Double feed port plunger pump device

Abstract

The present invention provides a full vacuum plunger pump device, comprising a base, a drive motor mounted on the base, and a plunger pump component driven by the drive motor, the plunger pump component comprising a cylinder body, a plunger rod, a first feed port, and a discharge port, the drive motor being connected to the plunger rod via a transmission device, the plunger pump component further comprising a second feed port, the second feed port being arranged at the other end of the cylinder body opposite to the first feed port. The technical solution provided by the present invention improves and optimizes the feeding device of a traditional vacuum glue dispensing machine, so that it can ensure that the plunger pump can be effectively filled with high-viscosity glue under full vacuum conditions without leaving any gaps, thereby realizing precise control of the glue dispensing machine over the discharge of high-viscosity glue.

Description

Technical Field

[0001] The present invention relates to the technical field of vacuum glue dispensing machines, in particular to a double-feed port plunger pump device for vacuum glue dispensing machines. Background Art

[0002] For glue dispensing machines, the feeding device (glue feeding equipment) is its core component. The performance of the feeding device directly affects or determines the overall working performance of the glue dispensing machine. Traditional feeding devices include gear pumps and plunger pumps. Generally speaking, plunger pumps have higher glue dispensing accuracy than gear pumps and are easier to control. However, they are not suitable for glues with higher viscosity.

[0003] In the field of electronic device manufacturing, most glue dispensing machines are required to be free of bubbles in the glue, otherwise it will greatly affect the performance of the finished electronic devices, and some products may even be directly scrapped due to bubbles in the glue. Therefore, in the prior art, the glue supply barrel is first vacuumed to ensure that the glue in the barrel, glue feeding pipe, feed port, and even the feeding device does not contain bubbles during the glue feeding process. This is partial vacuum feeding, and it places high demands on the sealing of the entire feeding system. Even so, since the vacuum degree of the vacuum drawn in advance will continue to decrease over time, it is difficult to prevent gas from mixing in during the working process and generate bubbles in the glue discharged. In addition, it takes some time to vacuum in advance, generally about an hour, and the glue discharge operation cannot be performed during this period, which directly affects the rhythm of glue dispensing.

[0004] Therefore, for glue with high viscosity (very viscous), in order to obtain high glue supply accuracy, when using a traditional plunger pump, it will be difficult to suck the glue into the plunger pump, and the glue will often not be fully sucked. This will in turn make it impossible to guarantee the control of glue discharge accuracy. Summary of the Invention

[0005] In order to solve the problem that when a plunger pump is used in the prior art to supply viscous glue, the plunger pump often fails to absorb enough glue, resulting in an inability to guarantee glue discharge accuracy, the present invention provides a full-vacuum double-feed port plunger pump device, so as to achieve the goal of ensuring that bubble defects will not appear in the target product of the glue-filled product while ensuring precise control of glue discharge accuracy for viscous glue using a plunger pump under a full vacuum state.

[0006] To achieve the purpose of the present invention, the technical solution adopted by the present invention is: a full vacuum plunger pump device, including a base, a drive motor installed on the base and a plunger pump component driven by the drive motor, the plunger pump component including a cylinder body, a plunger rod, a first feed port and a discharge port, the drive motor is connected to the plunger rod through a transmission device, the plunger pump component also includes a second feed port, and the second feed port is arranged at the other end of the cylinder body opposite to the first feed port.

[0007] A first feed actuator is installed at the first feed port, a discharge actuator is installed at the discharge port, and a second feed actuator is installed at the second feed port.

[0008] Preferably, the first feeding actuator and the second feeding actuator have the same structure, both comprising a feeding cylinder and a feeding push rod, wherein the feeding cylinder and the feeding push rod are connected via a feeding floating joint.

[0009] Correspondingly, the discharging actuator includes a discharging cylinder and a discharging ejector rod, wherein the discharging cylinder and the discharging ejector rod are connected via a discharging floating joint.

[0010] Furthermore, the transmission device includes a transmission screw connected to the drive motor, a guide rail fixed to the base, and a transmission slider that slides with the guide rail and is threadedly engaged with the transmission screw.

[0011] More preferably, the drive motor is connected to the transmission screw through a reducer and a coupling.

[0012] Specifically, the transmission screw is connected to the plunger rod.

[0013] Furthermore, the plunger pump component also includes a sealing kit.

[0014] Most preferably, the first feed port and the second feed port are respectively arranged on both sides of the discharge port.

[0015] Compared with the existing technology, the technical solution provided by the present invention adds a feed port, and the first feed port and the second feed port form a communicating vessel through the plunger pump cylinder. The communicating vessel principle can ensure that the plunger pump can be easily filled with high-viscosity glue under full vacuum working conditions.

[0016] The full vacuum state described in this article refers to a working condition in which the box and barrel of the glue dispensing machine are continuously evacuated during the glue dispensing process to ensure that the box, barrel, plunger pump and other parts are all in a vacuum state. In this way, the glue can be continuously supplied at a high vacuum degree to prevent air from mixing into the glue and generating bubbles. In addition, it also saves the time of glue dispensing and improves work efficiency.

[0017] The technical solution provided by the present invention improves and optimizes the feeding device of the traditional vacuum glue filling machine, so that it can ensure that the plunger pump can be effectively filled with high-viscosity glue under full vacuum conditions without leaving any gaps, thereby realizing the glue filling machine's precise control of the discharge of high-viscosity glue. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1Schematic diagram of the three-dimensional structure of an embodiment of the present invention;

[0019] Figure 2 for Figure 1 A schematic longitudinal cross-sectional view along the top direction;

[0020] Figure 3 This is a schematic diagram of the three-dimensional structure of the feed actuator in a cutaway state according to an embodiment of the present invention;

[0021] Figure 4 This is a schematic diagram of the three-dimensional structure of the discharging actuator in a cutaway state according to an embodiment of the present invention. DETAILED DESCRIPTION

[0022] In order to more clearly illustrate the technical solution of the present invention, the embodiments of the present invention will be briefly described below in conjunction with the accompanying drawings. Obviously, the description of the embodiments and the accompanying drawings is only for illustrating the technical solution of the present invention. In the context that ordinary technicians in this field can understand, the scope of protection of the present invention is not limited to the embodiments and the accompanying drawings.

[0023] like Figure 1-2 As shown, a full vacuum plunger pump device includes a base 1, a drive motor 2 installed on the base 1 and a plunger pump component 3 driven by the drive motor 2, the plunger pump component 3 includes a cylinder 31, a plunger rod 32, a first feed port 33 and a discharge port 34, the plunger pump component 3 also includes a second feed port 35, the second feed port 35 is arranged on the other end of the cylinder 31 opposite to the first feed port 33, the first feed port 33 is equipped with a first feed actuator 5, the discharge port 34 is equipped with a discharge actuator 6, the second feed port 35 is equipped with a second feed actuator 7, the first feed actuator 5 and the second feed actuator 7 have the same structure, as shown in FIG. Figure 3 As shown, both include a feeding cylinder 51 and a feeding push rod 52 , wherein the feeding cylinder 51 and the feeding push rod 52 are connected via a feeding floating joint 54 .

[0024] like Figure 4 As shown, the discharging actuator 6 includes a discharging cylinder 61 and a discharging ejector rod 62 , wherein the discharging cylinder 61 and the discharging ejector rod 62 are connected via a discharging floating joint 64 .

[0025] The drive motor 2 is connected to the plunger rod 32 through a transmission device 4, and the transmission device 4 includes a transmission screw 41 connected to the drive motor 2, a guide rail 42 fixed on the base 1, and a transmission slider 43 that slides with the guide rail 42 and is threadedly engaged with the transmission screw 41. The drive motor 2 is connected to the transmission screw 41 through a reducer and a coupling, and the transmission screw 41 is connected to the plunger rod 32.

[0026] In order to ensure the sealing performance, the plunger pump component 3 further includes a sealing kit 36 ​​.

[0027] The first feed port 33 and the second feed port 35 are respectively arranged on both sides of the discharge port 34. Such a design can ensure that the plunger pump cylinder is more easily filled with glue with high viscosity.

[0028] In the glue feeding state, the first feed actuator 5 and the second feed actuator 7 are simultaneously opened, the discharging actuator 6 is closed, and the drive motor 2 drives the transmission screw 41 to retreat, and at the same time drives the plunger rod 32 to retreat. At this time, the cylinder body 31 with feed ports at both ends forms a communicating vessel, and the cylinder body 31 is filled with glue by feeding from the two feed ports simultaneously. In the glue discharging state, the first feed actuator 5 and the second feed actuator 7 are simultaneously closed, and the discharging actuator 6 is opened. The drive motor 2 drives the transmission screw 41 forward, and at the same time drives the plunger rod 32 forward, so that the glue in the cylinder body 31 is pushed out of the discharge port 34, and the glue feeding operation is carried out.

[0029] The above embodiments are only used to illustrate the technical solutions of the present invention and should not be considered as limiting the scope of protection of the present invention. However, the present invention is mainly aimed at the field of vacuum glue filling machine manufacturing.

Claims

1. A full vacuum plunger pump device, comprising a base, a drive motor mounted on the base, and a plunger pump component driven by the drive motor, wherein the plunger pump component comprises a cylinder, a plunger rod, a first feed port, and a discharge port, wherein the drive motor is connected to the plunger rod via a transmission device, characterized in that: The plunger pump component also includes a second feed port, which is arranged at the other end of the cylinder body opposite to the first feed port, a first feed actuator is installed at the first feed port, a discharge actuator is installed at the discharge port, and a second feed actuator is installed at the second feed port. The first feed actuator and the second feed actuator have the same structure and both include a feed cylinder and a feed push rod, wherein the feed cylinder and the feed push rod are connected by a feed floating joint, and the discharge actuator includes a discharge cylinder and a discharge push rod, wherein the discharge cylinder and the discharge push rod are connected by a discharge The first feed port and the second feed port are respectively arranged on both sides of the discharge port. The first feed port and the second feed port form a communicating vessel through the plunger pump cylinder. The communicating vessel principle can ensure that the plunger pump is easily filled with high-viscosity glue under full vacuum working state. The full vacuum working state refers to a working condition in which the glue filling machine case and the barrel are continuously evacuated during the glue filling process to ensure that the case, the barrel and the plunger pump are all in a vacuum state. In this way, the glue can be continuously supplied at a relatively high vacuum degree to prevent air from mixing into the glue and generating bubbles.

2. The full vacuum plunger pump device according to claim 1, characterized in that: The transmission device includes a transmission screw connected to the drive motor, a guide rail fixed on the base, and a transmission slider that slides with the guide rail and is threadedly engaged with the transmission screw.

3. The full vacuum plunger pump device according to claim 2, characterized in that: The driving motor is connected to the transmission screw through a reducer and a coupling.

4. The full vacuum plunger pump device according to claim 3, characterized in that: The transmission screw is connected to the plunger rod.

5. The full vacuum plunger pump device according to any one of claims 1 to 4, characterized in that: The plunger pump assembly also includes a seal kit.

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