Calender for producing PI film composite heat-conducting silica gel sheet

Abstract

The utility model is applicable to the technical field, and provides a calender for producing a P-I film composite heat-conducting silica gel sheet, which comprises a base and a shell arranged at the top end of the base, a plurality of groups of material pressing components are arranged in the shell, a material passing component is fixed at the center of the interior of the shell, a PI film to be subjected to material passing is arranged in the shell, and the PI film is arranged in the shell. The material passing assembly comprises a material passing box, a through hole is formed in one side of the material passing box, a plurality of spray heads are fixedly arranged on the surface of the inner wall of the upper side of the through hole, two material cavities distributed up and down are formed in the material passing box, the material cavities communicate with the spray heads, and a feeding assembly is fixedly arranged at the top end of the shell. A corona assembly is fixedly arranged on the front side of the material passing assembly and located in the shell. According to the utility model, the corona assembly is matched with the material pressing assembly, so that single-side corona treatment is carried out on the P I film, the surface roughness is increased, and active groups are introduced into the surface of the P I film, thereby realizing a good interface bonding effect between the P I film and the heat-conducting silica gel.

Description

Technical Field

[0001] The utility model belongs to the technical field of calendering manufacturing equipment, and particularly relates to a calender for producing PI film composite heat-conducting silica gel sheets. Background Art

[0002] In the technical field of calendering manufacturing, a calender is a very common calendering tool. Specifically, a calender refers to a machine composed of two or more rollers arranged in a certain form, which can press and spread rubber or plastic into a film with a certain thickness and surface shape at a certain temperature, and can apply rubber to fiber cord fabric or steel cord fabric.

[0003] In addition, the PI film has strong mechanical toughness and chemical resistance, as well as excellent tensile and compressive strength, which can well supplement the mechanical properties of the heat-conducting silica gel pad. The PI film has good dielectric properties, the dielectric strength is usually between 200 and 300 kV / mm, and the volume resistivity is usually between 10^16 - 10^18 Ω·cm, which can improve the electrical insulation of the heat-conducting silica gel pad.

[0004] The existing composite method generally involves first coating a primer on the surface of the PI film, drying it, and then performing composite and subsequent curing with the heat-conducting silica gel slurry. This method is relatively cumbersome, and the primer used often contains solvents or has a pungent smell, which is harmful to the health of personnel. In addition, the primer will increase the thermal resistance between the heat-conducting silica gel sheet and the PI film and reduce the thermal conductivity, while this method overcomes these disadvantages. Summary of the Utility Model

[0005] The utility model provides a calender for producing PI film composite heat-conducting silica gel sheets, aiming to solve the problems that the detection of the device lighting system usually requires inspectors to be on-site, with a large amount of detection work, long time consumption, and possible safety risks.

[0006] The utility model is realized as follows: A calender for producing PI film composite heat-conducting silica gel sheets includes a base and a housing installed at the top of the base. A number of pressing components are installed inside the housing, a material-passing component is fixed at the center inside the housing, and a PI film to be passed through is arranged inside the housing. The material-passing component includes a material-passing box, a through-hole is opened on one side of the material-passing box, a plurality of nozzles are fixedly arranged on the inner wall surface above the through-hole, two material cavities are arranged up and down inside the material-passing box, the material cavities are communicated with the plurality of nozzles, a feeding component is fixedly arranged at the top of the housing, and a corona component is fixedly arranged inside the housing on the front side of the material-passing component.

[0007] The corona assembly includes a corona box fixedly installed inside the housing, and a corona roller disposed in the inner cavity of the corona box. A material roller is arranged below the corona roller, and the material roller is installed in the inner cavity of the corona box. A blower is fixedly installed on the bottom of the base. An air duct is installed at the air outlet of the blower. An air outlet pipe is installed on the outer wall of the top of the air duct, and the end of the air outlet pipe extends into the inner cavity of the corona box. A circulating cooling pipe is fixedly installed on the inner wall of the inner cavity of the corona box. A circulating liquid outlet pipe and a circulating liquid inlet pipe are installed on the circulating cooling pipe. The circulating liquid outlet pipe is arranged above the circulating liquid inlet pipe. A circulating liquid storage bin is fixedly installed on the outer wall of the right side of the housing. The ends of the circulating liquid outlet pipe and the circulating liquid inlet pipe are both connected to the inner cavity of the circulating liquid storage bin.

[0008] Preferably, two frame plates are respectively installed on both sides of the housing. A feed inlet is provided on one side of the housing, and a discharge outlet is provided on the other side of the housing.

[0009] Preferably, the feeding assembly includes a storage bin and a suction pump. The suction pump and the storage bin are both fixed on the top of the housing, and the suction pipe of the suction pump is communicated with the inside of the storage bin. One end of the delivery pipe of the suction pump sequentially penetrates through the top of the housing and the top of the material passing box and is communicated with the inside of the material cavity.

[0010] Preferably, an annular air cavity is provided in each of the two frame plates. A plurality of air holes are provided on the inner wall surface of the frame plate, and the plurality of air holes are all communicated with the inside of the annular air cavity.

[0011] Preferably, a dust collector and a hot air blower are respectively fixed on both sides at the rear end of the housing. The dust suction port of the dust collector is communicated with the annular air cavity on one side of the housing through two dust suction pipes. The air outlet of the hot air blower is communicated with the annular air cavity on the other side of the housing through two air outlet pipes.

[0012] Preferably, several groups of material pressing assemblies are linearly arrayed in the housing. Each group of material pressing assemblies includes a material pressing roller on the upper side and a feeding roller on the lower side.

[0013] Preferably, a heat dissipation pipe is fixedly installed on the top wall of the inner cavity of the corona box. The heat dissipation pipe and the air outlet pipe are both horizontally equally divided and installed on the corona box, and the number of the heat dissipation pipe and the air outlet pipe is the same.

[0014] Compared with the prior art, the embodiments of the present application mainly have the following beneficial effects:

[0015] 1. By setting up a corona component in cooperation with a material pressing component, one-side corona treatment of the PI film is achieved, increasing its surface roughness and introducing active groups on its surface, thereby realizing the function of achieving a good interfacial bonding effect between the PI film and the thermal conductive silica gel. Through the suction of a vacuum cleaner, air and dust impurities adhering to the surface of the PI film flow through multiple air holes into the annular air cavity, and then are transported to the vacuum cleaner through the annular air cavity for storage, facilitating a comprehensive cleaning of the PI film surface and avoiding the influence of dust impurities on the uniformity of the thermal conductive silica gel slurry. Subsequently, the PI film is subjected to one-side corona treatment by the corona component, increasing its surface roughness and introducing active groups on its surface, thereby realizing a good interfacial bonding effect between the PI film and the thermal conductive silica gel. The treated PI film is drawn into the material passing component, and a suction pump is used to transport the thermal conductive silica gel slurry in the storage tank into multiple nozzles, and the nozzles evenly spray the thermal conductive silica gel slurry onto the PI film to achieve the material passing treatment on the upper surface of the PI film. Subsequently, the thermal conductive silica gel slurry is pressed onto the PI surface after corona treatment by the material pressing component. Immediately, a hot air blower conveys hot air into the annular air cavity in the right side frame plate of the housing, and the hot air sprays out through multiple air holes and forms a good composite with the PI film after curing in the drying channel;

[0016] 2. When the corona box is used for heat dissipation, the blower can be turned on through an external power supply and switch. Through the startup of the blower and the connection of the air outlet pipe and the through pipe, air-cooled heat dissipation work can be carried out in the inner cavity of the corona box. The setting of multiple heat dissipation pipes and air outlet pipes increases the convection in the corona box, making the air flow more evenly and improving the air-cooled heat dissipation effect of the blower; The circulating cooling pipe can absorb the heat generated in the inner cavity during the operation of the corona box. The circulating cooling pipe can be connected to the coolant in the inner cavity of the circulating liquid storage bin through the installation of the circulating liquid outlet pipe and the circulating liquid inlet pipe. Description of the Drawings

[0017] Figure 1 is the overall partial sectional view of the present invention;

[0018] Figure 2 is the front view of the whole of the present invention;

[0019] Figure 3 is the sectional structure schematic diagram of the whole of the present invention;

[0020] Figure 4 is the structure schematic diagram of the material passing component of the present invention;

[0021] Figure 5 is the structure schematic diagram of the frame plate of the present invention.

[0022] In the figure: 1, base; 2, housing; 3, material passing component; 301, material passing box; 302, through hole; 303, spray head; 304, material cavity; 4, frame plate; 5, material storage box; 6, suction pump; 7, annular air cavity; 8, air hole; 9, vacuum cleaner; 10, hot air blower; 11, blower; 12, through pipe; 13, air outlet pipe; 14, material roller; 15, corona roller; 16, heat dissipation pipe; 17, corona box; 18, circulating cooling pipe; 19, circulating liquid outlet pipe; 20, circulating liquid inlet pipe; 21, circulating liquid storage bin. Specific embodiments

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this application belongs; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above drawings are intended to cover non-exclusive inclusion. The terms "first", "second", etc. in the specification and claims of this application or the above drawings are used to distinguish different objects and not to describe a specific order.

[0024] Reference to "embodiment" herein means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of this application. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0025] An embodiment of the present utility model provides a calender for producing PI film composite heat-conducting silica gel sheets, as Figures 1-5 shown, including a base 1 and a housing 2 installed at the top of the base 1. A plurality of groups of material pressing components are installed inside the housing 2. A material passing component 3 is fixed at the center inside the housing 2. A PI film to be passed through is provided inside the housing 2. The material passing component 3 includes a material passing box 301. A through hole 302 is opened on one side of the material passing box 301. A plurality of spray heads 303 are fixedly provided on the inner wall surface above the through hole 302. Two material cavities 304 are arranged vertically inside the material passing box 301. The material cavities 304 are communicated with the plurality of spray heads 303. A material feeding component is fixedly provided at the top of the housing 2. A corona component is fixedly arranged on the front side of the material passing component 3 and inside the housing 2;

[0026] The corona assembly includes a corona box 17 fixedly installed inside the housing 2, and a corona roller 15 disposed in the inner cavity of the corona box 17. Below the corona roller 15, there is a material roller 14, and the material roller 14 is installed in the inner cavity of the corona box 17. A blower 11 is fixedly installed on the bottom of the base 1. An air pipe 12 is installed at the air outlet of the blower 11. An air outlet pipe 13 is installed on the outer wall of the top of the air pipe 12, and the end of the air outlet pipe 13 extends into the inner cavity of the corona box 17. A circulating cooling pipe 18 is fixedly installed on the inner wall of the inner cavity of the corona box 17. A circulating liquid outlet pipe 19 and a circulating liquid inlet pipe 20 are installed on the circulating cooling pipe 18. The circulating liquid outlet pipe 19 is arranged above the circulating liquid inlet pipe 20. A circulating liquid storage bin 21 is fixedly installed on the right outer wall of the housing 2. The ends of the circulating liquid outlet pipe 19 and the circulating liquid inlet pipe 20 are both connected to the inner cavity of the circulating liquid storage bin 21.

[0027] It should be noted that in the existing composite method, generally, a primer is first coated on the surface of the PI film, dried, and then compounded with the thermally conductive silicone paste and subsequently cured. This method is relatively cumbersome, and the primer used often contains solvents or has a pungent odor, which is harmful to human health. In addition, the primer will increase the thermal resistance between the thermally conductive silicone sheet and the PI film and reduce the thermal conductivity. However, this method overcomes these disadvantages. Therefore, in order to solve the problems that the existing calender composite method is relatively cumbersome and has a pungent odor and is harmful to human health, this solution realizes single-sided corona treatment of the PI film by setting a corona assembly in cooperation with a pressure feeding assembly, increases its surface roughness, and introduces active groups on its surface, thereby achieving a good interfacial bonding effect between the PI film and the thermally conductive silicone.

[0028] Specifically, in this embodiment, the present solution mainly realizes the function of single-sided corona treatment on the PI film by setting a corona component in cooperation with a pressure-feeding component, increasing its surface roughness, introducing active groups on its surface, so as to achieve a good interfacial bonding effect between the PI film and the thermal conductive silicone. Through the suction of the vacuum cleaner 9, the air and the dust and impurities adhering to the surface of the PI film flow into the annular air cavity 7 through a plurality of air holes 8, and then are transported to the vacuum cleaner 9 through the annular air cavity 7 for storage, which is convenient for comprehensively cleaning the surface of the PI film and avoiding the influence of dust and impurities on the uniformity of the thermal conductive silicone paste. Subsequently, the PI film is subjected to single-sided corona treatment by the corona component, increasing its surface roughness and introducing active groups on its surface, so as to achieve a good interfacial bonding effect between the PI film and the thermal conductive silicone. The treated PI film is drawn into the material-passing component 3, and the suction pump 6 is used to transport the thermal conductive silicone paste in the storage tank 5 into a plurality of nozzles 303. The nozzles 303 evenly spray the thermal conductive silicone paste onto the PI film to achieve the material-passing treatment on the upper surface of the PI film. Subsequently, the thermal conductive silicone paste is pressed onto the surface of the corona-treated PI by the pressure-feeding component. Immediately, the hot air blower 10 transports hot air into the annular air cavity 7 in the right-side frame plate 4 of the housing 2, and the hot air is ejected through a plurality of air holes 8 and forms a good composite with the PI film after curing in the drying channel.

[0029] In a further preferred embodiment of the present invention, as Figures 2-5 shown, the feeding component includes a storage tank 5 and a suction pump 6. The suction pump 6 and the storage tank 5 are both fixed at the top end of the housing 2, and the suction pipe of the suction pump 6 is internally communicated with the storage tank 5. One end of the delivery pipe of the suction pump 6 sequentially penetrates through the top end of the housing 2 and the top end of the material-passing box 301 and is internally communicated with the material cavity 304.

[0030] In this embodiment, by using the suction pump 6 to automatically transport the thermal conductive silicone paste, it is time-saving and labor-saving to use.

[0031] In a further preferred embodiment of the present invention, as Figures 1-5 shown, annular air cavities 7 are respectively formed in both frame plates 4, and a plurality of air holes 8 are formed on the inner wall surface of the frame plate 4. The plurality of air holes 8 are all internally communicated with the annular air cavity 7.

[0032] In this embodiment, through the arrangement that the plurality of air holes 8 are all internally communicated with the annular air cavity 7, it is used for cleaning and drying the PI film.

[0033] In a further preferred embodiment of the present invention, as Figures 2-5 shown, a vacuum cleaner 9 and a hot air blower 10 are respectively fixed on both sides of the rear end of the housing 2. The suction port of the vacuum cleaner 9 is internally communicated with the annular air cavity 7 on one side of the housing 2 through two suction pipes, and the air outlet of the hot air blower 10 is internally communicated with the annular air cavity 7 on the other side of the housing 2 through two air outlet pipes.

[0034] In this embodiment, through the suction of the vacuum cleaner 9, air and dust impurities adhering to the surface of the PI film flow into the annular air chamber 7 through a plurality of air holes 8, and then are transported to the vacuum cleaner 9 through the annular air chamber 7 for storage, which is convenient for comprehensively cleaning the surface of the PI film. The hot air blower 10 conveys hot air into the annular air chamber 7 in the right side frame plate 4 of the housing 2, and the hot air is ejected through a plurality of air holes 8 and forms a good composite with the PI film after curing in the drying channel.

[0035] In a further preferred embodiment of the present utility model, as Figures 2-5 shown, a heat dissipation pipe 16 is fixedly installed on the top wall of the inner cavity of the corona box 17. The heat dissipation pipe 16 and the air outlet pipe 13 are both horizontally equally divided and installed on the corona box 17, and the number of the heat dissipation pipe 16 and the air outlet pipe 13 is set to be the same.

[0036] In this embodiment, through the arrangement of a plurality of heat dissipation pipes 16 and air outlet pipes 13, the convection in the corona box 17 is increased, making the air flow more evenly.

[0037] It should be noted that for the foregoing embodiments, for the sake of simple description, they are all expressed as a series of action combinations. However, those skilled in the art should know that the present utility model is not limited by the described action sequence, because according to the present utility model, certain steps may be adopted in other sequences or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily essential to the present utility model.

[0038] In several embodiments provided by the present application, it should be understood that the disclosed device can be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the above division of units can be implemented in other ways in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point, the displayed or discussed coupling or communication connection between each other can be through some interfaces. The indirect coupling or communication connection between devices or units can be in the form of telecommunications or other forms.

[0039] The units described as separate components above may or may not be physically separated. The components shown as units may or may not be physical units, that is, they can be located in one place, or they can be distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0040] The above embodiments are only used to illustrate the technical solutions of the present utility model, rather than limiting the protection scope of the utility model. Obviously, the described embodiments are only some embodiments of the present utility model, rather than all embodiments. Based on these embodiments, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present utility model. Although the present utility model has been described in detail with reference to the above embodiments, those of ordinary skill in the art can still, without conflict and without making creative efforts, combine, add or delete the features in the embodiments of the present utility model according to the circumstances or make other adjustments, so as to obtain different technical solutions that essentially do not depart from the concept of the present utility model, and these technical solutions also fall within the scope of protection of the present utility model.

Claims

1. A calender for producing PI film composite heat-conducting silica gel sheets, characterized in that, It includes a base (1) and a housing (2) installed at the top of the base (1). Inside the housing (2), several groups of material pressing components are installed. At the center inside the housing (2), a material passing component (3) is fixed. Inside the housing (2), there is a PI film to be passed through. The material passing component (3) includes a material passing box (301). One side of the material passing box (301) is provided with a through hole (302). On the inner wall surface above the through hole (302), a plurality of spray heads (303) are fixedly arranged. Inside the material passing box (301), two material chambers (304) are arranged vertically. The material chambers (304) are communicated with the plurality of spray heads (303). At the top of the housing (2), a material feeding component is fixedly arranged. At the front side of the material passing component (3) and inside the housing (2), a corona component is fixedly arranged; The corona component includes a corona box (17) fixedly installed inside the housing (2), and a corona roller (15) arranged inside the cavity of the corona box (17). Below the corona roller (15), a material roller (14) is arranged. The material roller (14) is installed inside the cavity of the corona box (17). At the bottom of the base (1), a blower (11) is fixedly installed. At the air outlet of the blower (11), a connecting pipe (12) is installed. On the outer wall of the top of the connecting pipe (12), an air outlet pipe (13) is installed. The end of the air outlet pipe (13) extends into the cavity of the corona box (17). On the inner wall of the cavity of the corona box (17), a circulating cooling pipe (18) is fixedly installed. On the circulating cooling pipe (18), a circulating liquid outlet pipe (19) and a circulating liquid inlet pipe (20) are installed. The circulating liquid outlet pipe (19) is arranged above the circulating liquid inlet pipe (20). On the right outer wall of the housing (2), a circulating liquid storage bin (21) is fixedly installed. The ends of the circulating liquid outlet pipe (19) and the circulating liquid inlet pipe (20) are both connected to the inner cavity of the circulating liquid storage bin (21).

2. The calender according to claim 1 for producing a PI film composite heat-conducting silica gel sheet, characterized in that, On both sides of the housing (2), two frame plates (4) are respectively installed. On one side of the housing (2), a feed inlet is provided. On the other side of the housing (2), a discharge outlet is provided.

3. The calender according to claim 2 for producing a PI film composite thermally conductive silicone sheet, characterized in that, The material feeding component includes a storage box (5) and a suction pump (6). The suction pump (6) and the storage box (5) are both fixed at the top of the housing (2). And the suction pipe of the suction pump (6) is communicated with the inside of the storage box (5). One end of the delivery pipe of the suction pump (6) sequentially penetrates the top of the housing (2) and the top of the material passing box (301) and is communicated with the inside of the material chamber (304).

4. The calender as claimed in claim 3 for producing a PI film composite heat-conducting silica gel sheet, characterized in that, Inside both frame plates (4), an annular air cavity (7) is provided. On the inner wall surface of the frame plate (4), a plurality of air holes (8) are provided. The plurality of air holes (8) are all communicated with the inside of the annular air cavity (7).

5. The calender according to claim 3 for producing a PI film composite heat-conducting silica gel sheet, characterized in that, At the two sides of the rear end of the housing (2), a vacuum cleaner (9) and a hot air blower (10) are respectively fixedly arranged. The dust suction port of the vacuum cleaner (9) is communicated with the annular air cavity (7) on one side of the housing (2) through two dust suction pipes. The air outlet of the hot air blower (10) is communicated with the annular air cavity (7) on the other side of the housing (2) through two air outlet pipes.

6. The calender according to claim 4 for producing a PI film composite heat-conducting silica gel sheet, characterized in that, A plurality of sets of material pressing components are linearly arrayed in the housing (2), and each set of material pressing components includes a material pressing roller on the upper side and a material feeding roller on the lower side.

7. The calender for producing the PI film composite heat-conducting silica gel sheet according to claim 1, characterized in that, A heat dissipation pipe (16) is fixedly installed on the top wall of the inner cavity of the corona box (17). The heat dissipation pipe (16) and the air outlet pipe (13) are both horizontally equally divided and installed on the corona box (17), and the number of the heat dissipation pipe (16) and the air outlet pipe (13) is set to be the same.

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