CN217458315U

CN217458315U - Tensioning mechanism and equipment

Info

Publication number: CN217458315U
Application number: CN202221012299.9U
Authority: CN
Inventors: 吴汉斯
Original assignee: Xiamen Kaicheng Precision Machinery Co ltd
Current assignee: Xiamen Kaicheng Precision Machinery Co ltd
Priority date: 2022-04-27
Filing date: 2022-04-27
Publication date: 2022-09-20
Anticipated expiration: 2032-04-27

Abstract

The utility model relates to the field of coiled material receiving and releasing materials, in particular to a tensioning mechanism and a device thereof, wherein the tensioning mechanism comprises a rotary lug which is sleeved on a rotary shaft and is synchronously and rotationally connected with the rotary shaft; the plurality of tensioning blocks are distributed on the circumferential side surface of the rotating lug in a surrounding manner, and can move in the radial direction; the rolling shafts/balls are positioned between the rotating lug and the tensioning block, and each rolling shaft/ball is abutted against the first contact surface of the rotating lug and the second contact surface of the tensioning block; the limiting assembly is used for limiting the radial movement distance of the tensioning block; from the perspective of axial projection of the rotating shaft, the distance from the contact point of the rolling shaft/ball and the first contact surface to the axis of the rotating shaft is changed by rotating the rotating lug, so that the tensioning block moves in the radial direction. The utility model provides a tight mechanism rises, the dismouting of the coiled material wheel of being convenient for, whole tight mechanism that rises simple structure moreover easily processes.

Description

Tensioning mechanism and equipment

Technical Field

The utility model relates to a coiled material is received and releases material field, in particular to tight mechanism and equipment rise.

Background

The general use of blowing axle of traditional coiled material is the inflatable axle, utilizes to fill the gas promptly and carries out expansion and contraction, but the inflatable axle exists the structure insecure, and the expansion or shrink precision is low, and makes complicacy, high in production cost's problem.

For solving above-mentioned problem, the patent document that bulletin number is CN213445623U (the publication date is 2021 year 6 month 15 days) discloses a tight mechanism that rises that is used for laminator coiled material receipts release axle, and it includes the fixed disk, it is connected with the screw rod to rotate on one side central point of fixed disk to put, the other end rotation of screw rod is connected with the regulating spindle, the outside of regulating spindle is rotated the cover and is equipped with the positioning disk, the outside sliding sleeve of positioning disk is equipped with the gag lever post that four rings were arranged, four the one end of gag lever post all with one side fixed connection of fixed disk, be provided with two sections screw threads that the symmetry set up on the screw rod, and the equal threaded connection in the outside of two sections screw threads of symmetry setting has the adjustment disk, and four gag lever posts run through two adjustment disks respectively and with adjustment disk sliding connection, one side fixed mounting of adjustment disk has four fixed blocks.

The tensioning mechanism can overcome the problem that the air expansion shaft is unstable in structure, but the structure is still complex and needs to be further improved.

SUMMERY OF THE UTILITY MODEL

For solving the problems that the tensioning mechanism in the prior art has a complex structure and high manufacturing cost, the utility model provides a tensioning mechanism, which comprises

The rotating lug is sleeved on the rotating shaft and synchronously and rotatably connected with the rotating shaft;

the plurality of tensioning blocks are distributed on the circumferential side surface of the rotating lug in a surrounding manner, and can move in the radial direction;

the rolling shafts/balls are positioned between the rotating lug and the tensioning block, and each rolling shaft/ball is abutted against the first contact surface of the rotating lug and the second contact surface of the tensioning block;

the limiting assembly is used for limiting the radial movement distance of the tensioning block;

and viewed from the axial projection angle of the rotating shaft, the rotating lug is rotated to change the distance from the contact point of the rolling shaft/ball and the first contact surface to the axis of the rotating shaft, so that the tensioning block moves radially.

In an embodiment, the first contact surface is a plane, and the second contact surface is an arc-shaped surface which is concave inwards relative to the tensioning block.

In an embodiment, the second contact surface is an arc surface, and when viewed from the axial projection of the rotating shaft, the center of a circle where the arc is located coincides with the axis of the rotating shaft.

In an embodiment, the first contact surface is an arc-shaped surface that is concave inward relative to the rotation protrusion, and the second contact surface is an arc-shaped surface that is concave inward relative to the tensioning block.

In an embodiment, two adjacent first contact surfaces on the rotating projection are also in transitional connection through arc surfaces, and arcs where all the arc surfaces are located on the same circle.

In one embodiment, the number of the first contact surfaces and the number of the tensioning blocks are equal, and the number ranges from 2 to 9.

In one embodiment, the tensioning block is in a fan ring shape.

In one embodiment, two adjacent tensioning blocks are arranged at intervals.

In one embodiment, the limiting component includes a limiting groove/a limiting hole and a limiting post slidably disposed in the limiting groove/the limiting hole.

The utility model also provides an equipment adopts as above wantonly the tight mechanism that rises, the equipment that the specially adapted possesses the receipts blowing function of coiled material, like the film pressing machine, tear film machine etc. can rise tightly fixedly through this tight mechanism that rises to the receipts material wheel or the blowing wheel of coiled material, and the dismouting of being convenient for.

Based on the above, compare with prior art, the utility model provides a tension mechanism is through rotating rotatory lug makes tight piece radial movement that rises with the distance that changes roller bearing/ball rather than the point of contact to the center of rotation to the material wheel that the cover was located on the tight piece that rises realizes rising and tightly function, and when rotatory lug stall, the tight piece that rises disappears to the material wheel function that rises, the dismouting of the material wheel of being convenient for, whole tension mechanism simple structure easily processes moreover.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts; in the following description, the drawings are illustrated in a schematic view, and the drawings are not intended to limit the present invention.

Fig. 1 is an axial projection schematic view of the tensioning mechanism provided by the present invention in a rotating state;

FIG. 2 is an axial projection view of a belt wheel of the tensioning mechanism shown in FIG. 1;

fig. 3 is an axial projection schematic view of the tension mechanism provided by the present invention in a static state;

FIG. 4 is an axial projection view of the belt wheel of the tensioning mechanism shown in FIG. 3;

FIG. 5 is a schematic view of the first contact surface being an arc-shaped surface with an arc shape concave inwards;

FIG. 6 is a schematic view of a second contact surface consisting of two intersecting planes;

FIG. 7 is a schematic view of a second contact surface consisting of 3 arcuate surfaces;

fig. 8 is an orthographic view of the film tearing machine provided by the present invention;

fig. 9 is a perspective view of the film tearing machine provided by the utility model.

Reference numerals:

301 film tearing rack	330 material receiving wheel	310 rubber roller
			320 blowing wheel	700 tensioning mechanism	340 guide wheel
350 adhesive tape	721 first contact surface	710 rotating shaft
			720 rotating lug	740 Rollers/balls	730 expansion block
731 second contact surface	753 fixing plate	751 position limiting groove/hole
			752 limit column

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention; the technical features designed in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other; based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that all terms (including technical terms and scientific terms) used in the present invention have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs, and cannot be construed as limiting the present invention; it will be further understood that terms, as used herein, should be interpreted as having a meaning that is consistent with their meaning in the context of this specification and the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

Referring to fig. 1 to 4, the present invention provides an embodiment of a tensioning mechanism, which includes a rotating protrusion 720 for connecting with a driving shaft of a driving device, which is sleeved on a rotating shaft 710 of the driving device and fixedly connected with the rotating shaft 710, so as to rotate synchronously with the rotating shaft 710;

the circumferential side surface of the rotating lug 720 is provided with a plurality of tensioning blocks 730 in a surrounding manner, the tensioning blocks 730 can move along the radial direction, and the distance of the radial movement of the tensioning blocks 730 is limited by the limiting component; specifically, the limiting assembly comprises a limiting groove/limiting hole 751 and a limiting column 752 slidably disposed in the limiting groove/limiting hole 751, as shown in fig. 1, the limiting groove/limiting hole 751 is disposed on the tension block 730, and the limiting column 752 is fixed on the fixing plate 753; similarly, a person skilled in the art can also set the limiting slot/limiting hole 751 on the fixing plate 753 according to actual needs, the limiting column 752 is fixed on the tensioning block 730, and the limiting column 752 may be a bolt.

A roller/ball 740 is further arranged between each tension block 730 and the rotating lug 720, and each roller/ball 740 is abutted against the first contact surface 721 of the rotating lug 720 and the second contact surface 731 of the tension block 730;

referring to fig. 1 and 3, the circumferential side of the rotation protrusion 720 is not uniformly circular when viewed from the axial projection of the rotation shaft 710, and the rotation of the rotation protrusion 720 inevitably changes the distance from the point where the roller/ball 740 contacts the first contact surface 721 to the axis of the rotation shaft 710, which is hereinafter referred to by the letter "d", since the rotation protrusion 720 abuts against the tension block 730 via the roller/ball 740.

As shown in fig. 2, when the rotating protrusion 720 is driven by the motor to rotate, the increase of d inevitably pushes the tension block 730 to move outwards, so as to perform a tension fixing function on the discharging wheel 320 sleeved on the tension block 730 and drive the discharging wheel 320 to rotate synchronously;

as shown in fig. 4, when the rotation protrusion 720 is not driven by an external force, the roller/ball 740 naturally returns to the initial position, i.e. d is decreased, the tension block 730 needs to move inward to abut against the roller/ball 740, and the tension fixing function on the discharging wheel 320 cannot be performed, so as to facilitate the dismounting of the discharging wheel 320 or the receiving wheel 330.

And because of the limiting function of the limiting component, the moving range of the tension block 730 is limited, and no matter how the rotation bump 720 rotates, each roller/ball 740 can only move within the range of the first contact surface 721 where it is located, so as to avoid dislocation, thereby ensuring that each tension block 730 is abutted against the rotation bump 720 through the roller/ball 740.

The first contact surface 721 and the second contact surface 731 include at least, but are not limited to, the following four forms:

referring to fig. 1 to 4, the first contact surface 721 is a plane, and the second contact surface 731 is an arc-shaped surface that is concave inward relative to the tensioning block 730.

Preferably, the second contact surface 731 is an arc surface, and when viewed from the axial projection of the rotating shaft 710, the center of the circle where the arc is located coincides with the axis of the rotating shaft.

Referring to fig. 5, the first contact surface 721 is an arc-shaped surface that is concave inward relative to the rotation protrusion 720, and the second contact surface 731 is an arc-shaped surface that is concave inward relative to the tightening block 730.

Referring to fig. 6, the first contact surface 721 is a plane, and the second contact surface 731 is composed of at least two intersecting planes.

Referring to fig. 7, the first contact surface 721 is a plane surface, and the second contact surface 731 is composed of at least two arc surfaces.

For the same reason, the first contact surface 721 of the third and fourth embodiments may also be an arc surface with an arc shape concave inwards relative to the rotation protrusion 720. A person skilled in the art can adapt the first contact surface and the second contact surface according to the design concepts of the above-listed examples.

In an embodiment, two adjacent first contact surfaces 721 on the rotating protrusion 720 are further connected by an arc surface, and the arcs of all the arc surfaces are located on the same circle.

Referring to fig. 1 to 4, when the first contact surfaces 721 are planar, two adjacent first contact surfaces 721 on the rotating protrusion 720 are also in transition connection through arc surfaces, and arcs where all the arc surfaces are located on the same circle, the rotating protrusion 720 of the structure can be made of a cylindrical member through a cutting or milling process, and is easy to process.

Preferably, the number of the first contact surfaces 721 and the number of the tension blocks 730 are both 2 to 9, and those skilled in the art can determine the specific number of the first contact surfaces 721 and the tension blocks 730 according to the size of the actual structure. As shown in fig. 1 to 4, 3 first contact surfaces 721 and 3 tensioning blocks 730 are provided, the 3 first contact surfaces 721 are uniformly provided on the rotating protrusion 720, and the 3 tensioning blocks 730 are uniformly wound around the circumferential side of the rotating protrusion 720, so as to ensure the stability of the rotation of the subsequent material wheel.

In an embodiment, as shown in fig. 7 to 9, the tensioning block 730 is in a fan-ring shape, that is, a contact surface of the tensioning block 730 and the material wheel is also a circular arc surface, so as to further increase a contact surface of the tensioning block 730 and the material wheel, thereby enhancing a tensioning effect of the tensioning block 730 on the material wheel.

In an embodiment, two adjacent tension blocks 730 are spaced apart from each other, so that a gap is left between two adjacent tension blocks 730 without contacting each other, thereby preventing interference or obstruction to respective radial movement.

The utility model also provides a device adopts as above wantonly the tight mechanism that rises, generally be used for the receipts blowing of coiled material, if tear film machine, film pressing machine etc..

The following examples of the application of the tensioning mechanism in the film tearing machine are listed, specifically as follows:

referring to fig. 8 and 9, the film tearing machine comprises a film tearing frame 301, a rubber roller 310 is fixed on the film tearing frame 301 through a linear driving device, a rubber belt 350 is attached to the rubber roller 310 and used for adhering a film on a panel, and the film is torn off from the panel through relative movement between the panel and the rubber roller 310.

The film tearing frame 301 is further fixed with a discharging wheel 320 for outputting the adhesive tape 350, a receiving wheel 330 for recovering the adhesive tape 350, and a plurality of guide wheels 340 for changing the trend of the adhesive tape 350, so as to ensure that the adhesive tape 350 attached to the adhesive roll 310 can be updated in time, and maintain strong viscosity constantly, so that the film tearing process can be smoothly performed.

The discharging wheel 320 is connected with the rotating shaft 710 through the tensioning mechanism and synchronously rotates, and the transmission process of the adhesive tape 350 is as follows:

the motors connected with the receiving wheel 330 and the discharging wheel 320 respectively output driving forces with opposite rotation directions, and at the moment, the tensioning block 730 plays a tensioning and fixing role on the discharging wheel 320, so that the tensioning wheel 730 and the rotating block 720 are relatively static and rotate synchronously;

by setting the torque of the motor of the material receiving wheel 330 to be larger than the torque of the motor of the material discharging wheel 320, the pulling force of the material receiving wheel 330 on the adhesive tape 350 is larger than the pulling force of the material discharging wheel 320 on the adhesive tape 350, so that the material discharging wheel 320 and the material receiving wheel 330 are forced to rotate in the same direction, namely the actual rotation direction of the output shaft of the motor connected with the material discharging wheel 320 is opposite to the rotation driven by the motor.

Thereby realizing the process that the adhesive tape 350 is output from the discharging wheel 320 and wound and recovered by the receiving wheel 330.

To sum up, compared with the prior art, the utility model provides a tight mechanism rises through rotating rotatory lug makes tight piece radial movement that rises with the distance of changing the point of roller bearing ball rather than contact to the center of rotation to locate the tight pulley of rising on the tight piece of rising to the cover and realize rising and tightly establish the function, when rotatory lug stall, the tight piece that rises disappears to the tight function of pulley rise, the dismouting of the pulley of being convenient for, whole tight mechanism that rises simple structure moreover easily processes.

In addition, it will be appreciated by those skilled in the art that although a number of problems exist in the prior art, each embodiment or aspect of the present invention may be improved only in one or a few aspects, without necessarily simultaneously solving all the technical problems listed in the prior art or in the background. It will be understood by those skilled in the art that nothing in a claim should be taken as a limitation on that claim.

Although terms such as a film tearing frame, a rubber roller, a material discharging wheel, a material receiving wheel, a guide wheel, a rubber belt, a tensioning mechanism, a rotating shaft, a rotating lug, a contact surface, a tensioning block, a roller/ball, a limiting groove/limiting hole, a limiting column, a fixing plate and the like are used more often herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention; the terms "first," "second," and the like in the description and in the claims, and in the drawings, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. A tensioning mechanism is characterized in that: comprises that

The rotating lug (720) is sleeved on the rotating shaft (710) and is synchronously and rotatably connected with the rotating shaft (710);

the plurality of tensioning blocks (730) are distributed on the circumferential side surface of the rotating lug (720) in a surrounding manner, and the plurality of tensioning blocks (730) can move in the radial direction;

the rolling shafts/rolling balls (740) are positioned between the rotating lug (720) and the tensioning block (730), and each rolling shaft/rolling ball (740) is abutted against the first contact surface (721) of the rotating lug (720) and the second contact surface (731) of the tensioning block;

the limiting assembly is used for limiting the radial movement distance of the tensioning block (730);

when viewed from the axial projection of the rotating shaft (710), the rotating lug (720) is rotated to change the distance from the contact point of the roller/ball (740) and the first contact surface (721) to the axis of the rotating shaft (710), so that the tensioning block (730) moves radially.

2. The tensioning mechanism according to claim 1, wherein: the first contact surface (721) is a plane, and the second contact surface (731) is an arc-shaped surface which is arc-shaped and is inwards concave relative to the tensioning block (730).

3. The tensioning mechanism according to claim 2, wherein: the second contact surface (731) is an arc surface, and the center of a circle where the arc is located is overlapped with the axis of the rotating shaft when viewed from the axial projection angle of the rotating shaft (710).

4. The tensioning mechanism according to claim 1, wherein: the first contact surface (721) is an arc-shaped surface, the arc of which is inwards concave relative to the rotating bump (720), and the second contact surface (731) is an arc-shaped surface, the arc of which is inwards concave relative to the tensioning block (730).

5. The tensioning mechanism according to claim 1, wherein: two adjacent first contact surfaces (721) on the rotating lug (720) are in transitional connection through arc surfaces, and arcs where all the arc surfaces are located on the same circle.

6. The tensioning mechanism according to claim 1, wherein: the number of the first contact surfaces (721) and the number of the tensioning blocks (730) are equal, and the number ranges from 2 to 9.

7. The tensioning mechanism according to claim 1, wherein: the tensioning block (730) is in a fan ring shape.

8. The tensioning mechanism according to claim 1, 3 or 4, wherein: the two adjacent tensioning blocks (730) are arranged at intervals.

9. The tensioning mechanism according to claim 1, wherein: the limiting assembly comprises a limiting groove/limiting hole (751) and a limiting column (752) which is arranged in the limiting groove/limiting hole (751) in a sliding mode.

10. An apparatus, characterized by: the tensioning mechanism according to any one of claims 1 to 9 is adopted.