Anti-delamination silica gel roller and manufacturing process thereof

Abstract

The present application relates to a kind of anti delamination silica gel roller and its manufacturing process, belong to silica gel product field, it includes the inner core body of cylindrical shape, the outside surface of the inner core body is covered with the silica gel layer of cylindrical shape, the outside surface of the inner core body is equipped with the helical slot of helical shape, the inside wall of the silica gel layer is provided with helical insert strip corresponding the helical slot, the helical insert strip is embedded in the helical slot setting, and the junction of the silica gel layer and the inner core body is also provided with adhesive layer, to adhere the helical insert strip and the helical slot;The outside surface of the silica gel layer is formed with first heat-conducting silica gel layer.The present application can effectively reduce the expansion degree of silica gel layer and inner core body when high temperature operation, and effectively reduce the possibility of delamination phenomenon of silica gel layer and inner core body due to expansion.

Description

Technical Field

[0001] This invention relates to the field of silicone products, and in particular to a silicone roller with an anti-detachment layer and its preparation method. Background Technology

[0002] Silicone rollers are roller-shaped structures with a metal or other rigid material as the inner core and a silicone layer on the outside. They are widely used in embossing, printing and dyeing, and coating processes. However, because the inner core and outer layer of a silicone roller are made of different materials, their coefficients of expansion are also different. When silicone rollers are subjected to high temperatures, the inconsistent expansion of the inner and outer layers can easily lead to delamination between the outer layer and the inner core. Over time, this can cause the outer layer and inner core of the silicone roller to separate, resulting in a shorter lifespan of the silicone roller in high-temperature environments. Summary of the Invention

[0003] Based on this, the present invention provides a silicone roller for preventing delamination, comprising a cylindrical inner core, an outer surface of which is covered with a cylindrical silicone layer, a spiral groove formed on the outer surface of the inner core, a spiral insert strip provided on the inner sidewall of the silicone layer corresponding to the spiral groove, the spiral insert strip being embedded in the spiral groove, and an adhesive layer provided at the junction of the silicone layer and the inner core for adhering the spiral insert strip and the spiral groove; a first thermally conductive silicone layer is formed on the outer surface of the silicone layer.

[0004] In this invention, the silicone layer is installed on the outer surface of the inner core through a spiral insert strip on its inner side, thereby achieving a fixed connection between the silicone layer and the inner core. At the same time, the adhesive layer coated at the junction of the silicone layer and the inner core can further fix the inner core and the silicone layer. Compared with fixing the silicone layer and the inner core by adhesive alone, this invention can effectively enhance the strength of the connection structure between the silicone layer and the inner core, and can effectively reduce the possibility of delamination when the silicone layer and the inner core expand during high-temperature operation.

[0005] In addition, the first thermally conductive silicone layer formed on the surface of the silicone layer is in direct contact with the outside air. When the silicone roller is operating at high temperatures, it can dissipate the heat received by the silicone layer during the operation into the air in a timely manner, thereby effectively reducing the overall temperature of the silicone roller and reducing the degree of expansion of the silicone layer and the inner core. Consequently, it can reduce the possibility of delamination of the silicone layer and the inner core during high-temperature operation to a certain extent.

[0006] Furthermore, a flow channel is provided in the middle of the inner core, one end of which extends out of the end of the inner core. The inner core is also provided with a plurality of connecting holes, which connect the flow channel and the spiral groove.

[0007] In this invention, one end of the flow channel extending out of the inner core is used to connect with the dispensing equipment, so that the dispensing equipment can smoothly inject the adhesive used to form the adhesive layer into the spiral groove, thereby bonding the spiral groove and the spiral insert strip together and improving the strength of the connection structure between the silicone layer and the inner core.

[0008] Furthermore, the silicone layer is an organic silicone layer, and the outer layer of the organic silicone layer is filled with thermally conductive powder to form a first thermally conductive silicone layer.

[0009] In this invention, the silicone layer and the first thermally conductive silicone layer on its outer side are integrally molded, which can effectively ensure the overall structural strength of the silicone layer and improve the durability of the silicone roller.

[0010] Furthermore, the inner side of the silicone layer is also filled with thermally conductive powder to form a second thermally conductive silicone layer, and the second thermally conductive silicone layer extends beyond both ends of the silicone layer.

[0011] In this invention, the second thermally conductive silicone layer formed on the inner side of the silicone layer is in direct contact with the inner core. It can dissipate the heat of the silicone layer and the inner core in a timely manner, thereby reducing the expansion of the silicone layer and the inner core. This can effectively reduce the phenomenon of delamination between the silicone layer and the inner core due to expansion.

[0012] The spiral embedded strips on the silicone layer form the second thermally conductive silicone layer, which can effectively increase the heat exchange area between the second thermally conductive silicone layer and the inner core, and effectively increase the heat dissipation effect of the second thermally conductive silicone layer on the inner core.

[0013] Furthermore, the thermally conductive powder is one or more of the following: alumina powder, magnesium oxide powder, aluminum nitride powder, boron nitride powder, and silicon carbide powder.

[0014] Furthermore, it also includes an auxiliary heat-conducting device, which includes a first heat-conducting ring in the shape of an annulus disposed on the outer surface of the second heat-conducting silicone layer. The first heat-conducting ring is sleeved on the end of the outer surface of the second heat-conducting silicone layer, and a plurality of fan blades are disposed around the outer surface of the first heat-conducting ring to form a heat dissipation fan structure.

[0015] In this invention, the fan structure formed by the fan blades on the first heat-conducting ring generates airflow when the silicone roller rotates, thereby accelerating the heat dissipation speed of the second heat-conducting silicone layer, further reducing the temperature of the silicone layer and the inner core, thereby further reducing the expansion of the silicone layer and the inner core, and effectively reducing the probability of delamination between the silicone layer and the inner core.

[0016] Furthermore, the portion of the second thermally conductive silicone layer extending beyond the silicone layer is also fitted with a second thermally conductive ring, which is a thermally conductive silicone ring and simultaneously abuts against both the first thermally conductive silicone layer and the second thermally conductive silicone layer.

[0017] In this invention, the second thermally conductive ring is used to connect the first thermally conductive silicone layer and the second thermally conductive silicone layer, so that the heat dissipation fan structure on the first thermally conductive ring can accelerate the heat dissipation speed of the first thermally conductive silicone layer, thereby accelerating the overall heat dissipation speed of the silicone roller.

[0018] The present invention also provides a manufacturing process for an anti-detachment silicone roller, comprising the following steps:

[0019] S1. Prepare a cylindrical inner core, and machine spiral grooves in a spiral shape on the outer surface of the inner core;

[0020] S2. A cylindrical silicone layer is obtained by molding with silicone rubber, and a spiral insert strip is formed on the inner surface of the silicone layer.

[0021] S3. Align the spiral insert strip of the silicone layer with the spiral groove of the inner core, and screw the silicone layer into the inner core.

[0022] S4. Glue is injected into the flow channel through the end of the inner core, allowing the glue to enter the spiral groove through the connecting hole, thus achieving mutual adhesion between the spiral insert strip of the silicone layer and the spiral groove of the inner core.

[0023] Furthermore, in step S2, the silicone layer is formed by injection molding.

[0024] Furthermore, in step S3, the adhesive used is a thermally conductive adhesive; wherein, the thermally conductive adhesive can fill the gap between the silicone layer and the inner core, thereby improving the thermal conductivity between the silicone layer and the inner core.

[0025] The principles and effects of the present invention will be further explained below with reference to the above technical solutions and accompanying drawings:

[0026] In this invention, the silicone layer is installed on the outer surface of the inner core through a spiral insert strip on its inner side, thereby achieving a fixed connection between the silicone layer and the inner core. At the same time, the adhesive layer coated at the junction of the silicone layer and the inner core can further fix the inner core and the silicone layer. Compared with fixing the silicone layer and the inner core by adhesive alone, this invention can effectively enhance the strength of the connection structure between the silicone layer and the inner core, and can effectively reduce the possibility of delamination when the silicone layer and the inner core expand during high-temperature operation.

[0027] In addition, the first thermally conductive silicone layer formed on the surface of the silicone layer is in direct contact with the outside air. When the silicone roller is operating at high temperatures, it can dissipate the heat received by the silicone layer during the operation into the air in a timely manner, thereby effectively reducing the overall temperature of the silicone roller and reducing the degree of expansion of the silicone layer and the inner core. Consequently, it can reduce the possibility of delamination of the silicone layer and the inner core during high-temperature operation to a certain extent. Attached Figure Description

[0028] Figure 1 This is a schematic cross-sectional view of the silicone roller with the anti-detachment layer described in an embodiment of the present invention.

[0029] Explanation of reference numerals in the attached figures:

[0030] 1-Inner core, 11-Flow channel, 12-Connecting hole, 13-Spiral groove, 2-Silicone layer, 21-First thermally conductive silicone layer, 22-Second thermally conductive silicone layer, 221-Spiral insert strip, 3-First thermally conductive ring, 4-Fan blade, 5-Second thermally conductive ring. Detailed Implementation

[0031] To facilitate understanding by those skilled in the art, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments:

[0032] like Figure 1 A silicone roller with anti-detachment coating and its preparation method are disclosed. The roller comprises a cylindrical inner core 1, the outer surface of which is covered with a cylindrical silicone layer 2. A spiral groove 13 is formed on the outer surface of the inner core 1. A spiral insert strip 221 is provided on the inner wall of the silicone layer 2 corresponding to the spiral groove 13. The spiral insert strip 221 is embedded in the spiral groove 13. An adhesive layer is also provided at the junction of the silicone layer 2 and the inner core 1 to adhere the spiral insert strip 221 and the spiral groove 13. A first thermally conductive silicone layer 21 is formed on the outer surface of the silicone layer 2.

[0033] In this invention, the silicone layer 2 is installed on the outer surface of the inner core 1 by means of a spiral insert 221 on its inner side, thereby achieving a fixed connection between the silicone layer 2 and the inner core 1. At the same time, the adhesive layer coated at the junction of the silicone layer 2 and the inner core 1 can further fix the inner core 1 and the silicone layer 2. Compared with fixing the silicone layer 2 and the inner core 1 by adhesive alone, this invention can effectively enhance the strength of the connection structure between the silicone layer 2 and the inner core 1, and can effectively reduce the possibility of delamination when the silicone layer 2 and the inner core 1 expand during high-temperature operation.

[0034] In addition, the first thermally conductive silicone layer 21 formed on the surface of the silicone layer 2 is in direct contact with the outside air. When the silicone roller is operating at high temperature, it can dissipate the heat received by the silicone layer 2 during the operation into the air in a timely manner, thereby effectively reducing the overall temperature of the silicone roller and reducing the degree of expansion of the silicone layer 2 and the inner core 1. Accordingly, it can reduce the possibility of delamination of the silicone layer 2 and the inner core 1 during high-temperature operation to a certain extent.

[0035] In one embodiment, a flow channel 11 is provided in the middle of the inner core 1, one end of the flow channel 11 extends out of the end of the inner core 1, and a plurality of connecting holes 12 are also provided in the inner core 1, the connecting holes 12 connecting the flow channel 11 and the spiral groove 13.

[0036] In this embodiment, the flow channel 11 extends out of one end of the inner core 1 for connection with the dispensing equipment, so that the dispensing equipment can smoothly inject the adhesive used to form the adhesive layer into the spiral groove 13, thereby bonding the spiral groove 13 and the spiral insert 221 together and improving the strength of the connection structure between the silicone layer 2 and the inner core 1.

[0037] In one embodiment, the silicone layer 2 is an organic silicone layer 2, and the outer layer of the organic silicone layer 2 is filled with thermally conductive powder to form a first thermally conductive silicone layer 21.

[0038] In this embodiment, the silicone layer 2 and the first thermally conductive silicone layer 21 on its outer side are integrally formed, which can effectively ensure the strength of the overall structure of the silicone layer 2 and improve the durability of the silicone roller.

[0039] In one embodiment, the inner side of the silicone layer 2 is also filled with thermally conductive powder to form a second thermally conductive silicone layer 22, and the second thermally conductive silicone layer 22 extends out of both ends of the silicone layer 2.

[0040] In this embodiment, the second thermally conductive silicone layer 22 formed on the inner side of the silicone layer 2 is in direct contact with the inner core 1. It can dissipate the heat of the silicone layer 2 and the inner core 1 in a timely manner, thereby reducing the expansion of the silicone layer 2 and the inner core 1. This can effectively reduce the phenomenon of delamination between the silicone layer 2 and the inner core 1 due to expansion.

[0041] The spiral embedded strip 221 on the silicone layer 2 is formed in the second thermally conductive silicone layer 22, which can effectively increase the heat exchange area between the second thermally conductive silicone layer 22 and the inner core 1, and can effectively increase the heat dissipation effect of the second thermally conductive silicone layer 22 on the inner core 1.

[0042] In one embodiment, the thermally conductive powder is one or more of alumina powder, magnesium oxide powder, aluminum nitride powder, boron nitride powder, and silicon carbide powder.

[0043] One embodiment further includes an auxiliary heat conduction device, which includes a first annular heat conduction ring 3 disposed on the outer surface of the second thermally conductive silicone layer 22. The first heat conduction ring 3 is sleeved on the end of the outer surface of the second thermally conductive silicone layer 22, and a plurality of fan blades 4 are disposed around the outer surface of the first heat conduction ring 3 to form a heat dissipation fan structure.

[0044] In this invention, the fan structure formed by the fan blades 4 on the first heat-conducting ring 3 generates airflow when the silicone roller rotates, thereby accelerating the heat dissipation speed of the second heat-conducting silicone layer 22, further reducing the temperature of the silicone layer 2 and the inner core 1, thereby further reducing the expansion of the silicone layer 2 and the inner core 1, and effectively reducing the probability of delamination of the silicone layer 2 and the inner core 1.

[0045] In one embodiment, the portion of the second thermally conductive silicone layer 22 extending beyond the silicone layer 2 is further fitted with a second thermally conductive ring 5. The second thermally conductive ring 5 is a thermally conductive silicone ring, and the second thermally conductive ring 5 simultaneously abuts against the first thermally conductive silicone layer 21 and the second thermally conductive silicone layer 22.

[0046] In this embodiment, the second thermally conductive ring 5 is used to connect the first thermally conductive silicone layer 21 and the second thermally conductive silicone layer 22, so that the heat dissipation fan structure on the first thermally conductive ring 3 can accelerate the heat dissipation speed of the first thermally conductive silicone layer 21, thereby accelerating the overall heat dissipation speed of the silicone roller.

[0047] The present invention also provides a manufacturing process for an anti-detachment silicone roller, comprising the following steps:

[0048] S1. Prepare a cylindrical inner core 1, and machine a spiral groove 13 in a spiral shape on the outer surface of the inner core 1;

[0049] S2. A cylindrical silicone layer 2 is obtained by molding with silicone, and a spiral insert strip 221 is formed on the inner surface of the silicone layer 2.

[0050] S3. Align the spiral insert strip 221 of the silicone layer 2 with the spiral groove 13 of the inner core 1, and screw the silicone layer 2 into the inner core 1.

[0051] S4. Glue is injected into the flow channel 11 through the end of the inner core 1, so that the glue enters the spiral groove 13 through the connecting hole 12, thereby achieving mutual adhesion between the spiral insert strip 221 of the silicone layer 2 and the spiral groove 13 of the inner core 1.

[0052] In one embodiment, in step S2, the silicone layer 2 is formed by injection molding.

[0053] In one embodiment, the adhesive used in step S3 is a thermally conductive adhesive; wherein, the thermally conductive adhesive can fill the gap between the silicone layer 2 and the inner core 1, thereby improving the thermal conductivity between the silicone layer 2 and the inner core 1.

[0054] The above embodiments merely illustrate several implementation methods of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A silicone roller for preventing delamination, comprising a cylindrical inner core, the outer surface of which is covered with a cylindrical silicone layer, characterized in that, The outer surface of the inner core has a spiral groove. The inner wall of the silicone layer has a spiral insert strip corresponding to the spiral groove. The spiral insert strip is embedded in the spiral groove. An adhesive layer is also provided at the junction of the silicone layer and the inner core to adhere the spiral insert strip and the spiral groove. The silicone layer is an organic silicone layer. The outer layer of the organic silicone layer is filled with thermally conductive powder to form a first thermally conductive silicone layer. The inner side of the silicone layer is also filled with thermally conductive powder to form a second thermally conductive silicone layer. The second thermally conductive silicone layer extends beyond both ends of the silicone layer. An auxiliary heat-conducting device is also included. The auxiliary heat-conducting device includes a first annular heat-conducting ring corresponding to the outer surface of the second thermally conductive silicone layer. The first heat-conducting ring is sleeved on the end of the outer surface of the second thermally conductive silicone layer. Several fan blades are arranged around the outer surface of the first heat-conducting ring to form a cooling fan structure.

2. The silicone roller for preventing delamination according to claim 1, characterized in that, The inner core has a flow channel in the middle, one end of which extends out of the end of the inner core. The inner core also has several connecting holes that connect the flow channel and the spiral groove.

3. The silicone roller for preventing delamination according to claim 1, characterized in that, The thermally conductive powder is one or more of the following: alumina powder, magnesium oxide powder, aluminum nitride powder, boron nitride powder, and silicon carbide powder.

4. A silicone roller for preventing delamination according to claim 1 or 3, characterized in that, The portion of the second thermally conductive silicone layer extending beyond the silicone layer is further fitted with a second thermally conductive ring, which is a thermally conductive silicone ring and simultaneously abuts against both the first thermally conductive silicone layer and the second thermally conductive silicone layer.

5. The manufacturing process of a silicone roller for preventing delamination as described in any one of claims 1-4, characterized in that, Includes the following steps: S1. Prepare a cylindrical inner core, and machine spiral grooves in a spiral shape on the outer surface of the inner core; S2. A cylindrical silicone layer is obtained by molding with silicone rubber, and a spiral insert strip is formed on the inner surface of the silicone layer. S3. Align the spiral insert strip of the silicone layer with the spiral groove of the inner core, and screw the silicone layer into the inner core. S4. Glue is injected into the flow channel through the end of the inner core, allowing the glue to enter the spiral groove through the connecting hole, thus achieving mutual adhesion between the spiral insert strip of the silicone layer and the spiral groove of the inner core.

6. The manufacturing process of the anti-detachment silicone roller according to claim 5, characterized in that, In step S2, the silicone layer is formed by injection molding.

7. The manufacturing process of the anti-detachment silicone roller according to claim 5, characterized in that, In step S3, the adhesive used is a thermally conductive adhesive.

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