Constant-pressure feeding device

Abstract

The utility model provides a constant-pressure feeding device, which is used for providing materials for a dispensing device and comprises a feeding pipeline and a discharging pipeline, the feeding pipeline comprises a feeding port, a discharging port and a temporary storage port, the feeding port, the discharging port and the temporary storage port are communicated with one another, and the discharging port is used for supplying the materials to the dispensing device; the temporary storage mechanism comprises a cavity, the cavity is used for containing materials, and the cavity communicates with the temporary storage opening; and the first air pressure mechanism is communicated with the cavity so as to control the pressure in the cavity. According to the constant-pressure feeding device disclosed by the utility model, materials can be continuously fed to the dispensing device.

Description

Technical Field

[0001] The utility model relates to the technical field of glue dispensing equipment, in particular to a constant pressure feeding device. Background Art

[0002] In the prior art, glue dispensing is required during the manufacturing process of equipment, especially in the manufacturing of 3C electronic products, where glue is dispensed at multiple locations on the product. During this process, the glue dispensing equipment must be supplied with materials. Before supplying the materials, they must be blended and mixed, and then supplied to the glue dispensing equipment. However, once a batch of materials is used up, glue dispensing must be stopped before replacing or adding new materials. This can affect the glue dispensing rate and even the quality. Therefore, a feeding device that can continuously supply materials to the glue dispensing mechanism is needed. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems in the prior art. To this end, the present invention provides a constant pressure feeding device that can continuously feed a dispensing device.

[0004] According to the constant pressure feeding device of the first aspect embodiment of the present utility model, it is used to provide materials for the dispensing device, including: a feeding pipe, the feeding pipe includes a feeding port, a discharging port and a buffer port, the feeding port, the discharging port and the buffer port are connected to each other, and the discharging port is used to supply materials to the dispensing device; a buffer mechanism, the buffer mechanism includes a cavity, the cavity is used to accommodate materials, and the cavity is connected to the buffer port; a first pneumatic mechanism, the first pneumatic mechanism is connected to the cavity to control the pressure in the cavity.

[0005] The constant pressure feeding device according to the first embodiment of the present invention has at least the following beneficial effects: when feeding the glue dispensing device, the feeding pipe not only feeds the glue dispensing device but also feeds the cavity. The speed and volume of the material entering the cavity are controlled by the first pneumatic mechanism. When the material is replaced, the feed port stops feeding the material and cannot output the material to the discharge port. At this time, the air pressure in the cavity is changed by the first pneumatic mechanism, so that the material in the cavity is supplied to the discharge port through the buffer port and feeds the glue dispensing device, so that the feeding of the glue dispensing device is uninterrupted.

[0006] According to some embodiments of the present invention, the constant pressure feeding device also includes a pressure stabilizer and a second pneumatic mechanism, the pressure stabilizer is connected to the discharge port, the pressure stabilizer is connected to the dispensing device and supplies material to the dispensing device, and the second pneumatic mechanism is connected to the pressure stabilizer and provides pressure to the pressure stabilizer to control the pressure of the material flowing to the dispensing device.

[0007] According to some embodiments of the present invention, the constant pressure feeding device also includes a one-way valve, which is arranged in the feed pipe, and the one-way valve is used to prevent the material from flowing out of the feed pipe from the feed port in the reverse direction, wherein the reverse direction is opposite to the direction of flow when the material is fed.

[0008] According to some embodiments of the present invention, the feed port and the discharge port are spaced apart in the vertical direction, the feed port faces upward in the vertical direction, and the discharge port faces downward in the vertical direction.

[0009] According to some embodiments of the present invention, the cache port is communicated with the bottom of the cavity, and the first air pressure mechanism is communicated with the top of the cavity.

[0010] According to some embodiments of the present invention, the cache mechanism further includes a material sensor, which is arranged inside the cavity to measure the capacity of the material in the cavity.

[0011] According to some embodiments of the present invention, the cache mechanism also includes an air pressure valve, which is arranged at the connection point between the first air pressure mechanism and the cavity. The air pressure valve includes an open state and a closed state. When the air pressure valve is in the open state, the first air pressure mechanism is connected to the cavity; when the air pressure valve is in the closed state, the first air pressure mechanism and the cavity are isolated from each other.

[0012] According to some embodiments of the present utility model, the material sensor includes an upper limit sensor and a lower limit sensor, the upper limit sensor is located above the lower limit sensor, the lower limit sensor sends a lower limit signal when no material is detected, and the upper limit sensor sends an upper limit signal when material is detected. When the material sensor sends a lower limit signal, the material is filled into the cavity, and when the material sensor sends an upper limit signal, the filling of the material into the cavity is stopped.

[0013] According to some embodiments of the present invention, the constant pressure feeding device also includes an air inlet pipe and an air circuit connector, the air inlet pipe includes an air source inlet and an air outlet, the air source inlet is used to connect with the air source, and the air circuit connector is installed at the air outlet, wherein the air circuit connector includes an air source inlet and two air source outlets, one of the air source outlets is connected to the first air pressure mechanism, and the other air source outlet is connected to the second air pressure mechanism, so that the air pressure received by the first air pressure mechanism and the second air pressure mechanism is the same.

[0014] According to some embodiments of the present invention, a device for providing materials to a dispensing device includes: a feed pipe, the feed pipe including a feed port and a cache port; a cache mechanism, the cache mechanism including a cavity, the cavity being used to accommodate materials, a first material port and a second material port being provided on the cavity, the first material port being connected to the cache port, and the second material port being used to supply materials to the dispensing device; and a first pneumatic mechanism, the first pneumatic mechanism being connected to the cavity to control the pressure in the cavity.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural diagram of the constant pressure feeding device, the mixing device and the dispensing device of the utility model;

[0017] Figure 2 This is a structural schematic diagram of an embodiment of the constant pressure feeding device of the present utility model;

[0018] Figure 3 This is a structural schematic diagram of another embodiment of the constant pressure feeding device of the present utility model.

[0019] Figure Number:

[0020] 1. Feed pipe; 11. Feed port; 12. Discharge port; 13. Buffer port; 14. One-way valve; 2. Buffer mechanism; 21. Cavity; 22. Air pressure valve; 3. Pressure stabilizing device; 31. First air pressure mechanism; 32. Second air pressure mechanism; 33. Air source inlet; 4. Pressure stabilizer; 5. Mixing device; 6. Glue dispensing device; 7. Constant pressure feeding device. DETAILED DESCRIPTION

[0021] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0022] In the description of the present invention, it should be understood that descriptions involving orientation, such as the orientation or positional relationship indicated by up, down, etc., are based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0023] In the description of this utility model, "a plurality" means more than two. The use of "first" or "second" is solely for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features indicated, or implicitly indicating the order of the technical features indicated.

[0024] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0025] Reference Figures 1 to 3 The constant pressure feeding device 7 in the first embodiment of the present invention is used to provide materials to the glue dispensing device 6, and includes: a feeding pipe 1, a buffer mechanism 2 and a first air pressure mechanism 31. The feeding pipe 1 includes a feeding port 11, a discharging port 12 and a buffer port 13. The feeding port 11, the discharging port 12 and the buffer port 13 are connected to each other. The discharging port 12 is used to feed materials to the glue dispensing device 6; the buffer mechanism 2 includes a cavity 21, the cavity 21 is used to accommodate materials, and the cavity 21 is connected to the buffer port 13; the first air pressure mechanism 31 is connected to the cavity 21 to control the pressure in the cavity. The mixed material enters through the feeding port 11 of the feeding pipe 1 and is discharged from the feeding pipe 1 through the discharging port 12 or the buffer port 13. Before the material enters the feeding pipe 1, it is necessary to mix the material and remove bubbles through the mixing device 5. It is understandable that the constant pressure feeding device 7 can be fed by one mixing device or multiple mixing devices. For example, when multiple mixing devices 5 are set to feed the constant pressure feeding device 7, after the material in one of the mixing devices 5 is used up, it can be switched to another mixing device 5. In the related art, switching the mixing device 5 will cause the feeding to be suspended, thereby suspending the dispensing of the product. In this solution, the material in the mixing device 5 can not only flow from the feed port 11 to the discharge port 12 to the dispensing device 6 for feeding, but also a part of the material enters the cavity 21 in the cache mechanism 2 through the buffer port 13 during feeding. And when switching the mixing device 5, the material is fed to the discharge port 12 through the buffer mechanism 2. And the feeding or discharging of the cavity 21 in the cache mechanism 2 is controlled by the first pneumatic mechanism 31.

[0026] After the material in the mixing device 5 enters from the feed port 11, the material has multiple flow modes. The first flow mode is that the material flows directly from the feed port 11 to the discharge port 12 without the need for the material to flow out from the buffer port 13. In order to achieve the first flow mode, the air pressure in the cavity 21 is controlled by the first pneumatic mechanism 31 so that the material does not pass through the buffer port 13, that is, the air pressure in the cavity 21 is equal to the pressure of the material at the feed port 11. The second flow mode is that after the material enters from the feed port 11, it flows out from the discharge port 12 and the buffer port 13 respectively. The material is not only supplied to the dispensing device 6 from the discharge port 12, but also a part of it enters the cavity 21 from the buffer port 13 and is stored. In order to achieve the second flow mode, the pressure in the cavity 21 can be reduced by the first pneumatic mechanism 31, so that a part of the material enters the cavity 21. The third flow mode is when no material is input into the feed port 11. The material in the cavity 21 flows through the buffer port 13 to the discharge port 12 and is fed to the dispensing device 6. To achieve this third flow mode, the first pneumatic mechanism 31 increases the pressure in the cavity 21, squeezing the material out while simultaneously blocking the feed port 11. This achieves the third flow mode.

[0027] For example, when a large amount of material enters from the feed port 11 , the second flow mode may be used to deliver some material into the cavity 21 while ensuring the supply of material to the dispensing device 6 .

[0028] After a certain amount of material is stored in the cavity 21, the second flow mode is stopped and switched to the first flow mode. The third flow mode is used when the material in the mixing device 5 is switched after the material in the mixing device 5 is used up or when new material is added.

[0029] Of course, it is also understandable that as long as the cavity 21 in the cache mechanism 2 caches a preset amount of material, the third flow mode can be adopted, that is, no material is fed into the feed port, and the material is only fed to the dispensing device 6 through the cache mechanism 2.

[0030] Through the mutual cooperation of the above structures, the material supply to the glue dispensing device 6 is uninterrupted, thereby improving the working efficiency of the glue dispensing device 6.

[0031] According to some embodiments of the present invention, referring to Figure 3The constant-pressure feeding device 7 also includes a pressure regulator 4 and a second pneumatic mechanism 32. The pressure regulator 4 is connected to the discharge port 12, which in turn is connected to the glue dispensing device 6 and supplies material to the device. The second pneumatic mechanism 32 is connected to the pressure regulator 4 and provides pressure to the pressure regulator 4 to control the pressure of the material flowing into the glue dispensing device 6. To ensure a more stable material supply to the glue dispensing device 6, the material, after being discharged from the discharge port 12, first passes through the pressure regulator 4 before being delivered to the glue dispensing device 6. The second pneumatic mechanism 32 provides a stable air pressure for the pressure regulator 4. Regardless of changes in the pressure of the material delivered from the discharge port 12, the pressure regulator 4 maintains a stable pressure of the material output from the pressure regulator 4 thanks to the stable air pressure input by the second pneumatic mechanism 32. In other words, the pressure of the material output from the pressure regulator 4 can be controlled by the air pressure input by the second pneumatic mechanism 32, thereby ensuring a constant flow and pressure of the material entering the glue dispensing device 6. For example, the glue dispensing device 6 may employ a pressure point valve.

[0032] The working principle of the pressure stabilizer 4 mainly relies on the principles of physics and engineering, and maintains a stable pressure of the output fluid by precisely controlling the flow rate and pressure of the gas. The principle mainly includes three parts.

[0033] The first part is the pressure balance system. The regulator 4 maintains a stable output pressure by establishing a pressure balance system. This is typically achieved through the use of devices such as springs, pistons, and diaphragms. When input gas enters the regulator, it exerts a certain pressure on these devices, balancing the existing initial pressure on the devices and thus maintaining a stable pressure at the output port. When the input pressure increases, these devices (such as springs or diaphragms) compress, increasing the pressure at the output port to achieve a new equilibrium. Conversely, when the input pressure decreases, the devices relax, reducing the pressure at the output port.

[0034] The second part involves valve adjustment. The regulator 4 is typically equipped with an adjustable valve, such as a butterfly valve, ball valve, or needle valve. By adjusting the valve opening, the gas flow rate can be controlled to maintain the desired output pressure. To increase fluid flow, the valve is gradually opened to increase the channel's cross-sectional area. Conversely, to decrease fluid flow, the valve is gradually closed to reduce the channel's cross-sectional area.

[0035] The third component is sensor feedback and feedback control. To achieve precise control of output pressure, the regulator 4 is typically equipped with one or more sensors (such as pressure sensors) to monitor the actual output pressure and provide feedback signals to the control system. The control system receives the sensor feedback signals and compares them with preset values. If the actual output pressure deviates from the preset value, the control system adjusts the valve opening accordingly to restore the output pressure to near the set value.

[0036] According to some embodiments of the present invention, the constant pressure feeding device 7 further includes a one-way valve 14, which is provided in the feed pipe 1. The one-way valve 14 is used to prevent the material from flowing out of the feed pipe 1 from the feed port 11 in the reverse direction, wherein the reverse direction is opposite to the direction in which the material flows during feeding. For example, please refer to Figure 2 Along the direction of material flow during feeding, a one-way valve 14 can be provided upstream of the feed port 11 to prevent the material from flowing back out of the feed pipe 1 from the feed port 11. By providing the one-way valve 14, the material can only flow from the feed port 11 to the buffer port 13 or the discharge port 12, while preventing the material in the feed pipe 1 from flowing back out of the feed pipe 1 through the feed port 11. In particular, when the material flows in the third flow mode, when the material in the cavity 21 is fed to the discharge port 12, the one-way valve 14 automatically closes, thereby preventing the material from being discharged from the feed pipe 1 in the reverse direction, allowing the material to be fed more smoothly from the cavity 21 to the dispensing device 6.

[0037] According to some embodiments of the present invention, the feed port 11 and the discharge port 12 are spaced apart in the vertical direction, with the feed port 11 facing upward and the discharge port 12 facing downward. When the material enters the feed port 11, the most important thing is to supply the material to the dispensing device 6 through the discharge port 12. When a large amount of material enters the feed port 11, the material that the dispensing device 6 does not have time to consume will enter the cavity 21 from the buffer port 13 for storage. Therefore, the feed port 11 and the discharge port 12 are set to be straight up and down, so that the material can flow more smoothly to the discharge port 12.

[0038] According to some embodiments of the present invention, the cache port 13 is connected to the bottom of the cavity 21, and the first pneumatic mechanism 31 is connected to the top of the cavity 21. The cache port 13 is connected to the bottom of the cavity 21, so that when the material is in the third flow mode, that is, when the material in the cavity 21 flows to the discharge port 12 to feed the dispensing device 6, the material in the cavity 21 can be used more thoroughly, thereby improving the utilization rate of the material in the cavity 21 and avoiding the residue of the material in the cavity 21. In addition, the material entering the cavity 21 from the bottom of the cavity 21 can also avoid the generation of bubbles in the material in the cavity 21. The first pneumatic mechanism 31 is connected to the top of the cavity 21, which not only prevents the material from entering the first pneumatic mechanism 31, but also prevents the gas generated by the first pneumatic mechanism 31 from remaining in the material.

[0039] According to some embodiments of the present invention, the cache mechanism 2 further includes a material sensor, which is disposed within the cavity 21 to measure the volume of the material within the cavity 21. Measuring the volume of the material within the cavity 21 by using the material sensor can prevent excess or insufficient material from being present in the cavity 21, and can also prevent air within the cavity 21 from being discharged into the dispensing device 6. Specifically, the material sensor can be configured as a plurality of horizontally disposed photoelectric sensors. It can also be configured as a vertically disposed distance measuring sensor. It can also be configured as a pressure sensor disposed at the inner bottom of the cavity 21.

[0040] According to some embodiments of the present invention, the buffer mechanism 2 further includes an air pressure valve 22, which is disposed at the connection between the first air pressure mechanism 31 and the cavity 21. The air pressure valve 22 includes an open state and a closed state. When the air pressure valve 22 is in the open state, the first air pressure mechanism 31 is in communication with the cavity 21; when the air pressure valve 22 is in the closed state, the first air pressure mechanism 31 and the cavity 21 are isolated from each other. When the material flow mode is the second flow mode or the third flow mode, the air pressure valve 22 can be opened to allow the material to enter and exit the cavity 21 according to the air pressure provided by the first air pressure mechanism 31. When the first flow mode is in effect, the air pressure valve 22 can be closed to prevent the material in the cavity 21 from entering or exiting. Specifically, the material sensor includes an upper limit sensor and a lower limit sensor. The lower limit sensor sends a lower limit signal when no material is detected, and the upper limit sensor sends an upper limit signal when material is detected. When the material sensor sends a lower limit signal, the material is filled into the cavity 21. When the material sensor sends an upper limit signal, the material is stopped from being filled into the cavity 21.

[0041] According to some embodiments of the present invention, the first pneumatic mechanism 31 and the second pneumatic mechanism 32 can be supplied with air by the same air source. Exemplarily, the constant pressure feeding device 7 also includes an air inlet pipe and an air circuit connector. The air inlet pipe includes an air source inlet 33 and an air outlet. The air source inlet 33 is used to communicate with the air source, and the air circuit connector is installed at the air outlet. The air circuit connector includes two air source outlets, one air source outlet is connected to the first pneumatic mechanism 31, and the other air source outlet is connected to the second pneumatic mechanism 32, so that the air pressure received by the first pneumatic mechanism 31 and the second pneumatic mechanism 32 is the same. A stable and consistent air pressure is provided to the first pneumatic mechanism 31 and the second pneumatic mechanism 32 at the same time through an air source inlet 33, so that the first pneumatic mechanism 31 and the second pneumatic mechanism 32 can more conveniently adjust the air pressure provided to the cavity 21 or the stabilizer. Specifically, the first pneumatic mechanism 31 and the second pneumatic mechanism 32 are both configured as proportional valves. The proportional valve can amplify or reduce the input air pressure proportionally.

[0042] According to some embodiments of the present invention, a constant pressure feeding device 7 for supplying material to a dispensing device 6 includes: a feed pipe 1, a buffer mechanism 2, and a first pneumatic mechanism 31. The feed pipe 1 includes a feed port 11 and a buffer port 13. The buffer mechanism 2 includes a cavity 21 for accommodating material. The cavity 21 is provided with a first material port and a second material port. The first material port is connected to the buffer port 13, and the second material port is used to supply material to the dispensing device 6. The first pneumatic mechanism 31 is connected to the cavity 21 to control the pressure within the cavity. In this embodiment, after the material flows from the feed port 11 to the buffer port 13, it completely enters the cavity 21. Some of the material remains in the cavity 21, while some of the material is supplied to the dispensing device 6 through the second material port. When the first material port stops supplying material to the cavity 21, the material stored in the cavity 21 can continue to be supplied to the dispensing device 6 through the second material port.

[0043] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A constant pressure feeding device for supplying materials to a dispensing device, characterized in that: include: A feed pipe, comprising a feed port, a discharge port, and a buffer port, wherein the feed port, the discharge port, and the buffer port are interconnected, and the discharge port is used to supply material to the dispensing device; A cache mechanism, the cache mechanism comprising a cavity, the cavity being used to accommodate materials, the cavity being in communication with the cache port; A first pneumatic mechanism is connected to the cavity to control the pressure in the cavity.

2. The constant pressure feeding device according to claim 1, characterized in that: The constant pressure feeding device also includes a pressure stabilizer and a second pneumatic mechanism, wherein the pressure stabilizer is connected to the discharge port, the pressure stabilizer is connected to the dispensing device and supplies material to the dispensing device, and the second pneumatic mechanism is connected to the pressure stabilizer and provides pressure to the pressure stabilizer to control the pressure of the material flowing to the dispensing device.

3. The constant pressure feeding device according to claim 1, characterized in that: The constant pressure feeding device also includes a one-way valve, which is arranged in the feed pipe and is used to prevent the material from flowing out of the feed pipe from the feed port in the reverse direction, wherein the reverse direction is opposite to the direction of flow when the material is fed.

4. The constant pressure feeding device according to claim 1, characterized in that: The feed port and the discharge port are spaced apart in the vertical direction, the feed port faces upward in the vertical direction, and the discharge port faces downward in the vertical direction.

5. The constant pressure feeding device according to claim 1, characterized in that: The cache port is communicated with the bottom of the cavity, and the first air pressure mechanism is communicated with the top of the cavity.

6. The constant pressure feeding device according to claim 1, characterized in that: The cache mechanism further includes a material sensor, which is arranged inside the cavity to measure the capacity of the material in the cavity.

7. The constant pressure feeding device according to claim 6, characterized in that: The cache mechanism also includes an air pressure valve, which is arranged at the connection point between the first air pressure mechanism and the cavity. The air pressure valve includes an open state and a closed state. When the air pressure valve is in the open state, the first air pressure mechanism is connected to the cavity; when the air pressure valve is in the closed state, the first air pressure mechanism and the cavity are isolated from each other.

8. The constant pressure feeding device according to claim 7, characterized in that: The material sensor includes an upper limit sensor and a lower limit sensor. The upper limit sensor is located above the lower limit sensor. When the lower limit sensor does not detect material, it sends a lower limit signal. When the upper limit sensor detects material, it sends an upper limit signal. When the material sensor sends the lower limit signal, the material is filled into the cavity. When the material sensor sends the upper limit signal, the material is stopped from being filled into the cavity.

9. The constant pressure feeding device according to claim 2, characterized in that: The constant pressure feeding device also includes an air inlet pipe and an air circuit connector, the air inlet pipe includes an air source inlet and an air outlet, the air source inlet is used to connect with the air source, and the air circuit connector is installed at the air outlet, wherein the air circuit connector includes an air source inlet and two air source outlets, one of the air source outlets is connected to the first air pressure mechanism, and the other air source outlet is connected to the second air pressure mechanism, so that the air pressure received by the first air pressure mechanism and the second air pressure mechanism is the same.

10. A constant pressure feeding device for supplying materials to a dispensing device, characterized in that: include: A feed pipe, comprising a feed port and a buffer port; A cache mechanism, the cache mechanism comprising a cavity, the cavity being used to hold material, the cavity being provided with a first material port and a second material port, the first material port being in communication with the cache port, and the second material port being used to supply material to the dispensing device; A first pneumatic mechanism is connected to the cavity to control the pressure in the cavity.

Images