JPH0491824A - Forming device for long size corrugated tube - Google Patents

Abstract

PURPOSE:To form a high accuracy long size corrugated tube by chucking a long tube stock with a pair of chuck parts, moving the positions of the chuck parts in sequence and forming bulged parts on the tube stock. CONSTITUTION:First, the long size tube stock 9 is inserted from a long size tube stock receiving base 4 to a hydraulic chuck 2 and a high frequency coil 3, the tip side in an inserting direction of the long size tube stock 9 is chucked by the hydraulic chuck 2', then, the intermediate part of the long size tube stock 9 is chucked by the hydraulic chuck 2. Then, after high frequency power is applied to a high frequency coil 3 and the entire periphery of the long side tube stock 9 is heated in an axial direction and partially to a prescribed temperature, a servomotor 5 is actuated, operates a ball screw 7, moves the hydraulic chuck 2 by a prescribed distance in the axial direction to charge a load on the tube stock 9, to bulge and deform the heated part partially. immediately, to inject cooling liquid from a cooling liquid injection tube 8 for cooling the bulged part and to complete one peak part. In this way, after peak parts are formed one by one, the cyclic motion to move the tube stock 9 peak by peak is repeated by a required number of peaks to form the corrugated tube.

Description

[Detailed description of the invention]

[Industrial Application Field 1] The present invention relates to an apparatus for forming a corrugated tube of a long material. [Prior Art] Conventionally, methods for producing corrugated tubes include liquid 0-bulge forming and 7-chihub molding as disclosed in Japanese Utility Model Application Nos. 633-85319. Insert the raw tube into the tube, press both ends of the tube with a press mold to make it liquid-tight, and add 1f of oil into the tube.
is introduced, the raw tube is bulged out, and the mold surface is

[1, which is a processing method of toothpicking to make it harden, and also developed in 1983-ε3
5:, 319! 7J of the r-'J publication [1 device is
After supporting both ends of the raw tube 7, the raw tube is locally heated, a load is applied from the axial direction, and immediately after that, it is cooled to complete the forming of one mountain, and this is repeated sequentially. However, the conventional technology has the following problems. First, for the hydraulic bulge processing method, (a) It is necessary to process the raw pipe and the press mold to have a high viscosity because it must be kept liquid-tight. It is not possible to increase the size and complexity of the die structure. Increase in equipment, maintenance, nonce
Also, the device of Utility Model Application Publication No. 6:3-85319' i
Is there a problem?
Sushi 2. Second, there is a restriction on the length of the woodwind, and if this is exceeded, the molding accuracy (external diameter of the bulge, bending, etc.) will vary. 0 In addition, in order to form long blank tubes with high precision, it is necessary to develop a new device to prevent bending of the blank tube, which inevitably increases the size and complexity of the device. The present invention is capable of molding J-1 for the Lugu River with high accuracy and without increasing the size or complexity of the apparatus N even from long blank pipes. ”Lugu h f-1
1] --- The purpose is to provide and cover molding equipment. [Means for solving the problem 1 1-Description [The present invention to achieve objective 1 [Long length according to J]
The rug gate knee forming device j6 consists of the following forming devices. , jt4f 3rd, chucking the long blank tube from the outer periphery @IJ direction, ゛Movement 1
, j1 pair of 1-17 ivy parts and the - of the chuck part.
Cjrt, -'Ff in the axial direction 16: Drive means installed between the pair of chuck parts to circumferentially tJ, 7JO heat shield, etc. after heating. (A long piece equipped with a cooling means for injecting a cooling liquid into the heating part (heating to subtract i♀7ul at 7; ] 艮[Place the woodwind in the pair of chuck parts.) First chuck part (Main tube feeder) inner back chuck part)' Part 1
・Bo heat is applied between the 11 chuck parts, and the cooling means [
The second chuck part is heated to a predetermined temperature, and the second chuck part is heated to a predetermined temperature.
The heating section of the woodwind is moved by one pitch from the driving means with the arrow () toward the shaft, and the heating section 4 of the woodwind is locally swollen and deformed, and immediately hD heat, cold f, and liquid 11 are injected from the cooling means to cool the swollen section. 2. The forming of the first mountain is completed. Return to the 37th position (J. Move the first chuck part by one pitch with the drive means. Next, drive the driving stage of the first jack section (by teasing and twisting the raw pipe with the second chuck section and intersecting the first chuck section). Move the first chuck part to the second chuck part (, = 1 pitch y-), and then use the '1st chuck part to move the raw tube by y-y. Repeat step 1. −”'1. Lugateji 1--1
I'm going to make one. (Embodiment) As described above, a preferred embodiment of the long rugate chip forming apparatus according to the present invention will be described with reference to FIGS. 1 and 2. FIG. An example is shown. In Fig. 1,
1 is a stand and 1. On the top of the mount 1 are servos t~-ta 5, b-
and a ball screw 7.7- are supported. Servo Tanabata 5.5' and ball screw 7.7 are each 4" mechanism 6
．． 6-. . Also, small screw 7
．． Turn to 7''', respectively, oil & chuck 2.2-(]
- a y-yak such as an electromagnetic chuck or an electromagnetic chuck) is supported. Here, the hydraulic chuck 2- constitutes the first chuck part that holds the raw pipe from the outer periphery of the middle part C in the longitudinal direction, and the oil 1j ``P-1=Chuck 2 holds the raw pipe in one direction. 2nd U with Chi-X and vines from the outer periphery in the middle)
1, 7j, hole screw 7', which constitutes the f-totsuta part;
1'' gear mechanism 6' Lee small upper 1-] constitutes a driving means for driving the first chuck part in the direction of the raw tube 'Mii.
Ko-Ruoshi 7, -A-A'nokimura 46, υ-Hoshi Ichiya 5
constitutes a driving means for driving the hinge portion of the slave 12 in the direction of the tube axis yj. A heating and cooling means is provided between the two chuck parts (, -), which includes a high frequency wave 3 and a coolant injection pipe ε. J Torimaki,
The tube is heated locally in the axial direction. Immediately after heating, the coolant injection pipe 8 is connected to the local heating section (J) so that the coolant is injected once to cool the area. A long blank tube is shown as a bare top, and 4.4'' is a pedestal for a long blank tube and a gorge gate tube, respectively. pedestal 4.4'', hydraulic chuck 2 The high-frequency coil 3 is arranged with its axis 1!''U in the feeding direction of the long blank tube 5. Tochi-1-11, proceed as follows (- is produced. 1) Then, lengthen the long blank tube 9;
Insert into F dock 2, J, and high frequency = 1 il:, 3,
Using the oil pipe 7N and 2", turn the tip end of the raw tube 9 in the insertion direction. 7th), 2. Use the hydraulic valve Next, apply high frequency power to the long blank tube 9 locally in the axial direction [,], and in the entire circumferential direction. 9. As soon as the heating part is heated to the predetermined temperature IJ, the screwdriver B is operated, and the ball screw 7 is operated via the 4' nipper 6. shi..., oil 1 earth cheek 2 move a predetermined distance in the direction of axis 1!jjL ?Main pipe May,
By applying two loads, the heated part is locally bulged and deformed.
Immediately after that, inject the coolant from the coolant injection pipe and 3.
・Then, remove the bulging part 8:1θ and complete the forming of one mountain.
- Activate the 1st - 7th (5-) and move the small 7th direction (51171) to the woodwind feed 1). It moves by t!, ``C, 1 pitch of the cumulative tube, 1 branch tube feed direction [1!]. Next, the hydraulic chuck 2 moves the raw tube S] by -1 -
゜Subsequently, open the oil chuck 2' and set the servo 1-=
1)' is operated (, key) 76- to move C, ball oscilla 7', and oil 0-jack 2- by 1 pitch and 1 minute in the direction opposite to the feeding direction of the raw tube, and in this state (゛Oil J
EE 1-Yatsuk 2' and long "Leguto molding part (艮1
[Middle part of system 0] Buy the rugate tube (J-shaped part). 1-Mold the raw pipe 9 one by one and send the raw pipe 9 one by one after molding to the required number of mountains (j repeat C1). As the long raw pipe 9, JIS Old IA in ST, outer diameter 28
．． 6th order, meat 11.2 IM+, length 3000. An example of the molding conditions when using , is as follows: molding distance: 6 m, molding pitch: 10, frequency: 40 KH2, voltage: 4 KV, current: 7 A, heating time: 1 second, oil Teru J-Yatsuk 2's movement speed g 20m,,/Sec
, cold NJ liquid injection fete 101,, / m + ri, such a molded article ('t, lJ), the amount of swelling is small and 111 people 1 is small. --7 was inspected for molding J dokatesa 7J,, O molding sword, -] Ruge i ~ ji] f, and found that the viscosity of the variation in the outside diameter of the bulge (, J1 is the same as that of conventional molding I-
Accuracy 'C1 and long length -] Lugutono 1-1 (J regardless of bend or small and 7': o This is a pair of oil 1
Distance between 1 chuck 2.2 - 100 mm"200
This is because uvrI is small. . FIG. 2 shows a mounting part according to a second embodiment of the present invention. 7 The second embodiment is one in which two or more F woodwinds are molded at the same time.
．． A plurality of pairs of chucks 2.2- are provided, and the chucks 2.2 on the ~ side can be moved simultaneously by a ball screw 7, and the chucks 2.2 on the other side can be moved simultaneously. 2.2-...hole screw 7-
゛(-J, sea urchin, high frequency that can be moved at the same time.)
It is set in. 1 The other configurations are the same as those of the first embodiment, so the explanation will be omitted. The effect of the second embodiment (J is the effect described in the first embodiment).
1 was produced, and it was used as a departmental machine. 7 [Effect of the invention Song Dynasty] According to the present invention, a pair of Yak parts (oil J, IE f?
Cook, 2') chucks the long blank tube from the outer periphery, so the long blank tube is chucked in the middle of the long blank tube.
However, it is possible to reduce the distance between the pair of bulges A and tsuk, which makes it possible to apply a stable 1 = axial force, and at the same time suppresses the bending of the long blank tube (its height and height). It is possible to produce a long material with fine precision.It is also possible to produce a long material with a double-end pressing device, such as in a liquid bulge forming machine, which requires up to 15 people to use a hydraulic system. Since there is no need to provide a bending suppressing device, the device can be made midline and compact.

[Brief explanation of drawings]

Fig. 1 is a front view of a long corrugated tube forming apparatus according to a first embodiment of the present invention, and Fig. 2 is a front view of a long corrugated tube forming apparatus according to a second embodiment of the present invention. Partial front view of (Heating and cooling means -
・Part) 4.4-...Base 5.5'''...S'-H7-ta (part of drive means) 6.6'... Gear mechanism (part of the drive means)
7.7'... Ball screw (part of the driving means) 8
・・・・・・Cooling liquid injection pipe (IJn heat, cooling 1st stage-・
Part) 9...Long raw pipe special

Claims (1)

[Scope of Claims] 1. A pair of axially movable chuck parts that chuck a long blank tube from the outer periphery; a driving means for moving each of the chuck parts in the axial direction; and a drive means between the pair of chuck parts. 1. A long corrugate tube forming apparatus, comprising: heating and cooling means for locally heating a long blank tube, and immediately after heating, cooling the long blank tube by injecting a cooling liquid to the heating section.