Non-edge-folding packaging machine and non-edge-folding vacuum insulation panel preparation method

Abstract

The invention discloses an edge-folding-free 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 rack, a connecting column and an upper mounting rack, the lower end of the connecting column is connected with the lower mounting rack, and the upper end of the connecting column is connected with the upper mounting rack; the tensioning device comprises a pull-down device and a pull-up device, the pull-down device is arranged on the lower mounting frame to tension the lower barrier film, and the pull-up device is arranged on the upper mounting frame to tension the upper barrier film; the lifting device is arranged on the upper mounting frame, is connected with the pull-up device and drives the pull-up device to ascend and descend; the downward pressing device is arranged on the upper mounting frame to compress the core material, and the heat sealing device is arranged on the downward pressing device and / or the lower mounting frame. The invention further discloses a preparation method of the edge-folding-free vacuum heat insulation plate. By arranging the tensioning device, the barrier film is tensioned during packaging, and the core material does not need to be bagged, so that the manufactured vacuum insulated panel is small in virtual edge and does not need to be folded.

Description

Technical Field

[0001] The invention relates to the technical field of vacuum insulation panel preparation, and in particular to a non-folding packaging machine and a method for preparing a vacuum insulation panel. Background Art

[0002] Vacuum insulation panel is a new type of high-efficiency insulation material based on the principle of vacuum insulation. It combines the advantages of vacuum insulation, microporous insulation and multi-layer insulation, and thus has outstanding insulation effect.

[0003] The traditional method for preparing vacuum insulation panels is to place the core material in a barrier bag and then evacuate the bag. When the core material is evacuated and heat-sealed, the vacuum is broken and the core material is compressed to reduce its volume. After the vacuum insulation panel is prepared, it needs to be manually folded before use. The manual folding process will damage the barrier film, thereby affecting the performance of the vacuum insulation panel. Summary of the invention

[0004] Based on the above-mentioned problems existing in the prior art, the first purpose of the embodiments of the present application is to provide a non-folding packaging machine, which sets a tensioning device to tighten the barrier film during packaging, and there is no need to bag the core material, so that the virtual edge of the manufactured vacuum insulation board is small, and no folding is required.

[0005] The second purpose of the embodiment of the present application is to provide a method for preparing a non-folded vacuum insulation panel.

[0006] The technical solution adopted by the present application to solve its technical problem is: a non-folding packaging 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 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 pull-down device and an upper pull-up device, the pull-down device is arranged on the lower mounting frame to tighten the lower barrier film, and the upper pull-up device is arranged on the upper mounting frame to tighten the upper barrier film; the lifting device is arranged on the upper mounting frame, the lifting device is connected to the upper pull-up device and drives the upper pull-up device to rise and fall; 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.

[0008] Further, 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 arranged on the front side of the substrate, the rear tensioning mechanism is arranged on the rear side of the substrate, the left tensioning mechanism is arranged on the left side of the substrate, and the right tensioning mechanism is arranged on the right side of the substrate, and 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 seat, a slide rail, a tensioning seat and a tensioning spring, the fixed seat is arranged on the substrate, the slide rail is arranged on the substrate, the tensioning seat can be slidably arranged 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 seat 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 driving assembly, wherein the top plate is arranged on the tensioning seat, the top plate is located below the lower pressure block, a clamping cavity is formed between the top plate and the lower pressure block, and the driving assembly is arranged on the tensioning seat, the driving assembly is connected to the lower pressure block and drives the lower pressure block to approach or move away from the top plate.

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

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

[0013] Further, the lower pressure block is arranged on the driving frame through an adjusting component, and the adjusting component includes an adjusting rod, a first adjusting nut, a first adjusting block, a second adjusting block and a second adjusting nut. The adjusting rod is arranged on the lower pressure block and passes through the adjusting cavity. The first adjusting block is arranged on the adjusting rod, and the first adjusting nut is arranged on the adjusting rod, and the first adjusting block is pressed against the bottom of the first plate body and the second plate body. The second adjusting block is arranged on the adjusting rod, and the second adjusting nut is arranged on the adjusting rod, and the second adjusting block is pressed against the top of the first plate body and the second plate body.

[0014] Furthermore, the number of the front tensioning mechanisms is two, the number of the rear tensioning mechanisms is five, the number of the left tensioning mechanisms is two, and the number of the right tensioning mechanisms is two.

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

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

[0017] Furthermore, a lower mounting plate is arranged on the lower mounting frame, and a track is arranged on the lower mounting plate; a slider capable of sliding along the track is arranged on the base plate to pull the base plate out of the frame.

[0018] Furthermore, a handle is provided on the base plate for easy pulling out.

[0019] Furthermore, the side of the lower mounting plate forms a first plate body and a second plate body protruding from the side of the frame, the rails are arranged on the first plate body and the second plate body, and the rails of the first plate body and the rails of the second plate body are arranged in parallel.

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

[0021] Furthermore, a circular frame is provided on the lower mounting frame, and a limiting groove for limiting the core material is formed in the circular frame.

[0022] Furthermore, the heat sealing device is a PI heating film arranged on the circular frame.

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

[0024] Furthermore, the lifting device includes a motor, a worm gear lift and an upper mounting plate, the worm gear lift includes a lifting rod, the worm gear lift is connected to the motor and the lifting rod is driven by the motor to lift, and the upper mounting plate is connected to the lifting rod and lifts synchronously with the lifting rod.

[0025] Furthermore, the worm gear elevator is a four-platform U-shaped connected worm gear elevator, and the elevator has four lifting rods.

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

[0027] Furthermore, a circular pressing frame is provided at the bottom of the upper mounting plate for making the upper barrier film and the lower barrier film fit together.

[0028] Furthermore, a clearance groove for the pressure plate to pass through is formed in the circular pressure frame.

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

[0030] Furthermore, the pulling device includes a first tensioning mechanism and a second tensioning mechanism, the first tensioning mechanism is arranged on the lower side of the substrate, and the second tensioning mechanism is arranged on the upper side of the substrate; a guide assembly is arranged on the side of the substrate, and 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 pressing plate, the servo electric cylinder is fixed on the upper mounting frame, the pressing plate is connected to the servo electric cylinder through a coupling, and the pressing plate is driven to rise and fall by the servo electric cylinder.

[0032] Furthermore, the size of the pressing plate is consistent with the size of the core material.

[0033] Furthermore, a positioning assembly for positioning the core material is arranged on the substrate, and the positioning assembly includes a side positioning assembly for positioning the side of the core material and an end positioning assembly for positioning the end of the core material.

[0034] Furthermore, the side positioning assembly includes a side positioning rail, a side positioning seat, a first side positioning plate and a second side positioning plate, the side positioning rail is fixed on the base plate, the side positioning seat is movably set on the side positioning rail, the first side positioning plate is set 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 be against the side of the core material.

[0035] Furthermore, the end positioning assembly includes an end positioning rail, an end positioning seat, a first end positioning plate and a second end positioning plate, the end positioning rail is fixed on the base plate, the end positioning seat is movably set on the end positioning rail, the first end positioning plate is set 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 be abutted against the end of the core material.

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

[0037] The technical solution adopted by the present application to solve the technical problem is: a method for preparing a vacuum insulation panel without folding edges, comprising the following steps:

[0038] S1, placing the lower barrier film on a lower pull device of a non-folding packaging machine for tensioning, and placing the upper barrier film on an upper pull device of the non-folding packaging machine for tensioning;

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

[0040] S3, vacuuming the core material;

[0041] S4, the upper barrier film moves downward and approaches the lower barrier film, so that the upper barrier film faces the lower barrier film;

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

[0043] S6, the upper barrier film continues to move downward 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 sealed edge;

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

[0046] S9, cutting the sealed edge of the vacuum insulation panel.

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

[0048] Furthermore, the core material is centrifugal wool or ultra-fine rock wool or ultra-fine glass wool.

[0049] Furthermore, when evacuating the vacuum, the non-folding packaging machine is located in the vacuum chamber, and the vacuum is evacuated after the vacuum chamber door is closed.

[0050] Further, the lower barrier film is driven by the lifting device to move downward to approach the upper barrier film.

[0051] Furthermore, the pressing strength of the pressing device on the upper barrier film is greater than or equal to 1 atm.

[0052] Furthermore, when the heat sealing device heat-seals the edge of the upper barrier film with the edge of the lower barrier film, the heat sealing temperature is 120 degrees Celsius to 180 degrees Celsius, and the heat sealing time is 10 seconds to 45 seconds.

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

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

[0055] The beneficial effects of the present application are: when preparing a vacuum insulation panel, the edge of the lower barrier film is fixed on the pull-down device so that the pull-down device tightens the lower barrier film, and the edge of the upper barrier film is fixed on the pull-up device so that the pull-up device tightens the upper barrier film, so that when heat-sealing, the upper and lower barrier films are in a tensioned state, reducing the bending of the barrier film when heat-sealing, reducing the wrinkle phenomenon of the seal, and improving the heat-sealing effect. During production, since there is no need for bagging, the virtual edge between the core material and the edge sealing is small, and after appropriate cutting of the edge sealing, it can be achieved without folding. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] Figure 1 It is a structural schematic diagram of the non-folding packaging machine in this application;

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

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

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

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

[0061] Figure 6 This is a schematic diagram of the connection between the lifting device and the pulling device in this application from another angle.

[0062] Description of Reference Numerals

[0063] Frame 1, lower mounting frame 11, connecting column 12, upper mounting frame 13, lower mounting plate 14, track 141, circular frame 15, limiting groove 16, tensioning device 2, lower pulling device 2a, upper pulling 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 pressing block 226, driving assembly 227, tensioning frame 2271, driving frame 2272, driving handle 2273, connecting rod 2274, adjusting assembly 228, adjusting 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, circular pressing frame 331, pressing device 4, servo electric cylinder 41, pressing plate 42, heat sealing device 5. DETAILED DESCRIPTION

[0064] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below through specific implementation modes in conjunction with the accompanying drawings.

[0065] like Figures 1 to 6As shown, a non-folding packaging 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 upper pulling device 2b, the pulling device 2a is arranged on the lower mounting frame 11 to tighten the lower barrier film, and the upper pulling device 2b is arranged on the upper mounting frame 13 to tighten the upper barrier film; the lifting device 3 is arranged on the upper mounting frame 13, the lifting device 3 is connected to the upper pulling device 2b and drives the upper pulling device 2b to rise and fall; the pressing device 4 is arranged on the upper mounting frame 13 to compress the core material, and the heat sealing device 5 is arranged on the pressing device 4 and / or the lower mounting frame 11.

[0066] Thus, the present invention relates to a non-folding packaging machine. When preparing a vacuum insulation panel, the edge of the lower barrier film is fixed on the lower pull-down device 2a, so that the lower pull-down device 2a tightens the lower barrier film, and the edge of the upper barrier film is fixed on the upper pull-up device 2b, so that the upper pull-up device 2b tightens the upper barrier film, so that when heat-sealing, the upper and lower barrier films are in a tensioned state, reducing the film material bending phenomenon when the barrier film is heat-sealed, reducing the seal wrinkle phenomenon, and improving the heat-sealing effect. During production, since there is no need for bagging, the virtual edge between the core material and the edge sealing is small, and after appropriate cutting of the edge sealing, it can be achieved without folding.

[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 arranged on the front side of the substrate 21, the rear tensioning mechanism 22b is arranged on the rear side of the substrate 21, the left tensioning mechanism 22c is arranged on the left side of the substrate 21, and the right tensioning mechanism 22d is arranged on the right side of the substrate 21, and 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 making a vacuum insulation panel, the lower pulling device 2a tightens the lower barrier film, and the upper pulling 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, thereby tightening the edges of the barrier film, reducing curling of the barrier film during heat sealing, reducing sealing wrinkles, and improving the heat sealing effect.

[0069] like Figure 4As shown, in this embodiment, the tensioning mechanism 22 includes a fixed seat 221, a slide rail 222, a tensioning seat 223 and a tensioning spring 224. The fixed seat 221 is arranged on the base plate 21, the slide rail 222 is arranged on the base plate 21, the tensioning seat 223 can be slidably arranged 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 seat 221 so that the tensioning seat 223 has a tendency to move outward. A connecting column (not shown in the figure) can be arranged on the fixed seat 221 and the tensioning seat 223, and the tensioning spring 224 is connected to the connecting column to realize the tendency of the tensioning seat 223 to move outward. By arranging the tensioning spring 224, after the upper barrier film and the lower barrier film are pulled, the tensioning spring 224 makes the tensioning seat 223 have a tendency to move outward, thereby driving the barrier film to be pulled outward, tightening the barrier film, and reducing the curling phenomenon generated when the barrier film is heat-sealed.

[0070] When the pressing plate 42 compresses the core material through the upper barrier film, the upper barrier film will deform when pressed downward. By providing the tensioning mechanism 22, the upper barrier film is always in a tensioned state, thereby effectively reducing the curling phenomenon caused by heat sealing of the barrier film.

[0071] In this embodiment, the tensioning mechanism 22 also includes a top plate 225, a lower pressure block 226 and a driving assembly 227. The top plate 225 is arranged on the tensioning seat 223, and the top plate 225 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 driving assembly 227 is arranged on the tensioning seat 223, and the driving assembly 227 is connected to the lower pressure block 226 and drives the lower pressure block 226 to approach or move away from the top plate 225.

[0072] After placing the upper barrier film or the lower barrier film between the lower pressing block 226 and the top plate 225, the lower pressing block 226 is moved close to the top plate 225 by operating the driving assembly 227, so that the upper side of the barrier film is closely attached to the lower pressing block 226, and the lower side of the barrier film is closely attached to the top plate 225, so that the barrier film is clamped. After the vacuum insulation panel is manufactured, the lower pressing block 226 is moved away from the top plate 225 by operating the driving assembly 227, so that the manufactured vacuum insulation panel can be taken out.

[0073] Specifically, the driving assembly 227 includes a tensioning frame 2271, a driving frame 2272, a driving handle 2273 and a connecting rod 2274. The tensioning frame 2271 is set on the tensioning seat 223, the driving frame 2272 is rotatably set on the tensioning frame 2271, a lower pressure block 226 is set on the driving frame 2272, the end of the driving handle 2273 is rotatably set on the driving frame 2272, one end of the connecting rod 2274 is rotatably connected to the middle part of the driving 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 driving handle 2273 to realize the rotation of the driving frame 2272, and the lower pressing block 226 is set on the driving frame 2272. The rotation of the driving frame 2272 drives the lower pressing block 226 to approach or move away from the top plate 225 to clamp or release the barrier film.

[0075] In some examples, the driving frame 2272 includes a first plate body and a second plate body, the first plate body and the second plate body are arranged opposite to each other, and an adjustment cavity is formed between the first plate body and the second plate body. The lower pressing block 226 is arranged on the driving frame 2272 through the adjustment assembly 228, specifically, the adjustment assembly 228 includes an adjustment rod 2281, a first adjustment nut 2282, a first adjustment block 2283, a second adjustment block 2284, and a second adjustment nut 2285, the adjustment rod 2281 is arranged on the lower pressing block 226 and penetrates into the adjustment cavity, the first adjustment block 2283 is arranged on the adjustment rod 2281, the first adjustment nut 2282 is arranged on the adjustment rod 2281, and the first adjustment block 2283 is pressed against the bottom of the first plate body and the second plate body, the second adjustment block 2284 is arranged on the adjustment rod 2281, and the second adjustment nut 2285 is arranged on the adjustment rod 2281, and the second adjustment block 2284 is pressed against the top of the first plate body and the second plate body.

[0076] By setting the adjustment cavity in a rectangular shape, the position of the lower pressing block 226 can be adjusted, which is suitable for barrier films of different specifications. After the adjustment rod 2281 is adjusted to a suitable position in the adjustment cavity, the first adjustment nut 2282 and the second adjustment nut 2285 are tightened to fix the adjustment rod 2281 and prevent the lower pressing block 226 from being displaced.

[0077] Furthermore, the front tensioning mechanism 22a, the rear tensioning mechanism 22b, the left tensioning mechanism 22c and the right tensioning mechanism 22d are provided in plurality, such as two front tensioning mechanisms 22a, five rear tensioning mechanisms 22b, two left tensioning mechanisms 22c and two right tensioning mechanisms 22d. By providing a plurality of front tensioning mechanisms 22a, rear tensioning mechanisms 22b, left tensioning mechanisms 22c and right tensioning mechanisms 22d, the barrier film can be tightened at multiple locations, and the tightening effect is good.

[0078] Preferably, a first soft pad is provided at the bottom of the lower pressing 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 closely attached to the upper side of the barrier film, and the second soft pad is closely attached to the lower side of the barrier film, thereby effectively reducing the situation where the barrier film surface is damaged when the barrier film is tightened.

[0079] As another embodiment, a long pressing clamp is provided on the tensioning seat 223. By operating the long pressing clamp, the barrier film can also be tightened, and the operation of the long pressing 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 capable of sliding 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 out. The side of the lower mounting plate 14 forms a first plate body and a second plate body protruding from the side of the frame 1, and the track 141 is provided on the first plate body and the second plate body, and the track 141 of the first plate body and the track 141 of the second plate body are arranged in parallel.

[0081] When in use, the handle 211 is used to quickly pull the substrate 21 out of the frame 1, so that the barrier film is fixed on the tensioning mechanism 22, and the operation is relatively convenient. By setting the track 141 and the slider, the process of pulling out or pushing in the substrate 21 is smoother.

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

[0083] In this embodiment, a circular frame 15 is provided on the lower mounting frame 11, and a limiting groove 16 for limiting the core material is formed in the circular frame 15. By providing the limiting groove 16, it is convenient to limit the core material, so that when the pressing plate 42 is pressed down, the core material is located in the limiting groove 16, wherein the size of the limiting groove 16 is slightly larger than the size of the core material, so as to ensure that the core material is pressed in the limiting groove 16.

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

[0085] Wherein, a high temperature ironing cloth or a knurled rubber pad is provided on the circular frame 15, so that the sealing area forms a textured rough surface, which is convenient for absorbing defects generated during sealing.

[0086] In some examples, the lifting device 3 includes a motor 31, a worm gear lift 32 and an upper mounting plate 33. The worm gear lift 32 includes a lifting rod 321. The worm gear lift 32 is connected to the motor 31 and the lifting rod 321 is driven by the motor 31 to be lifted and lowered. The upper mounting plate 33 is connected to the lifting rod 321 and is lifted and lowered synchronously with the lifting rod 321. When the upper barrier film needs to be lowered, the motor 31 drives the worm gear lift 32 to work, thereby driving the lifting rod 321 to be lowered. The lifting rod 321 is lowered to make the upper mounting plate 33 lower, so that the upper barrier film is close to and abuts against the lower barrier film.

[0087] The worm gear lift 32 is a four-platform U-shaped worm gear lift 32, and has four lift rods 321. The four lift rods 321 are lifted and lowered synchronously, so that the lifting process of the upper mounting plate 33 is smoother. In this example, a pressure sensor is provided between the upper mounting plate 33 and the lift rods 321, and the pressure is controlled by providing the pressure sensor.

[0088] In this embodiment, a circular pressing frame 331 for laminating the upper barrier film with the lower barrier film is provided at the bottom of the upper mounting plate 33. By providing the circular pressing frame 331, after the upper mounting plate 33 is lowered, the circular pressing frame 331 can be pressed on the upper barrier film to laminat the edge of the upper barrier film with the edge of the lower barrier film, wherein a PI heating film can be provided on the circular pressing frame 331 to heat-seal the edge of the upper barrier film with the edge of the lower barrier film.

[0089] In order to facilitate the compression of the core material by the pressing plate 42, a clearance groove for the pressing plate 42 to pass through is formed in the circular pressing frame 331. Further, another track is arranged at the bottom of the upper mounting plate 33 to realize the pulling device 2b to be pulled out, so as to facilitate the fixing of the upper barrier film.

[0090] In some examples, the pulling device 2b includes a first tensioning mechanism 2b1 and a second tensioning mechanism 2b2, the first tensioning mechanism 2b1 is arranged on the lower side of the substrate 21, and the second tensioning mechanism 2b2 is arranged on the upper side of the substrate 21; a guide assembly 23 is arranged on the side of the substrate 21, and 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 providing the second tensioning mechanism 2b2, when fixing the upper barrier film, the upper barrier film can be wound around the guide rod 233 and then fixed from the upper part of the substrate 21, thereby making the operation process of fixing the upper barrier film more convenient.

[0092] Preferably, the pressing device 4 includes a servo electric cylinder 41 and a pressing plate 42. The servo electric cylinder 41 is fixed on the upper mounting frame 13. The pressing plate 42 is connected to the servo electric cylinder 41 through a coupling, and the pressing plate 42 is driven to rise and fall by the servo electric cylinder 41. By setting the servo electric cylinder 41, the pressing plate 42 is lifted and lowered, thereby compressing the core material. The size of the pressing plate 42 is consistent with the size of the core material, so that the core material can be compressed in the limit groove 16.

[0093] In order to facilitate the positioning of the core material, a positioning component for positioning the core material is provided on the substrate 21, and 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. When in use, the side positioning component 24 positions the side of the core material, and the end positioning component 25 positions the end of the core material, thereby realizing the positioning of the core material so that the core material is just located 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 arranged on the side positioning track 241, the first side positioning plate 243 is arranged on the side positioning seat 242, the second side positioning plate 244 is rotatably connected to the first side positioning plate 243, and the second side positioning plate 244 can abut against the side of the core material. When in use, the side positioning seat 242 can be slid to the end along the side positioning track 241, and then the second side positioning plate 244 is rotated so that the side of the second side positioning plate 244 abuts against the side of the core material to achieve positioning of the side of the core material.

[0095] Further, 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 flat plate 254. The end positioning track 251 is fixed on the base plate 21, the end positioning seat 252 is movably arranged on the end positioning track 251, the end positioning connecting plate 253 is arranged on the end positioning seat 252, and the end positioning flat plate 254 is arranged on the end positioning connecting plate 253. The end positioning flat plate 254 can abut against the end of the core material. When in use, the end positioning seat 252 is moved so that the end positioning flat plate 254 abuts against the end of the core material to achieve the end of the core material. By positioning the end and side of the core material, the core material is just located above the limiting groove 16, which is convenient for compressing the core material in 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, so as to achieve the positioning of two adjacent positions of the core material.

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

[0097] S1, place the lower barrier film on the lower pull-down device 2a of the non-folding packaging machine for tensioning, and place the upper barrier film on the upper pull-down device 2b of the non-folding packaging machine for tensioning; S2, place the core material on the lower barrier film; S3, evacuate the core material; S4, the upper barrier film moves downward and approaches the lower barrier film, so that the upper barrier film is opposite to the lower barrier film; S5, the downward pressing device 4 presses down on the upper barrier film, driving the core material to compress and then maintain the pressure; S6, the upper barrier film continues to move downward, so that the edge of the upper barrier film fits 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 sealed edge; S8, the downward pressing device 4 returns to its position, and the vacuum insulation board is taken out after breaking the vacuum; S9, the sealed edge of the vacuum insulation board is cut.

[0098] In step S4, the upper barrier film moves downward and approaches the lower barrier film, so that the upper barrier film is directly opposite to the lower barrier film. If the upper barrier film is just attached to the core material, the downward pressure device 4 presses down on the upper barrier film, driving the core material to compress and then maintain the pressure. At this time, the upper barrier film is in a tensioned state. When the upper barrier film continues to move downward and fits with the lower barrier film, under the action of the tensioning mechanism 22, the upper barrier film is always in a tensioned state, reducing the bending of the film material when the barrier film is heat-sealed, reducing the wrinkle phenomenon of the seal, and improving the heat-sealing effect. Through the above steps, when making the vacuum insulation board, there is no need to carry out the bagging action, so that the virtual edge is smaller, and finally the sealing edge of the vacuum insulation board is cut to achieve no folding.

[0099] Furthermore, before placing the core material on the lower barrier film, a getter and a desiccant are placed on the core material, and the water vapor retained in the core material can be adsorbed in time by providing the getter and the desiccant. In this embodiment, the core material is centrifugal wool or ultrafine rock wool or ultrafine glass wool.

[0100] Preferably, when vacuuming, the non-folding packaging machine is located in the vacuum chamber, and vacuuming is performed after the vacuum chamber door is closed to achieve vacuuming of the core material. Further, the lower barrier film moves downward under the drive of the lifting device 3 to approach the upper barrier film.

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

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

[0103] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent transformations made using the contents of the present invention's specification and drawings, or directly or indirectly applied in related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A non-folding packaging machine, characterized in that: It 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 pull-down device and an upper pull-up device, the pull-down device is arranged on the lower mounting frame to tighten the lower barrier film, and the upper pull-up device is arranged on the upper mounting frame to tighten the upper barrier film; the lifting device is arranged on the upper mounting frame, the lifting device is connected to the upper pull-up device and drives the upper pull-up device to rise and fall; 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.

2. The non-folding packaging machine according to claim 1, characterized in that: The tensioning device includes a substrate and a tensioning mechanism, and 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 arranged on the front side of the substrate, the rear tensioning mechanism is arranged on the rear side of the substrate, the left tensioning mechanism is arranged on the left side of the substrate, and the right tensioning mechanism is arranged 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.

3. The non-folding packaging machine according to claim 2, characterized in that: The tensioning mechanism includes a fixed seat, a slide rail, a tensioning seat and a tensioning spring. The fixed seat is arranged on a base plate, the slide rail is arranged on the base plate, the tensioning seat is slidably arranged 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 seat so that the tensioning seat has a tendency to move outward.

4. The non-folding packaging machine according to claim 1, characterized in that: A lower mounting plate is arranged on the lower mounting frame, and a track is arranged on the lower mounting plate; a sliding block capable of sliding along the track is arranged on the base plate so as to pull the base plate out of the frame.

5. The non-folding packaging machine according to claim 1, characterized in that: A circular frame is arranged on the lower mounting frame, and a limiting groove for limiting the core material is formed in the circular frame.

6. The non-folding packaging machine according to claim 1, characterized in that: The heat sealing device is a PI heating film arranged on the circular frame.

7. The non-folding packaging machine according to claim 1, characterized in that: The lifting device includes a motor, a worm gear lift and an upper mounting plate. The worm gear lift includes a lifting rod. The worm gear lift is connected to the motor and the lifting rod is driven by the motor to lift. The upper mounting plate is connected to the lifting rod and lifts synchronously with the lifting rod.

8. The non-folding packaging machine according to claim 1, characterized in that: The pulling device includes a first tensioning mechanism and a second tensioning mechanism, the first tensioning mechanism is arranged on the lower side of the substrate, and the second tensioning mechanism is arranged on the upper side of the substrate; a guide assembly is arranged on the side of the substrate, and 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.

9. A method for preparing a non-folded vacuum insulation panel, characterized in that: The following steps are involved: S1, placing the lower barrier film on a lower pull device of a non-folding packaging machine for tensioning, and placing the upper barrier film on an upper pull device of the non-folding packaging machine for tensioning; S2, placing the core material on the lower barrier film; S3, vacuuming the core material; S4, the upper barrier film moves downward and approaches the lower barrier film, so that the upper barrier film faces the lower barrier film; S5, the pressing device presses down on the upper barrier film, driving the core material to compress and then maintain the pressure; S6, the upper barrier film continues to move downward 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 sealed edge; S8, the pressing device returns to its original position, and the vacuum insulation panel is taken out after the vacuum is broken; S9, cutting the sealed edge of the vacuum insulation panel.

10. The method for preparing a vacuum insulation panel without edge folding according to claim 9, characterized in that: The pressing strength of the pressing device on the upper barrier film is greater than or equal to 1atm. The heat sealing temperature when the heat sealing device heat seals the edge of the upper barrier film with 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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