JPS5956939A - Manufacturing device of petal-shape finned tube - Google Patents

Abstract

PURPOSE:To obtain a high quality petal-shape finned tube efficiency by arranging plural pins and a rotary disk provided with forming punches and a bracket that supports the disk around a core tube and carrying out forming and winding continuously. CONSTITUTION:Ribbons 2 are placed on each pin 9 passing under the tips of forming punches 10. A core tube 1 and a rotary disk 4 are rotated in a body continuously, and a moving truck on which a bracket 5 is fixed is moved. The forming punches 10 attached to the rotary disk 4 move toward the core tube 1, push supplied ribbons 2 continuously and retreat at the point of completion of forming. When forming punches 10 work inward, the ribbons 2 are held between the pins 9 and punches 10 and formed into petal-shape. When the rotary disk 4 is moved simultaneously, formed ribbons 2 are wound on the core tube 1 spirally. In this device, the forming punches 10 are connected to a cam 13 fixed to the bracket 5 through cam followers 11, 12.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for manufacturing petal-shaped fin side tubes used, for example, in heat exchangers.

The applicant first arranged a waveform shaping device around the core pipe,
After winding the molded fiber formed from the fins around the core tube by the waveform shaping device and the intermittent rotation of the core tube as well as the relative intermittent movement of the triangular waveform shaping device in the core tube axis direction, We have developed and proposed a manufacturing device for petal-shaped finned tubes that are heated and soldered together.

However, in the invention, since the forming operation and the winding operation can be performed intermittently, productivity can be improved by speeding up. However, there is a problem in that the formed and rolled fin material is disturbed, which impairs the quality of the product.

An object of the present invention is to improve the productivity of finned tubes by making the forming operation and winding operation continuous.

An explanation will be given below based on the embodiment shown in the drawings.

Ribbon 1 is fixed to the main frame of the core tube manufacturing device (not shown) and rotates as a unit with a chuck that rotates in conjunction with the drive device. Ribbon 2 moves in the axial direction of the core tube 1. It is fed from a reel (not shown) attached to the movable cart 3 in the direction of arrow a, and wound onto a pin (e), which will be described later.

The moving trolley 3 is a morph, a binion whose rotation source is a reducer,
It is moved linearly in the axial direction of the core tube by a drive device such as a rack, screw, or nut. Reference numeral 4 denotes a rotary disc, which is rotatably supported by a shaft 6 on a platen 1-5 fixedly installed on a movable cart 3, and has a pulley 7 fixed to one end thereof, and a belt 8 wound around the pulley 7. The rotary disk Φ and the core tube 1 are rotated as one unit. The other side end surface e
Here, a plurality of pins 9 planted in an annular shape and the same number of molded punches 10 are fitted so as to be slidable in the radial direction between the pins 9 with an inclination angle to the tiff surface. The cam 1-5 is engaged with the cam 13 fixed to the cam 1-5 via a cam follower roller attached to the cam 1-5.

When the forming punch 3 is positioned in the forming range A shown in FIG.
When the ribbon 2 moves inward and passes through the forming area, it gradually retreats diagonally outward, and at the passing position of the ribbon 2, it completely retreats into the rotating disk Φ, causing a hindrance to the feed of the ribbon 2. A shallow cam surface is formed on the cam 1 that guides the e-forming punch 3 so as to prevent the punch from forming.

To manufacture a finned tube using the apparatus configured as described above, the core tube 1 is first inserted into the rotating disk 4, one end of which is gripped by a chuck that rotates in conjunction with the drive device e, and the other end is held as shown in the figure. It is rotatably supported on a support device that does not have the same structure.

Next, the unwound ribbon 2 is transferred to the third reel as appropriate.
Forming area A in the figure: Place the tip of the forming punch 1o under each pin 9.

In this state, the core tube 1 and the rotary disk 4 are continuously rotated as one unit by the rotary drive device t, and the movable cart on which the bracket 5 is fixed is moved at a constant speed in the axial direction e of the core tube 1. When moving, the forming punch 1o mounted on the rotating disk 4 operates toward the core tube 1 from the forming start point, starts pushing the continuously supplied ribbon 2, and reaches the forming end point. Step by step backwards.

When the forming punch 1o operates inward, the ribbon 2 is pinched between the pin 9 and the forming pan and formed into a petal shape, and at the same time the rotating disk 4 is moved in the same direction t together with the moving carriage. The ribbon shaped into a petal shape is wound around a spiral core tube 1.

Solder is applied to the outer surface of the core tube l in advance, and a finned tube is manufactured by heating the ribbon-wrapped tube with a heating device (not shown).

Since the present invention has the structure and function as described above,
The ribbon 2 can be spirally wound on the core tube while being continuously e-formed, and one fin tube of excellent quality can be manufactured efficiently and continuously, improving productivity and reducing costs. (・This is extremely effective.

[Brief explanation of drawings]

FIG. 1 is a perspective view of the entire apparatus, FIG. 2 is a side sectional view of the molding section, and FIG. 3 is a front view. 2. Core tube 2. Ribbon 3. Moving cart 4. Rotating disk 5. Bracket 6. Bearing 7. Pulley 8. Belt 9.. Bin ] 0. Forming punch II, 12. ...Camph A lower roller 13...Cam applicant Sumitomo Heavy Industries, Ltd. Fukudai Uto: 11'T' Uji Ohashi Both boxes 1 Fig. 193- Fig. 2

Claims (1)

[Claims] A rotating disk equipped with a plurality of bottles planted in an annular shape at the side end and the same number of molded punches, and a placket that rotatably supports the rotating disk are arranged around the core tube, and the rotating The disk and the core tube are integrated into one unit (a device for continuously rotating the disk and a device for continuously moving the placket in the axial direction of the core tube are provided), and a forming punch is tilted toward the disk surface of the rotating disk to form each pin. The outer end of the forming punch that penetrates the rotary disk is fitted with a cam follower roller that engages with an annular cam that is fixed to the placket. Finite τj tube manufacturing equipment.