An on-line glue melting mechanism of a coating film machine

Abstract

The utility model provides a kind of film coating machine online glue melting mechanism, comprising: box, rotation is installed on the glue melting platform;Heat conduction system is set on the box, for melting glue block and conveying glue melting to glue roller;Glue block groove is installed on the box, for placing the glue block, the included angle between the glue block groove and the heat conduction system is adjustable.The utility model heat conduction system can bring more efficient and uniform heating by the online glue melting mode of conveyable, conveying speed can be adjusted according to demand, to control glue melting speed and glue melting amount;At the same time, screen curtain continuous movement and compacting device synergistic effect, ensure that glue block and hot surface are fully contacted, and the contact area of glue block groove and hot surface is adjustable, so that glue melting amount and glue melting speed are controllable, break through the glue melting capacity limit of traditional double hot roller system.In addition, heat conduction system grading heating design can avoid local overheating or thermal stress concentration, improve glue melting efficiency and glue melting uniformity.

Description

Technical Field

[0001] This utility model relates to the field of coating machine technology, specifically to an online adhesive melting mechanism for a coating machine. Background Technology

[0002] The production of composite adhesive films involves uniformly coating molten resin at a specific temperature onto release paper or other carriers. The resin temperature significantly affects its viscosity, severely impacting coating quality; therefore, maintaining the resin temperature during operation is crucial. The common practice is to heat the resin, stored at low temperatures, to a set temperature in an oven, then pour it tray by tray into a coating machine for coating production. This method is extremely labor-intensive.

[0003] Therefore, some online melting systems have appeared on the market. For example, Chinese patent publication number CN210585683U discloses an online melting device that uses a dual-hot roller online melting system. However, it has disadvantages such as limited melting capacity and uncontrollable melting amount and melting speed. Utility Model Content

[0004] The purpose of this invention is to overcome the defects of the prior art and provide an online glue melting mechanism for a coating machine, which can solve the problems of limited glue melting capacity, uncontrollable glue melting amount and melting speed in the prior art.

[0005] To achieve the above and other objectives, this utility model is implemented through the following technical solution: This utility model proposes an online glue melting mechanism for a coating machine, comprising: a housing, rotatably mounted on a glue melting platform; a heat conduction system, disposed on the housing, for melting glue blocks and conveying melted glue to a coating roller; and a glue block trough, mounted on the housing, for placing the glue blocks.

[0006] In one embodiment, the coating roller includes a forward coating roller and a reverse coating roller, and the position of the drive roller of the heat transfer system relative to the forward coating roller and the reverse coating roller is adjustable.

[0007] In one embodiment, the housing is rotatably mounted on the melting platform via a slewing bearing and a cantilever bracket, allowing the housing to rotate to the outside of the melting platform for quick replacement of the heat transfer system's mesh curtain. A first actuator is provided between the housing and the melting platform, which drives the housing to rotate around the slewing bearing, thereby causing the melting mechanism as a whole to rotate relative to the melting platform to adjust the position of the drive roller relative to the forward coating roller and the reverse coating roller.

[0008] In one embodiment, the heat conduction system includes a preheating roller, a drive roller, a hot plate, a mesh curtain, and a drive device; the hot plate is disposed between the preheating roller and the drive roller, the mesh curtain covers the preheating roller, the hot plate, and the drive roller, the drive device is connected to the preheating roller and the drive roller respectively, and the drive device drives the drive roller and the preheating roller to rotate, thereby moving the mesh curtain; the preheating roller is used to preheat the mesh curtain, and the hot plate is used to heat the preheated mesh curtain.

[0009] In one embodiment, the dispensing mechanism further includes a liquid level sensor, which is communicatively connected to the drive motor of the drive device. The liquid level sensor is used to monitor the glue level at the dispensing roller in real time and transmit a signal to the drive motor. The drive motor adjusts its rotation speed according to the glue level to adjust the glue supply speed in real time.

[0010] In one embodiment, the heat conduction system further includes a tension roller and an adjustment device. The tension roller, the preheating roller, and the drive roller form a triangular transmission structure, and the mesh curtain transmission covers the tension roller, the preheating roller, and the drive roller. The adjustment device includes a mesh curtain misalignment sensor and a second actuator. The mesh curtain misalignment sensor is disposed on the side end face of the housing and is used to detect the position of the mesh curtain on the tension roller in real time. The fixed end of the second actuator is disposed on the melting platform, and the movable end is connected to the tension roller. It is used to push the tension roller to move back and forth to adjust the position of the mesh curtain according to the detection result of the mesh curtain misalignment sensor.

[0011] In one embodiment, the driving device includes a drive motor, a drive sprocket assembly, and a transmission chain. The drive sprocket assembly is disposed on one end face of the housing and is fixedly connected to the shafts of the drive roller and the preheating roller, respectively. The drive wheel of the drive sprocket assembly is sequentially connected to each driven wheel and a torque limiter via the transmission chain. The drive motor is disposed on the other end face of the housing, and its output shaft is connected to the drive wheel. The drive motor drives the preheating roller and the drive roller to rotate by driving the drive wheel and the transmission chain, thereby driving the mesh curtain to move.

[0012] In one embodiment, a tensioning actuator connected to the transmission chain is provided on the other end face of the housing, and the tensioning actuator is used to tension the transmission chain.

[0013] In one embodiment, a pressing device is provided on the adhesive block groove to press the adhesive block onto the mesh curtain.

[0014] In one embodiment, the clamping device includes a fixed plate, a guide rod, a push plate, and a third actuator; the fixed plate is fixed on the rubber block groove, and the guide rod is slidably mounted on the fixed plate via a linear bearing; the push plate is fixed to one end of the guide rod and arranged between the fixed plate and the rubber block; the third actuator is fixed on the fixed plate, and its movable end is connected to the push plate.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. This utility model's heat conduction system, by setting up a mesh curtain, achieves an online melting method that can be conveyed, resulting in more efficient and uniform heating. The conveying speed of the mesh curtain can be adjusted according to requirements, thereby controlling the melting speed and amount of adhesive. At the same time, the heat conduction system can adjust its angle along with the box body, realizing dynamic adjustment of the distance between the drive roller and the forward / reverse coating roller, meeting diverse coating process requirements. In particular, it can rotate forward to the outside of the melting platform to facilitate quick replacement of the mesh curtain. 2. The continuous movement of the mesh curtain and the pressing device of this utility model work together to ensure that the rubber block is in full contact with the hot surface, breaking through the melting capacity limitation of the traditional double hot roller system; 3. This utility model achieves gradient heating and melting of the glue block through a graded heating design of the heat conduction system (preheating roller preheating screen + hot plate secondary heating), avoiding local overheating or thermal stress concentration, and improving the melting efficiency and melting uniformity. 4. This utility model combines the dual protection of a torque limiter and a tensioning actuator, which reduces the fluctuation range of the glue supply speed and significantly improves the glue melting capacity. 5. The linkage between the liquid level sensor and the drive motor of this utility model can monitor the glue level of the coating roller in real time and provide feedback to adjust the moving speed of the screen curtain, automatically adjust the glue supply speed, and realize the dynamic matching of glue supply and coating requirements. 6. The self-correcting system for screen curtain misalignment of this utility model (sensor + second actuator + tension roller linkage) can automatically correct the misalignment of the screen curtain, improve the transmission stability and service life of the screen curtain; 7. The pressing device of this utility model can ensure that the rubber blocks are in close contact and prevent slippage. Attached Figure Description

[0016] Figure 1 The diagram shown is a three-dimensional structural schematic of an online adhesive melting mechanism for a coating machine according to this utility model.

[0017] Figure 2 The diagram shown is a side view of the online adhesive melting mechanism of a coating machine according to this utility model.

[0018] In the diagram: 100, Melting mechanism; 110, Housing; 120, Heat transfer system; 121, Preheating roller; 122, Drive roller; 123, Tensioning roller; 124, Hot plate; 125, Net curtain; 1261, Drive motor; 1262, Drive wheel; 1263, Driven wheel; 1264, Torque limiter; 1265, Tensioning actuator; 127, Net curtain misalignment sensor; 128, Second actuator; 129, Scraper; 130, Liquid level sensor; 140, Adhesive block trough; 151, Fixing plate; 152, Guide rod; 153, Push plate; 154, Third actuator; 155, Linear bearing; 200, Melting platform; 210, Cantilever bracket; 220, Slewing bearing; 230, First actuator; 300, Applying roller; A, Adhesive block. Detailed Implementation

[0019] Please see Figures 1-2 The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0020] It should be noted that the structures, proportions, sizes, etc., illustrated in the accompanying drawings of this specification are only used to complement the content disclosed in the specification for those skilled in the art to understand and read, and are not intended to limit the conditions under which this utility model can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportional relationships, or adjustments to the size, without affecting the effects and purposes that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0021] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention pertains. The terms “a,” “an,” or “the,” as used herein, do not indicate a limitation of quantity, but merely indicate the presence of at least one. Terms such as “comprising” or “including” mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. The numbering of components in this specification, such as “first,” “second,” etc., is solely for distinguishing the described objects and has no sequential or technical meaning. The term “connection,” unless otherwise specified, includes both direct and indirect connections.

[0022] To avoid confusion with this utility model, some technical features known in the art have not been described.

[0023] like Figure 1 and Figure 2As shown, this embodiment provides an online adhesive melting mechanism for a coating machine, including a housing 110, which is rotatably mounted on a melting platform 200 via a cantilever bracket 210. The housing 110 can be rotated to the outside of the melting platform 200 to enable quick replacement of the screen 125; a heat conduction system 120, which is disposed on the housing 110, is used to melt adhesive block A and convey the melted adhesive to the coating roller 300; and an adhesive block trough 140, which is mounted on the housing 110, is used to place adhesive block A.

[0024] Specifically, the melting platform 200 is provided with mounting holes, a cantilever bracket 210, and a first actuator 230. The mounting holes are used to mount the melting mechanism 100, so that part of the melting mechanism 100 is located above the melting platform 200, and the other part is located below the melting platform 200. The cantilever bracket 210 is fixed to the upper end surface of the melting platform 200 and is set close to the mounting holes. A slewing bearing 220 is mounted on it for rotating the melting mechanism 100. The first actuator 230 can be an electric push rod, with its fixed end fixed to the upper end surface of the melting platform 200 and set close to the mounting holes; its movable end is connected to the housing 110 and is used to push the housing 110 to rotate around the slewing bearing 220, thereby causing the melting mechanism 100 to rotate relative to the melting platform 200 to adjust the glue application of the melting mechanism 100 onto the forward or reverse coating roller to meet the needs of forward or reverse coating. When the mesh curtain 125 is damaged, the first actuator 230 can rotate the entire melting mechanism 100 to the upper position of the melting platform 200 to achieve quick replacement of the mesh curtain 125.

[0025] The heat transfer system 120 includes a preheating roller 121, a drive roller 122, a tensioning roller 123, a hot plate 124, a mesh curtain 125, and a drive device. The side projection of the housing 110 can be triangular, with the preheating roller 121, the drive roller 122, and the tensioning roller 123 respectively arranged at its three corners. The preheating roller 121 and the tensioning roller 123 are both arranged above the melting platform 200, with the preheating roller 121 located at the top. The drive roller 122 is arranged below the melting platform 200 and above the coating roller 300. A hot plate 124 is also provided between the preheating roller 121 and the drive roller 122. A mesh curtain 125 covers the preheating roller 121, the hot plate 124, the drive roller 122, and the tension roller 123. The drive roller 122 is used to drive the movement of the mesh curtain 125, the preheating roller 121 is used to preheat the mesh curtain 125, and the hot plate 124 is used to heat the mesh curtain 125 between the preheating roller 121 and the drive roller 122. The drive device is connected to the preheating roller 121 and the drive roller 122 and is used to drive the rotation of the preheating roller 121 and the drive roller 122 to drive the movement of the mesh curtain 125. The mesh curtain 125 is heated by the preheating roller 121 and the hot plate 124 to melt the glue block A, and the molten glue is carried to the coating roller 300 by the movement of the mesh curtain 125. When the molten glue passes the scraper 129 below the drive roller 122, it is scraped off onto the coating roller 300.

[0026] Specifically, the drive unit is located on the side end face of the housing 110 and is connected to the preheating roller 121 and the drive roller 122. Specifically, the driving device may include a drive motor 1261, a drive sprocket assembly, and a transmission chain. The drive sprocket assembly is located on the side end face near the cantilever bracket 210. The drive sprocket assembly includes a drive wheel 1262, at least one driven wheel 1263, and a torque limiter 1264. The drive wheel 1262 is sequentially connected to each driven wheel 1263 and the torque limiter 1264 via the transmission chain. The shaft of the drive roller 122 is fixedly connected to one driven wheel 1263, and the torque limiter 1264 is fixedly connected to the shaft of the preheating roller 121. The drive motor 1261 is located on the side end face away from the cantilever bracket 210, and its output shaft is connected to the drive wheel 1262. The drive motor 1261 drives the preheating roller 121 and the drive roller 122 to rotate by driving the drive wheel 1262 and the transmission chain, thereby driving the net curtain 125 to move downward. During the movement of the mesh curtain 125, the drive roller 122 provides the main traction power, and the transmission chain drives the preheating roller 121 through the torque limiter 1264, so that the preheating roller 121 rotates with a certain torque to assist the transmission and keep the mesh curtain 125 between the drive roller 122 and the preheating roller 121 taut.

[0027] Furthermore, in order to control the transmission chain to remain tensioned, a tensioning actuator 1265, such as a cylinder, can be added to the side end face of the housing 110 away from the cantilever bracket 210 and connected to the transmission chain.

[0028] Furthermore, a liquid level sensor 130 can be installed diagonally above the coating roller 300. The extension line connecting the liquid level sensor 130 and the doctor blade 129 can pass through the highest liquid level of the coating roller 300. The liquid level sensor 130 is used to monitor the glue level at the coating roller 300 in real time and transmit a signal to the drive motor 1261. The drive motor 1261 can adjust its rotation speed according to the glue level to adjust the glue supply speed in real time.

[0029] Furthermore, the heat conduction system 120 also includes an adjustment device connected to the tension roller 123. This device is used to detect the position of the net curtain 125 in real time and, when the net curtain 125 deviates from its designated position, pushes the tension roller 123 to move back and forth to adjust the position of the net curtain 125. The adjustment device includes a net curtain deviation sensor 127 and a second actuator 128. The net curtain deviation sensor 127 is located on the side end face of the housing 110, directly opposite the tension roller 123, and is used to detect the position of the tension roller 123 on the net curtain 125 in real time. The second actuator 128 can be an electric push rod, with its fixed end located on the melting platform 200 and its movable end connected to the tension roller 123. When the net curtain deviation sensor 127 detects that the net curtain 125 has deviated from its designated position, the second actuator 128 receives an adjustment signal and pushes the tension roller 123 to move back and forth to adjust the position of the net curtain 125 and correct its deviation.

[0030] A glue block trough 140 is installed on the housing 110 and positioned above the hot plate 124 to hold glue block A. A pressing device is provided on the glue block trough 140 to press glue block A firmly onto the mesh curtain 125. The pressing device includes a fixed plate 151, a guide rod 152, a push plate 153, and a third actuator 154. The fixed plate 151 is fixed to the glue block trough 140, and the guide rod 152 is slidably mounted on the fixed plate 151 via a linear bearing 155. The push plate 153 is fixed to one end of the guide rod 152 and positioned between the fixed plate 151 and the glue block A. The third actuator 154 is fixed to the fixed plate 151, and its movable end is connected to the push plate 153. As the glue melts, the thickness of glue block A decreases, and the third actuator 154 drives the push plate 153 and the guide rod 152 to move along the linear bearing 155 toward the glue block A to maintain the pressure on the glue block A.

[0031] Therefore, this utility model effectively overcomes the various shortcomings of the prior art and has high industrial application value. The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit this utility model. Any person skilled in the art can modify or change the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or changes made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. An online adhesive melting mechanism for a coating machine, characterized in that, include: The housing is rotatably mounted on the melting platform via a cantilever bracket; A heat conduction system, installed on the housing, is used to melt the adhesive block and transfer the molten adhesive to the coating roller; A glue block slot, installed on the box body, is used to hold the glue blocks; The housing can be rotated to the outside of the melting platform to enable quick replacement of the mesh curtain of the heat conduction system.

2. The online melting mechanism of the coating machine according to claim 1, characterized in that, The coating roller includes a forward coating roller and a reverse coating roller, and the position of the drive roller of the heat conduction system relative to the forward coating roller and the reverse coating roller is adjustable.

3. The online melting mechanism for the coating machine according to claim 2, characterized in that, The housing is rotatably connected to the cantilever bracket via a slewing bearing; a first actuator is provided between the housing and the melting platform, the first actuator pushes the housing to rotate around the slewing bearing, thereby causing the melting mechanism as a whole to rotate relative to the melting platform to adjust the position of the drive roller relative to the forward coating roller and the reverse coating roller.

4. The online melting mechanism of the coating machine according to claim 1, characterized in that, The heat conduction system includes a preheating roller, a drive roller, a hot plate, a mesh curtain, and a drive device. The hot plate is disposed between the preheating roller and the drive roller. The mesh curtain covers the preheating roller, the hot plate, and the drive roller. The drive device is connected to the preheating roller and the drive roller respectively. The drive device drives the drive roller and the preheating roller to rotate, thereby moving the mesh curtain. The preheating roller is used to preheat the mesh curtain, and the hot plate is used to heat the preheated mesh curtain.

5. The online melting mechanism for the coating machine according to claim 4, characterized in that, It also includes a liquid level sensor, which is communicatively connected to the drive motor of the drive device. The liquid level sensor is used to monitor the glue level at the glue roller in real time and transmit a signal to the drive motor. The drive motor adjusts its rotation speed according to the glue level to adjust the glue supply speed in real time.

6. The online melting mechanism for the coating machine according to claim 4, characterized in that, The heat transfer system also includes a tension roller and an adjustment device. The tension roller, preheating roller, and drive roller form a triangular transmission structure, and the mesh curtain transmission covers the tension roller, preheating roller, and drive roller. The adjustment device includes a mesh curtain misalignment sensor and a second actuator. The mesh curtain misalignment sensor is disposed on the side end face of the housing and is used to detect the position of the mesh curtain on the tension roller in real time. The fixed end of the second actuator is disposed on the melting platform, and the movable end is connected to the tension roller. It is used to push the tension roller to move back and forth to adjust the position of the mesh curtain according to the detection result of the mesh curtain misalignment sensor.

7. The online melting mechanism for the coating machine according to claim 4, characterized in that, The driving device includes a drive motor, a drive sprocket assembly, and a transmission chain. The drive sprocket assembly is disposed on one end face of the housing and is fixedly connected to the shafts of the drive roller and the preheating roller, respectively. The drive wheel of the drive sprocket assembly is sequentially connected to each driven wheel and a torque limiter via the transmission chain. The drive motor is disposed on the other end face of the housing, and its output shaft is connected to the drive wheel. The drive motor drives the preheating roller and the drive roller to rotate by driving the drive wheel and the transmission chain, thereby driving the mesh curtain to move.

8. The online melting mechanism for a coating machine according to claim 7, characterized in that, A tensioning actuator connected to the transmission chain is provided on the other end face of the housing, and the tensioning actuator is used to tension the transmission chain.

9. The online melting mechanism for a coating machine according to claim 1, characterized in that, A pressing device is provided on the adhesive block groove to press the adhesive block firmly onto the mesh curtain.

10. The online melting mechanism for a coating machine according to claim 9, characterized in that, The clamping device includes a fixed plate, a guide rod, a push plate, and a third actuator; the fixed plate is fixed on the rubber block groove, and the guide rod is slidably mounted on the fixed plate via a linear bearing; The push plate is fixed to one end of the guide rod and arranged between the fixed plate and the rubber block; the third actuator is fixed to the fixed plate and its movable end is connected to the push plate.

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