Drip-proof dispensing needle head

Abstract

The utility model discloses a drip-proof glue dispensing needle head which comprises a connecting cylinder, a glue groove is fixedly connected to the top end of the connecting cylinder, a cylinder wall is fixedly connected to the bottom end of the glue groove, two buttons are fixedly connected to one side of the cylinder wall, a push block is arranged on one side of each button, a plug is arranged on one side of each push block, and the plug is arranged on the other side of each button. A sliding shaft is fixedly connected to the bottom end of the chock plug, a sliding sleeve is arranged on the periphery of the sliding shaft, a taper angle is arranged at the bottom end of the sliding sleeve, and a ball core is arranged in the connecting cylinder. By means of the structure, the wrench drives the ball core to roll, the valve is a ball valve and is high in corrosion resistance and good in sealing performance, and the service life of the device is prolonged. The bottom end of the plug is fixedly connected with the sliding shaft, the two ends of the plug are provided with the push blocks, one side of each push block is fixedly connected with the spring and the pressing rod, and one side of the pressing rod is fixedly connected with the button. After the needle pushes the taper angle, the button is pressed down to drive the push block to clamp the plug, the plug blocks the glue groove, the device does not leak glue any more, and the problem that glue left on the dispensing needle is omitted is solved.

Description

Technical Field

[0001] This utility model relates to the field of dispensing needle technology, and in particular to an anti-drip dispensing needle. Background Technology

[0002] When applying glue, the amount used needs to be controlled. When applying glue to some components, a dispensing method is required, that is, using a needle to dispense a specific amount of glue to prevent the use of too much glue. Dispensing technology is crucial in precision parts, so we need a drip-proof dispensing needle.

[0003] When dispensing glue, the glue can easily cause blockage inside the needle. After dispensing stops, the residual glue can easily drip out due to the straight center of the needle, causing leakage. Leakage is difficult to clean, and the glue can contaminate the storage environment after it dries. Unused glue can also be contaminated if they come together. Glue that has dried on the needle can also clog the needle after it dries, affecting the use of the needle. Utility Model Content

[0004] The purpose of this invention is to provide a drip-proof dispensing needle. A wrench drives the ball core to roll. The valve is a ball valve, which has strong corrosion resistance and good sealing performance, extending the life of the device. A sliding shaft is fixedly connected to the bottom of the stopper. Push blocks are provided at both ends of the stopper. A spring and a pressure rod are fixedly connected to one side of the push block, and a button is fixedly connected to one side of the pressure rod. After the needle pushes the cone angle, pressing the button causes the push block to lock the stopper. The stopper blocks the glue groove, and the device no longer leaks glue, solving the problem of glue leakage left by the dispensing needle.

[0005] To achieve the above objectives, a drip-proof dispensing needle is provided, comprising a connecting cylinder, a glue groove fixedly connected to the top of the connecting cylinder, a cylinder wall fixedly connected to the bottom of the glue groove, two buttons fixedly connected to one side of the cylinder wall, a push block provided on one side of the buttons, a plug provided on one side of the push block, a sliding shaft fixedly connected to the bottom of the plug, a sliding sleeve provided around the sliding shaft, a cone angle provided at the bottom of the sliding sleeve, and a ball core provided inside the connecting cylinder.

[0006] According to the aforementioned anti-drip dispensing needle, an upper valve stem is fixedly connected to one side of the connecting cylinder, and a wrench is fixedly connected to one side of the upper valve stem.

[0007] According to the aforementioned anti-drip dispensing needle, a pressure rod is fixedly connected to one side of the button, and a spring is fixedly connected to the periphery of the pressure rod.

[0008] According to the aforementioned anti-drip dispensing needle, a conical hopper is fixedly connected to the bottom end of the cylinder wall, and a needle groove is fixedly connected to the bottom end of the conical hopper.

[0009] According to the aforementioned anti-drip dispensing needle, a base pad is fixedly connected to one side of the ball core, a filler is fixedly connected to one side of the base pad, and a compression sleeve is fixedly connected to one side of the filler.

[0010] According to the aforementioned anti-drip dispensing needle, a valve seat is provided at the bottom end of the ball core, a pressure cap is fixedly connected to one side of the valve seat, and a sealing ring is fixedly connected to the bottom end of the pressure cap.

[0011] According to the aforementioned anti-drip dispensing needle, a lower valve stem is fixedly connected to one side of the ball core, and a lower valve cover is fixedly connected to one side of the lower valve stem.

[0012] According to the aforementioned anti-drip dispensing needle, a base pad is fixedly connected to one side of the ball core, and a valve core is fixedly connected inside the ball core.

[0013] Beneficial effects:

[0014] 1. To prevent glue leakage, a valve is added to the dispensing needle of this device. A lower valve stem is fixedly connected to one side of the valve cover, a ball core is fixedly connected to one side of the lower valve stem, an upper valve stem is fixedly connected to one side of the ball core, and a wrench is fixedly connected to one side of the upper valve stem. The wrench drives the ball core to roll, opening the channel and allowing glue to pass through. This valve is a ball valve, which has strong corrosion resistance and good sealing performance, extending the life of the device.

[0015] 2. A needle groove is fixedly connected to the bottom of the cone-shaped hopper, and the needle is connected to the needle. The top of the needle is set with a cone angle, and a sliding sleeve is fixedly connected to the top of the cone angle. A plug is set at the top of the sliding sleeve, and a sliding shaft is fixedly connected to the bottom of the plug. Push blocks are set at both ends of the plug. A spring and a pressure rod are fixedly connected to one side of the push block, and a button is fixedly connected to one side of the pressure rod. After the needle pushes the cone angle, the button is pressed, which causes the push block to lock the plug. The plug blocks the glue groove, and the device no longer leaks glue, thus solving the problem of glue leakage left by the dispensing needle.

[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0018] Figure 1 A perspective view of an anti-drip dispensing needle proposed in this utility model;

[0019] Figure 2 This is a cross-sectional view of an anti-drip dispensing needle proposed in this utility model;

[0020] Figure 3 An exploded view of an anti-drip dispensing needle proposed in this utility model;

[0021] Figure 4 This is a partial cross-sectional view of an anti-drip dispensing needle proposed in this utility model.

[0022] Legend:

[0023] 1. Connecting cylinder; 2. Cylinder wall; 3. Button; 4. Conical hopper; 5. Wrench; 6. Spring; 7. Push block; 8. Pressure rod; 9. Plug; 10. Sliding shaft; 11. Sliding sleeve; 12. Cone angle; 13. Upper valve stem; 14. Ball core; 15. Lower valve stem; 16. Lower valve cover; 17. Valve seat; 18. Pressure cover; 19. Base gasket; 20. Packing; 21. Compression sleeve; 22. Sealing ring; 23. Rubber groove; 24. Needle groove; 25. Valve core. Detailed Implementation

[0024] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0025] Reference Figure 1-4 This utility model discloses a drip-proof dispensing needle, comprising a connecting cylinder 1 with a built-in ball valve. The connecting cylinder 1 is connected to a glue tube at the top and a needle at the bottom. A glue groove 23 is fixedly connected to the top of the connecting cylinder 1, and the glue groove 23 is connected to the glue tube. The glue flows entirely within the glue tube. A cylinder wall 2 is fixedly connected to the bottom of the glue groove 23. The cylinder wall 2 contains various internal structures. Two buttons 3 are fixedly connected to one side of the cylinder wall 2. The buttons 3 are push-buttons, which mainly drive a spring 6 to control a push block 7 and a plug 9. A push block 7 is provided on one side of the button 3. The push block 7 is an irregular trapezoid, longer at the top and shorter at the bottom, with the long part able to hold... The stopper 9 has a slope formed by the short and long sections to lower it. The stopper 9 is located on one side of the push block 7. The stopper 9 is a frustum that is narrow at the top and wide at the bottom. The bottom of this structure can be fixed by the stopper 9. The bottom of the stopper 9 is fixedly connected to the sliding shaft 10. The sliding sleeve 11 is provided around the sliding shaft 10. The sliding sleeve 11 slides outside the sliding shaft 10 to control the dripping of the glue in the device. The bottom of the sliding sleeve 11 is provided with a cone angle 12. The cone angle 12 integrates the dripping direction of the water. The cone angle 12 is a metal cone angle 12 that does not absorb glue. The connecting cylinder 1 is provided with a ball core 14, which is the core part of the valve.

[0026] The upper valve stem 13 is fixedly connected to one side of the connecting cylinder 1, and the wrench 5 is fixedly connected to one side of the upper valve stem 13. The upper valve stem 13 and the wrench 5 are connected. The wrench 5 and the upper valve stem 13 are in different directions, and the wrench 5 is more convenient to move in the horizontal direction.

[0027] A pressure rod 8 is fixedly connected to one side of button 3, and a spring 6 is fixedly connected to the periphery of pressure rod 8. Pressure rod 8 is responsible for driving push block 7 to squeeze plug 9, and spring 6 is responsible for springing back and popping out pressure rod 8 and push block 7.

[0028] A cone hopper 4 is fixedly connected to the bottom of the cylinder wall 2, and a needle groove 24 is fixedly connected to the bottom of the cone hopper 4. The cone hopper 4 is cone-shaped and is responsible for integrating the flow of glue to achieve the purpose of dispensing. The cone hopper 4 and the cylinder wall 2 are connected by threads for easy disassembly and cleaning. The needle groove 24 is a groove of just the right size for connecting and fixing the needle.

[0029] A bottom pad 19 is fixedly connected to one side of the ball core 14, a packing 20 is fixedly connected to one side of the bottom pad 19, and a compression sleeve 21 is fixedly connected to one side of the packing 20. The packing 20 fills the gap near the ball valve, and the compression sleeve 21 presses it tightly to seal it, preventing glue leakage from the part of the device connected to the outside.

[0030] A valve seat 17 is provided at the bottom of the ball core 14. The valve seat 17 supports the ball core 14 to prevent it from being unstable when rolling. A pressure cap 18 is fixedly connected to one side of the valve seat 17. The pressure cap 18 presses down on the entire valve seat 17 with its weight. A sealing ring 22 is fixedly connected to the bottom of the pressure cap 18. The sealing ring 22 is a hollow ring to prevent glue leakage at the connection points of various parts.

[0031] A lower valve stem 15 is fixedly connected to one side of the ball core 14, and a lower valve cover 16 is fixedly connected to one side of the lower valve stem 15. The lower valve cover 16 stabilizes the lower valve stem 15, assists its rotation, and prevents its position from shifting.

[0032] A base pad 19 is fixedly connected to one side of the ball core 14, and a valve core 25 is fixedly connected inside the ball core 14. When the valve core 25 is aligned with the glue groove 23, the glue passes through. The valve core 25 is a hollow cylindrical channel inside the ball core 14.

[0033] Working principle: When the device is in a non-drip state, the stopper 9 blocks the glue groove 23 under the action of the two push blocks 7 to prevent excess glue from dripping. When using the device, install the needle in the needle groove 24, and push the cone angle 12 on the other side of the needle to move the entire structure upward. Press the button 3, and after the push block 7 releases the sliding sleeve 11, the sliding sleeve 11 slides down on the sliding shaft 10, pushing open the pressure rod 8 and the spring 6. The sliding shaft 10 drives the stopper 9 to fall, and the glue groove 23 opens. At this time, the glue dispensing needle is in the ready-to-work state. Align the needle mounted on the needle groove 24 with the dispensing position. Operate the ball valve. In the non-operating state, the wrench 5 is horizontal. The wrench 5 rotates the upper valve stem 13 and lower valve stem 15, causing the ball core 14 to rotate. The valve core 25 inside the ball core 14 is the channel for the glue. When the wrench 5 is horizontal, the valve core 25 faces the inner wall of the device, preventing glue from passing through. During operation, pull the wrench 5 up or down. The wrench 5 rotates the upper valve stem 13 and lower valve stem 15, causing the ball core 14 to rotate the valve core 25. With valve core 25 aligned with glue tank 23, glue can pass through. When the device is working, simply open the ball valve and plug 9 for normal operation. After glue dispensing is complete, first turn wrench 5 to rotate the upper valve stem 13 and lower valve stem 15, simultaneously rotating the ball core 14 and valve core 25 to close valve core 25, preventing glue from flowing downwards. Press button 3 to invert the device; plug 9 will slide to the top of the device. After releasing button 3, push block 7 will again lock plug 9 to prevent it from falling, thus intercepting the glue a second time. Remove the needle for cleaning. In the ball valve, the sealing ring 22 is made of rubber, which is dirt-resistant and has strong sealing performance to prevent glue leakage. The clamping sleeve 21 on one side of the upper valve stem 13 is used to clamp the packing 20, and the bottom pad 19 is also used to fix the packing 20 to prevent glue from leaking from one side of the ball valve. The lower valve cover 16 is used to fix the lower valve stem 15 to enhance its service life. The pressure cover 18 supports the valve seat 17, and the valve seat 17 supports the ball core 14 and stabilizes the device. The above structure ensures the sealing and stability of the device. At this point, the glue application is completed.

[0034] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A drip-proof dispensing needle, comprising a connecting tube (1), characterized in that: The top end of the connecting cylinder (1) is fixedly connected to a glue groove (23), the bottom end of the glue groove (23) is fixedly connected to a cylinder wall (2), two buttons (3) are fixedly connected to one side of the cylinder wall (2), a push block (7) is provided on one side of the button (3), a plug (9) is provided on one side of the push block (7), a sliding shaft (10) is fixedly connected to the bottom end of the plug (9), a sliding sleeve (11) is provided around the sliding shaft (10), a cone angle (12) is provided at the bottom end of the sliding sleeve (11), and a ball core (14) is provided inside the connecting cylinder (1).

2. The anti-drip dispensing needle according to claim 1, characterized in that, The upper valve stem (13) is fixedly connected to one side of the connecting cylinder (1), and a wrench (5) is fixedly connected to one side of the upper valve stem (13).

3. The anti-drip dispensing needle according to claim 1, characterized in that, A pressure rod (8) is fixedly connected to one side of the button (3), and a spring (6) is fixedly connected to the periphery of the pressure rod (8).

4. The anti-drip dispensing needle according to claim 1, characterized in that, A conical hopper (4) is fixedly connected to the bottom end of the cylinder wall (2), and a needle groove (24) is fixedly connected to the bottom end of the conical hopper (4).

5. The anti-drip dispensing needle according to claim 1, characterized in that, A base pad (19) is fixedly connected to one side of the ball core (14), a filler (20) is fixedly connected to one side of the base pad (19), and a compression sleeve (21) is fixedly connected to one side of the filler (20).

6. The anti-drip dispensing needle according to claim 1, characterized in that, A valve seat (17) is provided at the bottom of the ball core (14), and a pressure cap (18) is fixedly connected to one side of the valve seat (17). A sealing ring (22) is fixedly connected to the bottom of the pressure cap (18).

7. The anti-drip dispensing needle according to claim 1, characterized in that, The lower valve stem (15) is fixedly connected to one side of the ball core (14), and the lower valve cover (16) is fixedly connected to one side of the lower valve stem (15).

8. The anti-drip dispensing needle according to claim 1, characterized in that, A bottom pad (19) is fixedly connected to one side of the ball core (14), and a valve core (25) is fixedly connected inside the ball core (14).

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