CN115831611B - Film roll wrapping device - Google Patents

Abstract

The invention provides a film roll wrapping device which comprises a winder body and a film receiving mechanism. The winder body comprises a winding shaft and a film transmission mechanism. The film conveying mechanism conveys the metallized film to a winding shaft for winding. The film connecting mechanism comprises a pressing roller and a film feeding mechanism. The pressure roller can move along the radius direction of the winding shaft, so that when the pressure roller is abutted against the film roll, the pressure roller is pressed at the joint of the metallized film and the film roll. One end of the film feeding mechanism is connected with a light film. The film feeding mechanism conveys the end head of the optical film to the joint of the film roll and the metallized film and is positioned between the film roll and the metallized film. The film roll wrapping apparatus can wind the optical film behind the metallized film by the film feeding mechanism. The cost is greatly reduced by adopting the optical film for sealing, the effect of sealing by using the optical film is better than that of a metallized film, and the sealing quality of the core is ensured. Meanwhile, the metal layer of the original metallized film is not required to be removed by the winding machine, so that the working procedures are reduced.

Description

A film roll wrapping device

technical field

The invention relates to the technical field of capacitor production equipment, in particular to a film roll coating device.

Background technique

The core component of a film capacitor is the core. The core is formed by winding the metallized film into a roll. The metallized film is a dielectric film provided with a metal layer. In the prior art, during the processing of the core, the metallized film is first wound into a roll. When a certain number of layers is reached, the metal layer of the metallized film is removed by means of low voltage and high current to form a protective light film. Finally, wrap the light film on the outside to make the final seal. This way will cause waste of the metallized film.

Contents of the invention

The purpose of the present invention is to provide a film roll wrapping device, which can connect the optical film to the wound metallized film and perform final sealing to form protection, reducing the waste of the metallized film.

Embodiments of the invention are achieved through the following technical solutions:

A film roll wrapping device, including a winding machine body and a film splicing mechanism; the winding machine body includes a winding shaft and a film transfer mechanism; the film transfer mechanism transfers the metallized film to the winding shaft for winding The film splicing mechanism includes a pinch roller and a film feeding mechanism; the pinch roller can move along the radial direction of the winding shaft, so that when the pinch roller touches the film roll, the pinch roller The tight roller is pressed on the joint between the metallized film and the film roll; one end of the film feeding mechanism is connected with a light film; the film feeding mechanism transports the end of the light film to the film roll The junction with the metallized film is located between the film roll and the metallized film.

Further, the film feeding mechanism includes a feeding rod; two conveying rollers abutting against each other are arranged at the front end of the feeding rod, so that the two conveying rollers can clamp the optical film and convey it forward.

Further, the front end of the feeding rod is also provided with two guide plates; along the direction of the feeding rod to its front end, the distance between the two guide plates decreases gradually; There are several air nozzles; the jetting direction of the air nozzles points to the front end of the feeding rod; several of the air nozzles are evenly distributed on both sides of the feeding rod.

Further, the machine base is provided with a rotating plate; the feeding rod is arranged on the rotating plate, so that the rotating plate can drive the feeding rod to swing close to or away from the winding shaft.

Further, the feed rod is provided with threads; the rotating plate is also provided with a nut and a motor that drives the nut to rotate in conjunction with the feed rod, so that when the motor rotates, the feed rod approaches or moves away from the winding axis.

Further, the machine base is provided with a slider; the pressing roller is arranged on the slider; the slider is matched with a driving screw so that the rotation of the driving screw can drive the slider along the The radial direction of the winding shaft moves; the slider is also provided with a distance sensor to detect the distance between it and the winding shaft.

Further, the rotating shaft of the pressure roller is inserted into the slider; a thrust sensor is arranged between the rotating shaft and the slider, so that the thrust sensor can detect the pressure of the film roll on the Roller thrust.

Further, a heating wire for heating the pressing roller is arranged inside the pressing roller.

Further, the base is provided with slide rails vertically; the slide rails are slidably provided with tension rollers; the base is provided with a guide roller on both sides of the slide rails; the tension rollers pass through The optical film is suspended on the base and the optical film is suspended on one of the guide rollers on both sides of the tension roller.

The technical solutions of the embodiments of the present invention have at least the following advantages and beneficial effects:

When the film roll wrapping device designed by the present invention is used, the film transfer mechanism of the winding machine transfers the metallized film to the winding shaft and winds it through the winding shaft. During the winding process, the film transfer mechanism continuously transfers the metallized film to the winding shaft. When winding to the set thickness, the pinch roller moves to the film roll and presses against the film roll; at this time, the pinch roller's pinch part is the tangent part between the metallized film and the film roll, so that the subsequent winding The homogenized film wound during the process is compressed, which makes the film roll more compact. Subsequently, the film feeding mechanism pushes the end of the optical film to the gap between the metallized film and the film roll. The winding shaft rewinds and the film feeding mechanism continuously transports the light film to the film roll for winding. In the subsequent winding, the metallized film and the optical film are wound together and the metallized film compresses the optical film to the film roll; at the same time, the metallized film and the optical film are compressed when passing through the pressing roller to ensure the tightness of the winding . When the optical film is wound in one to two layers, the optical film has been wound in a full circle, so that the end of the optical film has been compacted by the subsequent optical film. At this point, the metallized film was cut and continued to be wound. During this process, the light film will not loosen. After the optical film is gradually wound to a certain thickness, it can be cut and sealed. At this point, the winding of the film roll is completed.

This film roll wrapping device is capable of winding the optical film behind the metallized film. The optical film here is an ordinary dielectric film without a metal layer, and its cost is much lower than that of a metal sliding film. The use of optical film for sealing greatly reduces the cost. At the same time, the winding machine does not need to remove the metal layer of the original metallized film, which reduces the process.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention, and thus It should be regarded as a limitation on the scope, and those skilled in the art can also obtain other related drawings based on these drawings without creative work.

Fig. 1 is the structural representation of film coil wrapping device of the present invention;

Fig. 2 is the enlarged view of place a in Fig. 1;

Figure 3 is a schematic diagram of the cooperation of the rotating plate and the feeding rod;

Fig. 4 is the cooperating schematic diagram of pinch roller and winding shaft;

Fig. 5 is an enlarged view of point b in Fig. 4 .

Icons: 1-winding shaft, 2-film roll, 3-pressure roller, 4-metallized film, 5-light film, 6-feeding rod, 7-conveying roller, 8-guide plate, 9-air nozzle, 10-rotary plate, 11-nut, 12-slider, 13-distance sensor, 14-thrust sensor, 15-heating wire, 16-slide rail, 17-tension roller, 18-guide roller, 19-rotary motor, 20 - machine base, 21 - driving screw, 22 - counterweight, 23 - chute, 24 - servo motor, 25 - elastic contact, 26 - electrode, 27 - motor.

Detailed ways

In order to make the purpose, 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 in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.

Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

It should be noted that like numerals and letters denote similar items in the following figures, therefore, once an item is defined in one figure, it does not require further definition and explanation in subsequent figures.

In the description of the present invention, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" " and other indications are based on the orientation or positional relationship shown in the attached drawings, or the orientation or positional relationship that is usually placed when the application product is used, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating Or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as limiting the invention.

In the description of the present invention, it also needs to be explained that, unless otherwise clearly stipulated and limited, if the terms "setting", "installation", "connection" and "connection" appear, they should be understood in a broad sense, for example, it can be a fixed The connection can also be a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations.

Example:

As shown in FIGS. 1-5 , the present invention provides a film roll wrapping device, which includes a winding machine body and a film splicing mechanism. The main body of the winding machine is a common winding machine in the market, and its structure and principle will not be described in detail in this embodiment. The winding machine body includes a machine base 20, a winding shaft 1 and a film transfer mechanism. The film transfer mechanism includes an unwinding device for placing the metallized film 4 roll 2 and several rollers for guiding and conveying the metallized film 4 . The film transfer mechanism transfers the metallized film 4 to the winding shaft 1 for winding. The film splicing mechanism includes a pinch roller 3 and a film feeding mechanism. The pinch roller 3 can move along the radial direction of the winding shaft 1 , so that when the pinch roller 3 touches the film roll 2 , the pinch roll 3 is pressed against the joint between the metallized film 4 and the film roll 2 . Specifically, the machine base 20 is provided with a chute 23 , and the slide block 12 is provided inside the chute 23 . The pinch roller 3 is provided on the slider 12 . The slider 12 is matched with a drive screw 21 , so that the rotation of the drive screw 21 can drive the slider 12 to move along the radial direction of the winding shaft 1 . In order to drive the driving screw 21 to rotate, the driving screw 21 is also connected with a rotating motor 19 .

One end of the film feeding mechanism is connected with a light film 5 . In practice, the optical film 5 is also equipped with an unwinding device for placing the roll 2 of the optical film 5 and several rollers for guiding and transporting the optical film 5 . Furthermore, it is ensured that the optical film 5 can be continuously delivered to the feeding rod 6 . During the winding process of the film roll 2 , the subsequent metallized film 4 is in contact with the film roll 2 and the straight line where the metallized film 4 is located is tangent to the outer circle of the film roll 2 . This makes a certain gap between the metallized film 4 and the film roll 2 . The film feeding mechanism transports the end of the optical film 5 to the joint between the film roll 2 and the metallized film 4 and is located between the film roll 2 and the metallized film 4 .

When the film roll wrapping device designed in the present invention is used, the film transfer mechanism of the winding machine transfers the metallized film 4 to the winding shaft 1 and winds it through the winding shaft 1 . During the winding process, the film transfer mechanism continuously transfers the metallized film 4 to the winding shaft 1 . When winding to a set thickness, the pinch roller 3 moves to the film roll 2 and is pressed against the film roll 2 . At this time, the pressing part of the pressing roller 3 is the tangent part between the metallized film 4 and the film roll 2, so that the homogenized film wound in the subsequent winding process is compressed, and the film roll 2 is wound more tightly. Tight. Subsequently, the film feeding mechanism pushes the end of the optical film 5 to the gap between the metallized film 4 and the film roll 2 . The winding shaft 1 rewinds and the film feeding mechanism continuously transports the optical film 5 to the film roll 2 for winding. In subsequent winding, the metallized film 4 and the optical film 5 are wound together and the metallized film 4 presses the optical film 5 against the film roll 2 . At the same time, the metallized film 4 and the optical film 5 are compressed when passing through the pressing roller 3 to ensure the firmness of the winding. When the optical film 5 rolls 2 around one to two layers, the optical film 5 has been wound one full turn, so that the end of the optical film 5 has been compacted by the subsequent optical film 5 . At this time, the metallized film 4 is cut and the winding is continued. During this process, the light film 5 will not loosen. After the optical film 5 is gradually wound to a certain thickness, it can be cut and sealed. So far, the winding of the film roll 2 is completed.

This film roll wrapping device can connect the optical film 5 behind the metallized film 4 for winding. The optical film 5 here is an ordinary dielectric film without a metal layer, and its cost is much lower than that of a metal sliding film. Adopting optical film 5 to seal has just greatly reduced cost. At the same time, the winding machine does not need to remove the metal layer of the original metallized film 4, which reduces the process.

In this embodiment, the film feeding mechanism includes a feeding rod 6 . The front end of the feeding rod 6 is provided with two conveying rollers 7 abutting against each other. The optical film 5 is transported to the feeding rod 6 and passes between the two transport rollers 7 so that the two transport rollers 7 can clamp the optical film 5 and transport it forward. In order to facilitate the transportation of the optical film 5, the two conveying rollers 7 may be provided with motors that drive their rotation, so that the conveying rollers 7 actively send the optical film 5 forward. When the roll 2 of the metallized film 4 is wound to a predetermined thickness, the two delivery rollers 7 rotate to transport the end of the optical film 5 to the gap between the metallized film 4 and the roll 2 . In the subsequent winding process, since the optical film 5 is only overlapped on the film roll 2, the active conveyance of the conveying roller 7 enables the optical film 5 to be smoothly transported to the film roll 2 for winding. To prevent the metallized film 4 from pressing against the film roll 2, the frictional force provided is not enough to cause the optical film 5 to be unable to continue to be conveyed and wound.

In this embodiment, two guide plates 8 are also provided at the front end of the feeding rod 6 . Along the direction of the feed rod 6 toward its front end, the distance between the two guide plates 8 decreases gradually. Several air nozzles 9 are also arranged between the two guide plates 8 . The jetting direction of air nozzle 9 points to the front end of feeding rod 6 . Several air nozzles 9 are evenly distributed on both sides of the feeding rod 6 . When the end of the optical film 5 is transported between the metallized film 4 and the film roll 2 , several air nozzles 9 are located on both sides of the optical film 5 . The air nozzle 9 sprays air at the same time so that the airflow drives the light film 5 to move forward. As the gap between the two guide plates 8 decreases gradually, the airflow velocity at the outlet of the air channel formed by the two guide plates 8 increases and ejects, so that the airflow can better drive the end of the light film 5 to the film. Volume 2 surface. This also enables the front end of the feeding rod 6 to accurately transport the end of the light film 5 to the film roll 2 for winding without touching the film roll 2, reducing the contact between the outside world and the film roll 2, reducing wear and tear, and avoiding damage to the film roll 2 .

In this embodiment, the base 20 is provided with a rotating plate 10 that can rotate relative thereto. The feeding rod 6 is disposed on the rotating plate 10 so that the rotating plate 10 can drive the feeding rod 6 to swing close to or away from the winding shaft 1 . In actual use, due to the different types of capacitors, the diameters of the film rolls 2 are also different. In order to transport the light film 5 to the film roll 2 better, the angle of the feeding rod 6 can be adjusted so that the direction of the air jet is tangent to the surface of the film roll 2 . In order to ensure that the rotating plate 10 can rotate accurately and adjust the angle of the feeding rod 6 , the rotating plate 10 is also provided with a servo motor 24 that drives its rotation.

In addition, the feeding rod 6 is provided with threads. The rotating plate 10 is also provided with a nut 11 and a motor 27 that drives the nut 11 to rotate in conjunction with the feeding rod 6 , so that when the motor 27 rotates, the feeding rod 6 approaches or moves away from the winding shaft 1 . The nut 11 is rotatably disposed on the rotating plate 10 , so that the nut 11 can only rotate relative to the rotating plate 10 and cannot slide. The expansion and contraction of the feeding rod 6 makes the adjustment range of the feeding rod 6 larger, and then the end of the optical film 5 can be pushed to the surface of the film roll 2 by telescopic feeding rod 6, thereby better adapting to film rolls 2 of different sizes.

At the initial stage of contact between the optical film 5 and the film roll 2, the optical film 5 and the film roll 2 are not well connected. If the linear speed between the two is different, the optical film 5 cannot be wound well. , affecting the splicing quality of the light film 5 . In this embodiment, the slider 12 is also provided with a distance sensor 13 for detecting the distance between it and the winding shaft 1 . Specifically, the distance sensor 13 is a laser ranging sensor, and the distance between the slider 12 and the winding shaft 1 can be calculated by combining the distance between the distance sensor 13 and the fixed point on the base and the distance between the fixed point and the winding shaft 1 . When the pressure roller 3 is pressed against the film roll 2, the thickness of the film roll 2 can be calculated through the distance between the slider 12 and the winding shaft 1, and then the linear speed of the film roll 2 surface can be calculated, and then can be adjusted. The rotating speed of conveying roller 7 is to guarantee that the speed that optical film 5 transmits is identical with the line speed of film roll 2.

In the process of pressing the film roll 2 with the pressing roller 3, it is difficult to determine whether the pressing is tight. In this embodiment, the slider 12 is provided with an insertion hole, and the rotating shaft of the pressure roller 3 is inserted into the slider 12 . A thrust sensor 14 is arranged between the rotating shaft and the wall of the insertion hole of the slider 12 . When the pressing roller 3 presses the film roll 2, the mutual thrust between the two is transmitted to the thrust sensor 14, and then the thrust sensor 14 detects the magnitude of the thrust. When pressing each time, the clamping situation is judged by the detection data of the thrust sensor 14 . Thereby, whether to clamp or not has a uniform standard. Further, the distance between the slider 12 and the winding shaft 1 is measured under the same standard, and the measurement result is more accurate, which is beneficial to the precise control of the linear speed of the conveying roller 7 .

In this embodiment, a heating wire 15 for heating the pressing roller 3 is arranged inside the pressing roller 3 . Specifically, two ring-shaped electrodes 26 are arranged on the surface of the slider 12 ; each of the two electrodes 26 of each heating wire 15 is provided with an elastic contact 25 corresponding to one electrode 26 . The two elastic contacts 25 of each heating wire 15 are respectively connected to one electrode 26 , so that the heating wire 15 can be powered on and generate heat under control. At the same time, during the rotation of the pinch roller 3 , the elastic electrode 26 follows the rotation and always contacts the ring electrode 26 . When the optical film 5 is first rolled, the adhesion after winding is not good due to the elasticity of the optical film 5 and the metallized film 4 . After being heated and compacted by the pressing roller 3 , both the optical film 5 and the metallized film 4 are better attached to the surface of the film roll 2 . It is more conducive to the shaping and splicing of the light film 5 at the initial stage of splicing. At the same time, after the optical film 5 roll 2 is wound to a certain thickness, the temperature of the pressure roller 3 rises, and then the optical film 5 is heated and bonded, thereby completing the closing of the film roll 2 .

In this embodiment, the base 20 is vertically provided with slide rails 16 . The sliding rail 16 is matched with a sliding block, and the sliding block is provided with a tension roller 17 so that the tension roller 17 is slidably arranged on the sliding rail 16 . The tension roller 17 can slide up and down freely. The base 20 is provided with a guide roller 18 on both sides of the slide rail 16 . The optical film 5 passes through two guide rollers 18 and a tension roller 17 , and the tension roller 17 is suspended on the frame 20 through the optical film 5 . When the feeding rod 6 retracts, the optical film 5 relaxes following the retraction. At this time, the tension roller 17 falls, and further tensions the optical film 5 . Setting the tension roller 17 can ensure that the tension of the optical film 5 does not fluctuate. In order to adjust the tension of the optical film 5 more conveniently, a counterweight 22 can be suspended on the tension roller 17 . The tension of the optical film 5 can be conveniently adjusted by replacing the counterweights 22 with different weights.

The above are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (5)

1. A film roll wrapping device is characterized in that: it comprises a winding machine body and a film splicing mechanism; the winding machine body comprises a winding shaft (1) and a film passing mechanism; the film passing mechanism will metallize The film (4) is transported to the winding shaft (1) for winding; the film splicing mechanism includes a pinch roller (3) and a film feeding mechanism; the pinch roll (3) can move along the winding shaft (1) ) in the radial direction, so that when the pinch roller (3) touches the film roll (2), the pinch roller (3) is pressed against the metallized film (4) and the film The junction of the roll (2); one end of the film feeding mechanism is connected with a light film (5); the film feeding mechanism transports the end of the light film (5) to the film roll (2) and the The joint of the metallized film (4) is located between the film roll (2) and the metallized film (4); The film feeding mechanism includes a feeding rod (6); the front end of the feeding rod (6) is provided with two mutually abutting conveying rollers (7), so that the two conveying rollers (7) can move the optical film (5) Clamp and transport forward; The front end of the feed rod (6) is also provided with two guide plates (8); along the direction of the feed rod (6) to its front end, the distance between the two guide plates (8) decreases gradually; Several air nozzles (9) are also arranged between the two guide plates (8); the jet direction of the air nozzles (9) points to the front end of the feeding rod (6); several of the air nozzles (9) are evenly Distributed on both sides of the feeding rod (6); The winding machine body is provided with an organic base (20); the base (20) is provided with a rotating plate (10); the feeding rod (6) is arranged on the rotating plate (10), so that the rotating The plate (10) can drive the feeding rod (6) to swing close to or away from the winding shaft (1); The feed rod (6) is provided with threads; the rotating plate (10) is also provided with a nut (11) and a motor that drives the nut (11) to rotate with the feed rod (6), so that when the motor rotates, , the feeding rod (6) approaches or moves away from the winding shaft (1). 2. The film roll coating device according to claim 1, characterized in that: the base (20) is provided with a slider (12); the pressure roller (3) is arranged on the slider (12) ); the slider (12) is matched with a drive screw (21), so that the drive screw (21) can be rotated to drive the slider (12) along the radial direction of the winding shaft (1) Movement; the slider (12) is also provided with a distance sensor (13) for detecting the distance between it and the winding shaft (1). 3. The film roll coating device according to claim 2, characterized in that: the rotating shaft of the pressure roller (3) is inserted into the slider (12); the rotating shaft and the slider (12) ) is provided with a thrust sensor (14), so that the thrust sensor (14) can detect the thrust of the film roll (2) on the pressure roller (3). 4. The film roll wrapping device according to claim 3, characterized in that: an electric heating wire (15) for heating the pressing roller (3) is arranged inside the pressing roller (3). 5. The film roll coating device according to claim 4, characterized in that: said base (20) is vertically provided with slide rails (16); said slide rails (16) are slidably provided with tension Roller (17); said base (20) is respectively provided with a guide roller (18) on both sides of said slide rail (16); said tension roller (17) is suspended on said light film (5) The stand (20) and the light film (5) are suspended on one guide roller (18) on both sides of the tension roller (17).

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