Angle-adjustable bending equipment for sheet metal machining

Abstract

The utility model relates to the field of sheet metal working, in particular to angle-adjustable bending equipment for sheet metal working. The equipment comprises a supporting frame and a supporting plate, a punching groove is formed in the supporting frame in a penetrating mode, the supporting plate is arranged on the lower side of the supporting frame, and a deformation groove aligned with the punching groove is formed in the supporting plate. Two contact plates are arranged on the two sides of the punching groove in the upper end of the supporting frame, and a driving mechanism I is arranged below the contact plates. The driving mechanism I can drive the two contact plates to move relatively, so that the distance between the two contact plates is changed, and the bending position and angle of the workpiece to be machined are accurately adjusted. Due to the introduction of the equipment, the flexibility and efficiency of the production process are remarkably improved, meanwhile, the production cost is reduced, and the product bending precision and the quality stability are ensured.

Description

Technical Field

[0001] This utility model relates to the field of sheet metal processing equipment technology, and in particular to sheet metal processing angle adjustable bending equipment. Background Technology

[0002] Sheet metal processing plays a vital role in modern industrial manufacturing, with a wide range of applications covering industries such as aerospace, automotive manufacturing, and electronic equipment. Among the sheet metal processing steps, bending is particularly crucial, as its precision and efficiency directly determine the quality and performance of the sheet metal products.

[0003] Currently, sheet metal bending equipment is mostly limited to basic functions. Typically, these devices achieve bending by setting a punching groove on a support frame. The specific operation involves placing the workpiece on top of the support frame, ensuring the processing area is aligned with the punching groove, and then using a stamping device to drive the workpiece into the punching groove to complete the bending. Simultaneously, a die with deformation grooves is positioned at the bottom of the support frame. These deformation grooves on the die are aligned with the punching grooves, providing the necessary position and space for bending the sheet metal part. Existing technology mainly relies on deformation grooves at specific angles on the die to perform the bending operation.

[0004] However, these traditional devices have significant limitations. When the bending angle needs adjustment, the mold must be replaced. The mold replacement process is cumbersome, time-consuming, and labor-intensive, which not only reduces production efficiency but also increases the procurement and storage costs of the molds. Frequent mold changes can lead to installation errors, affecting bending accuracy and ultimately reducing product quality. In actual production, diverse products require different bending angles, which existing equipment struggles to meet, limiting production flexibility and adaptability.

[0005] Therefore, in order to overcome the shortcomings of existing sheet metal bending equipment in terms of angle adjustment and improve production flexibility and product quality, it is particularly necessary to develop a sheet metal bending equipment with angle adjustment function. Utility Model Content

[0006] To address the limitations of existing technologies, this invention proposes an angle-adjustable bending device for sheet metal processing. This device has the ability to flexibly adjust the bending angle, effectively saving operation time and reducing processing costs. Furthermore, it overcomes the limitation of existing devices that rely on mold positioning, thus preventing bending at only specific angles.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] An adjustable bending machine for sheet metal processing includes a support frame with a punching groove, and two contact plates located on the left and right sides of the punching groove. A drive mechanism I is provided on the lower side of both contact plates. The two contact plates move in completely opposite directions via the drive mechanism I, and each contact plate moves linearly left and right relative to the support frame via the drive mechanism I. A support plate is fixedly connected to the lower side of the support frame, and a deformation groove is provided at the upper end of the support plate. The deformation groove and the punching groove are on the same vertical plane.

[0009] Preferably, a follower block is provided on each of the left and right sides inside the deformation groove. The follower block is rotatably connected to the support plate. Furthermore, the projection of each follower block on the vertical plane is an arc-shaped structure. When the two follower blocks are not affected by external forces, the two follower blocks abut against each other at their near ends.

[0010] Preferably, the two follower blocks are respectively provided with upper and lower axial tension springs at their far ends, and the two axial ends of the tension springs are respectively movably connected to the follower block and the top plate.

[0011] Preferably, the drive mechanism I includes a bidirectional lead screw with left and right axes. A drive mechanism II is screwed to each of the two axial ends of the bidirectional lead screw. The drive mechanism II is movably connected to the contact plate. There are two bidirectional lead screws, which are arranged one in front of the other. A synchronization component is provided between the two bidirectional lead screws. A drive motor is provided on one side of one of the bidirectional lead screws. The output shaft of the drive motor is connected to the bidirectional lead screw for transmission.

[0012] Preferably, each of the drive mechanisms II includes a positioning frame, on which a screw is rotatably connected. The positioning frame has internal threaded holes at its front and rear ends, and is screwed to a bidirectional lead screw through the internal threaded holes. The lower side of the contact plate is screwed to the screw, and a positioning rod is slidably connected to the front and rear ends of the lower side of the contact plate. The positioning rod is movably connected to the positioning frame.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] In terms of production flexibility, this invention achieves precise control of the contact plate spacing on the support frame through the drive mechanism I, enabling flexible adjustment of the bending position and angle of the workpiece. This meets the diverse bending angle requirements of different products and adapts to various production environments. Regarding efficiency, this design allows for angle adjustment without mold replacement, effectively saving mold change time, reducing equipment start-ups and shutdowns, enhancing continuous processing capabilities, and significantly improving production efficiency. In terms of cost control, reducing mold investment and storage costs lowers the need for specialized mold-changing personnel, thereby reducing labor costs. Regarding quality assurance, precise control of the contact plate spacing avoids mold change errors, improves bending accuracy, reduces the defect rate, and ensures product quality stability. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0016] Figure 2 This is a schematic diagram showing the positional relationship between the contact plate and the auxiliary mechanism of this utility model.

[0017] Figure 3 This is a schematic diagram of the overall structure of the auxiliary mechanism of this utility model.

[0018] Figure 4 This is a schematic diagram of the overall structure of the drive mechanism I of this utility model.

[0019] Figure 5 This is a schematic diagram showing the connection between the drive mechanism II and the contact plate of this utility model.

[0020] In the diagram: 1. Support frame; 2. Contact plate; 3. Punching groove; 4. Drive mechanism I; 401. Bidirectional lead screw; 402. Drive motor; 403. Synchronization component; 5. Drive mechanism II; 501. Internal threaded hole; 502. Positioning rod; 503. Positioning frame; 504. Screw; 6. Auxiliary mechanism; 601. Support plate; 602. Tension spring; 603. Follower block; 604. Deformation groove. Detailed Implementation

[0021] 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.

[0022] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship 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.

[0023] Please see Figure 1 This utility model relates to an angle-adjustable bending device for sheet metal processing. Its structure is similar to that of existing technology devices, including a support frame 1 with a through punching groove 3. This design ensures precise alignment of the workpiece through the support frame 1, and, in conjunction with a high-precision stamping device, enables the workpiece to be precisely inserted into the punching groove 3, thereby completing a high-precision sheet metal bending operation.

[0024] Correspondingly, the bottom of the support frame 1 is equipped with an auxiliary mechanism 6, which includes a support plate 601. The support plate 601 is provided with a deformation groove 604 to ensure that the deformation groove 604 is aligned with the punching groove 3, providing a precise position and the required space for sheet metal bending.

[0025] like Figure 1 , Figure 2 As shown, unlike existing technology devices, this device has two contact plates 2 at the upper end of the support frame 1, located on the left and right sides of the punching groove 3 respectively, and the workpiece to be processed is supported by the contact plates 2.

[0026] In addition, such as Figure 1 As shown, this device has a driving mechanism I4 located below both contact plates 2. The relative movement of the two contact plates 2 can be achieved through the driving mechanism I4, i.e. Figure 2 As shown, adjust the distance between the two contact plates 2.

[0027] In practical applications, it is important to note that the position of the support plate 601 remains fixed (meaning the downward deformation distance of the workpiece is constant). In this case, by adjusting the distance between the two contact plates 2, the bending position of the workpiece can be changed, thereby precisely controlling its bending angle. Specifically, the larger the spacing, the closer the bending angle is to 180°; the smaller the spacing, the closer the bending angle is to 90°.

[0028] Specifically, such as Figure 4As shown, the drive mechanism I4 includes a bidirectional lead screw 401, and drive mechanism II5 is connected to both ends of the bidirectional lead screw 401. The drive mechanism II5 is movably connected to the contact plate 2. The drive mechanism II5 is restricted from rotating around the central axis of the bidirectional lead screw 401 by the threaded connection. The distance between the two contact plates 2 is changed by rotating the bidirectional lead screw 401.

[0029] It should be noted that the characteristic of the two-way lead screw 401 with completely opposite thread directions at both ends can achieve completely opposite movement directions between the two contact plates 2, thereby quickly adjusting the distance between the two contact plates 2.

[0030] Specifically, in order to effectively prevent the drive mechanism II5 from rotating around the central axis of the bidirectional lead screw 401, the device is equipped with bidirectional lead screws 401 at both the front and rear ends of the lower side of the contact plate 2. Through the mutual restraint of the two bidirectional lead screws 401, it is ensured that the contact plate 2 will not rotate. At the same time, this design also balances the thrust on the individual drive mechanism II5, effectively reducing operating noise and reducing machine wear.

[0031] Furthermore, this device incorporates a synchronization component 403 (such as...) between the two bidirectional lead screws 401. Figure 4 As shown, this is a bevel gear set, which ensures that the two can rotate synchronously, thereby preventing damage to the equipment due to thrust imbalance of a single drive mechanism II5.

[0032] Accordingly, we installed a drive motor 402 on one side of one of the bidirectional lead screws 401. By precisely connecting the output shaft of the drive motor 402 to the bidirectional lead screw 401, we made it work in coordination with the synchronization component 403 to drive the two lead screws to rotate synchronously.

[0033] It should be emphasized that in practical applications, this device achieves the transmission connection between the drive motor 402 and the contact plate 2 through the drive mechanism II5. Therefore, the existence of the drive mechanism II5 can further adjust the position of a single contact plate 2 (i.e., the distance between a single contact plate 2 and the support plate 601), so that the distances between the two contact plates 2 and the support plate 601 are not equal, thereby realizing more diverse bending processes under specific stamping equipment and ensuring that the bending angle can meet the actual use requirements.

[0034] Specifically, such as Figure 3 As shown, the drive mechanism II5 includes a positioning frame 503. The positioning frame 503 has internal threaded holes 501 at its lower front and rear ends. The internal threaded holes 501 are used to realize the screw connection between the positioning frame 503 and the bidirectional lead screw 401. The position of the positioning frame 503 is changed by the bidirectional lead screw 401.

[0035] Accordingly, in order to further change the position of the contact plate 2 by driving mechanism II5, the device also has a screw 504 rotatably connected to the positioning frame 503. The device constrains the screw 504 to be screwed to the contact plate 2, and under the premise that the contact plate 2 cannot be rotated, the relative distance between the positioning frame 503 and the contact plate 2 can be further adjusted by rotating the screw 504.

[0036] Specifically, in order to restrict the rotation of the contact plate 2 relative to the positioning frame 503, the device provides slidingly connected positioning rods 502 at the front and rear ends of the lower side of the contact plate 2, and constrains the contact plate 2 by the movable connection between the positioning rods 502 and the positioning frame 503.

[0037] Furthermore, such as Figure 2 , Figure 3 As shown, to assist bending and avoid indentations on the workpiece during multi-angle bending, which would affect subsequent operations, the device has follower blocks 603 on both the left and right sides inside the deformation groove 604. The follower blocks 603 are rotatably connected to the support plate 601.

[0038] Meanwhile, the device is designed so that the projection of the follower block 603 in the vertical direction is arc-shaped. By utilizing the arc-shaped structure of the follower block 603 and its squeezing action with the deformation groove 604, the generation of indentations can be effectively avoided after the workpiece enters the deformation groove 604.

[0039] Accordingly, to ensure that the follower block 603 always fits against the workpiece, the device constrains the two follower blocks 603 to abut at their near ends when they are not affected by external forces. In this way, as the workpiece enters the deformation groove 604 downwards, a necessary squeezing action is generated between it and the follower block 603.

[0040] Meanwhile, by constraining the two follower blocks 603 to abut their near ends when they are not affected by external forces, the follower blocks 603 can also spontaneously reset after the workpiece is removed from the deformation groove 604, facilitating subsequent processing. This can be achieved by adjusting the center of gravity of the follower blocks 603 and the shape of the deformation groove 604.

[0041] Furthermore, to ensure that the follower block 603 can automatically reset, the device is equipped with upper and lower axial tension springs 602 at the far ends of the two follower blocks 603 respectively. The two ends of these springs are movably connected to the follower block 603 and the top plate respectively.

[0042] In practical applications, this utility model is as follows:

[0043] I. Preparatory Work

[0044] Adjust the spacing between contact plates 2:

[0045] Start the drive motor 402, and the output shaft of the drive motor 402 will drive the bidirectional lead screw 401 connected to it to rotate.

[0046] Since the threads on the two axial ends of the bidirectional lead screw 401 are opposite, when the bidirectional lead screw 401 rotates, the two drive mechanisms II5 will drive the two contact plates 2 to move away from each other or relative to each other, thereby changing the distance between the two contact plates 2 to adjust the bending position and bending angle of the workpiece to be processed.

[0047] Adjust the position of a single contact plate 2 (optional):

[0048] To achieve more diverse bending processes, the screw 504 on the positioning frame 503 can be rotated.

[0049] Since the screw 504 is screwed to the contact plate 2, rotating the screw 504 can further adjust the relative distance between the positioning frame 503 and the contact plate 2, so that the distances between the two contact plates 2 and the support plate 601 are not equal.

[0050] II. Bending Process

[0051] Place the workpiece to be processed:

[0052] Place the workpiece on the two contact plates 2 on the upper side of the support frame 1, ensuring that the processing position of the workpiece corresponds to the punching groove 3, and that the lower end of the workpiece abuts against the near end of the two contact plates 2.

[0053] Start the stamping equipment:

[0054] After the stamping equipment is started, the equipment will apply downward force to squeeze the workpiece until it is completely embedded in the punching groove 3 and the deformation groove 604 below the support plate 601.

[0055] Rotation of follower block 603 and accumulation of elastic potential energy:

[0056] As the workpiece is lowered into the deformation groove 604, compression occurs between the workpiece and the follower block 603.

[0057] The workpiece is pressed against the two follower blocks 603, causing it to rotate naturally within the deformation groove 604. At the same time, the tension spring 602 is stretched, storing elastic potential energy.

[0058] The arc-shaped design of the follower block 603, combined with its squeezing action in the deformation groove 604, effectively prevents indentations from being left on the surface of the workpiece.

[0059] III. Reset and Subsequent Processing

[0060] Reset of follower block 603:

[0061] As the stamping equipment rises, the workpiece leaves the deformation groove 604. Under the combined action of the elastic potential energy released by the tension spring 602, its own center of gravity, and the shape of the deformation groove 604, the follower block 603 automatically resets, and the two ends re-fit, preparing for the next processing.

[0062] Remove the workpiece:

[0063] Remove the workpiece that has been bent from contact plate 2.

[0064] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An adjustable bending device for sheet metal processing, comprising a support frame (1), wherein a punching groove (3) is provided on the support frame (1), characterized in that: It also includes contact plates (2), and there are two contact plates (2), which are located on the left and right sides of the punching groove (3), respectively; The two contact plates (2) are provided with a drive mechanism I (4) on their lower sides. The two contact plates (2) move in completely opposite directions through the drive mechanism I (4). Furthermore, each contact plate (2) moves in a straight line to the left and right relative to the support frame (1) through the drive mechanism I (4). A support plate (601) is fixedly connected to the lower side of the support frame (1). A deformation groove (604) is provided at the upper end of the support plate (601). The deformation groove (604) and the punching groove (3) are in the same vertical plane.

2. The sheet metal processing angle-adjustable bending equipment according to claim 1, characterized in that: The deformation groove (604) has a follower block (603) on each of its left and right sides. The follower block (603) is rotatably connected to the support plate (601), and the projection of each follower block (603) on the vertical plane is an arc-shaped structure. When the two follower blocks (603) are not affected by external forces, the two follower blocks (603) abut against each other at their near ends.

3. The sheet metal processing angle-adjustable bending equipment according to claim 2, characterized in that: The two follower blocks (603) are respectively provided with upper and lower axial tension springs (602) at their far ends, and the two axial ends of the tension springs (602) are respectively movably connected to the follower blocks (603) and the top plate.

4. The sheet metal processing angle-adjustable bending equipment according to claim 1, characterized in that: The drive mechanism I (4) includes a bidirectional lead screw (401) with left and right axes. A drive mechanism II (5) is screwed to each of the two axial ends of the bidirectional lead screw (401). The drive mechanism II (5) is movably connected to the contact plate (2). The number of the two-way lead screws (401) is two, and the two two-way lead screws (401) are arranged one after the other, and a synchronization component (403) is arranged between the two two-way lead screws (401); One of the bidirectional lead screws (401) has a drive motor (402) on one side, and the output shaft of the drive motor (402) is connected to the bidirectional lead screw (401) for transmission.

5. The sheet metal processing angle-adjustable bending equipment according to claim 4, characterized in that: Each of the drive mechanisms II (5) includes a positioning frame (503), on which a screw (504) is rotatably connected. Furthermore, the positioning frame (503) has internal thread holes (501) at its front and rear ends on its lower side, and the positioning frame (503) is screwed to the bidirectional lead screw (401) through the internal thread holes (501). The lower side of the contact plate (2) is screwed to the screw (504), and a positioning rod (502) is slidably connected to the front and rear ends of the lower side of the contact plate (2), and the positioning rod (502) is movably connected to the positioning frame (503).

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