U-shaped bending die

Abstract

The utility model relates to the field of bending dies, in particular to a U-shaped bending die which comprises a first base and a workpiece, a bending mechanism used for bending the peripheral edge of the bottom of the workpiece upwards is arranged on the first base, and the bending mechanism comprises a pressure applying portion and a positioning portion. The pressure applying part comprises a lifting plate arranged at the top of the first base, a bending frame is arranged on the periphery of the top of the lifting plate, a downward arc-shaped pit is formed in the top of the bending frame, and an oil cylinder used for driving the lifting plate to ascend and descend is arranged at the bottom of the first base; the positioning part comprises a second base arranged on the periphery of the top of the first base. According to the U-bending die, the bending mechanism is composed of the pressing part and the positioning part, one-time U-bending forming can be achieved through mutual cooperation of the pressing part and the positioning part, the structure is simple and compact, use is convenient, precision is high, and efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of bending die, especially the U -bending die. BACKGROUND

[0002] The U -bending die is a kind of key metal forming tool, is widely used in manufacturing industry, and its main function is to bend the edge of product to U shape upwards to meet the specific design and functional requirements.This kind of die plays an important role in the manufacture of electrical equipment, automobile parts production, building component processing and other fields.With the continuous progress of modern industrial technology, the shape, size and precision of product are also higher and higher.

[0003] Traditional bending process often relies on manual operation or simple mechanical equipment, not only low efficiency, and it is difficult to guarantee the consistency and precision of product, and the die needs to experience multiple steps and links in the processing process, which leads to the extension of processing cycle and the increase of cost.

[0004] Therefore, it is necessary to propose the U -bending die to solve the above problems. INVENTION CONTENTS

[0005] The main purpose of the utility model is to provide U -bending die, can effectively solve the problem in the background art.

[0006] To achieve the above object, the technical scheme adopted by the utility model is:

[0007] The U -bending die, including first base and workpiece, be provided with the bending mechanism for the upward bending of the bottom four edges of workpiece on the first base, the bending mechanism includes pressure part and positioning part;

[0008] The pressure part includes the lifting plate arranged on the top of the first base, the top of the lifting plate is provided with bending frame, and the top of the bending frame is provided with downward arc recess, the bottom of the first base is provided with the oil cylinder for driving the lifting plate to lift;

[0009] The positioning part includes the second base arranged on the top of the first base periphery, the second cylinder is symmetrically arranged between the first base and the second base periphery, the clamping block for clamping the periphery of workpiece is driven to displace by the second cylinder and is arranged between the first base and the second base periphery, the U -shaped flange corresponding with the arc recess on the top of the bending frame and adapting is arranged on the bottom of the clamping block, so that the bending frame is displaced to cooperate with the U -shaped flange to realize the bending of the bottom four edges of workpiece.

[0010] Preferably, the lifting plate is provided with a discharging assembly, the discharging assembly comprises a second support fixedly arranged on the top of the lifting plate, and the top of the second support is provided with a third cylinder, and the top output end of the third cylinder is provided with a discharging column driven to lift by the third cylinder.

[0011] Preferably, the bottom of the second base is provided with a linear guide rail corresponding to the clamping block, and the clamping block is movably connected with the linear guide rail.

[0012] Preferably, the four corners of the second base are provided with a pressing mechanism, the pressing mechanism comprises a first support arranged at the four corners of the top of the second base, the side wall of the first support is fixedly provided with a first cylinder, the top output end of the first cylinder is provided with a rack driven to lift by the first cylinder, the upper end of the first cylinder is rotatably connected with a rotating shaft corresponding to the rack, the rotating shaft is fixedly provided with a turnover arm away from the rotating shaft, the turnover arm is provided with a pressing block at the end away from the rotating shaft, and the rotating shaft is fixedly provided with a gear meshing with the rack.

[0013] Preferably, the middle part of the second base is provided with a through groove matched with the workpiece, and the lower end of the workpiece extends to the top of the bending frame through the through groove.

[0014] Preferably, the turnover arm corresponds to the top corner of the workpiece.

[0015] Compared with the prior art, the U-shaped bending mold has the following beneficial effects:

[0016] The U-shaped bending mold is composed of the pressing part and the positioning part, and one-time U-shaped forming can be realized through the cooperation of the pressing part and the positioning part, the structure is simple and compact, the U-shaped bending mold is convenient to use, the precision is high, and the efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a structural schematic view of the utility model;

[0018] Figure 2 is a sectional structure schematic view of the utility model;

[0019] Figure 3 is a structural schematic view of the utility model in a workpiece disassembled state;

[0020] Figure 4 is a structural schematic view of the utility model in a first base, a second base and a second support disassembled state;

[0021] Figure 5 is a structural schematic view of the utility model lifting plate, clamping block and bending frame.

[0022] Figure 6 is the structure schematic diagram of the bending frame and the clamping block in cooperation state of the utility model;

[0023] Figure 7 is the structure schematic diagram of the utility model down pressure mechanism.

[0024] In the drawing: 1, first base; 2, second base; 3, workpiece; 4, first support; 5, first cylinder; 6, turnover arm; 7, pressure block; 8, second cylinder; 9, oil cylinder; 10, lifting plate; 11, clamping block; 12, third cylinder; 13, unloading column; 14, second support; 15, bending frame; 16, U-shaped flange; 17, gear; 18, rack; 19, rotating shaft. DETAILED DESCRIPTION

[0025] In order to make the technical means, creation features, purposes and effects of the utility model easy to understand, the utility model is further described below in combination with specific embodiments.

[0026] As shown in Figures 1-7 , the U-shaped bending die includes a first base 1 and a workpiece 3, the first base 1 is provided with a bending mechanism for bending the bottom four edges of the workpiece 3 upward, the bending mechanism includes a pressing part and a positioning part;

[0027] The pressing part includes a lifting plate 10 arranged on the top of the first base 1, the top periphery of the lifting plate 10 is provided with a bending frame 15, and the top of the bending frame 15 is provided with a downward arc-shaped recess, the bottom of the first base 1 is provided with an oil cylinder 9 for driving the lifting plate 10 to lift and descend;

[0028] The positioning part includes a second base 2 arranged on the top periphery of the first base 1, the four symmetrical positions between the second base 2 and the first base 1 are provided with a second cylinder 8, the four positions between the first base 1 and the second base 2 are provided with a clamping block 11 driven to displace by the second cylinder 8 and used for clamping the four edges of the workpiece 3, in order to increase the stability of the clamping block 11, the bottom four edges of the second base 2 are provided with a linear guide rail corresponding to the clamping block 11, the clamping block 11 is movably connected with the linear guide rail, the bottom of the clamping block 11 is provided with a U-shaped flange 16 corresponding to and matching the arc-shaped recess on the top of the bending frame 15, so that the bending frame 15 is upwardly displaced to cooperate with the U-shaped flange 16 to realize the bending of the bottom four edges of the workpiece 3, the middle part of the second base 2 is provided with a through slot matching the workpiece 3, and the lower end of the workpiece 3 extends to the top of the bending frame 15 through the through slot.

[0029] Furthermore, a pressing mechanism is provided at the four corners of the second base 2. The pressing mechanism includes a first bracket 4 provided at the top four corners of the second base 2. A first cylinder 5 is fixedly provided on the side wall of the first bracket 4. A rack 18 driven by the first cylinder 5 is provided at the top output end of the first cylinder 5. A rotating shaft 19 corresponding to the rack 18 is rotatably connected to the upper end of the first cylinder 5. A flipping arm 6 is fixedly provided on the rotating shaft 19. The flipping arm 6 corresponds to the top corner of the workpiece 3. A pressure block 7 is provided at the end of the flipping arm 6 away from the rotating shaft 19. A gear 17 meshing with the rack 18 is fixedly provided on the rotating shaft 19.

[0030] Furthermore, the lifting plate 10 is provided with a material unloading assembly, which includes a second bracket 14 fixedly installed on the top of the lifting plate 10, a third cylinder 12 installed on the top of the second bracket 14, and a material unloading column 13 driven to lift by the third cylinder 12 installed at the top output end of the third cylinder 12.

[0031] During use, the lower end of workpiece 3 is inserted downwards through the through slot on the second base 2, so that the bottom of workpiece 3 contacts the top of bending frame 15. Then, the second cylinder 8 drives the clamping block 11 to move, and the clamping block 11 clamps the workpiece 3 around its perimeter. At this time, the arc-shaped recess at the bottom of bending frame 15 matches the U-shaped flange 16. Then, the hydraulic cylinder 9 drives the lifting plate 10 to rise, and the lifting plate 10 drives the bending frame 15 to rise. With the cooperation of the arc-shaped recess and the U-shaped flange 16, the lower edge of workpiece 3 is bent backwards. The workpiece is bent into a U-shape. Then, the hydraulic cylinder 9 drives the lifting plate 10 and the bending frame 15 to reset as a whole. The first cylinder 5 drives the rack 18 to rise. The rack 18 drives the tilting arm 6 to tilt downward through the gear 17 and the rotating shaft 19. The tilting arm 6 presses down on the workpiece 3 through the pressure block 7. The workpiece 3 moves down and the U-shaped edge around the lower end of the workpiece 3 separates from the U-shaped flange 16. Then, the second cylinder 8 drives the clamping block 11 to reset. Finally, the third cylinder 12 drives the unloading column 13 to lift the workpiece 3 upward, thereby realizing unloading.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A U-bend mould comprising a first base (1) and a workpiece (3), characterised in that: The first base (1) is provided with a bending mechanism for bending the bottom edge of the workpiece (3) upwards, which comprises a pressing part and a positioning part; The pressing part comprises a lifting plate (10) arranged on the top of the first base (1), the top of the lifting plate (10) is provided with a bending frame (15), and the top of the bending frame (15) is provided with a downward arc-shaped recess, and the bottom of the first base (1) is provided with an oil cylinder (9) for driving the lifting plate (10) to lift. The positioning part comprises a second base (2) arranged on the top of the first base (1), and a second cylinder (8) is arranged symmetrically around the first base (1) and the second base (2), and a clamping block (11) driven by the second cylinder (8) is arranged around the first base (1) and the second base (2) for clamping the workpiece (3), and the bottom of the clamping block (11) is provided with a U-shaped flange (16) corresponding to the arc-shaped recess of the top of the bending frame (15), so that the bending frame (15) is displaced upwards to cooperate with the U-shaped flange (16) to realize the bending of the bottom edge of the workpiece (3).

2. The U-folding mold according to claim 1, wherein: The lifting plate (10) is provided with a discharging assembly, the discharging assembly comprises a second support (14) fixedly arranged on the top of the lifting plate (10), and the top of the second support (14) is provided with a third cylinder (12), and the top output end of the third cylinder (12) is provided with a discharging column (13) driven by the third cylinder (12) to lift.

3. The U-folding mold according to claim 1, wherein: The bottom of the second base (2) is provided with a straight guide rail corresponding to the clamping block (11), and the clamping block (11) is movably connected with the straight guide rail.

4. The U-folding mold according to claim 1, wherein: The four corners of the second base (2) are provided with a pressing mechanism, the pressing mechanism comprises a first support (4) arranged on the top of the second base (2), a first cylinder (5) fixedly arranged on the side wall of the first support (4), a rack (18) driven by the first cylinder (5) to lift arranged on the top output end of the first cylinder (5), a rotating shaft (19) corresponding to the rack (18) rotatably connected to the upper end of the first cylinder (5), a turnover arm (6) fixedly arranged on the rotating shaft (19), a pressing block (7) arranged on the end of the turnover arm (6) away from the rotating shaft (19), and a gear (17) meshing with the rack (18) fixedly arranged on the rotating shaft (19).

5. The U-folding mold according to claim 1, wherein: The middle part of the second base (2) is provided with a through slot matched with the workpiece (3), and the lower end of the workpiece (3) extends to the top of the bending frame (15) through the through slot.

6. The U-folding mold according to claim 4, wherein: The turnover arm (6) corresponds to the top corner of the workpiece (3).

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