Automatic material pressing mechanism of a flanging and bending machine

Abstract

The utility model relates to the field of flanging machine especially automatic pressing mechanism of flanging bending machine, including frame, lower fixed cutter and upper pressure cutter subassembly, the lower fixed cutter is installed in the frame, the upper pressure cutter subassembly sets up lower fixed cutter top, and is connected in the frame up and down slidingly, the frame is provided with drive arrangement, both ends of upper pressure cutter subassembly all are provided with crank eccentric structure, and drive arrangement is connected in drive arrangement through crank eccentric structure transmission, this pressing mechanism this pressing mechanism replaces the existing screw rod transmission mode through crank eccentric structure, and drive arrangement utilizes crank eccentric structure transmission connection in upper pressure cutter subassembly, to realize the lift of upper pressure cutter subassembly, and whole structure is reasonable and stable, rigid good, and the cost is low.

Description

Technical Field

[0001] This utility model relates to the technical field of flanging machines, and in particular to an automatic pressing mechanism for a flanging and bending machine. Background Technology

[0002] Automatic flanging machines are automated devices used for bending, rolling, or flanging metal sheets. They are widely used in automobile manufacturing, home appliance housings, and chassis cabinets. Currently, traditional automatic flanging machines use screw drives to move the upper pressure knife assembly downwards or upwards. The pressure mechanism is the main structure for bending in automatic flanging machines. However, current pressure mechanisms mainly use screw drives to move the upper pressure knife assembly downwards or upwards, resulting in insufficient rigidity and stability. Therefore, designing an alternative pressure structure that improves rigidity and stability is a problem that urgently needs to be solved by those in this field. Summary of the Invention

[0003] The present invention provides an automatic pressing mechanism for a flanging and bending machine to solve the aforementioned problems and improve the rigidity and stability of the pressing mechanism.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an automatic pressing mechanism for a flanging and bending machine, comprising a frame, a lower fixed blade, and an upper pressing blade assembly. The lower fixed blade is installed inside the frame, and the upper pressing blade assembly is disposed above the lower fixed blade and slidably connected to the frame. The frame is provided with a driving device, and both ends of the upper pressing blade assembly are provided with crank eccentric structures, which are then connected to the driving device via the crank eccentric structures.

[0005] Furthermore, the upper pressure knife assembly includes an upper pressure knife and a lifting sliding plate. The upper pressure knife is disposed at the bottom of the lifting sliding plate, and both ends of the lifting sliding plate are provided with a main shaft rotatably connected to the crank eccentric structure.

[0006] Furthermore, the crank eccentric structure includes an eccentric block and a connecting arm. The lower part of the eccentric block is connected to the output end of the drive device, the upper part is rotatably connected to the upper part of the connecting arm, and the lower part of the connecting arm is rotatably connected to the main shaft.

[0007] Furthermore, the connecting arm includes symmetrically distributed bearing seats a and b, and a screw connects the bearing seats a and b.

[0008] Furthermore, the lifting sliding plate is slidably connected to the frame.

[0009] Furthermore, the drive device includes a servo motor and a reducer. The servo motor and the reducer are both mounted in the middle of the top of the frame and are connected to each other. The reducer has output ends at both ends, and the output ends are connected to couplings. The couplings are connected to the eccentric block through output connecting shafts.

[0010] Compared with the prior art, the beneficial effects of this utility model are: the pressing mechanism replaces the existing screw transmission method with a crank eccentric structure, and the driving device is connected to the upper pressing knife assembly through the crank eccentric structure to realize the lifting and lowering of the upper pressing knife assembly. The overall structure is reasonable and stable, has good rigidity, and is low in cost. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0012] Figure 2 for Figure 1 Enlarged view of point A.

[0013] Figure 3 This is the front view of the present invention.

[0014] Figure 4 This is a schematic diagram of the rising state of the upper pressure knife assembly in this utility model.

[0015] Figure 5 This is a side view of the present invention.

[0016] In the diagram: 1. Frame; 2. Lower fixed blade; 3. Upper pressure blade assembly; 4. Drive unit; 31. Lower pressure blade; 32. Lifting sliding plate; 41. Servo motor; 42. Reducer; 51. Eccentric block; 52. Connecting arm; 322. Spindle; 420. Coupling; 421. Output connecting shaft; 511. Hole a; 512. Hole b; 521. Bearing seat a; 522. Bearing seat b; 555. Screw. Detailed Implementation

[0017] 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.

[0018] As shown in the attached figure, the automatic pressing mechanism of the flange bending machine of this utility model includes a frame 1, a lower fixed blade 2, and an upper pressing blade assembly 3. The lower fixed blade 2 is installed inside the frame 1, and the upper pressing blade assembly 3 is disposed above the lower fixed blade 2 and is slidably connected to the frame 1. The frame 1 is provided with a driving device 4. Both ends of the upper pressing blade assembly 3 are provided with crank eccentric structures, which are connected to the driving device 4 through the crank eccentric structures. The crank eccentric structures are specifically disposed on both sides of the frame 1. The upper pressing blade assembly 3 is disposed inside the frame 1 and protrudes from the frame 1 through a main shaft 322. It is connected to the connecting arm 52. Note that the frame 1 has an opening at the corresponding position for the main shaft 322 to protrude. The upper pressure knife assembly 3 specifically includes an upper pressure knife 31 and a lifting sliding plate 32. The upper pressure knife assembly 3 is slidably connected to the frame 1 through the lifting sliding plate 32. The lifting sliding plate 32 can slide on the frame 1 through a slider and a linear guide rail. By setting a slider on the lifting sliding plate 32, a linear guide rail is set on the frame 1 to slide on the slider. The upper pressure knife 31 is set at the bottom of the lifting sliding plate 32. Both ends of the lifting sliding plate 32 are provided with a main shaft 322 rotatably connected to the crank eccentric structure. The crank eccentric structure specifically includes an eccentric block 51 and a connecting arm 52. The lower part of the eccentric block 51 is connected to the output end of the drive device 4, and the upper part is rotatably connected to the upper part of the connecting arm 52. The lower part of the connecting arm 52 is rotatably connected to the main shaft 322.

[0019] When a sheet metal workpiece needs to be bent, the workpiece is first placed on the lower fixed blade 2. Then, the drive device 4 is started, and the servo motor 41 rotates to drive the output ends of the reducer 42. This drives the coupling 420 and the output connecting shaft 421. The output connecting shaft 421 drives the eccentric block 51, causing the eccentric block 51 to swing clockwise around the output end. The eccentric block 51 is transmitted to the connecting arm 52, which causes the lifting sliding plate 32 and the lower pressure blade to move downward in a straight line to press the sheet metal workpiece. The sheet metal workpiece is then bent. After the sheet metal workpiece has completed one process, the servo motor 41 reverses to cause the eccentric block 51 to swing counterclockwise. The eccentric block 51, through the connecting arm 52, causes the lifting sliding plate 32 and the upper pressure blade 31 to move upward in a straight line. The bent sheet metal can then be removed.

[0020] This utility model provides an automatic pressing mechanism for a flanging and bending machine. The pressing mechanism replaces the existing screw drive method with a crank eccentric structure. The pressing mechanism is mainly used to fix sheet metal workpieces. The drive device 4 is connected to the upper pressing knife assembly 3 through the crank eccentric structure to realize the lifting and lowering of the upper pressing knife assembly 3, thereby realizing the pressing and bending of sheet metal workpieces of different sizes. The overall structure is reasonable, stable, and has good rigidity. Moreover, the greater the swinging motion of the eccentric block 51, the greater its downward pressure. The drive device 4 provides power, and the output end drives the eccentric block 51 to swing.

[0021] Specifically, the crank eccentric structure includes an eccentric block 51 and a connecting arm 52. The lower part of the eccentric block 51 is connected to the output end of the drive device 4, and the upper part is rotatably connected to the upper part of the connecting arm 52. The lower part of the connecting arm 52 is rotatably connected to the main shaft 322. The eccentric block 51 has holes a 511 and b 512 on its upper and lower sides. Note the explanation... Figure 5 To clearly show the eccentric block 51, the a bearing housing 521 is hidden. A hole 511 is used to connect the a bearing housing 521, and a hole 512 is used to connect the output connecting shaft 421. The connecting arm 52 specifically includes symmetrically distributed a bearing housing 521 and b bearing housing 522. A screw 555 connects the a bearing housing 521 and b bearing housing 522. The screw 555 has threads at both ends, allowing it to connect to the a bearing housing 521 and b bearing housing 522 respectively. The length of the connecting arm 52 can also be adjusted by turning the screw 555. Bearings are located at the top of the a bearing housing 521 and the bottom of the b bearing housing 522, and are rotatably connected to the eccentric block 51 and the main shaft 322 using these bearings.

[0022] Specifically, the drive device 4 includes a servo motor 41 and a reducer 42. The servo motor 41 and the reducer 42 are both mounted on the top center of the frame 1 and are connected to each other. The top of the frame 1 is provided with a mounting plate, on which the servo motor 41 and the reducer 42 are mounted. The reducer 42 has output ends at both ends, and the output ends are connected to a coupling 420. The coupling 420 is connected to the eccentric block 51 through an output connecting shaft 421. The servo motor 41 has forward and reverse rotation functions. The output connecting shaft 421 is connected to the frame 1 through a bearing. The eccentric block 51 swings around the output connecting shaft 421 as the rotation center.

[0023] The above embodiments are preferred embodiments of this utility model. All structures similar to this utility model and equivalent changes thereof should fall within the protection scope of this utility model.

Claims

1. An automatic pressing mechanism for a flanging and bending machine, comprising a frame, a lower fixed blade, and an upper pressing blade assembly, wherein the lower fixed blade is installed inside the frame, characterized in that: The upper pressing knife assembly is located above the lower fixed knife and is slidably connected to the frame. The frame is equipped with a driving device. Both ends of the upper pressing knife assembly are equipped with crank eccentric structures, which are connected to the driving device through the crank eccentric structures.

2. The automatic pressing mechanism of a flanging and bending machine according to claim 1, characterized in that: The upper pressure knife assembly includes an upper pressure knife and a lifting sliding plate. The upper pressure knife is located at the bottom of the lifting sliding plate, and both ends of the lifting sliding plate are provided with a main shaft that is rotatably connected to the crank eccentric structure.

3. The automatic pressing mechanism of a flanging and bending machine according to claim 2, characterized in that: The crank eccentric structure includes an eccentric block and a connecting arm. The lower part of the eccentric block is connected to the output end of the drive device, and the upper part is rotatably connected to the upper part of the connecting arm. The lower part of the connecting arm is rotatably connected to the main shaft.

4. The automatic pressing mechanism of a flanging and bending machine according to claim 3, characterized in that: The connecting arm includes a bearing housing and a bearing housing b that are symmetrically distributed, and a screw connects the bearing housing a and the bearing housing b.

5. The automatic pressing mechanism of a flanging and bending machine according to claim 2, characterized in that: The lifting sliding plate is slidably connected to the frame.

6. The automatic pressing mechanism of a flanging and bending machine according to claim 3, characterized in that: The drive device includes a servo motor and a reducer. The servo motor and the reducer are both mounted on the top center of the frame and are connected to each other. The reducer has output ends at both ends, and the output ends are connected to couplings. The couplings are connected to the eccentric block through output connecting shafts.

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