KR20200075306A - Tubelate forming apparatus of metal pipe and method using the same - Google Patents

Abstract

The present invention relates to a branch pipe forming apparatus of a metal pipe and a forming method using the same. According to the present invention, the branch pipe forming apparatus comprises: a maintenance frame (100) which has a moving rail (110) formed by being symmetrical between a front side and a rear side on an upper end formed to be long in a longitudinal direction to correspond to the length of the pipe for maintaining the horizontality and the verticality of the pipe; a moving cart (200) engaged with the moving rail (110) formed on the upper end of the maintenance frame (100) by a rail to move horizontally, which has an angle-adjustable fixing chuck (210) formed on an upper end; a supporter (400) engaged with the fixing chuck (210) of the moving cart (200) by penetrating, which has one end inserted into the pipe in accordance with the movement of the moving cart (200), and has a position control jig (410) to insert a drawing mold (300) into a front end unit inserted into the pipe; a pipe settlement/supply frame (500) formed on the opposite side to the maintenance frame (100) to accommodate the metal pipe, and to move horizontally to supply an inner pipe for forming a branch pipe on the metal pipe; and a branch pipe forming unit (700) formed between the maintenance frame (100) and the pipe settlement/supply frame (500) to form a branch pipe by punching the metal pipe supplied from the pipe settlement/supply frame (500) and drawing and beveling by engaging the drawing mold (300) with a drawing bolt (600). The present invention aims to provide the branch pipe forming apparatus of the metal pipe and the forming method using the same, which are able to prevent the damage to the raw materials and to improve the product quality.

Description

Tube forming apparatus of metal pipe and method using the same}

The present invention relates to an apparatus for forming a branch pipe of a metal pipe and a molding method using the same, and more specifically, a tee (T)-shaped branch pipe so as to protrude vertically to a portion where branching is required for pipes made of metal such as a metal pipe. By integrating the three fixed equipments for forming the draw, it overcomes the limitations of the place and work space, reduces maintenance and fixed expenditure costs, and reduces equipment purchase costs and labor costs due to unification of the equipment purchased individually. It relates to a branch pipe forming apparatus of a metal pipe and a molding method using the same, which can reduce the processing time and minimize uniform quality and product defects by one person.

As is well known, metal pipes have been widely used throughout industrial facilities such as piping for water and sewage facilities, water treatment facilities, heating piping, and piping for firefighting facilities. Looking at the conventional manufacturing method of the branched metal pipe used in various ways in the industrial field, according to the patent application 10-1995-006937, the cutting process for cutting the metal pipe for general structure to a certain size and the branch using a rod punch and a punch die Punch process to drill holes in the installation location, insert a conical plug inside the steel pipe, fasten it with the bolt from the top where the hole is drilled, and pull the fastening bolt with a hydraulic press to cause plastic deformation in the drilled hole, so that the branch pipe is fired vertically. It consists of a process and a grinding process that processes the protruding parts to a certain height, and each process is an independent process.In particular, the branch pipe firing process inserts a conical plug inside the perforated steel pipe, bolts from the top where the hole is punched. Fastening, withdrawal of the plug with a hydraulic press, causing plastic deformation in the drilled hole, separation of the fastening bolts, reinsertion of the plug inside the metal pipe, and manual tightening of bolts require excessive work time, as well as each process It is difficult to maintain the uniformity of the product even if a highly skilled worker is put in place, and there are problems in that the quality is lowered and the manufacturing cost is increased due to a decrease in productivity due to a high defect rate.

In order to solve this, an inner mold having a molded ball is inserted into a metal pipe with an outer circumferential surface, and the inner wall of the pipe is pressed by pushing the molded ball with a push rod provided at the rod end of the forming cylinder of the outer part of the pipe. Disclosed is a method and apparatus for forming a coupling portion of a metal pipe that can be made and also prevents wear of the inner circumferential surface of the coupling portion by using the above-described forming ball.

Further, according to Patent Application No. 10-2009-44929, in a branch pipe manufacturing apparatus for a metal pipe. A cylinder holder fixedly installed on the upper side and a lower second cylinder integrally formed with the first cylinder, and a rod punch of the first cylinder protrude downward through the center of the second cylinder so that the metal pipe can be pierced. A cylinder rod of the second cylinder installed and installed to be positioned outside the rod punch of the first cylinder, and a rotating body coupled to be rotated by installing a byte at the bottom of the cylinder rod of the second cylinder, and one side of the cylinder holder In the motor shaft is installed in the vertical direction, the motor shaft of the motor is installed to move up and down, the belt connected to the rotating body, and the first cylinder spaced apart from the load punch of the first cylinder is cut to a certain size It discloses that the metal pipe is composed of a holder having a semi-circular groove formed thereon, a clamp fixing both ends of the metal pipe seated on the fixture, and a cylinder inserted and fixedly installed inside the metal pipe.

However, in the conventional molding apparatus, in the process of inserting the plug into the metal pipe, the worker simply manually inserts the plug and visually checks the plug through the perforated portion, combines bolts, draws, and performs plastic deformation. There is a problem in that it takes a considerable amount of work time. Moreover, in the case of attempting to form a plurality of branch pipes, as described above, since such operations have to be repeated, there is a problem in that production time is required and mass production is difficult.

Moreover, if the plug is not standing upright in the process where the worker has to find the plug with the naked eye and engage with the bolt, the hassle of having to manually stand and fasten it and hurting the chamfered part of the hole drilled in the process, etc. Safety accidents occurred frequently.

Furthermore, there is a problem in that there are limitations in place because each of the equipments for injecting, drilling, drawing, and chamfering metal pipes is separately provided, and this leads to an extension of the working line, leading to an increase in working time. In the process of moving the pipes to the processing equipment in order, there were frequent occurrences of product defects due to safety accidents due to the fall of the metal pipes and the trouble of having to reposition the branch pipes during the movement.

In addition, due to this work process, a large number of manpower is required, resulting in an increase in labor cost and production cost, and there are various problems such as product defects due to scratches between the movement of raw materials and obstruction of the worker's work space. .

Therefore, the present invention was created to solve the problems as described above, and by integrating a device for forming a branch pipe of a metal pipe into one device, reducing work flow, and unifying workers to produce uniform product quality. In addition to this, it overcomes the restrictions on the place for installation of the device and prevents damage to the raw materials due to the shortening of the moving distance of the raw materials, so that the product can be produced by uniformly horizontally and vertically during product processing and raw material processing. Therefore, the object of the present invention is to provide a branch pipe forming apparatus of a high quality metal pipe and a molding method using the same.

In addition, the present invention improves productivity through shortening of work time by allowing a plurality of drawing molds (plugs) to be placed on a metal pipe at a time, so that a part that is dependent on the human eye can be quickly combined with a drawing bolt through a position control jig. It is possible to minimize the defect rate, and it is possible to insert a large number of drawing molds (plugs) into the metal pipe in one process, so that the number of processes for forming branch pipes while repeatedly inserting and removing plugs to form one conventional branch pipe Significantly reduced mass production is possible, and there is no change in the position of the metal pipe with one vertical horizontal setting. There is another purpose to provide.

In order to achieve the above object, the branch pipe forming apparatus of the metal pipe according to the present invention has a moving rail 110 formed symmetrically in the longitudinal direction corresponding to the length of the pipe, and maintains vertical and horizontal pipes. A retaining frame 100 provided to do so; A moving cart 200, which is rail-coupled to the moving rail 110 formed on the upper end of the holding frame 100, horizontally moved, and an angle-adjustable fixed chuck 210 is formed on the upper end; Penetratingly coupled to the fixed chuck 210 of the mobile bogie 200, one end enters into the pipe according to the movement of the mobile bogie 200, and the drawing mold 300 is placed at the tip end entering the pipe. A support 400 having a position control jig 410 formed thereon; A metal pipe receiving frame 500 accommodated in the metal frame on the opposite side of the retaining frame 100 and provided to move horizontally to supply a branch pipe to the metal pipe; It is formed between the holding frame 100 and the pipe rest supply frame 500 and is formed by combining the drawing bolt 600 with the perforation and the drawing mold 300 to the metal pipe supplied from the pipe rest supply frame 500. And a branch pipe forming unit 700 provided to form a branch pipe by chamfering.

Here, the drawing mold 300 is formed with a cone-shaped head portion 310 in which a bolt hole 312 is formed at the center of the upper surface, and is formed with a square departure prevention protrusion 314 on the lower surface of the head portion 310. Is formed; The position control jig 410 is formed of a plate body at the front end of a support that is introduced into the pipe, and the position control groove in the shape of a long hole in which the detachment preventing protrusion 314 of the drawing mold 300 is slidably engaged in the center of the plate body ( 412) is formed, the pull-out mold 300 is at least one or more escape prevention projections 314 are coupled to the position control groove 412 of the position control jig 410, the support 400 is fixed to the draw position , After fixing to the fixed chuck of the moving cart to maintain the drilling angle, the metal pipe is moved to a vertically horizontal position, and the position control jig 410 formed at the tip of the support is branched inside the metal pipe. It is characterized in that it is provided to be accurately positioned at the position of the hole drilled into the long hole to be formed.

On the other hand, the branch pipe forming unit 700 is a fixed vise 712 for fixing the rear side close to the position where the branch pipe of the pipe supplied to the pipe mounting supply frame 500 is formed on one side of the bed is formed , After drilling a hole of a long hole for forming a branch pipe on a pipe upper surface of the front side fixed by the fixing vise 712, or after the branch pipe is pultruded, it is fixed by a fixing vise again to open the top of the branch pipe. Milling means 710 provided to be chamfered; When the pipe is formed on the other side of the bed opposite to the milling means 710, and a hole with a long hole is drilled to form a branch pipe by the milling means 710, the fixing vise 712 releases the fixed pipe and then moves horizontally. The support 400 is drawn in a state in which a plurality of drawing molds are coupled to the inside of the pipe, and a drawing bolt 600 is formed at the bottom of the main body by combining the drawing mold 300 and the drawing bolts 600 drawn into the pipe. It is characterized by being formed by a drawing means 720 provided to form a branch pipe while the draw mold 300 is pulled through the hole of a long hole in the pipe while the draw mold 300 is pulled through the hole 722.

Here, the drawing means 720 corresponds to the outer periphery of the metal pipe in the left and right directions of the rectangular perforated hole, when drawing the drawing mold 300 by the drawing bolt 600, the drawing bolt to prevent deformation of the metal pipe The metal pipe fixing part 730 is formed to the left and right of the drawing ring 722 to which the 600 is coupled, and the metal pipe fixing part 730 is longitudinally corresponding to the lower width of the main body of the drawing means before and after the drawing ring 722. A long formed fixing part rail 731; The fixing part rail 731 is fixed to the front left and right, and a support portion 732 formed of a plate body; An adjustment shaft 733 having both ends coupled to idle at the lower end of the support portion 732 and having left and right screws formed thereon; A left and right screw handle 734 which is fixedly coupled to the center of the adjustment shaft 733 and that the adjustment shaft 733 rotates idly; The fixed part rail 731 is rail-coupled to move the rail, and the pull-out ring 722 is symmetrically formed to the left and right to protrude downward, and the left and right screws are screwed to the left and right of the adjustment shaft 733 on which the left and right screws are formed. A fixing part arm 735 formed such that the widths are enlarged and reduced by moving the rails in the opposite direction to the pulley ring 722 side according to the adjustment of the screw handle 734; A reinforcing arm 736 formed to be coupled to the lower portion of the fixed arm 735 to enlarge the contact area with the metal pipe; It characterized in that the support portion 735 and the reinforcing arm 736 is formed to have a "금속" shape of a support slope 737 so as to correspond to an arc of the outer periphery of the metal pipe.

On the other hand, the forming method using the branch pipe forming apparatus of the metal pipe according to the present invention, in the branch pipe forming method of the metal pipe, accommodates a plurality of metal pipes, the unit metal pipe milling means of the branch pipe forming unit 700 After the horizontal transfer to the (710) side, a pre-treatment step (S100) in which the metal pipe is fixed to the rear side where the branch pipe is to be formed by the fixing vise 712; A perforation step (S200) of perforating a hole of a long hole by a milling means 710 to a position where the branch pipe is to be formed through the pre-treatment step; After releasing the metal pipe in which the hole of the long hole is perforated in the fixing vise 712 to the position where the branch pipe is formed through the perforation step, the position where the hole of the long hole is perforated is located on the same vertical line as the drawing position. A first transfer step (S300) of horizontally moving to the drawing means 720; It is formed on the opposite side of the drawing means 720 and prevents the square from forming at the bottom of the drawing mold 300 in the long hole-shaped position control groove 412 of the position control jig 410 formed on the front end of the support 400 to be horizontally moved. The step of preparing the drawing mold is provided so that the projection 314 is fitted and coupled, but a number of supports corresponding to the branch pipes are pushed through the step fixed to the perforated hole side of the long hole while the metal pipe horizontally moves the support fixed in the drawing position. (S400) and; The support 400 coupled to the plurality of drawing molds 300 is positioned in the position control jig 410 through the drawing mold preparation step to the inside of the metal pipe transferred to the drawing means 720 through the first transfer step And the drawing mold insertion step (S500); The front end of the support 400 fixedly coupled to the fixed chuck 210 formed on the upper end of the mobile truck 200 horizontally moved by rail coupling on the upper portion of the retaining frame 100 continuously enters and draws into the interior according to the horizontal movement of the metal pipe A drawing mold positioning step (S600) in which the drawing mold 300 is positioned inside the metal pipe to a position where a hole of a long hole is drilled on the same vertical line as the means 720; Through the drawing die positioning step, from the drawing means 720 located on the same vertical line and the hole of the long hole and the drawing die 300 to the bolt hole 312 formed on the head portion 310 of the drawing die 300 The drawing bolt 600 is coupled, the head of the drawing bolt 600 is coupled to the drawing ring 722 of the drawing means 720d, and the metal pipe fixing part 730 formed on the bottom surface of the drawing means is punched in a rectangle. Corresponding to the outer periphery of the metal pipe in the left and right directions of the opened hole, fixed to prevent deformation of the metal pipe when drawing, and pulling the head of the drawing bolt 600 upward to pull the drawing mold 300 out of the rectangular perforated hole A drawing step (S700) in which a branch pipe is formed as the metal pipe of the rectangular perforated hole outer edge is drawn and protrudes together with the separation; A second transfer step (S800) of transferring the metal pipe having the branch pipe formed through the drawing step so that the milling means 710 and the branch pipe are positioned on the same vertical line and fixed to the fixed vise 712; Milling chamfering step to facilitate the branch pipe joining by uniformly processing the irregular protrusion height of the top of the branch pipe of the metal pipe which is transferred through the second transfer step and the branch pipe is located on the same vertical line as the milling means 710 ( S900); It includes; a finishing step (S1000) of disassembling, discharging and completing the finished metal pipe formed with the branch pipe chamfered through the milling chamfering step in a fixed vise.

The present invention integrates a device for forming a branch pipe of a metal pipe into a single device, reduces work flow, unifies workers, and enables production of uniform product quality. Overcoming and preventing damage to raw materials due to shortening of the moving distance of raw materials, it is possible to produce products of high quality by improving product loosening and producing horizontally and vertically when processing raw materials. Plug) By placing a large number of metal pipes at once, it is possible to quickly combine the parts that depended on the human eye with the drawing bolts through the position control jig, thereby improving productivity and minimizing defect rates by reducing work time. A large number of molds (plugs) can be inserted into the metal pipe in one process, and the number of processes for forming the branch pipes is greatly reduced by repeatedly inserting and removing plugs to form a single branch pipe so that mass production is possible. In addition, since there is no change in the position of the metal pipe that is set vertically and horizontally, the branch pipes in which the vertical and horizontal are formed correctly can be uniformly formed.

1 is an overall side view of a branch pipe forming apparatus of a metal pipe according to the present invention.
2 is an enlarged view of a main part of a support of a branch pipe forming apparatus of a metal pipe according to the present invention.
3 is an enlarged view of a main portion of a drawing die of a branch pipe forming apparatus of a metal pipe according to the present invention.
4 is an enlarged view of a main portion of a position control jig of a branch pipe forming apparatus of a metal pipe according to the present invention.
5 is an enlarged front view of a main portion of a drawing means of a branch pipe forming apparatus for a metal pipe according to the present invention.
Figure 6 is an enlarged side view of the main portion of the drawing means of the branch pipe forming apparatus of the metal pipe according to the present invention.
7 is a schematic diagram showing a forming procedure of a branch pipe of a branch pipe forming apparatus of a metal pipe according to the present invention.
8 is a block diagram of a molding method using a branch pipe forming apparatus for a metal pipe according to the present invention.

Advantages and features of the present invention, and methods for achieving them will be clarified with reference to embodiments described below in detail together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in many different forms.

In this specification, the present embodiment is provided to make the disclosure of the present invention complete, and to fully inform the scope of the invention to those skilled in the art to which the present invention pertains. And the invention is only defined by the scope of the claims. Thus, in some embodiments, well-known components, well-known operations, and well-known techniques are not specifically described in order to avoid obscuring the present invention.

The same reference numerals refer to the same components throughout the specification. In addition, the terms (mentioned) used in this specification are for describing the embodiments and are not intended to limit the present invention. In the present specification, the singular form also includes the plural form unless otherwise specified in the phrase. Also, components and actions recited as “includes (or is provided with)” do not exclude the presence or addition of one or more other components and actions.

Unless otherwise defined, all terms (including technical and scientific terms) used in the present specification may be used as meanings commonly understood by those skilled in the art to which the present invention pertains. In addition, terms that are defined in a commonly used dictionary are not ideally or excessively interpreted unless they are defined.

Hereinafter, with reference to the accompanying drawings will be described in detail the technical characteristics of the branch pipe forming apparatus of the metal pipe according to the present invention and an embodiment of a molding method using the same.

1 is an overall side view of a branch pipe forming apparatus of a metal pipe according to the present invention, FIG. 2 is an enlarged side view of main parts of a support of a branch pipe forming apparatus of a metal pipe according to the present invention, and FIG. 3 is a metal pipe according to the present invention Fig. 4 is an enlarged view of a main part of a drawing mold of a branch pipe forming apparatus, and Fig. 4 is an enlarged view of a main part of a position control jig of a branch pipe forming apparatus of a metal pipe according to the present invention, and Fig. 5 is a branch pipe of a metal pipe according to the present invention. Fig. 6 is an enlarged front view of a main portion of a drawing device of a forming device, and Fig. 6 is an enlarged side view of a main portion of a drawing device of a branch pipe forming device according to the present invention, and Fig. 7 shows a branch of a branch forming device of a metal pipe according to the present invention. Fig. 8 is a block diagram of a molding method using a branch pipe forming apparatus for a metal pipe according to the present invention.

The metal pipe branch pipe forming apparatus according to the present invention integrates three processes to minimize the limitations of the work place, and to form a quick branch pipe through accurate positioning of the branch pipe through a position control jig rather than a simple entry of the drawing mold. As this is possible, mass production is possible and high-quality products can be produced. As shown in FIG. 1, the holding frame 100, the moving cart 200, the drawing mold 300, the support 400, and the pipe arrangement It consists of a supply frame 500, a drawing bolt 600, and a branch pipe forming unit 700.

1 and 2, when the holding frame 100 is formed to be elongated in the longitudinal direction corresponding to the length of the metal pipe for forming the branch pipe, when forming the branch pipe of the metal pipe, the inside of the metal pipe The moving rail 110 is symmetrically formed in the front and rear so that the moving cart described below is rail-coupled and horizontally moved to the upper end formed in the longitudinal direction corresponding to the length of the pipe to enter the section to be described below, which enters into It is provided to keep the pipe vertical and horizontal. That is, when the support, which will be described later, enters the inside of the metal pipe by the moving cart, the metal pipe is intended to maintain horizontal and vertical while moving corresponding to the length toward the front side to be processed to form the branch pipe. As a result, the holding frame 100 is accommodated while maintaining horizontal and vertical to supply a metal pipe to be described later, and is to be performed during the process of forming a branch pipe serving as an opposite side of the pipe placing supply frame for supplying.

The mobile truck 200 is provided to enter the inside of the metal pipe supplied to process the branch pipe by fixing the support to be described later, as described above, to the moving rail 110 formed on the top of the holding frame 100 The rail is coupled to move horizontally, and an angle-adjustable fixed chuck 210 is formed at the top. Here, the fixed chuck of the moving cart 200 can adjust the angle of the support through the angle adjustment, so it is possible to arbitrarily adjust the angle of formation of the branch pipe in the pipe, and when the angle of the branch pipe does not match the required angle, the above By adjusting the angle of the fixed chuck, the angle of the pipe can be corrected to reduce the occurrence of defective products. In addition, the fixed chuck 210 is capable of forming branch pipes at various angles of 360°, so that it is possible to express precision and supplement the angle control function of the branch pipes.

The support 400 penetrates through the perforated hole so that the periphery of the hole is plastically deformed, whereby the drawing mold 300 to form a branch pipe is fixed to a drawing position coinciding with the hole side of the perforated rectangle inside the metal pipe. It is formed to minimize the inner side deformation of the pipe together with the role of being inserted into the metal pipe of the, as shown in Figure 2, is inserted into the fixed chuck 210 of the mobile cart 200, one end is the movement The position control jig 410 is formed to enter the inside of the pipe according to the movement of the bogie 200, and to allow the drawing mold 300 to be placed in the tip of the inside of the pipe. Here, the position control jig 410 formed at the front end of the support 400 is fixed to move to a drawing position for plastically deforming and forming a branch pipe of a metal pipe by combining a plurality of drawing molds, and having a rectangular hole. As the pipe moves horizontally, the support moves into the metal pipe.

Here, as shown in FIG. 4, the drawing die 300 is formed with a cone-shaped head portion 310 in which a bolt hole 312 is formed in the center of the upper surface, and is formed in a square shape on the lower surface of the head portion 310. Departure prevention protrusions 314 are formed. And, the position control jig 410, as shown in Figure 3, is formed of a plate body at the tip of the support that is introduced into the pipe so that the departure-preventing projection 314 of the drawing mold 300 is sliding in the center of the plate body. A position control groove 412 having a long hole shape to be fitted is formed.

Accordingly, the pull-out mold 300 is coupled to the position control groove 412 of the position control jig 410 with at least one or more departure preventing protrusions 314, and a branch pipe is formed as the support 400 enters the pipe. It is provided to be accurately positioned at the position of a hole drilled with a long hole, and it is possible to mass-produce a number of branch pipes within a short working time.

Meanwhile, as shown in FIG. 1, the pipe inside supply frame 500 is formed so that a metal pipe is accommodated on the opposite side of the holding frame 100 and horizontally moved to supply the metal pipe to form a branch pipe. Here, the pipe inside the supply frame 500 of the metal pipe for forming the branch pipe by adjusting the hydraulic up and down by a lifting device (sign omitted) to match the height of the working means for forming the branch pipe in the pipe It is also preferable to move up and down, which is the height of the height position and the position capable of maintaining the horizontal state.

The branch pipe forming unit 700 is formed between the holding frame 100 and the pipe inside supply frame 500 to the metal pipe received from the pipe inside supply frame 500 to the perforation and drawing mold 300 It is provided to form a branch pipe by drawing and chamfering by combining a drawing bolt 600, and as shown in FIG. 1, the branch pipe forming unit 700 is composed of a milling means 710 and a drawing means 720. do.

As shown in FIG. 7, the milling means 710 fixes a metal pipe to form a rectangular perforated hole to be plastically deformed as the branch pipe is drawn through the drawing mold, and after the branch pipe is formed, the branch pipe is formed. It is provided to chamfer the upper surface of the, a fixed vise 712 for fixing the rear side close to the position where the branch pipe of the pipe supplied to the pipe mounting supply frame 500 to the bed side is to be formed, the After drilling a hole of a long hole for forming a branch pipe on the upper surface of the pipe on the front side fixed by the fixed vise 712, or after the branch pipe is pultruded, it is fixed again by a fixed vise to chamfer the top of the branch pipe. Is prepared. The reason for this chamfering is to facilitate the work and to improve the work quality when joining by welding or the like by joining the branch pipe to the end of the branch pipe formed around the metal pipe. If there is no chamfering, the end face of the branch pipe is rough, and a phenomenon such as burr occurs during the drawing process, and as a result, there is a problem in that the work quality is deteriorated due to the fact that the connection with the branch pipe does not require airtightness or the welding area is large. to be.

Here, the rectangular perforated hole formed by the milling means 710 is formed when the branch pipe to which the branch pipe of the metal pipe is connected is formed. This is to prevent the cracking phenomenon because the steel sheet of the pipe cannot be overcome with the surrounding tensile strength due to plastic deformation. That is, if the hole is punched in a circular shape, a crack occurs because the tensile strength cannot be overcome with respect to the length of the outer circumference and the top of the metal pipe. That is, the outer peripheral edge of the pipe is weakly in the tensile strength and is formed longer than the left and right sides of the upper end of the pipe to form a rectangle to be suitable for the tensile strength, so that the tensile strength is transmitted evenly around the entire rectangle and the branch pipe is formed without defect. Can be.

The drawing means 720 receives the drawing mold from the position control jig of the support and fastens the inner periphery of the rectangular perforated hole while the drawing mold penetrates the rectangular perforated hole by vertical pulling by hydraulic by fastening with the drawing bolt. It is formed to protrude to the outside, and is formed on the other side of the bed opposite to the milling means 710, and a pipe with a hole in a long hole perforated to form a branch pipe by the milling means 710 is a fixed vise 712. As the fixing is released, the horizontal movement moves horizontally toward the support, and the support 400 fixed to the drawing position is drawn inward with a plurality of drawing molds coupled by horizontal movement of the metal pipe, and into the metal pipe. When the drawn drawing mold 300 is located in the perforated hole of the oblong tongue of the metal pipe, the drawing bolt 600 and the drawing mold are combined through the punched hole, and the head of the drawing bolt 600 is drawn at the drawing position It is provided so that the branch pipe is formed while the drawing mold 300 is vertically pulled through the hole of the long hole in the pipe and passes through the hole of the long hole while the drawing mold 300 is pulled vertically.

Here, as illustrated in FIGS. 5 and 6, the drawing means 720 corresponds to the outer periphery of the metal pipe in the left and right directions of the rectangular perforated hole, and the drawing of the drawing mold 300 by the drawing bolt 600 At the time, the metal pipe fixing portion 730 is formed to the left and right of the drawing ring 722 to which the drawing bolt 600 is coupled to prevent deformation of the metal pipe. That is, when the pull-out bolt is pulled while the left and right pipes of the hole drilled by the metal pipe fixing part 730 are pressed, when the metal around the perforated hole is plastically deformed and protrudes upward, The deformation of the center line and the outer periphery of the pipe is prevented through the metal pipe fixing part 730, so that even when a metal pipe having a plurality of branch pipes is produced, the straightness of the pipe can be maintained and there is no pipe deformation.

The metal pipe fixing part 730 is formed to the left and right of the draw ring 722 where the drawing bolt 600 is hooked, and the fixing part rail 731, the support part 732, the adjustment shaft 733, and the left and right screw handles 734, a fixed arm 735, a reinforcing arm 736, and a support inclined surface 737.

The fixing part rail 731 is formed long before and after the drawing ring 722 in the longitudinal direction corresponding to the lower width of the main body of the drawing means. The fixing part rail 731 is a configuration in which the fixing part arm 735 to be described later is rail-coupled to move the rail. On the other hand, the support portion 732 is fixed to the front and rear of the fixed portion rail 731, it is formed of a plate body. Here, the support portion 732 is formed to support the adjustment shaft 733 to be described later to idle.

The adjustment shaft 733 is coupled to both ends idly at the lower end of the support portion 732 described above, and left and right screws are formed. That is, after the fixed part arm 735 to be described later is coupled to the adjustment shaft 733, when the adjustment shaft 733 rotates forward, they are symmetrical to each other. Is formed to be narrowed. The left and right screw handles 734 are to control the rotation direction of the adjustment shaft so that the width of the fixing part is narrowed or enlarged by facing each other as described above, and fixedly coupled to the center of the adjustment shaft 733, The adjustment shaft 733 rotates idly.

On the other hand, the fixing part arm 735 is rail-coupled to the fixing part rail 731 to move the rail, is formed symmetrically to the left and right of the drawer ring 722, and protrudes downward, and an adjusting shaft formed with the left and right screws upwards. (733) screwed to the left and right is formed to move the rail in the opposite direction to the drawer ring 722 side in accordance with the adjustment of the left and right screw handle 734, the width is enlarged and reduced. In addition, the reinforcing arm 736 is formed to be coupled to the lower portion of the fixing portion arm 735 so that the contact area with the metal pipe is enlarged.

The fixed support arm 735 and the reinforcing arm 736 have a “지지” shaped support inclined surface 737 to correspond to a circular arc of the outer periphery of the metal pipe; thus forming an upper portion of the circular pipe to support the inclined surface 737 ), in the drawing process, during the drawing operation of the drawing mold, deformation of the pipe is minimized to maintain the straightness of the pipe, thereby minimizing product defects.

Forming method using the branch pipe forming apparatus of the metal pipe of the present invention according to such a configuration, as shown in Figures 7 and 8, pre-treatment step (S100), drilling step (S200), the first transfer step (S300) , Drawing mold preparation step (S400), Drawing mold inserting step (S500), Drawing mold positioning step (S600), Drawing step (S700), Second transfer step (S800), Milling chamfering step (S900), Finishing step ( S1000).

The pre-processing step (S100)

After receiving a plurality of metal pipes in the pipe inside supply frame 500, and after horizontally transferring the unit metal pipe to the milling means 710 of the branch pipe forming unit 700, the branch pipe is formed by a fixed vise 712. The metal pipe is fixed to the rear side where it will be.

The drilling step (S200)

Through the pretreatment step, a hole of a long hole is drilled by the milling means 710 to a position where the branch pipe is to be formed.

The first transfer step (S300)

After releasing the metal pipe in which the hole of the long hole is perforated in the fixing vise 712 to the position where the branch pipe is formed through the perforation step, the position where the hole of the long hole is perforated is located on the same vertical line as the drawing position. It is horizontally transferred to the drawing means 720.

The drawing mold preparation step (S400)

It is formed on the opposite side of the drawing means 720 and prevents the square from forming at the bottom of the drawing mold 300 in the long hole-shaped position control groove 412 of the position control jig 410 formed on the front end of the support 400 to be horizontally moved. The projections 314 are fitted and coupled, but a plurality of supports corresponding to the branch pipes are pushed through the stepped step toward the perforated hole side of the long hole while the metal pipe horizontally moves the support fixed in the drawing position.

The drawing mold insertion step (S500)

The support 400 coupled to the plurality of drawing molds 300 is positioned in the position control jig 410 through the drawing mold preparation step to the inside of the metal pipe transferred to the drawing means 720 through the first transfer step It is located.

The drawing mold position adjustment step (S600)

The metal pipe is horizontally moved so that the tip of the support 400 fixedly coupled to the fixed chuck 210 formed on the upper end of the moving cart 200 horizontally moved by rail coupling on the upper portion of the retaining frame 100 continues to enter the metal pipe. While the drawing means 720 is positioned on the same vertical line as the hole of the long hole is punched so that the drawing mold 300 is located inside the metal pipe. Here, when the drawing mold is quickly located in the hole of the long hole, it is possible to quickly combine with the drawing bolt, and it is also the most important process in mass production since the branch pipe can be formed quickly.

The drawing step (S700)

Through the drawing die positioning step, from the drawing means 720 located on the same vertical line and the hole of the long hole and the drawing die 300 to the bolt hole 312 formed on the head portion 310 of the drawing die 300 The drawing bolt 600 is coupled, the head of the drawing bolt 600 is coupled to the drawing ring 722 of the drawing means 720, and the metal pipe fixing part 730 formed on the bottom surface of the drawing means is punched in a rectangle. Corresponding to the outer periphery of the metal pipes in the left and right directions of the hole, it is fixed to prevent deformation of the metal pipe when drawing, and the head of the drawing bolt 600 is pulled upward, and the drawing mold 300 is pulled out of the rectangular perforated hole. The metal pipe of the rectangular perforated hole outer edge is drawn (plastically deformed) and protrudes to form a branch pipe.

The second transfer step (S800)

Through the drawing step, the metal pipe on which the branch pipe which is not chamfered is formed at the top is transferred to the milling means 710 and the branch pipe so that they are positioned on the same vertical line, and fixed to the fixed vise 712.

The milling chamfering step (S900)

It is transferred through the second transfer step to uniformly process the irregular protrusion height of the top of the branch pipe of the metal pipe where the branch pipe is located on the same vertical line as the milling means 710 to facilitate branch pipe joining. That is, it is obvious that it is possible to perform drilling and chamfering together with one milling means, thereby preventing restriction of places due to unnecessary equipment and waste of cost.

The closing step (S1000) is

The finished product of a metal pipe having a branch pipe chamfered through the milling chamfering step is disassembled in a fixed vise and discharged to complete it.

As described above, the forming method using the branch pipe forming apparatus of the metal pipe according to the present invention is a product of high quality in which the location of the branch pipe forming is uniform due to the fast working time and short moving copper wire for the formation of multiple branch pipes in one pipe. It is possible to produce and increase the production efficiency and increase the company's profit by placing the position control jig to enable rapid drawing and post-processing by quickly positioning the drawing mold with a rectangular perforated hole.

In other words, the present invention is an advantage that the drawing mold does not distract, and it is quickly approached with a rectangular hole, so that the drawing operation by the drawing means can be performed immediately, and the advantage of performing multiple processes at once is that of the branch pipe faster. Mass production is possible.

In the above, the present invention has been described in detail as one embodiment, but the scope of the present invention is not limited to this, and it is obvious that many modifications and corrections are possible to those of ordinary skill in the art. It will be included in the examples and the substantial equivalent range.

100: retaining frame 110: moving rail
200: moving cart 210: fixed chuck
300: drawing die 310: head
312: bolt ball 314: departure prevention projections
400: support 410: position control jig
412: Positioning control groove 500: Pipe rest supply frame
600: drawing bolt 700: branch pipe forming unit
710: milling means 712: fixed vise
720: drawing means 722: drawing hook
730: metal pipe fixing part 731: fixing part rail
732: support 733: adjustment shaft
734: left and right screw handle 735: fixed arm
736: Reinforcement arm 737: Support slope
S100: Pre-treatment step S200: Drilling step
S300: First transfer step S400: Pull-out mold preparation step
S500: Drawing mold insertion step S600: Drawing mold positioning step
S700: Drawing stage S800: Second transfer stage
S900: Milling chamfering step S1000: Finishing step

Claims (5)

A moving frame 110 formed symmetrically in the front and rear on the upper end formed in the longitudinal direction corresponding to the length of the pipe, and a holding frame 100 provided to maintain vertical and horizontal pipes;
A moving cart 200 that is rail-coupled to the moving rail 110 formed on the upper end of the holding frame 100 and horizontally moved, and an angle-adjustable fixed chuck 210 is formed on the upper end;
It is inserted into the fixed chuck 210 of the mobile bogie 200, one end enters into the pipe according to the movement of the mobile bogie 200, and the drawing mold 300 is placed at the tip end entering the pipe. A support 400 having a position control jig 410 formed thereon;
A metal pipe supply frame 500 accommodated in the metal frame on the opposite side of the holding frame 100, and provided to move horizontally to supply a branch pipe to the metal pipe;
It is formed between the holding frame 100 and the pipe rest supply frame 500 and is formed by combining the drawing bolt 600 with the perforation and the drawing mold 300 to the metal pipe supplied from the pipe rest supply frame 500. And a branch pipe forming unit 700 provided to form a branch pipe by chamfering.
According to claim 1,
The drawing mold 300 is formed with a cone-shaped head portion 310 with a bolt hole 312 formed in the center of the upper surface, and is formed with a square departure preventing protrusion 314 on the lower surface of the head portion 310. ;
The position control jig 410 is formed of a plate body at the front end of a support that is introduced into the pipe, and the position control groove in the shape of a long hole in which the detachment preventing protrusion 314 of the drawing mold 300 is slidably engaged in the center of the plate body ( 412) is formed,
The draw mold 300 is coupled to the at least one or more departure preventing projections 314 in the position control groove 412 of the position control jig 410 so that the support 400 is fixed in the draw position, and the fixed chuck of the moving cart After fixing to fix the perforation angle, it is possible to move the metal pipe in a vertically horizontal state, so that the position control jig 410 formed at the front end of the support is drilled into the long hole where the branch pipe will be formed inside the metal pipe. Branch pipe forming apparatus of a metal pipe, characterized in that it is provided to be accurately located at the position of the hole.
According to claim 1,
The branch pipe forming unit 700 is formed with a fixing vise 712 for fixing a rear side close to a position where a branch pipe of a pipe supplied to the pipe rest supply frame 500 is to be formed on one side of the bed. After drilling a hole of a long hole for forming a branch pipe on the upper surface of the pipe on the front side fixed by the fixed vise 712, or after the branch pipe is pultruded, it is fixed again by a fixed vise to chamfer the top of the branch pipe. A milling means 710 provided to do so;
When the pipe is formed on the other side of the bed opposite to the milling means 710, and a hole with a long hole is drilled to form a branch pipe by the milling means 710, the fixing vise 712 releases the fixed pipe and then moves horizontally. The support 400 is drawn in a state in which a plurality of drawing molds are coupled to the inside of the pipe, and a drawing bolt 600 is formed at the bottom of the main body by combining the drawing mold 300 and the drawing bolts 600 drawn into the pipe. A metal characterized by being formed by a drawing means 720 provided to form a branch pipe while the drawing mold 300 is pulled through the hole 722 through the hole of the long hole inside the pipe while being pulled into the ring 722 Pipe branch forming device.
According to claim 3,
The drawing means 720 corresponds to the outer periphery of the metal pipe in the left and right directions of the rectangular perforated hole, when drawing the drawing die 300 by the drawing bolt 600, the drawing bolt 600 to prevent deformation of the metal pipe ) Is a metal pipe fixed portion 730 is formed to the left and right of the draw ring 722 is coupled,
The metal pipe fixing part 730 includes a fixing part rail 731 formed long in the longitudinal direction corresponding to the lower width of the main body of the drawing means before and after the drawing ring 722;
The fixing part rail 731 is fixed to the front left and right, and a support portion 732 formed of a plate body;
An adjustment shaft 733 having both ends coupled to idle at the lower end of the support portion 732 and having left and right screws formed thereon;
A left and right screw handle 734 which is fixedly coupled to the center of the adjustment shaft 733 and that the adjustment shaft 733 rotates idly;
The fixed part rail 731 is rail-coupled to move the rail, and the pull-out ring 722 is symmetrically formed to the left and right to protrude downward, and the left and right screws are screwed to the left and right of the adjustment shaft 733 on which the left and right screws are formed. A fixing part arm 735 formed such that the widths are enlarged and reduced by moving the rails in the opposite direction to the pulley ring 722 side according to the adjustment of the screw handle 734;
A reinforcing arm 736 formed to be coupled to the lower portion of the fixed arm 735 to enlarge the contact area with the metal pipe;
Branch pipe forming apparatus of a metal pipe, characterized in that the support portion 735 and the reinforcing arm (736) formed on the lower surface of the metal pipe outer circumferential periphery of the "∧" shaped support inclined surface (737).
In the method of forming a branch pipe of a metal pipe,
After receiving a plurality of metal pipes, and after horizontally transferring the unit metal pipe to the milling means 710 side of the branch pipe forming unit 700, the metal pipe is fixed to the rear side where the branch pipe is to be formed by the fixing vise 712. A pre-processing step (S100);
A perforation step (S200) of perforating a hole of a long hole by a milling means 710 to a position at which the branch pipe is to be formed through the pretreatment step;
After releasing the metal pipe in which the hole of the long hole is perforated in the fixing vise 712 to the position where the branch pipe is formed through the perforation step, the position where the hole of the long hole is perforated is located on the same vertical line as the drawing position. A first transfer step (S300) of horizontally moving to the drawing means 720;
It is formed on the opposite side of the drawing means 720 and prevents the square from forming at the bottom of the drawing mold 300 in the long hole-shaped position control groove 412 of the position control jig 410 formed on the front end of the support 400 to be horizontally moved. The step of preparing the drawing mold is provided so that the projection 314 is fitted and coupled, but a number of supports corresponding to the branch pipe are pushed through the step fixed to the perforated hole side of the long hole while the metal pipe horizontally moves the support fixed in the drawing position. (S400) and;
The support 400 coupled to the plurality of drawing molds 300 is positioned in the position control jig 410 through the drawing mold preparation step to the inside of the metal pipe transferred to the drawing means 720 through the first transfer step And the drawing mold insertion step (S500);
The front end of the support 400 fixedly coupled to the fixed chuck 210 formed on the upper end of the moving cart 200 horizontally moved by rail coupling to the upper portion of the retaining frame 100 continuously enters and draws into the interior according to the horizontal movement of the metal pipe A drawing mold positioning step (S600) in which the drawing mold 300 is positioned inside the metal pipe to a position where a hole of a long hole is drilled on the same vertical line as the means 720;
Through the drawing die positioning step, the drawing means 720 located on the same vertical line and the hole of the long hole and the drawing hole 300 to the bolt hole 312 formed on the head portion 310 of the drawing die 300 The drawing bolt 600 is coupled, the head of the drawing bolt 600 is coupled to the drawing ring 722 of the drawing means 720d, and the metal pipe fixing part 730 formed on the bottom surface of the drawing means is punched in a rectangle. Corresponding to the outer periphery of the metal pipe in the left and right directions of the opened hole, fixed to prevent deformation of the metal pipe when drawing, and pulling the head of the drawing bolt 600 upward to pull the drawing mold 300 out of the rectangular perforated hole A drawing step (S700) in which a branch pipe is formed as the metal pipe of the rectangular perforated hole outer edge is drawn and protrudes together with the separation;
A second transfer step (S800) of transferring the metal pipe having the branch pipe formed through the drawing step so that the milling means 710 and the branch pipe are positioned on the same vertical line and fixed to the fixed vise 712;
Milling chamfering step to facilitate the branch pipe joining by uniformly processing the irregular protrusion height of the top of the branch pipe of the metal pipe which is transferred through the second transfer step and the branch pipe is located on the same vertical line as the milling means 710 ( S900);
A method of forming a branch pipe forming apparatus of a metal pipe comprising a; finishing step (S1000) of disassembling and discharging a finished product of a metal pipe having a branch pipe chamfered through the milling chamfering step in a fixed vise.

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