Die changing structure for numerical control bending machine

Abstract

The utility model discloses a die change structure for numerical control bender, including bender body, bending die and fixing mechanism, the bender body is provided with the recess for mounting the fixing mechanism, the bottom of the bending die is fixedly provided with the connecting plate, and the connecting plate is mounted on the bender body through the fixing mechanism. According to the bending die, the fixing mechanism is arranged, the guiding inserting grooves facilitating inserting connection of the connecting plates are formed between the two sets of symmetrically-arranged L-shaped plates and the fixing base, primary inserting connection positioning of the bending die can be achieved, then the positioning assembly is matched with the first through groove in an inserting connection mode, and therefore the bending die can be rapidly assembled and disassembled. The bending die can be secondarily limited and fixed, the problem that a bolt fixing mode of a traditional bending die is tedious in operation is solved, the labor intensity is reduced, the die changing time is greatly shortened, meanwhile, the equipment shutdown time is remarkably shortened, and the overall production efficiency is improved.

Description

Technical Field

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

[0002] CNC bending machines use equipped 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] The prior art provides an automatic die-changing device for a CNC bending machine (publication number CN217192097U), which includes a bending machine body. A blanking platform is provided on one side of the bending machine body, and a first ball screw is provided at both the front and rear ends of the blanking platform. A drive wheel is rotatably connected to the top of the blanking platform, and a limit baffle is provided on one side of the blanking platform. A loading platform is provided on the other side of the bending machine body, and a second cylinder is provided on one side of the loading platform, and a push block is provided on one side of the second cylinder.

[0004] In actual use, the above-mentioned patent has a rather cumbersome mold replacement process, which requires repeated disassembly and installation of multiple locking bolts to complete the mold replacement. This process is not only time-consuming and labor-intensive, increasing the workload of the staff, but also causes excessive downtime, which affects the production efficiency of the CNC bending machine. Therefore, we need to propose a mold replacement structure for CNC bending machines. Utility Model Content

[0005] The purpose of this utility model is to provide a mold changing structure for a CNC bending machine. By setting a fixing mechanism, the bending mold can be quickly installed and disassembled, thereby solving the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A die-changing structure for a CNC bending machine includes a bending machine body, a bending die, and a fixing mechanism;

[0008] The bending machine body has a groove for installing a fixing mechanism. A connecting plate is fixedly installed at the bottom of the bending die, and the connecting plate is installed on the bending machine body through the fixing mechanism. The fixing mechanism enables the quick installation and disassembly of the bending die.

[0009] The fixing mechanism includes a fixing seat, an L-shaped plate, a positioning component, and a first through groove; the fixing seat is fixedly installed in the groove, and two sets of L-shaped plates are fixedly installed on the top of the fixing seat for engaging the connecting plate; the positioning component is disposed in the fixing seat; and the connecting plate has multiple sets of first through grooves symmetrically opened inside for inserting the positioning component.

[0010] Preferably, the positioning assembly includes a motor, a threaded rod, a movable plate, and locking blocks; the motor is fixedly installed at the inner bottom of the fixed base, and the output end of the motor is fixedly connected to one end of the threaded rod via a coupling to drive the rotation of the threaded rod, and the top end of the threaded rod is rotatably installed at the inner top of the fixed base; the movable plate is threadedly connected to the outer side of the threaded rod, and multiple sets of locking blocks are fixedly installed on the top of the movable plate; by rotating the threaded rod, the movable plate and the multiple sets of locking blocks can be driven to rise and fall synchronously.

[0011] Preferably, the multiple sets of the snap-fit ​​blocks are arranged in a rectangular array, and the outer wall of the snap-fit ​​blocks is adapted to the inner wall of the first through groove.

[0012] Preferably, a partition is fixedly installed inside the mounting base, and the partition is located above the motor.

[0013] Preferably, the positioning component further includes a snap-fit ​​groove, and the L-shaped plate has multiple sets of snap-fit ​​grooves inside for snapping the snap-fit ​​block.

[0014] Preferably, sliders are fixedly installed on both sides of the movable plate, and grooves are opened on both sides inside the fixed base. The sliders slide in the grooves to ensure the vertical movement of the movable block.

[0015] Preferably, the top of the fixing seat has multiple sets of second through slots for moving the locking block.

[0016] Preferably, a limiting plate is fixedly installed on one side of both sets of L-shaped plates, and the limiting plate and the L-shaped plate are located on the same horizontal plane.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] This invention, through the setting of a fixing mechanism, forms guide slots between two symmetrically arranged L-shaped plates and the fixing base, facilitating the insertion of connecting plates. This allows for the initial insertion and positioning of the bending die. Then, through the insertion and engagement of the positioning component with the first through slot, the bending die can be further fixed and limited. The symmetrically distributed multiple sets of first through slots and the positioning component form a multi-point positioning structure, further improving the stability of the bending die installation. Therefore, the dual fixing structure of L-shaped plate snap-fit ​​and positioning component insertion solves the problem of cumbersome operation in traditional bolt-fixing methods for bending dies, enabling rapid installation and disassembly of the bending die. This not only reduces labor intensity and significantly shortens die changeover time but also significantly reduces equipment downtime and improves overall production efficiency. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the fixing mechanism of this utility model;

[0021] Figure 3 This is a structural schematic diagram of the L-shaped plate and positioning assembly of this utility model;

[0022] Figure 4 This is a cross-sectional view of the fixing base of this utility model.

[0023] In the diagram: 1. Bending machine body; 2. Bending die; 3. Fixing mechanism; 31. Fixing base; 32. L-shaped plate; 33. Positioning component; 331. Motor; 332. Threaded rod; 333. Moving plate; 334. Snap-fit ​​block; 335. Snap-fit ​​groove; 34. First through groove; 4. Groove; 5. Connecting plate; 6. Partition plate; 7. Slider; 8. Slide groove; 9. Second through groove; 10. Limiting plate. 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] Please see Figure 1-4 This utility model provides a technical solution:

[0026] A die-changing structure for a CNC bending machine includes a bending machine body 1, a bending die 2, and a fixing mechanism 3;

[0027] The bending machine body 1 has a groove 4 for installing the fixing mechanism 3. The bottom of the bending die 2 is fixedly installed with a connecting plate 5, and the connecting plate 5 is installed on the bending machine body 1 through the fixing mechanism 3. The fixing mechanism 3 enables the quick installation and disassembly of the bending die 2.

[0028] The fixing mechanism 3 includes a fixing seat 31, an L-shaped plate 32, a positioning component 33, and a first through groove 34. The fixing seat 31 is fixedly installed in the groove 4, and two sets of L-shaped plates 32 are fixedly installed on the top of the fixing seat 31 for engaging the connecting plate 5. The positioning component 33 is set in the fixing seat 31. Multiple sets of first through grooves 34 are symmetrically opened inside the connecting plate 5 for inserting the positioning component 33. The fixing seat 31 is embedded in the groove 4 of the bending machine body 1 to form a stable support. The two sets of L-shaped plates 32 symmetrically installed on the top constitute the initial positioning structure of the mold. The positioning component 33 is built into the fixing seat 31 and forms a precise engagement with the multiple sets of first through grooves 34 on the mold connecting plate 5. This double fixing not only ensures the installation accuracy but also improves the structural stability.

[0029] Specifically, the positioning component 33 includes a motor 331, a threaded rod 332, a movable plate 333, and a locking block 334. The motor 331 is fixedly installed at the inner bottom of the fixed base 31. The output end of the motor 331 is fixedly connected to one end of the threaded rod 332 through a coupling to drive the rotation of the threaded rod 332. The top end of the threaded rod 332 is rotatably installed at the inner top of the fixed base 31. The movable plate 333 is threadedly connected to the outer side of the threaded rod 332. Multiple sets of locking blocks 334 are fixedly installed on the top of the movable plate 333. By rotating the threaded rod 332, the movable plate 333 and the multiple sets of locking blocks 334 can be driven to rise and fall synchronously.

[0030] With the positioning component 33, the motor 331 can be a Yaskawa SGMJV-04ADA6C stepper motor. The motor 331 is directly connected to the threaded rod 332 through a coupling to ensure transmission efficiency. The threaded rod 332 has support points at both ends to ensure smooth operation. The moving plate 333 and the threaded rod 332 form a threaded pair, which can convert rotational motion into linear motion. Multiple sets of locking blocks 334 are fixed on the moving plate 333 to achieve synchronous lifting. Therefore, the positioning component 33 realizes the automated control of locking and fixing the bending die 2, eliminating the need for manual tightening of multiple bolts, thereby reducing labor intensity.

[0031] The multiple sets of snap-fit ​​blocks 334 are arranged in a rectangular array, and the outer wall of the snap-fit ​​block 334 is adapted to the inner wall of the first through groove 34. By arranging the snap-fit ​​blocks 334 in a rectangular array, the force is more evenly distributed. The outer dimensions of each snap-fit ​​block 334 match the inner cavity of the first through groove 34, which not only ensures smooth insertion, but also effectively prevents the bending mold 2 from shifting. The multi-point positioning method significantly improves the stability of the bending mold 2 after installation.

[0032] Preferably, a partition 6 is fixedly installed inside the mounting base 31, and the partition 6 is located above the motor 331. By setting the partition 6, the working area of ​​the motor 331 is separated from other components, thereby protecting the motor 331 from external interference.

[0033] Specifically, the positioning component 33 also includes a snap-fit ​​groove 335. The L-shaped plate 32 has multiple snap-fit ​​grooves 335 inside for snap-fitting of the snap-fit ​​block 334. Through the snap-fit ​​grooves 335, the snap-fit ​​block 334 passes through the second through groove 9 at the top of the fixed base 31 and the first through groove 34 of the connecting plate 5 in sequence, and finally embeds into the snap-fit ​​groove 335 inside the L-shaped plate 32, thereby forming a longitudinal mechanical interlock and further enhancing the stability of the bending die 2 installation.

[0034] In a further preferred embodiment, sliders 7 are fixedly installed on both sides of the movable plate 333, and grooves 8 are respectively opened on both sides inside the fixed base 31. The sliders 7 slide in the grooves 8 to ensure the vertical movement of the movable plate. The sliders 7 and the grooves 8 play a limiting and guiding role for the movable plate 333, ensuring that the movable plate 333 always maintains vertical movement during the lifting process, and avoiding possible jamming or deflection.

[0035] The top of the fixed base 31 has multiple sets of second through slots 9 for the movement of the locking block 334. The second through slots 9 provide a channel for the lifting and lowering movement of the locking block 334, preventing the locking block 334 from deflecting or getting stuck during its movement.

[0036] Specifically, a limiting plate 10 is fixedly installed on one side of each of the two sets of L-shaped plates 32, and the limiting plate 10 and the L-shaped plate 32 are located on the same horizontal plane. With the setting of the limiting plate 10, when the connecting plate 5 is inserted into the insertion groove formed by the L-shaped plate 32, the limiting plate 10 acts as a lateral stop, forcibly restricting the displacement freedom of the connecting plate 5, so that it can only enter the fixed position along the preset path, avoiding the process of repeated manual adjustment of alignment. The operator can complete the initial positioning without relying on measuring tools, which facilitates the precise snap-fit ​​and fixation of the subsequent positioning component 33, thereby significantly shortening the mold change time.

[0037] Working principle: When this utility model is used, the guide slot formed between the L-shaped plate 32 and the fixed seat 31 allows the connecting plate 5 at the bottom of the bending mold 2 to be inserted into the guide slot, forming a lateral constraint. The limiting plate 10 ensures that the connecting plate 5 is placed horizontally in place, thereby completing the initial positioning and snapping of the bending mold 2. Then, the motor 331 in the fixed seat 31 is started, driving the threaded rod 332 to rotate. The threaded transmission drives the moving plate 333 to rise vertically along the slide 8. The snapping blocks 334 arranged in a rectangular array on the moving plate 333 rise synchronously. The snapping blocks 334 pass through the second through slot 9 at the top of the fixed seat 31 and the first through slot 34 of the connecting plate 5 in sequence, and finally embed into the snapping slot 335 inside the L-shaped plate 32, forming a longitudinal mechanical interlock, thereby completing the rapid installation of the bending mold 2.

[0038] When the bending die 2 needs to be disassembled, the motor 331 rotates in the opposite direction to make the snap-fit ​​block 334 exit the first through slot 34 and the snap-fit ​​slot 335 on the L-shaped plate 32. After the longitudinal lock is released, the connecting plate 5 is pulled out laterally from the insertion slot of the L-shaped plate 32, thereby completing the quick disassembly of the bending die 2.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A die-changing structure for a CNC bending machine, characterized in that: It includes the bending machine body (1), bending die (2) and fixing mechanism (3); The bending machine body (1) has a groove (4) for installing a fixing mechanism (3). A connecting plate (5) is fixedly installed at the bottom of the bending die (2), and the connecting plate (5) is installed on the bending machine body (1) through the fixing mechanism (3). The bending die (2) can be quickly installed and disassembled through the fixing mechanism (3). The fixing mechanism (3) includes a fixing seat (31), an L-shaped plate (32), a positioning component (33), and a first through groove (34). The fixing seat (31) is fixedly installed in the groove (4), and two sets of L-shaped plates (32) are fixedly installed on the top of the fixing seat (31) for snapping the connecting plate (5). The positioning component (33) is set in the fixing seat (31), and multiple sets of first through grooves (34) are symmetrically opened inside the connecting plate (5) for the insertion of the positioning component (33).

2. The die-changing structure for a CNC bending machine according to claim 1, characterized in that: The positioning component (33) includes a motor (331), a threaded rod (332), a moving plate (333), and a locking block (334). The motor (331) is fixedly installed at the inner bottom of the fixed base (31). The output end of the motor (331) is fixedly connected to one end of the threaded rod (332) through a coupling to drive the rotation of the threaded rod (332). The top end of the threaded rod (332) is rotatably installed at the inner top of the fixed base (31). The moving plate (333) is threadedly connected to the outside of the threaded rod (332). Multiple sets of locking blocks (334) are fixedly installed on the top of the moving plate (333). By rotating the threaded rod (332), the moving plate (333) and the multiple sets of locking blocks (334) can be driven to rise and fall synchronously.

3. The die-changing structure for a CNC bending machine according to claim 2, characterized in that: The multiple sets of the snap-fit ​​blocks (334) are arranged in a rectangular array, and the outer wall of the snap-fit ​​block (334) is adapted to the inner wall of the first through groove (34).

4. The die-changing structure for a CNC bending machine according to claim 2, characterized in that: The mounting base (31) has a partition (6) fixedly installed inside, and the partition (6) is located above the motor (331).

5. The die-changing structure for a CNC bending machine according to claim 2, characterized in that: The positioning component (33) also includes a snap-fit ​​groove (335), and the L-shaped plate (32) has multiple sets of snap-fit ​​grooves (335) inside for snap-fitting of the snap-fit ​​block (334).

6. The die-changing structure for a CNC bending machine according to claim 2, characterized in that: The movable plate (333) is fixedly installed with sliders (7) on both sides. The fixed base (31) has grooves (8) on both sides. The sliders (7) slide in the grooves (8) to ensure the vertical movement of the movable block.

7. The die-changing structure for a CNC bending machine according to claim 2, characterized in that: The top of the fixed base (31) has multiple sets of second through slots (9) for moving the locking block (334).

8. The die-changing structure for a CNC bending machine according to claim 1, characterized in that: A limiting plate (10) is fixedly installed on one side of each of the two sets of L-shaped plates (32), and the limiting plate (10) and the L-shaped plate (32) are located on the same horizontal plane.

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