A hot press roller and laminator

Abstract

The utility model relates to the field of glue spreader, disclose a hot press roller and glue spreader. It includes support seat subassembly and hot press roller subassembly, hot press roller subassembly includes quartz heating tube, composite roller and heat preservation cover, both ends of composite roller rotatory mounting are in support seat subassembly, quartz heating tube fixed mounting is in support seat subassembly, quartz heating tube inserts in composite roller and heats composite roller, heat preservation cover is fixedly connected with support seat subassembly and covers and is equipped with composite roller, and heat preservation cover and composite roller between have heat preservation cavity, install circuit board on support seat subassembly, and there is electrically connected with NTC temperature sensor on circuit board, and NTC temperature sensor is located in heat preservation cavity and is used for monitoring the temperature of composite roller outer surface. The utility model can improve the precision of measured temperature value, and the error is small, improves plastic package effect, reduces the energy consumption of quartz heating tube, and reduces the cost.

Description

Technical Field

[0001] This utility model relates to the field of gluing machine technology, and more specifically, to a hot press roller and a gluing machine. Background Technology

[0002] Laminating machines typically have two hot press rollers with internal heating elements. The ends of these rollers are rotatably mounted on a support base. The sealing film and the item to be sealed pass between the rollers, and the rollers heat and compress the film and the item to form a protective layer. Existing designs have temperature-sensing plates fitted to the ends of the hot press rollers, mounted inside the support base. However, in this design, the outer diameter of the two ends of the hot press roller is smaller than the outer diameter of the middle working area, causing the temperature-sensing plates to be closer to the heating elements inside the roller. Furthermore, the middle working area of ​​the hot press roller is exposed to air, while the temperature-sensing plates and the ends of the roller are hidden inside the support base, making heat dissipation difficult. This results in a temperature difference between the working area of ​​the hot press roller and the location of the temperature-sensing plates, causing a deviation between the actual measured values ​​and the actual values ​​of the hot press roller, thus affecting the sealing effect. Utility Model Content

[0003] To address at least one of the aforementioned problems, this utility model first provides a hot press roller, comprising a support assembly and a hot press roller assembly. Two sets of the hot press roller assembly are connected at intervals to the support assembly. Each hot press roller assembly includes a quartz heating tube, a composite roller, and a heat insulation cover. The two ends of the composite roller are rotatably mounted on the support assembly. The quartz heating tube is fixedly mounted on the support assembly and inserted into the composite roller to heat it. The heat insulation cover is fixedly connected to the support assembly and is used to cover the composite roller. A heat insulation cavity exists between the heat insulation cover and the composite roller. A circuit board is mounted on the support assembly, and an NTC temperature sensor is electrically connected to the circuit board. The NTC temperature sensor is located within the heat insulation cavity and is used to monitor the temperature of the outer surface of the composite roller.

[0004] Optionally, the bracket assembly is provided with a slot, and the circuit board is snapped into the slot.

[0005] Optionally, when the quartz heating tube begins to heat the composite roller, the circuit board and the NTC temperature sensor are adapted to first control the quartz heating tube to heat to a preset temperature at high power, and then drive the quartz heating tube to heat at low power.

[0006] Optionally, the circuit board is located outside the insulation cover, and the insulation cover has an insertion hole for the NTC temperature sensor to be inserted into the insulation cavity. The distance from the NTC temperature sensor to the outer surface of the composite roller is -0.5mm to 0mm.

[0007] Optionally, the quartz heating tube is coaxially arranged with the composite roller, and the composite roller is completely within the heating range of the quartz heating tube.

[0008] Optionally, the composite roller includes a metal roller and a silicone sleeve, wherein the metal roller is made of a thermally conductive metal material, and the silicone sleeve is fitted onto the metal roller.

[0009] Optionally, the support assembly is provided with a rotating hole, the end of the composite roller is rotatably inserted into the rotating hole, a silicone plug is tightly inserted into the rotating hole, the inner diameter of the composite roller is smaller than the outer diameter of the silicone plug, and the end of the composite roller is in close contact with the silicone plug.

[0010] Optionally, the end of the quartz heating tube protrudes from the composite roller and is inserted into the silicone plug. One end of the quartz heating tube is provided with a cable, and a through hole is provided on the silicone plug for the cable to pass through. The cable is in close contact with the wall of the through hole.

[0011] Optionally, the support assembly is provided with a drive assembly adapted to drive the two composite rollers to rotate.

[0012] Compared with the prior art, the beneficial technical effects of this utility model are as follows:

[0013] 1. The quartz heating tube is inserted into the composite roller to form an internal heating structure. The quartz material provides uniform heating and has a long lifespan, which improves the service life of the hot press roller. The NTC temperature sensor and the composite roller are located in the same heat preservation cavity and are closer to the working area of ​​the composite roller, which can improve the accuracy of the measured temperature value, reduce the error, and improve the sealing effect. In addition, the NTC temperature sensor and the circuit board work together to automatically and accurately control the temperature. When the temperature drops, it can quickly react to control the quartz heating tube to increase the temperature, making the temperature of the hot press roller more stable and accurate.

[0014] 2. The heat insulation cover reduces the heat loss from the outside of the composite roller, while the silicone plug reduces the heat loss from the inside of the composite roller, forming a double protection, reducing the energy consumption of the quartz heating tube and lowering the cost.

[0015] 3. The metal roller has good thermal conductivity, which can absorb the heat of the quartz heating tube in time and transfer the heat to the silicone sleeve, causing the silicone sleeve to heat up. The silicone sleeve is in direct contact with the plastic sealing film, and the silicone sleeve can achieve flexible contact with the plastic sealing film, which is not easy to damage the plastic sealing film and the sealed items.

[0016] 4. When the quartz heating tube is used for heating, if high power is used continuously, the system will frequently exceed the set temperature and then stop, only to restart at high power after the temperature drops, resulting in energy waste. However, with the help of the circuit board and NTC temperature sensor, the system first runs at high power to quickly provide a large amount of heat, driving the composite roller to heat up in a short time. After that, it runs at low power for more precise temperature control, smoothly compensating for heat loss and making the overall energy efficiency higher.

[0017] In addition, this utility model provides a gluing machine, including the hot press rollers as described above.

[0018] Compared with the prior art, the gluing machine described in this utility model has the same advantages as the hot press roller mentioned above, which will not be repeated here. Attached Figure Description

[0019] Figure 1 The explosion of the hot press roller in the embodiment of this utility model Figure 1 ;

[0020] Figure 2 The explosion of the hot press roller in the embodiment of this utility model Figure 2 ;

[0021] Figure 3 This is a cross-sectional view of the hot press roller in an embodiment of this utility model;

[0022] Figure 4 for Figure 3 Enlarged view of section A in the middle;

[0023] Figure 5 This is an exploded view of the driving component in an embodiment of this utility model;

[0024] Figure 6 This is a structural diagram of the second support and circuit board in an embodiment of this utility model.

[0025] Explanation of reference numerals in the attached drawings: 1. Support base assembly; 11. Circuit board; 111. NTC temperature sensor; 12. First support; 13. Second support; 131. Hook; 132. Slot; 14. Silicone plug; 15. End cap; 16. Drive assembly; 161. Drive motor; 162. Drive gear; 163. First driven gear; 164. Second driven gear; 2. Hot press roller assembly; 21. Quartz heating tube; 22. Composite roller; 23. Insulation cover; 231. Insertion hole; 24. Insulation cavity. Detailed Implementation

[0026] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the following description is provided in conjunction with the appendix. Figure 1-6 This application will be described in further detail.

[0027] The accompanying drawings of this utility model embodiment provide a coordinate system XYZ, where the positive direction of the X-axis represents the right, the negative direction of the X-axis represents the left, the positive direction of the Y-axis represents the front, the negative direction of the Y-axis represents the back, the positive direction of the Z-axis represents the top, and the negative direction of the Z-axis represents the bottom.

[0028] In a first aspect, this utility model embodiment provides a hot press roller, referring to... Figure 1 and Figure 2 The hot press roller includes a support assembly 1 and a hot press roller assembly 2. Two sets of hot press roller assemblies 2 are provided, spaced apart and connected to the support assembly 1. The plastic sealing film passes between the two sets of hot press roller assemblies 2, during which the two sets of hot press roller assemblies 2 can heat the passing plastic sealing film. A circuit board 11 is mounted on the support assembly 1, and an NTC temperature sensor 111 is electrically connected to the circuit board 11. The NTC temperature sensor 111 is located in the working area of ​​the hot press roller assembly 2 but does not interfere with the hot press roller assembly 2 or the plastic sealing film. The NTC temperature sensor 111 can measure and monitor the temperature of the outer surface of the hot press roller assembly 2. The NTC temperature sensor 111 and the hot press roller assembly 2 are located in the same space, which reduces the error of the measured temperature value, improves the accuracy of the measured temperature value, and enhances the sealing effect.

[0029] Two sets of hot press roller assemblies 2 are arranged vertically. The support assembly 1 includes a first support 12 and a second support 13. The first support 12 and the second support 13 are located at opposite ends of the axial direction of the hot press roller assembly 2 and are connected to the two sets of hot press roller assemblies 2 to form a module, which facilitates subsequent assembly onto the hot glue machine. The circuit board 11 and the NTC temperature sensor 111 are located at the bottom of the lowermost hot press roller assembly 2, thus avoiding interference with the plastic sealing film. In another embodiment, the circuit board 11 and the NTC temperature sensor 111 are located at the top of the uppermost hot press roller assembly 2; in yet another embodiment, the circuit board 11 and the NTC temperature sensor 111 are respectively located at the top of the uppermost hot press roller assembly 2 and the bottom of the lowermost hot press roller assembly 2. The two sets of hot press roller assemblies 2 have the same structure; the following description uses one set of hot press roller assembly 2 as an example.

[0030] Reference Figures 1 to 4The hot press roller assembly 2 includes a quartz heating tube 21, a composite roller 22, and a heat insulation cover 23. The two ends of the composite roller 22 are rotatably mounted on a first support 12 and a second support 13, respectively. The two ends of the quartz heating tube 21 are fixedly mounted on the first support 12 and the second support 13, respectively. The quartz heating tube 21 is an electric heating tube, inserted into the composite roller 22 to heat it. A plastic sealing film passes between the two composite rollers 22. The quartz heating tube 21 and the composite roller 22 are coaxially arranged, with both ends of the quartz heating tube 21 protruding from the composite roller 22. The composite roller 22 is completely within the heating range of the quartz heating tube 21, thus ensuring a relatively uniform temperature throughout the entire working area of ​​the composite roller 22. The heat insulation cover 23 is located between the first support 12 and the second support 13. The heat insulation cover 23 is fixedly connected to the first support 12 and the second support 13 by bolts. The heat insulation cover 23 is used to cover the composite roller 22. There is a heat insulation cavity 24 between the heat insulation cover 23 and the composite roller 22, which makes it difficult for the heat of the composite roller 22 to be dissipated and reduces the energy consumption of the quartz heating tube 21.

[0031] The composite roller 22 includes a metal roller and a silicone sleeve. The metal roller is made of thermally conductive metal, and the silicone sleeve is tightly fitted onto the metal roller. The metal roller has good thermal conductivity, enabling it to absorb heat from the quartz heating tube 21 and transfer it to the silicone sleeve, causing the silicone sleeve to heat up. The silicone sleeve is in direct contact with the plastic sealing film, and the silicone sleeve allows for flexible contact with the film, preventing damage to the film and the sealed items. During operation, the quartz heating tube 21 operates at 120-160 degrees Celsius, while the silicone sleeve, made of high-temperature resistant material, can operate normally within a temperature range of 200-300 degrees Celsius for extended periods.

[0032] Reference Figures 2 to 5The outer diameters at both ends of the metal roller are smaller than the outer diameter of the working area in the middle of the metal roller, thereby reducing the space occupied at the mating points with the first support 12 and the second support 13, resulting in a smaller overall size of the hot press roller. Both the first support 12 and the second support 13 have rotating holes at their adjacent ends for the metal roller to be inserted. Silicone plugs 14 are tightly inserted into the rotating holes on the first support 12. The inner diameter of the metal roller is smaller than the outer diameter of the silicone plug 14, and the end of the metal roller is tightly abutted against the silicone plug 14, preventing heat loss from the metal roller. A slot is provided at the end of the silicone plug 14 near the metal roller, and the end of the quartz heating tube 21 is tightly inserted into the slot. This fixes the quartz heating tube 21 to the first support 12 and the second support 13 and also seals it to prevent heat loss. The metal roller passes through the rotating hole on the second support 13 and is suspended in a cantilevered state. An end cap 15, fitted onto the metal roller, is bolted to the side of the second support 13 away from the first support 12. A silicone plug 14 is tightly inserted into the end cap 15, and the silicone plug 14 is in close contact with the end of the metal roller. The corresponding end of the quartz heating tube 21 is tightly inserted into the silicone plug 14 within the end cap 15 to form a seal, preventing heat loss. Since a cable is connected to the end of the quartz heating tube 21, a through-hole is provided on the corresponding silicone plug 14 for the cable to pass through. The cable is in close contact with the wall of the through-hole, still achieving a sealing effect.

[0033] Reference Figures 2 to 5 A drive assembly 16 is provided on the second support 13, which is adapted to drive two metal rollers to rotate synchronously. The drive assembly 16 is located on the side of the second support 13 where the end cover 15 is provided, and includes a drive motor 161, a drive gear 162, a first driven gear 163, and a second driven gear 164. The drive motor 161 is fixedly mounted on the second support 13 or on the frame of the laminating machine by bolts. In this embodiment, the drive motor 161 is preferably mounted on the frame of the laminating machine. The drive gear 162 is mounted on the motor shaft of the drive motor 161. The first driven gear 163 and the second driven gear 164 are respectively sleeved and keyed to the two metal rollers. The first driven gear 163 and the second driven gear 164 are both located on the side of the end cover 15 near the second support 13, and the first driven gear 163 and the second driven gear 164 mesh with each other. The drive gear 162 meshes with the first driven gear 163, thereby driving the motor 161 to drive the drive gear 162 to rotate, which in turn drives the two metal rollers to rotate synchronously.

[0034] In this embodiment, the insulation cover 23 is preferably a U-shaped shell, with two insulation covers 23 having vertical openings close to each other. However, the sides of the two silicone sleeves that are close to each other protrude from the corresponding insulation cover 23, thus preventing the insulation cover 23 from interfering with the plastic sealing film. The silicone sleeves and the ends of the insulation covers 23 furthest from the openings are arranged at intervals to form an insulation cavity 24. An NTC temperature sensor 111 is located inside the insulation cavity 24 to monitor the temperature of the outer surface of the silicone sleeves.

[0035] Reference Figures 2 to 6 Specifically, the circuit board 11 is located outside the insulation cover 23, so that the heat of the circuit board 11 itself is not affected by the temperature inside the insulation cavity 24, and can be effectively dissipated. The bottom of the insulation shell has an insertion hole 231 for the NTC temperature sensor 111 to be inserted into the insulation cavity 24. If there is a gap between the NTC temperature sensor and the silicone sleeve, the NTC temperature sensor will not be able to accurately sense the temperature on the silicone sleeve. Furthermore, because the silicone sleeve itself has a certain elasticity, the distance from the NTC temperature sensor 111 to the outer surface of the silicone sleeve is -0.5mm to 0mm. In this embodiment, it is preferable that the distance from the NTC temperature sensor 111 to the outer surface of the silicone sleeve is 0mm (i.e., it is in contact with the outer wall of the silicone sleeve). This allows for more accurate temperature measurements. A negative distance from the NTC temperature sensor 111 to the outer surface of the silicone sleeve indicates that the corresponding position of the silicone sleeve is concave and undergoes elastic deformation under the action of the NTC temperature sensor. The bottom of the second support 13 is integrally formed with hooks 131, two of which are symmetrically arranged along the front-to-back direction. Each hook 131 has a slot 132 on its side closest to each other, and each hook 131 has a guide slope on its bottom edge closest to each other. The circuit board 11 can first abut against the two guide slopes from the bottom of the two hooks 131, and then be pushed upwards to allow both sides of the circuit board 11 to enter the two slots 132 for a snap-fit ​​connection. During this process, the NTC temperature sensor 111 is inserted into the socket 231. It is worth noting that after the circuit board 11 is snapped into the slot 132, it fits tightly with the slot 132. Optionally, after the circuit board 11 is snapped onto the second support 13, it will be further fixed to the second support 13 with bolts.

[0036] When the quartz heating tube 21 starts heating the composite roller 22, segmented temperature control power is implemented. That is, the circuit board 11 and the NTC temperature sensor 111 are adapted to first control the quartz heating tube 21 to heat at high power to quickly provide a large amount of heat to the preset temperature, and then drive the quartz heating tube 21 to heat at low power. This results in more precise temperature control, smooth compensation for heat loss, and higher overall energy efficiency.

[0037] The implementation principle of a hot press roller according to an embodiment of this application is as follows: a quartz heating tube 21 is inserted into a composite roller 22 to form an internal heating structure. The quartz material provides uniform heating and has a long lifespan, thus improving the service life of the hot press roller. The NTC temperature sensor 111 and the composite roller 22 are located in the same space insulation cavity 24 and are closer to the working area of ​​the composite roller, which can improve the accuracy of the measured temperature value, reduce the error, and improve the sealing effect. In addition, the NTC temperature sensor 111 and the circuit board 11 work together to automatically and accurately control the temperature. After the temperature drops, it can quickly react to control the quartz heating tube 21 to increase the temperature, making the temperature of the hot press roller more stable and accurate. When the hot press roller is installed on the laminating machine, the frame of the laminating machine is equipped with a protective shell covering the circuit board 11 to prevent excessive dust accumulation on the circuit board 11 and to prevent moisture or water droplets from accumulating on the circuit board 11.

[0038] Secondly, another embodiment of the present invention provides a gluing machine, including the hot press roller described in the first aspect.

[0039] Similarly, the components included in the "components," "mechanisms," and "devices" of this disclosure can also be flexibly combined. They can be modularly produced according to actual needs and assembled as an independent module; or they can be assembled separately to form a module in this device. The division of the above-mentioned components in this disclosure is only one embodiment for ease of reading and is not intended to limit the scope of protection of this disclosure. Any technical solution that includes the above-mentioned components and has the same function should be understood as an equivalent technical solution of this disclosure.

[0040] In the description of this disclosure, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0041] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include at least one of that feature. In the description of this disclosure, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0042] In this disclosure, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.

[0043] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0044] It should be noted that when a component is referred to as "fixed to," "set on," "fixed to," or "mounted on" another component, it can be directly on the other component or there may be an intervening component. When a component is considered to be "connected to another component," it can be directly connected to the other component or there may be an intervening component. Furthermore, when a component is considered to be "fixedly connected" to another component, the connection can be detachable or non-detachable, such as through socketing, snap-fitting, integral molding, welding, etc., which are achievable in conventional technologies and will not be elaborated upon here.

[0045] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0046] The above embodiments are merely illustrative of several implementation methods of this disclosure, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the inventive concept of this disclosure, and these modifications and improvements all fall within the protection scope of this disclosure.

Claims

1. A hot press roller, characterized in that: The device includes a support assembly (1) and a hot press roller assembly (2). Two sets of hot press roller assemblies (2) are provided, with each set connected to the support assembly (1) at intervals. Each hot press roller assembly (2) includes a quartz heating tube (21), a composite roller (22), and a heat insulation cover (23). The two ends of the composite roller (22) are rotatably mounted on the support assembly (1). The quartz heating tube (21) is fixedly mounted on the support assembly (1) and inserted into the composite roller (22) to heat the composite roller. The composite roller (22) is heated. The heat insulation cover (23) is fixedly connected to the support assembly (1). The heat insulation cover (23) is used to cover the composite roller (22). There is a heat insulation cavity (24) between the heat insulation cover (23) and the composite roller (22). A circuit board (11) is installed on the support assembly (1). An NTC temperature sensor (111) is electrically connected to the circuit board (11). The NTC temperature sensor (111) is located in the heat insulation cavity (24) and is used to monitor the temperature of the outer surface of the composite roller (22).

2. The hot press roller according to claim 1, characterized in that: The bracket assembly (1) is provided with a slot (132), and the circuit board (11) is snapped into the slot (132).

3. The hot press roller according to claim 1, characterized in that: When the quartz heating tube (21) starts heating the composite roller (22), the circuit board (11) and the NTC temperature sensor (111) are adapted to first control the quartz heating tube (21) to heat to a preset temperature at high power, and then drive the quartz heating tube (21) to heat at low power.

4. The hot press roller according to claim 1, characterized in that: The circuit board (11) is located outside the heat insulation cover (23). The heat insulation cover (23) has an insertion hole (231) for inserting the NTC temperature sensor (111) into the heat insulation cavity (24). The distance from the NTC temperature sensor (111) to the outer surface of the composite roller (22) is -0.5mm to 0mm.

5. The hot press roller according to claim 1, characterized in that: The quartz heating tube (21) is coaxially arranged with the composite roller (22), and the composite roller (22) is completely located within the heating range of the quartz heating tube (21).

6. The hot press roller according to claim 1, characterized in that: The composite roller (22) includes a metal roller and a silicone sleeve. The metal roller is made of thermally conductive metal, and the silicone sleeve is fitted onto the metal roller.

7. The hot press roller according to any one of claims 1-6, characterized in that: The bracket assembly (1) is provided with a rotating hole, and the end of the composite roller (22) is rotatably inserted into the rotating hole. A silicone plug (14) is tightly inserted into the rotating hole. The inner diameter of the composite roller (22) is smaller than the outer diameter of the silicone plug (14), and the end of the composite roller (22) is in close contact with the silicone plug (14).

8. The hot press roller according to claim 7, characterized in that: The end of the quartz heating tube (21) protrudes from the composite roller (22) and is inserted into the silicone plug (14). One end of the quartz heating tube (21) is provided with a cable, and a through hole is provided on the silicone plug (14) for the cable to pass through. The cable is in close contact with the wall of the through hole.

9. The hot press roller according to claim 7, characterized in that: The support assembly (1) is provided with a drive assembly (16), which is adapted to drive the two composite rollers to rotate.

10. A gluing machine, characterized in that, Includes the hot press roller as described in any one of claims 1-9.

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