An edge-unfolding packaging machine and an edge-unfolding vacuum thermal insulation panel manufacturing method

Abstract

The application discloses a non-edge folding packaging machine, which comprises a rack, a tensioning device, a lifting device, a pressing device and a heat sealing device. The rack comprises a lower mounting frame, a connecting column and an upper mounting frame. The lower end of the connecting column is connected with the lower mounting frame, and the upper end of the connecting column is connected with the upper mounting frame. The tensioning device comprises a lower pulling device and an upper pulling device. The lower pulling device is arranged on the lower mounting frame to pull the lower barrier film, and the upper pulling device is arranged on the upper mounting frame to pull the upper barrier film. The lifting device is arranged on the upper mounting frame and is connected with the upper pulling device to drive the upper pulling device to lift. The pressing device is arranged on the upper mounting frame to compress the core material, and the heat sealing device is arranged on the pressing device and / or the lower mounting frame. The application also discloses a non-edge folding vacuum heat insulation board preparation method. The barrier film is pulled during packaging by arranging the tensioning device, the core material does not need to be bagged, the prepared vacuum heat insulation board has a small virtual edge, and the non-edge folding is realized.

Description

Technical Field

[0001] This invention relates to the field of vacuum insulation panel manufacturing technology, and in particular to a non-folded edge packaging machine and a non-folded edge vacuum insulation panel manufacturing method. Background Technology

[0002] Vacuum insulation panels are a new type of high-efficiency insulation material based on the principle of vacuum insulation. They combine the advantages of vacuum insulation, microporous insulation and multilayer insulation, thus having outstanding insulation effect.

[0003] The traditional method for preparing vacuum insulation panels involves placing the core material in a barrier bag and then evacuating it. When the vacuum is broken after the core material is vacuumed and heat-sealed, it is compressed, reducing its volume. After the vacuum insulation panel is prepared, it needs to be manually folded before use. This manual folding process can damage the barrier film, thus affecting the performance of the vacuum insulation panel. Summary of the Invention

[0004] Based on the aforementioned problems in the prior art, the first objective of this application is to provide a non-folded edge packaging machine, which, by setting a tensioning device, tightens the barrier film during packaging, eliminating the need to bag the core material, resulting in a small vacant edge in the vacuum insulation board, thus achieving the goal of eliminating the need for edge folding.

[0005] The second objective of this application is to provide a method for preparing a non-folded vacuum insulation panel.

[0006] The technical solution adopted by this application to solve its technical problem is: a non-folded edge sealing machine, including a frame, a tensioning device, a lifting device, a pressing device and a heat sealing device;

[0007] The frame includes a lower mounting bracket, a connecting column, and an upper mounting bracket. The lower end of the connecting column is connected to the lower mounting bracket, and the upper end of the connecting column is connected to the upper mounting bracket. The tensioning device includes a lower pulling device and an upper pulling device. The lower pulling device is disposed on the lower mounting bracket to tension the lower barrier film, and the upper pulling device is disposed on the upper mounting bracket to tension the upper barrier film. The lifting device is disposed on the upper mounting bracket and is connected to the upper pulling device to drive the upper pulling device to move up and down. The pressing device is disposed on the upper mounting bracket to compress the core material, and the heat sealing device is disposed on the pressing device and / or the lower mounting bracket.

[0008] Furthermore, the tensioning device includes a substrate and a tensioning mechanism. The tensioning mechanism includes a front tensioning mechanism, a rear tensioning mechanism, a left tensioning mechanism, and a right tensioning mechanism. The front tensioning mechanism is disposed on the front side of the substrate, the rear tensioning mechanism is disposed on the rear side of the substrate, the left tensioning mechanism is disposed on the left side of the substrate, and the right tensioning mechanism is disposed on the right side of the substrate. A cavity for tensioning the barrier film is formed between the front tensioning mechanism, the rear tensioning mechanism, the left tensioning mechanism, and the right tensioning mechanism.

[0009] Furthermore, the tensioning mechanism includes a fixed base, a slide rail, a tensioning seat, and a tensioning spring. The fixed base is disposed on the base plate, the slide rail is disposed on the base plate, the tensioning seat is slidably disposed on the slide rail, one end of the tensioning spring is connected to the tensioning seat, and the other end of the tensioning spring is connected to the fixed base so that the tensioning seat has a tendency to move outward.

[0010] Furthermore, the tensioning mechanism also includes a top plate, a lower pressure block, and a drive assembly. The top plate is disposed on the tensioning seat and located below the lower pressure block. A clamping cavity is formed between the top plate and the lower pressure block. The drive assembly is disposed on the tensioning seat and is connected to the lower pressure block, driving the lower pressure block to move closer to or away from the top plate.

[0011] Furthermore, the drive assembly includes a tensioning frame, a drive frame, a drive handle, and a connecting rod. The tensioning frame is mounted on a tensioning seat, the drive frame is rotatably mounted on the tensioning frame, the lower pressure block is mounted on the drive frame, the end of the drive handle is rotatably mounted on the drive frame, one end of the connecting rod is rotatably connected to the middle of the drive handle, and the other end of the connecting rod is rotatably connected to the tensioning frame.

[0012] Furthermore, the drive frame includes a first plate and a second plate, which are disposed opposite to each other, and an adjustment cavity is formed between the first plate and the second plate.

[0013] Furthermore, the lower pressure block is mounted on the drive frame via an adjustment assembly. The adjustment assembly includes an adjustment rod, a first adjustment nut, a first adjustment block, a second adjustment block, and a second adjustment nut. The adjustment rod is mounted on the lower pressure block and passes through the adjustment cavity. The first adjustment block is mounted on the adjustment rod, and the first adjustment nut is mounted on the adjustment rod, with the first adjustment block pressing against the bottom of the first plate and the second plate. The second adjustment block is mounted on the adjustment rod, and the second adjustment nut is mounted on the adjustment rod, with the second adjustment block pressing against the top of the first plate and the second plate.

[0014] Furthermore, there are two front tensioning mechanisms, five rear tensioning mechanisms, two left tensioning mechanisms, and two right tensioning mechanisms.

[0015] Furthermore, a first soft pad is provided at the bottom of the lower pressure block, and a second soft pad is provided at the top of the top plate.

[0016] Furthermore, a long clamp is provided on the tensioning seat.

[0017] Furthermore, a lower mounting plate is provided on the lower mounting frame, and a track is provided on the lower mounting plate; a slider that can slide along the track is provided on the base plate to pull the base plate out of the frame.

[0018] Furthermore, the substrate is provided with a handle for easy pulling outwards.

[0019] Furthermore, the lower mounting plate has a first plate and a second plate protruding from the side of the frame, and the first plate and the second plate are provided with the track, which is arranged in parallel.

[0020] Furthermore, a clearance cavity is formed between the first plate and the second plate.

[0021] Furthermore, a loop-shaped frame is provided on the lower mounting bracket, and a limiting groove for limiting the core material is formed inside the loop-shaped frame.

[0022] Furthermore, the heat sealing device is a PI heating film disposed on a U-shaped frame.

[0023] Furthermore, the herringbone frame is provided with a high-temperature heat-pressing cloth or a knurled rubber pad.

[0024] Furthermore, the lifting device includes a motor, a worm gear jack, and an upper mounting plate. The worm gear jack includes a lifting rod, which is connected to the motor and drives the lifting rod to move up and down. The upper mounting plate is connected to the lifting rod and moves up and down synchronously with the lifting rod.

[0025] Furthermore, the worm gear jack is a four-platform U-shaped connection worm gear jack, and the lifting rod has four sections.

[0026] Furthermore, a pressure sensor is installed between the upper mounting plate and the lifting rod.

[0027] Furthermore, the bottom of the upper mounting plate is provided with a U-shaped pressure frame for adhering the upper barrier film and the lower barrier film.

[0028] Furthermore, a clearance groove is formed within the spiral-shaped pressure frame for the pressure plate to pass through.

[0029] Furthermore, a second track is provided at the bottom of the upper mounting plate.

[0030] Furthermore, the pull-up device includes a first tensioning mechanism and a second tensioning mechanism. The first tensioning mechanism is disposed on the lower side of the substrate, and the second tensioning mechanism is disposed on the upper side of the substrate. A guide assembly is disposed on the side of the substrate. The guide assembly includes a first guide seat, a second guide seat, and a guide rod. The first guide seat is fixed on the substrate, the second guide seat is fixed on the substrate, one end of the guide rod is connected to the first guide seat, and the other end of the guide rod is connected to the second guide seat.

[0031] Furthermore, the pressing device includes a servo electric cylinder and a pressure plate. The servo electric cylinder is fixed on the upper mounting frame, and the pressure plate is connected to the servo electric cylinder through a coupling. The pressure plate is driven to rise and fall by the servo electric cylinder.

[0032] Furthermore, the dimensions of the pressure plate are consistent with the dimensions of the core material.

[0033] Furthermore, a positioning component for positioning the core material is provided on the substrate, the positioning component including a side positioning component for positioning the side of the core material and an end positioning component for positioning the end of the core material.

[0034] Furthermore, the side positioning assembly includes a side positioning track, a side positioning seat, a first side positioning plate, and a second side positioning plate. The side positioning track is fixed on the substrate, the side positioning seat is movably disposed on the side positioning track, the first side positioning plate is disposed on the side positioning seat, the second side positioning plate is rotatably connected to the first side positioning plate, and the second side positioning plate can abut against the side of the core material.

[0035] Furthermore, the end positioning assembly includes an end positioning track, an end positioning seat, a first end positioning plate, and a second end positioning plate. The end positioning track is fixed on the substrate, the end positioning seat is movably disposed on the end positioning track, the first end positioning plate is disposed on the end positioning seat, the second end positioning plate is rotatably connected to the first end positioning plate, and the second end positioning plate can abut against the end of the core material.

[0036] Furthermore, the end positioning track is perpendicular to the side positioning track.

[0037] The technical solution adopted by this application to solve its technical problem is: a method for preparing a non-folded edge vacuum insulation panel, comprising the following steps:

[0038] S1, place the lower barrier film on the pull-down device of the non-folded edge sealing machine and tighten it, and place the upper barrier film on the pull-up device of the non-folded edge sealing machine and tighten it.

[0039] S2, Place the core material on the lower barrier film;

[0040] S3, vacuum the core material;

[0041] S4, the upper barrier membrane moves downward and approaches the lower barrier membrane, so that the upper barrier membrane is directly opposite the lower barrier membrane;

[0042] S5, the pressing device presses down on the upper barrier membrane, driving the core material to compress and then hold the pressure;

[0043] S6, the upper barrier film continues to move downwards, so that the edge of the upper barrier film fits with the edge of the lower barrier film;

[0044] S7, the heat sealing device heat seals the edge of the upper barrier film and the edge of the lower barrier film together to form a sealing edge;

[0045] S8, the pressure device returns to its original position, and the vacuum insulation board is taken out after the vacuum is broken;

[0046] S9, trim the edge banding of the vacuum insulation panel.

[0047] Furthermore, before placing the core material on the lower barrier membrane, the getter and desiccant are placed on the core material.

[0048] Furthermore, the core material is made of centrifugal cotton, ultrafine rock wool, or ultrafine glass wool.

[0049] Furthermore, during vacuuming, the non-folded edge sealing machine is located inside the vacuum chamber, and vacuuming is performed after the vacuum chamber door is closed.

[0050] Furthermore, the lower barrier membrane moves downward under the drive of the lifting device to approach the upper barrier membrane.

[0051] Furthermore, the downward pressure of the downward pressure device on the upper barrier membrane is greater than or equal to 1 atm.

[0052] Furthermore, the heat sealing device heat seals the edges of the upper and lower barrier films at a temperature of 120°C to 180°C for a time of 10 to 45 seconds.

[0053] Furthermore, after cutting the edge banding of the vacuum insulation panel, the edge banding width is 5mm-20mm.

[0054] Furthermore, in step S1, the pull-down device and the pull-up device are pulled out to fix the lower barrier film and the upper barrier film; in step S2, the core material is centered and positioned on the lower barrier film by the side positioning component and the end positioning component.

[0055] The beneficial effects of this application are as follows: During the preparation of the vacuum insulation panel, the edge of the lower barrier film is fixed to the lower pulling device, which tightens the lower barrier film. Similarly, the edge of the upper barrier film is fixed to the upper pulling device, which tightens the upper barrier film. This ensures that both the upper and lower barrier films are in a taut state during heat sealing, reducing film bending and sealing wrinkles, and improving the heat sealing effect. Furthermore, since bagging is not required during manufacturing, the loose edges between the core material and the sealing edge are small. After appropriate trimming of the sealing edge, folding is not necessary. Attached Figure Description

[0056] Figure 1 This is a schematic diagram of the non-folded edge packaging machine in this application;

[0057] Figure 2 This is a schematic diagram of the pull-down device in this application;

[0058] Figure 3 This is a structural schematic diagram of the pull-down device from another angle in this application;

[0059] Figure 4 This is a schematic diagram of the tensioning mechanism in this application;

[0060] Figure 5 This is a schematic diagram showing the connection between the lifting device and the upward pulling device in this application;

[0061] Figure 6 This is a schematic diagram showing the connection between the lifting device and the pull-up device at another angle in this application.

[0062] Explanation of reference numerals in the attached figures

[0063] Frame 1, Lower mounting bracket 11, Connecting column 12, Upper mounting bracket 13, Lower mounting plate 14, Rail 141, U-shaped frame 15, Limiting groove 16, Tensioning device 2, Lower pull-down device 2a, Upper pull-up device 2b, First tensioning mechanism 2b1, Second tensioning mechanism 2b2, Base plate 21, Handle 211, Tensioning mechanism 22, Front tensioning mechanism 22a, Rear tensioning mechanism 22b, Left tensioning mechanism 22c, Right tensioning mechanism 22d, Fixed seat 221, Slide rail 222, Tensioning seat 223, Tensioning spring 224, Top plate 225, Lower pressure block 226, Drive assembly 227, Tensioning frame 2271, Drive frame 2272, Drive handle 2273, Connecting rod 2274, Adjustment assembly 228, Adjustment Section rod 2281, first adjusting nut 2282, first adjusting block 2283, second adjusting block 2284, second adjusting nut 2285, guide assembly 23, first guide seat 231, second guide seat 232, guide rod 233, side positioning assembly 24, side positioning rail 241, side positioning seat 242, first side positioning plate 243, second side positioning plate 244, end positioning assembly 25, end positioning rail 251, end positioning seat 252, end positioning connecting plate 253, end positioning flat plate 254, lifting device 3, motor 31, worm gear lift 32, lifting rod 321, upper mounting plate 33, return pressure frame 331, lower pressing device 4, servo electric cylinder 41, pressure plate 42, heat sealing device 5. Detailed Implementation

[0064] To better explain and facilitate understanding of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0065] like Figures 1 to 6As shown, a non-folded edge sealing machine of the present invention includes a frame 1, a tensioning device 2, a lifting device 3, a pressing device 4, and a heat sealing device 5. The frame 1 includes a lower mounting frame 11, a connecting column 12, and an upper mounting frame 13. The lower end of the connecting column 12 is connected to the lower mounting frame 11, and the upper end of the connecting column 12 is connected to the upper mounting frame 13. The tensioning device 2 includes a pulling device 2a and an pulling device 2b. The pulling device 2a is disposed on the lower mounting frame 11 to tension the lower barrier film, and the pulling device 2b is disposed on the upper mounting frame 13 to tension the upper barrier film. The lifting device 3 is disposed on the upper mounting frame 13, and the lifting device 3 is connected to the pulling device 2b and drives the pulling device 2b to move up and down. The pressing device 4 is disposed on the upper mounting frame 13 to compress the core material. The heat sealing device 5 is disposed on the pressing device 4 and / or the lower mounting frame 11.

[0066] Thus, the edge-free sealing machine of the present invention, during the preparation of the vacuum insulation board, fixes the edge of the lower barrier film to the lower pull device 2a, so that the lower pull device 2a tightens the lower barrier film, and fixes the edge of the upper barrier film to the upper pull device 2b, so that the upper pull device 2b tightens the upper barrier film. This ensures that during heat sealing, the upper and lower barrier films are in a taut state, reducing film bending during heat sealing, reducing sealing wrinkles, and improving the heat sealing effect. During manufacturing, since bagging is not required, the loose edge between the core material and the sealing edge is small, and after appropriate trimming of the sealing edge, edge folding can be eliminated.

[0067] Optionally, the tensioning device 2 includes a substrate 21 and a tensioning mechanism 22. The tensioning mechanism 22 includes a front tensioning mechanism 22a, a rear tensioning mechanism 22b, a left tensioning mechanism 22c, and a right tensioning mechanism 22d. The front tensioning mechanism 22a is disposed on the front side of the substrate 21, the rear tensioning mechanism 22b is disposed on the rear side of the substrate 21, the left tensioning mechanism 22c is disposed on the left side of the substrate 21, and the right tensioning mechanism 22d is disposed on the right side of the substrate 21. A cavity for tensioning the barrier film is formed between the front tensioning mechanism 22a, the rear tensioning mechanism 22b, the left tensioning mechanism 22c, and the right tensioning mechanism 22d.

[0068] When manufacturing the vacuum insulation panel, the lower pull device 2a tightens the lower barrier film, and the upper pull device 2b tightens the upper barrier film. Specifically, the left tightening mechanism 22c tightens the left side of the barrier film, the right tightening mechanism 22d tightens the right side of the barrier film, the front tightening mechanism 22a tightens the front side of the barrier film, and the rear tightening mechanism 22b tightens the rear side of the barrier film. This tightens the edges of the barrier film, reduces curling during heat sealing, reduces sealing wrinkles, and improves the heat sealing effect.

[0069] like Figure 4As shown, in this embodiment, the tensioning mechanism 22 includes a fixed base 221, a slide rail 222, a tensioning seat 223, and a tensioning spring 224. The fixed base 221 is mounted on the base plate 21, the slide rail 222 is mounted on the base plate 21, and the tensioning seat 223 is slidably mounted on the slide rail 222. One end of the tensioning spring 224 is connected to the tensioning seat 223, and the other end of the tensioning spring 224 is connected to the fixed base 221 to give the tensioning seat 223 a tendency to move outward. Connecting posts (not shown) can be provided on the fixed base 221 and the tensioning seat 223, and the tensioning spring 224 is connected to the connecting posts to achieve the outward tendency of the tensioning seat 223. By providing the tensioning spring 224, after the upper and lower barrier films are held together, the tensioning spring 224 gives the tensioning seat 223 a tendency to move outward, thereby driving the barrier film to be pulled outward and tightening the barrier film, reducing the curling phenomenon that occurs during heat sealing of the barrier film.

[0070] When the pressure plate 42 compresses the core material through the upper barrier film, the upper barrier film will deform when it is pressed down. By setting the tensioning mechanism 22, the upper barrier film is always in a tensioned state, thereby effectively reducing the curling phenomenon that occurs during heat sealing of the barrier film.

[0071] In this embodiment, the tensioning mechanism 22 further includes a top plate 225, a lower pressure block 226, and a drive assembly 227. The top plate 225 is disposed on the tensioning seat 223 and is located below the lower pressure block 226. A clamping cavity is formed between the top plate 225 and the lower pressure block 226. The drive assembly 227 is disposed on the tensioning seat 223 and is connected to the lower pressure block 226, driving the lower pressure block 226 to move closer to or away from the top plate 225.

[0072] After placing the upper or lower barrier film between the lower pressure block 226 and the top plate 225, the driving assembly 227 is operated to move the lower pressure block 226 closer to the top plate 225, so that the upper side of the barrier film is tightly attached to the lower pressure block 226 and the lower side of the barrier film is tightly attached to the top plate 225, thus clamping the barrier film. After the vacuum insulation panel is manufactured, the driving assembly 227 is operated to move the lower pressure block 226 away from the top plate 225, making it easier to remove the manufactured vacuum insulation panel.

[0073] Specifically, the drive assembly 227 includes a tensioning frame 2271, a drive frame 2272, a drive handle 2273, and a connecting rod 2274. The tensioning frame 2271 is mounted on the tensioning seat 223. The drive frame 2272 is rotatably mounted on the tensioning frame 2271. A lower pressure block 226 is mounted on the drive frame 2272. The end of the drive handle 2273 is rotatably mounted on the drive frame 2272. One end of the connecting rod 2274 is rotatably connected to the middle of the drive handle 2273, and the other end of the connecting rod 2274 is rotatably connected to the tensioning frame 2271.

[0074] During operation, force can be applied to the drive handle 2273 to rotate the drive frame 2272. The lower pressure block 226 is set on the drive frame 2272. The rotation of the drive frame 2272 causes the lower pressure block 226 to move closer to or away from the top plate 225, thereby clamping or releasing the barrier membrane.

[0075] In some examples, the drive frame 2272 includes a first plate and a second plate, which are disposed opposite to each other, forming an adjustment cavity between them. A lowering block 226 is mounted on the drive frame 2272 via an adjustment assembly 228. Specifically, the adjustment assembly 228 includes an adjustment rod 2281, a first adjusting nut 2282, a first adjusting block 2283, a second adjusting block 2284, and a second adjusting nut 2285. The adjustment rod 2281 is mounted on the lowering block 226 and passes through the adjustment cavity. The first adjusting block 2283 is mounted on the adjustment rod 2281, and the first adjusting nut 2282 is mounted on the adjustment rod 2281, causing the first adjusting block 2283 to press against the bottom of the first and second plates. The second adjusting block 2284 is mounted on the adjustment rod 2281, and the second adjusting nut 2285 is mounted on the adjustment rod 2281, causing the second adjusting block 2284 to press against the top of the first and second plates.

[0076] By setting an adjustment cavity, which is rectangular in shape, the position of the lower pressure block 226 can be adjusted, making it suitable for barrier films of different specifications. After adjusting the adjustment rod 2281 to the appropriate position in the adjustment cavity, the adjustment rod 2281 is fixed by tightening the first adjustment nut 2282 and the second adjustment nut 2285 to prevent the lower pressure block 226 from shifting.

[0077] Furthermore, multiple front tensioning mechanisms 22a, rear tensioning mechanism 22b, left tensioning mechanism 22c, and right tensioning mechanism 22d are configured. For example, two front tensioning mechanisms 22a, five rear tensioning mechanisms 22b, two left tensioning mechanisms 22c, and two right tensioning mechanisms 22d are configured. By configuring multiple front tensioning mechanisms 22a, rear tensioning mechanism 22b, left tensioning mechanism 22c, and right tensioning mechanism 22d, the barrier membrane can be tensioned at multiple points, resulting in a good tensioning effect.

[0078] Preferably, a first soft pad is provided at the bottom of the lower pressure block 226, and a second soft pad is provided at the top of the top plate 225. After the barrier film is clamped, the first soft pad is in close contact with the upper side of the barrier film, and the second soft pad is in close contact with the lower side of the barrier film, thereby effectively reducing the damage to the surface of the barrier film when it is tightened.

[0079] As another embodiment, a long clamp is provided on the tensioning seat 223. The barrier membrane can also be tightened by operating the long clamp, and the operation of the long clamp is also relatively convenient.

[0080] In this embodiment, a lower mounting plate 14 is provided on the lower mounting frame 11, and a track 141 is provided on the lower mounting plate 14; a slider that can slide along the track 141 is provided on the base plate 21 to pull the base plate 21 out of the frame 1. A handle 211 is provided on the base plate 21 for easy pulling outwards. A first plate and a second plate protruding from the side of the frame 1 are formed on the side of the lower mounting plate 14, and the track 141 is provided on the first plate and the second plate, with the track 141 of the first plate and the track 141 of the second plate arranged parallel to each other.

[0081] In use, the substrate 21 is quickly pulled out of the frame 1 via the handle 211, making it easy to fix the barrier film onto the tensioning mechanism 22, which is quite convenient. By setting the track 141 and the slider, the process of pulling out or pushing in the substrate 21 is made smoother.

[0082] Furthermore, a clearance cavity is formed between the first plate and the second plate. By providing the clearance cavity, the process of pulling out the substrate 21 becomes more convenient.

[0083] In this embodiment, a U-shaped frame 15 is provided on the lower mounting bracket 11, and a limiting groove 16 for limiting the core material is formed inside the U-shaped frame 15. By providing the limiting groove 16, the core material is easily limited so that when the pressure plate 42 is pressed down, the core material is located in the limiting groove 16. The size of the limiting groove 16 is slightly larger than the size of the core material to ensure that the core material is pressed into the limiting groove 16.

[0084] Furthermore, the heat-sealing device 5 is a PI heating film mounted on the U-shaped frame 15. The polyimide film PI electric heating film is formed by heat-sealing with a polyimide film as the outer insulator and metal foil or metal wire as the inner conductive heating element under high temperature and high pressure. By setting the PI heating film, the barrier film is heated, so that the upper barrier film and the lower barrier film are successfully heat-sealed together.

[0085] The U-shaped frame 15 is equipped with a high-temperature heat-pressed cloth or knurled rubber pad. This creates a textured, rough surface in the sealing area, which helps to absorb defects that occur during the sealing process.

[0086] In some examples, the lifting device 3 includes a motor 31, a worm gear jack 32, and an upper mounting plate 33. The worm gear jack 32 includes a lifting rod 321, which is connected to the motor 31 and driven by the motor 31 to lift the lifting rod 321. The upper mounting plate 33 is connected to the lifting rod 321 and lifts synchronously with the lifting rod 321. When the upper barrier membrane needs to be lowered, the motor 31 drives the worm gear jack 32 to work, thereby driving the lifting rod 321 to descend. The descent of the lifting rod 321 causes the upper mounting plate 33 to descend, allowing the upper barrier membrane to approach and abut against the lower barrier membrane.

[0087] The worm gear jack 32 is a four-platform U-shaped worm gear jack 32, with four lifting rods 321. The four lifting rods 321 move synchronously, making the lifting process of the upper mounting plate 33 smoother. In this example, a pressure sensor is installed between the upper mounting plate 33 and the lifting rods 321 to control the pressure.

[0088] In this embodiment, a U-shaped pressure frame 331 is provided at the bottom of the upper mounting plate 33 for bonding the upper barrier film and the lower barrier film. By providing the U-shaped pressure frame 331, after the upper mounting plate 33 is lowered, the U-shaped pressure frame 331 can press on the upper barrier film, so that the edge of the upper barrier film and the edge of the lower barrier film are bonded together. A PI heating film can be provided on the U-shaped pressure frame 331 to achieve heat sealing of the edge of the upper barrier film and the edge of the lower barrier film together.

[0089] To facilitate the compression of the core material by the pressure plate 42, a clearance groove is formed in the U-shaped pressure frame 331 for the pressure plate 42 to pass through. Furthermore, another track is provided at the bottom of the upper mounting plate 33 to allow the upper pull-out device 2b to be pulled out, which facilitates the fixing of the upper barrier film.

[0090] In some examples, the pull-up device 2b includes a first tensioning mechanism 2b1 and a second tensioning mechanism 2b2. The first tensioning mechanism 2b1 is disposed on the lower side of the substrate 21, and the second tensioning mechanism 2b2 is disposed on the upper side of the substrate 21. A guide assembly 23 is disposed on the side of the substrate 21. The guide assembly 23 includes a first guide seat 231, a second guide seat 232, and a guide rod 233. The first guide seat 231 is fixed on the substrate 21, the second guide seat 232 is fixed on the substrate 21, one end of the guide rod 233 is connected to the first guide seat 231, and the other end of the guide rod 233 is connected to the second guide seat 232.

[0091] By setting the second tensioning mechanism 2b2, when fixing the upper barrier film, the upper barrier film can be wrapped around the guide rod 233 and then fixed from the top of the substrate 21, which makes the operation of fixing the upper barrier film more convenient.

[0092] Preferably, the pressing device 4 includes a servo cylinder 41 and a pressure plate 42. The servo cylinder 41 is fixed on the upper mounting bracket 13, and the pressure plate 42 is connected to the servo cylinder 41 via a coupling. The pressure plate 42 is driven to rise and fall by the servo cylinder 41. By setting the servo cylinder 41, the pressure plate 42 is raised and lowered, thereby compressing the core material. The size of the pressure plate 42 is the same as the size of the core material to compress the core material within the limiting groove 16.

[0093] To facilitate the positioning of the core material, a positioning component for positioning the core material is provided on the substrate 21. The positioning component includes a side positioning component 24 for positioning the side of the core material and an end positioning component 25 for positioning the end of the core material. In use, the side positioning component 24 positions the side of the core material, while the end positioning component 25 positions the end of the core material, thereby achieving the positioning of the core material so that the core material is just above the limiting groove 16.

[0094] like Figure 2 As shown, specifically, the side positioning assembly 24 includes a side positioning track 241, a side positioning seat 242, a first side positioning plate 243, and a second side positioning plate 244. The side positioning track 241 is fixed on the base plate 21, the side positioning seat 242 is movably disposed on the side positioning track 241, the first side positioning plate 243 is disposed on the side positioning seat 242, and the second side positioning plate 244 is rotatably connected to the first side positioning plate 243, allowing the second side positioning plate 244 to abut against the side of the core material. In use, the side positioning seat 242 can be slid along the side positioning track 241 to the end, and then the second side positioning plate 244 can be rotated so that the side of the second side positioning plate 244 abuts against the side of the core material, thereby positioning the side of the core material.

[0095] Furthermore, the end positioning assembly 25 includes an end positioning track 251, an end positioning seat 252, an end positioning connecting plate 253, and an end positioning plate 254. The end positioning track 251 is fixed on the base plate 21, the end positioning seat 252 is movably disposed on the end positioning track 251, the end positioning connecting plate 253 is disposed on the end positioning seat 252, and the end positioning plate 254 is disposed on the end positioning connecting plate 253. The end positioning plate 254 can abut against the end of the core material. In use, the end positioning seat 252 is moved so that the end positioning plate 254 abuts against the end of the core material, thereby positioning the end of the core material. By positioning the end and side of the core material, the core material is positioned directly above the limiting groove 16, facilitating the compression of the core material within the limiting groove 16. Since the core material is usually rectangular, in this example, the end positioning track 251 is perpendicular to the side positioning track 241, thereby enabling positioning of two adjacent positions of the core material.

[0096] This application also discloses a method for preparing a non-folded vacuum insulation panel, including the following steps:

[0097] S1. The lower barrier film is placed on the pull-down device 2a of the non-folded edge sealing machine and tightened, and the upper barrier film is placed on the pull-up device 2b of the non-folded edge sealing machine and tightened; S2. The core material is placed on the lower barrier film; S3. The core material is evacuated; S4. The upper barrier film moves downward and approaches the lower barrier film, so that the upper barrier film is directly opposite the lower barrier film; S5. The pressing device 4 presses down on the upper barrier film, driving the core material to compress and hold the pressure; S6. The upper barrier film continues to move downward, so that the edge of the upper barrier film is attached to the edge of the lower barrier film; S7. The heat sealing device 5 heat seals the edge of the upper barrier film and the edge of the lower barrier film together to form a seal; S8. The pressing device 4 returns to its original position, the vacuum is broken, and the vacuum insulation board is taken out; S9. The seal of the vacuum insulation board is cut.

[0098] In step S4, the upper barrier film moves downwards and approaches the lower barrier film, so that the upper barrier film is directly opposite the lower barrier film. If the upper barrier film is just attached to the core material, the pressing device 4 presses down on the upper barrier film, compressing the core material and maintaining pressure. At this time, the upper barrier film is in a taut state. As the upper barrier film continues to move downwards and adheres to the lower barrier film, under the action of the tensioning mechanism 22, the upper barrier film remains taut, reducing film bending during heat sealing, reducing sealing wrinkles, and improving the heat sealing effect. Through the above steps, bagging is not required when manufacturing the vacuum insulation board, resulting in a smaller loose edge. Finally, the sealing edge of the vacuum insulation board is trimmed to achieve no edge folding.

[0099] Furthermore, before placing the core material on the lower barrier membrane, a getter and a desiccant are placed on the core material. By using the getter and desiccant, the moisture remaining in the core material can be adsorbed in a timely manner. In this embodiment, the core material is made of centrifugal cotton, ultrafine rock wool, or ultrafine glass wool.

[0100] Preferably, during vacuuming, the non-folded sealing machine is located inside the vacuum chamber. After closing the vacuum chamber door, vacuuming is performed to remove the core material from the vacuum. Furthermore, the lower barrier film moves downward under the drive of the lifting device 3 to approach the upper barrier film.

[0101] Preferably, the downward pressure of the pressing device 4 on the upper barrier film is greater than or equal to 1 atm. For example, if the rated downward pressure of the core material area is 5t, and the sealing area is uniformly subjected to 1.5-3 atm of pressure, the heat sealing device 5 heat seals the edge of the upper barrier film with the edge of the lower barrier film at a temperature of 120-180 degrees Celsius and a heat sealing time of 10-45 seconds, thereby achieving a tight seal.

[0102] In this process, after the edge sealing of the vacuum insulation board is cut, the edge sealing width is preferably 5mm-20mm. Further, in step S1, the pull-down device 2a and the pull-up device 2b are pulled out to fix the lower barrier film and the upper barrier film; in step S2, the core material is centered and positioned on the lower barrier film by the side positioning component 24 and the end positioning component 25.

[0103] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent modifications made based on the content of the present invention specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A non-folded edge packaging machine, characterized in that: The device includes a frame, a tensioning device, a lifting device, a pressing device, and a heat sealing device. The frame includes a lower mounting frame, a connecting column, and an upper mounting frame. The lower end of the connecting column is connected to the lower mounting frame, and the upper end of the connecting column is connected to the upper mounting frame. The tensioning device includes a lower pulling device and an upper pulling device. The lower pulling device is mounted on the lower mounting frame to tension the lower barrier film, and the upper pulling device is mounted on the upper mounting frame to tension the upper barrier film. The lifting device is mounted on the upper mounting frame and is connected to the upper pulling device, driving the upper pulling device to move up and down. The pressing device is mounted on the upper mounting frame to compress the core material. The heat sealing device is mounted on the pressing device and / or the lower mounting frame. The tensioning device includes a base plate and a tensioning mechanism. The tensioning mechanism includes a front tensioning mechanism, a rear tensioning mechanism, a left tensioning mechanism, and a right tensioning mechanism. The front tensioning mechanism is located on the front side of the base plate, the rear tensioning mechanism is located on the rear side of the base plate, the left tensioning mechanism is located on the left side of the base plate, and the right tensioning mechanism is located on the right side of the base plate. A cavity for tensioning the barrier film is formed between the front tensioning mechanism, the rear tensioning mechanism, the left tensioning mechanism, and the right tensioning mechanism. A lower mounting plate is provided on the lower mounting frame, and a track is provided on the lower mounting plate. A slider that can slide along the track is provided on the base plate to pull the base plate out of the frame.

2. The non-folded edge packaging machine as described in claim 1, characterized in that: The tensioning mechanism includes a fixed base, a slide rail, a tensioning seat, and a tensioning spring. The fixed base is mounted on a base plate, the slide rail is mounted on the base plate, the tensioning seat is slidably mounted on the slide rail, one end of the tensioning spring is connected to the tensioning seat, and the other end of the tensioning spring is connected to the fixed base to give the tensioning seat a tendency to move outward.

3. The non-folded edge packaging machine as described in claim 1, characterized in that: The lower mounting bracket is provided with a spiral frame, and a limiting groove for limiting the core material is formed in the spiral frame.

4. The edge-free packaging machine as described in claim 3, characterized in that: The heat sealing device is a PI heating film mounted on a U-shaped frame.

5. The non-folded edge packaging machine as described in claim 1, characterized in that: The lifting device includes a motor, a worm gear jack, and an upper mounting plate. The worm gear jack includes a lifting rod, which is connected to the motor and drives the lifting rod to move up and down. The upper mounting plate is connected to the lifting rod and moves up and down synchronously with the lifting rod.

6. The non-folded edge packaging machine as described in claim 1, characterized in that: The pull-up device includes a first tensioning mechanism and a second tensioning mechanism. The first tensioning mechanism is disposed on the lower side of the substrate, and the second tensioning mechanism is disposed on the upper side of the substrate. A guide assembly is disposed on the side of the substrate. The guide assembly includes a first guide seat, a second guide seat, and a guide rod. The first guide seat is fixed on the substrate, the second guide seat is fixed on the substrate, one end of the guide rod is connected to the first guide seat, and the other end of the guide rod is connected to the second guide seat.

7. A method for preparing a non-folded vacuum insulation panel based on any one of the non-folded sealing machines according to claims 1-6, characterized in that: Includes the following steps: S1, place the lower barrier film on the pull-down device of the non-folded edge sealing machine and tighten it, and place the upper barrier film on the pull-up device of the non-folded edge sealing machine and tighten it. S2, Place the core material on the lower barrier film; S3, vacuum the core material; S4, the upper barrier membrane moves downward and approaches the lower barrier membrane, so that the upper barrier membrane is directly opposite the lower barrier membrane; S5, the pressing device presses down on the upper barrier membrane, driving the core material to compress and then hold the pressure; S6, the upper barrier film continues to move downwards, so that the edge of the upper barrier film fits with the edge of the lower barrier film; S7, the heat sealing device heat seals the edge of the upper barrier film and the edge of the lower barrier film together to form a sealing edge; S8, the pressure device returns to its original position, and the vacuum insulation board is taken out after the vacuum is broken; S9, trim the edge banding of the vacuum insulation panel.

8. The method for preparing a non-folded vacuum insulation panel as described in claim 7, characterized in that: The downward pressure of the pressing device on the upper barrier film is greater than or equal to 1 atm. The heat sealing temperature when the heat sealing device heat seals the edge of the upper barrier film to the edge of the lower barrier film is 120 degrees Celsius to 180 degrees Celsius, and the heat sealing time is 10 seconds to 45 seconds.

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