A plate bending die

Abstract

The present application relates to a kind of plate bending die, by setting up the clamping seat with through slot on lower die plate, and setting up the bending block matched with through slot, make this bending block and through slot movable connection, when pressing mould, bending block will the edge of workpiece be bent, by making bending block and through slot movable connection, bending block can have certain rotation allowance, reduce the bending speed of edge in bending process, avoid bending too fast and cause bending part to be damaged.In addition, by setting up the upper die slider is set to include right-angle trapezoidal block, boss and cylinder, make slider more smooth and stable in the process of sliding along the inclined surface opening of upper die plate, inclined surface design has certain guiding effect, avoid deviating from preset position and cause workpiece to be damaged.

Description

Technical Field

[0001] This invention relates to the field of mold technology, and in particular to a sheet metal bending mold. Background Technology

[0002] Current sheet metal edge designs commonly include bends to simplify assembly and splicing processes. For small-batch production, manual sheet metal fabrication is widely used due to its flexibility. However, facing the high demands of large-scale production and assembly line operations, more efficient processing methods become essential, with mold making being a mainstream approach.

[0003] During mold processing, due to the inherent strength differences of sheet metal materials, defects such as cracks are prone to occur in the bent parts during forming, and this problem is particularly prominent. The formation of cracks not only affects the appearance quality of the sheet metal, but may also weaken its structural strength, leading to a decline in overall performance.

[0004] In summary, how to effectively reduce the occurrence of bending defects in mold processing has become a pressing technical challenge that needs to be overcome. Summary of the Invention

[0005] The purpose of this invention is to overcome the defects of the prior art by providing a sheet metal bending die to solve or partially solve the problem that defects are easily generated in the bending part.

[0006] The objective of this invention can be achieved through the following technical solutions:

[0007] This invention provides a sheet metal bending die, comprising:

[0008] Upper mold base;

[0009] The upper template is connected to the upper mold base, and the upper template has a beveled opening on its edge;

[0010] The upper mold slider matches the inclined opening and is movably connected to the upper template.

[0011] Lower ejector plate;

[0012] The lower clamping plate is connected to the lower release plate, and the lower clamping plate is provided with a groove;

[0013] The lower template matches the groove and is connected to the lower clamping plate;

[0014] A card holder is connected to the lower template, and a through slot is provided on the card holder;

[0015] The bending block matches the through slot and is movably connected to the card holder;

[0016] The lower mold base is connected to the lower clamping plate.

[0017] As a preferred technical solution, the following are also included:

[0018] The outer guide post is connected to the upper mold base;

[0019] The outer guide sleeve matches the outer guide post and is connected to the lower mold base.

[0020] As a preferred technical solution, the following are also included:

[0021] The inner guide post is connected to the lower clamping plate;

[0022] The inner guide sleeve matches the inner guide post and is connected to the lower release plate.

[0023] As a preferred technical solution, the following are also included:

[0024] The upper pad is connected to the upper mold base;

[0025] The upper support plate is connected to the upper pad foot;

[0026] The lower pad is connected to the lower mold base;

[0027] The lower support plate is connected to the lower pad foot.

[0028] As a preferred technical solution, the following are also included:

[0029] The top plate is connected to the lower mold base.

[0030] As a preferred technical solution, the upper mold slider includes:

[0031] The trapezoidal block has a right-angled trapezoidal cross-section;

[0032] A protrusion is connected to the inclined side of the trapezoidal block, and the side of the protrusion forms an acute angle with the inclined side of the trapezoidal block;

[0033] The column is connected to the protrusion.

[0034] As a preferred technical solution, the acute angle is less than 80°.

[0035] As a preferred technical solution, the card holder includes:

[0036] The first connecting plate is connected to the lower template.

[0037] The second connecting plate is connected to the first connecting plate. The angle between the first connecting plate and the second connecting plate is an obtuse angle. A cylindrical through groove is opened at the connection part between the first connecting plate and the second connecting plate.

[0038] As a preferred technical solution, the bending block includes:

[0039] The shaft body matches the through slot;

[0040] The third connecting plate is connected to the shaft.

[0041] The fourth connecting plate is connected to the shaft, and the third connecting plate and the fourth connecting plate form an acute angle.

[0042] As a preferred technical solution, the following are also included:

[0043] The upper mold stop is connected to the upper mold base.

[0044] Compared with the prior art, the present invention has at least one of the following beneficial effects:

[0045] (1) Reduce the probability of damage to the bending part: The present invention sets a card seat with a through groove on the lower template and sets a bending block that matches the through groove, so that the bending block is movably connected to the through groove. During the pressing process, the bending block bends the edge of the workpiece. By making the bending block movably connected to the through groove, the bending block can have a certain rotational margin, reducing the bending speed of the edge during the bending process and avoiding damage to the bending part due to excessive bending.

[0046] (2) Improve the smoothness of the molding process: The present invention sets the upper mold slider to include a right-angled trapezoidal block, a protrusion and a column, so that the slider slides more smoothly and stably along the inclined opening of the upper mold plate. The inclined design has a certain guiding effect to avoid deviating from the preset position and causing damage to the workpiece. Attached Figure Description

[0047] Figure 1 This is a schematic cross-sectional view of the plate bending die in the embodiment;

[0048] Figure 2 This is a top view of the sheet metal bending die in the embodiment;

[0049] Figure 3 This is a schematic diagram of the upper template and the upper mold slider in the embodiment;

[0050] Figure 4 This is a schematic diagram of the lower clamping plate in the embodiment;

[0051] Figure 5 This is a schematic diagram of the template shown in the embodiment;

[0052] Figure 6 This is a schematic diagram of the card holder in the embodiment;

[0053] Figure 7 This is a schematic diagram of the bending block in the embodiment.

[0054] Among them, 1. Upper mold base, 2. Upper template, 3. Upper mold slider, 4. Lower ejector plate, 5. Lower clamping plate, 6. Lower template, 7. Card seat, 8. Bending block, 9. Lower mold base, 10. Outer guide post, 11. Outer guide sleeve, 12. Inner guide post, 13. Inner guide sleeve, 14. Upper pad, 15. Upper support plate, 16. Lower pad, 17. Lower pad plate, 18. Top plate, 19. Trapezoidal block, 20. Protrusion, 21. Column, 22. First connecting plate, 23. Second connecting plate, 24. Shaft, 25. Third connecting plate, 26. Fourth connecting plate, 27. Upper mold stop block. Detailed Implementation

[0055] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0056] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use. They are only for the convenience of describing this invention and simplifying the description, and do not 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 invention. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0057] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0058] Regarding the problems existing in the aforementioned prior art, see [link to relevant documentation]. Figure 1 and Figure 2 This embodiment provides a sheet metal bending die, which mainly includes an upper die part and a lower die part.

[0059] The upper mold part includes:

[0060] Upper mold base 1 is mainly used for guiding the upper and lower molds of the outer guide pillar 10 and for clamping and bearing force.

[0061] The outer guide post 10 is connected to the upper mold base 1;

[0062] The upper template 2 is connected to the upper mold base 1. The upper template 2 has a beveled opening on its edge. Specifically, the bevel direction is from the outside of the plate to the inside of the plate, and the area of ​​the upper surface of the plate is larger than that of the lower surface.

[0063] The upper mold slider 3 matches the inclined opening and is movably connected to the upper mold plate 2.

[0064] For details, see Figure 3 The upper mold slider 3 includes:

[0065] Trapezoidal block 19 has a right-angled trapezoidal cross-section;

[0066] The protrusion 20 is connected to the inclined side of the trapezoidal block 19. The side of the protrusion 20 forms an acute angle with the inclined side of the trapezoidal block 19. Preferably, the angle of the acute angle is less than 80°. The protrusion 20 can engage with the inclined opening on the upper template 2, so that the protrusion 20 can only move along the inclined direction of the opening.

[0067] The column 21 is connected to the protrusion 20.

[0068] For details, see Figure 6 Where (a), (b), and (c) are the perspective view, side view, and top view of the card holder 7, respectively. The card holder 7 is arranged opposite to each other on both sides of the lower template 6, including:

[0069] The first connecting plate 22 is connected to the lower template 6 at its bottom;

[0070] The second connecting plate 23 faces the inside of the mold and is connected to the first connecting plate 22. The included angle between the first connecting plate 22 and the second connecting plate 23 is an obtuse angle. A cylindrical through groove is opened at the connection part between the first connecting plate 22 and the second connecting plate 23.

[0071] For details, see Figure 7 This is a schematic diagram of bending block 8, which includes:

[0072] Shaft 24 is matched with through groove. After the shaft is installed on through groove, it has a certain margin to rotate along through groove.

[0073] The third connecting plate 25 is connected to the shaft 24, and the upper end of the third connecting plate 25 is smoothed.

[0074] The fourth connecting plate 26 is connected to the shaft 24, and the third connecting plate 25 and the fourth connecting plate 26 form an acute angle.

[0075] Preferably, the upper mold portion may further include:

[0076] The upper pad 14 is connected to the upper mold base 1 and is used to increase the height of the mold so that the mold closing height is within the range of the punch press stroke.

[0077] The upper support plate 15 is connected to the upper pad 14 and is used to clamp the mold to the press worktable.

[0078] Preferably, the upper mold portion may further include:

[0079] The upper mold stop 27 is connected to the upper mold base 1. When the mold is closed, the upper mold stop 27 can block the sides of the upper mold plate 2 and the lower support plate 5 to ensure the accuracy of mold closing.

[0080] The lower mold section includes:

[0081] Lower stripper plate 4 is mainly used for material stripping;

[0082] Lower clamping plate 5 is connected to lower release plate 4, see [link / reference] Figure 4 (a) is a top view and (b) is a front view. The lower clamping plate 5 has grooves on its opposite sides. The lower clamping plate 5 is mainly used for clamping the punch and guide post.

[0083] The lower template 6 matches the groove and is connected to the lower clamping plate 5, see [reference]. Figure 6 It includes four lower templates 6. (a)(c)(e)(g) are top views of the four lower templates 6 respectively, and (b)(d)(e)(h) are the corresponding side views respectively. Among them, (a)(c) two lower templates 6 are set in the groove on the upper side of the lower clamping plate 5, and (e)(g) two lower templates 6 are set in the groove on the lower side of the lower clamping plate 5.

[0084] Card holder 7 is connected to lower template 6, and card holder 7 has a through slot;

[0085] The bending block 8 matches the through slot and is movably connected to the card holder 7;

[0086] The lower mold base 9 is connected to the lower clamping plate 5 and is mainly used for guiding the upper and lower molds of the outer guide pillar and for clamping and bearing force.

[0087] The outer guide sleeve 11 matches the outer guide post 10 and is connected to the lower mold base 9;

[0088] Inner guide post 12 is connected to lower clamping plate 5;

[0089] The inner guide sleeve 13 matches the inner guide post 12 and is connected to the lower stripper plate 4.

[0090] Preferably, the lower mold portion may further include:

[0091] Lower pad 16 is connected to lower mold base 9;

[0092] The lower support plate 17 is connected to the lower pad 16.

[0093] Preferably, the lower mold portion may further include:

[0094] The top plate 18 is connected to the lower mold base 9.

[0095] The working principle of this mold is as follows: First, according to... Figure 1 and Figure 2 In this manner, each panel and component is installed in place, and the workpiece to be bent (such as...) is then placed... Figure 2 (As shown by the dashed line) The upper and lower mold parts are placed between the mold and the lower mold for pressing. During the pressing process, the upper mold slider 3 slides along the inclined opening of the upper mold plate 2. Through the limiting of the protrusion 20, it cooperates with the inner guide post 12 and the outer guide post 10 to ensure the accuracy of the pressing. The bending block 8 bends the edge of the workpiece. By setting a matching clamping seat 7, the pressure on the workpiece during the bending process will drive the bending block 8 to rotate until the bending block 8 abuts against the clamping seat 7. This alleviates the impact of excessive pressing speed on the quality of the bending part to a certain extent. By smoothing the upper end of the third connecting plate 25, the small contact area is avoided from applying excessive force to the bending part of the workpiece, thus ensuring the bending effect.

[0096] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and these modifications or substitutions should all be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A sheet metal bending die, characterized in that, include: Upper mold base (1); The upper template (2) is connected to the upper mold base (1), and the upper template (2) has a beveled opening on its edge; The upper mold slider (3) matches the inclined opening and is movably connected to the upper template (2); Lower ejector plate (4); The lower clamping plate (5) is connected to the lower release plate (4), and the lower clamping plate (5) is provided with a groove; The lower template (6) matches the groove and is connected to the lower clamping plate (5); Card holder (7) is connected to the lower template (6), and the card holder (7) has a through groove; The bending block (8) matches the through groove and is movably connected to the card holder (7); The lower mold base (9) is connected to the lower clamping plate (5).

2. The sheet metal bending die according to claim 1, characterized in that, Also includes: The outer guide post (10) is connected to the upper mold base (1); The outer guide sleeve (11) is matched with the outer guide post (10) and connected to the lower mold base (9).

3. The sheet metal bending die according to claim 1, characterized in that, Also includes: The inner guide post (12) is connected to the lower clamping plate (5); The inner guide sleeve (13) matches the inner guide post (12) and is connected to the lower release plate (4).

4. The sheet metal bending die according to claim 1, characterized in that, Also includes: Upper pad (14) is connected to the upper mold base (1); The upper support plate (15) is connected to the upper pad (14); The lower pad (16) is connected to the lower mold base (9); The lower support plate (17) is connected to the lower pad (16).

5. A sheet metal bending die according to claim 1, characterized in that, Also includes: The top plate (18) is connected to the lower mold base (9).

6. A sheet metal bending die according to claim 1, characterized in that, The upper mold slider (3) includes: Trapezoidal block (19), with a cross-section in the shape of a right trapezoid; A protrusion (20) is connected to the inclined side of the trapezoidal block (19), and the side of the protrusion (20) forms an acute angle with the inclined side of the trapezoidal block (19). The column (21) is connected to the protrusion (20).

7. A sheet metal bending die according to claim 6, characterized in that, The acute angle is less than 80°.

8. A sheet metal bending die according to claim 1, characterized in that, The card holder (7) includes: The first connecting plate (22) is connected to the lower template (6); The second connecting plate (23) is connected to the first connecting plate (22). The included angle between the first connecting plate (22) and the second connecting plate (23) is an obtuse angle. A cylindrical through groove is opened at the connection part between the first connecting plate (22) and the second connecting plate (23).

9. A sheet metal bending die according to claim 8, characterized in that, The bending block (8) includes: Shaft (24) that matches the through slot; The third connecting plate (25) is connected to the shaft (24); The fourth connecting plate (26) is connected to the shaft (24), and the third connecting plate (25) and the fourth connecting plate (26) form an acute angle.

10. A sheet metal bending die according to claim 1, characterized in that, Also includes: The upper mold stop (27) is connected to the upper mold base (1).

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