Ultrasonic sealing device and filling machine

Abstract

The utility model relates to the technical field of ultrasonic sealing, in particular to an ultrasonic sealing device and a filling machine. The ultrasonic sealing device comprises a support, a feeding unit and an ultrasonic welding head unit, wherein the feeding unit and the ultrasonic welding head unit are arranged on the support. Wherein the feeding unit comprises a conveying assembly and a slicing assembly, the conveying assembly is used for conveying welding parts, and the slicing assembly is used for cutting off the welding parts; and the ultrasonic welding head unit instantly generates high temperature through high-frequency vibration, so that the sealing work of a welding piece and a packaging material is completed. According to the ultrasonic sealing device and the filling machine, the sealing effect of welding and sealing a non-metal welding piece on a paper-based composite packaging material can be remarkably improved, so that the sealing performance of liquid packaging is improved, the quality guarantee period of the liquid packaging is prolonged, and food safety is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of ultrasonic sealing, in particular to an ultrasonic sealing device and a filling machine. Background Art

[0002] Non-carbonated liquid foods, such as drinking water, milk and yogurt, and semi-liquid foods, such as juice, are widely packaged and sold in three-dimensional packaging boxes. The packaging boxes for liquid or semi-liquid foods are usually made of paper-based composite packaging materials, which are composed of a multi-layer structure of a paper base layer, a barrier layer, a waterproof layer, and an innermost layer. After the composite packaging material is produced, it is put on a filling machine and undergoes multiple processes such as filling, sealing, and shaping to form a liquid food packaging box. The waterproof layer and the innermost layer in the packaging box are mostly PE layers, and the barrier layer is mostly made of aluminum foil. The sealing technologies used are induction heating and electric heating technologies. The principle of electric heating technology is to convert electrical energy into thermal energy and conduct heat to the product to achieve the effect of heating and sealing. The principle of induction heating technology is to reduce the voltage through a high-frequency power supply, adjust the adapter to a suitable voltage, form an eddy current in the heated area of ​​the product, cause instantaneous high temperature, and complete the effect of heating and sealing. However, aluminum-plastic composite packaging materials are not easy to recycle and reuse, and discarded packaging boxes bring a heavy burden to the environment. In order to avoid environmental pollution and achieve environmentally friendly and sustainable development, it has become an industry trend to use aluminum foil-free packaging materials to prepare packaging boxes. To further reduce plastic consumption, you can also use easy-pull labels with low plastic content to replace plastic packaging covers to close and open packaging boxes. The easy-pull labels can be made of a composite material including barrier materials and fusible materials. The opening is closed by combining with the outermost layer on the outside of the packaging box opening and the inner film on the inside of the packaging box opening. When opening, pull up the easy-pull label to rupture the inner film and open the opening. The resulting problem is that when non-metallic materials are used for aluminum foil-free packaging materials or easy-pull label materials, due to the low thermal conductivity of non-metallic materials, the sealing technology originally suitable for aluminum foil packaging materials cannot quickly transfer the temperature to the outermost material layer of the material to be sealed, so conventional electric heating and induction heating cannot achieve fast and good sealing of non-metallic materials. Utility Model Content

[0003] In view of the above problems, the purpose of the utility model is to provide an ultrasonic sealing device and a filling machine, which can solve the problem of low thermal conductivity of non-metallic materials, and achieve heating and sealing work by instantly generating high temperature through high-frequency vibration.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] One aspect of the utility model provides an ultrasonic sealing device, comprising a bracket and a feeding unit and an ultrasonic horn unit arranged on the bracket; wherein the feeding unit comprises a conveying component and a slicing component, the conveying component is used for conveying the welded part, and the slicing component is used for cutting the welded part; the ultrasonic horn unit seals the welded part and the packaging material.

[0006] In a possible implementation, the conveying assembly includes a conveying base, and a transfer conveying wheel assembly and a main conveying assembly disposed on the conveying base;

[0007] The main conveying assembly includes a main conveying wheel assembly and a one-way damping wheel assembly which are arranged in parallel and close to each other. The welded parts conveyed by the transfer conveying wheel assembly enter between the main conveying wheel assembly and the one-way damping wheel assembly and are conveyed forward by the rotation of the main conveying wheel assembly.

[0008] In a possible implementation, the main transmission wheel assembly includes a motor, a transmission shaft and a main transmission wheel, wherein the transmission shaft is rotatably disposed on the transmission base, the main transmission wheel is sleeved on the transmission shaft and rotates synchronously with the transmission shaft; the motor is disposed on the transmission base, and the output end is connected to the transmission shaft.

[0009] In a possible implementation, the one-way damping wheel assembly includes a one-way damping wheel, a one-way damping wheel fixing plate and a connecting rod, wherein the one-way damping wheel is rotatably mounted on the one-way damping wheel fixing plate, the one-way damping wheel fixing plate is connected to the transmission base through a connecting rod, and the one-way damping wheel is close to the main transmission wheel.

[0010] In a possible implementation, the one-way damping wheel assembly also includes a tension spring I, one end of which is connected to the connecting rod, and the other end is connected to the transmission base. The tension spring I keeps the one-way damping wheel and the main transmission wheel in a compressed state at all times.

[0011] In a possible implementation, the slicing assembly includes a fixed knife, a movable knife, a cutting cylinder, a fixed knife seat and a movable knife seat, wherein the fixed knife seat is connected to the conveying base via a floating connection assembly, and the fixed knife is arranged on the fixed knife seat;

[0012] The cutting cylinder is arranged on the bracket, and the output end is connected to the moving knife seat. The moving knife is arranged on the moving knife seat and corresponds to the fixed knife. The cutting cylinder is used to drive the moving knife to cooperate with the fixed knife to cut the weldment.

[0013] In a possible implementation, the floating connection assembly includes a rotating shaft and a tension spring II, wherein the rotating shaft passes through the fixed knife seat, and both ends of the rotating shaft are rotatably connected to the transmission base;

[0014] One end of the tension spring II is connected to the rotating shaft, and the other end is connected to the transmission base. The tension spring II enables the fixed knife to be in full contact with the extended movable knife through elastic force.

[0015] In a possible implementation, the ultrasonic horn unit includes an ultrasonic horn, a welding cylinder and a base, wherein the base is arranged on the bracket, and the welding cylinder is arranged on the base;

[0016] The ultrasonic welding head includes a welding head, a welding head bracket and a transducer, wherein the welding head bracket is arranged at the output end of the welding cylinder, the transducer is arranged on the welding head bracket and connected to the welding head, the welding head is arranged opposite to the slicing assembly, and the welding head has a protruding structure that matches the punching hole on the packaging material.

[0017] In a possible implementation, the bracket is a U-shaped structure, and the feeding unit and the ultrasonic horn unit are respectively disposed at two ends of the bracket.

[0018] Another aspect of the present invention provides a filling machine, the filling machine comprising the ultrasonic sealing device as described in any one of the above items.

[0019] The advantages and beneficial effects of the utility model are as follows: welding parts such as pull-tabs can be prepared from composite materials including resin or plastic material layers, and have a flat sheet structure. The pull-tabs are sealed and fixed at the opening of the packaging material, and the packaging box can be opened by tearing off the pull-tabs, which can greatly reduce the amount of plastic used compared to plastic packaging covers. Aluminum foil-free packaging materials can significantly reduce the cost of recycling waste packaging materials, but when the pull-tabs are sealed on non-metallic packaging materials without aluminum foil, there is a problem that the pull-tabs and the non-metallic packaging materials are not tightly sealed due to the low thermal conductivity of the non-metallic packaging materials. The ultrasonic sealing device provided by the utility model can generate high temperature instantly through high-frequency vibration of the ultrasonic sealing device, and can firmly seal the continuously provided pull-tabs and other welding parts at the opening position of the packaging material coil and cut them off, thereby achieving efficient sealing of the aluminum foil-free packaging material and the new opening structure of the pull-tabs, and significantly improving the sealing quality of the product.

[0020] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by implementing the utility model. The purpose and other advantages of the utility model can be realized and obtained by the structures particularly pointed out in the written description and the drawings.

[0021] The technical solution of the utility model is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0023] Figure 1 This is a schematic structural diagram of an ultrasonic sealing device of the utility model;

[0024] Figure 2 It is a structural schematic diagram of the transmission component in the utility model;

[0025] Figure 3 It is a structural schematic diagram of the slicing component in the utility model;

[0026] Figure 4 It is a structural schematic diagram of the ultrasonic welding head unit in the utility model;

[0027] Figure 5 A schematic diagram of the working state of an ultrasonic sealing device provided by the utility model;

[0028] In the figure: 1, welding part, 2, transfer conveying wheel assembly, 3, slicing assembly, 4, ultrasonic assembly, 5, support, 6, main conveying assembly, 7, motor, 8, one-way damping wheel, 9, fixed knife, 10, moving knife, 11, conveying base, 12, transmission shaft, 13, main conveying wheel, 14, one-way damping wheel fixing plate, 15, rotating wheel, 16, connecting rod, 17, cutting cylinder, 18, fixed knife seat, 19, rotating shaft, 20, moving knife seat, 21 welding head, 22, welding head bracket, 23, transducer, 24, welding cylinder, 25, base, 26, tension spring I, 27, tension spring II, 28, packaging material. DETAILED DESCRIPTION

[0029] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0030] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0031] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0033] An ultrasonic sealing device provided in one embodiment of the utility model converts vibration energy into heat energy in a frictional manner, melts the PE plastic layer on the surface of the material to be sealed, and completes the sealing by contact pressure. Figure 1 , Figure 5As shown, the ultrasonic sealing device includes a bracket 5 and a feed unit and an ultrasonic horn unit 4 arranged on the bracket 5; wherein the feed unit includes a conveying assembly and a slicing assembly 3 arranged above and below, the conveying assembly is used to convey the weldment 1, and the slicing assembly 3 is used to cut the weldment 1; the ultrasonic horn unit 4 is used to seal the weldment 1 with the PE layer on the packaging material 28, the packaging material 28 is a paper-based composite packaging material, which mainly includes the innermost layer, the paper base layer, the printing layer and the waterproof layer from the inside to the outside, the waterproof layer is the outermost layer, and the waterproof layer and the innermost layer are generally thermoplastic resins, preferably polyolefins, such as polyethylene (PE). The packaging material 28 is commonly used for liquid beverage or food packaging, and the packaging material 28 is pre-set with an opening, and the liquid beverage can flow out of the opening after opening. Before the liquid is filled, the opening needs to be sealed. The traditional method is to form a packaging cover by injection molding at the opening position. The packaging cover is generally made of thermoplastic material, the packaging cover is large in size, and a large amount of plastic is required to be prepared, which is easy to cause pollution to the environment. In order to reduce the amount of plastic used, a relatively thin sheet welding piece is used to seal the opening. The welding piece 1 can be a pull-tab or other material that needs to be sealed. The pull-tab generally adopts a composite structure including a barrier material and a thermoplastic material. The barrier material can be a non-metallic material, such as a barrier paper with good barrier properties. The thermoplastic material layer can be polyethylene, polypropylene, etc. By only compounding the thermoplastic material layer on one side or both sides of the barrier paper, the amount of plastic used in liquid packaging can be significantly reduced. However, conventional electric heating and induction heating methods are only applicable to the sealing of packaging materials and welding pieces containing metal material layers. The ultrasonic welding head unit used in this application is particularly suitable for the sealing of packaging materials and non-metallic welding pieces that do not contain metal layers. The ultrasonic welding head unit heats up the thermoplastic material layer at the sealing point of the packaging material and the welding piece through high-frequency vibration and fuses them together, so that the side of the welding piece 1 with the thermoplastic resin layer is used as the sealing surface to be sealed with the PE layer of the packaging material.

[0034] In the embodiment of the utility model, the bracket 5 is a U-shaped structure, and the feeding unit and the ultrasonic horn unit 4 are respectively arranged at two ends of the bracket 5 .

[0035] See also Figure 1 As shown, in the embodiment of the utility model, the transmission assembly includes a transmission base 11 and a transfer conveying wheel assembly 2 and a main transmission assembly 6 arranged on the transmission base 11; the transmission base 11 is connected to the bracket 5. In this embodiment, the main transmission assembly 6 includes a main transmission wheel assembly and a one-way damping wheel assembly arranged in parallel and close to each other. The weldment 1 transported by the transfer conveying wheel assembly 2 enters between the main transmission wheel assembly and the one-way damping wheel assembly, and is transmitted forward by the rotation of the main transmission wheel assembly.

[0036] See also Figure 1 , Figure 2As shown, in the embodiment of the utility model, the main transmission wheel assembly includes a motor 7, a transmission shaft 12 and a main transmission wheel 13, wherein the transmission shaft 12 is rotatably arranged on the transmission base 11, and the main transmission wheel 13 is sleeved on the transmission shaft 12 and rotates synchronously with the transmission shaft 12; the motor 7 is arranged on the transmission base 11, and the output end is connected to the transmission shaft 12. The one-way damping wheel assembly includes a one-way damping wheel 8, a one-way damping wheel fixing plate 14 and a connecting rod 16, wherein the one-way damping wheel 8 is rotatably mounted on the one-way damping wheel fixing plate 14, the one-way damping wheel fixing plate 14 is connected to the transmission base 11 through the connecting rod 16, and the one-way damping wheel 8 is close to the main transmission wheel 13. The motor 7 drives the transmission shaft 12 and the main transmission wheel 13 to rotate, thereby driving the weldment 1 clamped between the one-way damping wheel 8 and the main transmission wheel 13 to be transported downward.

[0037] Furthermore, the one-way damping wheel assembly also includes a tension spring Ⅰ26, one end of which is connected to the connecting rod 16, and the other end is connected to the transmission base 11. The tension spring Ⅰ26 keeps the one-way damping wheel 8 and the main transmission wheel 13 in a compressed state at all times.

[0038] When the motor 7 rotates, it drives the transmission shaft 12 and the main transmission wheel 13 to rotate. The one-way damping wheel 8 and the main transmission wheel 13 always maintain a certain clamping force to prevent the weldment 1 from shrinking. The clamping state of the one-way damping wheel 8 is mainly tightened by the tension spring Ⅰ26.

[0039] See also Figure 1 , Figure 2 As shown, in the embodiment of the utility model, the transfer conveying wheel assembly 2 includes two rotating wheels 15 rotatably mounted on the conveying base 11, and the axes of the two rotating wheels 15 are parallel to each other, ensuring that the tension on the left and right sides of the welded part 1 is consistent and the conveying is stable. Furthermore, the rotating wheel 15 is a stepped shaft structure with a thin middle and thick ends, which prevents the welded part 1 from falling off the rotating wheel 15.

[0040] See also Figure 3 As shown, in the embodiment of the utility model, the slicing assembly 3 includes a fixed knife 9, a movable knife 10, a cutting cylinder 17, a fixed knife seat 18 and a movable knife seat 20, wherein the fixed knife seat 18 is connected to the conveying base 11 through a floating connection assembly, and the fixed knife 9 is arranged on the fixed knife seat 18; the cutting cylinder 17 is arranged on the bracket 5, and the output end is connected to the movable knife seat 20, and the movable knife 10 is arranged on the movable knife seat 20 and corresponds to the position of the fixed knife 9; the cutting cylinder 17 is used to drive the movable knife 10 to approach or move away from the fixed knife 9, thereby realizing the cutting function of the weldment 1.

[0041] See also Figure 1 , Figure 3As shown, in the embodiment of the utility model, the floating connection assembly includes a rotating shaft 19 and a tension spring II 27, wherein the rotating shaft 19 is fixedly connected to the fixed knife seat 18, and both ends of the rotating shaft 19 are rotatably connected to the conveying base 11; one end of the tension spring II 27 is connected to the rotating shaft 19, and the other end is connected to the conveying base 11, and the tension spring II 27 makes the fixed knife 9 fully contact with the extended movable knife 10 through elastic force.

[0042] See also Figure 4 As shown, in the embodiment of the utility model, the ultrasonic horn unit 4 includes an ultrasonic horn, a welding cylinder 24 and a base 25, wherein the base 25 is arranged on the bracket 5, and the welding cylinder 24 is arranged on the base 25; the ultrasonic horn includes a horn 21, a horn bracket 22 and a transducer 23, wherein the horn bracket 22 is arranged at the output end of the welding cylinder 24, the transducer 23 is arranged on the horn bracket 22 and connected to the horn 21, the horn 21 is arranged opposite to the slicing assembly 3, and the horn 21 has a convex structure that matches the punching hole on the packaging material 28. The structure of the horn 21 can change the shape of the horn according to the hole shape requirements of the packaging material, and the material and frequency of the horn can be replaced and adjusted according to the heated product.

[0043] See also Figures 1 to 5 As shown, an ultrasonic sealing device provided by an embodiment of the utility model has the following working principle:

[0044] When the packaging material 28 reaches the designated position, the conveying assembly conveys the welded part 1 forward, the cutting cylinder 17 extends, and the welded part 1 is cut off; at the same time, the welding cylinder 24 extends, and the ultrasonic welding head generates high temperature instantly through high-frequency vibration, completing the heating and sealing work of the welded part 1 and the PE film on the packaging material 28. In this process, because the welding head 21 has a boss structure, which matches the size of the punching hole on the packaging material 28, the boss part preferentially contacts the PE film, completing the sealing of the welded part 1 and the PE film, and the outer part of the punching hole also completes the sealing action. When the color-coded electric eye in the equipment detects that the packaging material 28 is in place, the pneumatic valve island controls the feeding unit and the welding cylinder 24 to complete the action sequence. The ultrasonic welding head converts the 220V power supply into 20kHz or 40kHz high-voltage electric energy, which is converted into mechanical energy by the transducer. The mechanical vibration is amplified by the amplitude modulator and transmitted to the sealed part through the welding head 21, so that the joint surfaces of the two workpieces are melted after intense friction, and the gluing process is completed instantly. Aluminum-free packaging materials do not contain aluminum foil in the synthesis of packaging materials. The purpose of this is to increase the environmental friendliness and recyclability of the packaging materials.

[0045] An ultrasonic sealing device provided by an embodiment of the utility model improves the sealing quality. The welding head structure can change the shape of the welding head according to the hole shape requirements of the packaging material, and the material and frequency of the welding head can be replaced and adjusted according to the heated product.

[0046] Another embodiment of the utility model provides a filling machine, which includes the ultrasonic sealing device as described in any of the above embodiments. The filling machine generates high temperature instantly by high-frequency vibration of the ultrasonic sealing device, and can firmly seal the continuously provided easy-pull stickers and other welding parts at the opening position of the packaging material coil and cut them off, so as to achieve efficient sealing of the aluminum foil-free packaging material and the new opening structure of the easy-pull sticker, and significantly improve the sealing quality of the liquid packaging product, thereby extending the packaging period and ensuring food safety.

[0047] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. Ultrasonic sealing device, characterized in that: The invention comprises a support (5), and a feed unit and an ultrasonic horn unit (4) arranged on the support (5); wherein the feed unit comprises a conveying component and a slicing component (3), wherein the conveying component is used for conveying the welded part, and the slicing component (3) is used for cutting the welded part; and the ultrasonic horn unit (4) is used for sealing the welded part and the packaging material.

2. The ultrasonic sealing device according to claim 1, characterized in that: The conveying assembly comprises a conveying base (11), a transfer conveying wheel assembly (2) and a main conveying assembly (6) arranged on the conveying base (11); The main transmission assembly (6) comprises a main transmission wheel assembly and a one-way damping wheel assembly which are arranged in parallel and close to each other. The welded parts transported by the transfer transmission wheel assembly (2) enter between the main transmission wheel assembly and the one-way damping wheel assembly and are transported by the rotation of the main transmission wheel assembly.

3. The ultrasonic sealing device according to claim 2, characterized in that: The main transmission wheel assembly comprises a motor (7), a transmission shaft (12) and a main transmission wheel (13), wherein the transmission shaft (12) is rotatably arranged on the transmission base (11), and the main transmission wheel (13) is sleeved on the transmission shaft (12) and rotates synchronously with the transmission shaft (12); the motor (7) is arranged on the transmission base (11), and the output end of the motor (7) is connected to the transmission shaft (12).

4. The ultrasonic sealing device according to claim 2, characterized in that: The one-way damping wheel assembly comprises a one-way damping wheel (8), a one-way damping wheel fixing plate (14) and a connecting rod (16), wherein the one-way damping wheel (8) is rotatably mounted on the one-way damping wheel fixing plate (14), the one-way damping wheel fixing plate (14) is connected to the transmission base (11) via the connecting rod (16), and the one-way damping wheel (8) is in close contact with the main transmission wheel (13).

5. The ultrasonic sealing device according to claim 4, characterized in that: The one-way damping wheel assembly also includes a tension spring I (26), one end of which is connected to the connecting rod (16), and the other end of which is connected to the transmission base (11); the tension spring I (26) keeps the one-way damping wheel (8) and the main transmission wheel (13) pressed together at all times.

6. The ultrasonic sealing device according to claim 2, characterized in that: The slicing assembly (3) comprises a fixed knife (9), a movable knife (10), a cutting cylinder (17), a fixed knife seat (18) and a movable knife seat (20), wherein the fixed knife seat (18) is connected to the conveying base (11) via a floating connection assembly, and the fixed knife (9) is arranged on the fixed knife seat (18); The cutting cylinder (17) is arranged on the bracket (5), and its output end is connected to the movable knife seat (20); the movable knife (10) is arranged on the movable knife seat (20), and its position corresponds to the fixed knife (9); the cutting cylinder (17) is used to drive the movable knife (10) to cooperate with the fixed knife (9) to cut the welded part.

7. The ultrasonic sealing device according to claim 6, characterized in that: The floating connection assembly comprises a rotating shaft (19) and a tension spring II (27), wherein the rotating shaft (19) passes through the fixed knife seat (18), and both ends of the rotating shaft (19) are rotatably connected to the transmission base (11); One end of the tension spring II (27) is connected to the rotating shaft (19), and the other end is connected to the conveying base (11). The tension spring II (27) enables the fixed knife (9) to be in full contact with the extended movable knife (10).

8. The ultrasonic sealing device according to claim 1, characterized in that: The ultrasonic horn unit (4) comprises an ultrasonic horn, a welding cylinder (24) and a base (25), wherein the base (25) is arranged on the bracket (5), and the welding cylinder (24) is arranged on the base (25); The ultrasonic welding head comprises a welding head (21), a welding head bracket (22) and a transducer (23), wherein the welding head bracket (22) is arranged at the output end of the welding cylinder (24), the transducer (23) is arranged on the welding head bracket (22) and connected to the welding head (21), the welding head (21) is arranged opposite to the slicing assembly (3), and the welding head (21) has a protruding structure that matches the punching hole on the packaging material.

9. The ultrasonic sealing device according to claim 1, characterized in that: The support (5) is a U-shaped structure, and the feeding unit and the ultrasonic horn unit (4) are respectively arranged at two ends of the support (5).

10. A filling machine, characterized in that: The filling machine comprises the ultrasonic sealing device according to any one of claims 1 to 9.

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