Nozzle heating device for a glue dispenser

Abstract

The utility model discloses a nozzle heating device for point gum machine, it includes heating cavity, is provided with stirring conveyor in the heating cavity, stirring conveyor includes pivot, bevel gear no.

Description

Technical Field

[0001] This utility model relates to the field of dispensing machine technology, and in particular to a nozzle heating device for a dispensing machine. Background Technology

[0002] In electronic packaging, dispensing machines enable precise bonding of chips to substrates. In automotive electronics, they provide moisture-proof seals for sensor pins. In medical device manufacturing, they can precisely apply biocompatible adhesives. Dispensing machines must ensure that the adhesive does not overflow the preset range and cause waste, nor does it affect product performance due to insufficient quantity. The nozzle heating devices of existing dispensing machines still have the following problems: In some dispensing machines, the glue in the nozzle heating device usually relies on its own gravity or the pressure device of the dispensing machine to flow naturally. This delivery method is prone to insufficient flow and local stagnation of glue in the heating chamber, resulting in uneven heating, which in turn affects the dispensing accuracy and quality, and is not conducive to stable and efficient dispensing operations. Some dispensing machines use a single heating method for their nozzle heating devices. The heating source typically heats the entire nozzle, making it difficult to precisely control the heating according to the different heating needs of the nozzle and the glue tank. This results in an unbalanced heat distribution, often requiring an extra heating time to reach the preset temperature, which severely slows down the preparation process before dispensing. Utility Model Content

[0003] The purpose of this invention is to provide a nozzle heating device for a dispensing machine, which solves the problem that the glue in the nozzle heating device of some existing dispensing machines usually relies on its own gravity or the pressure device of the dispensing machine to flow naturally and the heating method is singular. Usually, the heating source heats the whole, making it difficult to accurately control according to the different heating requirements of the nozzle and glue tank.

[0004] To achieve the above objectives, a nozzle heating device for a dispensing machine is provided, comprising a heating chamber and a glue tank. A fixing plate is fixedly installed on the outer side of the heating chamber, and a motor is fixedly installed on the upper end of the fixing plate. A fixing column is fixedly installed inside the heating chamber, and a conical transmission box is fixedly installed at one end of the fixing column. A stirring and conveying device is provided inside the heating chamber. The stirring and conveying device includes a rotating shaft, a first bevel gear, a rotating rod, a second bevel gear, and a spiral conveying rod. The output end of the motor passes through the heating chamber and is connected to the rotating shaft via a coupling. The first bevel gear is mounted on the rotating shaft and is rotatably installed inside a conical transmission box. A rotating rod is rotatably installed at the top of the conical transmission box, and a second bevel gear is mounted on the rotating rod. The first and second bevel gears mesh with each other. One end of the rotating rod passes through the conical transmission box and is fixedly connected downward to the spiral conveying rod.

[0005] According to the nozzle heating device for the dispensing machine, a second flange is fixedly installed at the upper end of the heating chamber, and a first flange is connected to the second flange.

[0006] According to the nozzle heating device for the dispensing machine, the flange is fixedly installed in the middle of the glue tank, and the body of the glue tank located below the flange is installed in the heating chamber.

[0007] According to the nozzle heating device for the dispensing machine, temperature sensors are provided at both the upper and lower ends of the heating chamber, and the nozzle body is provided at the bottom of the heating chamber.

[0008] According to the nozzle heating device for the dispensing machine, the heating chamber is composed of a heat insulation layer and a heat conduction layer. The heat conduction layer is made of oxygen-free copper, and the heat insulation layer is made of aluminum silicate fiber reinforced ceramic composite material.

[0009] According to the nozzle heating device for the dispensing machine, annular groove 1 and annular groove 2 are provided at the upper and lower ends of the opposite side of the heat-conducting layer and the heat-insulating layer, and heating wire 1 and heating wire 2 are provided in annular groove 1 and annular groove 2, respectively.

[0010] According to the nozzle heating device for the dispensing machine, the first heating wire is disposed in the first annular groove, the second heating wire is disposed in the second annular groove, and the density of the first heating wire in the first annular groove is less than that of the second heating wire in the second annular groove.

[0011] According to the nozzle heating device for the dispensing machine, the upper end of the glue tank is provided with a glue inlet pipe.

[0012] The above-mentioned solution has the following beneficial effects: This invention improves the uneven heating by installing a stirring and conveying device inside the heating chamber. During use, the rotation of the spiral blades drives the glue to flow inside the heating chamber, allowing the glue to fully contact the heating components, thus effectively improving the uneven heating and enhancing the uniformity and consistency of heating. This invention features annular grooves 1 and 2 at the upper and lower ends of the heating chamber, along with heating wires 1 and 2. The density of heating wire 1 at the upper end is lower than that of heating wire 2 at the lower end. During use, the upper heating wire preheats the glue in the glue tank, while the higher-density heating wire 2 prioritizes heating the glue near the nozzle body. Furthermore, temperature sensors at both ends allow for precise control of the different heating requirements of the nozzle and glue tank, thereby reducing heating time and improving the preparation process before dispensing.

[0013] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments; Figure 1 This is an overall schematic diagram of the nozzle heating device for a dispensing machine according to the present invention; Figure 2 This is a cross-sectional view of the nozzle heating device for a dispensing machine according to the present invention; Figure 3 This is a schematic diagram of the internal structure of the conical transmission box of the nozzle heating device for a dispensing machine according to this utility model; Figure 4 This is a schematic diagram of the heat-conducting layer of the nozzle heating device for a dispensing machine according to this utility model.

[0015] Legend: 1. Heating chamber; 2. Nozzle body; 3. Fixing plate; 4. Motor; 5. Inlet hose; 6. Glue tank; 7. Flange 1; 8. Flange 2; 9. Conical transmission box; 10. Rotating shaft; 11. Heat-conducting layer; 12. Heat insulation layer; 13. Fixing column; 14. Screw conveyor rod; 15. Bevel gear 1; 16. Bevel gear 2; 17. Rotating rod; 18. Annular groove 1; 19. Heating wire 1; 20. Annular groove 2; 21. Heating wire 2; 22. Temperature sensor. Detailed Implementation

[0016] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0017] Reference Figure 1-4This utility model embodiment is used for a nozzle heating device for a dispensing machine, which includes a heating chamber 1 and a glue tank 6. A fixing plate 3 is fixedly installed on the outside of the heating chamber 1, and a motor 4 is fixedly installed on the upper end of the fixing plate 3. A fixing column 13 is fixedly installed inside the heating chamber 1, and a conical transmission box 9 is fixedly installed at one end of the fixing column 13. A stirring and conveying device is provided inside the heating chamber 1. The stirring and conveying device includes a rotating shaft 10, a first bevel gear 15, a rotating rod 17, a second bevel gear 16, and a spiral conveying rod 14. The output end of the motor 4 passes through the heating chamber 1 and is connected to the rotating shaft 10 through a coupling. A first bevel gear 15 is provided on the rotating shaft 10. The first bevel gear 15 is rotatably installed in the conical transmission box 9. A rotating rod 17 is rotatably installed at the top of the conical transmission box 9. A second bevel gear 16 is provided on the rotating rod 17. The rotating rod 17 is meshed with bevel gear 16. One end of the rotating rod 17 passes through the conical transmission box 9 and is fixedly connected to the spiral conveying rod 14. In use, after the motor 4 on the fixed plate 3 on the outside of the heating chamber 1 is started, its output end drives the rotating shaft 10 through the heating chamber 1 to rotate through the coupling. The bevel gear 15 on the rotating shaft 10 meshes with the bevel gear 16 on the rotating rod 17 in the conical transmission box 9 supported by the fixed column 13, converting the horizontal power into the vertical direction, driving the spiral conveying rod 14 at the lower end of the rotating rod 17 to rotate, realizing the pushing and stirring of the glue. This structure realizes the power steering through bevel gear meshing. The conical transmission box 9 protects the gears from glue contamination. The spiral conveying rod 14 enhances the contact between the glue and the heating components during the conveying process, improves the heating uniformity, and adapts to the conveying needs of glues of different viscosities. A flange 2 8 is fixedly installed at the upper end of the heating chamber 1. A flange 1 7 is connected to the flange 2 8. The flange 1 7 is fixedly installed in the middle of the glue tank 6. The glue tank 6, located below the flange 1 7, is installed inside the heating chamber 1. Temperature sensors 22 are installed at both the upper and lower ends of the heating chamber 1. A nozzle body 2 is installed at the bottom of the heating chamber 1. The heating chamber 1 consists of a heat insulation layer 12 and a heat conduction layer 11. The heat conduction layer 11 is made of oxygen-free copper, and the heat insulation layer 12 is made of aluminum silicate fiber reinforced ceramic composite material. Annular grooves 18 and 20 are opened at the upper and lower ends of opposite sides of the heat conduction layer 11 and the heat insulation layer 12. Heating elements are installed in both annular grooves 18 and 20. Heating wire 19 and heating wire 21 are arranged in annular groove 18 and annular groove 20, respectively. The density of heating wire 19 in annular groove 18 is less than that of heating wire 21 in annular groove 20. The glue tank 6 is equipped with a glue inlet pipe 5 at the upper end. The heating chamber 1 adopts a layered design of heat insulation and heat conduction. Combined with the upper and lower heating wires with different densities, it can efficiently transfer heat and specifically improve the temperature near the nozzle, while reducing heat loss and saving energy. The dual temperature sensors 22 can accurately monitor the temperature inside the chamber to ensure that the glue is in a suitable temperature range and ensure stable glue dispensing quality. The glue inlet pipe 5 at the upper end of the glue tank 6 is designed to facilitate continuous glue replenishment and improve work efficiency.

[0018] Working principle: When the nozzle heating device for the dispensing machine is put into use, after the device is started, the heating wires 19 and 21 in the annular groove 18 and annular groove 20 in the heating chamber 1 heat up simultaneously. Because the lower heating wire 21 has a higher density, it can specifically raise the temperature near the nozzle body 2. The heat is quickly transferred to the lower part of the glue tank 6 and the area of ​​the spiral conveyor rod 14 through the oxygen-free copper heat-conducting layer 11. The aluminum silicate fiber reinforced ceramic composite insulation layer 12 reduces heat loss, so that the interior of the heating chamber 1 heats up quickly. At the same time, the glue tank 6 is replenished with glue through the glue inlet pipe 5 at the upper end, and enters the heating chamber 1 through the flange sealing connection to wait for delivery. After the motor 4 is started, it drives the rotating shaft 10 to rotate through the coupling, and the conical transmission... Inside the housing 9, bevel gear 15 and bevel gear 2 mesh to drive the rotating rod 17 and the spiral conveying rod 14 to rotate. The spiral conveying rod 14 pushes and stirs the adhesive, ensuring it makes full contact with the heat-conducting layer 11. This, combined with the upper and lower heating wires, prevents uneven local temperatures. Temperature sensors 22 at the upper and lower ends of the heating chamber 1 monitor the temperature in real time and feed it back to the control system, automatically adjusting the power of the heating wires. Heating wire 21 prioritizes ensuring temperature stability near the nozzle body 2. Finally, the uniformly heated and stirred adhesive is pushed to the bottom of the heating chamber 1 and dispensing is completed through the nozzle body 2.

[0019] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A nozzle heating device for a dispensing machine, comprising a heating chamber (1) and a glue tank (6), characterized in that, A fixing plate (3) is fixedly installed on the outside of the heating chamber (1), a motor (4) is fixedly installed on the upper end of the fixing plate (3), a fixing column (13) is fixedly installed inside the heating chamber (1), a conical transmission box (9) is fixedly installed at one end of the fixing column (13), and a stirring and conveying device is provided inside the heating chamber (1). The stirring and conveying device includes a rotating shaft (10), a first bevel gear (15), a rotating rod (17), a second bevel gear (16), and a spiral conveying rod (14). The output end of the motor (4) passes through the heating chamber (1) and is connected to the rotating shaft (10) via a coupling. The first bevel gear (15) is mounted on the rotating shaft (10). The first bevel gear (15) is rotatably mounted in the conical transmission box (9). The top of the conical transmission box (9) is rotatably mounted on the rotating rod (17). The second bevel gear (16) is mounted on the rotating rod (17). The first bevel gear (15) and the second bevel gear (16) mesh with each other. One end of the rotating rod (17) passes through the conical transmission box (9) and is fixedly connected downward to the spiral conveying rod (14).

2. The nozzle heating device for a dispensing machine according to claim 1, characterized in that, The upper end of the heating chamber (1) is fixedly installed with flange two (8), and flange one (7) is connected to flange two (8).

3. The nozzle heating device for a dispensing machine according to claim 2, characterized in that, The flange (7) is fixedly installed in the middle of the glue tank (6), and the body of the glue tank (6) located below the flange (7) is installed in the heating chamber (1).

4. The nozzle heating device for a dispensing machine according to claim 1, characterized in that, Temperature sensors (22) are provided at both the upper and lower ends of the heating chamber (1), and a nozzle body (2) is provided at the bottom of the heating chamber (1).

5. The nozzle heating device for a dispensing machine according to claim 1, characterized in that, The heating chamber (1) is composed of a heat insulation layer (12) and a heat-conducting layer (11). The heat-conducting layer (11) is made of oxygen-free copper, and the heat insulation layer (12) is made of aluminum silicate fiber reinforced ceramic composite material.

6. The nozzle heating device for a dispensing machine according to claim 5, characterized in that, The heat-conducting layer (11) and the heat insulation layer (12) are provided with annular groove 1 (18) and annular groove 2 (20) at their upper and lower ends on opposite sides. Heating wire 1 (19) and heating wire 2 (21) are provided in annular groove 1 (18) and annular groove 2 (20).

7. The nozzle heating device for a dispensing machine according to claim 6, characterized in that, The first heating wire (19) is disposed in the first annular groove (18), and the second heating wire (21) is disposed in the second annular groove (20). The density of the first heating wire (19) in the first annular groove (18) is also less than that of the second heating wire (21) in the second annular groove (20).

8. The nozzle heating device for a dispensing machine according to claim 1, characterized in that, The glue tank (6) is provided with a glue inlet pipe (5) at its upper end.

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