Automatic glue supply system of cigarette making machine

Abstract

The invention discloses an automatic glue supply system of a cigarette making machine. The automatic glue supply system comprises a glue storing and feeding device and an automatic glue supply device which are communicated. The glue storage and gluing device comprises a large glue barrel and a first pump body, the first pump body is communicated with the interior of the large glue barrel through a glue suction pipe, a glue supply pipe is installed on the glue outlet side of the first pump body, and the glue supply pipe is communicated to a glue inlet pipe of the automatic glue supply device; the automatic glue supply device comprises a glue supply barrel, a pneumatic lifting platform is arranged above the glue supply barrel, a liquid level detection sensor and a glue inlet pipe are mounted on the pneumatic lifting platform, and an openable ball valve is arranged at the bottom of the glue supply barrel, so that a glue outlet of the ball valve is connected with a glue inlet seat below the ball valve, and gravitational flow type glue supply is formed. By optimizing the medium glue solution supply mode and the glue storage barrel, an original glue supply line is shortened, no compressed air makes direct contact with the medium glue solution, the skinning phenomenon and glue dirt are completely avoided, and the glue path blocking fault is completely eradicated.

Description

Technical Field

[0001] This invention relates to the field of cigarette manufacturing equipment, and in particular to an automatic glue supply system for cigarette machines. Background Technology

[0002] The cigarette making and splicing unit is a piece of equipment used in cigarette production. It consists of a feeding and forming machine, a rolling and forming machine, and a filter tip splicing machine. The glue supply device continuously and evenly applies latex lines to the overlaps of the cigarette paper during the rolling and forming process, thus bonding the overlaps.

[0003] The pressure glue barrel of the roll forming machine is a device used to store and transport medium glue liquid. Its working principle is mainly based on the use of compressed air to drive the medium glue liquid stored inside. Compressed air is injected into the barrel from the air inlet at the top. As the input compressed air fills the cavity of the pressure glue barrel, its pressure acts on the surface of the fluid medium glue liquid inside the barrel, forcing the fluid medium glue liquid at the bottom of the barrel out from the glue outlet at the bottom of the pressure glue barrel into the glue liquid delivery pipeline, until it is delivered to the nozzle of the glue sprayer, thereby completing the glue supply work.

[0004] The use of pressure glue tanks has several drawbacks in fluid transportation. When compressed air enters the top space of the pressure glue tank, the upper part of the glue medium comes into contact with the compressed air. The compressed air dries the glue medium in the upper part of the tank, which may cause a curing reaction, forming a hardened film, known as a skin. This skinned glue medium may clog the outlet, pipeline, or sprayer, affecting the flow of glue medium in the pipeline and even damaging the equipment. If the skinned portion mixes into the glue medium, it will lead to uneven application, affecting the coating quality. Frequent cleaning of the skinned surface also wastes glue medium, increasing maintenance costs. Furthermore, pressure glue tanks are difficult to clean and pose certain safety hazards.

[0005] Therefore, the glue supply device of the existing roll forming machine is prone to insufficient glue supply, interruption or flow interruption when the equipment is running normally, resulting in insufficient glue or glue interruption when the glue sprayer applies glue. Summary of the Invention

[0006] To address the aforementioned problems, this invention provides a gravity-fed self-supplying automatic adhesive supply system. By optimizing the adhesive supply method and storage tank, this invention shortens the original supply route and eliminates direct contact between compressed air and the adhesive, thus completely preventing skinning and adhesive buildup, and eliminating adhesive blockage.

[0007] The technical solution adopted by this invention to solve its technical problem is as follows:

[0008] The automatic glue supply system for cigarette making machines includes a connected glue storage and application device and an automatic glue supply device; The glue storage and application device includes a large glue tank and a first pump body. The first pump body is installed above the large glue tank via a first pump seat and is connected to the inside of the large glue tank via a glue suction pipe. A glue supply pipe is installed on the glue outlet side of the first pump body, and the glue supply pipe is connected to the glue inlet pipe of the automatic glue supply device. The automatic glue supply device includes a glue supply tank, a pneumatic lifting platform above the glue supply tank, a liquid level detection sensor and a glue inlet pipe installed on the pneumatic lifting platform, an openable and closable ball valve at the bottom of the glue supply tank, so that the glue outlet of the ball valve is connected to the glue inlet seat below to form a gravity-flow glue supply, the glue inlet seat is vertically and airtightly connected to the glue supply seat below, and a second pump body is installed on the side of the glue supply seat for pumping the glue liquid into the pipeline and delivering it to the glue sprayer.

[0009] Furthermore, the pneumatic lifting platform includes a cylinder and a lifting bracket; the pneumatic lifting platform has two working positions. When working, the cylinder is in a low position when it is lowered; when it needs to be stopped for cleaning, the cylinder moves to cause the glue inlet pipe and liquid level detection sensor on the lifting bracket to be disengaged from the glue supply tank, which facilitates the installation and disassembly of the glue supply tank.

[0010] Furthermore, the first pump body is a diaphragm pump, which is mounted above the large rubber bucket via a diaphragm pump seat.

[0011] Furthermore, the diaphragm pump is equipped with an air inlet connector and an air pipe, the other end of which is connected to the air inlet connector and a solenoid valve; the outlet side of the diaphragm pump is equipped with a glue hose connector and a glue supply hose, and the inlet side is connected to a stainless steel glue suction hose through a butt joint connector and a right-angle connector. A filter column is provided at the bottom of the stainless steel glue suction hose, and the filter column is located at the bottom of the large glue tank to filter impurities in the glue liquid.

[0012] Optionally, the large glue bucket is mounted on the protective cover support.

[0013] Optionally, the glue inlet seat and the glue supply seat are provided with protective covers.

[0014] Optionally, the ball valve is installed at the bottom of the glue supply tank via a ball valve positioning nut and a sealing gasket.

[0015] Optionally, the ball valve is connected to a ball valve handle to control its opening and closing.

[0016] Optionally, the glue supply bucket is T-shaped, with the upper part for glue inlet and the bottom having a square base.

[0017] Furthermore, the top of the glue supply bucket is provided with a glue bucket lid, and a water-absorbing sponge is installed inside the lid. The water-absorbing sponge is positioned by a locking nut. The inner side of the lid is made of water-absorbing composite material to absorb volatile water molecules in the glue liquid.

[0018] Furthermore, the front of the glue supply bucket is provided with an observation window for visually measuring the glue level inside the bucket.

[0019] Furthermore, the top rear end of the glue supply tank is provided with two holes for the glue inlet pipe of the pneumatic lifting platform and the liquid level detection sensor to enter the tank when they fall; an isolation plate is provided between the two holes inside the tank to prevent splashing when the glue inlet pipe injects glue into the tank.

[0020] Optionally, the glue supply bucket is made of 304 stainless steel and its inner wall is coated with a ceramic coating to reduce the adhesion of glue to the inner wall of the bucket.

[0021] Optionally, the liquid level detection sensor is an ultrasonic sensor.

[0022] Furthermore, the second pump body is a geared rubber pump, which is driven by a toothed pulley, a toothed belt, and a servo motor shaft connected by a drive shaft.

[0023] Furthermore, when the glue level in the glue supply tank is lower than the minimum set value, the solenoid valve of the diaphragm pump is turned on, and the glue is delivered to the glue supply tank through the glue supply pipe by means of diaphragm pump supply; when the glue level in the glue supply tank is higher than the maximum set value, the solenoid valve of the diaphragm pump controls the diaphragm pump to stop the glue supply, so as to realize the quantitative medium glue replenishment.

[0024] Furthermore, the solenoid valve and the liquid level detection sensor are connected to a PLC control circuit; the PLC control circuit includes a circuit breaker Q1, a control switch S1, a control relay K1, a normally open contact K1, and an indicator light H1; When the liquid level detects that the glue level is below the minimum level, the control relay K1 is activated, the normally open contact K1 is closed, and the solenoid valve is activated to start glue supply, and the indicator light H1 is lit at the same time; when the liquid level detects that the glue level has reached the maximum level, the control relay K1 is deactivated, the normally open contact K1 is deactivated, the solenoid valve is de-energized, glue supply stops, and the indicator light H1 is turned off.

[0025] The beneficial effects of this invention are as follows: This invention uses a glue storage and application device to inject glue into a glue supply tank, solving the problem of small glue tank volume and the need for frequent manual glue addition, thus achieving closed-loop glue supply on demand. An automatic glue supply device then transports the glue to the supply base by gravity flow, minimizing the glue supply path and significantly reducing glue blockage caused by the glue supply system and pipelines. This aims to reduce equipment failure rates, decrease glue tank disassembly and cleaning time, and shorten troubleshooting time, demonstrating good feasibility and innovative design advantages.

[0026] This invention can significantly improve the stability of the glue supply system of the roll forming machine, reduce the difficulty of troubleshooting glue supply system failures, and the entire disassembly and cleaning process of the glue supply system takes an average of 5 minutes, which is 80% more efficient than cleaning the glue storage tank of the pressure vessel structure. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the structure of an automatic glue supply system for a cigarette machine according to the present invention; Figure 2 This is a schematic diagram of the adhesive storage and application device of the present invention; Figure 3 This is a schematic diagram of the automatic glue supply device of the present invention; Figure 4 This is a structural disassembly diagram of the automatic glue supply device of the present invention; Figure 5 This is a schematic diagram of the PLC control circuit according to an embodiment of the present invention.

[0029] Legend: 11-Large glue bucket, 12-First pump body, 13-Suction pipe, 14-Glue supply pipe, 15-First pump base, 16-Air pipe, 17-Right angle pipe connector, 18-Filter column, 19-Protective cover support; 21-Glue supply tank, 211-Glue tank lid, 212-Absorbent sponge, 213-Observation window, 22-Pneumatic lifting platform, 221-Ultrasonic sensor, 222-Glue inlet pipe, 23-Ball valve, 231-Ball valve outlet, 24-Glue inlet seat, 25-Glue supply seat, 26-Protective cover, 27-Second pump body, 28-Top hole bottom plate, 29-Ball valve handle. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] Unless otherwise defined, the technical or scientific terms used in this invention shall have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms "first," "second," and similar terms used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0032] To keep the following description of the embodiments of the present invention clear and concise, detailed descriptions of known functions and known components are omitted.

[0033] Reference Figure 1 This invention relates to an automatic glue supply system for cigarette machines, comprising a glue storage and application device and an automatic glue supply device connected in series. The underlying principle is that the medium glue is stored in a large glue tank 11. The medium glue is pumped into an improved glue supply tank 21 by an electrically controlled pneumatic diaphragm pump. A liquid level detection sensor limits the amount of glue supplied by the electrically controlled pneumatic diaphragm pump. The medium glue in the glue supply tank 21 flows by gravity to the glue supply seat 25. A gear glue pump, driven by a servo motor, delivers the medium glue to the glue sprayer, thereby completing the glue supply operation for the cigarette machine.

[0034] Reference Figure 2 The glue storage and application device includes a large glue tank 11 and a first pump body 12. The large glue tank 11 is mounted on a protective cover support 19. The first pump body 12 is mounted above the large glue tank 11 via a first pump seat 15 and is connected to the inside of the large glue tank 11 via a suction pipe 13. A glue supply pipe 14 is installed on the glue outlet side of the first pump body 12, and the glue supply pipe 14 is connected to the glue inlet pipe 222 of the automatic glue supply device. In this embodiment, the first pump body 12 is preferably a diaphragm pump, which is mounted above the large glue tank 11 via a diaphragm pump seat.

[0035] The diaphragm pump is equipped with an air inlet connector and a 6mm air pipe 16. The other end of the air pipe 16 is connected to the air inlet connector and a solenoid valve. The outlet side of the diaphragm pump is equipped with a glue hose connector and a glue supply pipe 14. The inlet side is connected to a stainless steel glue suction pipe 13 through a butt pipe connector and a right-angle pipe connector 17. A filter column 18 is provided at the bottom of the stainless steel glue suction pipe 13. The filter column 18 is located at the bottom of the large glue tank 11 to filter impurities in the glue liquid.

[0036] When the glue level in the glue supply tank 21 is lower than the minimum set value, the solenoid valve of the diaphragm pump is turned on, and the glue is delivered to the glue supply tank 21 through the glue supply pipe 14 by the diaphragm pump. When the glue level in the glue supply tank 21 is higher than the maximum set value, the solenoid valve of the diaphragm pump controls the diaphragm pump to stop the glue supply, thereby realizing the quantitative medium glue replenishment, thus solving the problem of small glue tank volume and frequent manual glue addition, and realizing closed-loop glue supply on demand.

[0037] Reference Figure 3 , Figure 4 The automatic glue supply device includes a glue supply tank 21. A pneumatic lifting platform 22 is provided above the glue supply tank 21. An ultrasonic sensor 221 and a glue inlet pipe 222 are installed on the pneumatic lifting platform 22. An openable and closable ball valve 23 is provided at the bottom of the glue supply tank 21, so that the glue outlet 231 of the ball valve is connected to the glue inlet seat 24 below to form a gravity-flow glue supply. The glue inlet seat 24 is vertically and airtightly connected to the glue supply seat 25 below. The glue inlet seat 24 and the glue supply seat 25 are provided with a protective cover 26. A second pump body 27 is installed on the side of the glue supply seat 25 for pumping the glue liquid into the pipeline and delivering it to the glue sprayer.

[0038] The pneumatic lifting platform 22 includes a cylinder and a dustproof lifting bracket. The pneumatic lifting platform 22 has two working positions. During operation, the cylinder is in the lower position. When production stops or cleaning is required, the ball valve 23 of the glue supply tank 21 is closed. The cylinder then actuates, causing the glue inlet pipe 222 and the liquid level detection sensor on the lifting bracket to detach from the glue supply tank 21, facilitating the installation and removal of the glue supply tank 21. The ball valve 23 is installed at the bottom of the glue supply tank 21 via a ball valve positioning nut and a sealing gasket. The ball valve 23 is connected to a ball valve handle 29 for opening and closing control.

[0039] In a preferred embodiment, the glue supply tank 21 is T-shaped with a maximum volume of approximately 3.5 liters. The upper part is for glue inlet, and the bottom has a square base. The top of the glue supply tank 21 has a lid 211, inside which is installed a water-absorbing sponge 212, which is secured by a locking nut. The inner side of the lid is made of a water-absorbing composite material to absorb volatile water molecules in the glue, preventing the formation of yellow stains caused by condensation. The front of the glue supply tank 21 has an observation window 213 for visually assessing the glue level inside.

[0040] To ensure a continuous supply of adhesive for uninterrupted application, the adhesive supply tank 21 has two holes at its top rear end. These holes allow the adhesive inlet pipe 222 of the pneumatic lifting platform 22 and the liquid level detection sensor to enter the tank during descent, enabling real-time detection of the adhesive level and supply. An isolation plate is installed between the two holes inside the tank to prevent splashing of adhesive from the inlet pipe 222 during injection, which could contaminate the ultrasonic sensor 221 and affect its detection sensitivity. The adhesive supply tank 21 is made of 304 stainless steel, and its inner wall is coated with a ceramic coating to reduce adhesive buildup and further decrease the probability of adhesive blockage.

[0041] In a preferred embodiment, the second pump body 27 is a geared rubber pump, which is driven by a toothed pulley, a toothed belt, and a servo motor shaft connected by a transmission shaft, and is mounted on the top hole bottom plate 28.

[0042] In a preferred embodiment, refer to Figure 5 The solenoid valve and the liquid level detection sensor are connected to a PLC control circuit; the PLC control circuit includes a circuit breaker Q1, a control switch S1, a control relay K1, a normally open contact K1, and an indicator light H1; When the liquid level detects that the glue level is below the minimum level, the control relay K1 is activated, the normally open contact K1 is closed, and the solenoid valve is activated to start glue supply, and the indicator light H1 is lit at the same time; when the liquid level detects that the glue level has reached the maximum level, the control relay K1 is deactivated, the normally open contact K1 is deactivated, the solenoid valve is de-energized, glue supply stops, and the indicator light H1 is turned off.

[0043] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be included within the protection scope of the present invention.

Claims

1. A system for automatically supplying glue to a cigarette making machine, characterized in that: The automatic glue supply system comprises a glue storage and application device, an automatic glue supply device, and a glue storage and application device. The glue storage and application device comprises a large glue barrel, a first pump body, and a glue supply pipe. The automatic glue supply device comprises a glue supply barrel, a pneumatic lifting platform, a liquid level detection sensor, an inlet pipe, a ball valve, and a glue supply seat. The pneumatic lifting platform comprises a cylinder and a lifting bracket.

2. The automatic glue supply system of the cigarette making machine according to claim 1, wherein the first pump body is a diaphragm pump.

3. The automatic glue supply system of the cigarette making machine according to claim 1, wherein the ball valve is installed on the bottom of the glue supply barrel.

4. The automatic glue supply system of the cigarette making machine according to claim 1, wherein the glue supply barrel is in the shape of a "T".

5. The automatic glue supply system of the cigarette making machine according to claim 4, wherein the top of the glue supply barrel is provided with a glue barrel cover.

6. The automatic glue supply system of the cigarette making machine according to claim 4, wherein the front of the glue supply barrel is provided with an observation window.

7. The automatic glue supply system of the cigarette making machine according to claim 4, wherein the top of the glue supply barrel is provided with two holes.

8. The automatic glue supply system of the cigarette making machine according to claim 1, wherein the second pump body is a gear glue pump.

9. The automatic glue supply system of the cigarette making machine according to claim 2, wherein the second pump body is a gear glue pump. ​ ​ ​ ​ ​ ​ ​ ​ ​ When the glue liquid level in the glue supply barrel is lower than the minimum set value, the electromagnetic valve of the diaphragm pump is turned on to supply glue liquid into the glue supply barrel through the glue supply pipe by the diaphragm pump; when the glue liquid level in the glue supply barrel is higher than the maximum set value, the electromagnetic valve controls the diaphragm pump to stop supplying glue liquid, so as to realize quantitative medium glue liquid supplement.

10. The automatic glue supply system of the cigarette making machine according to claim 9, characterized in that: The electromagnetic valve and the liquid level detection sensor are connected to a PLC control circuit; the PLC control circuit comprises a circuit breaker Q1, a control switch S1, a control relay K1, a normally open contact K1 and an indicator lamp H1; When the liquid level detection shows that the glue level is lower than the minimum level, the control relay K1 is attracted, the normally open contact K1 is closed, the electromagnetic valve is attracted, the glue supply is started, and the indicator lamp H1 is lighted; when the liquid level detection shows that the glue level reaches the maximum level, the control relay K1 is disconnected, the normally open contact K1 is disconnected, the electromagnetic valve loses power, the glue supply is stopped, and the indicator lamp H1 is extinguished.

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