An electro-hydraulic servo CNC bending machine that facilitates quick mold change.

Abstract

This utility model discloses an electro-hydraulic servo CNC bending machine that facilitates quick mold replacement. It includes a worktable, a frame fixed to the rear end of the worktable, an electro-hydraulic servo drive device fixed to the top of the inner wall of the frame, a bending cutter fixed to the lower end of the electro-hydraulic servo drive device, a guide rail fixed to the top of the worktable, a bending mold base slidably connected to the guide rail, side supports fixed to the left and right ends of the worktable, vertical hydraulic rods fixed to the top of the side supports, a transmission housing fixed to the top of the vertical hydraulic rods, horizontal shafts rotatably connected to the front and rear of the transmission housing, inclined support arms fixed to the ends of the horizontal shafts, and positioning components fixed between the left and right sets of inclined support arms. This device has a reasonable structural design, enabling the accurate insertion of multiple positioning pins into the corresponding mating holes and positioning holes on the bending mold base and guide rail. Combined with the horizontal part of the L-shaped block for pressing, it can achieve multi-point synchronous locking. Reinforcing ribs enhance the structural strength of the L-shaped block, further ensuring the stability of mold operation.

Description

Technical Field

[0001] This utility model relates to the field of bending machine technology, and in particular to an electro-hydraulic servo CNC bending machine that facilitates quick mold replacement. Background Technology

[0002] As one of the core pieces of equipment in sheet metal processing, bending machines are widely used in the bending and forming processes of metal structural parts, chassis and cabinets, automotive parts, and other products. With the manufacturing industry moving towards intelligent and flexible operations, the frequency of product changeovers on production lines is increasing, placing higher demands on the rapid die changeover capabilities of bending machines. Efficient die changeover is a key factor in shortening equipment preparation time and improving production efficiency.

[0003] Currently, common electro-hydraulic servo CNC bending machines typically use bolts to fix the bending dies to the worktable. When changing dies, multiple high-strength bolts fixing the dies must be loosened and removed one by one. After removing the old dies, the new dies are hoisted to the working position, and the fixing bolts are manually installed and tightened again. The entire replacement process is very cumbersome.

[0004] Existing bending machine die replacement methods are time-consuming, affecting overall work efficiency. Manual bolt operation carries the risk of inconsistent tightening force, resulting in poor consistency of locking force at various points. Furthermore, the die is prone to micro-movement or displacement under pressure, affecting processing accuracy and even posing safety hazards. Therefore, we propose an electro-hydraulic servo CNC bending machine that facilitates rapid die replacement, overcoming the shortcomings of existing technologies. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing an electro-hydraulic servo CNC bending machine that facilitates rapid mold replacement.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: an electro-hydraulic servo CNC bending machine that facilitates quick mold replacement, comprising a worktable, a frame fixedly connected to the rear end of the worktable, an electro-hydraulic servo drive device fixedly connected to the top of the inner wall of the frame, a bending cutter fixedly connected to the lower end of the electro-hydraulic servo drive device, a guide rail fixedly connected to the top of the worktable, a bending mold base slidably connected to the guide rail, side supports fixedly connected to the left and right ends of the worktable, a vertical hydraulic rod fixedly connected to the top of the side supports, a transmission housing fixedly connected to the top of the vertical hydraulic rod, a horizontal shaft rotatably connected to the front and rear parts of the transmission housing, an inclined support arm fixedly connected to the end of the horizontal shaft, and a positioning component fixedly connected between the left and right sets of inclined support arms.

[0007] Preferably, in an electro-hydraulic servo CNC bending machine that facilitates quick mold replacement, the positioning component includes multiple L-shaped blocks arranged at equal intervals along the horizontal direction, a lifting crossbar is connected to the middle of the multiple L-shaped blocks, an inclined support arm is fixedly connected to the end of the lifting crossbar, a positioning column is fixedly connected to the bottom wall of the horizontal part of the L-shaped block, and a reinforcing rib is fixedly connected to the inner wall of the L-shaped block.

[0008] Preferably, in an electro-hydraulic servo CNC bending machine that facilitates quick mold replacement, a worm gear is fixedly connected to one end of the horizontal shaft extending into the transmission housing, a steering motor is fixedly connected to the top wall of the transmission housing, a worm is fixedly connected to the bottom output end of the steering motor, and two worm gears are respectively meshed and connected to the front and rear ends of the worm. The spiral angle of the worm is smaller than the friction angle of the worm gear contact.

[0009] Preferably, in an electro-hydraulic servo CNC bending machine that facilitates quick mold replacement, lifting rings are fixedly connected to the left and right sides of the top of the bending mold base, a sliding groove is opened at the bottom of the bending mold base, multiple docking holes are opened at the top of the sliding groove, the guide rail is slidably connected to the sliding groove, and multiple clearance openings are opened at the front and rear of the top of the bending mold base.

[0010] Preferably, in an electro-hydraulic servo CNC bending machine that facilitates quick mold replacement, the top of the guide rail is provided with multiple positioning holes, the right end of the guide rail is fixedly connected to a limit stop, and the left and right ends of the worktable are fixedly connected to limit rods in pairs.

[0011] Preferably, in an electro-hydraulic servo CNC bending machine that facilitates quick mold replacement, a control panel is fixedly connected to the front end of the worktable, and the control panel is electrically connected to the electro-hydraulic servo drive device, the vertical hydraulic rod, and the steering motor.

[0012] The beneficial effects of this utility model are:

[0013] 1. The device has a reasonable structural design. The bending die can be pushed and installed along the guide rail. The height of the transmission shell and positioning components is controlled by the vertical hydraulic rod. Multiple positioning pins can be accurately inserted into the corresponding docking holes and positioning holes on the bending die base and guide rail. In conjunction with the horizontal part of the L-shaped block for pressing, multi-point synchronous locking can be achieved. The structural strength of the L-shaped block is improved by the reinforcing ribs, which further ensures the stability of the die operation.

[0014] 2. This device greatly facilitates the hoisting, hoisting, and movement of molds through the sliding fit of the guide rail and the slide, the setting of the lifting ring, and the movable design of the positioning components. When changing molds, the worm gear drives the inclined support arm to deflect, increasing the distance between the front and rear positioning components. This allows the mold to be moved out of the upper space of the bending mold base, providing unobstructed space for hoisting operations and ensuring the safety of mold changing operations. The mechanical equipment is used to complete the mold loading, unloading, and positioning, eliminating the need for traditional manual operation and bolt fixing, greatly shortening the mold changing time and simplifying the operation process. Attached Figure Description

[0015] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the specific embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the positioning component in this utility model;

[0018] Figure 3 This is a schematic diagram of the internal structure of the transmission housing in this utility model;

[0019] Figure 4 This is a schematic diagram of the bending die holder in this utility model;

[0020] Figure 5 This is a schematic diagram of the guide rail structure in this utility model.

[0021] The attached figures are labeled as follows:

[0022] 1. Workbench; 2. Frame; 3. Electro-hydraulic servo drive device; 4. Bending cutter; 5. Guide rail; 6. Bending die holder; 7. Side support; 8. Vertical hydraulic rod; 9. Transmission housing; 10. Horizontal shaft; 11. Diagonal support arm; 12. Positioning assembly; 13. Limiting rod; 14. Control panel; 51. Positioning hole; 52. Limiting block; 61. Lifting ring; 62. Slide groove; 63. Docking hole; 64. Clearance opening; 91. Worm gear; 92. Steering motor; 93. Worm; 121. L-shaped block; 122. Lifting crossbar; 123. Positioning column; 124. Reinforcing rib. Detailed Implementation

[0023] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0024] like Figure 1-5As shown, an electro-hydraulic servo CNC bending machine that facilitates quick mold replacement is disclosed. The machine includes a worktable 1, a frame 2 fixedly connected to the rear end of the worktable 1, an electro-hydraulic servo drive device 3 fixedly connected to the top of the inner wall of the frame 2, a bending cutter 4 fixedly connected to the lower end of the electro-hydraulic servo drive device 3, a guide rail 5 fixedly connected to the top of the worktable 1, a bending mold base 6 slidably connected to the guide rail 5, side supports 7 fixedly connected to the left and right ends of the worktable 1, a vertical hydraulic rod 8 fixedly connected to the top of the side supports 7, a transmission housing 9 fixedly connected to the top of the vertical hydraulic rod 8, a horizontal shaft 10 rotatably connected to the front and rear of the transmission housing 9, an inclined support arm 11 fixedly connected to the end of the horizontal shaft 10, and a positioning assembly 12 fixedly connected between the two sets of inclined support arms 11.

[0025] The positioning component 12 includes multiple L-shaped blocks 121 arranged at equal intervals along the horizontal direction, which can abut against the bending die base 6 for limiting and fixing. The middle of the multiple L-shaped blocks 121 is connected to a lifting crossbar 122, which facilitates the synchronous lifting and lowering of the multiple L-shaped blocks 121. The end of the lifting crossbar 122 is fixedly connected to the inclined support arm 11. The bottom wall of the horizontal part of the L-shaped block 121 is fixedly connected to a positioning column 123, and the inner wall of the L-shaped block 121 is fixedly connected to a reinforcing rib 124 to ensure structural strength.

[0026] A worm gear 91 is fixedly connected to one end of the horizontal shaft 10 that extends into the transmission housing 9. A steering motor 92 is fixedly connected to the top wall of the transmission housing 9. A worm 93 is fixedly connected to the bottom output end of the steering motor 92. The front and rear ends of the worm 93 are respectively meshed with two worm gears 91. The spiral angle of the worm 93 is smaller than the friction angle of the worm gear 91 and worm 93 contacting each other. Its self-locking function is used to maintain the tilt angle of the inclined support arm 11.

[0027] The bending die base 6 has lifting rings 61 fixed on the top left and right sides for easy hoisting and handling. The bottom of the bending die base 6 has a sliding groove 62, and the top of the sliding groove 62 has multiple docking holes 63. The guide rail 5 is slidably connected to the sliding groove 62 to reduce friction and facilitate the loading and unloading of the bending die base 6. The top of the bending die base 6 has multiple clearance openings 64 at the front and back to accommodate the reinforcing ribs 124.

[0028] The top of the guide rail 5 has multiple positioning holes 51, which can be used to position the guide rail 5 with the docking hole 63 and the positioning post 123. The right end of the guide rail 5 is fixed with a limit stop 52, which is convenient for limiting the bending die base 6 during installation. The left and right ends of the worktable 1 are fixedly connected with limit rods 13 in pairs. When the upper side of the inclined support arm 11 abuts against the limit rod 13, the positioning post 123 and the positioning hole 51 are set on the same axis.

[0029] A control panel 14 is fixedly connected to the front end of the workbench 1. The control panel 14 is electrically connected to the electro-hydraulic servo drive device 3, the vertical hydraulic rod 8 and the steering motor 92, which facilitates the sequential operation of the control equipment.

[0030] The specific working principle of this embodiment is as follows:

[0031] This device consists of a workbench 1 and a rear frame 2 forming the main frame. The control panel 14 controls the operation of the equipment. The electro-hydraulic servo drive 3 drives the bending cutter 4 to move downward, which can cooperate with the bending die 6 to complete the bending action of the workpiece. When the bending die 6 is replaced, the vertical hydraulic rod 8 drives the transmission housing 8 to rise, the positioning component 12 disengages from the bending die 6, and the steering motor 92 drives the worm gear 91 to rotate, so that the two worm wheels 91 mesh and rotate. The horizontal shaft 10 can drive the inclined support arm 11 to deflect, and the included angle between the front and rear sets of inclined support arms 11 increases. The positioning component 12 moves out of the upper space of the bending die 6, and the external hoisting equipment can smoothly move the bending die 6 out through the lifting ring 61.

[0032] When installing the bending die base 6, the bottom slide groove 62 is pushed in conjunction with the guide rail 5 until the right end of the bending die base 6 abuts against the limit stop 52. At this time, the docking hole 63 and the positioning hole 51 are coaxial. The steering motor 92 is controlled to drive the worm gear 91 to reverse, and the included angle of the two sets of inclined support arms 11 decreases. When the upper side of the inclined support arm 11 abuts against the limit rod 13, the positioning pin 123 and the positioning hole 51 are coaxial. The vertical hydraulic rod 8 is used to drive the transmission housing 9 to descend and reset. The positioning pin 123 of the positioning assembly 12 extends into the lower docking hole 63 and the positioning hole 51, the reinforcing rib 124 extends into the clearance opening 64, and the horizontal bottom wall of the L-shaped block 52 presses against the bending die base 6, further improving the stability of the die operation.

[0033] This equipment uses hydraulic lifting and motor-driven mechanical linkage to achieve multi-point positioning and locking of bending die 6, ensuring stable die operation. The die changing operation is simple and unobstructed, improving changing efficiency and safety.

[0034] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. An electro-hydraulic servo CNC bending machine that facilitates quick mold change, comprising a worktable (1), characterized in that: The workbench (1) is fixed to a frame (2) at its rear end. An electro-hydraulic servo drive device (3) is fixed to the top of the inner wall of the frame (2). A bending cutter (4) is fixed to the lower end of the electro-hydraulic servo drive device (3). A guide rail (5) is fixed to the top of the workbench (1). A bending die seat (6) is slidably connected to the guide rail (5). Side supports (7) are fixed to the left and right ends of the workbench (1). A vertical hydraulic rod (8) is fixed to the top of the side support (7). A transmission housing (9) is fixed to the top of the vertical hydraulic rod (8). A horizontal shaft (10) is rotatably connected to the front and rear of the transmission housing (9). An inclined support arm (11) is fixed to the end of the horizontal shaft (10). A positioning component (12) is fixed between the two sets of inclined support arms (11).

2. The electro-hydraulic servo numerical control bending machine with quick die replacement according to claim 1, characterized in that: The positioning component (12) includes a plurality of L-shaped blocks (121) arranged at equal intervals along the horizontal direction. A lifting crossbar (122) is connected to the middle of the plurality of L-shaped blocks (121). An inclined support arm (11) is fixedly connected to the end of the lifting crossbar (122). A positioning column (123) is fixedly connected to the bottom wall of the horizontal part of the L-shaped block (121). A reinforcing rib (124) is fixedly connected to the inner wall of the L-shaped block (121).

3. The electro-hydraulic servo numerical control bending machine with quick die replacement according to claim 1, characterized in that: The horizontal shaft (10) extends into the transmission housing (9) and is fixedly connected to one end of a worm gear (91). A steering motor (92) is fixedly connected to the top wall of the transmission housing (9). A worm (93) is fixedly connected to the bottom output end of the steering motor (92). The front and rear ends of the worm (93) are respectively meshed with two worm gears (91). The spiral angle of the worm (93) is smaller than the friction angle of the contact between the worm gear (91) and the worm (93).

4. The electro-hydraulic servo numerical control bending machine with quick die replacement according to claim 1, characterized in that: The bending die base (6) has lifting rings (61) fixed on the top left and right sides. The bottom of the bending die base (6) has a sliding groove (62). The top of the sliding groove (62) has multiple docking holes (63). The guide rail (5) is slidably connected to the sliding groove (62). The top of the bending die base (6) has multiple clearance openings (64).

5. The electro-hydraulic servo numerical control bending machine with quick die replacement according to claim 1, characterized in that: The top of the guide rail (5) has multiple positioning holes (51), the right end of the guide rail (5) is fixedly connected to a limit stop (52), and the left and right ends of the worktable (1) are fixedly connected to limit rods (13) in pairs.

6. The electro-hydraulic servo CNC bending machine for easy mold change according to claim 3, characterized in that: The front end of the workbench (1) is fixedly connected to a control panel (14), which is electrically connected to an electro-hydraulic servo drive device (3), a vertical hydraulic rod (8), and a steering motor (92).

Images