Novel mechanical multi-slip-sheet tensioning mechanism

Abstract

A novel mechanical multi-slip-sheet tensioning mechanism comprises a power transmission shaft, a conical shaft sleeve, a multi-slip-sheet tensioning sliding sleeve, a limiting end cover, an ejection spring and a contraction spring. The conical shaft sleeve is fixed on the power transmission shaft, the multi-slip-sheet tensioning sliding sleeve is slidably connected with the outer conical surface of the conical shaft sleeve through the contraction spring, one end of the ejection spring clamp abuts against the bottom of the conical shaft sleeve, and the other end of the ejection spring clamp abuts against the bottom of the multi-slip-sheet tensioning sliding sleeve. The multi-slip-sheet tensioning sliding sleeve is composed of a plurality of same tensioning sliding blocks. The limiting end cover is fixed to the front end of the power transmission shaft. The device is mainly used for winding, unwinding and clamping a material roll paper tube under large and small tension, and is designed according to the conical radial expansion principle. Under the action of axial thrust, the tensioning sliding sleeve with the multiple sliding pieces slides in the large-taper direction, the multiple tensioning sliding blocks can expand in the radial direction, meanwhile, a material roll paper tube is tensioned, due to surface contact, the material roll paper tube cannot be damaged, the larger jacking force is, the tighter the material roll paper tube is expanded, and particularly, the material roll paper tube cannot slip under large tension.

Description

Technical Field

[0001] The invention relates to a tensioning mechanism, in particular to a novel mechanical multi-slide tensioner. Background Art

[0002] When processing and testing shaft parts in printing machines and film blowing machines, cone plugs are often used to support the two ends of the shaft or paper core. The cone plugs commonly used in existing machines are all conical, with either multiple grooves or multiple angles. This is not a big problem for low tension winding and unwinding, after all, low tension will not cause ordinary paper tubes to slip, but high tension will cause the paper tube to slip, making it impossible to reuse the paper tube, and will also cause unstable winding and unwinding tension, resulting in uneven winding and a lot of waste. Summary of the invention

[0003] In order to overcome the above-mentioned problems, the present invention provides a novel mechanical multi-slide tensioning mechanism.

[0004] To achieve the above purpose, the technical solution adopted by the present invention is: a new type of mechanical multi-slide tensioning mechanism, including a power transmission shaft, a conical sleeve, a multi-slide tensioning sleeve, a limit end cover, an ejection spring and a contraction spring. The conical sleeve is fixed on the power transmission shaft, and the multi-slide tensioning sleeve is slidably connected with the outer conical surface of the conical sleeve through the contraction spring. One end of the ejection spring card abuts against the bottom of the conical sleeve, and the other end abuts against the bottom of the multi-slide tensioning sleeve. The multi-slide tensioning sleeve is composed of a plurality of identical tensioning sliders. The limit end cover is fixed to the front end of the power transmission shaft.

[0005] Preferably, the multi-slide tensioning sleeve is provided with a groove, and the contraction spring is arranged in the groove.

[0006] Preferably, there are four tensioning sliders.

[0007] The invention is mainly used for reeling and unreeling the paper roll under large and small tensions, and is designed based on the principle of conical radial expansion. Under the action of axial thrust, the multi-slide tensioning sleeve of the invention slides in the direction of large taper, and several tensioning sliders will expand radially, and at the same time, the paper roll tube will be tightened. Because of the surface contact, the paper roll tube will not be damaged. The greater the top force, the tighter it expands, especially under large tension, it will not slip. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0009] Figure 1 It is a structural schematic diagram of cone plugging in the prior art.

[0010] Figure 2 It is a structural schematic diagram of the present invention.

[0011] Figure 3 yes Figure 1 Left view of .

[0012] Figure 4 It is a structural schematic diagram of a multi-slide tensioning sleeve.

[0013] Figure 5 It is a structural schematic diagram of the tensioning slider.

[0014] Figure 6 It is a schematic diagram of the structure of the contraction spring.

[0015] Figure 7 It is a structural diagram of a tapered sleeve.

[0016] Figure 8 It is a working principle diagram of the present invention.

[0017] The names corresponding to the marks in the attached drawings are: 1-limiting end cover, 2-conical sleeve, 3-multi-slide tension sleeve, 4-power transmission shaft, 5-ejection spring, 6-contraction spring, 7-paper core, 8-driven side cone plug, 9-cylinder, and 10-groove. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work shall fall within the scope of protection of the present invention.

[0019] like Figure 1 As shown: the left side of the cone plug in the prior art is always in line contact with the tightened paper tube. If the tension is too large, the paper tube may be damaged.

[0020] like Figure 2-Figure 7 As shown: a new type of mechanical multi-slide tensioning mechanism, including a power transmission shaft 4, a tapered sleeve 2, a multi-slide tensioning sleeve 3, a limit end cover 1, an ejection spring 5 and a contraction spring 6. The tapered sleeve 2 is fixed on the power transmission shaft 4, and the multi-slide tensioning sleeve 3 is composed of 4 identical tensioning sliders. The contraction spring 6 is arranged in the groove 10, and the 4 tensioning sliders are bound to the outer conical surface of the tapered sleeve 2. The limit end cover 1 is fixed to the front end of the power transmission shaft 4, and the multi-slide tensioning sleeve 3 is limited to slide on the outer conical surface of the tapered sleeve 2. The ejection spring 5 has one end against the bottom of the tapered sleeve 2 and the other end against the bottom of the multi-slide tensioning sleeve 3, and ejects the multi-slide tensioning sleeve 3 in a natural state, so that the outer diameter of the multi-slide tensioning sleeve 3 is reduced, which is convenient for inserting the paper core.

[0021] like Figure 8As shown: one end of the paper core 7 to be tightened is pressed against the driven side cone plug 8, and the other end is pressed against the end surface of the multi-slide tightening sleeve 3. In the natural state, the ejection spring 5 pushes the multi-slide tightening sleeve 3 forward, so that the outer diameter of the multi-slide tightening sleeve 3 is reduced, which facilitates the other end of the paper core 7 to penetrate the multi-slide tightening sleeve 3. The cylinder is actuated to drive the whole invention to move to the left to a suitable position to clamp the paper core 7. When the tension is too large, the multi-slide tightening sleeve 3 will move to the right, and the ejection spring 5 will be further compressed. At this time, the outer diameter of the multi-slide tightening sleeve 3 will become larger, ensuring that the multi-slide tightening sleeve 3 is always in surface contact with the paper core 7, and the paper core 7 is not easily damaged.

Claims

1. A new type of mechanical multi-slide tensioning mechanism, characterized by: It includes a power transmission shaft, a tapered sleeve, a multi-slide tension sleeve, a limit end cover, an ejection spring and a contraction spring; the tapered sleeve is fixed on the power transmission shaft, the multi-slide tension sleeve is slidably connected to the outer conical surface of the tapered sleeve through the contraction spring, one end of the ejection spring is against the bottom of the tapered sleeve, and the other end is against the bottom of the multi-slide tension sleeve; the multi-slide tension sleeve is composed of a plurality of identical tension sliders; the limit end cover is fixed to the front end of the power transmission shaft.

2. A novel mechanical multi-slide tensioning mechanism as claimed in claim 1, characterized in that: The multi-slide tensioning sleeve is provided with a groove, and the contraction spring is arranged in the groove.

3. A novel mechanical multi-slide tensioning mechanism as claimed in claim 1, characterized in that: There are four tensioning sliders.

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