CN117000845A - Traceless large arc bending device for metal and its process - Google Patents

Abstract

The invention relates to the technical field of bending tools, and provides a traceless large arc bending device for metal and a process thereof, wherein the traceless large arc bending device for metal comprises a machine table, a die is arranged on the machine table, and the traceless large arc bending device further comprises: the movable table, bend the frame, the back shaft, bend the axle, inductive probe, the supporting rack, bend mechanism and supporting mechanism, the movable table is equipped with two, the movable table slides and sets up on the board, bend the frame and slide and set up on the board, the back shaft is equipped with two, the back shaft and movable table one-to-one, inductive probe is equipped with a plurality of, all be provided with inductive probe on mould, support frame and the driving frame, the supporting rack sets up on the board, the mechanism of bending sets up on the board, supporting mechanism sets up on the board, through above-mentioned technical scheme, frequent change mould not only wastes time and energy in the correlation technique has been solved, mould hardness is higher moreover, leave comparatively obvious suppression trace easily on sheet metal, influence the problem of the outward appearance of product.

Description

Traceless large arc bending device for metal and its process

Technical field

The present invention relates to the technical field of bending tooling. Specifically, it relates to a traceless large arc bending device for metal and its process.

Background technique

Under the pressure of the upper or lower mold of the bending machine, the metal sheet first undergoes elastic deformation and then enters plastic deformation. In the initial stage of plastic bending, the metal sheet is freely bent as the upper or lower die presses against the sheet. Pressure is applied, and the sheet metal gradually comes closer to the inner surface of the lower mold. At the same time, the radius of curvature and the bending force arm also gradually become smaller. Continue to apply pressure until the end of the stroke, so that the upper and lower molds are in full contact with the sheet at three points. At this time, the metal is completed. Bending of sheet metal.

There are a large number of arc plates in mechanical parts in aerospace, medical, automobile and other industries. When metal sheets need to be bent in large arcs, they usually need to be pressed through D-type molds. However, when arcs of different specifications are required, The plates require different molds for pressing. Frequent replacement of molds is not only time-consuming and labor-intensive, but also the molds are usually quenched. Therefore, the hardness is high and it is easy to leave obvious pressing marks on the metal plates, affecting the appearance of the product.

Contents of the invention

The present invention proposes a traceless large arc bending device for metal and its process, which solves the problem that frequent mold replacement in related technologies is not only time-consuming and labor-intensive, but also has high hardness and easily leaves obvious pressing marks on the metal plate. , problems that affect the appearance of the product.

The technical solution of the present invention is as follows: a traceless large arc bending device for metal, including a machine platform, a mold is provided on the machine platform, and also includes: a moving platform, a bending frame, a support shaft, a bending shaft, Induction probe, holding frame, bending mechanism and holding mechanism;

There are two mobile stations, and the mobile stations are arranged on the machine platform;

The bending frame is slidably installed on the machine platform;

There are two support shafts, the support shafts correspond to the moving platform one-to-one, and the support shafts are arranged on the moving platform through the rotation of the support frame;

The bending shaft is rotated on the bending frame through the driving frame;

There are multiple induction probes, and the induction probes are all provided on the mold, the support frame and the drive frame;

The supporting frame is arranged on the machine platform;

The bending mechanism is arranged on the machine platform and is used for arc-shaped bending of metal sheets;

The lifting mechanism is arranged on the machine platform and is used to lift the bent metal sheet.

Preferably, the bending mechanism includes: a first motor, a second motor, a third motor, a fourth motor and an installation mechanism;

The first motor is arranged on the driving frame, the output end of the first motor is provided with a driving wheel, the bending shaft is provided with a transmission wheel, and a driving belt is connected between the driving wheel and the transmission wheel;

The second motor is arranged on the machine platform, the output end of the second motor penetrates the machine platform and is provided with a moving screw, and the bending frame is provided with a screw hole and is threadedly connected to the moving screw;

The third motor is arranged on the machine platform, the output end of the third motor penetrates the machine platform and is provided with a driving screw, and the moving platform is provided with a screw hole and is threadedly connected to the driving screw;

The fourth motor is arranged on the machine platform. The output end of the fourth motor penetrates the machine platform and is provided with a two-way screw. Two sliders are slidably provided in the machine platform, and there are two sliders on the slider. The screw hole is threadedly connected to the two-way screw, and the moving platform is slidably installed in the carriage;

The installation mechanism is arranged on the support frame.

Further, the lifting mechanism includes: a lifting frame, a moving gear rack, a rotating gear, a lifting screw and a fixed mechanism;

The lifting frame is slidably arranged on the machine platform, and the supporting frame is arranged on the lifting frame;

The mobile gear rack is arranged on the bending rack;

The rotating gear is rotatably arranged in the machine;

The lifting screw is arranged on the rotating gear, and the lifting frame is provided with a screw hole and is threadedly connected to the lifting screw;

The fixing mechanism is arranged on the supporting frame and is used to fix the metal sheet.

Furthermore, the installation mechanism includes: an installation box and a slider;

The installation box is arranged on one of the support frames, the mold is provided with a mounting block, and the mounting block is arranged in the installation box;

The slider is disposed on another support frame, and the slider is slidably disposed in the installation box.

Further, the fixing mechanism includes: a first electric cylinder and a fixing plate;

The first electric cylinder is arranged on the supporting frame;

The fixed plate is arranged at the output end of the first electric cylinder.

Furthermore, a sliding rod is provided in the machine platform, a moving ring is provided on the moving gear rack, and the moving ring is slidably mounted on the sliding rod.

The method of using the traceless large arc bending device for metal includes the above-mentioned traceless large arc bending device for metal, and also includes the following steps:

S1. Debugging: When it is necessary to adjust the bending angle of the support axis and the bending axis, the two adjacent induction probes sense each other. After sensing, they will approach each other, and the second motor drives the moving screw to rotate, and the moving screw rotates. When the bending frame and the bending axis are moved, the third motor drives the driving screw to rotate, driving the support shaft set on the moving table to move, so that the support shaft and the bending axis automatically fit the bending dimensions of the mold.

S2. Bending: The first motor drives the driving wheel to rotate, and the driving belt and transmission wheel rotate to drive the bending axis to rotate, thereby bending the metal sheet.

S3. Lifting calibration: The second motor drives the moving screw to rotate in the opposite direction, thereby driving the bending frame to move in the opposite direction. When the moving rack moves, it engages and rotates with the rotating gear, thereby driving the lifting screw to rotate. When the lifting screw rotates, it drives The lifting frame rises, so that the supporting frame can lift the bent metal sheet, and then the bent metal sheet can be placed into the mold for calibration.

The working principle and beneficial effects of the present invention are:

1. In the present invention, the support frame, the bending frame and the induction probe provided on the mold sense each other, so that the support shaft and the bending shaft are automatically adjusted according to the size of the mold, which is more time-saving and labor-saving.

2. In the present invention, the first motor installed on the machine table drives the driving wheel and the driving belt to rotate, drives the transmission and bending shaft to rotate, and cooperates with the support shaft to bend the metal sheet in a large arc.

3. In the present invention, the movement of the bending frame drives the movable gear frame to move. When the movable gear frame moves, it drives the rotating gear to rotate. When the rotating gear rotates, it drives the lifting screw to rotate. When the lifting screw rotates, it drives the lifting frame and lifter. The frame rises to lift the bent metal sheet and extend it into the mold to calibrate the bent metal sheet.

Compared with the existing technology, this equipment facilitates the replacement of molds according to different bending specifications, and automatically adjusts the bending angles of the bending axis and the support axis, which is more time-saving and labor-saving. Through the cooperation of the bending axis and the support axis, the The metal sheet is bent, which reduces the bending marks on the metal sheet and does not easily affect the appearance of the product.

Description of the drawings

The present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

Figure 1 is a schematic diagram of the overall structure of the present invention;

Figure 2 is a schematic structural diagram of the entire structure of the present invention from another angle;

Figure 3 is a schematic cross-sectional structural diagram of the present invention;

Figure 4 is a structural schematic diagram of the cooperation of the mold, bending shaft, bending mechanism and installation mechanism in the present invention;

Figure 5 is a structural schematic diagram of the cooperation of the bending frame, the bending shaft, the second motor, the moving screw and the lifting mechanism in the present invention;

Figure 6 is a structural schematic diagram of the cooperation between the moving platform, the support shaft, the support frame, the third motor, the driving screw, the fourth motor, the two-way screw and the slide frame in the present invention;

Figure 7 is a schematic structural diagram of the cooperation between the bending frame and the lifting mechanism in the present invention.

The numbers in the figure respectively represent: 1. Machine; 2. Mold; 3. Moving table; 4. Bending frame; 5. Support shaft; 6. Support frame; 7. Bending shaft; 8. Induction probe; 9. Holding frame; 10. First motor; 11. Driving wheel; 12. Transmission wheel; 13. Driving belt; 14. Second motor; 15. Moving screw; 16. Third motor; 17. Driving screw; 18. Four motors; 19. Two-way screw; 20. Slide frame; 21. Lifting frame; 22. Moving rack; 23. Rotating gear; 24. Lifting screw; 25. Installation box; 26. Installation block; 27. Slider; 28 , the first electric cylinder; 29, fixed plate; 30, sliding rod; 31, moving ring; 32, drive frame.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. 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 of ordinary skill in the art without making creative efforts fall within the scope of protection of the present invention.

As shown in Figures 1 to 7, this embodiment proposes a traceless large arc bending device for metal, including a machine platform 1, a mold 2 is provided on the machine platform 1, and also includes: a moving platform 3, a bending Frame 4, support shaft 5, bending shaft 7, induction probe 8, holding frame 9, bending mechanism and holding mechanism. There are two moving tables 3. The moving table 3 is set on the machine table 1, and the bending frame 4 is slidably installed on the machine platform 1. There are two support shafts 5. The support shafts 5 correspond to the moving platform 3 one by one. The support shaft 5 is rotated and installed on the moving platform 3 through the support frame 6. The bending axis 7 passes through the driving frame. 32 is rotatably arranged on the bending frame 4, and a plurality of induction probes 8 are provided. The mold 2, the support frame 6 and the drive frame 32 are all provided with induction probes 8, and the holding frame 9 is provided on the machine platform 1.

The bending mechanism is arranged on the machine 1 and is used for arc-shaped bending of metal sheets. The bending mechanism includes: a first motor 10, a second motor 14, a third motor 16, a fourth motor 18 and an installation mechanism. , the first motor 10 is arranged on the driving frame 32, the output end of the first motor 10 is provided with a driving wheel 11, the bending shaft 7 is provided with a transmission wheel 12, and a driving belt is connected between the driving wheel 11 and the transmission wheel 12 13. The second motor 14 is arranged on the machine platform 1. The output end of the second motor 14 penetrates the machine platform 1 and is provided with a moving screw rod 15. The bending frame 4 is provided with a screw hole and is threadedly connected to the moving screw rod 15. Three motors 16 are arranged on the machine platform 1. The output end of the third motor 16 penetrates the machine platform 1 and is provided with a driving screw 17. A screw hole is provided on the moving platform 3 and is threadedly connected to the driving screw 17. A fourth motor 18 is provided On the machine 1, the output end of the fourth motor 18 penetrates the machine 1 and is provided with a two-way screw 19. Two slides 20 are slidably provided in the machine 1. The slides 20 are provided with screw holes and are threadedly connected to the two-way screws 19. On the screw 19, the moving platform 3 is slidably arranged in the carriage 20, and the mounting mechanism is arranged on the support frame 6.

Among them, the second motor 14 drives the moving screw 15 to rotate. When the moving screw 15 rotates, it drives the bending frame 4 to move, thereby driving the bending axis 7 to move. The third motor 16 provided on the machine 1 drives the driving screw. 17 rotates, thereby driving the moving platform 3 to move, thereby driving the support shaft 5 provided on the moving platform 3 to move, so that the bending axis 7 and the supporting axis 5 fit the angle of the mold 2, and then driven by the first motor 10 The driving wheel 11 rotates, and drives the transmission wheel 12 to rotate through the driving belt 13, thereby driving the bending shaft 7 to rotate, so that the metal sheet is squeezed between the support shaft 5 and the bending shaft 7, thereby bending the metal plate. The material is bent.

What needs to be added is that when the bending angle of the support shaft 5 and the bending shaft 7 needs to be adjusted, the induction probes 8 provided on the support frame 6, the bending frame 4 and the mold 2 sense each other, and the two adjacent ones The induction probes 8 sense each other and will approach each other after sensing, so that the support shaft 5 and the bending shaft 7 automatically fit the bending size of the mold 2, thereby reducing the trouble of adjustment by the operator;

Through the slow rotation of the support shaft 5 and the bending shaft 7, the metal sheet is repeatedly rolled between the support shaft 5 and the bending shaft 7, thereby reducing the creases produced when the metal plate is bent and not easily affected. The appearance of the product.

The lifting mechanism is arranged on the machine platform 1 and is used to lift the bent metal sheet. The lifting mechanism includes: a lifting frame 21, a moving gear rack 22, a rotating gear 23, a lifting screw 24 and a fixed mechanism. The lifting frame 21 is slidably arranged on the machine platform 1, the supporting frame 9 is arranged on the lifting frame 21, the movable gear rack 22 is arranged on the bending frame 4, the rotating gear 23 is rotated and arranged in the machine platform 1, and the lifting screw 24 is arranged on the rotating gear. 23, the lifting frame 21 is provided with a screw hole and is threadedly connected to the lifting screw 24. The fixing mechanism is provided on the supporting frame 9 for fixing the metal sheet.

Among them, after the metal sheet is bent, the second motor 14 provided on the machine 1 drives the moving screw 15 to rotate in the opposite direction, thereby driving the bending frame 4 to move in the opposite direction, thereby driving the bending frame 4 provided with The moving plate rack moves. When the moving rack 22 moves, it meshes with the rotating gear 23 and drives the rotating gear 23 to rotate, thereby driving the lifting screw 24 provided on the rotating gear 23 to rotate. When the lifting screw 24 rotates, it drives the lifting frame 21 to rotate. Ascending, the supporting frame 9 can lift the bent metal sheet, and then the bent metal sheet can be placed into the mold 2 for calibration.

What needs to be added is that since the movable rack 22 and the bending rack 4 are fixed together, when the bending rack 4 moves, the movable rack 22 will move with the bending rack 4, and the bending rack 4 moves closer. When the direction of the table 3 approaches, the movable rack 22 is driven to move. When the movable rack 22 moves, it meshes with the rotating gear 23 and drives the rotating gear 23 to rotate, which in turn drives the lifting screw 24 to rotate, thus driving the supporting frame 9 to descend. When the bending frame 4 is far away from the moving platform 3, the supporting frame 9 rises, thereby achieving a linkage effect, eliminating the need for manual individual control and realizing automation.

The installation mechanism includes: an installation box 25 and a slider 27. The installation box 25 is set on one of the support frames 6. The mold 2 is provided with a mounting block 26. The installation block 26 is set in the installation box 25 and is set on the other support frame 6. on, the slider 27 is slidably disposed in the installation box 25 .

The installation block 26 is inserted into the installation box 25 and slides in the installation box 25 through the slider 27 provided on the support block, so that the mold 2 can be installed while following the movement of the support frame 6 .

What needs to be added is that the installation block 26 is directly placed in the installation box 25. When the mold 2 of different sizes needs to be replaced, the mold 2 can be directly lifted up, so that the installation block 26 can be separated from the installation box 25 and different specifications can be quickly replaced. Mold 2 for quick replacement.

The fixing mechanism includes: a first electric cylinder 28 and a fixing plate 29. The first electric cylinder 28 is arranged on the supporting frame 9, and the fixing plate 29 is arranged at the output end of the first electric cylinder 28.

Among them, when the lifting frame 9 rises and lifts the metal sheet, the first electric cylinder 28 provided on the lifting frame 9 drives the fixing plate 29 to fix the metal sheet, thereby improving the stability of the metal sheet when it is lifted. stability.

It should be added that when the bent metal sheet is lifted and fixed, the fixed metal sheet only fits the supporting frame 9 and the fixing plate 29 so that the metal sheet remains vertical. Lift up and enter the mold 2 for calibration. If the bent metal sheet cannot be fed into the mold 2, it proves that the bending of the metal sheet does not meet the specifications, so it is dropped through the supporting frame 9, so that The metal sheet re-enters between the support shaft 5 and the bending shaft 7 to continue the bending operation.

The machine 1 is provided with a sliding rod 30, and the moving gear rack 22 is provided with a moving ring 31. The moving ring 31 is slidably disposed on the sliding rod 30 to increase the sliding stability of the moving gear rack 22.

The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention. within.

Claims (7)

1. A no trace major arc bending device for metal, including board (1), be provided with mould (2) on board (1), its characterized in that still includes:

the mobile stations (3), the mobile stations (3) are provided with two, and the mobile stations (3) are arranged on the machine table (1);

the bending frame (4) is arranged on the machine table (1) in a sliding manner;

the support shafts (5) are arranged, the two support shafts (5) are in one-to-one correspondence with the mobile stations (3), and the support shafts (5) are rotatably arranged on the mobile stations (3) through support frames (6);

the bending shaft (7) is rotatably arranged on the bending frame (4) through a driving frame (32);

the induction probes (8) are arranged, a plurality of induction probes (8) are arranged, and the induction probes (8) are arranged on the die (2), the supporting frame (6) and the driving frame (32);

the supporting frame (9), the supporting frame (9) is arranged on the machine table (1);

the bending mechanism is arranged on the machine table (1) and is used for bending the metal plate in an arc shape;

and the supporting mechanism is arranged on the machine table (1) and is used for supporting the bent metal plate.

2. The traceless large arc bending apparatus for metal as defined in claim 1, wherein the bending mechanism comprises:

the bending device comprises a driving frame (32), a first motor (10), a driving wheel (11) and a bending shaft (7), wherein the first motor (10) is arranged on the driving frame (32), the driving wheel (12) is arranged on the bending shaft (7), and a driving belt (13) is connected between the driving wheel (11) and the driving wheel (12) in a transmission manner;

the second motor (14), the second motor (14) is arranged on the machine table (1), the output end of the second motor (14) penetrates through the machine table (1) and is provided with a movable screw (15), and the bending frame (4) is provided with a screw hole and is in threaded connection with the movable screw (15);

the third motor (16), the third motor (16) is arranged on the machine table (1), the output end of the third motor (16) penetrates through the machine table (1) and is provided with a driving screw (17), and the moving table (3) is provided with a screw hole and is in threaded connection with the driving screw (17);

the fourth motor (18), the fourth motor (18) is arranged on the machine table (1), the output end of the fourth motor (18) penetrates through the machine table (1) and is provided with a bidirectional screw rod (19), two sliding carriages (20) are arranged in the machine table (1) in a sliding mode, screw holes are formed in the sliding carriages (20) and are in threaded connection with the bidirectional screw rod (19), and the moving table (3) is arranged in the sliding carriages (20) in a sliding mode;

the installation mechanism is arranged on the supporting frame (6).

3. The traceless large arc bending apparatus for metal as defined in claim 2, wherein the jacking mechanism comprises:

the lifting frame (21), the lifting frame (21) is arranged on the machine table (1) in a sliding manner, and the supporting frame (9) is arranged on the lifting frame (21);

a movable rack (22), wherein the movable rack (22) is arranged on the bending rack (4);

a rotating gear (23), wherein the rotating gear (23) is rotatably arranged in the machine table (1);

the lifting screw (24) is arranged on the rotating gear (23), and the lifting frame (21) is provided with a screw hole and is in threaded connection with the lifting screw (24);

the fixing mechanism is arranged on the supporting frame (9) and used for fixing the metal plate.

4. A traceless large arc bending apparatus for metal as defined in claim 3, wherein the mounting mechanism comprises:

the mounting box (25) is arranged on one of the supporting frames (6), a mounting block (26) is arranged on the die (2), and the mounting block (26) is arranged in the mounting box (25);

the sliding block (27) is arranged on the other supporting frame (6), and the sliding block (27) is arranged in the mounting box (25) in a sliding mode.

5. The traceless large arc bending apparatus for metal as defined in claim 4, wherein the fixing mechanism comprises:

a first electric cylinder (28), wherein the first electric cylinder (28) is arranged on the supporting frame (9);

and the fixing plate (29) is arranged at the output end of the first electric cylinder (28).

6. The traceless large arc bending device for metal according to claim 5, wherein a sliding rod (30) is arranged in the machine table (1), a moving ring (31) is arranged on the moving rack (22), and the moving ring (31) is slidably arranged on the sliding rod (30).

7. A process for a traceless large arc bending device for metal, using the traceless large arc bending device for metal as claimed in claim 6, characterized by comprising the steps of:

s1, debugging: when the bending angles of the supporting shaft (5) and the bending shaft (7) are required to be adjusted, the two adjacent sensing probes (8) are mutually sensed, the two sensing probes are mutually close after being sensed, the second motor (14) drives the moving screw (15) to rotate, the moving screw (15) drives the bending frame (4) and the bending shaft (7) to move when rotating, and the third motor (16) drives the driving screw (17) to rotate, so that the supporting shaft (5) arranged on the moving table (3) is driven to move, and the supporting shaft (5) and the bending shaft (7) are automatically attached to the bending dimension of the die (2);

s2, bending: the driving wheel (11) is driven to rotate through the first motor (10), and the driving belt (13) and the driving wheel (12) rotate, so that the bending shaft (7) is driven to rotate, and the metal plate is bent;

s3, supporting and calibrating: the movable screw (15) is driven to reversely rotate through the second motor (14), the bending frame (4) is driven to reversely move, the movable rack (22) is meshed with the rotating gear (23) and rotates when moving, the lifting screw (24) is driven to rotate, the lifting frame (21) is driven to lift when the lifting screw (24) rotates, the supporting frame (9) is enabled to support the bent metal plate, and then the bent metal plate is supported in the die (2) for calibration.