1. The utility model provides a mechanical type fibre wet winding returns yarn and tension measuring device which characterized in that: the tension scale comprises a main frame, an auxiliary shaft, a main shaft, a sliding block, a linear guide rail, a spring, an indicating needle and a tension dividing ruler;

the main frame is a door-shaped frame, two auxiliary shafts are arranged, the two auxiliary shafts are connected between two vertical rods of the main frame, and the two auxiliary shafts are respectively positioned on the front side and the rear side of the main frame; the linear guide that is located the countershaft top be provided with two, two linear guide set up respectively in the inboard of two montants of main frame, the both ends of main shaft are passed through slider and two linear guide sliding connection, the top of main shaft still pass through the spring with the top crossbeam of main frame is connected, one of them of main frame the front side of montant is provided with the tension scale, one rather than corresponding be provided with on the slider and instruct the tension value the pointer.

2. The mechanical fiber wet-wound back yarn and tension measuring device according to claim 1, wherein: two ends of the two auxiliary shafts are installed on the vertical rods of the main frame through horizontal supports.

3. The mechanical fiber wet-wound back yarn and tension measuring device according to claim 1, wherein: the two auxiliary shafts and the main shaft are arranged in parallel and are perpendicular to the vertical rod of the main frame.

4. The mechanical fiber wet-wound back yarn and tension measuring device according to claim 1, wherein: the spring is provided with two.

5. The mechanical fiber wet-wound back yarn and tension measuring device according to claim 1, wherein: and the two auxiliary shafts and the main shaft are provided with glue guide grooves.

6. The mechanical fiber wet-wound back yarn and tension measuring device according to claim 1, wherein: the horizontal central line of the pointer coincides with the axis of the main shaft.

7. The mechanical fiber wet-wound back yarn and tension measuring device according to claim 1, wherein: the bottom of two montants of main frame all is provided with a base, the base is used for installing whole device on the coiler.

Background

At present, composite materials have increasingly wide application in the fields of aerospace, ships, automobiles and the like due to the excellent properties of high strength, high specific modulus, corrosion resistance, high temperature resistance and the like. The fiber winding is the most widely applied molding technology in the composite material molding technology, and is also a mature composite material pressure container molding method at present. The wet winding method has the advantages of mature equipment and technology, low cost, high product quality and the like, and is a commonly used method in fiber winding. Tension is a key factor affecting the quality of the wound product, and too much or too little winding tension affects the quality of the wound product, so that the tension on the fiber needs to be detected during winding. The yarn nozzle moves back and forth in the winding process to cause the yarn to be loose, and if the yarn cannot be tensioned in time, the problems of yarn sliding and the like can be caused, so that the quality of wound products is influenced. Therefore, yarn return and tension measurement are important links in the fiber winding process.

At present, a plurality of yarn tension measuring instruments are available on the market, the yarn tension measuring instruments are small in size, but only have a measuring function and do not have a yarn returning function, and extra equipment is needed for controlling yarn returning. The tension controller on the market integrates yarn tensioning and tension control, but the device is large in size and high in price. There is therefore a need to develop a new type of tension measuring device that can both tension the yarn and measure the tension.

Disclosure of Invention

The invention aims to provide a mechanical fiber wet-method winding back yarn and tension measuring device, which solves the problems in the prior art and has the advantages of simple structure, small size and capability of tensioning the yarn and measuring the tension.

In order to achieve the purpose, the invention provides the following scheme:

the invention provides a mechanical fiber wet winding yarn returning and tension measuring device, which comprises a main frame, an auxiliary shaft, a main shaft, a sliding block, a linear guide rail, a spring, an indicating needle and a tension dividing ruler, wherein the main frame is provided with a main shaft and a secondary shaft;

the main frame is a door-shaped frame, two auxiliary shafts are arranged, the two auxiliary shafts are connected between two vertical rods of the main frame, and the two auxiliary shafts are respectively positioned on the front side and the rear side of the main frame; the linear guide that is located the countershaft top be provided with two, two linear guide set up respectively in the inboard of two montants of main frame, the both ends of main shaft are passed through slider and two linear guide sliding connection, the top of main shaft still pass through the spring with the top crossbeam of main frame is connected, one of them of main frame the front side of montant is provided with the tension scale, one rather than corresponding be provided with on the slider and instruct the tension value the pointer.

Preferably, two ends of the two auxiliary shafts are mounted on the vertical rods of the main frame through horizontal brackets.

Preferably, the two auxiliary shafts and the main shaft are arranged in parallel and are perpendicular to the vertical rod of the main frame.

Preferably, the springs are provided in two.

Preferably, glue guide grooves are formed in the two auxiliary shafts and the main shaft.

Preferably, the transverse center line of the pointer coincides with the axis of the spindle.

Preferably, the bottom of each of the two vertical rods of the main frame is provided with a base, and the bases are used for mounting the whole device on a winding machine.

Compared with the prior art, the invention has the following beneficial technical effects:

according to the mechanical fiber wet winding yarn returning and tension measuring device provided by the invention, the main shaft, the two auxiliary shafts and the tension graduated scale which are connected with the main frame spring are arranged on the main frame, so that the whole device has the functions of yarn returning tensioning and yarn tension measuring at the same time, and has the advantages of simple structure, small size and capability of tensioning and measuring the yarn tension.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a schematic diagram of a forward structure of a mechanical fiber wet-winding back yarn and tension measuring device according to the present invention;

FIG. 2 is a schematic side view of a mechanical fiber wet-winding back yarn and tension measuring device according to the present invention;

FIG. 3 is a schematic perspective view of a mechanical fiber wet-winding back yarn and tension measuring device according to the present invention;

in the figure: 1-a main frame; 2-a secondary shaft; 3-a main shaft; 4-a slide block; 5-linear guide rail; 6-a spring; 7-an indicator needle; 8-a tension scale; 9-a screw; 10-a screw; 11-a horizontal support; 12-a base; 13-a gasket; 14-bolt.

Detailed Description

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 only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention aims to provide a mechanical fiber wet-method winding back yarn and tension measuring device to solve the problems in the prior art.

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.

The mechanical fiber wet-winding yarn-returning and tension measuring device in this embodiment, as shown in fig. 1 to 3, includes a main frame 1, an auxiliary shaft 2, a main shaft 3, a slider 4, a linear guide 5, a spring 6, an indicator needle 7 and a tension scale 8;

wherein the main frame 1 is a door-shaped frame consisting of two vertical rods and a top cross beam;

the auxiliary shafts 2 are arranged in two numbers, the two auxiliary shafts 2 are connected between the two vertical rods of the main frame 1, and the two auxiliary shafts 2 are respectively positioned on the front side and the rear side of the main frame 1;

the two linear guide rails 5 positioned at the top of the auxiliary shaft 2 are arranged, the two linear guide rails 5 are respectively arranged on the inner sides of the two vertical rods of the main frame 1, the sliding blocks 4 are installed at the two ends of the main shaft 3 through screws 10, the two ends of the main shaft 3 are connected with the two linear guide rails 5 in a sliding mode through the sliding blocks 4, the top of the main shaft 3 is further connected with a top cross beam of the main frame 1 through springs 6, a tension graduated scale 8 is arranged on the front side of one of the vertical rods of the main frame 1, and an indicating needle 7 for indicating a tension value is arranged on one of the sliding blocks 4 corresponding to the main frame.

In this embodiment, the two auxiliary shafts 2 and the main shaft 3 are both parallel to each other and perpendicular to the vertical rod of the main frame 1, two ends of the two auxiliary shafts 2 are mounted on the vertical rod of the main frame 1 through horizontal brackets 11, wherein the horizontal brackets 11 are fixed on the vertical rod of the main frame 1 through screws 9, the end portions of the auxiliary shafts 2 are connected with the horizontal brackets 11 through bolts 14, and spacers 13 are disposed between the bolts 14 and the horizontal brackets 11.

In this embodiment, two springs 6 are provided, and the two springs 6 are symmetrically disposed about the vertical center line of the main frame 1.

In this embodiment, two glue guiding grooves are respectively arranged on the two auxiliary shafts 2 and the main shaft 3, wherein two glue guiding grooves are arranged on the main shaft 3, two glue guiding grooves are also arranged on the auxiliary shafts 2, in the winding process, the yarns are provided with resin, the yarns pass through the shaft body between the two glue guiding grooves, and redundant resin flows down through the glue guiding grooves to prevent the resin from flowing to the two ends of the shafts.

In this embodiment, the transverse center line of the pointer 7 coincides with the axis of the spindle 3, the spring 6 extends under the action of the tension of the yarn during the winding process, the pointer 7 moves downwards along with the spindle 3, and the tension scale 8 indicates the current tension value.

In this embodiment, the base 12 is disposed at the bottom of each of the two vertical rods of the main frame 1, four holes are uniformly distributed on each of the two bases 12, the device is mounted on a winding machine by using bolts during the mounting process, and the device is kept horizontal by adjusting the screwing-in depth of the bolts, so as to ensure that the main shaft 3 is perpendicular to the tension scale 8.

The mechanical fiber wet winding yarn returning and tension measuring device has the following specific working principle and process:

during winding, the yarn passes through the lower part of one auxiliary shaft 2, then passes through the upper part of the main shaft 3, and finally passes through the lower part of the other auxiliary shaft 2, and the yarn passes through the position between two glue guide grooves on the shafts. When winding, the filament nozzle starts to return after moving to the top end of the core mold, and the distance between the filament nozzle and the doffing point is shortened, so that if the yarn returning device is not arranged, the yarn is converted into a loose state from a tensioning state, and the quality of a wound product is greatly influenced. After the device is installed, at the moment when the yarn is converted into a loose state, the yarn is tensioned under the action of the tension of the spring 6, and the yarn is timely returned to prevent the yarn from being loose.

After the yarn passes through the three shafts, when the yarn is wound, the main shaft 3 moves downwards under the action of the tension of the yarn, the indicating needle 7 on the main shaft 3 also moves downwards from the zero scale, and a value is indicated on the tension graduated scale 8, wherein the value is the numerical value of the tension of the yarn at the moment. The position of the pointer 7 needs to be calibrated before each use to ensure that the pointer 7 points to the zero scale position of the tension scale 8 when there is no tension.

The principle and the implementation mode of the invention are explained by applying specific examples, and the description of the above examples is only used for helping understanding the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In summary, this summary should not be construed to limit the present invention.