A swing type bending mechanism

Abstract

The utility model relates to a kind of swing type bending mechanism, including turnover seat, tool rest and swing driving element;The turnover seat is movably and reversibly arranged on the rack of bending center;Two ends of the tool rest are rotatably arranged on the turnover seat by pivot, and the top of the tool rest is fixedly provided with cutter;The swing driving element is fixedly arranged on the turnover seat, and the output end of the swing driving element is movably connected with the bottom of the tool rest by swing hinge assembly, to drive the tool rest swing.The utility model drives cutter to swing a certain angle in turnover process by swing driving element and swing hinge assembly, so that the cutting edge of cutter can still be vertically aligned after turnover, which not only avoids the problem that cutter will collide with positioning machine or bottom tool after turning 180°, but also ensures the normal progress of bending process.

Description

Technical Field

[0001] This utility model relates to a swing-type bending mechanism, belonging to the technical field of bending equipment. Background Technology

[0002] A bending center is a CNC machine capable of continuously bending thin plates. It typically includes a positioning table, a bottom cutter, and a bending mechanism. The plate is fed onto the positioning table, where it is held and fixed by the bottom cutter, and then bent by the bending mechanism, thus achieving automated processing of the plate.

[0003] During continuous bending, the cutting tool needs to frequently switch between upward bending and downward bending modes. When the cutting tool is flipped, if it is set to flip 180°, the tool will collide with the positioning table or bottom cutter due to its own thickness; if it is set to flip less than 180°, the cutting edge of the tool will not be vertically aligned upwards, and the bending process cannot be performed normally.

[0004] The traditional approach is to use a set of eccentric shafts to make the tool swing a certain distance during rotation (set according to the thickness of the tool itself), so that its rotation stroke is not enough to reach 180°, thereby avoiding collision between the tool and the positioning machine or bottom tool.

[0005] The aforementioned existing technology has the following drawbacks: when the thickness of the sheet metal is different or the bending requirements are different, it is often necessary to change to a tool of different thickness for bending. However, due to the structural characteristics of the eccentric shaft, its swing distance cannot be adjusted. Therefore, when changing to a tool of different thickness, it is necessary to match a corresponding eccentric shaft for replacement, which increases the processing cost and operating cost of the equipment.

[0006] Therefore, the research objective of this utility model is to provide a swing-type bending mechanism that can adjust the blade angle according to the flipping angle. Utility Model Content

[0007] To address the shortcomings of the aforementioned technologies, this utility model provides a swing-type bending mechanism. By using a swing drive element and a swing hinge assembly to drive the cutter to swing at a certain angle during the flipping process, the cutting edge of the cutter can still be vertically aligned after flipping. This avoids the problem of the cutter colliding with the positioning machine or bottom cutter when flipped 180°, and also ensures the normal operation of the bending process.

[0008] To solve the problems of the existing technology, the technical solution adopted by this utility model is as follows: A swing-type bending mechanism includes a flipping seat, a tool holder, and a swing drive element; The flipping seat is movably and flip-ably mounted on the frame at the bending center; The two ends of the tool holder are rotatably mounted on the flipping seat via a rotating shaft, and a tool is fixedly mounted on the top of the tool holder; The swing drive element is fixedly mounted on the flip base, and the output end of the swing drive element is movably connected to the bottom of the tool holder through a swing hinge assembly to drive the tool holder to swing.

[0009] Furthermore, the rocker hinge assembly includes a first rocker and a second rocker. One end of the first rocker is hinged to the output end of the rocker drive element, and the other end is hinged to the second rocker. The other end of the second rocker is fixedly connected to the bottom of the tool holder.

[0010] Furthermore, the swing drive element is configured as a servo worm gear screw jack, and the output end of the swing drive element is configured as a first screw, one end of which is fixedly connected to a U-shaped hinge joint, and the first rocker arm is hinged to the hinge joint.

[0011] Furthermore, it also includes two sets of sliding seats, which are fixedly mounted on the frame at the bending center, and the inner side of each set of sliding seats is connected to a second lead screw via a lead screw nut.

[0012] Furthermore, the two ends of the flipping seat are movably mounted on the two sets of sliding seats via slide rails, and the two ends of the flipping seat are also fixedly equipped with a first motor, which is connected to the second lead screw drive.

[0013] Furthermore, each of the two sets of sliding seats has a fixedly connected flip flange at the relatively far end, and the flip flange at the end far from the sliding seat is connected to a second motor.

[0014] The beneficial effects of this utility model are: by driving the tool to swing at a certain angle during the flipping process through the swing drive element and the swing hinge assembly, the cutting edge of the tool can still be vertically aligned after flipping, which not only avoids the problem of the tool colliding with the positioning machine or bottom tool when flipped 180°, but also ensures the normal progress of the bending process. Attached Figure Description

[0015] Figure 1 This is one of the structural schematic diagrams of this utility model.

[0016] Figure 2 This is the second structural schematic diagram of this utility model.

[0017] Figure 3 This is a schematic diagram of the structure of the tool holder and the swing drive element of this utility model.

[0018] Figure 4 This is a schematic diagram of the structure of the swing drive element and swing assembly of this utility model.

[0019] Figure 5This is a schematic diagram of the structure of the sliding seat, the first motor, and the second motor of this utility model.

[0020] Figure 6 This is a schematic diagram of the structure of the first motor and the second lead screw of this utility model.

[0021] The components include: a flipping seat 10, a tool holder 20, a rocking drive element 30, a cutting tool 21, a rocking hinge assembly 40, a first rocker arm 41, a second rocker arm 42, a first lead screw 31, a hinge joint 32, a sliding seat 50, a lead screw nut 51, a second lead screw 52, ​​a first motor 11, a flipping flange 60, and a second motor 70. Detailed Implementation

[0022] To enable those skilled in the art to better understand the technical solution of this utility model, the following description is provided in conjunction with the appendix. Figure 1-6 Further analysis of this utility model is then conducted.

[0023] like Figure 1-6 As shown, a swing-type bending mechanism includes a flipping seat 10, a tool holder 20, and a swing drive element 30; The flipping seat 10 is movably and flip-ably mounted on the frame at the bending center; The two ends of the tool holder 20 are rotatably mounted on the flipping seat 10 via a rotating shaft, and the top of the tool holder 20 is fixedly provided with a tool 21; The swing drive element 30 is fixedly mounted on the flip base 10. The output end of the swing drive element 30 is movably connected to the bottom of the tool holder 20 through the swing hinge assembly 40 to drive the tool holder 20 to swing.

[0024] In this embodiment, preferably, the rocker hinge assembly 40 includes a first rocker arm 41 and a second rocker arm 42. One end of the first rocker arm 41 is hinged to the output end of the rocker drive element 30, and the other end is hinged to the second rocker arm 42. The other end of the second rocker arm 42 is fixedly connected to the bottom of the tool holder 20.

[0025] In this embodiment, preferably, the swing drive element 30 is configured as a servo worm gear screw jack, and the output end of the swing drive element 30 is configured as a first screw 31. One end of the first screw 31 is fixedly connected to a U-shaped hinge joint 32. The first rocker arm 41 is hinged to the hinge joint 32. When the swing drive element 30 is working, it drives the first screw 31 to move, and drives the first rocker arm 41 and the second rocker arm 42 to swing through the first screw 31, thereby driving the tool holder 20 to swing, so that the tool 21 swings at a certain angle during the flipping process. The swing angle is determined according to the flipping angle of the tool 21, so that the cutting edge of the tool 21 can still be vertically aligned after flipping, ensuring the normal operation of the bending process.

[0026] In this embodiment, preferably, it also includes two sets of sliding seats 50. The two sets of sliding seats 50 are fixed on the frame at the bending center, and the inner side of each set of sliding seats 50 is connected to a second lead screw 52 through a lead screw nut 51.

[0027] In this embodiment, preferably, the two ends of the flipping seat 10 are movably mounted on the two sets of sliding seats 50 via slide rails, and the two ends of the flipping seat 10 are also fixedly provided with a first motor 11. The first motor 11 is connected to the second lead screw 52 for transmission. The first motor 11 drives the second lead screw 52 to rotate, and the lead screw nut 51 drives the sliding seat 50 to move on the slide rail, so that the flipping seat 10 moves relative to each other due to the relative force, thereby driving the cutter 21 away from or closer to the plate.

[0028] In this embodiment, preferably, a flip flange 60 is fixedly connected to one end of each of the two sets of sliding seats 50 that are relatively far apart. A second motor 70 is driven to the end of the flip flange 60 that is far away from the sliding seat 50. The second motor 70 and the flip flange 60 drive the sliding seat 50 to rotate and drive the flip seat 10 to flip, thereby driving the cutter 21 to flip and perform a bending process on the plate.

[0029] The working principle of this utility model is as follows: When bending the sheet metal from bottom to top, the second motor 70 drives the tilting seat 10 to rotate below the positioning table. Then, the first motor 11 drives the tilting seat 10 to move upward, so that the cutter 21 abuts against the bottom of the sheet metal. Under the drive of the second motor 70, it rotates upward at a certain angle to perform the upward bending process. When bending the sheet metal from top to bottom, the second motor 70 drives the tilting seat 10 to rotate above the positioning table. During this process, to avoid the cutter 21 rotating completely 180° and colliding with the positioning table or the bottom cutter, The flipping angle can be set by the CNC system according to the thickness of the tool 21. The thicker the tool 21, the smaller the flipping angle (approximately 160°), and the thinner the tool 21, the larger the flipping angle (approximately 170°). After flipping, the tool holder 20 is driven to swing at a certain angle by the swing drive element 30 and the swing hinge assembly 40, so that the cutting edge of the tool 21 is always set vertically upward. Then, the flipping seat 10 is driven by the first motor 11 to move downward, so that the tool 21 abuts against the top of the plate. Under the drive of the second motor 70, it is flipped downward at a certain angle to perform a downward bending process on the plate. After each bending or before flipping, the flipping seat 10 needs to move upward or downward a certain distance to keep the tool 21 away from the plate and avoid contact between the tool 21 and the plate during flipping.

[0030] The swing-type bending mechanism provided by this utility model has a more flexible flipping angle and is suitable for bending relatively thin plates.

[0031] This document uses embodiments to illustrate the principles and implementation methods of this application. The descriptions of the embodiments above are only for the purpose of helping to understand the methods and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A swing-type bending mechanism, characterized in that: Includes a tilting base, a tool holder, and a sway drive element; The flipping seat is movably and flip-ably mounted on the frame at the bending center; The two ends of the tool holder are rotatably mounted on the flipping seat via a rotating shaft, and a tool is fixedly mounted on the top of the tool holder; The swing drive element is fixedly mounted on the flip base, and the output end of the swing drive element is movably connected to the bottom of the tool holder through a swing hinge assembly to drive the tool holder to swing.

2. The swing-type bending mechanism according to claim 1, characterized in that: The rocker hinge assembly includes a first rocker and a second rocker. One end of the first rocker is hinged to the output end of the rocker drive element, and the other end is hinged to the second rocker. The other end of the second rocker is fixedly connected to the bottom of the tool holder.

3. The swing-type bending mechanism according to claim 2, characterized in that: The rocking drive element is configured as a servo worm gear screw jack, and the output end of the rocking drive element is configured as a first screw. One end of the first screw is fixedly connected to a U-shaped hinge joint, and the first rocker arm is hinged to the hinge joint.

4. The swing-type bending mechanism according to claim 3, characterized in that: It also includes two sets of sliding seats, which are fixedly mounted on the frame at the bending center, and the inner side of each set of sliding seats is connected to a second lead screw via a lead screw nut.

5. The swing-type bending mechanism according to claim 4, characterized in that: The two ends of the flipping seat are movably mounted on two sets of sliding seats via slide rails, and the two ends of the flipping seat are also fixedly equipped with a first motor, which is connected to the second lead screw drive.

6. The swing-type bending mechanism according to claim 5, characterized in that: Both sets of sliding seats have a rotating flange fixedly connected to their opposite ends, and a second motor is driven to the end of the rotating flange that is away from the sliding seat.

Images