Two-component glue supply mechanism

Abstract

The utility model discloses a double-component glue supply mechanism, which is characterized in that a valve seat is arranged in each connecting channel, one end of a valve core capable of moving along the horizontal direction penetrates through a central through hole arranged on the valve seat and is provided with a stop head capable of being matched with the central through hole in a sealing way; the other end of the valve element is connected with a piston arranged on the side, opposite to the glue outlet block, of the A glue inlet block or the B glue inlet block, a cylinder part of the piston is connected with the valve element, and a disc body part of the piston located at the end, away from the valve element, of the cylinder part is movably embedded into a groove formed in the driving block and is in sealing fit with the side wall of the groove. An air pipe joint mounted on the driving block is communicated with the driving cavity; and an elastic piece which is sleeved on the outer side of the cylinder part of the piston and is in a compressed state is arranged between the disc body part of the piston and the corresponding A glue feeding block or B glue feeding block. On the basis of realizing quantitative supply of the double-component glue solution, the stable glue closing state is ensured through the elastic piece, and glue waste caused by abnormal glue discharge is avoided.

Description

Technical Field

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

[0002] As electronic communication products become increasingly miniaturized, their related components or parts also adopt smaller shapes. In the assembly process, applying adhesive to bond various components is a common technique in existing production. This involves bonding related components together to form a whole. The general method is to first apply adhesive to the upper surface of a part using an adhesive dispensing mechanism, and then bond another part to the part with adhesive on its surface.

[0003] Two-component adhesives refer to adhesives where component A and component B are stored separately. When used, components A and B are mixed in a specified ratio using a static mixing tube or other methods before bonding. The adhesive is delivered from the storage tank to the dispensing needle via pressure or other methods. To facilitate the dispensing operation, repeated stop-and-go operations are necessary during adhesive delivery to control the dispensing needle's output. Therefore, situations where adhesive overflow and damage to the product can easily occur due to untimely or poor stop-and-go action. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a two-component adhesive supply mechanism. This two-component adhesive supply mechanism can not only realize the quantitative supply of two-component adhesive liquid, but also realize the opening and closing of the adhesive liquid outlet channel to improve the accuracy of adhesive supply, and ensure the stability of the adhesive-off state through elastic elements, so as to avoid waste of adhesive due to abnormal dispensing.

[0005] To solve the above technical problems, the technical solution adopted by this utility model is: a two-component glue supply mechanism, 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 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 outlet of the B-glue screw valve. An 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. 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. Each connecting channel is equipped with a valve seat, which can be installed along water... One end of the valve core, which moves horizontally, passes through a central through hole on 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 is connected to a piston located on the side opposite to the outlet block of either the A-grade glue inlet block or the B-grade glue inlet block. The piston's cylindrical portion is connected to the valve core. The piston's disc portion, located at the end of the cylindrical portion away from the valve core, is movably embedded in a groove on the drive block and seals with the side wall of the groove, thereby forming a drive chamber between the piston's disc portion and the groove. An air pipe connector mounted on the drive block communicates with the drive chamber. An elastic element, fitted on the outside of the piston's cylindrical portion and in a compressed state, is provided between the piston's disc portion and the corresponding A-grade glue inlet block or B-grade glue inlet block.

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

[0007] 1. 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.

[0008] 2. 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 discharge screw.

[0009] 3. In the above scheme, the A glue inlet block and the B glue inlet block are respectively installed on the end faces of the glue outlet block on both sides.

[0010] 4. 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.

[0011] 5. 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.

[0012] 6. In the above scheme, the dispensing nozzle is provided with threads for connecting to the mixing tube.

[0013] 7. 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.

[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 two-component adhesive supply mechanism. 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 on the valve seat and is fitted with a stop head that seals with the central through-hole. The other end of the valve core is connected to a piston located on the side opposite to the outlet block of either the A-component inlet block or the B-component inlet block. The piston's cylindrical portion is connected to the valve core. The disc portion of the piston, located at the end of the cylindrical portion away from the valve core, is movably embedded in a groove on a drive block and connected to the valve core. The sidewall of the groove is sealed to form a drive chamber between the piston disc and the groove. An air pipe connector mounted on the drive block is connected to the drive chamber. An elastic element fitted on the outside of the piston cylinder and in a compressed state is provided between the piston disc and the corresponding A-component or B-component inlet block. In addition to achieving quantitative supply of two-component adhesive, it can also open and close the adhesive outlet channel to improve the accuracy of adhesive supply. It can 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. Furthermore, the elastic element ensures the stability of the closed state and avoids waste of adhesive due to abnormal dispensing. Attached Figure Description

[0016] Appendix Figure 1 This is a schematic diagram of the overall structure of the two-component adhesive supply mechanism of this utility model;

[0017] Appendix Figure 2 This is a partial structural cross-sectional view of the two-component adhesive supply mechanism of this utility model;

[0018] Appendix Figure 3 for Figure 2 Enlarged view of a local structure in the image;

[0019] Appendix Figure 4 This is a front view of the structure of the two-component adhesive supply mechanism of this utility model.

[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 glue supply mechanism, 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. 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. An outlet block 1, which has an A-component outlet channel 11 and a B-component outlet channel 12 respectively, is provided between the A-component inlet block 2 and the B-component inlet block 3. The lower end of the A-component inlet channel 21 and the upper end of the A-component outlet channel 11, and the lower end of the B-component inlet channel 31 and the upper end of the B-component outlet channel 12 are connected by a horizontally extending connecting channel 4. A valve seat 41 is installed in each connecting channel 4, and one end of a valve core 43 that can move horizontally passes through the outlet. A central through hole 42 is provided on the valve seat 41 and a stop head 44 that can be sealed and fitted with the central through hole 42 is installed. The other end of the valve core 43 is connected to a piston 5 located on the side opposite to the dispensing block 1 of the A glue inlet block 2 or B glue inlet block 3. The cylindrical part 51 of the piston 5 is connected to the valve core 43. 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 embedded in a groove opened on the drive block 6 and sealed and fitted with the side wall of the groove, thereby forming a drive cavity 61 between the disc part 52 of the piston 5 and the groove. An air pipe connector 62 installed on the drive block 6 communicates with the drive cavity 61. An elastic member 7 that is fitted on the outside of the cylindrical part 51 of the piston 5 and is in a compressed state is provided between the disc part 52 of the piston 5 and the corresponding A glue inlet block 2 or B glue inlet block 3.

[0023] 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.

[0024] When air is not introduced into the drive chamber through the air pipe joint, the piston disc moves away from the A glue inlet block and the B glue inlet block under the action of the elastic element, thereby driving the stop head that moves with the piston to seal with the central through hole on the valve seat and close the glue outlet channel.

[0025] When it is necessary to dispense adhesive, air is introduced into the drive chamber through the air pipe connector. Under the pressure of the high-pressure gas, the piston disc moves towards the A-grade adhesive inlet block and the B-grade adhesive inlet block, while simultaneously squeezing the elastic element. This drives the stop head, which moves with the piston, away from the valve seat. An adhesive dispensing gap is formed between the stop head and the central through hole on the valve seat. The adhesive in the A-grade adhesive inlet channel and the B-grade adhesive inlet channel flows through the gap between the valve core and the connecting channel, the valve seat, and the gap formed between the stop head and the central through hole on the valve seat, and then flows out through the A-grade adhesive outlet and the B-grade adhesive outlet on the dispensing nozzle into the mixing tube installed at the lower end of the dispensing nozzle.

[0026] 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.

[0027] 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.

[0028] The aforementioned A-grade glue inlet block 2 and B-grade glue inlet block 3 are respectively installed on the end faces of the glue outlet block 1 on both sides.

[0029] 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.

[0030] Example 2: A two-component glue supply mechanism, 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. 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. An outlet block 1, with an A-component outlet channel 11 and a B-component outlet channel 12 respectively, is provided between the A-component inlet block 2 and the B-component inlet block 3. The lower end of the A-component inlet channel 21 and the upper end of the A-component outlet channel 11, and the lower end of the B-component inlet channel 31 and the upper end of the B-component outlet channel 12 are connected by a horizontally extending connecting channel 4. A valve seat 41 is installed in each connecting channel 4, and one end of a valve core 43 that can move horizontally passes through the outlet. A central through hole 42 is provided on the valve seat 41 and a stop head 44 that can be sealed and fitted with the central through hole 42 is installed. The other end of the valve core 43 is connected to a piston 5 located on the side opposite to the dispensing block 1 of the A glue inlet block 2 or B glue inlet block 3. The cylindrical part 51 of the piston 5 is connected to the valve core 43. 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 embedded in a groove opened on the drive block 6 and sealed and fitted with the side wall of the groove, thereby forming a drive cavity 61 between the disc part 52 of the piston 5 and the groove. An air pipe connector 62 installed on the drive block 6 communicates with the drive cavity 61. An elastic member 7 that is fitted on the outside of the cylindrical part 51 of the piston 5 and is in a compressed state is provided between the disc part 52 of the piston 5 and the corresponding A glue inlet block 2 or B glue inlet block 3.

[0031] The opening and closing of the glue can be achieved by the extension and retraction of the valve core and the cooperation between the stop head on the valve core and the valve seat. The pneumatic opening and the mechanical closing of the elastic element can generate a certain suction force when closing the glue, thereby relieving the glue pressure in the glue channel and preventing glue overflow after closing. Moreover, the glue closing state can be kept stable without external energy supply, avoiding glue waste caused by abnormal glue dispensing.

[0032] 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.

[0033] 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.

[0034] The aforementioned A-grade glue inlet block 2 and B-grade glue inlet block 3 are respectively installed on the end faces of the glue outlet block 1 on both sides.

[0035] 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.

[0036] 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.

[0037] The aforementioned dispensing nozzle 8 is provided with threads for connecting to the mixing tube.

[0038] 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.

[0039] 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.

[0040] When air is not introduced into the drive chamber through the air pipe joint, the piston disc moves away from the A glue inlet block and the B glue inlet block under the action of the elastic element, thereby driving the stop head that moves with the piston to seal with the central through hole on the valve seat and close the glue outlet channel.

[0041] When it is necessary to dispense adhesive, air is introduced into the drive chamber through the air pipe connector. Under the pressure of the high-pressure gas, the piston disc moves towards the A adhesive inlet block and the B adhesive inlet block, while squeezing the elastic element. This drives the stop head, which moves with the piston, away from the valve seat. An adhesive dispensing gap is formed between the stop head and the central through hole on the valve seat. The adhesive in the A adhesive inlet channel and the B adhesive inlet channel flows through the gap between the valve core and the connecting channel, the valve seat, and the gap formed between the stop head and the central through hole on the valve seat, and then flows into the A adhesive dispensing channel and the B adhesive dispensing channel respectively. It then flows out through the A adhesive dispensing port and the B adhesive dispensing port on the dispensing nozzle and enters the mixing tube installed at the lower end of the dispensing nozzle.

[0042] The opening and closing of the glue can be achieved by the extension and retraction of the valve core and the cooperation between the stop head on the valve core and the valve seat. The pneumatic opening and the mechanical closing of the elastic element can generate a certain suction force when closing the glue, thereby relieving the glue pressure in the glue channel and preventing glue overflow after closing. Moreover, the glue closing state can be kept stable without external energy supply, avoiding glue waste caused by abnormal glue dispensing.

[0043] When using the above-mentioned two-component adhesive supply mechanism, it can not only achieve quantitative supply of two-component adhesive liquid, but also open and close the adhesive liquid outlet channel to improve the accuracy of adhesive supply. It can 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 the adhesive. Furthermore, the elastic element ensures the stability of the closed state and avoids waste of adhesive due to abnormal dispensing.

[0044] 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 adhesive dispensing mechanism, comprising: The system includes an A-grade screw valve (91), a B-grade screw valve (92), an A-grade inlet block (2), and a B-grade inlet block (3). The upper end of the A-grade inlet channel (21) on the A-grade inlet block (2) is connected to the outlet of the A-grade screw valve (91). The upper end of the B-grade inlet channel (31) on the B-grade inlet block (3) is connected to the outlet of the B-grade screw valve (92). An A-grade outlet channel (11) is provided between the A-grade inlet block (2) and the B-grade inlet block (3). The dispensing block (1) of the B glue dispensing channel (12) is characterized in that: the lower end of the A glue inlet channel (21) and the upper end of the A glue outlet channel (11), and the lower end of the B glue inlet channel (31) and the upper end of the B glue outlet channel (12) are connected by a horizontally extending connecting channel (4), and a valve seat (41) is installed in each of the connecting channels (4), and one end of a valve core (43) that can move in the horizontal direction passes through the middle of the valve seat (41). A central through hole (42) is provided with a stop head (44) that can seal with the central through hole (42). The other end of the valve core (43) is connected to a piston (5) located on the side opposite to the outlet block (1) of the A glue inlet block (2) or the B glue inlet block (3). The cylindrical part (51) of the piston (5) is connected to the valve core (43). 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 embedded in a drive. The groove on the block (6) is sealed and fitted with the side wall of the groove, thereby forming a drive chamber (61) between the disc part (52) of the piston (5) and the groove. An air pipe connector (62) installed on the drive block (6) communicates with the drive chamber (61). An elastic member (7) fitted on the outside of the column part (51) of the piston (5) and in a compressed state is provided between the disc part (52) of the piston (5) and the corresponding A glue inlet block (2) or B glue inlet block (3).

2. The two-component adhesive supply mechanism according to claim 1, characterized in that: 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).

3. The two-component adhesive supply mechanism according to claim 2, characterized in that: 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).

4. The two-component adhesive supply mechanism according to claim 1, characterized in that: 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 glue outlet block (1).

5. The two-component adhesive supply mechanism according to claim 4, characterized in that: 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).

6. The two-component adhesive supply mechanism according to claim 1, characterized in that: 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 corresponding to the A glue dispensing channel (11) and the B glue dispensing channel (12).

7. The two-component adhesive supply mechanism according to claim 6, characterized in that: The dispensing nozzle (8) is provided with threads for connecting to the mixing tube.

8. The two-component adhesive supply mechanism according to claim 1, characterized in that: An inner chamfer is provided on the valve seat (41) at one end near the valve core (43) in the central through hole (42), and 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.

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