Automatic machining control system of bending machine

Abstract

The utility model discloses an automatic processing control system of a bending machine, which relates to the technical field of bending machines, comprises a bending machine body and two groups of conveying mechanisms, and is characterized in that the two groups of conveying mechanisms are arranged on one side of the bending machine body at intervals; the bending machine further comprises a material supporting mechanism arranged on one side of the bending machine body and located between the two conveying mechanisms and a clamp mechanism arranged in the bending machine body. Through the material supporting mechanism arranged on one side of the bending machine body, the problems that after a bending arc reaches a certain degree, the gravity center of a plate deviates, and the plate swings in the machining and feeding process are solved, the positioning accuracy is ensured, through the clamp mechanism arranged on the inner wall of the bending machine, the positioning accuracy is further improved, and the machining efficiency is improved. Workpiece machining precision is guaranteed, personnel safety risks are reduced, and production efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of bending machine technology, specifically to an automatic processing control system for bending machines. Background Technology

[0002] A bending machine is a machine capable of bending thin plates. It mainly consists of a platform, a pressure plate, and a cylinder. The cylinder drives the pressure plate to move vertically, thereby bending the sheet metal on the platform. It is relatively easy to operate and has high processing efficiency. Currently, bending machines are widely used in heavy industry enterprises to achieve sheet metal bending processing.

[0003] In the production and processing of metal sheets, human intervention is often required. When the sheet is special, lightweight, and small in size, a slippage may occur when the feeding trolley is positioned, resulting in poor positioning accuracy. Therefore, after feeding, manual pushing of the sheet and manual alignment are required. Processing can only proceed after accurate alignment. Furthermore, when processing curved workpieces, the center of gravity begins to deviate after the bending arc reaches a certain degree, causing the sheet to sway during processing and feeding. The workpiece cannot be positioned accurately, and an overhead crane is needed to hold the workpiece. This not only fails to achieve fully automated functions but also poses certain risks to the operator's safety. Utility Model Content

[0004] The purpose of this utility model is to provide an automatic processing control system for bending machines, which aims to solve the problems of insufficient positioning accuracy and inability to achieve automation in the above-mentioned background technology.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an automatic processing control system for a bending machine, comprising a bending machine body and a conveying mechanism. The conveying mechanism is provided in two sets and spaced apart on one side of the bending machine body. It also includes a material support mechanism located on one side of the bending machine body and between the two sets of conveying mechanisms, and a clamping mechanism located inside the bending machine body. The material support mechanism includes a support frame, a support plate, a first material support plate, a second material support plate, a first hydraulic rod, and a second hydraulic rod. The support plate is horizontally arranged on the support frame and has a rectangular opening at the center of one end away from the bending machine body. The first material support plate is hinged in the opening through a support pivot pin. The other end of the first material support plate is hinged to one end of the second material support plate. The other end of the first material support plate extends downward at an angle and is provided with a mounting frame. The telescopic end of the first hydraulic rod is hinged to the bottom end of the first material support plate, and the fixed end of the first hydraulic rod is hinged to the support frame. The fixed end of the second hydraulic rod is hinged to the mounting frame, and the telescopic end is hinged to the bottom end of the second material support plate.

[0006] Furthermore, the clamping mechanism includes a third hydraulic rod, a base that slides with the inner wall of the bending machine body, and a fourth hydraulic rod. The third hydraulic rod is horizontally arranged on the inner wall of the bending machine body and its telescopic end is fixedly connected to the base. The base includes a horizontal plate and a vertical plate connected together. A guide post is provided at the top of the horizontal plate. The fourth hydraulic rod is vertically arranged and fixedly connected to the side of the vertical plate away from the third hydraulic rod. A clamping plate is fixedly connected to the telescopic end of the fourth hydraulic rod. A through hole is provided on the clamping plate and the through hole slides with the outer surface of the guide post.

[0007] Furthermore, the conveying mechanism includes a support frame, a conveying platform, conveying rollers, a conveying motor, and a conveying belt. The conveying platform is horizontally arranged on the top of the support frame. Both ends of the several conveying rollers are movably installed on the inner wall of the conveying platform. The conveying motor is fixedly installed on one side of the conveying platform and its output end is fixedly connected to the input end of the conveying rollers. The surface of the several conveying rollers is rotatably connected to the conveying belt, and the outer surface of the conveying belt is raised to form anti-slip stripes.

[0008] Furthermore, the lower die base of the bending machine body is equipped with a laser angle detector for detecting the bending angle.

[0009] Furthermore, a linear displacement sensor for detecting the extension and retraction of the second hydraulic rod is provided on one side of the second hydraulic rod.

[0010] This utility model has the following beneficial effects:

[0011] This utility model provides an automatic processing control system for a bending machine. By using a material support mechanism located on one side of the bending machine body, it solves the problem of the plate's center of gravity shifting when the bending arc reaches a certain degree, causing swaying during processing and feeding. This ensures the accuracy of positioning. Furthermore, the clamping mechanism located on the inner wall of the bending machine further improves the accuracy of positioning, guarantees the precision of workpiece processing, reduces personnel safety risks, and improves production efficiency. Attached Figure Description

[0012] Figure 1 This is a structural cross-sectional view of the material support mechanism in this utility model;

[0013] Figure 2 This is a schematic diagram of the clamping mechanism of this utility model;

[0014] Figure 3 This is a schematic diagram of the overall lateral structure of this utility model;

[0015] In the diagram: 1. Bending machine body; 2. Support frame; 3. Support plate; 4. First support plate; 5. Second support plate; 6. First hydraulic rod; 7. Second hydraulic rod; 8. Third hydraulic rod; 9. Base; 10. Fourth hydraulic rod; 11. Guide column; 12. Clamping plate; 13. Conveyor table; 14. Conveyor roller; 15. Conveyor motor; 16. Conveyor belt. Detailed Implementation

[0016] like Figures 1 to 3 As shown, an automatic processing control system for a bending machine includes a bending machine body 1 and a conveying mechanism. The main bending machine system uses the Dutch DELEM DA66SP CNC system for bending machines as a programmable controller. The auxiliary systems, such as the conveying mechanism and the material handling mechanism, use Siemens S7-1500 series PLCs with PROFINET network interfaces as programmable controllers. Network communication and collaborative operation between the PLCs and the auxiliary units are achieved through an Ethernet switch. The conveying mechanism has two sets arranged at intervals on one side of the bending machine body 1. It also includes a material handling mechanism located on one side of the bending machine body 1 between the two sets of conveying mechanisms and a clamping mechanism located inside the bending machine body 1. The material support mechanism includes a support frame 2, a support plate 3, a first material support plate 4, a second material support plate 5, a first hydraulic rod 6, and a second hydraulic rod 7. The support plate 3 is horizontally mounted on the support frame 2 and has a rectangular opening at the center of the end away from the bending machine body 1. The first material support plate 4 is hinged in the opening through a support pivot pin. The other end of the first material support plate 4 is hinged to one end of the second material support plate 5. The other end of the first material support plate 4 extends downward at an angle and is provided with a mounting bracket. The telescopic end of the first hydraulic rod 6 is hinged to the bottom end of the first material support plate 4, and the fixed end of the first hydraulic rod 6 is hinged to the support frame 2. The fixed end of the second hydraulic rod 7 is hinged to the mounting bracket, and the telescopic end is hinged to the bottom end of the second material support plate 5.

[0017] The clamping mechanism includes a third hydraulic rod 8, a base 9 that slides with the inner wall of the bending machine body 1, and a fourth hydraulic rod 10. The third hydraulic rod 8 is horizontally arranged on the inner wall of the bending machine body 1 and its telescopic end is fixedly connected to the base 9. The base 9 includes a horizontal plate and a vertical plate connected together. A guide post 11 is provided at the top of the horizontal plate. The fourth hydraulic rod 10 is vertically arranged and fixedly connected to the side of the vertical plate away from the third hydraulic rod 8. A clamping plate 12 is fixedly connected to the telescopic end of the fourth hydraulic rod 10. A through hole is provided on the clamping plate 12 and the through hole slides with the outer surface of the guide post 11. The clamping plate 12 cooperates with the horizontal plate to form a clamp and is used to clamp the plate.

[0018] The conveying mechanism includes a support frame 2, a conveying platform 13, conveying rollers 14, a conveying motor 15, and a conveying belt 16. The conveying platform 13 is horizontally arranged on the top of the support frame 2. Both ends of the conveying rollers 14 are movably installed on the inner wall of the conveying platform. The conveying motor 15 is fixedly installed on one side of the conveying platform 13 and its output end is fixedly connected to the input end of the conveying rollers 14. The conveying belt 16 is rotatably connected to the surface of the conveying rollers 14. The outer surface of the conveying belt 16 has raised anti-slip stripes.

[0019] The lower die base of the bending machine body 1 is equipped with a laser angle detector for detecting bending angles. In order to ensure that the bending angle is qualified, a laser angle detection mechanism is added. During the processing, the operator does not need to frequently measure the bending angle, which affects the processing efficiency. When the detected angle does not reach the qualified degree, the bending machine bends again until the workpiece degree is qualified.

[0020] A linear displacement sensor is provided on one side of the second hydraulic rod 7 to detect the extension and retraction of the second hydraulic rod 7, and the corresponding material support position is automatically located by the linear displacement sensor.

[0021] The specific operation process of this utility model is as follows:

[0022] The sheet metal to be processed is conveyed to the feeding platform of the bending machine body 1 by the conveyor belt 16 and the conveyor roller 14, and the sheet metal is conveyed to the predetermined position. When the sheet metal is not positioned accurately, the detection switch on the bending machine body 1 and located on the stop head cannot sense the sheet metal, which will trigger the hydraulic valve to control the extension of the third hydraulic rod 8 in the clamping mechanism. The lower surface of the clamping plate 12 at the extension end of the fourth hydraulic rod 10 cooperates with the upper surface of the horizontal plate of the base 9 to clamp the sheet metal and return it, so that the edge of the sheet metal is tightly abutted against the stop head. At this time, the detection switch senses the sheet metal and starts the bending assembly to bend. When the bending pressure block of the bending machine contacts the sheet metal, the fourth hydraulic rod 10 in the clamping device retracts, releases the sheet metal and returns. Return to original position; after the workpiece is bent, the surface of the formed workpiece is scanned by a laser angle measuring instrument. If the bending angle is not qualified, the bending machine bends again until the angle is within the qualified range before proceeding to the next bending process; when the center of gravity of the workpiece is halfway through processing, the material support mechanism is activated. According to the shape of the workpiece in the horizontal and vertical directions, the position of the material support is calculated using trigonometric functions. The actual position is detected by a linear displacement sensor. After the data values ​​are calibrated on the human-machine interface, the automatic material support function can be achieved by controlling the extension and retraction of the first hydraulic rod 6 and the second hydraulic rod 7 during the bending process to support the bent sheet metal and ensure accurate positioning.

Claims

1. An automatic processing control system for a bending machine, comprising a bending machine body (1) and a conveying mechanism, characterized in that: The conveying mechanism is provided in two sets and is arranged at intervals on one side of the bending machine body (1). It also includes a material support mechanism located on one side of the bending machine body (1) and between the two sets of conveying mechanisms, and a clamping mechanism located inside the bending machine body (1). The material support mechanism includes a support frame (2), a support plate (3), a first material support plate (4), a second material support plate (5), a first hydraulic rod (6), and a second hydraulic rod (7). The support plate (3) is horizontally arranged on the support frame (2) and has a rectangular groove at the center of one end away from the bending machine body (1). The opening is shaped, and a first support plate (4) is hinged inside the opening by a support pivot. The other end of the first support plate (4) is hinged to one end of the second support plate (5). The other end of the first support plate (4) extends downward at an angle and is provided with a mounting bracket. The telescopic end of the first hydraulic rod (6) is hinged to the bottom end of the first support plate (4). The fixed end of the first hydraulic rod (6) is hinged to the support bracket (2). The fixed end of the second hydraulic rod (7) is hinged to the mounting bracket and the telescopic end is hinged to the bottom end of the second support plate (5).

2. The automatic processing control system for a bending machine according to claim 1, characterized in that, The clamping mechanism includes a third hydraulic rod (8), a base (9) that slides with the inner wall of the bending machine body (1), and a fourth hydraulic rod (10). The third hydraulic rod (8) is horizontally arranged on the inner wall of the bending machine body (1) and its telescopic end is fixedly connected to the base (9). The base (9) includes a horizontal plate and a vertical plate connected together. The top of the horizontal plate is provided with a guide post (11). The fourth hydraulic rod (10) is vertically arranged and fixedly connected to the side of the vertical plate away from the third hydraulic rod (8). The telescopic end of the fourth hydraulic rod (10) is fixedly connected to a clamping plate (12). The clamping plate (12) has a through hole and the through hole slides with the outer surface of the guide post (11).

3. The automatic processing control system for a bending machine according to claim 1, characterized in that, The conveying mechanism includes a support frame (2), a conveying platform (13), conveying rollers (14), a conveying motor (15), and a conveyor belt (16). The conveying platform (13) is horizontally arranged on the top of the support frame (2). Both ends of the conveying rollers (14) are movably installed on the inner wall of the conveying platform. The conveying motor (15) is fixedly installed on one side of the conveying platform (13) and its output end is fixedly connected to the input end of the conveying rollers (14). The conveyor belt (16) is rotatably connected to the surface of the conveying rollers (14). The outer surface of the conveyor belt (16) is raised to form anti-slip stripes.

4. The automatic processing control system for a bending machine according to claim 1, characterized in that, The lower die base of the bending machine body (1) is equipped with a laser angle detector for detecting bending angle.

5. The automatic processing control system for a bending machine according to claim 1, characterized in that, A linear displacement sensor for detecting the extension and retraction of the second hydraulic rod (7) is provided on one side of the second hydraulic rod (7).

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