Motor-driven dispensing mechanism

Abstract

A motor-driven dispensing mechanism comprises a liquid storage tank used for containing a glue solution, and a liquid outlet is formed in the lower portion of the liquid storage tank; a glue inlet at one end of the glue inlet pipeline is communicated with the liquid storage tank through a liquid outlet of the liquid storage tank; the motor driving assembly comprises a motor shell, a motor and a gear reducer; the motor and the gear reduction box are arranged in the motor shell from top to bottom, and a motor shaft of the motor is connected with the gear reduction box; a transmission assembly; the transmission assembly comprises a coupler and a transmission shaft; the gear reducer is connected with the upper end of the transmission shaft through a coupler; a dispensing assembly; the dispensing assembly comprises a dispensing shell, a flexible shaft, a rotor, a stator and a dispensing needle. The motor-driven dispensing mechanism disclosed by the utility model is reasonable in structural design, can realize high-precision dispensing operation, is suitable for glue solutions with wider viscosity range, and is wide in application prospect.

Description

Technical Field

[0001] The utility model relates to the technical field of glue dispensing equipment, in particular to a motor-driven glue dispensing mechanism. Background Art

[0002] Glue dispensing is a process that specifically controls fluids and drips, coats, and seals liquids on the surface or inside of products. It is mainly used for the precise dotting, pouring, coating, and dripping of glue, paint, and other liquids in product processes to the precise locations of each product, and is used to achieve dotting and line drawing. Among all manufacturing processes, the glue dispensing process not only occupies the most workers but also takes the longest working hours. If the glue dispensing work is done manually by workers, the quality of the glue dispensing cannot be guaranteed. Unqualified glue dispensing not only destroys the quality and appearance of electronic products, but also causes accidents. In order to reduce the impact of uncertain factors and cost considerations of manual operation, glue dispensing equipment has developed into an automated system, so that automated equipment gradually replaces manual operation.

[0003] With the advancement of science and technology, today's electronic products are developing towards high concentration and miniaturization. In the production and manufacturing process of highly integrated electronic products, precision dispensing, as an important technology for electronic product packaging, is particularly important for the waterproof and dustproof of products.

[0004] Therefore, the utility model designs a dispensing mechanism driven by a motor, improves the problems of insufficient precision and a small viscosity range of the applicable glue liquid in the traditional dispensing mechanism, and improves the quality and stability of dispensing. Utility Model Content

[0005] Purpose of the utility model: In order to overcome the above shortcomings, the purpose of the utility model is to provide a motor-driven dispensing mechanism with reasonable structural design, which can realize high-precision dispensing operations and is suitable for glue with a wider viscosity range and has broad application prospects.

[0006] Technical solution: A motor-driven dispensing mechanism, comprising:

[0007] A liquid storage tank, the liquid storage tank is used to hold the glue liquid, and a liquid outlet is arranged at the bottom of the liquid storage tank;

[0008] A glue inlet pipeline, wherein a glue inlet at one end of the glue inlet pipeline is connected to the liquid storage tank through a liquid outlet of the liquid storage tank;

[0009] A motor drive assembly, the motor drive assembly comprising a motor housing, a motor, and a gear reduction box; the motor and the gear reduction box are arranged inside the motor housing from top to bottom, and the motor shaft of the motor is connected to the gear reduction box;

[0010] A transmission assembly, which is arranged below the motor drive assembly; the transmission assembly includes a coupling and a transmission shaft; the gear reduction box is connected to the upper end of the transmission shaft 42 through the coupling;

[0011] A glue dispensing assembly, wherein the glue dispensing assembly is arranged below the transmission assembly; the glue dispensing assembly includes a glue dispensing shell, a flexible shaft, a rotor, a stator, and a glue dispensing needle; an inlet is arranged on one side of the upper portion of the glue dispensing shell, and the glue outlet at the other end of the glue inlet pipe is connected to the cavity inside the glue dispensing shell through the inlet of the glue dispensing shell; the flexible shaft, the rotor and the stator as well as the upper portion of the glue dispensing needle are arranged in the cavity of the glue dispensing shell from top to bottom, the lower end of the transmission shaft is connected to the upper end of the flexible shaft, the lower end of the flexible shaft is connected to the rotor, the rotor is arranged in the cavity of the stator, and the lower portion of the glue dispensing needle extends from the bottom of the glue dispensing shell.

[0012] The motor-driven glue dispensing mechanism of the utility model has a reasonable structural design and adopts a motor as a driving source. When the motor shaft of the motor rotates in the positive direction, after being decelerated and torque-increased by the gear reducer, the speed and torque are transmitted to the transmission shaft through the coupling. The transmission shaft drives the suction chamber and the discharge chamber formed by the movement of the rotor in the stator cavity to move downward through the flexible shaft, so that the glue in the glue dispensing shell cavity is transported downward along the rotor axis to the glue dispensing needle, and overcomes the internal resistance of the needle to be squeezed out from the outlet at the bottom of the glue dispensing needle to perform the glue dispensing operation; when the glue dispensing operation is completed and back-sucking is required, the motor shaft of the motor rotates in the opposite direction, so that the suction chamber and the discharge chamber formed by the movement of the rotor in the stator cavity move upward, and the glue is back-sucked, thereby realizing high-precision glue dispensing operation.

[0013] Furthermore, the above motor-driven dispensing mechanism further includes:

[0014] A sealing member is arranged between the motor housing and the dispensing housing, and the transmission assembly is arranged inside the sealing member.

[0015] By providing a seal between the motor housing and the dispensing housing, a sealing effect can be achieved to prevent the glue from leaking from the cavity of the dispensing housing to the driving part, and it also plays a role in dustproofing, beautifying and protecting the transmission components.

[0016] Furthermore, in the above-mentioned motor-driven dispensing mechanism, the motor is a DC micromotor and has a built-in incremental encoder.

[0017] Furthermore, the above motor-driven dispensing mechanism further includes:

[0018] A controller is connected to the motor.

[0019] The controller applies an electrical signal to the DC micromotor to rotate the motor shaft. During the operation of the DC micromotor, the incremental encoder performs signal detection to ensure the operation accuracy of the motor shaft and improve the accuracy of dispensing.

[0020] Furthermore, in the above-mentioned motor-driven dispensing mechanism, the transmission shaft drives the rotor through the flexible shaft, so that the rotor performs planetary motion in the stator cavity.

[0021] During the movement, the meshing parts of the rotor and the stator gradually form a suction chamber and a discharge chamber, which transport the glue liquid downward along the rotor axis to the glue dispensing needle.

[0022] Furthermore, the above motor-driven dispensing mechanism further includes:

[0023] A pressurizing component is connected to the pressurizing port of the liquid storage tank.

[0024] When the glue in the liquid storage tank has good fluidity, no pressure is required, and the self-priming ability of the motor drive component, transmission component and dispensing component can automatically realize the function of extracting the glue. However, when the glue in the liquid storage tank has high viscosity and poor fluidity, it is necessary to set a pressurizing component to apply a certain pressure to the glue in the liquid storage tank to force the glue to flow into the rotor and stator meshing chamber.

[0025] Furthermore, in the above-mentioned motor-driven dispensing mechanism, the pressurizing component comprises:

[0026] Air compressor;

[0027] A gas storage tank, wherein a pressure gauge is provided on the gas storage tank;

[0028] Filters;

[0029] A pressure regulating valve, the air compressor, the air storage tank, the filter and the pressurizing port of the liquid storage tank are connected in sequence through pipelines, and a pressure regulating valve is arranged on the pipeline between the filter and the pressurizing port of the liquid storage tank.

[0030] When the glue liquid in the liquid storage tank is highly viscous and has poor fluidity, the air compressor sucks in air and compresses it, and the compressed high-pressure gas is output to the gas storage tank for storage. The gas storage tank is connected to a pressure gauge to detect the air pressure in the gas storage tank. The air output from the gas storage tank is filtered through a filter to remove impurities and moisture, and clean, dry air is obtained. Then, it is connected to a precision pressure regulating valve through a pipeline, and the pressure regulating valve accurately adjusts the air pressure, so that the air pressure is constant and accurately provides pressure to the liquid storage tank, and accurately replenishes the glue liquid in the dispensing component. The above design allows the motor-driven dispensing mechanism to be applicable to the dispensing operation of glue liquids with a wider viscosity range.

[0031] The beneficial effects of the utility model are as follows: the motor-driven dispensing mechanism described in the utility model has a reasonable structural design, adopts a motor as a driving source, and drives the rotor to perform planetary motion inside the stator cavity after deceleration and torque increase through a gear reducer. During the operation of the motor, an incremental encoder performs signal detection to ensure the operation accuracy of the motor shaft. The air pressure is constant through a pressurizing component to accurately provide pressure to the liquid storage tank, and the glue liquid is accurately added to the dispensing component, thereby achieving high-precision dispensing operations, and is suitable for glue liquids with a wider viscosity range, and has broad application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a cross-sectional schematic diagram of the motor-driven dispensing mechanism of the utility model;

[0033] Figure 2 This is an electrical connection diagram of the motor-driven dispensing mechanism of the utility model;

[0034] Figure 3 This is a simplified connection diagram of the pressurizing component of the motor-driven dispensing mechanism of the utility model;

[0035] In the figure: liquid storage tank 1, glue inlet pipeline 2, motor drive assembly 3, motor housing 31, motor 32, gear reduction box 33, transmission assembly 4, coupling 41, transmission shaft 42, glue dispensing assembly 5, glue dispensing housing 51, flexible shaft 52, rotor 53, stator 54, glue dispensing needle 55, seal 6, controller 7, pressurizing assembly 8, air compressor 81, air storage tank 82, pressure gauge 821, filter 83, pressure regulating valve 84. DETAILED DESCRIPTION

[0036] The following is combined with Figure 1 , 2 , 3 and Example 1, Example 2, further illustrate the utility model.

[0037] Example 1

[0038] like Figure 1 , 2 As shown, the motor-driven glue dispensing mechanism described in the utility model includes a liquid storage tank 1, a glue inlet pipeline 2, a motor drive component 3, a transmission component 4, a glue dispensing component 5, a sealing component 6, and a controller 7.

[0039] Further, such as Figure 1 As shown, the motor drive assembly 3 includes a motor housing 31, a motor 32, and a gear reduction box 33. The motor 32 and the gear reduction box 33 are arranged inside the motor housing 31 from top to bottom. The motor housing 31 plays a role in dust prevention, beauty and protection for the motor 32 and the gear reduction box 33.

[0040] Further, such as Figure 1As shown, the transmission assembly 4 includes a coupling 41 and a transmission shaft 42. The dispensing assembly 5 includes a dispensing housing 51, a flexible shaft 52, a rotor 53, a stator 54, and a dispensing needle 55. The motor shaft of the motor 32 is connected to the gear reduction box 33, the gear reduction box 33 is connected to the transmission shaft 42 through the coupling 41, the transmission shaft 42 is connected to the flexible shaft 52, the flexible shaft 52 is connected to the rotor 53, and the rotor 53 is arranged in the cavity of the stator 54.

[0041] Furthermore, the liquid storage tank 1 is used to hold glue liquid, the glue inlet at one end of the glue inlet pipe 2 is connected to the liquid storage tank 1 through the liquid outlet of the liquid storage tank 1, and the glue outlet at the other end of the glue inlet pipe 2 is connected to the cavity inside the glue dispensing shell 51 through the inlet of the glue dispensing shell 51.

[0042] Further, such as Figure 2 As shown, the motor 32 is a DC micromotor and has a built-in incremental encoder, and the controller 7 is connected to the motor 32 .

[0043] like Figure 1 , 2 As shown, the working process of the motor-driven dispensing mechanism is as follows:

[0044] 1. The controller transmits the signal to the motor 32 to rotate the motor shaft of the motor 32. During the operation of the motor 32, the incremental encoder performs signal detection to ensure the operation accuracy of the motor shaft;

[0045] 2. When the motor shaft of the motor 32 rotates in the positive direction, after being decelerated and torque-increased by the gear reducer 33, the speed and torque are transmitted to the transmission shaft 42 through the coupling 41. The transmission shaft 42 drives the rotor 53 to move downward in the suction cavity and the discharge cavity formed by the planetary motion of the cavity of the stator 54 through the flexible shaft 52, so that the glue liquid flowing into the cavity of the dispensing housing 51 from the liquid storage tank 1 is transported downward along the axial direction of the rotor 53 to the dispensing needle 55, and overcomes the internal resistance of the dispensing needle 55 to be squeezed out from the outlet at the bottom of the dispensing needle 55 to perform the dispensing operation;

[0046] 3. When the dispensing operation is completed and needs to be sucked back, the motor shaft of the motor 32 rotates in the opposite direction, so that the suction cavity and the discharge cavity formed by the movement of the rotor 53 in the cavity of the stator 54 move upward, and the glue is sucked back, thereby achieving high-precision dispensing operation.

[0047] Example 2

[0048] Based on the structural basis of Example 1 above, Figure 1 , 2 , as shown in Figure 3.

[0049] The multi-stage high-performance woodworking drill and milling cutter described in the utility model also includes a pressurizing component 8. When the glue liquid contained in the liquid storage tank 1 has good fluidity, no pressure is required, and the function of extracting the glue liquid can be automatically realized through the self-priming ability of the motor drive component 3, the transmission component 4 and the glue dispensing component 5. When the glue liquid contained in the liquid storage tank 1 has high viscosity and poor fluidity, the pressurizing component 8 is set to apply a certain pressure to the glue liquid in the liquid storage tank 1, so as to promote the glue liquid to flow into the glue dispensing component 5.

[0050] Furthermore, the pressurizing component 8 includes an air compressor 81, an air tank 82, a filter 83, and a pressure regulating valve 84. When the glue liquid contained in the liquid storage tank 1 has a high viscosity and poor fluidity, the air compressor 81 sucks in air and compresses it, and the compressed high-pressure gas is output to the air storage tank 82 for storage. The air storage tank 82 is connected to a pressure gauge 821 to detect the air pressure in the air storage tank 82. The air output from the air storage tank 82 is filtered through a filter 83 to remove impurities and moisture, and clean and dry air is obtained. The air is then connected to a precise pressure regulating valve 84 through a pipeline, and the pressure regulating valve 84 accurately adjusts the air pressure, so that the air pressure is constant and accurately provides pressure to the liquid storage tank 1, and accurately replenishes the glue liquid in the dispensing component 5. The above design allows the motor-driven dispensing mechanism to be applicable to the dispensing operation of glue liquids with a wider viscosity range.

[0051] Further, such as Figure 1 As described above, by providing a seal 6 between the motor housing 31 and the glue dispensing housing 51, a sealing effect can be achieved to prevent the glue from leaking from the cavity of the glue dispensing housing 51 to the driving part, and the transmission component 4 can be dustproof, aesthetically pleasing and protective.

[0052] The above is only a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements without departing from the principle of the present invention, and these improvements should also be regarded as within the protection scope of the present invention.

Claims

1. A motor-driven dispensing mechanism, characterized in that: include: A liquid storage tank (1), the liquid storage tank (1) being used to contain glue liquid, and a liquid outlet being arranged at the bottom of the liquid storage tank (1); A glue inlet pipeline (2), wherein a glue inlet port at one end of the glue inlet pipeline (2) is connected to the liquid storage tank (1) through a liquid outlet of the liquid storage tank (1); A motor drive assembly (3), the motor drive assembly (3) comprising a motor housing (31), a motor (32), and a gear reduction box (33); the motor (32) and the gear reduction box (33) are arranged inside the motor housing (31) from top to bottom, and the motor shaft of the motor (32) is connected to the gear reduction box (33); A transmission assembly (4), the transmission assembly (4) being arranged below the motor drive assembly (3); the transmission assembly (4) comprising a coupling (41) and a transmission shaft (42); the gear reduction box (33) being connected to the upper end of the transmission shaft (42) via the coupling (41); A glue dispensing assembly (5), the glue dispensing assembly (5) being arranged below the transmission assembly (4); the glue dispensing assembly (5) comprising a glue dispensing housing (51), a flexible shaft (52), a rotor (53), a stator (54), and a glue dispensing needle (55); an inlet is arranged on one side of the upper portion of the glue dispensing housing (51); a glue outlet at the other end of the glue inlet pipe (2) is connected to a cavity inside the glue dispensing housing (51) through the inlet of the glue dispensing housing (51); the upper portions of the flexible shaft (52), the rotor (53), the stator (54), and the glue dispensing needle (55) are arranged from top to bottom in the cavity of the glue dispensing housing (51); the lower end of the transmission shaft (42) is connected to the upper end of the flexible shaft (52), the lower end of the flexible shaft (52) is connected to the rotor (53), the rotor (53) is arranged in the cavity of the stator (54), and the lower portion of the glue dispensing needle (55) extends out from the bottom of the glue dispensing housing (51).

2. The motor-driven dispensing mechanism according to claim 1, characterized in that: Also includes: A sealing member (6), wherein the sealing member (6) is arranged between the motor housing (31) and the glue dispensing housing (51), and the transmission assembly (4) is arranged inside the sealing member (6).

3. The motor-driven dispensing mechanism according to claim 1, characterized in that: The motor (32) is a DC micromotor and has a built-in incremental encoder.

4. The motor-driven dispensing mechanism according to claim 3, characterized in that: Also includes: A controller (7), wherein the controller (7) is connected to the motor (32).

5. The motor-driven dispensing mechanism according to claim 1, characterized in that: The transmission shaft (42) drives the rotor (53) via the flexible shaft (52), so that the rotor (53) performs planetary motion in the cavity of the stator (54).

6. The motor-driven dispensing mechanism according to claim 1, characterized in that: Also includes: A pressurizing component (8), wherein the pressurizing component (8) is connected to the pressurizing port of the liquid storage tank (1).

7. The motor-driven dispensing mechanism according to claim 6, characterized in that: The pressurizing component (8) comprises: Air compressor (81); An air storage tank (82), wherein the air storage tank (82) is provided with a pressure gauge (821); Filter (83); A pressure regulating valve (84), wherein the air compressor (81), the air storage tank (82), the filter (83) and the pressurizing port of the liquid storage tank (1) are connected in sequence through pipelines, and a pressure regulating valve (84) is provided on the pipeline between the filter (83) and the pressurizing port of the liquid storage tank (1).

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