Welding and cutting integrated mechanism and composite material integrated ultrasonic sealing and cutting device

Abstract

This invention discloses an integrated ultrasonic sealing and cutting device and its process for composite materials. The device includes: an integrated welding and cutting mechanism for welding and sealing at least three layers of flexible material, comprising a welding head and a mold roller opposite to the welding head. The outer circumference of the mold roller is provided with a sealing and cutting blade matching the shape of the product. The sealing and cutting blade includes a protruding cutting edge and a welding part disposed on the side of the cutting edge, the welding part transitioning in an arc shape from the cutting edge to the extension of the sealing and cutting blade; and a negative pressure separation and conveying mechanism disposed downstream of the integrated welding and cutting mechanism for separating the product, comprising a negative pressure transfer roller opposite to the mold roller and a conveying component disposed below the negative pressure transfer roller. The device and process provided by this invention can simultaneously weld and cut multiple products, improving production efficiency.

Description

Technical Field

[0001] This invention relates to the field of flexible material composite technology, and in particular to an integrated welding and cutting mechanism, an integrated ultrasonic sealing and cutting device for composite materials, and their process. Background Technology

[0002] In the production of flexible composite materials (such as lozenges, medical dressings, and menthol products), it is typically necessary to laminate at least three layers of material (an upper nonwoven fabric, a middle functional layer, and a lower nonwoven fabric) and then cut them into individual sheets. In traditional processes, lamination, edge sealing, and slitting are often performed in separate steps, potentially involving multiple processes and devices such as heat sealing, adhesive bonding, and mechanical cutting. This multi-step separation process suffers from drawbacks such as low efficiency, large equipment footprint, high alignment accuracy requirements between different processes, and potential environmental or safety issues due to the use of adhesives. Furthermore, ensuring neat separation and stable transport of the cut sheets during high-speed continuous production, preventing stacking and roller sticking, is also a significant technical challenge. Summary of the Invention

[0003] Based on the above problems, the purpose of this invention is to provide an integrated welding and cutting mechanism and an integrated ultrasonic sealing and cutting device for composite materials, which integrates the two processes of edge sealing and single-piece cutting of flexible composite materials into one station to complete them at one time, so as to improve production efficiency and ensure sealing quality.

[0004] To overcome the shortcomings of the prior art, one of the technical solutions provided by the present invention is:

[0005] A welding and cutting integrated mechanism is used to weld and cut at least three layers of flexible material. It includes a welding head and a mold roller disposed opposite to the welding head. The outer circumferential surface of the mold roller is provided with a sealing and cutting blade that matches the shape of the product. The sealing and cutting blade includes a protruding cutting edge and a welding part disposed on the side of the cutting edge and having a radial height difference with the cutting edge. The welding part continuously transitions from the cutting edge to the outer extension of the sealing and cutting blade.

[0006] In one embodiment, the width of the cutting edge is 0.01 to 0.1 mm, and the width of the welded portion is 0.2 to 0.8 mm.

[0007] In one embodiment, the thickness of the flexible material in the upper and lower layers is 0.05 to 0.5 mm, and the thickness of the flexible material in the middle layer is 0.05 to 1 mm.

[0008] In one embodiment, the outer peripheral surface of the mold roller is provided with a plurality of first ventilation holes, which are located within the area enclosed by the sealing and cutting blade and are connected to a first negative pressure source via a first negative pressure interface.

[0009] In one embodiment, a first air blowing interface is provided at the unloading position of the mold roller, and when the first air vent rotates to the position of the first air blowing interface, it communicates with the first air blowing source.

[0010] In one embodiment, the mold roller is provided with a cooling module for suppressing the volatilization of the intermediate layer material of the flexible material. The cooling module includes a cooling pipe disposed inside the mold roller, a liquid inlet pipe connected to the cooling pipe, and a cooling medium connected to the liquid inlet pipe.

[0011] In one embodiment, the cooling conduit includes a cooling cavity arranged circumferentially along the mold roller and an inlet / outlet liquid cavity communicating with the cooling cavity, the inlet / outlet liquid cavity extending axially along the mold roller;

[0012] The liquid inlet pipe passes through the liquid inlet and outlet chambers. The inner end of the liquid inlet pipe is sealed and the outer end is the water inlet end. The liquid inlet pipe has multiple liquid inlet holes in the circumference near the sealed end, which connect to the liquid inlet and outlet chambers. One end of the cooling chamber is connected to the liquid inlet and outlet chambers through multiple first connecting holes, and the other end of the cooling chamber is connected to the liquid inlet and outlet chambers through multiple second connecting holes.

[0013] In one embodiment, the inlet pipe is supported within the inlet / outlet chamber by a support block, which divides the inlet / outlet chamber into an outlet chamber and an inlet chamber arranged from the outside in.

[0014] In one embodiment, the sealing and cutting blades are arranged in an array along the axial direction of the mold roller on the outer peripheral surface of the mold roller. They can be in the form of a grid, a circle, or other shapes.

[0015] To overcome the shortcomings of the prior art, the second technical solution provided by this invention is:

[0016] An integrated ultrasonic sealing and cutting device for composite materials includes the welding and cutting integrated mechanism described in any one of the above.

[0017] In one embodiment, a negative pressure separation conveying mechanism is also included, which is disposed downstream of the welding and cutting integrated mechanism for separating the product, including a negative pressure transfer roller disposed opposite to the mold roller and a conveying component disposed below the negative pressure transfer roller.

[0018] In one embodiment, the outer circumferential surface of the negative pressure transfer roller is provided with a plurality of second vent holes, and the roller also includes a second negative pressure interface disposed at a position corresponding to the negative pressure transfer roller and the mold roller. When the second vent hole rotates to the second negative pressure interface, it is connected to the second negative pressure source.

[0019] In one embodiment, a second air blowing interface is provided at the position corresponding to the negative pressure transfer roller and the conveying component, and when the second air hole rotates to the second air blowing interface, it is connected to the second air blowing source.

[0020] Compared with the prior art, the advantages of the present invention are:

[0021] 1. High efficiency and high quality edge sealing: Through the integrated ultrasonic sealing and cutting design, the sealing and cutting processes are combined, which greatly improves the production cycle. Ultrasonic sealing does not require adhesives, and the edge sealing is firm, uniform, and free of chemical residues. Moreover, sealing and cutting are completed simultaneously, with extremely high alignment accuracy. The shape of the sealing and cutting blade on the mold roller makes the product sealing and cutting area gradually smaller and narrower from the cut position, which is especially suitable for products that require soft edge sealing.

[0022] 2. High stability and anti-stacking: The mold roller integrates a water cooling system, which effectively solves the problem of heat accumulation caused by high-speed continuous sealing and cutting, ensuring the stability of the equipment during long-term operation and the life of the mold. At the same time, it inhibits the volatilization of the intermediate layer of flexible material and improves product quality. The negative pressure adsorption holes on the surface of the mold roller can immediately adsorb the product after sealing and cutting, ensuring that the product transfer process is flat and does not shift. In conjunction with the downstream negative pressure separation conveying mechanism, it effectively solves the problems of product stacking, falling or poor conveying at high speed.

[0023] 3. Good process adaptability: This device is particularly suitable for functional composite materials with soft, brittle, or protective films in the middle layer. For special materials, stable sealing and cutting can be achieved by adjusting parameters such as ultrasonic power, pressure, and mold pattern.

[0024] 4. Since the products are arranged in a fixed array (e.g., 10 pieces per row) and precisely separated on the mold roller, it provides excellent preconditions for downstream robots or manipulators to perform fixed-number grasping (e.g., grasping two rows of 20 pieces each time), which facilitates the realization of full-process automation. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of an embodiment of the composite material integrated ultrasonic sealing and cutting device of the present invention;

[0027] Figure 2 This is a schematic cross-sectional view of the mold roller in an embodiment of the present invention;

[0028] Figure 3 for Figure 2 Enlarged view of a portion of point A in the middle;

[0029] Figure 4 for Figure 2 Enlarged view of a section at point B in the middle;

[0030] Figure 5 This is a schematic diagram of the cooling cavity structure in an embodiment of the present invention;

[0031] Figure 6 This is one of the structural schematic diagrams of the mold roller (including the first air distribution plate) in an embodiment of the present invention;

[0032] Figure 7 for Figure 6 Enlarged view of a section at point C;

[0033] Figure 8 This is a schematic diagram of the sealing and cutting blade in an embodiment of the present invention;

[0034] Figure 9 This is a second schematic diagram of the structure of the mold roller in an embodiment of the present invention;

[0035] Figure 10 This is one of the structural schematic diagrams of the mold roller and the negative pressure transfer roller in an embodiment of the present invention;

[0036] Figure 11 This is a second schematic diagram of the structure of the mold roller and the negative pressure transfer roller in an embodiment of the present invention;

[0037] in:

[0038] 1. Mold roller; 1-1. Sealing and cutting blade; 1-1a. Blade edge; 1-1b. Welding part; 1-2. First vent hole; 1-3. First channel; 1-4. Cooling chamber; 1-5. Liquid inlet chamber; 1-6. First connecting hole; 1-7. Liquid inlet pipe; 1-7a. Liquid inlet hole; 1-8. Liquid outlet chamber; 1-9. Second connecting hole; 1-10. Support block; 1-11. Rotary joint; 1-11a. Water inlet; 1-11b. Water outlet;

[0039] 2. Welding head;

[0040] 3. Negative pressure transfer roller; 3-1. Second vent; 3-2. Second perforation;

[0041] 4. Conveying components;

[0042] 5. First guide roller;

[0043] 6. Second guide roller;

[0044] 7. Third guide roller;

[0045] 8. Fourth guide roller;

[0046] 9. Waste collection roller assembly;

[0047] 10. Roller pass;

[0048] 11. Waste materials;

[0049] 12. First valve distribution plate;

[0050] 13. Second valve distribution plate;

[0051] 100. First layer of material;

[0052] 200. Intermediate layer material; 201. Protective film;

[0053] 300. Third layer material. Detailed Implementation

[0054] The above-described solution will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. The implementation conditions used in the embodiments may be further adjusted according to the conditions of specific manufacturers, and the implementation conditions not specified are generally those in routine experiments.

[0055] Example 1

[0056] like Figure 1 The diagram shown is a structural schematic of an embodiment of the present invention, which provides an integrated ultrasonic sealing and cutting device for composite materials, including an integrated welding and cutting mechanism and a negative pressure separation and conveying mechanism. After multiple products are obtained by welding and cutting processes in the integrated welding and cutting mechanism, the multi-layer flexible composite material is separated from the waste material at the position of the negative pressure separation and conveying mechanism.

[0057] The integrated welding and cutting mechanism is used to weld and cut three layers of flexible material, including a first layer (non-woven fabric) 100, a middle layer (functional layer) 200, and a third layer (non-woven fabric) 300. The thicknesses of the first and third layers 100 and 300 are 0.05–0.5 mm, the thickness of the middle layer 200 is 0.05–1 mm, and the total thickness of the product is less than 2 mm. The middle layer 200 contains volatile substances, such as volatile natural plant extracts, traditional Chinese medicine formulas, prebiotics, vitamins, and other active substances. In this example, the thicknesses of the first layer (non-woven fabric) 100, the middle layer (functional layer) 200, and the third layer (non-woven fabric) 300 are 0.13 mm, 0.16 mm, and 0.14 mm, respectively.

[0058] The welding and cutting integrated mechanism includes a welding head 2 and a mold roller 1 disposed opposite to the welding head 2. The mold roller 1 is rotatably mounted on the frame. A sealing and cutting blade 1-1 matching the shape of the product is provided on the outer circumferential surface of the mold roller 1. The sealing and cutting blade 1-1 includes a protruding cutting edge 1-1a and a welding part 1-1b disposed on the side of the cutting edge 1-1a and having a radial height difference with the cutting edge. The welding part 1-1b continuously transitions from the cutting edge 1-1a to the outer extension of the sealing and cutting blade 1-1. In this example, it is a convex arc transition. In other ways, it can also be a concave arc transition or a diagonal transition.

[0059] like Figure 7 and Figure 8 As shown, the width of the cutting edge 1-1a is 0.01 to 0.1 mm and transitions with the outer circumference of the mold roller 1 via an inclined surface. The width of the welding part 1-1b is 0.2 to 0.8 mm and transitions with the outer circumference of the mold roller 1 via an inclined surface. It should be understood that in actual production, the width of the cutting edge 1-1a and the welding part 1-1b can be adjusted according to product requirements. The welding part 1-1b can be set as an arc shape. Compared with the conventional flat edge sealing in the prior art, the edge sealing area of ​​the product gradually softens from the cut position and has a smaller width, which is particularly suitable for welding and cutting small products such as lozenges.

[0060] like Figure 6 and Figure 9 As shown, the sealing and cutting blades 1-1 are arranged in a rectangular array on the outer peripheral surface of the mold roller 1. The range of each rectangle is the forming range of a product. Adjacent rectangular products share the horizontal or vertical sealing and cutting blades 1-1. In other embodiments, the sealing and cutting blades 1-1 can be an array adapted to other shaped products (such as circles, polygons or other shapes), and the products may not share the sealing and cutting blades.

[0061] To facilitate stable fixation of the product, a number of first ventilation holes 1-2 are provided on the outer peripheral surface of the mold roller 1. These first ventilation holes 1-2 are arranged in an array on the outer peripheral surface of the mold roller 1 and are located in the area enclosed by the sealing and cutting blades 1-1. Each first ventilation hole 1-2 extends to the outer peripheral surface of the mold roller 1 along the radial portion of the mold roller 1. At the same time, a number of first holes 1-3 communicating with the first ventilation holes 1-2 are provided on the axial end face of the mold roller 1. A first air distribution plate 12 is provided in the axial direction of the mold roller 1. The first air distribution plate 12 is provided with a first negative pressure interface in the area where the composite material is welded and cut. The first ventilation holes 1-2 in the area where the composite material is welded and cut can be connected to a first negative pressure source through the first negative pressure interface. In this way, the multilayer composite material can be adsorbed by negative pressure on the outer peripheral surface of the mold roller 1, ensuring that the product transfer process is stable and does not shift.

[0062] In order to facilitate the cooling of the high-speed rotating mold roller 1 and suppress the volatilization of the intermediate layer material 200 in the composite material, and ensure the quality of the welded products, a cooling module is provided on the mold roller 1. The cooling module includes a cooling pipe installed inside the mold roller 1, an inlet pipe 1-7 connected to the cooling pipe, and a cooling medium connected to the inlet pipe 1-7. The cooling medium (such as cooling water) is introduced into the cooling pipe to cool the roller body of the mold roller 1.

[0063] like Figures 2 to 5 As shown, the cooling pipe includes a cooling cavity 1-4 arranged circumferentially along the mold roller 1 and an inlet / outlet liquid cavity communicating with the cooling cavity 1-4. The inlet / outlet liquid cavity extends axially along the mold roller 1 and extends to one end of the support shaft of the mold roller 1. In this example, the cooling cavity 1-4 is arranged in a ring inside the mold roller 1 and extends along the length direction of the mold roller 1.

[0064] The inlet pipe 1-7 passes through the inlet and outlet chambers. The inner end of the inlet pipe 1-7 is sealed and the outer end is the water inlet. Four inlet holes 1-7a are provided around the inlet pipe 1-7 near the sealed end, which are connected to the inlet and outlet chambers. One end of the cooling chamber 1-4 is connected to the inlet and outlet chambers through multiple first connecting holes 1-6, and the other end of the cooling chamber 1-4 is connected to the inlet and outlet chambers through multiple second connecting holes 1-9. Thus, cooling water enters the inlet pipe 1-7 through the water inlet 1-11a of the rotary joint 1-11, and then enters the inlet and outlet chambers through the inlet holes 1-7a. After that, it enters one end of the cooling chamber 1-4 through the first connecting hole 1-6, and then enters the inlet and outlet chambers through the second connecting hole 1-9 from the other end of the cooling chamber 1-4, and is discharged through the water outlet 1-11b on the rotary joint 1-11.

[0065] To further optimize the cooling effect of the mold roller, two separate liquid outlet chambers 1-8 and 1-5 are formed between the liquid inlet pipe 1-7 and the liquid outlet chamber. Specifically, the outer wall of the liquid inlet pipe 1-7 is fixed to the inner wall of the liquid outlet chamber by a support block 1-10, which divides the liquid outlet chamber into the liquid outlet chamber 1-8 and the liquid inlet chamber 1-5 arranged from the outside to the inside.

[0066] To facilitate the inlet and outlet of liquid in the mold roller 1, a rotary joint 1-11 is provided at one end of the support shaft of the mold roller 1 where the liquid inlet pipe 1-7 is installed. The water inlet 1-11a and the water outlet 1-11b on the rotary joint 1-11 are respectively connected to the liquid inlet pipe 1-7 and the liquid outlet chamber 1-8 to ensure the cooling effect of the mold roller 1 in the rotating state.

[0067] A negative pressure separation and conveying mechanism, located downstream of the integrated welding and cutting mechanism, is used to separate welded products. It includes a negative pressure transfer roller 3 positioned opposite the mold roller 1 and a conveying component 4 positioned below the negative pressure transfer roller 3. The negative pressure transfer roller 3 draws the welded and cut products from the mold roller 1 under negative pressure and releases them onto the conveying component 4 for output. The conveying component 4 utilizes a negative pressure conveyor belt, a technology already in use, ensuring stable product output.

[0068] like Figure 10 and Figure 11 As shown, the outer circumferential surface of the negative pressure transfer roller 3 is provided with a plurality of second vent holes 3-1, and the axial end face of the negative pressure transfer roller 3 is provided with a plurality of second holes 3-2 communicating with the second vent holes 3-1. The negative pressure transfer roller 3 is provided with a second negative pressure interface at the corresponding position of the mold roller 1. Specifically, a second air distribution plate 13 is fixedly provided at both axial ends of the negative pressure transfer roller 3, and a second negative pressure interface is provided on the second air distribution plate 13. When the second vent hole 3-1 rotates to the position of the second negative pressure interface, it is connected to the second negative pressure source.

[0069] To facilitate the collection of waste material 11 after welding and cutting, a waste material collection mechanism is also provided. The waste material collection mechanism includes a waste material collection roller group 9 and several passing rollers 10 arranged between the waste material collection roller group 9 and the negative pressure transfer roller 3. The waste material collection roller group 9 includes a first collection roller and a second collection roller arranged in abutting position, wherein the outer diameter of the first collection roller is smaller than that of the second collection roller.

[0070] To prevent odors from the welding and cutting process from spreading and polluting the environment, an isolation cover (not shown) is also provided. This isolation cover surrounds the integrated welding and cutting mechanism and has an exhaust vent for odor extraction. The odors generated during the welding and cutting process are removed by extracting the odors from the exhaust vent.

[0071] Example 2

[0072] The rest is the same as in Example 1, except that: since the sealing and cutting blade 1-1 on the outer circumference of the mold roller 1 has a certain height, the welded and cut product is located in the area enclosed by the sealing and cutting blade 1-1. In order to facilitate the efficient transfer of the product on the mold roller 1 to the negative pressure transfer roller 3, a first air blowing interface is also included, which is set at the opposite position of the mold roller 1 and the negative pressure transfer roller 3 (material feeding position). Correspondingly, a first air blowing interface is provided on the first air distribution plate 12. The first air vent 1-2 rotated to this position is connected to the first air blowing source through the first air blowing interface. The welded and cut product on the mold roller 1 is blown by the first air blowing source, so that it is separated from the mold roller 1 and smoothly transferred to the negative pressure transfer roller 3. In this example, the thicknesses of the first layer material (non-woven fabric) 100, the middle layer material (functional layer) 200 and the third layer material (non-woven fabric) 300 are 0.39mm, 0.40mm and 0.39mm, respectively.

[0073] Example 3

[0074] The rest is the same as in Embodiment 1, except that: in order to facilitate the product on the negative pressure transfer roller 3 to detach from the negative pressure transfer roller 3 and enter the conveying component 4, a second air blowing interface is provided at the corresponding position of the negative pressure transfer roller 3 and the conveying component 4. Specifically, the second air blowing interface is set on the second air distribution plate 13. When the second air hole 3-1 rotates to the position of the second air blowing interface, it is connected to the second air blowing source. The product is detached by blowing air onto the outer circumferential surface of the negative pressure transfer roller 3 through the second air blowing source.

[0075] Example 4

[0076] Everything else is the same as in Example 1, except that: to facilitate precise lamination of the multilayer composite material, a composite material guiding mechanism is also provided to guide the three-layer composite material to the welding and cutting integrated mechanism, such as... Figure 1 As shown, the composite material guiding mechanism includes a first guide roller 5 and a second guide roller 6 arranged at intervals, and a third guide roller 7 and a fourth guide roller 8 that abut against the first guide roller 5.

[0077] The third layer material 300 is wound in an S-shape sequentially around the first guide roller 5 and the second guide roller 6. The first layer material 100 and the intermediate layer material 200 are superimposed and composited with the third layer material 300 after passing through the third guide roller 7, the fourth guide roller 8, and the first guide roller 5. During this process, the protective film 201 of the intermediate layer material 200 is removed at the position of the fourth guide roller 8. When the first layer material 100 contacts the first guide roller 5, the third layer material 300 is located on the outermost side and does not contact the first guide roller 5. When passing through the second guide roller 6, the first layer material 100 moves to the outermost side and does not contact the second guide roller 6, while the third layer material 300 contacts the second guide roller 6. This eliminates the problem of material misalignment, and the composite material guiding mechanism can also provide sufficient driving force for the composite material. The third guide roller 7 is used to increase the contact area between the first layer material 100 and the intermediate layer material 200 and the first guide roller 5, thereby improving driving stability; the fourth guide roller 8 is used to separate the protective film and further increase the contact area between the first layer material 100, the intermediate layer material 200 and the first guide roller 5, thereby improving driving stability.

[0078] Example 5

[0079] Everything else is the same as in Example 4, except that a boxing mechanism is also included. This mechanism is located downstream of the composite separation and conveying mechanism and is used to box the separated sheet products. The boxing mechanism can be a pre-existing sheet product boxing machine, and its specific structure will not be described in detail here. Thus, through the cooperation of the composite material guiding mechanism, the welding and cutting integrated mechanism, the negative pressure separation and conveying mechanism, and the boxing mechanism, efficient and continuous production of sheet products is achieved, improving production efficiency.

[0080] This invention also discloses a process for an integrated ultrasonic sealing and cutting device for composite materials, comprising the following steps:

[0081] S1. The first layer material 100, the middle layer material 200 and the third layer material 300 are unwound and automatically corrected, and then synchronously fed to the composite material guiding mechanism to be combined into a flexible composite strip. The three layers of materials are arranged in an S-shape in the composite material guiding mechanism to eliminate material misalignment.

[0082] S2. The flexible composite strip is introduced into the welding and cutting integrated mechanism, and the flexible composite strip passes between the ultrasonic welding head 2 and the rotating mold roller 1.

[0083] S3. Start the ultrasonic generator. The welding head 2 transmits high-frequency vibration to the flexible composite strip, causing it to melt instantly in the local area where it contacts the protruding sealing and cutting blade 1-1 of the mold roller 1. Under pressure, the sealing and cutting of the product contour area and the material are completed at the same time, forming a single product array connected by the waste frame.

[0084] S4. After sealing and cutting, the product adheres to the surface of the mold roller 1. The first vent hole inside the mold roller 1 adsorbs and fixes the product, which rotates with the mold roller 1. When the product rotates to the position corresponding to the negative pressure transfer roller 3, the negative pressure adsorption is released, and the product is sucked up by the negative pressure transfer roller 3 and transferred to the downstream conveying component 4 to complete the separation and output.

[0085] In summary, this integrated welding and cutting device combines the welding and sealing of multi-layer materials into one process, and can process multiple products arranged in an array, thereby improving production efficiency.

[0086] The above examples are merely illustrative of the technical concept and features of the present invention, intended to enable those skilled in the art to understand the content of the invention and implement it accordingly, and should not be construed as limiting the scope of protection of the present invention. All equivalent transformations or modifications made according to the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A welding and cutting integrated mechanism, characterized in that: A tool for welding and slitting flexible materials with at least three layers is provided, including a welding head and a mold roller disposed opposite to the welding head. The outer circumferential surface of the mold roller is provided with a sealing and cutting blade that matches the shape of the product. The sealing and cutting blade includes a protruding cutting edge and a welding part disposed on the side of the cutting edge and having a radial height difference with the cutting edge. The welding part is continuously transitioned from the cutting edge to the outer extension of the sealing and cutting blade.

2. The welding and cutting integrated mechanism according to claim 1, characterized in that: The width of the cutting edge is 0.01 to 0.1 mm, and the width of the welded part is 0.2 to 0.8 mm.

3. The welding and cutting integrated mechanism according to claim 1, characterized in that: The thickness of the flexible material in the upper and lower layers is 0.05 to 0.5 mm, and the thickness of the flexible material in the middle layer is 0.05 to 1 mm.

4. The welding and cutting integrated mechanism according to claim 1, characterized in that: The outer circumferential surface of the mold roller is provided with a plurality of first ventilation holes, which are located within the area enclosed by the sealing and cutting blade and are connected to the first negative pressure source via the first negative pressure interface.

5. The welding and cutting integrated mechanism according to claim 4, characterized in that: It also includes a first air blowing interface located at the material feeding position of the mold roller, which connects to the first air blowing source when the first air vent rotates to the position of the first air blowing interface.

6. The welding and cutting integrated mechanism according to claim 1, characterized in that: The mold roller is equipped with a cooling module for suppressing the volatilization of the intermediate layer material of the flexible material. The cooling module includes a cooling pipe disposed inside the mold roller, a liquid inlet pipe connected to the cooling pipe, and a cooling medium connected to the liquid inlet pipe.

7. The welding and cutting integrated mechanism according to claim 6, characterized in that: The cooling pipe includes a cooling cavity arranged circumferentially along the mold roller and an inlet / outlet liquid cavity communicating with the cooling cavity, the inlet / outlet liquid cavity extending axially along the mold roller; The liquid inlet pipe passes through the liquid inlet and outlet chambers. The inner end of the liquid inlet pipe is sealed and the outer end is the liquid inlet end. The liquid inlet pipe has multiple liquid inlet holes in the circumferential direction near the sealed end, which connect to the liquid inlet and outlet chambers. One end of the cooling chamber is connected to the liquid inlet and outlet chambers through multiple first connecting holes, and the other end of the cooling chamber is connected to the liquid inlet and outlet chambers through multiple second connecting holes.

8. The welding and cutting integrated mechanism according to claim 7, characterized in that: The inlet pipe is supported by a support block inside the inlet / outlet chamber, and the support block divides the inlet / outlet chamber into an outlet chamber and an inlet chamber arranged from the outside to the inside.

9. The welding and cutting integrated mechanism according to claim 1, characterized in that: The sealing and cutting blades are arranged in an array along the axial direction of the mold roller on the outer peripheral surface of the mold roller.

10. A composite material integrated ultrasonic sealing and cutting device, characterized in that: Includes the welding and cutting integrated mechanism as described in any one of claims 1 to 9.

11. The integrated ultrasonic sealing and cutting device for composite materials according to claim 10, characterized in that: It also includes a negative pressure separation conveying mechanism, which is located downstream of the welding and cutting integrated mechanism to realize the separation of products, including a negative pressure transfer roller arranged opposite to the mold roller and a conveying component arranged below the negative pressure transfer roller.

12. The integrated ultrasonic sealing and cutting device for composite materials according to claim 11, characterized in that: The outer circumferential surface of the negative pressure transfer roller is provided with a plurality of second vent holes, and also includes a second negative pressure interface disposed at the position corresponding to the negative pressure transfer roller and the mold roller. When the second vent hole rotates to the second negative pressure interface, it is connected to the second negative pressure source.

13. The integrated ultrasonic sealing and cutting device for composite materials according to claim 12, characterized in that: It also includes a second air blowing interface disposed at the position corresponding to the negative pressure transfer roller and the conveying component, which is connected to the second air blowing source when the second air vent rotates to the second air blowing interface.

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