Folding equipment and method for welding production of permanent inner film

Abstract

The invention relates to the technical field of permanent inner film production, in particular to folding equipment and method for permanent inner film welding production, and the folding equipment comprises a machine tool which is provided with a turning-over assembly, a first folding and smoothing assembly, a second folding and smoothing assembly and a third folding and smoothing assembly for permanent inner film production. A vibration mechanism is arranged on the folding and smoothing assembly II; the vibration mechanism comprises a transmission assembly connected with the third folding and smoothing assembly, a knocking structure and a liquid conveying assembly, wherein the knocking structure and the liquid conveying assembly are arranged on the second folding and smoothing assembly, and a linkage assembly is arranged between the knocking structure and the transmission assembly. According to the folding equipment and method for welding production of the permanent inner film, it is ensured that folding lines are clear and straight every time and the product appearance is regular through multi-stage smoothing, meanwhile, in the smoothing process, air between film material layers can be effectively scattered through composite knocking, fibers can be straightened out through tangential force, and close folding almost without bubbles and dead folds is achieved in combination with subsequent rolling.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of permanent inner membrane production, in particular to a folding device and method for permanent inner membrane welding production. BACKGROUND

[0002] Traditional permanent inner membrane folding mainly relies on a large amount of manual operation or simple mechanical roller pressing, and has significant disadvantages. Manual folding is low in efficiency, high in labor intensity, and difficult to guarantee the consistency of the folding size, the straightness of the edge line and the flatness between layers, and is prone to form air pockets between the membrane layers or produce dead folds at the folding position. In the existing flexible material conveying production line, there is usually a lack of online processing stations capable of integrating complex forming processes such as accurate folding and deep layer air exhaust, resulting in discontinuous production processes and product quality depending on subsequent independent and offline manual processing procedures.

[0003] These defects may cause uneven stress and uneven laying of the membrane material during subsequent deployment construction, and even affect the long-term impermeability. Although the simple mechanical roller can improve the efficiency, it has poor adaptability to the complex folding process and cannot effectively exhaust the air between the layers. The folding effect of thick membranes or composite membranes is particularly limited, and therefore a folding device and method for permanent inner membrane welding production are proposed to solve the problems in the above. SUMMARY

[0004] In view of the deficiencies of the prior art, in order to improve the production effect of the inner membrane, the application provides a folding device and method for permanent inner membrane welding production, which has the advantages of high folding efficiency, high folding quality and effective elimination of interlayer problems, and solves the problems in the above.

[0005] The application provides a folding device and method for permanent inner membrane welding production, which adopts the following technical scheme: A folding device for permanent inner membrane welding production, comprising a machine tool, a turnover assembly for permanent inner membrane production, a folding and smoothing assembly one, a folding and smoothing assembly two and a folding and smoothing assembly three are arranged on the machine tool, and a vibration mechanism is arranged on the folding and smoothing assembly two; The vibration mechanism comprises a transmission assembly connected with the folding and smoothing assembly three, a knocking structure and a liquid conveying assembly arranged on the folding and smoothing assembly two, and a linkage assembly is arranged between the knocking structure and the transmission assembly; The knocking structure comprises a reciprocating plate, a support frame and a knocking piece mounted on the support frame, the knocking piece comprises a reciprocating shaft, a sheath fixed inside the support frame and a guide sleeve fixed on the top side of the support frame, the reciprocating shaft penetrates the inside of the guide sleeve and the sheath respectively, the top end outer surface of the reciprocating shaft is provided with a connecting assembly connected with the reciprocating plate, the inside of the reciprocating plate is provided with a guide groove one rolling matched with the connecting assembly, the inside of the guide sleeve is provided with a guide rod one, the inside of the reciprocating shaft is provided with a guide groove two surrounding the outer surface, the bottom side of the reciprocating shaft is rotatably provided with a knocking block, and the top end of the reciprocating shaft is rotatably provided with a connecting pipe connected with the infusion assembly.

[0006] Optionally, the transmission assembly comprises a cam rotatably arranged, two synchronous wheels are arranged between the outer wall of the cam and the folding flattening assembly three, and a tensioning wheel is further slidably arranged above the cam, and a synchronous belt is transmissionally connected between the two synchronous wheels and the tensioning wheel.

[0007] Optionally, the linkage assembly comprises an L-shaped frame, two ends of the L-shaped frame are connected with the reciprocating plate and the cam respectively, one end of the L-shaped frame is provided with a guide rod two abutting matched with the cam, the inside of the reciprocating plate is provided with an adjusting groove and a positioning hole, the other end of the L-shaped frame is slidably matched with the adjusting groove, and the end portion is provided with a positioning shaft inserted into the positioning hole, and the outside of the L-shaped frame is further provided with an elastic guide.

[0008] Optionally, the bottom side of the reciprocating plate is provided with a mounting rail mounted on the top side of the folding flattening assembly two, the inside of the reciprocating shaft is provided with a cavity, and the inside of the reciprocating shaft is further provided with a liquid outlet hole communicated with the cavity, the connecting pipe is communicated with the cavity, and the liquid outlet hole faces the inside of the sheath.

[0009] Optionally, the guide groove one is spirally arranged, the guide groove two is wavelike arranged, the connecting assembly comprises a frame rod mounted on the top end outer surface of the reciprocating shaft, a cross rod is fixedly arranged in the inside of the frame rod, and a guide wheel rolling matched with the guide groove two is bearingly arranged on the end portion of the cross rod.

[0010] Optionally, the infusion assembly comprises a pressure cylinder, the inside of the pressure cylinder is provided with a piston extending to the outside, one side of the piston is provided with a connecting block connected with the reciprocating plate, two check valves are mounted on the outer wall of the pressure cylinder, and one end of the connecting pipe is connected with one of the check valves.

[0011] Optionally, the turning-over assembly, the folding and smoothing assembly one, the folding and smoothing assembly two and the folding and smoothing assembly three are sequentially arranged from left to right, the turning-over assembly comprises a first gantry fixed to the outer wall of the machine tool, two adjusting seats one are slidably arranged in the first gantry, two side support plates are fixed to the two adjusting seats one, two pressing plates one parallel to the machine tool are fixed to the outer walls of the two side support plates, and a pressing plate two is slidably arranged on the top side of the machine tool.

[0012] Optionally, the folding and smoothing assembly one comprises a mounting seat, an adjusting rod one is fixed to the outer wall of the mounting seat, an adjusting rod two is slidably arranged on the outer surface of the adjusting rod one, an adjusting seat two is arranged on the outer surface of the adjusting rod two, eight smoothing rollers are arranged on the outer surface of the adjusting seat two, the adjusting rod one and the adjusting rod two are arranged along the X and Z axes, the eight smoothing rollers are arranged in four groups, and the four smoothing rollers in each group are arranged in pairs.

[0013] Optionally, the folding and smoothing assembly two comprises a first electric telescopic rod and a pressing plate three fixed to the output end of the first electric telescopic rod, the folding and smoothing assembly three comprises a second gantry fixed to the side wall of the machine tool, a concave bracket is arranged below the second gantry, a roller is rotatably arranged in the concave bracket, a second electric telescopic rod is arranged on the top side of the concave bracket and fixed to the outer wall of the second gantry, and the end of the roller is connected with one of the synchronous wheels in the transmission assembly.

[0014] Another problem to be solved by the present application is to provide a folding method for permanent inner film welding production, comprising the following steps: S1, conveying and folding: S1-1, feeding and positioning: the permanent inner film semi-finished product in a cylindrical shape after hot melting welding is fed and positioned on the working surface of the machine tool in a flat manner, two adjusting seats one on the first gantry of the turning-over assembly are adjusted to move the two side support plates and the pressing plates one thereon to appropriate positions, and the cylindrical inner film is preliminarily limited and unfolded from both sides; S1-2, first turning-over folding: the turning-over assembly and the driving pressing plate two are started to cooperate with the pressing plate one and the pressing plate two to fold the flat cylindrical inner film along the longitudinal center line once, and the pressing plate two is assisted from the bottom or the side to ensure that the turning-over process is smooth and without misalignment; S1-3, first dynamic smoothing: the folded film material enters the working area of the folding and smoothing assembly one, and the positions of the eight smoothing rollers on the X-axis adjusting rod two 33 and the Z-axis adjusting rod one 32 are finely adjusted according to the width and folding state of the film material, wherein the left four rollers guide and preliminarily compact the eight-shaped folding ridge line, and the right four rollers roll and smooth the film surface as a whole to eliminate wrinkles and bubbles caused by turning over, and ensure that the first folding line is clear and flat; S1-4, second pressing and folding: the preliminarily smoothed film material is conveyed to below the folding and smoothing assembly two, the first electric telescopic rod is started to drive the pressing plate three to move downward, and the film material that has completed the first folding is pressed and folded in the second time along the direction perpendicular to the first folding line; S1-5, third rolling and shaping: the second folded film material that has been smoothed by vibration is continuously conveyed to the folding and smoothing assembly three, the second electric telescopic rod drives the concave frame and the roller to press downward, and the film material is finally rolled and shaped, and the pressure of the roller ensures that all the folding ridge lines are clear and firm, and the layers are closely attached; S2, hot melt welding: S2-1, the permanent inner film that has been folded and smoothed three times and has a compact structure is conveyed to a special welding station, and the two sides or special gap interfaces of the permanent inner film in the final folding state are heated and pressed with the special welding film to make them melt and fixedly bond, so as to form a sealed and firm seam line and lock the folding shape; S3, collection: S3-1, the finished permanent inner film is output from the end of the equipment, and is neatly stacked or wound by manual or automatic collection device, so as to complete the whole production process.

[0015] In summary, the present application has at least one of the following beneficial technical effects: 1. Through the cooperation of the pressing plate one and the pressing plate two of the turning over assembly, the film material is folded along the longitudinal center line for the first time, the multiple groups of adjustable smoothing rollers of the folding and smoothing assembly one roll and press the first folding line and the film surface, the pressing plate three of the folding and smoothing assembly two is pressed downward to fold for the second time to eliminate large wrinkles, and finally the roller of the folding and smoothing assembly three applies stable pressure to the film material that has been treated by vibration to complete the final rolling and shaping, so that the folding shape is firm.

[0016] 2. Through multiple stages of smoothing, it is ensured that each folding line is clear, straight and regular in appearance, and in the smoothing process, the composite knocking can effectively shake off the air between the film layers, the tangential force can straighten the fibers, and combined with subsequent rolling, the tight folding with almost no bubbles and dead folds is realized.

[0017] 3. The lubricating oil enters the cavity at the top of the reciprocating shaft through the connecting pipe and flows into the internal chamber. Finally, it seeps out from the outlet hole. Since the outlet hole faces the inner wall of the sheath, the lubricating oil is directly and accurately delivered to the friction pair surface between the reciprocating shaft and the sheath, forming a lubricating film and achieving active, timed, and quantitative forced lubrication. Attached Figure Description

[0018] Figure 1 This is a cross-sectional view of the overall structure of this application; Figure 2 This is a schematic diagram of the structure of the turning component of this application; Figure 3 This is a schematic diagram of the overall structure of the vibration mechanism of this application; Figure 4 This is a structural side view of the vibration mechanism of this application; Figure 5 This is a schematic diagram of the transmission assembly of this application; Figure 6 This is a cross-sectional view of the striking structure of this application; Figure 7 This application Figure 6 A magnified structural diagram of structure A is shown below; Figure 8 This is a cross-sectional view of the infusion assembly of this application.

[0019] Explanation of reference numerals in the attached figures: 1. Machine tool; 2. Turning assembly; 21. First gantry frame; 22. Adjusting seat one; 23. Side support plate; 24. Pressure plate one; 3. Folding and smoothing assembly one; 31. Mounting seat; 32. Adjusting rod one; 33. Adjusting rod two; 34. Adjusting seat two; 35. Smoothing roller; 4. Pressure plate two; 5. Folding and smoothing assembly two; 51. First electric telescopic rod; 52. Pressure plate three; 6. Folding and smoothing assembly three; 61. Second gantry frame; 62. Concave frame; 63. Roller; 64. Second electric telescopic rod; 7. Vibration mechanism; 71. Transmission assembly; 711. Cam; 712. Synchronous pulley; 713. Tensioner; 714. Synchronous belt; 72. Striking structure; 721. Towards 722. Support frame; 723. Striking component; 7231. Reciprocating shaft; 7232. Sheath; 7233. Guide sleeve; 7234. Striking block; 7235. Guide groove one; 7236. Chamber; 7237. Liquid outlet; 724. Guide rod one; 725. Guide groove two; 726. Connecting assembly; 7261. Frame rod; 7262. Crossbar; 7263. Guide wheel; 73. Linkage assembly; 731. L-frame; 732. Guide rod two; 733. Elastic guide; 734. Adjusting groove; 735. Positioning hole; 74. Infusion assembly; 741. Pressure cylinder; 742. Piston; 743. Check valve; 744. Connecting block; 75. Connecting pipe. Detailed Implementation

[0020] The following is in conjunction with the appendix Figures 1-8 This application will be described in further detail.

[0021] Example 1, as shown in the figure - Figure 2 As shown, this is the first embodiment of the present invention. This embodiment provides a folding device for permanent inner membrane welding production, including a machine tool 1. The machine tool 1 is equipped with a turning assembly 2, a first folding and smoothing assembly 3, a second folding and smoothing assembly 5, and a third folding and smoothing assembly 6 for permanent inner membrane production. The turning assembly 2, the first folding and smoothing assembly 3, the second folding and smoothing assembly 5, and the third folding and smoothing assembly 6 are distributed sequentially from left to right. The turning assembly 2 includes a first gantry frame 21 bolted to the outer wall of the machine tool 1. Two adjusting seats 22 are slidably arranged on the inner side of the first gantry frame 21. Both adjusting seats 22 are bolted with side support plates 23, and both side support plates 23 are fixed with pressure plates 24 parallel to the machine tool 1 on their outer walls. Pressure plates 4 are slidably installed on the top side of the machine tool 1. It should be noted that in the turning assembly 2, the first gantry 21 is fixed to the outer wall of the machine tool 1, and the two adjusting seats 22 are slidably set, which can flexibly adjust the position of the side support plates 23 and pressure plates 24. With the pressure plates 4 slidably installed on the top side of the machine tool 1, the permanent inner film can be turned precisely to meet the turning requirements of inner films of different specifications and improve production flexibility.

[0022] The folding and smoothing component 3 in this embodiment includes a mounting base 31. An adjusting rod 32 is fixed to the outer wall of the mounting base 31. An adjusting rod 33 is slidably mounted on the outer surface of the adjusting rod 32. An adjusting seat 34 is mounted on the outer surface of the adjusting rod 33. Smoothing rollers 35 are mounted on the outside of the adjusting seat 34. It should be noted that the adjusting rod 32 and the adjusting rod 33 are arranged along the X and Z axes. There are eight smoothing rollers 35 and eight adjusting seats 34. The eight smoothing rollers 35 are distributed in groups of four, with the four smoothing rollers 35 on the left side arranged in pairs. The fabric has two smoothing rollers 35 on the left side arranged in a figure-eight shape. Specifically, the adjusting rod 32 and adjusting rod 33 of the folding smoothing component 3 are set along the X and Z axes. This design allows the adjusting seat 34 and smoothing rollers 35 to be adjusted in multiple directions, which can adapt to the smoothing requirements of inner membranes of different shapes and sizes. The eight smoothing rollers 35 are distributed in groups of four, and the four smoothing rollers 35 on the left side have a specific pair of left and right and figure-eight arrangement, which can smooth the inner membrane from multiple angles and in all directions, effectively eliminating inner membrane wrinkles and improving inner membrane quality.

[0023] In this embodiment, the second folding and smoothing component 5 includes a first electric telescopic rod 51 and a third pressure plate 52 fixed to the output end of the first electric telescopic rod 51. The third folding and smoothing component 6 includes a second gantry frame 61 fixed to the side wall of the machine tool 1. A concave frame 62 is provided below the second gantry frame 61. A roller 63 is rotatably arranged on the inner side of the concave frame 62. A second electric telescopic rod 64 is fixed on the outer wall of the second gantry frame 61 and connected to the top side of the concave frame 62. In use, the second folding and smoothing component 5 uses the first electric telescopic rod 51 to drive the third pressure plate 52, which can apply vertical pressure to the inner film for smoothing. The third folding and smoothing component 6 controls the position of the concave frame 62 and the roller 63 through the second electric telescopic rod 64, and uses the rolling of the roller 63 to smooth the inner film. By combining two different smoothing methods, the smoothing needs of the inner film at different folding stages can be better met, and the flatness of the inner film can be further improved.

[0024] It is worth mentioning that in this embodiment, the flipping component 2, the folding and smoothing component one 3, the folding and smoothing component two 5, and the folding and smoothing component three 6 are distributed on the machine tool 1 from left to right, so that the inner film can go through flipping, preliminary smoothing, and further smoothing processes in sequence, thereby achieving continuous and efficient production, reducing material handling and waiting time in the production process, and improving production efficiency.

[0025] Example 2, as Figure 1 , Figures 3-8 As shown, this is the second embodiment of the present invention. Unlike the first embodiment, the second folding and smoothing component 5 is provided with a vibration mechanism 7. Specifically, the vibration mechanism 7 includes a transmission component 71 connected to the third folding and smoothing component 6, a striking structure 72 and an infusion component 74 disposed on the second folding and smoothing component 5, and a linkage component 73 disposed between the striking structure 72 and the transmission component 71. The vibration mechanism 7 is installed on the second folding and smoothing component 5 to introduce vibration function into the inner membrane smoothing process. When smoothing the inner membrane, the vibration effect can better eliminate the internal stress of the inner membrane, making the inner membrane smoother. Especially for some inner membranes that have internal stress concentration due to folding and are difficult to smooth by pressure alone, the vibration mechanism 7 can effectively improve the smoothing effect, improve the quality of the inner membrane, and improve the intelligent effect during membrane delivery.

[0026] In this embodiment, the transmission assembly 71 includes a rotatably mounted cam 711, which is rotatably mounted on the outer wall of the second gantry 61. Two synchronous pulleys 712 are provided between the outer wall of the cam 711 and the folding and smoothing assembly 6, and a tensioning pulley 713 is slidably provided above the cam 711. A synchronous belt 714 is connected between the two synchronous pulleys 712 and the tensioning pulley 713. Specifically, the end of the roller 63 is connected to one of the synchronous pulleys 712 in the transmission assembly 71. It should be noted that the tensioning wheel 713 is slidably installed inside the second gantry 61, and a sliding groove is provided inside the second gantry 61. An electric rod that rotates with the tensioning wheel 713 is installed in the sliding groove for adjusting the position of the tensioning wheel 713 so as to adjust the lifting and lowering of the roller 63. In this embodiment, the synchronous transmission through the synchronous wheel 712 and the synchronous belt 714 can ensure the synchronicity and stability of the transmission, so that the movement between the cam 711 and the roller 63 is coordinated and consistent, ensuring that the working rhythm of the vibration mechanism 7 and the folding and smoothing assembly 6 are matched, and improving the overall stability of the equipment operation. In addition, the end of the roller 63 is connected to the synchronous wheel 712, so that the movement of the roller 63 is linked with the transmission assembly 71. While realizing the vibration function, it does not affect the smoothing effect of the roller 63 on the inner membrane, so that the vibration and smoothing actions are organically combined, further improving the smoothing effect of the inner membrane.

[0027] The striking structure 72 in this embodiment includes a reciprocating plate 721, a support frame 722, and a striking element 723 mounted on the support frame 722. The striking element 723 includes a reciprocating shaft 7231, a sheath 7232 fixed inside the support frame 722, and a guide sleeve 7233 fixed to the top side of the support frame 722. The reciprocating shaft 7231 passes through the guide sleeve 7233 and the sheath 7232 respectively. A connecting component 726 connected to the reciprocating plate 721 is provided on the outer surface of the top end of the reciprocating shaft 7231. A first guide groove 7235 that rolls with the connecting component 726 is opened inside the reciprocating plate 721. A first guide rod 724 is installed inside the guide sleeve 7233. A second guide groove 725 surrounding the outer surface is opened inside the reciprocating shaft 7231. A striking block 7234 is rotatably mounted on the bottom side of the reciprocating shaft 7231. A connecting tube 75 connected to the infusion assembly 74 is rotatably mounted on the top end of the reciprocating shaft 7231. The support frame 722 is bolted to the top side of the pressure plate 3 52. In use, the reciprocating plate 721 and the connecting component 726 cooperate with the guide groove 1 7235 to convert the linear motion of the reciprocating plate 721 into the reciprocating motion of the reciprocating shaft 7231, so that the striking block 7234 can periodically strike the inner membrane to achieve the effect of vibration smoothing.

[0028] The linkage component 73 in this embodiment includes an L-frame 731. Both ends of the L-frame 731 are connected to a reciprocating plate 721 and a cam 711, respectively. One end of the L-frame 731 is equipped with a guide rod 732 that abuts against the cam 711. The reciprocating plate 721 has an adjustment groove 734 and a positioning hole 735 inside. The other end of the L-frame 731 slides with the adjustment groove 734, and its end is equipped with a positioning shaft that inserts into the positioning hole 735. The adjustment groove 734 and the positioning hole 735 allow for a certain degree of adjustability in the connection between the L-frame 731 and the reciprocating plate 721. The relative position of the L-frame 731 and the reciprocating plate 721 can be adjusted according to the actual operating conditions of the equipment and the specifications of the inner membrane, thereby changing the motion parameters of the striking structure 72 and improving the flexibility and adaptability of the equipment. To improve the transmission effect, an elastic guide 733 is also provided on the outside of the L-frame 731. The elastic guide 733 includes a guide rod and a return spring. The adjustment groove 734 and positioning hole 735 allow for a certain degree of adjustability in the connection between the L-frame 731 and the reciprocating plate 721. The relative position of the L-frame 731 and the reciprocating plate 721 can be adjusted according to the actual operating conditions of the equipment and the specifications of the inner membrane, thereby changing the motion parameters of the striking structure 72 and improving the flexibility and adaptability of the equipment. In this embodiment, the L-frame 731 transmits the rotational motion of the cam 711 to the reciprocating plate 721, realizing power transmission and forming an effective linkage between the transmission assembly 71 and the striking structure 72, ensuring the coordination of the actions of each part of the vibration mechanism 7. It should be noted that the bottom side of the reciprocating plate 721 is provided with a guide rail installed on the top side of the folding and smoothing component 2 5 to ensure the stable use of the reciprocating plate 721. The guide rail is fixed to the top side of the pressure plate 3 52. The reciprocating shaft 7231 has a chamber 7236 inside, and the reciprocating shaft 7231 also has a liquid outlet hole 7237 that communicates with the chamber 7236. The connecting pipe 75 communicates with the chamber 7236, and the liquid outlet hole 7237 faces the inside of the sheath 7232.

[0029] Specifically, in this embodiment, the guide groove 725 has a wave-shaped shape, and the connecting component 726 includes a support rod 7261 installed on the outer surface of the top end of the reciprocating shaft 7231. A crossbar 7262 is fixed inside the support rod 7261, and a guide wheel 7263 that rolls with the guide groove 725 is installed at the end bearing of the crossbar 7262.

[0030] The infusion assembly 74 in this embodiment includes a pressure cylinder 741, which is fixed to the top side of the pressure plate 52. A piston 742 extending outward is provided inside the pressure cylinder 741. A connecting block 744 connected to the reciprocating plate 721 is installed on one side of the piston 742. Two check valves 743 are installed on the outer wall of the pressure cylinder 741. One end of the connecting pipe 75 is connected to one of the check valves 743. In this embodiment, the piston 742 is driven to reciprocate within the pressure cylinder 741 by the reciprocating plate 721. Combined with the function of the check valve 743, the directional delivery of lubricating fluid can be achieved, providing lubrication for the striking structure 72, reducing friction between components, reducing wear, and extending the service life of the equipment.

[0031] It should be noted that the guide groove 7235 is spirally shaped. The installation of the guide rod 724 allows the reciprocating shaft 7231 to rotate, thereby delivering lubricating fluid to the inside of the sheath 7232. The chamber 7236 serves as a storage and circulation space for the lubricating fluid. The lubricating fluid delivered by the infusion assembly 74 is introduced into the chamber 7236 through the connecting pipe 75, and then delivered to the inside of the sheath 7232 through the outlet hole 7237. This provides lubrication for the relative movement between the reciprocating shaft 7231 and the sheath 7232, reducing frictional resistance and energy loss. Furthermore, the design of the guide groove 725 allows the reciprocating shaft 7231 to rotate simultaneously with its reciprocating motion. This combined motion alters the striking angle and action mode of the striking block 7234 on the inner membrane, further enhancing the vibration smoothing effect and enabling more comprehensive treatment of the inner membrane. Another problem that this invention also needs to solve is to provide a folding method for producing a permanent inner membrane, comprising the following steps: S1, Conveying Folding: S1-1, Feeding and Positioning: The semi-finished permanent inner membrane, which has been completed by hot melt welding and is in the shape of a cylinder, is laid flat and conveyed to the working surface of the machine tool 1 with longitudinal weld seams. By adjusting the two adjusting seats 22 on the first gantry frame 21 of the turning assembly 2, the two side support plates 23 and the pressure plates 24 on them are moved to the appropriate positions, and the cylindrical inner membrane is initially limited and unfolded from both sides. S1-2, First Folding: Start the folding assembly 2 and drive the pressure plate 2 4, so that the pressure plate 1 24 and the pressure plate 2 4 work together to fold the flat cylindrical inner film along its longitudinal center line. The pressure plate 2 4 assists from below or the side to ensure that the folding process is flat and without misalignment. S1-3, First Dynamic Smoothing: The folded membrane material enters the working area of ​​the folding and smoothing component 3. According to the width and folding state of the membrane material, the positions of the eight smoothing rollers 35 on the X-axis adjusting rod 33 and the Z-axis adjusting rod 32 are finely adjusted. Among them, the four rollers on the left side guide and initially compact the folding edge line in a figure-eight shape, while the four rollers on the right side roll and smooth the membrane surface as a whole, eliminating wrinkles and air bubbles caused by flipping, and ensuring that the first folding line is clear and flat. S1-4, Second pressing and folding: The initially smoothed membrane material is transported to the underside of the folding and smoothing component 2 5, the first electric telescopic rod 51 is activated, and the pressure plate 3 52 is driven to move downward, pressing and folding the membrane material that has been folded once in a direction perpendicular to the first folding line for the second time. S1-5, Third Roller Pressing and Shaping: The second folded film material, which has been smoothed by vibration, is continued to be conveyed to the folding and smoothing component 6. The second electric telescopic rod 64 drives the concave frame 62 and roller 63 to press down and perform the final roller pressing and shaping on the film material. The pressure of the roller 63 ensures that all fold lines are clear and firm, and the layers are tightly bonded. It should be noted that during the film material conveying process in step S1 and this step, the roller 63 of the folding and smoothing assembly 6 rotates under drive, and transmits the rotational power to the cam 711 through the transmission assembly 71, which consists of the synchronous wheel 712, synchronous belt 714, and tension wheel 713 connected to it. The rotation of the cam 711 is converted into linear reciprocating motion of the L-frame 731 and the reciprocating plate 721 fixed thereto through the linkage assembly 73. Specifically, the cam 711 pushes the guide rod 732, which drives the L-frame 731 to reciprocate along its adjustment groove 734. The elastic guide 733 provides return assist, and the movement of the reciprocating plate 721 interacts with the guide wheel 7263 of the connecting assembly 726 through its internal spiral guide groove 7235. Since the guide wheel 7263 is fixed to the top of the reciprocating shaft 7231 through the crossbar 7262 and the frame rod 7261, the reciprocating shaft 7231 is forced to generate rotational motion while moving up and down linearly with the reciprocating plate 721. The rotational motion of the reciprocating shaft 7231 is constrained by its internal wave-shaped guide groove 725 and the guide rod 724 fixed in the guide sleeve 7233, and is transformed into a regular compound striking action of the striking block 7234 rotating-pressing-returning. The action periodically and tangentially strikes the folded part of the membrane material below, effectively dispersing interlayer air and straightening the fibers. At the same time, the reciprocating motion of the reciprocating plate 721 drives the piston 742 of the infusion assembly 74 to reciprocate within the pressure cylinder 741 via the connecting block 744. The movement of the piston 742 is controlled by two check valves 743, which pump liquid, such as a small amount of lubricant or antistatic agent, from the connecting pipe 75 into the chamber 7236 inside the reciprocating shaft 7231. The liquid is then ejected through the rotational motion of the reciprocating shaft 7231, achieving not only lubrication but also facilitating folding.

[0032] S2, Hot melt welding: S2-1. The permanent inner membrane, which has been folded and smoothed three times and has a tight and flat structure, is transported to a dedicated welding station. Using hot melt welding, the two sides or specific seam interfaces of the permanent inner membrane in its final folded state are heated and pressurized with a dedicated welding membrane to melt and fix it to form a sealed and strong seam, locking the folded shape. S3, Collection: S3-1. The finished permanent inner membrane, after welding, is output from the end of the equipment and neatly stacked or wound by manual or automated collection devices to complete the entire production process.

[0033] Combined with appendix Figures 1-8 The working principle of the above embodiments is as follows: The inner membrane enters the equipment from the left and first passes through the flipping assembly 2. The two adjusting seats 22 on the first gantry frame 21 can slide to adjust the distance, which drives the side support plate 23 and the pressure plate 24 to press the inner membrane from both sides. With the help of the slidingly installed pressure plate 4, the inner membrane is flipped and initially positioned to ensure that the inner membrane enters the subsequent process in the correct posture. By sliding the adjustment rod 32 and adjustment rod 33 along the X and Z axes, the position of the adjustment seat 34 can be adjusted in multiple dimensions, thereby controlling the pressing force and angle of the eight smoothing rollers 35. The four smoothing rollers 35 on the left are distributed in pairs, with two of them arranged in a figure-eight shape, which can initially fold the inner membrane and smooth out wrinkles, providing a foundation for subsequent fine folding. The pressure plate 3 52 is driven to move up and down by the first electric telescopic rod 51 to perform secondary pressing and smoothing of the inner membrane, further eliminating wrinkles and ensuring the flatness of the inner membrane. The second electric telescopic rod 64 drives the concave frame 62 to move up and down, driving the roller 63 to press the inner membrane. The end of the roller 63 is connected to the synchronous wheel 712 in the transmission assembly 71 to provide power input to the vibration mechanism 7. Driven by the roller 63 of the folding and smoothing component 36, the hammering structure 72 is driven by the transmission component 71. Under the drive of the mechanism, the hammering block 7234 performs a compound hammering with rotation and slight vibration on the newly formed second fold line area, which can eliminate interlayer air, straighten fibers and prevent adhesion.

[0034] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A folding apparatus for permanent inner membrane welding production, comprising a machine tool (1), characterized in that: The machine tool (1) is provided with a turnover assembly (2) for permanent inner film production, a folding smoothing assembly one (3), a folding smoothing assembly two (5) and a folding smoothing assembly three (6), the folding smoothing assembly two (5) is provided with a vibration mechanism (7); The vibration mechanism (7) comprises a transmission assembly (71) connected with the folding smoothing assembly three (6), a knocking structure (72) and a transfusion assembly (74) arranged on the folding smoothing assembly two (5), and a linkage assembly (73) is arranged between the knocking structure (72) and the transmission assembly (71); The knocking structure (72) comprises a reciprocating plate (721), a support frame (722) and a knocking piece (723) mounted on the support frame (722), the knocking piece (723) comprises a reciprocating shaft (7231), a sheath (7232) fixed in the support frame (722) and a guide sleeve (7233) fixed on the top side of the support frame (722), the reciprocating shaft (7231) penetrates the guide sleeve (7233) and the sheath (7232) respectively, the top end outer surface of the reciprocating shaft (7231) is provided with a connecting assembly (726) connected with the reciprocating plate (721), the reciprocating plate (721) is internally provided with a guide groove one (7235) in rolling fit with the connecting assembly (726), the guide sleeve (7233) is internally provided with a guide rod one (724), the reciprocating shaft (7231) is internally provided with a guide groove two (725) surrounding the outer surface, the bottom side of the reciprocating shaft (7231) is rotatably provided with a knocking block (7234), and the top end of the reciprocating shaft (7231) is rotatably provided with a connecting pipe (75) connected with the transfusion assembly (74).

2. A folding apparatus for permanent inner membrane welding production according to claim 1, characterized in that: The transmission assembly (71) comprises a cam (711) rotatably arranged, two synchronous wheels (712) are arranged between the outer wall of the cam (711) and the folding smoothing assembly three (6), and a tension wheel (713) is further slidably arranged above the cam (711), and the two synchronous wheels (712) and the tension wheel (713) are drivingly connected with a synchronous belt (714).

3. A folding apparatus for permanent inner membrane welding production according to claim 2, characterized in that: The linkage assembly (73) comprises an L-shaped frame (731), both ends of the L-shaped frame (731) are connected with the reciprocating plate (721) and the cam (711) respectively, one end of the L-shaped frame (731) is provided with a guide rod two (732) in abutting fit with the cam (711), the reciprocating plate (721) is internally provided with an adjusting groove (734) and a positioning hole (735), the other end of the L-shaped frame (731) is slidably fitted with the adjusting groove (734), and the end portion is provided with a positioning shaft inserted into the positioning hole (735), and the L-shaped frame (731) is further provided with an elastic guide (733).

4. The folding apparatus for permanent inner film welding production according to claim 1, characterized in that: The bottom side of the reciprocating plate (721) is provided with a guide rail mounted on the top side of the folding flattening assembly two (5), a cavity (7236) is formed in the reciprocating shaft (7231), and a liquid outlet hole (7237) in communication with the cavity (7236) is also formed in the reciprocating shaft (7231), the connecting pipe (75) is in communication with the cavity (7236), and the liquid outlet hole (7237) faces the inside of the sheath (7232).

5. The folding apparatus for permanent inner film welding production according to claim 1, characterized in that: The guide groove one (7235) is spiral-shaped, the guide groove two (725) is wave-shaped, the connecting assembly (726) includes a frame rod (7261) mounted on the top outer surface of the reciprocating shaft (7231), a cross rod (7262) is fixed in the frame rod (7261), and a guide wheel (7263) in rolling contact with the guide groove two (725) is rotatably mounted at the end of the cross rod (7262).

6. The folding apparatus for permanent inner film welding production according to claim 1, characterized in that: The infusion assembly (74) includes a pressure cylinder (741), a piston (742) is arranged in the pressure cylinder (741) and extends out of the pressure cylinder (741), a connecting block (744) connected with the reciprocating plate (721) is mounted on one side of the piston (742), two check valves (743) are mounted on the outer wall of the pressure cylinder (741), and one end of the connecting pipe (75) is connected with one of the check valves (743).

7. The apparatus according to claim 1, wherein: The turnover assembly (2), the folding flattening assembly one (3), the folding flattening assembly two (5) and the folding flattening assembly three (6) are sequentially arranged from left to right, the turnover assembly (2) includes a first gantry (21) bolted to the outer wall of the machine tool (1), two adjusting seats one (22) are slidably arranged in the first gantry (21), a side support plate (23) is bolted to each of the two adjusting seats one (22), a pressing plate one (24) parallel to the machine tool (1) is fixed to the outer wall of each of the two side support plates (23), and a pressing plate two (4) is slidably mounted on the top side of the machine tool (1).

8. The folding apparatus for permanent inner film welding production according to claim 1, characterized in that: The folding flattening assembly one (3) includes a mounting seat (31), an adjusting rod one (32) is fixed to the outer wall of the mounting seat (31), an adjusting rod two (33) is slidably mounted on the outer surface of the adjusting rod one (32), an adjusting seat two (34) is mounted on the outer surface of the adjusting rod two (33), flattening rollers (35) are mounted on the outside of the adjusting seat two (34), the adjusting rod one (32) and the adjusting rod two (33) are arranged along the X and Z axes, the number of the flattening rollers (35) and the adjusting seat two (34) is eight, four of the eight flattening rollers (35) are arranged on the left and right sides, and the left four flattening rollers (35) are arranged on the left and right sides in pairs, wherein the left two flattening rollers (35) are arranged in a herringbone shape.

9. The folding apparatus for permanent inner film welding production according to claim 2, characterized in that: The folding smoothing assembly two (5) comprises a first electric telescopic rod (51) and a pressing plate three (52) fixed on the output end of the first electric telescopic rod (51), the folding smoothing assembly three (6) comprises a second gantry (61) fixed on the side wall of the machine tool (1), a concave frame (62) is arranged below the second gantry (61), a roller (63) is rotatably arranged on the inner side of the concave frame (62), a second electric telescopic rod (64) is fixed on the outer wall of the second gantry (61) and located at the top side of the concave frame (62), and the end of the roller (63) is connected with one of the synchronous wheels (712) in the transmission assembly (71).

10. A folding method for permanent inner membrane welding production using the folding apparatus for permanent inner membrane welding production according to any one of claims 1 to 9, characterized by: The method comprises the following steps: S1, conveying folding: S1-1, feeding and positioning: the permanent inner film semi-finished product after hot melt welding and in a cylindrical shape is conveyed to the working surface of the machine tool (1) in a flat manner, two adjusting seats one (22) on the first gantry (21) of the turning assembly (2) are adjusted, two side supporting plates (23) and the pressing plate one (24) thereon are moved to appropriate positions, and the cylindrical inner film is preliminarily positioned and unfolded from both sides; S1-2, first turning folding: the turning assembly (2) and the driving pressing plate two (4) are started, the pressing plate one (24) and the pressing plate two (4) are cooperated to fold the flat cylindrical inner film along the longitudinal center line once, the pressing plate two (4) is assisted from below or side to ensure that the turning process is smooth and without misalignment; S1-3, first dynamic smoothing: the folded film material enters the working area of the folding smoothing assembly one (3), eight smoothing rollers (35) on the X-axis adjusting rod two 33 and the Z-axis adjusting rod one 32 are finely adjusted according to the width and folding state of the film material, wherein the left four rollers group fold the eight-shaped guide and preliminary compaction of the folding ridge line, and the right four rollers roll and smooth the whole film surface to eliminate the wrinkles and bubbles generated in the turning to ensure that the first folding line is clear and smooth; S1-4, second pressing folding: the preliminarily smoothed film material is conveyed to below the folding smoothing assembly two (5), the first electric telescopic rod (51) is started, the driving pressing plate three (52) is moved downward, and the film material after the first folding is pressed and folded again in the direction perpendicular to the first folding line; S1-5, third roller pressing and shaping: the second folding film material after vibration assisted smoothing is continuously conveyed to the folding smoothing assembly three (6), the second electric telescopic rod (64) drives the concave frame (62) and the roller (63) to press downward, and the film material is finally rolled and shaped, and the pressure of the roller (63) ensures that all the folding ridge lines are clear and firm, and the layers are tightly attached; S2, hot melt welding: S2-1, the permanent inner film after three times of folding and smoothing and having a compact and smooth structure is conveyed to a special welding station, the two sides or special gap interfaces of the permanent inner film in the final folding state are heated and pressed by using hot melt welding to make them melt and fixedly bonded with the special welding film to form a sealed and firm seam line and lock the folding shape; S3, collecting: S3-1. The finished permanent inner film product, after welding, is output from the end of the equipment and is neatly stacked or wound by a manual or automated collection device, completing the entire production process.

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