Circulating glue spraying device

Abstract

The utility model discloses a circulating glue spraying device which comprises a fixing frame, a pipe blank formed through a winding device or a weaving device is arranged in the middle of the fixing frame, a collecting tank capable of collecting resin is arranged below the pipe blank, and the collecting tank is connected with a vacuum tank suspended above the pipe blank through an oil pumping pipe. The top of the vacuum tank is connected with a vacuum pump through an exhaust pipe, and the bottom of the vacuum tank is provided with a one-way valve element and enables resin falling materials to be poured to winding points or weaving confluence points of pipe blanks. The device is simple in structural design, low in manufacturing cost, capable of reducing labor intensity, continuous and uninterrupted in glue spraying, convenient to operate, less in resin waste and low in production cost.

Description

Technical Field

[0001] The utility model relates to the technical field of composite material preparation, in particular to a circulating glue spraying device. Background Art

[0002] Multi-layer composite pipes formed by winding, braiding, and pultrusion are now widely used, significantly improving their strength, toughness, impact resistance, corrosion resistance, insulation, and water resistance. Typically, the unpreg-impregnated fibers used in the winding and braiding layers of multi-layer composite pipes are impregnated with glue after winding or braiding. Because the winding or braiding is already tightly wound or braided, fiber yarn defects are prone to occur, resulting in a decrease in the pipe's strength, toughness, and impact resistance, seriously shortening its service life.

[0003] Currently, most glue spraying systems rely on manual pouring of resin into an overhead glue spraying tank, which then naturally pours downward onto the wrapping and braided layers. This increases labor intensity and can also lead to glue spraying interruptions if resin is not replenished before the tank runs out. A few glue spraying systems use oil pumps or pneumatic diaphragm pumps to pump resin from below into the overhead glue spraying tank. During holiday downtime, these pumps require extensive cleaning with alcohol or other solvents, generating significant amounts of waste and polluting the environment. Improper cleaning can easily damage or render these pumps useless.

[0004] In the prior art, the patent with announcement number CN210282913U discloses a resin sprinkling device for continuous fiber winding, comprising a fixed frame, a first sprinkling trough, a second sprinkling trough and a driving device, wherein the lower end of the first sprinkling trough is provided with a discharge trough, a partition is provided inside, and slide grooves are provided on both sides of the upper end of the partition, and there are two second sprinkling troughs, which are respectively located on both sides of the partition, the lower end of which is located in the first sprinkling trough and fixedly provided with a filter screen, the upper end of which is located outside the first sprinkling trough, and fixed plates are provided on both sides; the driving device is located at the side end of the first sprinkling trough, and comprises a driving motor, a crankshaft, a connecting rod and a connecting piece, a motor frame is provided below the driving motor, the crankshaft is connected to the output end of the driving motor, one end of the connecting rod is sleeved on the outside of the crank arm of the crankshaft, and the other end is connected to the fixed plate through a connecting piece; a glue mixing trough is provided just below the partition, an opening is provided on the left side of the glue mixing trough, and an L-shaped glue mixing plate is connected to the lower end of the opening, and the glue mixing plate is provided with a glue leakage hole; the utility model has the advantages of reasonable structure and not easy to cause blockage.

[0005] The patent with announcement number CN218132862U discloses a composite cantilever load-bearing beam pulling yarn quantitative circulation glue spraying system, including a fixed tube and a glue spraying mechanism arranged inside the fixed tube, the glue spraying mechanism includes a number of spirally fixed glue spraying components distributed on the inner wall of the fixed tube. This composite cantilever load-bearing beam pulling yarn quantitative circulation glue spraying system can evenly brush glue onto the cantilever load-bearing beam through the provided glue brushing components. The glue is quantitatively discharged through the glue brushing components without causing unnecessary waste. The glue brushing components do not overlap with each other, and no accumulation will occur when brushing glue. This glue spraying system can ensure that all parts of the cantilever load-bearing beam are evenly attached with glue, and at the same time, the glue will not be wasted during use, which not only meets production needs but also saves costs.

[0006] In the above technical solution, the glue brushing parts can evenly brush the glue onto the cantilever bearing beam, and the glue is discharged quantitatively through the glue brushing parts. The glue brushing parts do not overlap each other, but the dripping glue is not recovered, and the glue brushing parts are not easy to clean after shutdown.

[0007] In order to solve one of the above problems, the present application provides a circulating glue spraying device. Utility Model Content

[0008] The purpose of the utility model is to solve the problems existing in the prior art and to propose a circulating glue spraying device, which has a simple structural design, low manufacturing cost, reduced labor intensity, continuous and uninterrupted glue spraying, easy operation, less resin waste and low production cost.

[0009] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions: a circulating glue spraying device, including a fixed frame for supporting the main components of the entire device, a tube blank formed by a winding device or a weaving device is provided in the middle of the fixed frame, the winding device or the weaving device is other sub-mechanisms, which will not be described in detail here, and a collecting tank for collecting resin is provided under the tube blank, which can be used to pour an appropriate amount of resin for feeding, and can also collect resin dripping from the tube blank, the collecting tank is connected to a vacuum tank suspended above the tube blank through an oil extraction pipe, the top of the vacuum tank is connected to a vacuum pump through an exhaust pipe, a one-way valve core is provided at the bottom of the vacuum tank so that the resin is poured onto the winding point or weaving junction of the tube blank, the one-way valve core can be opened under the action of resin gravity to discharge, and when the vacuum pump is started and the vacuum tank is evacuated, the external atmospheric pressure pushes the one-way valve core to move up and close, at this time negative pressure is formed in the vacuum tank, and the resin in the collection tank can be lifted and extracted through the oil extraction pipe.

[0010] Furthermore, a glue pouring tank is provided between the vacuum tank and the tube blank to pour resin onto the winding point or weaving junction of the tube blank. The glue pouring tank is used to receive the blanking of the vacuum tank and play a buffering role.

[0011] Furthermore, the vacuum tank as described above includes a tank body and a top cover, and a hole is opened on the top cover to connect to the exhaust pipe, that is, an exhaust hole is provided in the middle of the top cover, and the exhaust hole is connected to the exhaust pipe above. A drain port is provided at the bottom of the tank body, and a one-way valve core is placed inside the drain port.

[0012] Furthermore, the top cover as described above is sealed and connected to the tank body, that is, the top cover is sealed around the vacuum tank body and is provided with a sealing ring, and the tank body is arranged on a fixing frame.

[0013] Furthermore, the top cover as described above is provided with filter cotton at the opening, that is, one or several layers of filter cotton are provided below the exhaust hole, and the filter cotton is used to filter the air to prevent foreign particles and atomized resin from entering the exhaust pipe. The tank body is provided with a hole at the side to connect the oil extraction pipe, and a pipe hole is provided at the waist of the vacuum tank to connect the oil extraction pipe.

[0014] Furthermore, the glue pouring tank as described above is placed below the drain outlet, and a glue pouring filter is provided in the glue pouring tank. The glue pouring filter is set to a single layer or several layers. On the one hand, it filters large particles of impurities and broken fibers, and on the other hand, it slows down the resin pouring speed, so that the impurity-free resin can be slowly poured onto the winding point or weaving point of the tube blank after passing through the glue outlet, so that the fibers of the tube blank can be impregnated with resin while being wound or weaved, which is conducive to fully impregnating the fibers. A glue outlet is processed at the bottom of the glue pouring tank.

[0015] Furthermore, the glue pouring tank as described above is installed on a fixed frame, and the glue outlet is placed just above the winding point or weaving junction of the tube blank to facilitate accurate resin dropping.

[0016] Furthermore, a collection filter is provided in the collection tank as described above, and the collection filter is arranged in a single layer or several layers. Large particles of impurities and broken fibers remain on the collection filter. A drainage hole is processed at the bottom of the collection tank to connect to the oil extraction pipe. Specifically, the mouth of the collection tank is large and the bottom is small, and a drainage hole is provided in the middle of the bottom. The drainage hole is connected to one end of the oil extraction pipe, and the other end of the oil extraction pipe is connected to the waist pipe hole of the vacuum tank.

[0017] Furthermore, the vacuum tank, glue spraying tank and collecting tank mentioned above are all fixed on the horizontal frame of the fixed frame.

[0018] Furthermore, the one-way valve core as described above cooperates with the liquid discharge port to open in one direction, and the resin freely falls downward from the liquid discharge port.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] (1) Simple structural design, low manufacturing cost and easy operation;

[0021] (2) Only a small amount of resin is needed for cyclic coating, so that the winding layer and the braided layer are fully impregnated, avoiding fiber dry yarn defects, less resin waste, and low production cost;

[0022] (3) Greatly reduce labor intensity and avoid interruption of glue spraying during production;

[0023] (4) When the machine is stopped, it is easy to clean and maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is the main view of the utility model;

[0025] Figure 2 for Figure 1 Cross-sectional view in the AA direction;

[0026] Figure 3 for Figure 2 Enlarged schematic diagram of point B in the middle.

[0027] In the figure: 1. Fixed frame; 2. Collection tank; 201. Drainage hole; 3. Collection filter; 4. Oil extraction pipe; 5. Vacuum tank; 501. Top cover; 502. Tank body; 503. Exhaust hole; 504. Filter cotton; 505. Drain port; 6. Exhaust pipe; 7. One-way valve core; 8. Vacuum pump; 9. Glue spraying filter; 10. Glue spraying tank; 11. Fiber yarn roll; 12. Fiber yarn; 13. Tube blank. DETAILED DESCRIPTION

[0028] In the description of this utility model, it should be understood that the terms "upper," "lower," "front," "back," "left," "right," "top," "bottom," "inner," and "outer," etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed, or operate in a specific direction. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0029] In the description of the present utility model, it should be noted that, unless otherwise expressly specified and limited, the terms "fixed", "installed", "connected", "set", etc. should be understood in a broad sense. For example, when an element is referred to as being "fixed to" another element, it can be directly on the other element or there can be an intermediate element. When an element is considered to be "installed on" another element, it can be directly on the other element or there can be an intermediate element. When an element is considered to be "connected" to another element, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be a communication between the two elements.

[0030] For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] Example 1

[0033] Reference Figure 1-3 As shown, a circulating glue spraying device of the present invention includes a fixing frame 1, which plays the role of supporting the main components of the entire device. A tube blank 13 formed by a winding device or a weaving device is provided in the middle of the fixing frame 1. The winding device or the weaving device is other sub-mechanisms and will not be described in detail here. A collecting tank 2 for collecting resin is provided below the tube blank 13. The function of the collecting tank 2 is to pour an appropriate amount of resin into the collecting tank 2 for feeding, and to also collect the resin dripping from the tube blank 13. The collecting tank 2 is connected to a vacuum tank 5 suspended above the tube blank 13 through an oil extraction pipe 4, and the top of the vacuum tank 5 is connected to a vacuum tank through an exhaust pipe 6. Pump 8, a one-way valve core 7 is set at the bottom of the vacuum tank 5, and the resin is poured onto the winding point or braiding junction of the tube blank 13. The vacuum pump 8 performs a vacuum operation on the vacuum tank 5, and the one-way valve core 7 is closed to form a negative pressure in the vacuum tank 5, so that the oil extraction pipe 4 extracts the resin collected in the collection tank 2 into the vacuum tank 5 for storage. Then the vacuum pump 8 is closed, and the resin in the vacuum tank 5 opens the one-way valve core 7 under the action of gravity, thereby infiltrating the winding point or braiding junction of the tube blank 13. The resin that is not impregnated and adhered to the fibers of the tube blank 13 continues to drip down and returns to the collection tank 2. This cycle is repeated to achieve uninterrupted glue pouring.

[0034] Example 2

[0035] Reference Figure 1-3 As shown, based on the technical solution of embodiment 1, a circulating glue spraying device, such as Figure 1 As shown, a glue pouring tank 10 is provided between the vacuum tank 5 and the tube blank 13 to pour resin onto the winding point or braiding junction of the tube blank 13. Specifically, the glue pouring tank 10 is placed below the drain port 505 and is used to receive the material after the one-way valve core 7 at the bottom of the vacuum tank 5 is opened. A glue pouring filter 9 is provided in the glue pouring tank 10, and a glue outlet is processed at the bottom of the glue pouring tank 10. The glue pouring filter 9 is configured as a single layer or multiple layers. On the one hand, it filters large particles of impurities and broken fibers, and on the other hand, it slows down the resin pouring speed. In this way, the impurity-free resin can be slowly poured onto the winding point or braiding point of the tube blank 13 after passing through the glue outlet. This allows the fibers of the tube blank 13 to be impregnated with resin while being wound or braided, which is conducive to sufficient impregnation of the fibers. Furthermore, the glue pouring tank 10 is mounted on the fixed frame 1, and the glue outlet is placed directly above the winding point or braiding junction of the tube blank 13 to facilitate accurate resin pouring.

[0036] Further, such as Figure 2 As shown, the collection tank 2 is provided with a collection filter 3. After the resin flows through one or more layers of the collection filter 3, large impurities and fiber fragments are retained on the collection filter 3. A drainage hole 201 is machined at the bottom of the collection tank 2 for connection to the oil extraction pipe 4. Specifically, the collection tank 2 has a large mouth and a small bottom, and its funnel-like structure facilitates the feeding and collection of resin. A drainage hole 201 is provided in the center of the bottom. The drainage hole 201 is connected to one end of the oil extraction pipe 4, and the other end of the oil extraction pipe 4 is connected to the waist pipe hole of the vacuum tank 5.

[0037] Example 3

[0038] Reference Figure 1-3 As shown, based on the technical solution of the above embodiment, a circulating glue spraying device, such as Figure 3 As shown, the vacuum tank 5 includes a tank body 502 and a top cover 501. The top cover 501 has an opening connected to the exhaust pipe 6. Specifically, an exhaust hole 503 is provided in the middle of the top cover 501, and the exhaust hole 503 is connected to the exhaust pipe 6 above. A drain port 505 is provided at the bottom of the tank body 502, and a one-way valve core 7 is installed in the drain port 505. In addition, the top cover 501 is sealed to the tank body 502, that is, the top cover 501 is sealed to the vacuum tank 5 on all sides and is provided with a sealing ring. The tank body 502 is set on the fixed frame 1. Furthermore, the top cover 501 is provided with filter cotton 504 at the opening, that is, one or more layers of filter cotton 504 are provided below the exhaust hole 503. The filter cotton 504 is used to filter air to prevent foreign particles and atomized resin from entering the exhaust pipe 6. The tank body 502 has a hole at the side to connect to the oil extraction pipe 4.

[0039] Furthermore, the vacuum tank 5, the glue spraying tank 10 and the collection tank 2 are all fixed on the horizontal frame of the fixed frame 1. The fixed frame 1 is of conventional structural design and will not be described in detail here. In addition, the one-way valve core 7 cooperates with the drain port 505 to open in one direction, and the resin freely falls downward from the drain port 505. Specifically, the one-way valve core 7 can be opened and dropped under the action of the gravity of the resin. When the vacuum pump 8 is started to evacuate the vacuum tank 5, the external atmospheric pressure pushes the one-way valve core 7 to move up and close. At this time, a negative pressure is formed in the vacuum tank 5, and the resin in the collection tank 2 can be lifted and extracted through the oil extraction pipe 4. When the one-way valve core 7 is closed, the vacuum pump 8 can remove the air from the vacuum tank 5, so that the vacuum pipe is in a negative pressure state, thereby pumping the resin in the collection tank 2 into the vacuum tank 5 through the oil extraction pipe 4; conversely, when the one-way valve core 7 is opened, the resin flows downward into the glue spraying tank 10 under the action of gravity.

[0040] The device operates as follows: First, a suitable amount of resin (the resin's form or material is not discussed here) is poured into the collection tank 2. The vacuum pump 8 is then activated and operated for a period of time. The vacuum pump 8 pumps the resin through the extraction pipe 4 into the vacuum tank 5. The resin then flows downward into the glue slurry tank 10, slowly pouring onto the winding or weaving junction. Any resin that has not adhered to the fibers continues to drip downward and returns to the collection tank 2. After a set period of time, just before the resin in the glue slurry tank 10 is almost exhausted, the vacuum pump 8 automatically starts and operates for a period of time again, pumping the resin from the collection tank 2 into the vacuum tank 5. This cycle repeats, achieving automatic glue slurrying. After a certain number of cycles, the worker can refill the collection tank 2 with an appropriate amount of resin. If the filter screen is prone to excessive impurities and fiber breakage, the filter can be replaced. This allows for repeated glue slurrying with only a small amount of resin, preventing fiber yarn defects. When the small amount of resin is almost exhausted, a new amount of resin is added, thus preventing the problem of excessive resin curing and thickening after prolonged use.

[0041] The assembly and matching relationship of the various components involved in the device of the present invention, the winding device or weaving device, the filter screen, the vacuum pump 8 and its control software, etc. are existing technologies or materials. The relevant technical personnel can directly purchase or customize them from the market according to the required product models and specifications.

[0042] The electrical components mentioned in this article are all connected to an external main controller and 220V mains electricity or industrial electricity, and the main controller can be a conventional known device such as a computer that plays a control role.

[0043] The above description is only a preferred specific embodiment of the present invention. Common knowledge such as the specific structure and characteristics of the scheme is not described in detail here. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above embodiment, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. Any person skilled in the art who is familiar with the technical field can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention within the technical scope disclosed by the present invention, and they should be covered by the scope of protection of the present invention.

Claims

1. A circulating glue spraying device, comprising a fixed frame (1), wherein a tube blank (13) formed by a winding device or a braiding device is provided in the middle of the fixed frame (1), characterized in that: A collecting tank (2) for collecting resin is provided below the tube blank (13). The collecting tank (2) is connected to a vacuum tank (5) suspended above the tube blank (13) through an oil extraction pipe (4). The top of the vacuum tank (5) is connected to a vacuum pump (8) through an air extraction pipe (6). A one-way valve core (7) is provided at the bottom of the vacuum tank (5) to allow the resin to be poured onto the winding point or the braiding junction of the tube blank (13).

2. A circulating glue spraying device according to claim 1, characterized in that: A glue pouring tank (10) for pouring resin onto the winding point or weaving junction point of the tube blank (13) is provided between the vacuum tank (5) and the tube blank (13).

3. A circulating glue spraying device according to claim 2, characterized in that: The vacuum tank (5) comprises a tank body (502) and a top cover (501). The top cover (501) has a hole for connecting to an air extraction pipe (6). A liquid discharge port (505) is provided at the bottom of the tank body (502). A one-way valve core (7) is disposed inside the liquid discharge port (505).

4. A circulating glue spraying device according to claim 3, characterized in that: The top cover (501) is sealed and connected to the tank body (502), and the tank body (502) is arranged on the fixing frame (1).

5. A circulating glue spraying device according to claim 4, characterized in that: The top cover (501) is provided with filter cotton (504) at the opening, and the tank body (502) is provided with a side opening for connecting with the oil extraction pipe (4).

6. A circulating glue spraying device according to claim 5, characterized in that: The glue pouring tank (10) is placed below the drain port (505), a glue pouring filter (9) is provided in the glue pouring tank (10), and a glue outlet is processed at the bottom of the glue pouring tank (10).

7. A circulating glue spraying device according to claim 6, characterized in that: The glue pouring tank (10) is installed on the fixed frame (1), and the glue outlet is placed just above the winding point or the braiding junction of the tube blank (13).

8. A circulating glue spraying device according to claim 7, characterized in that: The collecting tank (2) is provided with a collecting filter (3), and a drainage hole (201) is processed at the bottom of the collecting tank (2) to connect with the oil pumping pipe (4).

9. A circulating glue spraying device according to claim 8, characterized in that: The vacuum tank (5), glue spraying tank (10) and collecting tank (2) are all fixed on the horizontal frame of the fixed frame (1).

10. A circulating glue spraying device according to claim 9, characterized in that: The one-way valve core (7) cooperates with the liquid discharge port (505) to open in one direction, and the resin falls downward from the liquid discharge port (505).

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