A one-time use flanging and curling die

Abstract

A kind of one-off flanging roll forming die, including base, lower workbench of circular table structure is arranged above base and is used to place workpiece, center hole is processed in the middle of lower workbench and is provided with hole flanging die, radial installation slider is provided on the upper portion of lower workbench, third gas spring is connected to the outside of slider, pressure block is provided above slider, upper workbench is connected to the upper portion of pressure block by fourth gas spring, flanging die is fixed in the middle of upper workbench and corresponds with hole flanging die, pressure rod is provided outside flanging die and is matched with slider, flanging forming groove is processed along the circumferential direction at the lower edge of flanging die.Working, pressure block is pressed down by slider, while pressure block moves to center by third gas spring, hole flanging die cooperates slider and punches the through hole of workpiece into upper hole, then cooperates flanging die and pressure rod and carries out flanging at the edge of upper hole.The device realizes upper hole and flanging by combined die, stamping precision is high, processing efficiency is greatly improved, and degree of automation is high.

Description

Technical Field

[0001] This utility model relates to a mold for one-time flanging and rolling. Background Technology

[0002] like Figure 6-7 The workpiece shown is a disc structure with a flanged hole in the center and a rolled edge. After being formed, this workpiece is used as a connector in automotive parts. The existing processing method generally uses two stations to process it. First, the through hole is flanged, and then the edge is rolled. The two processing processes involve two positioning, which results in low processing accuracy of the product and affects its subsequent use. Utility Model Content

[0003] To address the shortcomings mentioned above, this utility model provides a mold for one-time flanging and rolling.

[0004] To achieve the above objectives, this utility model provides a one-time flanging and rolling mold, including a base, a lower worktable with a frustum structure above the base for placing workpieces, a center hole machined in the middle of the lower worktable, a flanging mold housed in the center hole, the lower part of the lower worktable connected to the base via a second gas spring, the lower part of the flanging mold connected to the base via a first gas spring, a slider radially mounted on the upper part of the lower worktable, a third gas spring connected to the outer side of the slider, a pressure block above the slider, the upper part of the pressure block connected to an upper worktable via a fourth gas spring, a curling mold fixed in the middle of the upper worktable corresponding to the flanging mold, a pressure rod on the outer side of the curling mold cooperating with the slider, and a curling forming groove machined along the circumferential direction at the lower edge of the curling mold.

[0005] As a further improvement of this utility model, the slider has a fan-shaped structure and is evenly arranged along the circumference of the lower worktable. The lower part of the slider is slidably connected to the lower worktable through a slide rail, and a return spring is provided between the slide rail and the slider.

[0006] As a further improvement of this utility model, a stepped portion is machined on the inner side of the slider to avoid the edge-rolling die.

[0007] As a further improvement of this utility model, the pressure block has a cover-shaped structure, the inner sidewall of the pressure block is machined to form a pressure block slope, the third gas spring is arranged radially along the lower worktable, and the slope of the end of the third gas spring matches the slope of the pressure block.

[0008] As a further improvement of this utility model, an avoidance hole is machined at the center of the pressure block to allow the edge rolling die and the pressure rod to pass through.

[0009] As a further improvement of this utility model, the lower part of the pressure rod is machined to form a pressure rod inclined surface, and the upper part of the inner side of the slider is machined to form a slider inclined surface that matches the pressure rod inclined surface.

[0010] As a further improvement of this utility model, the initial height of the hole-flipping mold is lower than that of the lower worktable.

[0011] As a further improvement of this utility model, the distance between the slider and the lower worktable is matched with the thickness of the workpiece.

[0012] The beneficial effects of this utility model are as follows:

[0013] This device uses a combination mold to create an upward-facing hole and rolled edge in the middle of the workpiece, forming it in one stamping process. The stamped product has high precision, greatly improves processing efficiency, and has a high degree of automation. Attached Figure Description

[0014] Figure 1 This is a front view of a one-time flanging and rolling mold according to the present invention;

[0015] Figure 2 This is a schematic diagram of the working process of a one-time flanging and rolling mold according to this utility model. Figure I ;

[0016] Figure 3 for Figure 2 Sectional view along line AA;

[0017] Figure 4 This is a schematic diagram of the working process of a one-time flanging and rolling mold according to this utility model. Figure II ;

[0018] Figure 5 This is a sectional view of workpiece 10 before machining;

[0019] Figure 6 This is a sectional view of workpiece 10 after it has been machined and formed.

[0020] Figure 7 This is a top view of workpiece 10 after it has been machined and formed.

[0021] In the diagram: 1. Base; 2. Flipping die; 21. First gas spring; 3. Lower worktable; 31. Second gas spring; 32. Center hole; 4. Slide rail; 41. Return spring; 5. Slider; 51. Slider inclined surface; 52. Third gas spring; 53. Inclined surface; 54. Step; 6. Pressure block; 61. Pressure block inclined surface; 62. Fourth gas spring; 63. Clearance hole; 7. Edge rolling die; 71. Edge rolling forming groove; 8. Pressure rod; 81. Pressure rod inclined surface; 9. Upper worktable; 10. Workpiece; 101. Through hole; 102. Upward flipping hole; 103. Edge rolling. Detailed Implementation

[0022] like Figure 1 As shown, the present invention discloses a one-time flanging and rolling mold, comprising a base 1, a lower worktable 3 with a frustum structure above the base 1 for placing a workpiece 10, a center hole 32 machined in the middle of the lower worktable 3, a flanging mold 2 housed in the center hole 32, the initial height of the flanging mold 2 being lower than the lower worktable 3, the lower part of the lower worktable 3 being connected to the base 1 via a second gas spring 31, the lower part of the flanging mold 2 being connected to the base 1 via a first gas spring 21, a slider 5 radially mounted on the upper part of the lower worktable 3, the slider 5 having a fan-shaped structure, the slider 5 being evenly arranged along the circumference of the lower worktable 3, the lower part of the slider 5 being slidably connected to the lower worktable 3 via a slide rail 4, the distance between the slider 5 and the lower worktable 3 matching the thickness of the workpiece 10, a return spring 41 between the slide rail 4 and the slider 5, a third gas spring 52 connected to the outside of the slider 5, and a... The pressure block 6 is connected to the upper worktable 9 via a fourth gas spring 62. The elastic force of the fourth gas spring 62 is greater than that of the second gas spring 31. The pressure block 6 has a cover-shaped structure. The inner side wall of the pressure block 6 is machined to form a pressure block inclined surface 61. The third gas spring 52 is arranged radially along the lower worktable 3. The end of the third gas spring 52 is machined with an inclined surface 53 that matches the pressure block inclined surface 61. The middle of the upper worktable 9 is fixed with a curling mold 7 corresponding to the turning mold 2. The inner side of the slider 5 is machined with a step part 54 to avoid the curling mold 7. The outer side of the curling mold 7 is provided with a pressure rod 8 that cooperates with the slider 5. The lower part of the pressure rod 8 is machined to form a pressure rod inclined surface 81. The upper inner side of the slider 5 is machined with a slider inclined surface 51 that matches the pressure rod inclined surface 81. The lower edge of the curling mold 7 is machined with a curling forming groove 71 along the circumferential direction. The center of the pressure block 6 is machined with an avoidance hole 63 for the curling mold 7 and the pressure rod 8 to pass through.

[0023] This device uses a combination mold to create an upward-facing hole and rolled edge in the middle of the workpiece, forming it in one stamping process. The stamped product has high precision, greatly improves processing efficiency, and has a high degree of automation.

[0024] In practical use, for ease of understanding of this utility model, it will be described in conjunction with the accompanying drawings;

[0025] like Figure 5-7 The diagram shows the structure of the workpiece 10 before and after stamping. In this embodiment, the mold structure is mainly used to stamp the through hole 101 at the center of the workpiece 10 into an upturned hole 102, and then stamp out the rolled edge 103 at the edge of the upturned hole 102.

[0026] During operation, the slider is in the retracted state, and the workpiece with a through hole is placed at the center of the lower worktable. The inner diameter of the through hole in the workpiece is smaller than the inner diameter of the center hole of the lower worktable. Then, the upper worktable moves down as a whole, the lower surface of the pressure block contacts the upper surface of the slider and presses the slider down. The lower worktable and the workpiece move down synchronously with the slider. At the same time, the inclined surface of the pressure block on the inner side of the pressure block contacts the inclined surface at the end of the third gas spring, pushing the slider to move to the center of the lower worktable. After the slider retracts, it cooperates with the flanging die to punch the edge of the through hole of the workpiece to form an upward flanging hole. As the upper worktable continues to move down, the inclined surface of the pressure rod at the lower part of the pressure rod contacts the inclined surface of the slider on the inner side of the slider. The slider overcomes the elastic force of the third gas spring and moves outward to make room for the edge-rolling die. The edge-rolling die presses down the flanging die, and the edge-rolling die punches the upward flanging hole through the edge-rolling forming groove at the bottom to form an edge. After forming, the upper worktable moves up, all parts are reset, the formed workpiece is taken out, and it waits for the next stamping.

[0027] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A mold for one-time flanging and rolling, characterized in that: Includes a base (1), above which is a lower worktable (3) with a frustum structure for placing workpieces (10). A center hole (32) is machined in the middle of the lower worktable (3), and a piercing mold (2) is built into the center hole (32). The lower part of the lower worktable (3) is connected to the base (1) by a second gas spring (31), and the lower part of the piercing mold (2) is connected to the base (1) by a first gas spring (21). A slider is radially installed on the upper part of the lower worktable (3). (5) The outer side of the slider (5) is connected to a third gas spring (52). A pressure block (6) is provided above the slider (5). The upper part of the pressure block (6) is connected to the upper worktable (9) through a fourth gas spring (62). A curling mold (7) is fixed in the middle of the upper worktable (9) and corresponds to the hole-turning mold (2). A pressure rod (8) is provided on the outer side of the curling mold (7) to cooperate with the slider (5). A curling forming groove (71) is processed along the circumferential direction at the lower edge of the curling mold (7).

2. The mold for one-time flanging and rolling according to claim 1, characterized in that: The slider (5) has a fan-shaped structure and is evenly arranged along the circumference of the lower worktable (3). The lower part of the slider (5) is slidably connected to the lower worktable (3) through the slide rail (4). A return spring (41) is provided between the slide rail (4) and the slider (5).

3. The mold for one-time flanging and rolling according to claim 2, characterized in that: The inner side of the slider (5) is machined with a stepped portion (54) to avoid the edge-rolling die (7).

4. The mold for one-time flanging and rolling according to claim 1, characterized in that: The pressure block (6) has a cover-shaped structure. The inner sidewall of the pressure block (6) is machined to form a pressure block inclined surface (61). The third gas spring (52) is arranged radially along the lower worktable (3). The inclined surface (53) machined at the end of the third gas spring (52) matches the pressure block inclined surface (61).

5. The mold for one-time flanging and rolling according to claim 1, characterized in that: An clearance hole (63) is machined at the center of the pressure block (6) to allow the edge rolling die (7) and the pressure rod (8) to pass through.

6. The mold for one-time flanging and rolling according to claim 1, characterized in that: The lower part of the pressure rod (8) is machined to form a pressure rod inclined surface (81), and the upper part of the inner side of the slider (5) is machined to form a slider inclined surface (51) that matches the pressure rod inclined surface (81).

7. The mold for one-time flanging and rolling according to claim 1, characterized in that: The initial height of the piercing mold (2) is lower than that of the lower worktable (3).

8. The mold for one-time flanging and rolling according to claim 1, characterized in that: The distance between the slider (5) and the lower worktable (3) matches the thickness of the workpiece (10).

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