A sealant delivery system and a method for cleaning residual glue

Abstract

The present invention discloses a sealant delivery system and a residual glue cleaning method, which include a glue suction component, a glue delivery pipeline and a glue storage barrel. The glue suction component includes a plurality of glue suction pumps arranged in sequence along the left and right directions, and the glue suction pump at the right end of the plurality of glue suction pumps is a standby glue pump; the glue delivery pipeline includes a glue delivery branch and a glue delivery main road arranged in sequence from front to back and connected to each other, the glue delivery main road can be connected to the outlets of the plurality of glue suction pumps, and the glue delivery branch includes two glue delivery branch pipes arranged in parallel; the glue storage barrel is arranged on the glue delivery main road and is located on the right side of the standby glue pump to store sealant, the inlet end of the glue storage barrel is connected to the glue delivery main road, and the outlet end of the glue storage barrel is connected to the two glue delivery branch pipes. By making the two glue delivery branch pipes share the glue suction component and the glue delivery main road, the glue coating operations of the first glue coating processing area and the second glue coating processing area can be simultaneously met, so that the sealant delivery system is integrated, the repeated setting of the sealant delivery system is avoided, and the investment cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of sealant transportation, and particularly relates to a sealant transportation system and a method for cleaning residual glue. Background Art

[0002] In order to make the automobile body have good sealing performance, rust prevention performance, durability and comfort, during the automobile production and processing process, it is necessary to coat sealant on the joint surfaces of the sheet metals that make up the body. The sealant required for sealing the welds of the automobile body sheet metals needs to be transported and supplied to the corresponding glue application line through a glue transportation system, so that the glue application operation of the automobile body sheet metals can be carried out. Since there are many automobile body sheet metals and the glue application processing cannot be completed in the same glue application area, it leads to the repeated layout of the sealant transportation system, increasing the equipment investment cost. Summary of the Invention

[0003] The main object of the present invention is to propose a sealant transportation system and a method for cleaning residual glue, aiming to solve the problem that the repeated layout of the glue transportation system of the existing automobile body sheet metal glue application line leads to high investment cost.

[0004] To achieve the above object, the present invention proposes a sealant transportation system for transporting sealant to a first glue application processing area and a second glue application processing area of an automobile body. The sealant transportation system includes:

[0005] A glue suction assembly, including a plurality of glue suction pumps arranged at intervals in sequence along the left-right direction. The glue suction pump at the right end among the plurality of glue suction pumps is a spare glue pump;

[0006] A glue transportation pipeline, including a glue transportation branch and a glue transportation main pipeline arranged in sequence from front to back and communicating with each other. The glue transportation main pipeline can be connected to the outlets of the plurality of glue suction pumps. The glue transportation branch includes two parallel glue transportation branch pipes; and,

[0007] A glue storage barrel, which is arranged on the glue transportation main pipeline and is located on the right side of the spare glue pump for storing sealant. The inlet end of the glue storage barrel is connected to the glue transportation main pipeline, and the outlet end of the glue storage barrel is connected to the two glue transportation branch pipes;

[0008] Wherein, the plurality of glue suction pumps introduce sealant into the glue transportation branch, and the sealant flows into the glue storage barrel from the glue transportation branch, so that the two glue transportation branch pipes correspondingly transport the sealant to the first glue application processing area and the second glue application processing area.

[0009] Optionally, the outside of the glue transportation main pipeline is wrapped with a tracing heating tape, and the tracing heating tape is located between the spare glue pump and the glue storage barrel for heating the sealant in the glue transportation main pipeline.

[0010] Optionally, a filter is provided in the main sealant delivery path, and the filter is located between the standby sealant pump and the sealant storage tank, so that the sealant flows into the sealant storage tank after passing through the filter.

[0011] Optionally, a stirrer is provided in the sealant storage tank.

[0012] Optionally, a liquid level gauge is provided in the sealant storage tank for monitoring the height of the sealant in the sealant storage tank.

[0013] Optionally, a pressurization group is provided on the pipeline of each sealant delivery branch pipe. The pressurization group includes a plurality of pressurization pumps arranged at intervals in the left-right direction, and the plurality of pressurization pumps are used to pressurize the sealant in the corresponding sealant delivery branch pipe.

[0014] Optionally, the pressurization pump at the right end in the pressurization group is the first pressurization pump;

[0015] Each sealant delivery branch pipe is provided with a pressure relief valve, and the pressure relief valve is located on the side of the first pressurization pump close to the sealant storage tank.

[0016] The present invention also provides a method for cleaning residual glue in a sealant delivery system, including the following steps:

[0017] Discharging the remaining glue: Open a plurality of the glue suction pumps and conduct the glue delivery pipeline to discharge the remaining sealant in the sealant delivery system, and collect the first glue sample;

[0018] Filling with cleaning agent: Pour the cleaning agent into the sealant delivery system until the glue delivery pipeline and the sealant storage tank are filled;

[0019] Removing residual glue: Let the cleaning agent stand in the glue delivery pipeline and the sealant storage tank until a preset standing time is reached, so that the residual glue layer adhering to the glue delivery pipeline and the sealant storage tank falls off;

[0020] Discharging the cleaning agent: Pour the first glue sample into the glue delivery pipeline and the sealant storage tank to squeeze out the cleaning agent containing the residual glue layer in the glue delivery pipeline and the sealant storage tank, and make part of the first glue sample discharged, and collect the second glue sample;

[0021] Confirming the glue sample: Detect the viscosity value of the collected second glue sample, and compare the viscosity value with a preset viscosity to determine whether the residual glue cleaning is completed.

[0022] Optionally, a stirrer is provided in the sealant storage tank;

[0023] Before the step of "discharging the cleaning agent: Pour the first glue sample into the glue delivery pipeline and the sealant storage tank to squeeze out the cleaning agent containing the residual glue layer in the glue delivery pipeline and the sealant storage tank, and make part of the first glue sample discharged, and collect the second glue sample", the following is also included:

[0024] Drive the agitator to work to agitate the cleaning agent in the glue storage barrel until all the residual glue layers on the wall surface of the glue storage barrel fall off.

[0025] Optionally, in the step of "confirming the glue sample: detecting the viscosity value of the collected second glue sample, comparing the viscosity value with a preset viscosity to determine whether the residual glue cleaning is completed":

[0026] When the viscosity value is less than the preset viscosity, continue to pour the first glue sample into the sealant delivery system until the viscosity value is greater than the preset viscosity;

[0027] When the viscosity value is greater than the preset viscosity, stop pouring the first glue sample into the sealant delivery system, and the residual glue cleaning is completed.

[0028] In the technical solution of the present invention, the sealant delivery system includes a glue suction assembly, a glue delivery pipeline, and a glue storage barrel. The glue suction assembly includes a plurality of glue suction pumps arranged at intervals in the left-right direction. The glue suction pump at the right end among the plurality of glue suction pumps is a spare glue pump; the glue delivery pipeline includes a glue delivery branch and a glue delivery main road arranged in sequence from front to back and communicating with each other. The glue delivery main road can communicate with the outlets of the plurality of glue suction pumps. The glue delivery branch includes two parallel glue delivery branches; the glue storage barrel is arranged on the glue delivery main road and is located on the right side of the spare glue pump for storing sealant. The inlet end of the glue storage barrel communicates with the glue delivery main road, and the outlet end of the glue storage barrel communicates with the two glue delivery branches; wherein, the plurality of glue suction pumps introduce the sealant into the glue delivery branch, and the sealant flows from the glue delivery branch into the glue storage barrel, so that the two glue delivery branches correspondingly deliver the sealant to the first glue coating processing area and the second glue coating processing area. By making the two glue delivery branches share the glue suction assembly and the glue delivery main road to simultaneously meet the glue coating operations of the first glue coating processing area and the second glue coating processing area, the sealant delivery system is integrated, avoiding the repeated setting of the sealant delivery system and reducing the input cost. Description of the Drawings

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on the structures shown in these drawings without creative efforts.

[0030] Figure 1 It is a structural schematic diagram of an embodiment of the sealant delivery system provided by the present invention;

[0031] Figure 2Schematic flow diagram of an embodiment of the method for cleaning residual glue of the sealant delivery system provided by the present invention.

[0032] Description of reference numerals in the drawings:

[0033] Label Name Label Name 100 Sealant conveying system 4 Tracing heater 1 Glue sucking component 5 Filter 11 Glue sucking pump 6 Pressurizing group 2 Glue conveying pipeline 61 Pressurizing pump 21 Glue conveying branch 7 Pressure relief valve 22 Main glue conveying path 200 First glue coating processing area 221 Glue conveying branch pipe 300 Second glue coating processing area 3 Glue storage barrel

[0034] The realization of the object of the present invention, functional features and advantages will be further described in conjunction with the embodiments with reference to the drawings. Specific embodiments

[0035] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0036] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention, the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.

[0037] In addition, if there are descriptions such as "first" and "second" in the embodiments of the present invention, the descriptions of "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or a solution that satisfies both A and B at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0038] In order to make the automobile body have good sealing, rust prevention, durability and comfort, during the automobile production and processing process, it is necessary to coat sealant on the joint surfaces of the sheet metals that make up the body, and the sealant required for sealing the welds of the automobile body sheet metals needs to be transported and supplied to the corresponding glue application line through a glue delivery system, so that the glue application operation of the automobile body sheet metals can be carried out. Since there are many automobile body sheet metal parts and the glue application process cannot be completed in the same glue application area, it leads to the repeated layout of the sealant delivery system, increasing the equipment investment cost.

[0039] In view of this, the present invention provides a sealant conveying system. By sharing the glue sucking assembly and the main glue conveying path between the two glue conveying branch pipes, the glue application operations in the first glue application processing area and the second glue application processing area can be satisfied simultaneously, making the sealant conveying system integrated, avoiding repeated setting of the sealant conveying system, and reducing the input cost. As Figure 1 shown, it is an embodiment of the sealant conveying system provided by the present invention.

[0040] As Figure 1 shown, the sealant conveying system 100 proposed by the present invention includes a glue sucking assembly 1, a glue conveying pipeline 2, and a glue storage barrel 3. The glue sucking assembly 1 includes a plurality of glue sucking pumps 11 arranged at intervals in the left-right direction in sequence. The glue sucking pump 11 at the right end among the plurality of glue sucking pumps 11 is a standby glue pump; the glue conveying pipeline 2 includes a glue conveying branch 21 and a main glue conveying path 22 arranged in sequence from front to back and communicating with each other. The main glue conveying path 22 can communicate with the outlets of the plurality of glue sucking pumps 11. The glue conveying branch 21 includes two parallel glue conveying branch pipes 221; the glue storage barrel 3 is arranged on the main glue conveying path 22 and is located on the right side of the standby glue pump for storing sealant. The inlet end of the glue storage barrel 3 is communicated with the main glue conveying path 22, and the outlet end of the glue storage barrel 3 is communicated with the two glue conveying branch pipes 221; wherein, the plurality of glue sucking pumps 11 introduce the sealant into the glue conveying branch 21, and the sealant flows into the glue storage barrel 3 from the glue conveying branch 21, so that the two glue conveying branch pipes 221 convey the sealant to the first glue application processing area 200 and the second glue application processing area 300 correspondingly.

[0041] In the technical solution of the present invention, the sealant delivery system 100 includes a glue suction assembly 1, a glue delivery pipeline 2, and a glue storage barrel 3. The glue suction assembly 1 includes a plurality of glue suction pumps 11 arranged at intervals in the left-right direction. The glue suction pump 11 at the right end among the plurality of glue suction pumps 11 is a spare glue pump. The glue delivery pipeline 2 includes a glue delivery branch 21 and a glue delivery main path 22 arranged in sequence from front to back and communicating with each other. The glue delivery main path 22 can communicate with the outlets of the plurality of glue suction pumps 11. The glue delivery branch 21 includes two parallel glue delivery branches 221. The glue storage barrel 3 is arranged on the glue delivery main path 22 and is located on the right side of the spare glue pump for storing sealant. The inlet end of the glue storage barrel 3 communicates with the glue delivery main path 22, and the outlet end of the glue storage barrel 3 communicates with the two glue delivery branches 221. Among them, the plurality of glue suction pumps 11 introduce sealant into the glue delivery branch 21, and the sealant flows into the glue storage barrel 3 from the glue delivery branch 21, so that the two glue delivery branches 221 correspondingly deliver the sealant to the first glue application processing area 200 and the second glue application processing area 300. By making the two glue delivery branches 221 share the glue suction assembly 1 and the glue delivery main path 22 to simultaneously meet the glue application operations of the first glue application processing area 200 and the second glue application processing area 300, the sealant delivery system 100 is integrated, avoiding repeated setting of the sealant delivery system 100 and reducing the input cost.

[0042] In this embodiment, as Figure 1 shown, the outside of the glue delivery main path 22 is wrapped with a heat tracing tape 4. The heat tracing tape 4 is located between the spare glue pump and the glue storage barrel 3 for heating the sealant in the glue delivery main path 22. Thus, the sealant in the glue delivery main path 22 can be heated by the heat tracing tape 4 to change the viscosity of the sealant in the glue delivery main path 22. Usually, the temperature of the sealant is controlled at 25-35 degrees, so as to ensure the glue outlet speed of the glue delivery main path 22 under a certain pressure. For better control of the temperature of the sealant, a temperature control instrument and a temperature probe are usually provided. The temperature control instrument is electrically connected to the heat tracing tape 4 and the temperature probe. The temperature probe is used to collect the temperature of the glue delivery main path 22 and transmit the temperature data to the temperature control instrument. The temperature control instrument controls the start and stop of the heat tracing tape 4 according to the received temperature data, and further controls the temperature of the sealant at 25-35 degrees. It should be noted that the temperature control instrument and the temperature probe are conventional components in the art, and appropriate models can be selected according to actual needs.

[0043] In this embodiment, as Figure 1As shown, a filter 5 is provided in the main sealant delivery path 22, and the filter 5 is located between the standby sealant pump and the sealant storage tank 3, so that the sealant flows into the sealant storage tank 3 after passing through the filter 5. In this way, the sealant in the main sealant delivery path 22 can be filtered.

[0044] In this embodiment, a stirrer is provided in the sealant storage tank 3. In this way, when cleaning the residual sealant in the sealant storage tank 3, the stirrer stirs the cleaning agent in the sealant storage tank 3 to accelerate the shedding of the residual sealant on the wall surface of the sealant storage tank 3 and improve the cleaning efficiency.

[0045] In this embodiment, a liquid level gauge is provided in the sealant storage tank 3 for monitoring the height of the sealant in the sealant storage tank 3. To enable the staff to discover and handle it more promptly when the height of the sealant in the sealant storage tank 3 is abnormal, an alarm device can be set in the sealant delivery system 100. The alarm device is electrically connected to the liquid level gauge to issue an alarm when the height of the sealant in the sealant storage tank 3 is abnormal. In this way, the staff can handle it in time to ensure the normal operation of the sealant delivery system 100.

[0046] In this embodiment, as Figure 1 shown, a pressurization group 6 is provided on the pipeline of each sealant delivery branch pipe 221. The pressurization group 6 includes a plurality of pressurization pumps 61 arranged at intervals in the left-right direction. The plurality of pressurization pumps 61 are used to pressurize the sealant in the corresponding sealant delivery branch pipe 221. In this way, the number of pressurization pumps 61 turned on can be adjusted according to actual needs to control the sealant output speed of the corresponding sealant delivery branch pipe 221 and meet the part coating processing requirements.

[0047] In this embodiment, as Figure 1 shown, the pressurization pump 61 at the right end in the pressurization group 6 is the first pressurization pump 61; a pressure relief valve 7 is provided on each sealant delivery branch pipe 221, and the pressure relief valve 7 is located on the side of the first pressurization pump 61 close to the sealant storage tank 3. In this way, when the pressure in the sealant delivery branch pipe 221 is too high, the pressure relief valve 7 is opened to reduce the internal pressure of the sealant delivery branch pipe 221 and prevent the sealant delivery branch pipe 221 from cracking.

[0048] As Figure 2 shown, it is a schematic flow chart of a specific embodiment of the method for cleaning residual sealant of a sealant delivery system 100 according to the present invention.

[0049] Please refer to Figure 2 , in this embodiment, the method for cleaning residual sealant of the sealant delivery system 100 includes the following steps:

[0050] Step S10, discharging the remaining sealant: Turn on a plurality of the sealant suction pumps 11 and conduct the sealant delivery pipeline 2 to discharge the remaining sealant in the sealant delivery system 100, and collect the first sealant sample;

[0051] Step S20, filling with cleaning agent: Fill the sealant delivery system 100 with cleaning agent until the glue delivery pipeline 2 and the glue storage barrel 3 are filled.

[0052] Step S30, removing residual glue: Let the cleaning agent stand in the glue delivery pipeline 2 and the glue storage barrel 3 until a preset standing time is reached, so that the residual glue layer adhering to the glue delivery pipeline 2 and the glue storage barrel 3 falls off.

[0053] Step S40, discharging the cleaning agent: Fill the first glue sample into the glue delivery pipeline 2 and the glue storage barrel 3 to squeeze out the cleaning agent containing the residual glue layer in the glue delivery pipeline 2 and the glue storage barrel 3, and make part of the first glue sample discharged, and collect the second glue sample.

[0054] Step S50, confirming the glue sample: Detect the viscosity value of the collected second glue sample, and compare the viscosity value with a preset viscosity to determine whether the residual glue cleaning is completed.

[0055] When cleaning the residual glue of the sealant delivery system 100, first, turn on multiple suction glue pumps 11 and conduct the glue delivery pipeline 2, so as to discharge the remaining sealant in the sealant delivery system 100, and collect the remaining sealant at the same time to obtain the first glue sample; second, fill the sealant delivery system 100 with cleaning agent until the cleaning agent fills the glue delivery pipeline 2 and the glue storage barrel 3; third, let the cleaning agent stand in the glue delivery pipeline 2 and the glue storage barrel 3 until a preset standing time is reached, so as to realize the soaking treatment of the glue delivery pipeline 2 and the glue storage barrel 3, so that the residual glue layer adhering to the glue delivery pipeline 2 and the glue storage barrel 3 falls off; fourth, fill the first glue sample into the glue delivery pipeline 2 and the glue storage barrel 3, so as to squeeze out the cleaning agent containing the residual glue layer, and collect it when the first glue sample is discharged to obtain the second glue sample; fifth, detect the viscosity value of the second glue sample, and compare the viscosity value of the second glue sample with a preset viscosity to determine whether the residual glue cleaning is completed. It should be noted that the preset viscosity is the viscosity value of the first glue sample, and the first glue sample is the sealant delivered by the sealant delivery system 100. Thus, when the viscosity of the second glue sample reaches the preset viscosity, it can be determined that all the remaining cleaning agent has been removed, and the sealant delivery system 100 can deliver the sealant normally.

[0056] Furthermore, a stirrer is provided in the glue storage barrel 3; in this embodiment, before step S40, it further includes:

[0057] Step S100, driving the stirrer to work to stir the cleaning agent in the glue storage barrel 3 until all the residual glue layers on the wall surface of the glue storage barrel 3 fall off.

[0058] By stirring the cleaning agent in the glue storage barrel 3, the residual glue on the wall surface of the glue storage barrel 3 is accelerated to fall off, and the cleaning efficiency is improved.

[0059] Furthermore, in step S50, when the viscosity value is less than the preset viscosity, continue to pour the first glue sample into the sealant delivery system 100 until the viscosity value is greater than the preset viscosity; when the viscosity value is greater than the preset viscosity, stop pouring the first glue sample into the sealant delivery system 100, and the residual glue cleaning is completed. In this way, it is ensured that all the cleaning agent in the sealant delivery system 100 can be removed.

[0060] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention. Any equivalent structural transformation made by using the content of the specification and drawings of the present invention under the inventive concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A method for cleaning residual glue in a sealant delivery system. It is characterized in that The sealant delivery system is used to deliver sealant to the first gluing processing area and the second gluing processing area of ​​the automobile body. The sealant delivery system includes: The glue suction component comprises a plurality of glue suction pumps arranged in sequence and at intervals along the left and right directions, wherein the glue suction pump at the right end of the plurality of glue suction pumps is a standby glue pump; The glue delivery pipeline includes a glue delivery branch and a glue delivery main pipeline which are arranged in sequence from front to back and are interconnected, wherein the glue delivery main pipeline can be connected to the outlets of the plurality of glue suction pumps, and the glue delivery branch pipeline includes two glue delivery branch pipes arranged in parallel; and A glue storage barrel is arranged on the main glue delivery route and is located on the right side of the standby glue pump, and is used to store sealant. The inlet end of the glue storage barrel is connected to the main glue delivery route, and the outlet end of the glue storage barrel is connected to the two glue delivery branch pipes. The plurality of glue suction pumps guide the sealant into the glue delivery branch, and the sealant flows from the glue delivery branch into the glue storage barrel, so that the two glue delivery branch pipes deliver the sealant to the first glue coating processing area and the second glue coating processing area respectively; The residual glue cleaning method of the sealant delivery system comprises the following steps: Discharging residual glue: opening the plurality of glue suction pumps and connecting the glue delivery pipeline to discharge the residual sealant in the sealant delivery system, and collecting to obtain a first glue sample; Pouring cleaning agent: Pouring cleaning agent into the sealant delivery system until the sealant delivery pipeline and the sealant storage barrel are filled; Removing residual glue: allowing the cleaning agent to stand in the glue delivery pipeline and the glue storage barrel until a preset standing time is reached, so that the residual glue layer adhering to the glue delivery pipeline and the glue storage barrel falls off; Discharging the cleaning agent: pouring the first glue sample into the glue delivery pipeline and the glue storage barrel to squeeze out the cleaning agent containing the residual glue layer in the glue delivery pipeline and the glue storage barrel, and partially discharging the first glue sample to collect the second glue sample; Confirm glue sample: Detect the viscosity value of the collected second glue sample, and compare the viscosity value with the preset viscosity to determine whether the residual glue cleaning is completed.

2. The method for cleaning residual glue of the sealant delivery system according to claim 1, It is characterized in that The outside of the main glue delivery path of the sealant delivery system is wrapped with a heating belt, and the heating belt is located between the backup glue pump and the glue storage barrel, and is used to heat the sealant in the main glue delivery path.

3. The method for cleaning residual glue of the sealant delivery system according to claim 1, It is characterized in that A filter is provided in the main glue delivery path of the sealant delivery system, and the filter is located between the standby glue pump and the glue storage barrel, so as to allow the sealant to flow into the glue storage barrel after passing through the filter.

4. The method for cleaning residual glue of the sealant delivery system according to claim 1, It is characterized in that The glue storage barrel of the sealant delivery system is provided with a stirrer.

5. The method for cleaning residual glue of the sealant delivery system according to claim 1, It is characterized in that The glue storage barrel of the sealant delivery system is provided with a liquid level meter for monitoring the height of the sealant in the glue storage barrel.

6. The method for cleaning residual glue of the sealant delivery system according to claim 1, It is characterized in that a pressurization group is provided on the pipeline of each glue conveying branch pipe of the sealant conveying system, and the pressurization group includes a plurality of pressurization pumps arranged at intervals in the left-right direction, and the plurality of pressurization pumps are used to pressurize the sealant in the corresponding glue conveying branch pipe.

7. The method for cleaning residual glue of the sealant conveying system according to claim 6, It is characterized in that the pressurization pump at the right end in the pressurization group of the sealant conveying system is the first pressurization pump; each glue conveying branch pipe is provided with a pressure relief valve, and the pressure relief valve is located on the side of the first pressurization pump close to the glue storage barrel.

8. The method for cleaning residual glue of the sealant conveying system according to claim 1, It is characterized in that a stirrer is provided in the glue storage barrel; before the step of "discharging the cleaning agent: pouring the first glue sample into the glue conveying pipeline and the glue storage barrel to extrude the cleaning agent containing the residual glue layer in the glue conveying pipeline and the glue storage barrel, and discharging a part of the first glue sample to collect the second glue sample", the following steps are further included: driving the stirrer to work to stir the cleaning agent in the glue storage barrel until the residual glue layer on the wall surface of the glue storage barrel completely falls off.

9. The method for cleaning residual glue of the sealant conveying system according to claim 1, It is characterized in that in the step of "confirming the glue sample: detecting the viscosity value of the collected second glue sample, comparing the viscosity value with a preset viscosity to judge whether the residual glue cleaning is completed": when the viscosity value is less than the preset viscosity, continue to pour the first glue sample into the sealant conveying system until the viscosity value is greater than the preset viscosity; when the viscosity value is greater than the preset viscosity, stop pouring the first glue sample into the sealant conveying system, and the residual glue cleaning is completed.

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