Oil-electric hybrid numerical control bending machine

Abstract

The utility model provides an oil-electricity hybrid numerical control bending machine, which belongs to the technical field of bending machines, and comprises a rack assembly, the rack assembly comprises two side frames, a top frame, a lower knife rest table, a stabilizing frame and an upper knife rest are arranged between the two side frames, an anti-bulging driving mechanism is arranged on the top frame, and the anti-bulging driving mechanism comprises a first screw rod and a first gear, the first gear is connected with a second gear in a meshed mode, a second lead screw is arranged on the second gear, a second nut seat is arranged on the second lead screw, two push rods and a pressing block are arranged on the lower side of the second nut seat, and the pressing block is located in the middle of the steel plate. By means of the device, a thin steel plate can be rapidly pressed and bent, speed reduction is not needed, the working efficiency of pressing and bending is improved, meanwhile, slight bulging of the middle of the thin steel plate is avoided, it is guaranteed that a crease line on the steel plate and the upper edge of the lower tool rest are located in the same plane, and the precision of a bent piece is improved.

Description

Technical Field

[0001] The utility model mainly relates to the technical field of bending machines, in particular to an oil-electric hybrid CNC bending machine. Background Art

[0002] A press brake is a machine tool used to bend or form metal. It is commonly used to manufacture sheet metal parts such as boxes, housings, brackets and panels for industrial or consumer products. It is widely used in industries such as automotive, aerospace, agriculture and construction. The working principle of a press brake is to compress the metal sheet by applying pressure between two opposing dies to bend it into the desired angle. The design of the machine allows precise control of the angle, depth and width of the bend. The press brake can be highly versatile and provides precision that cannot be matched by manual bending processes. It can bend metal quickly and efficiently, making it suitable for mass production.

[0003] Among the currently available bending machines, the upper tool holders of some bending machines are driven downward by driving devices located on both sides. When pressurizing and bending steel plates, for thinner steel plates, the downward speed of the upper tool holder will be slowed down in advance. Since the rigidity of thin steel plates is low, they are prone to deformation when subjected to external forces. When pressurized, there is not enough support or clamping force in the middle of the steel plate, which sometimes causes the middle part of the steel plate to bulge slightly, forming a "dome" shape. At the same time, the bulging of the middle part will cause the bending angles at both ends and the middle part of the steel plate to be inconsistent, resulting in a positional offset between the crease line on the steel plate and the upper edge of the lower tool holder, affecting the accuracy of the bent parts, especially thinner steel plates. However, pressurizing thin steel plates by decelerating the speed greatly reduces the factory's processing efficiency and increases energy consumption costs. Utility Model Content

[0004] The technical solution of the present invention is aimed at the technical problem that the existing technical solution is too single, and provides a solution that is significantly different from the existing technology. Specifically, the present invention mainly provides an oil-electric hybrid CNC bending machine to solve the technical problem proposed in the above background technology that the bending machine currently drives the tool holder to move downward by the driving devices on both sides of the upper tool holder cannot quickly bend the thin steel plate, easily causes bulging in the middle of the thin steel plate, and affects the accuracy of the bent parts.

[0005] The technical solution adopted by the utility model to solve the above technical problems is:

[0006] The gear train is equipped with a gear that is adapted to move the gears of the driven pulleys toward the gear train, and the gear train is equipped with a gear that is adapted to move the gears of the driven pulleys toward the gear train.

[0007] Furthermore, a first nut seat is provided on the first screw rod, and pulling frames are provided on both sides of the outer wall of the first nut seat. A sliding sleeve is provided on each pulling frame, and each sliding sleeve is slidably connected to a column, and the upper end of the column is connected to the lower side of the top frame.

[0008] Furthermore, each of the sliding sleeves is connected to the upper tool holder via a bolt.

[0009] Furthermore, a bracket is installed on the lower side of the top frame through bolts, and the upper side of the bracket is rotatably connected to the lower ends of the first screw rod and the second screw rod respectively.

[0010] Furthermore, a support frame is provided on the inner wall of each side frame, and the upper side of the support frame is connected to the lower end of the corresponding column.

[0011] Furthermore, a servo motor is provided at the circular hole position of the top frame, and the output end of the servo motor is connected to the upper end of the first screw rod.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] The utility model realizes that the bending machine does not need to slow down during the processing by arranging the frame assembly, the first screw rod, the first nut seat, the first gear, the second screw rod, the second gear, the push rod, the servo motor and the second nut seat. The bending machine can quickly perform pressurized bending on thin steel plates just like processing thick steel plates, thereby improving the working efficiency of pressurized bending. Before the upper tool holder contacts the steel plate, the pressure block will first be pressed on the middle position of the thin steel plate, avoiding slight bulging of the middle part of the thin steel plate, ensuring that the crease line on the steel plate and the upper edge of the lower tool holder are in the same plane, improving the accuracy of the bent parts, and having a stable structure and convenient operation, and having certain application prospects and value.

[0014] The present invention will be explained in detail below with reference to the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the overall structure of the utility model;

[0017] Figure 3 This is a schematic structural diagram of the anti-drum driving mechanism of the utility model;

[0018] Figure 4 This is a schematic diagram of the side frame structure of the present utility model.

[0019] In the figure: 1. Frame assembly; 11. Side frame; 111. Support frame; 12. Top frame; 13. Stabilizing frame; 14. Lower tool holder; 15. Upper tool holder; 2. Anti-drum driving mechanism; 21. First screw rod; 211. First nut seat; 22. First gear; 23. Second screw rod; 231. Second nut seat; 24. Second gear; 25. Push rod; 26. Pressure block; 27. Pulling frame; 28. Sliding sleeve; 281. Column; 29. ​​Bracket; 3. Crease line of thin steel plate; 4. Servo motor. DETAILED DESCRIPTION

[0020] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings, but the present invention can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, these embodiments are provided to make the content disclosed in the present invention more thorough and comprehensive.

[0021] It should be noted that when an element is referred to as being "fixed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this article are for illustrative purposes only.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly used by technicians in the technical field of the present invention. The terminology used in the specification of the present invention is for the purpose of describing specific embodiments and is not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0023] Please refer to the attached Figure 1-4A hybrid CNC bending machine includes a frame assembly 1, the frame assembly 1 includes two parallel side frames 11, a top frame 12, a lower tool holder platform 14 and a stabilizing frame 13 are arranged between the two side frames 11, and an upper tool holder 15 is arranged above the lower tool holder platform 14, an anti-drum driving mechanism 2 is arranged on the top frame 12, and the anti-drum driving mechanism 2 includes a first screw rod 21, and a first gear 22 is arranged at the upper end of the first screw rod 21, and the first gear 22 has teeth on half a circle and no teeth on half a circle, and the first The gear 22 is meshedly connected with the second gear 24, and a second screw rod 23 is provided on the second gear 24. The threaded section of the second screw rod 23 is located at the bottom, and the length of the threaded section of the second screw rod 23 is smaller than the length of the threaded section of the first screw rod 21. The threads on the two screw rods are in opposite directions. A second nut seat 231 is provided on the second screw rod 23, and two push rods 25 are provided on the lower side of the second nut seat 231. The lower ends of the two push rods 25 are jointly provided with a pressure block 26, and the pressure block 26 is located in the middle position of the steel plate.

[0024] Through the above structure, the bending machine can quickly pressurize and bend the thin steel plate during the processing without slowing down, thereby improving the working efficiency of pressurization and bending, and avoiding slight bulging of the middle part of the thin steel plate, ensuring that the crease line 3 of the thin steel plate and the upper edge of the lower tool holder are in the same plane, thereby improving the accuracy of the bent parts, and the structure is stable and easy to operate, which has certain application prospects and value.

[0025] The specific operation is as follows: first, the thin steel plate is placed on the lower tool holder 14 so that the folding line 3 of the thin steel plate is aligned with the upper edge position of the lower tool holder 14, and then the servo motor 4 is turned on, followed by the first screw rod 21 rotating, and at the same time, the first gear 22 drives the second gear 24 to rotate, and the second gear 24 drives the second screw rod 23 to rotate synchronously, and the upper tool holder 15 and the pressure block 26 move downward at the same time. Since the threaded section of the second screw rod 23 is at the bottom of the second screw rod 23, and the threaded section height of the second screw rod 23 is lower than the threaded section height of the first screw rod 21, the pressure block 26 will first contact the thin steel plate and press on the middle position of the upper surface of the thin steel plate. Since the first gear 22 has teeth for half a circle and no teeth for half a circle, the teeth are disengaged between the first gear 22 and the second gear 24, and the second screw rod 23 does not rotate, and the first screw rod 21 continues to rotate the second half circle, and the upper tool holder 15 continues to move downward, and in cooperation with the lower tool holder 14, the steel plate is bent, and then the servo motor 4 drives the screw rod to reverse and reset.

[0026] Please refer to the attached Figure 1 and attached Figure 3, a first nut seat 211 is provided on the first screw rod 21, and a pulling frame 27 is provided on both sides of the outer wall of the first nut seat 211, and a sliding sleeve 28 is provided on each of the pulling frames 27, and each of the sliding sleeves 28 is slidably connected to a column 281, and the upper end of the column 281 is connected to the lower side of the top frame 12, and the upper tool holder 15 is driven to move downward stably through the cooperation between the sliding sleeve 28 and the column 281. Each of the sliding sleeves 28 is connected to the upper tool holder 15 by bolts, and the bolt connection facilitates the replacement of the upper tool holder 15 after the upper tool holder 15 is excessively worn. A bracket 29 is installed on the lower side of the top frame 12 by bolts, and the upper side of the bracket 29 is rotatably connected to the lower ends of the first screw rod 21 and the second screw rod 23 respectively. Through the bracket 29, a stable supporting force is provided for the first screw rod 21 and the second screw rod 23.

[0027] Please refer to the attached Figure 1 and attached Figure 4 A support frame 111 is provided on the inner wall of each side frame 11, and the upper side of the support frame 111 is connected to the lower end of the corresponding column 281. Through the support frame 111, an upward supporting force is provided to the column 281, thereby improving stability. A servo motor 4 is provided at the circular hole position of the top frame 12, and the output end of the servo motor 4 is connected to the upper end of the first screw rod 21. Through the servo motor 4, a driving force is provided for the rotation of the first screw rod 21 and the second screw rod 23.

[0028] The above description of the present invention is illustrative in combination with the accompanying drawings. It is obvious that the specific implementation of the present invention is not limited to the above-mentioned method. As long as such non-substantial improvements are made by adopting the method concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the scope of protection of the present invention.

Claims

1. A hybrid CNC bending machine, comprising a frame assembly (1), wherein the frame assembly (1) comprises two parallel side frames (11), a top frame (12), a lower tool holder platform (14) and a stabilizing frame (13) are arranged between the two side frames (11), and an upper tool holder (15) is arranged above the lower tool holder platform (14), characterized in that: An anti-drum driving mechanism (2) is provided on the top frame (12), and the anti-drum driving mechanism (2) includes a first screw rod (21), a first gear (22) is provided at the upper end of the first screw rod (21), and the first gear (22) has teeth for half a circle and no teeth for half a circle, the first gear (22) is meshed with a second gear (24), a second screw rod (23) is provided on the second gear (24), the thread section of the second screw rod (23) is located at the bottom, and the length of the thread section of the second screw rod (23) is smaller than the length of the thread section of the first screw rod (21), a second nut seat (231) is provided on the second screw rod (23), and two push rods (25) are provided on the lower side of the second nut seat (231), and a pressure block (26) is provided at the lower end of the two push rods (25), and the pressure block (26) is located in the middle of the steel plate.

2. The hybrid CNC bending machine according to claim 1, characterized in that: A first nut seat (211) is provided on the first screw rod (21), and pulling frames (27) are provided on both sides of the outer wall of the first nut seat (211), and each pulling frame (27) is provided with a sliding sleeve (28), and each sliding sleeve (28) is slidably connected to a column (281), and the upper end of the column (281) is connected to the lower side of the top frame (12).

3. The hybrid CNC bending machine according to claim 2, characterized in that: Each of the sliding sleeves (28) is connected to the upper tool holder (15) via a bolt.

4. The hybrid CNC bending machine according to claim 2, characterized in that: A bracket (29) is mounted on the lower side of the top frame (12) via bolts, and the upper side of the bracket (29) is rotatably connected to the lower ends of the first screw rod (21) and the second screw rod (23), respectively.

5. The hybrid CNC bending machine according to claim 1, characterized in that: A support frame (111) is provided on the inner wall of each side frame (11), and the upper side of the support frame (111) is connected to the lower end of the corresponding column (281).

6. The hybrid CNC bending machine according to claim 4, characterized in that: A servo motor (4) is provided at the circular hole position of the top frame (12), and the output end of the servo motor (4) is connected to the upper end of the first screw rod (21).

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