KR102323547B1 - Bolt Coating Inspection Device - Google Patents

Abstract

The present invention relates to a device for inspecting whether the coating of a bolt is defective. The device comprises: an injection unit which accommodates the bolt and transfers the bolt to a set potion for inspection; a first transfer unit connected to the injection unit while having a stepped portion of a set height and configured to align and transfer the transferred bolt; a second transfer unit connected to the first transfer unit while having a stepped portion of a set height and configured to transfer the bolt transferred through the first transfer unit in a vertical state for inspection; an inspection unit installed on a portion of the second transfer unit and configured to inspect the bolt transferred through the first transfer unit; a sorting unit installed at a distal end of the second transfer unit and interlocked with the inspection unit to sort the bolt in accordance with whether the coating in the bolt transferred from the second transfer unit is defective; and a controller connected to the injection unit, the first transfer unit, the second transfer unit, the inspection unit, and the sorting unit, respectively, and configured to control the operation of the injection unit, the first transfer unit, the second transfer unit, the inspection unit, and the sorting unit. In accordance with the present invention, the time and costs required for determining whether the coating is defective can be reduced.

Description

Bolt Coating Inspection Device

The present invention relates to a bolt coating inspection apparatus, and more particularly, to a bolt coating inspection apparatus for automatically inspecting and selecting whether the bolt coating is defective.

In general, the screw is maintained by the contact friction force of the thread surface caused by the contact between the thread surface of the bolt and the nut. The screw is loosened by repetition.

The most common type of anti-loosening screw is a washer that prevents loosening by increasing the friction force of the screw head. will be.

As another type of anti-loosening screw, a method of fusion coating a part or all of the pitch portion of the screw with an anti-loosening powder composition containing nylon resin powder in a manner to improve the frictional force of the pitch portion of the screw, and a micro-filled adhesive composition There is a method of coating a part or the whole of the pitch portion of the screw with an anti-loosening adhesive composition comprising a capsule.

The method of fusion coating a part or all of the pitch part of the screw with the anti-loosening powder composition containing the nylon resin powder is to generate a strong frictional force in the pitch part using the elastic repulsive force of the nylon resin to prevent loosening of the screw, and adhesion In the method of coating a part or all of the pitch portion of the screw with the anti-loosening adhesive composition comprising the microcapsule filled with the composition, the adhesive composition filled in the microcapsule bursts out when the screw is fastened, and the gap between the pitch portion of the bolt and the nut After a certain amount of time (curing time of the adhesive composition) has elapsed, the seal is fixed to prevent loosening of the screw.

However, in recent years, with the trend of miniaturization of electronic communication parts, etc., the size of the screw for fastening the parts is also very small, and accordingly, the number of threads and valleys formed in the pitch portion of the screw is reduced, and the fastening force of the screw It will also become smaller in proportion to the number of threads and valleys.

In addition, in order to improve the fastening force of the screw and prevent the loosening of the screw, the anti-loosening powder composition containing the above-described nylon resin powder is coated on a part or the entire pitch of the screw by fusion coating, or a micro Although a method of separately coating a part or all of the pitch portion of the screw with an anti-loosening adhesive composition including a capsule is employed, it is a situation that does not sufficiently provide the fastening force of the screw required in recent precision small products.

In particular, the method of fusion coating a part or all of the pitch portion of the screw with the anti-loosening powder composition containing the nylon resin powder is limited in improving the fastening force of the screw because the anti-loosening function of the screw depends only on the elastic repulsive force of the nylon resin. In the method of coating part or all of the pitch part of the screw with an anti-loosening adhesive composition containing microcapsules filled with the adhesive composition, at least the curing time of the adhesive composition (about 72 hours) has elapsed after tightening the screw. Since the fastening force can be improved, it is not possible to prevent the screw loosening due to vibration or impact generated before the curing time of the adhesive composition elapses. It has the disadvantage that it cannot be reused after it is released.

Therefore, it is essential to check whether the screw coating is defective as described above. Conventionally, it is mainly done manually, which increases the cost due to the increase in labor costs, increases the fatigue level due to simple repetitive work, increases the selection error, and it is difficult to secure the operation. There is a problem that the production speed is lowered by the process, so an automated equipment to replace the manpower is needed.

Republic of Korea Patent Publication No. 10-2011-0003207 Republic of Korea Patent Publication No. 10-2008-0040552

Accordingly, the present invention has been devised to solve the above problems, and an object of the present invention is to provide a bolt coating inspection apparatus having a function capable of automatically selecting defective coated bolts.

However, the technical problems to be achieved in the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned are clearly to those of ordinary skill in the art to which the present invention belongs from the description below. can be understood

The present invention was created to improve the problems of the prior art as described above, as an apparatus for inspecting whether a bolt coating is defective, an injection unit receiving the bolt and transferring the bolt to a set position for inspection; a first transfer unit connected to the injection unit by a step of a set height and transferring the transferred bolts while aligning; a second transfer unit connected to the first transfer unit by a step difference of a set height and transferred in a vertical state for inspection of the bolt transferred through the first transfer unit; an inspection unit installed in a portion of the second transfer unit to inspect the bolt transferred through the first transfer unit; a sorting unit installed at the distal end of the second transfer unit and interlocked with the inspection unit to sort the bolts according to whether the bolt coating transferred from the second transfer unit is defective; and a controller connected to the injection unit, the first transfer unit, the second transfer unit, the inspection unit and the sorting unit to control the operation of the injecting unit, the first transfer unit, the second transfer unit, the test unit, and the sorting unit. may include.

In addition, the injection unit, the bolt is accommodated and the distal end is manufactured in a tapered shape to guide the receiving guide for guiding the transfer direction of the bolt; a first conveyor installed under the accommodating guide to transport the bolts accommodated in the accommodating guide in a set direction; and a first support installed under the first conveyor to support the first conveyor.

In addition, the first transfer unit may include: a first transfer guide installed in an inclined state at the distal end of the injection unit to guide the transfer direction of the bolt; an alignment guide connected to the first transfer guide and manufactured with a width corresponding to the diameter of the bolt to align the bolt in the longitudinal direction; a second conveyor installed under the alignment guide to transport the bolts accommodated in the alignment guide in a set direction; and a second support installed under the second conveyor to support the second conveyor.

In addition, the second transfer unit, a second transfer guide installed in an inclined state at the end of the first transfer unit to guide the transfer direction of the bolt; a conveyor module connected to the second transfer guide and installed in parallel while being spaced apart by a set distance to transfer the bolt head while being caught; and a third support installed under the conveyor module to support the conveyor module.

In addition, the inspection unit, a camera installed on a part of the second transfer unit to photograph the bolt; and a discriminator that analyzes the coating condition of the bolts photographed with the camera and determines whether the bolt coating is defective according to whether a set standard is passed.

In addition, the sorting unit may include: a cradle that receives and mounts the bolts transferred from the second transfer unit and has both ends in the longitudinal direction open; a tilting device installed under the cradle and connected to the inspection unit to tilt the cradle in a set direction according to whether the bolt coating is defective through information received from the inspection unit; and discharge guides installed on both sides of the opening of the cradle to induce discharge of the bolts selected through the tilting machine.

According to an embodiment of the present invention, by using the injection unit, the first and second transfer units and the inspection unit, the surface of the coated bolt is inspected under the control of the controller according to the program set by the inspection unit to determine whether the coating is defective, and the sorting unit It is possible to secure accuracy while saving time and cost by sorting through the

However, the effects obtainable in the present invention are not limited to the above-mentioned effects, and other effects not mentioned will be clearly understood by those of ordinary skill in the art to which the present invention belongs from the following description. will be able

The following drawings attached to this specification illustrate preferred embodiments of the present invention, and serve to further understand the technical spirit of the present invention together with the detailed description of the present invention to be described later, so the present invention is described in such drawings It should not be construed as being limited only to
1 is a perspective view of a bolt coating inspection apparatus according to an embodiment of the present invention.
2 is a plan view of a bolt coating inspection apparatus according to an embodiment of the present invention.
Figure 3 is an elevation view of the bolt coating inspection apparatus according to an embodiment of the present invention.
4 is a block diagram of component control of the controller.

Hereinafter, with reference to the accompanying drawings, embodiments of the present invention will be described in detail so that those of ordinary skill in the art can easily carry out the present invention. However, since the description of the present invention is merely an embodiment for structural or functional description, the scope of the present invention should not be construed as being limited by the embodiment described in the text. That is, since the embodiment may have various modifications and may have various forms, it should be understood that the scope of the present invention includes equivalents capable of realizing the technical idea. In addition, since the object or effect presented in the present invention does not mean that a specific embodiment should include all of them or only such effects, it should not be understood that the scope of the present invention is limited thereby.

The meaning of the terms described in the present invention should be understood as follows.

Terms such as “first” and “second” are for distinguishing one component from another, and the scope of rights should not be limited by these terms. For example, a first component may be termed a second component, and similarly, a second component may also be termed a first component. When a component is referred to as being “connected” to another component, it may be directly connected to the other component, but it should be understood that other components may exist in between. On the other hand, when it is mentioned that a certain element is "directly connected" to another element, it should be understood that the other element does not exist in the middle. Meanwhile, other expressions describing the relationship between elements, that is, “between” and “immediately between” or “neighboring to” and “directly adjacent to”, etc., should be interpreted similarly.

The singular expression is to be understood as including the plural expression unless the context clearly dictates otherwise, and terms such as "comprises" or "have" refer to the described feature, number, step, action, component, part or these It is intended to indicate that a combination exists, and it should be understood that it does not preclude the possibility of the existence or addition of one or more other features or numbers, steps, operations, components, parts, or combinations thereof.

All terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, unless otherwise defined. Terms defined in the dictionary should be interpreted as being consistent with the meaning of the context of the related art, and cannot be interpreted as having an ideal or excessively formal meaning unless explicitly defined in the present invention.

1 is a perspective view of a bolt coating inspection apparatus according to an embodiment of the present invention, FIG. 2 is a plan view of a bolt coating inspection apparatus according to an embodiment of the present invention, and FIG. 3 is a bolt according to an embodiment of the present invention. It is an elevation view of the coating inspection apparatus, and FIG. 4 is a block diagram of component control of the controller.

1 to 4, as an apparatus for inspecting whether the bolt coating is defective, the present invention provides an injection unit 100, a first transfer unit 200, a second transfer unit 300, an inspection unit ( 400), a selection unit 500 and a controller 600 may be included.

The injection unit 100 accommodates the bolt 30 and may transfer the bolt 30 to a set position for inspection.

The injection unit 100 may include a receiving guide 110 , a first conveyor 120 , and a first support 130 .

The accommodation guide 110 accommodates the bolt 30 , and the distal end thereof is manufactured in a tapered shape to guide the transfer direction of the bolt 30 .

The first conveyor 120 may be installed under the accommodation guide 110 to transport the bolt 30 accommodated in the accommodation guide 110 in a set direction.

The first support 130 may be installed under the first conveyor 120 to support the first conveyor 120 .

The first transfer unit 200 may be transferred while aligning the transferred bolts 30 connected to the injection unit 100 by a step of a set height.

The first transfer unit 200 may include a first transfer guide 210 , an alignment guide 220 , a second conveyor 230 , and a second supporter 240 .

The first transfer guide 210 may be installed in an inclined state at the distal end of the injection unit 100 to guide the transfer direction of the bolt 30 .

The alignment guide 220 is connected to the first transfer guide 210 and is manufactured to have a width corresponding to the diameter of the bolt 30 to align the bolt 30 in the longitudinal direction. Specifically, the alignment guide 220 may be manufactured so that the width can be adjusted according to the types of various bolts or screws. can be

The second conveyor 230 may be installed under the alignment guide 220 to transport the bolt 30 accommodated in the alignment guide 220 in a set direction.

The second support 240 may be installed under the second conveyor 230 to support the second conveyor 230 .

The second transfer unit 300 is connected to the step of the set height to the first transfer unit 200 and can be transferred in a vertical state for inspection of the bolts 30 transferred through the first transfer unit 200. .

The second transfer unit 300 may include a second transfer guide 310 , a conveyor module 320 , and a third support 330 .

The second transfer guide 310 is installed in an inclined state at the end of the first transfer unit to guide the transfer direction of the bolt.

Conveyor module 320 is connected to the second transfer guide and is installed in parallel as a pair is spaced apart by a set distance to transfer the bolt head while being caught.

The third support 330 may be installed under the conveyor module 320 to support the conveyor module 320 .

The inspection unit 400 may be installed in a portion of the second transfer unit 300 to inspect the bolt 30 transferred through the first transfer unit 200 .

The inspection unit 400 may include a camera 410 and a discriminator 420 .

The camera 410 may be installed on a part of the second transfer unit 300 to photograph the bolt 30 . The discriminator 420 may determine whether the coating of the bolt 30 is defective according to whether a standard (ie, coating thickness, etc.) passed by analyzing the coating condition of the bolt 30 photographed with a camera.

In other words, it is possible to inspect whether the bolt coating is defective by using a camera or a vision inspector. Specifically, the inspection principle of the vision inspector is to read/detect the white pixel among the pixels of the image taken by the vision camera to determine pass/fail, (White Pixel) RGB 20 or higher is judged as white pixel (binary is used), shooting and image synthesis/analysis using line scan type (existing 20K line shooting), (based on crack), 3 white pixels in 1 photo If there are more than one, it can be judged as a crack.

In the inspection method of the vision inspection machine, light is irradiated from the inside of the welding part through illumination, the light leak from the opposite side is determined by vision, and the welding part is divided into 5 parts to perform inspection and determination of each division area.

Here, the vision sensor of the vision inspector identifies and inspects an object and exchanges the acquired information with other systems, thereby increasing product productivity and can be used to produce a product of a certain quality. Vision sensors (and systems that contain them) can perform complex and repetitive tasks quickly, accurately and consistently. In addition to these inspection tasks, there may be various fields in which vision sensors are used. For example, it may be used in a robot in the process of sorting parts or used to place parts and the like. This can be done by acquiring an image through a vision sensor and analyzing it by the system.

The vision sensor may require high resolution in order to identify or select an object, and the performance of the vision sensor may depend on high optical performance. Recently, many studies have been made to improve the optical performance of a vision sensor.

That is, the vision sensor may be installed on a production facility or a production line, and may acquire an image for determining the state of a certain area or product. The optical properties of a vision sensor can have a significant impact on the sensor's performance. This may mean that if the optical characteristics of the vision sensor are degraded, the quality of a result obtained by the vision sensor may be degraded even if the sensitivity or resolution of the image sensor provided inside the vision sensor is high.

In addition, the inspection unit 400 is installed in a part of the conveyor module 320, the head is caught in the central space formed by the conveyor module 320, the bolt 30 transferred in a vertical state can be photographed or inspected, At this time, the camera 410 or the vision inspector can be installed using brackets on both sides of the conveyor module 320, and the discriminator 420 that determines whether there is a defect in the coating state of the photographed bolt 30 is the camera It may be installed on the conveyor module 320 in a state connected to the 410 .

The sorting unit 500 is installed at the distal end of the second transfer unit 300 and is interlocked with the inspection unit 400 to determine whether the bolt 30 transferred from the second transfer unit 300 is defective depending on whether the coating is defective. ) can be selected.

The sorting unit 500 may include a cradle 510 , a tilting device 520 , and an exhaust guide 530 .

The cradle 510 may have a structure in which the bolt 30 transferred from the second transfer unit 300 is transferred and mounted, and both ends in the longitudinal direction are opened.

The tilting machine 520 is installed on the lower part of the cradle 510 and is connected to the inspection unit 400 to set the cradle 510 according to the failure of the bolt 30 coating through the information received from the inspection unit 400, respectively. It can be tilted in a set direction.

The discharge guide 530 may be installed on both sides of the opening of the cradle 510 to induce the discharge of the bolt 30 selected through the tilting machine 520 .

The controller 600 is connected to the injection unit 100, the first transfer unit 200, the second transfer unit 300, the inspection unit 400, and the sorting unit 500, respectively, and the injection unit 100, the first It is possible to control the operation of the transfer unit 200 , the second transfer unit 300 , the inspection unit 400 , and the sorting unit 500 .

The controller 600 is provided with a wireless communication module and is interlocked with any one of a Wi-Fi communication module, a Bluetooth communication module, and a Zigbee communication module with an external mobile terminal to control the operation from the outside or to check the control situation in real time.

Horizontal reinforcement members installed on both sides of the first, second, and third supports 130, 240, 330 of the present invention in a horizontal direction to reinforce the first, second, and third supports 130, 240, 330 respectively may include more.

According to an embodiment of the present invention, the bolt coated by the control of the controller 600 according to a program set using the injection unit 100, the first and second transfer units 200 and 300 and the inspection unit 400. By inspecting the surface of (30) to determine whether the coat is defective, and sorting through the sorting unit 500, it is possible to secure accuracy while saving time and cost.

The detailed description of the preferred embodiments of the present invention disclosed as described above is provided to enable any person skilled in the art to make and practice the present invention. Although the above has been described with reference to preferred embodiments of the present invention, it will be understood by those skilled in the art that various modifications and changes can be made to the present invention without departing from the scope of the present invention. For example, a person skilled in the art may use each configuration described in the above-described embodiments in a way that is combined with each other. Accordingly, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

The present invention may be embodied in other specific forms without departing from the spirit and essential characteristics of the present invention. Accordingly, the above detailed description should not be construed as restrictive in all respects but as exemplary. The scope of the present invention should be determined by a reasonable interpretation of the appended claims, and all modifications within the equivalent scope of the present invention are included in the scope of the present invention. The present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein. In addition, claims that are not explicitly cited in the claims may be combined to form an embodiment, or may be included as new claims by amendment after filing.

10: bolt coating inspection device 30: bolt
100: injection unit 110: accommodation guide
120: first conveyor 130: first support
200: first transfer unit 210: first transfer guide
220: alignment guide 230: second conveyor
240: second support 300: second transfer unit
310: second transfer guide 320: conveyor module
330: third support 400: inspection unit
410: camera 420: discriminator
500: sorting unit 510: cradle
520: tilting machine 530: exhaust guide
600: controller

Claims (6)

As a device for inspecting whether the bolt coating is defective,
an injection unit accommodating the bolt and transferring the bolt to a set position for inspection;
a first transfer unit connected to the injection unit by a step difference of a set height and transferring the transferred bolts while aligning;
a second transfer unit connected to the first transfer unit by a step difference of a set height and transferred in a vertical state for inspection of the bolt transferred through the first transfer unit;
an inspection unit installed in a portion of the second transfer unit to inspect the bolt transferred through the first transfer unit;
a sorting unit installed at the distal end of the second transfer unit and interlocked with the inspection unit to sort the bolts according to whether the bolt coating transferred from the second transfer unit is defective; and
A controller connected to the injection unit, the first transfer unit, the second transfer unit, the inspection unit, and the sorting unit, respectively, to control the operation of the injection unit, the first transfer unit, the second transfer unit, the inspection unit, and the sorting unit; Bolt coating inspection device, characterized in that it comprises.
The method according to claim 1,
The injection unit is
a receiving guide in which the bolt is accommodated and the distal end is manufactured in a tapered shape to guide the conveying direction of the bolt;
a first conveyor installed under the accommodating guide to transport the bolts accommodated in the accommodating guide in a set direction; and
Bolt coating inspection apparatus comprising a; a first support installed under the first conveyor to support the first conveyor.
The method according to claim 1,
The first transfer unit,
a first transfer guide installed in an inclined state at the distal end of the injection unit to guide the transfer direction of the bolt;
an alignment guide connected to the first transfer guide and manufactured with a width corresponding to the diameter of the bolt to align the bolt in the longitudinal direction;
a second conveyor installed under the alignment guide to transport the bolts accommodated in the alignment guide in a set direction; and
Bolt coating inspection apparatus comprising a; a second support installed under the second conveyor to support the second conveyor.
The method according to claim 1,
The second transfer unit is
a second transfer guide installed in an inclined state at the distal end of the first transfer unit to guide the transfer direction of the bolt;
a conveyor module connected to the second transfer guide and installed in parallel while being spaced apart by a set distance to transfer the bolt head while being caught; and
Bolt coating inspection apparatus comprising a; a third support installed under the conveyor module to support the conveyor module.
The method according to claim 1,
The inspection unit is
a camera installed in a portion of the second transfer unit to photograph the bolt; and
Bolt coating inspection apparatus comprising a; a discriminator that analyzes the coating condition of the bolt photographed by the camera and determines whether the bolt coating is defective according to whether a set standard is passed.
The method according to claim 1,
The selection unit is
a cradle that receives and mounts the bolts transferred from the second transfer unit and has both ends in the longitudinal direction open;
a tilting device installed under the cradle and connected to the inspection unit to tilt the cradle in a set direction according to whether the bolt coating is defective through information received from the inspection unit; and
and discharge guides installed on both sides of the open side of the holder to induce discharge of the bolts selected through the tilting machine.

Images