A tensioning device for inner-hung film doors and windows

Abstract

The present application discloses a tensioning device for inner suspended film doors and windows, which is used to tension and roll up the inner suspended film of the inner suspended film doors and windows and install it between two layers of glass, wherein the tensioning device includes four reels pressed on the four sides of the inner suspended film, and four belt clamping mechanisms pressed on the top of the four reels, and the belt clamping mechanisms rotate the reels by rubbing the friction of the belts, and tension and roll up the four sides of the inner suspended film on the four reels respectively, and keep the reels in a tensioned state on the inner suspended film. The present application can achieve more precise alignment and coordinated and unified winding operations through the mechanical structure of the tensioning device, avoid the problems of angle deviation and uneven winding tightness, and improve the overall tensioning quality and production efficiency.

Description

Technical Field

[0001] The present application belongs to the technical field of energy-saving buildings, and specifically relates to an auxiliary manufacturing device for hollow glass doors and windows in the field of energy-saving buildings, and in particular to a tensioning device for inner-hung film doors and windows. Background Art

[0002] In the field of energy-saving buildings, hollow glass doors and windows are usually used to isolate the temperature difference between indoors and outdoors and to achieve light transmission. Inner-hanging film doors and windows are lightweight energy-saving doors and windows developed on the basis of hollow glass doors and windows. The basic principle is to add one or more layers of transparent plastic film in the inner cavity of the hollow glass, and use the plastic film to isolate the inner cavity of the hollow glass into multiple independent spaces, so that the temperature difference between the inside and outside of the glass doors and windows cannot achieve convection, thereby reducing the weight of the structure while achieving excellent energy-saving effects.

[0003] US 7571583 B2 discloses an inner suspended film door and window, in which two insulating films are arranged between two layers of glass elements. The insulating film is tensioned and fixed inside the cavity of the glass element by a spring element. The spring elements are distributed around the entire film, one end of which is fixed to the frame, and the other end is fixed to the film. The spring elements can elastically tension the film by lateral bending, and the tension can change as the film expands and contracts. Similarly, the sealing system of the energy-saving window disclosed in CN1720383 A has a tensioning structure similar to the above-mentioned prior art, and also utilizes multiple spring elements to tension the inner suspended film. The tensioning structure of the inner suspended film of the above-mentioned prior art needs to be installed on-site, which is cumbersome to operate and highly dependent on the experience of the installer. The tensioning quality of the film is difficult to unify, and wrinkles are easily generated due to poor tensioning.

[0004] CN 106968564 A discloses a double-suspended film phase-change heat-insulating hollow glass, including an outer frame and an inner frame, wherein the film is tensioned and arranged on the inner frame, and the inner frame and the tensioned film are installed in the outer frame as independent components, so that the tensioning problem of the film does not need to be considered when installing the glass window, thereby reducing the complexity of installation. However, in the tensioning structure of the inner frame of the prior art, the edge of the film is fixed to the elastic structural member of the inner frame through a plurality of tensioning holes, and the peripheral holes cannot be completely aligned, and the tensioning strength of each hole may be inconsistent, and sometimes needs to be adjusted separately. The tensioning installation and debugging process of the film is very complicated, and the inner frame also has the problem of too many structural parts. In addition, since the tensioning adjustment is very troublesome, the problem of local wrinkles has not been well solved.

[0005] In summary, the tensioning operation of the film inside the insulating glass of various internally suspended film doors and windows in the prior art is very troublesome, most of which require on-site installation, which is very dependent on the experience of the installer, and the operation is very arbitrary, and the quality is difficult to unify and lacks guarantee. Therefore, there is an urgent need for an auxiliary tensioning device for mass industrial production to improve production efficiency and tensioning quality. Summary of the invention

[0006] The technical problem to be solved by the present application is to provide a tensioning device for internally suspended membrane doors and windows to reduce or avoid the above-mentioned problems.

[0007] In order to solve the above-mentioned technical problems, the present application proposes a tensioning device for inner suspended film doors and windows, which is used for tensioning and rolling up the inner suspended film of the inner suspended film doors and windows and tensioning it between two layers of glass, wherein the tensioning device includes four rollers pressed on the four sides of the inner suspended film, and four belt pressing mechanisms pressed above the four rollers, and the belt pressing mechanism drives the rollers to rotate through the friction force of the belt, so that the four sides of the inner suspended film are tensioned and rolled on the four rollers respectively, and the rollers keep the inner suspended film in a tensioned state.

[0008] Preferably, the edges of the four sides of the inner suspension film are fixedly connected to four reels respectively.

[0009] Preferably, the edges of the four sides of the inner suspension film are bonded to the four reels by double-sided tape.

[0010] Preferably, the belt clamping mechanism comprises a clamping frame, in which two pulleys are arranged, and belts are arranged around the two pulleys. The pulleys are driven by a motor to drive the belts to reciprocate around the pulleys.

[0011] Preferably, the inner hanging film is a rectangle with four corners cut off.

[0012] Preferably, after the four sides of the inner suspension film are wound on four reels, the ends of the reels are respectively fixed by snapping with corner connectors.

[0013] Preferably, the cross-section of the middle portion of the reel for winding the inner suspension film is circular, and the cross-section of the two ends for connecting the corner connectors is square.

[0014] Preferably, the belt tensioning mechanism is fixedly mounted on an operating frame, and the operating frame is provided with positioning hooks corresponding to the end positions of the four reels, the ends of the reels abut against the top of the positioning hooks, and the middle of the reels are tightly pressed against the lower surface of the belt of the belt tensioning mechanism.

[0015] The present application can achieve more precise alignment and coordinated and unified winding operations through the mechanical structure of the tensioning device, avoid problems such as angle deviation and uneven winding tightness, and improve the overall tensioning quality and production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The following drawings are only intended to illustrate and explain the present application, and do not limit the scope of the present application.

[0017] in,Figure 1 Shown is a partially cutaway schematic diagram of an inner suspended membrane door and window according to a specific embodiment of the present application.

[0018] Figure 2 Shown is an exploded perspective view of a tension frame according to a specific embodiment of the present application.

[0019] Figure 3 Shown is a schematic diagram of the winding principle of the internal suspension film.

[0020] Figure 4 Shown is a schematic structural diagram of a tensioning device for an inner-hung film door and window according to a specific embodiment of the present application.

[0021] Figure 5 Shown is a schematic diagram of the main structure decomposition of a tensioning device for an inner suspended membrane door and window according to another specific embodiment of the present application.

[0022] Figure 6 Shown is a schematic structural diagram of a belt tightening mechanism according to a specific embodiment of the present application.

[0023] Figure 7 Shown is a schematic diagram of the structure of an operation framework according to a specific embodiment of the present application.

[0024] Figure 8 Shown is a schematic exploded view of the connection relationship between the corner connector and the reel according to a specific embodiment of the present application.

[0025] Fig. 9 Shown is a schematic structural diagram of a corner connector according to another specific embodiment of the present application.

[0026] Fig.10 Shown is a partially cutaway structural schematic diagram of a corner connector according to another specific embodiment of the present application. DETAILED DESCRIPTION

[0027] In order to have a clearer understanding of the technical features, purposes and effects of the present application, the specific implementation of the present application is now described with reference to the accompanying drawings, wherein the same components are numbered the same.

[0028] like Figure 1-2 The inner suspended film door and window shown includes two layers of glass 1, and a layer of inner suspended film 2 is arranged inside the cavity between the two layers of glass 1. Of course, those skilled in the art should understand that, according to needs, two or more layers of inner suspended film 2 can also be arranged between the two layers of glass 1.

[0029] The inner suspension film 2 is made of a plastic film with good heat-resistance and insulation effects, and needs to be stretched between the insulating glass to keep the light transmitted in parallel and avoid visual distortion.

[0030] In order to facilitate installation, the inner suspended film 2 of the present application is arranged in a tensioned state inside a tensioning frame 3. The tensioning frame 3 can be installed between two layers of glass 1 as an independent component with the inner suspended film 2 in the tensioned state. Therefore, when installing the glass door and window, there is no need to consider the problem of on-site tensioning of the inner suspended film 2, which reduces the complexity of installation. Further, in the illustrated specific embodiment, the two sides of the tensioning frame 3 can be bonded between the two layers of glass 1 through a spacer 4. For example, the spacer 4 can adopt an existing composite butyl aluminum spacer, and the two sides of the spacer 4 have butyl glue for bonding, and the hollow structure inside the spacer 4 is provided with a molecular sieve for adsorbing water vapor.

[0031] The tensioning operation of the inner suspension film in the prior art is very complicated. During installation, the four sides of the inner suspension film need to be clamped on many elastic elements respectively, and in order to prevent wrinkles, the tensioning force needs to be adjusted repeatedly locally. Figure 2 It can be seen from the exploded perspective view of the tensioning frame 3 shown that the four sides of the inner suspension film 2 of the present application are respectively wound on four reels 21, and the two ends of the four reels 21 are respectively fixed by snapping through corner connectors 60 (which will be described in detail later), and then the inner suspension film 2 tensioned by the reels 21 and fixed by the corner connectors 60 can be set inside the tensioning frame 3 between the two layers of glass 1.

[0032] In a specific embodiment shown in the figure, in order to facilitate the tensioning of the inner suspension film 2 while exposing the two ends of the reel 21, the inner suspension film 2 is a rectangle with four corners cut off, so that the width of the four sides of the inner suspension film 2 is narrower as it is closer to the edge position, so when it is wound on the reel 21, the closer to the middle of the reel 21, the thicker the winding thickness of the inner suspension film 2 on the reel 21, and the thinner the winding thickness of the inner suspension film near the two ends of the reel 21. In other words, the inner suspension film 2 wound on the reel 21 will generally form a spindle shape with a thick middle and thin ends. Therefore, as the inner suspension film 2 is tightly wound on the reel 21, the tensioning force at the middle position of the inner suspension film 2 will gradually become greater than the tensioning force at the corner position, which can offset the film extension and relaxation caused by the thermal expansion of the inner suspension film suspended in the middle. At the same time, the winding edge of the inner suspension film 2 will tend to extend to the two ends with thinner thickness, thereby naturally eliminating the phenomenon of wrinkles caused by local extrusion of the film.

[0033] In order to facilitate the winding of the inner suspension film 2 by the reel 21 to generate a balanced tension force, it is preferred that the cross section of the middle portion of the reel 21 used to wind the inner suspension film 2 is circular. In addition, in order to facilitate the connection to the corner connector 60 after tensioning without relaxation of the tension force, the cross sections of the two ends of the reel 21 used to connect the corner connector 60 are square, so that the reel 21 is not easy to rotate.

[0034] By winding the four sides of the inner suspension film on four reels respectively, the present application can obtain a greater tensioning force in the middle of the inner suspension film, offsetting the thermal relaxation of the inner suspension film, and naturally eliminating wrinkles through winding. Therefore, when installed on the tensioning frame, only the two ends of the tensioning reel need to be tightened, and there is no need to adjust the tensioning force of each point around the inner suspension film one by one, which greatly reduces the complexity of the tensioning operation.

[0035] Furthermore, if Figure 2 As shown, the tension frame 3 includes a first frame body 31 and a second frame body 32 clamped on both sides of the inner suspension film 2. In the specific embodiment shown in the figure, four corner connectors 60 are correspondingly provided at the corners of the four reels 21. The corner connectors 60 can be fixedly installed inside the tension frame 3 by screw connection, welding or bonding, so that the inner suspension film 2 in a tensioned state can be fixedly installed inside the tension frame 3.

[0036] It can be seen from the above description that in order to reduce the complexity of the installation operation of the inner suspension film 2, it is first necessary to wind the inner suspension film 2 on the reel 21 and keep the inner suspension film 2 in a tensioned state. Figure 3 As shown, usually, the inner suspension film 2 made of plastic film needs to be cut into a shape that is convenient for winding, that is, the four corners of the rectangular film are cut off, and the inner suspension films 2 cut into the shape are stacked layer by layer. Then, four reels 21 are placed above the edges of the four sides of the inner suspension film 2 for winding operation, and the edges of the four sides of the inner suspension film 2 are respectively fixedly connected to the four reels 21, for example, the four edges of the inner suspension film 2 are bonded to the four reels 21 by glue or double-sided tape, and finally the reels 21 are rotated to wind the inner suspension film 2 on the reels 21.

[0037] from Figure 3 It can be seen from the schematic diagram that although winding the inner suspension film 2 on the reel 21 does not seem complicated, in order to keep the inner suspension film 2 in a tensioned state during the winding process, four reels 21 need to be operated simultaneously and cannot be loosened. Any angular deviation will cause the four reels 21 to fail to maintain the correct position after winding, thereby causing the tension of the inner suspension film 2 to fail and cannot be used for installation between insulating glass.

[0038] In order to solve the problem that the tensioning operation of the inner suspended film 2 is complicated and prone to failure, the present application proposes a tensioning device for inner suspended film doors and windows, which is used to tension and roll up the inner suspended film 2 of the inner suspended film doors and windows and install it between two layers of glass 1, as shown in the figure. Through the mechanical structure of the tensioning device, the present application can achieve more precise alignment and coordinated and unified winding operation compared to manual operation, avoid angle deviation and uneven winding tightness, and improve the overall tensioning quality and production efficiency.

[0039] As shown in the figure, the tensioning device of the present application includes four reels 21 pressed on the four sides of the inner suspension film 2, and four belt clamping mechanisms 7 pressed above the four reels 21. The belt clamping mechanism 7 rotates the reels 21 through the friction force of the belt, and the four sides of the inner suspension film 2 are respectively wound on the four reels 21, and the reels are kept in a tensioned state on the inner suspension film.

[0040] To facilitate winding, as mentioned above, the edges of the four sides of the inner suspension film 2 can be fixedly connected to the four reels 21 respectively, for example, glue can be applied to the edges of the four sides of the inner suspension film 2, or a double-sided tape can be pre-bonded to the reel 21, and the protective film on the double-sided tape can be torn off when pressing the reel 21, and then the reel 21 can be pressed down to allow the four edges of the inner suspension film 2 to be bonded to the four reels 21.

[0041] like Figure 6 As shown, the belt pressing mechanism 7 includes a pressing frame 71 , in which two pulleys 72 are arranged, and a belt 73 is arranged around the two pulleys 72 . The pulleys 72 are driven by a motor 74 to drive the belt 73 to reciprocate around the pulleys 72 .

[0042] The belt 73 can be made of materials such as rubber, has considerable friction and certain elasticity, and can be used to press the lower surface of the belt 73 against the middle of the reel 21. When the belt 73 moves around the pulley 72, the reel 21 can be driven to rotate and the inner suspension film 2 can be wound around the reel 21 layer by layer.

[0043] In the present application, the operation of winding the inner suspension film 2 on the reel 21 is handled mechanically by four belt clamping mechanisms 7. As long as the positions of the stacked inner suspension film 2 and the belt clamping mechanisms 7 are kept accurate, the angle of the winding operation can be guaranteed not to deviate. In addition, since the belt 73 of the belt clamping mechanism 7 is elastic, the force of its downward pressing and rubbing can be kept uniform, and relative sliding will not occur. As long as the speed and time of the motor 74 are controlled, the number of winding layers can be controlled, and the winding accuracy can be well guaranteed without worrying about the influence of human factors.

[0044] Figure 4 The figure shows that the four sides of the inner suspension film 2 are wound on the four reels 21 by the belt pressing mechanism 7, and then the ends of the reels 21 can be fixed by snapping through the corner connectors 60. The four reels 21 fixed at the four corners cannot be relatively displaced, thus forming a fixed tensioning state, thus completing the tensioning operation of a sheet of inner suspension film 2. After that, the belt pressing mechanism 7 can be raised, the tensioned inner suspension film 2 can be removed, and four reels 21 can be set above the stacked inner suspension film 2 again, and the belt pressing mechanism 7 can be pressed above the four reels 21, and the next tensioning operation process can be repeated.

[0045] like Figure 4-5 As shown, further, in a specific embodiment, the belt pressing mechanism 7 can be fixedly mounted on an operating frame 8, and the operating frame 8 can be connected to a robot arm (not shown in the figure) or other driving mechanisms through structures such as a crossbeam 9, etc., for accurately controlling the pressing down, raising and positioning of the four belt pressing mechanisms 7. In the figure, corresponding to each belt pressing mechanism 7, a connecting column 81 is provided below the operating frame 8, and the belt pressing mechanism 7 is fixedly connected to the end of the connecting column 81.

[0046] Furthermore, if Figure 7 As shown, the operating frame 8 is provided with positioning hooks 82 corresponding to the end positions of the four reels 21, and the ends of the reels 21 are against the top of the positioning hooks 82. As shown in the figure, each reel 21 is provided with two positioning hooks 82, and there are eight in total. Since the cross-section of the end of the reel 21 is square, the positioning hooks 82 are bent into right angles, so that the end of the reel 21 has two faces that can just fit with the right-angled sides of the positioning hooks 82. The outer width of the two positioning hooks 82 corresponding to each reel 21 can be exactly equal to the length of the reel 21, so when the reel 21 is placed above the two positioning hooks 82, the position of the reel 21 can be well determined. Of course, corresponding to the end shape of the reel 21, other types of positioning hooks 82 can also be provided.

[0047] When placing the reel 21 above the stacked inner suspension film 2, first align the two ends of the reel 21 and place them above the positioning hook 82, the middle part of the reel 21 slightly presses the belt 73 of the belt pressing mechanism 7 upward, so that the belt 73 is slightly bent and deformed upward, and the middle part of the reel 21 is pressed tightly on the lower surface of the belt 73 of the belt pressing mechanism 7, and the reel 21 is firmly stuck. When the belt pressing mechanism 7 presses down on the edge of the stacked inner suspension film 2, the inner suspension film 2 will press against the reel 21 to make the belt 73 further bend upward, and the operating frame 8 fixedly connected to the belt pressing mechanism 7 will move downward relative to the belt 73 as the belt 73 bends, so that the positioning hook 82 is separated from the end of the reel 21, and when the belt pressing mechanism 7 rubs the reel 21 to rotate, the positioning hook 82 will not hinder the rotation of the reel 21.

[0048] Further, as shown in the figure, in a specific embodiment, the corner connector 60 includes two slots 61 arranged at right angles, and the cross section of the slots 61 corresponds to the cross section of the end of the reel 21 (the size of the slots 61 is slightly larger than the end of the reel 21), so that the ends of two adjacent reels 21 arranged at right angles can be respectively clamped in one of the slots 61. In order to prevent the end of the reel 21 from escaping from the slots 61, a locking inclined surface 62 is provided at the inner top of the slots 61. During installation, the end of the reel 21 is pressed downward into the slot 61 along the locking inclined surface 62 (the inner suspension film 2 is elastic and will be slightly stretched and then restored), and then the end of the reel 21 will be clamped below the locking inclined surface 62, and under the tension of the inner suspension film 2, the inner side wall of the slot 61 will press against the end of the reel 21. If the corner connector 60 is to be removed, it is only necessary to pull the end of the reel 21 outward a little distance along the slot 61 so that the end is free from the constraint of the locking inclined surface 62, and the corner connector 60 can be removed smoothly.

[0049] As mentioned above, the inner suspended film 2 stretched by the reel 21 and fixed by the corner connector 60 can be directly set between the two layers of glass 1, for example, double-sided tape is set on both sides of the corner connector 60 and bonded between the spacer strips between the two layers of glass 1, so that the tension frame 3 is not needed. Alternatively, the inner suspended film 2 stretched by the reel 21 and fixed by the corner connector 60 can be directly set inside the tension frame 3 between the two layers of glass 1 (for example, bonded inside the tension frame 3 by double-sided tape), and the spacer strips 4 are set on both sides of the tension frame 3, as mentioned above. The inner suspended film 2 in the above two settings is a one-time tensioning structure, which is suitable for inner suspended film doors and windows with less influence of temperature difference deformation.

[0050] However, for the inner suspension film that is greatly affected by temperature difference deformation, it will repeatedly expand and contract during long-term use, which will cause the inner suspension film to be unable to recover after stretching, thereby causing the stretched inner suspension film to bend and wrinkle, affecting the transparency of the glass doors and windows, and observing the outdoor scenery will produce visual deformation due to refraction. In order to avoid this problem, an elastic tensioning device such as a spring (not shown in the figure) can be further installed inside the tensioning frame 3 to pull the end of the reel 21 to adapt to the elongation of the inner suspension film and maintain the tension. In this case, the corner connector 60 will become a temporary component, and it is necessary to remove the corner connectors 60 one by one and hang them on the corresponding elastic tensioning device when the inner suspension film 2 is installed inside the tensioning frame 3.

[0051] Those skilled in the art should understand that although the present application is described in the form of multiple embodiments, not every embodiment contains only one independent technical solution. Such description in the specification is only for the sake of clarity, and those skilled in the art should understand the specification as a whole and regard the technical solutions involved in each embodiment as being able to be combined into different embodiments to understand the scope of protection of the present application.

[0052] The above description is only an illustrative embodiment of the present application and is not intended to limit the scope of the present application. Any equivalent changes, modifications and combinations made by any technician in the field without departing from the concept and principle of the present application shall fall within the scope of protection of the present application.

Claims

1. A tensioning device for inner suspended film doors and windows, used to tension and roll up the inner suspended film of the inner suspended film doors and windows and install it between two layers of glass, characterized in that: The tensioning device includes four reels pressed on the four sides of the inner suspension film and four belt clamping mechanisms pressed above the four reels, the inner suspension film is a rectangle with four corners cut off; the belt clamping mechanism rubs the reel to rotate through the friction force of the belt, and the four sides of the inner suspension film are respectively tensioned and wound on the four reels, and the reel is kept in a tensioned state on the inner suspension film; the belt clamping mechanism includes a clamping frame, in which two pulleys are arranged, and belts are arranged around the two pulleys, and the pulleys are driven by a motor to drive the belts to reciprocate around the pulleys; the belt clamping mechanism is fixedly installed on an operating frame, and the operating The working frame is provided with positioning hooks corresponding to the end positions of the four reels, the end of the reel is against the top of the positioning hook, and the middle of the reel is pressed tightly against the lower surface of the belt of the belt pressing mechanism; the cross-section of the middle part of the reel used for winding the inner suspended film is circular, and the cross-sections at both ends are square; after the four sides of the inner suspended film are wound on the four reels, the ends of the reel are respectively fixed by buckles of corner connectors; the corner connector includes two card slots arranged at right angles, and a locking inclined surface is provided on the inner top of the card slot, the end of the reel is pressed into the card slot along the locking inclined surface and is clamped below the locking inclined surface, and the inner side wall of the card slot presses against the end of the reel.

2. The tensioning device for inner-hung film doors and windows according to claim 1, characterized in that: The edges of the four sides of the inner suspension film are fixedly connected to the four reels respectively.

3. The tensioning device for inner-hung film doors and windows according to claim 2, characterized in that: The edges of the four sides of the inner suspension film are bonded to the four reels through double-sided adhesive tapes.

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