Two-component screw feeder valve

Abstract

The utility model discloses a two-component screw rod glue supply valve, and A glue inlet block and B glue inlet block are respectively installed with the driving block that has the driving cavity of inside opening on the side opposite to the glue outlet block, between the lower end of A glue inlet runner and the upper end of A glue outlet runner, the disc body part of the piston at the end of the cylinder part away from the valve core is movably arranged in the driving cavity and is sealed with the inner wall of the driving cavity, and the cylinder part outside of the piston is sleeved with an elastic element in the compression state. On the basis of realizing the quantitative supply of two-component glue liquid, the utility model can realize the switch of glue outlet runner to improve the precision of glue liquid supply, can produce certain back suction force when closing the glue to release the glue outlet pressure in the glue outlet runner, avoid the overflow of glue after closing the glue, improve the closing glue effect and the back suction force produced when closing the glue, and effectively avoid the waste of glue caused by abnormal glue.

Description

Technical Field

[0001] This utility model relates to the field of dispensing technology, and in particular to a two-component screw dispensing valve. Background Technology

[0002] Dispensing, also known as gluing, coating, potting, or dripping, involves applying adhesives such as glue to a product through application, potting, or dripping to achieve functions such as bonding, sealing, fixing, insulation, and surface smoothing. As electronic communication products become increasingly miniaturized, their components and parts are also adopting smaller forms. During assembly, dispensing and bonding various components is a common production technique, bonding related components together to form a whole. The procedure typically involves first applying glue to the surface of one part using a dispensing mechanism, and then bonding another part to the glued surface. To facilitate the dispensing operation, repeated stops and starts are required during glue delivery to control the glue flow from the dispensing needle. Therefore, situations can easily occur where glue overflows and damages the product due to untimely or poor stopping techniques. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a two-component screw glue supply valve. This two-component screw glue supply valve can not only realize the quantitative supply of two-component glue, but also realize the opening and closing of the glue outlet channel to improve the accuracy of glue supply, and can also improve the driving force and response speed of glue closing and ensure the stability of glue closing state.

[0004] To solve the above technical problems, the technical solution adopted by this utility model is: a two-component screw glue supply valve, including: an A-glue screw valve, a B-glue screw valve, an A-glue inlet block, and a B-glue inlet block. The upper end of the A-glue inlet channel on the A-glue inlet block is connected to the glue outlet of the A-glue screw valve, and the upper end of the B-glue inlet channel on the B-glue inlet block is connected to the glue outlet of the B-glue screw valve. A glue outlet block with an A-glue outlet channel and a B-glue outlet channel is provided between the A-glue inlet block and the B-glue inlet block. A drive block with an internal drive cavity is installed on the side of the A-glue inlet block and the B-glue inlet block opposite to the glue outlet block. The lower end of the A-glue inlet channel and the upper end of the A-glue outlet channel, and the lower end of the B-glue inlet channel and the upper end of the B-glue outlet channel are connected by a horizontally extending connecting channel.

[0005] Each of the connection channels is equipped with a valve seat. One end of a valve core that can move horizontally passes through a central through hole in the valve seat and is fitted with a stop head that can seal with the central through hole. The other end of the valve core passes through a drive block and is connected to the cylindrical part of a piston located in the drive chamber. The disc part of the piston located at the end of the cylindrical part away from the valve core is movably disposed in the drive chamber and is sealed with the inner wall of the drive chamber. A gas pipe connector that communicates with the drive chamber is installed on the drive block on both sides of the disc part of the piston. An elastic element in a compressed state is fitted on the outside of the cylindrical part of the piston.

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

[0007] 1. In the above scheme, a sealing assembly is provided between the valve core and the drive block.

[0008] 2. In the above scheme, a connecting block is also provided, wherein the connecting block is respectively provided with an A glue connection channel connecting the outlet of the A glue screw valve and the A glue inlet channel, and a B glue connection channel connecting the B glue screw valve and the B glue inlet channel.

[0009] 3. In the above solution, the connecting block is provided with two glue discharge ports that communicate with the A glue connection channel and the B glue connection channel, and each glue discharge port is equipped with a glue screw.

[0010] 4. In the above scheme, the A glue inlet block and the B glue inlet block are respectively installed on the end faces of the two sides of the glue outlet block, and the drive block is installed on the end face of the A glue inlet block and the B glue inlet block opposite to the glue outlet block.

[0011] 5. In the above scheme, the valve seat is sealed at the connection between the dispensing block and the A glue inlet block or the B glue inlet block.

[0012] 6. In the above scheme, a dispensing nozzle is installed on the lower end face of the dispensing block. The dispensing nozzle has an A glue outlet and a B glue outlet respectively provided corresponding to the A glue dispensing channel and the B glue dispensing channel.

[0013] 7. In the above scheme, the dispensing nozzle is provided with threads for connecting to the mixing tube.

[0014] 8. In the above scheme, an inner chamfer is provided on the valve seat at one end near the valve core and located in the central through hole, and the end face of the stop head facing the central through hole is set as an inclined surface that cooperates with the inner chamfer.

[0015] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:

[0016] This utility model relates to a two-component screw glue supply valve. Each of the A-component and B-component inlet blocks, opposite to the outlet block, has a drive block with an internal drive chamber. The lower end of the A-component inlet channel and the upper end of the A-component outlet channel, as well as the lower end of the B-component inlet channel and the upper end of the B-component outlet channel, are connected by a horizontally extending connecting channel. Each connecting channel contains a valve seat. One end of a horizontally movable valve core passes through a central through-hole in the valve seat and is fitted with a stop head that seals with the central through-hole. The other end of the valve core passes through the drive block and connects to the cylindrical portion of a piston located within the drive chamber. The disc portion of the piston, located at the end of the cylindrical portion away from the valve core, is movably mounted... The device is placed inside the drive chamber and sealed to the inner wall of the drive chamber. On the drive block, on both sides of the piston disc, there is a gas pipe connector that communicates with the drive chamber. An elastic element in a compressed state is fitted on the outer side of the piston cylinder. In addition to the quantitative supply of two-component adhesive, it can not only open and close the adhesive outlet channel to improve the accuracy of adhesive supply, but also generate a certain back suction force when closing the adhesive to release the dispensing pressure in the dispensing channel and prevent the adhesive from overflowing after closing. It can also improve the driving force and response speed of closing the adhesive and ensure the stability of the closing state, thereby improving the closing effect and the back suction force generated when closing the adhesive, and effectively avoiding the situation of adhesive waste caused by abnormal dispensing. Attached Figure Description

[0017] Appendix Figure 1 This is a schematic diagram of the overall structure of the two-component screw glue supply valve of this utility model;

[0018] Appendix Figure 2 This is a partial structural cross-sectional view of the two-component screw glue supply valve of this utility model;

[0019] Appendix Figure 3 This utility model Figure 2 Enlarged view of a local structure.

[0020] In the attached diagrams: 1. Glue outlet block; 11. Glue A outlet channel; 12. Glue B outlet channel; 2. Glue A inlet block; 21. Glue A inlet channel; 3. Glue B inlet block; 31. Glue B inlet channel; 4. Connecting channel; 41. Valve seat; 42. Central through hole; 43. Valve core; 44. Stop head; 5. Piston; 51. Column part; 52. Disc part; 6. Drive block; 61. Drive chamber; 62. Air pipe connector; 7. Elastic element; 8. Glue outlet nozzle; 81. Glue A outlet; 82. Glue B outlet; 9. Connecting block; 91. Glue A screw valve; 92. Glue B screw valve; 93. Glue discharge port; 94. Glue discharge screw; 95. Glue A connecting channel; 96. Glue B connecting channel. 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 two-component screw glue supply valve, comprising: an A-component screw valve 91, a B-component screw valve 92, an A-component inlet block 2, and a B-component inlet block 3. The upper end of the A-component inlet channel 21 on the A-component inlet block 2 is connected to the outlet of the A-component screw valve 91, and the upper end of the B-component inlet channel 31 on the B-component inlet block 3 is connected to the outlet of the B-component screw valve 92. A [missing information - likely a connector or structure] is provided between the A-component inlet block 2 and the B-component inlet block 3. A dispensing block 1 is provided with an A-type glue dispensing channel 11 and a B-type glue dispensing channel 12 respectively. A driving block 6 with a driving cavity 61 is installed on the side opposite to the dispensing block 1 of the A-type glue inlet block 2 and the B-type glue inlet block 3. The lower end of the A-type glue inlet channel 21 and the upper end of the A-type glue dispensing channel 11, and the lower end of the B-type glue inlet channel 31 and the upper end of the B-type glue dispensing channel 12 are connected by a horizontally extending connecting channel 4.

[0023] Each of the connection channels 4 is equipped with a valve seat 41. One end of a valve core 43 that can move horizontally passes through a central through hole 42 opened on the valve seat 41 and is equipped with a stop head 44 that can seal with the central through hole 42. The other end of the valve core 43 passes through the drive block 6 and is connected to the cylindrical part 51 of the piston 5 disposed in the drive cavity 61. The disc part 52 of the piston 5 located at the end of the cylindrical part 51 away from the valve core 43 is movably disposed in the drive cavity 61 and is sealed with the inner wall of the drive cavity 61. A tracheal connector 62 that communicates with the drive cavity 61 is respectively installed on the drive block 6 and on both sides of the disc part 52 of the piston 5. An elastic member 7 in a compressed state is fitted on the outside of the cylindrical part 51 of the piston 5.

[0024] During use, the A-glue screw valve 91 and the B-glue screw valve 92 quantitatively feed the A-glue and B-glue into the A-glue inlet channel 21 and the B-glue inlet channel 31, respectively.

[0025] When air is introduced into the drive chamber 6 through the air pipe joint 62 on the side away from the valve seat of the piston 5 disc body 52, the piston 5 disc body 52 moves away from the glue inlet block under the action of the elastic member 7, thereby driving the stop head 44, which moves with the piston 5, to seal and cooperate with the central through hole 42 on the valve seat 41, thus closing the glue outlet channel.

[0026] When it is necessary to dispense glue, air is introduced into the drive chamber 61 through the air pipe joint 62 on the side of the piston 5 disc body 52 away from the valve seat 41. Under the push of high pressure gas, the piston 5 disc body 52 moves towards the glue inlet block and squeezes the elastic element 7, thereby driving the stop head 44, which moves with the piston 5, away from the valve seat 41. A glue outlet gap is formed between the stop head 44 and the central through hole 42 on the valve seat 41. The glue in the glue inlet channel flows through the gap between the valve core 43 and the connecting channel 4, the valve seat 41, and the gap between the stop head 44 and the central through hole 42 on the valve seat 41, and then flows into the glue outlet channel accordingly, and then flows out through the glue outlet on the glue outlet nozzle 8.

[0027] A sealing assembly is provided between the valve core 43 and the drive block 6.

[0028] The above-mentioned connection block 9 is also provided, and the connection block 9 is respectively provided with an A glue connection channel 95 connecting the outlet of the A glue screw valve 91 to the A glue inlet channel 21 and a B glue connection channel 96 connecting the B glue screw valve 92 to the B glue inlet channel 31.

[0029] The connecting block 9 is provided with two glue discharge ports 93 that communicate with the A glue connection channel 95 and the B glue connection channel 96. Each glue discharge port 93 is equipped with a glue discharge screw 94.

[0030] The aforementioned A-glue inlet block 2 and B-glue inlet block 3 are respectively installed on the end faces of the two sides of the glue outlet block 1, and the drive block 6 is installed on the end face of the A-glue inlet block 2 and B-glue inlet block 3 opposite to the side of the glue outlet block 1.

[0031] The valve seat 41 is sealed and installed at the connection between the dispensing block 1 and the A glue inlet block 2 or the B glue inlet block 3.

[0032] Example 2: A two-component screw glue supply valve, comprising: an A-component screw valve 91, a B-component screw valve 92, an A-component inlet block 2, and a B-component inlet block 3. The upper end of the A-component inlet channel 21 on the A-component inlet block 2 is connected to the outlet of the A-component screw valve 91, and the upper end of the B-component inlet channel 31 on the B-component inlet block 3 is connected to the outlet of the B-component screw valve 92. A [missing information - likely a device or structure] is provided between the A-component inlet block 2 and the B-component inlet block 3. A dispensing block 1 is provided with an A-type glue dispensing channel 11 and a B-type glue dispensing channel 12 respectively. A driving block 6 with a driving cavity 61 is installed on the side opposite to the dispensing block 1 of the A-type glue inlet block 2 and the B-type glue inlet block 3. The lower end of the A-type glue inlet channel 21 and the upper end of the A-type glue dispensing channel 11, and the lower end of the B-type glue inlet channel 31 and the upper end of the B-type glue dispensing channel 12 are connected by a horizontally extending connecting channel 4.

[0033] Each of the connection channels 4 is equipped with a valve seat 41. One end of a valve core 43 that can move horizontally passes through a central through hole 42 opened on the valve seat 41 and is equipped with a stop head 44 that can seal with the central through hole 42. The other end of the valve core 43 passes through the drive block 6 and is connected to the cylindrical part 51 of the piston 5 disposed in the drive cavity 61. The disc part 52 of the piston 5 located at the end of the cylindrical part 51 away from the valve core 43 is movably disposed in the drive cavity 61 and is sealed with the inner wall of the drive cavity 61. A tracheal connector 62 that communicates with the drive cavity 61 is respectively installed on the drive block 6 and on both sides of the disc part 52 of the piston 5. An elastic member 7 in a compressed state is fitted on the outside of the cylindrical part 51 of the piston 5.

[0034] When it is necessary to stop the glue dispensing, air is introduced into the drive chamber 61 through the air pipe joint 62 on the side of the piston 5 disc body 52 near the valve seat 41. Under the combined action of the high-pressure gas and the elastic element 7 in a compressed state, the piston 5 disc body 52 moves away from the glue inlet block, thereby driving the stop head 44, which moves with the piston, to seal and cooperate with the central through hole 42 on the valve seat 41, thus closing the glue outlet channel.

[0035] A sealing assembly is provided between the valve core 43 and the drive block 6.

[0036] The above-mentioned connection block 9 is also provided, and the connection block 9 is respectively provided with an A glue connection channel 95 connecting the outlet of the A glue screw valve 91 to the A glue inlet channel 21 and a B glue connection channel 96 connecting the B glue screw valve 92 to the B glue inlet channel 31.

[0037] The connecting block 9 is provided with two glue discharge ports 93 that communicate with the A glue connection channel 95 and the B glue connection channel 96. Each glue discharge port 93 is equipped with a glue discharge screw 94.

[0038] The aforementioned A-glue inlet block 2 and B-glue inlet block 3 are respectively installed on the end faces of the two sides of the glue outlet block 1, and the drive block 6 is installed on the end face of the A-glue inlet block 2 and B-glue inlet block 3 opposite to the side of the glue outlet block 1.

[0039] The valve seat 41 is sealed and installed at the connection between the dispensing block 1 and the A glue inlet block 2 or the B glue inlet block 3.

[0040] A dispensing nozzle 8 is installed on the lower end face of the dispensing block 1. The dispensing nozzle 8 has an A glue outlet 81 and a B glue outlet 82 respectively, which are respectively provided to the A glue dispensing channel 11 and the B glue dispensing channel 12.

[0041] The aforementioned dispensing nozzle 8 is provided with threads for connecting to the mixing tube.

[0042] An inner chamfer is provided on the valve seat 41 and at the end of the central through hole 42 near the valve core 43. The end face of the stop head 44 facing the central through hole 42 is set as an inclined surface that cooperates with the inner chamfer.

[0043] The working principle is as follows: During use, the A glue screw valve and the B glue screw valve quantitatively feed the A glue and B glue into the A glue inlet channel and the B glue inlet channel, respectively.

[0044] When air is not introduced into the drive chamber through the air pipe joint on the side of the piston disc away from the valve seat, the piston disc moves away from the glue inlet block under the action of the elastic element, thereby driving the stop head that moves with the piston to seal and cooperate with the central through hole on the valve seat, closing the glue outlet channel.

[0045] When it is necessary to dispense glue, air is introduced into the drive chamber through the air pipe joint on the side of the piston disc away from the valve seat. Under the push of high pressure gas, the piston disc moves towards the glue inlet block and squeezes the elastic element, thereby driving the stop head that moves with the piston away from the valve seat. A glue outlet gap is formed between the stop head and the central through hole on the valve seat. The glue in the glue inlet channel flows through the gap between the valve core and the connecting channel, the valve seat, and the gap between the stop head and the central through hole on the valve seat, and then flows into the glue outlet channel accordingly, and then flows out through the glue outlet on the glue nozzle.

[0046] The opening and closing of the adhesive is achieved through the extension and retraction of the valve core and the cooperation between the stop head on the valve core and the valve seat. The adhesive is opened by pneumatic force and closed by pneumatic force and elastic element. A certain back suction force can be generated when closing the adhesive to release the dispensing pressure in the dispensing channel and prevent the adhesive from overflowing after closing. It can also improve the driving force and response speed of closing the adhesive and ensure the stability of the closing state, thereby improving the closing effect and the back suction force generated when closing the adhesive. It can also effectively avoid the situation of adhesive waste caused by abnormal dispensing.

[0047] When using the aforementioned two-component screw glue supply valve, it can not only achieve quantitative supply of two-component glue, but also open and close the glue outlet channel to improve the accuracy of glue supply. It can also generate a certain back suction force when closing the glue to release the glue pressure in the outlet channel and prevent glue overflow after closing. Furthermore, it can improve the driving force and response speed of closing the glue and ensure the stability of the closing state, thereby improving the closing effect and the back suction force generated when closing the glue, and effectively avoiding glue waste caused by abnormal glue dispensing.

[0048] 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 two-component screw glue feeder valve comprising: A glue screw valve (91), B glue screw valve (92), A glue inlet block (2), and B glue inlet block (3) are provided. The upper end of the A glue inlet channel (21) on the A glue inlet block (2) is connected to the outlet of the A glue screw valve (91). The upper end of the B glue inlet channel (31) on the B glue inlet block (3) is connected to the outlet of the B glue screw valve (92). An A glue outlet channel (11) is provided between the A glue inlet block (2) and the B glue inlet block (3). The glue outlet block (1) of the glue outlet channel (12) of the glue B is characterized in that: the glue inlet block (2) and the glue inlet block (3) of the glue A are each installed on the side opposite to the glue outlet block (1) with a drive block (6) having a drive cavity (61) inside. The lower end of the glue inlet channel (21) of the glue A and the upper end of the glue outlet channel (11) of the glue A, and the lower end of the glue inlet channel (31) of the glue B and the upper end of the glue outlet channel (12) of the glue B are connected by a horizontally extending connecting channel (4). Each of the connection channels (4) is equipped with a valve seat (41). One end of a valve core (43) that can move horizontally passes through a central through hole (42) opened on the valve seat (41) and is equipped with a stop head (44) that can seal with the central through hole (42). The other end of the valve core (43) passes through the drive block (6) and is connected to the cylindrical part (51) of the piston (5) set in the drive cavity (61). The disc part (52) of the piston (5) located at the end of the cylindrical part (51) away from the valve core (43) is movably set in the drive cavity (61) and seals with the inner wall of the drive cavity (61). A tracheal connector (62) that communicates with the drive cavity (61) is installed on the drive block (6) and on both sides of the disc part (52) of the piston (5). An elastic member (7) in a compressed state is fitted on the outside of the cylindrical part (51) of the piston (5).

2. The twin screw, dual component, screw-die valve of claim 1 wherein: A sealing assembly is provided between the valve core (43) and the drive block (6).

3. The twin screw, dual component, screw gravimetric feeder of claim 1 wherein: A connecting block (9) is also provided, and the connecting block (9) is provided with an A glue connection channel (95) connecting the outlet of the A glue screw valve (91) and the A glue inlet channel (21) and a B glue connection channel (96) connecting the B glue screw valve (92) and the B glue inlet channel (31).

4. The twin screw, dual component, screw gravimetric feeder valve of claim 3 wherein: The connecting block (9) has two glue discharge ports (93) that communicate with the A glue connection channel (95) and the B glue connection channel (96), and each glue discharge port (93) is equipped with a glue discharge screw (94).

5. The twin screw, dual component, screw gravimetric feeder of claim 1 wherein: The A-glue inlet block (2) and the B-glue inlet block (3) are respectively installed on the end faces of the two sides of the outlet block (1), and the drive block (6) is installed on the end face of the A-glue inlet block (2) and the B-glue inlet block (3) opposite to the outlet block (1).

6. The twin screw, dual component, screw gravimetric feeder valve of claim 5 wherein: The valve seat (41) is sealed at the connection between the glue outlet block (1) and the A glue inlet block (2) or the B glue inlet block (3).

7. The twin screw, dual component, screw gravimetric feeder of claim 1 wherein: The lower end surface of the glue discharging block (1) is provided with a glue discharging nozzle (8), and the glue discharging nozzle (8) is provided with glue discharging ports (81) and (82) corresponding to glue discharging channels (11) and (12) of A glue and B glue respectively.

8. The twin screw, dual component, screw gravimetric feeder valve of claim 7 wherein: The glue discharging nozzle (8) is provided with threads for connecting with a glue mixing pipe.

9. The twin screw, dual component, screw gravimetric feeder of claim 1 wherein: The valve seat (41) is provided with an inner chamfer at one end of the central through hole (42) close to the valve core (43), and the end surface of the stop head (44) facing the central through hole (42) is provided with a bevel matched with the inner chamfer.

Images