Edge sealing device and method for processing vacuum insulation panels

Abstract

The present invention provides an edge sealing device and method for processing a vacuum insulation panel, which relates to the technical field of edge sealing devices, and comprises an insulation board composed of an upper diaphragm, a core plate and a lower diaphragm stacked in sequence, and a heat sealing device placed in a vacuum chamber, wherein the heat sealing device heat-seals the edges of the upper diaphragm and the lower diaphragm, and the heat sealing device comprises a side sealing member and a pair of end sealing members, wherein the side sealing member comprises a film guide frame for conveying the upper diaphragm, the core plate and the lower diaphragm, and a side sealing plate arranged on the side of the film guide frame, wherein the side sealing plate can move vertically and heat-seal the sides of the upper diaphragm and the lower diaphragm; the end sealing member comprises at least one end sealing plate covering the upper diaphragm and the lower diaphragm, and the pair of end sealing plates can move vertically and heat-seal the redundant parts of the upper diaphragm and the lower diaphragm on both sides of the core plate along the conveying direction; the whole process is carried out on an assembly line, without the need to clamp and place the diaphragm, thus saving processing steps, and after the upper diaphragm and the lower diaphragm are heat-sealed, a driving roller can be used for conveying, thereby greatly improving production efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of edge sealing devices, and in particular to an edge sealing device and method for processing vacuum insulation panels. Background Art

[0002] Vacuum Insulation Panel (VIP) is a new type of high-efficiency insulation material with a very low thermal conductivity, usually less than 4mW / (m·K) (20℃). It is made using the principle of vacuum insulation, similar to the insulation principle of a thermos. The structure of VIP mainly consists of three parts: the insulation material of the core, the gas adsorption material (Getter) and the closed gas barrier film (Barrier). VIP is a high-tech environmentally friendly insulation material that will not cause environmental pollution during the manufacturing and post-processing process. It is widely used in insulation equipment such as refrigerators, freezers, refrigerators, cold storage, electric water heaters, etc. It is currently the most advanced and efficient insulation and heat insulation material used in "refrigeration, freezing, insulation" and other systems.

[0003] Vacuum insulation panels isolate heat conduction by maximizing the internal vacuum degree to achieve the purpose of heat preservation and energy saving. There are three key control points in vacuum insulation panel technology: vacuum degree, high barrier film and packaging after vacuuming. The vacuum degree in the vacuum panel is generally controlled below 5Pa. The high barrier film is the key to ensuring the effectiveness of VIP, and the quality of the packaging is directly related to the quality of the vacuum panel.

[0004] At present, when producing vacuum insulation panels, a shell with a concave bottom is used, which is slightly larger than the core board so that the core board can be completely stored and room for heat sealing is left at the edge. When the barrier film is completely covered on the core board, a vacuum environment is formed by a vacuum pumping device to achieve the required vacuum degree. The heat sealer heat seals the edge of the barrier film to ensure that the edge of the barrier film is tightly combined with the edge of the shell. After the heat sealing is completed, the vacuum insulation panel is finally packaged. Specifically, a vacuum four-side sealing device for vacuum insulation panel processing and a method of using the same are disclosed in Chinese patent announcement No. CN117450360A. The device uses a bottom shell to accommodate the core board, and a heat sealing assembly is used to rise and press the four edges of the bottom shell and the barrier film to heat seal. The bottom shell, core board and barrier film are used as raw materials for the processing and production of vacuum insulation panels, which can improve production efficiency.

[0005] There are still some shortcomings in the production process. Specifically, since the shell is placed on the core plate and a barrier film is provided above the core plate, and since the bottom shell needs to be embedded in the top of the tray, the shell needs to be loaded and unloaded each time it is heat-sealed evenly. As a result, when the vacuum insulation panel is heat-sealed, it takes a lot of time to load and unload the shell, which affects the production efficiency. Summary of the invention

[0006] The present invention provides an edge sealing device and method for processing a vacuum insulation panel, which specifically solves the technical problem that a bottom shell needs to be embedded in the top of a tray so that each heat sealing is uniform and loading and unloading operations are required on the shell, which makes the shell loading and unloading of the vacuum insulation panel take a lot of time when heat sealing, thus affecting the production efficiency.

[0007] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0008] A vacuum insulation panel edge sealing device comprises an insulation panel composed of an upper diaphragm, a core plate and a lower diaphragm stacked in sequence, and a heat sealing device placed in a vacuum chamber, wherein the heat sealing device heat-seals the edges of the upper diaphragm and the lower diaphragm, and the heat sealing device comprises side sealing components, including a film guide frame for conveying the upper diaphragm, the core plate and the lower diaphragm, and side sealing plates arranged on the sides of the film guide frame, wherein the side sealing plates can move vertically and heat-seal the sides of the upper diaphragm and the lower diaphragm; and a pair of end sealing components, including at least one end sealing plate covering the upper diaphragm and the lower diaphragm, wherein the pair of end sealing plates can move vertically and heat-seal the redundant parts of the upper diaphragm and the lower diaphragm on both sides of the core plate along the conveying direction.

[0009] Preferably, the lower diaphragm is provided with a groove for accommodating the core plate, and the side is provided with a step for heat sealing of the side sealing plate.

[0010] Preferably, the film guide frame is configured to conform to the cross section of the lower diaphragm.

[0011] Preferably, the side sealing member further comprises a heat sealing frame arranged outside the film guiding frame, and the side sealing plate is arranged on the heat sealing frame.

[0012] Preferably, the end seal also includes a folding component provided on the side of the lower diaphragm, and the folding component can press against the groove wall outside the lower diaphragm along the vertical direction of conveying and fold and deform the redundant part of the lower diaphragm.

[0013] Preferably, the folding component is connected to a slider that moves along the width direction of the lower diaphragm, and a connecting rod is rotatably installed between the slider and the end sealing plate.

[0014] Preferably, the end sealing member further comprises a mounting frame and a pair of side fixing plates arranged on the side of the mounting frame, the end sealing plate is connected to the mounting frame, and the sliding block is slidably connected to the side fixing plates.

[0015] Preferably, the folding parts are a pair disposed opposite to each other and facing the intersection area between the lower diaphragm step and the groove wall.

[0016] Preferably, the heat sealing device further comprises a guide member arranged behind the side sealing member and / or the end sealing member, and the guide member comprises a belt, a side plate arranged on the side of the belt, and a guide wheel rollingly arranged on the top end surface of the side plate.

[0017] According to the edge sealing method of the vacuum insulation panel edge sealing device, the specific operation steps of the edge sealing method are as follows:

[0018] S1: The chamber where the heat sealing device is located is evacuated, and the upper diaphragm, the core plate and the lower diaphragm are stacked in sequence and gradually transported to the side sealing plate by the film guide frame;

[0019] S2: The side sealing plate moves vertically to hot-press the overlapping part of the upper diaphragm and the lower diaphragm, and the upper diaphragm and the lower diaphragm are sealed along the sides of the conveying direction, and the core plate is wrapped between the two;

[0020] S3: The upper diaphragm, the core plate and the lower diaphragm are transported to the end seals, and the core plate is located between a pair of end seals;

[0021] S4: The end sealing plate moves vertically and heat-seals the redundant parts of the upper diaphragm and the lower diaphragm on both sides of the core plate along the conveying direction. The core plate is wrapped in the cavity between the upper diaphragm and the lower diaphragm to form an insulating plate.

[0022] It can be seen from the above technical solutions that the present invention has the following beneficial effects:

[0023] The present invention separates the thermal insulation board into an upper diaphragm, a core plate and a lower diaphragm, and gradually transports them to the side sealing parts and the end sealing parts. The side sealing parts use the side sealing plates to heat-seal the overlapping parts of the upper diaphragm and the lower diaphragm. The core plate is clamped between the upper diaphragm and the lower diaphragm, and the upper diaphragm, the lower diaphragm and the core plate after heat sealing are gradually transported to the end sealing parts. The end sealing parts use the end sealing plates to heat-seal the upper diaphragm and the lower diaphragm on both sides of the core plate, so that the upper diaphragm and the lower diaphragm are heat-sealed and disconnected along the width direction to form a separate thermal insulation board, and the unloading operation can be carried out. The whole process is carried out on the drum conveying of the assembly line, without the need to clamp and place the diaphragm. After the upper diaphragm and the lower diaphragm are heat-sealed, they are guided and transported by the driving roller, without spending too much time waiting, saving processing steps and greatly improving production efficiency.

[0024] The present invention sets a space for accommodating the core plate in the lower diaphragm and sets a step. Only the step parts of the upper diaphragm and the lower diaphragm are heat-sealed to ensure that the heat-sealed parts are separated from the core plate to avoid misalignment of the core plate and the upper and lower diaphragms during plane heat sealing. At the same time, the setting of the step further improves the quality of the side heat sealing.

[0025] The present invention arranges a folding component in the end seal so that the folding component can be pushed into the outer wall of the groove of the lower diaphragm along the width direction, so that the lower diaphragm is gradually folded and flattened to avoid wrinkles on the upper diaphragm or the lower diaphragm, and also avoids defects in heat sealing caused by unevenness, thereby greatly improving the heat sealing quality of its end.

[0026] The present invention provides a guide member, which transports the upper diaphragm and the lower diaphragm to ensure that the diaphragms are heat-sealed. The guide wheels press the steps of the upper diaphragm and the lower diaphragm to avoid misalignment of the upper diaphragm and the lower diaphragm, further reducing the risk of air leakage at the heat-sealing point of the upper diaphragm and the lower diaphragm, and improving the overall heat-sealing quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 It is a schematic structural diagram of the side seal of the present invention;

[0029] Figure 3 It is a schematic diagram of the explosion structure of the thermal insulation board of the present invention;

[0030] Figure 4 It is a schematic structural diagram of the end seal of the present invention;

[0031] Figure 5 It is a schematic diagram of the position structure of the end seal and the insulation board of the present invention;

[0032] Figure 6 It is a schematic structural diagram of the guide member of the present invention.

[0033] In the figure: 10, film material; 20, side sealing member; 201, heat sealing frame; 202, upper side sealing plate; 203, lower side sealing plate; 204, film guide frame; 205, clamping wheel; 206, first telescopic cylinder; 30, guide member; 301, bottom plate; 302, bracket; 303, guide wheel; 304, side plate; 305, belt; 40, end sealing member; 401, mounting frame; 402, second telescopic cylinder; 403, upper end sealing plate; 404, connecting rod; 405, third telescopic cylinder; 406, slider; 407, side fixing plate; 408, bottom frame; 409, fourth telescopic cylinder; 410, lower end sealing plate; 411, folding component; 50, insulation board; 501, upper diaphragm; 502, core plate; 503, lower diaphragm. DETAILED DESCRIPTION

[0034] A preferred embodiment of the present invention is described in detail below with reference to the accompanying drawings.

[0035] like Figure 1-Figure 4As shown, a vacuum insulation panel edge sealing device includes an insulation board 50 which is stacked in sequence by an upper diaphragm 501, a core plate 502 and a lower diaphragm 503, and a heat sealing device placed in a vacuum chamber, the heat sealing device heat-seals the edges of the upper diaphragm 501 and the lower diaphragm 503, the heat sealing device includes a side sealing member 20 and a pair of end sealing members 40, the side sealing member 20 includes a film guide frame 204 for conveying the upper diaphragm 501, the core plate 502 and the lower diaphragm 503, and a side sealing plate arranged on the side of the film guide frame 204, the side sealing plate can move vertically and heat-seal the side of the upper diaphragm 501 and the lower diaphragm 503; the end sealing member 40 includes at least one end sealing plate covering the upper diaphragm 501 and the lower diaphragm 503, the pair of end sealing plates can move vertically and heat-seal the redundant parts of the upper diaphragm 501 and the lower diaphragm 503 on both sides of the core plate 502 along the conveying direction; wherein, the edge sealing device includes a supporting frame, a heat sealing member 20, and a pair of end sealing members 40. The device is installed on the supporting frame, and the side sealing parts 20 and the end sealing parts 40 are both in a vacuum state. The film guide frame 204 is provided with driving rollers on the upper and lower sides of the frame body, and the driving rollers are used to drive the upper diaphragm 501, the lower diaphragm 503 and the core plate 502 in the middle of the two to be transported toward the side sealing plate. The end sealing plate is arranged along the width direction of the upper diaphragm 501 and the lower diaphragm 503, and it heat-seals the upper diaphragm 501 and the lower diaphragm 503 vertically, so that the upper diaphragm 501 and the lower diaphragm 503 at both ends of the core plate 502 can be heat-sealed and formed. The entire heat sealing method is fast. Only during the transportation of the upper diaphragm 501 and the lower diaphragm 503, the side sealing plate and the end sealing plate are combined to quickly produce the insulation board 50 in the vacuum chamber, thereby greatly improving the production efficiency. At the same time, the driving roller is used to transport the upper diaphragm 501 and the lower diaphragm 503, so that the transportation process can be guaranteed after heat sealing.

[0036] like Figure 2 and Figure 3 As shown, the lower diaphragm 503 is provided with a groove for accommodating the core plate 502, and the side is provided with a step for heat sealing of the side sealing plate. Specifically, the middle part of the lower diaphragm 503 is recessed downward to form a groove body for accommodating the core plate 502. At the same time, its side is heat-sealed with the upper diaphragm 501 to ensure that the heat-sealed part and the core plate 502 are separated from each other to avoid the misalignment of the core plate 502 with the upper diaphragm 501 and the lower diaphragm 503 during plane heat sealing, which may affect the core plate 502. The cross-section of the lower diaphragm 503 is preferably concave.

[0037] The film guide frame 204 is configured to imitate the cross-section of the lower diaphragm 503. Specifically, when the lower diaphragm 503 is concave, the film guide frame 204 is also concave, which is specifically adapted to the shape of the lower diaphragm 503. It can not only limit the transmission of the lower diaphragm 503, but also block the position of the core plate 502, thereby preventing the core plate 502 from shifting on the lower diaphragm 503 and causing heat sealing misalignment.

[0038] like Figure 1-Figure 3As shown, the side sealing member 20 also includes a heat sealing frame 201 arranged outside the film guide frame 204, and the side sealing plate is arranged on the heat sealing frame 201, wherein the heat sealing frame 201 is installed on the load-bearing frame, and the side sealing plate can be arranged on the upper side and / or the lower side of the step of the upper diaphragm 501 and the lower diaphragm 503. Preferably, the side sealing plate is arranged on the upper and lower sides of the step of the upper diaphragm 501 and the lower diaphragm 503. Specifically, the side of the heat sealing frame 201 is provided with a lower side sealing plate 203 and an upper side sealing plate 202, and the upper side sealing plate 202 can heat-seal the step portion of the upper diaphragm 501 and the lower diaphragm 503 in the vertical direction, and the lower side sealing plate 203 is fixedly installed on the heat sealing frame 201, and the heat sealing frame 2 01 is also provided with a first telescopic cylinder 206 at the top, and the telescopic end of the first telescopic cylinder 206 is connected to the upper sealing plate 202, which drives the upper sealing plate 202 to move toward the lower sealing plate 203, so that the upper diaphragm 501 and the lower diaphragm 503 are heat-sealed and formed; on this basis, a telescopic cylinder can also be installed on the lower sealing plate 203, so that the upper sealing plate 202 and the lower sealing plate 203 can move toward each other through the telescopic cylinder to achieve heat sealing; if a single heat sealing plate is used, it is only necessary to set a movable heat sealing plate at the step of the upper diaphragm 501 and the lower diaphragm 503, and drive it through the first telescopic cylinder 206, so that the heat sealing plate can be against the step on the side of the heat sealing frame 201.

[0039] like Figure 1 , Figure 3-Figure 5 As shown, the end sealing member 40 also includes a mounting frame 401, a pair of side fixing plates 407 arranged on the side of the mounting frame 401, the end sealing plate is connected to the mounting frame 401, and the slider 406 is slidably connected to the side fixing plate 407; the folding component 411 is connected to the slider 406 that moves along the width direction of the lower diaphragm 503, and a connecting rod 404 is rotatably installed between the slider 406 and the end sealing plate, wherein the mounting frame 401 and the side fixing plate 407 are both installed on the bearing frame, and the end sealing plate is slidably connected to the mounting frame 401 along the vertical direction. The end sealing plate can be single or a pair, preferably a pair, and the slider 406 and The side fixing plate 407 slides, preferably using a guide rail for sliding, and the slider 406 helps the folding component 411 to move back and forth. The connecting rod 404 is connected to the slider 406. When the end sealing plate is hot-pressed in the vertical direction, it drives the folding component 411 away from the lower diaphragm 503 through the connecting rod 404 and the slider 406, which can avoid heat-sealing the upper diaphragm 501 and the lower diaphragm 503. When the end sealing plate is reset after hot-pressing in the vertical direction, the end sealing plate drives the folding component 411 to move toward the groove wall of the lower diaphragm 503 through the connecting rod 404 and the slider 406, so as to form a staggered linkage effect of hot pressing and folding;

[0040] In order to further adapt to the production of insulation boards 50 of different widths, a third telescopic cylinder 405 is installed on the slider 406, and the output end of the third telescopic cylinder 405 is fixed to the folding component 411, so that the third telescopic cylinder 405 can make corresponding adjustments to the outer wall of the groove where the folding component 411 presses against the lower diaphragm 503.

[0041] Specifically, a base frame 408 is also installed at the lower end of the mounting frame 401, and a fourth telescopic cylinder 409 and a second telescopic cylinder 402 driven in a vertical manner are respectively installed on the base frame 408 and the mounting frame 401, and the output shafts of the fourth telescopic cylinder 409 and the second telescopic cylinder 402 are arranged opposite to each other, and are respectively fixed with a lower end sealing plate 410 and an upper end sealing plate 403, and the upper end sealing plate 403 and the lower end sealing plate 410 are respectively located on the upper and lower sides of the lower diaphragm 503 and the upper diaphragm 501, and the shaft output of the fourth telescopic cylinder 409 and the second telescopic cylinder 402 causes the lower end sealing plate 410 and the upper end sealing plate 403 to approach each other, and heat-seal the redundant parts of the lower diaphragm 503 and the upper diaphragm 501.

[0042] If a single end sealing plate is used, it only needs to be driven by a telescopic cylinder, and the lower diaphragm 503 and the upper diaphragm 501 are heat-sealed against the abutment plate. This method can easily cause the upper diaphragm 501 and the lower diaphragm 503 to be squeezed and offset, so it is preferred to use a pair of end sealing plates.

[0043] For the above method, no matter a single end sealing plate or a pair of end sealing plates is used, the slider 406 is connected to the end of at least one end sealing plate through the connecting rod 404 to achieve a linkage effect.

[0044] The end seal 40 also includes a folding component 411 arranged on the side of the lower diaphragm 503. The folding component 411 can press against the groove wall outside the lower diaphragm 503 along the vertical direction of conveying, and fold and deform the redundant part of the lower diaphragm 503. At least four folding components 411 are arranged, which are specifically distributed on both sides of the redundant part of the lower diaphragm 503, so that the lower diaphragm 503 is pushed in by the folding component 411, and the redundant part of the lower diaphragm 503 is bent and folded inward to form a folded shape similar to the opening of the packaging bag. At the same time, the lower diaphragm 503 is concave, and its shape is easier to fold. After the folding component 411 is pushed in, the redundant part of the lower diaphragm 503 is folded flat. After the end seal plate heat-seals the upper diaphragm 501 and the lower diaphragm 503, the shapes of the two ends of the insulation board 50 are flatter to avoid wrinkles on the upper diaphragm 501 or the lower diaphragm 503, and also to avoid defects in heat sealing caused by unevenness.

[0045] Specifically, the folding component 411 preferably adopts an L-shaped top plate, one end of which is convenient for fixing and the other end is convenient for pushing into the lower diaphragm 503; in addition, rectangular blocks, elliptical blocks, triangular blocks, eagle-beak blocks, etc. can also be used, and the direction facing the lower diaphragm 503 is preferably a thin sheet, and can be pushed into the outer wall of the groove of the lower diaphragm 503; as long as one end can be fixed and the other end can be pushed against the outer wall of the groove of the lower diaphragm 503, the lower diaphragm 503 can be folded.

[0046] The folding parts 411 are a pair of parts that are arranged opposite to each other and face the intersection area between the step and the groove wall of the lower diaphragm 503. In order to further improve the ability of the folding parts 411 to push into and fold the groove wall of the lower diaphragm 503, the pushing position is set at the bending part of the lower diaphragm 503. The cross-section of the lower diaphragm 503 is concave, so that after the bending part of the lower diaphragm 503 is pushed in, it is easier to fold and bend, thereby improving the folding effect.

[0047] like Figure 1 and Figure 6 As shown, the heat sealing device further includes a guide member 30 arranged behind the side sealing member 20 and / or the end sealing member 40, the guide member 30 includes a belt 305, a side plate 304 arranged on the side of the belt 305, and a guide wheel 303 rollingly arranged on the top surface of the side plate 304, wherein the guide member 30 further includes a bottom plate 301 installed on the bearing outer frame, the top of the bottom plate 301 is installed with a belt 305, the belt 305 is used to drive the lower diaphragm 503 to transport, and the side of the belt 305 is also installed with a side plate 304, the side plate 304 is used to A plurality of brackets 302 are installed on the top of the bottom plate 301 for placing the stepped portion after the upper diaphragm 501 and the lower diaphragm 503 are heat-sealed. The brackets 302 are evenly distributed on the sides of the upper diaphragm 501 and the lower diaphragm 503, and each bracket 302 is rotatably installed with a guide wheel 303. The guide wheel 303 and the side plate 304 press the stepped portion of the upper diaphragm 501 and the lower diaphragm 503 that are heat-sealed, which can make the two pressed more tightly and further reduce the problem of air leakage after the upper diaphragm 501 and the lower diaphragm 503 are heat-sealed.

[0048] Specifically, the bracket 302 can adjust the fit between the guide wheel 303 and the side plate 304 through bolts to adapt to diaphragms of different thicknesses. The entire guide member 30 is also in the vacuum chamber. The guide member 30 is preferably arranged behind the side seal member 20 and the end seal member 40, which can improve the tightness of the heat seal while conveying; in order to ensure its heat sealing effect, an external cooling plate can also be added to fit the heat sealing part of the upper diaphragm 501 and the lower diaphragm 503 to achieve rapid cooling.

[0049] like Figure 1 and Figure 2As shown, in order to improve the feeding of the upper diaphragm 501, a film material 10 is arranged at the head end of the supporting frame. The film material 10 is guided by a plurality of rollers and finally provides the upper diaphragm 501 for the side sealing member 20. The heat sealing frame 201 is provided with a clamping wheel 205 at the feeding position of the upper diaphragm 501. The clamping wheel 205 is used to clamp and guide the upper diaphragm 501 to ensure the feeding stability of the upper diaphragm 501.

[0050] like Figure 1-Figure 6 As shown, an edge sealing method of a vacuum insulation panel edge sealing device, the specific operation steps of the edge sealing method are as follows:

[0051] S1: The chamber where the heat sealing device is located is evacuated, and the upper diaphragm 501, the core plate 502 and the lower diaphragm 503 are stacked in sequence and gradually transported to the side sealing plate by the film guide frame 204;

[0052] S2: The side sealing plate moves vertically to hot-press the overlapping part of the upper diaphragm 501 and the lower diaphragm 503, and the upper diaphragm 501 and the lower diaphragm 503 are sealed along the sides of the conveying direction, and the core plate 502 is wrapped between the two;

[0053] S3: The upper diaphragm 501, the core plate 502 and the lower diaphragm 503 are transported to the end seals 40, and the core plate 502 is located between a pair of end seals 40;

[0054] S4: The end sealing plate moves vertically and heat-seals the redundant parts of the upper diaphragm 501 and the lower diaphragm 503 on both sides of the core plate 502 along the conveying direction. The core plate 502 is wrapped in the cavity between the upper diaphragm 501 and the lower diaphragm 503 to form the insulation board 50.

[0055] When using it, the specific steps are as follows:

[0056] First, the film material 10 is conveyed to the upper diaphragm 501 by the roller, and the free end of the upper diaphragm 501 is conveyed to the heat sealing frame 201 along with the pressing wheel 205, and at the same time, the lower diaphragm 503 is conveyed to the heat sealing frame 201 through the film guide frame 204 and the driving roller, and the core plate 502 is in the groove of the lower diaphragm 503 and is conveyed to the heat sealing frame 201 along with the lower diaphragm 503; the first telescopic cylinder 206 drives the upper sealing plate 202 to move downward, and the upper sealing plate 202 and the lower sealing plate 203 heat-seal the steps of the upper diaphragm 501 and the lower diaphragm 503;

[0057] Secondly, the belt 305 in the guide member 30 drives the lower diaphragm 503, so that the lower diaphragm 503, the core plate 502 and the upper diaphragm 501 are subsequently transported, and the two are more closely attached under the cooperation of the guide wheel 303, and the heat-sealed lower diaphragm 503, the core plate 502 and the upper diaphragm 501 are transported to the end seal member 40;

[0058] Furthermore, the second telescopic cylinder 402 and the fourth telescopic cylinder 409 in the end seal 40 are contracted, and the upper end seal plate 403 moves upward, which drives the sliders 406 on both sides in the width direction to move toward each other through the connecting rod 404, and the slider 406 drives the third telescopic cylinder 405 and the folding component 411 at its top to move toward each other, and the third telescopic cylinder 405 can make a corresponding adjustment to the extension distance of the folding component 411. After the folding component 411 moves, it pushes into the outer wall of the groove of the lower diaphragm 503, so that the lower diaphragm 503 is squeezed and deformed from the outer wall of the groove, and gradually folded into shape. The corners of the redundant parts of the lower diaphragm 503 on both sides of the core plate 502 are folded, and the second telescopic cylinder 402 and the fourth telescopic cylinder 409 are used to press the lower diaphragm 503 to the outer wall of the groove. After extending, the upper sealing plate 403 and the lower sealing plate 410 move toward each other, and the folding part 411 gradually moves away from the lower diaphragm 503, and the lower diaphragm 503 is still in a folded state until the upper sealing plate 403 and the lower sealing plate 410 heat-seal the redundant and folded parts of the upper diaphragm 501 and the lower diaphragm 503, so that the upper diaphragm 501 and the lower diaphragm 503 at the front and rear ends of the core plate 502 are closed to form an insulating board 50, and the second telescopic cylinder 402 and the fourth telescopic cylinder 409 retract again, and the upper sealing plate 403 and the lower sealing plate 410 move away from the upper diaphragm 501 and the lower diaphragm 503, and stop at the place where the folding part 411 does not contact the lower diaphragm 503, and the subsequent heat sealing operation can be carried out.

[0059] Finally, the belt 305 in the guide member 30 gradually guides the insulation board 50 formed by heat sealing of the end seal member 40 to be output, and the guide wheel 303 squeezes the side step of the insulation board 50. After the insulation board 50 is output, subsequent operation steps can be performed.

[0060] The above-described embodiments are merely descriptions of preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A vacuum insulation panel edge sealing device, comprising an insulation board (50) composed of an upper diaphragm (501), a core board (502) and a lower diaphragm (503) stacked in sequence, and a heat sealing device placed in a vacuum chamber, wherein the heat sealing device heat-seals the edges of the upper diaphragm (501) and the lower diaphragm (503), characterized in that: The heat sealing device comprises: A side sealing member (20) comprising a film guide frame (204) for conveying the upper diaphragm (501), the core plate (502) and the lower diaphragm (503), and a side sealing plate arranged on the side of the film guide frame (204), wherein the side sealing plate is capable of moving vertically and heat-sealing the side of the upper diaphragm (501) and the lower diaphragm (503); and a pair of end seals (40), the end seals (40) comprising one or a pair of end seal plates covering the upper diaphragm (501) and the lower diaphragm (503), the one or a pair of end seal plates being able to move vertically and heat-seal redundant portions of the upper diaphragm (501) and the lower diaphragm (503) on both sides of the core plate (502) along the conveying direction; The lower diaphragm (503) is in the shape of an elongated strip, with a groove for accommodating the core plate (502) in the middle thereof and steps for heat sealing of the side sealing plates in the side thereof.

2. The edge sealing device of the vacuum insulation panel according to claim 1, characterized in that: The film guide frame (204) and the lower diaphragm (503) are arranged in the same cross-sectional shape.

3. The edge sealing device of the vacuum insulation panel according to claim 1, characterized in that: The side sealing member (20) further comprises a heat sealing frame (201) arranged outside the film guiding frame (204), and the side sealing plate is arranged on the heat sealing frame (201).

4. The edge sealing device of the vacuum insulation panel according to claim 1, characterized in that: The end seal (40) further comprises a folding component (411) arranged on the side of the lower diaphragm (503), wherein the folding component (411) is capable of pressing against the groove wall outside the lower diaphragm (503) along the vertical direction of conveying and folding and deforming the redundant part of the lower diaphragm (503).

5. The edge sealing device of the vacuum insulation panel according to claim 4, characterized in that: The folding component (411) is connected to a slider (406) that moves along the width direction of the lower diaphragm (503), and a connecting rod (404) is rotatably mounted between the slider (406) and the end sealing plate.

6. The edge sealing device of the vacuum insulation panel according to claim 5, characterized in that: The end sealing member (40) further comprises a mounting frame (401), and a pair of side fixing plates (407) arranged on the side of the mounting frame (401), the end sealing plates being connected to the mounting frame (401), and the sliding blocks (406) being slidably connected to the side fixing plates (407).

7. The edge sealing device of the vacuum insulation panel according to claim 4, characterized in that: The folding parts (411) are a pair disposed opposite to each other and facing the junction area between the step and the groove wall of the lower diaphragm (503).

8. The edge sealing device of the vacuum insulation panel according to claim 1, characterized in that: The heat sealing device further comprises a guide member (30) arranged behind the side sealing member (20) and / or the end sealing member (40), the guide member (30) comprising a belt (305), a side plate (304) arranged on the side of the belt (305), and a guide wheel (303) rollingly arranged on the top end surface of the side plate (304).

9. The edge sealing method of the vacuum insulation panel edge sealing device according to any one of claims 1 to 8, characterized in that: The specific steps of edge banding are as follows: S1: The chamber where the heat sealing device is located is evacuated, and the upper diaphragm (501), the core plate (502) and the lower diaphragm (503) are stacked in sequence and gradually transported to the side sealing plate by the film guide frame (204); S2: the side sealing plate moves vertically to hot-press the overlapping part of the upper diaphragm (501) and the lower diaphragm (503), and the upper diaphragm (501) and the lower diaphragm (503) are sealed along the sides of the conveying direction, and the core plate (502) is wrapped between the two; S3: The upper diaphragm (501), the core plate (502) and the lower diaphragm (503) are transported to the end seals (40), and the core plate (502) is located between a pair of end seals (40); S4: The end sealing plates move vertically and heat-seal the redundant parts of the upper diaphragm (501) and the lower diaphragm (503) on both sides of the core plate (502) along the conveying direction, and the core plate (502) is wrapped in the cavity between the upper diaphragm (501) and the lower diaphragm (503) to form an insulating plate (50).

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