A hot pressing roller for processing light guide plate
By using a spiral radiator and ceramic sleeve design in the hot press roller, the problems of poor heat dissipation and uneven heat transfer of traditional hot press rollers are solved, more efficient heat dissipation and more balanced heat conduction are achieved, and the processing quality of the light guide plate is improved.
Patent Information
- Application Number
- CN202421492947.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-27
- Publication Date
- 2025-04-11
- Estimated Expiration
- 2034-06-27
AI Technical Summary
The lack of a good heat dissipation structure inside the traditional hot press rollers, which makes it difficult to quickly reduce the temperature of the roller surface, and uneven heat transfer, which is prone to regional temperature differences, affecting the processing quality of the light guide plate.
The spiral radiator structure is adopted to form a spiral heat dissipation air duct, which increases the internal heat dissipation area, and performs external circulation and heat dissipation through the fan. Combined with the design of the ceramic sleeve and electric heating wire, it ensures balanced heat conduction.
It achieves a more efficient heat dissipation effect, avoids the temperature difference of the roller surface, and improves the processing quality of the light guide plate and the use efficiency of the hot press roller.
Smart Images
Figure CN222742142U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of light guide plate processing, in particular to a hot pressing roller for light guide plate processing. Background Art
[0002] The light guide plate is made of optical grade acrylic / PC sheet, and then with high-tech materials with extremely high refractive index and non-light absorption, the light guide points are printed on the bottom of the optical grade acrylic sheet by laser engraving, V-shaped cross grid engraving, and UV screen printing technology. The optical grade acrylic sheet is used to absorb the light emitted from the lamp and stay on the surface of the optical grade acrylic sheet. The production process of the light guide plate has multiple processing flows, among which the forming and surface treatment of the light guide plate are its important processing flows, and special hot pressing rollers are required for hot pressing treatment. This step helps to enhance the optical performance and durability of the light guide plate, thereby improving the quality and use effect of the final product.
[0003] Hot pressing rollers are mainly used for the molding and surface treatment of light guide plates in processing. They are usually used in the hot pressing process of light guide plates to ensure the surface finish and shape accuracy of the light guide plates. However, there are still some problems: 1) Traditional hot pressing rollers do not have a good heat dissipation structure inside. When the roller surface temperature needs to be lowered to a specified range, it is unable to quickly dissipate heat to achieve a temperature control effect; 2) Traditional hot pressing rollers do not transfer heat evenly, which can easily lead to regional temperature differences on the roller surface, thereby affecting the processing quality of the light guide plates; therefore, in view of the above situation, there is an urgent need to develop a hot pressing roller for light guide plate processing to overcome the shortcomings in current practical applications and meet current needs. Utility Model Content
[0004] The utility model aims to provide a hot pressing roller for processing a light guide plate to solve the problems raised in the above-mentioned background technology.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: A hot pressing roller for processing a light guide plate, comprising a hot pressing roller and a filter box, wherein an air inlet pipe and an air outlet pipe are respectively arranged at both ends of the filter box, and the filter box is connected with the inside of the hot pressing roller through the air inlet pipe and the air outlet pipe;
[0006] The hot pressing roller includes a roller shaft, an insulating bushing, a spiral radiator, a ceramic sleeve, an electric heating wire, an outer roller, a sealing cover, a guide ring and an end seal. The spiral radiator is nested in the middle section of the roller shaft, the insulating bushing is embedded between the spiral radiator and the roller shaft, the outer roller is nested on the outside of the spiral radiator, the ceramic sleeve is embedded between the spiral radiator and the outer roller, a number of electric heating wires are embedded inside the ceramic sleeve, two guide rings are nested at both ends of the roller shaft and are tightly fitted and fixed to the spiral radiator, the end seals are nested at both ends of the roller shaft, and the sealing cover is nested on the outside of the end seals and is rotatably connected to the end seals.
[0007] Preferably, the spiral radiator consists of an inner cylinder, spiral blades and an outer cylinder. The inner cylinder is embedded in the outer cylinder. A number of spiral blades are distributed between the inner cylinder and the outer cylinder and are fixedly connected to the inner cylinder and the outer cylinder. An internal flow channel is opened inside the spiral blades, and a spiral heat dissipation duct is formed between adjacent spiral blades and the inner cylinder and the outer cylinder. Specifically, its spiral structure design can extend the internal heat dissipation duct path and achieve better heat dissipation effect.
[0008] Preferably, a capacity expansion groove is provided at the inner top of the enclosure, a first interface communicating with the capacity expansion groove is installed at the middle position of the top of the enclosure, and a second interface communicating with the interior of the enclosure is installed at the top edge of the enclosure.
[0009] Preferably, the guide ring is composed of an inner ring, a guide groove plate and an outer ring. The inner ring is embedded in the middle position of the outer ring. A number of guide groove plates are scatteredly distributed between the inner ring and the outer ring and fixedly connected to the inner ring and the outer ring. Ventilation grooves are formed between adjacent guide groove plates and the inner ring and the outer ring. A number of evenly spaced through grooves are provided on the edge of the outer ring. Specifically, the guide ring can allow the internal fluid of the spiral blade to be connected to the first interface of the cover, and at the same time, the heat dissipation duct of the spiral radiator is connected to the second interface through the ventilation groove.
[0010] Preferably, the interior of the outer ring is hollow, the end of the guide groove of the guide groove plate is connected with the interior of the outer ring and the through groove in sequence, and the side of the guide groove of the guide groove plate is connected with and fixed to the inner flow channel of the spiral blade.
[0011] Preferably, several through grooves are connected to the first interface through the capacity expansion groove. Specifically, the guide ring will rotate with the spiral radiator during operation, and external cooling water or hot liquid insulation medium can be introduced into the through groove of the guide ring through the first interface at one end, thereby achieving the effect of maintaining the internal fluid flow during the rotation of the guide ring.
[0012] Preferably, a fan is installed at the outlet end of the filter box, and the fan is connected to the air outlet duct. A three-way valve is installed at the inlet end of the filter box, and the air inlet end of the three-way valve is connected to the air inlet duct. Specifically, one of the air inlet ends of the three-way valve is connected to the outside air. When the three-way valve is switched to the air inlet end to open, the external air can be introduced into the spiral radiator to achieve an external circulation effect. When the three-way valve is switched to the end connected to the air inlet duct to open, an internal circulation effect is achieved.
[0013] Compared with the prior art, the utility model provides a hot pressing roller for processing a light guide plate, which has the following beneficial effects:
[0014] 1. The internal spiral radiator structure is used to form a spiral heat dissipation duct, which increases the internal heat dissipation area. Therefore, when combined with a fan for external circulation heat dissipation, it has a higher heat dissipation effect.
[0015] 2. The spiral blades are provided with internal flow channels, which can be connected to water cooling equipment to dissipate heat inside, or to external hot fluids to keep the inside warm or increase the temperature. When hot fluids are poured inside, the heat conduction of the heating wire can be promoted, thus promoting internal heat balance.
[0016] 3. Its several heating wires are clamped by ceramic sleeves and distributed in a ring shape, which can maintain balanced heat conduction and avoid temperature difference on the roller surface of the outer roller. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative labor:
[0018] Figure 1 This is a schematic diagram of the front structure of the utility model;
[0019] Figure 2 It is a partial cross-sectional view of the hot pressing roller of the utility model;
[0020] Figure 3 This is a schematic diagram of the structure of the ceramic sleeve of the utility model;
[0021] Figure 4 It is a partial cross-sectional view of the spiral radiator of the utility model;
[0022] Figure 5 This is a position relationship diagram of the sealing cover and the guide ring of the utility model;
[0023] Figure 6 This is a schematic diagram of the guide ring structure of the utility model;
[0024] Figure 7 This is a schematic diagram of the sealing structure of the utility model.
[0025] In the figure: 10, hot pressing roller; 101, roller shaft; 102, heat insulation bushing; 103, spiral radiator; 1031, inner cylinder; 1032, spiral blade; 1033, outer cylinder; 1034, heat dissipation duct; 1035, inner flow channel; 104, ceramic sleeve; 105, heating wire; 106, outer roller; 107, sealing cover; 1071, capacity expansion groove; 1072, first interface; 1073, second interface; 108, guide ring; 1081, inner ring; 1082, guide groove plate; 1083, outer ring; 1084, ventilation groove; 1085, through groove; 109, end seal; 20, filter box; 201, fan; 202, three-way valve; 203, air inlet pipe; 204, air outlet pipe. DETAILED DESCRIPTION
[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0027] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0028] Example:
[0029] See also Figure 1-Figure 7 The utility model provides a technical solution: a hot pressing roller for processing a light guide plate, comprising a hot pressing roller 10 and a filter box 20, wherein both ends of the filter box 20 are respectively provided with an air inlet pipe 203 and an air outlet pipe 204, and the filter box 20 is connected with the inside of the hot pressing roller 10 through the air inlet pipe 203 and the air outlet pipe 204;
[0030] The hot pressing roller 10 includes a roller shaft 101, a heat insulating bushing 102, a spiral radiator 103, a ceramic sleeve 104, a heating wire 105, an outer roller 106, a sealing cover 107, a guide ring 108 and an end seal 109. The spiral radiator 103 is nested in the middle section of the roller shaft 101, the heat insulating bushing 102 is embedded between the spiral radiator 103 and the roller shaft 101, the outer roller 106 is nested on the outside of the spiral radiator 103, the ceramic sleeve 104 is embedded between the spiral radiator 103 and the outer roller 106, a plurality of heating wires 105 are embedded inside the ceramic sleeve 104, two guide rings 108 are nested at both ends of the roller shaft 101 and are tightly fitted and fixed to the spiral radiator 103, the end seal 109 is nested at both ends of the roller shaft 101, and the sealing cover 107 is nested on the outside of the end seal 109 and is rotatably connected to the end seal 109.
[0031] Preferably, the spiral radiator 103 is composed of an inner cylinder 1031, spiral blades 1032 and an outer cylinder 1033. The inner cylinder 1031 is embedded in the outer cylinder 1033. A plurality of spiral blades 1032 are distributed between the inner cylinder 1031 and the outer cylinder 1033 and are fixedly connected to the inner cylinder 1031 and the outer cylinder 1033. An inner flow channel 1035 is opened inside the spiral blades 1032. A spiral heat dissipation duct 1034 is formed between adjacent spiral blades 1032 and the inner cylinder 1031 and the outer cylinder 1033. Specifically, the spiral structure design can extend the path of the internal heat dissipation duct 1034 to achieve a better heat dissipation effect.
[0032] Preferably, a capacity expansion groove 1071 is opened at the inner top of the enclosure 107, a first interface 1072 communicating with the capacity expansion groove 1071 is installed at the top middle position of the enclosure 107, and a second interface 1073 communicating with the interior of the enclosure 107 is installed at the top edge position of the enclosure 107.
[0033] Preferably, the guide ring 108 is composed of an inner ring 1081, a guide groove plate 1082 and an outer ring 1083. The inner ring 1081 is embedded in the inner middle position of the outer ring 1083. A number of guide groove plates 1082 are scatteredly distributed between the inner ring 1081 and the outer ring 1083 and are fixedly connected to the inner ring 1081 and the outer ring 1083. Ventilation grooves 1084 are formed between adjacent guide groove plates 1082 and the inner ring 1081 and the outer ring 1083. A number of equidistant through grooves 1085 are provided on the edge of the outer ring 1083. Specifically, the guide ring 108 can allow the internal fluid of the spiral blade 1032 to be connected to the first interface 1072 of the cover 107, and at the same time, the heat dissipation duct 1034 of the spiral radiator 103 is connected to the second interface 1073 through the ventilation groove 1085.
[0034] Preferably, the interior of the outer ring 1083 is hollow, the end of the guide groove of the guide groove plate 1082 is connected to the interior of the outer ring 1083 and the through groove 1085 in sequence, and the side of the guide groove of the guide groove plate 1082 is connected to and fixed to the inner flow channel 1035 of the spiral blade 1032.
[0035] Preferably, a plurality of through grooves 1085 are connected to the first interface 1072 via the capacity expansion groove 1071. Specifically, the guide ring 108 will rotate along with the spiral radiator 103 during operation, and external cooling water or hot liquid insulation medium can be introduced into the through grooves 1085 of the guide ring 108 through the first interface 1072 at one end, thereby achieving the effect of maintaining the internal fluid flow during the rotation of the guide ring 108.
[0036] Preferably, a fan 201 is installed at the outlet end of the filter box 20, and the fan 201 is connected to the outlet pipe 204. A three-way valve 202 is installed at the inlet end of the filter box 20, and the air inlet end of the three-way valve 202 is connected to the air inlet pipe 203. Specifically, one of the air inlet ends of the three-way valve 202 is connected to the outside air. When the three-way valve 202 is switched to the air inlet end to open, the external air can be introduced into the spiral radiator 103 to achieve an external circulation effect. When the three-way valve 202 is switched to the end connected to the air inlet pipe 203 to open, an internal circulation effect is achieved.
[0037] Working principle: During the hot pressing process, the electric heating wire 105 generates heat and conducts it evenly to the outer roller 106 through the ceramic sleeve 104, so that the heat on the roller surface of the outer roller 106 is balanced, and the light guide plate is subjected to hot pressing treatment. During the processing, the fan 201 can be started to drive the air flow in the heat dissipation duct 1034. When the three-way valve 202 is connected to one end of the heat dissipation duct 1034 through the air inlet pipe 203, the air is in an internal circulation state at this time, which can promote the internal heat conduction and make the heat conduction of the hot pressing roller 10 more balanced. When the three-way valve 202 is disconnected from the air inlet pipe 203, the connection with the outside is opened. When the air inlet end is connected, it is in an external air circulation state to achieve a heat dissipation effect. It should be noted here that during the processing, the first interface 1072 can be connected to an external chiller or a liquid heat source. The cooling water (or liquid heat source) can enter the guide ring 108 through the first interface 1072 at one end, and then be guided to the inner flow channel 1035 of the spiral blade 1032 through the guide ring 108. After flowing through the inner flow channel 1035, it is guided out by the guide ring 108 and the first interface 1072 at the other end to achieve a water-cooled cycle or a heat source cycle, which has a cooling effect or a heating and insulation effect on the hot pressing roller 10.
[0038] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.
Claims
1. A hot pressing roller for processing a light guide plate, characterized in that: It comprises a hot pressing roller (10) and a filter box (20), wherein an air inlet pipe (203) and an air outlet pipe (204) are respectively provided at two ends of the filter box (20), and the filter box (20) is connected to the interior of the hot pressing roller (10) through the air inlet pipe (203) and the air outlet pipe (204); The hot pressing roller (10) comprises a roller shaft (101), a heat insulating bushing (102), a spiral radiator (103), a ceramic sleeve (104), a heating wire (105), an outer roller (106), a sealing cover (107), a guide ring (108) and an end seal (109); the spiral radiator (103) is nested in the middle section of the roller shaft (101); the heat insulating bushing (102) is embedded between the spiral radiator (103) and the roller shaft (101); the outer roller (106) is nested in the spiral radiator (103) Externally, the ceramic sleeve (104) is embedded and installed between the spiral radiator (103) and the outer roller (106), a plurality of the heating wires (105) are embedded and installed inside the ceramic sleeve (104), the two guide rings (108) are embedded and installed at both ends of the roller shaft (101), and are tightly fitted and fixed to the spiral radiator (103), the end seals (109) are embedded and installed at both ends of the roller shaft (101), and the sealing cover (107) is embedded and installed outside the end seal (109) and is rotatably connected to the end seal (109).
2. The hot pressing roller for processing a light guide plate according to claim 1, characterized in that: The spiral radiator (103) is composed of an inner cylinder (1031), spiral blades (1032) and an outer cylinder (1033); the inner cylinder (1031) is embedded in the outer cylinder (1033); a plurality of spiral blades (1032) are distributed between the inner cylinder (1031) and the outer cylinder (1033) and are fixedly connected to the inner cylinder (1031) and the outer cylinder (1033); an inner flow channel (1035) is provided inside the spiral blades (1032); and a spiral heat dissipation duct (1034) is formed between adjacent spiral blades (1032) and the inner cylinder (1031) and the outer cylinder (1033).
3. The hot pressing roller for processing a light guide plate according to claim 1, characterized in that: The inner top of the enclosure (107) is provided with a capacity expansion groove (1071), the top middle of the enclosure (107) is provided with a first interface (1072) communicating with the capacity expansion groove (1071), and the top edge of the enclosure (107) is provided with a second interface (1073) communicating with the interior thereof.
4. The hot pressing roller for processing a light guide plate according to claim 1, characterized in that: The guide ring (108) is composed of an inner ring (1081), a guide groove plate (1082) and an outer ring (1083); the inner ring (1081) is embedded in the middle position of the outer ring (1083); a plurality of guide groove plates (1082) are scatteredly distributed between the inner ring (1081) and the outer ring (1083) and are fixedly connected to the inner ring (1081) and the outer ring (1083); ventilation grooves (1084) are formed between adjacent guide groove plates (1082) and the inner ring (1081) and the outer ring (1083); and a plurality of equally spaced through grooves (1085) are provided on the edge of the outer ring (1083).
5. The hot pressing roller for processing a light guide plate according to claim 4, characterized in that: The interior of the outer ring (1083) is hollow, the end of the guide groove of the guide groove plate (1082) is connected to the interior of the outer ring (1083) and the through groove (1085) in sequence, and the side surface of the guide groove of the guide groove plate (1082) is connected to and fixed to the inner flow channel (1035) of the spiral blade (1032).
6. The hot pressing roller for processing a light guide plate according to claim 4, characterized in that: A plurality of the through slots (1085) are connected to the first interface (1072) via the capacity expansion slot (1071).
7. The hot pressing roller for processing a light guide plate according to claim 1, characterized in that: The outlet end of the filter box (20) is equipped with a fan (201), the fan (201) is connected to an air outlet pipe (204), and the inlet end of the filter box (20) is equipped with a three-way valve (202), the air inlet end of the three-way valve (202) is connected to an air inlet pipe (203).