Pneumatic hinge cutter of flexible bending center machine

Abstract

The utility model belongs to the technical field of sheet metal bending equipment, and discloses a pneumatic hinge cutter of a flexible bending center machine, which comprises a hinge cutter holder, and a hinge female cutter is fixedly mounted on one side of the bottom surface of the hinge cutter holder. The pushing assembly is matched with rotation control of the rotating rod, a rotating and swinging mode is utilized under thrust, the connecting function of the connecting assembly is matched, movement control over a set of movable inclined block cutters is achieved, the inclined faces of the movable inclined block cutters are matched with the inclined faces of the movable auxiliary cutters, and the hinge main cutter and the movable auxiliary cutters are pushed away in the transverse advancing process; compared with a common hinge knife which freely falls to act, the hinge knife has the advantages that the reaction speed is greatly increased, a metal plate is not scratched and the plate is not shoveled, and compared with a traditional hinge knife which is driven in a cylinder mode, the hinge knife has the advantages that the stroke is saved, the stroke is short, the action is fast, and the working efficiency is improved. The action efficiency is greatly improved, and the use effect is good.

Description

Technical Field

[0001] The utility model belongs to the technical field of sheet metal bending equipment, in particular to a pneumatic hinge cutter for a flexible bending center machine. Background Art

[0002] A flexible bending center usually refers to a CNC bending machine with multi-axis control and flexible processing capabilities, which can complete complex metal sheet bending processing. Among them, a pneumatic hinge tool refers to a pneumatically driven hinge tool used in the metal processing process for cutting, trimming or forming metal materials.

[0003] In the prior art, there are three main types of pneumatic hinge tools for flexible bending center machines. One is free-fall, the second is pneumatic, and the third is electric. When free-fall action is used, it is easy to scratch the sheet metal when processing metal sheets, and rub against the sheet surface, causing large errors in the workpiece movement during processing; when pneumatic action is used, the same hinge tool cannot be used when the forming heights of different workpieces are inconsistent. When the pneumatic type is avoided, the maximum stroke range of the cylinder must be left, and the tool customized for high forming cannot avoid the workpiece with short forming; when driven by an electric servo motor, it is necessary to add servo motors, screw rods, racks and other devices. When the actual existing methods are applied to the bending center of sheet metal equipment, they cannot realize adaptive adjustment application well, and the bending and forming operation effect is not good. Summary of the invention

[0004] The utility model aims to provide a pneumatic hinge cutter for a flexible bending center machine to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme: a pneumatic hinge tool for a flexible bending center machine, comprising a hinge tool seat, a hinge master knife is fixedly installed on one side of the bottom surface of the hinge tool seat, and a movable auxiliary knife is slidably provided on the other side of the bottom surface of the hinge tool seat, and a movable bevel block knife is directly slidably provided on the hinge master knife and the movable auxiliary knife. A pushing component is sleeved on the back of the hinge tool seat, and the back of the hinge tool seat is fixedly connected with two mounting plates, and a No. 1 shaft is fixedly connected between the two mounting plates, and a rotating rod is rotatably sleeved on the outside of the No. 1 shaft, and the rotating rod is slidably connected to the pushing component, and a connecting component is movably connected between the bottom of the rotating rod and the movable bevel block knife, and a card slot is provided on the side of the hinge tool seat, and a card block is slidably sleeved on the inside of the card slot, and the card block is fixedly connected to the movable auxiliary knife, and an elastic reset component is provided in the card slot, and the card block is movably sleeved in the elastic reset component.

[0006] Preferably, the movable bevel block cutter comprises a bevel block cutter body, a slide plate and a connecting head, wherein the slide plate is fixedly connected to the side surface of the bevel block cutter body, and the connecting head is fixedly connected to the rear end of the bevel block cutter body.

[0007] Preferably, the elastic reset assembly includes a fixed rod, a spring and a baffle, the fixed rod is located inside the slot and fixedly connected to the hinge knife seat, the baffle is fixedly sleeved on the outer surface of the fixed rod and fixedly connected in the slot, one end of the spring is fixedly connected to the inner surface of the slot, the fixed rod is slidably sleeved with the block, and the other end of the spring is fixedly connected to the block.

[0008] Preferably, the pushing assembly includes a piston rod and a clamping rod, and one of a cylinder body, a hydraulic cylinder or an electric push rod, wherein the cylinder body, the hydraulic cylinder or the electric push rod is fixedly installed inside the hinge knife seat, the piston rod is movably installed at the end of the cylinder body, the hydraulic cylinder or the electric push rod, and the clamping rod is fixedly connected to the side of the piston rod.

[0009] Preferably, the front end of the piston rod is movably located at the upper end of the rotating rod, a limiting groove is provided on the side surface of the upper end of the rotating rod, and the clamping rod is slidably sleeved in the limiting groove.

[0010] Preferably, a sliding groove is provided on the side of the hinge master knife, the inner surface of the sliding groove is slidably connected to the slide plate, the length of the sliding groove is greater than the length of the slide plate, and the length of the hinge master knife is greater than the length of the movable bevel block knife.

[0011] Preferably, the connecting assembly includes a rotating plate, an adapting groove and a third shaft, the adapting groove is opened at one end of the rotating plate, the inner surface of the adapting groove is movably connected to the connecting head, the third shaft is fixedly connected in the adapting groove, and the third shaft is rotatably connected to the inside of the connecting head.

[0012] Preferably, a notch is provided at the lower end of the rotating rod, a No. 2 shaft is provided at the lower end of the rotating rod, the No. 2 shaft is located in the notch, and the No. 2 shaft is movably sleeved on one end of the rotating plate.

[0013] The beneficial effects of the utility model are as follows:

[0014] 1. The utility model realizes the movement control of a group of movable beveled block knives by utilizing the rotation control of the pushing component in cooperation with the rotating rod, and utilizes the rotation and swinging mode under pneumatic propulsion and the connecting function of the connecting component. The inclined surface of the movable beveled block knife is adapted to the inclined surface of the movable auxiliary knife, and the hinge mother knife and the movable auxiliary knife are pushed open during the lateral advancement to realize the extension of the tool, thereby adapting to different working bending requirements, greatly improving the adaptability of the bending hinge tool, and greatly improving the reaction speed compared with the ordinary free-falling hinge knife, without scratching the sheet metal plate and shoveling the plate. Compared with the hinge knife driven by the traditional cylinder form, it saves stroke, has a short stroke, and a fast action, greatly improving the action efficiency, and has a good use effect.

[0015] 2. The utility model realizes the movement control of the movable bevel knife by utilizing a pushing component in cooperation with a rotating rod and a connecting component, thereby realizing the opening and closing of the hinge mother knife and the movable auxiliary knife. It saves costs compared with an electrically-actuated hinge knife, does not need to be linked with a machine, and has a simple and convenient structure. During actual use, the sheet metal processing workpiece only needs to be lifted a distance of a plate thickness to perform a free contraction action. The structure of the built-in pushing component, in conjunction with the movable bevel knife of a shorter length, increases the gap in the tool, thereby reducing the overall weight of the tool. While reducing the weight, the labor intensity of workers when operating the tool change is reduced, and the replacement process is safer. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model;

[0017] Figure 2 It is a schematic diagram of the back side of the first embodiment of the utility model;

[0018] Figure 3 It is a bottom schematic diagram of the hinge knife seat of the utility model;

[0019] Figure 4 It is an exploded schematic diagram of the rotating rod and the connecting assembly of the utility model;

[0020] Figure 5 It is a schematic diagram of the connection between the movable auxiliary knife and the clamping block of the utility model;

[0021] Figure 6 It is a schematic diagram of the hinge mother knife of the utility model;

[0022] Figure 7 It is a schematic diagram of the movable bevel block cutter of the utility model;

[0023] Figure 8 It is a schematic diagram of the elastic reset assembly of the utility model;

[0024] Fig. 9 It is a schematic diagram of the back side of the second embodiment of the utility model;

[0025] Fig.10 It is a schematic back view of the third embodiment of the utility model.

[0026] In the figure: 1. Hinge knife holder; 2. Hinge mother knife; 3. Movable auxiliary knife; 4. Movable oblique block knife; 41. Oblique block knife body; 42. Slide plate; 43. Connector; 5. Push assembly; 51. Cylinder body; 52. Piston rod; 53. Clamping rod; 54. Hydraulic cylinder; 55. Electric push rod; 6. Mounting plate; 7. Axis No. 1; 8. Rotating rod; 9. Connecting assembly; 91. Rotating plate; 92. Adapter groove; 93. Axis No. 3; 10. Slide groove; 11. Clamping block; 12. Elastic reset assembly; 121. Fixed rod; 122. Spring; 123. Baffle; 13. Clamping groove; 14. Limiting groove; 15. Axis No. 2. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] like Figures 1 to 10 As shown, the embodiment of the utility model provides a pneumatic hinge tool for a flexible bending center machine, including a hinge tool seat 1, a hinge mother knife 2 is fixedly installed on one side of the bottom surface of the hinge tool seat 1, and a movable auxiliary knife 3 is slidably provided on the other side of the bottom surface of the hinge tool seat 1. The hinge mother knife 2 and the movable auxiliary knife 3 are directly slidably provided with a movable bevel knife 4, and a pushing component 5 is sleeved on the back of the hinge tool seat 1. Two mounting plates 6 are fixedly connected to the back of the hinge tool seat 1, and a No. 1 shaft 7 is fixedly connected between the two mounting plates 6. A rotating rod 8 is rotatably sleeved on the outside of the No. 1 shaft 7, and the rotating rod 8 is slidably connected to the pushing component 5. A connecting component 9 is movably connected between the bottom of the rotating rod 8 and the movable bevel knife 4, and a sliding groove 13 is opened on the side of the hinge tool seat 1. A card block 11 is slidably sleeved inside the sliding groove 13. The card block 11 is fixedly connected to the movable auxiliary knife 3, and an elastic reset component 12 is provided in the card groove 13, and the card block 11 is movably sleeved in the elastic reset component 12.

[0029] Embodiment 1: Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8As shown, during the bending process, the machine system of the flexible bending center sends a command to the solenoid valve, and the solenoid valve conducts gas, and the gas reaches the pushing component 5 inside the hinge knife seat 1, and the piston rod 52 in the pushing component 5 is actuated. As the piston rod 52 moves on the inner side of the top of the rotating rod 8, the clamping rod 53 on the side of the piston rod 52 slides along the limiting groove 14, so that the lower rotating rod 8 is pushed to rotate around the No. 1 axis 7, so that the lower end of the rotating rod 8 drives the connecting component 9 to swing, and the connecting component 9 is connected with the connecting head 43 through the rotation sleeve of the No. 3 axis 93, so that the movable bevel block knife 4 is pushed to move forward, so that the movable bevel block knife 4 slides along the slide groove 10 through the slide plate 42, and moves between the hinge mother knife 2 and the movable auxiliary knife 3 and props the hinge mother knife 2 and the movable auxiliary knife 3 open. The movable auxiliary knife 3 is moved, and at this time the block 11 on the top of the movable auxiliary knife 3 pulls the spring 122 to slide in the slot 13, and after reaching the fully expanded state, the plate is pressed down, and the equipment is bent; after the bending process, the internal ventilation of the pushing component 5 is turned off, and the piston rod 52 is reset and contracted by the built-in spring of the cylinder body 51, pulling the rotating rod 8 to rotate in the opposite direction to reset, and as the connecting component 9 follows the rotating rod 8 to reset, the movable bevel knife 4 is reset and withdrawn from between the hinge mother knife 2 and the movable auxiliary knife 3, the spring 122 in the elastic reset component 12 contracts, pulling the block 11 to reset quickly, so that the movable auxiliary knife 3 is reset together and reaches the non-working state, and then lifted to avoid the workpiece, and the next process is carried out, and the processing is continued and so on until a workpiece product is completed.

[0030] Firstly, by utilizing the pushing component 5 to cooperate with the rotation control of the rotating rod 8, the rotation and swinging method is used under pneumatic propulsion, and the connecting function of the connecting component 9 is cooperated to realize the movement control of a group of movable bevel block knives 4. The inclined surface of the movable bevel block knife 4 is adapted to the inclined surface of the movable auxiliary knife 3, and the hinge mother knife 2 and the movable auxiliary knife 3 are pushed open during the lateral advancement to realize the extension of the tool, thereby adapting to different working bending requirements, greatly improving the adaptability of the bending hinge tool, and compared with the hinge knife of ordinary free fall action, the reaction speed is greatly improved, and the sheet metal plate is not scratched or shoveled. Compared with the hinge knife driven by the traditional cylinder form, it saves stroke, has a short stroke, and a fast action, which greatly improves the action efficiency and has a good use effect.

[0031] In addition, the movement of the movable bevel knife 4 is controlled by utilizing the pushing component 5 in cooperation with the rotating rod 8 and the connecting component 9, thereby realizing the opening and closing of the hinge master knife 2 and the movable auxiliary knife 3. This saves costs compared to a cylinder direct-driven hinge knife, does not require linkage with a machine, and has a simple and convenient structure. During actual use, the sheet metal processing workpiece only needs to be lifted a distance of a plate thickness to perform a free contraction action. The structure of the built-in pushing component 5, in combination with the shorter movable bevel knife 4, increases the tool gap, thereby achieving a reduction in the overall weight of the tool. While reducing the weight, the labor intensity of workers when operating the tool change is reduced, and the replacement process is safer.

[0032] The movable bevel block cutter 4 comprises a bevel block cutter body 41 , a slide plate 42 and a connector 43 . The slide plate 42 is fixedly connected to the side surface of the bevel block cutter body 41 , and the connector 43 is fixedly connected to the rear end of the bevel block cutter body 41 .

[0033] By utilizing the sliding connection between the slide plate 42 and the slide groove 10, the stable sliding control of the movable bevel knife 4 is maintained, and the connecting head 43 is used for active connection with the connecting component 9. The bevel knife body 41 itself is a wedge-shaped block, and the hinge mother knife 2 and the movable auxiliary knife 3 on both sides are pushed open through the gradual spacing on both sides.

[0034] Among them, the elastic reset component 12 includes a fixed rod 121, a spring 122 and a baffle 123. The fixed rod 121 is located inside the slot 13 and is fixedly connected to the hinge knife seat 1. The baffle 123 is fixedly sleeved on the outer surface of the fixed rod 121 and is fixedly connected in the slot 13. One end of the spring 122 is fixedly connected to the inner surface of the slot 13. The fixed rod 121 is slidably sleeved with the block 11, and the other end of the spring 122 is fixedly connected to the block 11.

[0035] The elastic reset component 12 is utilized to realize the elastic reset of the movable auxiliary knife 3 after stable sliding. When pushed open, the block 11 is utilized to stretch the spring 122, so that when the driving force is removed, the spring 122 is utilized to elastically reset the movable auxiliary knife 3, so that the movable auxiliary knife 3 is quickly reset and approaches the hinge mother knife 2. The block 11 and the slot 13 are adapted for sliding sleeve engagement to maintain stable sliding and avoid torsional deviation. The fixed rod 121 maintains the guidance of the block 11.

[0036] Among them, the pushing assembly 5 includes a cylinder body 51, a piston rod 52 and a clamping rod 53. The cylinder body 51 is fixedly installed inside the hinge knife seat 1, the piston rod 52 is movably installed at the end of the cylinder body 51, and the clamping rod 53 is fixedly connected to the side of the piston rod 52. The front end of the piston rod 52 is movably located at the upper end of the rotating rod 8. A limiting groove 14 is provided on the side of the upper end of the rotating rod 8, and the clamping rod 53 is slidably sleeved in the limiting groove 14.

[0037] The pushing assembly 5 is used to push and swing the rotating rod 8 , and the sliding of the clamping rod 53 in the limiting groove 14 is coordinated to ensure that the lateral movement of the piston rod 52 is maintained under the pushing of the rotating rod 8 .

[0038] Among them, a sliding groove 10 is opened on the side of the hinge mother knife 2, and the inner surface of the sliding groove 10 is slidably connected with the slide plate 42. The length of the sliding groove 10 is greater than the length of the slide plate 42, and the length of the hinge mother knife 2 is greater than the length of the movable bevel block knife 4.

[0039] By utilizing the sliding sleeve connection between the slide groove 10 and the slide plate 42, the stable sliding of the movable bevel knife 4 is maintained, and the weight is reduced while limiting the length, and the space occupied by the movement is reduced.

[0040] Among them, the connecting component 9 includes a rotating plate 91, an adapting groove 92 and a third shaft 93. The adapting groove 92 is opened at one end of the rotating plate 91. The inner surface of the adapting groove 92 is movably connected to the connecting head 43. The third shaft 93 is fixedly connected in the adapting groove 92, and the third shaft 93 is rotatably connected to the inside of the connecting head 43.

[0041] By utilizing the connecting assembly 9 to coordinate the movable connection between the rotating rod 8 and the movable bevel block knife 4, the stable lateral movement of the movable bevel block knife 4 is ensured.

[0042] The lower end of the rotating rod 8 is provided with a notch, and the lower end of the rotating rod 8 is provided with a second shaft 15 . The second shaft 15 is located in the notch, and the second shaft 15 is movably sleeved on one end of the rotating plate 91 .

[0043] Embodiment 2: Figure 1 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Fig. 9 As shown, during the bending process, the flexible bending center machine system sends a command to the solenoid valve, and the solenoid valve conducts the hydraulic oil. The hydraulic oil reaches the pushing component 5 inside the hinge knife seat 1, and the piston rod 52 in the pushing component 5 moves. As the piston rod 52 moves on the inner side of the top of the rotating rod 8, the clamping rod 53 on the side of the piston rod 52 slides along the limiting groove 14, so that the lower rotating rod 8 is pushed to rotate around the No. 1 axis 7, so that the lower end of the rotating rod 8 drives the connecting component 9 to swing, and the connecting component 9 is connected with the connecting head 43 through the rotation sleeve of the No. 3 axis 93, so that the movable bevel block knife 4 is pushed to move forward, so that the movable bevel block knife 4 slides along the slide groove 10 through the slide plate 42, and moves between the hinge mother knife 2 and the movable auxiliary knife 3 and props up the hinge mother knife 2. And the movable auxiliary knife 3, and at this time the block 11 on the top of the movable auxiliary knife 3 pulls the spring 122 to slide in the slot 13, and presses down the plate after reaching the fully expanded state, and the equipment is bent; after the bending process, the internal fluid supply of the pushing component 5 is turned off, and the piston rod 52 is reset and contracted by the hydraulic cylinder 54, pulling the rotating rod 8 to rotate in the opposite direction to reset, and as the connecting component 9 follows the rotating rod 8 to reset, the movable bevel knife 4 is reset and withdrawn from between the hinge mother knife 2 and the movable auxiliary knife 3, the spring 122 in the elastic reset component 12 contracts, pulling the block 11 to reset quickly, so that the movable auxiliary knife 3 is reset together, and reaches the non-working state, and then lifts up to avoid the workpiece, and proceeds to the next step, and continues processing and so on until a workpiece product is completed.

[0044] Firstly, by utilizing the pushing component 5 to cooperate with the rotation control of the rotating rod 8, the rotation and swinging method is used under the hydraulic push, and the connecting function of the connecting component 9 is cooperated to realize the movement control of a group of movable bevel block knives 4. The inclined surface of the movable bevel block knife 4 is adapted to the inclined surface of the movable auxiliary knife 3, and the hinge mother knife 2 and the movable auxiliary knife 3 are pushed open during the lateral advancement to realize the extension of the tool, thereby adapting to different working bending requirements, greatly improving the adaptability of the bending hinge tool, and greatly improving the reaction speed compared with the ordinary free-fall hinge knife, without scratching the sheet metal plate or shoveling the plate. Compared with the hinge knife driven by the traditional hydraulic form, it saves stroke, has a short stroke, and a fast action, which greatly improves the action efficiency and has a good use effect.

[0045] Among them, the pushing assembly 5 includes a hydraulic cylinder 54, a piston rod 52 and a clamping rod 53. The hydraulic cylinder 54 is fixedly installed inside the hinge knife seat 1, the piston rod 52 is movably installed at the end of the hydraulic cylinder 54, the clamping rod 53 is fixedly connected to the side of the piston rod 52, and the front end of the piston rod 52 is movably located at the upper end of the rotating rod 8. A limiting groove 14 is opened on the side of the upper end of the rotating rod 8, and the clamping rod 53 is slidably sleeved in the limiting groove 14.

[0046] The pushing assembly 5 is used to push and swing the rotating rod 8 , and the sliding of the clamping rod 53 in the limiting groove 14 is coordinated to ensure that the lateral movement of the piston rod 52 is maintained under the pushing of the rotating rod 8 .

[0047] Embodiment three:

[0048] like Figure 1 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Fig.10As shown, during the bending process, the flexible bending center machine system sends an instruction and sends a signal to the motor control module, which feeds back the signal to the electric push rod 55 to control the operation of the pushing component 5 inside the hinge knife seat 1, so that the piston rod 52 in the pushing component 5 moves. As the piston rod 52 moves on the inner side of the top of the rotating rod 8, the clamping rod 53 on the side of the piston rod 52 slides along the limiting groove 14, so that the lower rotating rod 8 is pushed to rotate around the No. 1 axis 7, so that the lower end of the rotating rod 8 drives the connecting component 9 to swing, and the connecting component 9 is connected to the connecting head 43 through the rotation sleeve of the No. 3 axis 93, so that the movable bevel block knife 4 is pushed forward, so that the movable bevel block knife 4 slides along the slide groove 10 through the slide plate 42, and moves between the hinge mother knife 2 and the movable auxiliary knife 3 and props the hinge mother knife 2 and the movable auxiliary knife 3 open. Auxiliary knife 3, and at this time the block 11 on the top of the movable auxiliary knife 3 pulls the spring 122 to slide in the slot 13, and presses down the plate after reaching the fully expanded state, and the equipment bends; after the bending process, the system re-sends the command to the motor control module to control the electric push rod 55 motor to reverse, and the piston rod 52 is reset and contracted by the internal motor of the electric push rod 55, pulling the rotating rod 8 to rotate in the opposite direction to reset, and as the connecting component 9 follows the rotating rod 8 to reset, the movable bevel knife 4 is reset and withdrawn from between the hinge mother knife 2 and the movable auxiliary knife 3, the spring 122 in the elastic reset component 12 contracts, and the block 11 is pulled to reset quickly, so that the movable auxiliary knife 3 is reset together and reaches the non-working state, and then lifted to avoid the workpiece, and the next process is carried out, and the processing is continued and so on until a workpiece product is completed.

[0049] Firstly, by utilizing the pushing component 5 to cooperate with the rotation control of the rotating rod 8, the rotation and swinging method is used under the electric control, and the connecting function of the connecting component 9 is cooperated to realize the movement control of a group of movable bevel block knives 4. The inclined surface of the movable bevel block knife 4 is adapted to the inclined surface of the movable auxiliary knife 3, and the hinge mother knife 2 and the movable auxiliary knife 3 are pushed open during the lateral advancement to realize the extension of the tool, thereby adapting to different working bending requirements, greatly improving the adaptability of the bending hinge tool, and greatly improving the reaction speed compared with the ordinary free-fall hinge knife, without scratching the sheet metal plate or shoveling the plate. Compared with the hinge knife driven by the traditional hydraulic form, it saves stroke, has a short stroke, and a fast action, which greatly improves the action efficiency and has a good use effect.

[0050] Among them, the pushing assembly 5 includes an electric push rod 55, a piston rod 52 and a clamping rod 53. The electric push rod 55 is fixedly installed inside the hinge knife seat 1, the piston rod 52 is movably installed at the end of the electric push rod 55, and is connected to the push rod motor transmission, the clamping rod 53 is fixedly connected to the side of the piston rod 52, and the front end of the piston rod 52 is movably located at the upper end of the rotating rod 8. A limiting groove 14 is opened on the side of the upper end of the rotating rod 8, and the clamping rod 53 is slidably sleeved in the limiting groove 14.

[0051] The pushing assembly 5 is used to push and swing the rotating rod 8 , and the sliding of the clamping rod 53 in the limiting groove 14 is coordinated to ensure that the lateral movement of the piston rod 52 is maintained under the pushing of the rotating rod 8 .

[0052] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pneumatic hinge tool for a flexible bending center machine, comprising a hinge tool holder (1), characterized in that: A hinge master knife (2) is fixedly mounted on one side of the bottom surface of the hinge knife seat (1), a movable auxiliary knife (3) is slidably mounted on the other side of the bottom surface of the hinge knife seat (1), a movable bevel knife (4) is directly slidably mounted on the hinge master knife (2) and the movable auxiliary knife (3), a pushing assembly (5) is sleeved on the back of the hinge knife seat (1), two mounting plates (6) are fixedly connected to the back of the hinge knife seat (1), a No. 1 shaft (7) is fixedly connected between the two mounting plates (6), and the outer rotatable sleeve of the No. 1 shaft (7) is A rotating rod (8) is slidably connected to the pushing assembly (5); a connecting assembly (9) is movably connected between the bottom of the rotating rod (8) and the movable inclined block knife (4); a clamping groove (13) is provided on the side of the hinge knife seat (1); a clamping block (11) is slidably sleeved inside the clamping groove (13); the clamping block (11) is fixedly connected to the movable auxiliary knife (3); an elastic reset assembly (12) is provided in the clamping groove (13); the clamping block (11) is movably sleeved in the elastic reset assembly (12).

2. A pneumatic hinge tool for a flexible bending center machine according to claim 1, characterized in that: The movable bevel blade (4) comprises a bevel blade body (41), a slide plate (42) and a connecting head (43), wherein the slide plate (42) is fixedly connected to the side surface of the bevel blade body (41), and the connecting head (43) is fixedly connected to the rear end of the bevel blade body (41).

3. A pneumatic hinge tool for a flexible bending center machine according to claim 1, characterized in that: The elastic reset assembly (12) comprises a fixed rod (121), a spring (122) and a baffle (123); the fixed rod (121) is located inside the clamping slot (13) and is fixedly connected to the hinge knife seat (1); the baffle (123) is fixedly sleeved on the outer surface of the fixed rod (121) and is fixedly connected to the clamping slot (13); one end of the spring (122) is fixedly connected to the inner surface of the clamping slot (13); the fixed rod (121) is slidably sleeved with the clamping block (11); and the other end of the spring (122) is fixedly connected to the clamping block (11).

4. A pneumatic hinge tool for a flexible bending center machine according to claim 1, characterized in that: The pushing assembly (5) comprises a piston rod (52) and a clamping rod (53), and one of a cylinder body (51), a hydraulic cylinder (54) or an electric push rod (55); the cylinder body (51), the hydraulic cylinder (54) or the electric push rod (55) is fixedly installed inside the hinge knife seat (1); the piston rod (52) is movably installed at the end of the cylinder body (51), the hydraulic cylinder (54) or the electric push rod (55); and the clamping rod (53) is fixedly connected to the side of the piston rod (52).

5. A pneumatic hinge tool for a flexible bending center machine according to claim 4, characterized in that: The front end of the piston rod (52) is movably located at the upper end of the rotating rod (8), a limiting groove (14) is provided on the side surface of the upper end of the rotating rod (8), and the clamping rod (53) is slidably sleeved in the limiting groove (14).

6. A pneumatic hinge tool for a flexible bending center machine according to claim 1, characterized in that: A slide groove (10) is provided on the side of the hinge master knife (2), and the inner surface of the slide groove (10) is slidably connected to the slide plate (42). The length of the slide groove (10) is greater than the length of the slide plate (42), and the length of the hinge master knife (2) is greater than the length of the movable bevel knife (4).

7. A pneumatic hinge tool for a flexible bending center machine according to claim 1, characterized in that: The connecting assembly (9) comprises a rotating plate (91), an adapting groove (92) and a third shaft (93); the adapting groove (92) is provided at one end of the rotating plate (91); the inner surface of the adapting groove (92) is movably sleeved with the connecting head (43); the third shaft (93) is fixedly connected in the adapting groove (92); and the third shaft (93) is rotatably sleeved inside the connecting head (43).

8. The pneumatic hinge tool for a flexible bending center machine according to claim 1, characterized in that: A notch is provided at the lower end of the rotating rod (8), and a second shaft (15) is provided at the lower end of the rotating rod (8). The second shaft (15) is located in the notch, and the second shaft (15) is movably sleeved on one end of the rotating plate (91).

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