glue pot with buffer tank

Abstract

The application discloses a glue supply machine with a buffer tank on a melting glue pressing disc, which comprises a pressing disc assembly, a buffer assembly and a conveying assembly. The pressing disc assembly comprises a melting glue pressing disc, the melting glue pressing disc can be moved into a glue storage barrel, the melting glue pressing disc is provided with a pressing disc glue outlet for glue outflow, the buffer assembly comprises a buffer tank, the buffer tank has a buffer cavity, the buffer tank is provided with a buffer glue inlet and a buffer glue outlet which are in communication with the buffer cavity, the buffer glue inlet is in communication with the pressing disc glue outlet, and the conveying assembly is provided with a conveying glue inlet which is in communication with the buffer glue outlet. During the working process of the glue supply machine, when the glue in the glue storage barrel is used up, a new glue storage barrel needs to be replaced. At this time, since the buffer cavity still stores a certain amount of glue, the conveying assembly can continue to convey the glue in the buffer cavity to a glue using equipment for glue coating and other glue using operations, so that the glue supply machine can realize non-stop glue supply when the glue storage barrel is replaced, the glue supply efficiency and stability are greatly improved, and the production efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of hot melt adhesive application equipment technology, and in particular to an adhesive feeder with a buffer tank on the melt pressure plate. Background Technology

[0002] In related technologies, industries such as woodworking (large panel veneer), wall panel wrapping, and textile composites often use polyurethane reactive hot melt adhesive (PUR) for multi-layer material lamination. This requires high-speed, large-area adhesive application. To ensure the adhesive supply speed keeps pace with production demands, a standard large-diameter pressure plate hot melt adhesive machine (approximately 575mm) is typically used, with the corresponding PUR adhesive packaged in a 200-liter standard straight iron drum. Its basic working principle is as follows: the heated pressure plate melts the PUR adhesive, and the molten PUR adhesive enters a gear pump under pressure. Driven by a motor, the gear pump supplies the molten PUR adhesive along the delivery pipe and glue gun to the adhesive-using equipment. However, this type of pressure plate hot melt adhesive supply machine has the following drawbacks: changing the adhesive requires machine shutdown, continuous production cannot be achieved, and production efficiency is low. When a bucket of PUR adhesive is used up and the pressure plate is pressed to the bottom, the entire production line needs to be shut down because there is no adhesive to pump continuously. Then, the pressure plate is raised, the empty bucket is removed, the pressure plate and sealing ring are cleaned, sealing grease is applied, a new bucket of PUR adhesive is loaded under the pressure plate, its position is adjusted, the pressure plate is pressed down again, and the machine waits for the adhesive to melt and for air to be released. This entire process takes approximately 10-25 minutes of downtime, resulting in wasted time and material waste. Summary of the Invention

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a glue supply machine with a buffer tank on the melt glue pressing plate, which can achieve glue supply without stopping the machine and improve production efficiency.

[0004] A glue dispenser with a buffer tank on a melt pressure plate according to an embodiment of the present invention includes:

[0005] The pressure plate assembly includes a melting pressure plate, which can be moved into a glue storage tank to heat the glue in the storage tank. The melting pressure plate is provided with a pressure plate outlet for the glue to flow out.

[0006] The buffer assembly includes a buffer tank installed on the upper end of the melt pressure plate. The buffer tank has a buffer cavity and is provided with a buffer inlet and a buffer outlet communicating with the buffer cavity. The buffer inlet is connected to the outlet of the pressure plate.

[0007] The conveying assembly is provided with a conveying glue inlet, which is connected to the buffer glue outlet. The conveying assembly is used to convey the melted glue to the glue-using equipment.

[0008] The glue dispenser with a buffer tank on the melt pressure plate according to an embodiment of the present invention has at least the following beneficial effects:

[0009] During the operation of the glue supply machine, when the glue in the storage tank is used up, a new storage tank needs to be replaced. At this time, since the buffer chamber of the buffer tank still stores a certain amount of glue, the conveying component can continue to transport the glue in the buffer chamber to the glue application equipment for glue application operations such as gluing. This allows the glue supply machine of the present invention to achieve non-stop glue supply when changing the storage tank, which greatly improves the efficiency and stability of glue supply, thereby improving production efficiency.

[0010] According to some embodiments of the present invention, the buffer tank is further provided with a filtering device, which divides the buffer chamber into an inlet chamber and an outlet chamber, wherein the inlet of the buffer is connected to the inlet chamber and the outlet of the buffer is connected to the outlet chamber.

[0011] According to some embodiments of the present invention, the filtering device includes a filter screen, a first support plate and a second support plate, wherein the filter screen is sandwiched between the first support plate and the second support plate.

[0012] According to some embodiments of the present invention, the inner wall of the buffer cavity is provided with a retaining ring, and the first support plate and the second support plate are mounted on the retaining ring.

[0013] According to some embodiments of the present invention, the buffer tank is further provided with an exhaust device, the exhaust device being connected to the glue inlet chamber, and the exhaust device being used to discharge the gas in the glue inlet chamber.

[0014] According to some embodiments of the present invention, the venting device includes an venting valve and a plug, the buffer tank is provided with an venting pipe communicating with the glue inlet chamber, the venting valve is installed inside the venting pipe, and the plug is detachably installed at the venting end of the venting pipe.

[0015] According to some embodiments of the present invention, the buffer tank is further provided with a pressure sensor, which is installed on the cavity wall of the glue inlet chamber near the filter device, and the pressure sensor is used to sense the pressure of the glue in the glue inlet chamber.

[0016] According to some embodiments of the present invention, the buffer tank is further provided with a first guide block, which is installed on the cavity wall at the top of the glue inlet cavity, and the first guide block has a first inclined surface that slopes upward toward the air inlet end of the exhaust pipe.

[0017] According to some embodiments of the present invention, the buffer tank is further provided with a second guide block, which is disposed on the cavity wall at the bottom of the dispensing cavity, and the second guide block has a second inclined surface that slopes downward toward the buffer dispensing port.

[0018] According to some embodiments of the present invention, the glue inlet chamber is located above the glue outlet chamber, the buffer tank is provided with a glue inlet pipe, one end of the glue inlet pipe is connected to the bottom wall of the glue outlet chamber, and the other end passes through the filter device upward. The inlet of the glue inlet pipe constitutes the buffer glue inlet, and the buffer glue outlet is provided on the side wall of the glue outlet chamber.

[0019] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0020] Additional aspects and advantages of the invention will become apparent and readily understood in conjunction with the following description of the embodiments, in which:

[0021] Fig. 1 This is a schematic diagram of the structure of a glue supply machine with a buffer tank on the melt pressure plate according to some embodiments of the present invention;

[0022] Fig. 2 This is a schematic diagram of the structure of a caching component according to some embodiments of the present invention.

[0023] The attached icons are numbered as follows:

[0024] Buffer assembly 100; tank body 110; glue inlet chamber 111; glue outlet chamber 112; buffer glue inlet 113; buffer glue outlet 114; exhaust pipe 115; glue inlet pipe 116; cover plate 120; heat insulation cover 130; filter device 140; first support plate 141; filter screen 142; second support plate 143; retaining ring 144; exhaust valve 150; plug 160; pressure sensor 170; first guide block 180; first inclined surface 181; second guide block 190; second inclined surface 191;

[0025] Pressure plate assembly 200; melt pressure plate 210; pressure plate dispensing port 211; lifting power mechanism 220; lifting frame 230;

[0026] Conveying assembly 300; Conveying pump 310; Conveying inlet 311; Conveying pipe 320;

[0027] Electrical control box 400; glue storage tank 500; glue application equipment 600. Detailed Implementation

[0028] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0029] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, horizontal, vertical, etc., are based on the orientation or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0030] In the description of this invention, the use of "first" and "second" is for the purpose of distinguishing technical features only, and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or the order of the technical features indicated.

[0031] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0032] In related technologies, industries such as wood panel veneer, wall panel wrapping, and textile composites use polyurethane reactive hot melt adhesive (PUR) for multi-layer material lamination, requiring high-speed, large-area adhesive application. To ensure the adhesive supply speed keeps pace with production process demands, standard large-scale pressure plate hot melt adhesive machines with a pressure plate diameter of approximately 575mm are typically used, with the corresponding PUR adhesive packaged in 200-liter standard straight iron drums. The basic working principle is as follows: the heated pressure plate melts the PUR adhesive, and the molten PUR adhesive enters a gear pump under pressure. Driven by a motor, the gear pump supplies the molten PUR adhesive along the delivery pipe and glue gun to the adhesive-using equipment. However, this type of pressure plate hot melt adhesive supply machine has the following drawbacks: changing the adhesive requires machine shutdown, it cannot achieve fully continuous production, and production efficiency is low. When a bucket of PUR adhesive is used up and the pressure plate is pressed to the bottom, the entire production line needs to be stopped because there is no adhesive to pump continuously. The pressure plate is then raised, the empty bucket is removed, the pressure plate and sealing ring are cleaned, sealing grease is applied, a new bucket of PUR adhesive is loaded under the pressure plate, its position is adjusted, the pressure plate is pressed down, and the machine waits for the adhesive to melt and for air to be released. This entire process takes approximately 10-25 minutes of downtime, resulting in wasted time and material waste.

[0033] Therefore, this invention proposes a glue supply machine with a buffer tank on the melt glue pressure plate, which can achieve glue change without stopping the machine, reduce downtime waste, improve glue supply efficiency and stability, and thus help improve production efficiency.

[0034] Reference Figs. 1-2The glue dispenser with a buffer tank on the melt glue press plate proposed in the embodiments of the present invention includes a press plate assembly 200, a buffer assembly 100, and a conveying assembly 300. The press plate assembly 200 includes a melt glue press plate 210, which is located above a glue storage tank 500. The glue storage tank 500 stores glue, such as polyurethane reactive hot melt adhesive (PUR glue) or other types of hot melt adhesive. The melt glue press plate 210 can move into the glue storage tank 500 to contact the glue on the upper surface of the glue storage tank 500 and heat the glue to melt it. The melt glue press plate 210 is provided with a press plate outlet 211 for glue to flow out. The melted glue in the glue storage tank 500 can flow out to the outside through the press plate outlet 211. Specifically, the pressing plate assembly 200 may also include a lifting power mechanism 220 and a lifting frame 230. The lifting power mechanism 220 may be a cylinder or a motor, etc. The lifting power mechanism 220 can drive the melt pressing plate 210 to move vertically through the lifting frame 230, so that it can move away from or closer to the glue storage tank 500.

[0035] The buffer assembly 100 includes a buffer tank mounted on the melt glue pressure plate 210. The buffer tank has a buffer chamber, the volume of which can be specifically set according to actual needs to ensure continuous glue supply to the glue-using equipment 600 during glue replacement. For example, if glue replacement typically takes 15-20 minutes, the glue capacity of the buffer chamber can be set to meet the glue consumption for approximately 0.5 hours of continuous glue supply. Of course, to further improve the stability of glue supply and prevent other situations from increasing the glue replacement time, the glue capacity of the buffer chamber can be set to meet the glue consumption for 0.5-2 hours of continuous glue supply. The buffer tank is provided with a buffer glue inlet 113 and a buffer glue outlet 114 communicating with the buffer chamber. The buffer glue inlet 113 is connected to the pressure plate glue outlet 211, so the glue in the storage tank 500 can sequentially enter the buffer chamber through the pressure plate glue outlet 211 and the buffer glue inlet 113, and then be discharged through the buffer glue outlet 114. Specifically, the buffer container includes a container body 110, a cover plate 120, and an insulation cover 130. The container body 110 is generally cylindrical, but can also be other suitable shapes. The lower end of the container body 110 is attached to the upper end of the melt pressure plate 210. The upper end of the container body 110 has an opening, and the cover plate 120 is detachably placed over the opening to form a buffer cavity with the container body 110. The insulation cover 130 covers the outside of the container body 110 and the cover plate 120, providing insulation and reducing the heat transfer of the glue inside the container body 110 to the outside air. The cover plate 120 and the container body 110 can be connected and fixed with multiple bolts and sealed with a high-temperature resistant sealing ring. The container body 110 is made of a thermally conductive metal material, such as aluminum alloy, with a thickness of 8mm or more, to withstand greater pressure. It should be noted that since the bottom of the tank 110 is attached to the upper end of the melting platen 210, on the one hand, the space above the melting platen 210 can be fully utilized, reducing the space occupied by the glue supply machine and making installation more convenient. On the other hand, it is beneficial for the melting platen 210 to transfer heat to the buffer tank, so that when the glue is buffered in the buffer tank, the temperature of the glue can be prevented from dropping below the set temperature, which helps to ensure the normal use of the glue.

[0036] The conveying assembly 300 is provided with a conveying inlet 311, which is connected to the buffer outlet 114. The conveying assembly 300 is used to convey melted glue to the glue-applying device 600. Specifically, the conveying assembly 300 includes a conveying pump 310 and a conveying pipe 320. The conveying pump 310 can be a gear pump or other pumps. When the conveying pump 310 is working, it draws the glue in the buffer chamber through the buffer outlet 114, then enters the conveying inlet 311, and finally pumps it to the glue-applying device 600 through the conveying pipe 320. The glue-applying device 600 can be a spray gun or other type of glue-applying device 600.

[0037] During the operation of the glue supply machine, when the glue in the glue storage tank 500 is used up, a new glue storage tank 500 needs to be replaced. At this time, since the buffer chamber of the buffer tank still stores a certain amount of glue, the conveying component 300 can continue to convey the glue in the buffer chamber to the glue application equipment 600 for glue application operations such as gluing. Thus, the glue supply machine of the present invention can achieve glue supply without stopping when the glue storage tank 500 is replaced, which greatly improves the efficiency and stability of glue supply, thereby improving production efficiency.

[0038] It should be noted that in existing technologies, due to their formulation design, some PUR adhesives exhibit a thin, fragile, and barely perceptible skin formed on their surface layer during storage and transportation before use, reacting with trace amounts of moisture in the nitrogen gas injected into the packaging. Upon opening the container, this skin is broken down by the heated melting platen 210 and enters the transfer pump 310 with the melted PUR adhesive. There, it is further shredded into small pieces and discharged through the transfer pipe 320 into the adhesive application equipment 600, where it is then applied to the substrate, leading to the batch scrapping of the composite product. Furthermore, after the melting platen 210 heats the adhesive in the storage tank 500 for an extended period, some adhesive in certain corners will age and deteriorate due to prolonged heating, forming impurities such as gels or carbon deposits. These impurities, intermittently entering the adhesive application equipment 600 with the normally melted PUR fluid, also contribute to the scrapping of the composite product. To address the aforementioned issues, in some embodiments of the present invention, the buffer tank is further equipped with a filter device 140. The filter device 140 divides the buffer chamber into an inlet chamber 111 and an outlet chamber 112. The inlet 113 of the buffer tank is connected to the inlet chamber 111, and the outlet 114 of the buffer tank is connected to the outlet chamber 112. With this configuration, when the glue in the storage tank 500 enters the buffer chamber, it first enters the inlet chamber 111, then is filtered by the filter device 140 before flowing into the outlet chamber 112, and finally exits from the outlet 114. It is then conveyed to the glue-applying equipment 600 via the conveying assembly 300. When the glue passes through the filter device 140, the filter device 140 can filter out various impurities such as skins, gels, and carbon deposits within the glue, preventing these impurities from being conveyed to the glue-applying equipment 600. This significantly improves the yield of the glued composite product and reduces risk.

[0039] Understandably, to achieve effective filtration of impurities, in some embodiments of the present invention, the filtration device 140 includes a filter screen 142, a first support plate 141, and a second support plate 143. The filter screen 142 is sandwiched between the first support plate 141 and the second support plate 143. The glue enters the glue outlet chamber 112 after being filtered through the above three-layer planar structure, which helps to improve the filtration effect. Specifically, the first support plate 141 is located above the filter screen 142, and the second support plate 143 is located below the filter screen 142. The first support plate 141 and the second support plate 143 can be connected by a connector to clamp and fix the filter screen 142. The first support plate 141 and the second support plate 143 can be made of metal and have densely distributed small holes, so that the glue can pass through and some larger particle size impurities can be filtered. Specifically, the second support plate 143 plays a supporting role, so the thickness of the second support plate 143 is usually thicker than the thickness of the first support plate 141. For example, in some embodiments, the thickness of the first support plate 141 is 1-5 mm, and the thickness of the second support plate 143 is 5-15 mm. The filter screen 142 can be a stainless steel filter screen 142, and its mesh size can be specifically set according to the particle size of the impurities that need to be filtered. For example, in some embodiments, the mesh size of the filter screen 142 is 40-400 mesh, which can filter out most of the impurities contained in the glue, greatly reducing the impact of impurities on the product.

[0040] Understandably, to facilitate the installation and removal of the filter device 140, in some embodiments of the present invention, a retaining ring 144 is provided on the inner wall of the buffer chamber, and the outer edge of the second support plate 143 overlaps the upper end of the retaining ring 144. During installation, the filter device 140 is placed directly on the retaining ring 144, so that the outer edge of the second support plate 143 overlaps the upper end of the retaining ring 144. Under the weight of the filter device 140 and the pressure of the adhesive, the filter device 140 can be stably installed on the retaining ring 144, making installation very convenient. When it is necessary to replace or clean the filter screen 142, the filter device 140 can be directly removed from above, making disassembly very convenient.

[0041] It should be noted that during the production and use of PUR adhesive, it is difficult to completely avoid the generation of a small number of air bubbles. In industries such as wood paneling and wall covering that require scraping, if the PUR adhesive contains air bubbles, the covered product will have defects at the corresponding locations of the air bubbles, resulting in scrap. Therefore, in some embodiments of the present invention, the buffer tank is also equipped with an exhaust device connected to the glue inlet chamber 111. The exhaust device is used to expel gas from the glue inlet chamber 111. When the adhesive enters the glue inlet chamber 111, the gas carried by the adhesive rises and accumulates at the top of the glue inlet chamber 111. At this time, the exhaust device extracts the gas from the glue inlet chamber 111, thereby reducing the gas content in the adhesive, reducing the generation of air bubbles, and improving the quality of the adhesive application.

[0042] Understandably, to prevent outside air from entering the glue inlet chamber 111 through the exhaust device, in some embodiments of the present invention, the exhaust device includes an exhaust valve 150 and a plug 160. The buffer tank is provided with an exhaust pipe 115 communicating with the glue inlet chamber 111. The exhaust valve 150 is installed inside the exhaust pipe 115, and the plug 160 is detachably installed at the outlet end of the exhaust pipe 115. Under normal conditions, the plug 160 is sealed to the outlet end of the exhaust pipe 115, preventing outside air from entering the glue inlet chamber 111 through the exhaust pipe 115. When venting is required, the plug 160 is removed, and then the exhaust valve 150 is activated, which extracts the gas in the glue inlet chamber 111 to the outside. It should be noted that the inlet end of the exhaust pipe 115 is located approximately level with the top of the glue inlet chamber 111, thereby venting as much gas as possible from the glue inlet chamber 111 while avoiding the extraction of glue. After exhaust is complete, close the exhaust valve 150, then apply high-temperature grease to the plug 160 and connect it to the exhaust outlet of the exhaust pipe 115 to seal the outlet and prevent outside gas from entering. Specifically, the plug 160 can be connected to the exhaust outlet of the exhaust pipe 115 by a threaded connection, or by an interference fit or other connection methods.

[0043] It is understood that the glue supply machine typically also includes an electrical control box 400, which controls the pressure plate assembly 200 and the conveying assembly 300. In some embodiments of the present invention, the buffer tank is also equipped with a pressure sensor 170. The pressure sensor 170 is installed on the cavity wall of the glue inlet chamber 111 near the filter device 140. The pressure sensor 170 is used to sense the pressure of the glue in the glue inlet chamber 111. When the glue pressure data sensed by the pressure sensor 170 is too high, it may be that the filter device 140 is severely clogged, and the filter screen 142 needs to be cleaned or replaced. When the glue pressure data sensed by the pressure sensor 170 is close to 0, it indicates that the glue level in the glue inlet chamber 111 is basically level with or lower than the pressure sensor 170. At this time, it is necessary to add glue as soon as possible or take measures to stop the machine. The pressure sensor 170 transmits the pressure data to the electrical control box 400, and the electrical control box 400 can display the pressure data through a display screen or other devices. Of course, when the pressure data is too high or close to 0, the electrical control box 400 can also issue a prompt to the user through a buzzer or alarm light to remind the user to take appropriate measures as soon as possible.

[0044] Understandably, in order to allow the gas entering the glue inlet chamber 111 to flow quickly to the vicinity of the air inlet end of the exhaust pipe 115, in some embodiments of the present invention, the buffer tank is further provided with a first guide block 180. The first guide block 180 is installed on the top cavity wall of the glue inlet chamber 111, and the first guide block 180 has a first inclined surface 181 that slopes upwards towards the air inlet end of the exhaust pipe 115. When a new glue storage tank 500 is replaced, some gas will enter the glue inlet chamber 111 of the buffer tank through the melt glue pressure plate 210. At this time, under the action of the first guide block 180, the gas converges along the first inclined surface 181 to the vicinity of the air inlet end of the exhaust pipe 115. At this time, the exhaust valve 150 is opened, so that the gas can be quickly extracted. Specifically, the end of the first inclined surface is flush with the air inlet end, which can further improve the smoothness of exhaust.

[0045] Understandably, in order to facilitate the smooth discharge of glue from the dispensing cavity 112 through the outlet, in some embodiments of the present invention, the buffer tank is further provided with a second guide block 190. The second guide block 190 is disposed on the bottom wall of the dispensing cavity 112, and has a second inclined surface 191 that slopes downwards towards the buffer dispensing outlet 114. When the glue enters the dispensing cavity 112 after being filtered by the filter device 140, the glue converges along the second inclined surface 191 of the second guide block 190 to the buffer dispensing outlet 114, thereby allowing the glue to be discharged smoothly through the buffer dispensing outlet 114. Specifically, the end of the second inclined surface 191 is flush with the buffer dispensing outlet 114, which further improves the smoothness of glue dispensing. Of course, the surface of the second guide block 190 and the cavity wall of the buffer tank can be treated with surface treatment processes to reduce the impact on the glue. For example, Teflon paint can be used for surface treatment to reduce the impact on the glue.

[0046] Understandably, to improve installation convenience, in some embodiments of the present invention, the buffer tank is installed on the upper end of the melt pressure plate 210, the glue inlet chamber 111 is located above the glue outlet chamber 112, and the buffer tank is provided with a glue inlet pipe 116. One end of the glue inlet pipe 116 is connected to the bottom wall of the glue outlet chamber 112, and the other end passes through the filter device 140. The inlet of the glue inlet pipe 116 constitutes the buffer glue inlet port 113, and the buffer glue outlet port 114 is provided on the side wall of the glue outlet chamber 112. With the above arrangement, the distance the glue travels into the buffer tank can be reduced, preventing the glue temperature from dropping too much. Moreover, the heat from the melt pressure plate 210 can also be transferred to the buffer tank, further slowing down the temperature drop of the glue. The glue enters the glue inlet chamber 111 through the glue inlet pipe 116, then passes through the filter device 140 under its own gravity and pressure, then enters the glue outlet chamber 112, and is discharged through the glue outlet port. Of course, the second guide block 190 can be made of a thermally conductive metal material, such as aluminum alloy, so that more heat from the melt pressure plate 210 can be transferred to the glue in the dispensing cavity 112 to maintain the temperature of the glue. Furthermore, to further improve the thermal conductivity of the second guide block 190, grooves can be provided on its upper surface to increase the heat transfer area, thereby further helping to maintain the temperature of the glue in the buffer cavity.

[0047] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A glue dispenser with a buffer tank on a melt glue pressing plate, characterized in that, include: The pressure plate assembly includes a melting pressure plate, which can be moved into a glue storage tank to heat the glue in the storage tank. The melting pressure plate is provided with a pressure plate outlet for the glue to flow out. The buffer assembly includes a buffer tank installed on the upper end of the melt pressure plate. The buffer tank has a buffer cavity and is provided with a buffer inlet and a buffer outlet communicating with the buffer cavity. The buffer inlet is connected to the outlet of the pressure plate. The conveying assembly is provided with a conveying glue inlet, which is connected to the buffer glue outlet. The conveying assembly is used to convey the melted glue to the glue-using equipment. The buffer tank is further equipped with a filter device, which divides the buffer chamber into an inlet chamber and an outlet chamber. The inlet of the buffer tank is connected to the inlet chamber, and the outlet of the buffer tank is connected to the outlet chamber. The inlet chamber is located above the outlet chamber. The buffer tank is equipped with an inlet pipe, one end of which is connected to the bottom wall of the outlet chamber, and the other end passes through the filter device. The inlet of the inlet pipe constitutes the inlet of the buffer tank, and the outlet of the buffer tank is located on the side wall of the outlet chamber.

2. The glue supply machine with a buffer tank on the melt glue pressing plate according to claim 1, characterized in that, The filtration device includes a filter screen, a first support plate, and a second support plate, with the filter screen sandwiched between the first support plate and the second support plate.

3. The glue supply machine with a buffer tank on the melt glue pressing plate according to claim 2, characterized in that, The inner wall of the buffer cavity is provided with a retaining ring, and the first support plate and the second support plate are installed on the retaining ring.

4. The glue supply machine with a buffer tank on the melt glue pressing plate according to claim 1, characterized in that, The buffer tank is also equipped with an exhaust device, which is connected to the glue inlet chamber and is used to exhaust the gas in the glue inlet chamber.

5. The glue supply machine with a buffer tank on the melt glue pressing plate according to claim 4, characterized in that, The exhaust device includes an exhaust valve and a plug. The buffer tank is provided with an exhaust pipe that communicates with the glue inlet chamber. The exhaust valve is installed inside the exhaust pipe, and the plug is detachably installed at the exhaust end of the exhaust pipe.

6. The glue supply machine with a buffer tank on the melt glue pressing plate according to claim 5, characterized in that, The buffer tank is also equipped with a pressure sensor, which is installed on the cavity wall of the glue inlet chamber near the filter device. The pressure sensor is used to sense the pressure of the glue in the glue inlet chamber.

7. The glue supply machine with a buffer tank on the melt glue pressing plate according to claim 5, characterized in that, The buffer tank is also provided with a first guide block, which is installed on the top wall of the glue inlet chamber. The first guide block has a first inclined surface that slopes upward toward the air inlet end of the exhaust pipe.

8. The glue supply machine with a buffer tank on the melt glue pressing plate according to claim 1, characterized in that, The buffer tank is also provided with a second guide block, which is disposed on the bottom wall of the dispensing cavity. The second guide block has a second inclined surface that slopes downward toward the dispensing port of the buffer tank.

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