Hot melt adhesive heating and melting device

Abstract

The utility model discloses a hot melt adhesive heating melting device, including base, melting box, protective cover, be provided with the stirring part in the melting box, be provided with stirring assembly in the melting box, be provided with heating assembly on the melting box, the top of protective cover is provided with a plurality of toughened glass, the top of protective cover is provided with pressure -relief subassembly. In the utility model, the device heating assembly adopts the layered design of first heating wire, heat preservation board, second heating wire, and is matched with independent first temperature controller and second temperature controller and carries out individual control, wherein, the first heating wire close to the melting box can directly accurate heating to the glue material, the outer second heating wire can maintain the whole temperature stability of heating chamber, and the middle heat preservation board effectively blocks the heat loss and the inside and outside temperature interference, thereby forms the double guarantee of inside layer accurate heating and outside layer constant temperature heat preservation.

Description

Technical Field

[0001] This utility model relates to the field of hot melt adhesive heating and melting technology, and in particular to a hot melt adhesive heating and melting device. Background Technology

[0002] Hot melt adhesives, as solvent-free and fast-curing bonding materials, are widely used in packaging, electronics, automotive, construction and other fields. Among them, moisture-curing polyurethane hot melt adhesives have seen a continuous increase in demand in high-end bonding scenarios due to their high bonding strength, good weather resistance and low-temperature toughness.

[0003] Existing devices mostly use a single heating wire or heating tube to heat the melting tank as a whole, lacking a layered temperature control structure. The adhesive near the inner wall of the melting tank is prone to localized overheating due to direct heating, while the adhesive in the center of the melting tank may not melt completely due to delayed heat transfer. Furthermore, in research and development or small-batch production, it is often necessary to change to different hot melt adhesive formulations. Existing devices often use bolts to fix the melting tank and protective cover, requiring wrenches and other tools for disassembly, which is cumbersome. To overcome these disadvantages, this utility model provides a hot melt adhesive heating and melting device. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a hot melt adhesive heating and melting device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a hot melt adhesive heating and melting device, comprising a base, a melting tank, and a protective cover. A stirring component is provided inside the melting tank, a stirring assembly is provided inside the melting tank, a heating assembly is provided on the melting tank, a plurality of tempered glass is provided on the top of the protective cover, a pressure relief assembly is provided on the top of the protective cover, a discharge assembly is provided at the discharge port at the bottom of the melting tank, an external thread is provided on the top of the melting tank, and an internal threaded hole is provided inside the protective cover.

[0006] Furthermore, the stirring assembly includes a second cross slot rotatably connected to the bottom of the melting tank, a first cross block fixedly connected to one end of the stirring element, the second cross slot and the first cross block being inserted into each other, the first cross slot rotatably connected to the bottom of the outside of the melting tank, the first cross slot penetrating the melting tank and being fixedly connected to one side of the second cross slot, a servo motor fixedly connected to the bottom of the base, a second cross block rotatably connected to the top of the base, the second cross block and the first cross slot being inserted into each other, and the output end of the servo motor penetrating the base and being fixedly connected to one end of the second cross block.

[0007] Furthermore, the heating assembly includes a heating chamber fixedly connected to the melting tank. A first heating wire is fixedly connected inside the heating chamber near the melting tank. An insulation plate is fixedly connected inside the heating chamber and to one side of the first heating wire. A second heating wire is fixedly connected inside the heating chamber and to one side of the insulation plate. A protective chamber is fixedly connected to the heating chamber. A first temperature controller is fixedly connected to the heating chamber and inside the protective chamber. The output end of the first temperature controller passes through the heating chamber and the insulation plate and is fixedly connected to the first heating wire. A second temperature controller is fixedly connected to the heating chamber and inside the protective chamber. The output end of the second temperature controller passes through the heating chamber and is fixedly connected to the second heating wire.

[0008] Furthermore, the pressure relief assembly includes a pressure detector fixedly connected to the top of the protective cover, the detection end of the pressure detector penetrating through the protective cover, and a pressure relief valve fixedly connected to the vent hole at the top of the protective cover.

[0009] Furthermore, the discharge assembly includes a conveying pipe fixedly connected to the discharge port at the bottom of the melting tank, and a valve is fixedly connected to the conveying pipe.

[0010] Furthermore, a control panel is fixedly connected to one side of the base, and a PLC controller is fixedly connected to one side of the base and the control panel side, and the control panel and the PLC controller are electrically connected.

[0011] Furthermore, a number of first handles are fixedly connected to the melting box, and a number of second handles are fixedly connected to the protective cover.

[0012] The beneficial effects of this utility model are:

[0013] When using this utility model,

[0014] 1. The heating component of this device adopts a layered design of a first heating wire, an insulation plate, and a second heating wire, and is equipped with independent first and second temperature controllers for individual control. The first heating wire, which is close to the melting chamber, can directly and precisely heat the rubber compound. The outer second heating wire can maintain the overall temperature stability of the heating chamber. The middle insulation plate effectively blocks heat loss and temperature interference between the inner and outer layers, thus forming a dual guarantee of precise inner heating and constant outer temperature insulation. This structure avoids the problem of local overheating or unmelted parts of the rubber compound caused by traditional single heating methods, ensuring that the rubber compound is always in the optimal melting temperature range.

[0015] 2. The external thread at the top of the melting tank is threaded to the internal thread hole inside the protective cover. The stirring component in the stirring assembly is connected by inserting the first cross-shaped plug and the second cross-shaped slot. The first cross-shaped slot and the second cross-shaped plug in the power transmission path are also insertion structures. The stirring component can be directly removed from the melting tank. The above structure eliminates the complicated tool operation during the disassembly of traditional devices. It not only makes the cleaning of the inner wall of the melting tank and the stirring component faster, but also reduces cross-contamination when changing different rubber formulations, and significantly improves the cleaning efficiency and usage flexibility of the device. Attached Figure Description

[0016] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the specific embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 : A perspective view of this utility model;

[0018] Figure 2 : A schematic diagram of the base 1 structure of this utility model;

[0019] Figure 3 : A three-dimensional sectional view of the melting box 4 and the heating chamber 11 of this utility model;

[0020] Figure 4 : Schematic diagram of the protective cover 29 of this utility model.

[0021] The attached figures are labeled as follows:

[0022] 1. Base; 2. Control panel; 3. PLC controller; 4. Melting tank; 5. First cross-shaped slot; 6. Second cross-shaped slot; 7. First cross-shaped insert; 8. Stirring component; 9. Servo motor; 10. Second cross-shaped insert; 11. Heating chamber; 12. First heating wire; 13. Insulation board; 14. Second heating wire; 15. Protective chamber; 16. First temperature controller; 17. Second temperature controller; 18. First handle; 19. Delivery pipe; 20. Valve; 22. Tempered glass; 23. Pressure relief valve; 25. Pressure detector; 26. External thread; 27. Internal thread; 28. Second handle; 29. ​​Protective cover. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0024] like Figure 1-4 As shown, a hot melt adhesive heating and melting device is disclosed, including a base 1, a melting tank 4, and a protective cover 29. The melting tank 4 is equipped with a stirring component 8 and a stirring assembly. A heating assembly is installed on the melting tank 4. Several tempered glass plates 22 are installed on the top of the protective cover 29. A pressure relief assembly is installed on the top of the protective cover 29. A discharge assembly is installed at the bottom outlet of the melting tank 4. An external thread 26 is provided on the top of the melting tank 4. An internal thread hole 27 is provided inside the protective cover 29.

[0025] As shown in the figure, the stirring assembly includes a second cross slot 6 rotatably connected to the bottom of the melting tank 4. A first cross plug 7 is fixedly connected to one end of the stirring component 8. The second cross slot 6 and the first cross plug 7 are inserted and connected. A first cross slot 5 is rotatably connected to the bottom of the outside of the melting tank 4. The first cross slot 5 passes through the melting tank 4 and is fixedly connected to one side of the second cross slot 6. A servo motor 9 is fixedly connected to the bottom of the base 1. A second cross plug 10 is rotatably connected to the top of the base 1. The second cross plug 10 and the first cross slot 5 are inserted and connected. The output end of the servo motor 9 passes through the base 1 and is fixedly connected to one end of the second cross plug 10, and is used to stir the hot melt adhesive in the melting tank 4.

[0026] As shown in the figure, the heating assembly includes a heating chamber 11 fixedly connected to the melting tank 4. A first heating wire 12 is fixedly connected inside the heating chamber 11 near the melting tank 4. An insulation plate 13 is fixedly connected inside the heating chamber 11 and on one side of the first heating wire 12. A second heating wire 14 is fixedly connected inside the heating chamber 11 and on one side of the insulation plate 13. A protective chamber 15 is fixedly connected to the heating chamber 11. A first temperature controller 16 is fixedly connected to the heating chamber 11 and inside the protective chamber 15. The output end of the first temperature controller 16 passes through the heating chamber 11 and the insulation plate 13 and is fixedly connected to the first heating wire 12. A second temperature controller 17 is fixedly connected to the heating chamber 11 and inside the protective chamber 15. The output end of the second temperature controller 17 passes through the heating chamber 11 and is fixedly connected to the second heating wire 14. It is used to heat the hot melt adhesive in the melting tank 4.

[0027] As shown in the figure, the pressure relief assembly includes a pressure detector 25 fixedly connected to the top of the protective cover 29. The detection end of the pressure detector 25 passes through the protective cover 29. A pressure relief valve 23 is fixedly connected to the vent hole at the top of the protective cover 29. When the pressure in the melting tank 4 is too high, pressure relief is performed.

[0028] As shown in the figure, the discharge assembly includes a conveying pipe 19 fixedly connected to the discharge port at the bottom of the melting tank 4, and a valve 20 fixedly connected to the conveying pipe 19, which discharges the hot melt adhesive in the molten state in the melting tank 4.

[0029] As shown in the figure, a control panel 2 is fixedly connected to one side of the base 1, and a PLC controller 3 is fixedly connected to one side of the base 1 and the control panel 2. The control panel 2 and the PLC controller 3 are electrically connected and control the equipment on the device.

[0030] As shown in the figure, several first handles 18 are fixedly connected to the melting box 4, and several second handles 28 are fixedly connected to the protective cover 29, so as to facilitate the operator to move the melting box 4 and the protective cover 29.

[0031] Working Principle: During use, first check the entire device for damage. After inspection, the operator uses the control panel 2 and PLC controller 3 to control the equipment. First, insert the first cross-shaped insert 7 at one end of the agitator 8 into the second cross-shaped slot 6 at the bottom of the melting tank 4 to quickly install the agitator 8. Then, insert the second cross-shaped insert 10 at the top of the base 1 into the first cross-shaped slot 5 at the bottom of the melting tank 4. After this, add the hot melt adhesive to the melting tank 4. Then, screw the external thread 26 at the top of the melting tank 4 into the internal threaded hole 27 inside the protective cover 29 to seal the connection between the protective cover 29 and the melting tank 4. Then, the first heating wire 12 near the melting tank 4 is activated under the control of the first temperature controller 16, directly heating the hot melt adhesive material inside the melting tank 4 to ensure the core area of ​​the adhesive quickly reaches the melting temperature. Simultaneously, the second heating wire 14 outside the heating chamber 11 is activated under the control of the second temperature controller 17 to maintain a stable overall temperature in the heating chamber 11. Meanwhile, the insulation board inside the heating chamber 11... 13 can block the heat interference between the first heating wire 12 and the second heating wire 14, preventing heat loss. During the heating process, the servo motor 9 at the bottom of the base 1 is started. The output of the servo motor 9 drives the second cross plug 10 to rotate. The second cross plug 10 transmits power to the second cross slot 6 in the melting box 4 through the insertion structure with the first cross slot 5, which finally drives the stirring component 8 to rotate, so as to stir the hot melt adhesive in the melting box 4. During the melting process, the operator can observe the internal stirring and melting state through the tempered glass 22 at the top of the protective cover 29. During the heating and stirring process, the pressure detector 25 at the top of the protective cover 29 continuously detects the internal pressure of the melting box 4. When the internal pressure exceeds the safe value, the PLC controller 3 triggers the pressure relief valve 23 at the top of the protective cover 29 to open, releasing the excess pressure through the exhaust hole. After the pressure drops to the safe range, the pressure relief valve 23 closes to ensure the safe operation of the device. When cleaning the device, unscrew the protective cover 29, pull out the stirring component 8 directly, and clean the inner wall of the melting box 4 and the stirring component 8 respectively.

[0032] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A hot melt adhesive heating and melting device, comprising a base (1), a melting tank (4), and a protective cover (29), characterized in that: The melting tank (4) is equipped with a stirring component (8), a stirring assembly, a heating assembly, a number of tempered glass (22) on the top of the protective cover (29), a pressure relief assembly, a discharge assembly at the bottom outlet of the melting tank (4), an external thread (26) on the top of the melting tank (4), and an internal thread hole (27) inside the protective cover (29).

2. The hot melt adhesive heating and melting device according to claim 1, characterized in that: The stirring assembly includes a second cross slot (6) rotatably connected to the bottom of the melting tank (4). One end of the stirring component (8) is fixedly connected to a first cross plug (7). The second cross slot (6) and the first cross plug (7) are inserted and connected. The bottom of the melting tank (4) is rotatably connected to a first cross slot (5). The first cross slot (5) passes through the melting tank (4) and is fixedly connected to one side of the second cross slot (6). The bottom of the base (1) is fixedly connected to a servo motor (9). The top of the base (1) is rotatably connected to a second cross plug (10). The second cross plug (10) and the first cross slot (5) are inserted and connected. The output end of the servo motor (9) passes through the base (1) and is fixedly connected to one end of the second cross plug (10).

3. The hot melt adhesive heating and melting device according to claim 1, characterized in that: The heating assembly includes a heating chamber (11) fixedly connected to the melting tank (4). A first heating wire (12) is fixedly connected inside the heating chamber (11) near the melting tank (4). A heat insulation plate (13) is fixedly connected inside the heating chamber (11) and on one side of the first heating wire (12). A second heating wire (14) is fixedly connected inside the heating chamber (11) and on one side of the heat insulation plate (13). A protective chamber (15) is fixedly connected to the heating chamber (11). A first temperature controller (16) is fixedly connected to the heating chamber (11) and inside the protective chamber (15). The output end of the first temperature controller (16) passes through the heating chamber (11) and the heat insulation plate (13) and is fixedly connected to the first heating wire (12). A second temperature controller (17) is fixedly connected to the heating chamber (11) and inside the protective chamber (15). The output end of the second temperature controller (17) passes through the heating chamber (11) and is fixedly connected to the second heating wire (14).

4. The hot melt adhesive heating and melting device according to claim 1, characterized in that: The pressure relief assembly includes a pressure detector (25) fixedly connected to the top of the protective cover (29), the detection end of the pressure detector (25) penetrates through the protective cover (29), and a pressure relief valve (23) is fixedly connected to the exhaust hole at the top of the protective cover (29).

5. The hot melt adhesive heating and melting device according to claim 1, characterized in that: The discharge assembly includes a conveying pipe (19) fixedly connected to the discharge port at the bottom of the melting tank (4), and a valve (20) is fixedly connected to the conveying pipe (19).

6. The hot melt adhesive heating and melting device according to claim 1, characterized in that: A control panel (2) is fixedly connected to one side of the base (1), and a PLC controller (3) is fixedly connected to one side of the base (1) and the control panel (2). The control panel (2) and the PLC controller (3) are electrically connected.

7. The hot melt adhesive heating and melting device according to claim 1, characterized in that: A number of first handles (18) are fixedly connected to the melting box (4), and a number of second handles (28) are fixedly connected to the protective cover (29).

Images