Heating plate for hot melt adhesive machine

Abstract

The utility model relates to the technical field of hot melt equipment, and in particular to a heating plate for a hot melt adhesive machine, which includes a die casting, a heating tube arranged in the die casting, and a power supply unit for supplying power to the heating tube. The pipe sections at both ends of the heating tube are arranged along the circumference of the die casting, the middle pipe section of the heating tube is bent in the opposite direction, and the arrangement path of the middle pipe section is consistent with the arrangement path direction of the pipe sections at both ends of the heating tube, and the middle pipe section of the heating tube is arranged from the outside of the die casting toward the center of the die casting. The number of bends can be reduced, the assembly is more convenient and quick, and the heat generation of the die casting is also made more uniform. A heating tube is arranged in the die casting to make the surface of the entire die casting heat evenly, and only two interfaces are arranged on the die casting to facilitate the connection of the two ends of the heating tube with the power supply unit. The structure is simpler and cost-saving. Moreover, the energy loss is significantly reduced, and the efficiency of heating and the efficiency of heating and melting of the hot melt adhesive are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hot-melt equipment, in particular to a heating plate used for a hot-melt adhesive machine. Background Art

[0002] Hot melt adhesive is a plastic adhesive that is solid at room temperature. As the temperature rises, its physical form changes and becomes a liquid with a certain viscosity. Due to its high bonding strength and fast cooling speed, it is widely used in many industries such as packaging, home appliances, automobiles, and textiles. A hot melt adhesive machine is a mechanical device that applies hot melt adhesive to these industries. It heats and melts the hot melt adhesive, and under the action of a pressurized device, it transports the molten liquid hot melt adhesive to the product that needs to be sprayed. After rapid cooling, the product bonding is completed. The existing heating plate is equipped with 12 heating tubes inside and 24 corresponding interfaces on the outside, which is costly and has a large energy loss. Utility Model Content

[0003] In order to solve the technical defects mentioned in the above background technology, the purpose of the utility model is to provide a heating plate for a hot melt adhesive machine.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A heating plate for a hot melt adhesive machine, comprising a die casting, a heating tube arranged in the die casting, and a power supply unit for supplying power to the heating tube; the tube sections at both ends of the heating tube are arranged along the circumference of the die casting, the middle tube section of the heating tube is bent in the opposite direction, and the arrangement path of the middle tube section is consistent with the arrangement path direction of the tube sections at both ends of the heating tube, and the middle tube section of the heating tube is arranged from the outside of the die casting toward the center of the die casting; the inside of the die casting is provided with a wire groove matching the arrangement path of the heating tube; one side of the die casting is provided with two interfaces, one end of the heating tube is arranged corresponding to one of the interfaces, and the end of the heating tube passes through the corresponding interface to be connected to the power supply unit.

[0006] By adopting the above technical solution, a heating pipe is arranged inside the die casting to make the surface of the entire die casting heat evenly, and only two interfaces are arranged on the die casting to facilitate the connection of the two ends of the heating pipe with the power supply unit, which makes the structure simpler and saves costs. Moreover, the energy loss is significantly reduced, and the heating efficiency and the efficiency of heating and melting the hot melt adhesive are improved. The middle pipe section of the heating pipe is arranged from the outside of the die casting toward the center of the die casting, which reduces the number of bends and makes assembly more convenient and quick.

[0007] Furthermore, the die-casting is configured as a disc-shaped structure, and the area enclosed between two adjacent sections of the heating pipe along the diameter direction is configured as a C-shaped structure, thereby reducing the number of reverse bending times and improving installation efficiency.

[0008] Furthermore, the heating tube is symmetrically arranged on the die casting along the diameter direction of the center between the two ends of the heating tube, so that the die casting heats evenly and the heating and melting quality of the hot melt adhesive is improved.

[0009] Furthermore, the distance between the outer surface of the heating pipe and the surface of the die casting on one side of which the interface is provided is set to 2.5-3.5 mm, so as to facilitate the protection of the heating pipe.

[0010] Furthermore, the power supply unit includes a ceramic tube fixedly connected to the end of the heating tube and a power line connected to the ceramic tube. The end surface area of ​​the end of the ceramic tube connected to the heating tube is larger than the end surface area of ​​the ceramic tube connected to the power line, which makes installation and removal more convenient and improves assembly efficiency.

[0011] Furthermore, the power supply unit also includes a silicone sheath, which is sleeved on the end of the heating tube, the ceramic tube, and the outer peripheral side of one end of the power cord connected to the ceramic tube, which is beneficial to protecting the connection parts and extending the service life.

[0012] Furthermore, a plurality of limit blocks are arranged at intervals on the side of the die-casting away from the interface, and the plurality of limit blocks are evenly arranged in a ring shape, which can prevent the surface of the die-casting from directly contacting other equipment after the hot melt adhesive melts, thereby helping to protect the equipment.

[0013] Furthermore, a through mounting hole is provided at the center of the die casting for fixed connection with the pressure plate on the hot melt adhesive machine, and the installation is convenient. The innermost layer of the middle pipe section of the heating pipe is arranged around the peripheral side of the mounting hole, so that the die casting heats evenly.

[0014] In summary, the beneficial effects of the utility model are:

[0015] The utility model arranges a heating pipe in the die casting to make the surface of the entire die casting heat evenly, and only sets two interfaces on the die casting to facilitate the connection of the two ends of the heating pipe with the power supply unit. The structure is simpler and cost-saving. Moreover, the energy loss is significantly reduced, and the heating efficiency and the efficiency of heating and melting the hot melt adhesive are improved. The middle pipe section of the heating pipe is arranged from the outside of the die casting toward the center of the die casting, which reduces the number of bends and makes assembly more convenient and quick. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1It is a structural schematic diagram of a heating plate used for a hot melt adhesive machine of the utility model.

[0017] Figure 2 It is a front view of the internal structure of the heating plate used for the hot melt adhesive machine of the utility model.

[0018] Figure 3 It is a bottom view of the internal structure of the heating plate used for the hot melt adhesive machine of the utility model.

[0019] Figure 4 It is a side view of a heating plate used for a hot melt adhesive machine of the utility model.

[0020] Figure 5 yes Figure 3 Schematic diagram of the cross-sectional structure of AA.

[0021] Figure 6 It is a schematic cross-sectional structure diagram of another position of the heating plate used for the hot melt adhesive machine of the utility model.

[0022] Description of reference numerals in the figures:

[0023] 1. Heating plate for hot melt adhesive machine; 2. Die casting; 21. Mounting hole; 22. Snap-in hole; 23. Limit block; 3. Heating tube; 4. Power supply unit; 41. Ceramic tube; 42. Power cord; 43. Silicone sheath. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the utility model.

[0025] Those skilled in the art should understand that, in the disclosure of the present invention, the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms should not be understood as limiting the present invention.

[0026] In the description of the utility model, if there is a word description such as "several", it means one or more, and the meaning of "more" is two or more. Greater than, less than, and more than are understood to exclude the number itself, and above, below, and within are understood to include the number itself. If there is a description of the first, second, and third, it is only used to distinguish the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0027] The following is combined with Figure 1-6 , the embodiments of the utility model are further described in detail.

[0028] A heating plate 1 for a hot melt adhesive machine, such as Figure 1 , Figure 2 , Figure 3 As shown, it includes a die casting 2, a heating tube 3 arranged in the die casting 2, and a power supply unit 4 for supplying power to the heating tube 3. The pipe sections at both ends of the heating tube 3 are arranged along the circumference of the die casting 2, the middle pipe section of the heating tube 3 is bent in the opposite direction, and the arrangement path of the middle pipe section is consistent with the arrangement path direction of the pipe sections at both ends of the heating tube 3, and the middle pipe section of the heating tube 3 is arranged from the outside of the die casting 2 toward the center of the die casting 2. The inside of the die casting 2 is provided with a wire groove matching the arrangement path of the corresponding heating tube 3. Two interfaces are provided on one side of the die casting 2, and one end of the heating tube 3 is provided corresponding to one interface, and the end of the heating tube 3 passes through the corresponding interface and is connected to the power supply unit 4.

[0029] A heating pipe 3 is arranged inside the die casting 2 so that the surface of the entire die casting 2 is heated evenly. Only two interfaces are arranged on the die casting 2 so that the two ends of the heating pipe 3 can be connected to the power supply unit 4. The structure is simpler and cost-saving. Moreover, energy loss is significantly reduced, and the efficiency of heating and melting of the hot melt adhesive is improved. The middle pipe section of the heating pipe 3 is arranged from the outside of the die casting 2 toward the center of the die casting 2, which reduces the number of bends and makes assembly more convenient and quick.

[0030] In this embodiment, a through mounting hole 21 is provided at the center of the die casting 2 for fixed connection with the pressure plate on the hot melt adhesive machine, and the installation is convenient. The innermost layer of the middle pipe section of the heating pipe 3 is arranged around the circumference of the mounting hole 21, so that the die casting 2 heats evenly.

[0031] Please refer to Figure 1 , Figure 2 , Figure 4The two interfaces are arranged adjacent to each other, and a plurality of clamping holes 22 are correspondingly arranged on one side of the die casting 2 where the interface is arranged, and the clamping holes 22 are connected to the wire groove. The clamping holes 22 are used to fix the heating tube 3, and a clamping hole 22 is arranged at each end of the heating tube 3, and a clamping hole 22 is correspondingly arranged at the bending part of the heating tube 3. In this embodiment, there are 5 clamping holes 22.

[0032] Please refer to Figure 3 , Figure 4 , Figure 6 A plurality of limit blocks 23 are arranged at intervals on the side of the die casting 2 away from the interface. The plurality of limit blocks 23 are evenly arranged in a ring shape, which can prevent the surface of the die casting 2 from directly contacting other equipment after the hot melt adhesive is melted, which is beneficial to protecting the equipment.

[0033] Please refer to Figure 2 The die casting 2 is set as a disc-shaped structure, and the area enclosed between the pipe sections of two adjacent sections of the heating pipe 3 along the diameter direction is set as a C-shaped structure, which reduces the number of reverse bending and improves the installation efficiency.

[0034] The heating tube 3 is symmetrically arranged on the die casting 2 along the diameter direction of the center between the two ends of the heating tube 3, so that the die casting 2 is heated evenly, and the heating and melting quality of the hot melt adhesive is improved.

[0035] Please refer to Figure 5 The distance between the outer surface of the heating tube 3 and the surface of the die casting 2 on the side where the interface is provided is set to 2.5-3.5 mm, which is convenient for protecting the heating tube 3. In this embodiment, it is set to 3 mm.

[0036] In this embodiment, please refer to Figure 1 , Figure 5 , Figure 6 The power supply unit 4 includes a ceramic tube 41 fixedly connected to the end of the heating tube 3 and a power cord 42 connected to the ceramic tube 41. The end surface area of ​​the ceramic tube 41 connected to the heating tube 3 is larger than the end surface area of ​​the ceramic tube 41 connected to the power cord 42, which makes installation and removal more convenient and improves assembly efficiency. The power cord 42 is fixed to the ceramic tube 41 by high-temperature resistant silicone glue. The input voltage of the power cord 42 can be set to 220V or 380V.

[0037] The power supply unit 4 further includes a silicone sheath 43, which is sleeved on the end of the heating tube 3, the ceramic tube 41, and the outer peripheral side of one end where the power cord 42 is connected to the ceramic tube 41, which is beneficial to protecting the connection parts and extending the service life.

[0038] The embodiments of this specific implementation are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. The same components are represented by the same figure marks. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A heating plate (1) for a hot melt adhesive machine, characterized in that: The invention comprises a die casting (2), a heating tube (3) arranged in the die casting (2), and a power supply unit (4) for supplying power to the heating tube (3); the tube sections at both ends of the heating tube (3) are arranged along the circumference of the die casting (2), the middle tube section of the heating tube (3) is bent in the opposite direction, and the arrangement path of the middle tube section is consistent with the arrangement path direction of the tube sections at both ends of the heating tube (3), and the middle tube section of the heating tube (3) is arranged from the outside of the die casting (2) toward the center of the die casting (2); a wire groove matching the arrangement path of the heating tube (3) is arranged inside the die casting (2); two interfaces are arranged on one side of the die casting (2), one end of the heating tube (3) is arranged corresponding to one of the interfaces, and the end of the heating tube (3) passes through the corresponding interface to be connected to the power supply unit (4).

2. The heating plate (1) for a hot melt adhesive machine according to claim 1, characterized in that: The die-casting (2) is configured as a disc-shaped structure, and the area enclosed between two adjacent sections of the heating tube (3) along the diameter direction is configured as a C-shaped structure.

3. The heating plate (1) for a hot melt adhesive machine according to claim 2, characterized in that: The heating tube (3) is symmetrically arranged on the die casting (2) along the diameter direction of the center between the two ends of the heating tube (3).

4. The heating plate (1) for a hot melt adhesive machine according to claim 1, characterized in that: The distance between the outer surface of the heating tube (3) and the surface of the die casting (2) on one side where the interface is provided is set to 2.5-3.5 mm.

5. The heating plate (1) for a hot melt adhesive machine according to claim 1, characterized in that: The power supply unit (4) comprises a ceramic tube (41) fixedly connected to the end of the heating tube (3) and a power line (42) connected to the ceramic tube (41); the end surface area of ​​one end of the ceramic tube (41) connected to the heating tube (3) is larger than the end surface area of ​​the ceramic tube (41) connected to the power line (42).

6. The heating plate (1) for a hot melt adhesive machine according to claim 5, characterized in that: The power supply unit (4) further comprises a silicone sheath (43), wherein the silicone sheath (43) is sleeved on the end of the heating tube (3), the ceramic tube (41), and the outer peripheral side of one end of the power line (42) connected to the ceramic tube (41).

7. The heating plate (1) for a hot melt adhesive machine according to claim 1, characterized in that: A plurality of limit blocks (23) are arranged at intervals on a side of the die casting (2) facing away from the interface, and the plurality of limit blocks (23) are arranged in a ring shape and at even intervals.

8. The heating plate (1) for a hot melt adhesive machine according to claim 1, characterized in that: The center of the die-casting (2) is provided with a through mounting hole (21) for fixed connection with a pressure plate on a hot melt adhesive machine; the innermost layer of the middle pipe section of the heating tube (3) is arranged around the circumference of the mounting hole (21).

Images