All-electric bending machine back pressure device

Abstract

This utility model discloses a back pressure device for an all-electric bending machine, including a frame, a slider, a transmission assembly, and an anti-drop mechanism. The slider is equipped with a downward pressing blade. The transmission assembly is mounted on the frame. The anti-drop mechanism includes a vertically extending connecting rod, a connecting block mounted on the frame, and a pre-tensioning spring. The connecting rod is fixed to the slider and slidably mounted on the connecting block. The pre-tensioning spring is sleeved on the connecting rod and provides elastic force for the slider to move upward. When the transmission assembly is working normally, the slider moves downward under the drive of the transmission assembly. At this time, the pre-tensioning spring is compressed and stores elastic potential energy. Once the transmission assembly malfunctions, such as a broken timing belt, the force exerted by the transmission assembly on the slider disappears. The pre-tensioning spring instantly releases the stored elastic potential energy, providing an upward elastic force to the slider, causing the slider to move upward rapidly. This effectively prevents the slider and its downward pressing blade from suddenly falling downward due to gravity, which would cause serious damage to the lower die and the downward pressing blade.

Description

Technical Field

[0001] This utility model relates to the field of bending machine technology, and in particular to a back pressure device for an all-electric bending machine. Background Technology

[0002] A bending machine is a machine used to bend sheet metal. It includes a clamping mechanism that presses the workpiece onto a worktable. The clamping mechanism comprises an upper blade beam, an upper fixed blade connected to the lower end of the upper blade beam, a lower fixed blade located below and corresponding to the upper fixed blade, and a drive mechanism for driving the upper blade beam and the upper fixed blade to move vertically. Existing bending machine drive mechanisms typically use two transmission components to move the upper blade beam together. These two transmission components are driven by two motors and connected by a belt drive structure. During operation, a problem arises when the belt fails, causing the upper blade beam to suddenly and rapidly slide down, resulting in damage to the upper fixed blade. Utility Model Content

[0003] The purpose of this utility model is to provide a back pressure device for an all-electric bending machine to solve one or more technical problems existing in the prior art, and at least provide a beneficial option or create conditions.

[0004] The technical solution adopted to solve the above-mentioned technical problems is as follows:

[0005] This utility model provides a back pressure device for an all-electric bending machine, including a frame, a slider, a transmission assembly, and an anti-drop mechanism. The slider is equipped with a downward pressing blade. The transmission assembly is located on the frame and is used to drive the downward pressing blade to move up and down. The anti-drop mechanism includes a vertically extending connecting rod, a connecting block located on the frame, and a pre-tensioning spring. The connecting rod is fixed to the slider and slidably located on the connecting block. The pre-tensioning spring is sleeved on the connecting rod and provides elastic force for the slider to move upward.

[0006] The beneficial effects of this utility model are:

[0007] When the transmission assembly is working normally, the slider moves downward under its drive, during which the preload spring is compressed, storing elastic potential energy. If the transmission assembly malfunctions, such as a broken timing belt, the force exerted on the slider disappears, and the preload spring instantly releases its stored elastic potential energy, providing an upward elastic force to the slider. This causes the slider to move rapidly upward, effectively preventing the slider and its pressing blade from suddenly falling downwards due to gravity, which could cause serious damage to the lower mold box and the pressing blade. This anti-drop mechanism design greatly improves the safety and reliability of the equipment, reducing maintenance costs and production losses caused by equipment failures.

[0008] As a further improvement to the above technical solution, the upper end of the connecting rod is provided with a stop block, and the two ends of the pre-tension spring abut against the stop block and the connecting block respectively.

[0009] As a further improvement to the above technical solution, the transmission assembly includes a lead screw and nut assembly, a motor, and a synchronous belt assembly. The lead screw and nut assembly includes a lead screw arranged in a vertical direction and a nut sleeved on the lead screw. The synchronous belt assembly includes a first pulley sleeved on the lead screw and a second pulley connected to the output end of the motor. The first pulley and the second pulley are connected by a synchronous belt drive. The nut is fixed to the slider.

[0010] As a further improvement to the above technical solution, the number of transmission components is provided as multiple, and the multiple transmission components are arranged side by side on the frame.

[0011] As a further improvement to the above technical solution, the slider is slidably disposed on the frame.

[0012] As a further improvement to the above technical solution, the frame is provided with a slide rail, and the slider is slidably disposed on the slide rail.

[0013] As a further improvement to the above technical solution, limiting components are provided on both sides of the slider.

[0014] As a further improvement to the above technical solution, the limiting component includes a rolling wheel and a mounting block disposed on the frame. The rolling wheel is rotatably disposed on the mounting block, and the rolling wheels located on the left and right sides of the slider are respectively slidably disposed with the left and right sides of the mounting block.

[0015] As a further improvement to the above technical solution, the left and right sides of the slider are also provided with limiting steps that abut against the rolling wheel.

[0016] As a further improvement to the above technical solution, the rack is equipped with a display. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0018] Figure 1 This is a schematic diagram of an embodiment of the back pressure device for an all-electric bending machine provided by this utility model, wherein the six arrows represent forward, backward, left, right, upward and downward directions, respectively;

[0019] Figure 2 This is a schematic diagram of an embodiment of the back pressure device for an all-electric bending machine provided by this utility model, wherein the six arrows represent forward, backward, left, right, upward and downward directions, respectively;

[0020] Figure 3 This is a front view schematic diagram of an embodiment of the back pressure device for the all-electric bending machine provided by this utility model, wherein the four arrows represent left, right, up and down respectively;

[0021] Figure 4 This is a partial front view schematic diagram of an embodiment of the back pressure device for the all-electric bending machine provided by this utility model.

[0022] Figure label:

[0023] Frame 100, slider 200, limit step 210, transmission assembly 300, lead screw and nut assembly 310, motor 320, synchronous belt assembly 330, first pulley 331, second pulley 332, synchronous belt 333, anti-drop mechanism 400, connecting rod 410, connecting block 420, preload spring 430, limit assembly 500, rolling wheel 510, mounting block 520, display 600. Detailed Implementation

[0024] 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.

[0025] 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 relationship based on the directional 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.

[0026] 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.

[0027] 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.

[0028] Reference Figures 1 to 4 The back pressure device of the all-electric bending machine of this utility model is described in the following embodiment:

[0029] The back pressure device of the all-electric bending machine is a key component to ensure the safety of bending operations and the stability of the equipment. It mainly includes the frame 100, the slider 200, the transmission assembly 300, and the anti-fall mechanism 400.

[0030] The slider 200 serves as the actuating component, on which a downward pressure tool is mounted. During the bending operation, pressure is directly applied to the workpiece to achieve bending and shaping of the workpiece.

[0031] The transmission assembly 300 is the power system that drives the slider 200 and the lowering blade to rise and fall. This device has three transmission assemblies 300, which are mounted side-by-side on the frame 100. Each transmission assembly 300 is connected to the lowering blade and works together to drive the lowering blade to perform precise lifting and lowering movements. Specifically, the transmission assembly 300 consists of a lead screw and nut assembly 310, a motor 320, and a synchronous belt assembly 330. In the lead screw and nut assembly 310, the lead screw is arranged vertically, and a nut is fitted onto the lead screw. The nut is further subdivided into a nut and a nut seat. The nut seat is securely fixed to the back of the slider 200 using bolts or other fasteners. The synchronous belt assembly 330 includes a first pulley 331 and a second pulley 332. The first pulley 331 is fitted onto the lead screw, and the second pulley 332 is connected to the output end of the motor 320. The two are connected by a synchronous belt 333. When the motor 320 starts, it transmits power to the lead screw via the synchronous belt assembly 330, causing the lead screw to rotate and thus driving the nut and the connected slider 200 to move up and down. This structural design, with multiple transmission components 300 arranged side by side, not only improves the stability of power transmission, but also ensures that if one transmission component 300 fails, the other transmission components 300 can still provide a certain amount of support, preventing the slider 200 from losing control instantly.

[0032] The anti-fall mechanism 400 is a key safety component of this device. It mainly includes a vertically extending connecting rod 410, a connecting block 420 fixedly mounted on the frame 100, and a preload spring 430. The connecting rod 410 is firmly fixed to the back of the slider 200 by welding or bolting. The connecting rod 410 slides through the connecting block 420, ensuring that the slider 200 can slide stably along the connecting rod 410 during lifting and lowering. The preload spring 430 is sleeved on the connecting rod 410, with its two ends abutting against the stop block at the upper end of the connecting rod 410 and the connecting block 420, respectively. When the transmission assembly 300 is working normally, the slider 200 moves downward under the drive of the transmission assembly 300. At this time, the preload spring 430 is compressed, storing elastic potential energy. If the transmission component 300 malfunctions, such as a breakage of the synchronous belt 333, the force exerted by the transmission component 300 on the slider 200 disappears. The preload spring 430 instantly releases its stored elastic potential energy, providing an upward elastic force to the slider 200, causing it to move rapidly upward. This effectively prevents the slider 200 and its downward-pressing blade from suddenly falling downwards due to gravity, which could cause serious damage to the lower mold box and the downward-pressing blade. This anti-drop mechanism 400 design greatly improves the safety and reliability of the equipment and reduces maintenance costs and production losses caused by equipment failures.

[0033] Furthermore, the stop block at the upper end of the connecting rod 410 not only provides a stable support point for the preload spring 430, but also acts as a limit during the ascent of the slider 200, preventing it from rising excessively. Of course, the frame 100 needs to be equipped with a corresponding limit part to prevent the stop block from rising excessively. When the timing belt 333 malfunctions, the anti-drop mechanism 400 can respond promptly, effectively protecting the lower pressure blade on the slider 200 and its mating lower die through the action of the preload spring 430, ensuring that damage is minimized even in abnormal situations, and guaranteeing the continuity and stability of production.

[0034] In summary, the back pressure device of the all-electric bending machine, through its structural design and reasonable working principle, achieves stable driving and reliable protection of the slider 200 and the lower pressure blade, providing a strong guarantee for the efficient and safe operation of the all-electric bending machine.

[0035] The transmission assembly 300 includes a lead screw and nut assembly 310, a motor 320, and a synchronous belt assembly 330. The lead screw and nut assembly 310 includes a lead screw arranged vertically and a nut fitted onto the lead screw. The synchronous belt assembly 330 includes a first pulley 331 fitted onto the lead screw and a second pulley 332 connected to the output end of the motor 320. The first pulley 331 and the second pulley 332 are connected by a synchronous belt 333. The nut is fixed to the slider 200, and includes a nut and a nut seat fixedly connected to the nut. The nut seat is fixedly connected to the back of the slider 200. When the belt is damaged, it effectively protects the lower pressure cutter and its lower die on the slider 200.

[0036] The nut and nut seat can be set separately or formed as one piece. In this embodiment, the nut and nut seat are set separately, so the nut seat can be adapted to the structure of the upper blade beam of different bending machines without changing the structure of the nut, thus increasing the versatility of the lead screw nut assembly 310.

[0037] In this embodiment, the motor is 320; in other embodiments, it can be a linear drive element such as a hydraulic cylinder or an electric push rod.

[0038] To further improve the stability of the slider 200's sliding motion, vertically extending slide rails are carefully designed on both sides of the frame 100. These slide rails are securely installed on the frame 100 by bolts or welding, providing precise guide tracks for the slider 200's sliding. The slider 200 is connected to the slide rails via slider 200 seats installed on both sides of the slider 200, which are integrally formed with the slider 200 or fixed by bolts, achieving stable sliding. This structure allows the slider 200 to move strictly along the track of the slide rails during lifting and lowering, effectively preventing horizontal swaying of the slider 200, greatly improving the smoothness and accuracy of the sliding, and laying a solid foundation for subsequent bending operations.

[0039] Reference Figure 4 As shown, limiting components 500 are added to both the left and right sides of the slider 200. Each limiting component 500 includes a rolling wheel 510 and a mounting block 520. The mounting block 520 is securely mounted on the frame 100 using bolts or other fasteners to ensure its stable position. The rolling wheel 510 is rotatably mounted on the mounting block 520 via bearings, allowing it to rotate freely. The rolling wheels 510 located on the left and right sides of the slider 200 respectively slide in contact with the left and right sides of the slider 200.

[0040] During the bending operation as the slider 200 moves downward, the rolling wheels 510 slide and roll on the left and right sides of the slider 200. This design has significant advantages: firstly, the rolling and sliding motion of the rolling wheels 510 greatly reduces the friction between the slider 200 and the limiting component 500, reducing energy loss and wear, and extending the service life of the equipment; secondly, the rolling wheels 510 restrict the slider 200 from both sides, effectively reducing the lateral deviation of the slider 200 during its downward movement, greatly reducing processing errors, and significantly improving the dimensional and shape accuracy of the bent component, thus meeting higher precision processing requirements.

[0041] To further enhance the limiting effect, limiting steps 210 are carefully designed on both sides of the slider 200 to abut against the rolling wheels 510. The limiting steps 210 are machined onto the slider 200, with a smooth and flat surface that fits well with the contact surface of the rolling wheels 510. When the slider 200 moves downward to its limit position, the lower side of the rolling wheels 510 abuts tightly against the upper surface of the limiting steps 210, thus preventing the slider 200 from moving further downward. This limiting method is not only simple and reliable in structure, but also allows for precise control of the downward stroke of the slider 200, ensuring the accuracy and consistency of the bending operation and avoiding equipment damage or processing quality problems caused by excessive downward movement of the slider 200.

[0042] Further improvements include the addition of a display 600 to the frame 100. The display 600 is connected to the bending machine's control system via a data cable, enabling real-time display of various key parameters during the bending process, such as the position of the slider 200, pressure, and bending angle. Operators can intuitively understand the equipment's operating status and processing parameters through the display 600, facilitating real-time monitoring and adjustment. Simultaneously, the display 600 can be equipped with an alarm function. When abnormal conditions occur or processing parameters exceed the set range, an alarm can be issued promptly, reminding the operator to take appropriate measures, effectively improving equipment safety and operational convenience.

[0043] 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 back pressure device for an all-electric bending machine, characterized in that, include: frame; The slider is equipped with a downward pressing tool; A transmission assembly is provided on the frame, and the transmission assembly is used to drive the lower pressing tool to rise and fall; The anti-drop mechanism includes a vertically extending connecting rod, a connecting block disposed on the frame, and a pre-tensioning spring. The connecting rod is fixed to the slider and slidably disposed on the connecting block. The pre-tensioning spring is sleeved on the connecting rod and provides elastic force for the slider to move upward.

2. The back pressure device for the all-electric bending machine according to claim 1, characterized in that: The upper end of the connecting rod is provided with a stop block, and the two ends of the pre-tension spring abut against the stop block and the connecting block, respectively.

3. The back pressure device for the all-electric bending machine according to claim 1, characterized in that: The transmission assembly includes a lead screw and nut assembly, a motor, and a timing belt assembly. The lead screw and nut assembly includes a lead screw arranged vertically and a nut sleeved on the lead screw. The timing belt assembly includes a first pulley sleeved on the lead screw and a second pulley connected to the output end of the motor. The first pulley and the second pulley are connected by a timing belt drive. The nut is fixed to the slider.

4. The back pressure device for the all-electric bending machine according to claim 1, characterized in that: The number of transmission components is multiple, and the multiple transmission components are arranged side by side on the frame.

5. The back pressure device for the all-electric bending machine according to claim 1, characterized in that: The slider is slidably mounted on the frame.

6. The back pressure device for the all-electric bending machine according to claim 5, characterized in that: The frame is equipped with a slide rail, and the slider is slidably mounted on the slide rail.

7. The back pressure device for the all-electric bending machine according to claim 1, characterized in that: Limiting components are provided on both sides of the slider.

8. The back pressure device for the all-electric bending machine according to claim 7, characterized in that: The limiting component includes a rolling wheel and a mounting block mounted on the frame. The rolling wheel is rotatably mounted on the mounting block, and the rolling wheels located on the left and right sides of the slider are slidably mounted with the left and right sides of the mounting block, respectively.

9. The back pressure device for the all-electric bending machine according to claim 8, characterized in that: The slider is also provided with limiting steps on the left and right sides that abut against the rolling wheel.

10. The back pressure device for the all-electric bending machine according to claim 1, characterized in that: The rack is equipped with a display.

Images