Glue injection valve

Abstract

This utility model discloses a glue spraying valve, including a valve body and: an inner cavity; a nozzle fixedly disposed at the lower end of the valve body, the nozzle having a nozzle orifice communicating with the inner cavity; a push rod movable up and down within the inner cavity for sealing the nozzle orifice; a glue inlet tube, one end of which is fixedly disposed on the valve body for introducing glue; a glue inlet channel formed within the valve body, one end of which communicates with the inner cavity, and the other end of which communicates with the glue inlet tube; and a cleaning branch connected in parallel to the glue inlet tube via a T-fitting for introducing a cleaning medium. Cleaning liquid can be introduced through the cleaning branch to clean the inner cavity of the valve body. It can also be connected to a controller for automation, allowing the valve body to self-clean after each use, preventing glue residue from affecting production results, and eliminating the need for manual disassembly for cleaning.

Description

Technical Field

[0001] This utility model belongs to the field of cigarette box production technology, and in particular relates to a glue spraying valve. Background Technology

[0002] In cigarette box production, cigarette boxes need to be assembled and sealed. During the sealing process, glue is sprayed onto the sealing and bonding areas of the cigarette box through a glue spraying valve to complete the sealing of the cigarette box.

[0003] However, after prolonged use, some solidified adhesive will accumulate inside the glue spray valve, affecting its performance. This is usually addressed by manual cleaning by workers, but this is tedious and inconvenient as it requires disassembling each component one by one. Summary of the Invention

[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a glue spraying valve, comprising a valve body, characterized in that it further comprises:

[0005] Inner cavity;

[0006] A nozzle is fixedly installed at the lower end of the valve body. The nozzle has a nozzle that communicates with the inner cavity.

[0007] The push rod, which moves up and down within the inner cavity, is used to seal the nozzle;

[0008] The glue inlet tube has one end fixedly mounted on the valve body and is used to introduce glue liquid;

[0009] The glue inlet channel is located inside the valve body. One end of the glue inlet channel is connected to the inner cavity, and the other end of the glue inlet channel is connected to the glue inlet pipe.

[0010] The cleaning branch, which is connected in parallel to the inlet hose via a tee fitting, is used to introduce the cleaning medium;

[0011] The drive assembly, located within the valve body, is used to drive the push rod to move up and down.

[0012] Furthermore, it also includes:

[0013] The drain tube, which is detachably connected to the lower end of the valve body, is used to guide the cleaning medium to the outside;

[0014] One end of the drainage tube houses the nozzle.

[0015] Furthermore, the cleaning medium is a cleaning liquid.

[0016] Furthermore, it also includes:

[0017] Gas branch, used to introduce clean gas;

[0018] The gas branch and the cleaning branch are connected in parallel to the glue inlet pipe via a Y-type 4-way connector.

[0019] Furthermore, it also includes:

[0020] One-way valves are provided on the side of the inlet hose, cleaning branch, and gas branch near the Y-type 4-way connector.

[0021] Furthermore, it also includes:

[0022] A mounting hole is provided at the lower end of the valve body, and the mounting hole is configured to communicate with the inner cavity of the valve body.

[0023] A retaining ring, the spiral of which is set inside the mounting hole;

[0024] An inclined ring is formed by the outer ring of the upper end of the nozzle tilting outward. The upper end face of the inclined ring abuts against the end face of the mounting hole, and the lower end face of the inclined ring abuts against the fixed ring.

[0025] The mounting hole and the fixing ring are sealed together by a sealing ring, and the nozzle is detachably connected to the valve body through the cooperation of the mounting hole and the fixing ring.

[0026] Furthermore, the driving component includes:

[0027] An electromagnet is installed inside the valve body, and one end of the push rod is fixedly connected to the piston end of the electromagnet.

[0028] The beneficial effects of this utility model are as follows:

[0029] 1. Cleaning fluid can be introduced through the cleaning branch to clean the valve body cavity. It can also be connected to the controller to achieve automation, so that the valve body can self-clean after each use, avoiding the impact of hardened adhesive residue on production results. At the same time, it can be cleaned without workers manually disassembling each part.

[0030] 2. Waste liquid can be diverted by installing a drainage pipe, thus directing the waste liquid to the outside of the workbench, avoiding contamination of the workbench, maintaining a clean production environment, and facilitating centralized collection and treatment of waste liquid, which meets environmental protection requirements.

[0031] 3. By incorporating a cleaning solution, adhesives can be quickly dissolved. Furthermore, using a neutral or mildly corrosive cleaning agent can prevent corrosion of the valve body, extend the service life of the adhesive spray valve, and ensure equipment stability.

[0032] 4. Clean gas can be introduced through the gas branch to dry the residual moisture in the glue inlet tube, glue inlet channel and valve body, to prevent liquid residue from contaminating the glue, prevent glue deterioration from affecting the glue spraying quality, and ensure subsequent glue spraying operations.

[0033] 5. By setting up a one-way valve, problems such as glue deterioration and reduced cleaning effect caused by mixing different media are effectively avoided, which improves the stability and reliability of the glue spraying valve and reduces the risk of equipment failure caused by media mixing.

[0034] 6. By setting mounting holes, fixing rings, and tilting rings, the nozzles are easy to install, disassemble, and replace, reducing maintenance difficulty and cost; at the same time, the sealing rings ensure the sealing of the connection parts and prevent glue and cleaning fluid leakage.

[0035] 7. The electromagnetic drive design replaces the original mechanical drive. The mechanical drive used to be controlled by a mechanical spring. With repeated use, the spring elasticity would decrease, causing the nozzle to leak glue. The electromagnetic drive, however, has almost no elasticity decrease, ensuring stable operation. Attached Figure Description

[0036] Appendix Figure 1 This is a structural diagram of the present invention;

[0037] Appendix Figure 2 This is an internal sectional view of the valve body;

[0038] Appendix Figure 3 This is an inverted schematic diagram showing the valve body separated from the drainage tube.

[0039] Appendix Figure 4 This is an inverted schematic diagram showing the nozzle and valve body separated.

[0040] Appendix Figure 5 A structural diagram of the nozzle when the nozzle is set as a flat orifice;

[0041] Explanation of reference numerals in the attached drawings: 1. Valve body, 2. Inner cavity, 3. Nozzle, 4. Nozzle port, 5. Push rod, 6. Inlet tube, 7. Inlet channel, 8. Cleaning branch, 9. Drain tube, 10. Gas branch, 11. Check valve, 12. Mounting hole, 13. Fixing ring, 14. Tilt ring, 15. Electromagnet. Detailed Implementation

[0042] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. In the description of this application, it should be noted that the terminology used herein is only for describing specific implementations and is not intended to limit the exemplary implementations according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings indicate similar items, and therefore, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings. Example 1

[0043] This embodiment provides a glue spraying valve, including a valve body 1, and further including:

[0044] Inner cavity 2;

[0045] The nozzle 3 is fixedly installed at the lower end of the valve body 1. The nozzle 3 has a nozzle 4, which is connected to the inner cavity 2.

[0046] The push rod 5 is movable up and down inside the inner cavity 2 and is used to seal the nozzle 4;

[0047] The glue inlet tube 6 has one end fixedly mounted on the valve body 1 for introducing glue liquid;

[0048] The glue inlet channel 7 is located inside the valve body 1. One end of the glue inlet channel 7 is connected to the inner cavity 2, and the other end of the glue inlet channel 7 is connected to the glue inlet pipe 6.

[0049] Cleaning branch 8, which is connected in parallel to the glue inlet pipe 6 via a tee fitting, is used to introduce the cleaning medium;

[0050] The drive assembly, which is located inside the valve body 1, is used to drive the push rod 5 to move up and down.

[0051] In this technical solution, both the glue inlet pipe 6 and the cleaning branch 8 are flexible hoses. The other end of the glue inlet pipe 6 is fixedly connected to an externally installed glue storage tank or glue supply system (this is prior art and will not be described in detail here). An external liquid storage tank is also installed, which is used to store the cleaning medium. Both the liquid storage tank and the glue storage tank are pumped into the glue inlet channel 7 by a pump body.

[0052] During glue spraying, the glue in the storage tank is pumped into the glue inlet pipe 6 by the pump body, and then enters the inner cavity 2 of the valve body 1 through the glue inlet pipe 6. At the same time, the drive assembly moves the push rod 5 up and down, thereby realizing the spraying and pausing of glue.

[0053] After the adhesive spraying is completed and cleaning is required, the pump in the adhesive reservoir stops working. At this time, the pump in the liquid reservoir starts working, pumping the cleaning medium into the cleaning branch 8, and then from the cleaning branch 8 into the adhesive inlet pipe 6, thus entering the adhesive inlet channel 7.

[0054] At this time, the push rod 5 moves upward through the drive assembly, so that the nozzle 4 of the nozzle 3 is in the open state. After the cleaning medium enters the glue inlet channel 7, it will enter the inner cavity 2 of the valve body 1, and then be flushed out from the nozzle 4 of the nozzle 3, carrying away the residual glue. This is the first flush.

[0055] A collection box can be placed below the nozzle 3 to collect waste liquid. After the first flush, the push rod 5 moves downward through the drive assembly, so that the nozzle 4 of the nozzle 3 is blocked. At this time, the cleaning medium fills the inner cavity 2 of the valve body 1 and the glue inlet channel 7. Then the pump of the storage tank stops pressurizing, so that the cleaning medium is kept in the inner cavity 2 of the valve body 1 and the glue inlet channel 7, which has a soaking effect and makes the glue removal effect better.

[0056] After soaking for a period of time (e.g., 15-30 minutes), the push rod 5 moves upward through the drive assembly, so that the nozzle 4 of the nozzle 3 is in the open state. Then the pump body of the storage tank continues to pressurize, flushing the waste liquid out from the nozzle 4 of the nozzle 3. This is the second flushing, which completely removes the adhesive from the inside of the valve body 1, prevents the adhesive from solidifying, and ensures that there are no residual adhesive particles.

[0057] This structural design allows cleaning fluid to be introduced through the cleaning branch 8 to clean the inner cavity 2 of the valve body 1. It can also be connected to a controller to achieve automation, so that the valve body 1 can self-clean after each use, avoiding the impact of hardened adhesive residue on production results. At the same time, it can be cleaned without workers manually disassembling each part. Example 2

[0058] This embodiment provides a glue spraying valve, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0059] Furthermore, it also includes:

[0060] Drainage tube 9, which is detachably connected to the lower end of valve body 1, is used to guide the cleaning medium to the outside;

[0061] One end of the drainage pipe 9 houses the nozzle 3.

[0062] In this technical solution, the drainage tube 9 is a flexible tube that can be freely bent to control its direction. Since the glue spraying valve is generally used on the workbench, in order to prevent the waste liquid from spraying onto the workbench, the waste liquid can be drained by installing the drainage tube 9, thereby directing the waste liquid to the outside of the workbench and avoiding contamination of the workbench. Alternatively, a collection box can be placed on the outside, and the other end of the drainage tube 9 can be placed in the collection box to collect the waste liquid.

[0063] With this structural design, waste liquid can be diverted by installing drainage pipe 9, thereby directing the waste liquid to the outside of the workbench and avoiding contamination of the workbench. Example 3

[0064] This embodiment provides a glue spraying valve, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0065] Furthermore, the cleaning medium is a cleaning liquid.

[0066] In this technical solution, the cleaning solution is alcohol, acetone, or other solvents with good adhesive removal effect.

[0067] This structural design, with the inclusion of a cleaning solution, allows for the rapid dissolution of adhesives. Furthermore, using a neutral or mildly corrosive cleaning agent can prevent corrosion of the valve body 1. Example 4

[0068] This embodiment provides a glue spraying valve, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0069] Furthermore, it also includes:

[0070] Gas branch 10 is used to introduce clean gas;

[0071] The gas branch 10 and the cleaning branch 8 are connected in parallel to the glue inlet pipe 6 via a Y-type 4-way connector.

[0072] In this technical solution, the other end of the gas branch 10 is connected to an air pump for introducing clean gas. After the valve body 1 completes the second flushing, the air pump is turned on and gas is input from the gas branch 10. The gas enters the glue inlet pipe 6 through the gas branch 10 and then enters the inner cavity 2 of the valve body 1 through the glue inlet channel 7.

[0073] At this time, nozzle 4 is in the open state, and gas is sprayed out from nozzle 4 to continuously flush away excess water that has entered the hose 6, glue inlet channel 7 and valve body 1, so as to prevent liquid residue from causing infection with glue.

[0074] With this structural design, clean gas can be introduced through the gas branch 10 to dry the residual moisture in the glue inlet tube 6, glue inlet channel 7 and valve body 1, thus preventing liquid residue from causing infection with the glue. Example 5

[0075] This embodiment provides a glue spraying valve, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0076] Furthermore, it also includes:

[0077] One-way valve 11 is provided on the side of the glue inlet pipe 6, the cleaning branch line 8, and the gas branch line 10 near the Y-type 4-way connector.

[0078] In this technical solution, the one-way valve 11 can strictly control the flow direction of the medium in each pipeline. When the glue inlet pipe 6 delivers glue into the valve body 1, the one-way valve 11 of the cleaning branch 8 and the gas branch 10 is closed to prevent the cleaning liquid and cleaning gas from flowing back and mixing into the glue. During the cleaning process, the one-way valve 11 of the glue inlet pipe 6 and the one-way valve 11 of the gas branch 10 are closed to prevent glue from entering the cleaning branch 8 and the gas branch 10. When the cleaning gas is blowing dry, the one-way valve 11 of the glue inlet pipe 6 and the cleaning branch 8 is closed to prevent the gas from flowing backward.

[0079] This structural design, with the addition of a one-way valve 11, effectively avoids problems such as glue deterioration and reduced cleaning effect caused by mixing different media, improves the stability and reliability of the glue spraying valve, and reduces the risk of equipment failure caused by media mixing. Example 6

[0080] This embodiment provides a glue spraying valve, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0081] Furthermore, it also includes:

[0082] Mounting hole 12 is provided at the lower end of valve body 1, and the mounting hole 12 is configured to communicate with the inner cavity 2 of valve body 1.

[0083] The retaining ring 13 has a spiral set inside the mounting hole 12;

[0084] Inclined ring 14: The upper outer ring of the nozzle 3 is inclined outward to form an inclined ring 14. The upper end face of the inclined ring 14 abuts against the end face of the mounting hole 12, and the lower end face of the inclined ring 14 abuts against the fixed ring 13.

[0085] The mounting hole 12 and the fixing ring 13 are sealed together by a sealing ring, and the nozzle 3 is detachably connected to the valve body 1 through the cooperation of the mounting hole 12 and the fixing ring 13.

[0086] In this technical solution, when installing the nozzle 3, first align the inclined ring 14 of the nozzle 3 with the mounting hole 12, so that the upper end face of the inclined ring 14 fits against the end face of the mounting hole 12, and then screw the fixing ring 13 into the mounting hole 12. The fixing ring 13 presses the inclined ring 14 upward. Through the structural design of the inclined surface, the nozzle 3 is tightly connected to the valve body 1.

[0087] The sealing ring is placed between the mounting hole 12 and the retaining ring 13 to fill the gap, ensure the sealing of the connection, and prevent the leakage of glue and cleaning fluid.

[0088] When the nozzle 3 needs to be repaired or replaced, simply unscrew the retaining ring 13 to easily disassemble the nozzle 3. The operation is simple and quick, which greatly reduces the maintenance difficulty and time cost of the nozzle 3. At the same time, this connection method ensures the stability of the nozzle 3 installation and ensures that the nozzle 3 is in a stable position when the glue spraying valve is working, without affecting the glue spraying accuracy.

[0089] The drainage tube 9 and the fixing ring 13 are detachably connected by screws.

[0090] Meanwhile, the nozzle 4 of the nozzle 3 can also be designed as a flat nozzle or other different specifications. Through the detachable connection with the valve body 1, different nozzles 4 can be replaced as needed to meet more requirements.

[0091] This structural design, with the installation hole 12, fixing ring 13 and tilting ring 14, facilitates the installation, disassembly and replacement of the nozzle 3, reducing maintenance difficulty and cost; at the same time, the sealing ring ensures the sealing of the connection parts and prevents glue and cleaning fluid leakage. Example 7

[0092] This embodiment provides a glue spraying valve, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0093] Furthermore, the driving component includes:

[0094] An electromagnet 15 is installed inside the valve body 1, and one end of the push rod 5 is fixedly connected to the piston end of the electromagnet 15.

[0095] In this technical solution, the valve body 1 also has a coil inside. The solenoid valve is divided into permanent magnet A and permanent magnet B. Permanent magnet A is in a fixed state, and permanent magnet B is in a movable state.

[0096] Permanent magnet A and permanent magnet B are in a repulsive state. When the coil is de-energized, permanent magnet A pushes permanent magnet B toward nozzle 3, causing push rod 5 to block the nozzle of nozzle 3. After the electromagnetic coil is energized, permanent magnet A attracts permanent magnet B upward, causing push rod 5 to leave nozzle 3, thereby opening the nozzle.

[0097] This structural design, using an electromagnetic drive, replaces the original mechanical drive. The mechanical drive used to be controlled by a mechanical spring, and with repeated use, the spring's elasticity would decrease, causing the nozzle to leak adhesive. The electromagnetic drive, however, experiences almost no elasticity decrease, ensuring stable operation.

[0098] The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features described in this application specification can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A glue spray valve, comprising a valve body (1), characterized in that, Also includes: Inner cavity (2); The nozzle (3) is fixedly installed at the lower end of the valve body (1). The nozzle (3) has a nozzle (4) which is connected to the inner cavity (2). The push rod (5) is installed in the inner cavity (2) and is used to block the nozzle (4); The glue inlet tube (6) has one end fixedly mounted on the valve body (1) for introducing glue liquid; The glue inlet channel (7) is located inside the valve body (1). One end of the glue inlet channel (7) is connected to the inner cavity (2), and the other end of the glue inlet channel (7) is connected to the glue inlet pipe (6). The cleaning branch (8) is connected in parallel to the glue inlet pipe (6) via a tee fitting and is used to introduce the cleaning medium; The drive assembly, which is located inside the valve body (1), is used to drive the push rod (5) to move up and down.

2. The glue spraying valve according to claim 1, characterized in that, Also includes: The drain tube (9) is detachably connected to the lower end of the valve body (1) and is used to guide the cleaning medium to the outside. One end of the drainage pipe (9) is fitted with the nozzle (3).

3. The glue spraying valve according to claim 2, characterized in that: The cleaning medium is a cleaning solution.

4. A glue spraying valve according to claim 3, characterized in that, Also includes: Gas branch (10) is used to introduce clean gas; The gas branch (10) and the cleaning branch (8) are connected in parallel to the glue inlet pipe (6) via a Y-type 4-way connector.

5. A glue spraying valve according to claim 4, characterized in that, Also includes: One-way valve (11) is provided on the side of the glue inlet pipe (6), cleaning branch (8) and gas branch (10) near the Y-type 4-way connector.

6. A glue spraying valve according to claim 5, characterized in that, Also includes: Mounting hole (12) is provided at the lower end of valve body (1), and the mounting hole (12) is connected to the inner cavity (2) of valve body (1); A retaining ring (13) has a spiral set inside the mounting hole (12); Inclined ring (14): The upper outer ring of the nozzle (3) is inclined outward to form an inclined ring (14). The upper end face of the inclined ring (14) abuts against the end face of the mounting hole (12), and the lower end face of the inclined ring (14) abuts against the fixed ring (13). The mounting hole (12) and the fixing ring (13) are sealed together by a sealing ring, and the nozzle (3) is detachably connected to the valve body (1) through the cooperation of the mounting hole (12) and the fixing ring (13).

7. A glue spraying valve according to claim 6, characterized in that, The driving component includes: An electromagnet (15) is installed inside the valve body (1), and one end of the push rod (5) is fixedly connected to the piston end of the electromagnet (15).

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