Rolling contact type membrane surface edge heating device

Abstract

The utility model discloses a rolling contact type membrane surface edge heating device which comprises a wheel set spacing adjusting mechanism and a heating assembly, the heating assembly is composed of an upper heat conduction wheel set, a lower heat conduction wheel set and a heat source, the upper heat conduction wheel set comprises three rolling heat conduction wheel units arranged in parallel and an upper wheel set installation seat, and the lower heat conduction wheel set comprises a lower wheel set installation seat. The lower heat conduction wheel set comprises two rolling heat conduction wheel units arranged in parallel and a lower wheel set installation base, the heat source comprises an infrared heating pipe, a lamp tube fixing piece and a lamp tube supporting column, the infrared heating pipe is arranged between the rolling heat conduction wheel units of the upper wheel set installation base and the lower wheel set installation base, and heat conduction wheels of the rolling heat conduction wheel units are heated through heat radiation. The wheel set distance adjusting mechanism comprises a stepping motor, a motor base, a coupler, a high-temperature bearing, an adjusting base, a left-handed lead screw nut, a right-handed lead screw nut, a trapezoidal lead screw, a linear bearing and a guide shaft. The design that rolling contact type heating is adopted, and the distance between the two sets of heat conduction wheels is adjustable is adopted, film idle running loss is reduced, and the utilization rate is increased.

Description

Technical Field

[0001] The utility model relates to the field of vacuum coating equipment, in particular to a rolling contact type film surface edge heating device. Background Art

[0002] When heating in a vacuum, the heat source is usually infrared quartz tubes, electric heating wires and other materials that can be directly heated, and the power supply passes through the wall of the vacuum container through a special wire passer; or, the heat source is an armored heating tube, and the heating tube is introduced from a sealed port on the wall side, and the power cord does not enter the vacuum; in this way, cooling water needs to be passed through the port to cool the seal, and the structure is relatively complex. Moreover, when the port is far from the heating position, the heating tube must also be very long, resulting in unnecessary waste; in comparison, the use of infrared quartz tubes is much simpler and has less loss; in addition, in a vacuum environment, because there is no air, heat transfer can only be achieved through thermal contact or thermal radiation. However, for some film materials, such as transparent PET film, its infrared absorption rate is very low, and the thermal radiation heating method is extremely inefficient and has almost no effect, especially in the absence of thermal convection in a vacuum. Therefore, this material can only be heated by thermal contact, but this method will produce a certain friction for the roll-to-roll film, which may affect the overall winding effect. In addition, sliding friction can easily scratch the film surface. Utility Model Content

[0003] In view of the above problems, the utility model provides a rolling contact type film surface edge heating device, which is suitable for roll-to-roll coating equipment in a vacuum and effectively solves the problem of heating the edge of the film roll.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a rolling contact type membrane edge heating device, including a wheel group spacing adjustment mechanism and a heating component, the heating component is composed of an upper heat-conducting wheel group, a lower heat-conducting wheel group and a heat source, the upper heat-conducting wheel group includes three parallel rolling heat-conducting wheel units and an upper wheel group mounting seat, the lower heat-conducting wheel group includes two parallel rolling heat-conducting wheel units and a lower wheel group mounting seat, the three rolling heat-conducting wheel units of the upper heat-conducting wheel group are staggered with the two rolling heat-conducting wheel units of the lower heat-conducting wheel group, the rolling heat-conducting wheel unit includes a roller shaft, a roller bearing, a heat-conducting wheel, and a fixing screw, one end of the roller shaft is sleeved with a heat-conducting wheel and is locked and fixed by a fixing screw, and the other end is connected to the upper wheel group mounting seat or the lower wheel group mounting seat through a roller bearing, the heat source includes an infrared heating tube, a lamp tube fixing piece, and a lamp tube support column. The infrared heating tube is arranged in the middle of the rolling heat-conducting wheel unit of the upper wheel group mounting seat and the lower wheel group mounting seat, and the heat radiation heats the heat-conducting wheel of the rolling heat-conducting wheel unit. The infrared heating tube is fixedly mounted on the lamp tube support column through a lamp tube fixing piece. The wheel group spacing adjustment mechanism includes a stepping motor, a motor seat, a coupling, a high-temperature bearing, an adjustment base, a left-handed screw nut, a right-handed screw nut, a trapezoidal screw, a linear bearing, and a guide shaft. The stepping motor drives the left-handed screw nut, the right-handed screw nut, and the trapezoidal screw to rotate through a coupling and a high-temperature bearing. The left-handed screw nut is connected to the lower wheel group mounting seat, and the right-handed screw nut is connected to the upper wheel group mounting seat. The guide shaft is fixedly mounted on the adjustment base and is arranged parallel to the left-handed screw nut and the right-handed screw nut. The guide shaft is slidably connected to the lower wheel group mounting seat and the upper wheel group mounting seat respectively through linear bearings.

[0005] Furthermore, temperature sensors are respectively provided at the heat transfer wheel and the film outlet of the heating assembly.

[0006] Furthermore, insulating gaskets and insulating bushings are installed between the heat-conducting wheel, the heat-conducting wheel shaft and the fixed screw of each rolling heat-conducting unit for isolation, and the film does not affect the normal use of the heating device when power is turned on.

[0007] Furthermore, the upper heat-conducting wheel assembly and the lower heat-conducting wheel assembly are respectively equipped with heat insulation plates and spacers between the infrared heating tube and the upper wheel assembly mounting seat and the lower wheel assembly mounting seat to prevent the wheel assembly mounting seat from being directly heated, reduce the heating temperature of the bearing, and increase the service life.

[0008] Furthermore, the stepper motor is fixedly installed below the adjustment base via a motor seat.

[0009] Furthermore, the wheel set spacing adjustment mechanism is also provided with a position sensor and a sensor adjustment plate for determining the initial spacing between the upper and lower wheel sets on the adjustment base, which are used to determine the initial spacing between the upper and lower wheel sets.

[0010] From the above description of the structure of the utility model, it can be seen that compared with the prior art, the utility model has the following advantages:

[0011] The utility model adopts rolling contact heating to improve the heating efficiency and better protect the membrane surface. The design of the adjustable spacing between the two sets of heat transfer wheels can make the heat transfer wheel set away from the membrane surface during the heating stage and the cooling stage, so as to reduce the loss of film running and improve the utilization rate. There are two sets of temperature sensors to respectively detect the temperature of the heat transfer wheel and the heated membrane surface, so as to realize the closed-loop control of the heating device. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0013] Figure 1 This is a schematic diagram of the front axial structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the reverse shaft side structure of the utility model;

[0015] Figure 3 This is a schematic diagram of the heat transfer wheel spacing adjustment principle of the utility model. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0017] Example

[0018] refer to Figure 1-Figure 3A rolling contact type membrane edge heating device comprises a heating assembly and a wheel group spacing adjustment mechanism, wherein the heating assembly is composed of an upper heat-conducting wheel group, a lower heat-conducting wheel group and a heat source, wherein the upper heat-conducting wheel group comprises three rolling heat-conducting wheel units arranged in parallel, an upper wheel group mounting seat 9, and the lower heat-conducting wheel group comprises two rolling heat-conducting wheel units arranged in parallel, a lower wheel group mounting seat 6, wherein the three rolling heat-conducting wheel units of the upper heat-conducting wheel group are staggered with the two rolling heat-conducting wheel units of the lower heat-conducting wheel group, and the rolling heat-conducting wheel units of the lower heat-conducting wheel group are staggered with the rolling heat-conducting wheel units of the upper heat-conducting wheel group. The heat transfer wheel unit comprises a roller shaft 11, a roller bearing 12, a heat transfer wheel 13, and a fixing screw 15. The heat transfer wheel 13 is sleeved on one end of the roller shaft 11 and is locked and fixed by the fixing screw 15. The other end is connected to the upper wheel assembly mounting seat 9 or the lower wheel assembly mounting seat 6 through the roller bearing 12. The heat source comprises an infrared heating tube 18, a lamp tube fixing member 21, and a lamp tube support column 22. The infrared heating tube 18 is arranged in the rolling heat transfer wheel unit of the upper wheel assembly mounting seat 9 and the lower wheel assembly mounting seat 6. The heat conduction wheel of the rolling heat conduction wheel unit is heated by heat radiation. The infrared heating tube 18 is fixedly mounted on the lamp support column 22 through the lamp fixture 21. The wheel group spacing adjustment mechanism includes a stepper motor 1, a motor seat 2, a coupling 3, a high-temperature bearing 4, an adjustment base 5, a left-handed screw nut 7, a right-handed screw nut 8, a trapezoidal screw 10, a linear bearing 23, and a guide shaft 24. The stepper motor 1 is fixedly mounted below the adjustment base 5 through the motor seat 2. The motor 1 drives the left-handed screw nut 7, the right-handed screw nut 8, and the trapezoidal screw 10 to rotate through the coupling 3 and the high-temperature bearing 4. The left-handed screw nut 7 is connected to the lower wheel assembly mounting seat 6, and the right-handed screw nut 8 is connected to the upper wheel assembly mounting seat 9. The guide shaft 24 is fixedly mounted on the adjustment base 5 and is arranged parallel to the left-handed screw nut 7 and the right-handed screw nut 8. The guide shaft 24 is slidably connected to the lower wheel assembly mounting seat 6 and the upper wheel assembly mounting seat 9 through linear bearings 23.

[0019] The heat transfer wheel 13 and the film outlet of the heating assembly are respectively provided with temperature sensors 17 for temperature monitoring.

[0020] Insulating gaskets 14 and insulating bushings 16 are installed between the heat-conducting wheel 13 of each rolling heat-conducting unit and the heat-conducting wheel shaft 11 and the fixing screw 15 for isolation. The film does not affect the normal use of the heating device when power is on.

[0021] The upper heat-conducting wheel assembly and the lower heat-conducting wheel assembly are respectively equipped with a heat insulation plate 19 and a spacer block 20 between the infrared heating tube 18 and the upper wheel assembly mounting seat 9 and the lower wheel assembly mounting seat 6 to prevent the wheel assembly mounting seat from being directly heated, reduce the heating temperature of the bearing, and increase the service life.

[0022] The wheel spacing adjustment mechanism is further provided with a position sensor 26 and a sensor adjustment plate 27 for determining the initial spacing between the upper and lower wheel sets on the adjustment base 5, which are used to determine the initial spacing between the upper and lower wheel sets.

[0023] Heating principle: Heating is divided into three stages, namely the heat transfer wheel heating stage, the process heating stage, and the heat transfer wheel cooling stage. In the heat transfer wheel 13 heating stage, before heating the film 28, the wheel group spacing adjustment mechanism first adjusts the spacing between the upper and lower heat transfer wheel 13 groups so that the heat transfer wheel 13 is away from the film surface, and then the infrared heating tube 18 is energized to first heat the metal heat transfer wheel 13 through thermal radiation to reach the process temperature; in the process heating stage, the wheel group spacing adjustment mechanism adjusts the spacing between the upper and lower heat transfer wheel groups so that the two heat transfer wheel 13 groups fit the film surface, and the heat transfer wheel 13 starts to heat the film 28; in the heat transfer wheel 13 cooling stage, when the heating of the film 28 is completed, the wheel group spacing adjustment mechanism adjusts the spacing between the upper and lower heat transfer wheel groups so that the heat transfer wheel 13 is away from the film surface again, the infrared heating tube 18 is powered off, and the heat transfer wheel 13 starts to cool; the heat transfer wheel 13 and the film outlet of the heating device are equipped with a temperature sensor 17 for temperature monitoring;

[0024] Principle of the wheel group spacing adjustment mechanism: The main function of this mechanism is to control the spacing S between the heat transfer wheel 13 and the film 28. The actuator adopts a stepper motor 1 to achieve accurate and adjustable position; the transmission element adopts a set of trapezoidal screw nut pairs with left and right rotation (left-hand screw nut 7, right-hand screw nut 8, trapezoidal screw 10), wherein the left-hand screw nut 7 is connected to the lower wheel group mounting seat 6, and the right-hand screw nut 8 is connected to the upper wheel group mounting seat 9; the actuator and the transmission element are connected by a coupling 3; the guide is composed of a linear bearing 23 and a guide shaft 24; the position sensor 26 and the sensor adjustment plate 27 are used to determine the initial spacing between the upper and lower wheel groups; when the heat transfer wheel 13 needs to be away from the film 28, the stepper motor reverses, and under the action of the left-hand screw nut 7 and the right-hand screw nut 8, the upper heat transfer wheel group moves upward and the lower heat transfer wheel group moves downward; conversely, when the heat transfer wheel 13 needs to fit the film 28, the stepper motor rotates forward.

[0025] The utility model adopts rolling contact heating to improve the heating efficiency and better protect the membrane surface. The design of the adjustable spacing between the two sets of heat transfer wheels can make the heat transfer wheel set away from the membrane surface during the heating stage and the cooling stage, so as to reduce the loss of film running and improve the utilization rate. There are two sets of temperature sensors to respectively detect the temperature of the heat transfer wheel and the heated membrane surface, so as to realize the closed-loop control of the heating device.

[0026] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A rolling contact type membrane edge heating device, characterized in that: The invention comprises a heating component and a wheel group spacing adjustment mechanism, wherein the heating component is composed of an upper heat-conducting wheel group, a lower heat-conducting wheel group and a heat source, the upper heat-conducting wheel group comprises three rolling heat-conducting wheel units arranged in parallel, an upper wheel group mounting seat (9), and the lower heat-conducting wheel group comprises two rolling heat-conducting wheel units arranged in parallel, and a lower wheel group mounting seat (6), the three rolling heat-conducting wheel units of the upper heat-conducting wheel group and the two rolling heat-conducting wheel units of the lower heat-conducting wheel group are arranged in a staggered manner, and the rolling heat-conducting wheel units comprise a roller shaft (11), a roller bearing (12), a heat-conducting wheel (13), a fixing screw (15), one end of the roller shaft (11) is sleeved with a heat-conducting wheel (13) and is locked and fixed by the fixing screw (15), and the other end is connected to the upper wheel assembly mounting seat (9) or the lower wheel assembly mounting seat (6) through a roller bearing (12), the heat source comprises an infrared heating tube (18), a lamp tube fixing member (21), and a lamp tube supporting column (22), the infrared heating tube (18) is arranged between the rolling heat-conducting wheel unit of the upper wheel assembly mounting seat (9) and the lower wheel assembly mounting seat (6), and the heat radiation heats the rolling heat-conducting wheel unit. The heat transfer wheel (13) of the heat wheel unit, the infrared heating tube (18) is fixedly mounted on the lamp tube support column (22) through a lamp tube fixing piece (21), the wheel group spacing adjustment mechanism comprises a stepping motor (1), a motor seat (2), a coupling (3), a high-temperature bearing (4), an adjustment base (5), a left-handed screw nut (7), a right-handed screw nut (8), a trapezoidal screw (10), a linear bearing (23), and a guide shaft (24), the stepping motor (1) is fixedly mounted on the lamp tube support column (22) through a coupling (3) and a high-temperature bearing (4) The left-hand screw nut (7), the right-hand screw nut (8) and the trapezoidal screw (10) are driven to rotate. The left-hand screw nut (7) is connected to the lower wheel assembly mounting seat (6), and the right-hand screw nut (8) is connected to the upper wheel assembly mounting seat (9). The guide shaft (24) is fixedly mounted on the adjustment base (5) and arranged parallel to the left-hand screw nut (7) and the right-hand screw nut (8). The guide shaft (24) is slidably connected to the lower wheel assembly mounting seat (6) and the upper wheel assembly mounting seat (9) respectively through a linear bearing (23).

2. The rolling contact type membrane edge heating device according to claim 1, characterized in that: The heat transfer wheel (13) and the film outlet of the heating assembly are respectively provided with temperature sensors (17).

3. The rolling contact type membrane edge heating device according to claim 1, characterized in that: An insulating gasket (14) and an insulating bushing (16) are installed between the heat-conducting wheel (13) of each rolling heat-conducting unit and the heat-conducting wheel shaft (11) and the fixing screw (15) for isolation.

4. The rolling contact type membrane edge heating device according to claim 1, characterized in that: The upper heat-conducting wheel assembly and the lower heat-conducting wheel assembly are respectively provided with a heat-insulating plate (19) and a padding block (20) between the infrared heating tube (18) and the upper wheel assembly mounting seat (9) and the lower wheel assembly mounting seat (6).

5. The rolling contact type membrane edge heating device according to claim 1, characterized in that: The stepping motor (1) is fixedly mounted below the adjustment base (5) via a motor base (2).

6. The rolling contact type membrane edge heating device according to claim 1, characterized in that: The wheel set spacing adjustment mechanism is also provided with a position sensor (26) for determining the initial spacing between the upper and lower wheel sets and a sensor adjustment plate (27) on the adjustment base (5).

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