A bending auxiliary device for a numerical control bending machine

Abstract

The utility model relates to a kind of bending auxiliary devices for numerical control bending machine, including workbench and the die set, driving device and movable die of being arranged on workbench, the side of die set and movable die on workbench is equipped with positioning baffle by being arranged on the third driving mechanism of workbench upper surface, the third driving mechanism is used to drive positioning baffle to carry out left-right translation adjustment, the other side of die set and movable die is arranged with first driving mechanism above workbench. The utility model utilizes second driving mechanism to drive two positioning clamps to be close to each other and clamp workpiece, ensure workpiece and die set to be close to positioning, utilize third driving mechanism to work and drive positioning baffle to move to predetermined position, by first driving mechanism work drives the workpiece being clamped to be close to positioning baffle side, until end and positioning baffle are close to positioning, so that the position of workpiece and die set and movable die alignment is the required bending part, realize the positioning placement of workpiece.

Description

Technical Field

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

[0002] A CNC bending machine is a device that uses computer numerical control technology to bend metal sheets. By inputting set programs and parameters, it automatically completes the bending operation to achieve high-precision and high-efficiency metal forming. CNC bending machines are typically equipped with hydraulic systems, electric servo systems, and precision sensors, enabling them to handle complex bending tasks and are widely used in metal processing, machinery manufacturing, and other fields in the manufacturing industry.

[0003] As per the instruction manual Figure 6 As shown, this is a CNC bending machine in the prior art. It has a contact die, an extrusion die, and a drive device on the worktable. The workpiece is placed between the contact die and the extrusion die, and the drive device drives the extrusion die to move closer to the contact die, so that the workpiece can be extruded and bent. However, the above-mentioned CNC bending machine cannot position the workpiece during use. The bending part is positioned by pre-drawing the bending line on the workpiece and aligning the bending line with the die. This positioning method is not accurate enough and easily affects the dimensional accuracy of the workpiece bending process. Utility Model Content

[0004] The purpose of this invention is to provide a bending auxiliary device for CNC bending machines that can improve the dimensional accuracy of workpiece bending, effectively solving the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution.

[0006] A bending auxiliary device for a CNC bending machine includes a worktable and a fixed die, a driving device, and a moving die arranged on the worktable. A positioning baffle is provided on one side of the fixed die and the moving die via a third driving mechanism arranged on the surface of the worktable. The third driving mechanism is used to drive the positioning baffle to move left and right. A first driving mechanism is arranged above the worktable on the other side of the fixed die and the moving die. A second driving mechanism is arranged on the first driving mechanism. Two positioning clamps extending towards the fixed die are symmetrically arranged on the side of the second driving mechanism. The first driving mechanism is used to drive the second driving mechanism and the positioning clamps to move left and right as a whole. The second driving mechanism is used to drive the two positioning clamps to move closer to each other or further away from each other.

[0007] Therefore, by using the second driving mechanism to drive the two positioning clamps to move closer together and clamp the workpiece, ensuring that the workpiece is closely positioned against the fixed mold, the third driving mechanism drives the positioning baffle to move to the predetermined position, and the first driving mechanism drives the clamped workpiece to move closer to one side of the positioning baffle until the end is closely positioned against the positioning baffle, so that the position on the workpiece aligned with the fixed mold and the moving mold is the required bending part, the workpiece is positioned and placed, ensuring accurate positioning at the bending point, improving the bending forming quality and accuracy of the workpiece, and the bending processing yield is higher than that of traditional positioning methods.

[0008] Furthermore, the first drive mechanism includes a power guide rail and a movable seat. The power guide rail is fixed above the worktable, and the movable seat is mounted on the power guide rail and can be adjusted to move left and right. The second drive mechanism is arranged on top of the movable seat.

[0009] Furthermore, the second drive mechanism includes a guide seat, a bidirectional threaded rod, a drive motor, and a pair of nut seats. The guide seat is fixed to the top of the movable seat and has a guide groove. The bidirectional threaded rod is rotatably installed in the guide groove. The drive motor is fixed to one end of the guide seat, and its output shaft extends through into the guide groove and is fixedly connected to one end of the bidirectional threaded rod. The two nut seats are symmetrically limited and slidably installed in the guide groove and are threadedly fitted onto both sides of the bidirectional threaded rod. Two positioning clamps are fixed to the sides of the two nut seats one to one.

[0010] Furthermore, when the two positioning clamps come close to each other and clamp the workpiece, the workpiece can fit against the contact surface of the fixed mold.

[0011] Furthermore, the third drive mechanism includes a fixed base and an electric push cylinder. The electric push cylinder is fixed above the worktable by the fixed base, and the positioning baffle is fixed to the end of the telescopic rod of the electric push cylinder.

[0012] Furthermore, a controller is also provided above the workbench, and a second micro-touch switch is embedded in the positioning baffle. The second micro-touch switch is flush with the positioning surface of the positioning baffle, and both the second micro-touch switch and the drive device are electrically connected to the controller.

[0013] Furthermore, a mounting plate is fixed to the side of the moving mold, and a first micro-touch switch is arranged on the front side of the mounting plate. The first micro-touch switch is electrically connected to the controller. When the extrusion part of the moving mold contacts the workpiece, the workpiece contacts the first micro-touch switch to trigger the first micro-touch switch to work.

[0014] Furthermore, the mounting plate is provided with a through hole running from front to back, and a guide rod is slidably installed through the through hole. The first micro-touch switch is installed on the front end of the guide rod, and a spring is sleeved on the outside of the guide rod. One end of the spring is fixed to the surface of the mounting plate, and the other end is fixed to the first micro-touch switch.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows.

[0016] This invention utilizes a second driving mechanism to drive two positioning clamps to move closer together and clamp the workpiece, ensuring that the workpiece is tightly positioned against the fixed mold. A third driving mechanism moves the positioning baffle to a predetermined position, and the first driving mechanism moves the clamped workpiece closer to one side of the positioning baffle until its end is tightly positioned against the positioning baffle. This ensures that the position on the workpiece aligned with the fixed mold and the moving mold is the desired bending part, achieving precise positioning of the workpiece and ensuring accurate positioning at the bending point. This improves the bending forming quality and precision of the workpiece, resulting in a higher yield rate for bending processing compared to traditional positioning methods. Attached Figure Description

[0017] Figure 1 This is one of the three-dimensional schematic diagrams of the overall structure of this utility model;

[0018] Figure 2 for Figure 1 Enlarged schematic diagram of the structure at point A in the middle;

[0019] Figure 3 This is the second three-dimensional schematic diagram of the overall structure of this utility model;

[0020] Figure 4 for Figure 3 Enlarged schematic diagram of the structure at point B;

[0021] Figure 5 This is a schematic diagram of the first and second drive mechanisms in this utility model;

[0022] Figure 6 This is a schematic diagram of the structure of a CNC bending machine in the prior art.

[0023] In the diagram: 01. Fixed mold; 02. Drive device; 03. Moving mold; 031. Mounting plate; 0311. Guide hole; 032. Guide rod; 033. First micro-touch switch; 034. Spring; 1. Worktable; 2. First drive mechanism; 21. Power guide rail; 22. Moving seat; 3. Second drive mechanism; 31. Guide seat; 311. Guide groove; 32. Bidirectional threaded rod; 33. Drive motor; 34. Nut seat; 4. Positioning clamp; 5. Third drive mechanism; 51. Fixed seat; 52. Electric push cylinder; 6. Positioning baffle; 61. Second micro-touch switch; 7. Controller. Detailed Implementation

[0024] 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.

[0025] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connection" and "installation" should be interpreted broadly. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. Furthermore, "connection" can be a direct connection or an indirect connection through an intermediate medium. "Fixed" means that the relative positional relationship remains unchanged after the connection. The directional terms mentioned in the embodiments of this utility model, such as "inner," "outer," "top," and "bottom," are only for reference to the directions in the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of this utility model, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model.

[0026] In this embodiment of the invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" and "second" may explicitly or implicitly include one or more of that feature.

[0027] Please see Figures 1-5 This utility model provides a bending auxiliary device for a CNC bending machine, including a worktable 1 and a fixed mold 01, a driving device 02, and a moving mold 03 arranged on the worktable 1. On one side of the fixed mold 01 and the moving mold 03, a positioning baffle 6 is provided by a third driving mechanism 5 arranged on the upper surface of the worktable 1. The third driving mechanism 5 is used to drive the positioning baffle 6 to move left and right. On the other side of the fixed mold 01 and the moving mold 03, a first driving mechanism 2 is arranged above the worktable 1. A second driving mechanism 3 is arranged on the first driving mechanism 2. Two positioning clamps 4, both extending towards one side of the fixed mold 01, are symmetrically arranged on the side of the second driving mechanism 3. The first driving mechanism 2 is used to drive the second driving mechanism 3 and the positioning clamps 4 to move left and right as a whole. The second driving mechanism 3 is used to drive the two positioning clamps 4 to move closer to each other or further away from each other.

[0028] When using the bending auxiliary device of this CNC bending machine to perform positioning and bending processing on a workpiece, the workpiece is placed on the worktable 1, ensuring that it passes between the drive device 02 and the moving mold 03. Then, the second drive mechanism 3 operates, driving the two positioning clamps 4 to move closer to each other until the workpiece is clamped and positioned. When the two positioning clamps 4 move closer to each other and clamp the workpiece, the workpiece can fit against the contact surface of the fixed mold 01, ensuring that the workpiece is tightly positioned against the fixed mold 01. Then, the third drive mechanism 5 operates to push the positioning baffle 6 to the required position. Next, the first drive mechanism 2 operates to drive the second drive mechanism 3, the positioning clamps 4, and the workpiece as a whole to move towards the positioning baffle 6 until the end of the workpiece away from the first drive mechanism 2 is close to the positioning baffle 6, thus achieving the positioning and placement of the workpiece. At this time, the position on the workpiece that aligns with the fixed mold 01 and the moving mold 03 is the bending part.

[0029] After the workpiece is positioned, the driving device 02 pushes the moving mold 03 closer to the fixed mold 01. By using the cooperation of the fixed mold 01 and the moving mold 03, the workpiece can be positioned and bent into shape.

[0030] This invention utilizes a second driving mechanism 3 to drive two positioning clamping plates 4 to move closer together and clamp the workpiece, ensuring that the workpiece is tightly positioned against the fixed mold 01. A third driving mechanism 5 drives the positioning baffle 6 to move to a predetermined position. The first driving mechanism 2 drives the clamped workpiece to move closer to the positioning baffle 6 until its end is tightly positioned against the positioning baffle 6. This ensures that the position on the workpiece aligned with the fixed mold 01 and the moving mold 03 is the desired bending part, achieving precise positioning of the workpiece and improving the bending forming quality and accuracy of the workpiece. Compared with traditional positioning methods, the yield rate of bending processing is higher.

[0031] Specifically, the first drive mechanism 2 includes a power guide rail 21 and a movable seat 22. The power guide rail 21 is fixed above the worktable 1, and the movable seat 22 is mounted on the power guide rail 21 and can be adjusted to move left and right. The second drive mechanism 3 is arranged on the top of the movable seat 22. Through the operation of the power guide rail 21, it can drive the movable seat 22 to move left and right, providing drive for the translation adjustment of the second drive mechanism 3, the positioning clamp 4 and the clamped workpiece.

[0032] Specifically, the second drive mechanism 3 includes a guide seat 31, a bidirectional threaded rod 32, a drive motor 33, and a pair of nut seats 34. The guide seat 31 is fixed to the top of the movable seat 22 and has a guide groove 311. The bidirectional threaded rod 32 is rotatably installed in the guide groove 311. The drive motor 33 is fixed to one end of the guide seat 31, and its output shaft extends through into the guide groove 311 and is fixedly connected to one end of the bidirectional threaded rod 32. The two nut seats 34 are symmetrically limited and slidably installed in the guide groove 311 and are threadedly fitted onto both sides of the bidirectional threaded rod 32. The two positioning clamps 4 are fixed to the sides of the two nut seats 34 one to one. The bidirectional threaded rod 32 is driven to rotate by the drive motor 33. The rotating bidirectional threaded rod 32 can drive the two nut seats 34 to slide closer or further apart in the guide groove 311, providing drive for the clamping and releasing actions of the two positioning clamps 4.

[0033] Specifically, the third drive mechanism 5 includes a fixed base 51 and an electric push cylinder 52. The electric push cylinder 52 is fixed above the worktable 1 by the fixed base 51. The positioning baffle 6 is fixed on the end of the telescopic rod of the electric push cylinder 52. When the electric push cylinder 52 works, the end of its telescopic rod can drive the positioning baffle 6 to move left and right, thereby realizing the position adjustment of the positioning baffle 6.

[0034] Specifically, a controller 7 is also provided above the workbench 1, and a second micro-touch switch 61 is embedded in the positioning baffle 6. The second micro-touch switch 61 is flush with the positioning surface of the positioning baffle 6. The second micro-touch switch 61 and the drive device 02 are both electrically connected to the controller 7. When the end of the workpiece away from the second drive mechanism 3 comes into contact with the surface of the positioning baffle 6 and is positioned, the workpiece contacts the second micro-touch switch 61, triggering the second micro-touch switch 61 to work and send a control signal to the controller 7. The controller 7 then controls the drive device 02 to work, driving the moving mold 03 to move closer to the fixed mold 01 until the moving mold 03 and the fixed mold 01 cooperate to clamp the workpiece.

[0035] A mounting plate 031 is fixed to the side of the moving mold 03. A first micro-touch switch 033 is arranged on the front side of the mounting plate 031. The first micro-touch switch 033 is electrically connected to the controller 7. When the extrusion part of the moving mold 03 contacts the workpiece, the workpiece contacts the first micro-touch switch 033 to trigger the first micro-touch switch 033 to work. In addition, the power guide rail 21, the electric push cylinder 52, and the drive motor 33 are all electrically connected to the controller 7. When the moving mold 03 moves closer to the fixed mold 01 until it clamps the workpiece, the workpiece contacts the first micro-touch switch 033, triggering the first micro-touch switch 033 to work and send a signal to the controller 7. The signal is controlled by the controller 7 to operate the power guide rail 21, drive the moving seat 22 and drive the second drive mechanism 3 to slide and reset to the side away from the positioning baffle 6. At the same time, the controller 7 controls the drive motor 33 to drive the bidirectional threaded rod 32 to rotate, causing the two nut seats 34 to move away from each other, thereby releasing the workpiece. Simultaneously, the controller 7 drives the electric push cylinder 52 to retract and reset, thereby driving the positioning baffle 6 to move and reset to the side away from the first drive mechanism 2. This allows the positioning clamp 4 and the positioning baffle 6 to be removed outside the bending station range, avoiding obstruction and interference to the bending changes of the workpiece during bending.

[0036] Specifically, the mounting plate 031 has a through-hole 0311, through which a guide rod 032 is slidably installed. A first micro-switch 033 is mounted on the front end of the guide rod 032. A spring 034 is sleeved on the outside of the guide rod 032. One end of the spring 034 is fixed to the surface of the mounting plate 031, and the other end is fixed to the first micro-switch 033. After the moving mold 03 and the fixed mold 01 clamp the workpiece, during subsequent bending processing, the workpiece will move against the first micro-switch. 033 causes excessive compression. When the workpiece is subjected to excessive compression, it can move backward with the guide rod 032. At this time, the spring 034 is compressed, which provides a buffer protection effect for the first micro-touch switch 033, preventing the first micro-touch switch 033 from being damaged due to excessive pressure. After the pressure on the first micro-touch switch 033 disappears, the spring 034 elastically resets, pushing the guide rod 032 and the first micro-touch switch 033 to move forward and reset, ensuring that the contact surface of the first micro-touch switch 033 is flush with the extrusion part surface of the moving mold 03 again.

[0037] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A bending auxiliary device for a CNC bending machine, comprising a worktable (1) and a fixed die (01), a driving device (02), and a moving die (03) arranged on the worktable (1), characterized in that: On one side of the workbench (1) located between the fixed mold (01) and the moving mold (03), a positioning baffle (6) is provided by a third drive mechanism (5) arranged on the upper surface of the workbench (1). The third drive mechanism (5) is used to drive the positioning baffle (6) to move left and right for adjustment. A first drive mechanism (2) is arranged above the workbench (1) on the other side of the fixed mold (01) and the moving mold (03). A second drive mechanism (3) is arranged on the first drive mechanism (2). Two positioning clamps (4) that extend toward the fixed mold (01) are symmetrically arranged on the side of the second drive mechanism (3). The first driving mechanism (2) is used to drive the second driving mechanism (3) and the positioning clamp (4) to move left and right as a whole. The second driving mechanism (3) is used to drive the two positioning clamps (4) to move closer to each other or further away from each other.

2. The bending auxiliary device for a CNC bending machine according to claim 1, characterized in that: The first drive mechanism (2) includes a power guide rail (21) and a movable seat (22); The power guide rail (21) is fixed above the workbench (1), and the movable seat (22) is installed on the power guide rail (21) and can be adjusted left and right. The second drive mechanism (3) is arranged on top of the movable seat (22).

3. A bending auxiliary device for a CNC bending machine according to claim 2, characterized in that: The second drive mechanism (3) includes a guide seat (31), a bidirectional threaded rod (32), a drive motor (33), and a pair of nut seats (34); The guide seat (31) is fixed on the top of the movable seat (22), and the guide seat (31) is provided with a guide groove (311). The bidirectional threaded rod (32) is rotatably installed in the guide groove (311). The drive motor (33) is fixed to one end of the guide seat (31), and the output shaft extends through into the guide groove (311) and is fixedly connected to one end of the bidirectional threaded rod (32). The two nut seats (34) are symmetrically and slidably installed in the guide groove (311) and threadedly fitted on both sides of the bidirectional threaded rod (32); The two positioning clamps (4) are fixed to the sides of the two nut seats (34) in a one-to-one correspondence.

4. The bending auxiliary device for a CNC bending machine according to claim 1, characterized in that: When the two positioning clamps (4) come close to each other and clamp the workpiece, the workpiece can fit against the contact surface of the fixed mold (01).

5. A bending auxiliary device for a CNC bending machine according to claim 1, characterized in that: The third drive mechanism (5) includes a fixed base (51) and an electric push cylinder (52); The electric push cylinder (52) is fixed above the workbench (1) by the fixed seat (51), and the positioning baffle (6) is fixed on the end of the telescopic rod of the electric push cylinder (52).

6. A bending auxiliary device for a CNC bending machine according to claim 1, characterized in that: A controller (7) is also provided above the workbench (1), and a second micro-touch switch (61) is embedded on the positioning baffle (6). The second micro-touch switch (61) is flush with the positioning surface of the positioning baffle (6). The second micro-touch switch (61) and the drive device (02) are both electrically connected to the controller (7).

7. A bending auxiliary device for a CNC bending machine according to claim 6, characterized in that: The moving mold (03) is fixed with a mounting plate (031) on its side, and a first micro-touch switch (033) is arranged on the front side of the mounting plate (031). The first micro-touch switch (033) is electrically connected to the controller (7); When the extrusion part of the moving mold (03) comes into contact with the workpiece, the workpiece comes into contact with the first micro-touch switch (033) to trigger the first micro-touch switch (033) to work.

8. A bending auxiliary device for a CNC bending machine according to claim 7, characterized in that: The mounting plate (031) is provided with a through hole (0311) that runs from front to back. A guide rod (032) is slidably installed in the through hole (0311). The first micro-touch switch (033) is installed on the front end of the guide rod (032). A spring (034) is sleeved on the outside of the guide rod (032). One end of the spring (034) is fixed to the surface of the mounting plate (031), and the other end is fixed to the first micro-touch switch (033).

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