Glue solution circulating system and gluing equipment

Abstract

The invention discloses a glue solution circulating system and gluing device.The gluing device comprises a gluing mechanism with a gluing cavity and a glue solution collecting box capable of receiving glue solution dripping from the gluing mechanism, and the glue solution circulating system comprises a glue storage container with a glue storage cavity and a recycling container with a recycling cavity; wherein a gluing cavity of the gluing mechanism is communicated with a glue storage cavity of a glue storage container, and a collecting box is communicated with a recycling cavity of a recycling container, so that online recycling and reutilization of a glue solution can be realized, and the glue solution is prevented from dropping onto a machine table of gluing equipment in the gluing process of the gluing mechanism, polluting the machine table and wasting the glue solution; the recovered glue solution is reused, so that the utilization rate of the glue solution is improved, and the production and gluing cost is reduced; and the recovery and reutilization of the glue solution are finished on line in real time, and off-line operation is not needed, so that the production efficiency is improved.

Description

Technical Field

[0001] The invention relates to a glue liquid circulation system and glue coating equipment. Background Art

[0002] The production process of some products involves the process of applying glue on the products. For example, in the process of preparing grid lines on the cell by electroplating, it is necessary to apply glue on the side of the cell in advance to form a protective layer to protect the side of the cell from being electroplated. In the field of photovoltaic heterojunction cell copper process manufacturing equipment, it is necessary to evenly apply glue on the edge of the cell. The process of applying glue will cause a lot of waste. In order to save costs, it is necessary to recycle this part of the glue and reuse it after ensuring that the viscosity and performance meet the use requirements. However, the glue has a certain viscosity and is very easy to solidify, causing the entire pipeline system to be blocked and fail. Summary of the invention

[0003] The purpose of the invention is to provide a new glue circulation system.

[0004] To achieve the above-mentioned purpose, the technical solution adopted in the embodiment of the present invention is: a glue circulation system for a glue coating device, wherein the glue coating device comprises a glue coating mechanism for coating glue on a product to be processed, and a collection box capable of receiving glue dripping from the glue coating mechanism, wherein the glue coating mechanism has a glue coating cavity, and the glue circulation system comprises:

[0005] A glue storage container having a glue storage cavity;

[0006] a recovery container having a recovery chamber;

[0007] A glue inlet pipeline, the glue inlet pipeline connecting the glue storage chamber and the glue coating chamber;

[0008] A recovery pipe, the recovery pipe connecting the collection box and the recovery chamber;

[0009] A glue supply pipeline, wherein the glue supply pipeline is connected with the recovery chamber and the glue storage chamber;

[0010] A first valve, wherein the first valve is disposed on the glue supply pipeline, wherein the recovery chamber and the glue storage chamber are connected to each other when the first valve is in an open state, and the recovery chamber and the glue storage chamber are not connected to each other when the first valve is in a closed state;

[0011] The second valve is arranged on the recovery pipe, when the second valve is in an open state, the recovery chamber and the collection box are connected to each other, and when the second valve is in a closed state, the recovery chamber and the collection box are not connected to each other.

[0012] In some embodiments, the first valve is a first air-controlled valve, the glue liquid circulation system further comprises a first air supply pipeline and a first control valve, the first air supply pipeline is connected to the first air-controlled valve and is used to introduce a gas medium into the first air-controlled valve, the first control valve is arranged on the first air supply pipeline and is used to control the opening and closing of the first air supply pipeline; and / or,

[0013] The second valve is a second air-controlled valve, and the glue liquid circulation system also includes a second air supply pipeline and a second control valve. The second air supply pipeline is connected to the second air-controlled valve and is used to introduce gas medium into the second air-controlled valve. The second control valve is arranged on the second air supply pipeline and is used to control the opening and closing of the second air supply pipeline.

[0014] In some embodiments, the first control valve and the second control valve are both solenoid valves, the solenoid valves have an air inlet and an air outlet, and the solenoid valves also have a switchable first position and a second position. When the solenoid valve is in the first position, the air inlet is connected to the air outlet; when the solenoid valve is in the second position, the air inlet and the air outlet are not connected to each other.

[0015] In some embodiments, the glue circulation system has a first working state and a second working state. When the glue circulation system is in the first working state, the first valve is in a closed state and the second valve is in an open state, and a first medium passage for applying glue and recovering glue is formed between the glue storage chamber, the glue inlet pipe, the glue coating chamber, the collecting box, the recovery pipe and the recovery chamber; when the glue circulation system is in the second working state, the first valve is in an open state and the second valve is in a closed state, and a second medium passage for replenishing glue to the glue storage chamber is formed between the recovery chamber, the glue replenishment pipe and the glue storage chamber.

[0016] In some embodiments, the glue circulation system has a third working state and a fourth working state. When the glue circulation system is in the third working state, the first valve and the second valve are both in an open state, and a first medium passage for applying glue and recovering glue is formed between the glue storage chamber, the glue inlet pipe, the glue coating chamber, the collecting box, the recovery pipe and the recovery chamber, and a second medium passage for replenishing glue to the glue storage chamber is formed between the recovery chamber, the glue replenishment pipe and the glue storage chamber; when the glue circulation system is in the fourth working state, the first valve and the second valve are both in a closed state, and the first medium channel and the second medium channel are both blocked.

[0017] In some embodiments, the glue circulation system further includes a first liquid level sensor for detecting the liquid level in the glue storage chamber, and the first liquid level sensor is communicatively connected with the first valve and the second valve.

[0018] In some embodiments, the glue liquid circulation system also includes a feeding device for replenishing glue liquid or diluent into the recovery chamber and a glue liquid state detection element, the glue liquid state detection element is communicatively connected with the feeding device, and the glue liquid state detection element includes at least one of a second liquid level sensor for detecting the liquid level in the recovery chamber, a viscosity sensor for detecting the viscosity of the glue liquid in the recovery chamber, and a weight sensor for detecting the weight of the liquid in the recovery chamber.

[0019] In some embodiments, the glue circulation system further includes a stirring device for stirring the medium in the recovery chamber.

[0020] In some embodiments, the glue circulation system further includes a first power mechanism, the first power mechanism including a third gas supply pipeline connected to the glue storage chamber and used to inject gas medium into the glue storage chamber, a third control valve provided on the third gas supply pipeline and used to control the opening and closing of the third gas supply pipeline, and a gas source;

[0021] And / or, the glue liquid circulation system also includes a second power mechanism, which is connected to the recovery chamber and is used for a fourth air supply pipeline to inject gas medium into the recovery chamber, a fourth control valve arranged on the fourth air supply pipeline and used to control the opening and closing of the fourth air supply pipeline, and an air source.

[0022] In some embodiments, the third control valve and the fourth control valve are both solenoid valves, the solenoid valves have an air inlet and an air outlet, and the solenoid valves also have a switchable first position and a second position, when the solenoid valve is in the first position, the air inlet is connected to the air outlet; when the solenoid valve is in the second position, the air inlet and the air outlet are not connected to each other;

[0023] And / or, the third gas supply pipeline is provided with a first pressure regulating valve for adjusting the gas supply pressure;

[0024] And / or, the fourth gas supply pipeline is provided with a second pressure regulating valve for adjusting the gas supply pressure.

[0025] In some embodiments, the glue circulation system further includes a second power mechanism, which is a vacuum mechanism configured to vacuum the recovery chamber.

[0026] In some embodiments, the recovery chamber is higher than the glue storage chamber in the vertical direction, and / or the collection box is higher than the recovery chamber in the vertical direction.

[0027] In some embodiments, the glue circulation system further includes a first liquid pump disposed on the glue supply pipeline, wherein the first liquid pump is configured to pump the glue in the recovery container into the glue storage container; and / or,

[0028] The glue liquid circulation system further comprises a second liquid pump disposed on the recovery pipeline, wherein the second liquid pump is configured to pump the glue liquid in the collection box into the recovery container; and / or,

[0029] The glue liquid circulation system also includes a third liquid pump arranged on the glue feeding pipeline, and the third liquid pump is configured to pump the glue liquid in the glue storage container into the glue coating mechanism.

[0030] In some embodiments, the first valve is integrated into the first liquid pump, and / or the second valve is integrated into the second liquid pump.

[0031] In some embodiments, the glue feed pipeline includes a first glue feed branch pipe, a second glue feed branch pipe and a glue feed main pipe, and the first glue feed branch pipe, the second glue feed branch pipe and the glue feed main pipe are connected and communicated through a first three-way valve. When the first three-way valve is located at the first working position, the first glue feed branch pipe and the glue feed main pipe are communicated, so that a passage is formed between the glue storage chamber and the glue coating chamber, and a short circuit is formed between the recovery chamber and the glue coating chamber; when the first three-way valve is located at the second working position, the second glue feed branch pipe and the glue feed main pipe are communicated, so that a short circuit is formed between the glue storage chamber and the glue coating chamber, and a passage is formed between the recovery chamber and the glue coating chamber; when the first three-way valve is located at the third working position, a short circuit is formed between the glue storage chamber and the glue coating chamber, and a short circuit is formed between the recovery chamber and the glue coating chamber; and / or,

[0032] The recovery pipeline includes a first recovery branch pipe, a second recovery branch pipe and a recovery main pipe, which are connected and communicated through a second three-way valve. When the second three-way valve is located at the first workstation, the first recovery branch pipe is communicated with the recovery main pipe, so that a passage is formed between the recovery box and the rubber storage chamber, and a short circuit is formed between the recovery box and the recovery chamber; when the second three-way valve is located at the second workstation, the second recovery branch pipe is communicated with the recovery main pipe, so that a short circuit is formed between the recovery box and the rubber storage chamber, and a passage is formed between the recovery box and the recovery chamber; when the second three-way valve is located at the third workstation, a short circuit is formed between the recovery box and the rubber storage chamber, and a short circuit is formed between the recovery box and the recovery chamber.

[0033] In some embodiments, the glue storage container and the recovery container are stacked, and a first liquid pump is provided on the glue supply pipeline, and the first liquid pump is configured to pump the glue in the recovery container into the glue storage container.

[0034] In some embodiments, the glue storage container and the recovery container are stacked up and down, and / or the glue storage container and the recovery container are integrally arranged.

[0035] In some embodiments, a temperature control device is provided on the glue storage container, and the temperature control device includes a temperature control pipe, a temperature regulator and a liquid pump provided on the temperature control pipe, and the inlet and outlet of the temperature control pipe are both connected to the glue storage cavity.

[0036] Another object of the present invention is to provide a glue coating device, which includes the glue circulation system as described above.

[0037] Due to the application of the above-mentioned technical scheme, the embodiments of the present invention have the following advantages compared with the prior art: the glue liquid circulation system provided by the embodiments of the present invention, in which the glue coating chamber of the glue coating mechanism and the glue storage chamber of the glue storage container, as well as the collection box and the recovery chamber of the recovery container are connected to each other, can realize the online recovery and reuse of the glue liquid, and avoid the glue liquid dripping onto the machine platform of the glue coating equipment during the glue coating process of the glue coating mechanism, thereby polluting the machine platform and wasting the glue liquid; the recovered glue liquid is reused, which improves the utilization rate of the glue liquid and reduces the production cost of glue coating; the recovery and reuse of the glue liquid are completed online in real time, without the need for offline operation, thereby improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Attached Figure 1 is a schematic structural diagram of the glue liquid circulation system in Example 1 of the present invention, which illustrates the direction of the glue liquid when the glue liquid circulation system is in the first working state;

[0039] Attached Figure 2 is a schematic structural diagram of the glue liquid circulation system in Example 1 of the present invention, which illustrates the direction of the glue liquid when the glue liquid circulation system is in the second working state;

[0040] Attached Figure 3 is a schematic diagram of a first structure of a glue coating device in some embodiments;

[0041] Attached Figure 4 is a schematic diagram of a second structure of a glue coating device in some embodiments;

[0042] Attached Figure 5 A third structural schematic diagram of a glue coating device in some embodiments;

[0043] Attached Figure 6 for Figure 5 Schematic diagram of the glue discharging state of the middle glue coating device;

[0044] Attached Figure 7 is a schematic diagram of a fourth structure of a glue coating device in some embodiments;

[0045] Attached Figure 8 is a schematic structural diagram of the glue liquid circulation system in Example 2 of the present invention, which illustrates the direction of the glue liquid when the glue liquid circulation system is in the third working state;

[0046] Attached Fig. 9 is a schematic structural diagram of the glue liquid circulation system in Example 3 of the present invention, which illustrates the direction of the glue liquid when the glue liquid circulation system is in the first working state;

[0047] Attached Fig.10 is a schematic structural diagram of the glue liquid circulation system in Example 4 of the present invention, which illustrates the direction of the glue liquid when the glue liquid circulation system is in the first working state;

[0048] Attached Fig.11 is a schematic structural diagram of the glue liquid circulation system in Example 4 of the present invention, which illustrates the direction of the glue liquid when the glue liquid circulation system is in the third working state;

[0049] Attached Fig.12 is a schematic structural diagram of the glue liquid circulation system in Example 5 of the present invention, which illustrates the direction of the glue liquid when the glue liquid circulation system is in the first working state;

[0050] Attached Fig.13 is a schematic structural diagram of the glue liquid circulation system in Example 5 of the present invention, which illustrates the direction of the glue liquid when the glue liquid circulation system is in the third working state;

[0051] Attached Fig.14 is a schematic structural diagram of the glue liquid circulation system in Example 6 of the present invention, which illustrates the direction of the glue liquid when the glue liquid circulation system is in the third working state;

[0052] Attached Fig.15 This is a schematic diagram of the structure of the stacked arrangement of the glue storage container and the recovery container in Example 6 of the present invention;

[0053] Attached Fig.16 is a schematic diagram of the structure of the glue liquid circulation system in Example 7 of the present invention, wherein the first glue liquid circulation route is illustrated;

[0054] Attached Fig.17 is a schematic diagram of the structure of the glue liquid circulation system in Example 7 of the present invention, wherein the second glue liquid circulation route is illustrated;

[0055] Wherein: 1. Glue coating device; 110. Product conveying device; 120. Glue coating mechanism; 121. Device body; 122. Glue coating pipe; 123. Connecting pipe; 124. Upper glue coating wheel; 1241. First glue outlet hole; 1242. Second glue outlet hole; 1243. First half hole; 125. Lower glue coating wheel; 1251. Second half hole; 130. Collection box;

[0056] 2. Glue storage container; 3. Recycling container;

[0057] 4. Glue inlet pipeline; 41. Third liquid pump; 42. First three-way valve; 43. First glue inlet branch pipe; 44. Second glue inlet branch pipe; 45. Glue inlet main pipe;

[0058] 5. Recovery pipeline; 50. Second valve; 51. Second liquid pump; 52. Second three-way valve; 53. First recovery branch pipe; 54. Second recovery branch pipe; 55. Recovery main pipe;

[0059] 6. glue filling pipeline; 60. first valve; 61. first liquid pump; 7. first control valve assembly; 71. first air control valve; 72. first control valve; 73. first air supply pipeline; 8. second control valve assembly; 81. second air control valve; 82. second control valve; 83. second air supply pipeline;

[0060] 9. The third air supply pipeline; 10. The third control valve; 11. The first pressure regulating valve; 12. The first liquid level sensor; 13. The fourth air supply pipeline; 14. The fourth control valve; 15. The second pressure regulating valve; 16. The second liquid level sensor; 17. The viscosity sensor; 18. The stirring device; 20. The product to be processed; 21. The temperature sensor; 22. The temperature control pipeline; 23. The temperature regulator; 24. The defoaming device; 25. The filtering device; 26. The weight sensor. DETAILED DESCRIPTION

[0061] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, but they are not intended to limit the present invention.

[0062] Example 1

[0063] Figures 3 to 7 Some schematic diagrams of the glue coating device 1 are provided as examples. The glue coating device 1 includes a glue coating mechanism 120 for coating glue liquid onto the product 20 to be processed, and a collecting box 130 capable of receiving glue liquid dripping from the glue coating mechanism 120. The glue coating mechanism 120 has a glue coating cavity, which is connected to and communicates with a glue outlet component, and glue liquid is coated onto the product 20 to be processed through the glue outlet component. The collecting box 130 is located below the glue outlet component, and is capable of receiving glue liquid dripping from the glue coating mechanism 120 and the product 20 to be processed.

[0064] See also Figure 1 , Figure 2 The invention discloses a glue liquid circulation system, which comprises a glue storage container 2, a recovery container 3, a glue feeding pipe 4, a recovery pipe 5 and a glue replenishing pipe 6, wherein the glue storage container 2 has a glue storage cavity, the recovery container 3 has a recovery cavity, the glue feeding pipe 4 is connected between the glue coating device 1 and the glue storage container 2, and ...

[0065] Through the application of the above-mentioned scheme, the online recovery and reuse of the glue liquid can be realized, which avoids the glue liquid dripping onto the machine table of the glue coating mechanism 120 during the glue coating process of the glue coating mechanism 120, thereby polluting the machine table and wasting the glue liquid; the recovered glue liquid is reused, which improves the utilization rate of the glue liquid and reduces the production cost of glue coating; the recovery and reuse of the glue liquid are completed online in real time, without the need for offline operation, thereby improving production efficiency.

[0066] In some embodiments, Figure 3 or Figure 4 As shown, the gluing device 1 is provided with a product conveying device 110 and a gluing mechanism 120. The product conveying device 110 can convey the product 20 to be processed to the gluing station. At the gluing station, the gluing mechanism 120 can gluing the product 20 to be processed. During the gluing process, the glue will drip from the product 20 to be processed or directly from the gluing mechanism 120. Therefore, a collecting box 130 is provided below the gluing mechanism 120 to collect the dripping glue. The glue inlet pipe 4 is connected and communicated with the glue mechanism 120, so that the glue in the glue storage container 2 can be conveyed to the glue mechanism 120. The recovery pipe 5 is connected and communicated with the glue collection box 130, so that the glue in the glue collection box 130 can be conveyed to the recovery container 3.

[0067] Specifically, Figure 3 The first structure of the glue coating mechanism 120 is shown, which includes a glue coating mechanism body 121 and a glue coating tube 122 connected to the glue coating mechanism body 121. A glue coating cavity (not shown) is provided in the glue coating mechanism body 121. The glue coating tube 122 is connected to the glue coating cavity, and the glue inlet pipe 4 is connected to the glue coating cavity.

[0068] Specifically, Figure 4The second structure of the glue coating mechanism 120 is shown, and the glue coating mechanism 120 includes a connecting pipe 123, an upper glue coating wheel 124 and a lower glue coating wheel 125. The lower wheel surface of the upper glue coating wheel 124 and the upper wheel surface of the lower glue coating wheel 125 are arranged at intervals. The upper glue coating wheel 125 is provided with a glue hole, and the glue hole connects the upper wheel surface and the lower wheel surface of the upper glue coating wheel 124. The connecting pipe 123 is connected to the upper glue coating wheel 124 and the glue hole. The glue feeding pipe 4 is connected and connected to the connecting pipe 123. The connecting pipe 123 is hinged to the upper glue coating wheel 124 (for example, by a quick connector or a ball joint) or the glue feeding pipe 4 is hinged to the connecting pipe 123 (for example, by a quick connector or a ball joint). A glue coating gap is formed between the upper glue coating wheel 124 and the lower glue coating wheel 125, and the glue coating gap is used to accommodate the glue liquid flowing out of the glue hole. In the working state, the glue liquid can flow from the glue feeding pipe 4 into the glue hole, and then flow into the glue coating gap from the glue hole. At the glue coating station, the edge of the product 20 to be processed can be immersed in the glue liquid in the glue coating gap, and the edge of the product 20 to be processed and the glue coating gap move relative to each other, so that the glue liquid is coated on the edge of the product 20 to be processed. The glue coating mechanism 120 can move around the product 20 to be processed, or the product 20 to be processed can move along the extension direction of its own edge.

[0069] When the upper glue coating wheel 124 and the lower glue coating wheel 125 are both rotatably arranged, the glue can be evenly coated on the upper and lower edges and sides of the product 20 to be processed through the rotation of the upper glue coating wheel 124 and the lower glue coating wheel 125. The upper glue coating wheel 124 and the lower glue coating wheel 125 can be connected by a connecting shaft so that the two can rotate synchronously. Of course, the upper glue coating wheel 124 and the lower glue coating wheel 125 can also be fixedly arranged, or one of the upper glue coating wheel 124 and the lower glue coating wheel 125 can be rotatably arranged. Preferably, the upper glue coating wheel 124 with the glue hole is rotatably arranged, and if the glue hole is opened on the lower glue coating wheel 125 alone or simultaneously, the lower glue coating wheel 125 is also rotatably arranged. Among them, the product 20 to be processed can be a battery cell, a PCB, an FPC or a chip.

[0070] More specifically, if Figure 5 , Figure 6As shown, it is a first improvement of the second structure of the glue coating mechanism 120, and the glue hole includes a first glue outlet hole 1241 connected to the connecting tube 123, and a second glue outlet hole 1242 that connects the first glue outlet hole 1241 to the lower surface of the upper glue coating wheel 124. The rotating shaft of the upper glue coating wheel 124 is a vertical shaft, and the second glue outlet hole 1242 extends in the vertical direction. There are multiple second glue outlet holes 1242, and the multiple second glue outlet holes 1242 are arranged at intervals along the circumference (or the rotation direction) of the upper glue coating wheel 124, preferably at equal intervals (also referred to as an equal circumferential array arrangement). The first glue outlet hole 1241 is equivalent to a cavity for caching glue liquid, forming an isohydraulic environment. After the glue liquid is cached by the first glue outlet hole 1241, it can flow out from the multiple second glue outlet holes 1242 at the same pressure, that is, the glue liquid can flow out evenly from the multiple second glue outlet holes 1242. Among them, the first glue outlet hole 1241 is formed as a glue coating cavity.

[0071] When the upper glue coating wheel 124 is rotated, the glue flowing out from the second glue outlet hole 1242 performs centrifugal motion under the action of centrifugal force, and the glue is offset in a direction away from the rotation center of the upper glue coating wheel 124, that is, in the direction of the product to be processed 20, so that the glue can better adhere to the edge of the product to be processed 20 under the action of centrifugal force.

[0072] More specifically, if Figure 7 As shown, it is a second improvement of the second structure of the glue coating mechanism 120, and the glue hole includes a first glue outlet hole 1241 connected to the connecting tube 123, and a second glue outlet hole 1242 that connects the first glue outlet hole 1241 to the lower surface of the upper glue coating wheel 124. The glue hole also includes a first half hole 1243 on the lower surface of the upper glue coating wheel 124 and a second half hole 1251 on the upper surface of the lower glue coating wheel 125, and the first half hole 1243 and the second half hole 1251 cooperate with each other to form a glue outlet hole. There are multiple first half holes 1243, and the multiple first half holes 1243 are arranged along the radial direction of the upper glue coating wheel 124 and are distributed at intervals along the circumferential direction, preferably at equal intervals (also referred to as an equal circumferential array arrangement); there are multiple second half holes 1251, and the multiple second half holes 1251 are arranged along the radial direction of the lower glue coating wheel 125 and are distributed at intervals along the circumferential direction, preferably at equal intervals (also referred to as an equal circumferential array arrangement).

[0073] The rotation axis of the upper glue coating wheel 124 is a vertical axis, and the second glue outlet hole 1242 extends in the vertical direction. The second glue outlet hole 1242 is opened in the middle position of the upper glue coating wheel 124, and the upper end of the second glue outlet hole 1242 is connected to the first glue outlet hole 1241, and the lower end of the second glue outlet hole 1242 is connected to the second half hole 1251. In a preferred embodiment, the upper glue coating wheel 124 and the lower glue coating wheel 125 rotate synchronously, for example, the upper glue coating wheel 124 and the lower glue coating wheel 125 can be connected by a connecting shaft so that the two can rotate synchronously, and multiple first half holes 1243 and corresponding multiple second half holes 1251 can be closed to form multiple glue outlet holes during assembly, and the lower end of the second glue outlet hole 1242 is connected to the glue outlet hole. The first glue outlet hole 1241 is equivalent to a cavity for caching glue liquid, forming an isohydraulic environment. After the glue liquid is cached in the first glue outlet hole 1241, it can flow from multiple first half holes 1243 or multiple glue outlet holes to the glue coating gap with the same pressure, that is, the glue liquid can flow from multiple first half holes 1243 or multiple glue outlet holes to the glue coating gap evenly. The first glue outlet hole 1241 is formed as a glue coating cavity.

[0074] The glue liquid circulation system also includes a first control valve assembly 7 and a second control valve assembly 8, wherein: the first control valve assembly 7 includes a first valve, which in the present embodiment is specifically a first air-controlled valve 71, and the first air-controlled valve 71 is arranged on the glue replenishing pipeline 6, and the first air-controlled valve 71 can be switched between an open state and a closed state by gas control, wherein when the first air-controlled valve 71 is in an open state, the recovery chamber and the glue storage chamber are interconnected, and the glue liquid in the recovery chamber can flow into the glue storage chamber to replenish the glue liquid in the glue storage chamber; when the first air-controlled valve 71 is in a closed state, the recovery chamber and the glue storage chamber are not interconnected, and the glue liquid in the recovery chamber cannot flow into the glue storage chamber. The second control valve assembly 8 includes a second valve. In the present embodiment, the second valve is specifically a second air-controlled valve 81. The second air-controlled valve 81 is arranged on the recovery pipe 5. The second air-controlled valve 81 can also switch between an open state and a closed state through gas control. When the second air-controlled valve 81 is in an open state, the collection box 130 is connected to the recovery chamber, and the glue in the collection box 130 can enter the recovery chamber through the recovery pipe 5 for recovery; when the second air-controlled valve 81 is in a closed state, the collection box 130 is not connected to the recovery chamber.

[0075] In some embodiments, the glue circulation system has a switchable first working state and a second working state. When the glue circulation system is in the first working state, Figure 1As shown, the first air control valve 71 is in a closed state and the second air control valve 81 is in an open state. At this time, the first medium passage for applying glue and recovering glue is formed between the glue storage chamber, the glue feeding pipe 4, the glue coating chamber of the glue coating mechanism 120, the collecting box 130, the recovery pipe 5 and the recovery chamber. The glue in the glue storage chamber enters the glue coating chamber through the glue feeding pipe 4 and is applied to the product 20 to be processed. The glue dripping from the glue coating mechanism 120 or the product 20 to be processed is collected by the collecting box 130 and enters the recovery chamber through the recovery pipe 5. When the glue circulation system is in the second working state, as shown in FIG. Figure 2 As shown, the first air-controlled valve 71 is in an open state and the second air-controlled valve 81 is in a closed state. At this time, a second medium passage for replenishing glue liquid into the glue storage chamber is formed between the recovery chamber, the glue replenishing pipe 6 and the glue storage chamber. The glue storage chamber stops supplying glue liquid to the glue coating mechanism 120, and the recovery chamber replenishes glue liquid into the glue storage chamber through the glue replenishing pipe 6.

[0076] In some embodiments, the glue circulation system has a third working state and a fourth working state. When the glue circulation system is in the third working state, the first gas-controlled valve 71 and the second gas-controlled valve 81 are both in an open state, and a first medium passage for applying glue and recovering glue is formed between the glue storage chamber, the glue feeding pipe 4, the glue coating chamber of the glue coating mechanism 120, the collecting box 130, the recovery pipe 5 and the recovery chamber. The glue in the glue storage chamber enters the glue coating chamber through the glue feeding pipe 4 and is applied to the product 20 to be processed. The glue dripping from the glue coating mechanism 120 or the product 20 to be processed is collected by the collecting box 130 and enters the recovery chamber through the recovery pipe 5. A second medium passage for replenishing glue to the glue storage chamber is formed between the recovery chamber, the glue replenishing pipe 6 and the glue storage chamber, and the recovery chamber replenishes glue to the glue storage chamber through the glue replenishing pipe 6. When the glue circulation system is in the fourth working state, the first air-controlled valve 71 and the second air-controlled valve 81 are both in a closed state, the first medium passage and the second medium passage are both blocked, and the glue circulation system is in a shutdown state.

[0077] According to the process requirements, the glue circulation system has a switchable first working state, a second working state and a fourth working state; or, the glue circulation system has a switchable third working state and a fourth working state; or, the glue circulation system has a switchable first working state, a second working state, a third working state and a fourth working state.

[0078] In the technical solution of this embodiment, the glue coating mechanism 120 of the glue coating device 1 is connected to the glue storage chamber of the glue storage container 2 and the recovery chamber of the recovery container 3. When the glue liquid in the glue coating mechanism 120 needs to be recovered to the recovery chamber, or the glue liquid in the recovery chamber needs to be supplied to the glue storage chamber, the corresponding air-controlled valve (the first air-controlled valve 71 or the second air-controlled valve 81) can be opened. The glue liquid circulation system is mainly controlled by the air-controlled valve. When the air-controlled valve is in the closed state, the glue liquid does not contact the outside world in the pipeline (glue feeding pipeline 4, recovery pipeline 5 or glue replenishing pipeline 6), and is not easy to solidify, so it will not cause blockage and failure of the pipeline, ensuring the long-term stable operation of the glue liquid circulation system.

[0079] Specifically, the first air-controlled valve 71 and the second air-controlled valve 81 are similar to cylinder structures. When the first air-controlled valve 71 is opened, the valve stem of the first air-controlled valve 71 (similar to the cylinder rod) extends into the glue-replenishing pipeline 6 to block the glue-replenishing pipeline 6; when the first air-controlled valve 71 is closed, the valve stem of the first air-controlled valve 71 retracts from the glue-replenishing pipeline 6 to open the glue-replenishing pipeline 6. The structure and operation process of the second air-controlled valve 81 are the same or similar to those of the first air-controlled valve 71. When the viscosity of the glue liquid is relatively high, the first air-controlled valve 71 and the second air-controlled valve 81 can provide a relatively large opening and closing force, which can reduce the risk of failure caused by being stuck by the glue liquid.

[0080] In other embodiments, the first gas-controlled valve 71 and the second gas-controlled valve 81 may be replaced by one-way stop valves or other types of valves.

[0081] See also Figure 1 , Figure 2 As shown, in this embodiment, the first control valve assembly 7 also includes a first air supply pipe 73 and a first control valve 72. The first air supply pipe 73 is connected to the first air control valve 71 and is used to introduce a gaseous medium into the first air control valve 71, so that in the process of introducing a gaseous medium into the first air control valve 71, the first air control valve 71 is converted from a closed state to an open state or maintained in an open state, thereby connecting the recovery chamber and the glue storage chamber. The first control valve 72 is arranged on the first air supply pipe 73 and is used to control the opening and closing of the first air supply pipe 73. The first control valve 72 is specifically a solenoid valve, which has an air inlet and an air outlet, wherein the air inlet is used to connect to the air source, and the air outlet is used to connect to the first air control valve 71. The solenoid valve has a switchable first position and a second position. When the solenoid valve is in the first position, the air inlet and the air outlet of the solenoid valve are interconnected, so that the air source can supply the gas medium to the first air control valve 71; when the solenoid valve is in the second position, the air inlet and the air outlet of the solenoid valve are not interconnected, and at this time the air source cannot supply the gas medium to the first air control valve 71, so that the first air control valve 71 remains in a closed state. In this embodiment, the gas medium provided by the above-mentioned air source is compressed air.

[0082] Similarly, the second control valve assembly 8 also includes a second air supply pipeline 83 and a second control valve 82. The second air supply pipeline 83 is connected to the second air control valve 81 and is used to pass the gas medium into the second air control valve 81, so that the second air control valve 81 is converted from a closed state to an open state or kept in an open state during the process of passing the gas medium into the second air control valve 81, so that the collection box 130 can be connected to the recovery chamber for recycling glue. The second control valve 82 is arranged on the second air supply pipeline 83 and is used to control the opening and closing of the second air supply pipeline 83. Here, the second control valve 82 is also a solenoid valve, and its structure is similar to that of the solenoid valve as the first control valve 72, which will not be repeated here.

[0083] In some embodiments, the glue circulation system also includes a first liquid level sensor 12 for detecting the liquid level in the glue storage chamber. The first liquid level sensor 12 is communicated with the first control valve assembly 7 and the second control valve assembly 8. When the first liquid level sensor 12 detects that the liquid level of the glue drops below a set liquid level, the first control valve assembly 7 and the second control valve assembly 8 cooperate to stop supplying glue to the glue coating mechanism 120, and the glue is replenished from the recovery chamber to the glue storage chamber; when the first liquid level sensor 12 detects that the liquid level of the glue reaches another higher set liquid level, the first control valve assembly 7 and the second control valve assembly 8 cooperate to stop replenishing the glue into the glue storage chamber.

[0084] The glue liquid circulation system also includes a feeding device (not shown in the figure) for replenishing glue liquid or diluent into the recovery chamber, and a glue liquid state detection element, which is connected to the feeding device in communication. In this embodiment, the glue liquid state detection element includes a second liquid level sensor 16 for detecting the liquid level in the recovery chamber, and a viscosity sensor 17 for detecting the viscosity of the glue liquid in the recovery chamber. The second liquid level sensor 16 and the viscosity sensor 17 are respectively connected to the feeding device in communication. That is to say, when the second liquid level sensor 16 detects that the liquid level in the recovery chamber is low and needs to be replenished with glue liquid, or when the viscosity sensor 17 detects that the viscosity of the glue liquid in the recovery chamber is too high or too low and does not meet the production requirements, the diluent or new glue liquid is added to the recovery chamber through the feeding device. The glue liquid circulation system also includes a stirring device 18 for stirring the medium in the recovery chamber. After adding new glue liquid or diluent to the recovery chamber, the medium in the recovery chamber is mixed evenly through the stirring device 18. It should be noted here that a feeding device is used to replenish glue or diluent into the recovery chamber instead of directly replenishing glue or diluent into the glue storage chamber. The feeding process will not affect the operation of the glue storage chamber. The glue storage chamber can continuously supply glue to the glue coating mechanism 120, so that the glue coating mechanism 120 can continuously apply glue, thereby improving the glue coating efficiency of the glue coating mechanism 120.

[0085] In this embodiment, the glue liquid circulation system also includes a first power mechanism, which includes a third air supply pipeline 9 and a third control valve 10 provided on the third air supply pipeline 9 and used to control the opening and closing of the third air supply pipeline 9, and an air source. The third air supply pipeline 9 is connected between the air source and the glue storage container 2, and is connected to the glue storage cavity and used to inject a gas medium into the glue storage cavity. In this way, when the glue liquid circulation system is in the first working state, the third control valve 10 is opened to pass a gas medium into the glue storage cavity. The gas medium is compressed air here, so that the glue liquid in the glue storage cavity flows from the glue storage cavity to the glue feeding pipeline 4 under the action of the compressed gas and flows into the glue coating cavity of the glue coating mechanism 120, and then the glue liquid collected by the collection box 130 enters the recovery cavity through the recovery pipeline 5. Here, the third control valve 10 is also a solenoid valve, and its structure is similar to that of the solenoid valve as the first control valve 72, which will not be repeated here. The third air supply pipeline 9 is provided with a first pressure regulating valve 11 for adjusting the air supply pressure, so as to adjust the pressure of the compressed air entering the glue storage chamber so as to be controlled within a set range. By compressing the air in the glue storage chamber and maintaining the pressure of the compressed air in the glue storage chamber within the set range, the glue liquid in the glue storage chamber can be continuously pressed into the glue coating mechanism 120 of the glue coating device 1, ensuring that the flow rate of the glue liquid entering the glue coating mechanism 120 is maintained within a stable range, so that the glue liquid output from the glue coating mechanism 120 can be evenly coated on the product 20 to be processed. Preferably, by compressing the air in the glue storage chamber and maintaining the pressure of the compressed air in the glue storage chamber at a fixed value, the glue liquid in the glue storage chamber can be continuously pressed into the glue coating mechanism 120 on the glue coating device 1, ensuring that the flow rate of the glue liquid entering the glue coating mechanism 120 is a fixed value, so that the glue liquid output from the glue coating mechanism 120 can be evenly coated on the product 20 to be processed.

[0086] When the glue coating mechanism 120 is of the second structure mentioned above, the glue coating mechanism 120 includes an upper glue coating wheel 124 and a lower glue coating wheel 125. The upper glue coating wheel 124 is rotatably arranged. By controlling the pressure of the compressed air in the glue storage chamber and the rotation speed of the upper glue coating wheel 124, the pressure difference between the inlet and outlet of the glue hole is maintained within a preset range, or the pressure difference between the compressed air in the glue storage chamber and the pressure difference at the outlet of the glue hole are maintained within a preset range, thereby allowing the glue liquid to flow out of the glue hole evenly and stably.

[0087] In this embodiment, the glue liquid circulation system also includes a second power mechanism, which includes a fourth air supply pipeline 13 and a fourth control valve 14 provided on the fourth air supply pipeline 13 and used to control the opening and closing of the fourth air supply pipeline 13, and an air source. The fourth air supply pipeline 13 is connected between the air source and the recovery container 3, and is connected to the recovery chamber and used to inject a gas medium into the recovery chamber. In this way, when the glue liquid circulation system is in the second working state, the fourth control valve 14 is opened to pass a gas medium into the recovery chamber, and the gas medium is compressed air here, so that the glue liquid in the recovery chamber flows from the recovery chamber to the glue replenishing pipeline 6 and flows into the glue storage chamber under the action of the compressed air. Here, the fourth control valve 14 is also a solenoid valve, and its structure is similar to that of the solenoid valve as the first control valve 72, which will not be repeated here. A second pressure regulating valve 15 for adjusting the air supply pressure is provided on the fourth air supply pipeline 13, so as to adjust the pressure of the compressed air entering the recovery chamber so that it is controlled within a set range.

[0088] In other embodiments, the second power mechanism is a vacuum mechanism for evacuating the recovery chamber so as to suck the glue in the collection box 130 into the recovery chamber under negative pressure.

[0089] In this embodiment, the collecting box 130 is higher than the recovery chamber in the vertical direction. When the collecting box 130 is connected to the recovery chamber, the pressure of the glue liquid in the collecting box 130 is greater than the pressure of the glue liquid in the recovery chamber, so that the glue liquid in the collecting box 130 can automatically flow into the recovery chamber through the recovery pipe 5. By utilizing the glue liquid's own gravity and the U-tube principle, the glue liquid in the collecting box 130 can automatically flow into the recovery chamber through the recovery pipe 5.

[0090] In some embodiments, the glue liquid circulation system further includes a third power mechanism, which may be a liquid pump. The third power mechanism is disposed on the recovery pipe 5 to pump the glue liquid in the collection box 130 into the recovery chamber through the recovery pipe 5 .

[0091] In some embodiments, when the glue circulation system is used in the glue coating process of the product, when there is enough glue in the glue storage chamber, the control system controls the first control valve 72 to close and the first air control valve 71 to remain closed, the second control valve 82 to open and the second air control valve 81 to open and remain open, the third control valve 10 to open and the fourth control valve 14 to close, and compressed air to enter the glue storage chamber, so that the glue in the glue storage chamber passes through the glue inlet pipe 4 and enters the glue coating chamber on the glue coating mechanism 120 and then acts on the product to be processed 20, and the glue collected by the collection box 130 enters the recovery chamber through the recovery pipe 5.

[0092] When the first liquid level sensor 12 detects that the glue liquid in the glue storage chamber drops below the set liquid level, the control system controls the first control valve 72 to open so that the first air-controlled valve 71 opens and remains in an open state, and the second control valve 81 is closed so that the second air-controlled valve 81 closes and remains in a closed state. At the same time, the third control valve 10 is closed and the fourth control valve 14 is opened, and compressed air enters the recovery chamber, so that the glue liquid in the recovery chamber enters the glue storage chamber through the glue replenishing pipe 6, thereby replenishing the glue liquid into the glue storage chamber.

[0093] Example 2

[0094] See also Figure 8 As shown, the difference between this embodiment and embodiment 1 is that the second power mechanism is omitted in this embodiment. In this embodiment, the recovery chamber is higher than the glue storage chamber in the vertical direction, so that in the second working state, the pressure of the glue liquid in the recovery chamber is greater than the pressure of the glue liquid in the glue storage chamber. In this way, without the need to introduce compressed air into the recovery chamber, the glue liquid in the recovery chamber can automatically flow into the glue storage chamber through the glue replenishing pipe 6; by using the gravity of the glue liquid itself and the U-tube principle, the glue liquid in the recovery chamber automatically flows into the glue storage chamber through the glue replenishing pipe 6, eliminating the second power mechanism, making the structure of the glue liquid circulation system relatively simple.

[0095] Example 3

[0096] refer to Fig. 9 The glue liquid circulation system shown in the figure mainly differs from Example 1 in that the first valve 60 arranged on the glue supply pipeline 6 in this embodiment is a one-way valve, the second valve 50 arranged on the recovery pipeline 5 is also a one-way valve, a first liquid pump 61 is also arranged on the glue supply pipeline 6, a second liquid pump 51 is arranged on the recovery pipeline 5, and a third liquid pump 41 is also arranged on the glue supply pipeline 4.

[0097] In other embodiments, a third valve may be provided on the glue inlet pipeline 4, and the third valve is a one-way valve.

[0098] In other embodiments, the first valve 60 and / or the second valve 50 may not be provided.

[0099] In other embodiments, a liquid pump can be installed on any one or any two of the glue inlet pipeline 4, the recovery pipeline 5 and the glue replenishment pipeline 6, and the flow of glue in other pipelines without liquid pumps can be achieved by utilizing the glue's own gravity and the U-tube principle.

[0100] In the process of supplying glue to the glue coating mechanism 120 for coating the glue onto the product 20 to be processed, the third liquid pump 41 works to pump the glue in the glue storage chamber into the glue coating mechanism 120, the second liquid pump 51 works to pump the glue in the collection box 130 into the recovery chamber, and the first liquid pump 61 does not work.

[0101] When the glue liquid in the recovery chamber needs to be replenished into the glue storage chamber, the first liquid pump 61 works to pump the glue liquid in the recovery chamber into the glue storage chamber, the third liquid pump 41 can keep working or not work, and the second liquid pump 51 can keep working or not work.

[0102] Through the technical solution in this embodiment, online recovery and reuse of glue liquid can be achieved, which avoids the glue liquid dripping onto the machine table of the glue coating device 1 during the glue coating process of the glue coating mechanism 120, thereby polluting the machine table and wasting the glue liquid; the recovered glue liquid is reused, which improves the utilization rate of the glue liquid and reduces the production cost of glue coating; the recovery and reuse of the glue liquid are completed online in real time, without the need for offline operation, thereby improving production efficiency.

[0103] Without violating the principle of this embodiment, the technical solutions in Embodiments 1 and 2 can be applied to this embodiment.

[0104] Example 4

[0105] refer to Figure 10 to Figure 11 The glue circulation system shown in the figure is different from the embodiment 3 mainly in that the first valve 60 is integrated in the first liquid pump 61 , and the second valve 50 is integrated in the second liquid pump 51 .

[0106] When the glue circulation system is in the first working state, Fig.10 As shown, the third liquid pump 41 is turned on, the second valve 50 is opened and the second liquid pump 51 is turned on. At this time, a first medium passage for applying glue and recovering glue is formed between the glue storage chamber, the glue inlet pipe 4, the glue coating chamber of the glue coating mechanism 120, the collecting box 130, the recovery pipe 5 and the recovery chamber. The glue in the glue storage chamber enters the glue coating chamber through the glue inlet pipe 4 and is coated on the product 20 to be processed. The glue dripping from the glue coating mechanism 120 or the product 20 to be processed is collected by the collecting box 130 and enters the recovery chamber through the recovery pipe 5.

[0107] When the glue circulation system is in the third working state, the third liquid pump 41 is turned on, the second valve 50 is opened and the second liquid pump 51 is turned on, the first valve 60 is opened and the first liquid pump 61 is turned on, and a first medium passage for applying glue and recovering glue is formed between the glue storage chamber, the glue inlet pipe 4, the glue coating chamber of the glue coating mechanism 120, the collecting box 130, the recovery pipe 5 and the recovery chamber. The glue in the glue storage chamber enters the glue coating chamber through the glue inlet pipe 4 and is coated on the product 20 to be processed. The glue dripping from the glue coating mechanism 120 or the product 20 to be processed is collected by the collecting box 130 and enters the recovery chamber through the recovery pipe 5; a second medium passage for replenishing glue to the glue storage chamber is formed between the recovery chamber, the glue replenishing pipe 6 and the glue storage chamber, and the recovery chamber replenishes glue into the glue storage chamber through the glue replenishing pipe 6.

[0108] When the glue liquid circulation system is in the fourth working state, the third liquid pump 41 is closed, the second valve 50 is closed and the second liquid pump 51 is closed, the first valve 60 is closed and the first liquid pump 61 is closed, the first medium passage and the second medium passage are both blocked, and the glue liquid circulation system is in a shutdown state.

[0109] In other embodiments, a third valve may be provided on the glue inlet pipeline 4 , and the third valve may also be integrated into the third liquid pump 41 .

[0110] Through the technical solution in this embodiment, online recovery and reuse of glue liquid can be achieved, which avoids the glue liquid dripping onto the machine table of the glue coating device 1 during the glue coating process of the glue coating mechanism 120, thereby polluting the machine table and wasting the glue liquid; the recovered glue liquid is reused, which improves the utilization rate of the glue liquid and reduces the production cost of glue coating; the recovery and reuse of the glue liquid are completed online in real time, without the need for offline operation, thereby improving production efficiency.

[0111] Without violating the principle of this embodiment, the technical solutions in Embodiments 1 and 2 can be applied to this embodiment.

[0112] Example 5

[0113] like Fig.12 and Fig.13 As shown, combined Figure 3-Figure 7 A glue circulation system is provided, and the glue circulation system is used for a glue coating device 1, and the glue coating device 1 comprises a glue coating mechanism 120 for coating glue on a product 20 to be processed, and a collecting box 130 capable of receiving glue dripping from the glue coating mechanism 120, and the glue coating mechanism 120 has a glue coating cavity, and the glue coating cavity is connected and communicated with a glue outlet component, and glue is coated on the product 20 to be processed through the glue outlet component. The collecting box 130 is located below the glue outlet component, and can receive glue dripping from the glue coating mechanism 120 and the product 20 to be processed.

[0114] See also Fig.12 , Fig.13The invention discloses a glue liquid circulation system, which comprises a glue storage container 2, a recovery container 3, a glue feeding pipe 4, a recovery pipe 5 and a glue replenishing pipe 6, wherein the glue storage container 2 has a glue storage cavity, the recovery container 3 has a recovery cavity, the glue feeding pipe 4 is connected between the glue coating device 1 and the glue storage container 2, and ...

[0115] Through the application of the above-mentioned scheme, the online recovery and reuse of the glue liquid can be realized, which avoids the glue liquid dripping onto the machine table of the glue coating mechanism 120 during the glue coating process of the glue coating mechanism 120, thereby polluting the machine table and wasting the glue liquid; the recovered glue liquid is reused, which improves the utilization rate of the glue liquid and reduces the production cost of glue coating; the recovery and reuse of the glue liquid are completed online in real time, without the need for offline operation, thereby improving production efficiency.

[0116] The third air supply pipeline 9 is provided with a first pressure regulating valve 11 for adjusting the air supply pressure, so as to adjust the pressure of the compressed air entering the glue storage chamber so as to be controlled within a set range. By compressing the air in the glue storage chamber and maintaining the pressure of the compressed air in the glue storage chamber within the set range, the glue liquid in the glue storage chamber can be continuously pressed into the glue coating mechanism 120 of the glue coating device 1, ensuring that the flow rate of the glue liquid entering the glue coating mechanism 120 is maintained within a stable range, so that the glue liquid output from the glue coating mechanism 120 can be evenly coated on the product 20 to be processed. Preferably, by compressing the air in the glue storage chamber and maintaining the pressure of the compressed air in the glue storage chamber at a fixed value, the glue liquid in the glue storage chamber can be continuously pressed into the glue coating mechanism 120 on the glue coating device 1, ensuring that the flow rate of the glue liquid entering the glue coating mechanism 120 is a fixed value, so that the glue liquid output from the glue coating mechanism 120 can be evenly coated on the product 20 to be processed.

[0117] The recovery pipe 5 is provided with a second liquid pump 51, which can pump the glue in the collection box 130 into the recovery container 3. The glue supply pipe 6 is provided with a first liquid pump 61, which can pump the glue in the recovery container 3 into the glue storage container 2.

[0118] The glue liquid circulation system also includes a feeding device (not shown in the figure) for replenishing glue liquid or diluent into the recovery chamber, a second liquid level sensor 16 for detecting the liquid level in the recovery chamber, and a viscosity sensor 17 for detecting the viscosity of the glue liquid in the recovery chamber. The second liquid level sensor 16 and the viscosity sensor 17 are respectively connected to the feeding device for communication. That is, when the second liquid level sensor 16 detects that the liquid level in the recovery chamber is low and needs to be replenished with glue liquid, or when the viscosity sensor 17 detects that the viscosity of the glue liquid in the recovery chamber is too high or too low and does not meet the production requirements, the diluent or new glue liquid is added to the recovery chamber through the feeding device. The glue liquid circulation system also includes a stirring device 18 for stirring the medium in the recovery chamber. After adding new glue liquid or diluent to the recovery chamber, the medium in the recovery chamber is mixed evenly through the stirring device 18. It should be noted here that a feeding device is used to replenish glue or diluent into the recovery chamber instead of directly replenishing glue or diluent into the glue storage chamber. The feeding process will not affect the operation of the glue storage chamber. The glue storage chamber can continuously supply glue to the glue coating mechanism 120, so that the glue coating mechanism 120 can continuously apply glue, thereby improving the glue coating efficiency of the glue coating mechanism 120.

[0119] In some embodiments, a defoaming device 24 is further provided on the glue feeding pipeline 4, and the defoaming device 24 can be a filter screen provided on the glue feeding pipeline 4, or a defoaming agent adding mechanism is provided on the glue storage container 2 and / or the recovery container 3 to add a defoaming agent. The defoaming device 24 can remove bubbles in the glue solution, thereby improving the uniformity of the glue coating.

[0120] In some embodiments, the glue storage container 2 is also provided with a temperature control device, which includes a temperature control pipe 22 whose inlet and outlet are both connected to the glue storage container 2, and a temperature regulator 23 and a liquid pump are provided on the temperature control pipe 22. When working, the liquid pump pumps the glue liquid in the glue storage container 2 into the temperature regulator 23, and the temperature regulator 23 heats or cools the glue liquid to reach a preset temperature, and then the liquid pump pumps the glue liquid back to the glue storage container 2. The glue liquid at the preset temperature can maintain a preset viscosity, and then the glue liquid can be evenly coated on the product to be processed 20. The temperature control device of the above structure can also be provided on the recovery container 3. The structure of the temperature control device is not limited to the above structure. For example, the glue storage container 2 and / or the recovery container 3 can also be directly set as a jacketed or other form of heat exchanger to directly control the temperature of the glue liquid contained in itself; or the heat exchange pipe of the heat exchanger is extended into the glue storage container 2 and / or the recovery container 3 to control the temperature of the glue liquid.

[0121] In some embodiments, a filtering device 25 is further provided on the recovery pipe 5. The filtering device 25 includes a filter screen or other filtering structures. The filtering device 25 can remove impurities in the recovered glue liquid and improve the quality of the recovered glue liquid.

[0122] It should be noted that the structure of the glue coating mechanism 120 can directly refer to the description in Embodiment 1. Without violating the principle of this embodiment, the structures and technical solutions in Embodiments 1-4 can be applied to this embodiment.

[0123] Example 6

[0124] like Fig.14 and Fig.15 As shown, different from the previous embodiment, in this embodiment, the glue storage container 2 and the recovery container 3 are stacked, preferably, the glue storage container 2 and the recovery container 3 are stacked up and down, and the glue storage container 2 and the recovery container 3 are integrally arranged. The glue liquid in the recovery container 3 is pumped into the glue storage container 2 by the first liquid pump 61.

[0125] For other structures and functions of the glue circulation system in this embodiment, reference can be made to Embodiment 3 and Embodiment 4. Without violating the principle of this embodiment, the structures and technical solutions in Embodiments 1-5 can be applied to this embodiment.

[0126] Example 7

[0127] like Figure 3-Figure 7 As shown, the glue coating device 1 includes a glue coating mechanism 120 for coating glue to the product 20 to be processed, and a collecting box 130 capable of receiving glue dripping from the glue coating mechanism 120. The glue coating mechanism 120 has a glue coating chamber, which is connected to and communicates with a glue outlet component, and glue is coated on the product 20 to be processed through the glue outlet component. The collecting box 130 is located below the glue outlet component, and can receive glue dripping from the glue coating mechanism 120 and the product 20 to be processed.

[0128] like Fig.16 and Fig.17 As shown, a glue liquid circulation system includes a glue storage container 2, a recovery container 3, a glue feed pipe 4, a recovery pipe 5 and a glue replenishing pipe 6, wherein the glue storage container 2 has a glue storage cavity, the recovery container 3 has a recovery cavity, the glue storage container 2 and the recovery container 3 are both connected to the glue coating mechanism 120 through the glue feed pipe 4, so that the glue storage cavity and the recovery cavity are both connected to the glue coating cavity of the glue coating mechanism 120; the glue storage container 2 and the recovery container 3 are both connected to the collection box 130 through the recovery pipe 5, so that the glue storage cavity and the recovery cavity are both connected to the collection box 130; the glue storage container 2 and the recovery container 3 are connected by the glue replenishing pipe 6, so that the glue storage cavity and the recovery cavity are connected through the glue replenishing pipe 6.

[0129] like Fig.16As shown, when a passage is formed between the glue storage chamber and the glue coating chamber, a short circuit is formed between the recovery chamber and the glue coating chamber, that is, the glue can only flow from the glue storage chamber into the glue coating chamber, and cannot flow from the recovery chamber into the glue coating chamber; at the same time, a passage is formed between the recovery chamber and the collecting box 130, and a short circuit is formed between the glue storage chamber and the collecting box 130, that is, the glue can only flow from the collecting box 130 into the recovery chamber, and cannot flow from the collecting box 130 into the glue storage chamber.

[0130] like Fig.17 As shown, when a short circuit is formed between the glue storage chamber and the glue coating chamber, a passage is formed between the recovery chamber and the glue coating chamber, that is, the glue cannot flow from the glue storage chamber into the glue coating chamber, but can only flow from the recovery chamber into the glue coating chamber; at the same time, a short circuit is formed between the recovery chamber and the collecting box 130, and a passage is formed between the glue storage chamber and the collecting box 130, that is, the glue cannot flow from the collecting box 130 into the recovery chamber, but can only flow from the collecting box 130 into the glue storage chamber.

[0131] The meaning of the above pipeline structure is that both the glue storage container 2 and the recovery container 3 can be used as glue supply components for supplying glue to the glue coating mechanism 120, and both the glue storage container 2 and the recovery container 3 can be used as recovery components for recovering glue from the collection box 130. When one of the glue storage container 2 and the recovery container 3 is used as a glue supply component, the other is used as a recovery component. Two glue circulation routes are formed in the glue circulation system. When one of the glue circulation routes fails, the other glue circulation route can be replaced in time, which can reduce the risk of shutdown of the glue coating equipment. The glue storage container 2 does not serve as a glue supply component and a recovery component at the same time, and the recovery container 3 does not serve as a glue supply component and a recovery component at the same time, which avoids the recovered glue from directly entering the glue supply component. The recovered glue enters the recovery component and is processed before entering the glue supply component, which can improve the quality of glue coating.

[0132] Through the application of the above-mentioned scheme, the online recovery and reuse of the glue liquid can be realized, which avoids the glue liquid dripping onto the machine table of the glue coating mechanism 120 during the glue coating process of the glue coating mechanism 120, thereby polluting the machine table and wasting the glue liquid; the recovered glue liquid is reused, which improves the utilization rate of the glue liquid and reduces the production cost of glue coating; the recovery and reuse of the glue liquid are completed online in real time, without the need for offline operation, thereby improving production efficiency.

[0133] In combination with Example 1, when one of the two glue circulation routes is working, according to the needs of the process, the one glue circulation route has a switchable first working state, a second working state and a fourth working state; or, the glue circulation route has a switchable third working state and a fourth working state; or, the glue circulation route has a switchable first working state, a second working state, a third working state and a fourth working state. Among them, the first working state, the second working state, the third working state and the fourth working state refer to the description in Example 1.

[0134] In combination with Example 1, the glue circulation system further includes a first power mechanism and a second power mechanism. In different glue circulation routes, the first power mechanism is used to pump or press the glue in the glue storage container 2 into the glue coating chamber or the recovery chamber, and the second power mechanism is correspondingly used to pump or press the glue in the recovery container 3 into the glue storage chamber or the glue coating chamber. The first power mechanism and the second power mechanism refer to the description in Example 1.

[0135] In some embodiments, the glue state detection element includes a weight sensor 26 for detecting the weight of the glue in the glue supply component. The weight sensor 26 is connected to the first control valve assembly 7 and the second control valve assembly 8. When the weight sensor 26 detects that the weight of the glue drops below a set weight, the first control valve assembly 7 and the second control valve assembly 8 cooperate to stop supplying glue to the glue coating mechanism 120, and the glue supply component is replenished with glue by the recovery component; when the weight sensor 26 detects that the weight of the glue reaches another larger set weight, the first control valve assembly 7 and the second control valve assembly 8 cooperate to stop replenishing the glue in the glue supply component. Specifically, a weight sensor 26 connected to the glue storage container 2 and the recovery container 3 is provided below the glue storage container 2 and the recovery container 3, respectively, to weigh the glue storage container 2 and the recovery container 3 containing the glue, and the weight of the glue can be indirectly calculated by deducting the weight of the container.

[0136] In this embodiment, the glue state detection element includes the weight sensor 26 mentioned above, and also includes a viscosity sensor 17 for detecting the viscosity of the glue in the recycling component. The glue circulation system also includes a feeding device (not shown in the figure) for replenishing glue or diluent into the recycling component. The weight sensor 26 and the viscosity sensor 17 are respectively connected to the feeding device for communication. That is to say, when the weight sensor 26 detects that the weight of the recycling component is low and glue needs to be replenished, or when the viscosity sensor 17 detects that the viscosity of the glue in the recycling component is too high or too low and does not meet the production requirements, the diluent or new glue is added to the recycling component through the feeding device. The glue circulation system also includes a stirring device 18 for stirring the medium in the recycling component. After adding new glue or diluent to the recycling component, the medium in the recycling component is mixed evenly through the stirring device 18. It should be noted here that the glue or diluent is replenished into the recovery component by a filling device instead of directly replenishing the glue or diluent into the glue supply component. The filling process will not affect the operation of the glue supply component. The glue supply component can continuously supply glue to the glue coating mechanism 120, so that the glue coating mechanism 120 can continuously perform glue coating, thereby improving the glue coating efficiency of the glue coating mechanism 120.

[0137] In some embodiments, Fig.16As shown, the glue feed pipeline 4 includes a first glue feed branch pipe 43, a second glue feed branch pipe 44 and a glue feed main pipe 45. The first glue feed branch pipe 43, the second glue feed branch pipe 44 and the glue feed main pipe 45 are connected and communicated through a first three-way valve 42. When the first three-way valve 42 is located at the first working position, the first glue feed branch pipe 43 and the glue feed main pipe 45 are communicated, so that a passage is formed between the glue storage chamber and the glue coating chamber, and a short circuit is formed between the recovery chamber and the glue coating chamber; when the first three-way valve 42 is located at the second working position, the second glue feed branch pipe 44 and the glue feed main pipe 45 are communicated, so that a short circuit is formed between the glue storage chamber and the glue coating chamber, and a passage is formed between the recovery chamber and the glue coating chamber; when the first three-way valve 42 is located at the third working position, a short circuit is formed between the glue storage chamber and the glue coating chamber, and a short circuit is formed between the recovery chamber and the glue coating chamber. Of course, the glue inlet main pipe may not be set up. The glue storage chamber is directly connected to the glue coating chamber through the first glue inlet branch pipe 43, and a valve is set on the first glue inlet branch pipe 43 to control the on and off. The recovery chamber is directly connected to the glue coating chamber through the second glue inlet branch pipe 44, and a valve is set on the second glue inlet branch pipe 44 to control the on and off.

[0138] In some embodiments, Fig.17 As shown, the recovery pipeline 5 includes a first recovery branch pipe 53, a second recovery branch pipe 54 and a recovery main pipe 55, which are connected and communicated through a second three-way valve 52. When the second three-way valve 52 is located at the first position, the first recovery branch pipe 53 and the recovery main pipe 55 are communicated, so that a passage is formed between the recovery box 130 and the glue storage chamber, and a circuit is formed between the recovery box 130 and the recovery chamber; when the second three-way valve 52 is located at the second position, the second recovery branch pipe 54 and the recovery main pipe 55 are communicated, so that a circuit is formed between the recovery box 130 and the glue storage chamber, and a passage is formed between the recovery box 130 and the recovery chamber; when the second three-way valve 52 is located at the third position, a circuit is formed between the recovery box 130 and the glue storage chamber, and a circuit is formed between the recovery box 130 and the recovery chamber. A second liquid pump 51 is arranged on the recovery main pipe 55 to provide power for the flow of the glue liquid in the recovery pipeline 5. Of course, the recovery main pipe 55 may not be set. The recovery box 130 is directly connected to the glue storage chamber through the first recovery branch pipe 53, and a valve is set on the first recovery branch pipe 53 to control the on-off. The recovery box 130 is directly connected to the recovery chamber through the second recovery branch pipe 54, and a valve is set on the second recovery branch pipe 54 to control the on-off.

[0139] Example 8

[0140] A glue coating device, the main improvement of which lies in the glue circulation system, and the glue circulation system adopts a technical solution formed by any one of embodiments 1 to 7 or a proper combination of any two or more embodiments.

[0141] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A glue circulation system for a glue coating device, the glue coating device comprising a glue coating mechanism for coating glue on a product to be processed, and a collecting box capable of receiving glue dripping from the glue coating mechanism, the glue coating mechanism having a glue coating cavity, characterized in that: The glue circulation system comprises: A glue storage container having a glue storage cavity; a recovery container having a recovery chamber; A glue inlet pipeline, the glue inlet pipeline connecting the glue storage chamber and the glue coating chamber; A recovery pipe, the recovery pipe connecting the collection box and the recovery chamber; A glue supply pipeline, wherein the glue supply pipeline is connected with the recovery chamber and the glue storage chamber; A first valve, wherein the first valve is disposed on the glue supply pipeline, wherein the recovery chamber and the glue storage chamber are connected to each other when the first valve is in an open state, and the recovery chamber and the glue storage chamber are not connected to each other when the first valve is in a closed state; The second valve is arranged on the recovery pipe, when the second valve is in an open state, the recovery chamber and the collection box are connected to each other, and when the second valve is in a closed state, the recovery chamber and the collection box are not connected to each other.

2. The glue circulation system according to claim 1, characterized in that: The first valve is a first air-controlled valve, the glue liquid circulation system further comprises a first air supply pipeline and a first control valve, the first air supply pipeline is connected to the first air-controlled valve and is used to introduce gas medium into the first air-controlled valve, the first control valve is arranged on the first air supply pipeline and is used to control the opening and closing of the first air supply pipeline; and / or, The second valve is a second air-controlled valve, and the glue liquid circulation system also includes a second air supply pipeline and a second control valve. The second air supply pipeline is connected to the second air-controlled valve and is used to introduce gas medium into the second air-controlled valve. The second control valve is arranged on the second air supply pipeline and is used to control the opening and closing of the second air supply pipeline.

3. The glue circulation system according to claim 1, characterized in that: The glue circulation system has a first working state and a second working state. When the glue circulation system is in the first working state, the first valve is in a closed state and the second valve is in an open state, and a first medium passage for applying glue and recovering glue is formed between the glue storage chamber, the glue inlet pipe, the glue coating chamber, the collecting box, the recovery pipe and the recovery chamber; when the glue circulation system is in the second working state, the first valve is in an open state and the second valve is in a closed state, and a second medium passage for replenishing glue to the glue storage chamber is formed between the recovery chamber, the glue replenishment pipe and the glue storage chamber.

4. The glue circulation system according to claim 1 or 3, characterized in that: The glue circulation system has a third working state and a fourth working state. When the glue circulation system is in the third working state, the first valve and the second valve are both in an open state, and a first medium passage for applying glue and recovering glue is formed between the glue storage chamber, the glue inlet pipe, the glue coating chamber, the collecting box, the recovery pipe and the recovery chamber. A second medium passage for replenishing glue to the glue storage chamber is formed between the recovery chamber, the glue replenishment pipe and the glue storage chamber. When the glue circulation system is in the fourth working state, the first valve and the second valve are both in a closed state, and the first medium channel and the second medium channel are both blocked.

5. The glue circulation system according to claim 1, characterized in that: The glue circulation system also includes one of the following structures or a combination of two or more thereof: (1) a first liquid level sensor for detecting the liquid level in the glue storage chamber, wherein the first liquid level sensor is communicatively connected with the first valve and the second valve; (2) The glue liquid circulation system further includes a feeding device for replenishing glue liquid or diluent into the recovery chamber and a glue liquid state detection element, the glue liquid state detection element is communicatively connected with the feeding device, and the glue liquid state detection element includes at least one of a second liquid level sensor for detecting the liquid level in the recovery chamber, a viscosity sensor for detecting the viscosity of the glue liquid in the recovery chamber, and a weight sensor for detecting the weight of the liquid in the recovery chamber; (3) A stirring device for stirring the medium in the recovery chamber.

6. The glue circulation system according to claim 1, characterized in that: The glue liquid circulation system also includes a first power mechanism, which includes a third air supply pipeline connected to the glue storage chamber and used to inject gas medium into the glue storage chamber, a third control valve provided on the third air supply pipeline and used to control the opening and closing of the third air supply pipeline, and an air source; And / or, the glue liquid circulation system also includes a second power mechanism, which is connected to the recovery chamber and is used for a fourth air supply pipeline to inject gas medium into the recovery chamber, a fourth control valve arranged on the fourth air supply pipeline and used to control the opening and closing of the fourth air supply pipeline, and an air source.

7. The glue circulation system according to claim 6, characterized in that: The third control valve and the fourth control valve are both solenoid valves, each having an air inlet and an air outlet, and each having a switchable first position and a second position. When the solenoid valve is in the first position, the air inlet is connected to the air outlet; when the solenoid valve is in the second position, the air inlet and the air outlet are not connected to each other. And / or, the third gas supply pipeline is provided with a first pressure regulating valve for adjusting the gas supply pressure; And / or, the fourth gas supply pipeline is provided with a second pressure regulating valve for adjusting the gas supply pressure.

8. The glue circulation system according to claim 1, characterized in that: The glue circulation system also includes a second power mechanism, which is a vacuum mechanism configured to vacuum the recovery chamber.

9. The glue circulation system according to claim 1, characterized in that: The glue liquid circulation system further comprises a first liquid pump disposed on the glue replenishing pipeline, wherein the first liquid pump is configured to pump the glue liquid in the recovery container into the glue storage container; and / or, The glue liquid circulation system further comprises a second liquid pump disposed on the recovery pipeline, wherein the second liquid pump is configured to pump the glue liquid in the collection box into the recovery container; and / or, The glue liquid circulation system also includes a third liquid pump arranged on the glue feeding pipeline, and the third liquid pump is configured to pump the glue liquid in the glue storage container into the glue coating mechanism.

10. The glue circulation system according to claim 9, characterized in that: The first valve is integrated in the first liquid pump, and / or the second valve is integrated in the second liquid pump.

11. The glue circulation system according to claim 1, characterized in that: The glue feed pipeline includes a first glue feed branch pipe, a second glue feed branch pipe and a glue feed main pipe, which are connected and communicated through a first three-way valve. When the first three-way valve is located at the first working position, the first glue feed branch pipe and the glue feed main pipe are communicated, so that a passage is formed between the glue storage chamber and the glue coating chamber, and a short circuit is formed between the recovery chamber and the glue coating chamber; when the first three-way valve is located at the second working position, the second glue feed branch pipe and the glue feed main pipe are communicated, so that a short circuit is formed between the glue storage chamber and the glue coating chamber, and a passage is formed between the recovery chamber and the glue coating chamber; when the first three-way valve is located at the third working position, a short circuit is formed between the glue storage chamber and the glue coating chamber, and a short circuit is formed between the recovery chamber and the glue coating chamber; and / or, The recovery pipeline includes a first recovery branch pipe, a second recovery branch pipe and a recovery main pipe, which are connected and communicated through a second three-way valve. When the second three-way valve is located at the first workstation, the first recovery branch pipe is communicated with the recovery main pipe, so that a passage is formed between the recovery box and the rubber storage chamber, and a short circuit is formed between the recovery box and the recovery chamber; when the second three-way valve is located at the second workstation, the second recovery branch pipe is communicated with the recovery main pipe, so that a short circuit is formed between the recovery box and the rubber storage chamber, and a passage is formed between the recovery box and the recovery chamber; when the second three-way valve is located at the third workstation, a short circuit is formed between the recovery box and the rubber storage chamber, and a short circuit is formed between the recovery box and the recovery chamber.

12. The glue circulation system according to claim 1, characterized in that: The glue storage container and the recovery container are stacked, and a first liquid pump is provided on the glue supply pipeline, and the first liquid pump is configured to pump the glue liquid in the recovery container into the glue storage container; A temperature control device is arranged on the glue storage container, and the temperature control device comprises a temperature control pipe, a temperature regulator and a liquid pump arranged on the temperature control pipe, and the inlet and outlet of the temperature control pipe are both connected to the glue storage cavity.

13. A glue coating device, comprising the glue liquid circulation system according to any one of claims 1 to 12.

Images