dispensing equipment

Abstract

This invention relates to the technical field of glue filling in tubular structures, and discloses a glue filling device for filling a tube having a first end and a second end. The glue filling device includes: a glue filling assembly, comprising a cylindrical body connected to the first end and communicating with the inside of the tube; and a negative pressure assembly connected to the second end and communicating with an opening at the second end. The negative pressure assembly is adapted to create a negative pressure at the opening at the second end to draw out gas from inside the tube. The glue filling device of this invention has a simple structure and greatly improves the glue filling efficiency of tubular structures.

Description

Technical Field

[0001] This invention relates to the technical field of filling adhesive into pipe structures, and more specifically to an adhesive filling device. Background Technology

[0002] In some applications, it is necessary to fill the tubular structure with adhesive. For example, in sensor tubular structures, wires are arranged inside, and there is usually a gap between the wires and the inner wall of the tubular structure. This gap needs to be filled with adhesive. On the one hand, this can fix the wires and prevent them from being damaged by vibration during operation; on the other hand, it can increase the insulation between the wires and the bend in the tubing. In related technologies, adhesive is usually manually filled into the tubular structure using a syringe, which is inefficient. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the shortcomings of low efficiency of manual glue filling in tubular structures in related technologies, and to provide a glue filling device.

[0004] The present invention provides a glue-filling device for filling a tube with glue, the tube having a first end and a second end opposite to each other; the glue-filling device includes: a glue-filling assembly including a cylinder; the cylinder is connected to the first end and communicates with the inside of the tube; a negative pressure assembly is connected to the second end and communicates with an opening at the second end; the negative pressure assembly is adapted to form a negative pressure at the opening at the second end to draw out gas from the inside of the tube.

[0005] In one optional embodiment, the negative pressure assembly includes a first pressure block, in which an air intake channel, an air intake channel, and an exhaust channel are formed, and the air intake channel, the air intake channel, and the exhaust channel are interconnected; furthermore, the air intake channel and the exhaust channel are connected to the outside of the first pressure block, and the air intake channel is adapted to connect to an opening at a second end.

[0006] In one alternative embodiment, a nozzle is provided in the air intake channel, and the diameter of the nozzle is reduced at the end closest to the air intake channel.

[0007] In one alternative embodiment, the exhaust passage is connected to the outside of the first pressure block to form an exhaust port on the first pressure block; the exhaust passage is provided with a guide groove that extends toward the exhaust port.

[0008] In one alternative embodiment, the negative pressure assembly further includes a sealing gasket with perforations, the sealing gasket being connected to one end of the air intake channel that communicates with the opening at the second end.

[0009] In one optional embodiment, the negative pressure assembly further includes a second pressure block and a connecting structure, wherein the first pressure block and the second pressure block are detachably connected by the connecting structure; the first pressure block is provided with a first clamping part, and the second pressure block is provided with a second clamping part; when the first pressure block and the second pressure block are connected, the first clamping part and the second clamping part are arranged opposite to each other.

[0010] In one optional embodiment, the connection structure includes at least two connection holes and a fastener, wherein the at least two connection holes are respectively disposed on the first pressure block and the second pressure block, and the fastener is threadedly connected between the connection holes of the first pressure block and the second pressure block.

[0011] In one alternative embodiment, the glue-filling assembly further includes an air inlet pipe, one end of which is connected to the negative pressure assembly and the other end of which is connected to the cylinder body; the air inlet pipe is adapted to introduce gas from the negative pressure assembly into the cylinder body.

[0012] In one optional embodiment, the negative pressure assembly includes a first pressure block, in which an air inlet channel, an air duct channel, and an exhaust channel are formed, and the air inlet channel, the air duct channel, and the exhaust channel are interconnected; one end of the air duct is connected to the first pressure block and is connected to the exhaust channel, and the other end is located at the top of the cylinder.

[0013] In one alternative embodiment, the glue-filling assembly further includes a regulating valve disposed on the air inlet tube, the regulating valve being adapted to regulate the opening degree of the air inlet tube.

[0014] The technical solution of the present invention has at least the following advantages:

[0015] 1. The glue is poured into the first end of the tube using the cylinder, and a negative pressure component is used to create a negative pressure at the second end of the tube to draw out the gas inside the tube, thereby creating a negative pressure inside the tube. This accelerates the flow rate of the glue inside the tube, allowing the glue to quickly fill the tube and complete the glue pouring, which greatly improves the glue pouring efficiency. Furthermore, under the action of negative pressure, the filling effect of the glue in the tube is better.

[0016] 2. An air intake channel, an air duct channel, and an exhaust channel are formed within the first pressure block. High-speed airflow is introduced through the intake channel and discharged through the exhaust channel. Under the ejection effect of the high-speed airflow, a negative pressure is formed at the connection point between the first pressure block and the opening at the second end of the tube—specifically, at the junction of the intake channel, air duct channel, and exhaust channel. This draws gas out of the tube through the air duct channel, and the gas also flows out through the exhaust channel, thereby driving the adhesive to flow from the first end to the second end of the tube. This negative pressure assembly has a simple structure, is easy to manufacture, and can be adapted to smaller tube structures.

[0017] 3. A nozzle is installed in the air intake channel. When compressed air or other gases flow through the nozzle, the flow velocity increases, forming a high-speed airflow, thereby ensuring the ejection effect.

[0018] 4. Setting a guide channel in the exhaust channel can quickly guide the airflow to facilitate its smooth discharge.

[0019] 5. A sealing gasket is installed at the end of the air intake channel to seal the end of the air intake channel and the opening at the second end of the tube, so as to ensure the air intake effect and avoid air leakage.

[0020] 6. By setting the first pressure block, the second pressure block and the connecting structure, the second end of the pipe can be clamped and fixed between the first pressure block and the second pressure block to realize the connection between the negative pressure component and the second end of the pipe. It is easy to assemble and disassemble, and the pipe has high stability and is not easy to detach.

[0021] 7. An air intake pipe and a regulating valve are installed. The air intake pipe introduces gas into the cylinder, thereby pressurizing the first end of the pipe and further increasing the flow rate of the adhesive. The regulating valve adjusts the opening of the air intake pipe, thus regulating the gas pressure. Furthermore, one end of the air intake pipe is connected to the exhaust channel, allowing for the secondary use of the gas in the exhaust channel, improving economic efficiency. Attached Figure Description

[0022] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the potting process for tubular structures in the prior art;

[0024] Figure 2 This is a schematic diagram of the structure of a glue-dispensing device according to an embodiment of the present invention;

[0025] Figure 3 for Figure 2 Sectional view along the middle AA direction;

[0026] Figure 4 for Figure 3 Sectional view along the BB direction;

[0027] Figure 5 This is a schematic diagram of the structure of a first pressing block according to an embodiment of the present invention;

[0028] Figure 6 This is a cross-sectional view of a first pressing block according to an embodiment of the present invention;

[0029] Figure 7 This is a schematic diagram of the structure of a second pressing block according to an embodiment of the present invention;

[0030] Figure 8 This is a schematic diagram of the structure of a sealing gasket according to an embodiment of the present invention.

[0031] Explanation of reference numerals in the attached figures:

[0032] 10-Bend; 11-First end; 12-Second end; 13-Connecting pipe seat; 14-Vent hole;

[0033] 20 - Conductor;

[0034] 30-Glue dispensing device; 31-Glue dispensing assembly; 311-Cylinder; 312-Air inlet pipe; 313-Regulating valve; 32-Negative pressure assembly; 321-First pressure block; 3211-Air inlet channel; 3211a-Air inlet; 3212-Air duct; 3212a-First air inlet; 3213-Exhaust channel; 3213a-Exhaust port; 3214-Nozzle; 3215-Guide groove; 3216-First clamping part; 3217-Second air inlet; 322-Sealing gasket; 3221-Perforation; 323-Second pressure block; 3231-Second clamping part; 324-Connecting structure; 3241-Connecting hole; 3242-Fastener;

[0035] 40 - Syringe;

[0036] X - First direction; Y - Second direction. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] In some applications, it is necessary to fill the tubular structure with adhesive. For example, in sensor tubular structures, wires are arranged inside, and there is usually a gap between the wires and the inner wall of the tubular structure. This gap needs to be filled with adhesive. On the one hand, this can fix the wires and prevent them from being damaged by vibration during operation; on the other hand, it can increase the insulation between the wires and the bend in the tubing. In related technologies, a syringe is usually used to fill the tubular structure with adhesive, but the adhesive filling efficiency is relatively low.

[0039] Taking the tube-like structure of a sensor as an example, such as Figure 1 As shown, the sensor's tubular structure is typically a bent tube 10, with a wire 20 threaded inside. The bent tube 10 has a first end 11 and a second end 12. The first end 11 of the bent tube 10 has a connector 13 communicating with the interior, and the second end 12 of the bent tube 10 has a vent 14 communicating with the interior. During glue application, the sensor is placed on a workbench, and glue is injected into the connector 13 using a syringe 40 until glue emerges from the vent 14, at which point the glue application is stopped. Because the gap between the wire 20 and the bent tube 10 is small, and the glue has poor flowability and the cavity of the connector 13 is very small, multiple applications of glue are often required to complete the process, which takes about an hour and results in extremely low glue application efficiency.

[0040] To address the technical problem of low efficiency in manual glue filling of tubular structures in related technologies, this invention provides a glue filling device that enables rapid glue filling of tubular structures.

[0041] The following is combined Figures 2 to 8 The following describes embodiments of the present invention.

[0042] According to an embodiment of the present invention, a dispensing device 30 is provided for dispensing adhesive into a tube. It should be noted that the tube can be a similar... Figure 1 The bent pipe 10 can also be a straight pipe; components such as wires 20 can be threaded inside the pipe, or it can be hollow, as long as it can be glued using the glue-filling device 30 of the present invention. The pipe has a first end and a second end, such as the first end 11 and the second end 12 of the bent pipe 10 described above.

[0043] Specifically, such as Figure 2-4 As shown, the dispensing device 30 includes a dispensing assembly 31 and a negative pressure assembly 32. The dispensing assembly 31 includes a cylinder 311 connected to a first end 11 and communicating with the inside of a pipe. During dispensing, adhesive is placed inside the cylinder 311 and flows into the pipe through the first end 11. The negative pressure assembly 32 is connected to a second end 12 and communicates with the opening of the second end 12. The negative pressure assembly 32 is adapted to create a negative pressure at the opening of the second end 12 to draw out gas from the pipe.

[0044] In the technical solution of the present invention, the glue-filling device 30 uses the cylinder 311 to fill the first end 11 of the tube with glue, and uses the negative pressure component 32 to form a negative pressure at the opening of the second end 12 of the tube to draw out the gas in the tube, thereby forming a negative pressure in the tube, which accelerates the flow speed of the glue in the tube, so that the glue can quickly fill the tube and complete the glue-filling, greatly improving the glue-filling efficiency; and under the action of negative pressure, the filling effect of glue filling in the tube is better.

[0045] In some embodiments, the top and bottom of the cylinder 311 are both open. The bottom of the cylinder 311 is connected to the first end 11 of the tube, and the bottom opening of the cylinder 311 is aligned with the inner cavity of the tube. The top opening of the cylinder 311 is used to add adhesive. Exemplarily, the first end 11 of the tube is connected to the aforementioned connector 13, and correspondingly, the bottom of the cylinder 311 can be detachably connected to the connector 13. Exemplarily, the bottom of the cylinder 311 is directly bolted to the connector 13, or the bottom of the cylinder 311 is provided with a connecting flange, which is bolted to the connector 13. Exemplarily, the cylinder 311 can be constructed as a cylinder, a square cylinder, a flat cylinder, etc., as long as it can fulfill the function of loading adhesive and filling the tube with adhesive.

[0046] Furthermore, in some embodiments, such as Figure 4-6 As shown, the negative pressure assembly 32 includes a first pressure block 321. An air intake channel 3211, a ducting air channel 3212, and an exhaust channel 3213 are formed within the first pressure block 321. These three channels are interconnected. Furthermore, the air intake channel 3211 and the exhaust channel 3213 are connected to the outside of the first pressure block 321. The ducting air channel 3212 is adapted to connect to the opening of the second end 12. The air intake channel 3211 is connected to the outside of the first pressure block 321, and an air inlet 3211a is formed on the first pressure block 321. Compressed air and other airflow can enter the air intake channel 3211 through the air inlet 3211a. The exhaust channel 3213 is connected to the outside of the first pressure block 321, and an exhaust port 3213a is formed on the first pressure block 321. Gas within the first pressure block 321 can flow into the exhaust channel 3213 and be discharged through the exhaust port 3213a.

[0047] In this embodiment, an air intake channel 3211, an air duct 3212, and an exhaust channel 3213 are formed within the first pressure block 321. High-speed airflow is introduced through the air intake channel 3211 and discharged through the exhaust channel 3213. Under the ejection effect of the high-speed airflow, a negative pressure is formed at the connection point between the first pressure block 321 and the opening at the second end 12 of the pipe, specifically at the connection point of the air intake channel 3211, the air duct 3212, and the exhaust channel 3213. This draws gas out of the pipe through the air duct 3212, and the gas also flows out through the exhaust channel 3213, thereby driving the adhesive to flow from the first end 11 to the second end 12 of the pipe. This negative pressure component 32 has a simple structure, is easy to manufacture, and can be adapted to smaller pipe structures.

[0048] More specifically, such as Figure 4-6 As shown, the intake channel 3211 and the exhaust channel 3213 are sequentially connected in the first direction X of the first pressure block 321. Preferably, both the intake channel 3211 and the exhaust channel 3213 are constructed as cylindrical channels, and their center lines are on the same straight line. The intake port 3211a and the exhaust port 3213a are respectively formed on opposite sides of the first pressure block 321 in the first direction X. The bleed air channel 3212 extends along the second direction Y, which is at an angle to the first direction X. The first end 11 of the bleed air channel 3212 is connected to the junction of the intake channel 3211 and the exhaust channel 3213, and the second end 12 of the bleed air channel 3212 is connected to the outside of the first pressure block 321, forming a first bleed air port 3212a on the first pressure block 321. Preferably, the angle between the second direction Y and the first direction X is 90°, that is, the second direction Y and the first direction X are perpendicular to each other.

[0049] For example, the aforementioned air intake channel 3211 and air duct 3212 are located at the top of the first pressure block 321. The air duct 3212 extends from the top to the bottom of the first pressure block 321, and forms the aforementioned first air duct 3212a at the bottom of the first pressure block 321. It should be noted that the top of the first pressure block 321 refers to the upper structure of the first pressure block 321 in the second direction Y, and the bottom of the first pressure block 321 refers to the lower structure of the first pressure block 321 in the second direction Y.

[0050] For example, the above-mentioned intake channel 3211, bleed channel 3212 and exhaust channel 3213 are integrally formed on the first pressure block 321. Specifically, the three are formed on the first pressure block 321 by drilling. The structure is simple and easy to manufacture.

[0051] In some embodiments, such as Figure 4 As shown, a nozzle 3214 is provided within the aforementioned air intake channel 3211, with the nozzle 3214 having a smaller diameter at the end near the air intake channel 3212. Specifically, the nozzle 3214 includes a large-diameter section and a small-diameter section connected in sequence. The large-diameter section is positioned near the air intake port 3211a, while the small-diameter section is positioned away from the air intake port 3211a, i.e., near the air intake channel 3212. Exemplarily, the nozzle 3214 is fixedly connected to the inner wall of the air intake channel 3211, or the nozzle 3214 and the air intake channel 3211 are integrally formed. By providing the nozzle 3214 within the air intake channel 3211, compressed air and other gases can increase their flow velocity after passing through the nozzle 3214, forming a high-speed airflow, thereby ensuring the ejection effect.

[0052] In some embodiments, the exhaust channel 3213 communicates with the outside of the first pressure block 321 and forms an exhaust port 3213a on the first pressure block 321; furthermore, a guide groove 3215 is provided in the exhaust channel 3213, extending toward the exhaust port 3213a. The guide groove 3215 provided in the exhaust channel 3213 can quickly guide the airflow to facilitate the smooth discharge of the airflow.

[0053] Exemplarily, the exhaust channel 3213 extends along the first direction X, the exhaust port 3213a is located on one side of the first pressure block 321 along the first direction X, and the guide groove 3215 extends toward the exhaust port 3213a, that is, the guide groove 3215 extends along the first direction X. Exemplarily, multiple guide grooves 3215 are provided, and the multiple guide grooves 3215 are spaced apart on the inner wall of the exhaust channel 3213, preferably spaced apart. Exemplarily, the guide grooves 3215 can be milled directly on the inner wall of the exhaust channel 3213 by milling; or, exemplarily, the negative pressure component 32 can include a guide member, the guide grooves 3215 are provided on the guide member, and the guide member is fixedly connected or detachably connected to the exhaust channel 3213.

[0054] Furthermore, in some embodiments, the negative pressure assembly 32 further includes a sealing gasket 322, which has a perforation 3221 and is connected to one end of the air intake channel 3212 that communicates with the opening of the second end 12. By providing the sealing gasket 322 at the end of the air intake channel 3212, the end of the air intake channel 3212 and the opening of the second end 12 can be sealed to ensure the air intake effect and prevent air leakage. It should be noted that the end of the air intake channel 3212 refers to the aforementioned first air intake port 3212a.

[0055] For example, in the above-described bend 10 structure, the second end 12 of the tube is provided with a vent 14, which is specifically located on the side wall of the second end 12 of the tube, forming an opening at the second end 12 of the tube. Correspondingly, the air intake channel 3212 of the glue-filling device 30 communicates with the inside of the tube through the first air intake port 3212a and the vent 14. For example, the sealing gasket 322 is constructed with an arc-shaped structure to match the side wall of the tube and improve the sealing performance.

[0056] For example, such as Figure 8 As shown, the sealing gasket 322 is provided with a perforation 3221 through which gas can flow. The sealing gasket 322 is connected to the first air inlet 3212a of the first pressure block 321, and the perforation 3221 is arranged opposite to the first air inlet 3212a.

[0057] For example, in some embodiments not shown in the figures, the sealing gasket 322 is provided with a plurality of perforations 3221 through which gas can flow, the sealing gasket 322 is connected to the first air inlet 3212a of the first pressure block 321, and the plurality of perforations 3221 are all disposed opposite to the first air inlet 3212a.

[0058] For example, the sealing gasket 322 is adhered to the bottom of the first pressure block 321, and the one or more perforations 3221 are positioned opposite to the first air vent 3212a. Alternatively, the sealing gasket 322 and the first pressure block 321 are separate components, and in use, the sealing gasket 322 is clamped and fixed between the first pressure block 321 and the second pressure block 323 by a connecting structure 324. For example, the sealing gasket 322 can be a rubber gasket or other sealing structure.

[0059] Furthermore, in some embodiments, the negative pressure assembly 32 further includes the aforementioned second pressure block 323 and connecting structure 324, wherein the first pressure block 321 and the second pressure block 323 are detachably connected via the connecting structure 324.

[0060] Specifically, the first pressure block 321 is provided with a first clamping part 3216, and the second pressure block 323 is provided with a second clamping part 3231; when the first pressure block 321 and the second pressure block 323 are connected, the first clamping part 3216 and the second clamping part 3231 are arranged opposite to each other. The tube can be clamped and fixed between the first pressure block 321 and the second pressure block 323 by the first clamping part 3216 and the second clamping part 3231. In some embodiments, the sealing gasket 322 and the first pressure block 321 are separately provided. When the tube is clamped and fixed between the first pressure block 321 and the second pressure block 323, the sealing gasket 322 can be clamped and fixed between the first air inlet 3212a of the first pressure block 321 and the air vent 14 of the tube.

[0061] For example, the first clamping part 3216 is recessed at the bottom of the first pressure block 321 and is constructed as an arc-shaped groove; the second clamping part 3231 is recessed at the top of the second pressure block 323 and is constructed as an arc-shaped groove. For example, the sealing gasket 322 is connected to the first clamping part 3216 of the first pressure block 321, and the sealing gasket 322 is constructed as an arc-shaped plate.

[0062] Furthermore, the first air inlet 3212a is formed inside the first clamping part 3216. When the tube is clamped and fixed between the first clamping part 3216 and the second clamping part 3231, the first air inlet 3212a is directly opposite to the opening of the second end 12 of the tube, specifically, the first air inlet 3212a is directly opposite to the vent hole 14.

[0063] The glue-drinking device 30 configured in this way clamps and fixes the second end 12 of the tube between the first pressure block 321 and the second pressure block 323 through the connecting structure 324, so as to realize the connection between the negative pressure component 32 and the second end 12 of the tube; and the tube has high stability and is not easy to move or detach from the negative pressure component 32, thereby ensuring that the first air inlet 3212a is always connected to the inside of the tube during the glue-drinking process, thus ensuring the air inlet effect.

[0064] Specifically, in some embodiments, the connecting structure 324 includes at least two connecting holes 3241 and fasteners 3242. The at least two connecting holes 3241 are respectively disposed on the first pressure block 321 and the second pressure block 323, and the fasteners 3242 are threadedly connected between the connecting holes 3241 of the first pressure block 321 and the second pressure block 323. Exemplarily, the two connecting holes 3241 are a first connecting hole and a second connecting hole. The first connecting hole is a blind hole or through hole formed on the first pressure block 321, and has an internal thread. The second connecting hole is a through hole formed on the second pressure block 323, and has an internal thread. The second connecting hole corresponds to the first connecting hole, and the fastener 3242 is a bolt, threadedly connected to the first connecting hole and the second connecting hole. Exemplarily, four pairs of first and second connecting holes are provided, and four fasteners 3242 are correspondingly provided. The four first connecting holes are respectively located at the four corners of the first pressure block 321, and the four second connecting holes are respectively located at the four corners of the second pressure block 323. This connection structure 324 is simple in structure and easy to assemble and disassemble, facilitating the removal, installation, and adjustment of the pipe's position.

[0065] Specifically, in some embodiments not shown, the connecting structure 324 includes a snap fastener and a locking pin, which are respectively disposed on the first pressure block 321 and the second pressure block 323. When the snap fastener and the locking pin are engaged with each other, they connect the first pressure block 321 and the second pressure block 323, so that the tube can be clamped and fixed between the first clamping part 3216 and the second clamping part 3231.

[0066] The present invention does not impose specific limitations on the construction of the connection structure 324, as long as it can realize the function of connecting the first pressure block 321 and the second pressure block 323 to clamp and fix the tube between the two.

[0067] Furthermore, in some embodiments, the above-mentioned glue-filling assembly 31 further includes an air intake pipe 312, one end of which is connected to the negative pressure assembly 32, and the other end is connected to the cylinder 311; the air intake pipe 312 is adapted to introduce gas from the negative pressure assembly 32 into the cylinder 311. The purpose of providing the air intake pipe 312 is to input gas into the cylinder 311 to pressurize the first end 11 of the pipe, further increase the flow rate of the glue, and improve the glue-filling efficiency.

[0068] Specifically, one end of the air intake pipe 312 is connected to the first pressure block 321 and communicates with the exhaust channel 3213, while the other end extends to the top of the cylinder 311 to reuse the gas in the exhaust channel 3213 and improve economy.

[0069] Exemplarily, a second air inlet 3217 is provided on the top of the first pressure block 321. The second air inlet 3217 is correspondingly provided and connected to the exhaust channel 3213. One end of the air inlet pipe 312 is connected to the second air inlet 3217, and the other end of the air inlet pipe 312 extends into the top of the cylinder 311 through the top opening. Exemplarily, the air inlet pipe 312 is inserted into the second air inlet 3217, or a connector is provided in the second air inlet 3217, and the air inlet pipe 312 is connected to the connector. Exemplarily, the air inlet pipe 312 can be a flexible pipe to facilitate adjustment of its position according to the shape of the pipe.

[0070] For example, the glue-filling assembly 31 may also include a fixing frame, with a fixing member connected to the cylinder 311, and the second end 12 of the air inlet tube 312 supported on the fixing frame.

[0071] Furthermore, in some embodiments, the dispensing assembly 31 further includes a regulating valve 313, which is disposed on the air inlet pipe 312 and is adapted to regulate the opening degree of the air inlet pipe 312. The regulating valve 313 can regulate the opening degree of the air inlet pipe 312, thereby adjusting the air pressure and thus adaptively adjusting the dispensing speed. Exemplarily, the regulating valve 313 can be a manual regulating valve 313 or an electric regulating valve 313. This application does not specifically limit it, as long as it can achieve the function of regulating air pressure.

[0072] The glue-dispensing device 30 of the present invention has been proven through testing to significantly improve the glue-dispensing efficiency of tubular structures.

[0073] In summary, the dispensing device 30 of the present invention has a simple structure, low manufacturing cost, and can significantly improve the dispensing efficiency of tubular structures, thereby improving the production efficiency of products such as sensors. It has a wide range of application prospects and a significant competitive advantage.

[0074] Although embodiments of the invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A dispensing apparatus for dispensing adhesive into a tube having opposing first end (11) and second end (12), characterized in that, include: The glue-pouring assembly (31) includes a cylinder (311); the cylinder (311) is connected to the first end (11) and communicates with the inside of the tube; A negative pressure assembly (32) is connected to the second end (12) and communicates with the opening of the second end (12); the negative pressure assembly (32) is adapted to create a negative pressure at the opening of the second end (12) to draw out the gas in the pipe; The negative pressure assembly (32) includes a first pressure block (321), in which an air intake channel (3211), an air intake channel (3212), and an exhaust channel (3213) are formed. The air intake channel (3211), the air intake channel (3212), and the exhaust channel (3213) are interconnected. Furthermore, the air intake channel (3211) and the exhaust channel (3213) are connected to the outside of the first pressure block (321), and the air intake channel (3212) is adapted to communicate with the opening of the second end (12). The negative pressure assembly (32) further includes a second pressure block (323) and a connecting structure (324). The first pressure block (321) and the second pressure block (323) are detachably connected through the connecting structure (324). The first pressure block (321) is provided with a first clamping part (3216), and the second pressure block (323) is provided with a second clamping part (3231). When the first pressure block (321) and the second pressure block (323) are connected, the first clamping part (3216) and the second clamping part (3231) are arranged opposite to each other. The second end (12) is clamped and fixed between the first pressure block (321) and the second pressure block (323).

2. The dispensing device according to claim 1, characterized in that, The air intake channel (3211) is provided with a nozzle (3214), and the diameter of the nozzle (3214) near the air intake channel (3212) is reduced.

3. The dispensing device according to claim 1, characterized in that, The exhaust passage (3213) is connected to the outside of the first pressure block (321) to form an exhaust port (3213a) on the first pressure block (321). The exhaust channel (3213) is provided with a guide groove (3215), which extends toward the exhaust port (3213a).

4. The dispensing device according to claim 1, characterized in that, The negative pressure assembly (32) also includes a sealing gasket (322), which has a perforation (3221) and is connected to one end of the air intake channel (3212) that communicates with the opening of the second end (12).

5. The dispensing device according to claim 1, characterized in that, The connection structure (324) includes at least two connection holes (3241) and a fastener (3242). The at least two connection holes (3241) are respectively disposed on the first pressure block (321) and the second pressure block (323). The fastener (3242) is threadedly connected between the connection holes (3241) of the first pressure block (321) and the second pressure block (323).

6. The dispensing apparatus according to any one of claims 1-5, characterized in that, The glue-filling assembly (31) also includes an air inlet pipe (312), one end of which is connected to the negative pressure assembly (32) and the other end is connected to the cylinder (311); the air inlet pipe (312) is adapted to introduce the gas in the negative pressure assembly (32) into the cylinder (311).

7. The dispensing apparatus according to claim 6, characterized in that, The negative pressure assembly (32) includes a first pressure block (321), in which an air intake channel (3211), an air intake channel (3212), and an exhaust channel (3213) are formed, and the air intake channel (3211), the air intake channel (3212), and the exhaust channel (3213) are interconnected. One end of the air intake pipe (312) is connected to the first pressure block (321) and communicates with the exhaust channel (3213), while the other end is located at the top of the cylinder (311).

8. The dispensing apparatus according to claim 7, characterized in that, The glue-filling assembly (31) also includes a regulating valve (313), which is disposed on the air inlet pipe (312) and is adapted to adjust the opening of the air inlet pipe (312).

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