Glue supply device and cigarette making machine

Abstract

The invention relates to a glue supply device and a cigarette making machine, and the glue supply device comprises a glue supply mechanism which comprises a glue supply barrel and a diaphragm pump, the glue supply barrel is in a normal-temperature and normal-pressure state and is used for containing glue, and the diaphragm pump is connected with the glue supply barrel; the first filtering mechanism is arranged at the downstream of the glue supply mechanism; the glue discharging mechanism is arranged at the downstream of the first filtering mechanism; wherein the diaphragm pump is used for pumping glue in the glue supply barrel to the first filtering mechanism, the first filtering mechanism is used for filtering the glue, and the glue discharging mechanism is used for receiving the glue output by the first filtering mechanism and spraying the glue. The cigarette making machine comprises the glue supply device. According to the glue supply device and the cigarette making machine, pressure does not need to be applied in the glue supply barrel to convey the glue, shutdown is not needed when the glue is injected, and continuous and stable conveying of the glue can be achieved; the glue is sprayed after being filtered by the first filtering mechanism, the sprayed glue is pure, the probability that the glue blocks the glue outlet mechanism is greatly reduced, and continuous and stable spraying of the glue can be achieved.

Description

Technical Field

[0001] The present application relates to the technical field of tobacco manufacturing, and particularly to a glue supply device and a cigarette making machine. Background Art

[0002] In a cigarette making machine, the main function of the glue supply device is to continuously apply a uniform glue line to the lap joint of cigarette paper during the forming process of the cigarette rod, so that the lap joint is bonded to form a cigarette rod. In the existing glue supply device, the glue bucket of the glue supply device is a pressure tank, and a certain pressure value of air needs to be applied in the glue bucket to realize the transportation of glue. The glue in the glue bucket is in direct contact with the applied air, which will form a dense glue film on the surface of the glue in the glue bucket, resulting in poor subsequent glue discharge and blockage of components, affecting the normal operation of the equipment. Moreover, it is necessary to stop the machine to release the pressure in the glue tank before filling the glue, and the continuous and stable transportation of glue cannot be realized. Summary of the Invention

[0003] Based on this, in view of the problem that the existing glue supply device cannot realize the continuous and stable transportation of glue, it is necessary to provide a glue supply device and a cigarette making machine.

[0004] A glue supply device for a cigarette making machine, the glue supply device comprising:

[0005] A glue supply mechanism, including a glue supply bucket and a diaphragm pump, the glue supply bucket being in a normal temperature and pressure state and used for containing glue, and the diaphragm pump being connected to the glue supply bucket;

[0006] A first filtering mechanism provided downstream of the glue supply mechanism;

[0007] A glue discharging mechanism provided downstream of the first filtering mechanism;

[0008] Wherein, the diaphragm pump is used to extract the glue in the glue supply bucket to the first filtering mechanism, the first filtering mechanism is used to filter the glue, and the glue discharging mechanism is used to receive the glue output by the first filtering mechanism and spray the glue.

[0009] In the above glue supply device, the glue supply bucket is in a normal temperature and pressure state. The diaphragm pump is used to extract the glue in the glue supply bucket to the first filtering mechanism for filtering, and then the filtered glue is sprayed through the glue discharging mechanism. Since the diaphragm pump itself has a certain pre-pressure during the glue transportation process, it does not need to rely on applying pressure in the glue supply bucket to transport the glue, and it does not need to stop the machine when filling the glue, so the continuous and stable transportation of glue can be realized; the glue is filtered by the first filtering mechanism and then sprayed, and the sprayed glue is pure, greatly reducing the probability of the glue discharging mechanism being blocked, and the continuous and stable spraying of glue can be realized, which is beneficial to improving the operation efficiency of the glue supply device and effectively reducing the production cost.

[0010] In some of these embodiments, the top side of the glue supply barrel has an opening communicating with the outside air, and the glue supply device further includes a second filtering mechanism, which is installed at the opening of the glue supply barrel.

[0011] In some of these embodiments, the second filtering mechanism is a filter with a plurality of filter holes.

[0012] In some of these embodiments, the first filtering mechanism includes a housing and a filter element. The filter element is accommodated in the housing. The outer wall of the filter element is spaced from the inner wall of the housing, and a first cavity is formed therebetween. The interior of the filter element has a second cavity. When the filtering mechanism filters the glue, the glue flows through the second cavity to the glue discharging mechanism, and the impurities in the glue are filtered and stored in the first cavity.

[0013] In some of these embodiments, the first filtering mechanism further includes an exhaust port, a waste discharge port and a glue discharge port. The glue discharge port communicates with the glue discharging mechanism and is used for outputting the filtered glue. The exhaust port communicates the top side of the second cavity with the outside air. The waste discharge port communicates with the first cavity and is used for discharging the impurities in the glue.

[0014] In some of these embodiments, the glue supply device further includes a pressure regulating mechanism, which is connected to the diaphragm pump and is used for regulating the air pressure in the diaphragm pump.

[0015] In some of these embodiments, the pressure regulating mechanism includes a pneumatic check valve, a pressure regulating valve and a first pipeline. The first pipeline is connected to the air inlet of the diaphragm pump and is used for supplying a first compressed gas. The pneumatic check valve and the pressure regulating valve are both provided on the first pipeline. The pneumatic check valve is used to make the first compressed gas can only be unidirectionally input into the air inlet of the diaphragm pump from the first pipeline. The pressure regulating valve is used for regulating the air pressure of the first compressed gas.

[0016] In some of these embodiments, the glue discharging mechanism includes a metering pump and a glue coating member. The glue coating member is arranged downstream of the first filtering mechanism and is used for spraying the glue. The metering pump is arranged between the glue coating member and the first filtering mechanism and is used for controlling the flow rate of the glue.

[0017] In some of these embodiments, the glue dispensing mechanism further includes a gas supply component, a three-way joint, a second pipeline, and a third pipeline. The gas supply component is used to supply a second compressed gas. The second pipeline is used to control the glue dispensing of the glue application component. The third pipeline is used to open and close the pneumatic check valve. One end of the second pipeline is connected to the gas supply component through the three-way joint, and the other end of the second pipeline is connected to the glue application component. One end of the third pipeline is connected to the gas supply component through the three-way joint, and the other end of the third pipeline is connected to the control port of the pneumatic check valve.

[0018] A cigarette making machine includes the above-mentioned glue supply device.

[0019] In the above-mentioned cigarette making machine, when the glue supply barrel is in a normal temperature and pressure state, the diaphragm pump is used to extract the glue in the glue supply barrel, filter it through the first filtering mechanism, and then spray the filtered glue through the glue dispensing mechanism. Since the diaphragm pump itself has a certain pre-pressure during the glue transportation process, there is no need to rely on applying pressure in the glue supply barrel to transport the glue, and it is not necessary to stop the machine when filling the glue, so that the continuous and stable transportation of the glue can be realized. After the glue is filtered through the first filtering mechanism and then sprayed, the sprayed glue is pure, greatly reducing the probability of the glue blocking the glue dispensing mechanism, enabling the continuous and stable spraying of the glue, facilitating the improvement of the operation efficiency of the glue supply device, and effectively reducing the production cost. Description of the Drawings

[0020] Figure 1 It is a schematic diagram of the glue supply device in some embodiments of the present application.

[0021] Figure 2 is Figure 1 A schematic diagram of the shown glue supply device, where the dotted arrow is the glue flow path and the solid arrow is the compressed gas flow path.

[0022] Figure 3 is Figure 1 A schematic diagram of the first filtering mechanism in the shown glue supply device.

[0023] Reference Signs:

[0024] 100, glue supply mechanism; 110, glue supply barrel; 111, opening; 120, diaphragm pump;

[0025] 200, first filtering mechanism; 201, exhaust port; 202, waste discharge port; 203, glue outlet; 210, housing; 220, filter element; 221, first cavity; 222, second cavity;

[0026] 300, glue dispensing mechanism; 310, metering pump; 320, glue application component; 330, gas supply component; 340, three-way joint; 350, second pipeline; 360, third pipeline;

[0027] 400. The second filtering mechanism;

[0028] 500. The pressure regulating mechanism; 510. The pneumatic one-way valve; 520. The pressure regulating valve; 530. The first pipeline. Specific embodiments

[0029] To make the above objects, features, and advantages of the present application more apparent and understandable, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0030] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present application.

[0031] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present application, "a plurality" means at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0032] In the present application, unless otherwise clearly specified and limited, the terms "initial", "connected", "connected to", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. It can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0033] In this application, unless otherwise clearly specified or limited, the first feature being "on" or "under" the second feature may mean that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply indicates that the horizontal height of the first feature is less than that of the second feature.

[0034] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or there can also be an intermediate element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are only for illustrative purposes and do not represent the only implementation.

[0035] Please refer to Figure 1 and Figure 2 , the glue supply device in an embodiment is used for a cigarette making machine. The glue supply device includes a glue supply mechanism 100, a first filtering mechanism 200 and a glue discharging mechanism 300. The glue supply mechanism 100 includes a glue supply barrel 110 and a diaphragm pump 120. The glue supply barrel 110 is in a normal temperature and pressure state and is used to contain glue. The diaphragm pump 120 is connected to the glue supply barrel 110. The first filtering mechanism 200 is disposed downstream of the glue supply mechanism 100, and the glue discharging mechanism 300 is disposed downstream of the first filtering mechanism 200; wherein, the diaphragm pump 120 is used to pump the glue in the glue supply barrel 110 to the first filtering mechanism 200, the first filtering mechanism 200 is used to filter the glue, and the glue discharging mechanism 300 is used to receive the glue output by the first filtering mechanism 200 and spray the glue.

[0036] Here, the glue supply device is used for a cigarette making machine. The main function of the glue supply device is: during the process of forming a cigarette rod, continuously apply a uniform glue line to the lap joint of the cigarette paper so that the lap joint is bonded to form a cigarette rod.

[0037] It should be noted that the glue supply barrel 110 is in a normal temperature and pressure state, that is: the air in the glue supply barrel 110 is in communication with the atmosphere, and the glue supply barrel 110 is in a room temperature and atmospheric pressure environment. The first filtering mechanism 200 is disposed downstream of the glue supply mechanism 100, and the glue discharging mechanism 300 is disposed downstream of the first filtering mechanism 200, that is: during the glue conveying process, the glue flows through the glue supply barrel 110 of the glue supply mechanism 100 to the diaphragm pump 120, the first filtering mechanism 200, and the glue discharging mechanism 300 in sequence.

[0038] Among them, the diaphragm pump 120 mainly consists of a pump body, a diaphragm, a driving mechanism, and inlets and outlets. The diaphragm is a flexible membrane, usually made of corrosion-resistant and wear-resistant materials (such as polytetrafluoroethylene, rubber, etc.). The diaphragm pump 120 mainly realizes the suction and discharge of glue based on the reciprocating motion of the diaphragm. For example, when the diaphragm moves upward, the volume inside the pump body increases to form a negative pressure, and the glue is sucked into the pump chamber; when the diaphragm moves downward, the volume inside the pump body decreases to form a positive pressure, and the glue is discharged from the pump chamber.

[0039] For the above-mentioned glue supply device, when the glue supply bucket 110 is in a normal temperature and pressure state, the diaphragm pump 120 is used to extract the glue in the glue supply bucket 110, filter it through the first filtering mechanism 200, and then spray the filtered glue through the glue outlet mechanism 300. Since the diaphragm pump 120 itself has a certain pre-pressure during the glue transportation process, there is no need to rely on applying pressure in the glue supply bucket 110 to transport the glue, and the machine does not need to stop when filling the glue, which can realize the continuous and stable transportation of the glue; the glue is filtered by the first filtering mechanism 200 and then sprayed, and the sprayed glue is pure, greatly reducing the probability of the glue clogging the glue outlet mechanism 300, which can realize the continuous and stable spraying of the glue, facilitating the improvement of the operating efficiency of the glue supply device and effectively reducing the production cost.

[0040] In the embodiment of the present application, the glue supply bucket 110 is a component for accommodating glue, and the glue supply bucket 110 can adopt various structural forms. For example, the glue supply bucket 110 has a cylindrical structure with an open top side 111, and the outer contour of the cylindrical structure can be cylindrical, prismatic, or other shapes, and the shape of the glue supply bucket 110 is not limited herein.

[0041] In the embodiment of the present application, the diaphragm pump 120 is a component for transporting glue. The diaphragm pump 120 can be a pneumatic pump, using compressed air as a power source, and driving the reciprocating motion of the diaphragm by controlling the change of air pressure; the diaphragm pump 120 can also be an electric pump, driven by an electric motor, and the motor drives a crank-link mechanism to make the diaphragm do reciprocating motion, and the type of the diaphragm pump 120 is not limited herein.

[0042] In the embodiment of the present application, the first filtering mechanism 200 is a component for filtering glue, and the first filtering mechanism 200 can adopt various structural forms. For example, the first filtering mechanism 200 is a filter with a filter screen, which can effectively filter impurities in the glue.

[0043] In the embodiment of the present application, the glue outlet mechanism 300 is a component for spraying glue, and the glue outlet mechanism 300 can adopt various structural forms. The glue outlet mechanism 300 can be a structure including a glue gun, and the filtered glue is continuously and evenly applied to the lap joint of the cigarette paper through the glue gun, so that the lap joint is bonded to form a cigarette rod.

[0044] Specifically, please refer toFigure 1 and Figure 2 The top side of the glue supply barrel 110 has an opening 111 communicating with the outside air. The glue supply device further includes a second filtering mechanism 400, and the second filtering mechanism 400 is installed at the opening 111 of the glue supply barrel 110.

[0045] The beneficial effect here is that the air in the glue supply barrel 110 communicates with the atmosphere through the second filtering mechanism 400, avoiding the direct contact between the glue in the glue supply barrel 110 and the flowing air, reducing the probability of blocking the glue discharging mechanism 300 due to the formation of a dense glue film caused by direct contact with the air. At the same time, the second filtering mechanism 400 can prevent large particulate matter from entering the glue supply barrel 110 and does not prevent the glue supply barrel 110 from communicating with the atmosphere.

[0046] In the embodiment of the present application, the second filtering mechanism 400 is a component installed at the opening 111 of the glue supply barrel 110, and there can be various connection methods between the second filtering mechanism 400 and the glue supply barrel 110. For example, the second filtering mechanism 400 is fixed at the opening 111 of the glue supply barrel 110 by a snap connection method.

[0047] Specifically, please refer to Figure 1 and Figure 2 The second filtering mechanism 400 is a filter with a plurality of filter holes.

[0048] The beneficial effect here is that the setting of the second filtering mechanism 400 can prevent particulate matter from entering the glue supply barrel 110 and enable the air in the glue supply barrel 110 to flow to the outside air after being filtered.

[0049] In the embodiment of the present application, the shape of the filter can be cuboid, cylindrical, cube-shaped or other shapes, as long as the second filtering mechanism 400 can be adapted to the opening 111 of the glue supply barrel 110. The second filtering mechanism 400 includes at least one filter screen, and a plurality of filter holes are evenly distributed on the filter screen. When the second filtering mechanism 400 includes at least two filter screens, the filter screens can be stacked along the height direction of the glue supply barrel 110 and have different filtering precisions to further prevent particulate matter from entering the glue supply barrel 110 and enable the air in the glue supply barrel 110 to flow to the outside air after being filtered.

[0050] Please refer to Figure 3 The first filtering mechanism 200 includes a housing 210 and a filter element 220. The filter element 220 is accommodated in the housing 210. The outer wall of the filter element 220 is spaced from the inner wall of the housing 210, and a first cavity 221 is formed therebetween. The interior of the filter element 220 has a second cavity 222; when the filtering mechanism filters the glue, the glue flows to the glue discharging mechanism 300 through the second cavity 222, and the impurities in the glue are filtered and stored in the first cavity 221.

[0051] It can be understood that the first cavity 221 surrounds the second cavity 222. The diaphragm pump 120 pumps the glue in the glue supply barrel 110 to the first filtering mechanism 200. The glue flows to the glue discharging mechanism 300 through the inner side of the filter element 220 (i.e., the second cavity 222), and impurities such as glue films and particulate matters in the glue are isolated outside the filter element 220 (i.e., the first cavity 221).

[0052] The beneficial effect here is that impurities such as glue films and particulate matters in the glue are isolated outside the filter element 220, which can prevent the impurities in the glue from blocking the filter element 220, effectively reduce the cleaning and replacement frequency of the filter element 220, reduce the maintenance cost, and be beneficial to improving the service life of the first filtering mechanism 200.

[0053] In the embodiment of the present application, the housing 210 is a housing component of the first filtering mechanism 200. There is an accommodation space inside the housing 210, and the filter element 220 is accommodated in the accommodation space. The housing 210 can be cylindrical, conical or other shapes, and the shape of the housing 210 is not limited here.

[0054] In the embodiment of the present application, the filter element 220 is a component that plays a filtering role in the first filtering mechanism 200. The filter element 220 is a filter screen with a second cavity 222 inside. The filter screen can be cylindrical, conical or other shapes, and the number of layers of the filter screen can be one layer or at least two layers. The shape and number of layers of the filter screen are not limited here.

[0055] Further, please refer to Figure 2 and Figure 3 , the first filtering mechanism 200 further includes an exhaust port 201, a waste discharge port 202 and a glue discharge port 203. The glue discharge port 203 is communicated with the glue discharging mechanism 300 and is used for outputting the filtered glue. The exhaust port 201 communicates the top side of the second cavity 222 with the outside air. The waste discharge port 202 is communicated with the first cavity 221 and is used for discharging the impurities in the glue.

[0056] The beneficial effect here is that during the process of filtering the glue by the filtering mechanism, the filtered glue is output through the glue discharge port 203, the air bubbles in the glue in the second cavity 222 are discharged through the exhaust port 201, and the impurities in the first cavity 221 are discharged outside the first cavity 221 through the waste discharge port 202, so that the filtered glue is pure, which can prevent the impurities in the glue from blocking the filter element 220 and effectively reduce the cleaning and replacement frequency of the filter element 220.

[0057] In the embodiment of the present application, the exhaust port 201, the glue discharge port 203 and the waste discharge port 202 are respectively located on different sides of the filter element 220, so as to facilitate filtering the impurities and air bubbles in the glue and improve the space utilization rate. For example, the exhaust port 201 is located on the top side of the filter element 220, the glue discharge port 203 is located on the bottom side of the filter element 220, and the waste discharge port 202 is located on the circumferential side of the filter element 220.

[0058] In the embodiments of the present application, the number of the exhaust ports 201, the glue outlet 203 and the waste discharge port 202 is not limited to one, that is, the number of the exhaust ports 201, the glue outlet 203 and the waste discharge port 202 can all be at least two.

[0059] Furthermore, please refer to Figure 3 , the inner diameter of the filter element 220 is 71 mm, and the height of the filter element 220 is 254 mm. Different specifications of the filter element 220 can be used according to the glue characteristics, and the dimensions of the filter element 220 are not limited herein.

[0060] It should be noted that the inner diameter of the filter element 220 is also the dimension of the filter element 220 in the Figure 3 shown X direction, and the height of the filter element 220 is also the dimension of the filter element 220 in the Figure 3 shown Y direction.

[0061] The beneficial effect here is that: compared with the traditional filter element, the inner diameter and height of this filter element 220 are both increased by at least 32 times, the filtering effect is better, and the cleaning and replacement frequency of the filter element 220 is effectively reduced.

[0062] Please refer to Figure 1 and Figure 2 , the glue supply device further includes a pressure regulating mechanism 500, and the pressure regulating mechanism 500 is connected to the diaphragm pump 120 and is used to adjust the air pressure in the diaphragm pump 120.

[0063] It can be understood that the diaphragm pump 120 mainly realizes the suction and discharge of the glue based on the reciprocating motion of the diaphragm. For example: when the diaphragm moves upward, the volume inside the pump body increases to form a negative pressure, and the glue is sucked into the pump cavity; when the diaphragm moves downward, the volume inside the pump body decreases to form a positive pressure, and the glue is discharged from the pump cavity. The pressure regulating mechanism 500 is used to adjust the air pressure inside the pump body to control the reciprocating motion of the diaphragm inside the pump body.

[0064] The beneficial effect here is that: through the setting of the pressure regulating mechanism 500, the air pressure inside the pump body can be adjusted to control the reciprocating motion position of the diaphragm in the diaphragm pump 120, so as to realize the control of the suction amount or discharge amount of the glue and realize the continuous and stable spraying of the glue.

[0065] In the embodiments of the present application, the pressure regulating mechanism 500 is a component for adjusting the air pressure in the diaphragm pump 120, and the pressure regulating mechanism 500 can adopt various structural forms. Among them, the pressure regulating mechanism 500 and the diaphragm pump 120 can be directly connected, or can be indirectly connected through other intermediate parts. The connection manner between the pressure regulating mechanism 500 and the diaphragm pump 120 is not limited herein.

[0066] Specifically, please refer to Figure 1 and Figure 2, the pressure regulating mechanism 500 includes a pneumatic one-way valve 510, a pressure regulating valve 520 and a first pipeline 530. The first pipeline 530 is connected to the air inlet of the diaphragm pump 120 and is used to supply the first compressed gas. The pneumatic one-way valve 510 and the pressure regulating valve 520 are both arranged on the first pipeline 530. The pneumatic one-way valve 510 is used to make the first compressed gas can only be unidirectionally input into the air inlet of the diaphragm pump 120 from the first pipeline 530, and the pressure regulating valve 520 is used to regulate the air pressure of the first compressed gas.

[0067] It should be noted that after the first compressed gas is regulated to the preset air pressure by the pressure regulating valve 520, the pneumatic one-way valve 510 is opened, so that the first compressed gas regulated to the preset air pressure is input into the air inlet of the diaphragm pump 120 through the first pipeline 530, so as to make the glue supply pressure in the diaphragm pump 120 appropriate.

[0068] The beneficial effect here is that after the first compressed gas is regulated to the preset air pressure by the pressure regulating valve 520, it is unidirectionally input into the air inlet of the diaphragm pump 120 from the first pipeline 530 through the pneumatic one-way valve 510, so as to make the glue supply pressure in the diaphragm pump 120 appropriate, and the continuous and stable spraying of glue can be realized.

[0069] In the embodiment of the present application, the first pipeline 530 is connected to the air inlet of the diaphragm pump 120, and the first pipeline 530 is a flexible pipe to be applicable to different installation spaces.

[0070] In the embodiment of the present application, the pneumatic one-way valve 510 is a valve body for making the first compressed gas can only be unidirectionally input into the air inlet of the diaphragm pump 120 from the first pipeline 530. The pneumatic one-way valve 510 can be of various types such as spring type, ball type, diaphragm type, etc. The type of the pneumatic one-way valve 510 is not limited here. For example, the spring type pneumatic one-way valve 510 mainly consists of a valve body, a valve flap and a spring. When the pneumatic one-way valve 510 is in the closed state, the valve flap is pushed towards the valve seat by the spring to prevent gas flow; when the externally applied pressure exceeds the spring force above the valve flap, the valve flap will be pushed open upwards, and the gas can flow through the valve body. At this time, the pneumatic one-way valve 510 is in the open state.

[0071] In the embodiment of the present application, the pressure regulating valve 520 is a valve body for regulating the air pressure of the first compressed gas. The pressure regulating valve 520 can be of various types such as pneumatic type, hydraulic type, etc. The type of the pressure regulating valve 520 is not limited here.

[0072] Please refer to Figure 1 and Figure 2 , the glue discharging mechanism 300 includes a metering pump 310 and a glue coating member 320. The glue coating member 320 is arranged downstream of the first filtering mechanism 200 and is used for spraying glue. The metering pump 310 is arranged between the glue coating member 320 and the first filtering mechanism 200 and is used for controlling the flow rate of the glue.

[0073] It can be understood that the glue - applying member 320 is provided downstream of the first filtering mechanism 200, and the metering pump 310 is provided between the glue - applying member 320 and the first filtering mechanism 200. That is, during the glue transportation process, the glue flows through the first filtering mechanism 200, the metering pump 310, and the glue - applying member 320 in sequence. Among them, the metering pump 310 can accurately and quantitatively transport glue to the glue - applying member 320.

[0074] The beneficial effect here is that the glue filtered by the first filtering mechanism 200 is proportionally transported to the glue - applying member 320 by the metering pump 310 according to the production speed, enabling continuous and stable spraying of the glue.

[0075] In the embodiment of the present application, the metering pump 310 is a component for quantitatively transporting glue to the glue - applying member 320. The metering pump 310 is driven by a motor, causing the main shaft and the eccentric wheel to perform a rotary motion. The eccentric wheel then drives the crank - connecting rod mechanism, enabling the piston to perform a reciprocating motion in the pump chamber to achieve quantitative transportation of the glue. For example, when the plunger moves backward, a vacuum is formed in the pump chamber, the suction valve opens, and the glue is sucked into the pump chamber; when the plunger moves forward, the suction valve closes, the discharge valve opens, and the glue is discharged from the pump chamber under the push of the plunger.

[0076] In the embodiment of the present application, the glue - applying member 320 is a glue gun with a nozzle. Through the glue gun, the filtered glue can be continuously and stably sprayed. Among them, the number of nozzles is not limited to one, that is, the glue gun can have at least two nozzles to improve the spraying efficiency.

[0077] More specifically, please refer to Figure 1 and Figure 2 , the glue - discharging mechanism 300 further includes a gas - supplying member 330, a three - way joint 340, a second pipeline 350, and a third pipeline 360. The gas - supplying member 330 is used to supply the second compressed gas. The second pipeline 350 is used to control the glue discharge of the glue - applying member 320. The third pipeline 360 is used to open and close the pneumatic one - way valve 510. One end of the second pipeline 350 is connected to the gas - supplying member 330 through the three - way joint 340, and the other end of the second pipeline 350 is connected to the glue - applying member 320. One end of the third pipeline 360 is connected to the gas - supplying member 330 through the three - way joint 340, and the other end of the third pipeline 360 is connected to the control port of the pneumatic one - way valve 510.

[0078] It can be understood that during the glue conveying process, the glue flows through the glue supply barrel 110 of the glue supply mechanism 100 to the diaphragm pump 120, the first filtering mechanism 200, and the glue discharging mechanism 300 of the glue supply mechanism 100 in sequence. Among them, the second compressed gas supplied by the air supply member 330 is divided into two parts through the three-way joint 340. One part of the second compressed gas enters the glue applying member 320 through the second pipeline 350 to control the glue application amount of the glue applying member 320; the other part of the second compressed gas enters the pneumatic one-way valve 510 through the third pipeline 360 to control the opening and closing of the pneumatic one-way valve 510. When the pneumatic one-way valve 510 is opened, the first compressed gas adjusted to the preset air pressure is input into the air inlet of the diaphragm pump 120 through the first pipeline 530 to make the glue supply pressure in the diaphragm pump 120 appropriate.

[0079] The beneficial effect here is that one part of the second compressed gas enters the glue applying member 320 through the second pipeline 350 to control the glue application amount of the glue applying member 320; the other part of the second compressed gas enters the pneumatic one-way valve 510 through the third pipeline 360 to control the opening and closing of the pneumatic one-way valve 510, thereby controlling the operation of the diaphragm pump 120, ensuring that the glue supply pressure in the diaphragm pump 120 is appropriate, and at the same time ensuring stable glue application of the glue applying member 320, and enabling continuous and stable spraying of the glue.

[0080] In the embodiment of the present application, the air supply member 330 is a component for supplying the second compressed gas. For example, the air supply member 330 is a compressor or other compression mechanism provided outside the glue applying member 320.

[0081] In the embodiment of the present application, the three-way joint 340 has three ports, and the three ports are respectively connected to the air supply member 330, the second pipeline 350, and the third pipeline 360. The three-way joint 340 can be of types such as an equal-diameter three-way joint, a reducing three-way joint, or an inclined three-way joint, etc. The type of the three-way joint 340 is not limited herein.

[0082] In the embodiment of the present application, both the second pipeline 350 and the third pipeline 360 are flexible pipes to be suitable for different installation spaces.

[0083] Please refer to Figure 1 and Figure 2 , a cigarette making machine in an embodiment includes the above-mentioned glue supply device.

[0084] It should be noted that the above-mentioned cigarette making machine further includes components such as a packaging device. The packaging device is arranged downstream of the glue supply device and is used for assembling cigarette rods.

[0085] In the above-mentioned cigarette making machine, the glue supply barrel 110 is under normal temperature and pressure. The diaphragm pump 120 is used to extract the glue in the glue supply barrel 110 to the first filtering mechanism 200 for filtering, and then the filtered glue is sprayed through the glue discharging mechanism 300. Since the diaphragm pump 120 itself has a certain pre-pressure during the glue conveying process, there is no need to rely on applying pressure in the glue supply barrel 110 to convey the glue, and it is not necessary to stop the machine when filling the glue, so the continuous and stable conveying of the glue can be realized; the glue is filtered by the first filtering mechanism 200 and then sprayed, and the sprayed glue is pure, greatly reducing the probability of the glue discharging mechanism 300 being blocked, and the continuous and stable spraying of the glue can be realized, which is beneficial to improving the operation efficiency of the glue supply device and effectively reducing the production cost.

[0086] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0087] The above-described embodiments only represent several implementation manners of the present application, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several deformations and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the appended claims.

Claims

1. A glue supply device for a cigarette making machine, characterized in that: The glue supply device comprises: The glue supply mechanism (100) comprises a glue supply barrel (110) and a diaphragm pump (120), wherein the glue supply barrel (110) is in a state of normal temperature and pressure and is used to contain glue, and the diaphragm pump (120) is connected to the glue supply barrel (110); A first filtering mechanism (200) is disposed downstream of the glue supply mechanism (100); A glue discharging mechanism (300) is arranged downstream of the first filtering mechanism (200); The diaphragm pump (120) is used to extract the glue in the glue supply barrel (110) to the first filtering mechanism (200), the first filtering mechanism (200) is used to filter the glue, and the glue output mechanism (300) is used to receive the glue output by the first filtering mechanism (200) and spray the glue.

2. The glue supply device according to claim 1, characterized in that: The top side of the glue supply barrel (110) has an opening (111) in communication with the outside air. The glue supply device further comprises a second filtering mechanism (400). The second filtering mechanism (400) is installed at the opening (111) of the glue supply barrel (110).

3. The glue supply device according to claim 2, characterized in that: The second filtering mechanism (400) is a filter having a plurality of filter holes.

4. The glue supply device according to claim 1, characterized in that: The first filtering mechanism (200) comprises a housing (210) and a filter element (220), the filter element (220) being accommodated in the housing (210), the outer wall of the filter element (220) being spaced apart from the inner wall of the housing (210) and forming a first cavity (221) therebetween, and the interior of the filter element (220) having a second cavity (222); When the filtering mechanism filters the glue, the glue flows to the glue outlet mechanism (300) through the second cavity (222), and impurities in the glue are filtered and stored in the first cavity (221).

5. The glue supply device according to claim 4, characterized in that: The first filtering mechanism (200) further comprises an exhaust port (201), a waste outlet (202) and a glue outlet (203); the glue outlet (203) is in communication with the glue outlet mechanism (300) and is used to output filtered glue; the exhaust port (201) is in communication with the top side of the second cavity (222) and the outside air; the waste outlet (202) is in communication with the first cavity (221) and is used to discharge impurities in the glue.

6. The glue supply device according to claim 1, characterized in that: The glue supply device further comprises a pressure regulating mechanism (500), wherein the pressure regulating mechanism (500) is connected to the diaphragm pump (120) and is used to regulate the air pressure in the diaphragm pump (120).

7. The glue supply device according to claim 6, characterized in that: The pressure regulating mechanism (500) comprises an air-controlled one-way valve (510), a pressure regulating valve (520) and a first pipeline (530); the first pipeline (530) is connected to the air inlet of the diaphragm pump (120) and is used to supply a first compressed gas; the air-controlled one-way valve (510) and the pressure regulating valve (520) are both arranged on the first pipeline (530); the air-controlled one-way valve (510) is used to allow the first compressed gas to be input from the first pipeline (530) to the air inlet of the diaphragm pump (120) in only one direction; and the pressure regulating valve (520) is used to adjust the pressure of the first compressed gas.

8. The glue supply device according to claim 7, characterized in that: The glue discharging mechanism (300) comprises a metering pump (310) and a glue coating member (320); the glue coating member (320) is arranged downstream of the first filtering mechanism (200) and is used for spraying the glue; the metering pump (310) is arranged between the glue coating member (320) and the first filtering mechanism (200) and is used for controlling the flow rate of the glue.

9. The glue supply device according to claim 8, characterized in that: The glue discharging mechanism (300) further comprises an air supply component (330), a three-way joint (340), a second pipeline (350) and a third pipeline (360), wherein the air supply component (330) is used to supply a second compressed gas, the second pipeline (350) is used to control the glue discharging of the glue coating component (320), and the third pipeline (360) is used to open and close the gas-controlled one-way valve (510); One end of the second pipeline (350) is connected to the air supply component (330) via the three-way connector (340), and the other end of the second pipeline (350) is connected to the glue coating component (320); One end of the third pipeline (360) is connected to the air supply component (330) via the three-way connector (340), and the other end of the third pipeline (360) is connected to the control port of the air-controlled one-way valve (510).

10. A cigarette making machine, characterized in that: It comprises the glue supply device as described in any one of claims 1-9.

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