CN211222097U

CN211222097U - Welding device for disposable sanitary products

Info

Publication number: CN211222097U
Application number: CN201921478699.7U
Authority: CN
Inventors: 龚志龙; 李大柱
Original assignee: Huangshan Futian Precision Manufacturing Co Ltd
Current assignee: Huangshan Futian Precision Manufacturing Co Ltd
Priority date: 2019-09-05
Filing date: 2019-09-05
Publication date: 2020-08-11
Anticipated expiration: 2029-09-05

Abstract

The utility model discloses a welding device for disposable sanitary products, which comprises an ultrasonic vibration component fixedly arranged on a conveying path of the disposable sanitary products, wherein the ultrasonic vibration component comprises an ultrasonic welding head acting on the surface of the disposable sanitary products; realize the gyro wheel of disposable sanitary product butt fusion with the cooperation of ultrasonic bonding tool, the gyro wheel is reciprocating motion and rolls along self axis direction on the ultrasonic bonding tool, the gyro wheel is provided with 2 at least side by side along gyro wheel reciprocating motion's direction, and the size of 2 gyro wheels is the same and synchronous motion. The utility model discloses a set up two gyro wheels around on the reciprocating motion direction of gyro wheel to the improvement carries out the pre-compaction to the comparatively fluffy non-woven fabrics material of fibre, carries out the butt fusion again, thereby improves the intensity of butt fusion. Meanwhile, the power consumption of the ultrasonic assembly can be reduced, and the service life of the ultrasonic assembly is prolonged.

Description

Welding device for disposable sanitary products

Technical Field

The utility model belongs to the technical field of disposable hygiene goods processing technique and specifically relates to a disposable hygiene goods butt fusion device that carries out butt fusion to disposable hygiene goods is related to.

Background

The disposable sanitary products are usually butt jointed at the joint in a welding mode, which not only has low cost, but also facilitates the mechanical continuous processing, thereby improving the processing efficiency. Ultrasonic welding is widely used as a way of welding disposable sanitary products, and has the advantages of high welding efficiency and good effect. The ultrasonic welding device mainly comprises a welding head and a roller matched with the welding head, and the welding of the disposable sanitary product is realized through the matching of the welding head and the roller. The welding is accomplished in the round trip reciprocating motion that all adopts a gyro wheel on the bonding tool to current structure, and at gyro wheel reciprocating motion's in-process, the ultrasonic wave lasts work, makes the bonding tool do high frequency vibration all the time, consequently, at whole welding in-process, ultrasonic wave consumption is big, especially to some fibre for fluffy nonwoven material, needs the increase pressure just can the compaction weld, and this just needs further increase ultrasonic power, improves ultrasonic load to influence ultrasonic wave's life.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a disposable sanitary product welding device, it is big to solve current ultrasonic wave welding device required power, influences ultrasonic wave's life's problem.

The utility model provides a technical scheme that its technical problem adopted is: a disposable hygiene article welding apparatus for welding disposable hygiene articles, comprising:

an ultrasonic vibration assembly fixedly arranged on a conveying path of the disposable sanitary product, wherein the ultrasonic vibration assembly comprises an ultrasonic welding head acting on the surface of the disposable sanitary product;

the roller is matched with the ultrasonic welding head to realize the welding of the disposable sanitary product, the roller reciprocates on the ultrasonic welding head and rolls along the axis direction of the roller, at least 2 rollers are arranged at the front and the back of the roller in the reciprocating direction, and the 2 rollers have the same size and move synchronously;

the moving support piece can move back and forth along the reciprocating motion direction of the roller, and the roller is arranged on the moving support piece;

and the pressure maintaining component is fixedly arranged on the movable supporting piece and used for adjusting the pressure between the roller and the ultrasonic welding head and ensuring the pressure required during welding.

Preferably, the surface of the roller is provided with knurls, and the knurls of the two rollers are the same in shape.

In order to realize the synchronous motion of the two rollers, a main rotating shaft is arranged on the movable supporting piece, a driving gear is arranged on the main rotating shaft, a driven shaft is fixedly arranged on the rollers, a driven gear meshed with the driving gear is arranged on the driven shaft, and the driving gear rotates to drive the driven gear to rotate, so that the rollers rotate.

In order to facilitate the connection and support of the roller, a connecting piece is arranged between the main rotating shaft and the driven shaft, and the main rotating shaft and the driven shaft are rotatably arranged on the connecting piece.

In order to ensure that the roller has enough pressure during welding, the movable support piece is provided with a swing arm, the swing arm is rotatably supported on the movable support piece, the main rotating shaft is arranged at one end of the swing arm close to the ultrasonic welding head, and the pressure maintaining part is connected with the other end of the swing arm and used for adjusting the angle of the swing arm so as to provide required pressure for the roller.

Further, the ultrasonic vibration component comprises an amplitude amplifier connected with the ultrasonic welding and an energy converter connected to the amplitude amplifier.

The utility model has the advantages that: the utility model discloses a set up two gyro wheels around on the reciprocating motion direction of gyro wheel for at the butt fusion in-process, carry out the pre-compaction to disposable sanitary goods earlier at earlier gyro wheel, thereby make the gyro wheel after at the roll extrusion butt fusion in-process, further carry out the compaction butt fusion to the material, more be favorable to the butt fusion, improve the butt fusion intensity. Through the secondary rolling, compare a rolling, its pressure can suitably reduce, consequently, the power of ultrasonic wave can reduce to improve the life of ultrasonic wave subassembly. In addition, due to the adoption of the structure of the double rollers, in the reciprocating process of the rollers, the ultrasonic waves are opened only in one-way intervals to complete welding, if the ultrasonic waves are opened in the advancing direction of the rollers to weld, the ultrasonic waves are closed in the returning process of the rollers, so that the power consumption of the ultrasonic waves is reduced, and the service life of the ultrasonic waves is prolonged.

The present invention will be described in more detail with reference to the accompanying drawings and examples.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is the distribution diagram of the middle welding zone and the non-welding zone of the present invention.

Fig. 3 is a position relation diagram of the ultrasonic welding head and the roller in the middle welding state of the utility model.

Fig. 4 is a position relation diagram of the ultrasonic welding head and the roller in the non-welding state of the present invention.

Fig. 5 is a schematic view of the transmission structure of the middle roller of the present invention.

Detailed Description

In one embodiment, a disposable hygiene article welding apparatus for welding disposable hygiene articles, including infant pull-ups, feminine menstrual pants, and the like. As shown in fig. 1, the welding apparatus for disposable sanitary products comprises a set of ultrasonic welding units fixedly arranged on a conveying path of the disposable sanitary products, wherein the ultrasonic welding units are arranged in a circle and do a rotary motion along the axis of the circle. The ultrasonic welding unit comprises an ultrasonic vibration assembly fixedly arranged on the rotary circumference, and the ultrasonic vibration assembly comprises an ultrasonic welding head 1 acting on the surface of the disposable sanitary product, an amplitude amplifier 2 connected with the ultrasonic welding head 1 and an energy converter 3 connected to the amplitude amplifier 2. The welding surface of the ultrasonic welding head 1 contacted with the disposable sanitary product is a strip-shaped plane structure. The welding device is characterized by further comprising a roller 4 which is matched with the ultrasonic welding head 1 to realize welding of the disposable sanitary products, wherein during welding, the roller 4 acts on the ultrasonic welding head 1 under certain pressure, the roller 4 reciprocates on the ultrasonic welding head 1 and rolls along the axis direction of the roller 4, and the disposable sanitary products passing between the roller 4 and the ultrasonic welding head 1 are welded.

On the rotation circumference, the action section of the ultrasonic welding unit can be divided into a non-welding area and a welding area; in the non-welding area, the roller 4 is in a static state relative to the ultrasonic welding head 1 in the area outside the ultrasonic welding head 1, as shown in fig. 4; in the welding zone, the roller 4 acts on the ultrasound horn 1 and performs a reciprocating movement with respect to the ultrasound horn 1 and a pure rolling movement along its own axis, as shown in fig. 3; the angle of the non-welding area ranges from 30 degrees to 90 degrees, and is a continuous area, and the rest is a welding area, as shown in fig. 2.

The rollers 4 are arranged at least two, preferably two, in the direction of the reciprocating motion. The two rollers 4 have the same size and move synchronously; the surface of the roller 4 is provided with knurls, and the knurls of the two rollers 4 are the same in shape. The two rollers 4 act in succession on the same area of the disposable sanitary article, effecting welding of this area. This structure is at the welding process, and preceding gyro wheel carries out the pre-compaction to disposable sanitary goods earlier to the gyro wheel that makes after further carries out the compaction butt fusion to the material at the roll extrusion butt fusion in-process, more is favorable to the butt fusion, improves the butt fusion's intensity, is particularly suitable for the comparatively fluffy butt fusion of non-woven materials of fibre.

In order to realize synchronous rolling and reciprocating movement of the roller 4, the specific installation structure of the roller 4 is as follows:

a set of moving supports 5 arranged along the conveying circumference direction of the disposable sanitary products, the moving supports 5 are arranged on the circumference through fixed supports (not shown) and rotate along with the disposable sanitary products on the circumference, and meanwhile, the moving supports 5 can also do reciprocating movement along the axis direction of the circumference under the action of a driving source. The arrangement of the driving source is not the key point of the present invention, and will not be described in detail here. As shown in fig. 1, 3 and 4, the movable support 5 includes a bottom plate 501 and a vertical plate 502, a sliding groove 503 is disposed at the bottom of the bottom plate 501, a sliding rail engaged with the sliding groove 503 is disposed on the fixed support, and the sliding groove 503 is disposed at each of four corners of the bottom plate 501.

The vertical plate 502 is provided with a swing arm 6, and the swing arm 6 is rotatably supported on the vertical plate 502 through a middle supporting point. One end of the swing arm 6 close to the ultrasonic welding head 1 is provided with a main rotating shaft 7, and the main rotating shaft 7 is provided with a driving gear 8. A driven shaft 9 is fixedly arranged on the roller 4, a driven gear 10 meshed with the driving gear 8 is arranged on the driven shaft 9, and the driving gear 8 rotates to drive the driven gear 10 to rotate, so that the roller 4 rotates. A connecting piece 11 is arranged between the main rotating shaft 7 and the driven shaft 9, and the main rotating shaft 7 and the driven shaft 9 are rotatably arranged on the connecting piece 11 so as to provide rotating support for the roller 4. The main rotating shaft 7 can be connected with a power device to drive the main rotating shaft 7 to rotate.

In order to adjust the pressure of the roller 4 on the ultrasonic welding head 1 and to keep the pressure constant during welding, the welding of the disposable sanitary articles is completed. The other end of the swing arm 6 opposite to the main rotating shaft 7 is connected with a pressure maintaining part 12, so that the roller 4 is ensured to act on the ultrasonic welding head 1 with certain pressure during welding. The pressure maintaining part 12 is preferably a pressure cylinder which is fixedly arranged on the movable support part 5, the telescopic movable end of the pressure cylinder is connected with the swing arm 6, and the pressure cylinder acts to drive the swing arm 6 to rotate around a middle supporting point, so that the gap and the pressure between the roller 4 and the ultrasonic welding head 1 are adjusted.

To reduce the number of driving sources, the driving required for the rolling of the roller 4 may be common to the movement of the moving support 5. The specific coordination relationship is as follows:

as shown in fig. 1, 3 and 4, the riser 502 is provided with a first rotating shaft 13 and a second rotating shaft 14, the first rotating shaft 13 is provided with a first synchronous pulley 1301, the second rotating shaft 14 is provided with a second synchronous pulley 1401, the first synchronous pulley 1301 and the second synchronous pulley 1401 are located at one side of the riser 502, a first synchronous belt 15 is arranged between the first synchronous pulley 1301 and the second synchronous pulley 1401, and a connecting member (not shown in the figure) for fixing the first synchronous belt 15 and the fixed support together is arranged between the first synchronous belt 15 and the fixed support, so that when the movable support 5 moves relative to the fixed support, the first rotating shaft 13 and the second rotating shaft 14 rotate under the action of the first synchronous belt 15.

The other end of the second rotating shaft 14 is provided with a third synchronous pulley 1402, and the third synchronous pulley 1402 is positioned on the other side of the vertical plate 502 relative to the second synchronous pulley 1401. A fourth synchronous pulley 701 is fixedly installed on the main rotating shaft 7, a second synchronous belt 16 is arranged between the second synchronous pulley 1401 and the fourth synchronous pulley 701, and the second rotating shaft 14 rotates to drive the main rotating shaft 7 to rotate, so that the roller 4 rotates while moving.

The invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited by the above-described manner. Various insubstantial improvements are made by adopting the method conception and the technical proposal of the utility model; or without improvement, the above conception and technical solution of the present invention can be directly applied to other occasions, all within the protection scope of the present invention.

Claims

1. A welding device for welding disposable hygienic articles, comprising:

2. The disposable hygiene article welding apparatus of claim 1, characterized in that: the surface of the roller is provided with knurls, and the knurls of the two rollers are the same in shape.

3. The disposable hygiene article welding apparatus of claim 2, characterized in that: the movable support is provided with a main rotating shaft, a driving gear is arranged on the main rotating shaft, a driven shaft is fixedly arranged on the roller, a driven gear meshed with the driving gear is arranged on the driven shaft, and the driving gear rotates to drive the driven gear to rotate, so that the roller rotates.

4. The disposable hygiene article welding apparatus of claim 3, characterized in that: a connecting piece is arranged between the main rotating shaft and the driven shaft, and the main rotating shaft and the driven shaft are rotatably arranged on the connecting piece.

5. The disposable hygiene article welding apparatus of claim 3, characterized in that: the pressure maintaining part is connected with the other end of the swing arm and used for adjusting the angle of the swing arm so as to provide required pressure for the roller.

6. The disposable hygiene article welding apparatus of claim 1, characterized in that: the ultrasonic vibration assembly comprises an amplitude amplifier connected with the ultrasonic welding head and an energy converter connected to the amplitude amplifier.