PVB (polyvinyl butyral) film forming equipment

Abstract

The utility model discloses PVB (polyvinyl butyral) film forming equipment which comprises a casting unit, a heat treatment thickness measuring unit, a carrier roller unit and a cooling unit, wherein the casting unit and the heat treatment thickness measuring unit are adjacent to each other; the casting unit comprises a machine plate and a mold which is arranged on the machine plate and is used for uniformly flowing out a PVB (Polyvinyl Butyral) film; the first cooling embossing roller and the cooling traction roller are rotationally connected to the machine plate; the second cooling knurling roller and the pressing roller are arranged on the two sides of the PVB film in a butt clamping mode with the first cooling knurling roller and the cooling traction roller respectively. According to the utility model, the distance between the heat treatment thickness measuring unit and the mold is shortened, so that the heat treatment thickness measuring unit can feed back the thickness of the PVB film in time, the waste is reduced, the first cooling knurling roller and the cooling traction roller are respectively assembled with the second cooling knurling roller and the pressing roller in a butt clamp manner, the uniformity of the thickness of the PVB film can be ensured, and the production efficiency is improved. The water-free process saves a large amount of cooling water, ensures the efficiency and reduces the energy consumption.

Description

TECHNICAL FIELD

[0001] The utility model relates to PVB processing technical field, concretely is a kind of PVB film forming equipment. BACKGROUND

[0002] Traditional PVB production process route: extrusion→water tank→water removal drying unit→support roller unit→oven heat treatment unit→cooling unit→thickness measurement system, and the mode has the following shortcomings:

[0003] First, the existing PVB production process generally uses water tank to cool and shape the extrusion 10, which needs to consume a large amount of water for cooling and heat exchange, and the water system mechanism is complex and large, with high energy consumption.

[0004] Secondly, the film carries water after passing through the water tank and needs to be dried by a specific water removal drying unit, increasing energy consumption.

[0005] Thirdly, the subsequent oven unit usually uses a dehumidifier to heat and dehumidify, which needs to use a large amount of high-temperature and high-pressure steam and low-temperature cooling water, with serious energy consumption.

[0006] Finally, the mold is too far from the die head, and after adjusting the thickness of the die head, it needs to pass through a long distance to reach the thickness measurement unit, causing a lot of waste.

[0007] Therefore, in order to improve the above problems, a PVB film forming equipment is proposed. Utility model content

[0008] The utility model aims at providing a kind of PVB film forming equipment, the position setting of adjacent of flow casting unit and heat treatment thickness measurement unit, shorten the distance of heat treatment thickness measurement unit and mold, so that heat treatment thickness measurement unit can timely feedback the thickness of PVB film, reduce waste, secondly, the design of first cooling embossing roller and cooling traction roller, combined with the second cooling embossing roller, press roller that is assembled with the two in the form of clamp, facilitate the printing process of second cooling embossing roller to PVB film, while ensuring the uniformity of PVB film thickness, waterless technology, save a lot of cooling water, ensure efficiency while reducing energy consumption.

[0009] In order to achieve the above object, the utility model provides the following technical scheme: a kind of PVB film forming equipment, comprising: casting unit, heat treatment thickness measuring unit, supporting roller unit and cooling unit, in turn for the casting forming, heat treatment thickness measuring and cooling process of PVB film;Wherein, the casting unit, heat treatment thickness measuring unit are adjacent;The casting unit includes machine plate, die for uniform outflow PVB film is arranged in the machine plate;And first cooling embossing roller, second cooling embossing roller are rotationally connected on the machine plate;It further includes cooling traction roller and compression roller being arranged on the machine plate, and the first cooling embossing roller and second cooling embossing roller, cooling traction roller and compression roller are respectively placed in the form of pair of clamps on the both sides of PVB film, for ensuring the uniformity of PVB film thickness and cooling effect.

[0010] Preferably, the machine plate is sequentially provided with first over roller and second over roller along the advancing method of PVB film, the leading end of the PVB film is placed at the position corresponding to the die opening of the first cooling embossing roller, the tail end of the PVB film passes around the first cooling embossing roller and the second cooling embossing roller, the cooling traction roller and the compression roller, and sequentially passes around the first over roller and the second over roller in a ring state to extend in the direction of the heat treatment thickness measuring unit.

[0011] Preferably, the lower part of the machine plate is further provided with a rubber compression roller, which is in close contact with the two sides of the PVB film.

[0012] Preferably, the diameter of the first cooling embossing roller and the second cooling embossing roller is mm, and the diameter of the cooling traction roller is mm.

[0013] Preferably, the heat treatment thickness measuring unit comprises a heat treatment assembly and a thickness measuring assembly, wherein the thickness measuring assembly is arranged on one side of the machine base close to the casting unit; the heat treatment assembly comprises a heating roller assembly and a first traction roller assembly, the heating roller assembly comprises a first base plate, two heating steel rollers and two first positioning rollers arranged on the first base plate, wherein the two heating steel rollers are distributed vertically, and the two first positioning rollers are distributed horizontally; the tail end of the PVB film sequentially passes through the thickness measuring assembly and the first positioning rollers, and sequentially passes around the right first positioning roller, the lower heating steel roller, the upper heating steel roller and the left first positioning roller in a loop trajectory, and extends in the direction of the supporting roller unit.

[0014] Preferably, the supporting roller unit comprises a machine base, two supporting plates arranged on the top of the machine base in a stepped manner, and a plurality of roller shafts rotatably installed on the upper surface of each supporting plate, and each roller shaft is in communication with a hot air pipe arranged in the supporting plate, for dehumidifying the PVB film.

[0015] Preferably, the cooling unit comprises a second base plate, and a cooling assembly and a second traction roller assembly arranged on the second base plate, wherein the second traction roller assembly is identical in structure to the first traction roller assembly; the second traction roller assembly comprises a mounting frame arranged on the second base plate, a first transmission roller rotatably mounted on the mounting frame, and a second transmission roller rotatably mounted on the second base plate, and the second transmission roller is arranged symmetrically with the first transmission roller in up-down direction; and the second traction roller assembly further comprises a variable frequency motor arranged on the mounting frame, and the variable frequency motor is used to drive the first transmission roller to rotate.

[0016] Preferably, the cooling assembly comprises two rotatable cooling rollers and two rotatable second positioning rollers, wherein the two cooling rollers are distributed in left-right direction with a certain offset, and the two second positioning rollers are distributed in up-down direction with a certain offset; one end of the PVB film is arranged between the first transmission roller and the second transmission roller for traction operation, and the other end of the PVB film sequentially passes through the two cooling rollers and the two second positioning rollers and extends to the next process.

[0017] Compared with the prior art, the cooling unit has the following beneficial effects:

[0018] 1. The cooling unit is arranged adjacent to the hot treatment and thickness measuring unit, so that the distance between the hot treatment and thickness measuring unit and the mold is shortened, the thickness of the PVB film can be timely fed back by the hot treatment and thickness measuring unit, and waste is reduced; in addition, the first cooling embossing roller and the cooling traction roller are designed in combination with the second cooling embossing roller and the compression roller which are assembled in a clamping mode, so that the printing process of the PVB film by the second cooling embossing roller is facilitated, the uniformity of the thickness of the PVB film is ensured, the water-free process is realized, a large amount of cooling water is saved, the efficiency is ensured, and energy consumption is reduced.

[0019] 2. As another embodiment of the cooling unit, the two heating steel rollers and the two first positioning rollers are arranged, so that the PVB film has a circular trajectory, the circular trajectory makes the PVB film as much as possible to be attached to the surfaces of the two heating steel rollers, internal stress generated by rapid cooling of the PVB film is eliminated, the steel roller electric heating is adopted for the heating steel rollers, compared with the traditional oven, only electric heating is used, and a dehumidifier and high-temperature steam of the traditional oven are not needed, so that the production environment is improved and energy consumption is saved. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 Fig. 1 is a structural schematic view of the cooling unit;

[0021] Figure 2 Fig. 2 is an enlarged structural schematic view of the casting unit;

[0022] Figure 3 Fig. 3 is an enlarged structural schematic view of the second traction roller assembly.

[0023] In the figure: 1, casting unit; 101, machine plate; 102, first cooling embossing roller; 103, cooling traction roller; 104, mold; 105, second cooling embossing roller; 106, compression roller; 107, rubber compression roller; 108, first over roller; 109, second over roller; 2, heat treatment thickness measuring unit; 201, heat treatment assembly; 2011, first base plate; 2012, heating steel roller; 2013, first positioning roller; 2014, first traction roller assembly; 202, thickness measuring assembly; 3, idler unit; 301, machine base; 302, support plate; 303, roller shaft; 4, cooling unit; 401, second base plate; 402, cooling roller body; 403, second positioning roller; 404, second traction roller assembly; 4041, mounting bracket; 4042, variable frequency motor; 4043, first transmission roller; 4044, second transmission roller; 10, PVB film. DETAILED DESCRIPTION

[0024] In the description of the present application, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. The embodiments of the present application will be described in detail below with reference to the drawings.

[0025] Embodiment 1

[0026] Please refer to Figures 1 to 3 The present application provides a technical scheme: a PVB film forming equipment, comprising: a casting unit 1, a heat treatment thickness measuring unit 2, an idler unit 3 and a cooling unit 4, which are used for casting forming, heat treatment thickness measuring and cooling process of the PVB film 10 in sequence; wherein the casting unit 1 and the heat treatment thickness measuring unit 2 are adjacent; the casting unit 1 comprises a machine plate 101, a mold 104 arranged on the machine plate 101 for uniformly flowing out the PVB film 10, and a first cooling embossing roller 102 and a second cooling embossing roller 105 rotatably connected to the machine plate 101; further comprising a cooling traction roller 103 and a compression roller 106 arranged on the machine plate 101, and the first cooling embossing roller 102 and the second cooling embossing roller 105, the cooling traction roller 103 and the compression roller 106 are respectively arranged on both sides of the PVB film 10 in the form of clamping, for ensuring the uniformity of the thickness of the PVB film 10 and the cooling effect.

[0027] It is known that the traditional PVB production process route: extrusion → water tank → water removal and drying unit → roller unit → oven heat treatment unit → cooling treatment unit → thickness measurement system. The traditional method has the disadvantages of high energy consumption, low efficiency, and waste caused by not timely adjusting the thickness of the PVB film 10 in actual use.

[0028] The present application takes into account the disadvantages of the traditional PVB film 10 production process, and in combination with Figure 1 、 2 , a casting unit 1, a heat treatment and thickness measurement unit 2, a roller unit 3, and a cooling unit 4 are designed to sequentially complete the casting forming, heat treatment and thickness measurement, and cooling process of the PVB film 10. The casting unit 1 is designed adjacent to the heat treatment and thickness measurement unit 2, so that the heat treatment and thickness measurement unit 2 shortens the distance from the mold 104 of the casting unit 1, thereby timely feeding back the thickness of the PVB film 10.

[0029] The first cooling embossing roller 102 and the second cooling embossing roller 105 of the casting unit 1, wherein the first cooling embossing roller 102 is arranged above and below the mold 104 and is used to receive the PVB film 10 flowing out of the mold 104. The PVB film 10 in this state is in a molten state at about 200°C. Then the PVB film 10 extends between the first cooling embossing roller 102 and the second cooling embossing roller 105 and extends to the cooling traction roller 103 for cooling and shaping. Cooling water is supplied to the first cooling embossing roller 102, the second cooling embossing roller 105, and the cooling traction roller 103, which have self-rotation characteristics to ensure their cooling effect. The first cooling embossing roller 102 and the cooling traction roller 103 are combined with the second cooling embossing roller 105 and the press roller 106 assembled in a clamping form, so that the first cooling embossing roller 102 and the second cooling embossing roller 105, the cooling traction roller 103, and the press roller 106 are respectively clamped on both sides of the PVB film 10. This method facilitates the printing process of the first cooling embossing roller 102 and the second cooling embossing roller 105 on the PVB film 10. On the other hand, the clamping form of the PVB film 10 can ensure the uniformity of the thickness of the PVB film 10. Compared with the traditional process, i.e., water tank + drying unit, this part saves the drying process. At the same time, since there is no water tank, a large amount of cooling water is saved, reducing energy consumption and improving efficiency.

[0030] The present application is arranged adjacent to the heat treatment thickness measuring unit 2 of the casting unit 1, shortens the distance between the heat treatment thickness measuring unit 2 and the mold 104, so that the heat treatment thickness measuring unit 2 can timely feedback the thickness of the PVB film 10, reduces waste, secondly, the design of the first cooling embossing roller 102 and the cooling traction roller 103, combined with the second cooling embossing roller 105 and the compression roller 106 (preferably rubber roller material) assembled in a clamping form, facilitates the printing process of the first cooling embossing roller 102 and the second cooling embossing roller 105 on the PVB film 10, while ensuring the uniformity of the thickness of the PVB film 10, saving a large amount of cooling water, ensuring efficiency while reducing energy consumption.

[0031] Further, the method of advancing the machine plate 101 along the PVB film 10 is sequentially provided with a first roller 108 and a second roller 109, the leading end of the PVB film 10 is placed at the position corresponding to the opening of the mold 104 of the first cooling embossing roller 102, the tail end of the PVB film 10 passes between the first cooling embossing roller 102 and the second cooling embossing roller 105, the cooling traction roller 103 and the compression roller 106 and extends in a ring shape to the heat treatment thickness measuring unit 2 direction in turn, combined with Figure 1 、 2 , the design improves the stability of the PVB film 10 conveying.

[0032] Further, the machine plate 101 is further provided with a rubber compression roller 107, which is closely attached to the two sides of the PVB film 10 with the first cooling embossing roller 102, for better adhesion of the PVB film 10 to the surface of the first cooling embossing roller 102.

[0033] Combined with Figure 1 、 2 , here the rubber compression roller 107, its material properties can make it closely attached to the first cooling embossing roller 102, to ensure that the PVB film 10 passing between the rubber compression roller 107 and the first cooling embossing roller 102 remains flat, avoiding some PVB film 10 that is not attached or not attached, uneven cooling, wrinkling and other situations.

[0034] Further, the first cooling embossing roller 102 and the second cooling embossing roller 105 have a diameter of 600mm, and the cooling traction roller 103 has a diameter of 400mm.

[0035] Example 2

[0036] As another embodiment of the utility model, the heat treatment and thickness measurement unit 2 comprises a heat treatment assembly 201 and a thickness measurement assembly 202, wherein the thickness measurement assembly 202 is arranged on the side of the base 301 close to the casting unit 1; the heat treatment assembly 201 comprises a heating roller assembly and a first traction roller assembly 2014; the heating roller assembly comprises a first base plate 2011, two heating steel rollers 2012 and two first positioning rollers 2013 arranged on the first base plate 2011; the two heating steel rollers 2012 are arranged in an up-down distribution, and the two first positioning rollers 2013 are arranged in a left-right staggered distribution; the tail end of the PVB film 10 sequentially passes through the thickness measurement assembly 202 and the first positioning roller 2013 and sequentially passes around the right first positioning roller 2013, the lower heating steel roller 2012, the upper heating steel roller 2012 and the left first positioning roller 2013 in a loop trajectory and extends towards the supporting roller unit 3.

[0037] In combination with Figure 1 , the heat treatment assembly 201 and the thickness measurement assembly 202 of the heat treatment and thickness measurement unit 2 are arranged in a left-right distribution as shown in Figure 1 ; here, the thickness measurement assembly 202 is a mature existing technology, and thus will not be described in detail; the PVB film 10 after measurement can extend towards the heating steel roller 2012 and the first positioning roller 2013 through the first traction roller assembly 2014 of the heat treatment assembly 201; the overall extension trajectory is approximately in the shape of the number 8; specifically, the PVB film 10 sequentially passes around the right first positioning roller 2013, the lower heating steel roller 2012, the upper heating steel roller 2012 and the left first positioning roller 2013 in a loop trajectory and extends towards the supporting roller unit 3; the loop trajectory makes the PVB film 10 as close as possible to the surface of the two heating steel rollers 2012, so as to eliminate the internal stress generated by the rapid cooling of the film; at the same time, the heating steel roller 2012 adopts steel roller electric heating; compared with the traditional oven, only electric heating is used, and the dehumidifier and high-temperature steam of the traditional oven are not needed, so that the production environment is improved and energy consumption is saved.

[0038] Further, the supporting roller unit 3 comprises a base 301 and two supporting plates 302 arranged in a stepped distribution on the top of the base 301; a plurality of roller shafts 303 are rollingly arranged on the upper surface of each supporting plate 302; each roller shaft 303 is in communication with a hot air pipe arranged in the supporting plate 302 and is used for dehumidifying the PVB film 10.

[0039] In combination with Figure 1 , the plurality of roller shafts 303 can support the PVB film 10 and play a role in dehumidifying, removing some moisture contained in the film and reducing the moisture content and shrinkage of the film.

[0040] Further, the cooling unit 4 comprises a second base plate 401, and a cooling assembly and a second traction roller assembly 404 arranged on the second base plate 401, wherein the second traction roller assembly 404 has the same structure as the first traction roller assembly 2014; the second traction roller assembly 404 comprises a mounting frame 4041 arranged on the second base plate 401, a first transmission roller 4043 rotatably arranged on the mounting frame 4041, and a second transmission roller 4044 rotatably arranged on the second base plate 401, and the second transmission roller 4044 is arranged symmetrically with the first transmission roller 4043; and a variable frequency motor 4042 arranged on the mounting frame 4041, and the variable frequency motor 4042 is used to drive the first transmission roller 4043 to rotate.

[0041] The PVB film 10 in the present forming process can be pulled by the second traction roller assembly 404 and the first traction roller assembly 2014, so as to ensure that a single area of the PVB film 10 sequentially completes the processes of casting forming, heat treatment and thickness measurement, and cooling, and the PVB film 10 is combined with the first base plate 201 and the second base plate 401 to form a PVB film 10 with a certain thickness. Figure 1 、 3 Here, the second traction roller assembly 404 has the same structure as the first traction roller assembly 2014, and here only the second traction roller assembly 404 is explained and described. The first transmission roller 4043 and the second transmission roller 4044 are arranged symmetrically and placed on the upper and lower surfaces of the PVB film 10, and the first transmission roller 4043 rotates by the power provided by the variable frequency motor 4042, so that when the first transmission roller 4043 rotates, the PVB film 10 can be conveyed forward. It is worth noting that since the first transmission roller 4043 pulls the PVB film 10, the second transmission roller 4044 rotates to realize the relative movement of the first transmission roller 4043 and the second transmission roller 4044, thereby further ensuring the stability of the traction of the PVB film 10.

[0042] Further, the cooling assembly comprises two rotatable cooling roller bodies 402 and two rotatable second positioning rollers 403, wherein the two cooling roller bodies 402 are arranged in a staggered manner, and the two second positioning rollers 403 are arranged in a symmetrical manner. One end of the PVB film 10 is arranged between the first transmission roller 4043 and the second transmission roller 4044 for traction operation, and the other end sequentially passes through the two cooling roller bodies 402 and the two second positioning rollers 403 and extends forward.

[0043] Here, the two cooling roller bodies 402 serve as a cooling structure, and the positions of the two cooling roller bodies 402 and the two second positioning rollers 403 can ensure that the PVB film 10 is in large-area contact with the cooling roller bodies 402. The rotation characteristics of the cooling roller bodies 402 and the circulation of the cooling medium arranged therein can realize the rapid cooling and shaping of the PVB film 10.

[0044] Further, the cooled PVB film 10 enters the next processing process, i.e., the processes of cutting, winding and packaging.

[0045] In the utility model, unless another definite provision and limitation, the term "mount", "link", "connect", "fix" and so on term should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated, the mode of detachable installation has many, for example, can be through the way of inserting and buckling cooperation, again for example, through the way of bolt connection and so on.

[0046] The above embodiment is only used for further illustrating the utility model, and cannot be understood as limiting the protection scope of the utility model. The skilled in the art can make some non-essential improvements and adjustments to the utility model according to the content of the utility model, which falls within the protection scope of the utility model.

Claims

1. A PVB film forming apparatus characterized by, The application relates to a PVB film forming device. The application relates to a PVB film forming device. The application relates to a PVB film forming device.

2. The PVB film forming device according to claim 1, wherein the machine plate (101) is provided with a first over roller (108) and a second over roller (109) in sequence along the advancing direction of the PVB film (10), the leading end of the PVB film (10) is arranged at the position corresponding to the opening of the die (104) of the first cooling embossing roller (102), the trailing end of the PVB film (10) is arranged between the first cooling embossing roller (102) and the second cooling embossing roller (105), the cooling traction roller (103) and the compression roller (106), and the PVB film (10) is arranged in a ring shape and sequentially passes through the first over roller (108) and the second over roller (109) to extend to the heat treatment and thickness measuring unit (2).

3. The PVB film forming device according to claim 1, wherein the lower part of the machine plate (101) is further provided with a rubber compression roller (107), and the rubber compression roller (107) is arranged on the two sides of the PVB film (10) close to the first cooling embossing roller (102).

4. The PVB film forming device according to claim 1, wherein the diameter of the first cooling embossing roller (102) and the second cooling embossing roller (105) is 600 mm, and the diameter of the cooling traction roller (103) is 400 mm.

5. The PVB film forming device according to claim 1, wherein the heat treatment and thickness measuring unit (2) comprises a heat treatment assembly (201) and a thickness measuring assembly (202), and the thickness measuring assembly (202) is arranged on one side of a machine base (301) close to the casting unit (1). ​ ​ ​ ​ ​ ​ The heat treatment assembly (201) comprises a heating roller assembly and a first traction roller assembly (2014), the heating roller assembly comprises a first base plate (2011), two heating steel rollers (2012) and two first positioning rollers (2013) arranged on the first base plate (2011), wherein the two heating steel rollers (2012) are distributed in an up-down manner, and the two first positioning rollers (2013) are distributed in a left-right staggered manner; the tail end of the PVB film (10) sequentially passes through a thickness measuring assembly (202), the first positioning rollers (2013), and extends to the direction of the supporting roller unit (3) in a loop trajectory by sequentially passing around the right first positioning roller (2013), the lower heating steel roller (2012), the upper heating steel roller (2012), and the left first positioning roller (2013).

6. The PVB film forming equipment according to claim 1, characterized in that: The supporting roller unit (3) comprises a machine base (301), two supporting plates (302) arranged in a stepped manner on the top of the machine base (301), and a plurality of roller shafts (303) rotatably arranged on the upper surface of each supporting plate (302), and each roller shaft (303) is in communication with a hot air pipe arranged in the supporting plate (302) for dehumidification of the PVB film (10).

7. The PVB film forming equipment according to claim 1, characterized in that: The cooling unit (4) comprises a second base plate (401) and a cooling assembly and a second traction roller assembly (404) arranged on the second base plate (401), wherein the second traction roller assembly (404) has the same structure as the first traction roller assembly (2014); The second traction roller assembly (404) comprises a mounting bracket (4041) arranged on the second base plate (401), a first transmission roller (4043) rotatably arranged on the mounting bracket (4041), and a second transmission roller (4044) rotatably arranged on the second base plate (401), wherein the second transmission roller (4044) is arranged in an up-down symmetric manner with the first transmission roller (4043); Further comprising a variable frequency motor (4042) arranged on the mounting bracket (4041), wherein the variable frequency motor (4042) is used to drive the first transmission roller (4043) to rotate.

8. The PVB film forming equipment according to claim 7, characterized in that: The cooling assembly comprises two rotatable cooling roller bodies (402) and two rotatable second positioning rollers (403), wherein the two cooling roller bodies (402) are distributed in a left-right staggered manner, and the two second positioning rollers (403) are distributed in an up-down manner; one end of the PVB film (10) is arranged between the first transmission roller (4043) and the second transmission roller (4044) for traction operation, and the other end sequentially passes around the two cooling roller bodies (402) and the two second positioning rollers (403) and extends to the next process. ​

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