Square tubular hole flanging die

Abstract

The utility model relates to the technical field of forming die, disclose a square cylinder hole flanging die, including upper die holder and lower die holder, be provided with hole flanging female die on the upper die holder, be provided with the blank holder and hole flanging male die on the lower die holder, the blank holder is relative to hole flanging male die floating design, in the open die state, the upper surface of blank holder is higher than the top of hole flanging male die, to support the square cylinder workpiece of waiting for processing, the upper surface profile of blank holder and the surface shape of square cylinder workpiece are adapted, in the closed die state, the lower surface of blank holder and lower die holder abut, the upper surface of blank holder and hole flanging female die cooperation pinch square cylinder workpiece, the top of hole flanging male die exposes blank holder and realizes hole flanging with hole flanging female die cooperation. The square cylinder hole flanging die has carried out reliable clamping and accurate positioning to square cylinder workpiece, has guaranteed hole flanging forming quality, and then through the mould structure of simplification, control mould volume and cooperate some small -size press use, can realize the hole flanging processing of low -cost, reaches the purpose that the benefit is increased with the cost reduction.

Description

Technical Field

[0001] This utility model relates to the field of molding die technology, and in particular to a square tube hole-turning die. Background Technology

[0002] In response to Figure 1 The feature hole 101 on the cylindrical workpiece 100 is turned to form a shape. Figure 2 In terms of the shaping process, the square cylindrical workpiece 100 has a thin wall thickness and the side wall is not flat, making positioning difficult and the stability during clamping poor, which affects the machining accuracy. In addition, the feature hole 101 is opened on the side wall, which further increases the difficulty of turning the hole. Furthermore, due to the limitations of the shape and size of the cylindrical workpiece 100, the square cylindrical workpiece 100 is prone to interfering with the turning equipment when loading and unloading, which means that the turning equipment must be designed to be large enough, resulting in high production costs, long production cycle time, and extremely inconvenient operation. Utility Model Content

[0003] Based on the above problems, the purpose of this utility model is to provide a square tube turning mold that ensures molding quality, improves production cycle time, and reduces production costs.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A square tube turning die includes an upper die base and a lower die base. The upper die base is provided with a turning die, and the lower die base is provided with a pressure plate and a turning punch. The pressure plate is designed to float relative to the turning punch.

[0006] In the open mold state, the upper surface of the pressure plate is higher than the top of the piercing punch to support the square cylindrical workpiece to be processed. The upper surface profile of the pressure plate is adapted to the surface shape of the square cylindrical workpiece.

[0007] In the mold-closed state, the lower surface of the pressure plate abuts against the lower mold base, and the upper surface of the pressure plate cooperates with the flipping die to clamp the square cylindrical workpiece. The top of the flipping punch protrudes from the pressure plate and cooperates with the flipping die to achieve flipping.

[0008] As an alternative, the pressure plate is provided with an inner guide post that passes through the lower mold base, the lower mold base is provided with an inner guide sleeve that mates with the inner guide post, and a spring is provided between the pressure plate and the lower mold base, the spring giving the pressure plate an upward force.

[0009] As an alternative, an equalizing sleeve is provided on the lower die holder, which is connected to the pressure plate. The equalizing sleeve is used to limit the upper stroke of the pressure plate.

[0010] As an alternative, the piercing punch is provided with a first section and a second section connected in a stepped manner. The first section is located at the top of the piercing punch and is used to position the feature hole to be pierced on the cylindrical workpiece. The cross-sectional dimension of the second section is larger than that of the first section. The second section is used to pass through the feature hole and pierce the edge of the feature hole outward.

[0011] As an alternative, the cylindrical workpiece is placed on the pressure plate in front of the lower mold base, an outer guide sleeve is provided on the rear side of the lower mold base, and an outer guide post that mates with the outer guide sleeve is provided on the upper mold base.

[0012] As an alternative, a lower support plate is provided below the lower mold base, and a lower pad is provided between the lower support plate and the lower mold base.

[0013] As an alternative, the square tube perforation mold is used in conjunction with a cantilever press. The lower support plate is installed on the base of the cantilever press, and the upper mold base is connected to the output end of the cantilever press.

[0014] The beneficial effects of this utility model are:

[0015] This square cylinder turning die is designed with a suitable pressure plate, turning punch, and turning die to fit the shape and size of the square cylinder workpiece. In particular, the floating pressure plate ensures that the square cylinder workpiece is in a stable position during turning and is easy to unload after turning. This allows for reliable clamping and precise positioning of the square cylinder workpiece, ensuring the quality of the turning process. Furthermore, by simplifying the die structure, controlling the die volume, and using it in conjunction with some small presses, low-cost turning processing can be achieved, thus reducing costs and increasing efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a square cylindrical workpiece before flanging and forming, provided in an embodiment of this utility model.

[0017] Figure 2 This is a schematic diagram of the square cylindrical workpiece after flanging and forming according to an embodiment of the present utility model;

[0018] Figure 3 This is a structural schematic diagram of the square tube turning mold provided in this embodiment of the utility model.

[0019] In the attached image:

[0020] 100. Cylinder-shaped workpiece; 101. Feature hole;

[0021] 1. Upper mold base; 2. Lower mold base; 3. Flipping die; 4. Pressure plate; 5. Flipping punch; 5a. First section; 5b. Second section; 6. Inner guide post; 7. Inner guide sleeve; 8. Spring; 9. Equal height sleeve; 10. Outer guide sleeve; 11. Outer guide post; 12. Lower support plate; 13. Lower pad. Detailed Implementation

[0022] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0023] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0025] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] Furthermore, the terms "first" and "second" are merely used to distinguish between different terms in description and do not have any special meaning.

[0027] against Figures 1 to 2 For the forming process, this embodiment provides a square cylinder flanging mold. Please refer to [link / reference]. Figure 3 As shown, the square tube turning die includes an upper die base 1 and a lower die base 2. The upper die base 1 is provided with a turning die 3, and the lower die base 2 is provided with a pressure plate 4 and a turning punch 5. The pressure plate 4 is designed to float relative to the turning punch 5.

[0028] In the open mold state, the upper surface of the pressure plate 4 is higher than the top of the flipping punch 5 to support the square cylindrical workpiece 100 to be processed. The upper surface profile of the pressure plate 4 is adapted to the surface shape of the square cylindrical workpiece 100.

[0029] In the mold-closed state, the lower surface of the pressure plate 4 abuts against the lower mold base 2, and the upper surface of the pressure plate 4 cooperates with the flipping die 3 to clamp the square cylindrical workpiece 100. The top of the flipping punch 5 protrudes from the pressure plate 4 and cooperates with the flipping die 3 to achieve flipping.

[0030] Therefore, a suitable pressure plate 4, a turning punch 5, and a turning die 3 were designed for the shape and size of the cylindrical workpiece 100. In particular, the floating pressure plate 4 ensures that the cylindrical workpiece 100 is in a stable position during turning and is easy to unload after turning. This allows for reliable clamping and precise positioning of the cylindrical workpiece 100, ensuring the quality of the turning process. Furthermore, by simplifying the mold structure, controlling the mold volume, and using it in conjunction with some small presses, low-cost turning processing can be achieved, thus reducing costs and increasing efficiency.

[0031] To achieve the floating function of the pressure plate 4, an inner guide post 6 is provided on the pressure plate 4, which passes through the lower mold base 2. An inner guide sleeve 7 that cooperates with the inner guide post 6 is provided on the lower mold base 2. A spring 8 is provided between the pressure plate 4 and the lower mold base 2, and the spring 8 gives the pressure plate 4 an upward force.

[0032] Thus, the inner guide post 6 and the inner guide sleeve 7 cooperate to guide the floating of the pressure plate 4, and the spring 8 realizes the functions of contact buffering, resetting and forming a clamping force on the opposite cylindrical workpiece 100.

[0033] Furthermore, the lower mold base 2 is provided with an equalizing sleeve 9, which is connected to the pressure plate 4. The equalizing sleeve 9 is used to limit the upper stroke of the pressure plate 4, so as to prevent the pressure plate 4 from being pushed out too much by the spring 8 when the mold is opened, thus ensuring the stability of the mold structure.

[0034] In some embodiments, the flanging punch 5 is provided with a first segment 5a and a second segment 5b connected in a stepped manner. The first segment 5a is located at the top of the flanging punch 5 and is used to position the feature hole 101 to be flanged on the cylindrical workpiece 100. The cross-sectional dimension of the second segment 5b is larger than that of the first segment 5a. The second segment 5b is used to pass through the feature hole 101 and make the edge of the feature hole 101 turn outward.

[0035] Thus, the first segment 5a achieves accurate positioning of the feature hole 101 on the cylindrical workpiece 100 by the flipping punch 5. Then, as the flipping punch 5 gradually extends out of the feature hole 101, the second segment 5b stretches and flips the edge of the feature hole 101 outward to ensure the quality of the flipping.

[0036] Optionally, the cylindrical workpiece 100 is placed on the pressure plate 4 on the front side of the lower mold base 2, and an outer guide sleeve 10 is provided on the rear side of the lower mold base 2. An outer guide post 11 that cooperates with the outer guide sleeve 10 is provided on the upper mold base 1.

[0037] Therefore, considering that the front side of the mold is the loading and unloading position of the cylindrical workpiece 100, in order to avoid interference, the mating structure of the outer guide sleeve 10 and the outer guide post 11 is designed on the rear side of the mold to ensure the movement accuracy of the upper mold base 1 relative to the lower mold base 2, and to ensure the stability and consistency of product quality during the mold opening and closing process.

[0038] Optionally, a lower support plate 12 is provided below the lower mold base 2, and a lower pad 13 is provided between the lower support plate 12 and the lower mold base 2.

[0039] Therefore, the height of the lower mold base 2 is adjusted by the lower pad 13 to adapt to the specific size of the square cylindrical workpiece 100, ensuring smooth loading and unloading of the square cylindrical workpiece 100 without interference.

[0040] In addition, the square tube hole-turning mold can be used with a cantilever press. The lower support plate 12 is installed on the base of the cantilever press, and the upper mold base 1 is connected to the output end of the cantilever press.

[0041] The cantilever press is smaller and more flexible than the traditional press, which can meet the hole-turning requirements here, thereby controlling the overall size and cost of the equipment.

[0042] Detailed operation process:

[0043] 1) In the initial state, the piercing die 3 is completely separated from the pressure plate 4. The pressure plate 4 floats up under the action of the spring 8 and exceeds the piercing punch 5. At this time, the unpierced cylindrical workpiece 100 is placed on the pressure plate 4.

[0044] 2) As the upper mold base 1 moves downward, the piercing die 3 gradually contacts the pressure plate 4 and overcomes the force of the spring 8, causing the pressure plate 4 and the cylindrical workpiece 100 to move downward. The piercing punch 5 gradually protrudes from the pressure plate 4, and the piercing die 3 and the piercing punch 5 begin to cooperate to pierce.

[0045] 3) When the upper mold base 1 finishes moving and enters the mold closing state, the flipping die 3 and the pressure plate 4 are firmly locked together, and the molding process ends;

[0046] 4) As the upper mold base 1 is lifted, the piercing die 3 gradually rises until it is completely separated from the pressure plate 4. The pressure plate 4 moves upward under the action of the spring 8 to lift the square cylindrical workpiece 100 and separate it from the piercing punch 5, making it convenient to take out the formed square cylindrical workpiece 100.

[0047] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A square tube turning die, comprising an upper die base (1) and a lower die base (2), characterized in that, The upper mold base (1) is provided with a piercing die (3), and the lower mold base (2) is provided with a pressure plate (4) and a piercing punch (5). The pressure plate (4) is designed to float relative to the piercing punch (5). In the open mold state, the upper surface of the pressure plate (4) is higher than the top of the piercing punch (5) to support the cylindrical workpiece (100) to be processed. The upper surface profile of the pressure plate (4) is adapted to the surface shape of the cylindrical workpiece (100). In the mold-closed state, the lower surface of the pressure plate (4) abuts against the lower mold base (2), the upper surface of the pressure plate (4) cooperates with the piercing die (3) to clamp the cylindrical workpiece (100), and the top end of the piercing punch (5) protrudes from the pressure plate (4) and cooperates with the piercing die (3) to achieve piercing.

2. The square tube turning mold according to claim 1, characterized in that, The pressure plate (4) is provided with an inner guide post (6) that passes through the lower mold base (2). The lower mold base (2) is provided with an inner guide sleeve (7) that cooperates with the inner guide post (6). A spring (8) is provided between the pressure plate (4) and the lower mold base (2). The spring (8) gives the pressure plate (4) an upward force.

3. The square tube turning mold according to claim 2, characterized in that, The lower mold base (2) is provided with an equal height sleeve (9), which is connected to the pressure plate (4). The equal height sleeve (9) is used to limit the upper stroke of the pressure plate (4).

4. The square tube turning mold according to claim 1, characterized in that, The piercing punch (5) is provided with a first section (5a) and a second section (5b) connected in a stepped manner. The first section (5a) is located at the top of the piercing punch (5) and is used to position the feature hole (101) to be pierced on the cylindrical workpiece (100). The cross-sectional dimension of the second section (5b) is larger than that of the first section (5a). The second section (5b) is used to pass through the feature hole (101) and make the edge of the feature hole (101) turn outward.

5. The square tube turning mold according to claim 1, characterized in that, The cylindrical workpiece (100) is placed on the pressure plate (4) on the front side of the lower mold base (2). An outer guide sleeve (10) is provided on the rear side of the lower mold base (2), and an outer guide post (11) that cooperates with the outer guide sleeve (10) is provided on the upper mold base (1).

6. The square tube turning mold according to claim 1, characterized in that, A lower support plate (12) is provided below the lower mold base (2), and a lower pad (13) is provided between the lower support plate (12) and the lower mold base (2).

7. The square tube turning mold according to claim 6, characterized in that, The square tube hole-turning mold is used in conjunction with the cantilever press. The lower support plate (12) is installed on the base of the cantilever press, and the upper mold base (1) is connected to the output end of the cantilever press.

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