TWI530335B - Pressing method and system thereof - Google Patents

Description

Pressing method and system thereof

The present invention relates to a press-fitting method and system therefor, and more particularly to a method of press-fitting a hollow tubular body and a system therefor.

In general, the hollow pipe body is used in various industries and daily life, such as the hot and cold water system or the drainage system pipeline, the steel frame structure of the bicycle, the pipeline structure inside the steam locomotive, and the exhaust pipe. Even in some mechanical or electronic devices, the heat sink or heat dissipation module is a hollow heat pipe made of metal. As a path for transmitting heat, when the mechanical or electronic device is operated, the heat generated inside is controlled by the heat pipe. The configuration path is conducted to the fins of the fan or directly to the outside.

While the general pipe body is usually a linear hollow cylinder, however, the configuration of various pipes is not only linear, and the bent hollow pipe body must be used to change the direction. In addition, there are occasional restrictions on the overall space, especially with the advancement of technology, mechanical or electronic devices are constantly improving with the goal of miniaturization, so its internal space is limited, and its internal piping must be saved. The most effective way of the effect of space is to compress the hollow cylindrical body into a flat hollow structure, which is a pressure tube.

The conventional pressure tube program directly places the hollow tube body between the two molds, generally referred to as the upper and lower molds, and directly compresses the hollow tube body by closing the upper and lower molds. However, the direct pressure tube is directly compressed. The way is not able to complete the processing program at one time, because the impact of the direct pressure tube on the hollow tube body is too large, especially It is a hollow tube made of metal. Because of its precise crystal structure, the one-time tube molding will deform it. In addition, even if the tube is directly pressed by multiple processing, although the appearance of the hollow tube body can be maintained, the surface structure of the hollow tube body is damaged, so that the overall strength is lowered and the surface is easily sunken or leveled. Corrugated roads and other damage.

Therefore, how to provide a metal pipe pressing system and a method thereof can reduce the number of processing while maintaining the integrity of the surface structure of the hollow pipe body, thereby maintaining the overall strength of the hollow pipe body, which is a hollow pipe body One of the important topics for processing manufacturers.

In view of the above problems, the present invention provides a press-fitting method and system thereof, which can simultaneously reduce the number of processing and maintain the crystal structure of the surface of the hollow tubular body, thereby maintaining the overall strength of the hollow tubular body.

To achieve the above object, the present invention provides a pressing method for pressing a hollow tubular body, and the pressing method comprises the steps of: carrying the hollow tubular body in a first mold. At least two injection portions of a pressure regulating device are respectively abutted against the openings at both ends of the closed hollow tubular body. The pressurized fluid is injected into the interior of the hollow tubular body through the injection portion. When the pressurized fluid is injected into the interior of the hollow tubular body until the pressure in the hollow tubular body is raised to a critical point of deformation, a second mold is pressed toward the first mold to press-form the hollow tubular body.

In an embodiment of the invention, the second mold is pressed against the first mold to press-form the hollow tubular body in a hollow flat shape.

In an embodiment of the invention, the second mold is pressed toward the first mold In the step, the pressure regulating device adjusts the internal pressure of the hollow pipe body.

In an embodiment of the invention, the critical point of the type change refers to the hollow tube body passing through the pressure fluid to bring the internal pressure to a saturation value before the structure is deformed.

In an embodiment of the invention, wherein the pressurized fluid is a gas, a liquid, a solid, or a combination thereof.

To achieve the above object, the present invention further provides a press-fit system for pressing a hollow tubular body, the press-fit system comprising a first mold, a second mold, and a pressure regulating device. The first mold carries a hollow tubular body. The second mold is disposed corresponding to the first mold. The pressure adjusting device has at least two injection portions, and the injection portion is abutted against the opening of both ends of the hollow tubular body, and a pressure fluid is injected into the hollow tubular body through the injection portion. When the pressurized fluid is injected into the interior of the hollow tubular body until the pressure in the hollow tubular body is raised to a type critical point, the second mold is pressed toward the first mold to press-form the hollow tubular body.

According to the above, the pressing method and system thereof of the present invention inject a pressure fluid into the hollow tubular body, and maintain the inner wall of the hollow tubular body at a critical point of deformation, and then The mold and the second mold press the hollow tube body. Compared with the conventional direct press method, the outer side of the hollow tube body is supported by the internal pressure fluid, and the surface structure is intact, and the surface structure is not easily deformed or the surface is recessed, so that the number of pressing (processing) can be reduced. .

In addition, if the hollow tube body is made of a metal material, the metal itself has a precisely arranged crystal structure, and the pressing method and system thereof of the present invention are applied to a hollow tube body of a pressed metal material compared to the prior art. The effect of maintaining the overall structure and rigidity of the hollow body of the metal is more obvious. This is because the inner tube wall is evenly stressed, and the surface crystal structure of the metal hollow tube body is more It is not easy to be destroyed or the orientation direction is changed due to the pressure of the pressing, so that the horizontal graining of the surface of the hollow pipe body can be slowed down, and the rigidity of the hollow metal pipe body as a whole can be maintained without deformation.

Hereinafter, a pressing method and a system thereof according to a preferred embodiment of the present invention will be described with reference to the accompanying drawings, wherein the same elements will be described with the same element symbols.

1 is a flow chart showing the steps of a pressing method according to a preferred embodiment of the present invention; FIG. 2A is a front view of a press-fit system according to a preferred embodiment of the present invention; and FIG. 2B is a press-fit system shown in FIG. 2A. The right side view of the AA line is shown in Figure 1 and is shown in Figure 2A and Figure 2B. A pressing method of the present invention for pressing a hollow tubular body, the pressing method comprising the steps of: carrying a hollow tubular body on a first mold (S10); and at least two injection portions of a pressure regulating device respectively Abutting against both ends of the closed hollow pipe body (S20); injecting a pressurized fluid into the hollow pipe body through the injection portion (S30); when the pressure fluid is injected into the hollow pipe body until the pressure inside the hollow pipe body is boosted When the type is changed to the critical point, the second mold is pressed toward the first mold to press-form the hollow tube (S40).

Corresponding to the above pressing method, the present invention further provides a pressing system 1 for pressing a hollow tubular body 2. The press system 1 includes a first mold 11, a second mold 12, and a pressure regulating device 13. In step S10, the hollow tubular body 2 is carried on the first mold 11, and the second mold 12 is disposed corresponding to the first mold 11, so that the hollow tubular body 2 is located in the first mold 11 and Between two molds 12.

3A is a front view of the injection pressure fluid shown in FIG. 2A; FIG. 3B is a right side view of the A-A line of the compression system shown in FIG. 3A, as shown in FIG. 3A and FIG. 3B. The pressure adjusting device 13 has at least two injection portions 131. In the present embodiment, the pressure adjusting device 13 has two injection portions 131, and in step S20, the two injection portions 131 of a pressure adjusting device 13 are respectively offset. The both end openings 21 of the hollow tubular body 2 are closed (as shown in Fig. 2A). Preferably, the injection portion 131 is in close contact with the opening 21 of the hollow tubular body 2. In the present embodiment, the injection portion 131 is a tip (or arc) shape with a front narrow and a wide width, and a wider portion at the rear end. The outer diameter system cooperates with the diameter of the opening 21. In addition, the injection portion 131 further has a passage C for injecting a pressure fluid.

In addition, the pressure regulating device 13 further includes a storage unit 132 for placing the pressure fluid 133, and in step S30, the pressure fluid 133 is injected into the hollow tubular body 2 via the injection portion 131 (for the sake of simplicity of the drawing, the present invention The figure shows only the inside of the injection portion and the storage tank, and the inner tube wall 22 of the hollow tube body 2 is evenly stressed. Wherein, the pressure fluid 133 comprises a gas, a liquid, a solid, or a combination thereof, and the gas may be, for example but not limited to, general air, helium, or nitrogen; the liquid may be, for example but not limited to, water, methanol, or acetone; However, it is not limited to glass sand or silicon carbide, and solids (such as glass sand or silicon carbide) are often used in combination gas.

In actual operation, as shown in FIG. 3A, the hollow tubular body 2 is placed in the first mold 11 (step S10), and the second mold 12 is correspondingly disposed so that the first mold 11 and the second mold 12 abut each other. Hollow tube 2, and second The mold 12 can also abut against the hollow tubular body 2 when the step S40 is reached. Then, the two injection portions 131 of the pressure adjusting device 13 move in the direction of the hollow tubular body 2, and abut against the both end openings 21 of the hollow tubular body 2 (step S20), and then the pressure fluid 133 is passed through the injection portion 131. The passage C is injected into the hollow tubular body 2 (step S30). When the pressure in the hollow tubular body 2 is increased to the critical point of the deformation, the inner tubular wall 22 of the hollow tubular body 2 is uniformly stressed, and the second mold 12 is pressed toward the first mold 11 to press-form the hollow tubular body 2 (Step S40), and the critical point of the present invention refers to the hollow tube body 2 having its internal pressure reached a saturation value by injecting the pressure fluid 133 before the structural deformation.

4A is a front view of the second mold of the press-fit system shown in FIG. 2A pressed toward the first mold; FIG. 4B is a right side view of the press-line system shown in FIG. 4A, which is also referred to FIG. 4A and FIG. 4B. And with Figure 1 as shown. In step S40, the second mold 12 is pressed against the first mold 11 to press-form the hollow tubular body 2, so that the hollow tubular body 2 after press forming has a hollow flat shape. The hollow flat shape of the present invention means that after the hollow tubular body 2 is flattened, there is still a distance between the two corresponding inner tubular walls 22, which distance depends on actual needs.

In the pressing method of the preferred embodiment of the present invention, when the second mold 12 is pressed toward the first mold 11, the step of adjusting the internal pressure of the hollow tubular body 2 by the pressure adjusting device 13 is further included. In actual operation, the pressure regulating device 13 can gradually output the pressure fluid 133 to the storage unit 132 via the injection portion 131 in reverse with the pressing rate, thereby adjusting the internal pressure of the hollow tubular body 2 to be maintained in the inner tube. The surface of the wall 22 is uniformly stressed or maintained at the critical point of the deformation, thereby making the surface structure dimension of the hollow tubular body 2 More complete. It should be noted that the step S40 and the step of adjusting the internal pressure of the hollow tubular body 2 have no time sequence, and the two steps can be simultaneously or mutually adjusted to maintain the internal pressure of the hollow tubular body 2 at a critical value. The status of the point.

The pressure fluid 133 is continuously injected into the hollow tubular body 2, and the inner tubular wall 22 of the hollow tubular body 2 is maintained at the critical point of the deformation to press the hollow tubular body 2, compared with the conventional direct pressure. In the combined method, the outer side 23 of the hollow tubular body 2 receives the supporting force from the internal pressure fluid 133, so that the hollow tubular body 2 can maintain the integrity of the surface structure, is not easily deformed or has a surface depression, so that the hollow tubular body 2 can be reduced. The number of presses (machining). However, if the hollow tube body 2 is made of a metal material, since the metal itself has a precisely arranged crystal structure, it is conventionally known that the method of directly pressing the hollow tube body 2 is more likely to cause deformation or depression, etc., compared with According to the prior art, the present invention is applied to a hollow tubular body 2 of a pressed metal material, which is more effective in maintaining the overall structure and rigidity of the metal hollow tubular body 2. This is because the inner tube wall 22 is uniformly stressed, and the surface crystal structure of the hollow metal tube 2 of the metal is more difficult to be destroyed or the direction of the arrangement is changed due to the pressure of the pressing, so that the surface of the hollow tube body can be slowed down. In the case where the horizontal grain is generated, the rigidity of the hollow metal tubular body 2 as a whole can be maintained without deformation.

5A is a front view of the hollow tube body shown in FIG. 2A; FIG. 5B is a right side view of the AA line of the press system shown in FIG. 5A. Please refer to FIG. 5A and FIG. 5B together with FIG. . After the hollow tube body 2 is pressed, the step S42 is further included, the first mold 11 and the second mold 12 are stopped, and the pressure adjusting device 13 is completely relieved by the injection portion 131. In other words, The pressure regulating device 13 can output the pressure fluid inside the hollow tubular body 2 through the passage C of the injection portion 131. At this time, the hollow tubular body 2 is pressed into a complete flat hollow tubular body (Fig. 6). Shown). Wherein, the two ends of the hollow tubular body 2 still have uncompressed portions, which can be directly cut by metal cutting or cutting (shown by broken lines in Fig. 6).

In other embodiments, the hollow tube body 2 can be pressed into different shapes by changing the shape of the first mold 11 or the second mold 12, for example, the first mold 11 and the second mold 12 can be designed to correspond to each other. The semi-elliptical shape, the pressed hollow tubular body 2 can form a complete elliptical tubular body. Wherein, since the present invention injects the pressure fluid to achieve uniform force of the inner tube wall 22, thereby generating a supporting effect on the hollow tube body 2, the surface structure of the outer side 23 is not easily damaged, and therefore, the first change is made. The shape of the mold 11 or the second mold 12 can also achieve the same effect.

In summary, the pressing method and system thereof of the present invention inject a pressure fluid into a hollow tubular body and maintain the inner wall of the hollow tubular body at a critical point of deformation, and then The mold and the second mold press the hollow tube body. Compared with the conventional direct press method, the outer side of the hollow tube body is supported by the internal pressure fluid, and the surface structure is intact, and the surface structure is not easily deformed or the surface is recessed, so that the number of pressing (processing) can be reduced. .

In addition, if the hollow tube body is made of a metal material, the metal itself has a precisely arranged crystal structure, and the pressing method and system thereof of the present invention are applied to a hollow tube body of a pressed metal material compared to the prior art. The effect of maintaining the overall structure and rigidity of the hollow body of the metal is more obvious. This is because the inner tube wall is evenly stressed, and the surface crystal structure of the metal hollow tube body is more It is not easy to be destroyed or the orientation direction is changed due to the pressure of the pressing, so that the horizontal graining of the surface of the hollow pipe body can be slowed down, and the rigidity of the hollow metal pipe body as a whole can be maintained without deformation.

The above is intended to be illustrative only and not limiting. Any equivalent modifications or alterations to the spirit and scope of the invention are intended to be included in the scope of the appended claims.

1‧‧‧Compression system

11‧‧‧First mould

12‧‧‧Second mold

13‧‧‧ Pressure regulating device

131‧‧‧Injection Department

132‧‧‧ storage unit

133‧‧‧Pressure fluid

2‧‧‧ hollow body

21‧‧‧ openings

22‧‧‧Internal wall

23‧‧‧ outside

C‧‧‧ channel

S10~S42‧‧‧Steps

1 is a flow chart showing the steps of a pressing method according to a preferred embodiment of the present invention; FIG. 2A is a front view of a press-fit system according to a preferred embodiment of the present invention; and FIG. 2B is a press-fit system shown in FIG. 2A. Figure 3A is a front view of the injection system of the pressure system shown in Figure 2A; Figure 3B is a right side view of the AA line of the compression system shown in Figure 3A; Figure 4A is the pressure shown in Figure 2A Figure 4B is a right side view of the AA line of the press system shown in Figure 4A; Figure 5A is a front view of the hollow tube shown in Figure 2A before the press fit is completed. Figure 5B is a right side view of the AA line of the press-fit system shown in Figure 5A; and Figure 6 is a front view of the hollow tube body shown in Figure 2A.

S10~S42‧‧‧Steps

Claims (8)

A pressing method for pressing a hollow tubular body, the pressing method comprising the steps of: carrying the hollow tubular body on a first mold; and at least two injecting portions of a pressure regulating device are respectively closed to close Opening the two ends of the hollow tubular body; injecting a pressurized fluid into the hollow tubular body through the injection portions; and injecting the pressurized fluid into the hollow tubular body until the pressure in the hollow tubular body is pressurized When the critical point is changed to a critical point, a second mold is pressed toward the first mold, wherein the critical point is that the hollow tube is injected into the pressure fluid to achieve a saturation value before the structural deformation. And using the pressure regulating device in combination with the pressing rate to reversely output the pressurized fluid to the storage unit of the pressure regulating device via the injection portions, so that the internal pressure of the hollow tubular body is maintained at the critical value The state of the point to press-form the hollow tubular body. The pressing method according to claim 1, wherein the second mold is press-fitted with the first mold to press-form the hollow tube body to have a hollow flat shape. The pressing method according to claim 1, wherein the pressure adjusting device adjusts an internal pressure of the hollow tubular body in the step of pressing the second mold toward the first mold. The method of pressing according to claim 1, wherein the pressure fluid is a gas, a liquid, a solid, or a combination thereof. a pressing system for pressing a hollow tube body, the pressing system comprising: a first mold carrying the hollow tube body; a second mold corresponding to the first mold; and a pressure adjustment The device has at least two injection portions and a storage unit, the injection portions are arranged to abut against the two ends of the hollow tube body, and a pressure fluid is injected into the hollow tube body through the injection portions; The pressure fluid is injected into the hollow tube body until the pressure in the hollow tube body is increased to a critical point of deformation, the second mold is pressed toward the first mold, and the pressure regulating device is reversed in accordance with the pressing rate. The pressure fluid is gradually outputted to the storage unit via the injection portions, and the internal pressure of the hollow tubular body is maintained at a critical point of the type to press-form the hollow tubular body, wherein the deformation The critical point refers to the internal pressure of the hollow pipe body to a saturation value by injecting the pressure fluid before the structure is deformed. The press-fit system of claim 5, wherein the second mold is pressed toward the first mold to press-form the hollow tube body to have a hollow flat shape. The press-fit system of claim 5, wherein the pressure regulating device adjusts an internal pressure of the hollow tubular body when the second mold is pressed toward the first mold. The nip system of claim 5, wherein the pressure fluid is a gas, a liquid, a solid, or a combination thereof.