Angle adjustment method and device for spinning expansion forming die head

Abstract

The present invention discloses a method and device for adjusting the angle of a spinning and expanding forming die head, comprising a mounting seat, a top die, a pressure cover and an adjusting seat, wherein the pressure cover is fixed on the mounting seat, and the adjusting seat is rotatably mounted on the mounting seat, and the mounting seat, the pressure cover and the adjusting seat are coaxially arranged; one end of the top die is movably mounted on the mounting seat at a position deviated from the axis center, and the other end of the top die passes through a first adjusting hole of the pressure cover and a second adjusting hole of the adjusting seat in sequence, the first adjusting hole extends radially along the mounting seat, and the second adjusting hole is an eccentric arc hole; the first adjusting hole clamps the top die, and the second adjusting hole presses the upper and lower sides of the top die; in this arrangement, only the adjusting seat needs to be rotated to change the clamping angle between the axis of the top die and the axis of the mounting seat, thereby improving the production efficiency of spinning and expanding the pipe fittings.

Description

Technical Field

[0001] The invention relates to the field of spinning and expanding holes, and in particular to a method and device for adjusting the angle of a spinning and expanding forming die head. Background Art

[0002] Pipe flaring is a forming process that enlarges the diameter of the mouth of the tube blank. According to the use requirements of the pipe fitting, the pipe end is formed into a conical, cylindrical or other shaped part. By correcting the angle of the top die, the pipe end can be flared in different shapes; as an important component of the spinning flaring forming, its manufacturing accuracy and assembly accuracy affect the flaring accuracy of the final pipe fitting. During daily use, the flaring angle effect of the top die will need to be corrected due to changes in materials and pipe fittings, resulting in an increase in the workload of manual debugging. The present invention creates an angle adjustment function for the top die of spinning flaring forming, which realizes that the top die does not need to be repeatedly disassembled to adjust the die angle. The processing angle that meets the use requirements can be achieved through the adjustment of the mechanism, thereby improving the flaring forming processing quality, improving the top die debugging efficiency, and reducing the difficulty of the top die manufacturing process.

[0003] The current top die design used for spinning and flaring already meets the relevant requirements in terms of forming effect and precision control. The top die is first machined to a theoretical angle, and then repeatedly disassembled and re-done to achieve the desired angle based on the desired flaring angle. This method firstly incurs a high labor cost due to the repeated disassembly and grinding of the top die. If the grinding angle is excessive, the top die will be scrapped, and it requires a high level of operator skill, which affects processing efficiency.

[0004] The prior art with publication number CN214517180U discloses a spinning head for a pipe expander, comprising an outer tube body, an inner cone and a roller cooperating with the tube body to be expanded, a movable claw is provided between the outer tube body and the inner cone for pushing the roller to expand radially, the outer surface of the movable claw is provided with a roller mounting groove, the inner surface of the movable claw is provided with a conical surface cooperating with the inner cone, a connecting rod is passed through the inner cone and is fixedly connected to the power device on the pipe expander; a positioning seat for positioning the outer tube body and the inner end of the inner cone is fixed at the inner end of the connecting rod, a positioning sleeve for positioning the outer tube body and the outer end of the inner cone is provided at the outer end of the connecting rod, and a number of washers for adjusting the protruding height of the roller on the outer tube body are provided on the connecting rod between the positioning sleeve and the positioning seat.

[0005] In the prior art, in order to change the spinning angle and spinning depth, it is still necessary to repeatedly disassemble, and the depth of the spinning hole is controlled by adding or removing washers, which still leads to reduced processing efficiency. In addition, since the thickness of the gasket is fixed, the change in the aperture of the hole is also a step-by-step change. When processing some thin-walled pipes, the pipe wall may be broken due to the large thickness of the gasket. Summary of the Invention

[0006] In order to solve the problem of low processing efficiency caused by the need to repeatedly disassemble and grind the top die during the expansion process in the prior art, the purpose of the present invention is to provide a method and device for adjusting the angle of the spinning expansion die head, so that there is no need to disassemble and grind during the spinning expansion process, and the spinning angle can be adjusted arbitrarily within a certain range, reducing the angle adjustment requirements and improving the efficiency of the spinning expansion of pipe fittings.

[0007] 4. The repairing kit for automotive dents, according to claim 1, wherein a bottom of the foot stand comprises a through-hole, and the two foot pieces comprise two bosses, wherein the bosses comprise a through-hole, a screw bolt, and a nut. The through-hole comprises a first end, a second end, and a second end. The bosses comprise a through-hole, a screw bolt, and a nut. The through-hole comprises a first end, a second end, and a second end. The bosses comprise a through-hole, a screw bolt, and a nut.

[0008] When adjusting the clamping angle between the top mold and the mounting seat: rotate the adjusting seat, and the adjusting seat drives the top mold through the third limit surface and the fourth limit surface, so that the spinning part of the top mold swings along the second adjustment hole of the pressure cover, thereby changing the angle between the axis of the top mold and the axis of the mounting seat.

[0009] Preferably, a motor is installed on the mounting seat, and the motor is used to drive the adjustment seat to rotate.

[0010] Preferably, a gear ring is fixed on the adjustment seat, and a gear is installed on the output end of the motor, and the gear is meshed with the gear ring for transmission.

[0011] Preferably, the outer diameter of the gear is smaller than the outer diameter of the ring gear.

[0012] Preferably, the top mold includes a spinning part, a first connecting part and a mounting part, the spinning part and the mounting part are connected through the first connecting part, the position deviating from the axis on the mounting seat is connected to the mounting part, the first connecting part passes through the first adjustment hole and the second adjustment hole, and the spinning part is located on the outside of the adjustment seat.

[0013] Preferably, the mounting portion is spherical, a hemispherical groove is provided at the front end of the mounting seat, the rear end of the mounting portion is inserted into the hemispherical groove, and the pressure cover presses the front end of the mounting portion.

[0014] Preferably, a second connecting portion is protruded from the mounting seat, a connecting plate is sleeved on the mounting seat, the adjustment seat is in the shape of a cover, the adjustment seat buckles the pressure cover and the second connecting portion of the mounting seat, and the front end of the connecting plate is fixedly connected to the rear end of the adjustment seat.

[0015] Preferably, the distance between the first limiting surface and the second limiting surface on the first adjustment hole matches the first connecting portion of the top mold, and the distance between the third limiting surface and the fourth limiting surface on the second adjustment hole is not less than the first connecting portion of the top mold.

[0016] Preferably, a third connecting portion for installation is protruded from the mounting seat.

[0017] An angle adjustment device for a spinning and expanding forming die head is provided, which applies the above-mentioned angle adjustment method for a spinning and expanding forming die head. The adjustment device comprises a mounting seat, a top die, a pressure cover and an adjustment seat.

[0018] The beneficial effects of the technical solution of the present invention are as follows: this solution can easily and quickly adjust the spinning angle of the top mold to any angle within a certain range only by rotating the adjustment seat. Therefore, the angle adjustment device can be used to spin pipe fittings of various angles. Its scope of use is wider, and it is suitable for spinning reducers and pipe fittings with variable diameter angle requirements. It can also reduce the difficulty of spinning angle control, reduce the conditions for the applicable population, and improve the production efficiency of spinning and expanding holes of pipe fittings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the structure of a device for adjusting the angle of a spinning expansion die head Figure 1 ;

[0020] Figure 2 A schematic diagram of the structure of a device for adjusting the angle of a spinning expansion die head Figure 2 ;

[0021] Figure 3 A schematic diagram of the structure of a device for adjusting the angle of a spinning expansion die head Figure 3 ;

[0022] Figure 4 A schematic diagram of the structure of a device for adjusting the angle of a spinning expansion die head Figure 4 ;

[0023] Figure 5 A schematic diagram of the structure of a device for adjusting the angle of a spinning expansion die head Figure 5 ;

[0024] Figure 6 A schematic diagram of the structure of a device for adjusting the angle of a spinning expansion die head Figure 6 ;

[0025] Figure 7 A schematic diagram of the structure of a device for adjusting the angle of a spinning expansion die head Figure 7 ;

[0026] Figure 8 Schematic diagram of the structure of the top mold;

[0027] Figure 9 Schematic diagram of the gland structure Figure 1 ;

[0028] Figure 10 Schematic diagram of the gland structure Figure 2 ;

[0029] Figure 11 It is a structural diagram of the adjustment seat.

[0030] Figure markings: 1. Mounting seat; 11. Hemispherical groove; 12. Positioning hole; 13. Third connecting part; 14. Second connecting part; 2. Top mold; 21. Mounting part; 22. First connecting part; 23. Spinning part; 3. Ring gear; 4. Connecting plate; 5. Adjusting seat; 51. Second adjusting hole; 511. Third limiting surface; 512. Fourth limiting surface; 6. Pressing cover; 61. First adjusting hole; 611. First limiting surface; 612. Second limiting surface; 62. Pressing groove; 7. Positioning seat; 8. Gear. Implementation Method

[0031] The following describes embodiments of the present invention in detail, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and are not to be construed as limiting the present invention.

[0032] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0033] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "plurality" means two or more, unless otherwise explicitly specified.

[0034] In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connect," "fixed," etc. should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0035] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0036] The following embodiments are described in Figure 1 shall prevail. Figure 1 In the middle, the position of the adjustment seat is the front, the position of the third connecting part is the back, and the position of the gear is the right. Example

[0037] An angle adjustment device for a spinning and expanding die head, such as Figure 1-7As shown, it includes a mounting base 1, a top mold 2, a pressure cover 6 and an adjustment base 5, the pressure cover 6 is fixed on the mounting base 1, the adjustment base 5 is rotatably mounted on the mounting base 1, and the mounting base 1, the pressure cover 6 and the adjustment base 5 are coaxially arranged; a first adjustment hole 61 is opened on the pressure cover 6, and a second adjustment hole 51 is opened on the adjustment base 5. The first adjustment hole 61 is a waist-shaped hole, the first adjustment hole 61 extends along the radial direction of the mounting base 1, and the second adjustment hole 51 is an eccentric arc-shaped hole; the first adjustment hole 61 includes a first limiting surface 61 arranged oppositely. 1 and a second limiting surface 612, the second adjusting hole 51 includes a third limiting surface 511 and a fourth limiting surface 512 arranged opposite to each other, one end of the top mold 2 is movably mounted on the mounting base 1 at a position deviated from the axis, and the other end of the top mold 2 passes through the first adjusting hole 61 and the second adjusting hole 51 in sequence, the first limiting surface 611 and the second limiting surface 612 of the first adjusting hole 61 limit the top mold 2 from the left and right sides, and the second adjusting hole 51 limits the top mold 2 from the upper and lower sides through the third limiting surface 511 and the fourth limiting surface 512;

[0038] A method for adjusting the angle of a spinning and flaring die head employs the aforementioned angle adjustment device for the spinning and flaring die head. The method comprises rotating the adjustment seat 5, which drives the top die 2 via the third limiting surface 511 and the fourth limiting surface 512, causing the top die 2 to swing radially along the second adjustment hole 51 of the gland 6, thereby changing the clamping angle between the axis of the top die 2 and the axis of the mounting seat 1.

[0039] With such a configuration, the spinning angle of the top mold 2 can be easily and quickly adjusted to any angle within a certain range by simply rotating the adjustment seat 5. Therefore, the angle adjustment device can be used to spin pipe fittings of various angles, and its scope of use is wider. It is also suitable for spinning reducers and pipe fittings with variable diameter angle requirements. It can also reduce the difficulty of controlling the spinning angle, reduce the conditions for the applicable population, and improve the production efficiency of spinning and expanding holes of pipe fittings.

[0040] In order to accurately control the spinning angle, in this embodiment, Figure 1 、 Figure 4 、 Figure 6 and Figure 7As shown, a motor is installed on the mounting seat 1, and the motor is used to drive the adjustment seat 5 to rotate. With this arrangement, the rotation angle of the adjustment seat 5 can be accurately controlled by electric control, and thus the swing angle of the top mold 2 can be accurately controlled. Further preferably, a ring gear 3 is fixed on the adjustment seat 5, a gear 8 is installed on the output end of the motor, and the gear 8 is meshed with the ring gear 3 for transmission, and a positioning seat 7 is fixed on the mounting seat 1, and the motor is installed on the positioning seat 7. This makes the control more precise. Further preferably, the outer diameter of the gear 8 is smaller than the outer diameter of the ring gear 3. With this arrangement, the large ring gear 3 is driven by the small gear 8 to achieve a deceleration effect, thereby making the control more precise.

[0041] In order to facilitate the installation of the top mold 2, in this embodiment, as Figure 1-8 As shown, the top mold 2 includes a spinning portion 23, a first connecting portion 22 and a mounting portion 21. The spinning portion 23 and the mounting portion 21 are connected through the first connecting portion 22. The position of the mounting seat 1 that deviates from the axis is connected to the mounting portion 21. The first connecting portion 22 passes through the first adjustment hole 61 and the second adjustment hole 51, and the spinning portion 23 is located on the outside of the adjustment seat 5. With such an arrangement, the three-section design of the top mold 2 is convenient for connecting the various parts on the one hand, and is also more convenient for assembling the device. Further preferably, the mounting portion 21 is spherical, and a hemispherical groove 11 is provided at the front end of the mounting seat 1. The hemispherical groove 11 is arranged at a position deviated from the axis of the mounting seat 1. The rear end of the mounting portion 21 is inserted into the hemispherical groove 11, and the pressure cover 6 presses the front end of the mounting portion 21. With such an arrangement, the top mold 2 can be quickly positioned and installed through the above-mentioned method and structure, and the spherical design also makes the movement of the top mold 2 more flexible. Further preferably, the rear end of the pressure cap 6 is provided with a pressure groove 62, and the first adjustment hole 61 is connected to the pressure groove 62. The inner wall of the pressure groove 62 is arc-shaped and matches the mounting portion 21 of the top mold 2. When the top mold 2 is installed, the rear end of the mounting portion 21 of the top mold 2 is located within the hemispherical groove 11, and the front end of the mounting portion 21 of the top mold 2 is located within the pressure groove 62. The pressure cap 6 and the front end of the positioning seat 7 abut against each other. This not only facilitates the installation of the top mold 2, but also reduces the gap between the mounting seat 1 and the pressure cap 6, making the structure of the device more compact and the movement of the top mold 2 more stable. Further preferably, the pressure groove 62 is a radially extending waist-shaped groove. Further preferably, the first connecting portion 22 is cylindrical, and the spinning portion 23 is frustum-shaped. The spinning portion 23 extends from the second adjustment hole 51. The first adjustment hole 61 and the second adjustment hole 51 both abut against the first connecting portion. The outer diameter of the first connecting portion 23 is smaller than the diameter of the mounting portion 21. This further facilitates the installation and positioning of the top mold.

[0042] In order to facilitate the positioning of the adjustment seat 5, in this embodiment, as Figure 1-7As shown, the mounting base 1 is provided with a second connecting portion 14, the mounting base 1 is sleeved with a connecting plate 4, the rear end of the adjusting base 5 is provided with an opening, so that the adjusting base 5 is in the shape of a cover, the second adjusting hole 51 is connected to the opening, the adjusting base 5 buckles the second connecting portion 14 of the pressure cover 6 and the mounting base 1, so that the pressure cover 6 and the second connecting portion 14 of the mounting base 1 are located in the opening, and the front end of the connecting plate 4 is fixedly connected to the rear end of the adjusting base 5. With this arrangement, the opening of the adjusting base 5 can sleeve the front end of the pressure cover 6 and the mounting base 1, so that the adjusting base 5 and the mounting base 1 can be better coaxial, maintain the working environment of the top mold 2 in the opening, and also avoid radial movement of the mounting base 1, making the device adjustment process more precise.

[0043] To ensure stability during the angle adjustment of the top die 2 and the spinning process of the device, in this embodiment, the diameter of the first adjustment hole 61 matches that of the top die 2, and the diameter of the second adjustment hole 51 is larger than the portion of the top die 2 that passes through the second adjustment hole 51. This arrangement limits the top die 2 in all four directions, preventing vibration of the top die 2 during operation and ensuring processing accuracy. To facilitate installation of the device, the rear end of the mounting base 1 is protruded with an annular third connecting portion 13, and the rear end of the mounting base 1 is also provided with a positioning hole 12 coaxial with the axis of the mounting base 1.

[0044] It should be noted that when the axis of the top mold is parallel to the axis of the mounting seat, the first connecting portion 22 of the top mold is offset against point A of the third limiting surface 511, and the first connecting portion 22 of the top mold is offset against point B of the fourth limiting surface 512. At this time, the distance between point A and point B is the shortest distance between the third limiting surface 511 and the fourth limiting surface 512; and the distance between the end of the third limiting surface 511 and the fourth limiting surface 512 is gradual, wherein, starting from point A and point B to the end of the third limiting surface 511 and the end of the fourth limiting surface 512, the distance between the end of the third limiting surface 511 and the fourth limiting surface 512 gradually increases.

[0045] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "examples," "specific examples," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0046] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention without departing from the principles and purpose of the present invention.

Claims

1. A method for adjusting the angle of a spinning and expanding die head, characterized in that: An angle adjustment device is used to implement angle adjustment of a spinning and expanding forming die head, the angle adjustment device comprising a mounting seat (1), a top die (2), a pressure cover (6) and an adjustment seat (5), the pressure cover (6) being fixed on the mounting seat (1), the adjustment seat (5) being rotatably mounted on the mounting seat (1), and the mounting seat (1), the pressure cover (6) and the adjustment seat (5) being coaxially arranged; The pressure cover (6) is provided with a first adjustment hole (61), and the adjustment seat (5) is provided with a second adjustment hole (51). The first adjustment hole (61) is a waist-shaped hole, extending radially along the mounting seat (1), and the second adjustment hole (51) is an eccentric arc-shaped hole. The first adjustment hole (61) includes a first limiting surface (611) and a second limiting surface (612) that are arranged opposite to each other, and the second adjustment hole (51) includes a third limiting surface (511) and a fourth limiting surface (512) that are arranged opposite to each other. One end of the top mold (2) is movably mounted on the mounting seat (1) at a position deviated from the axis, and the other end of the top mold (2) passes through the first adjustment hole (61) and the second adjustment hole (51) in sequence. The first limiting surface (611) and the second limiting surface (612) of the first adjustment hole (61) limit the top mold (2) from the left and right sides, and the second adjustment hole (51) limits the top mold (2) from the upper and lower sides through the third limiting surface (511) and the fourth limiting surface (512); When adjusting the clamping angle between the top die (2) and the mounting seat (1), the adjusting seat (5) is rotated, and the adjusting seat (5) drives the top die (2) through the third limiting surface (511) and the fourth limiting surface (512), so that the spinning portion (23) of the top die (2) swings along the second adjusting hole (51) of the pressure cover (6), thereby changing the angle between the axis of the top die (2) and the axis of the mounting seat (1).

2. The method for adjusting the angle of a spinning and expanding die head according to claim 1, wherein: A motor is mounted on the mounting seat (1), and the motor is used to drive the adjustment seat (5) to rotate.

3. The method for adjusting the angle of a spinning and expanding die head according to claim 2, wherein: A gear ring (3) is fixed on the adjustment seat (5), a gear (8) is installed on the output end of the motor, and the gear (8) is meshed with the gear ring (3) for transmission.

4. The method for adjusting the angle of a spinning and expanding die head according to claim 3, wherein: The outer diameter of the gear (8) is smaller than the outer diameter of the ring gear (3).

5. The method for adjusting the angle of a spinning and expanding die head according to claim 1, wherein: The top mold (2) comprises a spinning portion (23), a first connecting portion (22) and a mounting portion (21), wherein the spinning portion (23) and the mounting portion (21) are connected via the first connecting portion (22), a position on the mounting seat (1) that deviates from the axis is connected to the mounting portion (21), the first connecting portion (22) passes through the first adjustment hole (61) and the second adjustment hole (51), and the spinning portion (23) is located outside the adjustment seat (5).

6. The method for adjusting the angle of a spinning and expanding die head according to claim 5, characterized in that: The mounting portion (21) is spherical, a hemispherical groove (11) is provided at the front end of the mounting seat (1), the rear end of the mounting portion (21) is inserted into the hemispherical groove (11), and the pressure cover (6) presses the front end of the mounting portion (21).

7. The method for adjusting the angle of a spinning and expanding die head according to claim 5, wherein: The spacing between the first limiting surface (611) and the second limiting surface (612) on the first adjusting hole (61) matches the first connecting portion (22) of the top mold (2), and the spacing between the third limiting surface (511) and the fourth limiting surface (512) on the second adjusting hole (51) is not less than the first connecting portion (22) of the top mold (2).

8. The method for adjusting the angle of a spinning and expanding die head according to claim 1, wherein: A second connecting portion (14) is protruded from the mounting seat (1), a connecting plate (4) is sleeved on the mounting seat (1), and the adjusting seat (5) is in a cover shape. The adjusting seat (5) buckles the pressure cover (6) and the second connecting portion (14) of the mounting seat (1), and the front end of the connecting plate (4) is fixedly connected to the rear end of the adjusting seat (5).

9. The method for adjusting the angle of a spinning and expanding die head according to claim 1, wherein: A third connecting portion (13) for installation is protruded from the mounting seat (1).

10. An angle adjustment device for a spinning and expanding die head, characterized in that: A method for adjusting the angle of a spinning and expanding forming die head according to any one of claims 1 to 9 is used.

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