KR20230093918A - Automation device for screw head painting - Google Patents

Abstract

The present invention relates to an automated device for painting screw heads, and is a configuration for locally applying and drying paint to screw heads. To this end, the present invention provides a transfer chain having a plurality of grooves so that screws can be inserted at regular intervals along the length direction, a coating unit for spraying paint through at least one spray nozzle, and a coating for forming a moisture film on the transfer chain. includes wealth
According to the present invention, by automatically cleaning the spray nozzle at regular intervals, it is possible to prevent hardening of the paint and maximize work efficiency. Furthermore, by forming a moisture film on the conveying chain excluding screws to prevent hardening of the paint on the conveying chain, the management of the device is easy and the quality can be maximized.

Description

Screw head painting automation device {AUTOMATION DEVICE FOR SCREW HEAD PAINTING}

The present invention relates to an automated device for painting screw heads. More specifically, it relates to a nail head painting automation device capable of automating the surface treatment and drying of local parts of fasteners such as screws, nails and bolts.

In each field of industry, fasteners are used to fasten parts and parts of various machines and instruments. In general, fasteners include screws, bolts, nuts, nails, and screws made of metal, and are used in various fields such as buildings, automobiles, furniture, and mobile devices. At this time, if necessary, a painting operation is performed on a local area for the purpose of marking the length and strength of the fastener or for aesthetic purposes. On the other hand, since most of the existing painting work is performed manually, there is a problem in that the efficiency of the work is reduced. In addition, there are technical difficulties due to the nature of the work of local painting, and there is a problem in that quality and production vary depending on the skill level of the operator. In addition, a plurality of work areas are partitioned by dualization of painting and drying work, and it is necessary to arrange workers or install additional equipment in each work area. In this way, in the case of dividing a plurality of work areas, the size of the work area may be limited depending on the environment of the work site, and the flow of work may not proceed smoothly in the section where the work area is changed, which may reduce productivity and work efficiency. there is.

Therefore, as a way to increase productivity and work efficiency, technologies related to conveyors such as Patent Document 1 (No. 10-2012-0104904) and Patent Document 2 (No. 10-1695763) are being developed.

Patent Document 1 (Korean Patent Publication No. 10-2012-0104904) relates to a screw head painting and drying system that paints the screw head using a paint roller on a rotating table and transfers it to the inside of a drying furnace to dry it.

However, in the process of supplying the paint to the sponge through the discharge pipe located at the bottom of the paint supply container, there is a problem in that a certain amount of paint may not be supplied due to hardening of the paint in the discharge pipe. In addition, a separate device for mixing the paint and the thinner is required to prevent the paint from hardening. In addition, since additional work such as periodic replacement and management of the sponge is required, efficiency is reduced.

On the other hand, Patent Document 2 (Korean Patent Registration No. 10-1695763) relates to an automatic screw head painting device for painting the head of a screw for installing a gypsum board for ceiling finish construction in the same color as the gypsum board. will be.

However, in the process of spraying and applying the paint in the form of a spray, the paint adheres to the transport belt or chain, which may affect future process steps. In addition, when the paint is hardened on the nozzle and pipe of the spraying device, there is a risk that the quality may be deteriorated because the paint is not uniformly applied to the screw head.

Patent Document 1: Republic of Korea Patent Publication No. 10-2012-0104904 (published date: 2012.09.24) Patent Document 2: Korean Patent Registration No. 10-1695763 (registration date: 2017.01.06)

A technical problem of the present invention is to solve the above problems, and to prevent loss of time and cost caused to uniformly apply paint.

In detail, this is to prevent deterioration in work efficiency due to waiting time occurring in the process of installing additional devices for mixing paint and thinner or in the process of managing and replacing sponges by workers.

In addition, it is to prevent the transfer belt or chain from being contaminated in the process of applying the paint and affecting future process steps.

In detail, it is to prevent paint from being continuously applied to the conveying belt or chain to harden, causing failure of the conveying device, or from deteriorating productivity and quality due to unnecessary impurities smearing on the finished product.

The present invention provides a supply unit for aligning the head of the screw to be positioned upward; A conveying chain for conveying the aligned screws from the supply unit; transport chain

A coating unit for forming a water film on the; An application unit for applying paint to the screw heads; and a drying unit that dries the paint applied to the screw heads. Provided is a screw head painting automation device including a discharge unit for discharging dried screws.

In addition, the conveying chain may have a plurality of grooves formed at regular intervals along the longitudinal direction.

In addition, the supply unit may sequentially insert and supply screws into the grooves of the conveying chain.

In addition, the application unit includes at least one spray nozzle, and the spray nozzle may spray the paint in one direction or both directions.

In addition, the coating unit may include a paint container provided with a space for accommodating paint therein; A supply pipe connected to the paint container to supply paint inside the paint container; It may include a spray nozzle that is connected to the supply pipe and sprays paint to the screw.

In addition, the spray nozzle includes an automatic cleaning module, and the automatic cleaning module can prevent the paint from hardening by cleaning the spray nozzle.

In addition, the drying unit may include a first drying unit for first drying the screw after applying the paint; and a second drying unit that secondly dries the screw that has passed through the first drying unit.

In addition, the coating unit forms a moisture film on the transfer chain except for the screw, so that the paint can be applied to the screw head.

According to the present invention, it is possible to automate the painting of the screw heads.

Specifically, according to the present invention, paint can be applied to the screw head through a spray nozzle. Furthermore, it is possible to reduce time and cost losses caused by installing additional equipment for painting or managing and replacing painting tools such as sponges or brushes.

In addition, according to the present invention, it is possible to locally paint the screw head through the coating unit. Furthermore, it is possible to increase productivity and quality by preventing the transfer chain from being contaminated in the process of applying the paint.

1 is a perspective view of a screw head painting automation device according to an embodiment of the present invention.
2 is a perspective view of a cross section of a transport chain according to an embodiment of the present invention viewed from the side.
3 is a perspective view of a state in which a water film is formed on a conveying chain according to an embodiment of the present invention.
4 is a diagram schematically illustrating the configuration of an application unit according to an embodiment of the present invention.
5 is a diagram showing a work flow diagram of an automated apparatus for painting screw heads according to an embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings, embodiments of the present invention will be described in detail so that those skilled in the art can easily carry out the present invention. However, the present invention may be implemented in many different forms and is not limited to the embodiments disclosed below. In addition, in order to clearly disclose the present invention in the drawings, parts irrelevant to the present invention are omitted, and the same or similar numerals in the drawings indicate the same or similar components.

The objects and effects of the present invention can be naturally understood or more clearly understood by the following description, and the objects and effects of the present invention are not limited only by the following description.

Objects, features and advantages of the present invention will become more apparent from the detailed description that follows. In addition, in the description of the present invention, if it is determined that the detailed description of the known technology related to the present invention may unnecessarily obscure the subject matter of the present invention, the detailed description will be omitted. Hereinafter, embodiments according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view of a screw head 11 painting automation device according to an embodiment of the present invention.

Referring to FIG. 1, the screw head 11 painting automation device includes a supply unit 100, a transfer chain 200, a coating unit 300, an application unit 400, a drying unit 500, and a discharge unit 600. ) may be included.

The supply unit 100 is a configuration for aligning the screw 10 in a certain direction. In detail, the supply unit 100 may include a feeder provided with a space capable of accommodating a large amount of screws 10, store a large amount of screws 10 supplied from the outside, and according to a predetermined time or interval It is a configuration for automatically aligning the screw 10. More specifically, the supply unit 100 serves to align the screw 10 so that its head is positioned upward by vibration or rotation of the feeder, and then transfer it to a transfer chain 200 to be described later. At this time, the type or shape of the feeder is not limited. In detail, the feeder may be implemented as a bowl feeder, a hopper feeder, a line feeder, and the like, and may be provided in various shapes such as a stepped type, a single type, a dish type, and a cylindrical shape. On the other hand, it is natural that the feeder is not limited to the above-mentioned types and shapes.

2 is a perspective view showing a cross-section of a conveying chain 200 according to an embodiment of the present invention.

Referring to FIG. 2 , the transfer chain 200 is configured to transfer the screw 10 supplied from the supply unit 100 in a certain direction. In detail, the transfer chain 200 is connected to at least one surface of the supply unit 100 and is configured to transfer the screw 10 in the longitudinal direction to the discharge unit 600 to be described later. More specifically, a plurality of grooves 210 are formed in the conveying chain 200, and the screw 10 supplied from the supply unit 100 is inserted into the grooves 210 and transferred. More specifically, a plurality of grooves 210 are formed at regular intervals along the longitudinal direction of the chain 200 for transfer, and the supply unit 100 is screwed into the groove 210 of the chain 200 for transfer. are sequentially inserted and supplied, and the transfer chain 200 transfers the inserted screws 10 at regular intervals. At this time, the shape of the groove 210 is not limited. In detail, the diameter of the groove 210 is at least larger than the diameter of the screw thread and formed to have a smaller diameter than the head of the screw 10, so that when the screw 10 is inserted into the groove 210, the conveying chain 200 Only the head of the screw 10 is exposed to the upper surface of the screw 10, but it is sufficient if the screw 10 penetrates the groove 210 and does not escape to the lower surface of the conveying chain 200.

3 is a perspective view of a state in which a moisture film 310 is formed on the transfer chain 200 according to an embodiment of the present invention.

Referring to FIG. 3 , the coating unit 300 is a component for forming a moisture film 310 on the transport chain 200 . In detail, the coating unit 300 forms a moisture film 310 on the transfer chain 200 except for the screw 10, so that the paint is applied to the screw head 11, but the screw head 11 is for transfer. It serves to prevent direct contact of paint on the chain 200. In more detail, the coating unit 300 prevents the coating unit 300 from affecting the future process by contacting the transfer chain 200 with the locally uncoated paint in the process of applying the paint by the spray nozzle 430 to be described later. can do. More specifically, by forming a thin water film 310 on the transport chain 200 except for the screw head 11, the screw 10 is bonded to the transport chain 200 due to the paint and is normally transported or discharged. You can prevent that from happening. In addition, it serves to prevent deterioration in productivity and quality by being discharged with lumps of paint attached to the finished product.

The coating unit 300 may form a moisture film 310 in various ways.

For example, before the screw 10 is inserted into the groove 210 of the transport chain 200 in the supply unit 100, a water film 310 may be formed on the transport chain 200. In detail, the coating unit 300 is formed on the outer surface of the transport chain 200 in the longitudinal direction, and may be implemented in a form of supplying moisture to the upper surface of the transport chain 200 through a plurality of injection pipes. In more detail, the coating unit 300 is formed between the supply unit 100 and the transfer chain 200, so that the screw 10 aligned from the supply unit 100 forms the groove 210 of the transfer chain 200. Before being inserted into the water film 310 may be formed by supplying moisture to the upper surface of the transfer chain 200 through a plurality of injection pipes.

As a second example, after the screw 10 is inserted into the groove 210 of the transport chain 200 in the supply unit 100, a moisture film 310 may be formed on the transport chain 200. In detail, the coating unit 300 forms a moisture film 310 on the transport chain 200, but can supply moisture only to the portion except for the screw head 11. For example, by forming the water film 310 at a height smaller than the height of the screw head 11, the water film 310 can be applied only on the transfer chain 200 except for the screw head 11. Specifically, when the screw head 11 is inserted into the groove 210 of the conveying chain 200, the height of the upper surface of the screw head 11 is formed to be higher than the height of the upper surface of the conveying chain 200. When the moisture film 310 is formed by supplying the water film 310, the height of the water film 310 is higher than the height of the upper surface of the conveying chain 200, but is sprayed at a height lower than the height of the screw head 11. Therefore, even after the screw 10 is inserted into the groove 210 of the conveying chain 200, the moisture film 310 can be formed through the above method, resulting in excellent process efficiency.

As a third example, the coating unit 300 is formed in the longitudinal direction in close contact with the lower surface of the transport chain 200, and may supply moisture from the lower surface of the transport chain 200. In detail, the coating unit 300 is formed on the inner bottom side of the transport chain 200, and by supplying moisture through a plurality of grooves 210 formed along the longitudinal direction of the transport chain 200, A moisture film 310 may be formed on the upper surface of the chain 200 . It is natural that the coating unit 300 is not limited to the above-described form. However, a shape that forms a water film 310 on the transfer chain 200 excluding the screw head 11 is sufficient.

4 is a diagram schematically illustrating the configuration of an application unit 400 according to an embodiment of the present invention.

Referring to FIG. 4 , the application unit 400 is formed on one side of the transport chain 200 in the longitudinal direction, and may include a paint container 410, a supply pipe 420, and a spray nozzle 430.

The paint container 410 has a space for accommodating paint therein, and is configured to store and supply paint. In detail, the paint container 410 serves to store a large amount of paint introduced from the outside and supply it to a supply pipe 420 to be described later. Also, the paint container 410 may include an automatic paint concentration control module. In detail, the paint concentration automatic control module is a configuration for adjusting the concentration at regular time intervals so that the same concentration of paint can be sprayed during the working hours of the day. More specifically, the paint concentration automatic control module serves to maintain the paint concentration by controlling the amount of paint and diluent introduced from the outside. At this time, the diluent may be directly introduced into the paint container 410 or mixed with the paint through a pipe after being stored in a separate storage device.

The supply pipe 420 is connected to the paint container 410 to transfer the paint stored in the paint container 410 to the spray nozzle 430 to be described later. In detail, the paint supplied from the paint container 410 is transferred in the longitudinal direction through the supply pipe 420, and the transferred paint is supplied to the spray nozzle 430 through a hollow formed on one side of the supply pipe 420. .

The spray nozzle 430 is connected to the supply pipe 420 and is configured to spray paint to the screw 10. In detail, the spray nozzle 430 receives the paint stored in the paint container 410 through a hollow formed in the supply pipe 420 and sprays the paint to the screw 10 transported at regular intervals. More specifically, at least one spray nozzle 430 may be configured, and the screw head 11 may be locally painted by spraying a paint in one direction or both directions. At this time, the spray nozzle 430 may include an automatic cleaning module. In detail, the automatic cleaning module may wash the spray nozzle 430 to prevent the paint from hardening. More specifically, it is possible to prevent the paint from hardening in the spray nozzle 430 and the supply pipe 420 connected to the spray nozzle 430 by performing automatic cleaning for a certain period of time and when the spray amount of the spray nozzle 430 decreases.

The drying unit 500 is a configuration for drying the paint applied to the screw 10 and may include a first drying unit 510 and a second drying unit 520 . In detail, in the drying unit 500, the first drying of the first drying unit 510 and the second drying of the second drying unit 520 are performed continuously following the entire process, so that there is no need for dualization of drying equipment. Time and cost savings can be achieved.

The first drying unit 510 is a component for first drying the paint applied to the screw head 11 through the application unit 400 . In detail, the first drying unit 510 is formed on one side of the conveying chain 200 in the longitudinal direction and serves to preheat the screw 10 before being transferred to the second drying unit 520 . More specifically, the first drying unit 510 hardens the paint applied to the screw heads 11 through the first drying, so that the screw 10 is transferred to the second drying unit 520 by a belt. Indirectly, it serves to prevent the paint from being erased or peeled off. At this time, the shape of the first drying unit 510 is not limited. In detail, the first drying unit 510 is formed on one side of the transfer chain 200 in the longitudinal direction at a predetermined interval from the application unit 400, and may be formed on the top or side of the transfer chain 200. . However, it may be preferable to form the upper end of the transport chain 200 to harden the paint applied to the screw head 11. The screw 10 passing through the first drying unit 510 is transported to a discharging unit 600 to be described later.

The second drying unit 520 is a component for secondly drying the screw 10 passing through the first drying unit 510 . In detail, the second drying unit 520 is formed on one side of the discharge unit 600 in the longitudinal direction, and the paint applied to the screw head 11 is dried by drying the screw 10 at least at a higher temperature than the first drying. plays a role in further hardening the

The discharge unit 600 is configured to discharge the dried screw 10. In detail, the discharge unit 600 is configured to discharge the screw 10 passed through the first drying unit 510 by receiving it from the transfer chain 200 and transporting it in the longitudinal direction. More specifically, the discharge unit 600 secondly dries the screw 10 through the second drying unit 520 formed on one side in the longitudinal direction, and then paints the dried screw 10 to the screw head 11 Automated painting It plays a role in discharging to the outside of the device. At this time, it is preferable that the discharge unit 600 is implemented with a material and shape that does not cause deformation in the second drying at a high temperature of the second drying unit 520 . In detail, the discharge unit 600 may be implemented as a metal mesh belt suitable for high-temperature heat treatment. However, it is natural that it is not limited to the above-described material and shape.

The automated method of painting the screw head 11 of the present invention will be described in detail with reference to FIG. 5 .

The supply unit 100 aligning the heads of the plurality of screws 10 upward sequentially supplies the screws 10 to the plurality of grooves 210 formed along the length direction of the conveying chain 200 (S1).

The coating unit 300 forms a moisture film 310 on the transport chain 200 except for the head of the screw 10 before the screw 10 is inserted into the groove 210 of the transport chain 200 and transferred to a future step. to form (S2).

At this time, the coating unit 300 may be implemented in various shapes, and the method of forming the water film 310 may be different depending on the shape in which the coating unit 300 is implemented. In detail, when the coating unit 300 is formed on the outer surface of the transport chain 200 in the longitudinal direction, a plurality of injection pipes supply moisture to the upper surface of the transport chain 200 to form a moisture film 310. do. On the other hand, when the coating unit 300 is formed in the longitudinal direction in close contact with the lower surface of the transport chain 200, moisture is supplied from the lower surface of the transport chain 200 to form a moisture film on the upper surface of the transport chain 200 ( 310) is formed. By forming the moisture film 310 on the transport chain 200 through the coating unit 300, it is possible to prevent the paint from being hardened while remaining on the surface of the transport chain 200.

After the moisture film 310 is formed on the transfer chain 200, the paint is applied to the screw head 11 through the spray nozzle 430 (S3).

The spray nozzle 430 of the application unit 400 sprays the paint in one or both directions to locally paint the head of the screw 10. In detail, the paint concentration automatic control module of the paint container 410 maintains a constant paint concentration during working hours, and the automatic cleaning module of the spray nozzle 430 controls the spray nozzle 430 and supply according to a certain time or spray amount. By automatically cleaning the pipe 420, the paint is prevented from hardening. In this way, the coating unit 400 uniformly applies a paint having a constant concentration during working hours.

The screw 10 to which the paint is applied is first dried in the first drying unit 510 (S4).

The first drying unit 510 formed on one side of the transport chain 200 in the longitudinal direction is applied to the screw head 11 by preheating through the first drying before the screw 10 is transferred to the second drying unit 520. harden the paint. In detail, the screw 10 is first dried to prevent the paint from being erased or separated while the screw 10 is transferred to the second drying unit 520 .

The screw 10 passing through the first drying unit 510 is subjected to second drying through the second drying unit 520 (S5).

The second drying part 520 is formed on one side of the discharge part 600 in the longitudinal direction and secondly dries the screw 10 at a higher temperature than the first drying, so that the paint applied to the screw head 11 is more cured. let it

The screw 10 after the first drying and the second drying are discharged to the outside of the automatic painting device for the screw head 11 through the discharge unit 600 (S6).

The preferred embodiment of the present invention described above has been disclosed for illustrative purposes, and various modifications, changes and additions will be possible to those skilled in the art with ordinary knowledge of the present invention within the spirit and scope of the present invention, and such modifications, changes and additions will be considered to fall within the scope of the above claims.

Those skilled in the art to which the present invention pertains may make various substitutions, modifications and changes without departing from the technical spirit of the present invention, so the present invention relates to the above-described embodiments and accompanying drawings is not limited by

10: screw 11: screw head
100: supply unit 200: chain for transfer
210: groove 300: coating part
310: water film 400: application unit
410: paint bucket 420: supply pipe
430: spray nozzle 500: drying unit
510: first drying unit 520: second drying unit
600: discharge unit S1: screw alignment and supply step
S2: Step of forming water film on transport chain S3: Step of applying paint
S4: first drying step S5: second drying step
S6: screw ejection step

Claims (9)

A supply unit for aligning the head of the screw to be positioned upward;
a conveying chain for conveying the screw pegs aligned from the supply unit;
a coating unit forming a moisture film on the transfer chain;
an application unit for applying paint to the screw heads;
a drying unit for drying the paint applied to the screw head; and
A screw head painting automation device comprising a; discharge unit for discharging the dried screw. According to claim 1,
The screw head painting automation device, characterized in that the conveying chain is formed with a plurality of grooves at regular intervals along the longitudinal direction. According to claim 2,
The screw head painting automation device, characterized in that the supply unit sequentially inserts and supplies the screws into the grooves of the conveying chain. According to claim 1,
The application unit includes at least one spray nozzle, and the spray nozzle sprays the paint in one or both directions. According to claim 4,
The applicator,
A paint container having a space for receiving paint therein;
a supply pipe connected to the paint container to supply paint inside the paint container; and the spray nozzle connected to the supply pipe and spraying the paint to the screw. According to claim 4,
The spray nozzle includes an automatic cleaning module, and the automatic cleaning module cleans the spray nozzle to prevent the paint from hardening. According to claim 1,
The drying unit,
a first drying unit that first dries the screw after applying the paint; and
A screw head painting automation device comprising a second drying unit that secondly dries the screw that has passed through the first drying unit. According to claim 1,
The screw head painting automation device, characterized in that the paint is applied to the screw head by forming a moisture film on the transfer chain except for the screw nail. sequentially supplying the screws to a plurality of grooves formed along the longitudinal direction of the conveying chain through a supply unit for aligning the heads of the plurality of screws upward;
Forming a water film on the conveying chain except for the head of the screw;
Applying a paint to the head of the screw through a spray nozzle;
first drying the screw to which the paint is applied; and
a second drying of the first dried screw;
A method for automating painting the screw head, comprising the step of discharging the dried screw.

Images