Traceless one-time negative angle forming die

Abstract

The utility model belongs to the technical field of negative angle forming dies, and particularly relates to a traceless one-time negative angle forming die which comprises a lower die and an upper die installed above the lower die in a lifting mode, a machining area for pressing and beveling a workpiece is arranged at the bottom of the upper die, and a lifting pressing piece is installed in the middle of the machining area in the longitudinal direction. The pressing piece is used for pressing and fixing a workpiece, corner folding columns capable of rotating relatively are transversely and symmetrically installed on the two sides of the pressing piece, and a corner folding area for folding the edge of the workpiece is formed on each corner folding column in the axial direction. In the process that the workpiece is pressed on the lower die through the pressing piece, the two sides of the workpiece are subjected to rotary corner folding through the rotatable corner folding column, and negative angle forming can be conducted on the two sides of the workpiece at a time through equipment.

Description

Technical Field

[0001] The utility model belongs to the technical field of negative angle forming dies, and in particular relates to a traceless one-step negative angle forming die. Background Art

[0002] The negative angle forming mold includes an upper mold, a lower mold, a lower mold forming block, an upper mold forming block, and a negative angle forming mechanism. The negative angle of the mold refers to chamfering the workpiece on the mold through a negative angle forming mechanism to prevent defects such as burrs and cracks from appearing on the edge of the product.

[0003] The existing forming mold is unable to perform one-time negative angle forming on the workpiece. The forming mold is required to process the sheet workpiece into a U-shaped structure, and then bend the vertical frames on both sides of the U-shaped metal sheet inward. This requires multiple steps, which may easily lead to inconsistent inward bending angles of the vertical frames on both sides. In addition, multiple bending steps may easily scratch the surface of the metal sheet, resulting in larger defective products. Utility Model Content

[0004] The utility model aims to provide a traceless one-step negative angle forming die to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a seamless one-time negative angle forming mold, comprising: a lower mold and an upper mold installed above the lower mold for lifting, the bottom of the upper mold is provided with a processing area for pressing and bending the workpiece, a lifting and lowering pressing member is installed in the longitudinal direction of the middle of the processing area, the pressing member is used to press and fix the workpiece, and both sides of the pressing member are laterally symmetrically installed with relatively rotatable corner columns, each of the corner columns has a corner area formed along the axial direction for bending the edge of the workpiece, and based on the relative rotation, the two corner areas rotate and bend the two sides of the workpiece.

[0006] Preferably, a groove is transversely penetrated through the bottom of the upper mold, and installation grooves are opened on the inner walls on both sides of the groove. The processing area is formed between the groove and the two installation grooves, and the two corner columns are respectively rotatably installed in the installation grooves on both sides, and the pressing piece is longitudinally installed in the groove.

[0007] Preferably, the pressing piece includes a pressing block, and a lifting groove for accommodating the lifting of the pressing block is opened at the top of the groove, and each of the angle columns is penetrated by an angle groove along the axial direction, and each of the angle areas is respectively formed in a corresponding angle groove, and a skirt is provided on the outer side of the bottom of the pressing block, and the skirts on both sides extend into the angle groove.

[0008] Preferably, a first spring for pushing the pressing block downward is also installed in the lifting groove, and a receiving hole for receiving the first spring is opened on the top of the pressing block.

[0009] Preferably, a reset mechanism for rotationally resetting the angle column is also installed in the upper mold, and the reset mechanism is installed in the corresponding installation groove.

[0010] Preferably, the reset mechanism includes an arc block and an arc rod movably passing through the arc block, an arc groove for accommodating the arc block is opened in the installation groove along the radial direction, the arc rod is welded in the arc groove, a second spring sleeved on the arc rod is installed in the arc groove, and one end of the second spring abuts against the arc block.

[0011] Preferably, a lifting mechanism is installed above the lower mold, and the lifting mechanism is used to drive the upper mold to rise and fall.

[0012] Preferably, the lifting mechanism includes a top plate and a hydraulic cylinder installed on the top plate, a base is installed at the bottom of the lower mold, columns are installed at the four corners between the base and the top plate, and a movable plate that can be lifted and lowered on the columns is installed between the bottom end of the hydraulic cylinder and the upper mold.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] (1) The utility model adds two angled columns that cooperate with the pressing member. When the pressing member presses the workpiece onto the lower mold, the two sides of the workpiece are rotated and angled by the rotatable angled columns, thereby realizing that the equipment can perform negative angle forming on both sides of the workpiece at one time.

[0015] (2) The utility model adds a groove and two installation grooves. The two installation grooves and the groove facilitate the integrated installation of two angle columns and a pressing block on the bottom of the upper mold, so that the equipment can simultaneously perform negative angle forming on both sides of the workpiece through the two angle columns.

[0016] (3) The utility model adds a lifting groove and a first spring. When the upper mold is raised, the elastic force of the first spring allows the pressing block to be pushed outward from the lifting groove, which facilitates the separation of the pressing block from the upper mold, thereby allowing the pressing block to contact the workpiece before the corner column, and then facilitates the corner folding process after the workpiece is pressed and fixed by the pressing block.

[0017] (4) The utility model adds a reset mechanism. When the upper mold is separated from the lower mold, the elastic force of the second spring is released, thereby driving the arc block to move on the arc rod, thereby driving the corner column to automatically rotate and reset, so that the corner area on the corner column is in the initial position, so that the corner column can repeatedly perform corner processing on the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a front view of the utility model;

[0019] Figure 2 This is a front view of the utility model when the mold is closed;

[0020] Figure 3 It is a schematic diagram of the cooperation of the upper mold, the pressing block, the angle column and the reset mechanism of the utility model;

[0021] Figure 4 It is a three-dimensional diagram of the corner column and arc block of the utility model;

[0022] In the figure: 1. top plate; 2. hydraulic cylinder; 3. groove; 4. upper mold; 5. corner column; 6. corner groove; 7. skirt; 8. pressing block; 9. lower mold; 10. base; 11. column; 12. movable plate; 13. mounting groove; 14. lifting groove; 15. accommodating hole; 16. first spring; 17. arc groove; 18. arc block; 19. second spring; 20. arc rod. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] refer to Figure 1-2 As shown, the utility model provides a seamless one-time negative angle forming mold, comprising: a lower mold 9 and an upper mold 4 which is lifted and installed above the lower mold 9, the bottom of the upper mold 4 is provided with a processing area for pressing and bending the workpiece, a liftable pressing member is installed in the longitudinal direction of the middle of the processing area, the pressing member is used to press and fix the workpiece, and both sides of the pressing member are laterally symmetrically installed with relatively rotatable corner columns 5, each of which has a corner area formed along the axial direction for bending the edge of the workpiece, and the two corner areas are rotated and bent on the two sides of the workpiece based on relative rotation.

[0025] As mentioned above, when using the lower mold 9, upper mold 4, pressing piece and two corner columns 5 provided by the utility model, the upper mold 4 drives the pressing block 8 and the two corner columns 5 to descend toward the workpiece on the lower mold 9. During this process, the lifting and lowering pressing block 8 presses and clamps the workpiece to prevent the workpiece from displacement. When the corner area of ​​the corner column 5 contacts the workpiece, the corner column 5 rotates on the upper mold 4, thereby performing corner processing on the workpiece through the rotating corner column 5. At the same time, since there are two corner columns 5, the equipment can perform corner processing on both sides of the workpiece at the same time.

[0026] Further, in order to integrate the pressing block 8 and the two corner columns 5 on the upper mold 4, refer to Figure 1-2 As shown, the bottom of the upper mold 4 is horizontally penetrated by a groove 3, and mounting grooves 13 are provided on the inner walls on both sides of the groove 3. The processing area is formed between the groove 3 and the two mounting grooves 13. The two corner posts 5 are rotatably installed in the mounting grooves 13 on both sides, and the pressing piece is longitudinally installed in the groove 3. The pressing block 8 and the two corner posts 5 are integrated and installed at the bottom of the upper mold 4 through the groove 3 and the mounting groove 13, so that the equipment can simultaneously perform a one-time corner bending operation on both sides of the workpiece.

[0027] In the present utility model, combined with Figure 3 As shown, the pressing part of this embodiment includes a pressing block 8, and a lifting groove 14 for accommodating the lifting of the pressing block 8 is opened on the top of the groove 3. A corner groove 6 is penetrated through each corner column 5 along the axial direction, and each corner area is formed in the corresponding corner groove 6. A skirt 7 is provided around the outer side of the bottom of the pressing block 8, and the skirts 7 on both sides extend into the corner groove 6.

[0028] As mentioned above, when using the pressing block 8 provided by the utility model, the pressing block 8 is installed at the bottom of the upper mold 4 by lifting and lowering the lifting groove 14. When the upper mold 4 descends, the pressing block 8 first abuts against the workpiece, and the upper mold 4 continues to descend. During this process, the workpiece is clamped and fixed by the pressing block 8. When the bottom end of the corner column 5 abuts against the workpiece, the upper mold 4 continues to descend. At this time, the corner area on the corner column 5 bends the workpiece. When the corner column 5 descends again, the corner column 5 is squeezed by the skirt 7 and automatically rotates in the installation groove 13, so that the edge position of the workpiece is abutted against the edge position of the lower mold 9 through the corner column 5, thereby completing the cornering of the workpiece.

[0029] Further, in order to make the pressing block 8 always contact the workpiece before the angle column 5, refer to Figure 3 As shown, a first spring 16 for pushing the pressing block 8 downward is also installed in the lifting groove 14, and a receiving hole 15 for receiving the first spring 16 is provided on the top of the pressing block 8. The elastic force of the first spring 16 keeps the bottom of the pressing block 8 below the angle post 5 at all times, so that before the angle post 5 angles the workpiece, the pressing block 8 presses the workpiece against the lower mold 9 to prevent the workpiece from escaping from the clamping area between the pressing block 8 and the lower mold 9. After the workpiece is clamped, the upper mold 4 descends again, thereby driving the angle post 5 to abut against the workpiece. The angle post 5 rotates during the downward pressing process, thereby rotating and angle-folding the edge of the workpiece through the angle area.

[0030] In the present utility model, combined with Figure 3 As shown, the upper mold 4 of this embodiment is also equipped with a reset mechanism for rotating and resetting the corner column 5, and the reset mechanism is installed in the corresponding installation groove 13.

[0031] Combination Figure 3-4 As shown, the reset mechanism includes an arc block 18 and an arc rod 20 that movably passes through the arc block 18. An arc groove 17 for accommodating the arc block 18 is opened in the mounting groove 13 along the radial direction. The arc rod 20 is welded in the arc groove 17. A second spring 19 sleeved on the arc rod 20 is installed in the arc groove 17, and one end of the second spring 19 abuts against the arc block 18.

[0032] As mentioned above, when using the reset mechanism provided by the utility model, the arc rod 20 and the arc block 18 in the reset mechanism are both embedded in the mounting groove 13 through the arc groove 17, and the arc block 18 can rotate in the arc groove 17 with the axis of the arc rod 20 as the center of the circle. When the angle column 5 is separated from the workpiece, the elastic force of the second spring 19 is released, thereby driving the arc block 18 to change its position on the guard rod, and then driving the angle column 5 to automatically rotate and reset in the mounting groove 13, so that the angle area on the angle column 5 is above the edge position of the workpiece.

[0033] In the present utility model, combined with Figure 1-2 As shown, a lifting mechanism is also installed above the lower mold 9 of this embodiment, and the lifting mechanism is used to drive the upper mold 4 to rise and fall.

[0034] Combination Figure 1-2 As shown, the lifting mechanism includes a top plate 1 and a hydraulic cylinder 2 installed on the top plate 1, a base 10 is installed at the bottom of the lower mold 9, columns 11 are installed at the four corners between the base 10 and the top plate 1, and a movable plate 12 that can be lifted and lowered on the columns 11 is installed between the bottom end of the hydraulic cylinder 2 and the upper mold 4.

[0035] As described above, when using the lifting mechanism provided by the utility model, the base 10 in the lifting mechanism provides an installation position for the lower mold 9 and the column 11, the top plate 1 is suspended and installed above the lower mold 9 through the column 11, the top plate 1 provides an installation position for the hydraulic cylinder 2, the movable plate 12 provides a connecting component between the hydraulic cylinder 2 and the upper mold 4, and at the same time, the column 11 and the movable plate 12 provide a lifting guide for the lifting of the upper mold 4.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A traceless one-time negative angle forming die, characterized in that: include: A lower mold (9) and an upper mold (4) which is installed and lifted above the lower mold (9), wherein a processing area for pressing and bending a workpiece is provided at the bottom of the upper mold (4), a lifting pressing member is installed in the longitudinal direction of the middle of the processing area, and the pressing member is used to press and fix the workpiece, and both sides of the pressing member are laterally symmetrically installed with relatively rotatable bending columns (5), each of which is formed with a bending area for bending the edge of the workpiece in the axial direction, and the two bending areas are rotated and bent on the two sides of the workpiece based on relative rotation.

2. The traceless one-step negative angle forming die according to claim 1, characterized in that: A groove (3) is horizontally penetrated through the bottom of the upper mold (4), and mounting grooves (13) are provided on the inner walls on both sides of the groove (3). The processing area is formed between the groove (3) and the two mounting grooves (13). The two angled columns (5) are rotatably mounted in the mounting grooves (13) on both sides respectively, and the pressing piece is longitudinally mounted in the groove (3).

3. The seamless one-step negative angle forming die according to claim 2, characterized in that: The pressing member comprises a pressing block (8), a lifting groove (14) for accommodating the lifting of the pressing block (8) is provided at the top of the groove (3), each of the angled columns (5) is penetrated by an angled groove (6) along the axial direction, each of the angled areas is formed in a corresponding angled groove (6), a skirt (7) is provided around the outer side of the bottom of the pressing block (8), and the skirts (7) on both sides extend into the angled groove (6).

4. The seamless one-step negative angle forming die according to claim 3, characterized in that: A first spring (16) for pushing the pressing block (8) downward is also installed in the lifting groove (14), and a receiving hole (15) for receiving the first spring (16) is provided on the top of the pressing block (8).

5. The seamless one-step negative angle forming die according to claim 2, characterized in that: The upper mold (4) is also provided with a reset mechanism for rotating and resetting the angle column (5), and the reset mechanism is installed in the corresponding installation groove (13).

6. The traceless one-step negative angle forming die according to claim 5, characterized in that: The reset mechanism comprises an arc block (18) and an arc rod (20) movably passing through the arc block (18); an arc groove (17) for accommodating the arc block (18) is opened in the installation groove (13) along the radial direction; the arc rod (20) is welded in the arc groove (17); a second spring (19) sleeved on the arc rod (20) is installed in the arc groove (17); one end of the second spring (19) abuts against the arc block (18).

7. The seamless one-step negative angle forming die according to claim 1, characterized in that: A lifting mechanism is also installed above the lower mold (9), and the lifting mechanism is used to drive the upper mold (4) to rise and fall.

8. The seamless one-step negative angle forming die according to claim 7, characterized in that: The lifting mechanism comprises a top plate (1) and a hydraulic cylinder (2) mounted on the top plate (1); a base (10) is mounted at the bottom of the lower mold (9); columns (11) are mounted at four corners between the base (10) and the top plate (1); and a movable plate (12) that can be lifted and lowered on the columns (11) is mounted between the bottom end of the hydraulic cylinder (2) and the upper mold (4).

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