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Reeling and unreeling machine tensioning device and double-arm initiative reeling and unreeling machine

A coiling and tightening technology, which is applied in the field of uncoiling of metal strips, can solve problems such as waste of raw materials, failure to apply self-locking cylinders/hydraulic cylinders, and inability to tighten, etc., to reduce manufacturing costs, make up for assembly errors, and run stable effect

Inactive Publication Date: 2014-04-23
TIANJIN SAINTEAGLE WELDING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for a horizontal unwinding / rewinding machine, it is easy to cause the material roll to fly out or the material roll to scatter due to the tension during winding / unwinding or the rotational vibration of the machine. It is impossible to restore the raw materials to their original state, so this will cause serious safety accidents or lead to serious waste of raw materials
[0008] But if the air cylinder / hydraulic cylinder with self-locking function is simply applied to the field of unwinding / rewinding machine, there will be the following problems: 1. The self-locking of air cylinder / hydraulic cylinder is only to keep the position of the action lever still, and There is no guarantee that a continuous force can be provided so that the expansion shoe has enough tension to expand the inner side of the material roll, but only to meet the expansion shoe will not retract, the distance between the expansion shoe and the inner side of the material roll is only Simple active support force rather than active expansion force, so that it is actually not tight. For example, the I-wheel retractable and unwinding machine disclosed in patent application 201010138295.0 does not use self-locking cylinder to tighten the I-wheel; 2 、If the inner diameter of the material roll is not completely uniform, and the inner diameter is slightly too small, it will cause the piston of the self-locking cylinder / hydraulic cylinder to fail to fully move in place, and the self-locking device cannot be activated. If the inner diameter is slightly too large, it will cause the self-locking cylinder / hydraulic cylinder After the piston of the hydraulic cylinder is fully in place, the self-locking device is activated, and the expansion shoe cannot tighten the inner side of the material roll, and the self-locking cylinder / hydraulic cylinder still cannot be used.
[0009] Therefore, applying self-locking cylinders / hydraulic cylinders to the field of unwinding / winding machines to avoid the impact of air leakage or liquid leakage on the safety and reliability of machine operation has always been a problem that technicians in the art are eager to solve but have not been successful. question

Method used

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  • Reeling and unreeling machine tensioning device and double-arm initiative reeling and unreeling machine
  • Reeling and unreeling machine tensioning device and double-arm initiative reeling and unreeling machine
  • Reeling and unreeling machine tensioning device and double-arm initiative reeling and unreeling machine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] see figure 1 , a double-arm active unwinding and unwinding machine, comprising a base 1 and a box body rotatably connected to the base 1, the box body includes a bottom plate 4 and two left and right vertical plates 32 affixed thereto, and the outer sides of the two vertical plates 32 Each support sleeve 26 is provided to form a symmetrical double-arm structure. A group of actuators are respectively arranged on the inner sides of the two vertical plates 32 , and each group of actuators drives the pull rods 17 that are arranged on the same side and are installed in the side support sleeves 26 . A powder metallurgy bearing for supporting the pull rod 17 is arranged in the supporting sleeve 26 . The above-mentioned actuator can be a hydraulic cylinder with a lock or an air cylinder with a lock.

[0046] The support sleeve 26 is a sleeve with a flange at one end, wherein the flange part is fastened on the vertical plate 32 of the box body. The support sleeve 26 is provid...

Embodiment 2

[0086] It is mostly the same as in Embodiment 1, except that the connection mode between the actuator cylinder and the pull rod is changed. In embodiment 1, the retraction of the pull rod is realized by extending the actuator cylinder, and in this embodiment, the retraction of the pull rod is realized by the retraction of the actuator cylinder.

[0087] See Figure 10 , taking the pull rod on the left as an example, the cylinder 33 driving the pull rod 17 is also a group of two, but the difference is that the cylinder rod protrudes toward the left side (the direction close to the outer end of the pull rod connected to it), and each cylinder The end of the cylinder rod is also connected to the end of one side arm of the V-shaped connecting plate 35 through a connecting head 36 . The difference is: the length of the connecting plate in this embodiment is shorter than that of the connecting plate in embodiment 1, and the opening direction is different from that in embodiment 1. ...

Embodiment 3

[0092] See Figure 13 , The difference from Embodiment 1 is that the base is mounted on a reciprocating platform 62, and the reciprocating movement of the platform 62 can be realized by a motor-driven ball screw mechanism, or by rolling a motor-driven gear on a rack. During the winding process, when the rotating sleeve is rotating, the base is also driven by the ball screw mechanism or the rack and pinion mechanism to perform reciprocating motion to realize cable arrangement. Generally speaking, the base does not need to reciprocate when unwinding, but if in actual use, the distance between the machine and the main machine is small, and the strip with a certain width is not suitable for swinging, the base can also be installed on the reciprocating mechanism. .

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Abstract

The invention discloses a reeling and unreeling machine tensioning device. A retracting mechanism comprises a slide bearing cavity and the outer part of the slide bearing cavity is connected with a tensioning tile through a tensioning connecting rod; the slide bearing cavity is internally provided with a bidirectional thrust bearing, a first compression spring and a limiting part; a pull rod is provided with a first shaft shoulder and the first compression spring is clamped between the limiting part and the first shaft shoulder of the pull rod; the pull rod is provided with a force applying structure for outwards pushing the bidirectional thrust bearing; an inner ring of the bidirectional thrust bearing is mounted on a first inner ring sleeve and the first inner ring sleeve can be sleeved on the pull rod in a manner of being capable of sliding outwards along the axial direction of the pull rod; the first inner ring sleeve is arranged inside an outer ring outside the bidirectional thrust bearing and is provided with a second shaft shoulder for inwards tightly ejecting the inner ring of the bidirectional thrust bearing; and the first compression spring acts elastic force on the outer end face of the first inner ring sleeve. The invention further discloses a double-arm initiative reeling and unreeling machine comprising the tensioning device. According to the reeling and unreeling machine tensioning device and the double-arm initiative reeling and unreeling machine comprising the tensioning device, tensioning force to the inner side of a steep strip coil can be kept all the time.

Description

technical field [0001] The invention belongs to the field of unwinding of metal strips, belongs to the B21C47 group of IPC classification codes, and can also be used in the field of unwinding of industries such as textiles, printing and dyeing, papermaking, plastics, etc. Dual-arm active retracting and unwinding machine. Background technique [0002] At present, with the rapid development of the flux-cored wire industry, flux-cored wire manufacturers pay more and more attention to reducing the auxiliary time of equipment operation in order to improve production efficiency. Among them, reducing the time and replacement frequency required for each replacement of steel coils is one of the important means. Therefore, in recent years, there has emerged the use of skeletonless precision rewinding steel strip coils for unwinding. This steel strip coil can directly use the steel strip itself to form a steel strip coil. When all the steel strips are released, there is nothing left o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21C47/18B21C47/30B21C47/00
Inventor 张国良李也庚
Owner TIANJIN SAINTEAGLE WELDING CO LTD