Device and method for applying primer to workpiece surface

Abstract

The present invention provides a device for applying a primer to the surface of a workpiece, and relates to the technical field of brushing devices, including a primer coating mechanism, a robot and a placement table; the primer coating mechanism includes a coating head and a syringe; the robot includes a manipulator and a clamping mechanism; a plurality of storage chambers are provided on the placement table, and a primer coating mechanism is vertically placed corresponding to the opening of each storage chamber. A primer coating mechanism is provided to store the primer on a syringe, and the primer is pushed by a piston so that the primer is extruded through a discharge head into a seat body provided with a through hole, so that the primer is transported to a felt sleeved on the lower part of the seat body, and the primer coating is achieved by contact between the felt and the workpiece. The primer coating mechanism is vertically placed on the storage chamber, and part of the seat body and the storage chamber are detachably clamped and fixed, and the felt at the lower part of the seat body is sealed and placed in the storage chamber to prevent the felt from contacting with the air for a long time, and the primer is transported to the felt through the internal through hole, and the contact with the external air is reduced. The present application also provides a method for applying a primer to the surface of a workpiece.

Description

Technical Field

[0001] The invention relates to the technical field of coating devices, and in particular to a device and a method for coating a workpiece surface with a primer. Background Art

[0002] At present, in the process of automobile glass production and assembly, primer needs to be applied before installing the windshield. The glass plate needs to be fixed to the door frame with glue or accessories are installed on the glass plate with glue. Generally, primer needs to be applied to the glass and door frame first to ensure the bonding effect between the glass and the glue.

[0003] Among them, the primer is mostly applied with a brush or an ordinary brush bottle. There are the following problems with using a brush: when applying with a brush, the primer needs to be frequently dipped, which inevitably requires the primer to be exposed to the air for a long time, which is easy to cause the primer to solidify and clump, and the brush is also easy to harden. At the same time, it is difficult to control the uniformity of the primer applied with a brush. There are the following problems with applying the primer with a brush bottle: using a brush bottle to apply the primer greatly improves the problem of primer hardening, but when applying the primer with a brush bottle, once the operator applies too much force, the primer is easy to overflow too much, resulting in a large amount of overflow.

[0004] As mentioned above, the existing method of applying primer is generally to apply the primer to glass and door frames manually. When applying, using a simple primer tool to apply, it is easy to cause quality problems such as uneven primer thickness and primer trajectory deviation. The coating is completed manually, resulting in low work efficiency. In addition, since the primer is easy to dry when in contact with the air, there will be problems such as solidification and blockage during liquid supply and insufficient liquid supply, which reduces the number of workpieces coated by the coating head and affects the coating efficiency. Summary of the invention

[0005] The invention discloses a device and a method for applying a primer on a workpiece surface, aiming to improve the problems of uneven coating and easy solidification and clogging caused by manual primer application.

[0006] The present invention adopts the following scheme:

[0007] A device for applying a primer to a workpiece surface, comprising:

[0008] A primer coating mechanism comprises a coating head and a syringe, wherein the syringe comprises a syringe for storing a primer and a piston movably sleeved inside the syringe, the syringe has a discharge head, the piston relatively moves along the inside of the syringe, and the primer is extruded or sucked in through the discharge head, the coating head comprises a seat body and a felt, the seat body is provided with a through hole inserted and sleeved with the discharge head, the felt is elastically sleeved on the lower part of the seat body, and the lower surface of the felt protrudes from the lower surface of the seat body, and the through hole is connected to the felt to transport the primer extruded by the discharge head into the felt;

[0009] The robot comprises a manipulator and a clamping mechanism configured on the manipulator, wherein the clamping mechanism comprises a clamping portion, a pushing portion and a receiving portion, wherein the clamping portion is used to clamp the seat body so that the syringe is clamped and fixed in the receiving portion, and the pushing portion is arranged opposite to the piston of the syringe placed in the receiving portion so as to push the piston to extrude the primer;

[0010] A placing table is provided with a plurality of storage chambers, and a primer coating mechanism is vertically placed corresponding to the opening of each storage chamber, the base portion of the primer coating mechanism is clamped at the opening of the storage chamber, and is detachably fastened to the storage chamber to seal the storage chamber, and the felt is relatively sealed and placed in the storage chamber.

[0011] As a further improvement, the base body is composed of a cover body with a boss, a rectangular block vertically arranged on the upper end surface of the cover body, and a clamping plate configured with a boss at the lower end of the cover body and used to elastically fit the felt; the boss of the cover body is adapted to the opening of the accommodating chamber to fit and seal the accommodating chamber; the felt can be detachably fitted in the clamping plate, and partially exposed from the outside of the clamping plate to contact the workpiece to be coated with primer.

[0012] As a further improvement, the clamping portion clamps and fixes the rectangular block so that the syringe arranged on the seat body is placed in the accommodating portion; a socket head is provided on the upper end surface of the rectangular block, and the discharge head of the syringe is vertically inserted and fixed to the socket head and connected to the internal through hole, thereby delivering the primer extruded by the syringe to the felt.

[0013] As a further improvement, O-rings are embedded on the lower end surface of the cover body and the outer side surface of the boss.

[0014] As a further improvement, the clamping mechanism has a mounting plate, which is assembled to the manipulator, and the clamping part and the pushing part are respectively arranged at the lower end and the upper end of the mounting plate, and the above-mentioned accommodating part is formed between the mounting plate, the clamping part and the pushing part, and the seat body is clamped and fixed via the clamping part so that the piston position of the syringe is opposite to the pushing part, thereby extruding the primer placed in the syringe under the telescopic push of the pushing part.

[0015] As a further improvement, the clamping portion includes at least one pneumatic clamping jaw, and the jaws of the pneumatic clamping jaw are relatively close or far away, correspondingly clamping and fixing or placing the seat body.

[0016] As a further improvement, the pushing part has a telescopic push rod, which pushes along the upper and lower ends of the mounting plate. The head of the syringe is relatively fastened to the seat body, and the tail of the syringe is facing the pushing part, so that the push rod is telescopically abutted against the piston located in the syringe.

[0017] As a further improvement, the syringe has an external black coating to conceal the primer inside the syringe; a pointer is provided at the end of the push rod away from the piston, and a long scale dial is correspondingly provided on the mounting plate. The push rod moves along the direction of the piston so that the pointer points to the scale of the scale dial.

[0018] As a further improvement, the receiving chamber is connected to an external vacuum pumping device to evacuate air from the sealed receiving chamber.

[0019] The present application further provides a method for applying a primer to a workpiece surface, wherein the primer is applied using the above-mentioned device, comprising the following steps:

[0020] S1: vertically placing a plurality of the primer coating mechanisms on the placement table, and the bases are partially clamped at the openings of the accommodation chamber;

[0021] S2: the manipulator moves close to the placement table, the clamping part of the clamping mechanism clamps the part of the seat body located above the accommodating chamber, and the primer coating mechanism is clamped and fixed in the accommodating part of the clamping mechanism, so that the pushing part is directly opposite to the piston of the syringe of the primer coating mechanism;

[0022] S3: the manipulator moves to the workpiece to be coated with the primer, the pushing part retracts and pushes the piston in the syringe to extrude the primer into the through hole of the seat body, and flows through the through hole to the felt sleeved on the lower part of the seat body, thereby controlling the movement of the manipulator on the workpiece, so that the felt coats the primer on the workpiece;

[0023] S4: After coating is completed, the robot is moved to place the primer coating mechanism back into the receiving chamber of the placement table for sealing, the clamping part releases the clamping and fastening of the seat body, and the robot moves to the initial position.

[0024] By adopting the above technical solution, the present invention can achieve the following technical effects:

[0025] The device and method for applying primer to the surface of a workpiece of the present application, by providing a primer coating mechanism, the primer is stored on the syringe, and the primer is pushed by the piston to be extruded through the discharge head into the seat body provided with a through hole, so that the primer is delivered to the felt sleeved at the lower part of the seat body, and the primer coating is achieved by the contact between the felt and the workpiece. Among them, multiple primer coating mechanisms are placed vertically on the receiving chamber, and part of the seat body and the receiving chamber can be detachably clamped and fixed, so that the felt placed at the lower part of the seat body is sealed in the receiving chamber, avoiding the felt with the primer from being in contact with the air for a long time, and the primer is delivered to the felt through the internal through hole, and the contact with the external air is reduced, avoiding the problem of solidification and blockage during liquid supply. In addition, through the clamping mechanism configured on the manipulator, the clamping mechanism is driven by the manipulator to clamp and fix part of the seat body located on the receiving chamber through the clamping part, so that the syringe is fastened in the receiving part, and the pushing part is directly opposite to the piston of the syringe, so as to push the piston to extrude the primer, thereby realizing the liquid supply to the felt. During the coating process, the robot drives the coating head of the primer coating mechanism to move relatively, so that the felt arranged at the lower part of the seat body contacts the workpiece, and the pushing part moves the abutment piston to extrude the primer onto the felt, realizing an automated primer coating process with uniform coating and high coating efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 1 is a schematic structural diagram of a device for applying a primer to a workpiece surface according to Embodiment 1 of the present invention;

[0028] Figure 2 yes Figure 1 A schematic diagram of the structure between the robot and the primer coating mechanism;

[0029] Figure 3 yes Figure 2 A schematic diagram of the structure between the clamping mechanism and the primer coating mechanism;

[0030] Figure 4 yes Figure 3 A schematic diagram of the structure at a first viewing angle, wherein the right side is a cross-sectional view;

[0031] Figure 5 yes Figure 3 A schematic diagram of the structure at a second viewing angle, wherein the right side is a schematic diagram of a partial disassembly;

[0032] Figure 6 yes Figure 3Disassembly diagram from a third-person perspective;

[0033] Figure 7 1 is a schematic structural diagram of a primer coating mechanism of a device for applying a primer coating to a workpiece surface according to Embodiment 1 of the present invention, wherein the right side is a partially disassembled schematic diagram;

[0034] Figure 8 yes Figure 7 Disassembly diagram from another perspective;

[0035] Fig. 9 It is a schematic structural diagram of a placement table of a device for applying a primer to a workpiece surface according to Embodiment 1 of the present invention;

[0036] Fig.10 yes Fig. 9 Schematic diagram of the structure from other perspectives.

[0037] Icons: 1-priming coating mechanism; 11-coating head; 111-base; 1111-cover; 1112-boss; 1113-rectangular block; 1114-clamping plate; 1115-socket; 112-felt; 113-through hole; 12-syringe; 121-syringe cylinder; 122-piston; 123-discharging head; 2-robot; 21-manipulator; 22-gripping mechanism; 221-gripping part; 2211-pneumatic clamp; 222-pushing part; 2221-push rod; 223-accommodating part; 224-mounting plate; 225-pointer; 226-dial; 3-placing table; 31-accommodating chamber; 311-opening; 32-temporary storage area. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the invention claimed for protection, but merely represents the selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0039] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0040] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0041] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0043] Example 1

[0044] Combination Figures 1 to 8 This embodiment provides a device for applying a primer to a workpiece surface, including a primer coating mechanism 1, a robot 2 and a placement table 3.

[0045] The primer coating mechanism 1 includes a coating head 11 and a syringe 12. The syringe 12 includes a syringe 121 for storing the primer and a piston 122 movably sleeved inside the syringe 121. The syringe 121 has a discharge head 123, and the piston 122 moves relatively along the inside of the syringe 121 to extrude or suck the primer through the discharge head 123. The coating head 11 includes a seat body 111 and a felt 112. The seat body 111 is provided with a through hole 113 inserted and sleeved with the discharge head 123. The felt 112 is elastically sleeved on the lower part of the seat body 111, and the lower surface of the felt 112 protrudes from the lower surface of the seat body 111. The through hole 113 is connected to the felt 112 to transport the primer extruded by the discharge head 123 into the felt 112. The primer is sucked into the syringe 121 by the piston 122 to fill the syringe 121 with primer, or extruded into the through hole 113 inserted into the discharge head 123, and transported to the felt 112 along the through hole 113. The through hole 113 located in the seat 111 is connected to the discharge head 123 of the syringe 121 at one end, and connected to the felt 112 at the lower part of the seat 111 at the other end, so as to transport the primer to the felt 112 so that it can be fully absorbed.

[0046] The robot 2 includes a manipulator 21 and a clamping mechanism 22 configured on the manipulator 21. Preferably, the manipulator 21 is a six-axis manipulator 21. The clamping mechanism 22 includes a clamping portion 221, a pushing portion 222 and a receiving portion 223. The clamping portion 221 is used to clamp the seat body 111 so that the syringe 12 is clamped and fixed in the receiving portion 223. The pushing portion 222 is arranged opposite to the piston 122 of the syringe 12 placed in the receiving portion 223 to push the piston 122 to extrude the primer. Through the clamping mechanism 22 configured on the manipulator 21, the clamping mechanism 22 is driven by the manipulator 21 to clamp and fix the seat body 111 through the clamping portion 221, so that the syringe 12 is fastened in the receiving portion 223, and the pushing portion 222 is opposite to the piston 122 of the syringe 12 to push the piston 122 to extrude the primer, thereby realizing the liquid supply to the felt 112.

[0047] In this embodiment, the clamping mechanism 22 has a mounting plate 224 which is assembled to the manipulator 21. The clamping part 221 and the pushing part 222 are respectively arranged at the lower end and the upper end of the mounting plate 224, and the accommodating part 223 as described above is formed between the mounting plate 224, the clamping part 221 and the pushing part 222. The seat body 111 is clamped and fixed via the clamping part 221 so that the position of the piston 122 of the syringe barrel 121 is directly opposite to the pushing part 222, and thus the undercoat placed in the syringe barrel 121 is extruded under the telescopic push of the pushing part 222. An inverted U-shaped accommodating part 223 is formed between the mounting plate 224, the clamping part 221 arranged at the lower end of the mounting plate 224, and the pushing part 222 arranged at the upper end of the mounting plate 224. When the clamping part 221 clamps and fixes the seat body 111, the syringe 12 is relatively fixed and placed in the accommodating part 223, and the upper part of the seat body 111 on the coating head 11 is clamped and fixed by the clamping part 221. The lower part of the seat body 111 is arranged relatively far away from one end of the accommodating part 223 and is outside, so that the felt 112 sleeved on the lower part of the seat body 111 protrudes relatively. Driven by the manipulator 21, the felt 112 contacts the workpiece to coat the undercoat onto the workpiece.

[0048] Wherein, the clamping part 221 includes at least one pneumatic gripper 2211. The claw parts of the pneumatic gripper 2211 approach or move away from each other correspondingly to clamp and fix or place the seat body 111. The pushing part 222 has a telescopic push rod 2221. The push rod 2221 pushes along the up-and-down direction of the mounting plate 224. The head of the syringe barrel 121 is relatively fastened on the seat body 111, and the tail of the syringe barrel 121 is directly opposite to the pushing part 222, so that the telescopic push rod 2221 abuts against the piston 122 located in the syringe barrel 121. The piston 122 moves relative to the syringe barrel 121 under the push of the push rod 2221, and thus the undercoat accommodated in the syringe barrel 121 is extruded.

[0049] Please refer to Figure 1 、 Fig. 9 and Fig.10 As shown in, there are a plurality of accommodating chambers 31 provided on the placing table 3, and a bottom coating mechanism 1 is vertically placed correspondingly at the opening 311 of each accommodating chamber 31. The base part of the bottom coating mechanism 1 is clamped at the opening 311 of the accommodating chamber 31 and is detachably fastened to the accommodating chamber 31 to seal the accommodating chamber 31, and the felt 112 is relatively sealed and placed in the accommodating chamber 31.

[0050] Specifically, the seat body 111 is placed on the receiving chamber 31 to achieve relative sealing. The seat body 111 is composed of a cover body 1111 with a boss 1112, a rectangular block 1113 vertically arranged on the upper end surface of the cover body 1111, and a clamping plate 1114 configured on the boss 1112 at the lower end of the cover body 1111 and used to elastically fit the felt 112. The boss 1112 of the cover body 1111 is matched with the opening 311 of the receiving chamber 31 to cover the sealed receiving chamber 31. The cover 1111 is covered and abutted against the opening 311 of the receiving chamber 31 through the boss 1112, realizing a detachable mutual fastening and sealing, ensuring that the primer coating mechanism 1 is placed vertically on the receiving chamber 31, so that part of the base 111 and the receiving chamber 31 can be detachably clamped and fixed, so as to seal the felt 112 placed at the lower part of the base 111 in the receiving chamber 31, and avoid the felt 112 with the primer being in contact with the air for a long time, which makes the primer easy to dry and affects the coating effect. The felt 112 is detachably sleeved in the clamping plate 1114, and the felt 112 is partially exposed outside the clamping plate 1114 to contact the workpiece to be coated with the primer.

[0051] Preferably, a convex corner is provided on the splint 1114, and the convex corner extends outwardly and is placed on the outer side of the lower end of the splint 1114, and is connected to the side of the splint 1114 through a rounded corner. The convex corner is provided on one side of the bottom end of the splint 1114, so that when coating a workpiece with a right-angled edge, it can be ensured that the workpiece is evenly coated with the primer without white leakage. The clamping portion 221 clamps and fixes the rectangular block 1113 so that the syringe 12 arranged on the seat body 111 is vertically placed in the accommodating portion 223. A socket 1115 is provided on the upper end surface of the rectangular block 1113, and the discharge head 123 of the syringe 121 is vertically inserted and fixed to the socket 1115, and is connected to the internal through hole 113, so as to transport the primer extruded by the syringe 121 to the felt 112. When the primer coating mechanism 1 is placed on the placement table 3, the rectangular block 1113 is located at the upper end of the cover body 1111, so that it is exposed to the outside, which is convenient for the manipulator 21 to drive the pneumatic clamping jaws 2211 of the clamping part 221 to open and close relatively so as to clamp the rectangular block 1113, thereby clamping the primer coating mechanism 1 away from the placement table 3.

[0052] Preferably, an O-ring (not shown) is embedded in the lower end surface of the cover body 1111 and the outer side surface of the boss 1112. The O-ring is a sealing ring, so that when the cover body 1111 covers the opening 311 of the accommodating chamber 31, the cavity wall of the opening 311 adapted to the lower end surface of the cover body 1111 and the boss 1112 arranged on the end surface thereof is in sealed contact with the cover body 1111 through the O-ring, making the cover more tightly.

[0053] See also Figure 5, the syringe 121 has an external black coating to shield the primer in the syringe 121. Among them, the black coating is a light-proof coating to prevent the external light source from directly irradiating the primer in the syringe 121, so that the primer is used and the life span is increased. Correspondingly, the black coating covers the syringe 121, so that the naked eye cannot judge the remaining amount of the primer inside the syringe 121, which is not convenient for the extrusion discharge of the syringe 121. In order to solve this problem, the clamping mechanism 22 is provided with an identification member (not shown) to observe the remaining amount of the primer inside the syringe 121. Specifically, a pointer 225 is provided at one end of the push rod 2221 away from the piston 122, and a long scale plate 226 is correspondingly provided on the mounting plate 224. The push rod 2221 moves along the direction of the piston 122, so that the pointer 225 points to the scale of the scale plate 226. Through the change of the pointer 225 on the scale plate 226, the remaining amount of the primer in the syringe 121 is read accordingly.

[0054] Furthermore, the receiving chamber 31 is connected to an external vacuum pumping device (not shown) to extract air from the sealed receiving chamber 31. In this embodiment, the receiving chamber 31 is a closed chamber having only an opening 311. The opening 311 is tightly closed by the cover 1111, so that the receiving chamber 31 is in a relatively sealed state. By connecting the external vacuum pumping device to the receiving chamber 31, the excess air in the chamber is extracted. After the vacuum pumping device extracts the air, it is closed, ensuring that the felt 112 placed in the chamber is in a vacuum state.

[0055] See also Fig. 9 and Fig.10 A temporary storage area 32 is provided on one side of the placement table 3, and a receiving chamber 31 is protruded from the temporary storage area 32 to distinguish it from other receiving chambers 31. The receiving chamber 31 placed in the temporary storage area 32 is used to place the primer coating mechanism 1 that has not been used during the coating process, so as to avoid confusion between the used primer coating mechanism 1 and the unused primer coating mechanism 1, and facilitate the control of the primer coating mechanism 1.

[0056] Example 2

[0057] The present application further provides a method for applying a primer to a workpiece surface, wherein the primer is applied using the above-mentioned device, and the method comprises the following steps:

[0058] S1: multiple primer coating mechanisms 1 are vertically placed on the placement table 3 , and the bases are partially stuck in the opening 311 of the accommodating chamber 31 .

[0059] Specifically, the cover 1111 on the seat 111 is relatively covered and placed above the opening 311 of the accommodation chamber 31, and the boss 1112 is abutted against the cavity wall of the opening 311, so that part of the seat 111 is accommodated in the accommodation chamber 31, and the felt 112 located at the lower part of the seat 111 is relatively sealed and placed in the accommodation chamber 31 to prevent the felt 112 from contacting the air for a long time. The rectangular block 1113 located at the upper part of the seat 111 is exposed to the outside, so that the manipulator 21 drives the clamping part 221 to clamp and fix the rectangular block 1113, and clamps and fixes the primer coating mechanism 1 to the clamping mechanism 22.

[0060] S2: The manipulator 21 moves close to the placement table 3, and the clamping portion 221 of the clamping mechanism 22 clamps the portion of the seat body 111 located above the accommodating chamber 31, and clamps and fixes the primer coating mechanism 1 in the accommodating portion 223 of the clamping mechanism 22, so that the pushing portion 222 is opposite to the piston 122 of the syringe 12 of the primer coating mechanism 1.

[0061] Specifically, the seat body 111 is clamped and fixed via the clamping portion 221 so that the piston 122 of the syringe 121 is positioned opposite to the pushing portion 222, thereby extruding the primer placed in the syringe 121 under the telescopic pushing of the pushing portion 222. The syringe 12 is relatively fixed in the accommodating portion 223, and the upper portion of the seat body 111 on the coating head 11 is clamped and fixed by the clamping portion 221, and the lower portion of the seat body 111 is relatively far away from one end of the accommodating portion 223 and arranged outside, so that the felt 112 fitted on the lower portion of the seat body 111 is relatively protruding, and the felt 112 is brought into contact with the workpiece under the drive of the manipulator 21.

[0062] S3: The manipulator 21 moves to the workpiece to be coated with the primer, and the pushing part 222 retracts and pushes the piston 122 in the syringe 12 to extrude the primer into the through hole 113 of the seat body 111, and flows through the through hole 113 to the felt 112 mounted on the lower part of the seat body 111, thereby controlling the movement of the manipulator 21 on the workpiece so that the felt 112 applies the primer to the workpiece.

[0063] Specifically, the pusher 222 has a telescopic push rod 2221, which pushes the piston 122 in the up-down direction. The head of the syringe 121 is relatively fixed to the seat 111, and the tail of the syringe 121 faces the pusher 222, so that the push rod 2221 is telescopically abutted against the piston 122 in the syringe 121. The piston 122 moves relative to the syringe 121 under the push of the push rod 2221, thereby squeezing out the primer contained in the syringe 121. Driven by the manipulator 21, the felt 112 is brought into contact with the workpiece, and the primer is applied to the workpiece.

[0064] S4: After coating is completed, the mobile manipulator 21 puts the primer coating mechanism 1 back into the receiving chamber 31 of the placement table 3 for sealing, the clamping part 221 releases the clamping and fastening of the base body 111, and the manipulator 21 moves to the initial position.

[0065] Specifically, the robot 21 drives the primer coating mechanism 1 to be placed on the opening 311 of the receiving chamber 31 in the vertical direction, and relatively presses the seat body 111 so that the seat body 111 is closely matched with the opening 311. Then, the clamping part 221 is relatively opened to be away from the seat body 111, and the robot 21 drives it back to the initial position to wait for the next coating process.

[0066] The above are only preferred implementations of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention.

Claims

1. A device for applying a primer to a workpiece surface, characterized in that: include: A primer coating mechanism comprises a coating head and a syringe, wherein the syringe comprises a syringe for storing a primer and a piston movably sleeved inside the syringe, the syringe has a discharge head, the piston relatively moves along the inside of the syringe, and the primer is extruded or sucked in through the discharge head, the coating head comprises a seat body and a felt, the seat body is provided with a through hole inserted and sleeved with the discharge head, the felt is elastically sleeved on the lower part of the seat body, and the lower surface of the felt protrudes from the lower surface of the seat body, and the through hole is connected to the felt to transport the primer extruded by the discharge head into the felt; The robot comprises a manipulator and a clamping mechanism configured on the manipulator, wherein the clamping mechanism comprises a clamping portion, a pushing portion and a receiving portion, wherein the clamping portion is used to clamp the seat body so that the syringe is clamped and fixed in the receiving portion, and the pushing portion is arranged opposite to the piston of the syringe placed in the receiving portion so as to push the piston to extrude the primer; A placing table, wherein a plurality of receiving chambers are arranged on the placing table, and a primer coating mechanism is vertically placed at the opening of each receiving chamber, and a base portion of the primer coating mechanism is clamped at the opening of the receiving chamber and is detachably fastened to the receiving chamber to seal the receiving chamber, and the felt is relatively sealed and placed in the receiving chamber; The seat body is composed of a cover body with a boss, a rectangular block vertically arranged on the upper end surface of the cover body, and a clamping plate configured with a boss at the lower end of the cover body and used to elastically fit the felt; the boss of the cover body is adapted to the opening of the receiving chamber to fit and seal the receiving chamber; the felt is detachably fitted in the clamping plate, and a part of it is exposed outside the clamping plate to contact the workpiece to be coated with the primer; The clamping mechanism has a mounting plate, which is assembled to the manipulator. The clamping part and the pushing part are respectively arranged at the lower end and the upper end of the mounting plate, and the above-mentioned accommodating part is formed between the mounting plate, the clamping part and the pushing part. The seat body is clamped and fixed via the clamping part so that the piston position of the syringe is opposite to the pushing part, so that the primer placed in the syringe is extruded under the telescopic push of the pushing part.

2. The device for applying a primer to a workpiece surface according to claim 1, characterized in that: The clamping portion clamps and fixes the rectangular block so that the syringe arranged on the seat body is placed in the accommodating portion; a socket head is provided on the upper end surface of the rectangular block, and the discharge head of the syringe is vertically inserted and fixed to the socket head and connected to the internal through hole, thereby delivering the primer extruded by the syringe to the felt.

3. The device for applying a primer to a workpiece surface according to claim 1, characterized in that: O-rings are embedded on the lower end surface of the cover body and the outer side surface of the boss.

4. The device for applying a primer to a workpiece surface according to claim 1, characterized in that: The clamping portion includes at least one pneumatic clamping jaw, and the jaws of the pneumatic clamping jaw are relatively close or far away from each other to clamp, fix or place the seat body accordingly.

5. The device for applying a primer to a workpiece surface according to claim 1, characterized in that: The pushing part has a telescopic push rod, which is pushed along the upper and lower ends of the mounting plate. The head of the syringe is relatively fastened to the seat body, and the tail of the syringe faces the pushing part, so that the push rod is telescopically abutted against the piston in the syringe.

6. The device for applying a primer to a workpiece surface according to claim 5, characterized in that: The syringe has an outer black coating to conceal the primer in the syringe; a pointer is provided at the end of the push rod away from the piston, and a long scale plate is correspondingly provided on the mounting plate. The push rod moves along the direction of the piston so that the pointer points to the scale of the scale plate.

7. The device for applying a primer to a workpiece surface according to claim 1, characterized in that: The receiving chamber is connected to an external vacuum pumping device for extracting air from the sealed receiving chamber.

8. A method for applying a primer to a workpiece surface, characterized in that: The method of applying a primer using the device as described in any one of claims 1 to 7 comprises the following steps: S1: vertically placing a plurality of the primer coating mechanisms on the placement table, and the bases are partially clamped at the openings of the accommodation chamber; S2: the manipulator moves close to the placement table, the clamping part of the clamping mechanism clamps the part of the seat body located above the accommodating chamber, and the primer coating mechanism is clamped and fixed in the accommodating part of the clamping mechanism, so that the pushing part is directly opposite to the piston of the syringe of the primer coating mechanism; S3: the manipulator moves to the workpiece to be coated with the primer, the pushing part retracts and pushes the piston in the syringe to extrude the primer into the through hole of the seat body, and flows through the through hole to the felt sleeved on the lower part of the seat body, thereby controlling the movement of the manipulator on the workpiece, so that the felt coats the primer on the workpiece; S4: After coating is completed, the robot is moved to place the primer coating mechanism back into the receiving chamber of the placement table for sealing, the clamping part releases the clamping and fastening of the seat body, and the robot moves to the initial position.

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