Bending center tool changing mechanism

Abstract

The utility model discloses a bending center tool changing mechanism, including upper sword beam, rotary pressure knife assembly, horizontal shift drive unit, rotary pressure knife assembly includes horizontal shift seat, tool changing assembly and positioning assembly, and tool changing assembly and positioning assembly are located in horizontal shift seat, and tool changing assembly includes rotary pressure knife group and drive rotary pressure knife up and down turnover's turnover motor, and positioning assembly includes hook seat and positioning motor. The turnover motor and turnover motor of the present application all adopt same type drive unit, and convenient control, and the output shaft of positioning motor and rotating shaft are coaxial arrangement, make whole positioning assembly transverse extension instead of in front -back direction extension, and space layout is reasonable, is favorable to reduce the occupation space of whole bending center tool changing mechanism in front -back direction and does not increase the occupation space of whole bending center tool changing mechanism in left and right direction, and other structure is conveniently laid out.

Description

Technical Field

[0001] This utility model relates to the field of bending machine technology, and in particular to a bending center tool changing mechanism. Background Technology

[0002] A bending machine is a machine used to bend sheet metal. It includes a clamping mechanism that presses the workpiece together. This clamping mechanism comprises an upper blade beam, an upper pressure blade connected to the lower end of the upper blade beam, a lower fixed blade located below and corresponding to the upper pressure blade, and a drive mechanism for moving the upper blade beam and the upper pressure blade vertically. The upper pressure blade moves downwards to press the workpiece to be bent onto the lower fixed blade. When bending workpieces of different lengths or the same workpiece with different bending edges, manual tool changing is generally used, resulting in low bending efficiency and cumbersome tool changing operations.

[0003] To improve tool changing efficiency, some bending machines use automatic tool changing systems, which are equipped with rotary and translational pressure groups that can automatically adjust the number of tools to adjust the working width of the upper pressure tool on the upper tool beam. However, automatic tool changing systems require multiple power units for driving. In particular, the tool gripping structure is usually located on the upper side of the upper tool beam, requiring a mounting bracket to install the tool gripping structure, which occupies a lot of space, is not reasonable in layout, and is not conducive to setting up other structures. In addition, the difficulty of control is increased by using different power units. Utility Model Content

[0004] The purpose of this utility model is to provide a bending center tool changing mechanism to solve one or more technical problems existing in the prior art, and at least provide a beneficial option or create conditions.

[0005] The technical solution adopted to solve the above-mentioned technical problems is as follows:

[0006] This utility model provides a bending center tool changing mechanism, including an upper tool beam, a rotary pressure tool assembly, and a transverse drive unit. The rotary pressure tool assembly includes a transverse base, a tool changing assembly, and a positioning assembly. The tool changing assembly and the positioning assembly are located on the transverse base. The tool changing assembly includes a rotary pressure tool group and a flipping motor that drives the rotary pressure tool to rotate up and down. The positioning assembly includes a hook base and a positioning motor. The hook base has a snap-fit ​​edge and a rotating shaft. The rotating shaft is hinged to the transverse base. The positioning motor is driven by the rotating shaft. The output shaft of the positioning motor is coaxial with the rotating shaft. The rotary pressure tool group includes multiple rotary pressure tools. The end of each rotary pressure tool has a flange. When the rotary pressure tool swings upward, the hook base swings downward so that the snap-fit ​​edge engages and locks with the flange of the rotary pressure tool. The transverse drive unit is located on the upper tool beam and is used to drive the transverse base to move laterally.

[0007] The beneficial effects of this utility model are:

[0008] The flip motor flips the unused rotary pressure knife upwards as needed, and the positioning motor drives the hook seat to swing downwards, locking the upward-flipped rotary pressure knife in place. When the rotary pressure knife is needed, the positioning motor drives the hook seat to swing upwards to release the locking of the upward-flipped rotary pressure knife, and the flip motor flips the rotary pressure knife downwards. Both the flip motor and the rotary pressure knife in this application use the same type of drive unit, facilitating control. Furthermore, the output shaft of the positioning motor is coaxial with the rotation shaft, allowing the entire positioning assembly to extend laterally rather than longitudinally. This results in a rational spatial layout, reducing the space occupied by the entire bending center tool changing mechanism in the longitudinal direction without increasing its lateral space, thus facilitating the layout of other structures.

[0009] As a further improvement to the above technical solution, the tool changing assembly also includes a insertion rod and an insertion rod motor mounted on the transverse sliding seat. The insertion rod motor is used to drive the insertion rod to move left and right and can be inserted into the through holes of the multiple rotating pressure knives. The flipping motor is used to drive the insertion rod to flip, thereby causing the rotating pressure knives to flip.

[0010] As a further improvement to the above technical solution, the tool changing assembly also includes a lead screw drive structure, which includes a lead screw rotatably mounted on the transverse sliding seat and a nut seat fixed relative to the insertion rod. The insertion rod motor is driven by the lead screw, the nut seat is slidably mounted on the transverse sliding seat, and the lead screw and the nut seat are threadedly driven together.

[0011] As a further improvement to the above technical solution, the flipping motor is driven by a rotating shaft, the nut seat is provided with a moving block, the moving block is slidably disposed on the rotating shaft, the insertion rod is provided with a connecting block, the moving block is engaged with the connecting block, the connecting block is slidably disposed on the rotating shaft, and the connecting block and the rotating shaft are relatively fixed in the circumferential direction so that the flipping motor drives the insertion rod to flip, and the rotating shaft, lead screw and insertion rod are coaxially arranged.

[0012] As a further improvement to the above technical solution, the rotating shaft is provided with a fixing block, the fixing block is provided with a through hole, and the insertion rod passes through the through hole.

[0013] As a further improvement to the above technical solution, the transverse support is provided with a second sensor, which is used to sense the movement stroke of the nut seat.

[0014] As a further improvement to the above technical solution, the rotating shaft and the lead screw are arranged at intervals, and the transverse drive unit, the insertion rod motor, and the flipping motor are arranged at intervals.

[0015] As a further improvement to the above technical solution, the transverse sliding seat is slidably disposed on the upper blade beam.

[0016] As a further improvement to the above technical solution, the transverse sliding seat is provided with a mounting block, the rotating shaft is hinged to the mounting block, and a plurality of support plates are provided between the mounting block and the transverse sliding seat, with the plurality of support plates located at the bottom of the mounting block.

[0017] As a further improvement to the above technical solution, the upper blade beam is equipped with a first sensor, which is used to sense the movement stroke of the transverse sliding seat. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0019] Figure 1 This is a schematic diagram of an embodiment of a bending center tool changing mechanism provided by this utility model, wherein the six arrows represent forward, backward, left, right, upward and downward directions respectively;

[0020] Figure 2 This is a schematic diagram of an embodiment of a bending center tool changing mechanism provided by this utility model, wherein the six arrows represent forward, backward, left, right, upward and downward directions respectively;

[0021] Figure 3 This is a schematic diagram of an embodiment of a bending center tool changing mechanism provided by this utility model, wherein the six arrows represent forward, backward, left, right, upward and downward directions respectively;

[0022] Figure 4 yes Figure 3 An enlarged view of A in the image.

[0023] Figure label:

[0024] Upper blade beam 100, rotary pressing blade assembly 200, transverse shift seat 210, blade changing assembly 220, rotary pressing blade group 221, flip motor 222, insertion rod 223, connecting block 2231, insertion rod motor 224, lead screw 225, nut seat 226, moving block 2261, rotating shaft 227, fixing block 228, positioning assembly 230, hook seat 231, snap-fit ​​edge 2311, positioning motor 232, mounting block 240, support plate 250, transverse shift drive unit 300, second sensor 400, first sensor 500. Detailed Implementation

[0025] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0026] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationships based on the directional or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] In the description of this utility model, if there are words such as "several", they mean one or more, "multiple" means two or more, "greater than", "less than", "exceeding" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself.

[0028] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0029] Reference Figures 1 to 4 The bending center tool changing mechanism of this utility model is implemented in the following embodiment:

[0030] The bending center tool changing mechanism includes an upper tool beam 100, a rotary pressing tool assembly 200, and a transverse drive unit 300. The upper tool beam 100 drives the rotary pressing tool assembly 200, the transverse drive unit 300, and other tools of the upper tool beam 100 to press down and bend the workpiece. The rotary pressing tool assembly 200 is used to automatically adjust the number of rotary pressing tools. The transverse drive unit 300 drives the rotary pressing tool assembly 200 to move left and right to move the rotary pressing tools to the required position for bending, so as to bend workpieces of different lengths or the same workpiece with different lengths.

[0031] The rotary cutting tool assembly 200 includes a transverse support 210, a tool changing assembly 220, and a positioning assembly 230. The tool changing assembly 220 and the positioning assembly 230 are disposed on the transverse support 210. A transverse drive unit 300 is disposed on the upper cutting beam 100. The transverse drive unit 300 drives the transverse support 210 to move laterally, thereby moving the tool changing assembly 220 and the positioning assembly 230 laterally. To improve movement stability, the upper cutting beam 100 is provided with two sliding rails extending laterally, and the transverse support 210 is slidably disposed on the sliding rails. The transverse drive unit 300 is a hydraulic cylinder. In some other embodiments, the transverse drive unit 300 may also be a servo motor, hydraulic cylinder, or other drive unit.

[0032] The tool changing assembly 220 includes a rotary pressure tool group 221 and a transmission structure consisting of a flipping motor 222, an insertion rod 223, an insertion rod motor 224, and a lead screw 225 for driving the rotary pressure tools to flip up and down. The rotary pressure tool group 221 includes multiple rotary pressure tools arranged in an array. Each rotary pressure tool has an insertion hole, which corresponds to the insertion rod 223. When the rotary pressure tool needs to be flipped upward, the insertion rod motor 224 drives the insertion rod 223 to move to the right, inserting the insertion rod 223 into the rotary pressure tool to be flipped. The flipping motor 222 then drives the insertion rod 223 to move, flipping the rotary pressure tool upward.

[0033] The insertion rod motor 224 is mounted on the transverse sliding seat 210. The lead screw 225 transmission structure includes a lead screw 225 rotatably mounted on the transverse sliding seat 210 and a nut seat 226 fixed relative to the insertion rod 223. The insertion rod motor 224 is drivenly connected to the lead screw 225. The nut seat 226 is slidably mounted on the transverse sliding seat 210. The lead screw 225 and the nut seat 226 are threadedly connected. The lead screw 225 extends left and right. The nut seat 226 is provided with a moving block 2261. The insertion rod 223 is provided with a connecting block 2231. The moving block 2261 is provided with a groove, and the connecting block 2231 is engaged in the groove. The rotating motor 222 is connected to the rotating shaft 227, which extends to the left and right and is located below the lead screw 225. The moving block 2261 is slidably disposed on the rotating shaft 227, and the connecting block 2231 is slidably disposed on the rotating shaft 227. The connecting block 2231 and the rotating shaft 227 are relatively fixed in the circumferential direction, so that the rotating motor 222 drives the insertion rod 223 to rotate. The rotating shaft 227, the lead screw 225, and the insertion rod 223 are coaxially arranged. In order to improve stability, the rotating shaft 227 is provided with multiple extension clips at intervals in the ring. The connecting block 2231 is provided with a snap-fit ​​groove that matches the extension clips.

[0034] In addition, the rotating shaft 227 is provided with a fixing block 228. The fixing block 228 rotates around the rotating shaft 227 under the drive of the connecting block 2231. The fixing block 228 is provided with a through hole through which the insertion rod 223 passes. When the insertion rod 223 rotates, the fixing block 228 rotates accordingly. When the insertion rod 223 moves left and right, the fixing block 228 remains stationary. The insertion rod 223 slides in the through hole, which improves the stability and support strength of the insertion rod 223.

[0035] When selecting a tool, the insert rod motor 224 drives the nut seat 226 to move to the right. The moving block 2261 on the nut seat 226 moves accordingly to the right, causing the connecting block 2231 on the insert rod 223 to move to the right. The insert rod 223 inserts into the through holes of multiple rotary pressure tools. The number of through holes the insert rod 223 inserts into is controlled by the travel distance of the insert rod 223. The greater the travel distance to the right, the more rotary pressure tools are selected. Then, the flip motor 222 drives the rotating shaft 227 to rotate. The connecting block 2231 on the insert rod 223 rotates accordingly, causing the insert rod 223 and the rotary pressure tools on the insert rod 223 to rotate, completing the automatic tool selection.

[0036] The positioning component 230 includes a hook seat 231 and a positioning motor 232. The hook seat 231 has a snap-fit ​​edge 2311 and a rotating shaft. The rotating shaft is hinged to the transverse seat 210. The positioning motor 232 is connected to the rotating shaft. The output shaft of the positioning motor 232 is coaxially arranged with the rotating shaft. The rotary pressure knife assembly 221 includes multiple rotary pressure knives. The end of each rotary pressure knife has a flange. When the rotary pressure knife swings upward, the hook seat 231 swings downward so that the snap-fit ​​edge 2311 engages and locks with the flange of the rotary pressure knife.

[0037] The flip motor 222 flips the unused rotary pressure knife upwards as needed, and the positioning motor 232 drives the hook seat 231 to swing downwards, locking and securing the upward-flipped rotary pressure knife. When the rotary pressure knife is needed, the positioning motor 232 drives the hook seat 231 to swing upwards to release the locking of the upward-flipped rotary pressure knife, and the flip motor 222 flips the rotary pressure knife downwards. Both the flip motor 222 and the rotating motor 232 in this application use the same type of drive unit, facilitating control. Furthermore, the output shaft of the positioning motor 232 is coaxially arranged with the rotating shaft, allowing the entire positioning assembly 230 to extend laterally rather than longitudinally. This results in a reasonable spatial layout, reducing the space occupied by the entire bending center tool changing mechanism in the longitudinal direction without increasing its lateral space, and facilitating the layout of other structures.

[0038] In the process of further design optimization, the structure of the transverse shift seat 210 was enhanced and improved. A mounting block 240 was specially provided on the transverse shift seat 210, and the rotating shaft is securely mounted on the mounting block 240 via a hinge. To ensure a more robust and reliable connection between the mounting block 240 and the transverse shift seat 210, multiple support plates 250 were added to the bottom of the mounting block 240. These support plates 250 are evenly distributed, effectively dispersing the stress generated by the rotating shaft during operation, significantly improving the structural strength and stability of the entire transverse shift seat 210, thereby ensuring the reliability and safety of the equipment during long-term operation.

[0039] In addition, to achieve precise control of the travel of the nut seat 226, a second sensor 400 is added to the transverse support 210. This sensor can monitor the movement position of the nut seat 226 in real time and feed the data back to the control system so as to adjust the motion state of the nut seat 226 in a timely manner, ensuring that the equipment operates accurately according to the preset parameters, thereby improving the processing accuracy and efficiency.

[0040] Simultaneously, a first sensor 500 is also installed on the upper cutter beam 100. The main function of this sensor is to sense the travel distance of the transverse slide 210. By monitoring the position information of the transverse slide 210 in real time, the control system can precisely control the relative movement between the upper cutter beam 100 and the transverse slide 210, achieving more precise cutting or processing operations. This improvement not only enhances the automation level of the equipment but also further improves the quality and efficiency of processing, bringing significant economic benefits to production.

[0041] It should be noted that this embodiment uses the bending center tool changing mechanism on the left side for specific description. In practice, the bending center tool changing mechanisms on the left and right sides are usually arranged symmetrically.

[0042] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A bending center tool changing mechanism, characterized in that, include: Upper blade beam; A rotary pressing knife assembly includes a transverse base, a tool changing assembly, and a positioning assembly. The tool changing assembly and the positioning assembly are located on the transverse base. The tool changing assembly includes a rotary pressing knife group and a flipping motor that drives the rotary pressing knife to rotate up and down. The positioning assembly includes a hook base and a positioning motor. The hook base has a snap-fit ​​edge and a rotating shaft. The rotating shaft is hinged to the transverse base. The positioning motor is driven by the rotating shaft. The output shaft of the positioning motor is coaxial with the rotating shaft. The rotary pressing knife group includes multiple rotary pressing knives. The end of each rotary pressing knife has a flange. When the rotary pressing knife swings upward, the hook base swings downward so that the snap-fit ​​edge engages and locks with the flange of the rotary pressing knife. A transverse drive unit is provided on the upper cutter beam, and the transverse drive unit is used to drive the transverse seat to move laterally.

2. The bending center tool changing mechanism according to claim 1, characterized in that: The tool changing assembly also includes a insertion rod and an insertion rod motor mounted on the transverse sliding seat. The insertion rod motor is used to drive the insertion rod to move left and right and can be inserted into the through holes of the multiple rotating pressure knives. The flipping motor is used to drive the insertion rod to flip, thereby causing the rotating pressure knives to flip.

3. The bending center tool changing mechanism according to claim 2, characterized in that: The tool changing assembly also includes a lead screw drive structure, which includes a lead screw rotatably mounted on the transverse sliding seat and a nut seat fixed relative to the insertion rod. The insertion rod motor is driven by the lead screw, the nut seat is slidably mounted on the transverse sliding seat, and the lead screw and the nut seat are threadedly driven together.

4. The bending center tool changing mechanism according to claim 3, characterized in that: The flip motor is driven by a rotating shaft. The nut seat is provided with a moving block, which is slidably disposed on the rotating shaft. The insertion rod is provided with a connecting block, which is engaged with the moving block. The connecting block is slidably disposed on the rotating shaft and is relatively fixed to the rotating shaft in the circumferential direction, so that the flip motor drives the insertion rod to flip. The rotating shaft, lead screw, and insertion rod are coaxially arranged.

5. The bending center tool changing mechanism according to claim 4, characterized in that: The rotating shaft is provided with a fixed block, and the fixed block has a through hole through which the insertion rod passes.

6. The bending center tool changing mechanism according to claim 4, characterized in that: The transverse support is equipped with a second sensor, which is used to sense the travel distance of the nut seat.

7. The bending center tool changing mechanism according to claim 4, characterized in that: The rotating shaft and lead screw are arranged at intervals, and the horizontal movement drive unit, the insertion rod motor, and the flipping motor are arranged at intervals.

8. The bending center tool changing mechanism according to claim 1, characterized in that: The transverse sliding seat is slidably mounted on the upper blade beam.

9. The bending center tool changing mechanism according to claim 1, characterized in that: The transverse sliding seat is provided with a mounting block, the rotating shaft is hinged to the mounting block, and a plurality of support plates are provided between the mounting block and the transverse sliding seat, with the plurality of support plates located at the bottom of the mounting block.

10. The bending center tool changing mechanism according to claim 1, characterized in that: The upper blade beam is equipped with a first sensor, which is used to sense the travel distance of the transverse sliding seat.

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