Glue mixing valve of glue dispensing system

Abstract

The invention discloses a glue mixing valve of a glue dispensing system, which comprises a glue A valve body, a glue B valve body, a flow guide block connected with a glue outlet of the glue A valve body and a glue outlet of the glue B valve body, and a glue pipe arranged below the flow guide block and respectively communicated with a glue A flow guide channel and a glue B flow guide channel on the flow guide block, a plurality of first spiral blades arranged at equal intervals in the axial direction and a plurality of second spiral blades in central symmetry with the first spiral blades are arranged on the outer surface of the flow guide rod, and a third spiral blade is arranged on the outer surface of the flow guide rod and located between any two adjacent first spiral blades in the axial direction. According to the glue dispensing device, the glue A and the glue B entering the glue pipe can be mixed for multiple times under the condition that the flow guide rod is not rotated while the glue A and the glue B are mixed and discharged, so that the uniformity and the consistency of mixed glue liquid discharged outwards from the glue discharging nozzle are improved, and the glue dispensing quality is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of dispensing, and particularly to a mixing glue valve for a dispensing system. Background Art

[0002] A dispensing system is a device widely used in the production and manufacturing of the electronics industry, which dispenses glue onto components of electronic devices to protect various circuit boards, chips, buttons, cameras, etc. from the influence of natural environments such as dust, moisture, and corrosion. When dispensing two-component glue, sometimes a dispensing valve is used to mix the two glues and then dispense.

[0003] When mixing two glues with the existing dispensing valves, there are two methods: dynamic glue mixing and static glue mixing. However, the flow guide rod used in the traditional two-component static mixing method cannot achieve multiple mixing of the glue without rotating the flow guide rod, resulting in insufficient glue mixing and unable to ensure the uniformity of the glue liquid after mixing and the quality of dispensing. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a mixing glue valve for a dispensing system, which can achieve multiple mixing of A and B two-component glues entering the glue pipe without rotating the flow guide rod while mixing and discharging the A and B two-component glues, thereby improving the uniformity and consistency of the mixed glue liquid discharged from the glue nozzle and ensuring the quality of dispensing.

[0005] To solve the above technical problem, the technical solution adopted by the present invention is: a mixing glue valve for a dispensing system, comprising: an A glue valve body, a B glue valve body, a flow guide block connecting the glue outlet of the A glue valve body and the glue outlet of the B glue valve body, and a glue pipe disposed below the flow guide block and respectively communicating with the A glue flow channel and the B glue flow channel on the flow guide block. An inlet glue seat is provided between the upper end of the glue pipe and the flow guide block. The upper surface of the inlet glue seat is respectively provided with an A glue inlet hole communicating with the A glue flow channel and a B glue inlet hole communicating with the B glue flow channel. The lower ends of the inclined A glue inlet hole and B glue inlet hole respectively communicate with the glue pipe, and the lower end of the glue pipe is connected with a glue nozzle. A flow guide rod is coaxially disposed in the glue pipe. A plurality of first spiral blades arranged at equal intervals along the axial direction and a plurality of second spiral blades centrosymmetric with the first spiral blades are provided on the outer surface of the flow guide rod. A third spiral blade is provided between any two axially adjacent first spiral blades on the outer surface of the flow guide rod, and a fourth spiral blade centrosymmetric with the third spiral blade is provided between any two axially adjacent second spiral blades on the outer surface of the flow guide rod. The first spiral blades, the third spiral blades, the second spiral blades, and the fourth spiral blades are staggered in the circumferential direction, and the inclination directions of the first spiral blades and the third spiral blades are opposite.

[0006] The further improved solutions in the above technical solutions are as follows: 1. In the above solution, both the A glue valve body and the B glue valve body are screw valves.

[0007] 2. In the above solution, both the A glue diversion channel and the B glue diversion channel further include: a vertical flow channel with an upper end communicating with the glue outlet of the valve body, an inclined flow channel with a lower end communicating with the diversion channel on the diversion block, and a horizontal flow channel connecting the lower end of the vertical flow channel and the upper end of the inclined flow channel.

[0008] 3. In the above solution, the circumferential extension range of each of the first spiral blade and the third spiral blade is 90° to 180° The first spiral blade is inclined downward in the clockwise direction, and the third spiral blade is inclined upward in the clockwise direction.

[0009] 4. In the above solution, a cut-off needle penetrating through the diversion rod is coaxially arranged in the rubber tube. The upper end of the cut-off needle that can move axially up and down passes through the diversion block and is connected to a driving assembly arranged above the diversion block. When the cut-off needle is in the first position, the lower end surface thereof is in sealing contact with the upper end surface of the glue outlet channel in the glue outlet nozzle. When the cut-off needle moves upward to the second position, a glue outlet gap is formed between the lower end surface thereof and the upper end surface of the glue outlet channel in the glue outlet nozzle.

[0010] 5. In the above solution, a glue outlet needle tube is installed on the glue outlet channel opened at the lower part of the glue outlet nozzle. The upper end surface of the glue outlet needle tube with an upper end embedded in the glue outlet channel is lower than the upper end surface of the glue outlet channel or is flush with the upper end surface of the glue outlet channel.

[0011] 6. In the above solution, a sealing ring is installed between the glue inlet seat and the diversion block and on the outer sides of the circumferences of the A glue inlet hole and the B glue inlet hole. The sealing ring is embedded and installed in an annular groove opened on the upper surface of the glue inlet seat.

[0012] Due to the application of the above technical solutions, the present invention has the following advantages compared with the prior art: 1. The mixing glue valve of the dispensing system of the present invention is provided with a glue inlet seat between the upper end of the glue pipe and the diversion block. The upper surface of the glue inlet seat is respectively provided with an A glue inlet hole communicated with the A glue diversion channel and a B glue inlet hole communicated with the B glue diversion channel. The lower ends of the inclined A glue inlet hole and B glue inlet hole are respectively communicated with the glue pipe. The lower end of the glue pipe is connected with a glue outlet nozzle. A diversion rod is coaxially arranged in the glue pipe. A plurality of first spiral blades arranged at equal intervals along the axial direction and a plurality of second spiral blades centrosymmetric with the first spiral blades are arranged on the outer surface of the diversion rod. A third spiral blade is arranged on the outer surface of the diversion rod and between any two axially adjacent first spiral blades. A fourth spiral blade centrosymmetric with the third spiral blade is arranged on the outer surface of the diversion rod and between any two axially adjacent second spiral blades. The first spiral blade, the third spiral blade, the second spiral blade, and the fourth spiral blade are arranged in a staggered manner in the circumferential direction, and the inclination directions of the first spiral blade and the third spiral blade are opposite. While realizing the mixing and discharging of the A and B two-component glues, it is possible to realize multiple mixings of the A and B glues entering the glue pipe without rotating the diversion rod, thereby improving the uniformity and consistency of the mixed glue liquid discharged from the glue outlet nozzle and ensuring the quality of dispensing.

[0013] 2. The mixing glue valve of the dispensing system of the present invention further coaxially arranges a cut-off needle penetrating through the diversion rod in the glue pipe. The upper end of the cut-off needle that can move axially up and down passes through the diversion block and is connected with a driving component arranged above the diversion block. When the cut-off needle is in the first position, the lower end surface of the cut-off needle is in sealed contact with the upper end surface of the glue discharge channel in the glue outlet nozzle. When the cut-off needle moves upward to the second position, a glue discharge gap is formed between the lower end surface of the cut-off needle and the upper end surface of the glue discharge channel in the glue outlet nozzle. It can organically combine static mixing, glue discharging, and glue stopping into one, which not only saves costs and simplifies the occupied space, but also is convenient for loading and unloading operations. As a consumable in the dispensing system, it can be automatically replaced, which is beneficial to improving the overall automation degree and dispensing efficiency of the dispensing system. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] FIG Figure 1 is a schematic diagram of the overall structure of the mixing glue valve of the dispensing system of the present invention; FIG Figure 2 is a three-dimensional sectional structure diagram of the mixing glue valve of the dispensing system of the present invention; FIG Figure 3 is an enlarged view of part A of the present invention Figure 2 ; FIG Figure 4 is an enlarged view of part C of the present invention Figure 2 ; FIG Figure 5 is an enlarged view of part B of the present invention Figure 2 ; FIGFigure 6 This is a partial structural schematic diagram of the mixing glue valve of the dispensing system of the present invention.

[0015] In the above drawings: 1. Glue pipe; 2. Glue inlet seat; 3. Glue outlet nozzle; 31. Glue outlet channel; 32. Glue outlet syringe needle; 41. A glue inlet hole; 42. B glue inlet hole; 5. Cut-off needle; 61. Flow guide rod; 62. First spiral blade; 63. Second spiral blade; 64. Third spiral blade; 65. Fourth spiral blade; 7. Plugging block; 8. Connector; 91. Annular groove; 92. Sealing ring; 11. A glue valve body; 12. B glue valve body; 13. Flow guide block; 131. A glue flow guide channel; 132. B glue flow guide channel; 133. Inclined flow channel; 134. Horizontal flow channel; 135. Vertical flow channel; 14. Glue outlet pipe; 15. Screw rod; 16. Motor; 17. Connecting rod; 18. Flow guide pipe; 19. Thread-like protrusion. Specific embodiments

[0016] The present patent can be further clearly understood through the following specific embodiments given, but they do not limit the present patent.

[0017] Embodiment 1: A mixing glue valve of a dispensing system, comprising: an A glue valve body 11, a B glue valve body 12, a flow guide block 13 connecting the glue outlet of the A glue valve body 11 and the glue outlet of the B glue valve body 12, and a glue pipe 2 arranged below the flow guide block 13 and respectively communicating with the A glue flow guide channel 131 and the B glue flow guide channel 132 on the flow guide block 13. An inlet glue seat 2 is arranged between the upper end of the glue pipe 2 and the flow guide block 13. An A glue inlet hole 41 communicating with the A glue flow guide channel 131 and a B glue inlet hole 42 communicating with the B glue flow guide channel 132 are respectively opened on the upper surface of the inlet glue seat 2. The lower ends of the inclined A glue inlet hole 41 and B glue inlet hole 42 are respectively communicated with the glue pipe 1. The lower end of the glue pipe 2 is connected with a glue outlet nozzle 3; During use, A glue and B glue respectively enter the valve body from the glue inlets of the A glue valve body and the B glue valve body, flow along the directions of the A glue flow guide channel and the B glue flow guide channel, and then respectively enter the glue pipe from the A glue inlet hole and the B glue inlet hole of the inlet glue seat; A guide rod 61 is coaxially arranged inside the rubber hose 1. A plurality of first helical blades 62 arranged at equal intervals along the axial direction and a plurality of second helical blades 63 centrosymmetric with the first helical blades 62 are arranged on the outer surface of the guide rod 61. A third helical blade 64 is arranged on the outer surface of the guide rod 61 between any two axially adjacent first helical blades 62. A fourth helical blade 65 centrosymmetric with the third helical blade 64 is arranged on the outer surface of the guide rod 61 between any two axially adjacent second helical blades 63. The first helical blades 62, the third helical blades 64, the second helical blades 63, and the fourth helical blades 65 are staggered in the circumferential direction, and the inclination directions of the first helical blades 62 and the third helical blades 64 are opposite.

[0018] The above-mentioned A rubber valve body 11 and B rubber valve body 12 are both screw valves.

[0019] The above-mentioned A rubber guide channel 131 and B rubber guide channel 132 further include: a vertical flow channel 135 with the upper end communicating with the rubber outlet of the valve body, an inclined flow channel 133 with the lower end communicating with the guide channel on the guide block 13, and a horizontal flow channel 134 connecting the lower end of the vertical flow channel 135 and the upper end of the inclined flow channel 133.

[0020] The circumferential extension range of each of the above-mentioned first helical blades 62 and third helical blades 64 is 90° to 180° A cut-off needle 5 penetrating the guide rod 61 is coaxially arranged inside the rubber hose 1. The upper end of the cut-off needle 5 that can move up and down along the axial direction passes through the guide block 13 and is connected to a driving assembly arranged above the guide block 13. When the cut-off needle 5 is in the first position, the lower end surface of the cut-off needle 5 is in sealing contact with the upper end surface of the rubber outlet channel 31 in the rubber outlet nozzle 3. When the cut-off needle 5 moves upward to the second position, a rubber outlet gap is formed between the lower end surface of the cut-off needle 5 and the upper end surface of the rubber outlet channel 31 in the rubber outlet nozzle 3; Moreover, the opening and closing of the rubber outlet channel are realized by the up and down movement of the cut-off needle, so as to control the rubber outlet timing according to the requirements of dispensing; After using it for a period of time, it needs to be replaced to ensure the quality of dispensing. At this time, only the whole needs to be taken out from the dispensing equipment and a new one can be installed. The whole process can be realized by mechanical automation without manual intervention.

[0021] A rubber outlet needle tube 32 is installed on the rubber outlet channel 31 opened at the lower part of the rubber outlet nozzle 3. The upper end surface of the rubber outlet needle tube 32 embedded in the upper end of the rubber outlet channel 31 is lower than the upper end surface of the rubber outlet channel 31 or flush with the upper end surface of the rubber outlet channel 31.

[0022] A sealing ring 92 is installed between the above-mentioned glue inlet seat 2 and the diversion block 13 and on the outer sides of the circumferences of the A-glue inlet hole 41 and the B-glue inlet hole 42. The sealing ring 92 is embedded in an annular groove 91 opened on the upper surface of the glue inlet seat 2.

[0023] The above-mentioned driving component is a cylinder.

[0024] A blocking block 7 is arranged above the above-mentioned rubber tube 1, and the blocking block 7 is embedded and installed in the glue inlet seat 2.

[0025] The upper end of the above-mentioned diversion rod 61 is installed on the blocking block 7 through a connector 8.

[0026] The upper end of the above-mentioned connector 8 is embedded and installed in the blocking block 7.

[0027] Embodiment 2: A mixing glue valve of a dispensing system, comprising: an A-glue valve body 11, a B-glue valve body 12, a diversion block 13 connecting the glue outlet of the A-glue valve body 11 and the glue outlet of the B-glue valve body 12, and a rubber tube 2 arranged below the diversion block 13 and respectively communicated with the A-glue diversion channel 131 and the B-glue diversion channel 132 on the diversion block 13. An inlet seat 2 is arranged between the upper end of the rubber tube 2 and the diversion block 13. An A-glue inlet hole 41 communicated with the A-glue diversion channel 131 and a B-glue inlet hole 42 communicated with the B-glue diversion channel 132 are respectively opened on the upper surface of the inlet seat 2. The lower ends of the inclined A-glue inlet hole 41 and B-glue inlet hole 42 are respectively communicated with the rubber tube 1. The lower end of the rubber tube 2 is connected with a glue outlet nozzle 3; A diversion rod 61 is coaxially arranged in the rubber tube 1. A plurality of first spiral blades 62 arranged at equal intervals along the axial direction and a plurality of second spiral blades 63 centrosymmetric with the first spiral blades 62 are arranged on the outer surface of the diversion rod 61. A third spiral blade 64 is arranged on the outer surface of the diversion rod 61 and between any two axially adjacent first spiral blades 62. A fourth spiral blade 65 centrosymmetric with the third spiral blade 64 is arranged on the outer surface of the diversion rod 61 and between any two axially adjacent second spiral blades 63. The first spiral blades 62, the third spiral blades 64, the second spiral blades 63, and the fourth spiral blades 65 are staggered in the circumferential direction, and the inclination directions of the first spiral blades 62 and the third spiral blades 64 are opposite; The A-glue inlet hole and the B-glue inlet hole respectively enter the rubber tube, and pass through the channels formed by the 4 groups of spiral blades in the rubber tube to realize multiple commutation and mixing, improve the mixing efficiency and uniformity, and finally the mixed glue liquid is output outward through the glue outlet channel on the glue outlet nozzle to realize the dispensing operation.

[0028] The above-mentioned A-glue valve body 11 and B-glue valve body 12 are both screw valves.

[0029] The above-mentioned A glue valve body 11 and B glue valve body 12 further include: a glue outlet pipe 14, a screw rod 15 located inside the glue outlet pipe 14, and a motor 16 located above the glue outlet pipe 14. The upper end of the screw rod 15 extending along the length direction of the glue outlet pipe 14 is connected to the motor 16 through a connecting rod 17, and the other end of the connecting rod 17 is connected to the output shaft of the motor 16.

[0030] A flow guiding pipe 18 is arranged between the above-mentioned screw rod 15 and the glue outlet pipe 14, and thread-like protrusions 19 matching the screw rod 15 are arranged on the inner wall of the flow guiding pipe 18.

[0031] The circumferential extension range of each of the above-mentioned first spiral blades 62 and third spiral blades 64 is 90° - 180° The above-mentioned first spiral blade 62 is inclined downward in the clockwise direction, and the third spiral blade 64 is inclined upward in the clockwise direction.

[0032] A sealing ring 92 is installed between the above-mentioned glue inlet seat 2 and the flow guiding block 13 and on the outer sides of the circumferences of the A glue inlet hole 41 and B glue inlet hole 42. The sealing ring 92 is embedded in an annular groove 91 opened on the upper surface of the glue inlet seat 2.

[0033] The upper part of the above-mentioned glue outlet nozzle 3 is sleeved on the outer side of the lower end of the glue pipe 1.

[0034] The above-mentioned A glue inlet hole 41 and B glue inlet hole 42 are symmetrically arranged on both sides of the cut-off needle 5.

[0035] The working principle of the present invention is as follows: During use, A glue and B glue respectively enter the valve body from the glue inlet of the A glue valve body and B glue valve body, flow along the directions of the A glue flow guiding channel and B glue flow guiding channel, and then respectively enter the glue pipe from the A glue inlet hole and B glue inlet hole of the glue inlet seat. The channels formed by 4 groups of spiral blades in the glue pipe are used to achieve multiple commutation and mixing, improving the mixing efficiency and uniformity. Finally, the mixed glue liquid is output outward from the glue outlet channel on the glue outlet nozzle to achieve the dispensing operation; Moreover, the opening and closing of the glue outlet channel are realized by the up and down movement of the cut-off needle, so as to cooperate with the dispensing requirements to control the glue outlet timing; After using for a period of time, it needs to be replaced to ensure the dispensing quality. At this time, only the whole needs to be taken out from the dispensing equipment and a new one can be installed. The whole process can be realized by mechanical automation without manual intervention When using the mixing glue valve of the above-mentioned dispensing system, while realizing the mixing and dispensing of the A and B two-component glues, it can achieve multiple mixings of the A and B glues entering the rubber tube without rotating the diversion rod, thereby improving the uniformity and consistency of the mixed glue liquid discharged from the glue nozzle, and ensuring the quality of dispensing; further, it organically combines static glue mixing, glue dispensing and glue stopping into one, which not only saves costs and streamlines the occupied space, but also facilitates loading and unloading operations. As a consumable in the dispensing system, it can be automatically replaced, which is beneficial to improving the overall automation degree and dispensing efficiency of the dispensing system.

[0036] The above embodiments are only used to illustrate the technical concept and characteristics of the present invention, and their purpose is to enable those who are familiar with this technology to understand the content of the present invention and implement it accordingly, and cannot be used to limit the protection scope of the present invention. All equivalent changes or modifications made according to the spirit and essence of the present invention should be covered within the protection scope of the present invention.

Claims

1. A mixing glue valve of a dispensing system, comprising: A glue valve body (11), B glue valve body (12), a diversion block (13) connecting the glue outlet of the A glue valve body (11) and the glue outlet of the B glue valve body (12), and a rubber tube (2) arranged below the diversion block (13) and communicating with the A glue diversion channel (131) and the B glue diversion channel (132) on the diversion block (13) respectively. There is a glue inlet seat (2) between the upper end of the rubber tube (2) and the diversion block (13). The upper surface of the glue inlet seat (2) is respectively provided with an A glue inlet hole (41) communicating with the A glue diversion channel (131) and a B glue inlet hole (42) communicating with the B glue diversion channel (132). The lower ends of the inclined A glue inlet hole (41) and B glue inlet hole (42) are respectively communicated with the rubber tube (1). The lower end of the rubber tube (2) is connected with a glue outlet nozzle (3); It is characterized in that: a diversion rod (61) is coaxially arranged in the rubber tube (1). A plurality of first spiral blades (62) arranged at equal intervals along the axis and a plurality of second spiral blades (63) centrosymmetric with the first spiral blades (62) are arranged on the outer surface of the diversion rod (61). A third spiral blade (64) is arranged on the outer surface of the diversion rod (61) and between any two axially adjacent first spiral blades (62). A fourth spiral blade (65) centrosymmetric with the third spiral blade (64) is arranged on the outer surface of the diversion rod (61) and between any two axially adjacent second spiral blades (63). The first spiral blades (62), the third spiral blades (64), the second spiral blades (63), and the fourth spiral blades (65) are staggered in the circumferential direction, and the inclination directions of the first spiral blades (62) and the third spiral blades (64) are opposite.

2. The mixing glue valve of the dispensing system according to claim 1, characterized in that: Both the A glue valve body (11) and the B glue valve body (12) are screw valves; Both the A glue valve body (11) and the B glue valve body (12) further include: a glue outlet pipe (14), a screw rod (15) located in the glue outlet pipe (14), and a motor (16) located above the glue outlet pipe (14). The upper end of the screw rod (15) extending along the length direction of the glue outlet pipe (14) is connected to the motor (16) through a connecting rod (17), and the other end of the connecting rod (17) is connected to the output shaft of the motor (16); A diversion pipe (18) is arranged between the screw rod (15) and the glue outlet pipe (14), and a thread-like protrusion (19) matching the screw rod (15) is arranged on the inner wall of the diversion pipe (18).

3. The mixing glue valve of the dispensing system according to claim 1 or 2, characterized in that: Both the A glue diversion channel (131) and the B glue diversion channel (132) further include: a vertical flow channel (135) with the upper end communicating with the valve body glue outlet, an inclined flow channel (133) with the lower end communicating with the diversion channel on the diversion block (13), and a horizontal flow channel (134) connecting the lower end of the vertical flow channel (135) and the upper end of the inclined flow channel (133).

4. The mixing glue valve of the dispensing system according to claim 1, wherein: The circumferential extension range of each of the first spiral blades (62) and the third spiral blades (64) is 90° - 180°; The first helical blade (62) is inclined downward in the clockwise direction, and the third helical blade (64) is inclined upward in the clockwise direction.

5. The mixing glue valve of the dispensing system according to claim 1 or 2, characterized in that: A stop needle (5) coaxially arranged in the rubber hose (1) penetrates through a guide rod (61). The upper end of the stop needle (5) that can move up and down along the axis passes through a guide block (13) and is connected to a driving assembly arranged above the guide block (13). When the stop needle (5) is in the first position, the lower end surface thereof is in sealing contact with the upper end surface of the glue outlet channel (31) in the glue outlet nozzle (3). When the stop needle (5) moves upward to the second position, a glue outlet gap is formed between the lower end surface thereof and the upper end surface of the glue outlet channel (31) in the glue outlet nozzle (3).

6. The mixing glue valve of the dispensing system according to claim 2, wherein: A glue outlet needle tube (32) is installed on the glue outlet channel (31) opened at the lower part of the glue outlet nozzle (3). The upper end surface of the glue outlet needle tube (32) with the upper end embedded in the glue outlet channel (31) is lower than the upper end surface of the glue outlet channel (31) or flush with the upper end surface of the glue outlet channel (31).

7. The mixing glue valve of the dispensing system according to claim 1, wherein: A sealing ring (92) is installed between the glue inlet seat (2) and the guide block (13) and on the outer sides of the circumferences of the A glue inlet hole (41) and the B glue inlet hole (42). The sealing ring (92) is embedded and installed in an annular groove (91) opened on the upper surface of the glue inlet seat (2).

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