KR101796609B1 - manufacturing method and apparatus for flexible tube - Google Patents

manufacturing method and apparatus for flexible tube Download PDF

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Publication number
KR101796609B1
KR101796609B1 KR1020150066026A KR20150066026A KR101796609B1 KR 101796609 B1 KR101796609 B1 KR 101796609B1 KR 1020150066026 A KR1020150066026 A KR 1020150066026A KR 20150066026 A KR20150066026 A KR 20150066026A KR 101796609 B1 KR101796609 B1 KR 101796609B1
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South Korea
Prior art keywords
tube
outer wheel
wheel
cam
wrinkle
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KR1020150066026A
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Korean (ko)
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KR20160133229A (en
Inventor
박태중
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주식회사 디 에스 아이
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L11/00—Hoses, i.e. flexible pipes
    • F16L11/14—Hoses, i.e. flexible pipes made of rigid material, e.g. metal or hard plastics
    • F16L11/15—Hoses, i.e. flexible pipes made of rigid material, e.g. metal or hard plastics corrugated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
    • B29C53/22—Corrugating
    • B29C53/30—Corrugating of tubes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L51/00—Expansion-compensation arrangements for pipe-lines
    • F16L51/02—Expansion-compensation arrangements for pipe-lines making use of bellows or an expansible folded or corrugated tube

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)

Abstract

A flexible tube, a method of manufacturing the same, and an apparatus are disclosed.
A pair of annular wrinkles (127a) and a pair of annular wrinkles (127a) formed in parallel at both ends of the spiral wrinkles (127a) and the spiral wrinkles (127a) The productivity of the flexible tube and the flexible tube assembly including the flexible tube can be improved, the flow of the fluid can be smooth, and the coupling force between the end of the wrinkle and the adapter can be increased.

Figure R1020150066026

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a flexible tube,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flexible tube and a method and an apparatus for manufacturing the same. More particularly, the present invention relates to a flexible tube and an apparatus for manufacturing the same, To a flexible tube capable of easily attaching an adapter while shortening a manufacturing time of the flexible tube, and a manufacturing method and apparatus thereof.

Generally, the flexible tube is made of a stainless steel material and is divided into a type having a spiral shape as shown in FIG. 1 and a type having one annular shape as shown in FIG. Spiral wrinkles are mainly used for pipe joints requiring simple bending (eg, 90 degree bending), and types consisting of annular wrinkles are used for stretching in various directions (eg, axial, Displacement etc.) absorption and pipe joint.

The flexible tube of the above-described type including the spiral wrinkle and the annular wrinkle is manufactured by a hydraulic manufacturing (hydroforming) method and a roll manufacturing (mold rotating manufacturing) method.

3, the conventional apparatus for manufacturing a flexible tube of the hydraulic manufacturing method has a structure in which the compression tube 1102 is compressed between the inner hydraulic nozzle 1101 and the mating side mold 1102 and is located outside the hydraulic pipe 1103 The annular wrinkles 1104 made of individual threads are successively made one by one on the stainless steel tube (see Patent Document 1). Such a manufacturing apparatus is capable of producing a flexible tube of a required length by continuously producing wrinkles on a tube, and it is possible to arrange a portion without wrinkles between wrinkles and wrinkles or both wrinkles, There is a falling problem.

In addition, the roll manufacturing method is a method in which a spiral or annular wrinkle is continuously processed while the tube passes through the rotary mold. This method allows the tube to pass through the rotary mold at a high speed, which is much higher than that of the hydraulic manufacturing method (see Patent Document 2).

4A to 4C, a tube 1108 for manufacturing supplied via a cater filter 1105 is attached to the offset device 1106 (see Fig. 4A) of the retainer 1109, The wrinkles 1104 are formed on the tube 1108 by the mold 1107. The wrinkles 1104 formed on the tube 1108 according to the type of the mold 1107 ) To spiral wrinkles or annular wrinkles. The mold (lower left side) in Fig. 4C is a mold 1107a for producing annular wrinkles, and the mold (lower right side) in Fig. 4C is a mold 1107b for producing spiral wrinkles.

The flexible tube manufacturing apparatus of the roll manufacturing method as described above is advantageous in productivity as compared with the flexible tube manufacturing apparatus of the hydraulic manufacturing method described above.

In the case where the first wrinkle is produced in the tube passing through the rotary mold by the above method, the wrinkle 1115 is processed without reaching the desired depth to the desired depth because of the rigidity of the tube itself as shown in Fig. 5, The subsequent wrinkles are gradually processed to reach a desired depth 1116. In order to perform the continuous operation in this normal operation state, the portion 1115 where the wrinkle depth is less than the formed depth should be cut off and discarded.

If the conventional roll manufacturing method causes the tube to reach the required depth at once, the tube will become wrinkled. If the degree is too great, the tube will be subjected to stress exceeding the rigidity limit, A processing method capable of increasing the productivity through continuous processing of the normal wrinkle portion 1116 has been demanded.

In addition, a long flexible tube machined continuously is cut to a required length and used. The thus cut flexible tube must have a tube end that is not corrugated to engage with other mechanical elements. Such a tube end is attached in such a manner that after the wrinkle is finished, the corrugated tube is cut to the required length and then the wrinkle-free tube, i.e., the tube end, is cut and welded to the required length.

Flexible tubes having such processed tube ends have been widely used in normal expansion and contraction piping, but when applied to a high pressure (for example, an air conditioner using a refrigerant operating at about 150 kg / m 2 or more), the stress There is a problem that the end of the corrugated portion and the welded portion of the tube end are damaged.

Conventionally, a method has been developed in which a separate adapter is welded to a corrugated tube in order to increase the coupling force with the corrugated tube and to easily connect the corrugated tube to the other machine elements, apart from the method of welding the corrugated tube to the corrugated tube. In the case of a flexible tube composed of wrinkles, the contact area between the ends of the wrinkles and the adapter is not uniform, so that welding is difficult. In the case of the flexible tube 1200 formed of annular wrinkles, 1220 are not uniformly applied to the contact surface between the corrugated portion 1210 and the adapter 1220 so that the corrugated portion 1210 and the adapter 1220 can not be uniformly welded.

That is, since the heat applied to the upper portion of the adapter 1220 is not uniformly transmitted to all the contact surfaces of the wrinkle portion 1210 and the adapter 1220, all the contact surfaces, that is, the contact surface at a distance from the portion to which heat is applied, There is a problem that particles contained in the fluid are trapped between the corrugated portion 1210 and the adapter 1220 that are not in contact with each other and the corrugated portion 1210 and the adapter 1220 obstruct the flow of the fluid.

Korean Registered Patent No. 10-0333783 (registration notice on Apr. 25, 2002) Korean Registered Patent No. 10-0098803 (Registered on Jan. 01, 1996)

SUMMARY OF THE INVENTION The present invention has been made to solve the problems of the prior art as described above, and it is an object of the present invention to provide an adapter for smoothly flowing a fluid while improving the productivity of the flexible tube, an adapter for coupling the end of the wrinkle to another mechanical element, Tube, a manufacturing method thereof, and an apparatus therefor.

The above object of the present invention can be achieved by a spiral wrinkle forming apparatus comprising: a spiral wrinkle portion in which a pressed bone and an unpressed mountain are formed in parallel to each other in a spiral shape; And a pair of annular corrugations formed on both ends of the helical wrinkle portion in parallel with one another in the longitudinal direction and perpendicular to the respective crushed corrugated and unpressed mountains.

Another object of the present invention is achieved by an adapter assembly having an adapter attached to both ends of an annular wrinkle portion of a flexible tube, the adapter assembly having a shape narrowing toward the outside.

According to one embodiment of the present invention, an end portion of the annular wrinkle portion which does not contact the spiral wrinkle portion can be cut corresponding to the thickness of the adapter inlet.

It is another object of the present invention to provide an apparatus and a method for manufacturing a cigarette comprising: a tube supply unit provided with a caterpillar; A tube manufacturing portion in which a corrugated portion composed of a spiral wrinkle portion and an annular wrinkle portion is formed in a tube supplied from the tube supply portion; And a tube withdrawing portion having a caterpillar and having a corrugated portion drawn out, wherein the tube manufacturing portion includes: an inner wheel rotatably installed around a hollow shaft; A circular outer wheel including a guide line formed on a circumferential surface having a thickness varying in a radial direction along the inner surface of the circumference, Each of the motors rotating the inner wheel and the outer wheel in the same direction at the same or different rotational speeds; A cam having a follower moving up and down in the inner wheel along the guide line; A mold for producing a wrinkle in which a wrinkle portion composed of a spiral wrinkle portion and an annular spiral portion is formed in the tube inserted in the hollow shaft provided on the cam; And a fixed shaft which is eccentrically and partly rotatably installed in the inner plate of the inner wheel.

According to one embodiment of the present invention, the cam further comprises a spring fixed to the inner wheel and having one end fixed to the inner wheel and a force acting in a direction of pushing each other.

According to another embodiment of the present invention, the tube supply portion and the tube draw portion can continuously supply and withdraw the tube to the mold for making a wrinkle and the hollow shaft.

According to another embodiment of the present invention, the tube supply portion and the tube draw portion can supply and withdraw the tubes at different speeds or at the same speed so that the tube manufacturing portion can produce spiral wrinkles or annular wrinkles in the tube have.

Another object of the present invention is to provide a method of manufacturing a hollow shaft, comprising: a first step in which a tube is supplied from a tube supply part to a hollow shaft in a state in which a follower is in contact with a guideline of an outer wheel and a cam is located at a top point; The cam for contacting the follower to the guide line of the outer wheel is rotated from the uppermost point to the lowermost point by the rotation of the inner wheel and the outer wheel at different speeds so that the corrugating mold gradually presses the tube, A second step in which the bone is manufactured; The contact position between the guide wheel and the follower of the outer wheel is changed by the rotation of the inner wheel or the outer wheel so that the tube supply part and the tube drawing part are driven in a state in which the cam is moved to the uppermost point, A third step in which the negative acid is transferred by a distance to be manufactured; The cam for contacting the follower to the guide line of the outer wheel is rotated from the uppermost point to the lowermost point by the rotation of the inner wheel and the outer wheel at different speeds so that the corrugating mold gradually presses the tube, A fourth step in which an acid and a second bone are produced; The inner wheel and the outer wheel are rotated at the same speed while the cam is positioned at the lowest point, and the tubes are supplied and drawn at different speeds by driving the tube supply part and the tube drawing part, so that a spiral wrinkle part 5 < / RTI > The inner wheel or the outer wheel is rotated to change the contact position between the guide line and the follower of the outer wheel to move the inner wheel and the outer wheel at different speeds A sixth step in which the cam for contacting the follower to the guide line of the outer wheel is moved from the uppermost point to the lowermost point by rotation, and the corrugation mold gradually presses the tube to produce the second end of the annular corrugation; The inner wheel or the outer wheel is rotated to change the contact position with the guide line and the follower of the outer wheel so that the tube supply portion and the tube draw portion are driven in a state where the cam is moved to the uppermost point, A seventh step in which the acid is transferred by a distance to be manufactured; And a cam, which is in contact with a guiding line of the outer wheel, is moved from the uppermost point to the lowermost point by rotation of the inner wheel and the outer wheel at different speeds so that the corrugating mold presses the tube gradually, And an eighth step in which the last acid and the bone are produced.

According to one embodiment of the present invention, the second step, the fourth step, the sixth step, and the eighth step are performed by rotating the inner wheel and the outer wheel at different speeds, Is initiated to progressively approach the tube for making a wrinkle; The eccentricity of the cam is increased by subsequent rotation of the inner wheel and the outer wheel at different speeds so that the corrugating mold gradually reaches the maximum depth by pressing the tube; And rotating the inner wheel and the outer wheel by one rotation while the maximum eccentricity of the cam is maintained and the molding die for forming the wrinkles presses the tube to the maximum depth.

According to the present invention, by forming the flexible tube with the spiral wrinkle and the annular wrinkle formed continuously at both ends thereof and attaching the adapter for connecting with the other mechanical elements at both ends thereof, it is possible to improve the productivity of the flexible tube, And it is possible to facilitate the welding with the adapter.

In addition, the present invention proposes to gradually increase the width of the inlet of the adapter connected to the annular wrinkle of the flexible tube, thereby minimizing the contact resistance with the fluid and evenly distributing heat applied during welding, All of which are welded to each other, thereby doubling the binding force and preventing particles or the like from being caught between the wrinkles and the adapter.

Figure 1 is a side view of a conventional flexible tube of the type consisting of a spiral wrinkle.
Figure 2 is a side view of a conventional flexible tube of the type consisting of annular wrinkles.
3 is a schematic view of a conventional flexible tube manufacturing apparatus of a hydraulic manufacturing method.
4A to 4C are schematic views of a flexible tube manufacturing apparatus of a conventional roll manufacturing method.
5 is a side view of a conventional flexible tube.
FIG. 6 is a schematic view showing a coupling structure of a conventional folded portion of a flexible tube and an adapter. FIG.
7 is an exemplary view of an adapter assembly in which a flexible tube and an adapter are coupled according to an embodiment of the present invention.
8 and 9 are a plan view and a side view of an apparatus for manufacturing a flexible tube according to an embodiment of the present invention.
Fig. 10 is a perspective view of the tube manufacturing portion shown in Figs. 8 and 9. Fig.
Fig. 11 is a partially exploded perspective view of the tube making section disclosed in Figs. 8 and 8. Fig.
Fig. 12 is an exploded perspective view of the tube manufacturing unit disclosed in Figs. 8 and 9. Fig.
13 is a cross-sectional view of the tube manufacturing portion shown in Figs. 8 and 9. Fig.
Fig. 14 is a front view showing a state in which a spring is embedded between the cam and the inner plate shown in Figs. 8 and 9. Fig.
15 is a process diagram showing a process of manufacturing a flexible tube according to the present invention.
16 is a process diagram showing a process of manufacturing the annular wrinkle portion manufactured in FIG.
17A is a view showing a state in which a follower contacting the guideline is positioned in the waiting section.
17B is a view showing a state in which a follower contacting the guideline is positioned in a manufacturing entrance zone.
17C is a view showing a state in which a follower contacting the guideline is located in a manufacturing section.
17D is a view showing a state in which a follower contacting the guideline is positioned at the end stage of the manufacturing section.
17E is a view showing a state in which a follower contacting the guideline is positioned in the manufacturing maintenance section.
17F is a view showing a state in which a follower contacting the guideline is positioned in the departure section.
FIG. 17G is a view showing a state in which a follower contacting the guideline is positioned in the step of entering the transport section.
17H is a view showing a state in which a follower contacting the guideline is positioned at the end of the transport section.

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

7 is an exemplary view of an adapter assembly in which a flexible tube and an adapter are coupled according to an embodiment of the present invention.

7, the flexible tube according to the embodiment of the present invention and the adapter assembly to which the adapter is coupled include a spiral wrinkle portion 127a (see FIG. 1) and a spiral wrinkle portion 127a A pair of annular wrinkles 127b (see Figs. 2, 5 and 6) in which two pressed bones 127c and one un-pressed mountain 127d are annularly formed at both ends in the longitudinal direction, So that the manufacturing process can be simplified and the fluid can flow along the inclined surface of the spiral wrinkle when installed vertically.

In addition, the adapter assembly in which the flexible tube and the adapter are combined according to the embodiment of the present invention further includes a pair of adapters 500 attached to both ends of the annular wrinkle portion 127b, Connection is easy. In addition, since the adapter 500 has a gradually narrowing shape toward the outside, collision between the tube, that is, the adapter 500 and the fluid can be minimized to induce a smooth flow.

At this time, the angle (A) gradually narrows toward the inlet 510 portion of the adapter 500, that is, toward the outside of the adapter 500 is preferably 30 degrees.

The end of the annular wrinkle portion 127b which does not contact the spiral wrinkle portion 127a is cut corresponding to the thickness of the inlet 500 of the adapter 500 so that the tube 500 and the adapter 500 ) Is minimized to prevent the flow of the fluid or the trapping of various particles.

In the above embodiment, the annular wrinkle portion 127b contacting both ends of the spiral wrinkle portion 127a has been described as being composed of one acid and two bones. However, the present invention is not limited to this and the present invention is not limited thereto, Can be arbitrarily adjusted.
In the above embodiment, the angle A gradually narrows toward the entrance 510 of the adapter 500, that is, toward the outside of the adapter 500 is 30 degrees. However, the present invention is not limited thereto (A) gradually narrowing toward the portion of the inlet 510 of the adapter 500, that is, the outside of the adapter 500 may have a range of 24 to 75 degrees.

8 and 9 are a plan view and a side view of an apparatus for manufacturing a flexible tube according to an embodiment of the present invention, Fig. 10 is a perspective view of the tube manufacturing unit disclosed in Figs. 8 and 9, 8 and 9, Fig. 13 is a cross-sectional view of the tube manufacturing section disclosed in Figs. 8 and 9, and Fig. 14 is a cross-sectional view of the tube manufacturing section shown in Figs. 8 and 9 And is a front view showing a state in which a spring is embedded between the cam and the inner plate.

As shown in FIGS. 8 to 14, an apparatus for manufacturing a flexible tube according to an embodiment of the present invention includes a tube supply unit 200 provided with a caterpillar 210 and supplied with a tube 126 to be manufactured, The tube manufacturing part 300 and the caterpillar 410 are manufactured in which the tube 126 is formed with the wrinkle part 127 composed of the annular wrinkle part 127b, the spiral wrinkle part 127a and the annular wrinkle part 127b And a tube withdrawing portion 400 through which the tube 126 from which the wrinkle portion 127 is manufactured is drawn out. The tube supply part 200 and the tube manufacturing part 300 and the tube drawing part 400 are arranged in a straight line in order to manufacture the wrinkle part 127 in succession to the tube 126 to be supplied.

As shown in Figs. 8 and 9, the tube supply part 200 includes a pair of rubber belts 211 that are vertically disposed to supply the tubes 126, Two rotating shafts 213 to which two gears 212 to be engaged with the belt 211 are coupled and pulleys 214 coupled to two rotating shafts 213 and coupled to a power source such as a motor 215 The tube 126 to be manufactured can be supplied at a required speed in accordance with the process.

10 to 14, the tube manufacturing unit 300 includes an inner wheel 2 rotatably installed around the hollow shaft 5, and an inner wheel 2 rotating around the hollow shaft 5 as an inner wheel 2 A circular outer wheel 3 including a guide line 7 formed on a circumferential surface having a thickness 71 varying in a radial direction along the inner surface of the circumference, A power source such as each of the motors 8 and 9 that rotates the inner wheel 2 and the outer wheel 3 in the same direction at the same or different rotational speeds and a power source such as the inner wheel 2 And a tube 126 inserted in a hollow shaft 100 provided on the cam 111. The spiral wrinkle 127a and the annular spiral 127b And a cam 111 is eccentrically formed in the inner plate 22 of the inner wheel 2 so as to be partly rotatable The wrinkle portion 127 composed of the annular wrinkle portion 127b, the spiral wrinkle portion 127a and the annular wrinkle portion 127b is continuously manufactured in the tube 126 can do.

As shown in Figs. 8 and 9, the tube withdrawing portion 400 includes a caterpillar 410, and includes a pair of rubber belts 411 arranged vertically and pulling out the tube 126, Two rotary shafts 413 to which two gears 412 interlocked with the rubber belt 411 are coupled and a pulley 414 coupled to the two rotary shafts 413 and interlocked with a power source such as a motor 415 The tube 126 manufactured according to the process can be taken out at a necessary speed.

Specifically, the tube manufacturing section 300 is installed in the frame 114 such that the hollow shaft 5 is placed in line with the tube supply section 200 and the tube drawout section 400 as shown in FIGS. 8 and 9 The tube 126 to be manufactured is moved along the axis line 4 as shown in FIG. The inner wheel 2 is mounted on the outer circumferential surface of the hollow shaft 5 serving as the rotation center via the bearing 51. [ A pulley gear 21 is formed on the outer peripheral surface of the inner wheel 2 so as to be driven by a timing belt and interlocked with a pulley 81 connected to the motor 8 of Figs. The inner wheel 2 has a rotation surface 6 on which the outer wheel 3 is rotatably mounted with the bearing 33 interposed therebetween. An inner plate (22) in the form of a circular plate fitted to the hollow shaft (5) is fixed to the inner wheel (2). Sprockets and chains or one or more gears may be used instead of power transmission means such as timing belts and pulleys.

The outer wheel 3 is installed to rotate along the rotation surface 6 provided on the inner wheel 2 with the hollow shaft 5 as the center of rotation as shown in Figs. The outer wheel 3 is formed with a pulley gear 31 so that it can be driven by a timing belt on the outer circumferential surface and interlocks with a pulley 91 connected to the motor 9 of Figs. The outer wheel 3 also has a guide line 7 having a thickness 71 which varies radially along the inner surface of the circumference. The guidewire 7 may be machined directly to the outer wheel 3 but may be machined inside a separate rim 32 having a circular shape so that it can be replaced when various different corrugation depths are required.

The inner wheel 2 and the outer wheel 3 are rotated by the pulleys 81 and 91 connected to the respective motors 8 and 9 so that the inner wheel 2 and the outer wheel 3 can be rotated in the same direction, Power is transmitted to the belt. The motors 8 and 9 connected to the pulleys 81 and 91 are fixed to the frame 114. Examples of the motor include a stepping motor, a servo motor, and the like.

Since the guide line 7 formed on the inner wall of the rim 32 which is fastened to the outer wheel 2 by the bolt fastening method forms an elliptical shape rather than a complete circular shape with respect to the axial center line 4 of the hollow shaft 5 , The follower 100 moving along the guide line 7 moves up and down. That is, the distance between the follower 100 and the shaft centerline 4 is close to the distance. The cam 111 including such a moving body 100 is fixed to an inner plate 22 coupled to the inner wheel 2 by a fixing shaft 113 in a fixing shaft hole 1131 formed eccentrically from the hollow shaft 5, So as to be rotatable. The cam 111 is provided with a mold mounting hole 123 for accommodating the mold 112 for manufacturing wrinkles so as to transmit the pressure generated by the motion generated by the fixed shaft 113 and the follower body 100 to the tube 126 to be manufactured ).

At this time, even if the center of the mold mounting hole 123 coincides with or does not coincide with the axial center line 4 of the hollow shaft 5 when the cam 111 remains at the uppermost point, i.e., the origin, The mold tip 125 of the tube 126 does not pressurize the tube 126.

A spring 124 having one end fixed to each of the cam 111 and the inner wheel 2 and having a force acting in a direction of pushing each other is provided as shown in Fig. The continuous contact between the moving body 100 and the guide line 7 can be made smooth.

The mold 112 for forming wrinkles, which is provided in the mold mounting hole 123 of the cam 111 and inserted into the hollow shaft 5 and through which the tube 126 to be manufactured passes, is formed by the eccentricity of the cam 111, The mold tip 125 of the mold 112 is brought into contact with the tube 126 to be manufactured and a wrinkle portion 127 composed of a spiral wrinkle portion 127a and an annular wrinkle portion 127b is manufactured.

When the annular wrinkle portion 127b is manufactured, the tube 126 is moved to the tube feeding portion 200 and the tube drawing portion 400 in a state where the cam 111 is returned to the uppermost point And is moved by one pitch, that is, the width of one bone, in order to produce the next bone. In the case of manufacturing the helical wrinkle portion 127a, the tube 126 is configured such that the inner wheel 2 and the outer wheel 3 are positioned at the lowest position, that is, at the maximum depth of the wrinkle to be manufactured, Each time it rotates, it is moved by a distance corresponding to one pitch in conjunction with the tube feeding part 200 and the tube drawing part 400.

The movement of the tube 126 is explained as an example in which the movement of the tube 126 is interlocked with the tube feeding part 200 and the tube drawing part 400. However, The inner wheel 2 and the outer wheel 3 may be moved in a state in which the tube 126 is fixed, as the present invention is not limited thereto. In this case, the tube 126 is fixed to the tube feeder 200 through the tube feeder 400 or a separate jig, and the power of a power source such as a motor not shown is fed through a power transmission means such as a worm gear, And can be transferred to and moved to the main body 114.

In the above embodiment, it is preferable that the tube 126 supplied to the hollow shaft 5 and the mold 112 for making wrinkles has a form in which both ends thereof are not cut for continuous operation and can be continuously supplied.

In order to manufacture a tube 126 of a shape that can be supplied continuously, the present invention is characterized in that a narrow band-shaped steel plate is bent in a circular shape continuously along the longitudinal direction at the front end of the tube supply part 200, A tubing device for continuously welding both ends in the longitudinal direction can be separately provided.

FIG. 15 is a process diagram showing a process of manufacturing a flexible tube according to the present invention, and FIG. 16 is a process diagram showing a process of manufacturing an annular wrinkle portion manufactured in FIG. 15

15, when the follower 100 is brought into contact with the guide line 7 of the outer wheel 3 and the cam 111 is positioned at the top (waiting section) And is supplied to the hollow shaft 5 in conjunction with the supply part 200 (S1).

Subsequently, the tube 126 supplied to the hollow shaft 5 is rotated at different speeds of the inner wheel 2 and the outer wheel 3 in a state where the tube 126 is fixed by the tube supply part 200 and the tube drawing part 400 The cam 111 for contacting the follower 100 to the guide line 7 of the outer wheel 3 is moved from the uppermost point to the lowermost point by the rotation of the outer wheel 3 and the corrugation mold 112 gradually presses the tube 126 The first trough of the annular wrinkle 127b is produced (S2).

After the first trough of the annular wrinkle 127b is manufactured as described above, the rotation of the inner wheel 2 or the outer wheel 3 causes the contact position between the guide line 7 of the outer wheel 3 and the follower 100 The tube 126 is moved by one pitch, that is, the acid of the annular wrinkle portion 127b is produced in cooperation with the tube supply portion 200 and the tube drawing portion 400 in a state in which the cam 111 is moved to the uppermost point again, (S3).

The rotation of the inner wheel 2 and the outer wheel 3 at different speeds in the state in which the tube 126 having been transferred is fixed by the tube supply part 200 and the tube drawing part 400, The cam 111 for contacting the follower 100 to the guide line 7 of the nozzle 3 is moved from the uppermost point to the lowermost point so that the crease forming mold 112 gradually pushes the tube 126 to the annular wrinkle portion 127b, (S4). ≪ / RTI >

After the annular wrinkle 127b is formed in the tube 126 through the steps S1, S2 and S3 as described above, the inner wheel 2 and the outer wheel 3 are moved in the state in which the cam 111 is at the lowermost position. The spiral wrinkles 127a having a pitch of one pitch or more are manufactured while the tubes 126 are fed and drawn at different velocities in conjunction with the tube feeder 200 and the tube drawer 400 at the same speed (S5) .

At this time, the depth or the height of the ridge of the spiral wrinkle portion 127a manufactured in the tube 126 and the width of one pitch are equal to the thickness of the wrinkle-making mold 112, The vertical movement distance of the mold 112, the supply speed of the tube 126 supplied by the tube supply part 200, the drawing speed of the tube 126 drawn out by the tube drawing part 400, and the like.

After the spiral wrinkle 127a is produced in the tube 126 through the step S5, the inner wheel 2 or the outer wheel 3 is rotated by the rotation of the outer wheel 3 in order to manufacture another annular wrinkle 127b. When the contact position between the guide line 7 of the wheel 3 and the follower body 100 is changed and the cam 111 is moved to the topmost point and the inner wheel 2 and the outer wheel 3 move at different speeds The cam 111 for contacting the follower 100 to the guide line 11 of the outer wheel 3 is moved from the uppermost point to the lowermost point by the rotation of the outer wheel 3 to cause the crease forming mold 112 to gradually move the tube 126 A second trough is produced at the end of the annular wrinkle 127b (S6).

The guide wire 7 and the follower 100 of the outer wheel 3 are rotated by the rotation of the inner wheel 2 or the outer wheel 3 after the second end of the annular wrinkle 127b is manufactured, The tube 126 is moved by the distance that the annular wrinkle portion 127b can be made to be a mountain by interlocking with the tube supply portion 200 and the tube drawing portion 400 in a state where the contact position is changed and the cam 111 is moved to the uppermost point (S7).

The rotation of the inner wheel 2 and the outer wheel 3 at different speeds in the state in which the tube 126 having been transferred is fixed by the tube supply part 200 and the tube drawing part 400, The cam 111 for contacting the follower 100 to the guide line 7 of the nozzle 3 is moved from the uppermost point to the lowermost point so that the crease forming mold 112 gradually pushes the tube 126 to the annular wrinkle portion 127b, (S8). ≪ / RTI >

16, in the process of manufacturing the corrugated part 127 in the tube 126 as described above, the process of manufacturing the corrugation of the annular corrugated part 127b through steps S2, S4, S6, and S8 is as follows. The eccentricity of the cam 111 is started by the rotation of the inner wheel 2 and the outer wheel 3 at different speeds so that the wrinkle-making mold 112 gradually approaches the tube 126 ).

The subsequent rotation of the inner wheel 2 and the outer wheel 3 at different speeds increases the eccentricity of the cam 111 so that the corrugating mold 112 progressively presses the tube 126 to reach the maximum depth (S22).

Then, the maximum eccentricity of the cam 111 is maintained, and the inner wheel 2 and the outer wheel 3 make one revolution in a state in which the corrugated mold 112 presses the tube 126 to the maximum depth (S23).

Hereinafter, the process of manufacturing the annular wrinkle portion 127b constituting the wrinkle portion 127 of the flexible tube according to the embodiment of the present invention, that is, the one-pitch annular wrinkle portion will be described in detail with reference to Figs. 17A to 17H. 17A, depending on the position of the follower 100 of the cam 111 that contacts the outer wheel 3, that is, the guide line 7 of the rim 32, the waiting sections 1, A manufacturing entrance section 2, a manufacturing section 3, a manufacturing maintenance section 4, a departure section 5, and a transport section 6. FIG.

17A shows the waiting section 1, the manufacturing entrance section 2, the manufacturing section 3, the manufacturing maintenance section 4, the departure section 4 (FIG. 5, and a transfer section 6, and Figs. 17B to 17H show an enlarged view of a mold 112 for manufacturing a wrinkle for manufacturing the tube 126. Fig.

17A shows a state in which the tube 126 is manufactured for each section according to the position of the follower 100 contacting the guide line 7. [ When the number of revolutions of the inner wheel 2 and the outer wheel 3 is different by one wheel (for example, when the outer wheel 3 rotates 12 times while the inner wheel 2 is at 13 revolutions per minute) A phase difference is generated, and the annular wrinkle portion is produced by this phase difference.

17A shows a waiting section, which shows a waiting state in which the rotation of the outer wheel 3 has not started. Is the zero rotation state during 12 rotations of the outer wheel 3 and becomes the origin. And the wrinkle-making mold 112 is not in contact with any part of the tube 126 to be manufactured.

Fig. 17B shows a manufacturing entering period, and one rotation of 12 rotations of the outer wheel 3 is terminated, indicating an offset of 30 [deg.]. The relative positional change of the inner wheel 2 and the outer wheel 3 starts and the inner wheel 2 rotates more than one wheel in a state in which the outer wheel 3 is turning one wheel, A guide line 7 having a thickness 71 varying along the axis of the outer wheel 3 is disposed eccentrically on the inner wheel 2 so that the follower 100 of the cam 111 is rotated about the center of rotation of the inner wheel 2 and the outer wheel 3. [ The wrinkle-making mold 112 approaches the tube 126. As a result,

17C shows a manufacturing section. After two rotations of 12 rotations of the outer wheel 13 have been completed and an offset of 60 DEG has occurred, the tube 126 and the corrugation mold 112 start to overlap The mold tip 125 of the wrinkle-making mold 112 is pressed against the surface of the tube 126 to produce the annular wrinkle portion 127b.

17D shows the last moment of the manufacturing section. Six rotations of the twelve rotations of the outer wheel 3 are terminated and an offset of 180 DEG is generated. The tube 126 is rotated by the wrinkle- The annular wrinkle portion 127b is manufactured to the maximum depth.

Fig. 17E shows a manufacturing maintenance section, in which 7 rotations of 12 rotations of the outer wheel 3 are terminated and an offset of 210 DEG is generated. As shown in Fig. 17D, the rotation of the annular wrinkle portion 127b The mold 112 for making wrinkles pressed to the maximum depth keeps its current state and turns one more wheel. This is to evenly treat the surface of the tube 126, that is, the surface of the bone made to the maximum depth.

17F shows a departure section. When eight turns of the twelve rotations of the outer wheel 3 are completed, an offset of 240 DEG is generated, and the wrinkle-making metal mold 112 reaches the maximum of the annular wrinkle portion 127b It rises above the depth and idles. Therefore, the mold 112 for forming wrinkles does not completely deviate from the annular wrinkled portion 127b, but gradually moves away from the valley of the annular wrinkled portion 127b.

17G shows a step of starting the transfer section. After nine rotations of the twelve rotations of the outer wheel 3 have been completed and an offset of 270 DEG has occurred, the wrinkle-making mold 112 is rotated in the annular wrinkles 127b The tube 126 and the mold 112 for forming wrinkles are not interfered with each other. Therefore, the tube 126 can be moved in the longitudinal direction of the tube 126 through the corrugating mold 112. [ Of course, instead of the tube 126, a frame supporting the inner wheel 2 and the outer wheel 3 may be moved relative to the tube 126. [

FIG. 17H shows a state in which the transfer of the tube is in progress, and 11 rotations of 12 rotations of the outer wheel 3 are terminated, resulting in an offset of 330 degrees. The tube 126 and the corrugating mold 112 are kept in a state in which they are not in contact with or interfered with each other during the time interval from the 270 ° offset state to the 330 ° offset state as shown in FIG. The wrinkles of the next wrinkle are moved by the distance to be manufactured. After the movement of the tube 126 is completed, the offset of the remaining 30 degrees elapses and returns to the state of FIG. 16A, which is the origin, to prepare for the next wrinkle production.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be determined by the scope of the appended claims and equivalents thereof.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, Modification is possible. Accordingly, the spirit of the present invention should be understood only by the appended claims, and all equivalent or equivalent variations thereof are included in the scope of the present invention.

2: inner wheel 3: outer wheel
4: Axial center line 5: Hollow shaft
6: Rotating face 7: Guideline
8, 9, 215, 415: motor 21: pulley gear
22: inner plate 31: pulley gear
32: rim 33, 51: bearing
71: thickness 81, 91, 214, 414: pulley
100: follower 111: cam
112: mold for making wrinkles 113: fixed shaft
1131: fixed shaft hole 114: frame
123: mold mounting hole 124: spring
125: mold tip 126: tube
127: wrinkle portion 127a: spiral wrinkle portion
127b: annular wrinkle part 200: tube supply part
210, 410: Caterpillar 211, 411: Rubber belt
212, 412: Gears 213, 413:
300: tube manufacturing part 400: tube drawing part
500: adapter 510: inlet

Claims (9)

The tube 126 is moved from the tube supply part 200 to the hollow shaft 5 in a state where the follower body 100 is brought into contact with the guide line 7 of the outer wheel 3 and the cam 111 is located at the topmost position, ;
The cam 111 in which the follower 100 is in contact with the guide line 7 of the outer wheel 3 due to the rotation of the inner wheel 2 and the outer wheel 3 at different speeds has the lowest point A second step in which the first mold of the annular wrinkle portion 127b is manufactured by gradually pressing the tube 126 onto the mold 112 for forming a wrinkle while the wrinkle mold 112 is moved to the second step;
The contact position between the guide line 7 of the outer wheel 3 and the follower body 100 is changed by the rotation of the inner wheel 2 or the outer wheel 3 so that the cam 111 moves to the uppermost point A third step in which the tube supplying part 200 and the tube discharging part 400 are driven in a state where the tube 126 is transported by a distance at which the acid of the annular wrinkle part 127b is manufactured;
The cam 111 in which the follower 100 is in contact with the guide line 7 of the outer wheel 3 due to the rotation of the inner wheel 2 and the outer wheel 3 at different speeds, A fourth step in which the wrinkle-making mold 112 is gradually moved to the lowest point and the tube 126 is gradually pressed to produce the first acid and the second bone of the annular wrinkle 127b;
The inner wheel 2 and the outer wheel 3 are rotated at the same speed while the cam 111 is located at the lowest point and at the same time the tube supply part 200 and the tube drawing part 400 are driven, A fifth step in which a spiral wrinkle 127a having a pitch of 1 or more is produced while being fed and drawn at different speeds;
The contact position between the guide line 7 of the outer wheel 3 and the follower body 100 is changed by the rotation of the inner wheel 2 or the outer wheel 3 so that the cam 111 moves to the uppermost point The cam 111 which contacts the follower 100 to the guide line 11 of the outer wheel 3 by rotation of the inner wheel 2 and the outer wheel 3 at different speeds, A sixth step in which the corrugation mold 112 is gradually moved from the uppermost point to the lowermost point and gradually presses the tube 126 to produce a second trough at the end of the annular wrinkle 127b;
The contact position of the guide wheel 7 and the follower body 100 of the outer wheel 3 is changed by the rotation of the inner wheel 2 or the outer wheel 3 so that the cam 111 moves to the uppermost point A seventh step in which the tube supplying part 200 and the tube discharging part 400 are driven so that the tube 126 is transported by a distance at which the acid of the annular wrinkle part 127b is manufactured; And
The cam 111 in which the follower 100 is in contact with the guide line 7 of the outer wheel 3 due to the rotation of the inner wheel 2 and the outer wheel 3 at different speeds, An eighth step in which the corrugated mold for forming wrinkles 112 gradually presses the tube 126 and moves to the lowest point to produce the last crest of the annular wrinkle 127b;
Wherein the flexible tube is made of a flexible material. The method according to claim 1,
The second step, the fourth step, the sixth step, and the eighth step may include:
The eccentricity of the cam 111 is initiated by rotation of the inner wheel 2 and the outer wheel 3 at different speeds so that the corrugating mold 112 progressively approaches the tube 126;
The eccentricity of the cam 111 is increased by the subsequent rotation of the inner wheel 2 and the outer wheel 3 at different speeds so that the corrugated mold 112 gradually presses the tube 126 to the maximum depth ; And
Rotating the inner wheel (2) and the outer wheel (3) once with the maximum eccentricity of the cam (111) being maintained and the mold for forming wrinkles (112) holding the tube (126) at maximum depth;
Wherein the flexible tube comprises a flexible tube. delete delete delete delete delete delete delete
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