Numerical control machining bending machine

Abstract

The utility model discloses a numerical control machining bending machine which comprises an upper die and a lower die, the lower die is installed on a bending machine body, the upper die is installed on the bending machine body through a hydraulic cylinder, a supporting plate is located on the front side of the lower die, the top end of the supporting plate is flush with the top end of the lower die, a sliding groove is formed in the supporting plate, and a limiting plate is arranged in the sliding groove in a sliding mode. According to the numerical control machining bending machine, the supporting plate is connected with the fixing rod through the mounting rod, the circle center of the fixing rod is located on the extension line of the bending point of the metal plate, the multiple clamped metal plates can be turned upwards synchronously by pushing the supporting plate, the multiple metal plates can be bent at a time, the working efficiency is improved, operation is easy, and the machining precision is high. Manual assistance of metal plate forming by personnel is not needed, operation steps are reduced, and the working efficiency is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of bending machine technology, specifically a CNC bending machine. Background Technology

[0002] CNC bending machines use equipped molds (general or special molds) to bend cold metal sheets into workpieces with various geometric cross-sectional shapes. They are sheet metal forming machines designed for cold-rolled sheet metal processing and are widely used in sheet metal bending processing in industries such as automobiles, aircraft manufacturing, light industry, shipbuilding, containers, elevators, and railway vehicles.

[0003] In the current operating procedures of CNC bending machines, operators need to manually and precisely place the sheet metal onto the lower die of the CNC bending machine, and then activate the hydraulic cylinder to drive the upper die downward to achieve the bending operation of the sheet metal until the predetermined angle is reached. However, this traditional processing method has significant drawbacks. During the bending process, in order to ensure the accurate forming of the sheet metal, the operator needs to assist the metal sheet with both hands throughout the process. This means that the equipment can only process a single metal sheet in a single run. This processing mode is not only time-consuming and labor-intensive, greatly limiting the output per unit time, but also seriously slows down the overall processing and production pace, making it difficult to meet the urgent needs of modern high-efficiency production. Utility Model Content

[0004] The purpose of this utility model is to provide a CNC bending machine to solve the problem mentioned in the background art that current bending machines on the market require manual assistance to shape metal sheets into a specified shape during the bending process.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a CNC bending machine, comprising an upper die and a lower die, the lower die being mounted on the bending machine body, the upper die being mounted on the bending machine body via a hydraulic cylinder, a support plate being located in front of the lower die, the top of the support plate being flush with the top of the lower die, a sliding groove being provided on the support plate, and a limiting plate being slidably provided inside the sliding groove.

[0006] Preferably, a fixing rod is installed at the end of the lower mold, and a moving groove is opened at the end of the fixing rod away from the lower mold. An installation rod slides inside the moving groove, and the other end of the installation rod is fixed to the end of the support plate.

[0007] Preferably, the mounting rod has a "U" shaped structure, the fixing rod has an arc-shaped structure, and the center of the fixing rod is on the extension line of the bending point of the metal plate.

[0008] Preferably, a servo motor is installed at the bottom end of the limiting plate near the fixed rod, and a threaded rod is installed at the output end of the servo motor.

[0009] Preferably, a connecting plate is installed at the bottom of the limiting plate, and the connecting plate is threadedly connected to the threaded rod, with the moving distance of two adjacent connecting plates differing by twice the spacing.

[0010] Preferably, the upper mold is located directly above the lower mold, and the metal sheet is clamped between two adjacent limiting plates.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] The support plate is connected to the fixing rod via a mounting rod. The center of the fixing rod is on the extension line of the bending point of the metal sheet. By pushing the support plate, multiple clamped metal sheets can be flipped upwards simultaneously, allowing multiple metal sheets to be bent at once, improving work efficiency. The operation is relatively simple. The moving distance of two adjacent connecting plates differs by twice the spacing, thus keeping the two adjacent connecting plates the same. There is no need to adjust the position of each connecting plate. Multiple metal sheets can be clamped at once without the need for manual assistance in forming the metal sheets, reducing operation steps and greatly improving work efficiency. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0014] Figure 2 This is a three-dimensional structural diagram of the support plate of this utility model;

[0015] Figure 3 This is a bottom view of the support plate structure of this utility model;

[0016] Figure 4 This is a schematic diagram of the limiting plate structure of this utility model;

[0017] Figure 5 This utility model Figure 2 Enlarged structural diagram at point A in the middle.

[0018] In the diagram: 1. Bending machine body; 2. Upper die; 3. Lower die; 4. Servo motor; 5. Limiting plate; 6. Support plate; 7. Fixing rod; 8. Slide groove; 9. Connecting plate; 10. Moving groove; 11. Mounting rod; 12. Threaded rod. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figures 1-5 The present invention provides the following technical solution:

[0021] A CNC bending machine includes an upper die 2 and a lower die 3. The lower die 3 is mounted on the bending machine body 1, and the upper die 2 is mounted on the bending machine body 1 via a hydraulic cylinder. A support plate 6 is located in front of the lower die 3, and the top of the support plate 6 is flush with the top of the lower die 3. A sliding groove 8 is provided on the support plate 6, and a limiting plate 5 is slidably provided inside the sliding groove 8. A servo motor 4 is installed at the bottom end of the limiting plate 5 near the fixed rod 7, and a threaded rod 12 is installed at the output end of the servo motor 4. A connecting plate 9 is installed at the bottom end of the limiting plate 5, and the connecting plate 9 is threadedly connected to the threaded rod 12. The moving distance of two adjacent connecting plates 9 differs by 2 times the distance between them.

[0022] The metal sheet is placed on the lower mold 3. When placing the metal sheet, the part of the metal sheet to be bent is placed directly below the cutter of the upper mold 2. The cutting position of the upper mold 2 is located at the center line of the lower mold 3. At the same time, it is necessary to ensure that the two sides of the metal sheet can be clamped by the limiting plates 5. The distance between the two adjacent limiting plates 5 is adjusted according to the width of the metal sheet. The servo motor 4 is started in the forward direction. The operation of the servo motor 4 causes the forward threaded rod 12 to rotate. The forward rotation of the threaded rod 12 causes the limiting plates 5 and the connecting plates 9 to move. Due to the thread on the threaded rod 12, the movement distance of each limiting plate 5 is different. The movement distance of the two adjacent connecting plates 9 differs by 2 times the distance. At the same time, the distance between the two connecting plates 9 gradually increases. When the distance between the two adjacent connecting plates 9 is greater than the width of the metal sheet, the width of the metal sheet is placed between the two adjacent limiting plates 5. Then, the servo motor 4 is started in the reverse direction. The threaded rod 12 rotates in the reverse direction, causing the distance between the two connecting plates 9 to gradually decrease until the limiting plates 5 move and clamp the two sides of the metal sheet. By setting the threaded rod 12, multiple metal sheets can be clamped at the same time, improving work efficiency.

[0023] A fixing rod 7 is installed at the end of the lower mold 3. A moving groove 10 is opened at the end of the fixing rod 7 away from the lower mold 3. An installation rod 11 slides inside the moving groove 10. The other end of the installation rod 11 is fixed to the end of the support plate 6. The installation rod 11 has a "U" shaped structure. The fixing rod 7 has an arc-shaped structure. The center of the fixing rod 7 is on the extension line of the bending point of the metal sheet. The upper mold 2 is located directly above the lower mold 3. The metal sheet is clamped between two adjacent limiting plates 5.

[0024] The hydraulic cylinder moves the upper die 2 downwards, bending the metal sheet into the required angle. During bending, the support plate 6 is pushed upwards by hand, causing the metal sheet held by the limiting plate 5 to rotate upwards. Since the support plate 6 is fixed to the mounting rod 11, the mounting rod 11 slides on the fixed rod 7. The center of the fixed rod 7 is on the extension line of the bending point of the metal sheet. Therefore, when the support plate 6 rotates upwards, the flip point is the bending point of the metal sheet, which will not affect the normal bending of the metal sheet and prevent the bending position of the metal sheet from shifting. During the upward rotation of the support plate 6, the mounting rod 11 moves synchronously. The other end of the mounting rod 11 slides inside the moving groove 10. The bending of the metal sheet is achieved through the setting of the fixed rod 7. Multiple metal sheets can be bent at one time, greatly improving work efficiency.

[0025] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A CNC bending machine, comprising an upper die (2) and a lower die (3), wherein the lower die (3) is mounted on the bending machine body (1), and the upper die (2) is mounted on the bending machine body (1) via a hydraulic cylinder, characterized in that, The support plate (6) is located in front of the lower mold (3). The top of the support plate (6) is flush with the top of the lower mold (3). A groove (8) is provided on the support plate (6), and a limiting plate (5) is slidably provided inside the groove (8).

2. The CNC bending machine according to claim 1, characterized in that: A fixing rod (7) is installed at the end of the lower mold (3). A moving groove (10) is opened at the end of the fixing rod (7) away from the lower mold (3). An installation rod (11) slides inside the moving groove (10). The other end of the installation rod (11) is fixed to the end of the support plate (6).

3. A CNC bending machine according to claim 2, characterized in that: The mounting rod (11) has a "U" shaped structure, and the fixing rod (7) has an arc-shaped structure. The center of the fixing rod (7) is on the extension line of the bending point of the metal plate.

4. A CNC bending machine according to claim 1, characterized in that: A servo motor (4) is installed at the bottom end of the limiting plate (5) near the fixed rod (7), and a threaded rod (12) is installed at the output end of the servo motor (4).

5. A CNC bending machine according to claim 1, characterized in that: The bottom end of the limiting plate (5) is equipped with a connecting plate (9), which is threadedly connected to the threaded rod (12). The moving distance of two adjacent connecting plates (9) differs by 2 times the spacing.

6. A CNC bending machine according to claim 1, characterized in that: The upper mold (2) is located directly above the lower mold (3), and the metal sheet is clamped between two adjacent limiting plates (5).

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