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CN-224221825-U - Dispensing valve and dispensing device

CN224221825UCN 224221825 UCN224221825 UCN 224221825UCN-224221825-U

Abstract

The utility model relates to the technical field of dispensing equipment, and discloses a dispensing valve and a dispensing device. The dispensing valve comprises a valve body and a valve rod, wherein the valve body comprises a valve rod channel, a glue inlet channel and a dispensing channel which are communicated, the valve rod can move in the valve rod channel, an adjusting cavity positioned in the valve rod channel is formed between the free end of the valve rod and the valve rod channel, and the size of the adjusting cavity is adjusted through movement of the valve rod in the valve rod channel. The glue dispensing device comprises a rubber tube and a glue dispensing valve, and the rubber tube is communicated with a glue inlet channel of the glue dispensing valve. The utility model solves the problems of delay of the glue outlet of the glue dispensing channel when the valve rod is lifted and the problem of glue dripping of the glue dispensing channel after the glue dispensing is finished, and simultaneously, delays the solidification speed of glue liquid in the glue dispensing valve, prolongs the service life of the glue dispensing valve and prolongs the glue dispensing time.

Inventors

  • TIAN YUMING

Assignees

  • 江苏立讯机器人有限公司

Dates

Publication Date
20260512
Application Date
20250523

Claims (17)

  1. 1. The dispensing valve is characterized by comprising a valve body (1) and a valve rod (2); the valve body (1) comprises a valve rod channel (11), a glue inlet channel (12) and a glue dispensing channel (13) which are communicated with each other; The valve rod (2) can move in the valve rod channel (11), an adjusting cavity (111) positioned in the valve rod channel (11) is formed between the free end of the valve rod (2) and the valve rod channel (11), and the size of the adjusting cavity (111) is adjusted through the movement of the valve rod (2) in the valve rod channel (11).
  2. 2. Dispensing valve according to claim 1, characterized in that the valve body (1) comprises a shell (101) and a lining (102), wherein the lining (102) is installed in the shell (101), the lining (102) is provided with a through inner cavity, the free end of the lining (102) and the shell (101) form the adjusting cavity (111), and the inner cavity of the lining (102) is communicated with the adjusting cavity (111) to form the valve rod channel (11).
  3. 3. Dispensing valve according to claim 2, characterized in that the free end of the liner (102) is flush or above the upper edge of the glue outlet (124) of the glue inlet channel (12).
  4. 4. Dispensing valve according to claim 2, characterized in that the diameter D1 of the valve stem (2) is 1/5~3/5 of the outer diameter D2 of the liner (102).
  5. 5. Dispensing valve according to claim 1 or 2, characterized in that when the valve stem (2) protrudes into the adjusting chamber (111), a gap is provided between the valve stem (2) and the adjusting chamber (111).
  6. 6. Dispensing valve according to claim 1 or 2, characterized in that the valve stem channel (11) comprises a sealing contact section (112), an end of the sealing contact section (112) being in communication with the adjusting chamber (111), and the sealing contact section (112) being in sliding sealing engagement with the valve stem (2).
  7. 7. Dispensing valve according to claim 6, characterized in that the valve stem channel (11) further comprises a non-sealing contact section (113) communicating with the other end of the sealing contact section (112), the inner wall of the non-sealing contact section (113) having a gap with the valve stem (2).
  8. 8. Dispensing valve according to claim 7, characterized in that the non-sealing contact section (113) is at least partially conical or stepped.
  9. 9. The dispensing valve of claim 7, wherein the non-sealing contact section (113) comprises a straight section (1131) and a tapered section (1132) in communication, one end of the tapered section (1132) is in communication with the sealing contact section (112), and the other end of the tapered section (1132) is in communication with the straight section (1131).
  10. 10. Dispensing valve according to claim 1 or 2, characterized in that a dispensing needle (3) is mounted in the dispensing passage (13), one end of the dispensing needle (3) close to the adjusting cavity (111) is a sealing part (31), one end of the valve rod (2) close to the adjusting cavity (111) is a sealing part (21), and the sealing part (21) is in sealing contact with the sealing part (31).
  11. 11. Dispensing valve according to claim 10, characterized in that the stop (21) is conical or circular arc shaped.
  12. 12. Dispensing valve according to claim 10, characterized in that the diameter D3 of the dispensing needle (3) is 1/2-1 of the diameter D1 of the valve stem (2).
  13. 13. Dispensing valve according to claim 1 or 2, characterized in that the end of the adjusting chamber (111) close to the dispensing channel (13) is conical or circular arc-shaped.
  14. 14. Dispensing valve according to claim 1 or 2, characterized in that the glue inlet channel (12) comprises a conical first glue inlet section (121) and a straight second glue inlet section (122), one end of the second glue inlet section (122) is communicated with the adjusting cavity (111), the other end is communicated with the first glue inlet section (121), and the length L2 of the second glue inlet section (122) is 1/5~3/5 of the length L1 of the first glue inlet section (121).
  15. 15. Dispensing valve according to claim 1 or 2, characterized in that the valve stem (2) comprises at least a stem parallel section (22) and a stem conical section (23) connected.
  16. 16. Dispensing valve according to claim 1 or 2, characterized in that the diameter D1 of the valve stem (2) is 1/5~3/5 of the diameter D4 of the regulating chamber (111).
  17. 17. Dispensing device comprising a rubber tube, characterized in that it further comprises a dispensing valve according to any one of claims 1-16, said rubber tube being in communication with a glue inlet channel (12) of said dispensing valve.

Description

Dispensing valve and dispensing device Technical Field The utility model relates to the technical field of dispensing equipment, in particular to a dispensing valve and a dispensing device. Background In the product processing process, it is often necessary to use multi-component glue to spot glue the parts to be processed. For example, the AB glue dispensing device uses AB glue to bond two parts, the AB glue used by the AB glue dispensing device comprises A glue and B glue, before the AB glue dispensing device is used, the A glue and the B glue are separated, when the AB glue dispensing device is used, the A glue and the B glue are respectively injected into a glue mixing pipe to be mixed, after the AB glue is uniformly mixed, the AB glue is injected into a glue dispensing valve, and glue is dispensed to a part to be bonded of the parts through a glue dispensing needle. In the related art, the dispensing valve comprises a valve body and a valve rod, wherein a valve rod channel is arranged in the valve body, one side of the valve rod channel is communicated with the glue injection channel, the bottom end of the valve rod channel is communicated with the glue injection channel, the valve rod is movably arranged in the valve rod channel, the lower end of the valve rod is provided with a valve block, the diameter of the valve block is the same as the inner diameter of the valve rod channel, and the valve block can be matched with a glue sealing part at the upper end of the glue injection channel so as to realize the communication and the shutoff of the glue injection channel and the glue injection channel. However, the dispensing valve has the following problems that 1, when dispensing is needed, the valve rod is moved upwards from the sealing part to the dispensing position, and a vacuum area is generated between the bottom of the valve rod and the dispensing channel in the lifting process of the valve rod. And 2, when the dispensing is finished, the valve rod is pressed down from the dispensing position to the sealing position, and more glue is stored between the dispensing position and the sealing position, the valve rod is pressed down to enable the glue to drop out of the dispensing channel again, namely, more glue drops are generated at the outlet of the dispensing channel after the dispensing is finished, thereby affecting the dispensing effect and even causing product rejection. Therefore, there is a need for a dispensing valve and a dispensing device to solve the above-mentioned problems. Disclosure of utility model Based on the above, the utility model aims to provide a dispensing valve and a dispensing device, which can solve the problem that a dispensing passage is delayed in dispensing when a valve rod is lifted, and the problem that the dispensing passage is dispensed after dispensing is completed. To achieve the purpose, the utility model adopts the following technical scheme: In one aspect, the utility model provides a dispensing valve comprising a valve body and a valve rod; the valve body comprises a valve rod channel, a glue inlet channel and a glue dispensing channel which are communicated with each other; The valve rod can move in the valve rod channel, an adjusting cavity positioned in the valve rod channel is formed between the free end of the valve rod and the valve rod channel, and the size of the adjusting cavity is adjusted through the movement of the valve rod in the valve rod channel. In some possible embodiments, the valve body comprises a shell and a lining, wherein the lining is installed in the shell, the lining is provided with a through inner cavity, the adjusting cavity is formed between the free end of the lining and the shell, and the inner cavity is communicated with the adjusting cavity to form the valve rod channel. In some possible embodiments, the free end of the liner is flush or above the upper edge of the glue outlet of the glue channel. In some possible embodiments, the diameter D1 of the valve stem is 1/5~3/5 of the outer diameter D2 of the liner. In some possible embodiments, when the valve stem extends into the adjustment chamber, there is a gap between the valve stem and the adjustment chamber. In some possible implementations, the valve stem passageway includes a sealing contact section, one end of which communicates with the adjustment chamber, and which slidingly and sealingly engages the valve stem. In some possible embodiments, the valve stem passageway further comprises a non-sealing contact section in communication with the other end of the sealing contact section, the non-sealing contact section having a gap between an inner wall of the non-sealing contact section and the valve stem. In some possible embodiments, the non-sealing contact section is at least partially tapered or stepped. In some possible embodiments, the non-sealing contact section comprises a straight section and a tapered section in communication, one end of the tapered section being i