Temperature-variable palm-sealing glue drying device

Abstract

The invention discloses a temperature-variable palm-sealing glue drying device, which relates to the technical field of heat-shrinkable label processing, and comprises a mounting fixing part and a drying part, according to the air circulation design, external compressed air passes through a unique circulation path, the air volume is concentrated on a gluing part, the glue drying airflow requirement is met, meanwhile, return air circulation is achieved, and the energy utilization rate is increased. The surface of the equipment is wrapped with heat insulation materials such as polyurethane foam, heat loss is effectively reduced, and energy conservation and consumption reduction are further achieved; by reasonably distributing air quantity and air speed, moisture is timely dispersed, bubbles at the center sealing position are reduced, and the risk of label explosion and scrap during thermal shrinkage is reduced. The equipment adopts a detachable structure, is convenient to install, debug and maintain, and reduces the downtime. The thermocouple is matched with the temperature controller, the temperature of the drying area is monitored in real time and accurately regulated, and it is ensured that the drying effect is stable and consistent. And the production quality and efficiency of the heat-shrinkable labels are effectively improved, and the production cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of heat shrinkable labels, and particularly to a variable-temperature palm-closing glue drying device. Background Art

[0002] In the field of heat shrinkable label production, the continuous growth of market demand has put forward higher requirements for the performance of production equipment. In the glue drying link of the heat shrinkable label palm-closing equipment, which is the core part determining product quality and production efficiency, temperature control is crucial. Glue is extremely sensitive to temperature during the curing process. Appropriate temperature can effectively accelerate the chemical reaction rate and ensure that the glue bonds quickly and firmly. However, traditional devices lack a precise temperature adjustment mechanism and cannot stably control the temperature in the drying area within the ideal range. In high-speed production scenarios, this drawback is particularly obvious. The glue is difficult to fully react within the specified time, resulting in weak bonding at the palm-closing part of the heat shrinkable label, a significant increase in the defective rate, not only increasing production costs but also subsequent quality inspection costs, seriously affecting the economic benefits of enterprises.

[0003] At the same time, there are obvious defects in the gas circulation design of traditional devices. After external compressed air enters the device, it cannot form an efficient recycling mode. When the air flows in the device, it is difficult to effectively concentrate on the glue application part, which not only fails to meet the air flow conditions required for glue drying, hinders the normal drying process of the glue, but also causes a large amount of energy waste. In addition, the device lacks good heat insulation and heat preservation measures, resulting in serious heat loss and further reducing energy utilization efficiency, continuously increasing the operating costs of enterprises and putting them at a disadvantage in the market competition.

[0004] In summary, the deficiencies of traditional heat shrinkable label palm-closing equipment glue application devices in temperature control and gas circulation utilization can no longer meet the growing market demand. Therefore, it is urgent to develop a new type of device to solve the above problems, improve the quality and efficiency of heat shrinkable label production, and promote the development of the industry. Summary of the Invention

[0005] In view of the above technical problems, the present invention provides the following technical solutions: A variable-temperature palm-closing glue drying device, including a drying part. The drying part includes a drying upper cover plate, which is detachably arranged on the drying lower cover plate. A drying placement plate is detachably arranged on the top of the drying upper cover plate. A heating mechanism is arranged inside the drying placement plate, and the heating mechanism is placed in a drying area provided at the bottom of the drying upper cover plate. An exhaust hole is provided at the bottom of the drying area, and an air outlet is provided on the side wall of one side of the drying upper cover plate. An air inlet and a return air outlet are provided on the side wall of the other side of the drying upper cover plate. The return air outlet is connected to the air outlet through a drying air duct, and the air outlet, the air inlet, and the return air outlet are respectively communicated with the drying area to realize gas circulation.

[0006] Further, the heating mechanism includes a layout groove and mounting holes arranged on the drying storage plate. A heating wire is laid in the layout groove, and the heating wire passes through the mounting hole and is connected to a temperature controller.

[0007] Further, a temperature detection hole is provided on the upper drying cover plate. The temperature detection hole communicates with the drying area, and a thermocouple is arranged in the temperature detection hole. The thermocouple is electrically connected to the temperature controller.

[0008] Further, an upper channel groove is provided on the upper drying cover plate, and a lower channel groove is provided on the lower drying cover plate. After the upper channel groove and the lower channel groove are covered, a rectangular channel groove for material inlet and outlet is formed.

[0009] Further, the drying storage plate is detachably arranged with the upper drying cover plate through countersunk head bolts and gaskets.

[0010] Further, the surfaces of the upper drying cover plate, the drying storage plate, and the lower drying cover plate are all wrapped with heat insulation materials.

[0011] Further, the upper drying cover plate and the lower drying cover plate are detachably arranged on the installation and fixing part through bolts. The installation and fixing part includes installation and fixing columns detachably arranged with the upper drying cover plate and the lower drying cover plate. Installation and fixing guide rollers are arranged on the installation and fixing columns, and installation and fixing plates II and I are respectively arranged at both ends of the installation and fixing columns.

[0012] The beneficial effects of the present invention compared with the prior art are as follows:

[0013] 1. Improve the glue reaction efficiency and product quality; the heating mechanism and the temperature control system in the device work together to stably maintain the temperature in the drying area within an appropriate range of 25-35°C, creating the best temperature conditions for the glue reaction, greatly accelerating the chemical reaction rate of the glue, making the glue cure faster, significantly enhancing the bonding force at the label's palm joint, thereby improving the product quality and reducing the defective rate caused by poor bonding.

[0014] 2. Eliminate bubbles and reduce the scrap rate; by reasonably distributing the air volume and wind speed, on the one hand, it can timely take away the moisture generated during the glue drying process, and on the other hand, through the return air circulation, continuously provide heat for the glue drying, avoiding slow drying or uneven drying caused by moisture accumulation, thereby effectively reducing the generation of bubbles at the palm joint, and fundamentally reducing the risk of the label bursting and scrapping due to the weakening of the structural strength caused by bubbles during heat shrinkage, and greatly reducing the production cost.

[0015] 3. Achieve efficient gas circulation and energy conservation; The unique gas circulation design of this device allows external compressed air to enter from the air inlet. Part of it is discharged from the air outlet and then connected to the air return port through the drying air duct to form an air return cycle, concentrating all the air volume at the gluing part. This not only ensures the air flow conditions required for glue drying but also improves energy utilization efficiency by recycling the discharged air. At the same time, heat insulation and preservation materials such as polyurethane foam wrapped on the surface of the drying upper cover plate, drying storage plate, and drying lower cover plate effectively preserve heat, enabling the returned air to be quickly heated, further increasing the temperature of the drying area, reducing heat loss, and achieving energy conservation and consumption reduction while ensuring the drying effect.

[0016] 4. Facilitate installation and maintenance; The drying upper cover plate and drying lower cover plate are detachably arranged on the installation and fixing part through bolts. This design facilitates the installation, debugging, and subsequent maintenance of the equipment. When the equipment fails or parts need to be replaced, it can be quickly disassembled and repaired, reducing downtime and improving production efficiency. In addition, the drying storage plate is detachably arranged with the drying upper cover plate through countersunk head bolts and gaskets, facilitating the inspection and replacement of internal components such as the heating mechanism.

[0017] 5. Precise temperature control and real-time monitoring; The thermocouple arranged in the temperature detection hole is electrically connected to the temperature controller, capable of real-time monitoring of the temperature in the drying area. Once the temperature fluctuates, the thermocouple quickly transmits the temperature signal to the temperature controller. The temperature controller will compare and analyze it with the preset temperature range and timely adjust the working state of the heating wire to ensure that the temperature in the drying area is always stably within the appropriate range. This precise temperature control and real-time monitoring mechanism provide a stable and reliable environment for the glue reaction, ensuring the consistency and stability of the drying effect. Description of the Drawings

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2 It is a schematic diagram of the overall structure of the present invention from the front view angle.

[0020] Figure 3 It is a schematic diagram of a partial structure of the installation and fixing part of the present invention.

[0021] Figure 4 It is a schematic diagram of a partial structure of the drying part of the present invention Figure 1 .

[0022] Figure 5 It is a schematic diagram of a partial structure of the drying part of the present invention Figure 2 .

[0023] Figure 6 It is a schematic diagram of a partial structure of the drying part of the present invention Figure 3 .

[0024] Figure 7 Schematic diagram of the local structure of the dryer of the present invention Figure 4 .

[0025] Reference numerals: 1 - Installation and fixing part; 2 - Dryer; 101 - First installation and fixing plate; 102 - Installation and fixing guide roller; 103 - Installation and fixing column; 104 - Second installation and fixing plate; 201 - Upper drying cover; 202 - Drying placement plate; 203 - Lower drying cover; 204 - Drying air duct; 20 - Air outlet; 21 - Upper channel groove; 22 - Air inlet; 23 - Air return port; 24 - Temperature detection hole; 25 - Installation hole; 26 - Arrangement groove; 27 - Lower channel groove; 28 - Exhaust hole. Specific embodiments

[0026] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0027] As Figure 1 shown, a variable-temperature palm glue drying device includes an installation and fixing part 1 and a dryer 2.

[0028] As Figures 1 to 7 shown, the dryer 2 includes an upper drying cover 201, a drying placement plate 202, a lower drying cover 203, and a drying air duct 204; the upper drying cover 201 is detachably arranged on the lower drying cover 203 through bolts, a drying placement plate 202 is detachably arranged on the top of the upper drying cover 201, a heating mechanism is arranged inside the drying placement plate 202, the heating mechanism is placed in the drying area arranged at the bottom of the upper drying cover 201, the width of the drying area is 200 mm, an exhaust hole 28 is arranged at the bottom of the drying area, the shape of the exhaust hole 28 is rectangular, an air outlet 20 is arranged on the side wall of one side of the upper drying cover 201, an air inlet 22 and an air return port 23 are arranged on the side wall of the other side of the upper drying cover 201, the air return port 23 is connected to the air outlet 20 through the drying air duct 204, and the air inlet 22 is connected to external compressed air; the air outlet 20, the air inlet 22, and the air return port 23 are respectively communicated with the drying area to realize gas circulation. Specifically, external compressed air enters the device through the reserved air inlet 22 on the upper drying cover 201, the air flows inside the device, after passing through the drying area, a part of the air will be discharged from the air outlet 20 on the upper drying cover 201, and is connected to the air return port 23 through the drying air duct 204 to form a return air cycle, so that the discharged air returns to the device again, and all the air volume is concentrated at the glue application part.

[0029] As Figures 1 to 7As shown in the figure, the heating mechanism includes a layout groove 26 and a mounting hole 25 arranged on the drying placement plate 202. A heating wire is laid in the layout groove 26 and passes through the mounting hole 25 to be connected to a temperature controller, and the temperature controller is arranged on the drying placement plate 202; a temperature detection hole 24 is arranged on the drying upper cover plate 201, and the temperature detection hole 24 communicates with the drying area. A thermocouple is arranged in the temperature detection hole 24, and the thermocouple is electrically connected to the temperature controller; the thermocouple is responsible for monitoring the real-time temperature of the drying area. Once the temperature fluctuates, the thermocouple will quickly transmit the collected temperature signal to the temperature controller on the upper part of the drying placement plate 202. After receiving the signal, the temperature controller will compare and analyze it with the preset temperature range of 25 - 35 °C. If the actual temperature is lower than the lower limit, the temperature controller will issue an instruction to make the heating wire start working to increase the temperature of the drying area; if the actual temperature is higher than the upper limit, the temperature controller will control the heating wire to reduce the power or stop heating, so as to ensure that the temperature in the drying area is stably within a suitable range and create the best temperature conditions for the glue reaction.

[0030] As Figures 1 to 7 shown in the figure, an upper channel groove 21 is arranged on the drying upper cover plate 201, and a lower channel groove 27 is arranged on the drying lower cover plate 203. After the upper channel groove 21 and the lower channel groove 27 are covered, a rectangular channel groove for material entry and exit is formed; the drying placement plate 202 is detachably arranged with the drying upper cover plate 201 through countersunk bolts and gaskets; the surfaces of the drying upper cover plate 201, the drying placement plate 202, and the drying lower cover plate 203 are all wrapped with heat-insulating and heat-preserving materials such as polyurethane foam. Since the surfaces of the drying upper cover plate 201, the drying placement plate 202, and the drying lower cover plate 203 are all wrapped with heat-insulating and heat-preserving materials such as polyurethane foam, the heat can be effectively preserved, and the recycled air can be quickly heated during the circulation process, further increasing the temperature in the drying area, reducing heat loss, and improving energy utilization efficiency.

[0031] As Figures 1 to 7 shown in the figure, the drying upper cover plate 201 and the drying lower cover plate 203 are detachably arranged on the installation and fixing part 1 through bolts. The installation and fixing part 1 includes installation and fixing columns 103 that are detachably arranged with the drying upper cover plate 201 and the drying lower cover plate 203. Installation and fixing guide rollers 102 are arranged on the installation and fixing columns 103, and installation and fixing plates two 104 and installation and fixing plates one 101 are respectively arranged at both ends of the installation and fixing columns 103.

[0032] As Figures 1 to 7As shown in the figure, the working principle of a variable-temperature palm-closing glue drying device disclosed by the present invention is as follows: The drying upper cover plate 201 and the drying lower cover plate 203 are installed on the installation fixing column 103 by bolts, and the second installation fixing plate 104 and the first installation fixing plate 101 are fixed at predetermined positions. The air inlet 22 is connected to external compressed air. The installation fixing guide roller 102 is evenly coated with glue. After the material comes into contact with the installation fixing guide roller 102, the palm-closing process is carried out. The external compressed air enters the device interior from the air inlet 22 reserved on the drying upper cover plate 201. The air flows inside the device. After passing through the drying area, a part of the air will be discharged from the air outlet 20 on the drying upper cover plate 201 into the drying air duct 204. The air enters the air return port 23 through the drying air duct 204, forming an air return cycle, so that the discharged air returns to the device again, and all the air volume is discharged from the exhaust holes 28 and concentrated at the glue application part.

[0033] A thermocouple is arranged in the temperature detection hole 24, and the thermocouple is electrically connected to the temperature controller; the thermocouple is responsible for monitoring the real-time temperature of the drying area. Once the temperature fluctuates, the thermocouple will quickly transmit the collected temperature signal to the temperature controller on the upper part of the drying object placement plate 202. After receiving the signal, the temperature controller will compare and analyze it with the preset temperature range of 25 - 35 °C. If the actual temperature is lower than the lower limit, the temperature controller will issue an instruction to make the heating wire start working to increase the temperature of the drying area; if the actual temperature is higher than the upper limit, the temperature controller will control the heating wire to reduce the power or stop heating, so as to ensure that the temperature of the drying area is stabilized within a suitable range and create the best temperature conditions for the glue reaction.

[0034] Under the combined action of temperature and air flow, the glue at the palm-closing part dries faster. The appropriate temperature can accelerate the chemical reaction rate of the glue, make the glue cure faster, and enhance the bonding force at the palm-closing part of the label. The reasonably distributed air volume and air speed can, on the one hand, timely remove the moisture generated during the drying process of the glue, and on the other hand, through the air return cycle, continuously provide heat for the glue drying, avoiding problems such as slow drying or uneven drying caused by moisture accumulation, effectively solving the problem of low bonding strength caused by low glue reaction efficiency after the thermal shrinkage label is coated and palm-closed, and reducing product scrapping.

Claims

1. A variable-temperature palm-closing glue drying device, characterized in that: It includes a drying section (2), and the drying section (2) includes a drying upper cover plate (201). The drying upper cover plate (201) is detachably arranged on the drying lower cover plate (203). A drying storage plate (202) is detachably arranged on the top of the drying upper cover plate (201). A heating mechanism is arranged in the drying storage plate (202). The heating mechanism is placed in a drying area arranged at the bottom of the drying upper cover plate (201). An exhaust hole (28) is arranged at the bottom of the drying area. An air outlet (20) is arranged on the side wall of one side of the drying upper cover plate (201). An air inlet (22) and an air return opening (23) are arranged on the side wall of the other side of the drying upper cover plate (201). The air return opening (23) is connected to the air outlet (20) through a drying air duct (204). The air outlet (20), the air inlet (22), and the air return opening (23) are respectively communicated with the drying area to realize gas circulation.

2. The variable-temperature palm-closing glue drying device according to claim 1, characterized in that: The heating mechanism includes an arrangement groove (26) and an installation hole (25) arranged on the drying storage plate (202). A heating wire is laid in the arrangement groove (26), and the heating wire passes through the installation hole (25) and is connected to a temperature controller.

3. A variable-temperature palm-closing glue drying device according to claim 1, characterized in that: A temperature detection hole (24) is arranged on the drying upper cover plate (201). The temperature detection hole (24) is communicated with the drying area. A thermocouple is arranged in the temperature detection hole (24), and the thermocouple is electrically connected to the temperature controller.

4. A variable-temperature palm-closing glue drying device according to claim 1, characterized in that: An upper channel groove (21) is arranged on the drying upper cover plate (201), and a lower channel groove (27) is arranged on the drying lower cover plate (203). After the upper channel groove (21) and the lower channel groove (27) are covered, a rectangular channel groove for material entry and exit is formed.

5. The variable-temperature palm-closing glue drying device according to claim 1, wherein: The drying storage plate (202) is detachably arranged on the drying upper cover plate (201) through countersunk bolts and gaskets.

6. The variable-temperature palm-closing glue drying device according to claim 1, wherein: The surfaces of the drying upper cover plate (201), the drying storage plate (202), and the drying lower cover plate (203) are all wrapped with heat-insulating materials.

7. A variable-temperature palm-closing glue drying device according to any one of claims 1 to 6, characterized in that: The drying upper cover plate (201) and the drying lower cover plate (203) are detachably arranged on the installation and fixing part (1) through bolts. The installation and fixing part (1) includes installation and fixing columns (103) detachably arranged with the drying upper cover plate (201) and the drying lower cover plate (203). Installation and fixing guide rollers (102) are arranged on the installation and fixing columns (103). Installation fixing plates two (104) and installation fixing plates one (101) are respectively arranged at the two ends of the installation and fixing columns (103).

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