculating the time until the screw reaches the second rotation wheel to reach the second rotation wheel to fall off the belt-shaped belt.

According to the present invention, the monitoring unit includes a removal member movement control unit for controlling the removal member to be positioned vertically spaced apart from the second rotation wheel along the guide at the moment when the screw calculated by the operation unit falls. Characterized in that.

The conveying apparatus for inspecting parts according to the present invention has a screw head mounted on a straight conveying apparatus, and the conveying apparatus is a straight conveying apparatus, so that the conveying speed is fast, and the screw head is conveyed between two belts of the conveying apparatus so that the space between the belts All of them are the receiving parts of the screw, so there is no limit on the number of screw feeding as well as continuous feeding, and it is suitable for large quantity screw feeding. By photographing by the photographing device, the coating of the threaded portion, the pitch of the threaded portion, the presence or absence of the threaded thread, etc. can be easily determined.

1 is a component sorting system according to the present invention.
2 is an enlarged view of a screw supply unit according to the present invention.
3A and 3B are enlarged views of the linear feeder unit according to the present invention.
4 is an enlarged view of a photographing unit according to the present invention.
5 is an image of a screw photographed on a monitoring unit according to the present invention.
6 is an enlarged view of a removal unit according to the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. First, it should be noted that the same components or parts among the drawings denote the same reference numerals whenever possible. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted so as not to obscure the subject matter of the present invention.

1 shows a part sorting system 1 according to the invention.

As shown in FIG. 1, the parts sorting system 1 according to the present invention includes a screw supply unit 100, a linear feeder unit 200, a photographing unit 300, a removing unit 400, a monitoring unit ( 500).

Parts in the present invention means all products having a head and a threaded portion, such as screws, bolts, described below based on the screw, but is not limited thereto,

In addition, the coating of the threaded portion and the pitch of the threaded portion, the damage of the screw head, dimensions, the presence or absence of the thread, the inspection of the shape of the screw is described, but also applicable to the plating of the threaded portion and does not depart from the scope of this right.

2 is an enlarged view of the screw supply unit 100 according to the present invention.

As shown in FIG. 2, the screw supply device 100 according to the present invention includes a hopper 110, a bowl feeder 120, a straight feeder 130, and a bowl feeder detector 140.

The upper end of the hopper 110 is formed with a screw inlet 111 for inserting the screw to be inspected, the upper and lower narrowing, that is, the top entrance is a wide funnel shape so that the screw is smoothly inserted, the screw introduced through the screw inlet 111 Is discharged through the screw supply unit 112 formed on the side of the hopper 110 is spaced apart from the screw supply unit 112 and supplies the screw to the bowl feeder 120 installed below.

The bowl feeder 120 is a spiral track 121 is formed along the inner wall, is formed to be inclined toward the upper, so that the bowl feeder so that the screw supplied to the inside of the bowl feeder 120 can rise upward along the spiral track ( A vibration device is attached to the vibration device 120 to generate continuous vibrations, and the vibrations of the screw are raised to the top of the bowl feeder 120 along the inclined surface of the spiral track 121.

When it comes up to the upper side wall of the bowl feeder 120 along the spiral track 121, it is connected to the straight feeder 130 is installed at the end, the straight feeder 130 is a form in which two straight plates are arranged side by side and parallel The head of the screw is placed in the spaced apart space.

As the protrusion formed on the upper sidewall of the bowl feeder collides with the screw, the screw that is not placed on the straight plate of the straight feeder 130 enters into the bowl feeder 120 again.

That is, the screws are supplied to the spaced space between two parallel plates of the straight feeder 130 and are transported along the straight feeder 130.

The straight feeder 130 is formed to be inclined so that the screw can flow down.

The bowl feeder detector 140 may be installed at the center of the bowl feeder 120 to measure the stacking amount of the screw supplied from the hopper 110 to the bowl feeder 120.

The bowl feeder deductor 140 measures the height of the bowl feeder 120 in the sensor unit to determine the stacking amount of screws, and determines whether additional supply of screws from the hopper 110 is necessary.

As shown in Figure 2, the bowl feeder deductor 140, the vertical rod 141 and the body portion 142 is coupled in a hinged form, the vertical rod 141 by a screw laminated to the bowl feeder 120 When the predetermined angle is inclined, the sensor for sensing the vertical section of the vertical bar 141 on the body portion 142 detects that the vertical bar is inclined, and the vertical bar is inclined so that the screw is stacked on the bowl feeder 120. Since the hopper 110 means that the screw does not need to be supplied anymore, the screw supply through the hopper 110 is suspended.

In addition, when the vertical bar 141 is standing vertically, it means that the screw is not laminated to the bowl feeder 120, the sensor of the body portion 142 detects this to resume the screw supply through the hopper 110 Let's do it.

3a and 3b are enlarged views of the linear transfer device according to the present invention.

As shown in Figure 3a and 3b, the linear transfer device 200 according to the present invention is a belt unit 210, the first rotary wheel 220, the second rotary wheel 230, the power transmission device 240 , And frame 250.

The screw head is placed in the spaced apart space to the straight feeder 130, and the threaded portion protrudes between the spaced spaces and the screws descended along the inclined straight feeder 130 in the vertically downward position are adjacent to the ends of the straight feeder 130. However, it is transmitted to the belt portion 210 spaced apart.

The first rotary wheel 220 rotates on the first rotary shaft 221, and the power transmission device 240 is connected to the first rotary shaft 221.

The first rotary shaft 221 and the power transmission device 240 are connected by a chain in the drawing, but is not limited thereto.

The first rotary shaft 221 penetrates the first support 222, and the first support 222 is fixed to the frame 250.

Similarly, the second rotary wheel 230 rotates on the first rotary shaft 221, the second rotary shaft 231 penetrates the second support 232, and the second support 232 is mounted on the frame 250. Combined.

The belt unit 210 is composed of two belt-shaped belts, and is wound around the first rotary wheel 220 and the second rotary wheel 230 to rotate.

Since the first rotary wheel 220 transmits the power of the power transmission device 240 through the first rotary shaft 221, the outer circumferential surface of the first rotary wheel 220 so as to easily perform the role of rotating the belt unit 210. The protrusion is formed to cause contact friction with the belt portion (210).

The second rotary wheel 230 has a step 234 formed so that the outer side is higher than the inner side where the belt-shaped belt is wound on the outer circumferential surface of the second rotary wheel 230 so that the two belt-shaped belts rotate smoothly without being separated outward. It is.

The two belt-shaped belts of the belt portion 210 are spaced apart from each other by a predetermined interval, and the screw supplied from the straight feeder 130 is inserted between the two belt-shaped belts spaced apart, the threaded portion penetrates, and the screw heads are two belt-shaped. The threaded portion is caught by the belt so that the threaded portion spans the belt portion 210 in a vertical downward direction.

Since the screw size varies, only two belt belts can be adjusted to allow for various screw feeds.

Therefore, the linear transfer device 200 according to the present invention, the first rotary wheel 220 and the second rotary wheel to be able to adjust the separation space of the two belt-shaped belt of the belt unit 210 according to the specifications of the various screws. Both of the two wheels 230 are divided, and the distance between the two wheels is adjustable.

The separation distance between the two divided wheels of the first rotary wheel 220 is adjusted while the first left and right transfer unit 223 formed on the first rotary shaft 221 is moved left and right, and the division of the second rotary wheel 230 is similarly performed. The separation distance between the two wheels is adjustable while the second left and right transfer part 233 formed on the second rotating shaft 231 is moved left and right.

In addition, an upper guide 251 for guiding these belt-shaped belts and maintaining a gap between the belt-shaped belts between the first and second rotary wheels 220 and 230 of the two belt-shaped belts of the belt unit 210. The lower guide 252 is fixed to the frame 250 is installed.

The upper guide 251 supports and guides the upper portions of the two belt-shaped belts, helps to keep the interval between the two belt-shaped belts constant, and horizontal movement is possible to adjust these gaps.

In order to precisely adjust the distance of the horizontal movement interval of the left and right, a measurer 253 is installed at one side of the upper guide 251.

In addition, the upper guide 251 is also available in Shanghai East to adjust the vertical height of the two belt-shaped belt.

The lower guide 252 supports and guides the lower portions of the two belt-shaped belts, helps to maintain a constant gap between the two belt-shaped belts, and horizontal movement is possible to adjust these gaps.

The upper guide 251 has two divided surfaces to guide two belt belts respectively, and these two divided surfaces can adjust the separation distance, and by adjusting these gaps, the gap of the belt belt according to the size of the screw can be adjusted. It is easy.

Similarly, the lower guide 252 also has two dividing surfaces, and these two dividing surfaces can adjust the separation distance and adjust the spacing to easily adjust the gap of the belt-shaped belt according to the specification of the screw.

The second support 232 is hinged to the frame 250 is rotatable at an angle, which is the second support when the belt portion 210 is installed on the first rotating wheel 220 and the second rotating wheel 230. By hinge hinge 232 to move the second rotary shaft 231 closer to the first rotary shaft 221, the belt 210 can be easily connected to the first rotary wheel 220 and the second rotary wheel 230. Help install

In addition, the tension of the belt unit 210 is changed as the linear feeder unit 200 is continuously used, and the second support shaft 232 is rotated by a predetermined angle, such that the second rotary shaft 231 and the first rotary shaft ( The changed tension can be easily adjusted by varying the distance of 221.

4 is an enlarged view of a photographing unit according to the present invention.

As shown in FIG. 4, the photographing unit 300 according to the present invention includes a photographing apparatus 310, a lighting device 320, a screw sensor 330, and a cover 340.

The photographing unit 300 is fixed to the frame 250 and is provided on both sides with the frame 250 interposed therebetween.

That is, the photographing unit 300 is positioned at both sides with the belt unit 210 interposed therebetween by photographing the screws transferred along the belt unit 210 with the photographing apparatus 310 arranged at both sides thereof, so that the coating can be made by the user. To determine if it worked as desired.

When the belt-shaped belt of the belt unit 210 rotates between the first rotary wheel 220 and the second rotary wheel 230, the head of the screw is placed in the separation space between the two belt-shaped belt so that the screw moves straight. The threaded portion penetrated between the spaced spaces is exposed to the outside and can be observed.

The monitoring unit 500 reads whether the externally exposed thread is photographed from both sides by the photographing apparatus 310 and whether the coating is made at a predetermined position of the thread, which is preset by the user, and whether the screw has been supplied with a predetermined standard. , If the screw is not a predetermined standard, or the coating is not the position of the predetermined threaded portion, the screw determined as defective in the removal unit 400 is removed.

The photographing apparatus 310 is fixed to the frame 250 by the camera support 311, and the camera support 311 is capable of vertically moving and moving the height so that the photographing apparatus 310 can photograph the threaded portion, and According to the specification, it is also possible to feed left and right for precise focusing distance adjustment.

Like the photographing apparatus 310, the luminaire 320 is provided in plural on both sides of the belt unit 210 so that the shadow is not generated when the screw is transferred along the belt unit 210, and the luminaire 320 for this purpose. ) Is installed closer to the belt portion 210 than the photographing apparatus 310.

The screw sensor 330 is installed on both sides of the belt portion 210, the light generating portion and the light receiving portion is divided, the moment the light is not received in the light receiving portion by the screw conveyed along the belt portion 210 Since the screw passes through the imaging device 310, the imaging device 310 operates at this moment.

That is, when the screw detection sensor 330 detects the passage of the screw, the signal is transmitted to the photographing apparatus 310 and the photographing is performed by the photographing apparatus 310, and the photographed image is transmitted to the monitoring unit 500 and read. .

The photographing apparatus 310, the luminaire 320, and the screw sensor 330 are accommodated in the cover 340, and the cover 340 is a light blocking member that blocks external light.

This is to prevent an error in reading from the monitoring unit 500 by photographing the external light or an external image when the photographing apparatus 310 photographs the threaded portion.

5 is an image of a screw photographed on a monitoring unit according to the present invention.

As shown in FIG. 5, the monitoring unit 500 according to the present invention displays photographs taken by the photographing apparatus 310 of both sides of the screw transferred along both sides of the belt unit 210.

The reading unit included in the monitoring unit 500 reads whether the preset screw specification matches the photographed screw standard, and the coating portion of the preset thread portion and the coating portion of the photographed thread portion and the coating on both thread portions. If a match is read, if it is matched, it is classified as a genuine product, and if there is a mismatch, it is read as a defective product, and a control unit 400 removes the defective product by transmitting a defective product removal signal to the removal unit 400.

6 is an enlarged view of a removal unit according to the present invention.

As shown in FIG. 6, the removal unit 400 according to the present invention includes a guide 410 and a removal member 420.

The screw conveyed along the belt-shaped belt of the belt part 210 leaves the belt part 210 at the end of the second rotating wheel 230 and falls downward to recover the screw after the inspection.

When it is determined that the monitoring unit 500 is a regular product, it is dropped downward as it is and stored in the regular product storage space,

When it is determined that the defective product, the screw conveyed along the belt-shaped belt is separated from the belt portion 210 at the end of the second rotary wheel 230, the moment it falls downward, the guide 410 fixed to the frame 250 Accordingly, the removal member 420 is transferred, so that the defective product is transferred along the removal member 420 and stored in the defective storage space.

The removal member 420 may be an accommodation space in which defective products are stored as it is, or may serve only to guide the defective products to the storage space.

The removal member 420 captures the moment when the screw of the defective product leaves the belt unit 210 at the end of the second rotating wheel 230 along the guide 410, which is transferred to the monitoring unit 500. By determining and setting a time at which the screw of the defective product reaches and disengages to the end of the second rotary wheel 230, the defective product is transferred according to the determination of the defective product and the preset time difference to remove the defective product.

7 is a block diagram of a component selection system according to the present invention.

As shown in FIG. 7, the component selection system 1 according to the present invention includes a screw supply unit 100, a linear transfer unit 200, a photographing unit 300, a removing unit 400, and a monitoring unit ( 500),

In particular, the monitoring unit 500 is a feed speed control unit 510 for controlling the feed speed of the linear feeder unit 200, the screw head shape and dimensions taken by the photographing unit 300, the pitch of the threaded portion, damage of the screw head The reading unit 520 for reading out defective products according to whether or not the thread is present, the shape of the coating portion of the thread and matching with the preset value, and if the screw read out from the reading unit 520 is defective, Removal member movement control unit 530 for moving the removal member 420 of the removal unit 400 to move along the guide 410 to be positioned vertically spaced apart from the second rotary wheel 230 to remove, and shooting It includes a calculation unit 540 for calculating the time the screw reaches from the unit 300 to the end of the second rotary wheel 230 in accordance with the feed rate of the linear transfer device unit 200.

In the feed speed controller 510, the rotation speed of the power transmission device 240 is varied to change the rotation speed of the first rotation shaft 220, thereby changing the rotation speed of the first rotation wheel 220. The rotation speed of the belt-shaped belt rotating in the first rotary wheel 220 and the second rotary wheel 230 is variable.

Through this, the feed speed of the screw placed on the upper end of the belt belt is variable.

Increasing the feed speed of the screw improves the inspection efficiency as it increases, and when the feed rate is changed, defects must be accurately selected and removed according to the change of the feed rate. Through the reading unit 520 and the movement control unit 530 is possible.

The reading unit 520 stores a predetermined screw dimension value, a position value of the coating portion of the predetermined screw thread, the stored preset screw dimension value and the dimension value of the screw photographed from the photographing apparatus 310, and the photographed screw thread. Compare the position values of the coating parts of the, if any of them are inconsistent, classify them as defective,

If they match, they are classified as regular goods.

At this time, it is possible to set the threshold values of the coincidence and inconsistency so as to read out the coincidence within the threshold range, and if out of the threshold value, read them as mismatch and classify them as defective.

If it is determined that the defective part in the reading unit 520, a signal is transmitted to the movement control unit 530, the removal member 420 in the movement control unit 530 along the guide 410 at the lower end of the second rotary wheel 230 When the control unit is positioned so that the defective article is moved along the removal member 420, the removal member 420 is returned to its original position.

In order to be precisely controlled to remove only the defective product through the removal member 420, in the operation unit 540, the screw taken from the photographing apparatus 310 reaches the second rotation wheel 230 to fall off the belt-shaped belt and fall. The exact time to the moment is calculated,

This is because the total travel time is calculated by dividing the distance (L) from the imaging device 310 to the tangent of the belt-shaped belt by the linear speed Vt of the belt-shaped belt.

The removal member movement control unit 530 may transfer the removal member 420 to correspond to the total time required.

This removes only screws that are precisely defective.

While the invention has been shown and described in connection with specific embodiments thereof, it is conventional in the art that various changes, modifications and variations are possible without departing from the spirit and scope of the invention as indicated by the appended claims. Anyone who knows the knowledge of is easy to know.

1: parts sorting system
100: supply unit 110: hopper
111: screw inlet 112: screw feed section
120: bowl feeder 121: spiral track
130: linear feeder 140: bowl feeder detector
141: vertical rod 142: body portion
200: linear feeder portion 210: belt portion
220: first rotating wheel 221: first rotating shaft
222: first support 223: second left and right transfer unit
230: second rotating wheel 231: second rotating shaft
232: second support 233: second left and right transfer unit
240: power train 250: frame
251: upper guide 252: lower guide
300: photographing unit 310: photographing apparatus
311: camera support 320: lighting fixture
330: screw sensor 340: cover
400: removal unit 410: guide
420: removal member 500: monitoring unit
510: feed rate control unit 520: reading unit
530: removal member moving control unit 540: calculating unit

Claims (9)

In the parts sorting system for parts inspection,
A screw supply unit to which coated screws are supplied;
A linear feeder unit for linearly transferring the coated screw supplied to the screw feeder unit;
Photographing units arranged on both sides of the linear feeder;
A monitoring unit for monitoring the coated screw taken by the photographing unit;
If the coated screw read by the monitoring unit is determined to be defective, and includes a removal unit disposed at the end of the linear transfer unit for removing the defective product,
The screw supply unit is a hopper into which the screw to be inspected is inserted;
A bowl feeder on which the screw supplied through the hopper is stacked;
A bowl feeder detector for detecting the screw stacked on the bowl feeder;
A linear feeder in which the head of the screw is aligned to supply the screw supplied to the upper portion of the bowl feeder along the spiral track formed in the bowl feeder to the linear feeder;
And supplying the screws aligned in the linear feeder to the linear feeder unit. delete The method of claim 1,
The bowl feeder detector is installed spaced apart from the center of the bowl feeder,
It includes a vertical rod and body portion,
The vertical rod and the body portion is coupled to the hinge form, by measuring the angle formed by the vertical rod and the body portion by the screw laminated to the bowl feeder to determine the supply of the screw to the bowl feeder system. The method of claim 1,
The linear feeder unit is a belt unit for conveying the screw supplied from the linear feeder,
A first rotary wheel and a second rotary wheel spaced apart from each other wound on the belt unit to rotate the belt unit,
The belt portion includes two spaced belt belts,
The screws aligned in the straight feeder are supplied through the straight feeder to the two spaced belt belts, so that the screw heads of the screws span the spaced spaces of the spaced belt belts and penetrate the spaces. The thread of the screw is located,
And said screw spanning said belt belt is conveyed along an upper portion of said belt belt as it rotates between said first and second rotary wheels. 5. The method of claim 4,
The photographing unit is located between the first rotary wheel and the second rotary wheel,
An imaging device arranged on both sides or top of the belt-like belt to photograph the screw spanning the belt-shaped belt;
Luminaires arranged on both sides of the belt-shaped belt for supplying light to the screw so as to determine a coating coated on the threaded portion of the screw;
A screw detection sensor arranged on both sides of the belt belt, and detecting a point of time when the screw passes through the photographing apparatus while being conveyed by the belt belt, so as to photograph the screw;
And a cover part for accommodating the photographing apparatus, the luminaire, and the screw sensor, and including a light blocking member. 5. The method of claim 4,
The removal unit includes a guide and a removal member,
The removal member is transportable along the guide to be positioned vertically spaced apart from the second rotary wheel,
And when the screw read by the monitoring unit is determined to be a defective product, the removing member is transferred along the guide so that the screw determined as the defective product is transferred to the defective storage space. The method according to claim 6,
The monitoring unit reads the defective product by comparing the preset value of the shape and dimensions of the screw thread of the screw photographed by the photographing unit and the photographed value with the photographed value of the feed rate controller for controlling the feed rate of the linear feeder unit. Component selection system comprising a readout. The method of claim 7, wherein
The monitoring unit comprises a calculation unit for calculating the time until the moment when the screw taken from the photographing unit reaches the second rotation wheel to fall off the belt-shaped belt falling. 9. The method of claim 8,
The monitoring unit includes a removal member movement control unit for controlling the removal member to be positioned vertically spaced apart from the second rotary wheel along the guide at the moment the screw calculated by the calculating unit falls. Screening system.

Images