Glue dispensing head with quantitative glue discharging function and glue dispensing machine

Abstract

The utility model relates to a dispensing head with a quantitative glue discharging function and a dispensing machine, and belongs to the technical field of dispensing machines, the dispensing head comprises a glue barrel, a top cover, a glue discharging pipe and a piston movably arranged in the glue barrel, the glue barrel comprises a metering section and a glue discharging section, the glue discharging section is fixed at the bottom of the metering section, and a sealing plate is fixed in the glue discharging section. Quantitative glue storage can be achieved, a large amount of glue can be stably fed at a time, the glue dispensing efficiency can be greatly improved, meanwhile, a sealing plate is arranged at the position, located on the upper portion of a glue outlet pipe, in the glue dispensing head, in the process that a sealing block on the sealing plate abuts against the surface of a groove of the sealing plate under the action of elastic force, negative pressure can be formed in a glue outlet section, and under the action of the negative pressure, the glue can be stably discharged. And glue in the glue outlet pipe is not easy to drop.

Description

Technical Field

[0001] The present application relates to the technical field of glue dispensing machines, and in particular to a glue dispensing head and a glue dispensing machine with a quantitative glue dispensing function. Background Art

[0002] In order to ensure a firm connection between the workpiece and the wiring harness, it is usually necessary to use a dispensing device to dispense glue at the connection point between the workpiece and the wiring harness. In order to ensure a good fixing effect between the wiring harness and the workpiece, quantitative glue dispensing is often required.

[0003] The prior art dispensing equipment generally uses a flow meter to dispense glue in a quantitative manner. The flow meter dispenses glue in a quantitative manner, which has a low glue dispensing efficiency and easily leaves colloid residues in the nozzle accessories. The residual glue will drip onto the working panel or workpiece and is difficult to clean. Utility Model Content

[0004] The purpose of the present application is to provide a glue dispensing head and a glue dispensing machine with a quantitative glue dispensing function to solve the problems raised in the above background technology.

[0005] In order to achieve the above-mentioned purpose, the present application provides a dispensing head and a dispensing machine with a quantitative glue dispensing function, which adopt the following technical solution.

[0006] On the one hand, the present application provides a dispensing head with a quantitative dispensing function, which adopts the following technical solution:

[0007] A dispensing head with a quantitative glue dispensing function, comprising a glue cylinder, a top cover, a glue dispensing tube and a piston movably arranged in the glue cylinder, the glue cylinder comprising a metering section and a glue dispensing section, the glue dispensing section being fixed at the bottom of the metering section, a sealing plate being fixed in the glue dispensing section, through holes being provided on the sealing plate and the piston, grooves being provided at positions corresponding to the through holes on the bottom end surfaces of the sealing plate and the piston, a plurality of boring holes being provided around the groove, a spring being fixed in the boring hole, a sealing block being fixed at the other end of the spring, and the sealing block being able to abut against the surface of the groove;

[0008] The top cover and the rubber outlet pipe are respectively fixed at the two ends of the rubber cylinder, the rubber outlet pipe is fixed at the bottom of the rubber outlet section, a rubber inlet is provided on the surface of the top cover, a one-way valve is installed in the rubber inlet, a clearance hole is provided in the middle of the top cover, a push rod is passed through the clearance hole, one end of the push rod is fixed to the piston, and multiple sealing rings are arranged between the clearance hole and the push rod.

[0009] The inner wall of the clearance hole is provided with a plurality of annular grooves, and a V-shaped sealing ring is arranged in the annular groove.

[0010] An annular groove is provided on the side wall of the piston, and an O-shaped sealing ring is provided in the annular groove.

[0011] Preferably, in order to facilitate production, the glue outlet section is threadedly screwed to the bottom of the metering section, and a sealing gasket is provided between the glue outlet section and the metering section.

[0012] On the other hand, the present application also provides a glue dispensing machine equipped with the above-mentioned glue dispensing head with quantitative glue dispensing function, which adopts the following technical solution:

[0013] A glue dispensing machine comprises a three-axis CNC platform, the glue cylinder is fixed on the three-axis CNC platform, the glue cylinder is externally connected to a glue storage tank, a diaphragm pump and a flow meter are connected between the glue storage tank and the glue cylinder, and a cylinder is also installed on the three-axis CNC platform, a connecting rod is fixed to the end of the output rod of the cylinder, and the connecting rod is fixed to the push rod.

[0014] To sum up, the present application includes at least one of the following beneficial technical effects: the dispensing head with quantitative glue dispensing function can realize quantitative glue storage, and can dispense glue in large quantities and smoothly at one time, which can greatly improve the dispensing efficiency. At the same time, a sealing plate is provided on the upper part of the glue outlet pipe in the dispensing head. When the sealing block on the sealing plate is pressed against the surface of the sealing plate groove under the action of elastic force, negative pressure can be formed inside the glue outlet section. Under the action of the negative pressure, the glue in the glue outlet pipe is not easy to drip. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram used to reflect the dispensing head in the embodiment of the present application.

[0016] Figure 2 It is a schematic diagram of the explosion structure of the dispensing head in the embodiment of the present application.

[0017] Figure 3 It is a schematic diagram of the cross-sectional structure of the dispensing head in the embodiment of the present application.

[0018] Figure 4 yes Figure 3 Enlarged view of part A in the middle.

[0019] Figure 5 yes Figure 3 Enlarged view of part B in the middle.

[0020] Figure 6 It is a structural schematic diagram used to reflect the dispensing machine in the embodiment of the present application.

[0021] Explanation of the reference numerals in the accompanying drawings: 1. Rubber cylinder; 11. Metering section; 12. Glue outlet section; 2. Top cover; 21. Glue inlet; 22. One-way valve; 23. Make way hole; 3. Glue outlet pipe; 4. Piston; 41. Ring groove; 5. Sealing plate; 51. Through hole; 52. Groove; 53. Stuffing hole; 54. Spring; 55. Sealing block; 6. Push rod; 7. Three-axis CNC platform; 8. Flow meter; 9. Cylinder; 91. Connecting rod. DETAILED DESCRIPTION

[0022] The following is combined with Figure 1-6 This application is described in further detail.

[0023] The present application embodiment discloses a dispensing head with a quantitative dispensing function, referring to Figure 1-5 , comprising a rubber cylinder 1, a top cover 2, a rubber outlet pipe 3 and a piston 4 movably arranged in the rubber cylinder 1, the rubber cylinder 1 comprising a metering section 11 and a rubber outlet section 12, the rubber outlet section 12 is fixed at the bottom of the metering section 11, a sealing plate 5 is fixed in the rubber outlet section 12, a through hole 51 is provided on the sealing plate 5 and the piston 4, a groove 52 is provided on the bottom end surface of the sealing plate 5 and the piston 4 at a position corresponding to the through hole 51, a plurality of boring holes 53 are provided around the groove 52, a spring 54 is fixed in the boring hole 53, a sealing block 55 is fixed at the other end of the spring 54, and the sealing block 55 can abut against the surface of the groove 52;

[0024] The top cover 2 and the rubber outlet pipe 3 are respectively fixed at the two ends of the rubber cylinder 1, and the rubber outlet pipe 3 is fixed at the bottom of the rubber outlet section 12. A rubber inlet 21 is provided on the surface of the top cover 2, and a one-way valve 22 is installed in the rubber inlet 21. A clearance hole 23 is provided in the middle of the top cover 2, and a push rod 6 is passed through the clearance hole 23. One end of the push rod 6 is fixed to the piston 4. A plurality of sealing rings are arranged between the clearance hole 23 and the push rod 6. A plurality of annular grooves are provided on the inner wall of the clearance hole 23, and a V-shaped sealing ring (not shown in the figure) is arranged in the annular groove. A ring groove 41 is provided on the side wall of the piston 4, and an O-ring (not shown in the figure) is arranged in the ring groove 41.

[0025] Reference Figure 2 and Figure 3 In order to facilitate production, the glue outlet section 12 is screwed to the bottom of the metering section 11, and a sealing gasket is provided between the glue outlet section 12 and the metering section 11.

[0026] The implementation principle of a dispensing head and a dispensing machine with a quantitative dispensing function in the embodiment of the present application is as follows:

[0027] A fixed amount of glue can be stored in the rubber cylinder 1. When the piston 4 is driven to move upward by an external force, the sealing block 55 on the sealing plate 5 is pressed against the surface of the groove 52 of the sealing plate 5 under the action of elastic force (at this time, a negative pressure can be formed inside the glue outlet section 12. Under the action of this negative pressure, the glue in the glue outlet pipe 3 is not easy to drip). The sealing block 55 on the piston 4 will be pressed open by the glue on the upper part of the piston 4, and the glue will enter the bottom cavity of the piston 4 from the gap between the sealing block 55 and the groove 52. When the piston 4 moves to the top cover 2, the gluing action is completed. Thereafter, the piston 4 moves downward by the driving of an external force. The sealing block 55 on the piston 4 is pressed against the piston 4 under the action of the glue pressure and elastic force, and the sealing block 55 on the sealing plate 5 is squeezed open by the glue. The glue is dispensed through the glue outlet pipe 3. The one-time glue output is large and the glue feeding is relatively stable.

[0028] The present application also discloses a dispensing machine equipped with the above-mentioned dispensing head with quantitative dispensing function, referring to Figure 6 , including a three-axis CNC platform 7, a rubber cylinder 1 is fixed on the three-axis CNC platform 7, the rubber cylinder 1 is externally connected to a rubber storage tank, a diaphragm pump and a flow meter 8 are connected between the rubber storage tank and the rubber cylinder 1, and a cylinder 9 is also installed on the three-axis CNC platform 7, a connecting rod 91 is fixed to the end of the output rod of the cylinder 9, and the connecting rod 91 is fixed to the push rod 6.

[0029] The workpiece is placed on the three-axis CNC platform 7. When the cylinder 9 pushes the piston 4 downward to perform glue dispensing, the diaphragm pump and the flowmeter 8 work to input a certain amount of glue from the glue inlet 21 on the top cover 2 into the glue cylinder 1. After the glue dispensing is completed, when the cylinder 9 drives the piston 4 to reset, the sealing block 55 on the piston 4 will be pressed open by the glue on the upper part of the piston 4, and the glue enters the bottom cavity of the piston 4 from the gap between the sealing block 55 and the groove 52. When the piston 4 moves to the top cover 2, the gluing action is completed. When dispensing glue, only the cylinder 9 needs to drive the push rod 6 to move downward. The sealing block 55 on the piston 4 is pressed against the piston 4 under the action of the glue pressure and elastic force, and the sealing block 55 on the sealing plate 5 is squeezed open by the glue. The glue is dispensed through the glue outlet pipe 3, the one-time glue output is large, and the glue supply is relatively stable.

[0030] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, principle and application direction of the present application should be included in the protection scope of the present application.

Claims

1. A dispensing head with a quantitative dispensing function, characterized in that: The invention comprises a rubber cylinder (1), a top cover (2), a rubber outlet pipe (3) and a piston (4) movably arranged in the rubber cylinder (1), wherein the rubber cylinder (1) comprises a metering section (11) and a rubber outlet section (12), wherein the rubber outlet section (12) is fixed at the bottom of the metering section (11), a sealing plate (5) is fixed in the rubber outlet section (12), a through hole (51) is provided on the sealing plate (5) and the piston (4), a groove (52) is provided on the bottom end surface of the sealing plate (5) and the piston (4) at a position corresponding to the through hole (51), a plurality of boring holes (53) are provided around the groove (52), a spring (54) is fixed in the boring hole (53), a sealing block (55) is fixed at the other end of the spring (54), and the sealing block (55) can abut against the surface of the groove (52). The top cover (2) and the rubber outlet pipe (3) are respectively fixed to the two ends of the rubber cylinder (1); the rubber outlet pipe (3) is fixed to the bottom of the rubber outlet section (12); a rubber inlet (21) is provided on the surface of the top cover (2); a one-way valve (22) is installed in the rubber inlet (21); a clearance hole (23) is provided in the middle of the top cover (2); a push rod (6) is passed through the clearance hole (23); one end of the push rod (6) is fixed to the piston (4); and a plurality of sealing rings are provided between the clearance hole (23) and the push rod (6).

2. The dispensing head with quantitative glue dispensing function according to claim 1, characterized in that: The inner wall of the clearance hole (23) is provided with a plurality of annular grooves, and a V-shaped sealing ring is arranged in the annular groove.

3. The dispensing head with quantitative dispensing function according to claim 2, characterized in that: An annular groove (41) is provided on the side wall of the piston (4), and an O-shaped sealing ring is provided in the annular groove (41).

4. The dispensing head with quantitative dispensing function according to claim 3 is characterized in that: The glue outlet section (12) is threadedly connected to the bottom of the metering section (11), and a sealing gasket is provided between the glue outlet section (12) and the metering section (11).

5. A glue dispensing machine equipped with a glue dispensing head with a quantitative glue dispensing function as claimed in claim 4, comprising a three-axis CNC platform (7), characterized in that: The rubber cylinder (1) is fixed on a three-axis numerical control platform (7); the rubber cylinder (1) is externally connected to a rubber storage tank; a diaphragm pump and a flow meter (8) are connected between the rubber storage tank and the rubber cylinder (1); a cylinder (9) is also installed on the three-axis numerical control platform (7); a connecting rod (91) is fixed to the end of the output rod of the cylinder (9); and the connecting rod (91) is fixed to the push rod (6).

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