A roll bending machine

Abstract

The utility model belongs to the technical field of roll bending machine, specifically disclose a kind of roll bending machine, including rack, be provided with upper compression roller assembly and lower compression roller assembly on the rack, the lower compression roller assembly includes two parallelly arranged lower compression roller shaft and lower compression roller, the upper compression roller assembly includes upper compression roller shaft and upper compression roller, the upper compression roller is located between two the upper of lower compression roller, upper compression roller shaft is provided with anti-warping mechanism, two the lower compression roller shaft is connected through bearing support by the end of lower compression roller stretching out. Upper compression roller shaft is provided with anti-warping mechanism, and bearing support is connected between two lower compression roller shaft simultaneously, when the workpiece of larger weight is processed, under larger pressure, upper compression roller shaft and lower compression roller shaft are not easy to bend, ensure that the rotation shaft runs smoothly, improve roll bending processing precision.

Description

Technical Field

[0001] This utility model relates to the field of bending machine technology. Background Technology

[0002] Roll bending machines are commonly used bending equipment for aluminum alloys and various metal profiles. They can process shapes such as circles, arcs, ellipses, and parabolas, offering advantages such as high bending precision and efficiency. Currently, the roll bending machines on the market are mainly three-axis roll bending machines. The three axes are arranged with two horizontally spaced and fixed, and the third vertically adjustable. The vertically positioned axis is the upper pressure roller axis, and the two horizontally spaced axes are the lower pressure roller axes. The upper pressure roller axis is driven by a drive mechanism to move and perform the roll bending, while the two lower pressure roller axes are driven by a drive motor to rotate, moving the profile on it. During operation, the three axes work together to bend the profile.

[0003] However, existing roll bending machines rely solely on the connection points between the three shafts and the lifting mechanism or the machine frame as support points, resulting in weak support. When processing heavy workpieces, the workpiece exerts a reaction force on the upper pressure roller as it applies pressure, easily causing the front end of the upper pressure roller shaft to bend upwards. Simultaneously, the pressure applied by the upper pressure roller is transferred downwards from the workpiece to the lower pressure rollers, easily causing the two lower pressure rollers to bend axially in both directions. Prolonged use can easily damage the roller shafts, compromising the stability and straightness of the roll bending wheel shaft operation. Utility Model Content

[0004] In order to overcome the defects of the existing technology, this utility model provides a roll bending machine to solve the problems in the existing technology.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a bending machine, including a frame, on which an upper pressure roller assembly and a lower pressure roller assembly are arranged. The lower pressure roller assembly includes two parallel lower pressure roller shafts and a lower pressure roller. The upper pressure roller assembly includes an upper pressure roller shaft and an upper pressure roller. The upper pressure roller is located above the two lower pressure rollers. An anti-warping mechanism is provided on the upper pressure roller shaft. The ends of the two lower pressure roller shafts extending out of the lower pressure rollers are connected by a bearing bracket.

[0006] In the aforementioned bending machine, a base plate is provided inside the frame, a lifting mechanism is provided on the base plate, the upper pressure roller shaft passes through the lifting mechanism, a central shaft support rod is fixedly connected to one side of the lifting mechanism, the central shaft support rod is arranged parallel above the upper pressure roller shaft, a front support plate is provided on one end of the upper pressure roller shaft, and a support column passes through the middle of the front support plate and the central shaft support rod.

[0007] In the aforementioned roll bending machine, the lifting mechanism includes two symmetrically arranged guide rail columns. Linear guide rails are fixedly connected to both sides of the guide rail columns, and sliders are slidably connected to the linear guide rails. Front slider plates and rear slider plates are fixedly connected to the sliders located on the front and rear sides of the guide rail columns, respectively. The upper ends of the front slider plates and the rear slider plates are connected by an upper fixing plate, and the lower ends of the front slider plates and the rear slider plates are connected by a lower fixing plate. The central shaft support rod is connected to the front slider plate, and the lifting mechanism is provided with a first driving mechanism to drive its up and down movement.

[0008] In the aforementioned bending machine, the first drive mechanism includes a first drive unit disposed on one side of the lifting mechanism. The output end of the first drive unit is connected to a first synchronous pulley. The upper end of the lifting mechanism is provided with a second synchronous pulley. The first synchronous pulley and the second synchronous pulley are connected by a synchronous belt drive. A lead screw nut seat is fixedly connected to the upper end of the upper fixed plate. A lead screw is passed through the second synchronous pulley, the lead screw nut seat, and the upper fixed plate.

[0009] In the aforementioned bending machine, a second drive mechanism is provided on the lifting mechanism, which drives the upper pressure roller shaft to rotate around its own axis.

[0010] In the aforementioned roll bending machine, the second drive mechanism includes a second drive unit disposed on one side of the rear slide plate, the output end of the second drive unit is connected to a third synchronous pulley, and a fourth synchronous pulley is disposed at one end of the upper pressure roller shaft extending out of the rear slide plate. The third synchronous pulley and the fourth synchronous pulley are connected by a synchronous belt drive.

[0011] In the aforementioned roll bending machine, a third drive assembly is provided inside the bracket to drive the lower pressure roller shaft to rotate around its own axis. The third drive assembly includes a third drive part disposed on one side of the base plate. A lower rotating shaft seat is fixedly connected to the lower end of the base plate. The third drive part is fixedly connected to the lower rotating shaft seat. A first gear is connected to the output end of the third drive part. A second gear and a third gear are respectively disposed at one end of the two lower pressure roller shafts. The first gear, the second gear, and the third gear are connected by chain drive.

[0012] In the aforementioned roll bending machine, the power source devices for the first drive unit, the second drive unit, and the third drive unit are all servo motors.

[0013] In the aforementioned roll bending machine, an encoder device is provided at the lower end of the lower pressure roller assembly.

[0014] The beneficial effects of this utility model are: an anti-warping mechanism is provided on the upper pressure roller shaft, and a bearing bracket is connected between the two lower pressure roller shafts. When processing heavy workpieces, the upper and lower pressure roller shafts are not easy to bend under greater pressure, ensuring smooth operation of the rotating shaft and improving the rolling bending accuracy. Attached Figure Description

[0015] Figure 1 This is a three-dimensional schematic diagram of the roll bending machine in this embodiment; Figure 2 This is a schematic diagram of the internal structure of the roll bending machine in this embodiment. Figure 1 ; Figure 3 This is a schematic diagram of the internal structure of the roll bending machine in this embodiment. Figure 2 ; Figure 4 for Figure 3 Enlarged view of point A in the image; Figure 5 This is a three-dimensional schematic diagram of the lifting mechanism, the first drive mechanism, and the upper pressure roller assembly in this embodiment. Figure 1 ; Figure 6 This is a three-dimensional schematic diagram of the lifting mechanism, the first drive mechanism, and the upper pressure roller assembly in this embodiment. Figure 2 .

[0016] In the diagram, 10-frame, 20-upper pressure roller assembly, 201-upper pressure roller shaft, 202-upper pressure roller, 30-lower pressure roller assembly, 301-lower pressure roller shaft, 302-lower pressure roller, 40-anti-tilting mechanism, 401-central shaft support rod, 402-front support plate, 403-support column, 50-bearing bracket, 60-base plate, 70-lifting mechanism, 701-guide rail column, 702-linear guide rail, 703-slider, 704-front slider plate, 705-rear slider plate, 706-upper fixed plate, 707 - Lower fixed plate, 80- First drive mechanism, 801- First drive unit, 802- First synchronous pulley, 803- Second synchronous pulley, 804- Lead screw nut seat, 805- Lead screw, 90- Second drive mechanism, 901- Second drive unit, 902- Third synchronous pulley, 903- Fourth synchronous pulley, 100- Third drive assembly, 1001- Third drive unit, 1002- Lower rotating shaft seat, 1003- First gear, 1004- Second gear, 1005- Third gear, 110- Encoder device. Detailed Implementation

[0017] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. It should be noted that these descriptions are for the purpose of aiding understanding of this utility model, but do not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0018] Combination Figures 1 to 6 A roll bending machine includes a frame 10, on which an upper pressure roller assembly 20 and a lower pressure roller assembly 30 are mounted. The lower pressure roller assembly 30 includes two parallel lower pressure roller shafts 301 and lower pressure rollers 302. The upper pressure roller assembly 20 includes an upper pressure roller shaft 201 and an upper pressure roller 202, with the upper pressure roller 202 positioned above the two lower pressure rollers 302. An anti-warping mechanism 40 is provided on the upper pressure roller shaft 201. One end of the two lower pressure roller shafts 301 extending out of the lower pressure rollers 302 is connected by a bearing bracket 50. With the anti-warping mechanism on the upper pressure roller shaft and the bearing bracket connecting the two lower pressure roller shafts, when processing heavy workpieces, the upper and lower pressure roller shafts are less prone to bending under high pressure, ensuring smooth rotation of the shaft and improving the accuracy of the roll bending process.

[0019] Specifically, in this embodiment, a base plate 60 is provided inside the frame 10, and a lifting mechanism 70 is provided on the base plate 60. The upper pressure roller shaft 201 passes through the lifting mechanism 70. A central shaft support rod 401 is fixedly connected to one side of the lifting mechanism 70. The central shaft support rod 401 is arranged parallel above the upper pressure roller shaft 201. A front support plate 402 is provided on one end of the upper pressure roller shaft 201. A support column 403 passes through the middle of the front support plate 402 and the central shaft support rod 401. The support column 403 is a lead screw. When processing heavy workpieces, the lead screw is first passed through the central shaft support rod 401 from top to bottom, and then screwed into the screw hole at the upper end of the front support plate 402. Then, the nuts are tightened at the two ends of the lead screw and the central shaft support rod. When the bending machine is running, when the upper pressure roller shaft tilts upward, the central shaft support rod gives it a reaction force through the lead screw to prevent it from bending upward.

[0020] The lifting mechanism 70 of this embodiment includes two symmetrically arranged guide rail columns 701. Linear guide rails 702 are fixedly connected to both sides of the guide rail columns 701. Slider blocks 703 are slidably connected to the linear guide rails 702. Front slider plates 704 and rear slider plates 705 are fixedly connected to the sliders 703 located on the front and rear sides of the guide rail columns 701, respectively. The upper ends of the front slider plates 704 and rear slider plates 705 are connected by an upper fixing plate 706, and the lower ends are connected by a lower fixing plate 707. A central shaft support rod 401 is connected to the front slider plate 704. The lifting mechanism 70 is equipped with a first drive mechanism 80 for driving its up and down movement. When the bending machine is loading and unloading materials, the upper pressure roller needs to be raised and lowered. The upper pressure roller shaft passes through the lifting mechanism. The first drive mechanism drives the lifting mechanism, thus achieving the raising and lowering of the upper pressure roller. The lifting mechanism is a combination device of linear guide rails and sliders, with a compact structure, convenient installation, and the ability to achieve rapid movement.

[0021] Specifically, the first drive mechanism 80 in this embodiment includes a first drive unit 801 disposed on one side of the lifting mechanism 70. The output end of the first drive unit 801 is connected to a first synchronous pulley 802. A second synchronous pulley 803 is disposed at the upper end of the lifting mechanism 70. The first synchronous pulley 802 and the second synchronous pulley 803 are connected by a synchronous belt drive. A lead screw nut seat 804 is fixedly connected to the upper end of the upper fixed plate 706. A lead screw 805 is passed through the second synchronous pulley 803, the lead screw nut seat 804, and the upper fixed plate 706. The lead screw has the advantages of high precision, high efficiency, and easy maintenance, which improves the bending efficiency. At the same time, by setting two synchronous pulleys for transmission, the first drive unit is prevented from directly contacting the lead screw, which could easily cause damage to the drive unit.

[0022] In this embodiment, the lifting mechanism 70 is provided with a second driving mechanism 90, which drives the upper pressure roller shaft 201 to rotate around its own axis; the second driving mechanism drives the upper pressure roller shaft to rotate, thereby causing the workpiece to move and bend in the horizontal direction.

[0023] Preferably, the second drive mechanism 90 in this embodiment includes a second drive part 901 disposed on one side of the rear slider plate 705. The output end of the second drive part 901 is connected to a third synchronous wheel 902. A fourth synchronous wheel 903 is disposed at one end of the upper pressure roller shaft 201 extending out of the rear slider plate 705. The third synchronous wheel 902 and the fourth synchronous wheel 903 are connected by a synchronous belt drive. The second drive mechanism is located on the lifting mechanism and can drive the upper pressure roller to rotate while the lifting mechanism drives the upper pressure roller to rise and fall. At the same time, the transmission is carried out by setting two synchronous wheels to avoid the second drive part directly contacting the upper pressure roller shaft, which could easily cause damage to the drive part.

[0024] It is worth noting that the frame 10 is equipped with a third drive assembly 100 that drives the lower pressure roller shaft 301 to rotate around its own axis. The third drive assembly 100 includes a third drive section 1001 disposed on one side of the base plate 60. A lower rotating shaft seat 1002 is fixedly connected to the lower end of the base plate 60. The third drive section 1001 is fixedly connected to the lower rotating shaft seat 1002. The output end of the third drive section 1001 is connected to a first gear 1003. A second gear 1004 and a third gear 1005 are respectively disposed at one end of the two lower pressure roller shafts 301. The first gear 1003, the second gear 1004, and the third gear 1005 are connected by chain transmission. The third drive section synchronously controls the two lower pressure roller shafts to rotate in the same direction through three synchronous gears, thereby driving the workpiece to move horizontally. There is no need to set up two drive sections, which makes the structure compact and reduces costs.

[0025] In this embodiment, the power source devices of the first drive unit 801, the second drive unit 901, and the third drive unit 1001 are all servo motors. Unlike traditional bending machines that use hydraulic presses, the bending machine drive device of this utility model is a servo motor, which has the advantages of high precision, fast response, stable operation, and easy maintenance, thereby improving the working efficiency of the bending machine.

[0026] Preferably, in this embodiment, the lower end of the pressure roller assembly 30 is provided with an encoder device 110; in order to facilitate the monitoring of the working efficiency of the bending machine and accurately control the size of the workpiece, the encoder device 110 can accurately measure the displacement of the workpiece to meet production requirements.

[0027] The embodiments of this utility model have been described in detail above with reference to the accompanying drawings, but this utility model is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this utility model, and these variations still fall within the protection scope of this utility model.

Claims

1. A bending machine, characterized in that: The machine includes a frame (10), on which an upper pressure roller assembly (20) and a lower pressure roller assembly (30) are provided. The lower pressure roller assembly (30) includes two parallel lower pressure roller shafts (301) and a lower pressure roller (302). The upper pressure roller assembly (20) includes an upper pressure roller shaft (201) and an upper pressure roller (202). The upper pressure roller (202) is located above the two lower pressure rollers (302). An anti-tilting mechanism (40) is provided on the upper pressure roller shaft (201). The two lower pressure roller shafts (301) are connected by a bearing bracket (50) at one end extending out of the lower pressure roller (302).

2. A bending machine according to claim 1, characterized in that: A base plate (60) is provided inside the frame (10), and a lifting mechanism (70) is provided on the base plate (60). The upper pressure roller shaft (201) passes through the lifting mechanism (70). A central shaft support rod (401) is fixedly connected to one side of the lifting mechanism (70). The central shaft support rod (401) is arranged parallel above the upper pressure roller shaft (201). A front support plate (402) is provided on one end of the upper pressure roller shaft (201). A support column (403) passes through the middle between the front support plate (402) and the central shaft support rod (401).

3. A bending machine according to claim 2, characterized in that: The lifting mechanism (70) includes two symmetrically arranged guide rail columns (701). Linear guide rails (702) are fixedly connected to both sides of the guide rail columns (701). Slider blocks (703) are slidably connected to the linear guide rails (702). The sliders (703) located on the front and rear sides of the guide rail columns (701) are respectively fixedly connected to a front slider plate (704) and a rear slider plate (705). The upper ends of the front slider plate (704) and the rear slider plate (705) are connected by an upper fixing plate (706). The lower ends of the front slider plate (704) and the rear slider plate (705) are connected by a lower fixing plate (707). The central shaft support rod (401) is connected to the front slider plate (704). The lifting mechanism (70) is provided with a first driving mechanism (80) for driving its up and down movement.

4. A bending machine according to claim 3, characterized in that: The first drive mechanism (80) includes a first drive part (801) disposed on one side of the lifting mechanism (70). The output end of the first drive part (801) is connected to a first synchronous pulley (802). The upper end of the lifting mechanism (70) is provided with a second synchronous pulley (803). The first synchronous pulley (802) and the second synchronous pulley (803) are connected by a synchronous belt drive. The upper end of the upper fixed plate (706) is fixedly connected with a lead screw nut seat (804). A lead screw (805) is passed through the second synchronous pulley (803), the lead screw nut seat (804), and the upper fixed plate (706).

5. A bending machine according to claim 4, characterized in that: The lifting mechanism (70) is provided with a second driving mechanism (90), which drives the upper pressure roller shaft (201) to rotate around its own axis.

6. A bending machine according to claim 5, characterized in that: The second drive mechanism (90) includes a second drive unit (901) disposed on one side of the rear slider plate (705). The output end of the second drive unit (901) is connected to a third synchronous pulley (902). A fourth synchronous pulley (903) is disposed at one end of the upper pressure roller shaft (201) extending out of the rear slider plate (705). The third synchronous pulley (902) and the fourth synchronous pulley (903) are connected by a synchronous belt drive.

7. A bending machine according to claim 6, characterized in that: The frame (10) is provided with a third drive assembly (100) for driving the lower pressure roller shaft (301) to rotate around its own axis. The third drive assembly (100) includes a third drive part (1001) disposed on one side of the base plate (60). A lower rotating shaft seat (1002) is fixedly connected to the lower end of the base plate (60). The third drive part (1001) is fixedly connected to the lower rotating shaft seat (1002). The output end of the third drive part (1001) is connected to a first gear (1003). A second gear (1004) and a third gear (1005) are respectively disposed at one end of the two lower pressure roller shafts (301). The first gear (1003), the second gear (1004), and the third gear (1005) are connected by chain drive.

8. A bending machine according to claim 7, characterized in that: The power source devices for the first drive unit (801), the second drive unit (901), and the third drive unit (1001) are all servo motors.

9. A bending machine according to claim 1, characterized in that: An encoder device (110) is provided at the lower end of the lower pressure roller assembly (30).

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