Numerically controlled bending machine with a guide mechanism

Abstract

The utility model provides a numerical control bending machine with guide mechanism relates to numerical control bending machine technical field, include: bending machine body, the bending machine body table is installed with lower mould, the upper mould is provided with on the lower mould upper end, the lower mould and upper mould front end symmetry distribution limit left clamping plate and limit right clamping plate, the limit left clamping plate and limit right clamping plate side end are connected with guide cylinder through fixed post, the limit left clamping plate and limit right clamping plate lower end are connected with double -threaded screw rod through drive block, the double -threaded screw rod right side end axle has connected with motor, the limit left clamping plate and limit right clamping plate back side all are fixed with L type material stop plate, the L type material stop plate side end embedding installation has pressure sensor. The utility model solves the problem that the bending steel plate of existing technology in bending one side plate body will bend, and the problem that the bending steel plate is separated from the feeding frame and affects the bending guide processing effect.

Description

Technical Field

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

[0002] CNC bending machines use equipped molds (general or special molds) to bend cold metal sheets into workpieces of 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 processes in industries such as automobiles, aircraft manufacturing, light industry, shipbuilding, containers, elevators, and railway vehicles. A search revealed existing technology (Announcement No.: CN202420757652.9) of a CNC bending machine with a guiding mechanism. The document describes how "the user first starts the first motor according to the width of the steel plate, which drives the positive and negative screws to rotate. When the positive and negative screws rotate, they are connected to the positive and negative threads of two feeding frames to adjust the distance between the two feeding frames, thus limiting the feeding of steel plates of different widths. When the two..." After adjusting the spacing between the feeding racks to a suitable size, the user places the steel plate to be bent on the upper surface of the two feeding racks. Then, by activating the two cylinders, the two guide clamps are moved closer to the sides of the steel plate to limit its position and prevent it from shifting during the feeding process. After that, the user only needs to push the steel plate forward to position it in the middle of the lower and upper molds. The rotating rollers inside the two feeding racks make it easy for the user to push the steel plate. However, in the existing technology, one side of the steel plate may bend and warp during bending, causing the bent steel plate to detach from the feeding rack and affecting the bending guidance processing effect. Utility Model Content

[0003] To overcome the shortcomings of existing technologies, a CNC bending machine with a guiding mechanism is provided to solve the problem that in existing technologies, one side of the steel plate will bend and warp during bending, causing the bent steel plate to detach from the feeding rack and affecting the bending guiding processing effect.

[0004] To achieve the above objectives, a CNC bending machine with a guiding mechanism is provided, comprising: a bending machine body, a lower die mounted on the table surface of the bending machine body, and an upper die disposed at the upper end of the lower die.

[0005] The lower mold and the upper mold are symmetrically distributed with a left limiting clamping plate and a right limiting clamping plate at their front ends. The left and right limiting clamping plates are connected to guide rollers by fixing columns at their side ends. The lower ends of the left and right limiting clamping plates are connected to double threaded screws by driving blocks. A motor is axially connected to the right end of the double threaded screws. An L-shaped abutment plate is fixed to the rear side of both the left and right limiting clamping plates. A pressure sensor is embedded in the side end of the L-shaped abutment plate.

[0006] Furthermore, the upper end of the bending machine body is connected to a mold support via a hydraulic mechanism, an upper mold is installed on the lower end face of the mold support, and a material stop mechanism is assembled on the rear side of the lower mold.

[0007] Furthermore, the rear side of the mold support is slidably connected to the bending machine body via a lifting frame, and a CNC cabinet is provided on the left side of the bending machine body.

[0008] Furthermore, a fixing plate is welded to the front end face of the bending machine body, and double threaded screws are installed between the fixing plates via bearings. A motor is fixed to the right end face of the fixing plate.

[0009] Furthermore, the double-threaded screw face is provided with two sets of reverse threads, and the lower ends of the left limiting clamp and the right limiting clamp are fixed to the drive block by fastening bolts.

[0010] Furthermore, a fixing post is inserted and screwed into the inner side of the left and right limiting clamps, and a guide block is fixed to the side end of the left and right limiting clamps.

[0011] Furthermore, the rear section of the L-shaped abutment plate contacts the front surface of the lower mold via auxiliary balls, and the upper surface of the lower mold is fitted with the L-shaped abutment plate.

[0012] The beneficial effects of this utility model are as follows: The CNC bending machine with a guiding mechanism of this utility model utilizes a limiting left clamping plate, a limiting right clamping plate, a guide roller, a double threaded screw, and an L-shaped abutment plate to form a bending guiding mechanism. The rotation of the double threaded screw drives the guide roller, which is sleeved between the limiting left clamping plate and the limiting right clamping plate, to roll and clamp the side of the steel plate. When the steel plate is tilted up between the limiting clamping plates during the bending process, the L-shaped abutment plate resists the side end of the steel plate at the mold, forming a limiting guide for the bent and tilted steel plate. This effectively prevents the steel plate from deviating or failing during multiple bending processes, facilitates precise auxiliary guidance of the steel plate bending path, ensures accurate bending positioning of the CNC bending machine, and improves the bending processing effect of the CNC bending machine. Attached Figure Description

[0013] Figure 1 This is a front view structural diagram of a CNC bending machine with a guiding mechanism according to an embodiment of the present invention.

[0014] Figure 2 This is a partial side view of the connection structure of the guide mechanism according to an embodiment of the present invention.

[0015] Figure 3 This is a side view of the guide mechanism according to an embodiment of the present invention.

[0016] Figure 4 This is a top view of the guide mechanism according to an embodiment of the present invention.

[0017] In the diagram: 1. Bending machine body; 11. Hydraulic mechanism; 12. Lifting frame; 13. Material blocking mechanism; 14. Fixing plate; 2. Lower mold; 3. Upper mold; 31. Mold support; 4. CNC cabinet; 5. Left limiting clamping plate; 51. Right limiting clamping plate; 52. Guide roller; 53. Fixing column; 54. Guide block; 55. Fastening bolt; 6. Double threaded screw; 61. Drive block; 62. Motor; 7. L-shaped abutment plate; 71. Pressure sensor; 72. Auxiliary ball bearing. Detailed Implementation

[0018] Reference Figures 1 to 4 As shown, this utility model provides a CNC bending machine with a guiding mechanism, including: a bending machine body 1, a lower die 2 mounted on the table of the bending machine body 1, and an upper die 3 disposed on the upper end of the lower die 2.

[0019] The lower mold 2 and the upper mold 3 are symmetrically distributed with a left limiting clamping plate 5 and a right limiting clamping plate 51 at their front ends. The left limiting clamping plate 5 and the right limiting clamping plate 51 are connected to guide rollers 52 by fixing posts 53 at their side ends. The lower ends of the left limiting clamping plate 5 and the right limiting clamping plate 51 are connected to a double threaded screw 6 by a drive block 61. The right side end of the double threaded screw 6 is connected to a motor 62. The rear sides of the left limiting clamping plate 5 and the right limiting clamping plate 51 are both fixed with L-shaped abutment plates 7. The side ends of the L-shaped abutment plates 7 are embedded with pressure sensors 71.

[0020] First, the steel plate is manually placed on the upper surface of the lower die 2 of the bending machine body 1. The CNC cabinet 4 controls the material blocking mechanism 13 to move to a suitable position, so that the material blocking mechanism 13 abuts against the rear end face of the steel plate. At this time, the double threaded screw 6 rotates to drive the left limiting clamp 5 and the right limiting clamp 51 to move towards the center, so that the guide rollers 52 of the left limiting clamp 5 and the right limiting clamp 51 are in contact with the left and right sides of the steel plate. The material blocking mechanism 13 pushes the lower die 2 to press down and bend the steel plate. The front side of the bent steel plate is raised along the cylindrical surface of the guide rollers 52 on both sides, and the L-shaped material blocking plate 7 on the upper surface of the lower die 2 is still limited and abutted against the side of the bent and raised steel plate, so that the steel plate is bent a second time along this path, in order to help ensure the accuracy of the guide path of the bending machine body 1 during multiple bends and prevent the steel plate from deviating or failing during multiple bends.

[0021] In this embodiment, a mold support 31 is connected to the upper end of the bending machine body 1 via a hydraulic mechanism 11. An upper mold 3 is installed on the lower end face of the mold support 31, and a material stop mechanism 13 is assembled on the rear side of the lower mold 2. The rear side of the mold support 31 is slidably connected to the bending machine body 1 via a lifting frame 12, and a CNC cabinet 4 is provided on the left side of the bending machine body 1.

[0022] In a preferred embodiment, the hydraulic mechanism 11 is an important component of the bending machine body 1 (encompassing the main pump, oil tank, solenoid valve, oil pipes, etc.). The main pump is used to deliver oil pressure through the oil pipes to the lifting cylinder and bending cylinder on the worktable. The solenoid valve is used to control the flow direction and magnitude of the oil pressure, adjust the stroke of the cylinder, and realize the control of the bending process. The stop mechanism 13 serves to support and position the plate to be bent, limiting the bending movement distance of the steel plate and ensuring bending accuracy. The CNC cabinet 4 mainly consists of the CNC system, programming equipment, and display screen, and is the "brain" of the entire CNC bending machine. It can input information such as the bending dimensions and number of bends from the drawings into the system through the programming equipment, and display the processing process and results in real time through the display screen. The control system can accurately control the stroke and pressure of the cylinder to ensure processing accuracy and quality.

[0023] In this embodiment, a fixing plate 14 is welded to the front end face of the bending machine body 1. Double-threaded screws 6 are installed between the fixing plates 14 via bearings. A motor 62 is fixed to the right end face of the fixing plate 14. The double-threaded screw 6 has two sets of reverse threads on its rod surface. The lower ends of the left limiting clamp 5 and the right limiting clamp 51 are fixed to the drive block 61 by fastening bolts 55. Fixing posts 53 are inserted and screwed into the inner sides of the left limiting clamp 5 and the right limiting clamp 51. Guide blocks 54 are fixed to the side ends of the left limiting clamp 5 and the right limiting clamp 51.

[0024] In a preferred embodiment, motor 62 drives the double-threaded screw 6 to rotate. Drive block 61 converts the rotational motion of the double-threaded screw 6 into linear motion, driving the left and right limiting clamping plates 5 and 51 to move horizontally in opposite directions synchronously. This provides limiting and guiding for the steel plate entering the lower die 2, effectively preventing deviation or failure during multiple bending processes. It also facilitates precise auxiliary guidance of the steel plate's bending path, ensuring accurate bending positioning of the CNC bending machine. Guide block 54 provides auxiliary support for the steel plate entering the lower die 2.

[0025] In this embodiment, the rear section of the L-shaped abutment plate 7 contacts the front surface of the lower mold 2 via auxiliary ball bearings 72, and the upper surface of the lower mold 2 is fitted with the L-shaped abutment plate 7.

[0026] In a preferred embodiment, the L-shaped backing plate 7 moves on the surface of the lower mold 2 by rolling the auxiliary ball bearing 72, and limits and clamps the side of the steel plate on the surface of the lower mold 2, so that the bent or warped side of the steel plate is always in contact with the L-shaped backing plate 7. The pressure sensor 71 at the side end of the L-shaped backing plate 7 senses the pressing force on the side of the steel plate at the lower mold 2, so as to avoid excessive pressing and deformation of the steel plate.

[0027] This utility model of a CNC bending machine with a guiding mechanism can effectively solve the problem in the prior art where one side of the steel plate bends and warps during bending, causing the bent steel plate to detach from the feeding frame and affecting the bending guidance processing effect. It effectively prevents the steel plate from deviating or failing during multiple bending processes, facilitates precise auxiliary guidance of the steel plate bending path, ensures accurate bending positioning of the CNC bending machine, and improves the bending processing effect of the CNC bending machine. It is suitable for CNC bending machines with a guiding mechanism.

Claims

1. A CNC bending machine with a guiding mechanism, comprising: A bending machine body (1), wherein a lower mold (2) is mounted on the table surface of the bending machine body (1), and an upper mold (3) is provided on the upper end of the lower mold (2), characterized in that: The lower mold (2) and the upper mold (3) are symmetrically distributed with a limiting left clamping plate (5) and a limiting right clamping plate (51) at their front ends. The side ends of the limiting left clamping plate (5) and the limiting right clamping plate (51) are fitted with guide rollers (52) through fixing columns (53). The lower ends of the limiting left clamping plate (5) and the limiting right clamping plate (51) are connected to a double threaded screw (6) through a drive block (61). The right side end of the double threaded screw (6) is axially connected to a motor (62). The rear sides of the limiting left clamping plate (5) and the limiting right clamping plate (51) are both fixed with L-shaped abutment plates (7). The side ends of the L-shaped abutment plates (7) are embedded with pressure sensors (71).

2. A CNC bending machine with a guiding mechanism according to claim 1, characterized in that, The upper end of the bending machine body (1) is connected to a mold support (31) via a hydraulic mechanism (11). An upper mold (3) is installed on the lower end face of the mold support (31), and a material stop mechanism (13) is assembled on the rear side of the lower mold (2).

3. A CNC bending machine with a guiding mechanism according to claim 2, characterized in that, The mold support (31) is slidably connected to the bending machine body (1) via a lifting frame (12) on the rear side, and a CNC cabinet (4) is provided on the left side of the bending machine body (1).

4. A CNC bending machine with a guiding mechanism according to claim 1, characterized in that, The bending machine body (1) has a fixed plate (14) welded to its front end face. Double threaded screws (6) are installed between the fixed plates (14) through bearings. A motor (62) is fixed to the right end face of the fixed plate (14).

5. A CNC bending machine with a guiding mechanism according to claim 1, characterized in that, The double-threaded screw (6) has two sets of reverse threads on its rod surface. The lower ends of the left limiting clamp (5) and the right limiting clamp (51) are fixed to the drive block (61) by fastening bolts (55).

6. A CNC bending machine with a guiding mechanism according to claim 1, characterized in that, A fixing post (53) is inserted and screwed into the inner side of the left limiting clamp (5) and the right limiting clamp (51), and a guide block (54) is fixed to the side end of the left limiting clamp (5) and the right limiting clamp (51).

7. A CNC bending machine with a guiding mechanism according to claim 1, characterized in that, The rear section of the L-shaped abutment plate (7) is in contact with the front surface of the lower mold (2) through auxiliary balls (72), and the upper surface of the lower mold (2) is fitted with the L-shaped abutment plate (7).

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