TW201736014A - Rotating insert for flanging and widening metal tubes, "a flanging bit" - Google Patents

Abstract

Rotating insert for flanging and widening metal tubes, "a flanging bit", with a metal body, for use with flanges and metal tube widening in split-type air-conditioning connection systems, domestic refrigerators, chiller cabinets and the like; characterized by the rotary actuation method, which can be coupled to a drill or screwdriver, which requires no counterpoint mechanism (1), which is composed of a coupling cylindrical body (15) and a flanging tip with a single stage (19) or multiple stages (20), with different flanging diameters (gauges).

Description

Rotary insert for folding and widening metal pipe, flanged bit

The present invention relates to a metal insert that can be coupled to a rotary actuating method for folding/widening the ends of a metal tube. The action of the insert can be caused by a drill or a screwdriver, so that it can be folded into a metal tube, especially for a separate air conditioning connection system, a cooling system connection, and a liquefied gas delivery system for oil and the like. The connector is faster than current technology due to the heat generated by the rotation of the insert within the metal tube.

嗣, the plug-in purpose is to form: 1) a flange opening at an angle of 45° at the end of the tube; or 2) widening the metal tube for coupling with a tube of the same specification; or 3) widening the flange opening To couple another metal tube having the same diameter.

The industrial sector, primarily the refrigeration industry and commercial needs, simplifies, optimizes and reduces manufacturing and working hours. For example, the need for widening and flange formation in heat exchangers, such as copper and aluminum tubes for condensing units, and evaporator manufacturing for residential, commercial, and industrial lines.

This patent claim is related to the PI0902047-0 A2 patent, which clearly shows the features of the joint where the flanges will be applied. However, the difference from this is the method for obtaining the shape of the flange tube, or the "corner tube" treated in the above-mentioned PI0902047-0 A2 patent.

In fact, there are many mechanisms for obtaining a flange. Nevertheless, the difference of the present invention is that: 1) the operating tool pulls; 2) the operating method can use a drilling machine or a screwdriver; 3) the same insert can create multiple flanges in different specifications of the pipe, Because there is a different diameter on a single insert; 4) no need for a pair of point systems, "spike anvil" to fix the metal tube to be folded; 5) the flange is formed by heat, so the material of the flange material can be avoided Hardening; and 6) The characteristics of the final flange obtained are formed by heating, so that it has a uniform and resistant microstructure.

1, 8‧‧‧ sharp anvil

2, 9‧‧‧ clip frame

3, 10‧‧‧ screw

4,11,14‧‧‧ cone tip

5,12‧‧‧ crank drive

13‧‧‧ mandrel

15‧‧‧Cylinder

16‧‧‧Folding tip

End of 17‧‧‧

18‧‧‧Frequency

19, 20‧‧‧

21‧‧‧Slim configuration

22‧‧‧ Round corners

Figure 1 illustrates a conventional flange system.

Figure 2 illustrates the concentric arrangement between the mandrel of the conventional flange system and the tapered shaft.

Figure 3 illustrates a heterogeneous flange system.

Figure 4 illustrates the concentric arrangement between the mandrel of the heterogeneous flange system and the cone tip axis.

Figure 5 illustrates an insert in accordance with an embodiment of the present invention.

Figure 6 illustrates that the insert can be nested into one of the metal tubes.

Fig. 7 is a view showing the configuration of the end of the metal pipe.

Figure 8 illustrates the flange tip of the insert.

Figure 9 illustrates that the plugin can include one or more stages.

Figure 10 illustrates the flange tip having an elongated configuration and a rounded corner.

First, when considering the actual state of the technology, there are two flange models that exist in the market, called a) "traditional flange" and b) "heterogeneous flange".

a) the features of the conventional flange (Fig. 1) have a "pointed anvil" (1) for the fixation of the tube, and a flange system is coupled to the frame of the "pointed anvil" ( 2) A screw (3) is coupled to the frame, a 45° cone tip (4) is coupled to a screw, and a crank drive member (5) is formed in another screw. The feature of this system is the concentric arrangement between the mandrel and the cone tip axis (Fig. 2). When the flange is implemented, the area of contact between the tip and the tube can occur throughout the conical surface.

b) the features of the heterogeneous flange (Fig. 3) have a "pointed anvil" (8) for the fixation of the tube, and a flange mechanism is coupled to the frame of the "pointed anvil" ( 9) A screw (10) is coupled to the frame, a 45° cone tip (11) is coupled to a screw, and a crank drive member (12) is formed in the other screw. This system is characterized by a concentric arrangement between the mandrel (13) and the cone tip (14) (Fig. 4). When the flange is implemented, a contact area between the tip and the tube occurs over a linear contact strip of the cone.

Although the two flanged model results in a final flange configuration, the reality of the technique requires the use of a "pointed anvil" (pointer) for the flange to be strained. shape. The coupling of the tube to the "sharp anvil" and the implementation of the flange can take a lot of time to perform, as it is necessary to create four flanges for the device if applied to the split air conditioning unit. That is to say, there are two flanges for each tube, and each of these tubes must have two different specifications. Moreover, due to their concept, they all perform a conforming deformation of the tube with a cooling system, and the flange material is fouled, which causes a risk of cracking on the flange wall.

Regarding the rotary insert for folding and widening the metal tube, that is, a flange bit, it allows the widening and/or folding of the metal tube to be performed by a replaceable insert system. The inserts can be coupled to the drill (if they are coupled to a rushing or pneumatic device) or even to an electric screwdriver.

The plugin (Figure 5) can be divided into the following sections:

a) A cylindrical portion (15) can be coupled to a drill or a screwdriver driven by a flush.

b) a flanged tip (16) can be properly inserted into the metal tube (Fig. 6) and the flange (18) of the end (17) of the metal tube (Fig. 7) is formed to be approximately 45°. angle.

The flange tip (Fig. 8) may comprise a stage (19) or (Fig. 9) more stages (20) capable of causing the flange in one or more tubes without the need to have a different size in the other Or replace the plugin with a plugin of different specifications. For example, the same drill tip can measure a diameter of 6.35 mm at its end and 12.05 mm at the end closer to the cylindrical portion. In addition, it (Fig. 10) has an elongated configuration (21) and rounded corners (22) which are only gradually reduced at two points contacted by the metal tube, so that the amount of friction and scraping is also reduced.

Therefore, the present invention differs from the actual implementation of the technology in many respects. condition. First, the insert does not require a pair of points ("sharp anvils") to implement the metal tube flange. Because the strength required to secure the tube to the working position is low, the user can use his or her hand to maintain the positioning of the flange tube. Second, because it is operated by a high-speed rotating system, friction and heat are generated in the tube, which can cause the flange to conform to the deformation by the heating system, and no scaling in the flanged tube region. . The absence of fouling in the region of the flange tube avoids the problem of cracking during tight joints, which is a common problem in the current state of the art. Thirdly, the present invention allows one or more specifications to be present in the same insert, at different diameters, to reduce the time required for the implementation of the flanges, especially when installing the split air conditioner, using only one plug-in Folding is performed in several tube sizes.

The main purpose of this plug-in is to optimize its working time. Due to its speed and easy operation, it will bring higher quality results, because when the insert is folded, the tube will be hot, and The best microstructural results have more resistance.

Regarding the applicability of the product, the present invention is intended to optimize the process and time of a flange in a metal tube of a split type air conditioning system, but is not limited thereto. It can also be used in flanged joints, refrigeration appliances, or pipe connections in systems using oil liquefied gases.

1‧‧‧ sharp anvil

2‧‧‧ Clip frame

3‧‧‧ screw

4‧‧‧ cone tip

5‧‧‧Crank drive

Claims (2)

A rotary insert for a flange and widening of a metal pipe, that is, a metal-shaped flange bit, which can be applied to a split type air conditioning connection system, a home freezer, a freezer, and others; characterized by the method of rotating operation Can be coupled to a drill or screwdriver without the need for a point mechanism consisting of a coupling cylinder and a flange tip with a single stage and a different flange diameter (specification) . A rotary insert for the flange and widening of a metal pipe of claim 1, i.e., a flange bit, is characterized in that a flanged tip has a plurality of stages of different flange diameters (specifications) in a single insert.