Automatic cleaning station for hot melt adhesive coating equipment

Abstract

The utility model discloses an automatic cleaning station for hot melt adhesive coating equipment, which relates to the technical field of auxiliary appliances of patch production equipment and comprises a control system, a second joint, a first joint, a first box body, a second box body, a third box body, a power device, a waste liquid box and a pipeline network, heating devices are arranged on the first box body and the second box body; the pipeline network enables the external air source and the hot melt adhesive coating equipment to form a forward passage and a reverse passage, so that the first box body, the hot melt adhesive coating equipment and the power device form a circulation loop; the external air source, the power device, the hot melt adhesive coating equipment and the first box body form a forward path; the second box body, the hot melt adhesive coating equipment and the power device form a circulation loop; the external air source, the power device, the second box body and the hot melt adhesive coating equipment form a forward path; and the power device, the third box body and the hot melt adhesive coating equipment form a forward path.

Description

Technical Field

[0001] The utility model relates to the technical field of auxiliary tools for patch production equipment, in particular to an automatic cleaning station for hot melt adhesive coating equipment. Background Art

[0002] During the patch production process, the coil needs to be coated with glue using hot melt adhesive coating equipment. Figure 1 , hot melt adhesive gluing equipment 100 includes a gluing head 102, a glue delivery pipe 104, a glue pump 103 and a glue pot 101. In the process of gluing, power is provided by the glue pump, the colloid in the glue pot is transported to the gluing head by the glue delivery pipe, and glue is applied. After producing a batch of patches, before producing the next batch of patches, it is necessary to clean the hot melt adhesive gluing equipment. At present, when the hot melt adhesive gluing equipment is cleaned, what is adopted is the method for manual cleaning, that is, the gluing head is disassembled, the glue pump is opened, the glue pot is opened, and the glue delivery pipe is removed and cleaned respectively, the disassembly and assembly of the gluing head is relatively loaded down with trivial details, and consumes manpower and material resources, and cleaning efficiency is relatively low. The above problems urgently need those skilled in the art to solve. Utility Model Content

[0003] The purpose of the utility model is to provide an automatic cleaning station for hot melt adhesive coating equipment, which can automatically clean the hot melt adhesive coating equipment without disassembling it, thereby reducing manpower consumption and improving cleaning efficiency.

[0004] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0005] An automatic cleaning station for hot melt glue coating equipment, comprising: a control system, a second connector for connecting to a glue coating head of the hot melt glue coating equipment, a first connector for connecting to a glue tank of the hot melt glue coating equipment, a first box for holding a first cleaning liquid, a second box for holding a second cleaning liquid, a third box for holding a third cleaning liquid, a power device for providing power for fluid flow, a waste liquid tank, and a pipeline network for connecting an external air source, the first connector, the second connector, the first box, the second box, the third box, the waste liquid tank, and the power device; the first box and the second box are both provided with a heating device; the The pipeline network enables the external air source and the hot melt glue coating equipment to form a forward path and a reverse path, so that the first box, the hot melt glue coating equipment and the power device form a circulation loop; the external air source, the power device, the hot melt glue coating equipment and the first box form a forward path; the second box, the hot melt glue coating equipment and the power device form a circulation loop; the external air source, the power device, the second box and the hot melt glue coating equipment form a forward path; the power device, the third box and the hot melt glue coating equipment form a forward path; the forward path is a path flowing from the glue tank to the glue coating head, and the reverse path is a path flowing from the glue coating head to the glue tank.

[0006] Optionally, the power device that provides power for the first cleaning liquid, the second cleaning liquid and the third cleaning liquid is a pump; or, the power device that provides power for the first cleaning liquid and the second cleaning liquid is a pump, and the power device that provides power for the third cleaning liquid is an external air source.

[0007] Optionally, the first cleaning liquid is paraffin or edible oil, the second cleaning liquid is a degreasing agent, and the third cleaning liquid is water.

[0008] Optionally, the power device for providing power for the first cleaning liquid and the second cleaning liquid includes a first pump and a second pump that can rotate forward and reverse; the power device for providing power for the third cleaning liquid is an external air source; the pipeline network includes: a first three-way valve, a second three-way valve, a third three-way valve, a fourth three-way valve, a fifty-first three-way valve, a fifty-second three-way valve, a sixth three-way valve, a seventy-first three-way valve, a seventy-second valve, and an eighth three-way valve, the fifty-first three-way valve and the fifty-second three-way valve are linked, and the seventy-first three-way valve and the seventy-second valve are linked; the first interface of the first three-way valve, the second connector, and the first interface of the first pump are connected through the second three-way valve; the third interface of the first three-way valve is used to be connected to an external air source, and the second interface of the first three-way valve is open; the second interface of the first pump, the first interface of the first box, and the first interface of the second box are connected through the fifth The twelve three-way valves are connected, the first interface of the fourth three-way valve, the first interface of the sixth three-way valve, and the first interface of the second pump are connected through the fifty-first three-way valve; the second interface of the fourth three-way valve is connected to the second interface of the first box, and the third interface of the fourth three-way valve is connected to the external gas source; the second interface of the sixth three-way valve is connected to the second interface of the second box, and the third interface of the sixth three-way valve is connected to the external gas source; the second interface of the second pump, the first interface of the seventy-first three-way valve and the first connector are connected through the third three-way valve; the external gas source, the third interface of the seventy-first three-way valve and the first interface of the third box are connected through the eighth three-way valve; the second interface of the seventy-first three-way valve is open; the seventy-second valve is used to connect the external gas source and the second interface of the third box.

[0009] Optionally, the seventy-second valve is a three-way valve, the first interface of the seventy-second valve is connected to the second interface of the third box, the second interface of the seventy-second valve is closed, and the third interface of the seventy-second valve is connected to the external gas source.

[0010] Optionally, the first joint is a spray head that is driven by fluid to rotate and spray.

[0011] Optionally, an exhaust gas treatment box is further included, and the second interface of the seventy-first three-way valve and the second interface of the first three-way valve are both connected to the exhaust gas treatment box.

[0012] In the technical solution of the present utility model, a control system, a second connector for connecting to the gluing head of the hot melt glue coating device, a first connector for connecting to the glue tank of the hot melt glue coating device, a first box for holding a first cleaning liquid, a second box for holding a second cleaning liquid, a third box for holding a third cleaning liquid, a power device for providing power for fluid flow, and a pipeline network for connecting an external air source, the first connector, the second connector, the first box, the second box, the third box, and the power device are provided. The control system can be used to set the pipeline network to the desired path and automatically clean the hot melt glue coating device multiple times. There is no need to disassemble the gluing head and gluing pump and manually scrub each component, which improves cleaning efficiency and reduces manpower consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 Schematic diagram of an automatic cleaning station for hot melt adhesive dispensing equipment.

[0014] In the figure, 1. first three-way valve; 2. second three-way valve; 3. third three-way valve; 4. fourth three-way valve; 6. sixth three-way valve; 8. eighth three-way valve; 9. first box; 10. second box; 11. third box; 12. waste liquid tank; 13. first connector; 14. second connector; 15. first pump; 16. second pump; 51. fifty-first three-way valve; 52. fifty-second three-way valve; 71. seventy-first three-way valve; 72. seventy-second valve; 100. hot melt adhesive coating equipment; 101. glue tank; 102. glue coating head; 103. glue coating pump; 104. glue delivery hose. DETAILED DESCRIPTION

[0015] Exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements, unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all possible embodiments consistent with the present invention. Rather, they are merely examples of devices or methods consistent with certain aspects of the present invention.

[0016] To make the purpose, technical solution, and advantages of the present invention more clear, the technical solution of the present invention will be described in detail below. Obviously, the embodiments described are only some of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0017] The following embodiments are described with reference to the accompanying drawings. The embodiments described below do not limit the scope of the utility model as set forth in the claims. Furthermore, the entire contents of the configurations shown in the following embodiments are not necessarily required to serve as solutions to the utility model as set forth in the claims.

[0018] See also Figure 1 The utility model provides an automatic cleaning station for hot melt glue coating equipment, including: a control system, and the valves in the pipeline network are solenoid valves that are communicatively connected to the control system. When the power device does not include an external air source, for example, when the power device is a pump, the power device is communicatively connected to the control system, and the control system is used to control the operation of the power device and the opening and closing of each valve in the pipeline network to form a required passage. The second connector 14 is used to connect to the glue coating head 102 of the hot melt glue coating equipment 100; the first connector 13 is used to connect to the glue tank 101; the first box 9 is used to hold the first cleaning liquid; the second box 10 is used to hold the second cleaning liquid; the first box 9 and the second box 10 are both provided with a heating device; the third box 11 is used to hold the third cleaning liquid; the power device is used to provide power for the flow of the fluid; and the waste liquid tank 12 is used to hold the waste liquid generated during the flushing process. The pipeline network is used to connect the first connector 13, the second connector 14, the power unit, the first housing 9, the second housing 10, and the third housing 11, as well as to connect to an external air source, thereby forming the required pathways after connection to the hot melt adhesive coating device 100. Under the control of the control system, the pipeline network can form the following pathways: a forward pathway and a reverse pathway formed by the external air source and the hot melt adhesive coating device 100; the forward pathway is the pathway for air to flow from the glue tank 101 to the coating head 102; the reverse pathway is the pathway for air to flow from the coating head 102 to the glue tank 101. The first box 9, the hot melt glue coating device 100 and the power device form a circulation loop; the external air source, the power device, the hot melt glue coating device 100 and the first box 9 form a forward path; the second box 10, the hot melt glue coating device 100 and the power device form a circulation loop; the external air source, the power device, the second box 10 and the hot melt glue coating device 100 form a forward path; the power device, the third box 11 and the hot melt glue coating device 100 form a forward path. Among them, there can be one or more external air sources, which can be the same air source or different air sources. For example, when the external air source and the hot melt glue coating device form a reverse path, the pressure of the external air source can be larger, and the pressure of other external air sources can be smaller.

[0019] When this automatic cleaning station is cleaning, refer to Figure 1Simply connect the second connector 14 to the glue applicator 102, the first connector 13 to the glue tank 101, and then connect the automatic cleaning station to an external air source. The control system creates the required pathways, flushing the hot melt adhesive applicator 100 with the first, second, and third cleaning liquids, and then using the external air source to purge the hot melt adhesive applicator 100. This eliminates the need to disassemble the glue applicator 102, glue pump 103, or glue hose 104, and manually scrub each component. This reduces assembly and disassembly time, improves cleaning efficiency, and saves manpower and resources.

[0020] Alternatively, the power devices providing power for the first cleaning liquid, the second cleaning liquid and the third cleaning liquid may all be pumps, specifically gear pumps. Alternatively, the power devices providing power for the first cleaning liquid and the second cleaning liquid may be pumps, and the power device providing power for the third cleaning liquid may be an external air source.

[0021] Optionally, the first cleaning liquid is paraffin or edible oil, the second cleaning liquid is a degreasing agent, and the third cleaning liquid is water.

[0022] Alternatively, see Figure 1The power devices that provide power for the first and second cleaning fluids include a first pump 15 and a second pump 16 that can rotate forward and reverse. The power device that provides power for the third cleaning fluid is an external air source. The pipeline network includes pipes and valves, specifically: a first three-way valve 1, a second three-way valve 2, a third three-way valve 3, a fourth three-way valve 4, a fifty-first three-way valve 51, a fifty-second three-way valve 52, a sixth three-way valve 6, a seventy-first three-way valve 71, a seventy-second valve 72, and an eighth three-way valve 8. The fifty-first three-way valve 51 and the fifty-second three-way valve 52 are linked, and the seventy-first three-way valve 71 and the seventy-second valve 72 are linked. The first interface of the first three-way valve 1, the second connector 14, and the first interface of the first pump 15 are connected through the second three-way valve 2; the third interface of the first three-way valve 1 is used to be connected to an external gas source, and the second interface of the first three-way valve 1 is connected to the waste liquid tank 12; the second interface of the first pump 15, the first interface of the first box body 9, and the first interface of the second box body 10 are connected through the fifty-second three-way valve 52, the first interface of the fourth three-way valve 4, the first interface of the sixth three-way valve 6, and the first interface of the second pump 16 are connected through the fifty-first three-way valve 51; the second interface of the fourth three-way valve 4 is connected to the second interface of the first box body 9 The third interface of the fourth three-way valve 4 is connected to the external gas source; the second interface of the sixth three-way valve 6 is connected to the second interface of the second box 10, and the third interface of the sixth three-way valve 6 is connected to the external gas source; the second interface of the second pump 16, the first interface of the seventy-first three-way valve 71 and the first connector 13 are connected through the third three-way valve 3; the external gas source, the third interface of the seventy-first three-way valve 71 and the first interface of the third box 11 are connected through the eighth three-way valve 8; the second interface of the seventy-first three-way valve 71 is open; the seventy-second valve 72 is used to connect the external gas source and the second interface of the third box 11.

[0023] Optionally, the seventy-second valve 72 is a three-way valve, the first interface of the seventy-second valve 72 is connected to the second interface of the third box 11, the second interface of the seventy-second valve is closed, and the third interface of the seventy-second valve is connected to the external gas source.

[0024] So, see Figure 1 When the three-way valve in the figure is not powered, the first interface and the second interface are connected. That is, of the two ports corresponding to the broken line drawn in the three-way valve, the middle one is the first interface and the other one is the second interface. The port without the broken line is the third interface.

[0025] When the first three-way valve 1 is energized, a first passage is formed: the external gas source passes through the first three-way valve 1, the second three-way valve 2, the second connector 14, the glue head 102, the glue delivery pipe 104, the glue pump 103, the glue tank 101, the first connector 13, the third three-way valve 3, and the seventy-first three-way valve 71 in sequence, and is discharged from the second interface of the seventy-first three-way valve 71, forming a reverse passage.

[0026] When the second and third three-way valves 2 and 3 are energized, a second path is formed, which serves as a circulation loop. When the first and second pumps 15 and 16 rotate in reverse, the first cleaning liquid in the first tank 9 flows out of the first port, sequentially passing through the fifty-second three-way valve 52, the first pump 15, the second three-way valve 2, the second connector 14, the glue head 102, the glue delivery hose 104, the glue pump 103, the glue tank 101, the first connector 13, the third three-way valve 3, the second pump 16, the fifty-first three-way valve 51, and the fourth three-way valve 4, before flowing back to the first tank 9 through the second port, performing reverse cleaning of the hot melt adhesive coating equipment. Similarly, when the first and second pumps 15 and 16 rotate forward, the first cleaning liquid flows out of the second port and finally flows back to the first tank 9 through the first port, performing forward cleaning of the hot melt adhesive coating equipment.

[0027] When power is supplied to the second, third, and fourth three-way valves 2, 3, and 4, a third path is formed. The first and second pumps 15, 16 rotate forward, forming a forward path. The external air source passes through the fourth three-way valve 4, the fifty-first three-way valve 51, the second pump 16, the third three-way valve 3, the first connector 13, the glue tank 101, the glue pump 103, the glue delivery hose 104, the glue head 102, the second connector 14, the second three-way valve 2, the first pump 15, the fifty-second three-way valve 52, and finally enters the first housing 9 through the first interface. It should be noted that the first housing 9 is provided with an exhaust port.

[0028] When the second three-way valve 2, the third three-way valve 3, the fifty-first three-way valve 51, and the fifty-second three-way valve 52 are energized, a fourth path is formed, which serves as a circulation loop. When the first pump 15 and the second pump 16 rotate in reverse, the first cleaning liquid in the second tank 10 flows out of the first port, sequentially passing through the fifty-second three-way valve 52, the first pump 15, the second three-way valve 2, the second connector 14, the gluing head 102, the glue delivery hose 104, the gluing pump 103, the glue tank 101, the first connector 13, the third three-way valve 3, the second pump 16, the fifty-first three-way valve 51, and the sixth three-way valve 6, before flowing back into the second tank 10 through the second port, performing reverse cleaning of the hot melt adhesive gluing equipment. Similarly, when the first pump 15 and the second pump 16 rotate forward, the first cleaning liquid flows out of the second port and finally flows back into the second tank 10 from the first port, performing forward cleaning of the hot melt adhesive gluing equipment.

[0029] When power is supplied to the second three-way valve 2, the third three-way valve 3, the fifty-first three-way valve 51, the fifty-second three-way valve 52, and the sixth three-way valve 6, a fifth passage is formed. The first pump 15 and the second pump 16 rotate forward, forming a forward passage. The external air source passes through the sixth three-way valve 6, the fifty-first three-way valve 51, the second pump 16, the third three-way valve 3, the first connector 13, the glue tank 101, the glue pump 103, the glue delivery hose 104, the glue head 102, the second connector 14, the second three-way valve 2, the first pump 15, the fifty-second three-way valve 52, and enters the second housing 10 through the first interface. It should be noted that an exhaust port is provided on the second housing 10.

[0030] When the seventy-first three-way valve 71 and the seventy-second valve 72 are energized, a sixth passage is formed. The sixth passage is a forward passage. The external air source passes through the seventy-second valve 72 and enters the third box body 11 from the second interface, pressing the third cleaning liquid in the third box body 11 out from the second interface. The third cleaning liquid flows through the eighth three-way valve 8, the seventy-first three-way valve 71, the third three-way valve 3, the third three-way valve 3, the first connector 13, the glue tank 101, the glue pump 103, the glue delivery pipe 104, the glue head 102, the second connector 14, the second three-way valve 2, the first three-way valve 1, and flows out from the second interface of the first three-way valve 1, and specifically can flow into the waste liquid tank 12.

[0031] When the seventy-first three-way valve 71, the seventy-second valve 72 and the eighth three-way valve 8 are energized, a seventh passage is formed. The seventh passage is a forward passage. The external gas source flows through the eighth three-way valve 8, the seventy-first three-way valve 71, the third three-way valve 3, the third three-way valve 3, the first connector 13, the glue tank 101, the glue pump 103, the glue delivery hose 104, the glue head 102, the second connector 14, the second three-way valve 2, the first three-way valve 1, and flows out from the second interface of the first three-way valve 1.

[0032] Optionally, the first joint 13 is a spray head that is driven by fluid to rotate and spray. The first joint 13 is used to rinse the glue tank 101. The first joint 13 is set as a rotatable spray head, which can rinse the glue tank 101 more thoroughly.

[0033] Optionally, an exhaust gas treatment box is further included, and the second port of the seventy-first three-way valve 71 and the second port of the first three-way valve 1 are both connected to the exhaust gas treatment box. In this way, during reverse purge, the exhaust gas flows into the exhaust gas treatment box through the second port of the seventy-first three-way valve 71 for treatment, and during forward purge, the exhaust gas flows into the exhaust gas treatment box through the second port of the first three-way valve 1 for treatment.

[0034] See also Figure 1 , the cleaning method of this automatic cleaning station:

[0035] S101, connect the first connector 13 to the glue tank 101, connect the second connector 14 to the glue coating head 102, and then connect to an external air source.

[0036] At step S102, the control system first energizes the first three-way valve 1. The external air source then passes through the first three-way valve 1, the second three-way valve 2, the second connector 14, the glue applicator 102, the glue delivery hose 104, the glue pump 103, the glue tank 101, the first connector 13, the third three-way valve 3, and the seventy-first three-way valve 71, ultimately exiting the second port of the seventy-first three-way valve 71. Any remaining glue in the glue applicator 102, the glue delivery hose 104, and the glue pump 103 is then blown back into the glue tank 101, and the waste gas is discharged through the seventy-first three-way valve 71. This process can last for 300 seconds. If a large amount of glue remains in the glue tank 101, it can be removed.

[0037] S103: Power is supplied to the second and third three-way valves 2 and 3. First, the first and second pumps 15 and 16 are controlled to rotate in reverse, causing the first cleaning fluid within the first housing 9 to flow out of the first port, sequentially passing through the fifty-second three-way valve 52, the first pump 15, the second three-way valve 2, the second connector 14, the glue head 102, the glue delivery hose 104, the glue pump 103, the glue tank 101, the first connector 13, the third three-way valve 3, the second pump 16, the fifty-first three-way valve 51, and the fourth three-way valve 4. The fluid then flows back through the second port to the first housing 9, performing reverse cleaning of the hot melt adhesive coating equipment. This process can last for 1000 seconds. During this process, the first and second pumps 15 and 16 can be shut down 10 seconds in advance to prevent the subsequent reverse rotation of the pumps, which could cause a water hammer effect. The first and second pumps 15 and 16 are then controlled to rotate forward, causing the first cleaning fluid to flow out of the second port and finally back into the first housing 9 from the first port, performing forward cleaning of the hot melt adhesive coating equipment. This process can last for 1000 seconds, and the first pump and the second pump 16 are turned off 10 seconds in advance. The first cleaning liquid is preheated to 140-160 degrees Celsius.

[0038] S104: Power is supplied to the second three-way valve 2, the third three-way valve 3, and the fourth three-way valve 4. The first pump 15 and the second pump 16 are controlled to rotate forward. The external air source passes through the fourth three-way valve 4, the fifty-first three-way valve 51, the second pump 16, the third three-way valve 3, the first connector 13, the glue tank 101, the glue pump 103, the glue delivery hose 104, the glue head 102, the second connector 14, the second three-way valve 2, the first pump 15, and the fifty-second three-way valve 52, blowing the remaining first cleaning liquid back into the first housing 9 through the first interface.

[0039] S105: Power is supplied to the second three-way valve 2, the third three-way valve 3, the fifty-first three-way valve 51, and the fifty-second three-way valve 52. The first pump 15 and the second pump 16 are controlled to reverse direction. The second cleaning liquid in the second tank 10 flows out of the first port, sequentially passing through the fifty-second three-way valve 52, the first pump 15, the second three-way valve 2, the second connector 14, the gluing head 102, the glue delivery hose 104, the gluing pump 103, the glue tank 101, the first connector 13, the third three-way valve 3, the second pump 16, the fifty-first three-way valve 51, and the sixth three-way valve 6. The second cleaning liquid then flows back through the second port into the second tank 10, performing reverse cleaning of the hot melt adhesive gluing equipment. This process can last for 600 seconds, with the first pump 15 and the second pump 16 shutting off 10 seconds in advance. Then, the first pump 15 and the second pump 16 are controlled to rotate forward, and the second cleaning liquid flows out from the second interface of the second box 10, and finally flows back to the second box 10 from the first interface of the second box 10, thereby performing forward cleaning on the hot melt adhesive coating equipment. The second cleaning liquid is heated to 65-85 degrees Celsius.

[0040] S106: Power is supplied to the second three-way valve 2, the third three-way valve 3, the fifty-first three-way valve 51, the fifty-second three-way valve 52, and the sixth three-way valve 6. The first pump 15 and the second pump 16 are controlled to rotate forward. The external air source sequentially passes through the sixth three-way valve 6, the fifty-first three-way valve 51, the second pump 16, the third three-way valve 3, the first connector 13, the glue tank 101, the glue pump 103, the glue delivery hose 104, the glue head 102, the second connector 14, the second three-way valve 2, the first pump 15, and the fifty-second three-way valve 52, ultimately blowing the second cleaning liquid back into the second housing 10 through the first interface. This process can last for 600 seconds.

[0041] S107: Power is supplied to the seventy-first three-way valve 71 and the seventy-second valve 72. The external air source passes through the seventy-second valve 72 and enters the third housing 11 from the second port, forcing the third cleaning liquid in the third housing 11 out of the second port. The third cleaning liquid then flows sequentially through the eighth three-way valve 8, the seventy-first three-way valve 71, the third three-way valve 3, the third three-way valve 3, the first connector 13, the glue tank 101, the glue pump 103, the glue delivery hose 104, the glue head 102, the second connector 14, the second three-way valve 2, and the first three-way valve 1, exiting from the second port of the first three-way valve 1. Specifically, the third cleaning liquid may flow into the waste liquid tank 12. Forward flushing is performed using the third cleaning liquid. This process may last for 10 seconds. The third cleaning liquid may be water.

[0042] In step S108, power is supplied to the seventy-first three-way valve 71, the seventy-second valve 72, and the eighth three-way valve 8. The external air source flows sequentially through the eighth three-way valve 8, the seventy-first three-way valve 71, the third three-way valve 3, the third three-way valve 3, the first connector 13, the glue tank 101, the glue pump 103, the glue delivery hose 104, the glue application head 102, the second connector 14, the second three-way valve 2, and the first three-way valve 1, exiting from the second interface of the first three-way valve 1, performing a forward purge. This process can last for 30 seconds. Steps S107 and S108 are then performed alternately. That is, a 10-second water wash is performed first, followed by a 30-second air purge.

[0043] At step S109, the control system energizes the first three-way valve 1. The external air source flows sequentially through the first three-way valve 1, the second three-way valve 2, the second connector 14, the glue applicator 102, the glue delivery hose 104, the glue pump 103, the glue tank 101, the first connector 13, the third three-way valve 3, and the seventy-first three-way valve 71. Exhaust gas is discharged from the second port of the seventy-first three-way valve 71, flushing the hot melt adhesive applicator in reverse. This process can last for 300 seconds.

Claims

1. An automatic cleaning station for hot melt adhesive coating equipment, characterized in that: include: A control system, a second connector for connecting to the gluing head of the hot melt glue coating device, a first connector for connecting to the glue tank of the hot melt glue coating device, a first box for holding a first cleaning liquid, a second box for holding a second cleaning liquid, a third box for holding a third cleaning liquid, a power device for providing power for fluid flow, a waste liquid tank, and a pipeline network for connecting an external air source, the first connector, the second connector, the first box, the second box, the third box, the waste liquid tank and the power device; the first box and the second box are both provided with a heating device; the pipeline network connects the external air source and the The hot melt glue coating equipment forms a forward passage and a reverse passage, so that the first box, the hot melt glue coating equipment and the power device form a circulation loop; the external air source, the power device, the hot melt glue coating equipment and the first box form a forward passage; the second box, the hot melt glue coating equipment and the power device form a circulation loop; the external air source, the power device, the second box and the hot melt glue coating equipment form a forward passage; the power device, the third box and the hot melt glue coating equipment form a forward passage; the forward passage is a passage flowing from the glue tank to the glue coating head, and the reverse passage is a passage flowing from the glue coating head to the glue tank.

2. The automatic cleaning station for hot melt adhesive coating equipment according to claim 1, characterized in that: The power device that provides power for the first cleaning liquid, the second cleaning liquid and the third cleaning liquid is a pump; or the power device that provides power for the first cleaning liquid and the second cleaning liquid is a pump, and the power device that provides power for the third cleaning liquid is an external air source.

3. The automatic cleaning station for hot melt adhesive coating equipment according to claim 1, characterized in that: The first cleaning liquid is paraffin or edible oil, the second cleaning liquid is a degreasing agent, and the third cleaning liquid is water.

4. The automatic cleaning station for hot melt adhesive coating equipment according to claim 2, characterized in that: The power device for providing power for the first cleaning liquid and the second cleaning liquid includes a first pump and a second pump that can rotate forward and reverse; the power device for providing power for the third cleaning liquid is an external air source; the pipeline network includes: a first three-way valve, a second three-way valve, a third three-way valve, a fourth three-way valve, a fifty-first three-way valve, a fifty-second three-way valve, a sixth three-way valve, a seventy-first three-way valve, a seventy-second valve, and an eighth three-way valve, the fifty-first three-way valve and the fifty-second three-way valve are linked, and the seventy-first three-way valve and the seventy-second valve are linked; the first interface of the first three-way valve, the second connector, and the first interface of the first pump are connected through the second three-way valve; the third interface of the first three-way valve is used to be connected to an external air source, and the second interface of the first three-way valve is open; the second interface of the first pump, the first interface of the first box, and the first interface of the second box are connected through the fifty-second The three-way valves are connected, and the first interface of the fourth three-way valve, the first interface of the sixth three-way valve, and the first interface of the second pump are connected through the fifty-first three-way valve; the second interface of the fourth three-way valve is connected to the second interface of the first box, and the third interface of the fourth three-way valve is connected to the external gas source; the second interface of the sixth three-way valve is connected to the second interface of the second box, and the third interface of the sixth three-way valve is connected to the external gas source; the second interface of the second pump, the first interface of the seventy-first three-way valve and the first connector are connected through the third three-way valve; the external gas source, the third interface of the seventy-first three-way valve and the first interface of the third box are connected through the eighth three-way valve; the second interface of the seventy-first three-way valve is open; the seventy-second valve is used to connect the external gas source and the second interface of the third box.

5. The automatic cleaning station for hot melt adhesive coating equipment according to claim 4, characterized in that: The seventy-second valve is a three-way valve, the first interface of the seventy-second valve is connected to the second interface of the third box, the second interface of the seventy-second valve is closed, and the third interface of the seventy-second valve is connected to the external gas source.

6. The automatic cleaning station for hot melt adhesive coating equipment according to claim 1, characterized in that: The first joint is a spray head that is driven by fluid to rotate and spray.

7. The automatic cleaning station for hot melt adhesive coating equipment according to claim 4, characterized in that: It also includes an exhaust gas treatment box, and the second interface of the seventy-first three-way valve and the second interface of the first three-way valve are both connected to the exhaust gas treatment box.

Images