阅读说明：本技术 一种用于双层无纺布的超声波压烫焊接装置 (Ultrasonic pressing welding device for double-layer non-woven fabric ) 是由 宋翌勤 李天云 于 2021-11-01 设计创作，主要内容包括：本发明提供一种用于双层无纺布的超声波压烫焊接装置,包括：机架,依次设置于机架上的一组前过料辊、牵引辊、压花轮架、超声波焊头架以及后过料辊；前过料辊下方设置有摆臂,其右端通过触碰牵引辊电机开关实现牵引辊电机的开启,牵引辊电机与牵引辊连接,牵引辊与压花轮相连,压花轮固定于压花轮架上,超声波焊头固定于超声波焊头架上；其中,牵引辊运转带动压花轮转动,牵引压辊将穿过牵引压辊和牵引辊之间的双层无纺布拉动前行,压花轮在气缸的作用下向下移动,与超声波焊头同时对双层无纺布的两条侧边进行压烫焊接。本发明提供的超声波压烫焊接装置不仅能够适应各种不同图案的压花轮,用于不同宽度无纺布的压烫焊接,并且压烫焊接质量稳定。(The invention provides an ultrasonic pressing welding device for double-layer non-woven fabric, which comprises: the device comprises a rack, a group of front material passing rollers, a traction roller, an embossing wheel carrier, an ultrasonic welding head frame and a rear material passing roller, wherein the front material passing rollers, the traction roller, the embossing wheel carrier, the ultrasonic welding head frame and the rear material passing rollers are sequentially arranged on the rack; a swing arm is arranged below the front material passing roller, the right end of the swing arm realizes the starting of a traction roller motor by touching a traction roller motor switch, the traction roller motor is connected with the traction roller, the traction roller is connected with an embossing wheel, the embossing wheel is fixed on an embossing wheel frame, and an ultrasonic welding head is fixed on an ultrasonic welding head frame; wherein, carry over pinch rolls operation drive embossing roller rotates, draws the compression roller and will pass and draw the double-deck non-woven fabrics pulling between compression roller and the carry over pinch rolls and move ahead, and the embossing roller moves down under the effect of cylinder, presses with ultrasonic bonding tool simultaneously two sides to double-deck non-woven fabrics and scalds the welding. The ultrasonic pressing welding device provided by the invention can be suitable for embossing wheels with various patterns, is used for pressing and welding non-woven fabrics with different widths, and has stable pressing and welding quality.)

1. The utility model provides an ultrasonic wave presses and scalds welding set for double-deck non-woven fabrics which characterized in that includes: the device comprises a rack, a group of front material passing rollers, a traction roller, an embossing wheel carrier, an ultrasonic welding head frame and a rear material passing roller, wherein the front material passing rollers, the traction roller, the embossing wheel carrier, the ultrasonic welding head frame and the rear material passing rollers are sequentially arranged on the rack;

a swing arm is arranged below the front material passing roller, the swing arm can rotate around the bearing through the fixation of a bearing, the left end of the swing arm is connected with the front material passing roller, the right end of the swing arm realizes the opening of a traction roller motor through touching a traction roller motor switch, the traction roller motor is connected with the traction roller, the traction roller is connected with an embossing wheel through a plurality of belt pulleys, the embossing wheel is fixed on an embossing wheel frame, an ultrasonic welding head is fixed on the ultrasonic welding head frame, and the embossing wheel is aligned with the ultrasonic welding head in the vertical direction;

wherein, carry over pinch rolls operation drives the knurling wheel rotates, draws the compression roller to pass pull the double-deck non-woven fabrics pulling between compression roller and the carry over pinch rolls and move ahead, the knurling wheel moves down under the effect of cylinder, carries out the pressure with ultrasonic bonding tool simultaneously to two sides of double-deck non-woven fabrics and scalds the welding.

2. The ultrasonic press welding device of claim 1, wherein the ultrasonic press welding device is arranged between a cutting device and a discharging device of the transverse cutting machine, the front material passing roller is connected with the cutting device, and the rear material passing roller is connected with the discharging device.

3. The ultrasonic ironing welding apparatus of claim 1, wherein the set of forward feed rollers is provided in a pulley block configuration.

4. The ultrasonic pressing and welding device according to claim 3, wherein the group of front feed rollers is eight front feed rollers which are arranged in an up-down symmetrical manner, and the swing arm is connected with four front feed rollers positioned below through a double-layer non-woven fabric.

5. The ultrasonic ironing and welding device according to claim 1, wherein the pulling roll is engaged with a first gear through a pulling roll gear on the surface of the pulling roll, and the first gear is fixed with a first belt pulley in parallel; the first belt pulley is connected with the second belt pulley through a belt, so that the second belt pulley runs; the second belt pulley is installed on the rotating shaft, a third belt pulley is installed on the rotating shaft, the third belt pulley drives a fourth belt pulley through a belt, and the fourth belt pulley is coaxially fixed with the embossing wheel so as to drive the embossing wheel to rotate.

6. The ultrasonic ironing and welding apparatus according to claim 5, wherein a corner wheel and a tension wheel are provided between the first pulley and the second pulley.

7. The ultrasonic ironing and welding apparatus according to claim 1, characterized in that it comprises two sets of embossing wheels and embossing wheel carriers, and two sets of ultrasonic horn and ultrasonic horn holder, which are slidable in a horizontal direction.

8. The ultrasonic ironing and welding apparatus according to claim 7, wherein said two embossing wheel carriers are simultaneously mounted on two fixed shafts mounted in parallel in a vertical direction, ensuring the smoothness of said embossing wheels.

9. The ultrasonic ironing and welding apparatus according to claim 7, wherein said two ultrasonic welding heads are simultaneously mounted on two fixed shafts which are horizontally mounted in parallel, thereby ensuring the smoothness of said ultrasonic welding heads.

10. The ultrasonic pressing and welding device of claim 1, wherein the embossing wheel is connected with a slide block and a guide rail for the slide block to move, so as to ensure that the double-layer non-woven fabric is uniformly stressed between the embossing wheel and the ultrasonic welding head.

Technical Field

The invention relates to the field of non-woven fabric pressing and welding, in particular to an ultrasonic pressing and welding device for double-layer non-woven fabrics.

Background

The non-woven fabric (non-woven fabric) wrapping material in the medical sterilization wrapping material is generally cut into square or rectangular single sheets with different specifications, and is used for wrapping various instruments for sterilization by medical institutions.

However, some great or heavier apparatus cause the damage easily when the parcel apparatus is sterilized, so a lot of customers select two non-woven fabrics to merge and wrap up, and two unconnected non-woven fabrics are not convenient enough when the parcel is operated, consequently, need to scald two non-woven fabrics and close the back use that glues together, just so need earlier with two-layer non-woven fabrics glue together the back, the equipment that cuts again accomplishes, however prior art does not press the hot welding set to the ultrasonic wave of double-deck non-woven fabrics.

At present, the non-woven fabric transverse cutting equipment on the market only has the function of transversely cutting off a non-woven fabric coiled material and does not have the function of ironing two edges of the non-woven fabric coiled material, and the bag making equipment has the functions of ironing and cutting off, but most of the bag making equipment is electrically heated and ironed and is not suitable for the non-woven fabric, in addition, the width of the bag making equipment is relatively narrow, and the slicing requirement of the specification of a non-woven fabric wrapping material cannot be met at all.

Therefore, it is necessary to add a pressing function to both edges of the double-layer nonwoven fabric on the nonwoven fabric crosscutting device. The medical sterilization wrapping material non-woven fabric is made of thermoplastic polypropylene (PP), so that ultrasonic ironing is more suitable.

Ultrasonic waves, when applied to thermoplastic plastic contact surfaces, produce high-frequency vibrations of several tens of thousands of times per second, which, to a certain amplitude, transmit ultrasonic energy through the upper weldment to the weld zone, which is a weld having a high acoustic resistance at its interface, and thus produces a locally high temperature. And because the plastic has poor thermal conductivity, the plastic cannot be diffused in time and is gathered in a welding area, so that the contact surfaces of the two plastics are quickly melted, and the two plastics are fused into a whole after a certain pressure is applied.

The quality of the ultrasonic wave for welding the non-woven fabric depends on three factors, namely the amplitude of an ultrasonic welding head (the power of the welding head), the applied pressure, the welding time and the like. The three quantities have proper values in interaction, when the energy exceeds the proper values, the melting quantity of the non-woven fabric is large, and the non-woven fabric is easy to deform or scald during welding; if the energy is small, the welding is not easy to be performed. When a suitable amplitude ultrasonic horn is selected, and a suitable pressure is applied to the double-layer nonwoven, the quality of the weld is dependent on the time of welding. Therefore, when welding, the quality of pressing and welding can be ensured only by relatively fixed time, namely the passing speed of the materials between the ultrasonic welding heads needs to be consistent, namely uniform motion.

The welding of double-deck non-woven fabrics is accomplished between embossing wheel and ultrasonic bonding tool, and when double-deck non-woven fabrics was at the uniform velocity when passing through between embossing wheel and the bonding tool that has certain pressure, certain pressure was produced between the protruding position on the embossing wheel and the ultrasonic bonding tool, and the welding is successful just to the double-deck non-woven fabrics through the position, and the decorative pattern of welding continuous position is protruding pattern on the embossing wheel.

In order to meet the welding patterns and requirements of different requirements, the patterns of the embossing wheel are various, and the embossing wheel is provided with uniform and continuous dot-shaped or dotted embossing wheels, and the welding position of the embossing wheel, namely the position where two layers are connected, is continuous dot-shaped or dotted; the embossing wheel with the characters or the trademark patterns is not continuous and is spaced, namely, a section of the embossing wheel with the characters or the patterns is provided with the characters or the patterns, and a section of the embossing wheel is blank, so that the pressing welding positions are spaced characters or the trademark patterns.

When the embossing wheel with uniform and continuous patterns is used for pressing and welding, as long as the double-layer non-woven fabric passes through at a constant speed, the embossing wheel can be driven to roll at a constant speed, so that the double-layer non-woven fabric is pressed and welded, and the quality is relatively stable. The embossing rollers which are not uniform in pattern, especially discontinuous, cannot be pressed by the passive rolling mode, and the non-woven fabric can contact with the embossing rollers and move to drive the embossing rollers to roll along with the embossing rollers because the characters or the patterns are convex; the blank part without characters or patterns is concave, the non-woven fabric is not contacted with the embossing wheel, and the blank part without characters or patterns can not be realized if the non-woven fabric moves to drive the embossing wheel to run. Therefore, if the pressing and welding requirements of different characters or patterns of the double-layer non-woven fabric are to be met, the embossing wheel cannot be operated passively.

Therefore, the problem that the embossing wheel is changed from passive operation to active operation is solved. Only when the embossing wheel is actively operated, the pressing welding of continuous, uniform and uninterrupted characters or patterns can be met, and the pressing welding of various embossing wheels with unevenly arranged characters or patterns, discontinuity between characters and patterns and the like can be met.

After the embossing wheel is changed from passive operation to active operation, the problem of synchronization of the operation of the embossing wheel and the movement of the double-layer non-woven fabric is solved. If the operation of the embossing wheel is not uniform with the moving speed of the non-woven fabric, the characters or patterns pressed and welded are inconsistent with the characters or patterns on the embossing wheel, and the deformation condition is generated. It is therefore necessary to ensure that the speed at which the embossing wheel actively runs is equal to the speed at which the nonwoven is drawn, so that the power for the active running of the embossing wheel is optimally provided by the movement of the nonwoven.

The material drawing mode of the transverse cutting machine for cutting the non-woven fabric is intermittent, when the cutter is lifted, the drawing roller instantly draws the required cutting length, the material drawing is stopped, the cutter falls down to cut the material, and the process is repeated to finish the transverse cutting of the material. Therefore, in order to rely on the movement of the non-woven fabric as the power of the embossing wheel, the intermittent material pulling problem of the transverse cutting machine must be solved, and the stable and good quality of the pressing welding can be ensured only if the non-woven fabric moves at a constant speed between the embossing wheel and the ultrasonic welding head.

Disclosure of Invention

The invention aims to provide an ultrasonic pressing and welding device for double-layer non-woven fabrics, and therefore the problem that a device which can simultaneously perform ultrasonic pressing and welding on the double-layer non-woven fabrics and can ensure stable and good pressing and welding quality is lacking in the prior art is solved.

In order to solve the technical problems, the invention adopts the following technical scheme:

provided is an ultrasonic wave pressing welding device for double-layer non-woven fabric, comprising: the device comprises a rack, a group of front material passing rollers, a traction roller, an embossing wheel carrier, an ultrasonic welding head frame and a rear material passing roller, wherein the front material passing rollers, the traction roller, the embossing wheel carrier, the ultrasonic welding head frame and the rear material passing rollers are sequentially arranged on the rack; a swing arm is arranged below the front material passing roller, the right end of the swing arm realizes the opening of a traction roller motor by touching a traction roller motor switch, the traction roller motor is connected with the traction roller, the traction roller is connected with an embossing wheel through a plurality of belt pulleys, the embossing wheel is fixed on an embossing wheel frame, an ultrasonic welding head is fixed on the ultrasonic welding head frame, and the embossing wheel and the ultrasonic welding head are aligned in the vertical direction; wherein, carry over pinch rolls operation drives the knurling wheel rotates, draws the compression roller to pass pull the double-deck non-woven fabrics pulling between compression roller and the carry over pinch rolls and move ahead, the knurling wheel moves down under the effect of cylinder, carries out the pressure with ultrasonic bonding tool simultaneously to two sides of double-deck non-woven fabrics and scalds the welding.

The ultrasonic pressing welding device is arranged between a cutting device and a discharging device of the transverse cutting machine, the front material passing roller is connected with the cutting device, and the rear material passing roller is connected with the discharging device.

The group of front material passing rollers are provided in a pulley block mode.

The front material passing rollers are eight front material passing rollers which are symmetrically arranged from top to bottom, and the swing arm is connected with the four front material passing rollers positioned below through double-layer non-woven fabrics.

The traction roller is meshed with a first gear through a traction roller gear on the surface of the traction roller, and the first gear is fixed with a first belt pulley in parallel; the first belt pulley is connected with the second belt pulley through a belt, so that the second belt pulley runs; the second belt pulley is installed on the rotating shaft, a third belt pulley is installed on the rotating shaft, the third belt pulley drives a fourth belt pulley through a belt, and the fourth belt pulley is coaxially fixed with the embossing wheel so as to drive the embossing wheel to rotate.

And a corner wheel and a tension wheel are arranged between the first belt pulley and the second belt pulley.

The ultrasonic pressing and welding device comprises two groups of embossing wheels and embossing wheel carriers which can slide along the horizontal direction, and two groups of ultrasonic welding heads and ultrasonic welding head frames, and the pressing and welding of non-woven fabrics with different widths can be realized by adjusting the distance between the two groups of ultrasonic welding heads and the ultrasonic welding head frames.

The two embossing wheel frames are simultaneously arranged on two fixed shafts which are arranged in parallel along the vertical direction, so that the stability of the embossing wheel is ensured.

The two ultrasonic welding head frames are simultaneously arranged on the two fixed shafts which are arranged in parallel along the horizontal direction, so that the stability of the ultrasonic welding heads is ensured.

The left side and the right side of the embossing wheel are respectively connected with a sliding block and a guide rail for the sliding block to move, so that the double-layer non-woven fabric is ensured to be stressed uniformly between the embossing wheel and the ultrasonic welding head.

The key point of the invention is that through special structural design, the embossing wheel is changed from passive operation to active operation, and the active operation speed of the embossing wheel is kept consistent with the traction movement speed of the non-woven fabric, so that the stable and good pressing welding quality can be ensured as long as the non-woven fabric moves at a constant speed between the embossing wheel and the ultrasonic welding head.

According to the ultrasonic pressing welding device for the double-layer non-woven fabric, compared with the prior art, the ultrasonic pressing welding device has the following beneficial effects:

1) the method is suitable for pressing and welding various patterns: no matter the point-shaped or dotted pressing welding or the character and pattern pressing welding, the corresponding pattern can be pressed only by manufacturing the pattern content to be welded into the corresponding embossing wheel.

2) The two edges of adaptation different width materials press to scald the welding: the embossing wheel and the ultrasonic wave bonding tool at two edges can conveniently move along the transverse position of the fixed shaft, so that the double-layer non-woven fabric embossing wheel and the ultrasonic wave bonding tool can adapt to the pressing welding at two edges of double-layer non-woven fabrics with various widths.

3) The pressing welding quality is stable: the power of the welding head is determined, the embossing wheel is pressed downwards by the air cylinder, the embossing wheel sliding guide rail and the embossing wheel sliding slide block are arranged on the left side and the right side of the embossing wheel respectively, the embossing wheel sliding slide block moves up and down in the embossing wheel sliding guide rail to ensure that the embossing wheel is stably pressed downwards, and the uniform contact stress between all transverse patterns on the embossing wheel and the welding head and the consistent pressing welding are ensured. The rotation of the embossing wheel drives the belt pulley through the material pulling traction roller in front of the pressing welding device and then is driven by the belt on the belt pulley, so that the operation of the embossing wheel and the movement of the non-woven fabric are synchronous. Therefore, the pressing effect is stable and good.

In conclusion, the ultrasonic pressing and welding device provided by the invention is not only suitable for embossing wheels with various patterns, but also can be used for pressing and welding non-woven fabrics with different widths, ensures stable pressing and welding quality, and solves the problem that the existing device cannot realize ultrasonic pressing and welding of double-layer non-woven fabrics.

Drawings

FIG. 1 is a longitudinal cross-sectional view of an ultrasonic ironing welding apparatus according to a preferred embodiment of the present invention;

FIG. 2 is a top view of the ultrasonic ironing welding apparatus shown in FIG. 1;

FIG. 3 is a transverse cross-sectional view of the ironing weld of the ultrasonic ironing welding device shown in FIG. 1;

wherein:

1, a material passing roller; 2, a traction roller; 3, drawing a compression roller; 4 a first pulley; 5, a belt; 6 belt corner wheel; 7 a second pulley; 8, a belt tensioning wheel; 9 a second gear; 10 a first gear; a rear feeding roller; 12 a synchronizing wheel; 13 a pull roll motor; 14 synchronous belts; 15 ultrasonic horn; 16 ultrasonic welding head frame; 17 air cylinders; 18 embossing wheel; 19 a fourth pulley; 20 belts; 21 a third pulley; 22 a rotating shaft; 23, fixing a shaft of the embossing wheel; 24, fixing a shaft by the ultrasonic welding head; 25 traction roller motor switch; 26, a swing arm; 27 the compression roller is pulled to press the adjusting knob downwards; 28 embossing wheel carrier; 29 embossing wheel sliding guides; 30 embossing roller sliding blocks; 31 embossing rollers press and iron welding points; 32 belt tensioning adjusting knobs; 33 a frame; 34 double-layer non-woven fabric; 35 a frame ground leg; 36 a cross cutting machine cutting device; 37 transverse cutting machine emptying device.

Detailed Description

The present invention will be further described with reference to the following specific examples. It should be understood that the following examples are illustrative only and are not intended to limit the scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

Referring to fig. 1, 2 and 3, an ultrasonic press welding device according to a preferred embodiment of the present invention can be disposed between the cross-cutting device 36 and the cross-cutting device discharging device 37.

This ultrasonic wave presses boiling hot welding set includes: the frame 33, a set of front material passing roller 1, a traction roller 2, an embossing wheel carrier 28, an ultrasonic welding head frame 16 and a rear material passing roller 11 which are arranged on the frame 33 in sequence from a transverse cutting machine cutting device 36 to a discharging device 37, and the running direction of the double-layer non-woven fabric 34 is shown as an arrow in figure 1.

Wherein, preceding material roller 1 is provided with the assembly pulley form, includes: eight preceding material rollers 1 of crossing of longitudinal symmetry arrangement, swing arm 26 and four preceding material rollers 1 that are located the below pass through double-deck non-woven fabrics and are connected, and the middle oblique right position of swing arm 26 is fixed through the bearing, and when the left end lifted up, the right-hand member dropped. When the non-woven fabrics of roller 1 department of expecting at present tightened, swing arm 26 right-hand member can be lifted, realizes opening of carry over pinch rolls motor 13 through touching carry over pinch rolls motor switch 25, and carry over pinch rolls motor 13 is passed through synchronizing wheel 12 transmission carry over pinch rolls 2 by hold-in range 14, and the pulling double-deck non-woven fabrics 34 moves ahead. On the contrary, when the non-woven fabric at the position of the material passing roller 1 is loosened, the right end of the swing arm 26 falls to the lowest point, the non-woven fabric is separated from the traction roller motor switch 25, and the traction roller motor 13 stops running. Therefore, the material pulling speed of the front non-woven fabric transverse cutting machine is only required to be adjusted to be matched with the material pulling speed of the traction roller motor 13, the swing arm 26 is guaranteed not to fall to the lowest position during working, the traction roller motor 13 can work all the time, and the double-layer non-woven fabric 34 is pulled to move forwards at a constant speed.

According to the preferred embodiment, the front feeding rollers 1 comprise eight front feeding rollers which are symmetrically arranged up and down, the swing arm 26 is connected with the four front feeding rollers 1 positioned below through double-layer non-woven fabric winding, the moving material is very long when the transverse cutting machine cuts off, and after the swing arm 26 winds the four front feeding rollers in multiple layers, the lifting height of the swing arm 26 is only one eighth of the pulling length; likewise, the swing arm 26 falls a short distance, requiring eight times the distance of the fall to be replenished at the back. After the swing arm 26 is lifted, the right end of the swing arm 26 touches the pull roll motor switch 25, the pull roll motor 13 is started, and then the pull roll 2 is driven to run to pull the material. Therefore, the right end of the swing arm can be ensured to be always in contact with the traction roller motor switch 25 only by adjusting the matching speed of the cutting speed of the transverse cutting machine and the operation speed of the emptying motor (the operation speed of the motor is adjustable), so that the traction roller motor 13 is ensured to operate all the time. It will be appreciated that the intermittent draw of the cross-cut machine is overcome by this structural design.

The traction roller 2 is meshed with a second gear 9 through a first gear 10 on the surface of the traction roller, the second gear 9 is fixed with the first belt pulley 4 in parallel, and the second gear 9 rotates to enable the first belt pulley 4 to rotate; the first belt pulley 4 is connected with the second belt pulley 7 through a belt 5, a corner pulley 6 and a tension pulley 8, so that the second belt pulley 7 runs, and the tension degree of the belt 5 can be adjusted through a belt tension adjusting knob 32; the second belt pulley 7 is arranged on a rotating shaft 22, a third belt pulley 21 is arranged on the rotating shaft 22, the third belt pulley 21 drives a fourth belt pulley 19 through a belt 20, and the fourth belt pulley 19 and the embossing wheel 18 are coaxially fixed. Thus, as long as the traction roller 2 is running, the embossing wheel 18 is running along with it. When the traction roller 2 runs, the traction compression roller 3 pulls the double-layer non-woven fabric passing through the traction roller 2 and the traction compression roller 3 to move forward. The position of the pulling pressure roller 3 can be adjusted by pushing down the adjusting knob 27.

As shown in fig. 3, embossing roller slide blocks 30 and embossing roller slide rails 29 on which the embossing roller slide blocks 30 move are connected to the left and right sides of the embossing roller 18, respectively. The embossing wheel 18 is connected with the air cylinder 17, and the embossing wheel sliding block 30 can move downwards along the embossing wheel sliding guide rail 29 only by starting the air cylinder 17. The cylinder is connected to a specified air pressure, and after ventilation, the cylinder is pressed downwards, and after air supply is cut off, the cylinder is lifted. The cylinder 17 is synchronous with the traction material pulling, the material pulling is not stopped, and the cylinder is always in a ventilation state. A certain pressure is generated between the embossing wheel 18 and the ultrasonic horn 15, and at this time, as long as the ultrasonic wave is turned on, the double-layer non-woven fabric between the embossing wheel 18 and the ultrasonic horn 15 is welded successfully. The embossing roll ironing welds 31 are shown in figure 3.

It will be appreciated that in accordance with the apparatus provided by the present invention, the direction of extension of the press welded edges of the double layer nonwoven is perpendicular to the direction of severing of the nonwoven.

According to the preferred embodiment, the ultrasonic ironing and welding device comprises two sets of embossing wheels 18, an embossing wheel frame 28 and two sets of ultrasonic welding heads 15, 16 which can slide in the horizontal direction.

Referring to fig. 1 and 2, the two embossing rollers 18 and the embossing roller frame 28 are simultaneously mounted on two embossing roller fixing shafts 23 which are mounted in parallel in the vertical direction, and a plane is determined in the vertical direction, so that the embossing rollers 18 are guaranteed to be stably pressed and lifted and move leftwards and rightwards.

Referring to fig. 1 and 2, two sets of ultrasonic welding heads 15 and ultrasonic welding head frames 16 are simultaneously mounted on two ultrasonic welding head fixing shafts 24 which are mounted in parallel in the horizontal direction, two ultrasonic welding head fixing shafts can ensure the fixing level and stability of the ultrasonic welding head frames, while one ultrasonic welding head fixing shaft cannot be stable, the two ultrasonic welding head fixing shafts 24 are mounted in parallel in the front-back horizontal direction, and the ultrasonic welding head frames 16 can move transversely along the two shafts.

Therefore, the embossing wheel frame 28 and the ultrasonic welding head frame 16 can be moved at will in the transverse direction, and the press welding of the non-woven fabrics with different widths can be realized by adjusting the spacing between the embossing wheel frame and the ultrasonic welding head frame.

The bottom of the frame 33 is provided with a frame ground 35.

The above embodiments are merely preferred embodiments of the present invention, which are not intended to limit the scope of the present invention, and various changes may be made in the above embodiments of the present invention. All simple and equivalent changes and modifications made according to the claims and the content of the specification of the present application fall within the scope of the claims of the present patent application. The invention has not been described in detail in order to avoid obscuring the invention.