A thin sheet thermal stretching device
A technology of thermal stretching and sheet material, applied in the field of sheet or film hot stretching and material stretching, it can solve the problems of stretching stroke limitation, scientific research on limiting the over-stretching of sheet material, etc., to achieve a stretched state Consistent, highly designable, and space efficient
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Embodiment 1
[0023] Taking a four-axis film super-stretching device as an example, the technical solution involved in the present invention is described in detail. The structure is as follows: image 3 As shown, the working status is as attached Figure 4 .
[0024] The sample stretching system is a four-axis stretching system, including a sample stretching axis 1, a sample fixing axis 2 and two expansion axes 3, with a working length of 100 mm.
[0025] The internal space of the high temperature box 4 is L400×W200×D200mm, and has a heating function. Preset two groups of gear transmission tracks parallel to the bottom wall of the high-temperature box as the transmission mechanism 9 of the expansion shaft 3, and the distance between the two groups of tracks is 80mm. The stretching shaft 1 and the fixed shaft 2 are installed on the same wall as the transmission track.
[0026] Stretching roller 1 and fixed roller 2 are stainless steel rollers of Φ40mm; a rectangular through hole 5 of L40×...
Embodiment 2
[0033] The biaxial thermal stretching device in the same high-temperature box as in Example 1.
[0034] Starting from the free ends of the tensile shaft 1 and the fixed shaft 2, a fork-shaped through groove 10 of L35×H2mm is opened in the center along the direction of axial extension (the structure is as attached figure 2 shown), the rest of the parameters are the same as in Example 1, which are respectively driven by two 2401HS42DX stepper motors with opposite rotation directions to obtain a biaxial thermal stretching device.
[0035] When in use, adjust the temperature of the high-temperature box 4 to the process temperature, and pass the L420×W30×D1.5mm strip-shaped ultra-high molecular weight polyethylene sheet sample 11 through the fork-shaped through groove 10 of the stretching shaft 1 and the fixed shaft 2 respectively, and rotate Stretch axis 1 and fix axis 2 until the sample is tensioned, and carry out super stretching of the sample, at 140 oC , Stretch 15r under th...
Embodiment 3
[0037] A triaxial thermal stretching device based on Example 2.
[0038] The stretching system is installed on one side in the width direction, 20mm away from the wall of the high-temperature box. The stretching shaft 1 and the fixed shaft 2 are installed between the stretching shaft 1 and the fixed shaft 2. A nylon shaft with a smooth surface is installed as the extension shaft 3, three shafts Collinear; All the other parameters are the same as in Embodiment 2.
[0039] Taking W30×D 0.5mm ultra-high molecular weight polypropylene thin super-fit stretching as an example to illustrate the use of the device. Adjust the temperature of the high-temperature box 4 to the process temperature, fix the two ends of the L420×W30×D0.5mm ultra-high molecular weight polypropylene sheet sample 11 respectively in the fork-shaped through groove 10 of the stretching shaft 1 and the fixed shaft 2, rotate and stretch Axis 1 and fixed axis 2 are tensioned to the sample; start the driving motor of...
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Abstract
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