Glue supply system of coating machine and coating machine

Abstract

The utility model relates to the field of coating process, in particular to a coating machine glue supply system and a coating machine, the coating machine glue supply system comprises at least two storage devices, a glue supply main pipeline and at least two glue supply branch pipelines. Each storage device is provided with a storage space for storing glue and comprises a glue outlet pipe, and the glue outlet pipe is arranged at the bottom of the storage device and communicated with the storage space. A glue supply pump is arranged on the glue supply main pipeline, each glue supply branch pipeline is provided with a control valve, the control valves are used for opening and closing the glue supply branch pipelines, one end of each glue supply branch pipeline is communicated with the glue outlet pipe of the corresponding storage device, and the other end of each glue supply branch pipeline is communicated with the glue supply main pipeline. According to the glue supply system of the coating machine, when the remaining glue in one storage device is small, the other glue supply branch pipeline is opened, so that the glue in the other storage device fully flows to the glue supply main pipeline, insufficient glue supply within a short time after the glue supply branch pipelines are switched is prevented, and it is guaranteed that the glue supply main pipeline can supply glue continuously and stably.

Description

Technical Field

[0001] The utility model relates to the field of coating technology, in particular to a coating machine glue supply system and a coating machine. Background Art

[0002] Slit coating technology is a high-precision coating technology that uses a high-precision die head and a high-precision coating system to apply viscous liquid or paste materials to specific locations on the product, thereby achieving high-precision, high-efficiency and high-quality coating operations. Slit coating equipment is mainly composed of a feeding unit, a coating unit, a control system, etc., among which the feeding unit includes a storage tank and a delivery pump, etc.

[0003] At present, in the production process of slit coaters, in order to achieve continuous production, fixed storage tanks are usually used for continuous glue supply. The glue is stored in the storage tank, and the glue is supplied to the slit coating outlet through a glue supply pump or gravity flow to supply the continuous coating production of the slit coating. Alternatively, the three passages of the three-way valve are respectively connected to two different storage tanks and the glue outlet, and the three-way valve is used to switch the connection between different storage tanks to achieve continuous glue supply. However, when using a three-way valve to switch the glue in different storage tanks, due to the high viscosity and poor fluidity of the glue, there is a lag in the glue when switching the three-way valve, resulting in insufficient glue supply in a short period of time, resulting in a local film-free problem on the glue surface during coating.

[0004] Therefore, there is an urgent need for a coating machine glue supply system to solve the above problems. Utility Model Content

[0005] The utility model aims to provide a coating machine glue supply system and a coating machine, which can supply glue continuously and stably.

[0006] According to one aspect of the utility model, the following technical solution is adopted:

[0007] A glue supply system for a coating machine, comprising:

[0008] At least two storage devices, each of which is provided with a storage space for storing glue, and the storage device comprises a glue outlet pipe, which is provided at the bottom of the storage device and communicated with the storage space;

[0009] A glue supply main line, wherein a glue supply pump is arranged on the glue supply main line;

[0010] At least two glue supply sub-pipelines are provided, each of which is provided with a control valve, and the control valve can open and close the glue supply sub-pipeline, one end of each of the glue supply sub-pipelines is connected to the glue outlet pipe of a corresponding storage device, and the other end of each of the glue supply sub-pipelines is connected to the glue supply main pipeline.

[0011] As an optional solution for the glue supply system of the coating machine, an installation valve is also provided on the glue supply branch pipeline, and the installation valve is connected between the storage device and the control valve.

[0012] As an optional solution for the glue supply system of the coating machine, the mounting valve is detachably connected to the control valve.

[0013] As an optional solution for the glue supply system of the coating machine, the glue outlet pipe is arranged at the bottom of the side wall of the storage device.

[0014] As an optional solution for the glue supply system of the coating machine, the glue outlet pipe is arranged at the bottom of the side wall of the storage device.

[0015] As an optional solution for the glue supply system of the coating machine, the distance between the glue outlet pipe and the bottom surface of the storage device in the height direction is H, wherein 5mm≤H≤20mm.

[0016] As an optional solution for the glue supply system of the coating machine, a slope structure inclined toward the glue outlet pipe is provided at the bottom of the storage space.

[0017] As an optional solution for the glue supply system of the coating machine, the angle between the inclined surface of the ramp structure and the bottom surface of the storage device is A, wherein 15°≤A≤30°.

[0018] As an optional solution for the glue supply system of the coating machine, a filtering device is also arranged on the main glue supply line.

[0019] As an optional solution for the glue supply system of the coating machine, a pressure detection element is also provided on the main glue supply line, and the pressure detection element is connected to the filtering device, and the pressure detection element is used to detect the pressure of the glue in the filtering device.

[0020] According to another aspect of the utility model, a coating machine is provided, comprising a coating unit and the above-mentioned coating machine glue supply system, wherein the outlet of the main glue supply line is connected to the coating unit.

[0021] Beneficial effects of the utility model:

[0022] The utility model provides a glue supply system for a coating machine, including a storage device, a main glue supply line and a branch glue supply line, wherein the storage device is formed with a storage space for storing glue, and a glue outlet pipe connected to the storage space is provided at the bottom of the storage device, and the glue can flow out of the storage device from the glue outlet pipe by its own weight. The branch glue supply line includes a control valve capable of opening and closing the branch glue supply line, and a plurality of branch glue supply lines are provided, one end of each branch glue supply line is connected to a glue outlet pipe of a different storage device, and the other end of each branch glue supply line is connected to the main glue supply line. The main glue supply line includes a glue supply pump, and the glue supply pump can drive the glue to flow to the end of the glue supply system of the coating machine. The glue supply system of the coating machine is provided with multiple glue supply sub-pipelines, each of which is connected to a different storage device. When there is little glue remaining in a storage device in use, another glue supply sub-pipeline can be opened in advance, so that the glue can flow fully in the other glue supply sub-pipeline to the main glue supply line in advance, thereby preventing insufficient glue supply in a short time after switching the glue supply sub-pipeline, and ensuring continuous and stable glue supply in the main glue supply line.

[0023] The utility model also provides a coating machine, comprising the coating machine glue supply system and the coating unit, which can continuously and stably supply glue during coating, thereby ensuring the quality and efficiency of the glue output by the coating machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of a glue supply system of a coating machine provided in an embodiment of the utility model;

[0025] Figure 2 It is a structural schematic diagram of a storage device of a glue supply system of a coating machine provided in an embodiment of the utility model.

[0026] In the figure:

[0027] 1. Storage device; 11. Storage space; 12. Rubber outlet pipe; 13. Slope structure; 14. First storage device; 15. Second storage device;

[0028] 2. Glue supply pump;

[0029] 3. Control valve; 31. First control valve; 32. Second control valve;

[0030] 4. Installation valve; 41. First installation valve; 42. Second installation valve;

[0031] 5. Filter device; 6. Pressure detection element; 7. Multi-way connector;

[0032] 8. Connecting pipe assembly; 81. First connecting pipe; 82. Second connecting pipe; 83. Third connecting pipe; 84. Fourth connecting pipe; 85. Fifth connecting pipe. DETAILED DESCRIPTION

[0033] The technical solution of the utility model is further described below in conjunction with the accompanying drawings and implementation methods. It is understood that the specific embodiments described herein are only used to explain the utility model, rather than to limit the utility model. It should also be noted that, for the convenience of description, only the parts related to the utility model are shown in the accompanying drawings, rather than all.

[0034] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0036] like Figure 1 and Figure 2 As shown, the glue supply system of the coating machine in this embodiment includes at least two storage devices 1, a main glue supply pipeline and at least two glue supply branch pipelines. Each storage device 1 is provided with a storage space 11 for storing glue, and the storage device 1 includes a glue outlet pipe 12, which is arranged at the bottom of the storage device 1 and connected to the storage space 11. The glue stored in the storage space 11 can flow out of the glue outlet pipe 12 by its own weight. A glue supply pump 2 is arranged on the main glue supply pipeline, and the glue supply pump 2 is used to transport the glue entering the main glue supply pipeline to the end. A control valve 3 is arranged on each glue supply branch pipeline, and the control valve 3 can open and close the glue supply branch pipeline. One end of each glue supply branch pipeline is connected to the glue outlet pipe 12 of a corresponding storage device 1, and the other end of each glue supply branch pipeline is connected to the main glue supply pipeline. In this embodiment, the number of glue supply branch pipelines is set to two. Of course, in some other embodiments, the number of glue supply branch pipelines can be three, four, etc., which can be configured according to production requirements.

[0037] The coating machine glue supply system of the present embodiment is provided with at least two glue supply sub-pipelines, each of which is connected to a corresponding storage device 1. When there is not much glue remaining in a storage device 1 in use, the other glue supply sub-pipeline can be opened in advance, so that the glue in the new storage device 1 can flow fully to the main glue supply line in the other glue supply sub-pipeline in advance, thereby preventing insufficient glue supply in a short time after switching the glue supply sub-pipeline, and ensuring that the main glue supply line can supply glue continuously and stably.

[0038] like Figure 1 As shown, in this embodiment, two storage devices 1 and two glue supply sub-pipelines are provided, the two storage devices 1 include a first storage device 14 and a second storage device 15, the two glue supply sub-pipelines include a first glue supply sub-pipeline and a second glue supply sub-pipeline, the first storage device 14 is connected to the first glue supply sub-pipeline, the second storage device 15 is connected to the second glue supply sub-pipeline, and a first control valve 31 is provided on the first glue supply sub-pipeline, a second control valve 32 is provided on the second glue supply sub-pipeline, and both the first glue supply sub-pipeline and the second glue supply sub-pipeline are connected to the main glue supply line. When the first storage device 14 supplies glue to the main glue supply line, the second control valve 32 is in a closed state; when the remaining glue in the first storage device 14 is insufficient, the second control valve 32 is opened, so that the glue in the second storage device 15 can fully flow in the second glue supply sub-pipeline through the second control valve 32 and flow to the main glue supply line, and when the first glue supply sub-pipeline cannot continue to supply glue, the second glue supply sub-pipeline continues to supply glue to the main glue supply line. After closing the first control valve 31, glue can continue to be stored in the first storage device 14 for subsequent use. To avoid bubbles in the added glue, the glue can be fully stirred after being added to the storage device 1 to remove the bubbles.

[0039] In some embodiments, the glue outlet pipe 12 is disposed on the bottom surface of the storage device 1. Figure 2 As shown, the glue outlet pipe 12 is arranged at the bottom of the side wall of the storage device 1 to ensure that the bottom surface of the storage device 1 is flat, so that the storage device 1 can be placed flat and stable. As a preferred solution, the height distance between the glue outlet pipe 12 and the bottom surface of the storage device 1 is defined as H, where 5mm≤H≤20mm, so as to reduce the glue residue at the bottom of the storage space 11 while ensuring the structural strength of the storage device 1. In some embodiments, H is 5mm. In some other embodiments, H can be 10mm, 15mm, 20mm, etc.

[0040] As a specific implementation, the rubber outlet pipe 12 is provided with a stainless steel pagoda joint, which has good sealing and corrosion resistance, and can be connected to the rubber supply pipeline through a quick-connect chuck, which is convenient for installation.

[0041] Continue to refer to Figure 2A slope structure 13 inclined toward the glue outlet pipe 12 is provided at the bottom of the storage device 1. The slope structure 13 allows the glue to flow along the slope toward the glue outlet pipe 12, thereby accelerating the flow rate of the glue and improving the efficiency of the glue flowing into the glue supply pipeline. At the same time, it can also reduce the glue residue at the bottom of the storage space 11 and save costs.

[0042] As a preferred solution, the angle between the slope of the slope structure 13 and the bottom surface of the storage device 1 is defined as A, wherein 15°≤A≤30°. This setting can ensure that the glue has good fluidity, and can also reasonably control the size of the storage space 11 to ensure the space utilization of the storage device 1. In some embodiments, A is 15°. In some other embodiments, A can also be set to 20°, 25° or 30°, etc.

[0043] It should be noted that, since the glue usually contains granular fillers, sedimentation and stratification of granular fillers are likely to occur in the storage device 1 that is used for a long time, and the storage device 1 needs to be cleaned regularly. Therefore, the glue supply pipeline is also provided with an installation valve 4, which is connected between the storage device 1 and the control valve 3. The installation valve 4 can also open and close the glue supply pipeline, and the installation valve 4 can be detachably connected to the control valve 3. After closing the installation valve 4, the glue in the storage device 1 can no longer flow to the control valve 3. At this time, the installation valve 4 can be disassembled between the control valve 3 to separate the storage device 1 from the glue supply pipeline, which is convenient for cleaning the storage device 1 and prevents the residual glue in the storage device 1 from flowing out and polluting the working space during cleaning.

[0044] Specifically, continue to refer to Figure 1 , the first glue supply pipeline is provided with a first control valve 31 and a first installation valve 41, and the second glue supply pipeline is provided with a second control valve 32 and a second installation valve 42. When preparing to clean the first storage device 14, close the first control valve 31 and the first installation valve 41, separate the first installation valve 41 from the first control valve 31, so that the first storage device 14 can be separated from the first glue supply pipeline, which is convenient for cleaning the first storage device 14. After cleaning, reconnect the first installation valve 41 to the first control valve 31.

[0045] In some embodiments, the control valve 3 and the installation valve 4 are both ball valves, which have high structural strength and long service life; of course, in some other embodiments, the control valve 3 and the installation valve 4 can also use valve bodies such as gate valves, butterfly valves and plug valves. Preferably, the control valve 3 and the installation valve 4 are connected by a quick-connect chuck for easy disassembly and assembly.

[0046] Furthermore, the coating machine glue supply system also includes a multi-way connector 7, which is used to connect the main glue supply pipeline and all the glue supply branch pipelines. In this embodiment, the multi-way connector 7 is a three-way connector, and the three interfaces of the three-way connector are respectively connected to the first glue supply branch pipeline, the second glue supply branch pipeline and the main glue supply pipeline. In some other embodiments, a multi-way connector 7 with different numbers of interfaces can be adaptively selected according to the number of glue supply branch pipelines.

[0047] In some embodiments, the glue supply pump 2 is configured as a gear pump, which can realize timed and quantitative glue supply. In some other embodiments, the glue supply pump 2 can also be configured as a driving device such as a diaphragm pump, a piston pump, etc.

[0048] Furthermore, the main glue supply line is also provided with a filter device 5, which can filter out larger particle fillers in the main glue supply line to ensure the quality of the glue flowing out of the glue supply system of the coating machine. The filter device 5 can be set as a filter net, filter cotton, etc. In some embodiments, the filter device 5 is connected to the front end of the glue supply pump 2 in the direction of glue flow, which can reduce the adverse effects of the particle fillers in the glue on the glue supply pump 2. In some other embodiments, the filter device 5 is connected to the rear end of the glue supply pump 2 in the direction of glue flow, which can filter the particle fillers flowing out of the glue supply pump 2 to ensure the quality of the glue flowing out in the end.

[0049] Furthermore, a pressure detection element 6 is also provided in the main glue supply line. The pressure detection element 6 is connected to the filter device 5. The pressure detection element 6 is used to detect the pressure of the glue in the filter device 5. When the pressure value reaches a certain level, it means that the glue in the filter device 5 is difficult to flow. At this time, the filter device 5 needs to be cleaned or replaced.

[0050] Furthermore, the coating machine glue supply system also includes a connecting pipe assembly 8, which includes a plurality of connecting pipes, and the connecting pipes are used to connect various components in the coating machine glue supply system, wherein some connecting pipes constitute the main glue supply line, and the other part of the connecting pipes constitute the branch glue supply line. Specifically, the branch glue supply line includes a first connecting pipe 81 and a second connecting pipe 82, wherein the first connecting pipe 81 is connected between the installation valve 4 and the storage device 1, and the second connecting pipe 82 is connected between the control valve 3 and the multi-way connector 7; the main glue supply line includes a third connecting pipe 83, a fourth connecting pipe 84 and a fifth connecting pipe 85, wherein the third connecting pipe 83 is connected between the multi-way connector 7 and the glue supply pump 2, the fourth connecting pipe 84 is connected between the glue supply pump 2 and the filter device 5, and the fifth connecting pipe 85 is connected to the rear end of the filter device 5. In some embodiments, the connecting pipe is a rubber hose, and stainless steel pagoda joints are installed at both ends of the connecting pipe, and the stainless steel pagoda joint and the rubber hose are clamped by a clamp to facilitate connection with other components.

[0051] It should be noted that, since the glue contains volatile solvents, when the glue is stored in the storage device 1 for a long time, the solvent evaporates, causing the viscosity of the glue to increase, affecting the quality of the glue. By using the coating machine glue supply system proposed by the utility model, the storage amount of glue in each storage device 1 can be controlled to ensure that the glue in each storage device 1 can be used up within a certain period of time, the use time of the glue can be controlled, the quality of the glue can be ensured, and the production cost can be saved.

[0052] The utility model also provides a coating machine, including the coating machine glue supply system and a coating unit, the outlet of the glue supply main line is connected to the coating unit, and the coating machine glue supply system can supply glue to the coating unit. The coating machine can continuously and stably supply glue during coating, ensuring the quality and efficiency of the glue output of the coating machine.

[0053] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. The glue supply system of the coating machine is characterized by: include: At least two storage devices (1), each of the storage devices (1) being provided with a storage space (11) for storing glue, the storage device (1) comprising a glue outlet pipe (12), the glue outlet pipe (12) being arranged at the bottom of the storage device (1) and being connected to the storage space (11); A main glue supply line, on which a glue supply pump (2) is arranged; At least two glue supply sub-pipelines are provided on each of the glue supply sub-pipelines, and the control valve (3) is capable of opening and closing the glue supply sub-pipeline. One end of each of the glue supply sub-pipelines is connected to the glue outlet pipe (12) of a corresponding storage device (1), and the other end of each of the glue supply sub-pipelines is connected to the glue supply main pipeline.

2. The glue supply system for a coating machine according to claim 1, characterized in that: An installation valve (4) is also provided on the glue supply pipeline, and the installation valve (4) is connected between the storage device (1) and the control valve (3).

3. The glue supply system for a coating machine according to claim 2, characterized in that: The installation valve (4) is detachably connected to the control valve (3).

4. The glue supply system for a coating machine according to claim 1, characterized in that: The glue outlet pipe (12) is arranged at the bottom of the side wall of the storage device (1).

5. The glue supply system for a coating machine according to claim 4, characterized in that: The distance between the rubber outlet pipe (12) and the bottom surface of the storage device (1) in the height direction is H, wherein 5 mm ≤ H ≤ 20 mm.

6. The glue supply system for a coating machine according to claim 4 or 5, characterized in that: The bottom of the storage space (11) is provided with a slope structure (13) inclined toward the rubber outlet pipe (12).

7. The glue supply system for a coating machine according to claim 6, characterized in that: The included angle between the slope of the slope structure (13) and the bottom surface of the storage device (1) is A, wherein 15°≤A≤30°.

8. The glue supply system for a coating machine according to claim 1, characterized in that: A filtering device (5) is also arranged on the main glue supply line.

9. The glue supply system for a coating machine according to claim 8, characterized in that: The main glue supply line is also provided with a pressure detection element (6), the pressure detection element (6) is connected to the filtering device (5), and the pressure detection element (6) is used to detect the pressure of the glue in the filtering device (5).

10. A coating machine, comprising a coating unit, characterized in that It comprises the glue supply system of the coating machine according to any one of claims 1 to 9, wherein the outlet of the main glue supply line is connected to the coating unit.

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