JPS59501197A - tube expander - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] /lo Inflating the end of a tube constructed and operative substantially as described and illustrated. A device for tensioning.

The present invention relates to a tube ex-zone, particularly a part of the tube, a preferred or inflates the ends and is used to join the ends of two coaxially placed tubes. Regarding the tube ex-gunda that can be used, 1. It is made of hard drawn copper. It is possible to expand tubes of hard materials such as tubes, as well as soft copper tubes. Regarding ex-yangu, which can also be used for pond and pond materials as well. .

Although many types of tube expanders are publicly known, the most common type is A series of soyos are mounted radially expanding about one axis and When inserting them into the tube at the end of the tube, the expansion of the soyo Stretch the material of the tube and adjust its diameter by the required amount, for example, generally the thickness of the tube wall. Slide the i part of one tube onto the expanded end of the other tube by increasing the It is like being able to join two tubes together by letting them do the same thing.

Such devices do not work effectively on tubes made of hard materials and inevitably lead to It is easy to object that this tends to simply tear the tube rather than expand it.

Australian Patent No. 926. See gg2.

The other drawback with the Australian patent mentioned above is that Noyo inflates the tube. It is in the area where it acts like this, and the handle of this type of tube ex gunda is quite It is necessary to apply a force, and various attempts have been made to alleviate the force that must be applied. , especially with the manual D-tube ex-unda. on the handles of these devices. Reduced force required -9 In one method, the configuration is such that only a portion of the tube is removed by the first operation of the handle. expansion occurs and further manipulation of the handle further expands the tube. It's like moving Noyo on the floor.

Reduce this force by using a structure other than a normal cam that acts on the drift. Attempts have been made to reduce the Even if the device that expands the Noyo is capable of exerting a force that is said to be In tubes, tearing of the material occurs around the circumference of the tube rather than uniform expansion. It doesn't work because it's too much. International Application No. P CT/A N g 01000.3g checking ...

Due to the problem that exists in Noyo, which circulates in the radial direction, it is possible to use a ball-like former. It is proposed to inflate and tension the tube by driving it the required distance. This works to move the tube axially when expansion occurs. Hold the tube against relatively large forces, and in such cases 1 to hold against rotational displacement (type 1 of the clip that must be used is grip It is said that when the renobu holds the tube sufficiently, it tends to push up against the tube wall. This will cause problems. This type of device can therefore be used adjacent to the area where expansion occurs. However, this was not successful because damage to the tube occurred in this area.

The object of the invention (°) is to overcome the problems mentioned above and with respect to the operating forces. It is relatively easy to operate, and tubes made of hard materials can be used without tearing. grips the tube against the large axial forces exerted during inflation. Provide tube ex-gunda without damaging the tube itself (no need to damage the tube itself) It's about doing.

According to the present invention (4) Tube Ex, A? Then, the extruder causes expansion in the same linear manner as before, moving the tube into the expansion area. The target is illuminated by expanding the It consists of an inflatable gouer in the shape of a tube. move to the end of the tube and then expand outwards into contact with the tube. The tube is expanded by radial force in a circular area, and then the expansion guide is inserted into the tube. Move the tube toward the tube and gradually inflate it.

In such devices, the end of the tube to be inflated ~Grip the tube in a different way since it will simply be placed against the tube itself. Although one phrase is not necessary, a guide means may be provided as necessary. In this case, the tube It is gradually inflated in a pointillistic manner towards the tube The force exerted by the tube end is significantly lower than with other methods, and Relatively circular contact occurs only in the far apart die region, so that In general, cracks do not occur in the tube. There is no need to grip the tube firmly as it will be directed toward the . This is because the tube is heading toward the Tube Ex R Nogu with the expansion die. This is because when it is pulled, a reaction force is inevitably obtained.

The device described above can be constructed in a variety of ways, but a simple groove light version , the following manual operation ex ? /derg can be of uniform format. Therefore, such If you hit the Tsuku/Goo, the head will form part of one handle and the other will be a handle. 15 is pivoted to the head, so that operation of the tension rod passing through the head can be carried out. Another handle is pivotally attached to the head, and the head is provided with no. The yaw is shaped to engage a tube of a predetermined diameter and is The end of the tension rod is provided with a surface that allows the part to rest, and the end of the tension rod is No. and Franz are provided, and the expansion die slides over a portion of the chi. placed, the expanding die consists of multiple segments formed longitudinally. A split method can be used, in which case the radius of the far end of the expanding die is considerably smaller. The expansion die is held backward by the retaining ring 1 for that sector/yon at an angle of <q. Therefore, it is necessary to position the expansion die at the point where the inner and end expansion is to be performed. When moving the tension rod forward to The expansion die can be pulled into the small part, and then the tension rod By moving the do backwards, the section/yong of the expansion die is changed to As it moves, the expanding die is forced to expand outward, which causes the An annular outward expansion of the tube is carried out at a certain point, and when complete expansion has taken place. By continuously pulling the tension rod, the opposite end of the head is brought into contact. The expansion die is moved along the tube in a straight line; A large expansion occurs at the ends of the tube.

Method 1 for inflating a given end of a tube is (a) #inflating the tube with a die In the middle, there is a deep hole at the end of the area to be expanded on the side far from the expansion die support head. the step of inserting in place 1; (b) Stage of engaging the tube end against the reaction surface of the head: In the past, (c) Stage 1 for pushing and expanding the expansion die to a predetermined expansion diameter, and (d) Reaction surface The expansion is carried out gradually and continuously until the end of the tube is engaged with the It consists of one stage that is pulled in along with the surface of use.

The characteristics of non-invention are as follows. In other words, the expanding die is supported by the tube, and placed within it from one end of the tube to at least A point configured by engaging the inner surface of the tube away from the tube end, the expansion Forward insertion of the expansion die to perform an annular expansion of the tube at the forward end of the die. There is a means to push away the I415, and the end of the tube is gradually expanded. To tension the head, there is a means for pulling the four-length screw toward the head. At the point where the tube is inflated, one thread is connected to the end of the tube to be expanded, and the tube is expanded during the straight expansion action. The head is not provided with any means for holding it against axial movement. Ru.

According to a preferred embodiment of the present invention, the TubeX-Q Nogoo has a head with one through hole. A tension rod extending through the hole and a tension rod located at the front of the tension rod. necked expansion die and fcJ pushing the expansion die forward on the tension rod ’) and means for limiting the forward movement of the expansion die on the tension rod. and pull the expansion die forward with the rod ``2'' (push the expansion die when pressed). means provided on the tension rod for expanding the and a means for pulling back the reservoir to engage the end of the tube to be inflated. It is more like a surface set up in the front.

In order to fully understand the features of the present invention, examples thereof will be described below with reference to the attached drawings. explain.

Figure 1 shows the inclination of the tube Ex-Gunder in the state where the tension rod has elapsed. This is a perspective view.

Figure 2 shows that the tension rod is moved forward when the tube begins to expand. FIG.

FIG. 3 is an enlarged view of FIG. 2 showing the tool in cross-section in mutually perpendicular planes;

FIG. 7 shows the spring in cross-section and a plane showing the expansion die along with a portion of the tension rod; It is a diagram.

Figure 5'd, Expansion dam mounted on head and noyo and tension rod. The tube is pushed into the predetermined position to be engaged by the noyo. FIG.

Figure 3 is a drawing similar to Figure S, with the tube being pushed forward to the surface of the noyo. The end of the tube is engaged with the front surface of the noyo, and the pull rod is pushed forward. Position the inflation gou where it will be pushed into the tube and start expanding the tube. Show what you are doing.

Figure 7 shows the pull rod actuated to expand the expansion die and shows the Franz is placed at the end of the expanding die so that it begins to yoke along the tube. FIG. 3 is a drawing similar to FIG. S and FIG.

Figure 3 shows that the tube has finished expanding and is released from the expansion die. FIG. 6 is a diagram showing a state in which the expansion die is not pulled back to a position where it can be released.

Referring now particularly to the drawings, the head 1 has a radially movable head 2, The jaw 2 has a surface 3 of the head l and a retainer 5 adapted to engage the head l. is restrained between the surface 4 of the

The noyo 2 has a recess 6 at its inner end and a reaction surface 7 against which the end of the tube to be inflated rests. and the reaction surface 7 absorbs the axial forces generated in the tube during operation of the expansion die. Conventional type that engages the outside of the tube away from the end. Forms a means for holding the tube without the gripping device used .

The tension rod 8 has a cheek portion 9 and a flange 10 at its end.

Expansion die] 1 is a segment divided in the longitudinal direction of the first row and the Ωth row) IIA and ], IB, these segments are around the tension rod 8, Segment 11A of expansion die 11, ring engaging the circumferential groove of ]IB]2 Therefore, they are held together.

The front end of the expansion die 11 is an annular table that determines the degree of pressure required for the end of the tube. It has a surface [4] and an inclined surface [5] forming an oval that is guided to the annular surface [4], and the expansion da... The surface of [1] is an inward diagonal expansion guide from the annular surface 14. Give 16.

Inner side surface of the expansion die] 7, expansion die 11 is the segment of the expansion die]IA, ]]B The front end of the front end]8 is shaped to fit into the tapered part 5+9 of the tension rod 8. , the rear end 19 of the expansion die 11 rests on the pull rod 8, and the expansion die Segment) 1] A, 11B can be tilted, and segment) IIA, IIBO front end] 8 can be tilted. , expands outward under the action of the Teno P portion 9, while remaining in contact with the tension rod 8. Maintain the rear end 19.

The annular surface 14, together with the expansion guide 6, allows the tension rod 8 to move from the position shown in FIG. , the tube is moved backwards to the position shown in Figure 7, and at this stage the tube is removed from its end. It has five annular expansion parts 21.

A spring restrained between the rear end of the expansion die 1 and the collar 24. 23, and the collar 24 is shown in the drawing as being welded to the tension rod 8. As shown, the tension rod and collar 24 may be secured with a spring structure or a spring. Pull 2 into position where the desired force of z3 pushes the expansion die 11 forward. On top of the rod 8 is a grub screw that fixes the collar 24. ) or similar along the tension rod 8. It may be Noh.

The use of segments IIA and IIB of different shapes is due to the fact that the expansion die 11 is Forms a circular surface that allows for easy chipping without creating scratches due to printing lines between segments. This is to allow the tube to expand. Segment) IIA is the main segment of this device. (intermediate segment) IIB fits between main segment IIA and Theno and some parts form an angle. Therefore, segments) IIA and 12B are longer than each other. The annular surface is movable by a length in the transverse direction, the annular surface is formed into a circle, and the annular surface is formed into a circle. The edges of 1A and 11B are at a certain angle with respect to the tensile strength 75; Inside of the expanding part: (Action is made to form a perfect circle without forming fins.) It is guaranteed to swell. Annular surface 1 that forms this angle (un? leek) engagement) It is on the line 11c of 4.

Some of the segments:/ 1. L A is compatible with other group segment) IIB In order to make it possible to is longer than the layer in segment 11B, and the device is pushed into the tube before inflating, and the segment 71-lr:J, all ticks. precisely matched to the inner surface of the tube. However, the annular surface of the segment The initial expansion occurs when there is friction between the tube 20 and the inner surface of the tube 20 to be expanded. When 1 is all the segments: / G]], A, 1], B, 3 is in that position. 1.OH separator at the end of the 4-rod 8 ment IIA.

11B, and then the next segment is moved along with the flap. The expansion die 1 is pulled backward to inflate the tube. The expansion sound of the Franz 10 is kept constant until it reaches its end.

The operation of this device is as shown in FIG. A tension rod 8 is connected in its front part to an expansion die segment) IIA, 11B, these segments], LA are the segments of the expansion die 11. is movable at the front end 18 and is engaged by a portion 9 of the pull rod 258. It is controlled and wholesaled. tube 2011 When you want to inflate the tube 20, move it toward the head 1 as shown in Figure S. Pushing, expansion die] Segment 1) Segmeno) IIA, 1], BH at its tip approximately in the radial direction 50 medial gyrus is moved, while the tension rod 8 pulls the segments lIA, 11B of the expansion die 1] is pushed forward a sufficient distance so that the end thereof is in the position shown in FIG.

At this stage, the annular surface 20 engages the inner surface of the tube 20 and the pull rod 8 advances: (slides along the tube 20. At this time, the spring compressed 23 represents the annular surface 1 when the tension rod 8 is advanced to the position shown in FIG. contact the inner surface of the tube 20.

Figure 4: The end of the tube 20 is connected to the spring lino The shoulder 27 of the recess 6 of the noyo 2 is engaged with the noyo 2 which is urged inwardly by engages the tube 20 and the shoulder of the tube 20 engages the reaction surface 7 of the Noyo 2. It shows you what to do.

If the tension rod 8 is pulled back in the direction shown by the arrow in the figure, the expansion die 11 Segment 1. As shown in FIG. 7, the front end portions 18 of IA and 11B are Direction 1 (push and move, one hand /)] OHM expansion die] l segment], lA, ll The outward movement of B is limited to a certain amount of expansion in tube 20.

During the movement of the tension rod 8 from the position shown in FIG. 6 to the position shown in FIG. A11 does not move in the axial direction, and expands Guisegumeno l-1] A, 1-'1 B! 7) Move to expand the effective diameter of the end of the front end (the expansion die) to increase the circumference. Create a raised line. Expansion die] 1 to the position shown in Fig. 3 by the pull rod 8. When it is moved, an inevitable shadow vt, part 30 is formed on the tube 20 due to this movement. be done.

When this end of the tube 20 is inflated, the noyo 2 will release the spring circlip 2. 6 to accommodate the inflated end of the tube. At this stage , the tube 20 can be removed as the inflation action is complete.

The movement between the head] and the tension rod 8 is controlled by a suitable means such as /pair of levers 32,33. The lever 32 supports the throat 1. The other lever 33 is pivotally connected to the body 29 and has a tension rod. It has a connection part (not shown) to the board 8. Instead of these levers, pull rods It is also possible to use a hydraulic mechanism that can be easily installed between the .

Of course, the shape of the expansion die can also be changed, giving the option of having separate segment shapes. The shape of the expansion ring has a round outer periphery (i.e. a round cross-sectional shape). You can also The purpose of the expansion goo is to keep the end of the tube against the reaction surface of the head. The tube is held in place and moved outward while the tube is gradually expanded linearly. Forms an outwardly pressed circular ridge and moves the expansion die axially within the tube It is to let

This allows the tube to be inflated with a small sword as well as This can prevent tears from occurring in the tube. The reason is that the expansion is a small circular region. It only occurs in small areas and moves forward in a straight line, and even if it does occur, it will only occur in small areas. This is because it works only when

The inventive device has a compatible head so that it can be applied to tubes of different sizes Alternatively, an adjustment device can be provided on the taper of the tension rod. by moving the end rim or collar axially along the tension rod. limit movement only on the expansion die or rod Theno 2, or The expansion die itself is attached to a device that limits its outward movement on the taper to reduce the diameter of the starting point. It is also possible to decide. In addition, such adjustment can be done by changing the adjustment device to different sizes by appropriate positioning relative to the position of the expansion die above. It can also be indexed so that the tool can be used on the tube.

Submission of translation of written amendment (Article 184-7, Paragraph 1 of the Patent Act) 59.3. -1 Showa year month day j Mr. Kazuo Wakasugi, Commissioner of the Patent Office 1. Indication of patent application PCT/AU8310 OO832, title of invention Chu Bu Expander 3, patent applicant 6. List of attached documents fli Translation of Kenshosho 1 copy The scope of the claims ／　The tube that should be heated is placed on the reaction surface of the head that supports the Sugi J4 Gui. While engaging), move the die from the head to the lower side. Insert it into the tube with the shoulder of the head and pull the tip of one of the ten thousand dies. Inflate it to the required diameter with the rod, and control the shadow 15 dies on the reaction surface. The selected end of the tube is pulled and expanded to the end of the tube. 1. In the inflating device, form a shadow bottle die and alternately around the tension rod. Maintain the distance and have surfaces at the end of the delivery side that form complementary radial angles. The first segment with mutually compensating expansion surfaces? and a second series of segments of a series of λ segments. Make sure there is no gap between the segments in the radially angular contact area with the floor piece in place. To form a continuous expanding surface, one series of seflints is connected to the other series of segments. A device characterized by sliding in an axial direction relative to a component.

The above-mentioned speed has a surface forming an angle in the radial direction that extends to the far end of the tension die. Applying pressure to the rear of the first series of segments, the outer part of the first series of segments engage the opposite end and move the shadow die toward the reaction surface, thereby , tapering; the second segment with an oblique slope is 71 hyperactive in the axial direction. According to the yoke section of the claim, the continuous 7 expansion surfaces are kept entirely (/C). / Engineering page Nc carpet binding! .

3. A head and a tension rod that moves in the same direction as the drop line that protrudes from this head. a shouldered body and an end 5J' positioned on the protruding bright portion of said tension rod; J+f shadow, inflatable -3 g to be inserted into the tube to be tensioned A and a hook provided on the head to receive and stop the tube during coloring. The tube's knee length with a reaction member: (placed, front 1 piece shape) 乎gui: σ, Alternating side-by-side with a series of early 1/1 segments with a wedge-shaped end that straightens the rim. 71! a first series of segments having intersecting wedge-shaped ends; one series of segments has a length relative to the other series of segments. The wedge-shaped segments hold each other in place so that one side can move in the other direction. A series of segments Dit! A series of segments on two sides /1. All the features are that the annular tube whose page diameter changes is formed in the above-mentioned box. tube expander.

H) The segment/l- is pressed against the bow 90 knots at the rear part, and the tension is By engaging with the Qi ξ of the rod, the rP is )5? It is possible to do this, but by moving the tension rod completely, When threading, one thread is aligned with the front end of at least one series of segments. 1. The expansion is limited by the Franz of the suspension rod. A tube expander according to claim 3.

Left: The reaction member is radially movable and inwardly supported by the hemlock. The tube and shadow field device 15 according to claim 3, comprising a stepped tube that is The three bulges of the annular tube are connected to the inner side surface that is farthest from the hemlock and the hem. A claim with a rear and inward head facing the head. A tube expander according to scope 3.

7. When the main body and the cedar die are supported and the tube is placed on the die, the die is In order to make the tube part 3 obscene, the head that puts 1 #4 die is placed. and the expansion die can be heard from the head and the tube tube from one end of the tube to engage the inner surface of the tube farthest from the one end. DI? At the Tube Ex Xenoda, which is positioned at The expansion die extends along the length of the die to form a complementary wedge-shaped member. It has a mutually engaging surface that aligns with the axis and tightens around 5 on the 2nd end from the It consists of two series of segments, and the series of Aki-10000 segments is the one for the specific income balance. The annular surface can be moved longitudinally relative to the other set of segments. Then, in order to trace the fourth-order shadow and pattern of the tube with the bright female part of the carving die, The former end of the commemorative a device for pulling the entire expansion rod toward the head to gradually expand the tube; The above-mentioned was installed, and the linear j33 expansion middle front = 1 tube was moved by shoplifting at the node line. The tube is characterized by further comprising an electric wire that engages the end of the tube to be inflated. The town that protrudes from the tubeex, knob g, nonvolatile head, and throat. - 10,000@JK A movable tension rod and a an expandable die configured to be inserted into a tube whose end is shaded or curved; , and a reaction member on the head receiving the end of the tube. In the tube expander including the expansion guide, the tension rod is between a series of segments of 组/ arranged in fTc@, a series of 2 segments, each of said segments C being Front 8 points near the head, rear part of the segment], right, side 1st chronograph t'', sub needle However, the expansion die has a tensile force at the part that protrudes forward far from the collapse note ＼ノ; It further includes a hole part of Qi ξ on the white throat, so that the tension rod is When the die is moved backwards, the die is exposed at the front end. Notes - An annular tube at the end leading from the throat, an expanding surface; The tube shadow surface is located in the radial direction (n and the head The i″1 mark cells are arranged in a wedge shape that aligns with the bay part of the die that is 7′ wide. A series of segment 1 with mutual I threads 11 and 11 bamboos on the segment, and a series of cuts 2 The first series of segments is 5. longitudinally movable with respect to said first series of segments complementary thereto; The expansion guide includes means for restricting the longitudinal movement of the segments relative to each other. furthermore, the series of sedumites provide a continuous expansion table during expansion of the tube. Maintain the surface and mutually engage the rolling material surface g. and restricting the movement of said segment. The means includes an annular groove around the die and a ring engaging the groove; The grooves in the series of segments are axially aligned in the first series of segments relative to said ring. , but the first segment of the d-th segment is restricted to the second segment of the second segment. said means being wider than said ring to allow limited longitudinal movement of said means; further comprising a flange on the pull rod to limit expansion of the die. The tube extractor according to claim g.

IQ first series of segments insert the W tension die into the tube to be expanded When the head is pushed forward by the spring means and the head of the tube expands laterally pressed by the flantz on said tension rod at the end remote from so that the second series of segments is longitudinally free with respect to the first series of segments. moving one series of complementary surfaces of the segment to the other series of sedameno) K contacts The tube ex-zone according to claim g, characterized in that the tube is maintained in a Goo.

l/ Notube Exper as described in any one of claims 1 or 2. In the goo assembly for goo, the tensile rondo protruding from the human body has the reaction surface the protruding end has an outer cheek portion and a flange; and has spring means surrounding said tension rod on the end far from the outwardly protruding end. a bulge disposed on the tension rod between the end flanges and the spring means; The tension die has a wedge at the end spaced apart around the die and adjacent to the end flantz. 'first segment with a radial surface expanding outward to form a said first series of segments and adjacent said end flange; 1 is arranged as a complementary wedge to the expanding wedge on the series of 7 points/gates. a first series of segments having all the disposed ends and engaging the bristles in the first segment; a ring surrounding the die on the end distal to the wedge end; The tth segment fl is restricted in the longitudinal direction with respect to the ring and the segment fl is limited in the longitudinal direction with respect to the ring. The grooves of the above series of segments are formed long so that the λth series of segments is the same as the first segment. enabling longitudinal movement relative to a series of segments, said springs and said ends Franz engages the end of the D segment at least once the first segment of the segment. A die assembly characterized by.

international metrology report

Claims (1)

[Claims] (a) Place the expansion die in the area to be expanded that is remote from the head supporting the expansion die. a step of inserting the tube into the tube to an end farther from the area; (b) engaging the end of the tube against the reaction surface of the head; fc) expanding the expansion die to a desired expansion diameter; (d) Pull the W expansion die toward the reaction surface, and the die engaged with the reaction surface. gradually and continuously inflating the end of the tube; A method characterized by comprising: 2. Place the end of the tube to be inflated into the radially movable tube. engaging the rod and pressing the noyo inwardly around the end of the tube. enclosing and engaging the reaction surface with the end of the tube; As set forth in claim 1, the jaw is formed so as to The person listed has left. 3. For the series of segments forming the expansion die, the tapered tension rod is a step of expanding the expansion die by pressing in the axial direction with the expansion die; retracting the segment against a suppression device when inserted into the tube; and when inserting the expansion die into the tube, the segment is Claim 1, characterized in that the tube is brought into contact with the inner surface of the tube by being moved in a certain direction. The method according to either paragraph 1 or paragraph 2. 9. A head that supports the expansion die and a portion of the tube when placed on the above goo. a device for operating the expansion die to expand the wood tube; 2 in Buexno ξ Nogu, The expansion die is supported by the head and passes through one end of the tube. the end of the tube that is located in such a way as to be placed on the tube; ; (with an inner surface of said tube adapted to engage and having an expansion guide; And, At the front end of the expansion die, move the tube upward to perform an annular expansion of the tube. a device for expanding the front insertion end of the expansion die; upward toward the head to gradually inflate the tube by the inflation guide. a device for pulling the expansion die; During the linear expansion action of said tube, against the axial movement of said tube The top to engage the end of the tube above is inflated to hold the tube above. a device on the head; A tube ex-gu/der that is characterized by more 3. The tube EX gungu according to claim 9 is expanded at the front end. A tube x-nongoo characterized by consisting of a set of segments that can be formed. 6. In the TubeEx Gungoo described in claim S, The inflatable gou consists of two series of segments, the segment being at the forward end. wherein the annular surface has an inclined surface that engages with the tip; It is designed to engage and inflate the tube, and a series of segments on one side. segment, which is longitudinally movable relative to the other series of segments and relatively A tube extruder characterized in that it maintains an annular surface that is prone. ・J? /Dargoo In the tubeex gungoo described in claim 9 , engages the end of the tube to hold the tube against a tensile reaction; The device for displacing a radially movable nozzle supported on the nozzle is A tube exnogungoo characterized by consisting of a working surface. g. Move the die relative to the tube to inflate the end of the tube. said die arranged in such a manner as to cause expansion of said tube. ``In the tube ex-gu/goo containing the device for operating the (a) inserted into the tube through one end of the tube to be expanded; An expansion die that looks like this, (b) Consists of a main body and a head, which run from the head into the tube. supporting the expansion die so as to plunge into the (c) When the expansion die moves forward so as to plunge into the tube, it is expanded. with a reaction surface on the head above to engage the end of the tube above ( d) Expanding the end of the die in the tube that is far from the reaction surface a device that exerts an expansion force on the die so as to (e) a device for limiting expansion of the expansion die when the expansion force is exerted; (f) through the end of said tube engaging said reaction surface towards said head; a device for pulling said expansion die; The tube is first inflated and then moved axially to the end of the tube. The above die is gradually expanded, and Tube Ex Gungu is characterized by more. 9. In the tubeex gungu described in claim g, The expansion die is composed of segments, and the segments are the ipsilateral constriction of the Chico. an annular surface at the forward inflatable end to engage a surface of the inflatable die; an inwardly sloping surface and a rearwardly inwardly directed inflation guide extending from the annular surface. Tube Ex ♀ Ngu is characterized by this. 10, having a head that supports an expanding die, and that when placed on the die, the die From the headquarters having a device for operating said expansion die to expand a portion of the tube. In Naru Tube Ex, p Goo, a pull rod extending through an aperture in the head; an expansion die placed on the previous part of the tension rod; a device for pushing the expansion die forward on the pull rod; a device for limiting forward movement of the expansion die on the pull rod; To inflate the above expansion die when pushed forward on the above tension rod a device on the four tension rods, a device for pulling the tension rod back against the expansion die; a reaction surface on the head to engage the end of the tube to be inflated; and, Tube Ex Gu/Goo, which is characterized by more. // arranged around said tension rod and radially on said head The head is movably supported by the head, and the head is moved inwardly. a device for pressing the reservoir, and a device for each of the tubes to be inflated. a recess adapted to engage an end of the tube, and the reaction surface is arranged within the recess. The channel according to claim tOR, characterized in that it is affirmed to the above-mentioned -Bextract/Mangu. /, 2 said expansion die has a luxurious structure and is arranged around said tension rod; a segment of the tension rod provided at the forward end of the tension rod; and a front end of the tension rod. Completely equipped with a furanone provided in the front, the segment of the expansion die is , and the tension is engaged at the rear end. The chip according to claim 70 or claim 1/1, characterized in that it engages with the rod. Tube Extract Gungu. /3 Construct the expansion die and place it in place of one of the tension rods. placed between the first Ippen D segment and the first Ippen segment. a first series of segments and engages grooves in the rearward ends of said segments; 74 of one of the series of segments. B,'j: Said - Lucky Sedame 20 the length of one copy of said series of segments with respect to the other of said segments; one width is removed to allow movement, and each of said segments / Provided at the end part far from the tube and pressed against the inner surface of the tube to be expanded. a portion of an annular surface positioned such that said series of segments is in contact with the annular surface at the range of movement of the expansion die 1Q@ or the 1st Tube extract Gungu as described in / section. /q Said p! The device for expanding the e-stretching die is arranged in the hole in the head. The device has a forward end projectable from the outside, and the diameter increases at the forward end. A tensile iron is installed at the front end and holds the butt flan. the expansion die comprises a first die arranged around the tensile rond; a first segment located between the pair of segments of said i/ a segment surrounding said segment at a rearward end and extending from said segment; a retainer that engages a groove in each of said segments to confine the segment along its entire length; and a retaining ring, the rear and edge portions of each segment being engaged with the tension rond. and the front portion of each of the segments a portion of the annular surface; When the expansion die is inserted into the tube, a characterized by having inclined interlocking surfaces positioned for engagement. Tube Extract No. 015 tube according to claim 10 or 1/1. A method of inflating substantially as described and illustrated.