CN218048775U

CN218048775U - Friction traction device for prepreg tape production line

Info

Publication number: CN218048775U
Application number: CN202222586019.1U
Authority: CN
Inventors: 何海潮; 曹勇
Original assignee: Jiangsu Jwell Intelligent Manufacturing Co ltd
Current assignee: Jiangsu Jwell Intelligent Manufacturing Co ltd
Priority date: 2022-09-27
Filing date: 2022-09-27
Publication date: 2022-12-16
Anticipated expiration: 2032-09-27

Abstract

The utility model relates to a friction draw gear for preimpregnation area assembly line, preimpregnation area assembly line include a rubber coating solidification equipment, and friction draw gear includes: the first traction mechanism is adjacent to the upstream of the gluing and curing device and comprises a plurality of rotatable first traction rollers, a first transmission gear set and a first driving motor, the plurality of first traction rollers are arranged in a vertically staggered mode, and the first transmission gear set is simultaneously and mechanically coupled with the first driving motor and each first traction roller so that the first driving motor can drive each first traction roller to synchronously rotate at a first linear speed; the second traction mechanism is adjacent to the downstream of the gluing and curing device and comprises a plurality of rotatable second traction rollers, a second transmission gear set and a second driving motor, the plurality of second traction rollers are arranged in a vertically staggered mode, and the second transmission gear set is mechanically coupled with the second driving motor and each second traction roller at the same time, so that the second driving motor can drive each second traction roller to rotate at a second linear speed higher than the first linear speed.

Description

Friction traction device for prepreg tape assembly line

Technical Field

The utility model belongs to the technical field of prepreg tape manufacturing and specifically relates to a friction draw gear for prepreg tape assembly line.

Background

Prepreg tapes are compositions of a gel and continuous longitudinal fibers that are widely used in the production of various types of sheet materials. The prepreg tape assembly line comprises a gluing and curing device, a winding device for winding prepreg tapes and a plurality of traction devices for drawing longitudinal fibers or prepreg tapes. The gluing and curing device can attach glue to the longitudinal fibers and heat and cure the glue and the longitudinal fibers into a prepreg tape.

The longitudinal fibers and prepreg tapes need to maintain a certain surface tension during drawing to give the final product a better uniformity. Friction draft devices are one type of traction device that includes a plurality of rotatable draft rollers and a drive motor that drives the draft rollers. However, the driving motor of the conventional friction traction device is in transmission connection with the traction rollers through chains, the chain transmission precision is low, the chain transmission often slips, and the traction rollers are easy to generate large speed difference, so that the surface of a sheet is wrinkled or the sheet is damaged due to over-stretching, and the qualification rate of a final finished product is reduced to a certain extent.

SUMMERY OF THE UTILITY MODEL

To the defect that exists among the above-mentioned traditional friction drive mechanism, the utility model aims at providing a neotype friction draw gear that is used for the preimpregnation tape assembly line.

In order to achieve the above object, the present invention provides the following technical solutions: a friction traction device for a prepreg tape line defining a path of travel for longitudinal fibers and prepreg tape and including a glue curing device, the friction traction device comprising: a first drawing mechanism adjacent to the upstream of the glue curing device, wherein the first drawing mechanism comprises a first frame, a plurality of first drawing rollers rotatably supported on the first frame, a first transmission gear set and a first driving motor, the plurality of first drawing rollers are arranged in a staggered manner from top to bottom, the moving path sequentially passes through the first drawing rollers in a serpentine winding manner, and the first transmission gear set is simultaneously and mechanically coupled with the first driving motor and each first drawing roller so that the first driving motor can drive each first drawing roller to synchronously rotate at a first linear speed; the second traction mechanism is adjacent to the downstream of the gluing and curing device and comprises a second rack, a plurality of second traction rollers, a second transmission gear set and a second driving motor, the second traction rollers are rotatably supported on the second rack and are arranged in a vertically staggered mode, the moving path sequentially penetrates through the second traction rollers in a snake-shaped winding mode, and the second transmission gear set is mechanically coupled with the second driving motor and the second traction rollers at the same time so that the second driving motor can drive the second traction rollers to rotate at a second linear speed higher than the first linear speed.

In the above technical solution, preferably, the first drawing mechanism further includes a feeding roller rotatably supported on the first frame, the feeding roller is adjacent to the upstream of the plurality of first drawing rollers, and a roller center position of the feeding roller is lower than a roller center position of the adjacent first drawing roller.

In the above technical solution, preferably, the first traction mechanism further includes a plurality of yarn spreading rollers located downstream of the plurality of first traction rollers, and each yarn spreading roller is rotatably supported on the first frame.

In the above preferred embodiment, it is further preferred that each of the yarn unwinding rollers is located at the same horizontal level.

In the above preferred embodiment, it is further preferred that the first drawing roll has a roll diameter larger than that of the take-up roll.

In the above technical solution, preferably, the number of the second drawing rolls is greater than the number of the first drawing rolls.

In the above technical solution, preferably, the first driving motor and the second driving motor are both servo motors.

In the above technical solution, preferably, when the prepreg tape passes through the plurality of first drawing rolls along the moving path, a wrap angle formed by the prepreg tape and the first drawing rolls is not less than 120 °.

In the above technical solution, preferably, when the prepreg tape passes through the plurality of second drawing rolls along the moving path, a wrap angle formed by the prepreg tape and the second drawing rolls is not less than 100 °.

Compared with the prior art, the utility model provides a friction draw gear adopts the higher drive gear group of transmission precision to realize that driving motor and corresponding each carry over pinch rolls between the transmission is connected, guarantees to rotate with the same linear velocity between each carry over pinch rolls synchronously to this surface tension who maintains the sheet. In addition, the transmission gear is more reliable and has a lower failure rate than a chain.

Drawings

FIG. 1 is a front view of a friction draft gear provided by the present invention; wherein the figure shows a friction traction device of a prepreg tape production line;

FIG. 2 is a schematic perspective view of the first traction mechanism of FIG. 1;

FIG. 3 is a front view of the first pulling mechanism shown in FIG. 2;

FIG. 4 is a side view of the first pulling mechanism shown in FIG. 2;

FIG. 5 is a front view of the second traction mechanism shown in FIG. 1;

fig. 6 is a side view of the second traction mechanism shown in fig. 5.

The labels in the figure are:

10. a first traction mechanism; 20. a second traction mechanism; 30. a gluing and curing device;

11. a first frame; 111. a feed roll; 12. a first pull roll; 13. a first drive motor; 14. a first drive gear set; 15. a yarn spreading roller;

21. a second frame; 22. a second pull roll; 23. a second drive motor; 24. a second drive gear set;

31. a glue groove; 32. glue spreading roller; 33. the curing roll is heated.

Detailed Description

To explain the technical content, structural features, attained objects and functions of the present invention in detail, the technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, and not all embodiments. In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a detailed description of various exemplary embodiments or modes of practice of the invention. However, various exemplary embodiments may be practiced without these specific details or with one or more equivalent arrangements. Moreover, the various exemplary embodiments may be different, but are not necessarily exclusive. For example, the particular shapes, configurations and characteristics of the exemplary embodiments may be used or implemented in another exemplary embodiment without departing from the inventive concept.

In addition, in the present application, such as "under 8230; \\ 8230;," ' under 8230; "\8230;," ' under 8230; "," ' under 8230;, "\8230;," ' over ' upper "side" (for example, as in "a sidewall"), etc., thereby describing the relationship of one element to another (or other) element as illustrated in the figures. Spatially relative terms are intended to encompass different orientations of the device in use, operation, and/or manufacture in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "at 8230 \8230; below" may include both an orientation of above and below. Further, the devices may be otherwise positioned (e.g., rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In the present application, the term "upstream" or "downstream" means: an object is located upstream or downstream of another object with respect to the path of travel; the term "linear velocity" refers to the linear velocity of the outer peripheral surface of the respective roller body.

The utility model provides a friction draw gear for preimpregnation area assembly line, it can utilize frictional force to pull vertical fibre and preimpregnation area with moving downstream. In order to facilitate understanding of the technical solution of the present invention, other relevant parts in the prepreg tape production line are explained below.

As shown in fig. 1, the prepreg tape production line defines a moving path for the longitudinal fibers and the prepreg tape and includes an adhesive curing device 30 for applying adhesive to a plurality of longitudinal fibers arranged in a horizontal direction and heat-curing the same into a prepreg tape. The gluing and curing device 30 comprises a glue tank 31 for supplying glue, a glue applicator roller 32 at least partially extending into the glue tank 31, and a heat curing roller 33 located downstream of the glue applicator roller 32, and the moving path passes through the glue applicator roller 32 and the heat curing roller 33 in sequence in a serpentine winding manner.

The glue tank 31 defines an open-topped glue reservoir (not shown) into which glue is fed either manually or automatically. The glue applicator 32 contacts the glue in the glue bath and the plurality of longitudinal fibers pass through the glue bath and attach a layer of glue as they move along the peripheral surface of the glue applicator 32. Thereafter, the glue and the plurality of horizontally aligned longitudinal fibers move along the outer peripheral surface of the heat-curing roll 33. The heat-curing roll 33 has a high-temperature peripheral surface for heat-curing the contacting gel and the plurality of longitudinal fibers into a prepreg tape.

With continued reference to fig. 1, the present invention provides a friction pulling device including a first pulling mechanism 10 adjacent to an upstream side of a glue curing device 30 and a second pulling mechanism 20 adjacent to a downstream side of the glue curing device 30. A first drawing device 10 is arranged downstream of the yarn feeding device (for providing longitudinal stop, not shown in the figures) of the prepreg tape line, for feeding longitudinal fibers to the gluing and curing device 30; the second drawing device 20 serves to feed the downstream trimming device and/or winding device with prepreg tape.

Referring to fig. 2-4, the first traction mechanism 10 is a three-roller type traction mechanism, and includes a first frame 11 supported on the ground or a pedestal, three first traction rollers 12 rotatably supported on the first frame 11, a first driving motor 13 fixedly mounted on the first frame 11, a first transmission gear set 14, and a plurality of yarn unwinding rollers 15 also rotatably supported on the first frame 11.

The first chassis 11 is made of a rigid material. The front portion of the first frame 11 is provided with a feed roll 111 adjacent to the upstream of the first drawing roll 12, and the feed roll 111 extends in the left-right direction and is rotatably supported on the first frame 11. The path of travel passes in a serpentine winding fashion through the feed roll 111, the first draw rolls 12 and the spreader rolls 15. The feed roll 111 is used to adjust the position of the prepreg tape entering the friction draft, with the center of the roll being lower than the center of the adjacent first draft roll 12, to increase the wrap angle of the longitudinal fibers with the first draft roll 12, i.e., to increase the contact area therebetween.

Each first carry over pinch rolls 12 all extends along left right direction, and three first carry over pinch rolls 12 arrange and crisscross from top to bottom in proper order around to increase each first carry over pinch rolls 12 and the area of contact of preimpregnation area, thereby improve the frictional force between the two. Further, as the prepreg tape passes through each of the first drawing rolls 12 along the moving path, the longitudinal fibers form a wrap angle of not less than 120 ° with each of the first drawing rolls 12 (α 1 in fig. 3 is used to illustrate the smallest possible wrap angle).

A spreader roll 15 is positioned downstream of the first pull roll 12 and is adapted to spread the plurality of longitudinal fibers so that they enter the glue curing apparatus 30 in a horizontal alignment. Each yarn spreading roller 15 is positioned at the same height, and the roller diameter of the yarn spreading roller 15 is smaller than that of the first traction roller. The spreading roller 15 is a passive roller, i.e. the spreading roller 15 is rotated by the longitudinal fibers.

The first transmission gear set 14 is used for realizing transmission connection between the first driving motor 13 and each first drawing roller 12, so that the first driving motor 13 can synchronously drive each first drawing roller 12 to synchronously rotate at a first linear speed. Compare in traditional chain drive, the utility model provides a gear drive has higher transmission accuracy and phenomenon such as difficult emergence is skidded to guarantee that the linear velocity between each first carry over pinch rolls 12 is unanimous, avoid having the difference in speed and cause sheet surface tension to change between each carry over pinch rolls. In addition, the gear transmission is more reliable and has a smaller failure rate than the chain transmission, which improves the reliability of the first traction mechanism 10. Further, the first driving motor 13 is a servo motor to precisely control the linear velocity of each of the first drawing rolls 12.

Referring to fig. 4-5, the second traction mechanism 20 is a five-roller traction mechanism, and includes a second frame 21 supported on the ground or on the pedestal, five second traction rollers 22 rotatably supported on the second frame 21, a second driving motor 23 fixedly mounted on the second frame 21, and a second transmission gear set 24 for realizing transmission connection between the second driving motor 23 and each second traction roller 22.

The five second drawing rollers 22 are sequentially arranged in tandem and staggered up and down to form two rows, and the moving path sequentially passes through each second drawing roller 22 in a snake-shaped winding manner. Further, as the prepreg tape passes through each of the second drawing rolls 22 along the moving path, a wrap angle of not less than ° is formed between the prepreg tape and each of the second drawing rolls 22 (α 2 in fig. 5 is used to indicate the smallest possible wrap angle).

Similarly, in the second traction mechanism 20, the second transmission gear set 24 is mechanically coupled to the second driving motor 23 and each of the second traction rollers 22 at the same time, so that the second driving motor 23 can synchronously drive each of the second traction rollers 22 to rotate at the second linear speed. Further, the second driving motor 23 is a servo motor to precisely control the linear velocity of each of the second drawing rollers 22.

After the longitudinal fibers are heated by the glue curing device 30, they extend in the longitudinal direction to a certain extent, i.e. the longitudinal fibers become longer. Thus, the second linear velocity of the present friction traction device is configured to be greater than the first linear velocity to compensate for thermal expansion and contraction therein, thereby maintaining the surface tension of the prepreg tape.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration only, but that various changes and modifications may be made without departing from the spirit and scope of the invention, as defined by the appended claims, specification and equivalents thereof.

Claims

1. A friction traction device for a prepreg tape line defining a travel path for longitudinal fibers and prepreg tape and including a glue curing device, the friction traction device comprising:

a first traction mechanism adjacent to the upstream of the gluing and curing device, wherein the first traction mechanism comprises a first frame, a plurality of first traction rollers rotatably supported on the first frame, a first transmission gear set and a first driving motor, the plurality of first traction rollers are arranged in a staggered manner from top to bottom, the moving path sequentially passes through the first traction rollers in a serpentine winding manner, and the first transmission gear set is simultaneously mechanically coupled with the first driving motor and each first traction roller so that the first driving motor can drive each first traction roller to synchronously rotate at a first linear speed;

the second traction mechanism is adjacent to the downstream of the gluing and curing device and comprises a second rack, a plurality of second traction rollers, a second transmission gear set and a second driving motor, wherein the plurality of second traction rollers are rotatably supported on the second rack and are arranged in a vertically staggered mode, the moving path sequentially passes through the second traction rollers in a snake-shaped winding mode, and the second transmission gear set is simultaneously and mechanically coupled with the second driving motor and the second traction rollers so that the second driving motor can drive the second traction rollers to rotate at a second linear speed higher than the first linear speed.

2. A friction draft gear according to claim 1, wherein said first draft mechanism further includes a feed roll rotatably supported on said first frame, said feed roll being adjacent upstream of said first plurality of draft rolls and said feed roll having a center of roll position lower than a center of roll position of an adjacent said first draft roll.

3. A friction draft gear according to claim 1, wherein said first draft mechanism further comprises a plurality of spreader rolls downstream of said plurality of first draft rolls, each of said spreader rolls being rotatably supported on said first frame.

4. A friction draft gear according to claim 3, wherein each of said spreader rolls is at the same level.

5. A friction traction device as defined in claim 3 wherein the first traction roller has a larger roller diameter than the take-up roller.

6. A friction traction device according to claim 1, characterized in that the number of said second traction rollers is greater than the number of said first traction rollers.

7. A friction draft gear according to claim 1, wherein said first drive motor and said second drive motor are both servo motors.

8. A frictional drag device as defined in claim 1, wherein the pre-preg tape forms an angle of wrap with said first drag rolls of not less than 120 ° as it passes along said travel path over said first plurality of drag rolls.

9. A friction traction device according to claim 1, wherein the prepreg tape forms an angle of wrap with said second plurality of traction rollers of not less than 100 ° as it passes along said path of travel through said second plurality of traction rollers.