Glue metering device

Abstract

The utility model relates to the technical field of dispensing machine metering, in particular to a glue metering device which comprises a base station, an air valve assembly assembled at the bottom of the base station, an electric valve assembly assembled at the top of the base station and a piston cabin arranged on the base station and between the air valve assembly and the electric valve assembly. The two groups of three-way valves are arranged on the base, the two groups of three-way valves are arranged at the rear ends of the three-way valves and are respectively communicated with the two groups of three-way valves, and the pneumatic actuator is arranged between the two groups of three-way valves and is used for controlling the three-way valves to be opened / closed. Glue is pumped into the metering cabin from the three-way valve through an external glue supply pump, the metering piston rod is driven by the glue entering the metering cabin to move upwards in the piston cabin, when the metering piston rod moves to the electric valve assembly, the metering piston rod stops moving, and the electric valve assembly pushes the metering piston rod to move downwards in the piston cabin. Therefore, the glue in the metering cabin is pushed out.

Description

Technical Field

[0001] The invention relates to the technical field of glue dispensing machine metering, in particular to a glue metering device. Background Art

[0002] With the innovation of science and technology and the needs of social development, the requirements for production processes in industrial production are becoming more and more stringent. The use of glue in industrial production has also put forward high requirements accordingly. The diversity of glue varieties in the market has resulted in the diversity of glue application range and application conditions. Therefore, equipment such as glue dispensing machines need to focus on multi-functional design. The metering and distribution system is an indispensable component of many glue dispensing machines. Glue dispensing machines have high requirements for glue dosage accuracy. The traditional manual quantitative processing method cannot meet the needs of continuous production and cannot guarantee the accuracy of the glue amount. Therefore, a glue metering device is needed. Summary of the invention

[0003] In view of the above-mentioned shortcomings of the prior art, an object of the present invention is to provide a glue metering device for solving the problem of glue quantitative measurement during glue dispensing in the prior art.

[0004] To achieve the above objectives and other related objectives, the present invention provides the following technical solutions:

[0005] A glue metering device comprises a base, an air valve assembly mounted on the bottom of the base, an electric valve assembly mounted on the top of the base, and a piston chamber disposed on the base and between the air valve assembly and the electric valve assembly;

[0006] The gas valve assembly includes two groups of three-way valves symmetrically arranged on the base, two groups of material counting cabins arranged at the rear end of the three-way valves and respectively connected to the two groups of three-way valves, and a pneumatic actuator arranged between the two groups of three-way valves to control the opening / closing of the three-way valves, a material counting piston rod is slidably connected in the material counting cabin, and the movable space of the material counting piston rod is located in the piston cabin;

[0007] The electric valve assembly pushes the material metering piston rod to move downward in the piston chamber.

[0008] To implement the above technical solution, an air valve assembly is set to control the glue flow switch, and the glue flow is controlled in cooperation with the electric valve assembly to achieve glue metering. In the initial state, the pneumatic actuator controls the feed end of the three-way valve to open, and the glue is pumped from the three-way valve into the metering cabin through an external glue feed pump. At that time, the metering piston rod moves upward in the piston cabin driven by the glue entering the metering cabin, and stops when the metering piston rod moves to the electric valve assembly. At that time, the pneumatic actuator controls the feed end of the three-way valve to close, and the discharge end to open, and the electric valve assembly pushes the metering piston rod to move downward in the piston cabin, thereby pushing the glue in the metering cabin out, completing a metering action, and the above actions can be repeated subsequently.

[0009] In one embodiment of the present invention, the electric valve assembly includes an electric valve pump and an electric valve piston rod arranged at the movable end of the electric valve pump. The electric valve piston rod moves up and down in the piston chamber driven by the electric valve pump. The electric valve piston rod is arranged on the same central axis as the material measuring piston rod.

[0010] To implement the above technical solution, after the material counting piston rod moves to the electric valve piston rod and presses against the electric valve piston rod, the electric valve pump drives the electric valve piston rod to move downward in the piston chamber. When it moves to the minimum stroke of the material counting piston rod, the valve pump drives the electric valve piston rod to move upward in the piston chamber to restore the initial state. The electric valve piston rod and the material counting piston rod are arranged on the same central axis, which can ensure the matching stability between the electric valve piston rod and the material counting piston rod.

[0011] In one embodiment of the present invention, a top head is provided at the front end of the electric valve piston rod, an electric valve base is provided between the fixed end of the electric valve pump and the piston chamber, and the electric valve base is a right-angle base.

[0012] To implement the above technical solution, the setting of the top head can avoid hard damage between the electric valve piston rod and the material measuring piston rod during use. The electric valve base is a right-angle base, and the two right-angle sides are respectively connected to the piston cabin and the base to ensure the stability of the fixed end of the electric valve pump.

[0013] In one embodiment of the present invention, the bottom of the piston chamber is spaced apart from the material measuring chamber, and a material measuring sealing seat is provided in the space, and the material measuring piston rod passes through the material measuring sealing seat.

[0014] To implement the above technical solution, by providing a metering sealing seat, the sealing stability of the metering cabin during use can be ensured, and the interval between the bottom of the piston cabin and the metering cabin can be convenient for the maintenance of the piston cabin and the metering cabin.

[0015] In one embodiment of the present invention, a feed port and a discharge port are provided on the three-way valve, a feed port is provided at the bottom of the material metering cabin, the feed port is connected to the three-way valve between the feed port and the discharge port, the feed port is externally connected to a source material pipeline, and the discharge port is externally connected to a discharge pipeline.

[0016] To implement the above technical solution, the raw materials are input into the material metering cabin through the external source material pipeline connected to the feed port, and the discharge port can conveniently discharge the measured glue to the next process end.

[0017] In one embodiment of the present invention, a material counting box wrapping the two groups of material counting chambers is provided between the two groups of material counting chambers and the two groups of three-way valves. The rear end of the material counting box is spaced apart from the base, and a material box support block is provided in the spacing space.

[0018] To implement the above technical solution, in order to ensure the reliability and stability of the cooperation between the material counting piston rod and the electric valve piston rod, the rear end of the material counting box is spaced apart from the base, and a material box support block is provided in the interval space, thereby making the cooperation between the material counting piston rod and the electric valve piston rod more stable.

[0019] As described above, a glue metering device of the present invention has the following beneficial effects: by setting an air valve assembly to control the glue flow switch, and cooperating with the electric valve assembly to control the glue flow rate, glue metering is achieved. In the initial state, the pneumatic actuator controls the feed end of the three-way valve to open, and the glue is pumped into the metering cabin from the three-way valve through an external glue feed pump. At that time, the metering piston rod moves upward in the piston cabin driven by the glue entering the metering cabin, and stops when the metering piston rod moves to the electric valve assembly. At that time, the pneumatic actuator controls the feed end of the three-way valve to close, and the discharge end to open, and the electric valve assembly pushes the metering piston rod to move downward in the piston cabin, thereby pushing the glue in the metering cabin out, completing a metering action, and the above actions can be repeated subsequently. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Shown is a schematic structural diagram of a glue metering device disclosed in an embodiment of the present invention.

[0021] Figure 2 Shown is a schematic diagram of the structure of a pneumatic actuator of a glue metering device disclosed in an embodiment of the present invention.

[0022] Figure 3 Shown is a schematic diagram of the structure of a material box support block of a glue metering device disclosed in an embodiment of the present invention.

[0023] Component number description

[0024] 1. Base; 2. Piston chamber; 3. Three-way valve; 4. Material metering chamber; 5. Pneumatic actuator; 6. Material metering piston rod; 7. Electric valve pump; 8. Electric valve piston rod; 9. Ejector head; 10. Electric valve base; 11. Material metering sealing seat; 12. Material inlet; 13. Material outlet; 14. Material metering box; 15. Material box support block. DETAILED DESCRIPTION

[0025] The following specific embodiments illustrate the implementation of the present invention, and those familiar with the technology can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0026] See also Figures 1 to 3The present invention provides a glue metering device, including a base 1, an air valve assembly mounted on the bottom of the base 1 and an electric valve assembly mounted on the top of the base 1, and a piston chamber 2 arranged on the base 1 and between the air valve assembly and the electric valve assembly. The air valve assembly includes two groups of three-way valves 3 symmetrically arranged on the base 1, two groups of material measuring chambers 4 arranged at the rear ends of the three-way valves 3 and respectively connected to the two groups of three-way valves 3, and a pneumatic actuator 5 arranged between the two groups of three-way valves 3 for controlling the opening / closing of the three-way valves 3. A material measuring piston rod 6 is slidably connected in the material measuring chamber 4, and the activity space of the material measuring piston rod 6 is located in the piston chamber 2. The electric valve assembly pushes the material measuring piston rod 6 to move downward in the piston chamber 2.

[0027] By setting the air valve assembly to control the glue flow switch and cooperating with the electric valve assembly to control the glue flow rate, glue metering is achieved. In the initial state, the pneumatic actuator 5 controls the feed end of the three-way valve 3 to open, and the glue is pumped from the three-way valve 3 into the metering cabin 4 through the external glue feeding pump. At that time, the metering piston rod 6 moves upward in the piston cabin 2 under the drive of the glue entering the metering cabin 4, and stops when the metering piston rod 6 moves to the electric valve assembly. At that time, the pneumatic actuator 5 controls the feed end of the three-way valve 3 to close, and the discharge end to open, and the electric valve assembly pushes the metering piston rod 6 to move downward in the piston cabin 2, thereby pushing out the glue in the metering cabin 4, completing a metering action, and the above actions can be repeated subsequently.

[0028] The electric valve assembly includes an electric valve pump 7 and an electric valve piston rod 8 arranged at the movable end of the electric valve pump 7. The electric valve piston rod 8 is driven by the electric valve pump 7 to move up and down in the piston chamber 2. The electric valve piston rod 8 is arranged on the same central axis as the material counting piston rod 6. After the material counting piston rod 6 moves to the electric valve piston rod 8 and supports the electric valve piston rod 8, the electric valve pump 7 drives the electric valve piston rod 8 to move downward in the piston chamber 2. When it moves to the minimum stroke of the material counting piston rod 6, the valve pump drives the electric valve piston rod 8 to move upward in the piston chamber 2 to restore the initial state. The electric valve piston rod 8 is arranged on the same central axis as the material counting piston rod 6, which can ensure the matching stability between the electric valve piston rod 8 and the material counting piston rod 6.

[0029] A top head 9 is provided at the front end of the electric valve piston rod 8, and an electric valve base 10 is provided between the fixed end of the electric valve pump 7 and the piston cabin 2. The electric valve base 10 is a right-angle base. The setting of the top head 9 can avoid hard damage between the electric valve piston rod 8 and the material measuring piston rod 6 during use. The electric valve base 10 is a right-angle base, and the two right-angle sides are respectively connected to the piston cabin 2 and the base 1 to ensure the stability of the fixed end of the electric valve pump 7.

[0030] The bottom of the piston chamber 2 and the material measuring chamber 4 are spaced apart, and a material measuring sealing seat 11 is provided in the spacing space, and the material measuring piston rod 6 passes through the material measuring sealing seat 11. By providing the material measuring sealing seat 11, the sealing stability of the material measuring chamber 4 during use can be ensured, and the bottom of the piston chamber 2 and the material measuring chamber 4 are spaced apart, which can facilitate the maintenance of the piston chamber 2 and the material measuring chamber 4.

[0031] The three-way valve 3 is provided with a feed port 12 and a discharge port 13, and the bottom of the material measuring chamber 4 is provided with a feed port, which is connected to the three-way valve 3 between the feed port 12 and the discharge port 13. The feed port 12 is externally connected to a source material pipeline, and the discharge port 13 is externally connected to a discharge pipeline. The raw materials are input into the material measuring chamber 4 through the feed port 12 connected to the source material pipeline, and the discharge port 13 can conveniently discharge the measured glue to the next process end.

[0032] A material metering box 14 is provided between the two groups of material metering cabins 4 and the two groups of three-way valves 3, and the rear end of the material metering box 14 is spaced apart from the base 1, and a material box support block 15 is provided in the spacing space. In order to ensure the reliability and stability of the cooperation between the material metering piston rod 6 and the electric valve piston rod 8, the rear end of the material metering box 14 is spaced apart from the base 1, and a material box support block 15 is provided in the spacing space, so that the cooperation between the material metering piston rod 6 and the electric valve piston rod 8 is more stable.

[0033] The present invention realizes glue metering by setting an air valve assembly to control the glue flow switch, and cooperates with the electric valve assembly to control the glue flow rate. In the initial state, the pneumatic actuator controls the feed end of the three-way valve to open, and the glue is pumped into the metering cabin from the three-way valve through an external glue feeding pump. At this time, the metering piston rod moves upward in the piston cabin driven by the glue entering the metering cabin, and stops when the metering piston rod moves to the electric valve assembly. At this time, the pneumatic actuator controls the feed end of the three-way valve to close, and the discharge end to open, and the electric valve assembly pushes the metering piston rod to move downward in the piston cabin, thereby pushing the glue in the metering cabin out, completing a metering action, and the above actions can be repeated subsequently.

[0034] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. All equivalent modifications or changes made by those skilled in the art without departing from the spirit and technical ideas disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A glue metering device, characterized in that: It includes a base, an air valve assembly mounted on the bottom of the base, an electric valve assembly mounted on the top of the base, and a piston chamber disposed on the base and between the air valve assembly and the electric valve assembly; The gas valve assembly includes two groups of three-way valves symmetrically arranged on the base, two groups of material counting cabins arranged at the rear end of the three-way valves and respectively connected to the two groups of three-way valves, and a pneumatic actuator arranged between the two groups of three-way valves to control the opening / closing of the three-way valves, a material counting piston rod is slidably connected in the material counting cabin, and the movable space of the material counting piston rod is located in the piston cabin; The electric valve assembly pushes the material metering piston rod to move downward in the piston chamber.

2. The glue metering device according to claim 1, characterized in that: The electric valve assembly includes an electric valve pump and an electric valve piston rod arranged at the movable end of the electric valve pump. The electric valve piston rod moves up and down in the piston chamber driven by the electric valve pump. The electric valve piston rod and the material metering piston rod are arranged on the same central axis.

3. The glue metering device according to claim 2, characterized in that: A top is arranged at the front end of the electric valve piston rod, an electric valve base is arranged between the fixed end of the electric valve pump and the piston chamber, and the electric valve base is a right-angle base.

4. The glue metering device according to claim 1, characterized in that: The bottom of the piston chamber is spaced apart from the material counting chamber, and a material counting sealing seat is arranged in the spaced apart space, and the material counting piston rod passes through the material counting sealing seat.

5. The glue metering device according to claim 1, characterized in that: The three-way valve is provided with a feed port and a discharge port, the bottom of the material metering cabin is provided with a feed port, the feed port is connected to the three-way valve between the feed port and the discharge port, the feed port is externally connected to a source material pipeline, and the discharge port is externally connected to a discharge pipeline.

6. The glue metering device according to claim 1, characterized in that: A material counting box wrapping the two groups of material counting chambers is arranged between the two groups of material counting chambers and the two groups of three-way valves. The rear end of the material counting box is spaced apart from the base, and a material box support block is arranged in the spacing space.

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