Plate bending die with folded edge

Abstract

The utility model relates to a plate bending die with folding edges, which is used for folding a plate with folding edges on two sides, the bent plate comprises a bending bulge and a bending groove, the die comprises an upper die plate punch, a lower die plate and a lower support plate, and the lower die plate comprises a fixing piece, a first folding plate and a second folding plate; a V-shaped pressing edge matched with the bending groove is arranged on the side, close to the lower die plate, of the upper die plate punch. The lower supporting plate is located at one end of the fixing part, the fixing part and the lower supporting plate are provided with containing grooves matched with the bent protrusions of the plate, a telescopic jacking assembly is arranged below the containing grooves, the lower supporting plate is provided with clamping grooves matched with the turnover plates, the clamping grooves are perpendicular to the containing grooves, and the first turnover plate and the second turnover plate are symmetrically distributed in the clamping grooves. The upper surfaces of the fixing piece, the first folding plate and the second folding plate are located on the same plane. Compared with the prior art, the plate stamping and bending device has the advantages of wide plate stamping and bending application range, high accuracy, high production efficiency and the like.

Description

Technical Field

[0001] This utility model relates to the field of stamping die devices, and in particular to a sheet metal bending die with a folded edge. Background Technology

[0002] Sheet metal bending dies are used to bend sheet metal. The production and processing of sheet metal hardware often involves folding sheet metal to accommodate different usage environments. During the folding operation, the sheet metal is fixed using a sheet metal bending die, and then a stamping machine is used to press and fold the sheet metal.

[0003] However, most current stamping and bending dies are designed for bending flat sheet metal, without considering the impact on the folded edges when performing secondary bending. For stamping and bending sheet metal with folded edges, existing stamping dies typically have a lower die designed to match the shape of the finished sheet metal, with a groove at the corresponding position of the folded edge to avoid affecting its shape.

[0004] However, the above-mentioned stamping and bending structure with the folded edge facing downwards is suitable for bending at small angles or bending of sheets with a folded edge on one side. For products with large angles or sheets with folded edges on multiple sides, it is inconvenient to remove the products after bending, which affects the production rhythm and reduces the production efficiency of sheet products. Utility Model Content

[0005] The purpose of this utility model is to overcome the shortcomings of the existing technology, which makes it inconvenient to remove products after bending large-angle bending or multi-sided folded plates, affecting the production rhythm and thus reducing the production efficiency of plate products. This invention provides a plate bending mold with folded edges.

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

[0007] A sheet metal bending die with folded edges is used to fold sheet metal with folded edges on both sides. The folded sheet metal includes bending protrusions and bending grooves. The die includes an upper template punch, a lower template and a lower support plate. The lower template includes a fixing member, a first folding plate and a second folding plate.

[0008] The upper template punch has a V-shaped pressing edge that matches the bending groove on the side near the lower template.

[0009] The lower supporting plate is located at one end of the fixing part, the fixing part and the lower supporting plate are provided with accommodating grooves matched with the bending protrusions of the plate, the accommodating grooves are provided below with telescopic jacking assemblies, the lower supporting plate is provided with clamping grooves matched with the bending plates, the clamping grooves are perpendicular to the accommodating grooves, the first bending plate and the second bending plate are symmetrically distributed in the clamping grooves, and the upper surfaces of the fixing part, the first bending plate and the second bending plate are located on the same plane.

[0010] Preferably, the fixing part comprises first fixing columns and second fixing columns, and the first fixing columns and the second fixing columns are symmetrically distributed on both sides of the accommodating grooves.

[0011] Preferably, opposite sides of the first fixing columns and the second fixing columns are provided with bending portions, and the bending portions are provided with rolling rods, and the rolling rods are located at bending positions of the bending portions.

[0012] Preferably, the supporting portion comprises a straight section, a circular groove section and an inclined section connected in sequence.

[0013] The circular groove section is matched with the shape of the rolling rod, the rolling rod is rotatably fixed in the circular groove section, and the rolling rod is tangent to the straight section and the inclined section respectively.

[0014] Preferably, an inverted T-shaped gap is reserved between the first fixing columns and the second fixing columns, and the jacking assemblies are telescopically fixed in the T-shaped gap.

[0015] Preferably, the jacking assembly comprises a top block and a return spring, the top block is a T-shaped structure matched with the inverted T-shaped gap, one end of the top block is located in the accommodating groove, and the return spring is connected to the other end of the top block away from the accommodating groove.

[0016] Preferably, the first bending plate and the second bending plate are provided with limiting plates on sides away from the fixing part, and one end of the plate to be bent is abutted on one side of the limiting plate.

[0017] Preferably, the die further comprises an upper backing plate, the upper backing plate is a plate-shaped structure, the height of the upper backing plate is greater than the thickness, the upper die plate punch is fixed on the upper backing plate, and the upper backing plate is provided with a plurality of weight reduction grooves.

[0018] Preferably, the side edge of the bent plate is provided with an inward protrusion, the die further comprises a limiting column, the limiting column is fixed on the lower supporting plate, the limiting column is located at the lower end of the accommodating groove, and the limiting column is matched with the shape of the protrusion of the side edge of the plate.

[0019] Preferably, the V-shaped edge pressing part comprises a first inclined section, a circular arc section and a second inclined section connected in sequence, and the included angle of the first inclined section and the second inclined section is equal to the included angle of the bending groove.

[0020] Compared with the prior art, the die has the following advantages:

[0021] (1) The scheme places the plate with the folded edge on the stamping position on the lower die plate, drives the upper die stamp to move downward, abuts against the position to be bent of the plate, then moves the corresponding bending protruding part of the plate into the accommodating groove, and rotates the first and second turning plates, and the two sides are combined upward, the upper die stamp moves to the preset position, the bending of the plate is completed, then the product is ejected from the accommodating groove by the lifting assembly, the upper die stamp moves upward and is separated from the bending groove, and the bending and demolding of the plate are completed.

[0022] The plate is pressed into the accommodating groove by the upper die stamp, the bending protrusion and the bending groove of the product are bent and formed, and the side of the plate with the folded edge is located above, so that the plate does not contact the die during stamping and is not deformed, the quality of the product after bending is ensured, the first and second turning plates at one end of the fixing part can assist in supporting the product after bending, and the bending quality of the plate with a large area can be ensured. And for the plate with a large angle bending and a folded edge on the opposite side, the plate is not affected by the die, the stamping and bending structure has a wider application range and is more practical.

[0023] (2) In the scheme, the fixing part is provided with a first fixing column and a second fixing column, the accommodating groove for plate bending protrusion forming is formed by the symmetrically distributed bending parts on the first and second fixing columns, considering that the product will move from the flat section to the inclined section during bending, the rolling rods are arranged at the bending parts of the flat section and the inclined section, because the plate will bear a large force when being pressed downward, compared with the arc transition, the rolling rods can play a more smooth guiding role, and can avoid scratching or deforming the plate at the bending part, so that the quality of the product after plate bending is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 A structure schematic view when a plate is stamped is provided for the utility model;

[0025] Figure 2 A structure schematic view after the upper die stamp is removed after plate stamping is completed;

[0026] Figure 3 A structure schematic view when a turning plate is leveled is provided for the utility model;

[0027] Figure 4 A structure schematic view when a turning plate is rotated and raised is provided for the utility model;

[0028] Figure 5 A structure schematic view of an upper backing plate is provided for the utility model;

[0029] Figure 6 A structure schematic view of a lower backing plate is provided for the utility model;

[0030] Fig. 1, upper die plate punch, 2, lower support plate, 3, fixing piece, 4, first folding plate, 5, second folding plate, 6, top block, 7, reset spring, 8, upper backing plate, 9, limiting column, 10, plate, 101, bending protrusion, 102, bending groove; 11, V-shaped edge, 111, first inclined section, 112, circular arc section, 113, second inclined section; 21, clamping groove, 31, accommodating groove, 32, first fixing column, 33, second fixing column, 34, bending part, 35, rolling rod, 341, straight section, 342, circular groove section, 343, inclined section. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0033] It should be noted that: similar reference numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0034] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly placed when the product of the present application is used, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0035] It should be noted that the terms "first", "second" are used only for descriptive purpose, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can be explicitly or implicitly included one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0036] In addition, the terms "horizontal", "vertical" and other terms do not mean that the components must be absolutely horizontal or vertical, but can be slightly inclined. As "horizontal" only 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 inclined.

[0037] Embodiment 1

[0038] As Figures 1 to 6 shown, the present embodiment provides a plate bending die with a folded edge, which is used for folding a plate with folded edges on both sides. The bent plate includes a bending protrusion and a bending groove. The die includes an upper die punch 1, a lower die plate, and a lower backing plate 2. The lower die plate includes a fixing member 3, a first folding plate 4, and a second folding plate 5.

[0039] The side of the upper die punch 1 close to the lower die plate is provided with a V-shaped pressing edge 11 matched with the bending groove;

[0040] The lower backing plate 2 is located at one end of the fixing member 3. The fixing member 3 and the lower backing plate 2 are provided with a receiving groove 31 matched with the plate bending protrusion. The receiving groove 31 is below a telescopic lifting assembly. The lower backing plate 2 is provided with a clamping groove 21 matched with the folding plate 4. The clamping groove 21 is perpendicular to the receiving groove 31. The first folding plate 4 and the second folding plate 5 are symmetrically distributed in the clamping groove 21. The upper surfaces of the fixing member 3, the first folding plate 4, and the second folding plate 5 are located in the same plane.

[0041] Working principle: Place the plate with folded edges on the stamping position on the lower die plate. Drive the upper die punch 1 to move downward and abut against the position to be bent of the plate. Then, the corresponding bending protrusion part of the plate is moved into the receiving groove 31, and the first folding plate 4 and the second folding plate 5 are rotated to be combined upward. The upper die punch 1 moves to the preset position to complete the bending of the plate. Then, the lifting assembly lifts the product out of the receiving groove 31. The upper die punch 1 moves upward to separate from the bending groove, and the bending and demolding of the plate are completed.

[0042] The plate is pressed into the accommodating groove 31 by the upper die template punch 1, the bending protrusion and the bending groove of the product are bent and formed, and the side of the plate with the folded edge is located above, so that the plate does not contact the die template during stamping and is not deformed, the quality of the product after bending is ensured, the first folding plate 4 and the second folding plate 5 at one end of the fixing part can assist in supporting the product after bending, and the bending quality of the plate with a large area can be ensured. And for the plate with a large angle bending and a folded edge on the opposite side, the plate is not affected by the die template, the stamping and bending structure has a wider application range and is more practical.

[0043] The preferred embodiment is as shown in the drawings, the fixing part 3 includes a first fixing column 32 and a second fixing column 33, and the first fixing column 32 and the second fixing column 33 are symmetrically distributed on both sides of the accommodating groove 31. Figure 1

[0044] The side opposite to the first fixing column 32 and the second fixing column 33 is provided with a bending part 34, and the bending part 34 is provided with a rolling rod 35, and the rolling rod 35 is located at the bending part 34.

[0045] Further, the support part 34 includes a straight section 341, a circular groove section 342 and an inclined section 343 connected in sequence.

[0046] The shape of the circular groove section 342 matches the rolling rod 35, the rolling rod 35 is rotatably fixed in the circular groove section 342, and the rolling rod 35 is tangent to the straight section 341 and the inclined section 343.

[0047] In the scheme, the fixing part is provided with the first fixing column 32 and the second fixing column 33, the accommodating groove 31 for plate bending protrusion forming is formed by the symmetrically distributed bending parts 34 on the first fixing column 32 and the second fixing column 33, considering that the product will move from the straight section 341 of the bending part 34 to the inclined section 343 during bending, the rolling rod 35 is arranged at the bending part of the straight section 341 and the inclined section 343, because the plate will bear a large force when being pressed downward, compared with the arc transition, the rolling rod 35 can play a more smooth guiding role, and can avoid scratching or deformation of the plate at the bending part, thereby ensuring the quality of the product after plate bending.

[0048] Specifically, an inverted T-shaped gap is reserved between the first fixing column 32 and the second fixing column 33, and the jacking assembly is telescopically fixed in the T-shaped gap.

[0049] Further, the jacking assembly includes a top block 6 and a return spring 7, the top block 6 is a T-shaped structure matched with the inverted T-shaped gap, one end of the top block 6 is located in the accommodating groove 31, and the return spring 7 is connected to the end of the top block 6 away from the accommodating groove 31.

[0050] ​When the plate is pushed into the accommodating groove 31, the top block 6 in the accommodating groove 31 is contacted, the reset spring 7 is extruded and shrunk, the forming of the product bending protrusion is completed, then the extrusion of the upper die plate punch 1 is removed, the top block 6 is bounced up under the action of the reset spring 7, the top block 6 of the T-shaped structure is limited through the inverted T-shaped gap matched in shape, the formed product is pushed out of the accommodating groove 31, the demolding is convenient, and the bending efficiency of the plate is improved.

[0051] The first folding plate 4 and the second folding plate 5 are provided with limit plates on the sides away from the fixing part 3.

[0052] The limit structure is arranged on the first folding plate 4 and the second folding plate 5 on the lower supporting plate 2 at one end of the fixing part 3, the one end of the plate is positioned, the structure is simple, and the positioning effect is obvious.

[0053] Optionally, as shown in Figure 5 The upper die plate punch 1 is fixed on the upper backing plate 8, and the upper backing plate 8 is provided with a plurality of lightening grooves 81.

[0054] The height of the upper backing plate 8 is increased, the upper die plate punch 1 is fixed on the upper backing plate 8, the part of the plate after bending can be prevented from being in contact with the stamping structure, the quality of the bending product is not affected, and compared with increasing the length of the upper die plate punch, the adaptability of the structure is stronger, and the structure is more stable.

[0055] The side edge of the bent plate is provided with an inward protrusion, the mold further comprises a limiting column 9, the limiting column 9 is fixed on the lower supporting plate 2, the limiting column 9 is located at the lower end of the accommodating groove 31, and the shape of the limiting column 9 is matched with the protrusion of the side edge of the plate.

[0056] The limiting column 9 is arranged on the lower supporting plate 2, the bending plate can be limited in the direction of stamping, and the forming of the protrusion of the side edge of the product can be completed, and the structure is simple.

[0057] Specifically, the V-shaped pressing edge 11 comprises a first inclined section 111, a circular arc section 112 and a second inclined section 113 connected in sequence, and the included angle of the first inclined section 111 and the second inclined section 113 is equal to the included angle of the bending groove.

[0058] The preferred embodiments of the present application are described in detail above. It should be understood that those skilled in the art can make many modifications and changes without creative work according to the concept of the present application. Therefore, any technical solutions obtained by logical analysis, reasoning or limited experiments on the basis of the prior art according to the concept of the present application shall be within the protection scope defined by the claims.

Claims

1. A plate bending die with a hem for folding a plate with a hem on both sides, the folded plate including a bending protrusion and a bending groove, characterized in that, The mold comprises an upper die punch (1), a lower die plate and a lower backing plate (2), the lower die plate comprises a fixing part (3), a first folding plate (4) and a second folding plate (5); The upper die punch (1) is provided with a V-shaped pressing edge (11) matched with the bending groove on the side close to the lower die plate; The lower backing plate (2) is located at one end of the fixing part (3), the fixing part (3) and the lower backing plate (2) are provided with accommodating grooves (31) matched with the bending protrusions of the plate, the accommodating grooves (31) are provided below with a telescopic jacking assembly, the lower backing plate (2) is provided with clamping grooves (21) matched with the first folding plate (4), the clamping grooves (21) are perpendicular to the accommodating grooves (31), the first folding plate (4) and the second folding plate (5) are symmetrically distributed in the clamping grooves (21), and the upper surfaces of the fixing part (3), the first folding plate (4) and the second folding plate (5) are located in the same plane.

2. The plate bending die with a folding edge according to claim 1, characterized in that, The fixing part (3) comprises a first fixing column (32) and a second fixing column (33), and the first fixing column (32) and the second fixing column (33) are symmetrically distributed on the two sides of the accommodating groove (31).

3. A plate bending die with a folding edge according to claim 2, characterized in that, The opposite sides of the first fixing column (32) and the second fixing column (33) are each provided with a bending part (34), the bending part (34) is provided with a rolling rod (35), and the rolling rod (35) is located at the bending part (34).

4. The sheet bending die with a bent edge according to claim 3, characterized in that, The bending part (34) comprises a straight section (341), a circular groove section (342) and an inclined section (343) connected in sequence. The shape of the circular groove section (342) is matched with that of the rolling rod (35), the rolling rod (35) is rotatably fixed in the circular groove section (342), and the rolling rod (35) is tangent to the straight section (341) and the inclined section (343) respectively.

5. The sheet bending die with a bent edge according to claim 2, wherein A reversed T-shaped gap is reserved between the first fixing column (32) and the second fixing column (33), and the jacking assembly is telescopically fixed in the T-shaped gap.

6. A plate bending die with a folding edge according to claim 5, wherein The jacking assembly comprises a top block (6) and a return spring (7), the top block (6) is a T-shaped structure matched with the reversed T-shaped gap, one end of the top block (6) is located in the accommodating groove (31), and the return spring (7) is connected to the end of the top block (6) away from the accommodating groove (31).

7. The sheet bending die with a bent edge according to claim 1, wherein The side of the first folding plate (4) and the second folding plate (5) away from the fixing part (3) is provided with a limiting plate, and one end of the plate to be bent abuts against one side of the limiting plate.

8. The sheet bending die with a bent edge according to claim 1, wherein The mold further comprises an upper backing plate (8), the upper backing plate (8) is a plate structure, the height of the upper backing plate (8) is greater than the thickness, the upper die punch (1) is fixed on the upper backing plate (8), and the upper backing plate (8) is provided with a plurality of weight reduction grooves (81).

9. The sheet bending die with a bent edge according to claim 1, wherein The side edge of the bent plate is provided with an inward protrusion, the mold further comprises a limiting column (9), the limiting column (9) is fixed on the lower backing plate (2), the limiting column (9) is located at the lower end of the accommodating groove (31), and the shape of the limiting column (9) is matched with that of the protrusion of the side edge of the plate.

10. The sheet bending die with a bent edge according to claim 1, wherein The V-shaped blank holder (11) comprises a first inclined section (111), a circular arc section (112) and a second inclined section (113) connected in sequence, and the included angle of the first inclined section (111) and the second inclined section (113) is equal to the included angle of the bending groove.

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