KR100980095B1 - Connecting part integrated pipe manufacturing device and manufacturing method - Google Patents

Abstract

The present invention relates to an integrated pipe manufacturing apparatus for forming a flange in a pipe, comprising: a groove forming part for processing a fixing groove at an end of the pipe, a flange forming part for injection molding a flange or a socket in the fixing groove, and It is characterized in that it comprises an external shape forming part for processing the external shape. The present invention in-line forming the groove forming portion, the flange or the socket forming portion and the outer forming portion of the connection unit integral pipe manufacturing process to form a flange in one process, thereby reducing the working time and easy mass production Thereby improving productivity.

Pipe, Flange, Socket, Manufacturing Equipment, Mold

Description

Joint unit pipe manufacturing device and method

The present invention relates to an integrated pipe manufacturing apparatus and a manufacturing method of the connection, and more particularly to a connection integral pipe manufacturing apparatus and a manufacturing method for forming a flange on the end of the pipe to facilitate the connection operation of the pipe and the pipe. will be.

Generally, a pipe is used as a passage for conveying a liquid such as a liquid or a gas in a sealed state.

Since these pipes cannot be manufactured long due to problems in manufacturing or transportation, a connection work for confidentially connecting pipes made of appropriate lengths is required in the field.

For example, the opposite ends of both pipes are wound by a tape and a band, or connected to both pipes using an adhesive or heat welding.

However, the above-mentioned connection work has a problem that can not be performed quickly due to the time-consuming, and also there is a problem that it is difficult to maintain perfect confidentiality if there is no on-site installation technology or the construction date is short.

In addition, there is a problem that the construction cost is increased due to the large amount of work time according to the difficulty of the site (such as the height difference of the pipe installation portion).

In order to overcome this disadvantage, a structure for forming a flange for coupling at both ends of the pipe is disclosed in Korean Patent Laid-Open Publication No. 2008-31710 (hereinafter, 'Prior Art'), with reference to FIGS. 1A to 1C. It should be outlined.

As shown in FIGS. 1a to 1c, the flange forming method according to the prior art firstly combines a reinforcing flange 4 having a through hole 6 in the center on an outer circumferential surface of the pipe 2, and then the pipe 2. ) And welds 8 and 10 to secure the reinforcing flange 4 to the upper and lower sides of the reinforcing flange 4.

Subsequently, the 45-degree mold part 20 is inserted into the inner circumferential surface of the end 12 of the pipe 2 and then pressurized to bend the distal end 12 of the pipe 2 outward by 45 degrees.

Then, after inserting the 90-degree mold portion 30 into the inner peripheral surface of the end 12 of the pipe 2 bent by 45 degrees and pressurizes again, the end portion 12 is bent by 90 degrees and the one surface of the pipe 2 and One surface of the reinforcing flanges 4 overlap each other.

And, the edge welded portion 14 is formed by welding along the contact surface edge of the overlapping end 2 of the pipe 2 and the reinforcing flange 4.

As a result, a flange is formed by coupling the end portion 12 and the reinforcing flange 4 which are bent by 90 degrees.

However, in the flange forming method according to the prior art, the joint part of the pipe 2 and the reinforcing flange 4 and the joint part of the end portion 12 and the reinforcing flange 4, which are bent by 90 degrees, are joined by welding, and thus, the heating part. Thermal deformation and local deformation occur in the flange, which causes a problem of lowering the dimensional accuracy of the flange and lowering airtightness.

In addition, since welding marks are generated by welding, aesthetics may be degraded, and pinholes may be generated to leak gas and liquid.

In addition, the productivity is low due to the flange or the socket is formed by welding, there is a problem in mass production difficult.

The present invention has been made to solve the above-mentioned conventional problems, the object of the present invention is to in-line the connection integral pipe manufacturing process in-line (inline) to form a flange or a socket in one process, so the work time is The present invention provides a connection part integrated pipe manufacturing apparatus and a manufacturing method which are shortened and easy to mass production to improve productivity.

In addition, another object of the present invention is to provide a connection part integrated pipe manufacturing apparatus and a manufacturing method which can improve the airtightness of the flange connection portion because the dimensional accuracy is increased by integrally forming a flange or a socket at the end of the pipe.

In addition, another object of the present invention is to provide an integrated pipe manufacturing apparatus and a manufacturing method for connecting the pipe and the flange by fusion and physical fixing so that the flange or socket does not leave the pipe.

Connecting part integrated pipe manufacturing apparatus of the present invention for achieving the above object, the groove forming part for processing the fixing groove in the end of the pipe, the flange forming part for injection molding the flange or socket in the fixing groove and the flange or It is characterized in that it comprises an outer shape forming part for processing the outer shape of the socket.

Here, the groove forming unit, a guide for fixing both ends of the pipe, a clamp roller and cylinder surrounding the outer circumferential surface of the pipe, a power device for transmitting a driving force to the guide and the fixing groove in the end of the pipe It is preferable to be comprised of a tool stand.

In addition, the groove forming unit is provided with an operation arm and a cylinder for inputting and discharging the pipe, the groove forming unit is preferably further provided with a feed roller for conveying the pipe.

In addition, the tool post is preferably configured to be movable in the pipe axial direction.

In addition, the flange forming part, a conveying part for conveying the pipe, a rotary molding part having a plurality of molds inserted into the end of the pipe passing through the conveying part in the circumferential direction and an injection part for melting and injecting the injection raw material into the mold It is preferred to be configured.

Furthermore, it is preferable that the said conveying part is comprised with the conveyor belt which conveys the said pipe, and the feeder which throws into the said metal mold | die the said pipe conveyed through the said conveyor belt.

The mold may include a lower mold, a pair of upper molds hinged to the lower mold, and a pair of upper molds that rotate respectively, a fixture for fixing the pair of upper molds to each other, and the pair of upper portions to correspond to the injection unit. It is preferable that it is comprised with the injection hole formed in a metal mold | die.

In addition, the outer shaping portion includes a guide for fixing both ends of the pipe, a clamp roller and a cylinder surrounding the outer circumferential surface of the pipe, a power unit for transmitting a driving force to the guide, and a flange or socket formed at the end of the pipe. It is preferable that the tool bar for processing the operation arm and the cylinder for input and discharge of the pipe and the feed roller for guiding the input and discharge of the pipe.

Connecting part integrated pipe manufacturing method of the present invention,

(I) forming a fixing groove at the end of the pipe;

(II) fixing the mold to the pipe end formed with the fixing groove;

(III) melt-injecting the injection material into the mold to form a flange or a socket;

(IV) cooling said flange or socket; And

(V) machining the contour of the flange or socket;

Including, but the steps (I) ~ (V) is characterized in that for forming the flange or the socket on the pipe end by the above-mentioned connection unit integrated pipe manufacturing apparatus.

According to the connecting part integrated pipe manufacturing apparatus and the manufacturing method according to the present invention, the groove forming part, the flange forming part and the outer forming part which is the connecting part integrated pipe manufacturing process in-line (in-line) to form a flange in one step work In addition to shortening the time, mass production is easy, and thus productivity is improved.

In addition, since the flange or socket is integrally formed at the end of the pipe, the dimensional accuracy is increased, thereby providing an effect of improving the airtightness of the flange connection portion.

In addition, the primary fixing by the fusion of the outer peripheral surface of the pipe and the flange and physically secondary fixed to the solidified inner peripheral surface of the fixed groove of the pipe and the flange is strengthened the binding force between the pipe and the flange to strengthen the effect so as not to deviate from each other to provide.

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

Here, Figure 2 is a front view showing the overall configuration of the connection part integrated pipe manufacturing apparatus according to the present invention, Figure 3 is a side view showing the groove forming part and the appearance molding part of the connection part integrated pipe manufacturing apparatus according to the present invention, Figure 4 5 is a side view illustrating a pipe processed by a groove forming part of a connecting part integrated pipe manufacturing apparatus according to the present invention, FIG. 5 is an enlarged view of a portion 'a' part of FIG. 2, and FIGS. It is sectional drawing which shows the shape of the metal mold | die which concerns on this invention, and a flange which concerns on metal mold | die.

As shown in Figures 2 to 7, the connection part integrated pipe manufacturing apparatus (A) according to the present invention, the groove forming unit 100 for processing the fixing groove 410 in the end of the pipe 400, and It consists of a flange forming part 200 for injection molding the flange 420 in the fixing groove 410 and the outer shape forming part 300 for processing the outer shape of the flange 420.

As shown in FIG. 2 and FIG. 3, the groove forming part 100 includes a guide 110 for fixing both ends of the pipe 400 and a clamp roller 120 surrounding an outer circumferential surface of the pipe 400. ) And a cylinder 130, a power unit 140 for transmitting a driving force to the guide 110, and a tool post 150 for processing the fixing groove 410 at the end of the pipe 400.

In addition, the guide 110 is formed in a conical shape and press-fits both ends of the hollow pipe 400, it is connected to the power unit 140 and rotates. Therefore, the pipe 400 fixed at both ends by the guide 110 rotates together. Since the power transmission structure (gear, sprocket, belt, etc.) of the guide 110 and the power unit 140 is well known, a detailed description thereof will be omitted.

On the other hand, since the pipe 400 is fixed at both ends, vibration caused by the sag of the pipe 400 is generated during high speed rotation. In order to prevent this, four points of the outer circumferential surface of the pipe 400 are supported by the clamp roller 120 described above, and the clamp roller 120 is moved by the cylinder 130.

The tool post 150 processes the fixing groove 410 while being transported in the circumferential direction of the pipe 400 and the outer circumferential surface of the pipe 400. In this case, the tool used in the tool post 150 uses a knurling tool or a bite.

For example, when the fixing groove 410 is processed using a knurling tool, as shown in FIG. 4A, irregularities having a '의' shape are repeatedly formed along the outer circumferential surface of the pipe 400, and a flat bite is used. When the fixing groove 410 is processed, as shown in FIG. 4B, the outer circumferential surface of the pipe 400 is formed in a 'C' cross-sectional shape.

In addition, when two or more tools of the tool post 150 are installed, a plurality of fixing grooves 410 may be processed at a time.

In addition, the groove forming unit 100 is further provided with an operation arm 160 for injecting and discharging the pipe 400 and a feed roller 180 for guiding the cylinder 170 and the pipe 400.

On the other hand, the operation arm 160 is hinged to rotate while guiding the pipe 400 to the processing position or the fixed groove 410 processing of the pipe 400 is completed, the feed roller 180 in the direction of the flange forming part 200 To be discharged. This working arm 160 is driven by the expansion and compression of the cylinder 170.

Since the above-described cylinders 130 and 170 are known to be operated by hydraulic pressure and pneumatic pressure, detailed descriptions thereof will be omitted.

On the other hand, as shown in Figure 2, the flange forming part 200, the conveying part 210 for conveying the pipe 400, the mold is inserted into the end of the pipe 400 passed through the conveying part 210 It is composed of a rotary molding unit 230 having a plurality of 220 and the injection unit 240 for melting and injecting the same material as the pipe 400 in the mold 220.

In addition, the transfer unit 210, the conveyor belt 211 for vertically and horizontally transporting the pipe 400, the fixed groove is processed, and the pipe 400 transferred through the conveyor belt 211 to the mold It consists of an injector 212 to be injected into (220).

In addition, the rotational molding unit 230 has six molds 220 installed at equal intervals of 60 mm and rotated at intervals of 60 mm in one direction.

However, it is not necessary to specifically limit the number and rotation angle of the mold 220.

In addition, as shown in FIG. 5, the mold 220 is configured to cover the pipe 400 at a portion where the fixing groove 410 is formed, and more specifically, a semi-circular lower mold 221 and the A pair of upper molds 222 hinged to the lower molds 221 and rotated, respectively, and a fixture 223 for fixing the pair of upper molds 222 to each other and an upper portion to correspond to the injection part 240. It is composed of an injection hole 224 formed in the mold (222).

Accordingly, the pipe 400 transferred by the injector 212 is introduced into the open portion of the pair of upper molds 222 rotated to both sides. Thereafter, the pair of upper molds 222 are fixed by wrapping the upper end of the pipe 400 by the fastener 223.

Next, the mold 220 surrounding the pipe 400 and the rotational molding unit 230 rotate by 60 ° to match the nozzle 241 of the injection part 240 with the injection hole 224 of the mold. Thereafter, the injection raw material is melted through the injection hole 224 to be injected into the mold 220, thereby forming a flange 420 suitable for the internal shape of the mold 220.

In addition, the injection molding mold 220 is rotated by 60 ° by the rotational molding unit 230, the molten material inside the mold 220 is solidified by a cooling fan (not shown).

On the other hand, the injection material of the injection unit 240 may be used a material different from the material of the pipe 400.

In addition, the outer shape forming unit 300, the guide 310 for fixing both ends of the pipe 400, the clamp roller 320 and the cylinder 330 surrounding the outer peripheral surface of the pipe 400 and the A power unit 340 for transmitting a driving force to the guide 310, a tool stage 350 for processing the flange 420 formed at the end of the pipe 400, and the input and discharge of the pipe 400 The operating arm 360 and the cylinder 370 and the feed roller 380 for guiding the input and discharge of the pipe 400 is configured.

In addition, the outer shape forming part 300 is to improve the dimensional accuracy by processing the appearance of the flange 420 of the pipe 400, so the configuration and operation is the same as the above-described groove forming part 100, detailed description thereof will be omitted.

Therefore, the pipe flange manufacturing apparatus (A) according to the present invention in-line the groove forming part 100, the flange forming part 200, and the outer forming part 300 which are pipe 400, the flange 420 manufacturing process. -line) to form the flange 420 in a single process. Accordingly, the work time is shortened and mass production is possible as compared with the prior art, thereby improving productivity.

Meanwhile, the shape of the flange 420 depends on the shape of the mold 220 shown in FIGS. 6 to 7 (a) and (c), and a detailed description thereof will be omitted.

In addition, as shown in Figs. 7 (b) and 7 (d), it is also possible to form a socket into which the opposite pipe is directly fitted in the same manner as the flange forming method.

Hereinafter, the method of manufacturing a flange by the pipe flange manufacturing apparatus A comprised as mentioned above is demonstrated with reference to drawings.

(I) The fixing groove 410 is formed at the end of the pipe 400.

That is, the pipe 400 is fixed in the longitudinal direction and the lateral direction by the guide 110 and the clamp roller 120 of the groove forming part 100, the fixed pipe 400 is the power unit 140 Rotate by). Thereafter, the tool of the tool post 150 processes the fixing groove 410 at the end of the pipe 400 which rotates by moving to the lower end.

In addition, the pipe 420 in which the fixing groove 410 is processed is transferred to the flange forming part 200 by the operation arm 160, the cylinder 170, and the transfer roller 180.

(II) The mold 220 is fixed to the pipe 400 in which the fixing groove 410 is formed.

More specifically, the pipe 400 in which the fixing groove 410 is formed is guided to the mold 220 by the transfer unit 210. Thereafter, an end of the pipe 400 having the fixing groove 410 is inserted into the mold 220 having the upper side opened, and the mold 220 is fixed to the pipe 400 by the fixing tool 223.

(III) A flange 420 is formed by melt-injecting the pipe 400 and the injection raw material into the mold 220.

That is, the mold 220 to which the pipe 400 is fixed is rotated by 60 ° by the rotational molding unit 230 to match the nozzle 241 of the injection part 240 with the injection hole 224 of the mold 220. Melt injection of injection material.

(IV) The injection molding inside the mold 220 is cooled.

More specifically, the injection molded in the mold 220 is rotated by 60 ° by the rotational molding unit 230, and solidified by a cooling fan (not shown) or the like to form a flange 420. In this case, the outer circumferential surface of the pipe 400 and the flange 420 are first fixed by heat fusion, and the fixing groove 410 and the solidified inner circumferential surface of the flange 420 of the pipe 400 are physically fixed secondary. As a result, the binding force between the pipe 400 and the flange 420 is enhanced.

Thereafter, the pipe 400 including the solidified flange 420 is discharged from the mold 220 and transferred to the outer mold 300.

(V) The outer shape of the flange 420 is processed.

That is, the outer shape of the flange 420 is processed by the outer shape forming part 300 to finish. Accordingly, the dimensional accuracy of the flange 420 is increased to improve airtightness.

In addition, the aesthetics of the flange 420 and the pipe 400 is improved by the additional processing of the outer shape forming part 300.

The socket formed at the end of the pipe may also be formed by the same method as described above for forming the flange.

As mentioned above, although preferred embodiment of this invention was described in detail, the technical scope of this invention is not limited to the above-mentioned embodiment, It should be interpreted by the claim. At this time, those of ordinary skill in the art should consider that many modifications and variations are possible without departing from the scope of the present invention.

1A to 1C illustrate a process of forming a flange at an end of a pipe according to the prior art.

Figure 2 is a front view showing the overall configuration of the connection part integrated pipe manufacturing apparatus according to the present invention.

3 is a side view illustrating a groove forming part and an external forming part of the connection part integrated pipe manufacturing apparatus according to the present invention.

Figure 4 is a side view showing a pipe processed by the groove forming part of the connection part integrated pipe manufacturing apparatus according to the present invention.

FIG. 5 is an enlarged view of a mold 'a' of FIG. 2.

6 (a) and 6 (c) are cross-sectional views showing the shape of the mold according to the shape of the flange.

Figure 7 (b) (d) is a cross-sectional view showing the shape of the mold according to the shape of the socket in the present invention.

* Description of symbols on main parts of the drawings *

A-Pipe Flange Making Machine 100-Groove Forming

200-flange forming part 300-forming part

Claims (10)

In the integrated pipe manufacturing apparatus, Groove forming portion for processing the fixing groove in the end of the pipe; A flange molding part for injection molding a flange or a socket into the fixing groove; And An outer shaping unit for processing an outer shape of the flange; Including, The groove forming part includes a guide for fixing both ends of the pipe, a clamp roller and a cylinder surrounding the outer circumferential surface of the pipe, a power unit for transmitting a driving force to the guide, and a tool for processing the fixing groove in the end of the pipe. Connecting part integrated pipe manufacturing apparatus, characterized in that configured. delete The method of claim 1, Connection groove integrated pipe manufacturing apparatus, characterized in that the groove forming portion is provided with an operation arm and a cylinder for inputting and discharging the pipe. The method of claim 1, Connection groove integrated pipe manufacturing apparatus, characterized in that the groove forming portion is further provided with a feed roller for guiding the pipe into and out of the groove. The method of claim 1, Connection tool integrated pipe manufacturing apparatus, characterized in that the tool post is configured to be movable in the pipe axial direction. The method of claim 1, The flange forming part, A transfer unit for transferring the pipe; Rotational molding portion having a plurality of molds along the circumferential direction is inserted into the end of the pipe passing through the conveying portion and Connection part integrated pipe manufacturing apparatus, characterized in that consisting of an injection unit for melting and injecting the injection raw material. The method of claim 6, The transfer unit, Conveyor belt for conveying the pipe and the connection unit integrated pipe manufacturing apparatus, characterized in that consisting of a feeder for injecting the pipe transferred through the conveyor belt to the mold. The method of claim 6, The mold is Lower mold, A pair of upper molds hinged to the lower molds and rotating respectively; Fixtures for fixing the pair of upper molds and each other Connection part integrated pipe manufacturing apparatus, characterized in that consisting of the injection port formed in the pair of upper mold to correspond to the injection portion. The method of claim 1, The outer molded part, Guides fixing both ends of the pipe; Clamp rollers and cylinders surrounding the outer peripheral surface of the pipe, A power unit for transmitting a driving force to the guide; A tool post for processing the flange or socket formed at the end of the pipe, An operating arm and a cylinder for inputting and discharging the pipe; Connection unit integrated pipe manufacturing apparatus, characterized in that consisting of a feed roller for guiding the input and discharge of the pipe. delete

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