Flatness-adjusting straightening mechanism

Abstract

This utility model discloses a flatness-adjustable straightening mechanism, relating to the field of machining and precision adjustment technology. It includes a base, a horizontal worktable mounted on the base, and a straightening assembly positioned above the horizontal worktable. The straightening assembly comprises multiple straightening units, each including a straightening pressure plate and a straightening support plate, with a straightening gap formed between the pressure plate and the support plate. The bottom of the pressure plate has multiple adsorption holes connected to a vacuum pump via pipelines. The support plate is fixed to the horizontal worktable, and its top has a positioning groove for placing the workpiece. This utility model provides a flatness-adjustable straightening mechanism that, through the design of a partitioned adsorption module and combined with feedback signals from a pressure sensor, can dynamically compensate for local flatness deviations of the workpiece, thereby improving straightening accuracy and applicability.

Description

Technical Field

[0001] This utility model relates to the field of machining and precision adjustment technology, specifically to a flatness-adjustable straightening mechanism. Background Technology

[0002] With the continuous development of the metal processing industry, straightening mechanisms play a vital role in the processing of various bars, wires, and tubes. Traditional straightening mechanisms primarily achieve material straightening through mechanical adjustment. However, in practical applications, existing straightening mechanisms have certain limitations when dealing with workpieces of different specifications or complex shapes. For example, they may be insufficient in quickly and accurately adjusting flatness, which could lead to lower straightening efficiency, less than ideal accuracy, or even damage to the workpiece surface, thus affecting the quality of subsequent processing.

[0003] A search revealed a pre-straightening mechanism with patent number CN112893526B. This solution, through the use of a positioning plate, mounting frame, and knobs, can adjust the guide aperture of the pipe to accommodate the processing needs of pipes with different diameters. However, this solution exhibits certain limitations in flatness adjustment: the adjustment process relies on manual operation, resulting in limited automation; furthermore, due to its relatively fixed structural design, it may lead to uneven straightening or over-straightening when dealing with multi-dimensional straightening requirements under complex bending conditions.

[0004] In addition, a smart synchronous opening and closing straightening mechanism with patent number CN107350391B was also found. This solution uses a combination of motor drive and pneumatic module, which can automatically adjust the straightening spacing according to the change of wire harness diameter, thereby improving the applicability and work efficiency. Nevertheless, this solution also exhibits certain characteristics: its straightening wheels can only be adjusted to open and close in a fixed direction, which is insufficient for dynamic compensation of local flatness deviations of the workpiece; at the same time, its control system does not involve a feedback correction mechanism for the material springback effect during the straightening process, so in high-precision application scenarios, the consistency and stability of the final straightening effect may be affected.

[0005] The aforementioned problems indicate that traditional straightening mechanisms currently on the market still have room for improvement in terms of automation, adjustment flexibility, and response speed when facing diverse and high-precision flatness adjustment requirements. This invention aims to provide a flatness-adjustable straightening mechanism that controls the adsorption force of the processing plate to ensure stable positioning on a horizontal plane. Combined with an adjustable adsorption force design, this further optimizes the intelligence level and production efficiency of the straightening operation. Utility Model Content

[0006] This utility model provides a flatness-adjustable straightening mechanism. By introducing a design that combines adsorption force control with multi-dimensional straightening functions, it solves the problem of insufficient flatness adjustment capability of traditional straightening mechanisms when dealing with complex workpieces. The specific solution is as follows:

[0007] A flatness-adjustable straightening mechanism includes a base, a horizontal worktable mounted on the base, and a straightening assembly disposed above the horizontal worktable. The straightening assembly includes multiple straightening units, each including a straightening pressure plate and a straightening support plate, with a straightening gap formed between the straightening pressure plate and the straightening support plate. The bottom of the straightening pressure plate has multiple adsorption holes, which are connected to a vacuum pump via pipelines. The straightening support plate is fixed to the horizontal worktable, and its top has a positioning groove for placing workpieces. The straightening pressure plate is slidably connected to the horizontal worktable via a guide rod, and an elastic element is sleeved on the guide rod. One end of the elastic element is fixedly connected to the straightening pressure plate, and the other end is fixedly connected to the horizontal worktable. The top of the straightening pressure plate is connected to a driving device via a connecting rod, and the driving device is used to drive the straightening pressure plate to move up and down along the guide rod.

[0008] As a preferred embodiment of the flatness-adjustable straightening mechanism of this utility model, the bottom of the straightening pressure plate is provided with an adjustable adsorption force partition adsorption module, the partition adsorption module includes multiple independent adsorption areas, each adsorption area is connected to a vacuum pump through an independent pipeline; the independent pipeline is provided with a flow regulating valve, which is used to adjust the adsorption force of the corresponding adsorption area according to the local flatness deviation of the workpiece.

[0009] As a preferred embodiment of the flatness-adjustable straightening mechanism of this utility model, the positioning groove of the straightening support plate is embedded with multiple pressure sensors, which are used to detect the force distribution of the workpiece during the straightening process; the pressure sensors are electrically connected to the control system, and the control system adjusts the downward pressure of the straightening pressure plate and the adsorption force of the partition adsorption module according to the feedback signal of the pressure sensors.

[0010] As a preferred embodiment of the flatness-adjustable straightening mechanism of this utility model, the top of the straightening pressure plate is provided with multiple limiting blocks, which are fixed to the straightening pressure plate by threaded connection; the bottom of the limiting block is provided with a buffer pad, which is used to avoid damage to the surface of the workpiece during the pressing down of the straightening pressure plate; the height of the limiting block can be adjusted by rotation to accommodate workpieces of different thicknesses.

[0011] In a preferred embodiment of the flatness-adjustable straightening mechanism of this utility model, the driving device includes a motor, a lead screw, and a slider. The output shaft of the motor is connected to the lead screw, and both ends of the lead screw are fixed to a horizontal worktable via bearing seats. The slider is threadedly connected to the lead screw, and the bottom of the slider is connected to the straightening pressure plate via a connecting rod. The motor is driven by a control system, which adjusts the motor speed and direction according to the flatness deviation signal of the workpiece.

[0012] As a preferred embodiment of the flatness adjustment straightening mechanism of this utility model, the positioning groove of the straightening support plate is provided with a plurality of micro airbags, and the micro airbags are connected to the air pump through air pipes; the micro airbags are used to perform preliminary positioning of the workpiece during the workpiece placement process, and to adjust the initial flatness of the workpiece by inflating or deflating the airbags.

[0013] As a preferred embodiment of the flatness-adjustable straightening mechanism of this utility model, the bottom of the straightening pressure plate is provided with a plurality of auxiliary straightening rollers, which are fixedly connected to the straightening pressure plate by a bracket; the outer wall of the auxiliary straightening roller is provided with an elastic layer, which is used to reduce frictional damage to the workpiece surface during the straightening process; the rotation direction of the auxiliary straightening roller is consistent with the straightening direction of the workpiece.

[0014] As a preferred embodiment of the flatness adjustment straightening mechanism of this utility model, the bottom of the horizontal worktable is provided with a plurality of leveling bolts, which are fixed to the base by means of threaded connection; the top of the leveling bolt is provided with a ball joint, which contacts the bottom of the horizontal worktable; the leveling bolt is used to adjust the levelness of the horizontal worktable to ensure the flatness accuracy of the workpiece during the straightening process.

[0015] As a preferred embodiment of the flatness-adjustable straightening mechanism of this utility model, the top of the straightening pressure plate is provided with multiple cooling channels, which are connected to the coolant circulation system through pipes; the cooling channels are used to cool the straightening pressure plate during the straightening process to avoid the straightening effect being affected by the temperature rise of the straightening pressure plate due to long-term operation.

[0016] As a preferred embodiment of the flatness-adjustable straightening mechanism of this utility model, the positioning groove of the straightening support plate is provided with a plurality of magnetic positioning blocks, which are connected to the control system via electromagnets; the magnetic positioning blocks are used to quickly position the workpiece during the workpiece placement process, and the attraction force of the magnetic positioning blocks is adjusted by the signal of the control system.

[0017] Compared with the prior art, the present invention has at least the following technical features:

[0018] This invention, through the design of a partitioned adsorption module and combined with the feedback signal of a pressure sensor, can dynamically compensate for local flatness deviations of the workpiece, thereby improving straightening accuracy and applicability.

[0019] This invention utilizes a combination of micro airbags and magnetic positioning blocks to achieve rapid positioning and initial flatness adjustment during workpiece placement, reducing manual intervention and improving work efficiency.

[0020] This invention effectively avoids damage to the workpiece surface during the straightening process through the design of limiting blocks and auxiliary straightening rollers. At the same time, the addition of an elastic layer further reduces friction and improves the straightening quality.

[0021] This invention uses a cooling channel design to cool the straightening pressure plate during long-term operation, preventing a decrease in straightening effect due to temperature rise and ensuring the stability of the straightening operation.

[0022] This invention, through the combined use of leveling bolts and ball joints, can quickly adjust the levelness of the horizontal worktable, thereby providing a stable reference surface for straightening operations and further improving straightening accuracy. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0024] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0025] Figure 2 This is a magnified view of a portion of the straightening component.

[0026] Figure 3 This is a schematic diagram of the straightening pressure plate.

[0027] Figure 4 This is a schematic diagram of the bottom structure of the horizontal worktable.

[0028] Figure 5 This is a schematic diagram of the internal structure of the positioning groove of the straightening support plate.

[0029] The attached figures are labeled as follows:

[0030] 1. Base; 2. Horizontal worktable; 3. Straightening assembly; 4. Straightening pressure plate; 5. Straightening support plate; 6. Adsorption hole; 7. Partitioned adsorption module; 8. Positioning groove; 9. Guide rod; 10. Elastic element; 11. Connecting rod; 12. Drive device; 13. Limiting block; 14. Cooling channel; 15. Auxiliary straightening roller; 16. Leveling bolt; 17. Ball joint; 18. Miniature airbag; 19. Magnetic positioning block; 20. Pressure sensor; 21. Flow regulating valve; 22. Lead screw. Detailed Implementation

[0031] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0032] This utility model provides a flatness-adjustable straightening mechanism, the structure of which is as follows: Figure 1 As shown, the mechanism includes a base 1, a horizontal worktable 2, a straightening assembly 3, and a drive device 12. The base 1 serves as the supporting foundation for the entire mechanism. The horizontal worktable 2 is fixedly mounted on the base 1, and the straightening assembly 3 is positioned above the horizontal worktable 2 and works in conjunction with it to complete the straightening operation. The straightening assembly 3 consists of multiple straightening units. Each straightening unit includes a straightening pressure plate 4 and a straightening support plate 5, forming a straightening gap between the straightening pressure plate 4 and the straightening support plate 5 to accommodate the workpiece. The straightening pressure plate 4 is slidably connected to the horizontal worktable 2 via a guide rod 9. An elastic element 10 is sleeved on the guide rod 9, with one end of the elastic element 10 fixedly connected to the straightening pressure plate 4 and the other end fixedly connected to the horizontal worktable 2. The top of the straightening pressure plate 4 is connected to the drive device 12 via a connecting rod 11. The drive device 12 is used to drive the straightening pressure plate 4 to move up and down along the guide rod 9.

[0033] The bottom of the straightening pressure plate 4 is provided with multiple adsorption holes 6, which are connected to a vacuum pump via pipelines to apply adsorption force to the workpiece during the straightening process. To adjust the local adsorption force, the bottom of the straightening pressure plate 4 is also provided with a zoned adsorption module 7, which contains multiple independent adsorption areas. Each adsorption area is connected to the vacuum pump via an independent pipeline, and a flow regulating valve 21 is installed on each independent pipeline. The flow regulating valve 21 adjusts the adsorption force of the corresponding adsorption area according to the local flatness deviation of the workpiece, thereby achieving dynamic compensation for different areas of the workpiece. The straightening support plate 5 is fixed on the horizontal worktable 2, and its top is provided with a positioning groove 8 for placing the workpiece. Multiple pressure sensors 20 are embedded in the positioning groove 8. The pressure sensors 20 are electrically connected to the control system to detect the force distribution of the workpiece during the straightening process and transmit feedback signals to the control system. The control system adjusts the downward pressure of the straightening pressure plate 4 and the adsorption force of the zoned adsorption module 7 according to the feedback signals.

[0034] The top of the straightening pressure plate 4 is provided with multiple limiting blocks 13, which are fixed to the straightening pressure plate 4 by threaded connection. The bottom of the limiting blocks 13 is provided with a buffer pad to prevent damage to the workpiece surface during the downward pressing of the straightening pressure plate 4. The height of the limiting blocks 13 can be adjusted by rotation to accommodate workpieces of different thicknesses. The top of the straightening pressure plate 4 is also provided with multiple cooling channels 14, which are connected to a coolant circulation system via pipes to cool the straightening pressure plate 4 during the straightening process, preventing the straightening effect from being affected by the increased temperature of the straightening pressure plate 4 due to prolonged operation. The bottom of the straightening pressure plate 4 is provided with multiple auxiliary straightening rollers 15, which are fixedly connected to the straightening pressure plate 4 by brackets. The outer wall of the auxiliary straightening rollers 15 is provided with an elastic layer to reduce frictional damage to the workpiece surface during the straightening process. The rotation direction of the auxiliary straightening rollers 15 is consistent with the straightening direction of the workpiece.

[0035] The drive unit 12 includes a motor, a lead screw 22, and a slider. The output shaft of the motor is connected to the lead screw 22, and both ends of the lead screw 22 are fixed to the horizontal worktable 2 via bearing seats. The slider is threadedly connected to the lead screw 22, and the bottom of the slider is connected to the straightening pressure plate 4 via a connecting rod 11. The motor is driven by a control system, which adjusts the motor speed and direction according to the flatness deviation signal of the workpiece, thereby controlling the up-and-down movement speed and position of the straightening pressure plate 4.

[0036] The positioning groove 8 of the straightening support plate 5 is equipped with multiple micro airbags 18. The micro airbags 18 are connected to an air pump via air pipes and are used to initially position the workpiece during placement. The initial flatness of the workpiece is adjusted by inflating or deflating the airbags. The positioning groove 8 is also equipped with multiple magnetic positioning blocks 19. The magnetic positioning blocks 19 are connected to the control system via electromagnets and are used to quickly position the workpiece during placement. The attraction force of the magnetic positioning blocks 19 is adjusted by signals from the control system.

[0037] The bottom of the horizontal worktable 2 is provided with multiple leveling bolts 16. The leveling bolts 16 are fixed to the base 1 by threaded connection. The top of the leveling bolts 16 is provided with ball joints 17. The ball joints 17 contact the bottom of the horizontal worktable 2. The leveling bolts 16 are used to adjust the levelness of the horizontal worktable 2 to ensure the flatness accuracy of the workpiece during the straightening process.

[0038] In practical applications, the operator first places the workpiece in the positioning groove 8 of the straightening support plate 5. The micro airbag 18 is inflated by an air pump to initially position the workpiece and adjust its initial flatness. Simultaneously, the magnetic positioning block 19 generates an adsorption force through an electromagnet, further fixing the workpiece's position. Then, the drive device 12 is activated, the motor drives the lead screw 22 to rotate, and the slider moves along the lead screw 22, driving the straightening pressure plate 4 downwards via the connecting rod 11. The bottom of the straightening pressure plate 4 applies adsorption force to the workpiece through the adsorption holes 6 and the zoned adsorption module 7. The flow regulating valve 21 adjusts the adsorption force of each adsorption area based on the feedback signal from the pressure sensor 20 to compensate for local flatness deviations of the workpiece. During the downward pressing process, the height of the limiting block 13 can be pre-adjusted to accommodate the workpiece thickness, and the buffer pad prevents damage to the workpiece surface. The auxiliary straightening roller 15 rolls with the movement of the straightening pressure plate 4, and the elastic layer reduces frictional damage to the workpiece surface. After straightening is completed, the straightening pressure plate 4 moves upwards to reset, and the workpiece is removed, completing the straightening operation.

[0039] The leveling bolts 16 of the horizontal worktable 2 adjust the height of the ball joint 17 by rotating them, thereby changing the tilt angle of the horizontal worktable 2 to ensure that its levelness meets the straightening requirements. The cooling channel 14 of the straightening pressure plate 4 continuously circulates coolant throughout the straightening process to prevent the temperature of the straightening pressure plate 4 from rising due to prolonged operation and affecting the straightening effect.

[0040] To enable those skilled in the art to fully understand and implement this utility model, the following explanation of the specific implementation principle of this utility model is provided in conjunction with a specific application scenario.

[0041] First, the operator places the workpiece to be straightened into the positioning slot 8 of the straightening support plate 5. At this time, the miniature airbags 18 inside the positioning slot 8 are inflated by an air pump to initially position the workpiece and adjust its initial flatness. The design of the miniature airbags 18 allows the workpiece to automatically adapt to its shape and size during placement, avoiding poor straightening results due to initial positional deviations. Simultaneously, the magnetic positioning block 19 generates an attractive force through the energization of an electromagnet, further fixing the workpiece's position. The magnitude of the attractive force of the magnetic positioning block 19 is dynamically adjusted by the control system based on the workpiece's material and thickness signals, ensuring the workpiece is in its optimal initial state before straightening.

[0042] Subsequently, the drive unit 12 is activated, the motor drives the lead screw 22 to rotate, and the slider moves along the lead screw 22 and drives the straightening pressure plate 4 downward through the connecting rod 11. The bottom of the straightening pressure plate 4 is provided with multiple adsorption holes 6 and a zoned adsorption module 7. The adsorption holes 6 are connected to a vacuum pump through pipelines to apply adsorption force to the workpiece during the straightening process. The zoned adsorption module 7 contains multiple independent adsorption areas, each of which is connected to the vacuum pump through an independent pipeline, and a flow regulating valve 21 is provided on the independent pipeline. During the straightening process, the pressure sensor 20 detects the force distribution on the workpiece in real time and transmits the feedback signal to the control system. The control system adjusts the adsorption force of each adsorption area according to the feedback signal to compensate for local flatness deviations of the workpiece. This zoned adsorption design allows the straightening mechanism to dynamically adjust for the degree of curvature in different areas of the workpiece, thereby significantly improving straightening accuracy.

[0043] During the downward pressing of the straightening pressure plate 4, the height of the limiting block 13 can be adjusted by rotation to accommodate the thickness of the workpiece. A buffer pad is provided at the bottom of the limiting block 13, which prevents damage to the workpiece surface when the straightening pressure plate 4 is pressed down. In addition, multiple auxiliary straightening rollers 15 are provided at the bottom of the straightening pressure plate 4, and these rollers are fixedly connected to the straightening pressure plate 4 via brackets. The outer wall of the auxiliary straightening rollers 15 is provided with an elastic layer, which reduces frictional damage to the workpiece surface during straightening. Simultaneously, their rotation direction is consistent with the straightening direction of the workpiece, further optimizing the straightening effect.

[0044] After straightening is completed, the straightening pressure plate 4 moves upward to reset, and the workpiece is removed, completing the straightening operation. Throughout the straightening process, the leveling bolt 16 of the horizontal worktable 2 adjusts the height of the ball joint 17 by rotating it, thereby changing the tilt angle of the horizontal worktable 2 to ensure that its levelness meets the straightening requirements. The matching design of the leveling bolt 16 and the ball joint 17 enables the horizontal worktable 2 to achieve precise leveling quickly, providing a stable reference surface for the straightening operation.

[0045] In addition, the top of the straightening pressure plate 4 is equipped with multiple cooling channels 14, which are connected to the coolant circulation system via pipes. During the straightening process, coolant is continuously introduced into the cooling channels 14 to cool the straightening pressure plate 4, preventing the temperature of the straightening pressure plate 4 from rising due to prolonged operation and affecting the straightening effect. The design of the cooling channels 14 effectively solves the problem of decreased straightening accuracy in traditional straightening mechanisms under high-temperature environments, ensuring the stability of the straightening operation.

[0046] In summary, this invention achieves efficient and precise straightening of workpieces through the synergistic effect of structures such as the micro airbag 18, magnetic positioning block 19, partitioned adsorption module 7, pressure sensor 20, auxiliary straightening roller 15, and cooling channel 14. The steps and principles of the specific application scenarios described above illustrate how this invention, through multi-dimensional design optimization, overcomes the limitations of traditional straightening mechanisms in straightening complex workpieces, thereby significantly improving straightening efficiency and accuracy.

[0047] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A flatness-adjustable straightening mechanism, comprising a base (1), a horizontal worktable (2), and a straightening assembly (3), characterized in that: The horizontal worktable (2) is mounted on the base (1), and the straightening assembly (3) is positioned above the horizontal worktable (2). The straightening assembly (3) includes multiple straightening units, each of which includes a straightening pressure plate (4) and a straightening support plate (5). A straightening gap is formed between the straightening pressure plate (4) and the straightening support plate (5). The bottom of the straightening pressure plate (4) is provided with multiple adsorption holes (6), which are connected to a vacuum pump through pipelines. The straightening support plate (5) is fixed on the horizontal worktable (2), and its top is provided with a positioning groove (8). The straightening pressure plate (4) is slidably connected to the horizontal worktable (2) through a guide rod (9). An elastic element (10) is sleeved on the guide rod (9). One end of the elastic element (10) is fixedly connected to the straightening pressure plate (4), and the other end is fixedly connected to the horizontal worktable (2). The top of the straightening pressure plate (4) is connected to the driving device (12) through a connecting rod (11).

2. The flatness-adjustable straightening mechanism according to claim 1, characterized in that, The bottom of the straightening plate (4) is provided with a partitioned adsorption module (7). The partitioned adsorption module (7) includes multiple independent adsorption areas. Each adsorption area is connected to a vacuum pump through an independent pipeline. A flow regulating valve (21) is provided on the independent pipeline.

3. The flatness-adjustable straightening mechanism according to claim 1, characterized in that, The positioning groove (8) of the straightening support plate (5) is embedded with multiple pressure sensors (20), and the pressure sensors (20) are electrically connected to the control system.

4. The flatness-adjustable straightening mechanism according to claim 1, characterized in that, The top of the straightening pressure plate (4) is provided with multiple limiting blocks (13), which are fixed to the straightening pressure plate (4) by threaded connection, and the bottom of the limiting block (13) is provided with a buffer pad.

5. The flatness-adjustable straightening mechanism according to claim 1, characterized in that, The drive device (12) includes a motor, a lead screw (22) and a slider. The output shaft of the motor is connected to the lead screw (22). The two ends of the lead screw (22) are fixed on the horizontal worktable (2) through bearing seats. The slider is threadedly connected to the lead screw (22). The bottom of the slider is connected to the straightening pressure plate (4) through a connecting rod (11).

6. The flatness-adjustable straightening mechanism according to claim 1, characterized in that, The positioning groove (8) of the straightening support plate (5) is provided with multiple micro airbags (18), and the micro airbags (18) are connected to the air pump through air tubes.

7. The flatness-adjustable straightening mechanism according to claim 1, characterized in that, The bottom of the straightening pressure plate (4) is provided with multiple auxiliary straightening rollers (15). The auxiliary straightening rollers (15) are fixedly connected to the straightening pressure plate (4) through a bracket. The outer wall of the auxiliary straightening rollers (15) is provided with an elastic layer.

8. The flatness-adjustable straightening mechanism according to claim 1, characterized in that, The bottom of the horizontal worktable (2) is provided with multiple leveling bolts (16). The leveling bolts (16) are fixed to the base (1) by threaded connection. The top of the leveling bolts (16) is provided with ball joints (17), which are in contact with the bottom of the horizontal worktable (2).

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