KR102369785B1 - Manufacturing method for underground cable indicator and itself - Google Patents

Abstract

The present invention relates to a manufacturing method of an underground line marker post and an underground line marker post manufactured thereby. The present invention comprises: a first body molding step (S10) of injecting a composite resin into a mold to inject-mold a first body (110) in a shape of a post with a cross section of a right-angled triangle having a chamfered portion at each corner; a second body molding step (S20) of using the same mold used in the first body molding step (S10) to inject-mold a second body (120) in a shape of a post with a cross section of a right-angled triangle having a chamfered portion at each corner; a line information printing step (S30) of screen-printing phrases of information on the underground line respectively on two surfaces of the first body (110) except for an inclined surface thereof and two surfaces of the second body (120) except for an inclined surface thereof; and a body joining step (S40) of joining the first body (110) and the second body (120) to each other such that the inclined surfaces thereof come in contact with each other to form a marker post body (100) in a cuboid shape with chamfered portions at four corners, thereby allowing an underground line marker post having a structure that can be easily manufactured and installed.

Description

Method for manufacturing underground line indicator and underground line indicator manufactured thereby

The present invention relates to a method for manufacturing an underground line indicator and an invention for an underground line indicator manufactured by the method, and more particularly, in an indicator installed so as to easily grasp the types of various lines buried underground, manufacturing and installation are easy It relates to a method for manufacturing a underground line indicator forming a single structure, and to a underground line indicator manufactured by the method.

In general, various lines such as electric wires, telephone lines, and optical cables are buried in the ground of a road while forming a complicated path. An indicator is installed on the ground so that the information on the underground track, for example, the type of the track or the management agency can be easily identified.

Underground track indicators are largely classified into anchor type or post type. The anchor type indicator consists of a head that is formed in the form of a disk to indicate the type and direction of the underground line, and an anchor formed in the form of a nail at the lower part of the center of the head. It is configured to display the information of the underground line.

Since such an anchor type indicator is installed on the road surface vertically above the location where the underground line is buried, it is mostly made of high-strength metal material because of the risk of damage by vehicles or pedestrians. Therefore, there are disadvantages such as inconvenience in manufacturing and installation, as well as a low cognitive effect, so that the holding type indicator is used together.

Conventional post-type underground track indicators used mainly concrete or stone in the past, but are recently manufactured to form a post-shaped body of a certain height using a synthetic resin material such as plastic.

As an example of a known technique for a post-type underground line indicator, Korean Patent No. 10-0585334 discloses an underground cable made of synthetic resin and installed to protrude above the ground to indicate the buried position of a cable pipe for electricity, communication, etc. It constitutes a sign for the coffin display.

As another example, in Korea Utility Model Publication No. 20 - 2009 - 0008561, in the underground track sign to be buried to indicate the location of the track and pipe installed underground such as unpaved roads, lawns, green areas, etc., the inside with synthetic resin material A circular or rectangular cylindrical body shaped to have an empty space at the top, a post with a coupling hole at the top, a metal disc shape, a direction indicator with a direction indicating pattern to indicate a direction in the upper center is formed, and a coupling hole is formed in the lower center It composes an underground track post consisting of a head in which a cylindrical coupling groove that can be coupled by force fitting is formed.

Looking at the specific structure of such an underground track indicator with reference to FIGS. 8 to 9, the indicator body 10 of a rectangular pole shape made of synthetic resin is formed, and on each side of the upper part of the body exposed to the ground, the type and management of the track A display panel 30 on which an organ is printed with characters is attached and provided. A predetermined display panel is provided on the upper surface of the indicator to indicate the progress direction of the underground line.

Korean Patent Registration No. 10 - 0585334 (06.07. 2006) Korea Public Utility Model No. 20 - 2009 - 0008561 (2009.08.26)

The underground line indicator to which the prior art as described above is applied forms a post-shaped body to indicate the type of electric, communication, etc. lines installed underground, and has a lower end buried in the ground and an upper portion exposed on the ground.

In the conventional method for manufacturing a underground line indicator, a main body is molded by injection molding a synthetic resin material such as plastic. Specifically, the left and right sides are symmetrically divided based on the center line of the cuboidal post-shaped indicator body to produce a mold corresponding to the left or right external shape, and the molten material is injected to the inside of the 1/2 cuboidal post-shaped body After molding one side of the, it is manufactured in a form in which both sides of the body are fastened with bolts.

Accordingly, the underground line indicator according to the prior art as shown in FIGS. 8 to 9 is formed on both sides into a 1/2 rectangular parallelepiped, and due to the structure in which the body 10 is coupled, a coupling line in the longitudinal direction at the center of the body ( 20) is formed, and holes for bolting are formed on the two opposite planes of the four sides of the 1/2 rectangular parallelepiped body on both sides, so the exterior finish is not neat, of course, on the 4 sides of the body. Since it is impossible to directly print characters indicating the type, etc., there is a problem in that a separate display panel 30 must be additionally manufactured and attached with rivets.

In addition, the underground line indicator according to the prior art is configured to be fastened while tapping a bolt hole made of a synthetic resin material using a screw bolt that forms a thread cutting tab when both sides of the 1/2 rectangular parallelepiped body are combined. Due to the injection of the 1/2 rectangular parallelepiped body, a bolt hole of the same size is formed, so a problem occurs that a solid connection is not made in the process of entering and tapping the bolt, and there is a problem that greatly reduces workability.

Accordingly, the present invention was invented to solve the problems of the prior art as described above,

A first body molding step (S10) of injection molding the first body 110 into a post shape having a right-angled triangular cross section forming a chamfer at each corner by injecting a synthetic resin material into the mold;

A second body molding step (S20) of injection molding the second body 120 into a post shape having a right-angled triangular cross section forming a chamfer at each corner using the same mold as the first body molding step (S10);

A line information printing step (S30) of screen-printing information text about an underground line on each of the two sides except for the slopes of the first body 110 and the 2 sides except the slopes of the second body 120;

The first body 110 and the second body 120 are combined so that the four sides are in contact with the body coupling step (S40) of forming the indicator body 100 in the shape of a rectangular parallelepiped post to form a chamfer at the four corners, and ,

In the first body forming step (S10) and the second body forming step (S20),

It is formed by disposing a plurality of first and second bolt holes 112 and 122 in the longitudinal direction in the first chamfered portion 111 and the third chamfered portion 121 formed at right angle corners,

In the body coupling step (S40),

A coupling line is formed on the second chamfered portion 113 and the fourth chamfered portion 123 formed at both corners of the slopes of the first body 110 and the second body 120 ,

By fastening bolts to the first bolt hole 112 and the second bolt hole 122 in the diagonal direction of the indicator body 100, the underground line indicator forming a structure that is easy to manufacture and install is manufactured. possible goals can be achieved.

The present invention relates to a method for manufacturing an underground line indicator that forms a structure that is easy to manufacture and install by injection molding a synthetic resin material to form an indicator that is installed so as to easily grasp the types of various lines buried underground, and is manufactured by the method Provides an underground track indicator.

In particular, the present invention differentiates the main body of the underground line indicator from the prior art in which a coupling line is formed at the center of the plane of the main body during injection molding, and a form in which the body of a rectangular parallelepiped post shape is divided into two diagonally, that is, a post shape having a right-angled triangle cross section. By molding into 1/2 of the body, it is configured to form a joining line in the direction of the edge of the body.

Therefore, the present invention can shorten the process and reduce the manufacturing cost because the present invention can form not only a beautiful exterior finish compared to the prior art, but also directly screen-printing characters indicating the type of line, etc. on the four sides of the body. It works.

In addition, the present invention is configured so that the 1/2 body of the post shape having a right-angled triangular cross section is easily differentially formed with the same mold by using the same mold to form the bolt hole on both sides. Instead of using a screw bolt that forms a normal taper point, it can be easily fastened and combined, which has the advantage of remarkably improving workability.

1 is a schematic process flow diagram of a method for manufacturing an underground line indicator according to the present invention.
Figure 2 is a perspective view of one side of the underground line indicator manufactured by the present invention.
3 is a perspective view of the other side of the underground line indicator manufactured by the present invention.
Figure 4 is an exploded perspective view of the underground line indicator manufactured by the present invention.
5 is a plan view and a front view of the underground line indicator manufactured by the present invention.
Fig. 6 is a cross-sectional view taken along line AA of Fig. 5;
Fig. 7 is a cross-sectional view taken along line BB of Fig. 5;
8 to 9 are a schematic perspective view and an exploded perspective view of an underground line indicator according to the prior art.

Hereinafter, with reference to the accompanying drawings, the construction and operation of the method for manufacturing a underground line indicator of the present invention and a preferred embodiment of the underground line indicator manufactured by the method will be described in detail as follows. In the following description, detailed descriptions of parts that can be easily implemented by those skilled in the art may be omitted. In addition, since the following description is given with reference to preferred embodiments of the present invention, the present invention is not limited by the following examples, and it is natural that various modifications may be provided without departing from the scope of the present invention. something to do.

1 is a schematic process flow diagram of a method for manufacturing an underground line indicator according to the present invention, FIG. 2 is a perspective view of one side of the underground line indicator manufactured by the present invention, FIG. 3 is a perspective view of the other side of the underground line indicator manufactured by the present invention; 4 is an exploded perspective view of the underground line indicator manufactured by the present invention, FIG. 5 is a plan view and a front view of the underground line indicator manufactured by the present invention, FIG. 6 is a cross-sectional view taken along line AA of FIG. 5, FIG. 7 is A cross-sectional view taken along line BB of FIG. 5 , FIGS. 8 to 9 are schematic perspective and exploded perspective views of an underground track indicator according to the related art.

The underground line indicator manufacturing method to which the technology of the present invention is applied and the underground line indicator manufactured thereby are easy to manufacture and install compared to the prior art in the indicator installed so that the types of various lines buried underground can be easily identified on the ground and to note that it relates to a method for manufacturing an underground line indicator that forms a structure with a beautiful appearance and to an underground line indicator manufactured by the method.

To this end, the method for manufacturing the underground line indicator of the present invention largely includes a first body forming step (S10), a second body forming step (S20), a line information printing step (S30), and a body combining step (S40). and is specifically as follows.

The first body molding step (S10) is a step of injection molding the first body 110 into a post shape having a right-angled triangular cross section forming a chamfer at each corner by injecting a synthetic resin material into the mold.

The mold applied for the implementation of the first body forming step (S10) is the final shape of the indicator to be manufactured by the present invention, that is, the indicator body 100 of a rectangular parallelepiped post shape forming a chamfer on the four corners diagonally. The inner shape is formed in the form of two divisions in the direction, and the inside is empty.

Therefore, in the first body forming step (S10), the first body 110 is molded into a post shape having a right-angled triangular cross section forming a chamfer at each corner. The chamfered portion forms a first chamfered portion 111 in a right-angled corner portion, and forms a second chamfered portion 113 in both side edge portions of the bevel.

In the first body forming step (S10), the first chamfered part 111 and the second chamfered part 113 are each chamfered on the four sides of the entire edge of the marker body, which is completed through a body coupling step (S40), which will be described later. It is molded to form an even angle with respect to the side.

In the first body forming step (S10), a plurality of first bolt holes 112 are arranged in the longitudinal direction in the first chamfered portion 111 formed at the right angle corner to form the first body forming step (S10).

In the first body forming step (S10), a forming pin for forming the first bolt hole 112 is disposed in the mold from the first chamfer 111 toward the center of the slope, and the first bolt hole 112 is formed. configured to form In an embodiment of the present invention, the first bolt hole 112 is formed in the upper, lower and four places in the longitudinal direction for stable coupling of the first body 110 and the second body 120 in the shape of a post. However, depending on the length (height) of the marker body, the number and spacing may be modified and applied.

Since the first body 110 formed in the first body forming step (S10) is molded of a synthetic resin material, it is possible to fasten the screw bolt 130 without forming a separate screw in the first bolt hole 112, This will be described later.

In addition, in the first body forming step (S10), the underground support 115 is formed so as to be parallel to the coupling line 140 by passing through between two surfaces excluding the slope from the lower portion of the first body 110 .

The underground support part 115 is provided with a plurality of partition walls horizontally and vertically so that the indicator body 100 is stably buried by the weight of the soil filled between the partition walls when the indicator body 100 is buried. Injection molding is performed in the form of a rectangular hole that penetrates at 45 degrees to the plane between two surfaces except for the slope of Inserting iron (reinforcing bars, etc.) or wood into the underground support part 115 horizontally into the hollow part of the bulkhead, or pouring the foundation concrete up to the hole hollow part when pouring it, forms an integral part with the indicator to prevent pull-out and overturning. .

In the second body molding step (S20), the second body 120 is injection molded into a post shape having a right-angled triangular cross section for forming chamfers at each corner using the same mold as the first body molding step (S10). is a step

In the second body forming step (S20), the second body 120 is molded into a post shape having the same right-angled triangular cross section as the first body 110 . A third chamfering portion 121 is formed in the right-angled corner portion of the second body 120, and a fourth chamfering portion 123 is formed in both side edge portions of the slope.

In the second body forming step (S20), the third chamfered part 121 and the fourth chamfered part 123 are each chamfered on the four sides of the entire corner of the marker body, which is completed through a body coupling step (S40), which will be described later. It is molded to form an even angle with respect to the side.

In the second body forming step (S20), a plurality of second bolt holes 122 are arranged in the longitudinal direction in the third chamfered portion 121 formed at the right-angled corner to be formed.

The second bolt hole 122 is formed to correspond to the first bolt hole 112 at the same position and is provided to penetrate in a diagonal direction of the final indicator body.

Since the second body 120 formed in the second body forming step (S20) is molded of a synthetic resin material, it is possible to fasten the screw bolt 130 without forming a separate screw in the second bolt hole 122, This will be described later.

In addition, in the second body forming step (S20), a through hole is formed between the two surfaces excluding the slope from the lower portion of the second body 120 to form a through-hole support part 125 so as to be parallel to the coupling line 140 to form a through hole in the first body. It is configured to implement the same action as the underground support 115 of (110).

In the second body forming step (S20), a bushing is added to the forming pin installed in the mold for forming the first bolt hole 112 in the first body forming step (S10) to the first bolt hole 112. Compared to that, it is configured to form a larger inner diameter of the second bolt hole 122 .

The second bolt hole 122 forms a passage through which the screw bolt enters when the screw bolt 130 is fastened in the body coupling step S40 to be described later. When the second bolt hole 122 and the first bolt hole 112 made of a synthetic resin material are formed to have the same inner diameter, the second bolt hole 122 is an entry passage using the screw bolt 130 that forms a thread cutting tab. Since fastening must be made by tapping the first bolt hole 112 sequentially from Tapping must be performed on the 122, and when the screw bolt 130 reaches the first bolt hole 112 and wants to form a tapping in the first bolt hole 112, the screw bolt 130 proceeds to the first body ( 110) is partially pushed out, so that the first body 111 and the second body 120 are not firmly coupled to each other.

Therefore, in the second body forming step (S20), a predetermined bushing is mounted on the outer circumferential surface of the forming pin in the same mold to differentiate the inner diameters of the second bolt hole 122 and the first bolt hole 112, thereby forming the second bolt hole. The inner diameter of (122) is configured to be larger than the inner diameter of the first bolt hole (112). Accordingly, in the main body coupling step (S40), which will be described later, bolt fastening can be performed more easily, which will be described later.

The line information printing step (S30) is a step of screen-printing information text about the underground line on two sides except for the slopes of the first body 110 and on each of the 2 sides except the slopes of the second body 120 am.

By the first body forming step (S10) and the second body forming step (S20), the first body 110 and the second body 120 are formed in a holding shape having a right-angled triangular cross section, and each Since no coupling lines are formed on the two sides and the smoothness is maintained, it is possible to directly screen-print all information on the underground line information, such as the type of line, the name of the management organization, and the phone number, on all four sides.

Therefore, in the line information printing step (S30), the underground line information is directly displayed on the first body 110 and the second body 120 by screen printing to exclude a separate display panel attachment process as in the prior art. make up

The main body coupling step (S40) is a step of combining the first body 110 and the second body 120 so that the four sides are in contact with the display body 100 of a rectangular parallelepiped post shape forming a chamfer at four corners. am.

In the main body coupling step (S40), the first body 110 and the second body 120 of the post shape having a right-angled triangular cross section are in contact with the slopes of the first body 110 and the first chamfer 111 of the first body 110). and the first bolt hole 112 and the second bolt hole 122 formed to face the center of the slope in each of the third chamfered portions 121 of the second body 120 are coupled to communicate with each other.

Therefore, in the main body coupling step (S40), the coupling lines 140 on the second chamfered parts 113 and the fourth chamfered parts 123 formed on both sides of the slopes of the first body 110 and the second body 120 . ) is formed, and bolts are fastened to the first bolt hole 112 and the second bolt hole 122 in the diagonal direction of the display body 100 to be coupled.

In the main body coupling step (S40), after entering the bolt into the second bolt hole 122 with a large inner diameter using the screw bolt 130, the screw bolt 130 into the first bolt hole 112 with a small inner diameter. It is configured so as to be coupled by fastening the ends.

By the second body forming step (S20), the second bolt hole 122 has a larger inner diameter than the first bolt hole 112. In the main body coupling step (S40), a normal tapered screw bolt 130 is formed. ) enters the second bolt hole 122 with a large inner diameter and the tapered end enters the first bolt hole 112 with a small inner diameter, and then tightens the bolt by the tensile force acting when fastening the first body 110 ) is configured to be easily coupled while being pulled toward the second body 120 .

The underground line indicator manufactured by the underground line indicator manufacturing method to which the technology of the present invention is applied having the configuration as described above forms the indicator body 100 to which the first body 110 and the second body 120 are coupled. make up

The first body 110 and the second body 120 are formed in a post shape having a right-angled triangular cross section, and a first chamfer 111 and a third chamfer 121 are formed at right angle corners, and a second chamfer is formed at both sides of the slope. It includes a second chamfer 113 and a fourth chamfer 123 .

The first body 110 and the second body 120 are provided with line information printing units 114 and 124 for screen-printing information about the underground line on two surfaces except for the four sides.

A first bolt hole 112 and a second bolt hole 122 are formed on the first chamfered portion 111 and the third chamfered portion 121 of the first body 110 and the second body 120 in the longitudinal direction. It is formed by placing many.

The first body 110 and the second body 120 are combined so that the slopes are in contact with each other to form the display body 100 in the shape of a rectangular parallelepiped post.

The indicator body 100 forms a coupling line 140 on the second chamfer 113 and the fourth chamfer 123 , and in the second bolt hole 122 of the third chamfer 121 . The screw bolt 130 is configured to be fastened to the first bolt hole 112 of the first chamfer 111 in the diagonal direction.

In addition, in the lower portions of the first body 110 and the second body 120 , the underground support parts 115 and 125 are formed so as to be parallel to the coupling line 140 by passing through between the two surfaces except for the respective slopes.

The underground support parts 115 and 125 are provided with a plurality of bulkheads horizontally and vertically, so that when the indicator body 100 is buried, the indicator is stably buried with soil or iron (reinforcing bar, etc.), wood, or concrete filled between the bulkheads and pulled out. Constructed to prevent over-conduction.

As described above, the underground line indicator manufacturing method according to the present invention and the underground line indicator manufactured thereby are formed by injection molding a synthetic resin material, but different from the prior art in which a coupling line is formed in the center of the body, a coupling line in the corner direction of the body configured to form 140 .

Therefore, the present invention can form the characters indicating the type of line, etc. directly on the four sides of the main body by screen printing compared to the prior art, thereby shortening the process, reducing the manufacturing cost, and forming a beautiful exterior finish of the display. there is an advantage

In addition, the present invention is made to form the first body 110 and the second body 120 in the shape of a post having a right-angled triangular cross-section with the same mold by simply differentially forming the inner diameters of the bolt holes of both bodies during injection molding. It is expected that the industrial application will be very large because it has the advantage of easy manufacturing and installation, such as remarkably improving workability when both main bodies are combined by using a conventional taper screw bolt 130 without using the generated tapping bolt. .

S10: first body forming step
S20: second body forming step
S30: Line information printing step
S40: body bonding step
100: indicator body
110: first body
111: first chamfer
112: first bolt hole
113: second chamfer
120: second body
121: third chamfer
122: second bolt hole
123: fourth chamfer
114,124: line information printing unit
115, 125: underground support
130: screw bolt

Claims (4)

A first body molding step (S10) of injection molding the first body 110 into a post shape having a right-angled triangular cross section forming a chamfer at each corner by injecting a synthetic resin material into the mold;
A second body molding step (S20) of injection molding the second body 120 into a post shape having a right-angled triangular cross section forming a chamfer at each corner using the same mold as the first body molding step (S10);
A line information printing step (S30) of screen-printing information about the underground line on each of the two sides except the slopes of the first body 110 and the 2 sides except the slopes of the second body 120;
The first body 110 and the second body 120 are combined so that the four sides are in contact with the body coupling step (S40) to form the indicator body 100 in the shape of a rectangular parallelepiped post to form a chamfer at the four corners, and ,
In the first body forming step (S10) and the second body forming step (S20),
It is formed by disposing a plurality of first and second bolt holes 112 and 122 in the longitudinal direction in the first chamfered portion 111 and the third chamfered portion 121 formed at right angle corners,
In the body coupling step (S40),
A coupling line 140 is formed on the second chamfered portion 113 and the fourth chamfered portion 123 formed on both sides of the slopes of the first body 110 and the second body 120 ,
A method for manufacturing an underground line indicator, characterized in that it is formed by fastening bolts to the first and second bolt holes (112) and the second bolt hole (122) in a diagonal direction of the indicator body (100). The method of claim 1,
In the second body forming step (S20),
In the first body forming step (S10), the inner diameter of the second bolt hole 122 is lower than that of the first bolt hole 112 by adding a bushing to the forming pin installed in the mold for forming the first bolt hole 112. made to be large,
In the body coupling step (S40),
It is characterized in that after entering the bolt into the second bolt hole 122 with a large inner diameter using the screw bolt 130, the end of the screw bolt 130 is fastened to the first bolt hole 112 with a small inner diameter to be coupled. A method for manufacturing an underground line indicator. In the underground line indicator manufactured by claim 1 or 2,
It is formed in a post shape having a right-angled triangular cross section, and the first chamfer 111 and the third chamfer 121 are formed at right angle corners, and the second chamfer 113 and the fourth chamfer 123 are formed at both sides of the slope. Including a first body 110 and a second body 120 provided with,
The first body 110 and the second body 120 are provided with line information printing units 114 and 124 on which information text about the underground line is screen-printed on each of two sides except for the slopes,
A first bolt hole 112 and a second bolt hole 122 are formed on the first chamfer 111 and the third chamfer 121 of the first body 110 and the second body 120 in the longitudinal direction. Formed by placing a number of
The first body 110 and the second body 120 are combined so that the slopes are in contact with each other to form the indicator body 100 in the shape of a rectangular parallelepiped post,
The indicator body 100 forms a coupling line 140 on the second chamfer 113 and the fourth chamfer 123 and is formed in the second bolt hole 122 of the first chamfer 111 . Underground line indicator, characterized in that the screw bolt 130 is configured to be fastened to the first bolt hole 112 of the third chamfer 121 in the diagonal direction. 4. The method of claim 3,
In the lower portion of the first body 110 and the second body 120, through-holes between the two surfaces except for the respective slopes to form the underground support parts 115 and 125 so as to be parallel to the coupling line 140,
Underground line indicator, characterized in that the underground support (115, 125) is provided with a plurality of partition walls horizontally and vertically to prevent pulling-out and overturning by the soil filled between the partition walls when the indicator body 100 is buried.

Images