CN208987853U - A kind of identical tension unwinding device - Google Patents

Abstract

A kind of identical tension unwinding device, include the reel for placing tulle volume, balancing pole, fixed roller, spring, balancing pole fulcrum and spring attachment point, it is characterized in that, the balancing pole is fixed on balancing pole fulcrum, there are two roller bearings for the balancing pole side installation, respectively the first roller bearing and the second roller bearing, first roller bearing and the second roller bearing are alternatively arranged, one end of the endpoint connecting spring of the other side of the balancing pole, the other end of spring is fixed on spring attachment point simultaneously, the fixed roller includes 3 roller bearings, it is the first fixed roller respectively, second fixed roller and third fixed roller, its interval is arranged side by side, simultaneously, first roller bearing and the second roller bearing are respectively the downside of fixed roller；It is used to put that weight is lighter when the utility model, than relatively thin cotton yarn tape or strap, has the characteristics that good buffer effect.

Description

A kind of identical tension unwinding device

Technical field

The utility model relates to mask production technical field, more particularly to a kind of identical tension unwinding device.

Background technique

High filtration mask, You Duocheng filter layer are process, and sometimes in centre plus special tissue layer, produce mask Raw material is usually web-like, in production line, needs unwinding device, during automatic production line, there is a slitting operation, equipment A regularly rhythmic pause is had in operating, that is, is walked one section of cloth, then made a short pause, for unreeling, pause it Afterwards, usually there is a inertia, have a pulling force to winding, for tissue layer, unexpected pulling force can allow tissue layer to have deformation, because The more slow this power applied to it the better, and the utility model expectation obtains one kind, motorless to provide the unwinding device of identical tension.

Utility model content

The utility model against the above deficiency, proposes a kind of identical tension unwinding device, and principle is one elastic region of design The bigger spring in domain, is slowed down in equipment running process using the elastic force of spring, the moment pulling force generated to tissue layer.

A kind of identical tension unwinding device includes reel, the balancing pole, fixed roller, spring for placing tulle volume, balance Bar fulcrum and spring attachment point, which is characterized in that the balancing pole is fixed on balancing pole fulcrum, the balancing pole side installation There are two roller bearing, respectively the first roller bearing and the second roller bearing, the first roller bearing and the second roller bearing are alternatively arranged, the balancing pole it is another One end of the endpoint connecting spring of outer side, while the other end of spring is fixed on spring attachment point, the fixed roller It is that the first fixed roller, the second fixed roller and third fixed roller, interval are arranged side by side respectively, together comprising 3 roller bearings When, first roller bearing and the second roller bearing are respectively the downside of fixed roller, the reel in the case where releasing tulle band, Tulle band, which successively bypasses, flows to the first fixed roller, the first roller bearing, the second fixed roller, the second roller bearing, third fixed roller.

Further, spring is that a root long degree is greater than 8cm spring, at spring when maximum effectively stretching, the length of spring It is greater than 16cm, spring guarantee has a valid round force-stroke.

Further, the balancing pole is rotated around balancing pole fulcrum, when balancing pole rotates to horizontality, fixed rolling Axis and the first roller bearing and the second roller bearing will not overlying contact, i.e. the first fixed roller, the second fixed roller, third fixed roller, Horizontal distance between first roller bearing, the second roller bearing and balancing pole fulcrum, it is different.

Further, the position of the first fixed roller, the second fixed roller and third fixed roller is fixed, and size is identical, The first roller bearing, the second roller bearing are also identical with the first fixed roller simultaneously.

The utility model structure is simple, and buffering effect is suitable to promote than good.

Detailed description of the invention

Fig. 1 is the identical tension unwinding device schematic diagram that the utility model embodiment proposes.

Fig. 2 is the identical tension unwinding device that the utility model embodiment proposes without strip status diagram.

Fig. 3 is the perspective view of the first roller bearing.

Fig. 4 is tension variations schematic diagram.

Specific embodiment

The utility model is further described with reference to the accompanying drawings and examples.For the above-mentioned mesh for making the utility model , feature and advantage can be more obvious and easy to understand, specific embodiment of the present utility model is done with reference to the accompanying drawing detailed Explanation.Many details are explained in the following description in order to fully understand the utility model.But the utility model It can be implemented with being much different from other way described herein, those skilled in the art can be without prejudice to the utility model Similar improvement is done in the case where intension, therefore the utility model is not limited by following public specific implementation.

The principles of the present invention design a self balancing spring buffer section, when unreeling, tulle volume by Instantaneous pulling force it is not too big, play protection winding.

Referring to Fig. 1, a kind of identical tension unwinding device, includes the reel 1 for placing tulle volume, balancing pole 2, fixed rolling Axis, spring 4, balancing pole fulcrum 5 and spring attachment point 6, balancing pole 2 are fixed on balancing pole fulcrum 5,2 side of balancing pole There are two roller bearing, respectively the first roller bearing 21 and the second roller bearing 22, the first roller bearing 21 and the second roller bearings 22 to be alternatively arranged for installation, puts down One end of the endpoint connecting spring 4 of the other side of weighing apparatus bar 2, while the other end of spring 4 is fixed on spring attachment point 6, The fixed roller includes 3 roller bearings, is the first fixed roller 31, the second fixed roller 32 and third fixed roller 33 respectively, Its interval is arranged side by side, meanwhile, the downside of first roller bearing 21 and the second roller bearing 22 respectively fixed roller, reel 1 is released Tulle band 11, tulle band 11, which is successively wound, flows to the first fixed roller 31, the first roller bearing 21, the rolling of the second fixed roller 32, second Axis 22, third fixed roller 33.

Specifically, spring 4 is that a root long degree is greater than 8cm spring, and at spring when maximum effectively stretching, the length of spring is wanted Greater than 16cm, it should be noted that the stroke of spring determines the torsional amplitude of balancing pole 2, and the elasticity of spring is better, then balances The torsional amplitude of bar 2 is bigger, and the only longer spring of length just can guarantee enough torsional amplitudes.

Specifically, balancing pole 2 is rotated around balancing pole fulcrum 5, when balancing pole 2 rotates to horizontality, fixed roller With the first roller bearing 21 and the second roller bearing 22 will not overlying contact, i.e. the first fixed roller 31, the second fixed roller 32, third are fixed Horizontal distance between roller bearing 33, the first roller bearing 21, the second roller bearing 22 and balancing pole fulcrum 5, it is different.

Specifically, the position of the first fixed roller 31, the second fixed roller 32 and third fixed roller 33 is fixed, size phase Together, while the first roller bearing, the second roller bearing are also identical with the first fixed roller, and Fig. 3 illustrates its perspective view, with certain weight Amount.

If Fig. 2 illustrates the location drawing of no tulle band 11, between the direct line y that wherein horizontal line x and balancing pole 2 are in Angle is D, because the second roller bearing 22 and the first roller bearing 21 have certain weight, the left side of balancing pole 2 is sagging, but It is that other side is tangled by spring 4, in this case, balancing pole 2 is balance, but balancing pole 2 is in any one direction Deflection is easier, and deflects complete angle, is always tended in the state for allowing balancing pole 2 to be restored to Fig. 2 displaying.

Fig. 4 illustrates tension variations figure, and wherein horizontal axis is the time, and vertical pivot is pulling force, and instantaneous, production line may be to thin Cotton yarn tape 11 has a pulling force, the forming curves n1 of this tension variations size, this pulling force is primarily used to unreel, when When not having spring, under tension, tulle band 11 needs to bear all pulling force suddenly the inertia of winding, when there is spring, although thin Cotton yarn tape 11 is actually solely subjected to spring to its tension variations, i.e. forming curves n2, i.e., the pulling force that tulle band 11 is subject to is slowly to increase , therefore it is also more preferable to its protective effect.

The implementation steps of the utility model are as follows: if Fig. 1, pulling force N are the pulling force that tulle band 11 bears that production line generates it, Due to there is spring to play buffer function, for balancing pole 2 by deflection adjustment, the instantaneous pulling force for allowing tulle band 11 to be subject to is not too big, Therefore it can protect tulle band 11 not by big damage.

The utility model is unreeled especially suitable for all kinds of interlayers in production mask, does not have a power device, therefore can be with Electricity is saved, structurally reasonable, cost of manufacture is not high, is suitble to promote.

Preferred embodiments of the present invention above described embodiment only expresses, the description thereof is more specific and detailed, But it should not be understood as limiting the scope of the patent of the utility model.It should be pointed out that for the common of this field For technical staff, without departing from the inventive concept of the premise, several deformations can also be made, improves and substitutes, these are all Belong to the protection scope of the utility model.Therefore, the scope of protection shall be subject to the appended claims for the utility model patent.

Claims (4)

1. a kind of identical tension unwinding device includes reel, the balancing pole, fixed roller, spring for placing tulle volume, balance Bar fulcrum and spring attachment point, which is characterized in that the balancing pole is fixed on balancing pole fulcrum, the balancing pole side installation There are two roller bearing, respectively the first roller bearing and the second roller bearing, the first roller bearing and the second roller bearing are alternatively arranged, the balancing pole it is another One end of the endpoint connecting spring of outer side, while the other end of spring is fixed on spring attachment point, the fixed roller It is that the first fixed roller, the second fixed roller and third fixed roller, interval are arranged side by side respectively, together comprising 3 roller bearings When, first roller bearing and the second roller bearing are respectively the downside of fixed roller, the reel in the case where releasing tulle band, Tulle band, which successively bypasses, flows to the first fixed roller, the first roller bearing, the second fixed roller, the second roller bearing, third fixed roller.

2. a kind of identical tension unwinding device according to claim 1, which is characterized in that spring is that a root long degree is greater than 8cm Spring, maximum when effectively stretching at spring, the length of spring is greater than 16cm.

3. a kind of identical tension unwinding device according to claim 1, which is characterized in that the balancing pole surrounds balancing pole branch Point rotation, when balancing pole rotates to horizontality, fixed roller and the first roller bearing and the second roller bearing will not overlying contacts, i.e., the It is horizontal between one fixed roller, the second fixed roller, third fixed roller, the first roller bearing, the second roller bearing and balancing pole fulcrum Distance, it is different.

4. a kind of identical tension unwinding device according to claim 3, which is characterized in that the first fixed roller, second are fixed The position of roller bearing and third fixed roller is fixed, and size is identical, at the same the first roller bearing, the second roller bearing also with the first fixed roller phase Together.