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 winding and unwinding 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. The tensioning sliding sleeve with the multiple sliding pieces slides towards the large-taper direction under the action of axial thrust, 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] This utility model relates to a tensioning mechanism, and more particularly to a novel mechanical multi-slider tensioning machine. Background Technology

[0002] In the processing and inspection of shaft parts in printing presses and blown film machines, conical plugs are often used to hold the ends of the shaft or paper core. The conical plugs commonly used in existing machines are conical, with multiple grooves or angles. This is not a big problem for low tension winding and unwinding, since low tension will not cause slippage on ordinary paper tubes. However, at high tension, the paper tube will slip, making it unusable and causing unstable winding and unwinding tension, resulting in uneven winding and a lot of waste. Utility Model Content

[0003] To overcome the aforementioned problems, this utility model provides a novel mechanical multi-slider tensioning mechanism.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is: a novel mechanical multi-sliding tensioning mechanism, comprising a power transmission shaft, a tapered bushing, a multi-sliding tensioning sleeve, a limiting end cap, an ejector spring, and a retraction spring. The tapered bushing is fixed to the power transmission shaft. The multi-sliding tensioning sleeve is slidably connected to the outer conical surface of the tapered bushing via the retraction spring. One end of the ejector spring abuts against the bottom of the tapered bushing, and the other end abuts against the bottom of the multi-sliding tensioning sleeve. The multi-sliding tensioning sleeve is composed of multiple identical tensioning sliders. The limiting end cap is fixed to the front end of the power transmission shaft.

[0005] Preferably, the multi-sliding tension sleeve has a groove, and the contraction spring is disposed in the groove.

[0006] Preferably, there are four tensioning sliders.

[0007] This invention is mainly used for winding and clamping paper rolls under varying tensions, and is designed using the principle of conical radial expansion. Under axial thrust, the multi-sliding tensioning sleeve of this invention slides towards a larger taper, causing several tensioning sliders to expand radially and simultaneously tighten the paper roll. Because of surface contact, the paper roll will not be damaged. The greater the force applied, the tighter the roll becomes, and slippage is prevented, especially under high tension. Attached Figure Description

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

[0009] Figure 1 This is a schematic diagram of the existing technology of cone plugs.

[0010] Figure 2 This is a schematic diagram of the structure of this utility model.

[0011] Figure 3 yes Figure 1 The left view.

[0012] Figure 4 This is a schematic diagram of the structure of a multi-sliding plate tensioning sleeve.

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

[0014] Figure 6 This is a schematic diagram of the structure of a retraction spring.

[0015] Figure 7 This is a schematic diagram of the tapered bushing.

[0016] Figure 8 This is a schematic diagram of the working principle of this utility model.

[0017] The labels in the attached diagram correspond to the following names: 1-Limiting end cap, 2-Conical bushing, 3-Multi-sliding tensioning sleeve, 4-Power transmission shaft, 5-Ejection spring, 6-Contraction spring, 7-Paper core, 8-Driven side cone plug, 9-Cylinder, 10-Groove. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort fall within the protection scope of the present utility model.

[0019] like Figure 1 As shown: In the existing technology, the left side of the cone plug is always in line contact with the taut paper tube. If the tension is too high, it may damage the paper tube.

[0020] like Figures 2-7 The diagram shows a novel mechanical multi-slide tensioning mechanism, comprising a power transmission shaft 4, a tapered bushing 2, a multi-slide tensioning sleeve 3, a limiting end cap 1, an ejector spring 5, and a retraction spring 6. The tapered bushing 2 is fixed to the power transmission shaft 4. The multi-slide tensioning sleeve 3 consists of four identical tensioning sliders. The retraction spring 6 is disposed within a groove 10, binding the four tensioning sliders to the outer tapered surface of the tapered bushing 2. The limiting end cap 1 is fixed to the front end of the power transmission shaft 4, restricting the multi-slide tensioning sleeve 3 to slide on the outer tapered surface of the tapered bushing 2. The ejector spring 5 has one end abutting against the bottom of the tapered bushing 2 and the other end abutting against the bottom of the multi-slide tensioning sleeve 3, ejecting the multi-slide tensioning sleeve 3 in its natural state, thus reducing the outer diameter of the multi-slide tensioning sleeve 3 for easier paper core insertion.

[0021] like Figure 8As shown: One end of the paper core 7 to be tensioned is pressed against the driven side cone plug 8, and the other end is pressed against the end face of the multi-sliding tension sleeve 3. In its natural state, the push-out spring 5 pushes the multi-sliding tension sleeve 3 forward, causing the outer diameter of the multi-sliding tension sleeve 3 to decrease, making it easier for the other end of the paper core 7 to pass through the multi-sliding tension sleeve 3. The cylinder actuates, causing the entire utility model to move to the left to a suitable position to clamp the paper core 7. When the tension is too high, the multi-sliding tension sleeve 3 will move to the right, and the push-out spring 5 will be further compressed. At this time, the outer diameter of the multi-sliding tension sleeve 3 will increase, ensuring that the multi-sliding tension sleeve 3 and the paper core 7 are always in surface contact, and the paper core 7 is not easily damaged.

Claims

1. A novel mechanical multi-slip tensioner mechanism characterized by: It comprises a power transmission shaft, a conical shaft sleeve, a multi-slip expanding 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 expanding sleeve is slidably connected with the outer conical surface of the conical shaft sleeve through the contraction spring, one end of the ejection spring is abutted against the bottom of the conical shaft sleeve and the other end is abutted against the bottom of the multi-slip expanding sleeve, the multi-slip expanding sleeve is composed of a plurality of identical expanding sliding blocks, and the limiting end cover is fixed on the front end of the power transmission shaft.

2. A novel mechanical multi-slip tensioner mechanism as claimed in claim 1, characterized in that: A groove is arranged on the multi-slip expanding sleeve, and the contraction spring is arranged in the groove.

3. A novel mechanical multi-slip tensioner mechanism as claimed in claim 1, characterized in that: The expanding sliding block is four.

Images