Sealing plug receiver and automatic paint recycling pipeline of paint spraying robot

Abstract

The utility model relates to a sealing plug receiver which comprises a base body and a filter barrel. One pipe orifice of the base body is a paint inlet, and the other pipe orifice of the base body is a paint outlet; the filter barrel is fixed in the pipe cavity of the base body, and a transition interlayer is formed between the outer circumferential surface of the filter barrel and the pipe cavity wall of the base body; the barrel opening of the filter barrel is arranged towards the paint inlet of the base body; the barrel bottom of the filter barrel is used for blocking the sealing plug when being used, the barrel bottom of the filter barrel is arranged towards the paint outlet of the base body, and a via hole for communicating the barrel cavity with the outside is formed in the barrel bottom of the filter barrel; a first through hole and a second through hole are formed in the barrel wall of the filter barrel; the first through hole is close to the barrel opening of the filter barrel, the second through hole is close to the barrel bottom of the filter barrel, and the first through hole and the second through hole are communicated with the barrel cavity of the filter barrel and the transition interlayer. The sealing plug receiver has the advantages of being simple in structure, scientific in design, convenient to use, low in use cost and the like. The utility model further relates to an automatic paint recovery pipeline of the paint spraying robot applying the scheme.

Description

Technical Field

[0001] The utility model relates to the technical field of paint supply systems, in particular to a sealing plug receiver; the utility model also relates to an automatic paint recovery pipeline of a paint spraying robot. Background Art

[0002] Most of the existing water-based paint supply equipment in China adopts the main line circulation method, that is, the paint can circulate in the main paint supply line, while the branch line connecting the paint spraying robot (that is, the pipeline between the main line and the color changing valve of the paint spraying robot) uses a single pipeline, which cannot realize the paint circulation function.

[0003] For colors with higher production, this design can simplify the equipment structure, reduce equipment investment, and provide good painting quality. However, for colors with lower production, this paint branch line will cause more spraying quality problems, high production costs and additional hazardous waste.

[0004] Small colors with low production volume may not be produced for a week or two, or may only be sprayed for a few days a month. Because the paint does not circulate in the branch pipe for a long time (more than 3 days), the paint pigment will be deposited, and these deposited pigments will cause spraying defects such as dirty spots, blooming, color difference, and mottled colors after spraying.

[0005] In order to solve the above problems, there are generally two ways to deal with it:

[0006] One is that the production staff will perform paint discharge operations on all small colors with low production before starting production every Monday to discharge the paint with pigment deposition in the paint branch pipe. Such operations will waste a lot of paint and have high processing costs.

[0007] The second is to install a paint recovery system on the branch line to push the paint in the branch line back into the main line. Such a structure requires a sealing plug and a sealing plug receiver to push the paint to move. The existing sealing plug receiver is generally as described in the technical solution of Chinese Patent Application No. 2023107476357, entitled "A branch pipe ball device for a paint supply system". This solution has a second paint inlet connected to the paint branch pipe on the outer wall of the receiver, a second paint outlet for connecting to the atomizer is also opened on the side wall of the receiver, and a second connecting channel connecting the second paint inlet and the second paint outlet is opened inside the receiver. When such a receiver is in use, the paint passes through the avoidance channel in the receiver and then through the second connecting channel to reach the second paint outlet. Such a structure requires that the cross-section of the avoidance channel be made larger than the cross-section of the ball (i.e., the sealing plug), which makes the ball swing during the flow of paint in the receiver, causing the ball to be easily scratched. After the ball is scratched, the sealing between it and the paint branch line will deteriorate, so that the ball needs to be replaced every time it is used for a period of time, and the cost of use is high. Utility Model Content

[0008] The utility model aims to provide a sealing plug receiver, which has the advantages of simple structure, scientific design, convenient use and low use cost.

[0009] The technical solution of the sealing plug receiver is achieved as follows: a sealing plug receiver, in particular, comprises a base and a filter barrel; the base is a pipe fitting, one pipe opening of the base is a paint inlet, and the other pipe opening of the base is a paint outlet; the filter barrel is fixed in the tube cavity of the base, and a transition interlayer is formed between the outer circumferential surface of the filter barrel and the tube cavity wall of the base; the barrel opening of the filter barrel is arranged in the direction of the paint inlet of the base; the barrel bottom of the filter barrel is used to block the sealing plug when in use, and the barrel bottom of the filter barrel is arranged in the direction of the paint outlet of the base, and a through hole connecting the barrel cavity with the outside is formed on the barrel bottom of the filter barrel; a first through hole and a second through hole are formed on the barrel wall of the filter barrel; the first through hole is arranged close to the barrel opening of the filter barrel, and the second through hole is arranged close to the barrel bottom of the filter barrel, and the first through hole and the second through hole both connect the barrel cavity of the filter barrel with the transition interlayer.

[0010] The present solution is provided with a filter barrel and a transition interlayer is formed between the outer circumferential surface of the filter barrel and the tubular cavity wall of the base body. When such a structure is in use, after the sealing plug is in the filter barrel, when spraying paint, the paint touches the sealing plug and enters the transition interlayer through the first through hole of the filter barrel, and then flows into the filter barrel through the second through hole, and finally flows out through the through hole of the filter barrel and the paint outlet of the base body. When such a structure is used, the sealing plug can be made into a design that matches and nests with the barrel cavity of the filter barrel, so that the sealing plug will not swing in the filter barrel and the sealing plug will not be scratched, which greatly improves the service life of the sealing plug and reduces the cost of use.

[0011] Furthermore, the tubular cavity of the base body includes a front cavity section and a rear cavity section; the cavity diameter of the rear cavity section is larger than the cavity diameter of the front cavity section; the filter barrel is fixed in the rear cavity section of the base body, and the cavity diameter of the barrel cavity of the filter barrel is the same as the cavity diameter of the front cavity section of the base body.

[0012] Furthermore, a rear convex ring portion is formed on the filter barrel; the rear convex ring portion is arranged along the bottom edge of the filter barrel, and the rear convex ring portion is matched and nested with the rear cavity section of the base.

[0013] Furthermore, the present solution also includes a docking joint; one end of the docking joint is connected to the rear end of the base, and a retaining ring is formed on the docking joint; the retaining ring cooperates with the rear end surface of the front cavity section of the base to clamp and fix the filter barrel.

[0014] The sealing plug receiver has the advantages of simple structure, scientific design, convenient use and low use cost.

[0015] The utility model also provides an automatic paint recovery pipeline of a painting robot. The automatic paint recovery pipeline of the painting robot has the advantages of simple structure, scientific design, convenient use and low use cost.

[0016] The technical solution of the automatic paint recovery pipeline of the painting robot is implemented as follows: an automatic paint recovery pipeline of the painting robot comprises a paint delivery pipe, a sealing plug, a receiver and a paint sprayer; one end of the paint delivery pipe is connected to the paint inlet of the receiver, and the other end of the paint delivery pipe is connected to the paint supply source when in use; the paint outlet of the receiver is connected to the paint sprayer through a pipeline, and an air source inlet is provided on the pipeline between the receiver and the paint sprayer; the sealing plug is arranged in the receiver; in particular, the receiver is the sealing plug receiver described in the above solution; A scraping portion is formed on the sealing plug; the scraping portion is matched and nested with the barrel cavity of the filter barrel, and the cross-sectional diameter of the scraping portion is larger than the barrel cavity diameter of the paint supply pipe; when the sealing plug is against the barrel bottom of the filter barrel: the scraping portion of the sealing plug is between the first through hole and the second through hole of the filter barrel; a front connecting space is formed between the front end of the sealing plug and the barrel cavity wall of the filter barrel, and the first through hole of the filter barrel is connected to the barrel mouth through the front connecting space; a rear connecting space is formed between the rear end of the sealing plug and the barrel bottom of the filter barrel, and the second through hole of the filter barrel is connected to the through hole through the rear connecting space.

[0017] When the present solution is in use, the paint supply source is the main pipeline for circulating the paint, and the paint delivery pipe is connected to the paint supply source through a main valve body. When spraying paint, the paint from the paint supply source passes through the main valve body into the paint delivery pipe. During the flow of the paint in the paint delivery pipe, the paint will push the sealing plug to move into the filter barrel of the receiver. When the sealing plug enters the receiver and abuts against the bottom of the filter barrel, the paint will successively enter the transition interlayer through the front connecting space and the first through hole, and then enter the rear connecting space through the second through hole, and finally flow to the paint sprayer through the through hole of the filter barrel and the paint outlet of the base. When such a structure is in use, the sealing plug will not swing in the filter barrel and will not be scratched, thereby greatly improving the service life of the sealing plug and reducing the cost of use.

[0018] There are two structures of sealing plugs:

[0019] One is that the sealing plug is made of soft material; both ends of the sealing plug are large heads, the circumferential surfaces of each large head are the scraping wall parts, deformation cavities are formed in each large head, and the scraping wall parts on each large head are located at the periphery of their own deformation cavities; the front and rear end surfaces of the sealing plug are convex structures, so that when the sealing plug is against the bottom of the filter barrel: the front connecting space can be formed between the front end of the sealing plug and the barrel cavity wall of the filter barrel, and the rear connecting space is formed between the rear end of the sealing plug and the barrel bottom of the filter barrel.

[0020] Another type is that the sealing plug is made of soft material; the scraping wall portion is a front annular fin and a rear annular fin integrally formed on the sealing plug; the front end of the sealing plug is formed with a front convex column portion protruding from the front annular fin, and the rear end of the sealing plug is formed with a rear convex column portion protruding from the rear annular fin; the cross-sectional diameters of the front convex column portion and the rear convex column portion are each smaller than the cross-sectional diameter of the sealing plug, so that when the sealing plug is abutted against the bottom of the filter barrel: the front end of the sealing plug can form the front connecting space with the barrel cavity wall of the filter barrel, and the rear connecting space is formed between the rear end of the sealing plug and the barrel bottom of the filter barrel.

[0021] Furthermore, the automatic paint recovery pipeline of the painting robot also includes a main control module, a front detector and a rear detector; a detected part is arranged in the sealing plug; an air inlet valve is arranged on the air source inlet; the front detector, the rear detector and the air inlet valve are all electrically connected to the main control module, and the front detector and the rear detector are both used to detect the detected part in the sealing plug, the detection end of the front detector is arranged near the end of the paint delivery pipe away from the receiver, and the detection end of the rear detector is arranged near the paint inlet of the receiver.

[0022] Furthermore, the automatic paint recovery pipeline of the paint spraying robot also includes a color-changing valve; the color-changing valve is electrically connected to the main control module, and the color-changing valve includes a connecting seat and a color picker; a plurality of paint inlet channels are provided on the connecting seat; the color picker and the connecting seat can move relative to each other, so that the paint inlet end of the color picker can be switched between various paint inlet channels and connected to the paint outlet end of the paint inlet channel; the paint outlet of the receiver is connected to the paint inlet end of a paint inlet channel through a pipe; the paint outlet end of the color picker is connected to the paint sprayer through a pipe; the air inlet valve is connected to the internal channel of the color picker.

[0023] Furthermore, one end of the paint supply pipe is connected to a paint supply source through a temporary reservoir when in use; the temporary reservoir is a pipe fitting, one pipe opening of the temporary reservoir is a first pipe opening, and the other pipe opening of the temporary reservoir is a second pipe opening, the first pipe opening is connected to an end of the paint supply pipe away from the receiver, the cross-section of the first pipe opening is greater than or equal to the cross-section of the scraping wall portion of the sealing plug, and the cross-section of the second pipe opening is smaller than the cross-section of the scraping wall portion of the sealing plug.

[0024] The beneficial effects of the paint automatic recovery pipeline of the painting robot include simple structure, scientific design, convenient use and low use cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the three-dimensional structure of Example 1.

[0026] Figure 2 This is a schematic diagram of the main structure of Example 1.

[0027] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure in the AA direction.

[0028] Figure 4 This is a schematic diagram of the disassembly and assembly structure of Example 1.

[0029] Figure 5 Schematic diagram of the structure of Example 2 when in use.

[0030] Figure 6 This is a schematic diagram of the main structure of the sealing plug of Example 2 installed in the receiver.

[0031] Figure 7 for Figure 6 Schematic diagram of the cross-sectional structure in the BB direction.

[0032] Figure 8 It is a schematic diagram of the structure of the register of Example 2.

[0033] Fig. 9 for Figure 8 Schematic diagram of the cross-sectional structure in the CC direction.

[0034] Fig.10This is a schematic diagram of the structure of the sealing plug of Example 3.

[0035] Fig.11 for Fig.10 Schematic diagram of the cross-sectional structure in the DD direction.

[0036] Description of reference numerals: 1-base; 11-front cavity section; 12-rear cavity section; 2-filter barrel; 21-transition interlayer; 22-through hole; 23-first through hole; 24-second through hole; 25-rear convex ring portion; 26-front convex ring portion; 3-joint; 31-blocking ring portion;

[0037] 4-paint delivery pipe; 41-main valve body; 5-sealing plug; 51-wall scraping part; 52-large head; 53-deformation chamber; 54-detected part; 55-front connecting space; 56-rear connecting space; 57-front annular fin; 58-rear annular fin; 59-front convex column; 510-rear convex column; 6-receiver; 7-paint sprayer; 8-paint supply source; 9-main control module; 10-front detector; 20-rear detector; 30-air inlet valve; 40-color changing valve; 401-connecting seat; 402-color picker; 403-paint inlet channel; 50-temporary storage device; 501-liquid outlet; 60-liquid outlet valve; 70-liquid inlet valve. DETAILED DESCRIPTION

[0038] Example 1

[0039] like Figure 1 , Figure 2 , Figure 3 , Figure 4As shown, this embodiment is a sealing plug receiver, comprising a base 1 and a filter barrel 2; the base 1 is a pipe fitting, one pipe opening of the base 1 is a paint inlet, and the other pipe opening of the base 1 is a paint outlet; the filter barrel 2 is a circular barrel, the filter barrel 2 is fixed in the tube cavity of the base 1, and a transition interlayer 21 is formed between the outer circumferential surface of the filter barrel 2 and the tube cavity wall of the base 1; the barrel opening of the filter barrel 2 is arranged in the direction of the paint inlet of the base 1; the barrel bottom of the filter barrel 2 is used to block the sealing plug when in use, and the barrel bottom of the filter barrel 2 is arranged in the direction of the paint outlet of the base 1, A through hole 22 connecting the barrel cavity with the outside is formed on the barrel bottom of the filter barrel 2, and the number of the through holes 22 is multiple; a first through hole 23 and a second through hole 24 are formed on the barrel wall of the filter barrel 2, and there are multiple first through holes 23 and multiple second through holes 24, and the multiple first through holes 23 and the multiple second through holes 24 are arranged around the axis of the filter barrel 2; the first through hole 23 is arranged near the barrel mouth of the filter barrel 2, and the second through hole 24 is arranged near the barrel bottom of the filter barrel 2, and the first through hole 23 and the second through hole 24 both connect the barrel cavity of the filter barrel 2 and the transition interlayer 21. With such a design, when the sealing plug is in the filter barrel 2 during use, when spraying paint, the paint touches the sealing plug and enters the transition interlayer 21 through the first through hole 23 of the filter barrel 2, and then flows into the filter barrel 2 through the second through hole 24, and finally flows out through the through hole 22 of the filter barrel 2 and the paint outlet of the base 1. When such a structure is used, the sealing plug can be made into a design that matches and nests with the barrel cavity of the filter barrel 2, so that the sealing plug will not swing in the filter barrel 2 and the sealing plug will not be scratched, thereby greatly improving the service life of the sealing plug and reducing the cost of use.

[0040] In order to prevent the sealing plug from being scratched when it moves from the filter barrel 2 to the tube cavity of the base 1 or from the tube cavity of the base 1 to the filter barrel 2 during use, Figure 2 , Figure 3 , Figure 4 As shown, the tubular cavity of the base 1 includes a front cavity section 11 and a rear cavity section 12; the cavity diameter of the rear cavity section 12 is larger than the cavity diameter of the front cavity section 11; the filter barrel 2 is fixed in the rear cavity section 12 of the base 1, the front end surface of the filter barrel 2 abuts against the rear end surface of the front cavity section 11 of the base 1, and the cavity diameter of the barrel cavity of the filter barrel 2 is the same as the cavity diameter of the front cavity section 11 of the base 1. Such a structure allows a smooth transition between the filter barrel 2 and the front cavity section 11 of the base 1, thereby preventing the sealing plug from being scratched at the joint of the filter barrel 2 and the front cavity section 11 of the base 1 during use.

[0041] In order to make the structure of the sealing plug receiver more reasonable, Figure 2 , Figure 3 , Figure 4As shown, a rear convex ring portion 25 is formed on the filter barrel 2; the rear convex ring portion 25 is arranged along the bottom edge of the filter barrel 2, and the rear convex ring portion 25 is matched and nested with the rear cavity section 12 of the base 1. In this way, after the filter barrel 2 is installed in the base 1, the surface where the barrel mouth of the filter barrel 2 is located will abut against the rear end surface of the front cavity section 11 of the base 1, so as to form the transition interlayer 21 between the rear end surface of the front cavity section 11 of the base 1 and the rear convex ring portion 25 of the filter barrel 2. In order to facilitate assembly, a front convex ring portion 26 is formed on the filter barrel 2; the front convex ring portion 26 is arranged along the barrel mouth edge of the filter barrel 2, and the front convex ring portion 26 is matched and nested with the rear cavity section 12 of the base 1. When assembling such a structure, it is only necessary to nest the filter barrel 2 in the rear cavity section 12 of the base 1 so that the filter barrel 2 and the base 1 can be coaxially arranged, which greatly improves the assembly efficiency.

[0042] In order to make the sealing plug receiver more convenient to produce, Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, the sealing plug receiver also includes a docking head 3; one end of the docking head 3 is connected to the rear end of the base 1, and a retaining ring portion 31 is formed on the docking head 3; the retaining ring portion 31 cooperates with the rear end surface of the front cavity section 11 of the base 1 to clamp and fix the filter barrel 2. In actual application, the filter barrel 2 can be fixed in the base 1 by interference fit or direct welding with the base 1. Such an assembly structure takes a long time. In this embodiment, after the docking head 3 is adopted and the docking head 3 and the base 1 are threadedly connected, the filter barrel 2 can be clamped and positioned by the docking head 3 and the base 1, which greatly improves the assembly efficiency.

[0043] Example 2

[0044] like Figure 5 , Figure 6 , Figure 7As shown, this embodiment is an automatic paint recovery pipeline of a painting robot, comprising a paint delivery pipe 4, a sealing plug 5, a receiver 6 and a paint sprayer 7; the paint delivery pipe 4 is a hose, one end of which is connected to the paint inlet of the receiver 6, and the other end of the paint delivery pipe 4 is connected to a paint supply source 8 when in use; the paint outlet of the receiver 6 is connected to the paint sprayer 7 through a pipeline, and an air source inlet is provided on the pipeline between the receiver 6 and the paint sprayer 7, and the paint sprayer 7 is a sprayer or a spray gun; the sealing plug 5 is arranged in the receiver 6; the receiver 6 is the sealing plug receiver described in Example 1; a wall scraping portion 51 is formed on the sealing plug 5 ; The scraping wall portion 51 is matched and nested with the barrel cavity of the filter barrel 2, and the cross-sectional diameter of the scraping wall portion 51 is larger than the barrel cavity diameter of the paint supply pipe 4; when the sealing plug 5 is against the barrel bottom of the filter barrel 2: the scraping wall portion 51 of the sealing plug 5 is between the first through hole 23 and the second through hole 24 of the filter barrel 2; a front connecting space 55 is formed between the front end of the sealing plug 5 and the barrel cavity wall of the filter barrel 2, and the first through hole 23 of the filter barrel 2 is connected to the barrel mouth through the front connecting space 55; a rear connecting space 56 is formed between the rear end of the sealing plug 5 and the barrel bottom of the filter barrel 2, and the second through hole 24 of the filter barrel 2 is connected to the through hole 22 through the rear connecting space 56. When in use, the paint supply source 8 is the main pipeline for circulating paint, and the paint delivery pipe 4 is connected to the paint supply source 8 through a main valve body 41. When spraying paint, the paint from the paint supply source 8 enters the paint delivery pipe 4 through the main valve body 41. During the flow of the paint in the paint delivery pipe 4, the sealing plug 5 will be pushed to move to the filter barrel 2 of the receiver 6. When the sealing plug 5 enters the receiver 6 and abuts against the bottom of the filter barrel 2, the paint will successively enter the transition interlayer 21 through the front connecting space 55 and the first through hole 23, and then enter the rear connecting space 56 through the second through hole 24, and finally flow to the paint sprayer 7 through the through hole 22 of the filter barrel 2 and the paint outlet of the base 1. When such a structure is in use, the sealing plug 5 will not swing in the filter barrel 2, and the sealing plug 5 will not be scratched, which greatly improves the service life of the sealing plug 5 and reduces the cost of use.

[0045] In order to make the structure of the sealing plug 5 more reasonable, Figure 5 , Figure 6 , Figure 7As shown, the sealing plug 5 is made of a soft material, which is rubber; both ends of the sealing plug 5 are large heads 52, and the circumferential surfaces of the large heads 52 are the scraping wall parts 51, and deformation cavities 53 are formed in the large heads 52, which are annular cavities, and the scraping wall parts 51 on the large heads 52 are located at the periphery of their own deformation cavities 53; the front and rear end surfaces of the sealing plug 5 are convex structures, so that when the sealing plug 5 abuts against the barrel bottom of the filter barrel 2: the front end of the sealing plug 5 can form the front connecting space 55 with the barrel cavity wall of the filter barrel 2, and the rear end of the sealing plug 5 can form the rear connecting space 56 with the barrel bottom of the filter barrel 2. The sealing plug 5 is made of a soft material and is provided with a deformation cavity 53. When the sealing plug 5 enters the paint delivery pipe 4 in use, the large head 52 of the sealing plug 5 will deform, so that the scraping wall part 51 is closely attached to the barrel cavity wall of the paint delivery pipe 4, so as to scrape the paint in the paint delivery pipe 4 clean.

[0046] In order to make the automatic paint recovery pipeline of the painting robot more intelligent, Figure 5 , Figure 6 , Figure 7As shown, the paint automatic recovery pipeline of the painting robot also includes a main control module 9, a front detector 10 and a rear detector 20; a detected part 54 is provided in the sealing plug 5, the detected part 54 is a magnet, and the front detector 10 and the rear detector 20 are both magnetic proximity switches; an air inlet valve 30 is provided on the air source inlet; the front detector 10, the rear detector 20, the air inlet valve 30, and the main valve body 41 are all electrically connected to the main control module 9, and the front detector 10 and the rear detector 20 are both used to detect the detected part 54 in the sealing plug 5, the detection end of the front detector 10 is arranged near the end of the paint delivery pipe 4 away from the receiver 6, and the detection end of the rear detector 20 is arranged near the paint inlet of the receiver 6. When in use, the air inlet valve 30 will be connected to the air supply source, which is an air compressor, and the air supply source is electrically connected to the main control module 9. When the paint in the paint supply pipe 4 needs to be recovered, the main control module 9 is operated to enable the air inlet valve 30 and the air supply source to start inputting gas. The gas will push the sealing plug 5 in the receiver 6 to move. When the sealing plug 5 passes the rear detector 20, the rear detector 20 sends a first signal to the main control module 9. When the sealing plug 5 passes the front detector 10, the front detector 10 sends a second signal to the main control module 9. After receiving the second signal, the main control module 9 knows that the sealing plug 5 has pushed the paint back into the paint supply source 8. At this time, the main control module 9 will control the air inlet valve 30, the main valve body 41 and the air supply source to be closed. After the main valve body 41 is closed, the paint supply source 8 is disconnected from the paint supply pipe 4, so that the paint in the paint supply source 8 continues to circulate. When spraying, open the main valve body 41 so that the paint can enter the paint supply pipe 4 from the paint supply source 8. The main control module 9 will receive the first signal and the second signal. The time difference between the two signals received by the main control module 9 is the time taken for the sealing plug 5 to move from one end to the other. This time can be used for the paint recovery program in the main control module 9 and the time setting of the paint filling program during production.

[0047] In order to make the structure of the paint automatic recovery pipeline of the painting robot more reasonable, Figure 5 As shown, the paint automatic recovery pipeline of the paint spraying robot also includes a color-changing valve 40; the color-changing valve 40 is electrically connected to the main control module 9, and the color-changing valve 40 includes a connecting seat 401 and a color picker 402; the connecting seat 401 is provided with a plurality of paint inlet channels 403; the color picker 402 and the connecting seat 401 can move relative to each other, and the relative movement of the color picker 402 and the connecting seat 401 can be rotation or linear reciprocating movement, so that the paint inlet end of the color picker 402 can be switched between each paint inlet channel 403 and connected to the paint outlet end of the paint inlet channel 403; the paint outlet of the receiver 6 is connected to the paint inlet end of a paint inlet channel 403 through a pipeline; the paint outlet end of the color picker 402 is connected to the paint sprayer 7 through a pipeline; the air inlet valve 30 is connected to the internal channel of the color picker 402. With such a design, the gas input through the air inlet valve 30 can be used for paint recovery when in use, and can also be used when spraying paint, thereby reducing production costs.

[0048] In order to make the structure of the paint automatic recovery pipeline of the painting robot more reasonable, Figure 5 , Figure 8 , Fig. 9 As shown, one end of the paint delivery pipe 4 is connected to the paint supply source 8 through a temporary storage 50 when in use, and the temporary storage 50 is specifically connected to the main valve body 41; the temporary storage 50 is a pipe fitting, one pipe opening of the temporary storage 50 is a first pipe opening, and the other pipe opening of the temporary storage 50 is a second pipe opening, the first pipe opening is connected to the end of the paint delivery pipe 4 away from the receiver 6, and the cross section of the first pipe opening is larger than the cross section of the scraping wall part 51 of the sealing plug 5; the second pipe opening is connected to the main valve body 41 when in use, and the cross section of the second pipe opening is smaller than the cross section of the scraping wall part 51 of the sealing plug 5. With such a structure, after the paint is recovered, the sealing plug 5 is in the temporary storage 50 to protect the sealing plug 5.

[0049] In order to further optimize the paint automatic recovery pipeline of the painting robot, the paint automatic recovery pipeline of the painting robot also has a cleaning function, such as Figure 5 , Figure 8 , Fig. 9 As shown, a liquid outlet 501 is provided on the temporary storage device 50, and the liquid outlet 501 is connected to a liquid outlet valve 60. When the sealing plug 5 is in the temporary storage device 50, the liquid outlet 501 is between the sealing plug 5 and the end of the paint delivery pipe 4 away from the receiver 6; the color picker 402 is also connected to a liquid inlet valve 70 through a pipeline, and the liquid inlet valve 70 is used to input a pulse solvent; when in use, when the sealing plug 5 is in the temporary storage device 50 (that is, after the main control module 9 receives the second signal), the main control module 9 controls the liquid inlet valve 70 and the liquid outlet valve 60 to start, so that the pulse solvent enters through the liquid inlet valve 70 and the color changing valve 40 to dissolve and clean the paint remaining on the receiver 6 and the paint delivery pipe 4, and finally the sewage flows out from the liquid outlet valve 60.

[0050] Example 3

[0051] The difference between this embodiment and embodiment 2 is that the structure of the sealing plug is different. Fig.10 , Fig.11As shown, the scraping portion 51 of the sealing plug 5 of the present embodiment is a front annular fin 57 and a rear annular fin 58 integrally formed on the sealing plug 5; the front end of the sealing plug 5 is formed with a front convex column portion 59 protruding from the front annular fin 57, and the rear end of the sealing plug 5 is formed with a rear convex column portion 510 protruding from the rear annular fin 58; the cross-sectional diameters of the front convex column portion 59 and the rear convex column portion 510 are each smaller than the cross-sectional diameter of the sealing plug 5, so that when the sealing plug 5 abuts against the bottom of the filter barrel: the front end of the sealing plug 5 can form the front connecting space with the barrel cavity wall of the filter barrel, and the rear connecting space is formed between the rear end of the sealing plug 5 and the barrel bottom of the filter barrel. Since the front annular fin 57 and the rear annular fin 58 are also made of soft materials, when such a structure is in use, the front annular fin 57 and the rear annular fin 58 can be deformed under the action of the tube wall of the paint delivery tube and fit tightly with the tube cavity wall of the paint delivery tube 4, so that the sealing plug 5 can scrape the tube wall of the paint delivery tube clean during the movement. The technical effect of the sealing plug 5 in this embodiment when in use is the same as that of the sealing plug in Example 2.

Claims

1. A sealing plug receiver, characterized in that: It includes a base and a filter barrel; the base is a pipe fitting, one pipe opening of the base is a paint inlet, and the other pipe opening of the base is a paint outlet; the filter barrel is fixed in the tube cavity of the base, and a transition interlayer is formed between the outer circumferential surface of the filter barrel and the tube cavity wall of the base; the barrel opening of the filter barrel is arranged in the direction of the paint inlet of the base; the barrel bottom of the filter barrel is used to block the sealing plug when in use, and the barrel bottom of the filter barrel is arranged in the direction of the paint outlet of the base, and a through hole connecting the barrel cavity with the outside is formed on the barrel bottom of the filter barrel; a first through hole and a second through hole are formed on the barrel wall of the filter barrel; the first through hole is arranged close to the barrel opening of the filter barrel, and the second through hole is arranged close to the barrel bottom of the filter barrel, and the first through hole and the second through hole both connect the barrel cavity of the filter barrel with the transition interlayer.

2. A sealing plug receiver according to claim 1, characterized in that: The tubular cavity of the base body includes a front cavity section and a rear cavity section; the cavity diameter of the rear cavity section is larger than the cavity diameter of the front cavity section; the filter barrel is fixed in the rear cavity section of the base body, and the cavity diameter of the barrel cavity of the filter barrel is the same as the cavity diameter of the front cavity section of the base body.

3. A sealing plug receiver according to claim 2, characterized in that: A rear convex ring portion is formed on the filter barrel; the rear convex ring portion is arranged along the bottom edge of the filter barrel, and the rear convex ring portion is matched and nested with the rear cavity section of the base.

4. A sealing plug receiver according to claim 2 or 3, characterized in that: It also includes a docking joint; one end of the docking joint is connected to the rear end of the base, and a retaining ring is formed on the docking joint; the retaining ring cooperates with the rear end surface of the front cavity section of the base to clamp and fix the filter barrel.

5. An automatic paint recovery pipeline for a painting robot, comprising a paint delivery pipe, a sealing plug, a receiver and a paint sprayer; one end of the paint delivery pipe is connected to the paint inlet of the receiver, and the other end of the paint delivery pipe is connected to a paint supply source when in use; the paint outlet of the receiver is connected to the paint sprayer through a pipeline, and an air source inlet is provided on the pipeline between the receiver and the paint sprayer; the sealing plug is arranged in the receiver; and it is characterized in that: The receiver is the sealing plug receiver according to claim 1; a scraping wall portion is formed on the sealing plug; the scraping wall portion is matched and nested with the barrel cavity of the filter barrel, and the cross-sectional diameter of the scraping wall portion is larger than the barrel cavity diameter of the paint supply pipe; when the sealing plug is against the barrel bottom of the filter barrel: the scraping wall portion of the sealing plug is between the first through hole and the second through hole of the filter barrel; a front connecting space is formed between the front end of the sealing plug and the barrel cavity wall of the filter barrel, and the first through hole of the filter barrel is connected to the barrel mouth through the front connecting space; a rear connecting space is formed between the rear end of the sealing plug and the barrel bottom of the filter barrel, and the second through hole of the filter barrel is connected to the through hole through the rear connecting space.

6. The automatic paint recovery pipeline of a painting robot according to claim 5 is characterized by: The sealing plug is made of soft material; both ends of the sealing plug are large heads, the circumferential surfaces of each large head are the scraping wall parts, deformation cavities are formed in each large head, and the scraping wall parts on each large head are located at the periphery of their own deformation cavities; the front and rear end surfaces of the sealing plug are convex structures, so that when the sealing plug is against the bottom of the filter barrel: the front connecting space can be formed between the front end of the sealing plug and the barrel cavity wall of the filter barrel, and the rear connecting space is formed between the rear end of the sealing plug and the barrel bottom of the filter barrel.

7. The automatic paint recovery pipeline of a painting robot according to claim 5, characterized in that: The sealing plug is made of soft material; the scraping wall portion is a front annular fin and a rear annular fin integrally formed on the sealing plug; the front end of the sealing plug is formed with a front convex column portion protruding from the front annular fin, and the rear end of the sealing plug is formed with a rear convex column portion protruding from the rear annular fin; the cross-sectional diameters of the front convex column portion and the rear convex column portion are each smaller than the cross-sectional diameter of the sealing plug, so that when the sealing plug abuts against the bottom of the filter barrel: the front end of the sealing plug can form the front connecting space with the barrel cavity wall of the filter barrel, and the rear connecting space is formed between the rear end of the sealing plug and the barrel bottom of the filter barrel.

8. The automatic paint recovery pipeline of a painting robot according to claim 5, characterized in that: It also includes a main control module, a front detector and a rear detector; a detected object is arranged in the sealing plug; an air inlet valve is arranged on the air source inlet; the front detector, the rear detector and the air inlet valve are all electrically connected to the main control module, and the front detector and the rear detector are both used to detect the detected object in the sealing plug, the detection end of the front detector is arranged near the end of the paint delivery pipe away from the receiver, and the detection end of the rear detector is arranged near the paint inlet of the receiver.

9. The automatic paint recovery pipeline of a painting robot according to claim 8, characterized in that: It also includes a color-changing valve; the color-changing valve is electrically connected to the main control module, and the color-changing valve includes a connecting seat and a color picker; the connecting seat is provided with a plurality of paint inlet channels; the color picker and the connecting seat can move relatively to each other, so that the paint inlet end of the color picker can be switched between various paint inlet channels and connected to the paint outlet end of the paint inlet channel; the paint outlet of the receiver is connected to the paint inlet end of a paint inlet channel through a pipeline; the paint outlet end of the color picker is connected to the paint sprayer through a pipeline; the air inlet valve is connected to the internal channel of the color picker.

10. The automatic paint recovery pipeline of a painting robot according to claim 5, characterized in that: When in use, one end of the paint supply pipe is connected to a paint supply source through a temporary reservoir; the temporary reservoir is a pipe fitting, one pipe opening of the temporary reservoir is a first pipe opening, and the other pipe opening of the temporary reservoir is a second pipe opening. The first pipe opening is connected to an end of the paint supply pipe away from the receiver, the cross-section of the first pipe opening is greater than or equal to the cross-section of the scraping wall portion of the sealing plug, and the cross-section of the second pipe opening is smaller than the cross-section of the scraping wall portion of the sealing plug.

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