Novel pneumatic dispensing machine

Abstract

The utility model discloses a novel pneumatic dispensing machine which comprises a glue storage column, a glue storage inner cavity is formed in the glue storage column, a glue outlet communicated with the glue storage inner cavity is formed in the lower end face of the glue storage column, a sliding piston is arranged at the upper end of the glue storage inner cavity, and a glue outlet communicated with the glue storage inner cavity is formed in the lower end face of the glue storage column. The sliding piston slides up and down through an air cylinder fixed to the glue storage column, a glue outlet rod is fixedly arranged on the lower end face of the sliding piston through a horizontal fixing plate, and glue in the glue storage inner cavity is extruded out of the glue outlet through the glue outlet rod under the action of the air cylinder. According to the device, the glue outlet rod moves downwards for fixed displacement to extrude glue so as to achieve accurate output of the glue outlet amount, an electric control device does not need to be additionally used for control, the manufacturing cost of the whole device is reduced, and the applicability is wider.

Description

Technical Field

[0001] This utility model relates to the field of dispensing equipment technology, specifically to a novel pneumatic dispensing machine. Background Technology

[0002] Glue is frequently used in industrial production, requiring high efficiency and precise dispensing rates. To address this, various types of equipment have been designed. Among them, the pneumatic dispensing machine is a common, simple, and practical option.

[0003] A pneumatic dispensing machine is designed for resin-based adhesives with relatively poor flowability. If the adhesive has excellent flowability, like water, it cannot be used. The dispensing section of a pneumatic dispensing machine is structured like a syringe cylinder. The adhesive is pre-placed in this cylinder, but instead of a piston, an air tube connects to a compressed air source. An electrical device controls the pressure and duration of the compressed air entering the cylinder. Theoretically, each activation of the compressed air control device dispenses a specific amount of adhesive. As long as the compressed air pressure and timing are precisely controlled, the dispensing volume will also be precise.

[0004] However, due to the friction between the glue and the inner wall, the glue dispensing volume of this type of pneumatic dispensing machine is unstable. The patent number CN219850433U, named a pneumatic dispensing machine, uses the pressure of gas to achieve precise glue output, but in actual use, it needs to be equipped with an electrical control system for precise control, which increases the manufacturing cost of the entire device. Utility Model Content

[0005] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide a novel pneumatic dispensing machine.

[0006] According to the technical solution provided in the embodiments of this application, a novel pneumatic dispensing machine includes a glue storage column, a glue storage cavity inside the glue storage column, a glue outlet communicating with the glue storage cavity on the lower end face of the glue storage column, a sliding piston on the upper end of the glue storage cavity, the sliding piston sliding up and down by a cylinder fixed on the glue storage column, and a glue dispensing rod fixed on the lower end face of the sliding piston by a horizontal fixing plate, the glue in the glue storage cavity being squeezed out from the glue outlet through the glue dispensing rod under the action of the cylinder.

[0007] Furthermore, the lower part of the glue reservoir has a tapered structure that is wider at the top and narrower at the bottom, which facilitates the flow of glue to the glue outlet.

[0008] Furthermore, the glue outlet includes a cylindrical glue column and a conical glue nozzle. The conical glue nozzle is fixedly connected to the glue storage column through the cylindrical glue column to facilitate the inflow of glue. At the same time, the conical glue nozzle is set to prevent the glue from flowing out due to its own reasons. Also, because of the viscosity of the glue, when the inner diameter of the conical glue nozzle reaches a certain value, it can overcome the gravity of the glue and prevent the glue from flowing out.

[0009] Furthermore, a limiting plate is provided at the upper end of the rubber storage cavity. The limiting plate is located below the sliding piston to restrict the downward displacement of the sliding piston.

[0010] Furthermore, the dispensing rod is slidably connected to the limiting plate via a protrusion, thus ensuring the stability of the dispensing rod's up-and-down sliding motion.

[0011] Furthermore, an inlet is provided on the side end face of the glue storage column to facilitate glue injection.

[0012] In summary, the beneficial effects of this application are as follows: The device utilizes the downward displacement of the dispensing rod to compress the glue, achieving precise glue output without the need for additional electrical control devices, thus reducing the overall cost and broadening its applicability; the conical glue outlet of this application limits the movement distance of the dispensing rod and prevents glue loss due to gravity; the device includes a limiting plate within the glue storage cavity, with the dispensing rod slidably connected to the limiting plate, enabling stable movement of the dispensing rod and limiting its displacement, thereby achieving quantitative glue dispensing. Attached Figure Description

[0013] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0014] Figure 1 This is a schematic diagram of the overall device of this utility model;

[0015] Figure 2 This is a cross-sectional view of the overall device of this utility model;

[0016] The following labels are used in the diagram: Glue reservoir - 1; Glue reservoir cavity - 11; Glue inlet - 12; Glue outlet - 2; Cylindrical glue column - 21; Conical glue outlet - 22; Sliding piston - 3; Cylinder - 4; Horizontal fixed plate - 5; Glue outlet rod - 6; Limiting plate - 7. Detailed Implementation

[0017] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0018] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0019] A new type of pneumatic dispensing machine, such as Figure 1 As shown, a glue outlet 2 is provided on the lower end face of the vertically placed glue storage column 1, a glue inlet 11 is provided on the upper part of the left end face, and a cylinder 4 is fixedly provided on the upper end face.

[0020] like Figure 1 and Figure 2 As shown, the inner cavity 11 of the glue storage column 1 is connected to the glue outlet 2. The lower end of the inner cavity 11 is a cone shape that is wider at the top and narrower at the bottom. The lower end face of the inner cavity 11 is fixedly connected to the cylindrical glue column 21 on the glue outlet 2. The lower end face of the cylindrical glue column 21 is fixedly connected to the cone-shaped glue outlet 22 that is wider at the top and narrower at the bottom.

[0021] The piston rod of the cylinder 4, which is fixed to the upper end face of the glue storage column 1, passes through the upper end face of the glue storage column 1 and is fixedly connected to the sliding piston 3 located in the glue storage cavity 11. The sliding piston 3 can be disc-shaped. The side end face of the sliding piston 3 is slidably connected to the inner wall of the glue storage cavity 11. A horizontal fixing plate 5 is fixedly provided on the lower end face of the sliding piston 3 for reinforcement. A vertically placed glue dispensing rod 6 is provided on the lower end face of the horizontal fixing plate 5. The diameter of the glue dispensing rod 6 is the same as the diameter of the cylindrical glue column 21. A limiting plate 7 is fixedly provided on the glue storage cavity 11 below the sliding piston 3 for limiting the sliding piston 3.

[0022] Before use, fill the glue into the glue storage cavity 11 through the glue inlet 12. Then, due to its viscosity and gravity, the glue will slowly flow to the glue outlet 2 below the glue storage cavity 11. Due to its viscosity, it will not be discharged directly from the conical glue outlet 22.

[0023] At this time, the cylinder 4 is activated, causing the sliding piston 3 to move down with the dispensing rod 6, so that the dispensing rod 6 enters the cylindrical glue column 21 of the glue outlet 2. Since the outer diameter of the dispensing rod 6 is the same as the inner diameter of the cylindrical glue column 21, when the dispensing rod 6 enters the cylindrical glue column 21 and squeezes the glue in the glue outlet 2, the glue will not overflow into the glue storage cavity 11. Instead, the glue will be squeezed out from the conical glue outlet 22 due to the squeezing force provided by the dispensing rod 6 on the glue in the glue outlet 2, thus achieving glue dispensing.

[0024] Each time the glue dispensing rod 6 squeezes the glue, it only squeezes the glue in the glue dispensing nozzle 2, and the volume of the glue dispensing nozzle 2 does not change. Therefore, the amount of glue dispensed each time is constant.

[0025] To reduce the amount of glue overflowing from the glue outlet 2 into the glue storage cavity 11 due to the glue dispensing rod 6, a plastic piston can be fixed to the lower end face of the glue dispensing rod 6 to increase its sealing performance.

[0026] In order to maintain air pressure balance, a vent hole is provided on the upper end face of the inner cavity 11 of the glue storage in this scheme, which facilitates the up and down movement of the sliding piston 3.

[0027] The above description is merely a preferred embodiment of this application and an explanation of the technical principles and other solutions employed. Furthermore, the scope of the invention involved in this application is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above-described features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A new type of pneumatic dispenser, characterized in that: Comprising, The glue column (1) is internally provided with a glue storage cavity (11), the lower end surface of the glue column (1) is provided with a glue outlet (2) communicated with the glue storage cavity (11), the upper end part of the glue storage cavity (11) is provided with a sliding piston (3), the sliding piston (3) slides up and down through a gas cylinder (4) fixed on the glue column (1), the lower end surface of the sliding piston (3) is fixedly provided with a glue outlet rod (6) through a horizontal fixed plate (5), The glue in the glue storage cavity (11) is extruded from the glue outlet (2) under the action of the gas cylinder (4) through the glue outlet rod (6).

2. The new pneumatic dispenser according to claim 1, characterized in that: The lower end part of the glue column (1) is a tapered structure with a wide upper end and a narrow lower end.

3. The new pneumatic dispenser according to claim 2, characterized in that: The glue outlet (2) comprises a cylindrical glue column (21) and a conical glue outlet (22), and the conical glue outlet (22) is fixedly connected with the glue column (1) through the cylindrical glue column (21).

4. The new pneumatic dispenser according to claim 1, characterized in that: The upper end part of the glue storage cavity (11) is provided with a limiting plate (7), and the limiting plate (7) is located below the sliding piston (3).

5. The novel pneumatic dispenser as claimed in claim 4, wherein: The glue outlet rod (6) is slidably connected with the limiting plate (7) through a protruding block.

6. The new pneumatic dispenser according to claim 1, characterized in that: The side end surface of the glue column (1) is provided with a glue inlet (12).

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