KR20110010302A - Method and apparatus for producing branch joint of pipe dispensing fluid - Google Patents

Abstract

PURPOSE: A method and a device for manufacturing a fluid distribution pipe are provided to ensure efficient manufacture of a fluid distribution pipe by continuously performing a series of processes including punching, flange forming, and socket coupling. CONSTITUTION: A method for manufacturing a fluid distribution pipe comprises steps of: punching a plurality of holes(11) smaller than the outer diameter of a socket(2) using a punching die; forming a flange(12) on each hole through drawing so that the perimeter of the hole protrudes out of a pipe body(1); locating a socket under the inner perimeter(11') of the flange and fixing it to expand the flange; and brazing the contact portion between the flange and the socket.

Description

TECHNICAL FIELD OF THE INVENTION A manufacturing method of a branch pipe for dispensing fluid and a manufacturing apparatus therefor {METHOD AND APPARATUS FOR PRODUCING BRANCH JOINT OF PIPE DISPENSING FLUID}

The present invention relates to a method for producing a branch pipe for dispensing fluid and a device for manufacturing the same. More particularly, a series of processes for coupling a socket connecting a branch pipe branched from a main body of a branch pipe to a main body is continuously convenient through a mold. The present invention relates to a method for manufacturing a fluid distribution branch pipe and an apparatus for manufacturing the same, which can be manufactured efficiently.

In general, the fluid distribution branch pipe serves to distribute the heating or cooling by circulating hot water, cold water, heat medium, etc. after connecting the branch pipes to supply fluid from the pipe-shaped main body to various places.

This conventional fluid distribution branch pipe is a method of welding and mounting a socket to connect a plurality of branch pipes on the peripheral surface of the body, and by drawing a punched hole in the body to form a screw (screw) in the expanded inner diameter A method has been proposed.

As a method of welding the socket, which is the former method, to the main body of the branch pipe, Korean Laid-Open Patent Publication No. 10-2000-0073194 discloses a hot water distributor for a hot water boiler and a manufacturing method thereof. The hot water distributor manufacturing method is to form a cylindrical distribution tube of a predetermined length by a drawing process, one side of the circumferential surface to form a first horizontal plane of a predetermined width in the longitudinal direction, the other peripheral surface facing the wider than the first horizontal plane Forming a second horizontal plane of width so that the two peripheral portions of the circumferential surface are constituted by a cylinder having a flat surface; On the surface of the first horizontal plane and the second horizontal plane of the distribution pipe, the heat medium inlet hole and the branch hole are punched by a press, and the socket is inserted into the drilled inlet hole and the branch hole, but the inserted length is inserted into the flange portion formed at one side of the socket. The annular welding rod is inserted between the inlet hole and the branch hole and the flange portion of the socket, and then heat is applied to the annular welding rod while melting. In the manufacturing method of the cylindrical distribution pipe, because the part of the circumference is flattened, the socket is easy to install and the welding is performed while the annular welding rod is inserted. The socket was easily cracked during use, causing the leak.

The latter method is a method of drawing and expanding a hole drilled in the main body, and then forming a thread in the inner diameter thereof is disclosed in Korean Unexamined Patent Publication No. 10-2003-0039102. In the manufacturing method and the pipe manufactured by the manufacturing method thereof, it is proposed to expand the metal ball through the hole drilled into the perforated pipe, and to register the method of manufacturing the branch connection port of the pipe for fluid distribution. It is proposed to expand the drilled hole in the fluid distribution pipe as a squeeze tool and a melt drill. The above method is a method of forming a screw thread in the inner diameter after expanding the small hole drilled in the pipe, it is said that there is no leakage due to the absence of welding or seam by directly forming the screw in the expanded portion, but the screw in the expanded portion In order to form the thread and the bottom of the screw in order to form the thickness of the material to be thick, in order to expand as a ball or tee (T) pulling tool and melt drill to melt the drill to provide a preheating or firing temperature to a thick material The cumbersome process that requires work is required, and if the thickness of the distribution pipe is made thin for easy expansion, tearing occurs during the manufacturing process, and a large amount of defects are generated. There was this.

In addition, a hole is drilled to weld a socket to connect the branch pipe or to form a screw in the expanded portion to directly connect the branch pipe. The formation of a hole into which the socket is fitted or a hole for expansion is generally drilled one by one or several simultaneously using a drill. When the hole is drilled through the drill, the thickness of the material is rather good in workability, but when it is thin, the cutting part is bent or widened due to the spiral blade. It is a hassle to occur, and in particular, the burr generated in the machining using a drill tool irrespective of the thickness of the material is irregular and rough enough to cause trouble in the subsequent work, there was a problem that continuous operation is difficult.

Accordingly, the present invention is to solve the above-mentioned problems, the object of the present invention is to minimize the thickness of the material of the branch pipe having a socket connecting the branch pipe to reduce the raw material cost while drilling the hole for mounting the socket Series of processes for forming the flanges and joining the sockets through the mold continuously to ensure efficient manufacturing, as well as to easily and firmly secure the sockets, which greatly improves durability. It is to provide a manufacturing method and an apparatus for manufacturing the same.

Method for manufacturing a fluid distribution branch pipe of the present invention and a device for manufacturing the same for processing the inlet or discharge hole perforated around the tube-shaped branch body for dispensing the fluid and to the hole A method for manufacturing a fluid distribution branch pipe formed by inserting, fixing, and brazing a branch pipe connection socket, wherein a plurality of holes formed around the main body of the branch pipe have an upper frame having a punching tool and a lower frame having a cutting hole. Perforating into a punching mold consisting of a smaller than the outer diameter of the socket; A plurality of holes perforated around the branch pipe main body is a drawing mold consisting of a lower member having a sliding member and a drawing tool and an upper frame having a guide tool for supporting the drawing tool, so that the inner diameter of the hole protrudes to the outside. Forming a flange through drawing in the mold; The socket is formed of a compression mold consisting of a lower frame for inserting the socket into the branch pipe body so that the socket is positioned below the inner diameter of the flange formed around the branch pipe body, and an upper frame having an insertion hole into which the socket is inserted. An upper end protruding while penetrating the outside while expanding the inner diameter of the flange from the inside of the branch pipe body, and firmly fixing the lower end of the socket in a crimped state to the inner diameter of the flange; Brazing the inner diameter of the flange and the bottom contact portion of the socket; Drilling a hole around the branch pipe body as described above; forming a flange by drawing the hole; protruding from the inside of the branch pipe body to the outside, and fixing the lower end of the socket to the inner diameter of the flange and the socket; It may be characterized in that the technical configuration comprising the step of moving to each process that is the step of brazing the lower fixed portion of the.

According to the present invention, a series of processes for drilling holes, forming flanges, and joining sockets for mounting a plurality of sockets to connect branch pipes can be efficiently performed through a mold, and the lower end of the socket has an inner diameter of the flange. Since it is inserted while expanding, it can be firmly fixed and can greatly improve its durability, and its configuration is simple, which can reduce manufacturing mold cost and minimize raw material cost. It is a very useful invention that can be improved and reduced manufacturing costs.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a process diagram showing the manufacturing process of the branch pipe for fluid distribution according to the present embodiment step by step, 1 is a branch pipe body, 2 is a socket formed with a screw in the inner diameter, 3 is a branch pipe connected to the socket (2) , 3 'is a fastening member mounted to both open portions of the branch pipe body (1).

The manufacturing process of the branch for dispensing the fluid of the present invention, cutting the branch body 1 in the form of a pipe (pipe) for dispensing the fluid as shown in Figure 1 (a), a predetermined length, (b Drilling a plurality of inlet or outlet holes 11 around the branch body 1, as shown in (c), the diameter of the sockets 2 for connecting the holes 11 to the branch pipes 3, as shown in (c). Drawing smaller to draw the flange 12 out of the branch pipe body 1, as shown in (d), the socket 2 is inserted into the branch pipe body 1 from the inside 11 'of the flange 12 from the inside. ) And the bottom end of the socket (2) is inserted into the inner diameter (11 ') of the flange 12 and then fixed, and brazing the contact portion of the socket (2) as shown in (e). The sieve is finished through the process, and is normally closed to allow opening of both side openings of the branch pipe body 1 or to be connected to the next branch pipe body 1 in a later process. The binding member 3 'is mounted and configured to connect the branch pipe 3 to the socket 2 for dispensing fluid.

A series of processes for coupling the socket (2) to the branch pipe body (1) is made by a punching die (4), a drawing mold (5), a pressing mold (6), through the conventional brazing welding socket (2) ) Is firmly fixed. Press or cylinder devices using hydraulic or pneumatic pressure to operate the mold devices are well-known techniques and devices widely used in the art, so detailed descriptions and illustrations will be omitted.

The following describes the fabrication process and operation of each process.

First, as shown in FIG. 1B, the perforating die 4 for drilling a plurality of holes 11 around the branch pipe body 1 has an upper frame 42 having a punching tool 41 as shown in FIG. 2A. ) And a lower frame 44 having a cutting hole 43 corresponding to the punching hole 41, and a pedestal 45 supporting the lower frame 44. The operation inserts the branch main body 1 into the lower mold 44, and then lowers the upper mold 42 as shown in FIGS. 2B and 2C to open the hole 11 by the punching tool 41 and the cutting hole 43. Perforated to form as shown in FIG. 2d. At this time, the diameter of the hole 11 is drilled to 0.6 ~ 1.2mm smaller than the diameter of the socket (2).

Next, as shown in (c) of FIG. 1, the drawing mold 5 for forming the flange 12 in the plurality of holes 11 drilled around the branch pipe body 1 has an inclination table 51a as shown in FIG. 3A. ) And a sliding member 51 which is coupled to the pedestal 57 by a pusher 51b having an inclined groove 51c formed thereon, a drawing tool 52 which is inserted into the inclined groove 51c and moved up and down, and the inclined platform 51a. To support the up and down operation by supporting the lower frame 53 equipped with an inclined platform 58 for horizontally moving the support plate, the support plate 54 for pressing the upper portion around the branch pipe body 1, and the drawing tool 52. It consists of an upper mold 56 having a guide tool 55. Operation is to insert the branch main body 1 into the lower frame 53, and then lower the upper frame 56 as shown in Figure 4b so that the ramp 58 is the ramp 51a of the sliding member 51 of the lower frame 53 When lowered further in contact with the c), the inclined bar 51a of the sliding member 51 moves in the right direction while simultaneously moving the pusher 51b. The movement of the push rod 51b was followed by the position movement of the inclined groove 51c as shown in FIGS. 3C and 3D, thereby raising the drawing tool 52 fitted into the inclined groove 51c to drill the branch pipe main body 1. The diameter of the hole 11 is drawn outward to form the flange 12 as shown in FIG. 3E. On the other hand, the guide tool 55 mounted on the upper frame 56 is raised to contact with the upper end of the drawing tool 52 in order to help the stable vertical rise when the drawing tool 52 rises. In addition, the upper end of the drawing tool 52 is formed in a curved surface or inclined surface so that the hole 11 perforated in the branch pipe body 1 is seated, the lower end of the drawing tool 52 of the flange 12 is drawn out The upper inner diameter 11 ′ is formed to be 0.2 to 0.6 mm smaller than the outer diameter of the socket 2, and the lower end of the flange 12 is formed as an inclined surface or a curved surface. That is, the inclined surface or the curved surface of the lower end of the flange 12 formed on the branch pipe body 1 serves to guide the upper end of the socket 2 to be coupled to the next rise. In addition, the flange 12 formed in the branch pipe body 1 is formed in a state protruding 1.5 to 3.5mm outward.

Next, as shown in (d) and (e) of FIG. 1, the compression mold 6 for penetrating and fixing the socket 2 through the inner diameter 11 'of the flange 12 formed around the branch pipe body 1 is fixed. As shown in FIG. 4A, the lower housing 62 is formed at the upper end thereof with a fitting groove 61 into which the lower end of the socket 2 is fitted, and is fixed to the pedestal 63, and an insertion hole into which the socket 2 is fitted. 64 consists of a perforated upper frame 65. The operation first inserts the socket 2 into the fitting groove 61 of the lower frame 62, and then inserts the branch pipe body 1 with the flange 12 into the lower frame 62 so that the upper end of the socket 2 is closed. When the upper frame 65 is lowered to be fitted at the lower end of the flange 12 and the upper frame 65 is lowered, the upper frame 65 contacts the branch pipe body 1 as shown in FIG. 4B and the upper frame as shown in FIG. Lowering the 65 further lowers the flange 12 of the branch pipe body 1, and at the same time, the socket 2 fitted to the bottom of the flange 12 extends to the outside while expanding the inner diameter 11 'of the flange 12. The upper end of the socket 2 protrudes and the lower end of the socket 2 is fitted to the lower end of the flange 12 as shown in FIG. 4D to maintain a fixed state. The socket 2 is fixed to the lower end of the socket 2 while the inner diameter 11 ′ of the flange 12 is extended by 0.2 to 1 mm longer than the initial 1.5 to 3.5 mm protruding state when the outer diameter 11 ′ is protruded. It is fixed more stably.

In the operation description process of the perforated mold (4), the drawing mold (5) and the pressing mold (6), the symbols of pins, guide rods, springs, etc., which help to smoothly repeat the operation and crimping and returning of the mold, are generally known techniques. Since the description is omitted.

Next, after the socket 2 is coupled to the inner diameter 11 ′ of the flange 12 formed in the branch pipe body 1, the airtightness is further maintained through brazing, which is a common welding method.

In addition, the branch pipe main body after joining and welding the socket 2 to the upper side or the lower side to the inner diameter 11 ′ of the flange 12 formed in the branch main body 1 as shown in FIGS. 5A and 5B in a later step. (1) to close the openings or to form a screw in the inner diameter to be connected to the next branch pipe main body (1) and to attach the fastening member (3 ') perforated in all directions on the wing, the socket ( In order to distribute the fluid to 2), the branch pipe 3 is used.

Drilling the hole 11 around the branch pipe body 1 as described above, drawing the hole 11 to form a flange 12, protruding from the inside of the branch pipe body 1 to the outside; While the lower end of the socket (2) is fitted and fixed to the inner diameter (11 ') of the flange 12 and the step of moving to each process, which is a step of brazing the lower fixing portion of the socket (2) is sequentially It is possible to mass production.

In this way, the hole 11 is drilled in the branch pipe main body 1, and the flange 12 is formed by expanding and drawing the punched hole 11, and the socket 2 is moved from the inside of the flange 12 to the outside. The burr generated at the end of the flange 12, which is secured and secured to the socket 2 by fixing the lower end of the socket 2 while the inner diameter of the flange 12 is expanded so as to protrude into the circumference of the socket 2 Since it is in close contact with the surface, a separate processing step is unnecessary.

Although described and illustrated in connection with the preferred embodiment of the present invention above, it is not limited to the configuration and operation as shown and described above. Therefore, it will be understood by those skilled in the art that the above embodiments can be appropriately modified and modified, so that appropriate changes, modifications, and equivalents should be considered to be within the scope of the present invention.

1 is a process chart showing the manufacturing process of the branch pipe for fluid distribution according to the present invention.

Figure 2 (a) to (d) is a cross-sectional view showing a process for drilling a hole in the branch pipe body during the manufacturing process of the branch pipe for fluid distribution according to the present invention.

Figure 3 (a) to (e) is a cross-sectional view showing a process of forming a flange by drawing a hole punched in the branch pipe body during the manufacturing process of the branch pipe for fluid distribution according to the present invention.

Figure 4 (a) to (d) is a cross-sectional view showing a process of coupling the socket to the flange formed on the branch pipe body during the manufacturing process of the branch pipe for fluid distribution according to the present invention.

5A and 5B are enlarged cross-sectional views illustrating a state in which both ends of the branch pipe main body are finished through the manufacturing process of the branch pipe for distributing fluid according to the present invention;

* Description of the symbols for the main parts of the drawings *

1: branch pipe body 2: socket

3: branch 4: punching mold

5: drawing mold 6: crimping mold

Claims (2)

A socket for connecting the branching branch 3 to the hole 11 is processed by processing a plurality of perforated inlet or outlet holes 11 around the branch body 1 in the form of a pipe for distributing fluid. In the method of manufacturing a fluid distribution branch pipe formed by inserting and fixing 2), Drilling a plurality of holes (11) formed around the branch pipe body (1) smaller than the outer diameter of the socket (2) with a punching tool (4) formed with a punching tool (41) and a cutting hole (43); Drawing a plurality of holes 11 perforated around the branch pipe body 1 at room temperature so that the diameter portion of the hole 11 protrudes out of the branch pipe body 1 in the drawing tool 52 of the drawing mold 5. Shaping the flange 12 through drawing in the mold; The socket 2 is positioned below the inner diameter 11 'of the flange 12 formed around the branch pipe body 1, and the upper end of the socket 2 is pressed by the crimp mold 6 so that the branch pipe main body 1 A coupling step of penetrating the outside while expanding the inner diameter 11 'of the flange 12 from the inner side of the flange 12 and fixing the lower end of the socket 2 fitted to the inner diameter 11' of the flange 12; Brazing the contact portion between the inner diameter (11 ') of the flange (12) and the socket (2); Drilling the hole 11 around the branch pipe body 1 as described above, drawing the hole 11 to form a flange 12, protruding from the inside of the branch pipe body 1 to the outside; While the lower end of the socket (2) is fitted and fixed to the inner diameter (11 ') of the flange 12 and moving to each process, which is a step of brazing the lower engaging portion of the socket (2) Method for producing a branching pipe for use. A plurality of inlet or outlet holes 11 are drilled around the branch body 1 in the form of a pipe for dispensing fluid, and the hydraulic pipes are fitted into the holes 11 to secure the branch connection sockets 2. Or in the manufacturing apparatus of a branch pipe for fluid distribution using a press or cylinder device using pneumatic, An upper frame 42 having a punching tool 41 for drilling a plurality of holes 11 formed around the branch main body 1 and a cutting hole 43 corresponding to the punching hole 41 are formed. A perforation mold (4) consisting of a lower frame (44) and a pedestal (45) for supporting the lower frame (44); On the pedestal 57, a ramp 51a for forming a flange 12 in a plurality of holes 11 perforated around the branch pipe main body 1 and a push rod 51b having an inclined groove 51c formed thereon is formed on the pedestal 57. A lower frame 53 equipped with a sliding member 51 coupled thereto, a drawing tool 52 fitted into the inclined groove 51c, and an inclined table 58 for horizontally moving the inclined table 51a; Drawing mold (5) consisting of a support plate (54) for pressing the upper portion around the main body (1) and an upper frame (56) having a guide tool (55) for supporting the drawing tool (52) to guide the up and down operation: In order to pass through the socket 2 through the inner diameter 11 ′ of the flange 12 formed around the branch main body 1, a fitting groove 61 into which the lower end of the socket 2 is fitted is formed at the upper end thereof. And a press mold 6 composed of a lower mold 62 fixed to the pedestal 63 and an upper mold 65 into which the insertion hole yoke 64 into which the socket 2 is fitted is perforated. Apparatus for manufacturing branch pipe for fluid distribution.

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