CN211190753U - Device for coating bottom coat on surface of workpiece - Google Patents

Abstract

The utility model provides a device for coating a primer on the surface of a workpiece, which relates to the technical field of painting devices and comprises a primer coating mechanism, a robot and a placing table; the primary coating mechanism comprises a coating head and an injector; the robot comprises a manipulator and a clamping mechanism; the placing table is provided with a plurality of containing chambers, and the opening of each containing chamber is vertically provided with a bottom coating mechanism correspondingly. The bottom coating mechanism is arranged to store the bottom coating on the needle cylinder, the bottom coating is extruded into the seat body provided with the through hole through the discharge head by pushing of the piston, and therefore the bottom coating is conveyed to the felt sleeved on the lower portion of the seat body and is coated by the contact of the felt and a workpiece. The bottom coating mechanism is vertically placed on the containing chamber, part of the base body and the containing chamber can be detached, clamped and fixed, the felt at the lower part of the base body is hermetically placed in the containing chamber, the felt is prevented from being in contact with air for a long time, the bottom coating is conveyed to the felt through the inner through hole, the contact with the outside air is reduced, and the situation that the through hole is blocked due to solidification during liquid supply is avoided.

Description

Device for coating bottom coat on surface of workpiece

Technical Field

The utility model relates to a paint technical field with a brush, particularly, relate to a device that is used for work piece surface coating primary coat.

Background

At present, in the production and assembly process of automobile glass, a base coat needs to be coated before the windshield glass is installed. The glass plate is fixed on the door frame by glue or accessories are arranged on the glass plate by glue, and the glass and the door frame are generally coated with a base coat to ensure the bonding effect between the glass and the glue.

Most of the base coats are coated by using a brush or a common brush bottle. The following problems are associated with the use of brush application: when the brush is used for coating, the base coat needs to be frequently dipped, the base coat is required to be exposed in the air for a long time, the solidification and agglomeration of the base coat are easy to cause, the brush is also easy to harden, and the uniformity of the base coat coated by the brush is difficult to control. The following problems exist for priming with a brush bottle: the problem of hardening of the base coat is greatly improved by coating the base coat with the brush bottle, but when the base coat is coated with the brush bottle, once the force of an operator is large, the base coat is easy to overflow too much, so that a large amount of overflow is caused.

Existing priming methods, as mentioned above, typically apply the primer to the glass and door frame by manual operation. When the primer is coated, a simple primer tool is used for coating, so that the quality problems of uneven primer thickness, primer track deviation and the like are easily caused. The coating is done manually, resulting in low work efficiency. In addition, the contact between the base coat and air is easy to dry, so that the problems of solidification and blockage during liquid supply, insufficient liquid supply and the like can occur, the number of workpieces coated by the coating head is reduced, and the coating efficiency is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a device for work piece surface coating primary coat aims at improving the manual work and scribbles the problem that the coating that the primary coat leads to is inhomogeneous and solidify the jam easily.

The utility model adopts the following scheme:

an apparatus for coating a surface of a workpiece with a primer, comprising:

the bottom coating mechanism comprises a coating head and an injector, the injector comprises a needle cylinder for storing a bottom coating and a piston movably sleeved in the needle cylinder, the needle cylinder is provided with a discharge head, the piston relatively moves along the interior of the needle cylinder and extrudes or sucks the bottom coating through the discharge head, the coating head comprises a base body and a felt, the base body is provided with a through hole which is inserted and sleeved with the discharge head, the felt is elastically sleeved at the lower part of the base body, the lower surface of the felt protrudes out of the lower surface of the base body, and the through hole is connected to the felt so as to convey the bottom coating extruded by the discharge head into the felt;

the clamping mechanism comprises a clamping part, a pushing part and an accommodating part, the clamping part is used for clamping the base body, so that the syringe clamp is fixed in the accommodating part, and the pushing part is arranged opposite to a piston of the syringe in the accommodating part so as to push the piston to extrude out the bottom coat;

the bottom coating mechanism is arranged on the containing chambers, the base part of the bottom coating mechanism is clamped at the opening of the containing chambers and detachably fastened with the containing chambers to seal the containing chambers, and the felt is arranged in the containing chambers in a relatively sealed manner.

As a further improvement, 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 which is arranged on the boss at the lower end of the cover body and is used for elastically sleeving the felt; the boss of the cover body is matched with the opening of the containing chamber so as to seal the containing chamber in a sleeved mode; the felt is detachably sleeved in the clamping plate, and part of the felt is exposed out of the outer side of the clamping plate and is used for contacting a workpiece to be coated with primer.

As a further improvement, the clamping part clamps and fixes the rectangular block, so that the syringe arranged on the seat body is placed in the accommodating part; the upper end surface of the rectangular block is provided with a bearing head, and a discharge head of the needle cylinder is vertically inserted and fixed onto the bearing head and communicated to the through hole inside, so that the bottom coat extruded by the needle cylinder is conveyed to the felt.

As a further improvement, the lower end face of the cover body and the outer side face of the boss are respectively nested with an O-shaped ring.

As a further improvement, the clamping mechanism has a mounting plate, the mounting plate is assembled on the manipulator, the clamping part and the pushing part are respectively arranged at the lower end and the upper end of the mounting plate, the clamping part and the pushing part form the accommodating part, and the seat body is clamped and fixed by the clamping part, so that the piston of the needle cylinder is opposite to the pushing part, and the bottom coat arranged in the needle cylinder is extruded under the telescopic pushing of the pushing part.

As a further improvement, the clamping part comprises at least one pneumatic clamping jaw, and the jaw part of the pneumatic clamping jaw is relatively close to or far away from the clamping part and correspondingly clamps and fixes or places the seat body.

As a further improvement, the pushing part is provided with a telescopic push rod, the push rod pushes along the upper end and the lower end of the mounting plate, the head of the needle cylinder is relatively fastened on the seat body, and the tail of the needle cylinder is just opposite to the pushing part, so that the push rod is in telescopic abutting joint with a piston positioned in the needle cylinder.

As a further improvement, the syringe has an external black coating layer for shielding the bottom coating in the syringe; the push rod is kept away from the one end of piston is equipped with a pointer, the correspondence is equipped with an elongated calibrated scale on the mounting panel, the push rod is followed the piston direction removes, makes the pointer correspond to point to on the scale of calibrated scale.

As a further improvement, the accommodation chamber is connected to an external vacuum-pumping device for pumping air out of the sealed accommodation chamber.

The application also provides a method for coating the surface of the workpiece with the base coat, which comprises the following steps:

s1: vertically placing a plurality of base coating mechanisms on the placing table, wherein the bases are partially clamped at the opening of the accommodating chamber;

s2: the manipulator moves to be close to the placing table, the clamping part of the clamping mechanism clamps a part of the seat body above the accommodating chamber, and the priming coating mechanism is clamped and fixed in the accommodating part of the clamping mechanism, so that the pushing part is opposite to a piston of an injector of the priming coating mechanism;

s3: the manipulator moves to a workpiece to be coated with the base coat, the pushing part telescopically pushes a piston in the injector to extrude the base coat into the through hole of the seat body and flows to the felt sleeved on the lower part of the seat body through the through hole, so that the manipulator is controlled to move on the workpiece, and the base coat is coated on the workpiece by the felt;

s4: after coating is finished, the manipulator is moved to place the bottom coating mechanism back into the accommodating chamber of the placing table for sealing, the clamping part releases clamping and fastening of the base body, and the manipulator moves to an initial position.

By adopting the technical scheme, the utility model discloses can gain following technological effect:

the device for coating the bottom coat on the surface of the workpiece stores the bottom coat on the needle cylinder through the bottom coat coating mechanism, the bottom coat is extruded to the seat body provided with the through hole through the discharge head through the pushing of the piston, so that the bottom coat is conveyed to the felt sleeved on the lower part of the seat body, and the bottom coat is coated through the contact of the felt and the workpiece. The bottom coating mechanisms are vertically placed on the containing chamber, and part of the base body and the containing chamber are detachably clamped and fixed so as to seal the felt arranged at the lower part of the base body and be arranged in the containing chamber, so that the felt with the bottom coating is prevented from contacting with air for a long time, the bottom coating is conveyed onto the felt through the inner through hole and is reduced in contact with the outside air, and the problem of solidification and blockage during liquid supply is avoided. And the clamping mechanism is arranged on the manipulator, and driven by the manipulator, the clamping mechanism clamps and fixes part of the seat body on the containing chamber through the clamping part, so that the injector is fastened in the containing part, the pushing part is just opposite to the piston of the injector, and the piston is pushed to extrude the bottom coat in a telescopic way, thereby realizing the liquid supply of the felt. In the coating process, the manipulator drives the coating head of the base coating mechanism to move relatively, so that the felt arranged at the lower part of the seat body is contacted with the workpiece, the pushing part moves the abutting piston to extrude the base coating to the felt, the automatic base coating process is realized, the coating is uniform, and the coating efficiency is high.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic structural view of an apparatus for coating a surface of a workpiece with a primer according to embodiment 1 of the present invention;

FIG. 2 is a schematic view of the arrangement between the robot and the primer mechanism of FIG. 1;

FIG. 3 is a schematic view of the arrangement between the pick-up mechanism and the primer coating mechanism of FIG. 2;

FIG. 4 is a schematic view of the structure of FIG. 3 from a first perspective, with a cross-sectional view from the right;

FIG. 5 is a schematic view of the structure of FIG. 3 from a second perspective, with the right side partially disassembled;

FIG. 6 is a disassembled schematic view of FIG. 3 from a third perspective;

fig. 7 is a schematic structural view of a primer coating mechanism of an apparatus for primer coating a surface of a workpiece according to embodiment 1 of the present invention, in which a right side is a partially disassembled view;

FIG. 8 is a disassembled schematic view of FIG. 7 from another perspective;

fig. 9 is a schematic structural view of a placing table of the apparatus for coating a surface of a workpiece with a primer according to embodiment 1 of the present invention;

fig. 10 is a schematic view of the structure of fig. 9 from another perspective.

Icon: 1-a primer coating mechanism; 11-a coating head; 111-seat body; 1111-a cover body; 1112-a boss; 1113-rectangular block; 1114-clamping plate; 1115-a receiving head; 112-felt; 113-a via; 12-a syringe; 121-syringe; 122-a piston; 123-discharging head; 2-a robot; 21-a manipulator; 22-a gripping mechanism; 221-a clamping portion; 2211-pneumatic jaws; 222-a pushing part; 2221-push rod; 223-a locus of containment; 224-a mounting plate; 225-pointer; 226-dial; 3-placing the table; 31-a containment chamber; 311-an opening; 32-temporary storage area.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Example 1

With reference to fig. 1 to 8, the present embodiment provides an apparatus for coating a workpiece surface with a base coat, which includes a base coat coating mechanism 1, a robot 2, and a placing table 3.

The priming mechanism 1 comprises a coating head 11 and a syringe 12. The injector 12 includes a syringe 121 for storing the primer coat, and a piston 122 movably sleeved inside the syringe 121. The cylinder 121 has a discharge head 123, and the piston 122 moves relatively along the inside of the cylinder 121 to extrude or suck the base coat through the discharge head 123. The coating head 11 includes a base 111 and a felt 112, the base 111 is provided with a through hole 113 inserted and sleeved with the discharging head 123, the felt 112 is elastically sleeved on the lower portion of the base 111, and the lower surface of the felt 112 protrudes out of the lower surface of the base 111. The through hole 113 is connected to the felt 112 to convey the base coat extruded from the discharge head 123 into the felt 112. The bottom coat moves back and forth in the needle cylinder 121 through the piston 122, is correspondingly sucked into the needle cylinder 121 to fill the bottom coat in the needle cylinder 121, or is extruded along the discharge head 123 into the through hole 113 in insertion fit with the discharge head 123 and is conveyed to the felt 112 along the through hole 113. One end of the through hole 113 located in the seat body 111 is sleeved with the discharge head 123 of the needle cylinder 121, and the other end is connected to the felt 112 at the lower part of the seat body 111, so as to convey the base coat to the felt 112 for sufficient absorption.

The robot 2 includes a robot hand 21 and a gripping mechanism 22 disposed on the robot hand 21. Preferably, the robot 21 is a six-axis robot 21. The gripping mechanism 22 includes a gripping portion 221, a pushing portion 222 and a containing portion 223, the gripping portion 221 is used for gripping the seat body 111, so that the syringe 12 is gripped and fixed in the containing portion 223, the pushing portion 222 is disposed opposite to the piston 122 of the syringe 12 disposed in the containing portion 223, so as to push the piston 122 to extrude the bottom coat. By the gripping mechanism 22 disposed on the manipulator 21, the gripping mechanism 22 is driven by the manipulator 21 to grip and fix the fixed base 111 through the gripping part 221, so that the syringe 12 is fastened in the accommodating part 223, and the pushing part 222 faces the piston 122 of the syringe 12, so as to telescopically push the piston 122 to extrude the base coat, thereby supplying the liquid to the felt 112.

In the present embodiment, the gripping mechanism 22 has a mounting plate 224, the mounting plate 224 is assembled to the manipulator 21, the clamping portion 221 and the pushing portion 222 are respectively disposed at the lower end and the upper end of the mounting plate 224, and the accommodating portion 223 is formed between the mounting plate 224, the clamping portion 221 and the pushing portion 222, the seat 111 is clamped and fixed by the clamping portion 221, so that the piston 122 of the syringe 121 is located opposite to the pushing portion 222, so as to extrude the base coat disposed in the syringe 121 under the telescopic pushing of the pushing portion 222, an -shaped accommodating portion 223 is formed between the mounting plate 224, the clamping portion 221 disposed at the lower end of the mounting plate 224, and the pushing portion 222 disposed at the upper end of the mounting plate 224, so that when the clamping portion 221 clamps and fixes the seat 111, the syringe 12 is relatively fixed in the accommodating portion 223, and the upper portion of the seat 111 on the coating head 11 is clamped and fixed by the clamping portion 221, and the lower portion of the seat 111 is relatively far away from one end of the accommodating portion 223 and disposed outside, so that the.

Wherein the clamping portion 221 comprises at least one pneumatic clamping jaw 2211. The claw part of the pneumatic clamping jaw 2211 is relatively close to or far away from the base body 111 correspondingly. The pushing portion 222 has a telescopic pushing rod 2221, the pushing rod 2221 is pushed along the upper and lower ends of the mounting plate 224, the head of the syringe 121 is relatively fastened to the seat 111, the tail of the syringe 121 faces the pushing portion 222, so that the pushing rod 2221 is telescopically abutted to the piston 122 located in the syringe 121, and the piston 122 moves relative to the syringe 121 under the pushing of the pushing rod 2221, thereby extruding the primer contained in the syringe 121.

Referring to fig. 1, 9 and 10, a plurality of accommodating chambers 31 are disposed on the placing table 3, and a bottom coating mechanism 1 is vertically disposed at an opening 311 of each accommodating chamber 31. The base portion of the priming mechanism 1 is snapped into the opening 311 of the receiving chamber 31 and is detachably fastened to the receiving chamber 31 to seal the receiving chamber 31, and the felt 112 is placed in the receiving chamber 31 in a relatively sealed manner.

In particular, this is achieved in that the seat 111 is placed on the receiving chamber 31 so as to achieve relative sealing. The seat body 111 is composed of a cover 1111 having a boss 1112, a rectangular block 1113 vertically provided on the upper end surface of the cover 1111, and a clamp plate 1114 disposed on the boss 1112 at the lower end of the cover 1111 and elastically fitting the felt 112. The boss 1112 of the cover 1111 is adapted to the opening 311 of the accommodating chamber 31 to fit the accommodating chamber 31. Cover 1111 closes the butt through boss 1112 lid in the opening 311 top of holding room 31, realizes that detachable fastens each other inclosed, has guaranteed to scribble that priming mechanism 1 is vertical to be placed on holding room 31 for partly pedestal 111 can dismantle the chucking with holding room 31 and fix, places holding room 31 in with the felt 112 of placing the pedestal 111 lower part in is sealed, avoids the felt 112 that has the prime coat to contact with the air for a long time, and leads to the prime coat to dry easily, influences the coating effect. The felt 112 is removably nested within the clamp 1114 with portions of the felt 112 exposed outside of the clamp 1114 for contacting a workpiece to be primed.

Preferably, the clamping plate 1114 is provided with a convex corner, and the convex corner extends outwards to be arranged at the position close to the outer side of the lower end of the clamping plate 1114 and is connected with the side edge of the clamping plate 1114 through a round angle. The convex angle is arranged on one side of the bottom end of the clamping plate 1114, so that when a workpiece with a right-angle edge is coated, the workpiece can be uniformly coated on the bottom coat, and white leakage is avoided. The holding portion 221 holds and fixes the rectangular block 1113 so that the syringe 12 disposed on the holder body 111 is vertically placed in the accommodating portion 223. The upper end surface of the rectangular block 1113 is provided with a receiving head 1115, and the discharging head 123 of the syringe 121 is vertically inserted and fixed on the receiving head 1115 and communicated with the through hole 113 inside, thereby conveying the bottom coat extruded by the syringe 121 to the felt 112. When the primer coating mechanism 1 is placed on the placing table 3, the rectangular block 1113 is located at the upper end of the cover 1111 and exposed to the outside, so that the robot arm 21 drives the pneumatic clamping jaw 2211 of the clamping portion 221 to open and close relatively to clamp the rectangular block 1113, thereby clamping the primer coating mechanism 1 away from the placing table 3.

Preferably, the lower end surface of the cover 1111 and the outer side surface of the boss 1112 are nested with O-rings (not shown). The O-ring is a sealing ring, so that when the cover 1111 is covered on the opening 311 of the accommodating chamber 31, the wall of the opening 311, which is matched with the lower end surface of the cover 1111 and the boss 1112 arranged on the end surface of the cover 1111, is in close contact with the cover 1111 through the O-ring, so that the cover is closed more tightly.

Referring to fig. 5, the syringe 121 has an outer black coating for shielding the primer coating inside the syringe 121. The black coating is a light-proof coating, which prevents an external light source from directly irradiating the bottom coating in the needle cylinder 121, so that the bottom coating has increased service life. Correspondingly, the black coating covers the syringe 121, so that the naked eye cannot judge the residual amount of the base coating inside the syringe 121, and the extrusion discharge of the syringe 121 is inconvenient. To solve this problem, the gripping mechanism 22 is provided with a marking member (not shown) for observing the remaining amount of the primer inside the cylinder 121. Specifically, one end of the push rod 2221, which is far away from the piston 122, is provided with a pointer 225, the mounting plate 224 is correspondingly provided with an elongated dial 226, and the push rod 2221 moves along the direction of the piston 122, so that the pointer 225 correspondingly points to the scale 226, and the remaining amount of the base coat in the syringe 121 is correspondingly read through the change of the pointer 225 on the scale 226.

Further, the accommodating chamber 31 is connected to an external vacuum-pumping device (not shown) for pumping air out of the sealed accommodating chamber 31. In this embodiment, the accommodating chamber 31 is a closed chamber having only the opening 311, the opening 311 is tightly fitted through the cover 1111, so that the accommodating chamber 31 is in a relatively sealed state, and the excess air in the chamber is extracted by communicating an external vacuum-pumping device to the accommodating chamber 31, and the vacuum-pumping device is closed immediately after extracting the air, thereby ensuring that the felt 112 placed in the chamber is in a vacuum state.

Referring to fig. 9 and 10, a temporary storage area 32 is disposed on one side of the placing table 3, and the temporary storage area 32 is protruded with the accommodating chamber 31 for being distinguished from other accommodating chambers 31. The accommodating chamber 31 arranged in the temporary storage area 32 is used for accommodating the bottom coating mechanisms 1 which are not used up in the coating process, so that the used bottom coating mechanisms 1 are prevented from being mixed with the unused bottom coating mechanisms 1, and the management and control of the bottom coating mechanisms 1 are facilitated.

Example 2

The application also provides a method for coating the surface of the workpiece with the base coat, which comprises the following steps:

s1: a plurality of coat painting mechanisms 1 are vertically placed on the placing table 3, and the bases are partially caught at the opening 311 of the accommodating chamber 31.

Specifically, the cover 1111 of the seat 111 is disposed above the opening 311 of the accommodating chamber 31 and is abutted and matched with the cavity wall of the opening 311 through the boss 1112, so that a part of the seat 111 is accommodated in the accommodating chamber 31, and the felt 112 located at the lower portion of the seat 111 is disposed in the accommodating chamber 31 in a relatively sealed manner, thereby preventing the felt 112 from contacting with air for a long time. The rectangular block 1113 on the upper portion of the base 111 is exposed to the outside, so that the manipulator 21 drives the clamping portion 221 to clamp and fix the rectangular block 1113, and clamp and fix the bottom coating mechanism 1 on the clamping mechanism 22.

S2: the robot 21 moves close to the placing table 3, and the gripping part 221 of the gripper 22 grips a part of the seat body 111 located above the accommodating chamber 31, and grips and fixes the primer coating mechanism 1 in the accommodating part 223 of the gripper 22, so that the pushing part 222 faces the piston 122 of the syringe 12 of the primer coating mechanism 1.

Specifically, the seat body 111 is clamped and fixed by the clamping portion 221, so that the piston 122 of the syringe 121 faces the pushing portion 222, and the bottom coat disposed in the syringe 121 is extruded under the telescopic pushing of the pushing portion 222. The injector 12 is relatively fixed in the accommodating portion 223, the upper portion of the seat 111 on the coating head 11 is clamped and fixed by the clamping portion 221, and the lower portion of the seat 111 is relatively far away from one end of the accommodating portion 223 and is disposed outside, so that the felt 112 sleeved on the lower portion of the seat 111 is relatively protruded, and the felt 112 is driven by the manipulator 21 to contact with the workpiece.

S3: the manipulator 21 moves to the workpiece to be coated with the base coat, the pushing part 222 telescopically pushes the piston 122 in the injector 12 to extrude the base coat into the through hole 113 of the seat body 111 and flow to the felt 112 sleeved on the lower part of the seat body 111 through the through hole 113, so that the movement of the manipulator 21 on the workpiece is controlled, and the base coat is coated on the workpiece by the felt 112.

Specifically, the pushing portion 222 has a telescopic pushing rod 2221, the pushing rod 2221 pushes the piston 122 in the up-down direction, the head of the syringe 121 is relatively fastened to the seat 111, the tail of the syringe 121 faces the pushing portion 222, so that the pushing rod 2221 is telescopically abutted to the piston 122 located in the syringe 121, and the piston 122 moves relative to the syringe 121 under the pushing of the pushing rod 2221, so as to extrude the primer contained in the syringe 121. The felt 112 is brought into contact with the workpiece by the robot 21, and the base coat is applied to the workpiece.

S4: after the coating is completed, the moving robot 21 returns the primer coating mechanism 1 to the inside of the housing chamber 31 of the placing table 3 to be sealed, the clamping portion 221 releases the clamping and fastening of the base body 111, and the robot 21 moves to the initial position.

Specifically, the manipulator 21 drives the bottom coating mechanism 1 to be disposed on the opening 311 of the accommodating chamber 31 along the vertical direction, and presses the seat 111 relatively, so that the seat 111 is tightly fitted to the opening 311. Then, the clamping portion 221 is opened relatively to be away from the base 111, and the robot 21 drives it back to the initial position to wait for the next coating process.

Above only the utility model discloses an it is preferred embodiment, the utility model discloses a scope of protection not only limits in above-mentioned embodiment, and the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection.

Claims (10)

1. An apparatus for coating a surface of a workpiece with a primer, comprising:

the bottom coating mechanism comprises a coating head and an injector, the injector comprises a needle cylinder for storing a bottom coating and a piston movably sleeved in the needle cylinder, the needle cylinder is provided with a discharge head, the piston relatively moves along the interior of the needle cylinder and extrudes or sucks the bottom coating through the discharge head, the coating head comprises a base body and a felt, the base body is provided with a through hole which is inserted and sleeved with the discharge head, the felt is elastically sleeved at the lower part of the base body, the lower surface of the felt protrudes out of the lower surface of the base body, and the through hole is connected to the felt so as to convey the bottom coating extruded by the discharge head into the felt;

the clamping mechanism comprises a clamping part, a pushing part and an accommodating part, the clamping part is used for clamping the base body, so that the syringe clamp is fixed in the accommodating part, and the pushing part is arranged opposite to a piston of the syringe in the accommodating part so as to push the piston to extrude out the bottom coat;

the bottom coating mechanism is arranged on the containing chambers, the base part of the bottom coating mechanism is clamped at the opening of the containing chambers and detachably fastened with the containing chambers to seal the containing chambers, and the felt is arranged in the containing chambers in a relatively sealed manner.

2. The apparatus for surface coating of a workpiece with a base coat according to claim 1, wherein 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 arranged on the boss at the lower end of the cover body and used for elastically sleeving the felt; the boss of the cover body is matched with the opening of the containing chamber so as to seal the containing chamber in a sleeved mode; the felt is detachably sleeved in the clamping plate, and part of the felt is exposed out of the outer side of the clamping plate and is used for contacting a workpiece to be coated with primer.

3. The apparatus according to claim 2, wherein the holding portion clamps and fixes the rectangular block so that the syringe disposed on the housing is placed in the accommodating portion; the upper end surface of the rectangular block is provided with a bearing head, and a discharge head of the needle cylinder is vertically inserted and fixed onto the bearing head and communicated to the through hole inside, so that the bottom coat extruded by the needle cylinder is conveyed to the felt.

4. The apparatus for coating a surface of a workpiece with a base coat according to claim 2, wherein the lower end surface of the cover body and the outer side surface of the boss are nested with O-rings.

5. The apparatus according to claim 1, wherein the gripping mechanism has a mounting plate, the mounting plate is assembled to the manipulator, the gripping portion and the pushing portion are respectively disposed at the lower end and the upper end of the mounting plate, the gripping portion and the pushing portion form the accommodating portion therebetween, and the seat body is fixed by being clamped by the gripping portion so that the piston of the syringe is positioned opposite to the pushing portion, thereby extruding the base coat disposed in the syringe under the telescopic pushing of the pushing portion.

6. An apparatus according to claim 5, wherein the clamping portion comprises at least one pneumatic clamping jaw, and the jaw portion of the pneumatic clamping jaw is relatively close to or far from the clamping portion and correspondingly clamps and fixes or places the seat body.

7. The apparatus according to claim 5, wherein the pushing member has a telescopic rod, the rod is pushed along the upper and lower ends of the mounting plate, the head of the syringe is relatively fastened to the housing, and the tail of the syringe faces the pushing member, so that the rod is telescopically abutted to the piston in the syringe.

8. The apparatus for coating a surface of a workpiece with a base coat according to claim 7, wherein the cylinder has an outer black coat for masking the base coat in the cylinder; the push rod is kept away from the one end of piston is equipped with a pointer, the correspondence is equipped with an elongated calibrated scale on the mounting panel, the push rod is followed the piston direction removes, makes the pointer correspond to point to on the scale of calibrated scale.

9. An apparatus for coating a surface of a workpiece with a primer according to claim 1 wherein said containment chamber is connected to an external vacuum extraction device for evacuating air from the sealed containment chamber.

10. An apparatus for coating a surface of a workpiece with a primer according to claim 1, wherein the placing table is provided with a temporary storage area on one side, and the temporary storage area is protrusively provided with a receiving chamber for distinguishing from other receiving chambers.

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