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Double arm-passive unreeling machine

An unwinder, double-arm technology, applied in the field of double-arm passive unwinder, can solve the problems of waste of raw materials, unable to use self-locking cylinder/hydraulic cylinder, unable to expand and tighten, etc., to reduce manufacturing costs, make up for assembly errors, Stable running 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 unwinding / rewinding machine field, there will be the following problems: 1. The self-locking of the 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 expansion force to expand the inner side of the material roll, but the expansion shoe will not retract only if the expansion shoe is satisfied, and the distance between the expansion shoe and the inner side of the material roll is only Simple passive support force rather than active expansion force, so 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 be unable to fully move in place, and the self-locking device cannot be activated. If the inner diameter is slightly larger, 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 is still not applicable
[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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  • Double arm-passive unreeling machine
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  • Double arm-passive unreeling machine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] see figure 1 , a dual-arm passive unwinding machine, comprising a base 1 and a box body rotatably connected to the base 1, the box body includes a base plate 4 and two left and right vertical plates 32 affixed thereto, and the outer sides of the two vertical plates 32 are respectively A 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.

[0038] 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 provided ...

Embodiment 2

[0077] 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.

[0078] 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

[0083] See Figure 13 , still taking the left half as an example, compared with Embodiment 1, the disc spring and the disc spring sleeve structure in the sliding bearing chamber 13 are cancelled, and the two-way thrust bearing is directly installed on the pull rod, and the outer end of the pull rod is provided with The third shaft shoulder 52, the inner side of the third shaft shoulder 52 is against the inner ring of the bidirectional thrust bearing 20, and the other side of the inner ring is supported by the first inner ring sleeve 51, and the first inner ring sleeve 51 is tightened by screws. Be fixed on the pull rod 17. The sliding bearing chamber 13 is no longer inside the rotating sleeve during expansion and contraction, but is directly installed outside the rotating sleeve, and directly drives the sliding bearing chamber to reciprocate when the actuating cylinder rod moves, without transmitting force through the disc spring.

[0084] In the case of the same length of th...

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Abstract

The invention discloses a double arm-passive unreeling machine. The supporting and shrinking mechanism of the unreeling machine comprises sliding bearing chambers; externals of the sliding bearing chambers are connected with tension tiles through tension connection bars; bidirectional thrust bearings, first compression springs and spacing parts which are sleeved on pull bars are sequentially arranged in the sliding bearing chambers from inner ends to outer ends, the pull bars are provided with first shaft shoulders, the first compression springs are clamped between the spacing parts and the first shaft shoulders of the pull bars, and the pull bars are provided with force application structures for outwardly pushing the bidirectional thrust bearings; inner rings of the bidirectional thrust bearings are arranged on first inner ring sleeve cylinders, the first inner ring sleeve cylinders which are sleeved on the pull bars can outwardly slide along the axial directions of the pull bars, the first inner ring cylinders which are arranged in outer rings of the bidirectional thrust bearings are provided with second shaft shoulders used for inwardly and tightly supporting the inner rings of the bidirectional thrust bearings, and the first compression springs apply elastic force on the outer end surfaces of the first inner ring sleeve cylinders. The machine has the advantages of stable and reliable operation, convenient operation and manufacturing cost reduction.

Description

technical field [0001] The invention belongs to the unwinding field of metal strips, belongs to the B21C47 group of the IPC classification number, and can also be used in the unwinding fields of textile, printing and dyeing, papermaking, plastics and other industries, and particularly relates to a dual-arm passive 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 not...

Claims

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Application Information

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