Online quick change feed mechanism for dual valve dispensing machine
Patent Information
- Application Number
- CN202611179727.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-13
- Publication Date
- 2026-09-01
AI Technical Summary
在旧胶筒移除、新胶筒安装的过程中，点胶阀内部流道会短暂暴露于空气中，或经历压力骤降，导致重新供胶时前端胶液出现气泡、干结颗粒或浓度不均等问题
1、本发明用于双阀点胶机的在线快换供料机构，其进胶块朝向供胶块一端的侧端面上安装有一内设有连通流道的连接块，供胶块朝向连接块的侧表面上开设有一第一安装孔，上端与供胶筒的出胶口连通的供胶流道的下端与该第一安装孔连通，一水平延伸的供胶连接件的一端嵌入安装于第一安装孔内，供胶连接件上开设有一沿水平方向贯通的通孔，通孔靠近供胶流道的一端安装有一具有第一中央通孔的供胶螺帽，一水平设置于通孔内的第一弹簧的一端与供胶螺帽的端面接触，第一弹簧的另一端设置有一第一球体，通孔中部的内壁设置为与第一球体配合的斜坡面，使得第一球体可在处于挤压状态的第一弹簧的作用下与在远离供胶螺帽的方向上向内倾斜的斜坡面挤压接触，连接块朝向供胶块的侧表面上上开设有一与连通流道连通的第二安装孔，一水平延伸的进胶连接件的一端嵌入安装于第二安装孔内且该进胶连接件位于第二安装孔内一端的端面上开设有一流道孔，进胶连接件的另一端与流道孔之间开设有一内径小于流道孔内径的过渡流道，该过渡流道与流道孔之间通过一锥形通孔连通，流道孔相背于过渡流道的一端安装有一具有第二中央通孔的进胶螺帽，该进胶螺帽的端面与一设置于锥形通孔内的第二球体之间水平设置有一处于挤压状态的第二弹簧，使得直径大于过渡流道内径的第二球体可与锥形通孔的内壁挤压接触，当进胶连接件远离第二安装孔的一端穿入通孔内并与于通孔内的第一球体挤压接触时，第一球体与通孔内壁的斜坡面之间形成一间隙，从而使得过渡流道的一端与供胶块上的供胶流道连通，可以实现点胶的阀本体与供胶筒之间的快速拆卸与连接以便于更换供胶筒为阀本体持续供胶，且在对供胶筒进行更换的过程中，既可以实现阀本体上进胶块与新供胶筒上供胶块内部胶液流道的快速连通，又可以在阀本体与旧供胶筒分离时，同时实现对旧供胶筒上供胶块和阀本体上进胶块内部流道的快速截止，从而既避免胶液外溢导致的浪费和对待点胶产品的损害，又可以保持更换供胶筒前后出胶流道内胶液的稳定性与一致性，进而保证点胶品质的一致。
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Figure CN122665741A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of dispensing technology, and in particular to an online quick-change feeding mechanism for a dual-valve dispensing machine. Background Technology
[0002] In precision fluid dispensing applications, such as consumer electronics, semiconductor packaging, and SMT assembly, dispensing valves are commonly used in conjunction with dispensing cartridges to apply adhesive quantitatively and precisely at specific points. When the adhesive in the cartridge is depleted, the system needs to be stopped and the cartridge replaced. Traditional dispensing assemblies present several significant problems when replacing the cartridge: First, the replacement process is cumbersome, and the connection accuracy is difficult to guarantee. The outlet of the glue cartridge and the inlet of the dispensing valve are usually connected by threads or clamps, requiring special tools for disassembly and assembly, which is time-consuming. More importantly, after replacing the glue cartridge, repeated adjustments are needed to restore the positional accuracy of the dispensing valve and the glue cartridge flow channel. Otherwise, it can easily lead to flow channel misalignment and seal failure, affecting the stability and consistency of the dispensing volume, and consequently reducing product yield.
[0003] Secondly, the replacement process carries the risk of adhesive leakage and contamination. At the moment of separating the old glue cartridge from the dispensing valve, residual pressure inside the cartridge and residual adhesive within the valve body may overflow or drip from the break point. This not only results in expensive adhesive waste, but the dripping adhesive may also contaminate the product to be dispensed, the equipment platform, and sensors, leading to serious product defects and equipment malfunctions.
[0004] Furthermore, when the adhesive circuit is disconnected and then reconnected, the adhesive state is unstable. During the removal of the old adhesive cartridge and the installation of the new one, the internal flow channel of the dispensing valve may be briefly exposed to air or experience a sudden pressure drop, leading to problems such as air bubbles, dried particles, or uneven concentration of the adhesive at the front end when re-dispensing. This requires additional processes such as pre-dispensing and wiping the nozzle to restore dispensing stability, further reducing production efficiency and increasing material and labor costs. Summary of the Invention
[0005] The technical problem to be solved by the present invention is to provide an online quick-change feeding mechanism for a dual-valve dispensing machine. This feeding mechanism can realize quick disassembly and quick connection between the dispensing valve body and the dispensing cylinder to facilitate the replacement of the dispensing cylinder to continuously supply glue to the valve body, and the connection has good stability, thereby improving the stability of glue supply from the dispensing cylinder to the valve body and the dispensing of glue from the valve body.
[0006] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: an online quick-change feeding mechanism for a dual-valve dispensing machine, comprising: a dispensing cylinder, a valve body located on one side of the dispensing cylinder, and a glue inlet block installed on the lower end face of the valve body. The glue inlet block has interconnected glue inlet channels and glue outlet channels. A dispensing block with a dispensing channel is connected to the lower end of the dispensing cylinder. A connecting block with a connecting channel is installed on the side face of the glue inlet block facing the dispensing block. A first mounting hole is formed on the side face of the dispensing block facing the connecting block. The lower end of the dispensing channel, whose upper end communicates with the glue outlet of the dispensing cylinder, is connected to the first mounting hole. A horizontally extending glue supply connector is installed at one end in the first mounting hole. The glue supply connector has a through hole extending horizontally. A glue supply nut with a first central through hole is installed at the end of the through hole near the glue supply channel. One end of a first spring horizontally disposed in the through hole contacts the end face of the glue supply nut. A first ball is disposed at the other end of the first spring. The inner wall of the middle part of the through hole is configured as a slope surface that cooperates with the first ball, so that the first ball can be squeezed and contacted by the slope surface that is inclined inward in the direction away from the glue supply nut under the action of the first spring in the compression state. The connecting block has a second mounting hole on its side surface facing the glue supply block, which communicates with the flow channel. One end of a horizontally extending glue inlet connector is embedded in the second mounting hole, and a flow channel hole is formed on the end face of the glue inlet connector located in the second mounting hole. A transition flow channel with an inner diameter smaller than the inner diameter of the flow channel hole is formed between the other end of the glue inlet connector and the flow channel hole. The transition flow channel and the flow channel hole are connected by a tapered through hole. A second intermediate... The glue inlet nut of the central through hole has a second spring in a compression state horizontally arranged between the end face of the glue inlet nut and a second ball disposed in the tapered through hole, so that the second ball, whose diameter is larger than the inner diameter of the transition flow channel, can be pressed into contact with the inner wall of the tapered through hole. When the end of the glue inlet connector away from the second mounting hole is inserted into the through hole and pressed into contact with the first ball in the through hole, a gap is formed between the first ball and the slope surface of the inner wall of the through hole, thereby making one end of the transition flow channel connected to the glue supply flow channel on the glue supply block; The glue supply cylinder is embedded in a support base. A first magnet is installed on the side of the support base facing the valve body. A second magnet that cooperates with the first magnet is installed on the side of a fixing block installed on the valve body facing the support base. The first magnet and the second magnet are respectively embedded in receiving grooves opened on the support base and the fixing block.
[0007] The following are further improvements to the above technical solution: 1. In the above scheme, the outer surface of the glue supply connector and the inner wall of the first mounting hole, and the outer surface of the glue inlet connector and the inner wall of the second mounting hole are both connected by threads.
[0008] 2. In the above scheme, the outer surface of the glue supply nut and the inner wall of the through hole on the glue supply connector, and the outer surface of the glue inlet nut and the inner wall of the flow channel hole are all connected by threads.
[0009] 3. In the above scheme, a sealing ring is provided between the outer surface of the glue inlet connector and the inner wall of the through hole on the glue supply connector.
[0010] 4. In the above scheme, when one end of the transition channel is connected to the glue supply channel on the glue supply block, the first magnet and the second magnet are attracted and fixed.
[0011] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art: 1. The present invention relates to an online quick-change feeding mechanism for a dual-valve dispensing machine. A connecting block with a connecting channel is installed on the side face of the glue inlet block facing the glue supply block. A first mounting hole is formed on the side face of the glue supply block facing the connecting block. The lower end of the glue supply channel, whose upper end is connected to the glue outlet of the glue supply cylinder, is connected to the first mounting hole. One end of a horizontally extending glue supply connector is embedded in the first mounting hole. A through hole is formed on the glue supply connector, and a glue supply nut with a first central through hole is installed at the end of the through hole near the glue supply channel. One end of a first spring horizontally disposed in the through hole is connected to the end of the glue supply nut. The first spring has a first ball at one end, and the inner wall of the through hole is set as a ramp surface that mates with the first ball. This allows the first ball to be pressed into contact with the ramp surface that is inclined inward in the direction away from the glue supply nut under the action of the first spring in a compressed state. A second mounting hole communicating with the flow channel is opened on the side surface of the connecting block facing the glue supply block. One end of a horizontally extending glue inlet connector is embedded in the second mounting hole, and a flow channel hole is opened on the end face of the glue inlet connector located in the second mounting hole. A passage with an inner diameter smaller than the inner diameter of the flow channel hole is opened between the other end of the glue inlet connector and the flow channel hole. The transition channel is connected to the channel hole via a tapered through-hole. A glue-infeed nut with a second central through-hole is installed at the end of the channel hole opposite to the transition channel. A second spring, under compression, is horizontally positioned between the end face of the glue-infeed nut and a second sphere disposed within the tapered through-hole. This allows the second sphere, with a diameter larger than the inner diameter of the transition channel, to press against the inner wall of the tapered through-hole. When the end of the glue-infeed connector away from the second mounting hole penetrates into the through-hole and presses against the first sphere within the through-hole, a gap is formed between the first sphere and the sloped surface of the through-hole's inner wall. This allows one end of the transition channel to contact the glue supply block. The connected glue flow channels allow for quick disassembly and connection between the dispensing valve body and the glue supply cylinder, facilitating continuous glue supply to the valve body when the glue supply cylinder is replaced. During glue supply cylinder replacement, the glue flow channels within the glue inlet block on the valve body and the glue supply block on the new glue supply cylinder are quickly connected. Furthermore, when the valve body is separated from the old glue supply cylinder, the flow channels within the glue supply blocks on both the old and new glue supply cylinders are quickly shut off. This avoids glue spillage and waste, as well as damage to the dispensing product, while maintaining the stability and consistency of the glue flow channels before and after glue supply cylinder replacement, thus ensuring consistent dispensing quality.
[0012] 2. This invention relates to an online quick-change feeding mechanism for a dual-valve dispensing machine. The dispensing cylinder is embedded in a support base. A first magnet is mounted on the side of the support base facing the valve body. A second magnet, which cooperates with the first magnet, is mounted on a fixing block on the valve body facing the support base. When one end of the transition channel connects with the dispensing channel on the dispensing block, the first and second magnets are attracted and fixed. This facilitates the disassembly and replacement of the dispensing cylinder connected to the valve body, while achieving a quick and stable connection between the valve body and the dispensing cylinder, thereby improving the stability of dispensing adhesive from the dispensing cylinder to the valve body and the dispensing process of the valve body. Furthermore, the support base and the fixing block are connected by at least two sets of pins and positioning holes for pin insertion. This further improves the stability of the connection between the valve body and the dispensing cylinder, as well as the assembly accuracy and positional accuracy of the dispensing connectors before and after replacing the dispensing cylinder, thus further improving the dispensing stability. Attached Figure Description
[0013] Appendix Figure 1 This is a schematic diagram of the overall structure of the online quick-change feeding mechanism for a dual-valve dispensing machine according to the present invention; Appendix Figure 2 This is a cross-sectional view of the overall structure of the online quick-change feeding mechanism for a dual-valve dispensing machine according to the present invention; Appendix Figure 3 Appendix to this invention Figure 2 Enlarged view of point A in the middle; Appendix Figure 4 Appendix to this invention Figure 2 Enlarged view of point B in the middle; Appendix Figure 5 Appendix to this invention Figure 4 Enlarged view of point C in the middle; Appendix Figure 6 This is a partial structural breakdown diagram of the feeding mechanism of the present invention.
[0014] In the attached diagrams: 1. Glue supply block; 2. Connecting block; 3. Glue supply channel; 4. Connecting channel; 5. First mounting hole; 6. Glue supply connector; 61. Through hole; 7. Glue supply nut; 71. First central through hole; 8. First spring; 9. First sphere; 10. Flow channel hole; 11. Tapered through hole; 12. Glue inlet nut; 121. Second central through hole; 13. Second sphere; 14. Second spring; 15. Second mounting hole ; 16. Glue inlet connector; 161. Transition channel; 17. Sealing ring; 181. Support base; 182. Fixing block; 191. First magnet; 192. Second magnet; 201. Pin; 202. Positioning hole; 21. Glue supply cylinder; 211. Glue outlet; 22. Valve body; 23. Glue inlet block; 231. Glue inlet channel; 232. Glue outlet channel; 24. Connecting nozzle; 25. Air inlet nozzle; 26. Receiving groove. Detailed Implementation
[0015] The present patent can be further understood through the specific embodiments given below, but they are not intended to limit the present patent.
[0016] Example 1: A dispensing assembly for easy cartridge replacement includes: a dispensing cartridge 21, a valve body 22 located on one side of the dispensing cartridge 21, and a dispensing block 23 installed on the lower end face of the valve body 22. The dispensing block 23 has a dispensing channel 231 and a dispensing channel 232 that are interconnected. A dispensing block 1 with a dispensing channel 3 is connected to the lower end of the dispensing cartridge 21. A connecting block 2 with a connecting channel 4 is installed on the side face of the dispensing block 23 facing the dispensing block 1. A first mounting hole 5 is opened on the side face of the dispensing block 1 facing the connecting block 2. The lower end of the dispensing channel 3, whose upper end is connected to the dispensing port 211 of the dispensing cartridge 21, is connected to the first mounting hole 5. One end of the horizontally extending glue supply connector 6 is embedded in the first mounting hole 5. The glue supply connector 6 has a through hole 61 that runs horizontally through it. A glue supply nut 7 with a first central through hole 71 is installed at one end of the through hole 61 near the glue supply channel 3. One end of a first spring 8, which is horizontally disposed in the through hole 61, contacts the end face of the glue supply nut 7. A first ball 9 is disposed at the other end of the first spring 8. The inner wall of the middle part of the through hole 61 is configured as a slope surface that cooperates with the first ball 9, so that the first ball 9 can be squeezed and contacted by the slope surface that is inclined inward in the direction away from the glue supply nut 7 under the action of the first spring 8 in the compression state. When replacement is needed, remove the glue supply tube, glue supply block and support from the opposite direction to the connecting block, then remove the glue tube that needs to be replaced and replace it with a new glue tube. At this time, the glue supply block is separated from the connecting block and the connecting needle exits the glue supply channel. During the above process, the first ball inside the glue supply connector is squeezed and contacts the through hole under the compression of the first spring, blocking the channel for the glue to flow outward. This can stop the glue from overflowing when changing the glue cartridge, thus reducing glue waste. The connecting block 2 has a second mounting hole 15 on its side surface facing the glue supply block 1, which communicates with the connecting channel 4. One end of a horizontally extending glue inlet connector 16 is embedded in the second mounting hole 15, and a flow channel hole 10 is formed on the end face of the glue inlet connector 16 located in the second mounting hole 15. A transition flow channel 161 with an inner diameter smaller than the inner diameter of the flow channel hole 10 is formed between the other end of the glue inlet connector 16 and the flow channel hole 10. The transition flow channel 161 is connected to the flow channel hole 10 through a tapered through hole 11. A second central... The glue inlet nut 12 of the through hole 121 has a second spring 14 in a compression state horizontally disposed between the end face of the glue inlet nut 12 and a second ball 13 disposed in the tapered through hole 11, so that the second ball 13, whose diameter is larger than the inner diameter of the transition channel 161, can be pressed into contact with the inner wall of the tapered through hole 11. When the end of the glue inlet connector 16 away from the second mounting hole 15 is inserted into the through hole 61 and pressed into contact with the first ball 9 in the through hole 61, a gap is formed between the first ball 9 and the slope surface of the inner wall of the through hole 61, thereby making one end of the transition channel 161 connected to the glue supply channel 3 on the glue supply block 1. When installation is required, align the glue inlet connector with the glue supply connector and move it towards the glue supply connector. As the glue inlet connector moves further into the glue supply connector, the first ball presses against the glue inlet connector and pushes it away from the through hole, creating a gap between the first ball and the through hole. The glue then enters the transition channel of the glue inlet connector from the through hole.
[0017] The outer surface of the glue supply connector 6 and the inner wall of the first mounting hole 5, and the outer surface of the glue inlet connector 16 and the inner wall of the second mounting hole 15 are all connected by threads.
[0018] The outer surface of the glue supply nut 7 and the inner wall of the through hole 61 on the glue supply connector 6, and the outer surface of the glue inlet nut 12 and the inner wall of the flow channel hole 10 are all connected by threads.
[0019] A sealing ring 17 is provided between the outer surface of the glue inlet connector 16 and the inner wall of the through hole 61 on the glue supply connector 6.
[0020] The aforementioned glue supply cylinder 21 is embedded in a support base 181. A first magnet 191 is installed on the side of the support base 181 facing the valve body 22. A second magnet 192 that cooperates with the first magnet 191 is installed on the side of a fixing block 182 installed on the valve body 22 facing the support base 181. When one end of the transition channel 161 is connected to the glue supply channel 3 on the glue supply block 1, the first magnet 191 and the second magnet 192 are attracted and fixed. When the transition channel is connected to the glue supply channel, the first magnet on the support base and the second magnet on the fixing block are attracted and fixed, which can realize the quick disassembly and fixed installation of the glue tube.
[0021] Both the first magnet 191 and the second magnet 192 mentioned above are electromagnets.
[0022] The valve body 22 mentioned above is a piezoelectric ceramic injection valve body.
[0023] An air inlet 25 is installed at the upper end of the aforementioned glue supply cylinder 21.
[0024] The first magnet 191 and the second magnet 192 are respectively embedded in the receiving grooves 26 opened on the support base 181 and the fixing block 182.
[0025] The aforementioned adhesive supply block 1 is integrally formed on the lower part of the support base 181.
[0026] Example 2: A quick-release fluid dispensing mechanism includes: a glue supply cylinder 21, a valve body 22 located on one side of the glue supply cylinder 21, and a glue inlet block 23 installed on the lower end face of the valve body 22. The glue inlet block 23 has a glue inlet channel 231 and a glue outlet channel 232 that are interconnected. A glue supply block 1 with a glue supply channel 3 is connected to the lower end of the glue supply cylinder 21. A connecting block 2 with a connecting channel 4 is installed on the side face of the glue inlet block 23 facing the glue supply block 1. A first mounting hole 5 is opened on the side face of the glue supply block 1 facing the connecting block 2. The lower end of the glue supply channel 3, whose upper end is connected to the glue outlet 211 of the glue supply cylinder 21, is connected to the first mounting hole 5. One end of the flat-extending glue supply connector 6 is embedded in the first mounting hole 5. The glue supply connector 6 has a through hole 61 extending horizontally. A glue supply nut 7 with a first central through hole 71 is installed at one end of the through hole 61 near the glue supply channel 3. One end of a first spring 8 horizontally disposed in the through hole 61 contacts the end face of the glue supply nut 7. A first ball 9 is disposed at the other end of the first spring 8. The inner wall of the middle part of the through hole 61 is configured as a slope surface that cooperates with the first ball 9, so that the first ball 9 can be squeezed and contacted by the slope surface that is inclined inward in the direction away from the glue supply nut 7 under the action of the first spring 8 in the compression state. When replacement is needed, remove the glue supply tube and glue supply block from the opposite direction to the connecting block, then remove the glue tube that needs to be replaced and replace it with a new glue tube. At this time, the glue supply block and the connecting block are separated, and the connecting pin exits the glue supply channel. The connecting block 2 has a second mounting hole 15 on its side surface facing the glue supply block 1, which communicates with the connecting channel 4. One end of a horizontally extending glue inlet connector 16 is embedded in the second mounting hole 15, and a flow channel hole 10 is formed on the end face of the glue inlet connector 16 located in the second mounting hole 15. A transition flow channel 161 with an inner diameter smaller than the inner diameter of the flow channel hole 10 is formed between the other end of the glue inlet connector 16 and the flow channel hole 10. The transition flow channel 161 is connected to the flow channel hole 10 through a tapered through hole 11. A second intermediate... The glue inlet nut 12 of the central through hole 121 has a second spring 14 in a compression state horizontally disposed between the end face of the glue inlet nut 12 and a second ball 13 disposed in the tapered through hole 11, so that the second ball 13, whose diameter is larger than the inner diameter of the transition flow channel 161, can be pressed into contact with the inner wall of the tapered through hole 11. When the end of the glue inlet connector 16 away from the second mounting hole 15 is inserted into the through hole 61 and pressed into contact with the first ball 9 in the through hole 61, a gap is formed between the first ball 9 and the slope surface of the inner wall of the through hole 61, thereby making one end of the transition flow channel 161 connected to the glue supply flow channel 3 on the glue supply block 1. After the adhesive enters the transition channel of the adhesive connector through the through hole, the second ball inside the tapered through hole is pressed against the inner wall of the tapered through hole by the compression of the second spring, thereby preventing the adhesive from entering the connecting channel before dispensing and avoiding adhesive overflow during installation.
[0027] The outer surface of the glue supply connector 6 and the inner wall of the first mounting hole 5, and the outer surface of the glue inlet connector 16 and the inner wall of the second mounting hole 15 are all connected by threads.
[0028] The outer surface of the glue supply nut 7 and the inner wall of the through hole 61 on the glue supply connector 6, and the outer surface of the glue inlet nut 12 and the inner wall of the flow channel hole 10 are all connected by threads.
[0029] The aforementioned glue supply cylinder 21 is embedded in a support base 181. A first magnet 191 is installed on the side of the support base 181 facing the valve body 22. A second magnet 192 that cooperates with the first magnet 191 is installed on the side of a fixing block 182 installed on the valve body 22 facing the support base 181. When one end of the transition channel 161 is connected to the glue supply channel 3 on the glue supply block 1, the first magnet 191 and the second magnet 192 are attracted and fixed.
[0030] Both the first magnet 191 and the second magnet 192 mentioned above are strong magnets.
[0031] The aforementioned support base 181 and fixing block 182 are connected by at least two sets of pins 201 and positioning holes 202 into which the pins 201 can be inserted; Inserting the pin into the positioning hole to fix the support base and the fixing block can achieve stable installation of the glue tube, avoid the glue tube shaking during the glue dispensing process, and thus improve the quality and efficiency of glue dispensing.
[0032] The two pins 201 installed on the support base 181 are respectively located on the upper and lower sides of the first magnet 191, and the two positioning holes 202 corresponding to those opened on the fixing block 182 are respectively located on the upper and lower sides of the second magnet 192.
[0033] Each of the aforementioned pins 201 has an outer chamfer at one end near the positioning hole 202.
[0034] The glue outlet 211 at the lower end of the glue supply cylinder 21 is connected to the glue supply channel 3 on the glue supply block 1 through a connecting nozzle 24.
[0035] The valve body 22 mentioned above is the injection valve body.
[0036] The lower end of the inclined connecting channel 4 is connected to one end of the horizontally extending glue inlet channel 231 on the glue inlet block 23, which is opposite to the glue outlet channel 232.
[0037] A sealing ring 17 is provided between the connecting block 2 and the glue inlet block 23 and on the outside of the connection between the connecting channel 4 and the glue inlet channel 231.
[0038] The second mounting hole 15 is connected to the upper end of the connecting channel 4.
[0039] The working principle of this invention is as follows: When replacement is needed, move the old glue supply cylinder in the opposite direction to the valve body, separate the glue supply block from the connecting block, and separate the glue inlet connector from the first ball. During this process, the first ball, under the action of the first spring, presses against the inclined surface of the inner wall of the through hole to quickly cut off the entire glue supply channel; at the same time, the second ball, under the action of the second spring, also presses against the inner wall of the tapered through hole to quickly cut off the entire connecting channel and glue inlet channel, thereby avoiding both waste caused by glue overflow and damage to the glued products. Then, the new glue supply cylinder is moved towards the valve body until the second magnet installed on the valve body and the first magnet installed on the glue supply cylinder are attracted and fixed by the limiting cooperation of the pin and the pin positioning hole. This achieves a quick connection between the valve body and the glue supply cylinder with good connection stability, and can also improve the assembly accuracy between the two and the positional accuracy of the glue supply connector before and after replacing the glue supply cylinder, thereby improving the stability of glue supply from the glue supply cylinder to the valve body and glue dispensing on the valve body. The glue supply block is connected to the connecting block, and the glue inlet connector is inserted into the through hole on the glue supply connector and squeezed into contact with the first ball. The first ball moves towards the first spring under the push of the glue inlet connector and squeezes the first spring, thereby forming a gap between the first ball and the slope surface of the inner wall of the through hole and the glue supply channel on the glue supply block. At the same time, the second ball in the conical through hole is always squeezed into contact with the inner wall of the conical through hole under the squeezing action of the second spring, thereby preventing glue from entering the connecting channel before dispensing, which can avoid glue overflow during installation. When dispensing is required, the pressurized adhesive in the new dispensing cylinder flows towards the dispensing channel. During this process, the second ball moves under the pressure of the adhesive and squeezes the second spring, thereby forming a dispensing gap between the second ball and the inner wall of the conical through hole, realizing the rapid connection between the internal adhesive channels of the dispensing block on the new dispensing cylinder and the inlet block on the valve body.
[0040] When using the above-mentioned quick-release fluid dispensing mechanism, it can quickly disassemble and connect the dispensing valve body and the dispensing cylinder to facilitate the replacement of the dispensing cylinder for continuous dispensing of the valve body. During the replacement of the dispensing cylinder, it can quickly connect the dispensing block on the valve body with the dispensing block on the new dispensing cylinder. When the valve body is separated from the old dispensing cylinder, it can simultaneously quickly cut off the dispensing block on the old dispensing cylinder and the dispensing block on the valve body. This avoids waste caused by dispensing overflow and damage to the dispensing product, and maintains the stability and consistency of the dispensing liquid in the dispensing channel before and after replacing the dispensing cylinder, thereby ensuring consistent dispensing quality. Furthermore, while facilitating the disassembly and replacement of the glue supply cylinder connected to the valve body, it also enables a quick and stable connection between the valve body and the glue supply cylinder, thereby improving the stability of glue supply from the glue supply cylinder to the valve body and the glue dispensing of the valve body. In addition, it can further improve the stability of the connection between the valve body and the glue supply cylinder, as well as improve the assembly accuracy between the two and the positional accuracy of the glue supply connector before and after replacing the glue supply cylinder, thereby further improving the stability of glue dispensing.
[0041] The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly. They should not be construed as limiting the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.
Claims
1. An online quick-change feeding mechanism for a dual-valve dispensing machine, comprising: The device comprises a glue supply cylinder (21), a valve body (22) located on one side of the glue supply cylinder (21), and a glue inlet block (23) installed on the lower end face of the valve body (22). The glue inlet block (23) is provided with a glue inlet channel (231) and a glue outlet channel (232) that are interconnected. The device is characterized in that: the lower end of the glue supply cylinder (21) is connected to a glue supply block (1) with a glue supply channel (3) inside. A connecting block (2) with a connecting channel (4) inside is installed on the side end face of the glue inlet block (23) facing the glue supply block (1). A first mounting hole (5) is opened on the side surface of the glue supply block (1) facing the connecting block (2). The lower end of the glue supply channel (3), which is connected to the glue outlet (211) of the glue supply cylinder (21) at its upper end, is connected to the first mounting hole (5). One end of the glue supply connector (6) is embedded in the first mounting hole (5). The glue supply connector (6) has a through hole (61) that runs horizontally through it. A glue supply nut (7) with a first central through hole (71) is installed at one end of the through hole (61) near the glue supply channel (3). One end of a first spring (8) that is horizontally set in the through hole (61) contacts the end face of the glue supply nut (7). A first ball (9) is set at the other end of the first spring (8). The inner wall of the middle part of the through hole (61) is set as a slope surface that cooperates with the first ball (9), so that the first ball (9) can be squeezed and contacted by the slope surface that is inclined inward in the direction away from the glue supply nut (7) under the action of the first spring (8) in the compression state. The connecting block (2) has a second mounting hole (15) on its side surface facing the glue supply block (1) that communicates with the connecting channel (4). One end of a horizontally extending glue inlet connector (16) is embedded in the second mounting hole (15), and a flow channel hole (10) is formed on the end face of the glue inlet connector (16) located in the second mounting hole (15). A transition flow channel (161) with an inner diameter smaller than the inner diameter of the flow channel hole (10) is formed between the other end of the glue inlet connector (16) and the flow channel hole (10). The transition flow channel (161) is connected to the flow channel hole (10) through a tapered through hole (11). A second central through hole is installed at the end of the flow channel hole (10) opposite to the transition flow channel (161). The glue inlet nut (12) of the hole (121) has a second spring (14) in a compression state horizontally arranged between the end face of the glue inlet nut (12) and a second ball (13) disposed in a tapered through hole (11), so that the second ball (13) with a diameter larger than the inner diameter of the transition channel (161) can be pressed into contact with the inner wall of the tapered through hole (11). When the end of the glue inlet connector (16) away from the second mounting hole (15) is inserted into the through hole (61) and pressed into contact with the first ball (9) in the through hole (61), a gap is formed between the first ball (9) and the slope surface of the inner wall of the through hole (61), so that one end of the transition channel (161) is connected to the glue supply channel (3) on the glue supply block (1); The glue supply cylinder (21) is embedded in a support base (181). A first magnet (191) is installed on the side of the support base (181) facing the valve body (22). A second magnet (192) that cooperates with the first magnet (191) is installed on the side of a fixing block (182) installed on the valve body (22) facing the support base (181). The first magnet (191) and the second magnet (192) are respectively embedded in the receiving grooves (26) opened on the support base (181) and the fixing block (182).
2. The online quick-change feeding mechanism for a dual-valve dispensing machine according to claim 1, characterized in that: The outer surface of the glue supply connector (6) and the inner wall of the first mounting hole (5), and the outer surface of the glue inlet connector (16) and the inner wall of the second mounting hole (15) are both connected by threads.
3. The online quick-change feeding mechanism for a dual-valve dispensing machine according to claim 1, characterized in that: The outer surface of the glue supply nut (7) and the inner wall of the through hole (61) on the glue supply connector (6), and the outer surface of the glue inlet nut (12) and the inner wall of the flow channel hole (10) are all connected by threads.
4. The online quick-change feeding mechanism for a dual-valve dispensing machine according to claim 1, characterized in that: A sealing ring (17) is provided between the outer surface of the glue inlet connector (16) and the inner wall of the through hole (61) on the glue supply connector (6).
5. The online quick-change feeding mechanism for a dual-valve dispensing machine according to claim 1, characterized in that: When one end of the transition channel (161) is connected to the glue supply channel (3) on the glue supply block (1), the first magnet (191) and the second magnet (192) are attracted and fixed.