Gluing on-off valve

Abstract

The utility model provides a kind of glueing on-off valve, including valve body, the one end of valve body is end cover, the other end is glueing head, the both sides of valve body lateral wall are respectively provided with glue inlet and air inlet, gas cavity and material cavity are opened in valve body, guiding block is equipped between gas cavity and material cavity, valve needle is slidably arranged in valve body and passes through gas cavity, guiding block and material cavity, first sealing ring is equipped between guiding block and valve body inner wall, overflow glue groove is opened in the middle of guiding block, second sealing ring and third sealing ring are respectively equipped between valve needle and guiding block on the both sides of overflow glue groove, overflow glue channel is opened in valve body and is communicated with overflow glue groove, glue outlet is equipped in the end of material cavity, glue outlet is opened in the middle of glue outlet, needle end of valve needle telescopic sliding in glue outlet, the on-off of glue outlet is controlled.The valve is controlled by sealing monitoring, accurate pneumatic control and reasonable structure design, effectively prevent leakage, improve gluing precision, and can timely early warning fault, prolong equipment life, guarantee production stability and product quality.

Description

Technical Field

[0001] This utility model relates to the field of valve bodies, and more particularly to an adhesive-coated on / off valve. Background Technology

[0002] In many industrial production scenarios, such as automotive painting, electronic equipment manufacturing, and handicraft production, precise adhesive application is often required using adhesive coating equipment. Traditional adhesive coating equipment's on / off valves have some limitations. For example, the seals are prone to damage during long-term use. Once the seal fails, adhesive may leak and accumulate inside the valve body, not only wasting adhesive but also affecting coating quality and potentially damaging the equipment. Furthermore, it is difficult to detect seal damage in a timely manner, making it difficult to effectively monitor the valve's operating status and lifespan, thus impacting the continuity and stability of production. Utility Model Content

[0003] In view of the above, this utility model provides a glue-applying on / off valve, which effectively prevents leakage, improves glue-applying accuracy, and provides timely early warning of faults through sealing monitoring, precise pneumatic control, and reasonable structural design, thereby extending equipment life and ensuring production stability and product quality.

[0004] The present invention specifically adopts the following technical solution: a glue-applying on / off valve, characterized in that: it includes a valve body, one end of which is an end cap and the other end is a glue-applying head; glue inlet and air inlet are respectively opened on both sides of the side wall of the valve body; an air chamber and a material chamber are opened inside the valve body; a guide block is provided between the air chamber and the material chamber; a valve needle is slidably provided inside the valve body through the air chamber, the guide block and the material chamber; a first sealing ring is provided between the guide block and the inner wall of the valve body; an overflow groove is opened in the middle of the guide block; a second sealing ring and a third sealing ring are respectively provided between the valve needle and the guide block on both sides of the overflow groove; an overflow channel is opened on the valve body communicating with the overflow groove; a glue outlet is provided at the end of the material chamber; a glue outlet is opened in the middle of the glue outlet; the needle tip of the valve needle slides and extends within the glue outlet to control the opening and closing of the glue outlet.

[0005] As a further improved technical solution, the flat end of the valve needle is provided with a piston, and a butterfly spring is provided between the piston and the inner wall of the end cap. The piston and the butterfly spring are movably disposed in the air chamber.

[0006] As a further improved technical solution, the air chamber is connected to the air inlet through an air intake channel, which is located on the side of the piston away from the disc spring.

[0007] As a further improved technical solution, a fourth sealing ring is provided between the piston and the inner wall of the gas chamber.

[0008] As a further improved technical solution, the glue applicator is trumpet-shaped, and the glue dispensing head is located inside it.

[0009] As a further improved technical solution, the side wall of the valve body is also provided with an overflow port, which is connected to the overflow channel.

[0010] As a further improved technical solution, the glue inlet is connected to the material cavity through the glue inlet channel.

[0011] This utility model's adhesive application on / off valve, through its design of an overflow groove, overflow channel, and overflow port, allows adhesive to flow out from the overflow port when the sealing ring fails or is damaged. This provides a direct and timely alert to operators of valve malfunctions, facilitating prompt repair or replacement and ensuring normal equipment operation. It prevents adhesive leakage caused by sealing issues from further impacting production, improving the reliability and stability of the production process and avoiding batch defects due to hidden faults. Furthermore, the valve features four sealing rings, and the design of the sealing rings and guide blocks ensures superior sealing performance during normal use, reducing adhesive leakage at non-outlet points and lowering adhesive residue levels. This design minimizes liquid waste and prevents corrosion or damage to other equipment components due to adhesive leakage, extending the equipment's lifespan. Furthermore, the valve needle's straight movement is precisely constrained by a guide block, ensuring concentric closure between the needle and the dispensing port, resulting in more stable adhesive control. The funnel-shaped dispensing head, with the dispensing head located inside, allows the dispensing valve to better adapt to different shapes and sizes of dispensing applications while protecting the internal dispensing head. The overall design is particularly suitable for fields with stringent requirements for adhesive consistency, such as automotive manufacturing, electronic packaging, and photovoltaic modules. Structural optimization addresses long-standing industry issues related to hidden faults and maintenance costs. Attached Figure Description

[0012] Figure 1 This is a front view of the adhesive-coated on / off valve of this application.

[0013] Figure 2 This is a schematic diagram of the back of the adhesive-coated on / off valve of this application.

[0014] Figure 3 for Figure 1 Schematic diagram of the directional section. Detailed Implementation

[0015] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0016] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "set up" and "connection" 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; they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood through the specific circumstances.

[0017] Reference Figures 1-3 This embodiment discloses a glue-applying on / off valve, comprising a valve body 1, with an end cap 2 at one end and a glue-applying head 3 at the other end. A glue inlet 4 and an air inlet 5 are respectively provided on both sides of the side wall of the valve body 1. An air chamber 101 and a material chamber 102 are provided inside the valve body 1. The glue inlet 4 communicates with the material chamber 102 through a glue inlet channel 105. A guide block 6 is provided between the air chamber 101 and the material chamber 102. A valve needle 7 is slidably disposed inside the valve body 1, passing through the air chamber 101, the guide block 6, and the material chamber 102. A first sealing ring 8 is provided between the guide block 6 and the inner wall of the valve body 1. An overflow groove is provided in the middle of the guide block 6. 61. On both sides of the overflow groove 61, a second sealing ring 9 and a third sealing ring 10 are respectively provided between the valve needle 7 and the guide block 6. An overflow channel 106 is provided on the valve body 1, which is connected to the overflow groove 61. An outlet head 103 is provided at the end of the material chamber 102. An outlet 1031 is opened in the middle of the outlet head 103. An overflow port 11 is opened on the side wall of the valve body 1, which is connected to the overflow channel 106. When the second sealing ring 9 and the third sealing ring 10 fail or are damaged, glue will flow out from the overflow port 11, which visually indicates the failure of the seal, thereby monitoring the condition and service life of the valve body 1.

[0018] Specifically, the flat end of the valve needle 7 is provided with a piston 12, and a butterfly spring 13 is provided between the piston 12 and the inner wall of the end cover 2. The piston 12 and the butterfly spring 13 are movably disposed in the air chamber 101. The air chamber 101 is connected to the air inlet 5 through the air inlet channel 104. The air inlet channel 104 is located on the side of the piston 12 away from the butterfly spring 13. Air is supplied from the air inlet 5 to the air chamber 101 to control the movement of the piston 12 in the air chamber 101, thereby controlling the sliding of the valve needle 7 in the valve body 1. The needle tip of the valve needle 7 slides and extends within the glue outlet 103 to control the opening and closing of the glue outlet 1031. Specifically, compressed gas is introduced through the air inlet 5, enters the air chamber 101 through the air inlet channel 104, and pushes the piston 12 to move towards the glue outlet 103. The piston 12 drives the valve needle 7 to slide towards the glue outlet until the needle tip of the valve needle 7 touches the glue outlet 1031, cutting off the glue flow. At this time, the butterfly spring 13 is compressed and stored by the piston 12, stops the air intake, releases the pressure in the air chamber 101, and the butterfly spring 13 rebounds, pushing the piston 12 and the valve needle 7 backward towards the end cover 2. The needle tip of the valve needle 7 disengages from the glue outlet 1031, and the glue flows from the glue inlet 4 through the glue inlet channel 105 into the material chamber 102, and finally flows out from the glue outlet 1031.

[0019] Furthermore, a fourth sealing ring 14 is provided between the piston 12 and the inner wall of the air chamber 101. The glue applicator 3 is trumpet-shaped, and the glue outlet 103 is located inside it.

[0020] Furthermore, the above embodiments are only used to illustrate the present utility model and are not intended to limit the technical solutions described in the present utility model. The understanding of this specification should be based on those skilled in the art. Although the present utility model has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still make modifications or equivalent substitutions to the present utility model. All technical solutions and improvements that do not depart from the spirit and scope of the present utility model should be covered within the scope of the claims of the present utility model.

Claims

1. A glue-coated on / off valve, characterized in that: The valve body includes a valve body with an end cap at one end and a glue applicator at the other end. A glue inlet and an air inlet are respectively provided on both sides of the valve body's sidewall. An air chamber and a material chamber are provided inside the valve body. A guide block is provided between the air chamber and the material chamber. A valve needle is slidably disposed inside the valve body, passing through the air chamber, the guide block, and the material chamber. A first sealing ring is provided between the guide block and the inner wall of the valve body. An overflow groove is provided in the middle of the guide block. A second sealing ring and a third sealing ring are respectively provided between the valve needle and the guide block on both sides of the overflow groove. An overflow channel is provided on the valve body communicating with the overflow groove. A glue outlet is provided at the end of the material chamber, with a glue outlet in the middle. The tip of the valve needle slides and extends within the glue outlet to control the opening and closing of the glue outlet.

2. The adhesive-coated on / off valve according to claim 1, characterized in that: The valve needle has a piston at its flat end, and a butterfly spring is provided between the piston and the inner wall of the end cap. The piston and the butterfly spring are movably disposed within the air chamber.

3. The adhesive-coated on / off valve according to claim 2, characterized in that: The air chamber is connected to the air inlet through an air intake channel, which is located on the side of the piston away from the disc spring.

4. The adhesive-coated on / off valve according to claim 2, characterized in that: A fourth sealing ring is provided between the piston and the inner wall of the gas chamber.

5. The adhesive-coated on / off valve according to claim 1, characterized in that: The applicator head is trumpet-shaped, and the dispensing head is located inside it.

6. The adhesive-coated on / off valve according to claim 1, characterized in that: The valve body also has an overflow port on its side wall, which is connected to the overflow channel.

7. The adhesive-coated on / off valve according to claim 1, characterized in that: The glue inlet is connected to the material cavity through the glue inlet channel.

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