Plastic wave tile forming roller structure and forming machine

Abstract

This invention relates to a molding roller structure and molding machine for plastic corrugated sheets. The roller structure includes an upper roller, an upper roller bearing with a seat, two cylinders, a first bushing, and a first round nut; a lower roller, a lower roller bearing with a seat, a transmission gear set, a torque pin, a second bushing, and a second round nut. One end of the upper roller is connected to the upper roller bearing with a seat, and the other end is connected to the first bushing. The upper roller bearing with a seat is connected to the output end of one cylinder, and the first bushing is connected to the output end of the other cylinder. One end of the lower roller is connected to the lower roller bearing with a seat, and the other end is connected to the second bushing. The driven gear of the transmission gear set is mounted on the outside of the second bushing and connected to a power source. The end of the lower roller inserted into the second bushing has a strip-shaped hole, and the second bushing has an insertion hole corresponding to the strip-shaped hole. The torque pin passes through the insertion hole and the strip-shaped hole in sequence. Compared with the prior art, this invention solves the problem of uneven product thickness while maintaining maintainability.

Description

Technical Field

[0001] This invention relates to corrugated sheet forming equipment, and more particularly to a plastic corrugated sheet forming roller structure and forming machine. Background Technology

[0002] Corrugated plastic sheets are widely used in sunrooms and agricultural greenhouses. They are produced by a corrugated sheet forming machine that presses heated plastic sheets into a specified corrugated shape. Existing corrugated sheet forming machines typically use shoulder-based positioning for the forming rollers, requiring extremely high processing precision or resulting in complex structures and high manufacturing costs. Furthermore, due to various reasons, the machine frame may deform, causing the original positioning reference to shift. This is especially problematic for trapezoidal corrugated sheet products, which often have many sharp corners. Misalignment of the upper and lower or front and rear rollers can directly lead to uneven thickness, poor product quality, or even defective products, resulting in a high scrap rate and hindering energy conservation and emission reduction. Summary of the Invention

[0003] The purpose of this invention is to provide a plastic corrugated tile forming roller structure and forming machine. One end of the upper roller and the lower roller is fixed on a bearing with a seat, while the other end is movable, which allows the roller to move freely when its length changes due to thermal expansion and contraction. This solves the problem of uneven product thickness while maintaining maintainability.

[0004] The objective of this invention can be achieved through the following technical solutions:

[0005] A plastic corrugated tile forming roller structure includes:

[0006] Upper roller, upper roller bearing with seat, two cylinders, first bushing and first round nut;

[0007] Lower roller, lower roller bearing with seat, transmission gear set, torque pin, second bushing and second round nut;

[0008] One end of the upper roller is connected to the upper roller bearing seat, and the other end is connected to the first bushing inserted into it. The upper roller bearing seat is connected to the output end of one cylinder, and the first bushing is connected to the output end of another cylinder.

[0009] One end of the lower roller is connected to the lower roller bearing seat, and the other end is connected to the second bushing. The driven wheel of the transmission gear set is sleeved on the outside of the second bushing and connected to the power source. The end of the lower roller inserted into the second bushing is provided with a strip hole. The second bushing is provided with an insertion hole corresponding to the strip hole. The torque pin passes through the insertion hole and the strip hole in sequence.

[0010] The cylinder is an adjustable stroke cylinder.

[0011] The strip-shaped holes and insertion holes are provided in multiple ways.

[0012] The torque pin is threaded.

[0013] The pressure roller structure also includes a speed reducer, which is located between the transmission gear set and the power source.

[0014] The power source is an electric motor.

[0015] The length of the second bushing is more than twice that of the first bushing.

[0016] The portion of the upper roller inserted into the first bushing is at least 5% of the upper roller.

[0017] A corrugated tile forming machine includes multiple pressure roller structures as described above.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. One end of the upper and lower rollers is fixed on the bearing seat, while the other end is movable, which allows the rollers to move freely when their length changes due to thermal expansion and contraction. This solves the problem of uneven product thickness while maintaining maintainability.

[0020] 2. By using a torsion pin to achieve transmission, flexible movement can be achieved while maintaining power transmission.

[0021] 3. The lower roller power transmission adopts a gear structure, which can be easily disengaged from the geared motor, enabling quick roller changes while ensuring sufficient accuracy. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the lower pressure roller structure according to the first embodiment of the present invention;

[0023] Figure 2 This is a schematic diagram of the pressure roller structure according to the second embodiment of the present invention;

[0024] Figure 3 This is a schematic diagram of the lower roller and the second bushing in the first embodiment.

[0025] Among them: 1. Cylinder, 2. Upper roller bearing with seat, 3. Lower roller bearing with seat, 4. Upper roller, 5. Lower roller, 6. Round nut, 7. First bushing, 8. Round nut, 9. Driven wheel, 10. Round nut, 11. Second bushing, 12. Round nut, 13. Insertion hole, 14. Strip hole. Detailed Implementation

[0026] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. These embodiments are based on the technical solution of the present invention and provide detailed implementation methods and specific operating procedures. However, the scope of protection of the present invention is not limited to the following embodiments.

[0027] Example 1

[0028] A plastic corrugated tile forming roller structure, such as Figure 1 and Figure 3 As shown, it includes:

[0029] Upper roller 4, upper roller bearing 2, two cylinders 1, first bushing 7 and first round nut;

[0030] Lower roller 5, lower roller bearing 3, transmission gear set, torque pin, second bushing 11, and second round nut;

[0031] One end of the upper roller 4 is connected to the upper roller bearing 2, and the other end is connected to the first bushing 7. The upper roller bearing 2 is connected to the output end of one cylinder 1, and the first bushing 7 is connected to the output end of another cylinder 1.

[0032] One end of the lower roller 5 is connected to the lower roller bearing 3, and the other end is connected to the second bushing 11. The driven wheel 9 of the transmission gear set is sleeved on the outside of the second bushing 11 and connected to the power source. The lower roller 5 is provided with a strip hole 14 at the end inserted into the second bushing 11. The second bushing 11 is provided with a corresponding insertion hole 13. The torque pin passes through the insertion hole 13 and the strip hole 14 in sequence and can slide along the strip hole 14.

[0033] One end of the upper roller 4 and the lower roller 5 is fixed to a bearing with a mounting seat, while the other end is movable, allowing for free movement when the rollers change length due to thermal expansion and contraction. This solves the problem of uneven product thickness while maintaining maintainability. Power transmission is achieved through a torsion pin, ensuring flexible movement while maintaining power transmission.

[0034] The torque pin should be made of a workpiece with sufficient strength. In some embodiments, the torque pin is threaded to improve its own fixing firmness.

[0035] Cylinder 1 is an adjustable stroke cylinder 1, which can adjust the distance between itself and the lower roller 5 to press out trapezoidal wave products of different depths.

[0036] In this embodiment, multiple strip holes 14 and insertion holes 13 are provided to improve the power transmission effect.

[0037] The pressure roller structure also includes a speed reducer, which is located between the transmission gear set and the power source, which is a motor. The second bushing 11 is fixed by bearings to achieve rotation. The rotation of the motor drives the second bushing 11 to rotate via the speed reducer and transmission gear set, thereby driving the lower roller 5 to rotate. The lower roller 5 is driven by the speed reducer. To facilitate left and right adjustment, a gear transmission is used between the speed reducer and the lower roller 5, so that power transmission can still be maintained when the lower roller 5 is adjusted left and right.

[0038] In this embodiment, the length of the second bushing 11 is more than twice that of the first bushing 7. The portion of the upper roller 4 inserted into the first bushing 7 is at least 5% of the upper roller 4, thereby improving stability.

[0039] The upper roller 4 and the lower roller 5 constitute the forming roller, which is a multi-wave trapezoidal wave roller. The trapezoidal waves of the upper roller 4 and the lower roller 5 need to be aligned. High-temperature heat transfer oil is circulated inside the forming roller to maintain the roller surface temperature, so that the plastic sheet is always in a hot state, which is convenient for pressing and forming.

[0040] The corrugated tile forming machine obtained by applying this embodiment includes multiple pressure roller structures as described above.

[0041] The plastic sheet is gradually pressed into a curved cross-sectional shape by a heated special wave roller and a structure of 3 to 5 sets of pressure rollers, which improves the bending strength of the product. Since the wave is gradually shaped by multiple sets of pressure rollers, it is necessary to adjust the upper roller 4 and the lower roller 5 to be aligned, and the front and rear sets of rollers must also be aligned. Through a simple and effective positioning mechanism, the alignment adjustment of the rollers is convenient and simple, reducing the failure rate.

[0042] Example 2

[0043] The similarities between this embodiment and Embodiment 1 will not be repeated; only the differences will be described.

[0044] In this embodiment, there are two upper roller bearing 2 and two lower roller bearing 3. One end of the upper roller 4 is connected to one of the upper roller bearing 2 but not fixed, and the other end is connected to the other upper roller bearing 2 and fixed by round nuts 6 and 8. Similarly, one end of the lower roller 5 is connected to one of the lower roller bearing 3 but not fixed, and the other end is connected to the other lower roller bearing 3 and fixed by round nuts 10 and 12.

[0045] The above design also allows for convenient free movement of the rollers when their length changes due to thermal expansion and contraction.

Claims

1. A plastic corrugated tile forming roller structure, characterized in that, include: Upper roller, upper roller bearing with seat, two cylinders, first bushing and first round nut; Lower roller, lower roller bearing with seat, transmission gear set, torque pin, second bushing and second round nut; One end of the upper roller is connected to the upper roller bearing seat, and the other end is connected to the first bushing inserted into it. The upper roller bearing seat is connected to the output end of one cylinder, and the first bushing is connected to the output end of another cylinder. One end of the lower roller is connected to the lower roller bearing seat, and the other end is connected to the second bushing. The driven wheel of the transmission gear set is sleeved on the outside of the second bushing and connected to the power source. The end of the lower roller inserted into the second bushing is provided with a strip hole. The second bushing is provided with an insertion hole corresponding to the strip hole. The torque pin passes through the insertion hole and the strip hole in sequence.

2. The plastic corrugated tile forming roller structure according to claim 1, characterized in that, The cylinder is an adjustable stroke cylinder.

3. The plastic corrugated tile forming roller structure according to claim 1, characterized in that, The strip-shaped holes and insertion holes are provided in multiple ways.

4. The plastic corrugated tile forming roller structure according to claim 1, characterized in that, The torque pin is threaded.

5. The plastic corrugated tile forming roller structure according to claim 1, characterized in that, The pressure roller structure also includes a speed reducer, which is located between the transmission gear set and the power source.

6. The plastic corrugated tile forming roller structure according to claim 1, characterized in that, The power source is an electric motor.

7. The plastic corrugated tile forming roller structure according to claim 1, characterized in that, The length of the second bushing is more than twice that of the first bushing.

8. The plastic corrugated tile forming roller structure according to claim 1, characterized in that, The portion of the upper roller inserted into the first bushing is at least 5% of the upper roller.

9. A corrugated tile forming machine, characterized in that, It includes multiple pressure roller structures as described in any one of claims 1-8.

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