Numerical control bending device

Abstract

The utility model relates to the technical field of bending machining, in particular to a numerical control bending device which comprises a bending machining table, the top of the bending machining table is connected with a translation seat in a sliding mode, the front face of the translation seat is connected with a spinning roller in a rotating mode, the back face of an eccentric wheel is connected with a linkage rod in a rotating mode, and a limiting assembly is arranged on the inner side of the translation seat. The top of the bending machining table is fixedly connected with a scale plate. According to the numerical control bending device, according to the size of a plate, a gear motor is used for driving two worms, the two worms drive a first threaded lead screw and a second threaded lead screw correspondingly, the distance between two translation bases is adjusted through two sliding sleeve blocks, the plate is placed on the inner sides of the translation bases, and at the moment, a spinning roller is rotated to enable an eccentric wheel to drive a linkage rod to eccentrically rotate; the distance between the first clamping cylinder and the second clamping cylinder is adjusted, the plate is clamped and limited, and due to the fact that the clamping cylinders are each of a rotary cylinder structure, it can be guaranteed that the two ends of the plate can be normally recycled towards the bending point when the plate is bent.

Description

Technical Field

[0001] The utility model relates to the technical field of bending processing, in particular to a numerical control bending device. Background Technique

[0002] A bending machine uses the equipped dies (general or special dies) to bend metal sheets in a cold state into workpieces with various geometric cross-sectional shapes. It is a sheet metal forming machine designed for cold-rolled sheet metal processing and is widely used in the sheet metal bending processing of industries such as automobiles, ships, aircraft manufacturing, containers, elevators, and railway vehicles.

[0003] After retrieval, a numerical control bending machine is disclosed in the utility model patent with the Chinese patent publication number CN216728922U. In this numerical control bending machine, a driving motor drives a screw rod to drive the upper die bending head to move downward. At this time, the abutting rod and the telescopic rod on the left side of the upper die bending head will press and fix the plate, and then the upper die bending head is further pressed down to bend. However, when the central part of the plate is bent under force, its two ends will have a moving trend of recovering towards the force application point. And this numerical control bending machine fixes the plate by pressing it with the lower end of the abutting rod. At this time, the end of the plate that is pressed and fixed cannot recover normally, thus affecting the normal bending of the plate. Therefore, the limit bending structure of this numerical control bending machine still needs to be further improved, so a numerical control bending device is proposed. Summary of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model provides a numerical control bending device, which has the advantages of being convenient for fixing and limiting the plate and ensuring normal bending, and solves the problem that the numerical control bending machine in the above background technology uses the method of pressing and fixing the plate, which easily causes the two ends of the plate to not be able to recover normally during bending.

[0005] To achieve the above object, the utility model provides the following technical solution: A numerical control bending device, including a bending processing table, and a limit clamping structure is arranged on the top of the bending processing table;

[0006] The limit clamping structure includes a groove plate fixed on the top of the bending processing table, a translation seat is slidably connected to the top of the bending processing table, a rotating wheel is rotatably connected to the front of the translation seat, an eccentric wheel is fixedly connected to the back of the rotating wheel, a linkage rod is rotatably connected to the back of the eccentric wheel, a limit component is arranged inside the translation seat, and a scale plate is fixedly connected to the top of the bending processing table.

[0007] Furthermore, a groove chamber is formed inside the bending processing table, and an adjusting assembly is arranged inside the groove chamber. The adjusting assembly includes a first threaded lead screw rotatably connected to the left inner wall of the groove chamber and a second threaded lead screw rotatably connected to the right inner wall of the groove chamber. The number of both the first threaded lead screw and the second threaded lead screw is two. A first worm gear is coaxially fixed to the left end of the outer side of each of the two first threaded lead screws, and a second worm gear is coaxially fixed to the right end of the outer side of each of the two second threaded lead screws.

[0008] Furthermore, the thread layers of the two first threaded lead screws and the thread layers of the two second threaded lead screws are mirror structures of each other. Two worms are rotatably connected inside the groove chamber. The outer side of one of the worms meshes with the two first worm gears, and the outer side of the other worm meshes with the two second worm gears. Belt pulleys driven by a belt are fixedly connected to the front ends of both worms. A reduction motor is fixedly installed on the left side of the front surface of the bending processing table, and the output end of the reduction motor is fixedly connected to the front end of one of the belt pulleys.

[0009] Furthermore, sliding sleeve blocks are threadedly connected to the exteriors of the two first threaded lead screws and the two second threaded lead screws. An inner tooth layer is arranged inside the rotating wheel, and a limiting rod is inserted inside the rotating wheel. An external tooth ring adapted to the inner tooth layer is arranged on the outer side of the limiting rod. Two horizontal grooves are formed on both the left side and the right side of the top of the groove chamber.

[0010] Furthermore, bearing blocks are fixedly installed on both the inner front wall and the inner rear wall of the translation seat. The limiting assembly includes a first clamping cylinder rotatably connected to the inner sides of the two bearing blocks. Vertical grooves are formed on both the inner front wall and the inner rear wall of the translation seat. Lifting blocks are slidably connected inside the two vertical grooves. A second clamping cylinder is rotatably connected to the opposite sides of the two lifting blocks. The end of the linkage rod away from the eccentric wheel is rotatably connected to the front surface of one of the lifting blocks.

[0011] Furthermore, a bending assembly is arranged on the top of the bending processing table. The bending assembly includes a mounting frame fixed on the top of the bending processing table. A hydraulic cylinder is fixedly installed inside the mounting frame. The bottom of the hydraulic cylinder is movably connected to a hydraulic push rod, and the bottom of the hydraulic push rod is fixedly connected to a lifting seat.

[0012] Furthermore, two guiding frames are fixedly connected to the inner side of the mounting frame. Guiding lead screws are fixedly connected inside the two guiding frames. The left and right sides of the lifting seat are respectively slidably connected to the exteriors of the two guiding lead screws, and a bending die plate is fixedly connected to the bottom of the lifting seat. An infrared counting sensor is fixedly installed on the inner rear wall of the mounting frame, and an infrared emitting tube and an infrared receiving port are arranged on the front surface of the infrared counting sensor.

[0013] Furthermore, an infrared reflection sheet is fixedly connected to the back surface of the lifting seat, a PLC control panel is fixedly installed on the left side of the mounting frame, the infrared counting sensor is signal-connected to the PLC control panel through an infrared signal processing circuit, a cylinder is fixedly installed on the inner rear wall of the mounting frame, a piston push rod is movably connected to the front surface of the cylinder, and the front end of the piston push rod is horizontally aligned with the inner groove surface of the groove plate.

[0014] Beneficial effects

[0015] Compared with the prior art, the technical solution of the present application has the following beneficial effects:

[0016] For this numerical control bending device, according to the size of the plate, a reduction motor drives two worm gears through belt pulleys, and the two worm gears drive the first threaded screw rod and the second threaded screw rod respectively through a first worm wheel and a second worm wheel. The distance between the two translation seats is adjusted through two sliding sleeve blocks. The plate is placed inside the two translation seats. At this time, rotate the rotating wheel to make the eccentric wheel drive the connecting rod to rotate eccentrically, adjust the distance between the first clamping cylinder and the second clamping cylinder, and clamp and limit the plate. Since both the first clamping cylinder and the second clamping cylinder are rotary cylinder structures, it can ensure that both ends of the plate normally recover towards the bending point during plate bending. Description of the drawings

[0017] Figure 1 is a three-dimensional schematic diagram of the bending processing table structure of the present utility model;

[0018] Figure 2 is Figure 1 a cross-sectional view from a perspective;

[0019] Figure 3 is Figure 2 a side view of the translation seat structure in a perspective;

[0020] Figure 4 is Figure 1 a top view of the bending processing table in a perspective;

[0021] Figure 5 is Figure 4 a cross-sectional view from a perspective.

[0022] In the figure: 1. Bending processing table; 2. Limit clamping structure; 201. Groove plate; 202. Translation seat; 203. Rotating wheel; 204. Eccentric wheel; 205. Connecting rod; 206. Limit component; 2061. First clamping cylinder; 2062. Second clamping cylinder; 207. Scale plate; 3. Adjusting component; 301. First threaded screw rod; 302. Second threaded screw rod; 303. Sliding sleeve block; 4. Worm gear; 5. Reduction motor; 6. Bending component; 601. Mounting frame; 602. Hydraulic cylinder; 603. Guide frame; 604. Bending die plate; 7. Lifting seat; 8. Infrared counting sensor; 9. PLC control panel; 10. Cylinder. Detailed implementation manners

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0024] Please refer to Figures 1-5 , a numerical control bending device, including a bending processing table 1, a limiting and clamping structure 2 is arranged on the top of the bending processing table 1, a groove chamber is opened inside the bending processing table 1, an adjusting component 3 is arranged inside the groove chamber, two worms 4 are rotatably connected inside the groove chamber, a speed reducing motor 5 is fixedly installed on the left side of the front surface of the bending processing table 1, the speed reducing motor 5 drives the worm 4 through a belt pulley, a bending component 6 is arranged on the top of the bending processing table 1, the bottom of a hydraulic cylinder 602 is movably connected with a hydraulic push rod, the hydraulic push rod pushes a lifting seat 7 and a bending die plate 604 to move downward, the bottom of the hydraulic push rod is fixedly connected with the lifting seat 7, an infrared counting sensor 8 is fixedly installed on the inner rear wall of the mounting frame 601, the infrared counting sensor 8 processes the counting of an infrared reflector on the back of the lifting seat 7, a PLC control panel 9 is fixedly installed on the left side of the mounting frame 601, the PLC control panel 9 is connected to a PLC control system, and a cylinder 10 is fixedly installed on the inner rear wall of the mounting frame 601, and the cylinder 10 drives a piston push rod to push materials.

[0025] The limiting and clamping structure 2 includes a groove plate 201 fixed on the top of the bending processing table 1, a translation seat 202 is slidably connected to the top of the bending processing table 1, a rotating wheel 203 is rotatably connected to the front surface of the translation seat 202, an eccentric wheel 204 is fixedly connected to the back of the rotating wheel 203, by rotating the rotating wheel 203, the eccentric wheel 204 drives a linkage rod 205, the back of the eccentric wheel 204 is rotatably connected to the linkage rod 205, a limiting component 206 is arranged inside the translation seat 202, and a scale plate 207 is fixedly connected to the top of the bending processing table 1, and the moving distance of the translation seat 202 can be conveniently viewed by using the scale plate 207.

[0026] The adjusting component 3 includes a first threaded lead screw 301 rotatably connected to the left inner wall of the groove chamber and a second threaded lead screw 302 rotatably connected to the right inner wall of the groove chamber. Sliding sleeve blocks 303 are threadedly connected to the outsides of the two first threaded lead screws 301 and the two second threaded lead screws 302. The worm 4 drives the first threaded lead screw 301 and the second threaded lead screw 302 to rotate mirror-image through a first worm gear and a second worm gear respectively, driving the two sliding sleeve blocks 303 to move towards or away from each other.

[0027] The bending assembly 6 includes a mounting frame 601 fixed to the top of the bending processing table 1. A hydraulic cylinder 602 is fixedly installed inside the mounting frame 601. Two guiding frames 603 are fixedly connected to the inner side of the mounting frame 601. The guiding frames 603 play a guiding role in the movement of the lifting seat 7. A bending die plate 604 is fixedly connected to the bottom of the lifting seat 7.

[0028] According to Figure 2 and Figure 4 and Figure 5 As shown, the reduction motor 5 drives two belt pulleys, and the two belt pulleys drive two worm gears 4. The two worm gears 4 mesh with the first worm wheels on two first threaded rods 301 and the second worm wheels on two second threaded rods 302, so that the two first threaded rods 301 and the two second threaded rods 302 rotate synchronously. By using the sliding sleeve block 303 to move towards or away from each other, the distance between the two translation seats 202 is adjusted.

[0029] According to Figure 2 and Figure 3 As shown, the limiting rod is inserted into the rotating wheel 203, so that the outer tooth ring meshes with the inner tooth layer to limit the rotating wheel 203, which is convenient for controlling the rotation of the rotating wheel 203. When the rotating wheel 203 is rotated, the eccentric wheel 204 drives the connecting rod 205 to rotate eccentrically, and the connecting rod 205 drives the first clamping cylinder 2061 to adjust the distance from the second clamping cylinder 2062 to clamp the placed plate.

[0030] According to Figure 2 As shown, the hydraulic cylinder 602 pushes the hydraulic push rod, so that the lifting seat 7 and the bending die plate 604 descend. At this time, the infrared reflecting sheet passes through the infrared emitting tube of the infrared counting sensor 8 once, and the infrared receiving port receives the signal once. When the bending die plate 604 presses down and bends, the lifting seat 7 is raised. At this time, the infrared reflecting sheet passes through the infrared emitting tube of the infrared counting sensor 8 again, and the infrared receiving port receives the signal once again. Every two times a group of signals are received, the cylinder 10 is controlled to drive the piston push rod to push and unload the bent plate.

[0031] In summary, for the numerical control bending device, according to the size of the sheet metal, the reduction motor 5 drives two worm gears 4 through belt pulleys. The two worm gears 4 drive the first lead screw 301 and the second lead screw 302 respectively through meshing with the first worm wheel and the second worm wheel. The distance between the two translation seats 202 is adjusted through the two sliding sleeve blocks 303. The sheet metal is placed inside the two translation seats 202. At this time, rotate the rotating wheel 203 to make the eccentric wheel 204 drive the connecting rod 205 to rotate eccentrically, adjust the distance between the first clamping cylinder 2061 and the second clamping cylinder 2062, and clamp and limit the sheet metal. Since both the first clamping cylinder 2061 and the second clamping cylinder 2062 are rotary cylinder structures, it can ensure that both ends of the sheet metal normally recover towards the bending point during the bending of the sheet metal. Since the hydraulic cylinder 602 pushes the lifting seat 7 and the bending die plate 604 downward through the hydraulic push rod for bending, at this time, the infrared reflection sheet on the back of the lifting seat 7 will reflect the infrared laser back to the infrared receiving port, and at this time, the first pass count is formed. When the hydraulic cylinder 602 pushes the lifting seat 7 and the bending die plate 604 upward through the hydraulic push rod, the infrared reflection sheet will reflect the infrared laser back to the infrared receiving port again, and at this time, the second pass count is formed. By setting the parameters of the infrared counting sensor 8, whenever two infrared reflection signals are received, the PLC control panel 9 controls the cylinder 10 to switch once, so as to automatically push the bent sheet metal away from the groove plate 201 by using the piston push rod, realizing the process of automatic blanking, and solving the problem that the numerical control bending machine in the above-mentioned background technology uses the method of pressing and fixing the sheet metal, which easily causes the two ends of the sheet metal to not recover normally during bending.

[0032] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover a non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the existence of additional identical elements in the process, method, article or device including the element.

[0033] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A numerical control bending device, comprising a bending processing table (1), characterized in that: A limiting and clamping structure (2) is arranged at the top of the bending processing table (1); The limiting and clamping structure (2) includes a groove plate (201) fixed to the top of the bending processing table (1). A translation seat (202) is slidably connected to the top of the bending processing table (1). A rotating wheel (203) is rotatably connected to the front of the translation seat (202). An eccentric wheel (204) is fixedly connected to the back of the rotating wheel (203). A connecting rod (205) is rotatably connected to the back of the eccentric wheel (204). A limiting component (206) is arranged inside the translation seat (202). A scale plate (207) is fixedly connected to the top of the bending processing table (1).

2. The numerical control bending device according to claim 1, characterized in that: A groove chamber is formed inside the bending processing table (1). An adjusting component (3) is arranged inside the groove chamber. The adjusting component (3) includes a first threaded lead screw (301) rotatably connected to the left inner wall of the groove chamber and a second threaded lead screw (302) rotatably connected to the right inner wall of the groove chamber. The number of both the first threaded lead screw (301) and the second threaded lead screw (302) is two. A first worm gear is coaxially fixed to the outer left end of each of the two first threaded lead screws (301). A second worm gear is coaxially fixed to the outer right end of each of the two second threaded lead screws (302).

3. The numerical control bending device according to claim 2, characterized in that: The thread layers of the two first threaded lead screws (301) and the thread layers of the two second threaded lead screws (302) are mirror-image structures of each other. Two worms (4) are rotatably connected inside the groove chamber. The outer side of one of the worms (4) meshes with the two first worm gears. The outer side of the other worm (4) meshes with the two second worm gears. Belt pulleys driven by belts are fixedly connected to the front ends of the two worms (4). A reduction motor (5) is fixedly installed on the left side of the front of the bending processing table (1). The output end of the reduction motor (5) is fixedly connected to the front end of one of the belt pulleys.

4. The numerical control bending device according to claim 3, characterized in that: Sliding sleeve blocks (303) are threadedly connected to the outside of the two first threaded lead screws (301) and the two second threaded lead screws (302). An inner tooth layer is arranged inside the rotating wheel (203). A limiting rod is inserted into the inside of the rotating wheel (203). An external tooth ring adapted to the inner tooth layer is arranged on the outer side of the limiting rod. Two horizontal grooves are formed on both the left side and the right side of the top of the groove chamber.

5. A numerical control bending device according to claim 1, characterized in that: Bearing blocks are fixedly installed on both the inner front wall and the inner rear wall of the translation seat (202). The limiting component (206) includes a first clamping cylinder (2061) rotatably connected to the inside of the two bearing blocks. Vertical grooves are formed on both the inner front wall and the inner rear wall of the translation seat (202). Lifting blocks are slidably connected to the inside of the two vertical grooves. A second clamping cylinder (2062) is rotatably connected to the opposite sides of the two lifting blocks. The connecting rod (205) is rotatably connected to the front of one of the lifting blocks at the end far from the eccentric wheel (204).

6. The numerical control bending device according to claim 1, wherein: A bending assembly (6) is provided on the top of the bending processing table (1). The bending assembly (6) includes a mounting frame (601) fixed to the top of the bending processing table (1). A hydraulic cylinder (602) is fixedly installed inside the mounting frame (601). A hydraulic push rod is movably connected to the bottom of the hydraulic cylinder (602). The bottom of the hydraulic push rod is fixedly connected to a lifting seat (7).

7. A numerical control bending device according to claim 6, characterized in that: Two guiding frames (603) are fixedly connected to the inner side of the mounting frame (601). Guiding lead screws are fixedly connected inside both of the two guiding frames (603). The left and right sides of the lifting seat (7) are respectively slidably connected to the outsides of the two guiding lead screws. A bending die plate (604) is fixedly connected to the bottom of the lifting seat (7). An infrared counting sensor (8) is fixedly installed on the inner rear wall of the mounting frame (601). An infrared transmitting tube and an infrared receiving port are arranged on the front of the infrared counting sensor (8).

8. The numerically controlled bending device according to claim 7, characterized in that: An infrared reflecting sheet is fixedly connected to the back of the lifting seat (7). A PLC control panel (9) is fixedly installed on the left side of the mounting frame (601). The infrared counting sensor (8) is signal-connected to the PLC control panel (9) through an infrared signal processing circuit. A cylinder (10) is fixedly installed on the inner rear wall of the mounting frame (601). A piston push rod is movably connected to the front of the cylinder (10). The front end of the piston push rod is horizontally aligned with the inner groove surface of the groove plate (201).

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