Dispensing head structure

Abstract

The utility model provides a dispensing head structure which comprises a dispensing head shell and a driving mechanism arranged at the upper end of the dispensing head shell, the dispensing head shell comprises an internal mixing cavity and an external cooling cavity, the upper end and the lower end of the internal mixing cavity are provided with a feeding port and a discharging port respectively, and the driving mechanism is arranged at the upper end of the internal mixing cavity. A stirring paddle connected with the driving mechanism is also arranged in the internal mixing cavity; and a water outlet and a water inlet are respectively formed in the upper end and the lower end of the external cooling cavity. According to the glue dispensing device, the stirring paddle is arranged in the glue dispensing shell to fully mix AB glue materials, and the stirred glue materials are rapidly cooled through the external cooling cavity, so that the full mixing speed of the glue materials is greatly increased, the mixing uniformity of the glue materials is improved, the use temperature can be rapidly reached, and the service life of the glue dispensing device is prolonged. Therefore, the production and processing efficiency is greatly improved.

Description

Technical Field

[0001] The utility model relates to the field of glue dispensing machines, in particular to a glue dispensing head structure. Background Art

[0002] At present, conventional mixing methods such as automatic feeding of equipment, static mixing, and manual mixing are usually used for two-component addition-type liquid foamed silicone rubber. The glue supply flow rate is small, which cannot adapt to large-flow production and has a low degree of automation. The ultimate goal of this mixing method is to make the two-component liquid foamed silicone rubber mix evenly, but this mixing method is limited by the viscosity of the rubber, shear force, glue supply and discharge pressure, and differences in the thixotropic behavior of the rubber. In the mixing process, uneven mixing is often prone to occur, resulting in the uniformity of the cross-sectional pores after the silicone foam is pre-cross-linked and formed, color differences over a wide area, and deviations in mechanical properties. It is not suitable for mixing with different viscosities. The poor tolerance rate leads to the mixing uniformity of the two-component rubber accompanied by viscosity fluctuations and changes in the thixotropic index of the rubber, and the uniformity of the cross-sectional pores and the poor color consistency over a wide area after foaming, which is not conducive to the processing of high-viscosity rubber.

[0003] The viscosity of the rubber is high and the fluidity is poor. The rubber is not convenient for operators to operate by static mixing or manual mixing, the production efficiency is low, and the supply outlet pressure of the feeding equipment is high. The mixing time is too long. For the two-component foamed silicone rubber, the temperature rises during the shearing process, and the rubber vulcanizes prematurely over time. The operation window is narrow, the viscosity of the rubber changes, and the fusion and uniformity cannot be met, which greatly affects the product appearance, the uniformity of the foam cells after molding, and the product performance, resulting in the quality of the product being affected during the processing. Utility Model Content

[0004] In order to solve the problem of long time and low efficiency of static mixing or manual mixing of rubber materials in the prior art, the utility model provides a dispensing head structure capable of direct dynamic mixing.

[0005] The utility model provides a glue dispensing head structure, including a glue dispensing head shell and a driving mechanism arranged at the upper end of the glue dispensing head shell, the glue dispensing head shell includes an internal mixing chamber and an external cooling chamber, the upper and lower ends of the internal mixing chamber are respectively provided with a feed port and a feed port, the internal mixing chamber is also provided with a stirring paddle connected to the driving mechanism, and the upper and lower ends of the external cooling chamber are respectively provided with a water outlet and a water inlet.

[0006] As a further improvement of the utility model, the driving mechanism includes a driving shell connected to the upper end of the internal mixing chamber and a driving motor arranged at the upper end of the driving shell. The output end of the driving motor is fixedly connected to the upper end of the stirring paddle through a rotating shaft, and a sealing structure is provided between the rotating shaft and the internal mixing chamber.

[0007] As a further improvement of the utility model, the upper end of the stirring paddle is provided with a connecting threaded hole, the lower end of the rotating shaft is provided with an external thread adapted to the connecting threaded hole, the outer periphery of the upper end of the stirring paddle is provided with a threaded guide plate, and the outer periphery of the lower end of the stirring paddle is provided with a plurality of evenly arranged tooth blades.

[0008] As a further improvement of the utility model, a coupling is provided between the output end of the driving motor and the rotating shaft.

[0009] As a further improvement of the utility model, the drive housing includes an upper shell and a lower shell, the drive motor is arranged at the upper end of the upper shell, the upper end of the lower shell is connected to the lower end of the upper shell, and the lower end of the lower shell is connected to the upper end of the dispensing head housing.

[0010] As a further improvement of the present invention, a rotary bearing is provided between the drive housing and the dispensing head housing.

[0011] As a further improvement of the present invention, the sealing structure is a sealing ring, and the sealing ring is arranged between the rotating bearing and the upper end of the internal mixing chamber.

[0012] As a further improvement of the utility model, the water inlet and the water outlet are connected through a cooling water circulation device.

[0013] The beneficial effects of the utility model are as follows: the utility model realizes the full mixing of AB rubber materials by arranging a stirring paddle in the dispensing shell, and quickly cools down the stirred rubber materials through the external cooling chamber, which greatly improves the full mixing speed of the rubber materials, improves the uniformity of the rubber material mixing, and can quickly reach the use temperature, thereby greatly improving the production and processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a cross-sectional view of a dispensing head structure of the utility model;

[0015] Figure 2 The utility model is a cross-sectional view of a stirring paddle of a dispensing head structure.

[0016] Figure markings: 1-internal mixing chamber; 2-external cooling chamber; 3-stirring paddle; 4-feeding port; 5-discharging port; 6-water inlet; 7-water outlet; 8-driving motor; 9-rotating shaft; 10-upper shell; 11-lower shell; 12-coupling; 13-rotating bearing; 14-sealing structure; 31-threaded guide vane; 32-tooth blade. DETAILED DESCRIPTION

[0017] In the description of the present invention, it should be understood that if there are descriptions involving orientation, such as orientations or positional relationships indicated by up, down, front, back, left, and right, the orientation description may be based on the orientation or positional relationships shown in the drawings. This is only for the convenience of describing the present invention and simplifying the description, and does 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, it cannot be understood as a limitation on the present invention.

[0018] In the description of the utility model, if there is a description of quantity, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of first or second, it is only used to distinguish the technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0019] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0020] like Figure 1 and Figure 2 As shown, the utility model discloses a dispensing head structure, including a dispensing head shell and a driving mechanism arranged at the upper end of the dispensing head shell, the dispensing head shell includes an internal mixing chamber 1 and an external cooling chamber 2, the upper and lower ends of the internal mixing chamber 1 are respectively provided with a feed port 4 and a discharge port 5, the feed port 4 is arranged on one side of the upper end of the internal mixing chamber 1, the internal mixing chamber 1 is also provided with a stirring paddle 3 connected to the driving mechanism, and the upper and lower ends of the external cooling chamber 2 are respectively provided with a water outlet 7 and a water inlet 6.

[0021] When the glue dispensing is working, the driving mechanism drives the stirring paddle 3 to rotate rapidly. At this time, the two-component AB glue enters the internal mixing chamber 1 through the feed port 4, and the stirring paddle 3 will fully stir the entering glue. At the same time, cooling water will flow through the water inlet 6 and the water outlet 7 in the external cooling chamber 2 to quickly cool the mixed glue in the internal mixing chamber 1 to reach the temperature required by the process. Finally, the glue flows out through the discharge port 5 and is dispensed onto the carrier.

[0022] The utility model achieves full mixing of AB rubber materials by arranging a stirring paddle 3 in the dispensing shell, and quickly cools down the stirred rubber materials through the external cooling chamber 2, which greatly improves the full mixing speed of the rubber materials, improves the uniformity of the rubber material mixing, and can quickly reach the use temperature, thereby greatly improving the production and processing efficiency.

[0023] In the present technical solution, the driving mechanism includes a driving shell connected to the upper end of the internal mixing chamber 1 and a driving motor 8 arranged at the upper end of the driving shell. The output end of the driving motor 8 is fixedly connected to the upper end of the stirring paddle 3 through a rotating shaft 9. A sealing structure 14 is provided between the rotating shaft 9 and the internal mixing chamber 1. The driving motor 8 is arranged at the upper end and connected to the stirring paddle 3 through the rotating shaft 9. It does not take up too much space, has a more reasonable layout, and has a simple structure, which is convenient for daily maintenance and has a low manufacturing cost.

[0024] In the technical solution, the upper end of the stirring paddle 3 is provided with a connecting threaded hole, the lower end of the rotating shaft 9 is provided with an external thread adapted to the connecting threaded hole, the outer periphery of the upper end of the stirring paddle 3 is provided with a threaded guide plate 31, and the outer periphery of the lower end of the stirring paddle 3 is provided with a plurality of uniformly arranged tooth blades 32. The stirring paddle 3 and the rotating shaft 9 are threadedly connected, which is more convenient for disassembly and assembly. The outer periphery of the upper end of the stirring paddle 3 is provided with a threaded guide plate 31, which can guide the rubber material to the lower end and fully stir it through a plurality of uniformly arranged tooth blades 32.

[0025] In the present technical solution, a coupling 12 is provided between the output end of the driving motor 8 and the rotating shaft 9 to facilitate the connection of the rotating shaft 9 .

[0026] In the present technical solution, the driving shell includes an upper shell 10 and a lower shell 11, the driving motor 8 is arranged at the upper end of the upper shell 10, the upper end of the lower shell 11 is connected to the lower end of the upper shell 10, and the lower end of the lower shell 11 is connected to the upper end of the dispensing head shell. By setting the upper shell 10 and the lower shell 11, disassembly and assembly can be facilitated.

[0027] In the technical solution, a rotating bearing 13 is provided between the driving housing and the dispensing head housing, and the lower end of the rotating shaft 9 is placed in the bearing of the rotating shaft 9 to ensure smooth and stable rotation of the rotating shaft 9.

[0028] In the present technical solution, the sealing structure 14 is a sealing ring, which is arranged between the rotating bearing 13 and the upper end of the internal mixing chamber 1 to play a sealing role and prevent the rubber from entering the driving housing.

[0029] In the present technical solution, the water inlet 6 is connected to the water outlet 7 via a cooling water circulation device, which saves the use of cooling water and is more energy-saving and environmentally friendly.

[0030] The utility model changes the conventional static mixing and manual mixing methods into dynamic mixing to achieve uniform mixing of two-component AB glue with a large flow rate, improves the uniformity of the mixed rubber, ensures the uniformity of the bubbles during the rubber processing and molding process, and improves production efficiency. This structure is simple, convenient for daily maintenance, low cost and high efficiency.

[0031] The two-component dynamic mixing of this dispensing head structure is suitable for mixing various formulas with different viscosities and has good versatility.

[0032] The above contents are further detailed descriptions of the present invention in combination with specific preferred implementations, and the specific implementation of the present invention cannot be considered to be limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.

Claims

1. A dispensing head structure, characterized in that: It includes a dispensing head shell and a driving mechanism arranged at the upper end of the dispensing head shell, the dispensing head shell includes an internal mixing chamber and an external cooling chamber, the upper and lower ends of the internal mixing chamber are respectively provided with a feed port and a discharge port, the internal mixing chamber is also provided with a stirring paddle connected to the driving mechanism, and the upper and lower ends of the external cooling chamber are respectively provided with a water outlet and a water inlet.

2. The dispensing head structure according to claim 1, characterized in that: The driving mechanism includes a driving shell connected to the upper end of the internal mixing chamber and a driving motor arranged at the upper end of the driving shell. The output end of the driving motor is fixedly connected to the upper end of the stirring paddle through a rotating shaft. A sealing structure is provided between the rotating shaft and the internal mixing chamber.

3. The dispensing head structure according to claim 2, characterized in that: The upper end of the stirring paddle is provided with a connecting threaded hole, the lower end of the rotating shaft is provided with an external thread adapted to the connecting threaded hole, the outer periphery of the upper end of the stirring paddle is provided with a threaded guide plate, and the outer periphery of the lower end of the stirring paddle is provided with a plurality of uniformly arranged tooth blades.

4. The dispensing head structure according to claim 2, characterized in that: A coupling is provided between the output end of the driving motor and the rotating shaft.

5. The dispensing head structure according to claim 2, characterized in that: The driving housing comprises an upper housing and a lower housing, the driving motor is arranged at the upper end of the upper housing, the upper end of the lower housing is connected to the lower end of the upper housing, and the lower end of the lower housing is connected to the upper end of the dispensing head housing.

6. The dispensing head structure according to claim 2, characterized in that: A rotary bearing is provided between the driving housing and the dispensing head housing.

7. The dispensing head structure according to claim 6, characterized in that: The sealing structure is a sealing ring, and the sealing ring is arranged between the rotating bearing and the upper end of the internal mixing cavity.

8. The dispensing head structure according to claim 1, characterized in that: The water inlet is communicated with the water outlet through a cooling water circulation device.

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