Bending center with new type of transmission mechanism

Abstract

The application discloses a bending center with a novel transmission mechanism, which is arranged on a rack through a first bending driving device and drives a bending frame to move back and forth, the first bending driving device comprises a first driving assembly, a first eccentric shaft and a first transmission rod assembly, and is arranged on the rack and cooperates with a second bending driving device to drive the bending frame to complete a bending action, the second bending driving device comprises a second driving assembly, a second eccentric shaft and a second transmission rod assembly; the bending frame is driven to complete a bending process in two directions through the eccentric shaft transmission mode, compared with a traditional screw rod transmission mode, the bending center has the advantages of faster response speed, higher bending precision, more bending angles of the bending frame, and more bending processes of different angles completed through the cooperation of the first eccentric shaft and the second eccentric shaft, so that more machining requirements can be met.

Description

Technical Field

[0001] This invention relates to the field of bending machines, and in particular to a bending center with a novel transmission mechanism. Background Technology

[0002] A bending machine is a machine capable of bending thin plates. Its main structure includes a support frame, a worktable, and a clamping plate. The worktable is placed on the support frame and consists of a base and a pressure plate. The base is connected to the clamping plate via a hinge. The base comprises a housing, a coil, and a cover plate. The coil is placed in a recess in the housing, and the top of the recess is covered by the cover plate. During operation, the coil is energized by a wire, generating an attractive force on the pressure plate, thus clamping the thin plate between the pressure plate and the base. Because it uses electromagnetic clamping, the pressure plate can be made to meet various workpiece requirements, and it can process workpieces with side walls. Operation is also very simple. A bending center is also a type of bending machine.

[0003] Existing bending centers typically use a lead screw drive to perform forward and backward bending, and then use the same drive to perform the vertical bending. However, this lead screw drive method is slow, resulting in inconsistent bending accuracy. Furthermore, the bending angle is relatively fixed, limiting it to only vertical bending and failing to meet broader processing requirements. Therefore, it is necessary to further improve the existing bending center structure. Summary of the Invention

[0004] In view of this, the present invention addresses the shortcomings of the existing technology, and its main objective is to provide a bending center with a novel transmission mechanism, which can effectively solve the problems of slow response speed, insufficient bending accuracy, fixed bending angle, and inability to meet more processing requirements of existing bending centers.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A bending center with a novel transmission mechanism includes a frame, a tool holder, a tool head, a tool drive device, a bending frame, a bending cutter head, a first bending drive device, and a second bending drive device. The frame has a laterally extending support platform. The tool holder is movably mounted on the frame and positioned above the support platform. The tool head is mounted on the tool holder and moves back and forth with it, located directly above the support platform. The tool drive device is mounted on the tool holder and drives it to move back and forth. The bending frame is movably mounted on the frame and positioned beside the support platform; the bending frame has a C-shaped structure. Two bending cutters are symmetrically arranged on the bending frame and move back and forth with it. The first bending drive device is mounted on the frame and drives the bending frame to move back and forth. The device includes a first drive assembly, a first eccentric shaft, and a first transmission rod assembly. The first drive assembly is mounted on a frame, and the first eccentric shaft is located at the output end of the first drive assembly and is driven to rotate back and forth by the first drive assembly. One end of the first transmission rod assembly is hinged to the first eccentric shaft, and the other end of the first transmission rod assembly is hinged to a bending frame. A second bending drive device is mounted on the frame and cooperates with the first bending drive device to drive the bending frame to complete the bending action. The second bending drive device includes a second drive assembly, a second eccentric shaft, and a second transmission rod assembly. The second drive assembly is mounted on the frame. The second eccentric shaft is located at the output end of the second drive assembly and is driven to rotate back and forth by the second drive assembly. One end of the second transmission rod assembly is hinged to the second eccentric shaft and moves back and forth with the second eccentric shaft, and the other end of the second transmission rod assembly is hinged to the bending frame.

[0007] As a preferred embodiment, the tool driving device includes a third driving assembly, a third eccentric shaft, and a third transmission rod assembly. The third driving assembly is mounted on the tool holder. The third eccentric shaft is connected to the output end of the third driving assembly and is driven to rotate back and forth by the third driving assembly. The upper end of the third transmission rod assembly is hinged to the third eccentric shaft and is driven to move back and forth by the third eccentric shaft. The lower end of the third transmission rod assembly is hinged to the frame.

[0008] As a preferred embodiment, the bending frame has a through hole for the third transmission rod assembly to pass through, and the lower end of the third transmission rod assembly extends downward through the through hole and is hinged to the frame.

[0009] As a preferred embodiment, the tool drive devices are two horizontally spaced devices, which simultaneously drive the tool holder to move up and down.

[0010] As a preferred embodiment, the lower end of the bending frame is connected to the machine frame via a hydraulic telescopic rod assembly, which consists of two horizontally symmetrically arranged hydraulic telescopic rod assemblies.

[0011] As a preferred embodiment, the first drive assembly includes a first servo motor and a first reducer. The input end of the first reducer is connected to the output end of the first servo motor, and the first eccentric shaft is connected to the output end of the first reducer and drives the first eccentric shaft to rotate back and forth through the first reducer.

[0012] As a preferred embodiment, the first transmission rod assembly includes a first connecting rod, a second connecting rod, and a connecting shaft; one end of the first connecting rod is hinged to a first eccentric shaft; one end of the second connecting rod is hinged to the other end of the first connecting rod; the connecting shaft is hinged to the other end of the second connecting rod, and the connecting shaft is provided with two horizontally arranged hinge members, which are respectively hinged to the bending frame.

[0013] As a preferred embodiment, the second drive assembly includes a second servo motor and a second reducer, the input end of which is connected to the output end of the second servo motor; the second eccentric shaft is connected to the output end of the second reducer and is driven by the second reducer to move back and forth.

[0014] As a preferred embodiment, the second drive assembly consists of two symmetrically arranged horizontally, with the output ends of the two second drive assemblies connected to the two ends of the second eccentric shaft, respectively. Correspondingly, the second transmission rod assemblies also consist of two horizontally spaced assemblies, with one end of each second transmission rod assembly connected to the second eccentric shaft and the other end of each second transmission rod assembly hinged to the bending frame.

[0015] Compared with the prior art, the present invention has obvious advantages and beneficial effects. Specifically, as can be seen from the above technical solution:

[0016] The bending mechanism is mounted on the frame via a first bending drive device, which drives the bending frame to move back and forth. The first bending drive device includes a first drive assembly, a first eccentric shaft, and a first transmission rod assembly. A second bending drive device, also mounted on the frame and working in conjunction with the first bending drive device, drives the bending frame to complete the bending action. The second bending drive device includes a second drive assembly, a second eccentric shaft, and a second transmission rod assembly. This allows the bending frame to bend in two directions via the eccentric shaft drive. Compared to the traditional screw drive method, this not only offers a faster response speed and higher bending accuracy, but also allows for a wider range of bending angles. Furthermore, the cooperation between the first and second eccentric shafts enables bending at various angles, thus meeting more processing requirements.

[0017] To more clearly illustrate the structural features and effects of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0018] Figure 1This is a three-dimensional structural schematic diagram of a preferred embodiment of the present invention;

[0019] Figure 2 This is a partial assembly diagram of a preferred embodiment of the present invention;

[0020] Figure 3 This is another partial assembly schematic diagram of a preferred embodiment of the present invention;

[0021] Figure 4 This is another partial assembly schematic diagram of a preferred embodiment of the present invention.

[0022] Explanation of reference numerals in the attached diagram:

[0023] 10. Frame 11. Support Platform

[0024] 20. Tool holder; 30. Tool head

[0025] 40. Tool drive unit; 41. Third drive assembly

[0026] 42. Third eccentric shaft; 43. Third transmission rod assembly

[0027] 50. Bending frame; 501. Through hole

[0028] 51. Hydraulic telescopic rod assembly; 60. Bending cutter head

[0029] 70. First bending drive device; 71. First drive assembly

[0030] 711. First servo motor; 712. First reducer

[0031] 72. First eccentric shaft; 73. First transmission rod assembly

[0032] 731. First connecting rod; 732. Second connecting rod

[0033] 733, Connecting shaft; 734, Hinge component

[0034] 80. Second bending drive device 81. Second drive assembly

[0035] 811. Second servo motor; 812. Second reducer

[0036] 82. Second eccentric shaft; 83. Second transmission rod assembly. Detailed Implementation

[0037] Please refer to Figures 1 to 4 As shown, it illustrates the specific structure of a preferred embodiment of the present invention, including a frame 10, a tool holder 20, a tool head 30, a tool drive device 40, a bending frame 50, a bending cutter head 60, a first bending drive device 70, and a second bending drive device 80.

[0038] The frame 10 has a laterally extending support platform 11.

[0039] The tool holder 20 is movable up and down on the frame 10 and located above the support platform 11.

[0040] The cutting head 30 is mounted on the tool holder 20 and moves up and down with the tool holder 20. The cutting head 30 is located directly above the support table 11. The cutting head 30 is used to clamp the product to be processed by cooperating with the support table 11.

[0041] The tool drive device 40 is mounted on the tool holder 20 and drives the tool holder 20 to move up and down. In this embodiment, the tool drive device 40 includes a third drive assembly 41, a third eccentric shaft 42, and a third transmission rod assembly 43. The third drive assembly 41 is mounted on the tool holder 20. The third eccentric shaft 42 is connected to the output end of the third drive assembly 41 and is driven to rotate back and forth by the third drive assembly 41. The upper end of the third transmission rod assembly 43 is hinged to the third eccentric shaft 42 and is driven to move back and forth by the third eccentric shaft 42. The lower end of the third transmission rod assembly 43 is hinged to the frame 10. There are two tool drive devices 40 arranged laterally at intervals. The two tool drive devices 40 simultaneously drive the tool holder 20 to move up and down. The two tool drive devices 40 are used to ensure the smoothness of the up and down movement of the tool holder 20 and prevent left and right tilting.

[0042] The bending frame 50 is movably mounted on the frame 10 and located beside the support platform 11. The bending frame 50 has a C-shaped structure. In this embodiment, the bending frame 50 has a through hole 501 for the third transmission rod assembly 43 to pass through. The lower end of the third transmission rod assembly 43 extends downward through the through hole 501 and is hinged to the frame 10. The lower end of the bending frame 50 is connected to the frame 10 by a hydraulic telescopic rod assembly 51. There are two hydraulic telescopic rod assemblies 51 arranged laterally symmetrically. The hydraulic telescopic rod assemblies 51 are used to support the bending frame 50, thereby reducing the transmission pressure of the first bending drive device 70 and the second bending drive device 80, and further ensuring the transmission accuracy.

[0043] There are two bending cutter heads 60, which are symmetrically arranged on the bending frame 50 and move back and forth with the bending frame 50. The bending cutter heads 60 are used to bend the pressed product.

[0044] The first bending drive device 70 is mounted on the frame 10 and drives the bending frame 50 to move back and forth. The first bending drive device 70 includes a first drive assembly 71, a first eccentric shaft 72, and a first transmission rod assembly 73. The first drive assembly 71 is mounted on the frame 10. The first eccentric shaft 72 is located at the output end of the first drive assembly 71 and is driven by the first drive assembly 71 to rotate back and forth. One end of the first transmission rod assembly 73 is hinged to the first eccentric shaft 72, and the other end of the first transmission rod assembly 73 is hinged to the bending frame 50. In this embodiment, the first drive assembly 71 includes a first servo motor 711 and a first reducer 712. The input end of 2 is connected to the output end of the first servo motor 711, and the first eccentric shaft 72 is connected to the output end of the first reducer 712 and drives the first eccentric shaft 72 to rotate back and forth through the first reducer 712; the first transmission rod assembly 73 includes a first connecting rod 731, a second connecting rod 732 and a connecting shaft 733; one end of the first connecting rod 731 is hinged to the first eccentric shaft 72; one end of the second connecting rod 732 is hinged to the other end of the first connecting rod 731; the connecting shaft 733 is hinged to the other end of the second connecting rod 732, and two horizontally arranged hinge members 734 are provided on the connecting shaft 733, and the two hinge members 734 are respectively hinged to the bending frame 50.

[0045] The second bending drive device 80 is mounted on the frame 10 and cooperates with the first bending drive device 70 to drive the bending frame 50 to complete the bending action. The second bending drive device 80 includes a second drive assembly 81, a second eccentric shaft 82, and a second transmission rod assembly 83. The second drive assembly 81 is mounted on the frame 10. The second eccentric shaft 82 is located at the output end of the second drive assembly 81 and is driven by the second drive assembly 81 to rotate back and forth. One end of the second transmission rod assembly 83 is hinged to the second eccentric shaft 82 and moves back and forth with the second eccentric shaft 82, while the other end of the second transmission rod assembly 83 is hinged to the bending frame 50. By using the eccentric shaft transmission method instead of the existing screw transmission method, it not only has a faster response speed and higher transmission accuracy, but also allows the bending frame 50 to have more bending angles through the cooperation of the first eccentric shaft 72 and the second eccentric shaft 82, which can meet more processing requirements. In this embodiment... The second drive assembly 81 includes a second servo motor 811 and a second reducer 812. The input end of the second reducer 812 is connected to the output end of the second servo motor 811. The second eccentric shaft 82 is connected to the output end of the second reducer 812 and is driven by the second reducer 812 to move back and forth. There are two second drive assemblies 81 arranged laterally symmetrically. The output ends of the two second drive assemblies 81 are respectively connected to the two ends of the second eccentric shaft 82. Correspondingly, there are also two second transmission rod assemblies 83 arranged laterally at intervals. One end of the two second transmission rod assemblies 83 is respectively connected to the second eccentric shaft 82, and the other end of the two second transmission rod assemblies 83 is respectively hinged to the bending frame 50. The two second transmission assemblies 81 and the two transmission rod assemblies 83 are used to increase the vertical support force of the second bending drive device 80 on the bending frame 50, further ensuring the stability and accuracy of the bending process.

[0046] The key design feature of this invention is that a first bending drive device is mounted on the frame and drives the bending frame to move back and forth. The first bending drive device includes a first drive assembly, a first eccentric shaft, and a first transmission rod assembly. A second bending drive device is mounted on the frame and works in conjunction with the first bending drive device to drive the bending frame to complete the bending action. The second bending drive device includes a second drive assembly, a second eccentric shaft, and a second transmission rod assembly. This allows the bending frame to complete the bending process in two directions via the eccentric shaft transmission method. Compared to the traditional screw drive method, this not only results in a faster response speed and higher bending accuracy, but also allows for a wider range of bending angles. Furthermore, the cooperation between the first and second eccentric shafts enables bending processes at more different angles, thus meeting a wider range of processing requirements.

[0047] The above description is merely a preferred embodiment of the present invention and does not constitute any limitation on the technical scope of the present invention. Therefore, any minor modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention shall still fall within the scope of the technical solution of the present invention.

Claims

1. A bending center with a new type of transmission mechanism, characterized in that: The utility model provides a bending machine, including organic frame, tool holder, tool head, tool driving device, bending frame, bending tool head, first bending driving device and second bending driving device, the frame has a transversely extended support table, the tool holder can go up and down and go back and forth to be set on the frame and be located above the support table, the tool head sets up on the tool holder and goes back and forth with the tool holder, and the tool head is located directly above the support table, the tool driving device sets up on the tool holder and drives the tool holder to go back and forth, the bending frame can go back and forth to be set on the frame and be located on the side of the support table, and the bending frame is C type structure, the bending tool head is two settings, and two bending tool heads are symmetrically set on the bending frame and go back and forth with the bending frame, the first bending driving device sets up on the frame and drives the bending frame to go back and forth, and the first bending driving device includes first drive assembly, first eccentric shaft and first transmission rod assembly, the first drive assembly sets up on the frame, the first eccentric shaft sets up on the output of first drive assembly and is driven by first drive assembly to rotate back and forth, one end of first transmission rod assembly is hinged with first eccentric shaft, and the other end of first transmission rod assembly is hinged with bending frame, the second bending driving device sets up on the frame and cooperates with first bending driving device to drive the bending frame to complete bending action, and the second bending driving device includes second drive assembly, second eccentric shaft and second transmission rod assembly, the second drive assembly sets up on the frame, the second eccentric shaft sets up on the output of second drive assembly and is driven by second drive assembly to rotate back and forth, and one end of second transmission rod assembly is hinged with second eccentric shaft and goes back and forth with second eccentric shaft, and the other end of second transmission rod assembly is hinged with bending frame.

2. The bending center with a new type of transmission mechanism according to claim 1, characterized in that: The tool driving device includes a third drive assembly, a third eccentric shaft, and a third transmission rod assembly. The third drive assembly is arranged on the tool holder. The third eccentric shaft is connected with the output end of the third drive assembly and is driven by the third drive assembly to rotate back and forth. The upper end of the third transmission rod assembly is hinged with the third eccentric shaft and is driven by the third eccentric shaft to move back and forth. The lower end of the third transmission rod assembly is hinged with the frame.

3. The bending center with a new type of transmission mechanism according to claim 2, characterized in that: A through hole is formed in the bending frame for the third transmission rod assembly to pass through. The lower end of the third transmission rod assembly extends downward through the through hole and is hinged with the frame.

4. The bending center with a new type of transmission mechanism according to claim 1, characterized in that: The tool driving device is arranged in two horizontal intervals. The two tool driving devices simultaneously drive the tool holder to move back and forth.

5. The bending center with a new type of transmission mechanism according to claim 1, characterized in that: A hydraulic telescopic rod assembly is connected between the lower end of the bending frame and the frame. The hydraulic telescopic rod assembly is arranged in two horizontal symmetries.

6. The bending center with a new type of transmission mechanism according to claim 1, characterized in that: The first drive assembly includes a first servo motor and a first speed reducer. The input end of the first speed reducer is connected with the output end of the first servo motor. The first eccentric shaft is connected with the output end of the first speed reducer and is driven by the first speed reducer to rotate back and forth.

7. The bending center with a new type of transmission mechanism according to claim 1, characterized in that: The first transmission rod assembly comprises a first connecting rod, a second connecting rod and a connecting shaft; one end of the first connecting rod is hingedly connected with the first eccentric shaft; one end of the second connecting rod is hingedly connected with the other end of the first connecting rod; the connecting shaft is hingedly connected with the other end of the second connecting rod, and two hinged parts arranged transversely are arranged on the connecting shaft and hingedly connected with the bending frame.

8. The bending center with a new type of transmission mechanism according to claim 1, characterized in that: The second drive assembly comprises a second servo motor and a second speed reducer, and the input end of the second speed reducer is connected with the output end of the second servo motor; the second eccentric shaft is connected with the output end of the second speed reducer and driven by the second speed reducer to move back and forth.

9. The bending center with a new type of transmission mechanism according to claim 1, characterized in that: The second drive assembly is horizontally symmetrically arranged in two, the output ends of the two second drive assemblies are respectively connected with the two ends of the second eccentric shaft, and correspondingly, the second transmission rod assembly is also horizontally spaced arranged in two, one end of the two second transmission rod assemblies is respectively connected with the second eccentric shaft, and the other end of the two second transmission rod assemblies is respectively hingedly connected with the bending frame.

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