Stable and efficient dispensing device

Abstract

The application discloses a stable and efficient point gluing device, which comprises a valve body, a glue discharging pipe connected to a glue discharging opening of the valve body, a body, a driving cavity and a glue supplying cavity with a glue inlet channel, a glue outlet channel and a glue discharging channel arranged at two ends of the body respectively, an intermediate through hole arranged between the driving cavity and the glue supplying cavity, a plunger rod with a left end and a right end arranged in the driving cavity and the glue supplying cavity respectively, a piston disc fixed to the right end of the plunger rod and sealingly connected to the inner wall of the driving cavity, a brass guide sleeve for embedding the plunger rod arranged at the middle part of the plunger rod, a sealing ring arranged between the plunger rod and the intermediate through hole and between the glue outlet channel and the guide sleeve, a gap channel arranged between the left end of the intermediate through hole and the glue outlet channel and between the plunger rod and the body, and the gap channel arranged between the left end of the intermediate through hole and the sealing ring.

Description

Technical Field

[0001] This invention relates to the field of dispensing technology, and more particularly to a stable and efficient dispensing device. Background Technology

[0002] Dispensing, also known as gluing, coating, potting, or dripping, is a process in which electronic adhesives, oils, or other liquids are applied, potted, or dripped onto a product to achieve functions such as adhesion, encapsulation, insulation, fixation, and surface smoothing. Dispensing has a wide range of applications, from large-scale production like airplanes and ships to small-scale production like clothing and toys. With economic development, continuous product upgrades, and the expansion of application areas, the demand for dispensing and potting equipment is becoming more extensive and diversified. Industries such as automotive electronics, new energy, motors, sensors, capacitors, and ignition coils have stricter requirements, prompting continuous improvement in dispensing and potting equipment manufacturing technology and product quality, while also placing higher demands on dispensing and potting equipment itself.

[0003] If air bubbles or impurities are found in the dispensing equipment during operation, the equipment must be stopped and the operator must manually remove the air bubbles or impurities before restarting the equipment. This is not conducive to automated production line production and greatly reduces the efficiency of dispensing. Summary of the Invention

[0004] The purpose of this invention is to provide a stable and efficient dispensing device that can automatically discharge waste glue containing air bubbles or impurities in the glue inlet tube in a timely manner, and can also ensure the stability of dispensing during long-term use.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is: a stable and efficient dispensing device, comprising a glue supply mechanism and a dispensing valve, wherein the glue supply mechanism and the dispensing valve are connected by a glue inlet pipe, a bubble detection module is installed on the glue inlet pipe, a valve body is installed on the glue inlet pipe and located between the bubble detection module and the dispensing valve, the glue inlet of the valve body is connected to the glue supply mechanism through the glue inlet pipe, the glue outlet of the valve body is connected to the dispensing valve through the glue inlet pipe, and a glue outlet pipe is connected to the glue outlet of the valve body;

[0006] The valve body includes a main body, drive chambers located at both ends inside the main body, and a glue supply chamber having a glue inlet channel, a glue outlet channel, and a glue discharge channel. A central through hole is provided between the drive chamber and the glue supply chamber. The left and right ends of a plunger rod located in the central through hole are respectively located in the drive chamber and the glue supply chamber. A first gasket is installed at one end of the glue discharge channel. The left end of the plunger rod has a plunger head that can seal with the first gasket. A flange is provided near the plunger head of the plunger rod. A second gasket is installed at the end of the central through hole that communicates with the glue supply chamber, allowing the flange to make sealing contact.

[0007] The right end of the plunger rod is fixed with a piston disc that is sealed to the inner wall of the drive chamber. This piston disc is located between the left air inlet and the right air inlet. A guide sleeve for the plunger rod to be embedded is installed in the middle of the plunger rod. The guide sleeve is a brass guide sleeve. A sealing ring located between the glue outlet channel and the guide sleeve is set between the plunger rod and the middle through hole. There is a gap channel between the plunger rod and the body between the left end of the middle through hole and the glue outlet channel. The gap channel is located between the left end of the middle through hole and the sealing ring.

[0008] When the piston disc moves left and right in the drive chamber under the drive of the left or right air inlet, the plunger head of the plunger rod moves left and right in the glue supply chamber accordingly, so that the plunger head of the plunger rod contacts the first gasket or the flange of the plunger rod contacts the second gasket.

[0009] The guide sleeve includes a guide portion and a protrusion on the side surface at the left end of the guide portion. The protrusion of the guide sleeve is located in the limiting groove of the body. The plunger rod is embedded in the through hole of the guide portion. The inner wall of the through hole of the guide portion contacts the outer side of the plunger rod. The inner wall surface of the through hole of the guide portion has several small grooves along the axial direction. These small grooves are distributed circumferentially.

[0010] The following are further improvements to the above technical solution:

[0011] 1. In the above scheme, the discharge pipe is connected to a waste liquid box.

[0012] 2. In the above scheme, the left air inlet and the right air inlet are connected to a solenoid valve through a vent pipe.

[0013] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art:

[0014] 1. This invention provides a stable and efficient dispensing device that can automatically discharge waste glue containing air bubbles or impurities from the glue inlet tube in a timely manner, and continue dispensing after the waste glue is discharged. This improves dispensing efficiency while ensuring dispensing quality, thereby enhancing product processing quality and efficiency. Furthermore, the guide sleeve for embedding the plunger rod includes a guide portion and a protrusion on the side surface of the left end of the guide portion. The protrusion of this guide sleeve is located within the limiting groove of the main body. The plunger rod is embedded in the through hole of the guide portion, and the inner wall of the through hole of the guide portion contacts the outer surface of the plunger rod. The inner wall surface of the through hole has several small grooves along the axial direction. These grooves are distributed circumferentially. During the long-term repeated high-speed movement of the plunger rod, in addition to preventing the plunger rod from vibrating and causing accelerated wear of the plunger head, they can also form an air cushion to reduce the friction between the plunger rod and the guide sleeve. They can also avoid the formation of a sealing surface and a pressure difference on one side, which would cause aggravated wear on one side. Furthermore, they can provide a channel for the debris generated by wear, preventing the debris from wearing and scratching the guide sleeve and plunger rod, thus ensuring the stability of the dispensing during long-term use.

[0015] 2. The stable and efficient dispensing device of the present invention includes a bubble monitoring module comprising a housing and a base body located within the housing. The base body has a groove for embedding the dispensing tube. The dispensing tube is embedded in the groove of the base body. An ultrasonic transmitter is provided on one side of the base body located in the groove, and an ultrasonic receiver is provided on the other side. A control module is used to generate a control signal based on the information received from the bubble detection module regarding the presence or absence of bubbles in the dispensing tube, thereby driving the left or right air inlet to inject air into the drive cavity. This allows for real-time monitoring of the presence of bubbles in the dispensing tube during the dispensing process, and also enables the timely and automatic discharge of waste glue containing bubbles or impurities in the dispensing tube. Dispensing can continue after the waste glue is discharged, thus improving dispensing efficiency while ensuring dispensing quality, thereby improving the processing quality and efficiency of the product. Attached Figure Description

[0016] Appendix Figure 1 This is a schematic diagram of the stable and efficient dispensing device of the present invention;

[0017] Appendix Figure 2 This is a schematic diagram of the valve body in the stable and efficient dispensing device of the present invention;

[0018] Appendix Figure 3 This is a cross-sectional view of the valve body in one state of the stable and efficient dispensing device of the present invention;

[0019] Appendix Figure 4 This is a cross-sectional view of the valve body in another state of the stable and efficient dispensing device of the present invention;

[0020] Appendix Figure 5This is a schematic diagram of the bubble detection module in the stable and efficient dispensing device of the present invention;

[0021] Appendix Figure 6 This is a partial structural diagram of the valve body in the stable and efficient dispensing device of the present invention;

[0022] Appendix Figure 7 This is a schematic diagram of the guide sleeve in the stable and efficient dispensing device of the present invention;

[0023] Appendix Figure 8 This is the electrical schematic diagram of the stable and efficient dispensing device of the present invention.

[0024] In the attached diagrams: 1. Adhesive supply mechanism; 2. Dispensing valve; 3. Inlet pipe; 4. Bubble sensor; 5. Bubble detection module; 51. Housing; 52. Base body; 54. Groove; 55. Ultrasonic transmitter; 56. Ultrasonic receiver; 6. Valve body; 9. Discharge port; 10. Discharge pipe; 11. Body; 111. Sub-body of adhesive supply; 112. Intermediate body; 113. Sub-body of drive; 12. Drive cavity; 13. Adhesive supply cavity; 131. Inlet channel; 132. Discharge channel; 133. Discharge channel; 14. Central through hole; 15. Plunger rod; 16. First gasket; 17. Plunger head; 18. Flange; 19. Second gasket; 20. Piston disc; 21. Left air inlet; 22. Right air inlet; 23. Guide sleeve; 24. Sealing ring; 25. Gap channel; 27. Guide part; 28. Protrusion; 29. ​​Limiting groove; 30. Through hole; 31. Small groove; 33. Waste liquid box; 36. Control module. Detailed Implementation

[0025] In the description of this patent, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this patent based on the specific circumstances.

[0026] Example 1: A stable and efficient dispensing device, comprising: a glue supply mechanism 1 and a dispensing valve 2, wherein the glue supply mechanism 1 and the dispensing valve 2 are connected by a glue inlet pipe 3, characterized in that: a bubble detection module 5 is installed on the glue inlet pipe 3, a valve body 6 is installed on the glue inlet pipe 3 and located between the bubble detection module 5 and the dispensing valve 2, the glue inlet 7 of the valve body 6 is connected to the glue supply mechanism 1 through the glue inlet pipe 3, the glue outlet 8 of the valve body 6 is connected to the dispensing valve 2 through the glue inlet pipe 3, and a glue outlet pipe 10 is connected to the glue outlet 9 of the valve body 6;

[0027] The valve body 6 includes a body 11, drive chambers 12 located at both ends inside the body 11, and a glue supply chamber 13 having a glue inlet channel 131, a glue outlet channel 132, and a glue discharge channel 133. A central through hole 14 is provided between the drive chamber 12 and the glue supply chamber 13. The left and right ends of a plunger rod 15 located in the central through hole 14 are located in the drive chamber 12 and the glue supply chamber 13, respectively. A first gasket 16 is installed at one end of the glue discharge channel 133. The left end of the plunger rod 15 has a plunger head 17 that can seal with the first gasket 16. A flange portion 18 is provided near the plunger head 17 of the plunger rod 15. A second gasket 19 that can seal with the flange portion 18 is installed at one end of the central through hole 14 that communicates with the glue supply chamber 13.

[0028] The right end of the plunger rod 15 is fixed with a piston disc 20 that is sealed to the inner wall of the drive chamber 12. The piston disc 20 is located between the left air inlet 21 and the right air inlet 22. A guide sleeve 23 for the plunger rod 15 to be embedded is installed in the middle of the plunger rod 15. A sealing ring 24 located between the glue outlet channel 132 and the guide sleeve 23 is provided between the plunger rod 15 and the intermediate through hole 14. The plunger rod 15 and the body 11 have a gap channel 25 between the left end of the intermediate through hole 14 and the glue outlet channel 132.

[0029] When the piston disc 20 moves left and right in the drive chamber 12 under the drive of the left air inlet 21 or the right air inlet 22, the plunger head 17 of the plunger rod 15 moves left and right in the glue supply chamber 13 accordingly, so that the plunger head 17 of the plunger rod 15 contacts the first gasket 16 or the flange portion 18 of the plunger rod 15 contacts the second gasket 19.

[0030] The guide sleeve 23 includes a guide portion 27 and a protrusion 28 on the side surface of the left end of the guide portion 27. The protrusion 28 of the guide sleeve 23 is located in the limiting groove 29 of the body 11. The plunger rod 15 is embedded in the through hole 30 of the guide portion 27. The inner wall of the through hole 30 of the guide portion 27 is in contact with the outer side of the plunger rod 15. The inner wall surface of the through hole 30 of the guide portion 27 has a plurality of small grooves 31 along the axial direction. These plurality of small grooves 31 are distributed circumferentially.

[0031] The bubble monitoring module 5 includes a housing 51 and a base body 52 located inside the housing 51. The base body 52 has a groove 54 for inserting the glue inlet tube 3. The glue inlet tube 3 is inserted into the groove 54 of the base body 52. ​​An ultrasonic transmitter 55 is provided on one side of the base body 52 located in the groove 54, and an ultrasonic receiver 56 is provided on the other side.

[0032] A bubble sensor 4 and a control module 36 are installed near the discharge port 9 on the discharge pipe 10. The control module 36 is used to generate a control signal based on the information received from the bubble detection module 5 and the bubble sensor 4 regarding whether there are bubbles in the inlet pipe 3 or the discharge pipe 10, and drive the left air inlet 21 or the right air inlet 22 of the valve body 6 to inject air into the drive chamber 12.

[0033] The aforementioned discharge pipe 10 is connected to a waste liquid box 33; the aforementioned body 11 further includes a glue supply sub-body 111, a drive sub-body 113, and an intermediate body 112 located between the glue supply sub-body 111 and the drive sub-body 113. The aforementioned glue supply chamber 13 and glue inlet channel 131 are located within the glue supply sub-body 111, the aforementioned drive chamber 12 and glue outlet channel 132 are located within the drive sub-body 113, and the aforementioned gap channel 25 is located within the intermediate body 112.

[0034] Example 2: A stable and efficient dispensing device, comprising: a glue supply mechanism 1 and a dispensing valve 2, wherein the glue supply mechanism 1 and the dispensing valve 2 are connected by a glue inlet pipe 3, characterized in that: a bubble detection module 5 is installed on the glue inlet pipe 3, a valve body 6 is installed on the glue inlet pipe 3 and located between the bubble detection module 5 and the dispensing valve 2, the glue inlet 7 of the valve body 6 is connected to the glue supply mechanism 1 through the glue inlet pipe 3, the glue outlet 8 of the valve body 6 is connected to the dispensing valve 2 through the glue inlet pipe 3, and a glue outlet pipe 10 is connected to the glue outlet 9 of the valve body 6;

[0035] The valve body 6 includes a body 11, drive chambers 12 located at both ends inside the body 11, and a glue supply chamber 13 having a glue inlet channel 131, a glue outlet channel 132, and a glue discharge channel 133. A central through hole 14 is provided between the drive chamber 12 and the glue supply chamber 13. The left and right ends of a plunger rod 15 located in the central through hole 14 are located in the drive chamber 12 and the glue supply chamber 13, respectively. A first gasket 16 is installed at one end of the glue discharge channel 133. The left end of the plunger rod 15 has a plunger head 17 that can seal with the first gasket 16. A flange portion 18 is provided near the plunger head 17 of the plunger rod 15. A second gasket 19 that can seal with the flange portion 18 is installed at one end of the central through hole 14 that communicates with the glue supply chamber 13.

[0036] The right end of the plunger rod 15 is fixed with a piston disc 20 that is sealed to the inner wall of the drive chamber 12. The piston disc 20 is located between the left air inlet 21 and the right air inlet 22. A guide sleeve 23 for the plunger rod 15 to be embedded is installed in the middle of the plunger rod 15. A sealing ring 24 located between the glue outlet channel 132 and the guide sleeve 23 is provided between the plunger rod 15 and the intermediate through hole 14. The plunger rod 15 and the body 11 have a gap channel 25 between the left end of the intermediate through hole 14 and the glue outlet channel 132.

[0037] When the piston disc 20 moves left and right in the drive chamber 12 under the drive of the left air inlet 21 or the right air inlet 22, the plunger head 17 of the plunger rod 15 moves left and right in the glue supply chamber 13 accordingly, so that the plunger head 17 of the plunger rod 15 contacts the first gasket 16 or the flange portion 18 of the plunger rod 15 contacts the second gasket 19.

[0038] The guide sleeve 23 includes a guide portion 27 and a protrusion 28 on the side surface of the left end of the guide portion 27. The protrusion 28 of the guide sleeve 23 is located in the limiting groove 29 of the body 11. The plunger rod 15 is embedded in the through hole 30 of the guide portion 27. The inner wall of the through hole 30 of the guide portion 27 is in contact with the outer side of the plunger rod 15. The inner wall surface of the through hole 30 of the guide portion 27 has a plurality of small grooves 31 along the axial direction. These plurality of small grooves 31 are distributed circumferentially.

[0039] The aforementioned left air inlet 21 and right air inlet 22 are connected to a solenoid valve via a vent pipe; the aforementioned guide sleeve 23 is a brass guide sleeve; the aforementioned gap channel 25 is located between the left end of the intermediate through hole 14 and the sealing ring 24.

[0040] When the above-mentioned stable and efficient dispensing device is used, it can automatically discharge waste glue containing air bubbles or impurities in the glue inlet tube in a timely manner, and continue dispensing after the waste glue is discharged. While ensuring the dispensing quality, it improves the dispensing efficiency, thereby improving the processing quality and efficiency of the product.

[0041] Furthermore, the guide sleeve for embedding the plunger rod includes a guide portion and a protrusion on the side surface of the left end of the guide portion. The protrusion of this guide sleeve is located in the limiting groove of the body. The plunger rod is embedded in the through hole of the guide portion. The inner wall of the through hole of the guide portion contacts the outer side of the plunger rod. The inner wall surface of the through hole of the guide portion has several small grooves along the axial direction. These small grooves are distributed circumferentially. During the long-term repeated high-speed movement of the plunger rod, in addition to preventing the plunger rod from vibrating and causing accelerated wear of the plunger head, it can form an air cushion to reduce the friction between the plunger rod and the guide sleeve. It can also avoid the formation of a sealing surface and a single-sided pressure difference between the plunger rod and the guide sleeve, which would cause aggravated wear on one side. It can also provide a channel for the debris formed by wear, avoiding wear and scratches on the guide sleeve and the plunger rod by the debris, thereby ensuring the stability of the dispensing during long-term use.

[0042] In addition, it can monitor the presence of air bubbles in the glue inlet pipe in real time during the glue dispensing process, and can also automatically discharge waste glue containing air bubbles or impurities in the glue inlet pipe in a timely manner, and continue glue dispensing after the waste glue is discharged. While ensuring glue dispensing quality, it improves glue dispensing efficiency, thereby improving the processing quality and efficiency of products.

[0043] The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly. They should not be construed as limiting the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A stable and efficient dispensing device, comprising: A glue supply mechanism (1) and a glue dispensing valve (2) are connected by a glue inlet pipe (3). The glue supply mechanism (1) and the glue dispensing valve (2) are connected by a glue inlet pipe (3). The glue inlet pipe (3) is equipped with a bubble detection module (5). A valve body (6) is installed on the glue inlet pipe (3) and located between the bubble detection module (5) and the glue dispensing valve (2). The glue inlet (7) of the valve body (6) is connected to the glue supply mechanism (1) through the glue inlet pipe (3). The glue outlet (8) of the valve body (6) is connected to the glue dispensing valve (2) through the glue inlet pipe (3). A glue outlet pipe (10) is connected to the glue outlet (9) of the valve body (6). The valve body (6) includes a body (11), a drive chamber (12) located at both ends inside the body (11), and a glue supply chamber (13) having a glue inlet channel (131), a glue outlet channel (132), and a glue discharge channel (133). A central through hole (14) is provided between the drive chamber (12) and the glue supply chamber (13). The left and right ends of a plunger rod (15) located in the central through hole (14) are located in the drive chamber (12) and the glue supply chamber (13), respectively. A first gasket (16) is installed at one end of the glue discharge channel (133). The left end of the plunger rod (15) has a plunger head (17) that can seal with the first gasket (16). A flange (18) is provided near the plunger head (17) of the plunger rod (15). A second gasket (19) that can seal with the flange (18) is installed at one end of the central through hole (14) that communicates with the glue supply chamber (13). The right end of the plunger rod (15) is fixed with a piston disc (20) that is sealed to the inner wall of the drive chamber (12). The piston disc (20) is located between the left air inlet (21) and the right air inlet (22). A guide sleeve (23) for the plunger rod (15) to be embedded is installed in the middle of the plunger rod (15). The guide sleeve (23) is a brass guide sleeve. A sealing ring (24) located between the glue outlet channel (132) and the guide sleeve (23) is set between the plunger rod (15) and the intermediate through hole (14). The plunger rod (15) and the body (11) have a gap channel (25) between the left end of the intermediate through hole (14) and the glue outlet channel (132). The gap channel (25) is located between the left end of the intermediate through hole (14) and the sealing ring (24). When the piston disc (20) moves left and right in the drive chamber (12) under the drive of the left air inlet (21) or the right air inlet (22), the plunger head (17) of the plunger rod (15) moves left and right in the glue supply chamber (13) accordingly, so that the plunger head (17) of the plunger rod (15) contacts the first gasket (16) or the flange (18) of the plunger rod (15) contacts the second gasket (19); The guide sleeve (23) includes a guide portion (27) and a protrusion (28) on the side surface of the left end of the guide portion (27). The protrusion (28) of the guide sleeve (23) is located in the limiting groove (29) of the body (11). The plunger rod (15) is embedded in the through hole (30) of the guide portion (27). The inner wall of the through hole (30) of the guide portion (27) is in contact with the outer side of the plunger rod (15). The inner wall surface of the through hole (30) of the guide portion (27) has several small grooves (31) along the axial direction. These several small grooves (31) are distributed circumferentially.

2. The stable and efficient dispensing device according to claim 1, characterized in that: The discharge tube (10) is connected to a waste liquid box (33).

3. The stable and efficient dispensing device according to claim 1, characterized in that: The left air inlet (21) and the right air inlet (22) are connected to a solenoid valve via a vent pipe.

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