A small hot melt glue machine

Abstract

This utility model discloses a small hot melt glue machine, including a separate glue storage and heating mechanism and a temperature control mechanism. The glue storage and heating mechanism includes a shell and a heating module and a glue storage module disposed within the shell. The heating module is electrically connected to the temperature control mechanism. The glue storage module includes a glue pot whose bottom contacts the heating module and a glue pot lid that covers the glue pot. Bakelite board is used to fill the space between the glue pot and the shell, and between the heating module and the shell. This utility model is specifically designed for the glue repair process in shoe manufacturing production lines. It can be placed next to the production line to provide workers with immediate, stable, and appropriate amounts of molten hot melt glue. Workers no longer need to repeat the tedious and time-consuming process of "dipping - extending to the heat source - heating - applying." They can simply take the glue directly from the machine for repair, making the operation simple and quick. This greatly simplifies the glue repair operation, shortens the time for each repair, and ensures the smooth operation of the production line.

Description

Technical Field

[0001] This utility model relates to the field of shoe manufacturing equipment technology, specifically to a small hot melt adhesive machine applied to a shoe manufacturing production line for providing workers with molten hot melt adhesive. Background Technology

[0002] In the shoe manufacturing process, after the upper and the sole (or "insole") are initially bonded, the bonding quality at the joint needs to be inspected to ensure a strong and flawless bond. During this process, if any areas are found to be lacking glue, production line workers must manually apply additional glue to correct the bonding defects and ensure the quality of the finished shoe.

[0003] Currently, the manual glue application process is as follows: production line workers first use a wooden stick to dip into a small amount of solid hot melt adhesive, then extend the part dipped in hot melt adhesive to the pre-set hot air outlet of the hot air blower next to the production line. The high-temperature airflow generated by the hot air blower heats the solid hot melt adhesive, melting it into a liquid state. Finally, the molten adhesive is applied or filled into the missing glue area between the upper and the sole.

[0004] The existing operating methods described above have many obvious flaws: Firstly, it is inefficient, affecting the production line's cycle time. Each time adhesive is applied, production line workers must repeat the "dipping-heating-applying" process. Heating and melting takes time, and the amount of adhesive that can be applied at one time is limited. This process is cumbersome and time-consuming, severely restricting the overall operating efficiency of the production line and failing to meet the demands of modern, high-efficiency production. Secondly, the operation is inconvenient, and the labor intensity for production line workers is high. Production line workers need to hold a wooden stick and aim it at the hot air source for a long time. The posture is fixed and unnatural, and they are prone to fatigue. Thirdly, the energy utilization is not dedicated to its intended purpose, posing safety hazards. The hot air blowers installed next to the production line are typically designed to remove the spiderweb-like or filamentous adhesive residue left after the upper and sole are glued together. Workers need to bring the soles close to the hot air blower to melt and adhere them. Using this equipment to melt hot melt adhesive is not a dedicated function, resulting in low heating efficiency and uneconomical energy consumption. Furthermore, prolonged exposure of workers to the high-temperature hot air source in the work area also poses certain safety risks such as burns. Fourthly, the state of the adhesive compound is uncontrollable, affecting the bonding quality. Relying on non-contact heating with hot air is greatly affected by environmental factors, making it difficult to ensure that the adhesive compound is heated to the optimal melt viscosity and temperature uniformly and stably each time. There is a risk of uneven heating or overheating leading to carbonization of the adhesive compound, which ultimately affects the bonding quality of the repair area.

[0005] Therefore, there is an urgent need in this field for an automated device that can be integrated into the footwear production line and is specifically designed to provide workers with instant, stable, and appropriate amounts of molten hot melt adhesive, in order to solve the shortcomings of the existing technology and achieve standardization, efficiency, and safety in the adhesive application process. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model aims to provide a small hot melt adhesive machine that can provide workers with instant, stable, and appropriate amounts of molten hot melt adhesive, thereby achieving standardization, efficiency, and safety in the adhesive application process.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a small hot melt glue machine, comprising a glue storage and heating mechanism and a temperature control mechanism separately arranged; the glue storage and heating mechanism includes a shell and a heating module and a glue storage module disposed in the shell, the heating module being electrically connected to the temperature control mechanism, and the glue storage module including a glue pot whose bottom contacts the heating module and a glue pot lid covering the glue pot; The space between the glue pot and the outer shell, and the space between the heating module and the outer shell, are filled with bakelite board.

[0008] As a limitation of this utility model, the heating module includes a heat-conducting block and a plurality of heating rods passing through the heat-conducting block.

[0009] As a further limitation of this utility model, the heat-conducting block is an aluminum block with legs, which is disposed at the bottom of the outer casing.

[0010] As another limitation of this utility model, the temperature control mechanism includes an electrical box and a solid-state relay and a temperature controller disposed in the electrical box; the solid-state relay is electrically connected between the heating module and the power supply, and the temperature controller is electrically connected to the solid-state relay; It also includes a temperature sensor disposed inside the outer casing for monitoring the temperature of the glue pot, the temperature sensor being electrically connected to the temperature controller.

[0011] As a further limitation of this utility model, the temperature control mechanism also includes a circuit breaker disposed in the electrical box, the circuit breaker being electrically connected between the solid-state relay and the power supply.

[0012] By adopting the above-mentioned technical solution, the beneficial effects achieved by this utility model compared with the prior art are as follows: (1) Specialized design greatly improves production efficiency and reduces labor intensity. This utility model is specifically designed for the glue application process in shoe production lines. It can be placed next to the production line and can provide production line workers with immediate, stable, and appropriate amounts of molten hot melt adhesive. Production line workers no longer need to repeat the tedious and time-consuming process of "dipping - extending to the heat source - heating - applying". They can simply take the adhesive directly from this equipment for glue application, making the operation simple and quick. This greatly simplifies the glue application operation, shortens the glue application time per application, ensures the smoothness of the production line rhythm, and frees workers from high-intensity, fatigue-prone fixed-posture operations, effectively reducing their labor intensity.

[0013] (2) This utility model adopts a highly efficient heat insulation and insulation design, which significantly improves the safety and energy efficiency of the equipment. A bakelite board is filled between the outer shell of the glue storage heating mechanism and the high-temperature glue pot and heating module inside. This structural design serves a dual purpose of heat insulation and electrical insulation. Firstly, the excellent heat insulation performance of the bakelite board reduces heat loss, making the temperature inside the glue pot more stable, reducing the power consumption of the heating module, and improving energy utilization efficiency. Secondly, the reliable insulation and heat insulation performance of the bakelite board work together to improve equipment safety: on the one hand, the heat insulation performance effectively blocks the transfer of heat to the outer shell of the equipment, significantly reducing the touch temperature of the equipment surface and fundamentally eliminating the safety hazard of burns to operators; on the other hand, the electrical insulation performance achieves complete isolation between the heating module and the outer shell at the electrical level, completely eliminating the risk of electric shock to operators due to leakage, thus fundamentally improving the safety of the equipment.

[0014] (3) The split-type structural layout of this utility model ensures the long-term reliability and lifespan of the temperature control mechanism. Addressing the severe challenges posed by high-temperature environments to electronic components, a split-type structure is creatively adopted, separating the temperature control mechanism from the heat storage heating mechanism. This design physically isolates the precision temperature control mechanism from the high-temperature heating module, completely preventing the high temperature generated by the latter from affecting the performance and operational stability of electronic components such as the control unit in the temperature control mechanism through heat conduction and radiation. This ensures the accuracy of temperature control and the long-term reliability of the system, extending the equipment's service life.

[0015] (4) This utility model achieves precise and stable temperature control, fundamentally ensuring the bonding quality. Through the closed-loop precise control of the glue pot temperature by the temperature control mechanism, the hot melt adhesive can be heated and stably maintained at the optimal working temperature (usually 270℃). This effectively avoids the problem of hot melt adhesive carbonization and decomposition due to excessively high temperatures, which leads to failure in traditional methods. It also eliminates the phenomenon of insufficient melting and poor flowability of hot melt adhesive due to excessively low temperatures, thus ensuring stable and reliable bonding strength and quality for each glue application.

[0016] In summary, this utility model comprehensively solves the efficiency, quality, safety and reliability problems of traditional methods by using key technologies such as precise temperature control, heat insulation and insulation, and split structure, providing a high-performance and highly reliable special glue-applying equipment for shoe production lines. Attached Figure Description

[0017] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0018] Figure 1 This is a three-dimensional structural diagram of an embodiment of the present utility model (power lines and signal transmission lines are not shown). Figure 2 This is a three-dimensional structural diagram of the glue storage heating mechanism in an embodiment of the present utility model; Figure 3 This is a cross-sectional view showing the structural relationship of the glue storage heating mechanism in an embodiment of this utility model; Figure 4 This is a schematic diagram showing the disassembled structure of the glue storage heating mechanism in an embodiment of this utility model; Figure 5 This is a three-dimensional structural diagram of the temperature control mechanism in an embodiment of this utility model; In the diagram: 1. Glue storage heating mechanism; 2. Temperature control mechanism; 3. Outer shell; 4. Heat-conducting block; 5. Heating rod; 6. Glue pot; 7. Glue pot lid; 8. Bakelite board; 9. Electrical box; 10. Solid-state relay; 11. Temperature controller; 12. Circuit breaker. Detailed Implementation

[0019] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the present invention.

[0020] This embodiment discloses a small hot melt adhesive machine, such as Figure 1 As shown, it includes a separate glue storage heating mechanism 1 and a temperature control mechanism 2. In actual use, the glue storage heating mechanism 1 is usually placed on the workbench of the shoe production line, while the temperature control mechanism 2 is usually placed below the shoe production line.

[0021] The adhesive storage heating mechanism 1 is used to melt solid hot melt adhesive, thereby providing molten hot melt adhesive to production line workers in an immediate manner. For example... Figures 2 to 4As shown, the glue storage and heating mechanism 1 includes a housing 3 and a heating module and a glue storage module disposed within the housing 3. The housing 3 is an aluminum square box with an open top. The heating module is located at the bottom inside the housing 3 and includes a heat-conducting block 4 and multiple heating rods 5 passing through the heat-conducting block 4. In this embodiment, the heat-conducting block 4 is an aluminum block with legs, exhibiting excellent thermal conductivity. The heating rods 5 include three arranged side-by-side within the aluminum block. The glue storage module includes a glue pot 6 for holding hot melt glue and a glue pot lid 7 that is fastened to the glue pot 6. The glue pot 6 is placed on the aforementioned aluminum block, with its bottom in good contact with the aluminum block so that the aluminum block can heat the glue pot 6. In this embodiment, the glue pot 6 is made of a metal with excellent thermal conductivity, such as aluminum alloy.

[0022] In this embodiment, the top opening of the outer casing 3 is sealed by a bakelite board 8, and the bottom surface of the bakelite board 8 presses against the rim of the glue pot 6 to fix the vertical position of the glue pot 6. Figure 4 As shown, the bakelite board 8 has a through hole at the position corresponding to the mouth of the glue pot 6. The top mouth of the glue pot 6 is connected to the outside through the through hole. When in use, production line workers can open the glue pot lid 7 to take out the molten hot melt glue in the glue pot 6.

[0023] Specifically, the aforementioned bakelite board 8 is fixed to the top opening of the outer casing 3 by screws, rivets, or tape.

[0024] Furthermore, such as Figure 3 As shown, in this embodiment, bakelite boards 8 are filled between the glue pot 6 and the side wall of the outer shell 3, between the heating module and the side wall of the outer shell 3, and between the heating module and the bottom surface of the outer shell 3. On the one hand, the position of the glue pot 6 and the heating module in the outer shell 3 is fixed by filling with bakelite boards 8, and on the other hand, it can also provide heat insulation and electrical insulation.

[0025] Temperature control mechanism 2 is used to precisely and stably control the temperature in the glue storage heating mechanism 1. For example... Figure 5 As shown, the temperature control mechanism 2 includes an electrical box 9 and a solid-state relay 10, a temperature controller 11, and a circuit breaker 12 fixed in the electrical box 9. It also includes a temperature sensor fixed in the aforementioned glue storage heating module for detecting the temperature of the glue pot 6. The temperature sensor is not shown in the accompanying drawings of this embodiment. The solid-state relay 10 is electrically connected between the heating rod 5 and the power supply, used to control the heating rod 5 to turn the power supply on or off. The temperature controller 11 is electrically connected to both the solid-state relay 10 and the temperature sensor, used to receive signals from the temperature sensor and output signals to control the solid-state relay 10. The circuit breaker 12 is electrically connected between the solid-state relay 10 and the power supply, used to act as a power switch and protect electrical equipment and circuit safety.

[0026] In actual use, hot melt adhesive is placed in the glue pot 6, and after the power is turned on, the heating module heats the glue pot 6 to melt the hot melt adhesive. Throughout the working process, the temperature sensor monitors the temperature of the glue pot 6 in real time and transmits the temperature signal to the temperature controller 11. After processing the temperature signal, the temperature controller 11 clearly displays the current temperature and the set temperature to the production line workers. At the same time, it outputs a signal to control the solid-state relay 10, which connects or disconnects the power supply to the heating rod 5 to adjust the heating power and stabilize the temperature of the glue pot 6 at the set value (usually 270℃).

[0027] Production line workers can take molten hot melt glue from the opening of glue pot 6 to fill in the missing glue areas on the upper and sole.

[0028] It should be noted that the above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions described in the above embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A small hot melt adhesive machine, characterized in that: It includes a separate glue storage heating mechanism and a temperature control mechanism; the glue storage heating mechanism includes a housing and a heating module and a glue storage module disposed in the housing, the heating module is electrically connected to the temperature control mechanism, and the glue storage module includes a glue pot whose bottom contacts the heating module and a glue pot lid that is fastened to the glue pot; The space between the glue pot and the outer shell, and the space between the heating module and the outer shell, are filled with bakelite board.

2. The small hot melt adhesive machine according to claim 1, characterized in that: The heating module includes a heat-conducting block and multiple heating rods inserted into the heat-conducting block.

3. The small hot melt adhesive machine according to claim 2, characterized in that: The heat-conducting block is an aluminum block with legs, which is located at the bottom of the housing.

4. The small hot melt adhesive machine according to any one of claims 1-3, characterized in that: The temperature control mechanism includes an electrical box and a solid-state relay and a temperature controller disposed in the electrical box; the solid-state relay is electrically connected between the heating module and the power supply, and the temperature controller is electrically connected to the solid-state relay; It also includes a temperature sensor disposed inside the outer casing for monitoring the temperature of the glue pot, the temperature sensor being electrically connected to the temperature controller.

5. The small hot melt adhesive machine according to claim 4, characterized in that: The temperature control mechanism also includes a circuit breaker located in the electrical box, which is electrically connected between the solid-state relay and the power supply.

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