Non-contact dispensing system

Abstract

The utility model discloses a non -contact type point gum system, its glue outlet of glue cylinder lower extreme communicates with the one end of glue inlet runner of glue inlet body away from glue outlet runner through a connecting pipe, the upper surface of glue inlet body and located the direct upper side of glue outlet runner is equipped with an installation hole, the lower end of the guide sleeve that can be supplied to the knock pin passes through screw thread and is installed in this installation hole, the upper end of guide sleeve is from the lower end opening of valve body and is passed into the accommodation groove of valve body, the upper part of knock pin in guide sleeve is located in the accommodation groove, the lower end of knock pin is passed into the glue outlet runner of glue inlet body and is cooperated with nozzle, and glue inlet body is connected with the lower end surface of valve body through an installation block, and the lateral surface on installation block is equipped with an installation groove for the embedding of glue inlet body. The utility model can realize the stable installation of the glue inlet body with runner inside, and can also rotate the dismounting of glue inlet body, knock pin and nozzle and does not interfere with the component structure in valve body, and high -frequency cleaning is convenient.

Description

Technical Field

[0001] This utility model relates to the field of dispensing technology, and in particular to a non-contact dispensing system. Background Technology

[0002] Dispensing systems transfer fluid of ideal size to the appropriate location on a workpiece to achieve mechanical or electrical connections between components. To meet increasingly stringent packaging requirements, dispensing technology is gradually shifting from contact dispensing to jet (non-contact) dispensing. Currently, jet dispensing is achieved through piezoelectrically driven fluid jet valves. The main structure consists of a valve body, a piezoelectric actuator housed within the valve body, an amplifier, and a flow channel assembly. The amplifier amplifies the deformation of the piezoelectric ceramic in the actuator after energization using a lever principle, transmitting this amplification to the jet pusher in the flow channel assembly, which then ejects the adhesive from the flow channel assembly. The connection between the flow channel assembly and the valve body of the piezoelectric valve often employs a detachable connection structure to facilitate cleaning and replacement of the flow channels. Existing detachable connection structures between piezoelectric valves and flow channel assemblies primarily use screws to fix the flow channel assembly to the valve body from below, which is cumbersome to disassemble and can easily damage internal structures such as the ejector pin during removal. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a non-contact dispensing system. This non-contact dispensing system can not only achieve stable installation of the dispensing body with internal flow channels, but also allow for rotational disassembly and assembly of the dispensing body, the ejector pin and the nozzle without interfering with the internal component structure of the valve body, and facilitate high-frequency cleaning.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a non-contact dispensing system, comprising: a glue supply cylinder, a valve body with an internal receiving groove, a glue inlet body with a glue inlet channel and a glue outlet channel respectively opened inside, a nozzle installed on the glue inlet body, and a striker configured to cooperate with the nozzle. The glue outlet at the lower end of the glue supply cylinder is connected to the end of the glue inlet channel on the glue inlet body away from the glue outlet channel through a connecting pipe. The lower end of the glue outlet channel, whose upper end is connected to the end of the glue inlet channel away from the glue supply cylinder, is connected to the nozzle. A first mounting hole is opened on the upper surface of the glue inlet body and directly above the glue outlet channel. The lower end of a guide sleeve through which the striker can pass is threaded into this first mounting hole. The upper end of the guide sleeve passes through the receiving groove of the valve body from the lower end opening. The upper part of the striker installed in the guide sleeve is located in the receiving groove. The lower end of the striker passes through the glue outlet channel of the glue inlet body and cooperates with the nozzle.

[0005] The glue inlet body is connected to the lower end face of the valve body via a mounting block. A mounting groove for embedding the glue inlet body is formed on the side surface of the mounting block. A second mounting hole extending horizontally is formed on the side surface of the mounting block, above or below the glue inlet body. A pin is rotatably mounted in the second mounting hole. A guide hole communicating with the second mounting hole is formed on the side wall of the mounting groove facing the glue inlet body. A limiting ball that can slide vertically between the pin and the glue inlet body is provided in the vertically extending guide hole. A first groove corresponding to the limiting ball is formed on the side surface of the glue inlet body. A second groove corresponding to the limiting ball is formed on the outer surface of the pin. When the limiting ball is outside the second groove, the limiting ball embedded in the first groove is in abutting contact with the pin.

[0006] The following are further improvements to the above technical solution:

[0007] 1. In the above scheme, the mounting block has an extension extending in the direction of the guide sleeve, and a limiting through hole is provided on the extension for the guide sleeve to pass through.

[0008] 2. In the above scheme, the other end of the pin, which is embedded in the second mounting hole, has a wrench portion located on the outside of the mounting block.

[0009] 3. In the above scheme, the mounting block is installed on the lower end face of the valve body by at least two bolts.

[0010] 4. In the above scheme, the first groove is a quarter-spherical groove, and the second groove is an arc-shaped groove formed on the circumference of the pin portion.

[0011] 5. In the above scheme, an air inlet pressurization component is provided at the upper end of the glue supply cylinder.

[0012] 6. In the above scheme, the glue inlet body and the glue outlet channel have a sealing ring fitted on the outside of the firing pin.

[0013] 7. In the above solution, the lower surface of the glue injection body has a mounting protrusion, and the nozzle is mounted on the lower end face of the mounting protrusion through a mounting seat. The mounting seat with internal threads and the mounting protrusion with external threads are connected by threads.

[0014] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:

[0015] This utility model relates to a non-contact dispensing system. The dispensing outlet at the lower end of the dispensing cylinder is connected via a connecting pipe to the end of the dispensing channel on the dispensing body that is furthest from the dispensing channel. The lower end of the dispensing channel, connected to the end of the dispensing channel furthest from the dispensing cylinder, is connected to a nozzle. A first mounting hole is provided on the upper surface of the dispensing body, directly above the dispensing channel. The lower end of a guide sleeve through which a firing pin can pass is threaded into this first mounting hole. The upper end of the guide sleeve passes through the lower opening of the valve body into the receiving groove of the valve body. The upper part of the firing pin, installed in the guide sleeve, is located in the receiving groove, and the lower end of the firing pin passes into the dispensing channel of the dispensing body and engages with the nozzle. The dispensing body is connected to the lower end face of the valve body via a mounting block. A mounting groove for embedding the dispensing body is provided on the side surface of the mounting block. A second horizontally extending groove is provided on the side surface of the mounting block, above or below the dispensing body. A mounting hole is provided, in which a pin is rotatably mounted. A guide hole communicating with the second mounting hole is provided on the side wall of the mounting groove facing the glue injection body. A limiting ball that can slide vertically between the pin and the glue injection body is provided in the vertically extending guide hole. A first groove corresponding to the limiting ball is provided on the side surface of the glue injection body. A second groove corresponding to the limiting ball is provided on the outer surface of the pin. When the limiting ball is located outside the second groove, the limiting ball embedded in the first groove abuts against the pin, realizing a quick-release design between the glue injection module and the valve body. This design allows for stable installation of the glue injection body with internal flow channels, and also allows for rotational disassembly and assembly of the glue injection body, the impact pin, and the nozzle without interfering with the internal component structure of the valve body. It also avoids damage to the impact pin and facilitates high-frequency cleaning of the disassembled glue injection body, impact pin, and nozzle. Attached Figure Description

[0016] Appendix Figure 1 This is a front view of the non-contact dispensing system of this utility model;

[0017] Appendix Figure 2 This is a cross-sectional view of the non-contact dispensing system of this utility model;

[0018] Appendix Figure 3 This is a partial structural cross-sectional view of the non-contact dispensing system of this utility model;

[0019] Appendix Figure 4 This is a partial structural enlarged cross-sectional view of the non-contact dispensing system of this utility model.

[0020] In the above attached figures: 1. Inlet body; 2. Nozzle; 3. Impact pin; 301. Flange; 41. Inlet channel; 42. Outlet channel; 51. Mounting protrusion; 52. Mounting base; 7. Mounting block; 71. Mounting groove; 72. Extension; 73. Limiting through hole; 9. Pin; 91. Wrench part; 10. Second mounting hole; 11. Guide hole; 12. Limiting ball; 131. First groove; 132. Second groove; 14. Guide sleeve; 15. Return spring; 16. First mounting hole; 17. 21. Sealing ring; 22. Receiving groove; 23. Valve body; 24. First lever; 25. First protrusion; 26. First groove; 27. Piezoelectric column; 28. Third protrusion; 29. ​​Third groove; 20. Fourth protrusion; 21. Fourth groove; 22. Fourth groove; 23. Second lever; 24. Second protrusion; 25. Second groove; 26. Support column; 27. First spring; 27. Second spring; 28. Adjusting screw; 39. Glue supply cylinder; 30. Connecting pipe; 31. Air inlet pressurization assembly. Detailed Implementation

[0021] The present patent can be further understood through the specific embodiments given below, but they are not intended to limit the present patent.

[0022] Example 1: A non-contact dispensing system includes: a glue supply cylinder 31, a valve body 22 with an internal receiving groove 21, a glue inlet body 1 with a glue inlet channel 41 and a glue outlet channel 42 respectively opened inside, a nozzle 2 mounted on the glue inlet body 1, and a striking pin 3 that cooperates with the nozzle 2. The glue outlet at the lower end of the glue supply cylinder 31 is connected to the end of the glue inlet channel 41 on the glue inlet body 1 away from the glue outlet channel 42 through a connecting pipe 32. The lower end of the glue outlet channel 42, which is connected to the end of the glue inlet channel 41 away from the glue supply cylinder 31 at the upper end, is connected to... The nozzle 2 is connected. A first mounting hole 16 is opened on the upper surface of the glue injection body 1 and directly above the glue outlet channel 42. The lower end of a guide sleeve 14 through which the impact pin 3 can pass is threaded into the first mounting hole 16. The upper end of the guide sleeve 14 passes through the lower end opening of the valve body 22 and enters the receiving groove 21 of the valve body 22. The upper part of the impact pin 3 installed in the guide sleeve 14 is located in the receiving groove 21. The lower end of the impact pin 3 passes into the glue outlet channel 42 of the glue injection body 1 and cooperates with the nozzle 2.

[0023] The glue inlet body 1 is connected to the lower end face of the valve body 22 via a mounting block 7. A mounting groove 71 for the glue inlet body 1 to be embedded is provided on the side surface of the mounting block 7. A second mounting hole 10 extending horizontally is provided on the side surface of the mounting block 7 above or below the glue inlet body 1. A pin 9 is rotatably installed in the second mounting hole 10. A guide hole 11 communicating with the second mounting hole 10 is provided on the side wall of the mounting groove 71 facing the glue inlet body 1. A limiting ball 12 that can slide vertically between the pin 9 and the glue inlet body 1 is provided in the vertically extending guide hole 11. A first groove 131 corresponding to the limiting ball 12 is provided on the side surface of the glue inlet body 1. A second groove 132 corresponding to the limiting ball 12 is provided on the outer surface of the pin 9. When the limiting ball 12 is outside the second groove 132, the limiting ball 12 embedded in the first groove 131 is in abutting contact with the pin 9.

[0024] During normal use, the glue injection body 1 is embedded in the mounting groove 71 of the mounting block 7. At this time, the pin 9 is in the first position, and a part of the limiting ball 12 located outside the second groove 252 is embedded in the first groove 232 on the body under the pressure of the pin 9, thereby realizing the connection between the glue injection body 1 and the mounting block 7.

[0025] The mounting block 7 has an extension 72 extending toward the guide sleeve 14, and a limiting through hole 73 is provided on the extension 72 for the guide sleeve 14 to pass through; the other end of the pin 9, which is embedded in the second mounting hole 10, has a wrench portion 91 located on the outside of the mounting block 7.

[0026] The mounting block 7 is mounted on the lower end face of the valve body 22 by at least two bolts; the first groove 131 is a quarter-spherical groove, and the second groove 132 is an arc-shaped groove opened on the circumference of the pin 9.

[0027] Example 2: A non-contact dispensing system includes: a glue supply cylinder 31, a valve body 22 with an internal receiving groove 21, a glue inlet body 1 with a glue inlet channel 41 and a glue outlet channel 42 respectively opened inside, a nozzle 2 mounted on the glue inlet body 1, and a striking pin 3 that cooperates with the nozzle 2. The glue outlet at the lower end of the glue supply cylinder 31 is connected to the end of the glue inlet channel 41 on the glue inlet body 1 away from the glue outlet channel 42 through a connecting pipe 32. The lower end of the glue outlet channel 42, which is connected to the end of the glue inlet channel 41 away from the glue supply cylinder 31 at the upper end, is connected to... The nozzle 2 is connected. A first mounting hole 16 is opened on the upper surface of the glue injection body 1 and directly above the glue outlet channel 42. The lower end of a guide sleeve 14 through which the impact pin 3 can pass is threaded into the first mounting hole 16. The upper end of the guide sleeve 14 passes through the lower end opening of the valve body 22 and enters the receiving groove 21 of the valve body 22. The upper part of the impact pin 3 installed in the guide sleeve 14 is located in the receiving groove 21. The lower end of the impact pin 3 passes into the glue outlet channel 42 of the glue injection body 1 and cooperates with the nozzle 2.

[0028] The glue inlet body 1 is connected to the lower end face of the valve body 22 via a mounting block 7. A mounting groove 71 for the glue inlet body 1 to be embedded is provided on the side surface of the mounting block 7. A second mounting hole 10 extending horizontally is provided on the side surface of the mounting block 7 above or below the glue inlet body 1. A pin 9 is rotatably installed in the second mounting hole 10. A guide hole 11 communicating with the second mounting hole 10 is provided on the side wall of the mounting groove 71 facing the glue inlet body 1. A limiting ball 12 that can slide vertically between the pin 9 and the glue inlet body 1 is provided in the vertically extending guide hole 11. A first groove 131 corresponding to the limiting ball 12 is provided on the side surface of the glue inlet body 1. A second groove 132 corresponding to the limiting ball 12 is provided on the outer surface of the pin 9. When the limiting ball 12 is outside the second groove 132, the limiting ball 12 embedded in the first groove 131 is in abutting contact with the pin 9.

[0029] The upper end of the glue supply cylinder 31 is provided with an air inlet pressurization component 33; the glue in the glue supply cylinder 31 enters the glue inlet channel 41 on the glue inlet body 1 through the connecting pipe 32 and then enters the glue outlet channel 42. The lower end of the impact pin 3, which cooperates with the nozzle 2, penetrates into the glue outlet channel 41 and the glue in the glue outlet channel 42 is sprayed out from the lower end of the nozzle 2 through repeated impact between the impact pin 3 and the nozzle 2 to perform the glue dispensing operation.

[0030] The aforementioned glue inlet body 1 has a sealing ring 17 fitted on the outside of the ejector pin 3, located inside the guide sleeve 14 and between the glue outlet channel 42; the lower surface of the aforementioned glue inlet body 1 has a mounting protrusion 51, and the aforementioned nozzle 2 is mounted on the lower end face of the aforementioned mounting protrusion 51 through a mounting seat 52, and the aforementioned mounting seat 52 with internal threads and the mounting protrusion 51 with external threads are connected by threads.

[0031] The valve body 22 has a first lever 23, a piezoelectric column 24, and a second lever 25 arranged sequentially from top to bottom within its receiving groove 21. The right end of the first lever 23 is rotatably connected to the inner wall of the receiving groove 21 above it via a first protrusion 231 and a first groove 232. The right end of the second lever 25 is rotatably connected to the inner wall of the receiving groove 21 below it via a second protrusion 251 and a second groove 252. The upper end of the piezoelectric column 24 is rotatably in contact with the first lever 23 via a third protrusion 241 and a third groove 242. The lower end of the piezoelectric column 24 is rotatably in contact with the second lever 25 via a fourth protrusion 243 and a fourth groove 244. The third protrusion 241 and the third groove 242 are located near the right end of the first lever 23 and are positioned on the first protrusion. On the left side of the first groove 232, the fourth protrusion 243 and the fourth groove 244 are located near the right end of the second lever 25 and on the left side of the second protrusion 251 and the second groove 252. A support column 26 is provided in the receiving groove 21 of the valve body 22 and below the left end of the first lever 23. A first spring 271 is provided between the support column 26 and the lower surface of the left end of the first lever 23. The lower end of a rotary screw 28 mounted on the valve body 22 contacts the upper surface of the left end of the first lever 23. A second spring 272 is provided between the lower surface of the second lever 25 near the left end and the inner wall of the bottom of the receiving groove 21. The lower surface of the left end of the second lever 25 contacts the upper end face of the striker 3. A return spring 15 is provided between the lower end face of the radially outward flange 301 of the upper end of the striker 3 and the guide sleeve 14.

[0032] Working principle:

[0033] The mounting block is fixed to the lower end face of the valve body by bolts. During normal use, the glue inlet body is embedded in the mounting groove of the mounting block. At this time, the pin is in the first position, and part of the limiting ball located outside the second groove is embedded in the first groove on the body under the action of the pin, thereby realizing the connection between the glue inlet body and the mounting block.

[0034] The glue in the glue supply cylinder enters the glue inlet channel on the glue inlet body through the connecting tube, and then enters the glue outlet channel. The lower end of the impact pin, which cooperates with the nozzle, penetrates into the glue outlet channel. Through repeated impacts between the impact pin and the nozzle, the glue in the glue outlet channel is sprayed out from the lower end of the nozzle to perform the dispensing operation. Specifically: after the piezoelectric column is energized, it expands downward to create a thrust on the right end of the second lever, which causes the left end of the second lever, which rotates around the second protrusion, to push the impact pin downward to strike the nozzle and dispense glue. After the piezoelectric column is de-energized, it retracts, and the nested reset spring and the second spring reset respectively, so that the impact pin and the second lever return to their initial positions. The excitation voltage of the piezoelectric column is a square wave. Therefore, the impact pin performs high-speed reciprocating motion under the action of the piezoelectric column, so that the glue can be continuously sprayed out from the nozzle.

[0035] When the glue injection body needs to be disassembled, first use the wrench to rotate the pin to the second position. At this time, the second groove on the pin faces the limiting ball. Then, rotate the glue injection body around the ejector pin in the glue dispensing channel until the glue injection body is rotated out of the mounting slot of the mounting block. During this process, the limiting ball moves into the second groove on the pin under the push of the body, thereby losing its limiting effect on the glue injection body and allowing the glue injection body to rotate. Next, move the glue injection body that has been rotated out of the mounting slot downwards until disassembly is complete. The guide sleeve, ejector pin and nozzle installed on the glue injection body are also removed together for easy replacement and cleaning. When the glue injection body needs to be installed, simply perform the reverse operation of disassembly.

[0036] When using the aforementioned non-contact dispensing system, the temperature of the adhesive liquid from the glue tank to the dispensing channel is adjusted by heating or cooling to ensure dispensing accuracy and quality. Simultaneously, a quick-release design is implemented between the dispensing module and the valve body. This allows for stable installation of the dispensing body with its internal flow channel, while also enabling rotational disassembly and assembly of the dispensing body, ejector pin, and nozzle without interfering with the internal structure of the valve body. This avoids damage to the ejector pin and facilitates high-frequency cleaning of the disassembled dispensing body, ejector pin, and nozzle. The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A non-contact dispensing system, comprising: The system comprises a glue supply cylinder (31), a valve body (22) with an internal receiving groove (21), a glue inlet body (1) with a glue inlet channel (41) and a glue outlet channel (42) respectively, a nozzle (2) mounted on the glue inlet body (1), and a striking pin (3) that cooperates with the nozzle (2). The glue outlet at the lower end of the glue supply cylinder (31) is connected to the end of the glue inlet channel (41) on the glue inlet body (1) away from the glue outlet channel (42) through a connecting pipe (32). The lower end of the glue outlet channel (42), which is connected to the end of the glue inlet channel (41) away from the glue supply cylinder (31) at the upper end, is connected to the nozzle (2). Its characteristic is that... A first mounting hole (16) is provided on the upper surface of the glue inlet body (1) and directly above the glue outlet channel (42). The lower end of a guide sleeve (14) through which the impact pin (3) can pass is threaded into the first mounting hole (16). The upper end of the guide sleeve (14) passes through the lower end opening of the valve body (22) and enters the receiving groove (21) of the valve body (22). The upper part of the impact pin (3) installed in the guide sleeve (14) is located in the receiving groove (21). The lower end of the impact pin (3) passes into the glue outlet channel (42) of the glue inlet body (1) and cooperates with the nozzle (2). The glue inlet body (1) is connected to the lower end face of the valve body (22) via a mounting block (7). A mounting groove (71) for the glue inlet body (1) to be inserted is provided on the side surface of the mounting block (7). A second mounting hole (10) extending horizontally is provided on the side surface of the mounting block (7) above or below the glue inlet body (1). A pin (9) is rotatably installed in the second mounting hole (10). A guide hole (11) communicating with the second mounting hole (10) is provided on the side wall of the mounting groove (71) facing the glue inlet body (1). A limiting ball (12) is provided in the extended guide hole (11) and can slide vertically between the pin (9) and the glue injection body (1). A first groove (131) corresponding to the limiting ball (12) is provided on the side surface of the glue injection body (1). A second groove (132) corresponding to the limiting ball (12) is provided on the outer surface of the pin (9). When the limiting ball (12) is located outside the second groove (132), the limiting ball (12) embedded in the first groove (131) is in abutting contact with the pin (9).

2. The non-contact dispensing system according to claim 1, characterized in that: The mounting block (7) has an extension (72) extending in the direction of the guide sleeve (14), and a limiting through hole (73) is provided on the extension (72) for the guide sleeve (14) to pass through.

3. The non-contact dispensing system according to claim 1, characterized in that: The other end of the pin (9), which is embedded in the second mounting hole (10) and located on the outside of the mounting block (7), has a wrench portion (91).

4. The non-contact dispensing system according to claim 1, characterized in that: The mounting block (7) is mounted on the lower end face of the valve body (22) by at least two bolts.

5. The non-contact dispensing system according to claim 1, characterized in that: The first groove (131) is a quarter-spherical groove, and the second groove (132) is an arc-shaped groove opened on the circumference of the pin (9).

6. The non-contact dispensing system according to claim 1, characterized in that: An air inlet pressurization assembly (33) is provided at the upper end of the glue supply cylinder (31).

7. The non-contact dispensing system according to claim 1, characterized in that: The glue inlet body (1) has a sealing ring (17) fitted on the outside of the ejector pin (3) and located between the guide sleeve (14) and the glue outlet channel (42).

8. The non-contact dispensing system according to claim 1, characterized in that: The lower surface of the glue injection body (1) has a mounting protrusion (51), and the nozzle (2) is mounted on the lower end face of the mounting protrusion (51) through a mounting seat (52). The mounting seat (52) with internal threads and the mounting protrusion (51) with external threads are connected by threads.

Images