CN213996388U

CN213996388U - Keycap paint spraying device with paint blocking strip

Info

Publication number: CN213996388U
Application number: CN202022187482.XU
Authority: CN
Inventors: 戴兴泉; 周长水; 李炳缘
Original assignee: Suzhou New Continent Precision Technology Co Ltd
Current assignee: Suzhou New Continent Precision Technology Co Ltd
Priority date: 2020-09-29
Filing date: 2020-09-29
Publication date: 2021-08-20
Anticipated expiration: 2030-09-29

Abstract

The utility model discloses a key cap paint spraying apparatus with keep off lacquer strip, it includes the connecting plate, the connecting plate includes the sub-connecting plate of a plurality of mutual overlap joints, every be provided with the installation base for fixed key cap on the sub-connecting plate, the connecting plate is provided with the fender lacquer strip in the one side of installation base, it is in to keep off the lacquer strip around being equipped with the round on the connecting plate, it forms the district that sprays paint to lie in the inboard part of this round fender lacquer strip on the connecting plate, the part that lies in this round fender lacquer strip outside on the connecting plate forms the fixed area, the installation base sets up in the district that sprays paint, the height that keeps off the lacquer strip is less than the height of installation base. Last fender lacquer strip of key cap paint spraying apparatus divide into paint spraying area and fixed area with the connecting plate, has solved among the prior art lacquer and has all been difficult to the problem of clearance everywhere on the platform connecting plate, has further improved production efficiency and workshop health condition, has reduced the cost of clean input.

Description

Keycap paint spraying device with paint blocking strip

Technical Field

The utility model relates to a key cap technical field that sprays paint on the keyboard especially relates to a key cap paint spraying apparatus with keep off lacquer strip.

Background

When the key cap sprays paint, need install the key cap and spray paint on the anchor clamps of simulation keyboard. The condition that lacquer scatters about distributing on the device can appear in current key cap paint spraying apparatus at the in-service use in-process, and this is because when painting equipment sprays paint to the key cap, does not have the shielding object on the device to as for shower nozzle spun lacquer all is everywhere, and lacquer adhesion is at board and device substrate surface etc. and clean work is difficult to do, draws low production efficiency.

Moreover, when spraying paint to the key cap, the pressure of spraying paint is great, and it is not firm to fix between the anchor clamps of key cap and installation key cap for in-process key cap that sprays paint drops or the slope, influences the efficiency of spraying paint, increases the defective rate of production.

Therefore, a new technical solution is needed to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problem that exists among the prior art, the utility model provides a key cap paint spraying apparatus with keep off lacquer strip, the technical scheme of adoption is:

the utility model provides a key cap paint spraying apparatus with keep off lacquer strip, its includes the connecting plate, the connecting plate includes the mutual lapped sub-connecting plate of a plurality of, every be provided with the installation boss for fixed key cap on the sub-connecting plate, the connecting plate is provided with keep off lacquer strip in the one side of installation boss, it is in to keep off lacquer strip around being equipped with the round on the connecting plate, it forms the district that sprays paint to lie in this round and keep off the inboard part of lacquer strip on the connecting plate, it forms the fixed area to lie in the part that this round kept off the lacquer strip outside on the connecting plate.

Further in the above technical scheme, the mounting boss is disposed in the painting area, and the height of the paint blocking strip is lower than that of the mounting boss.

Further, the paint blocking strip extends from the surface of the connecting plate to the direction away from the connecting plate vertically.

Furthermore, the paint blocking strip comprises four sections, the paint blocking strip is arranged on the connecting plate in a circle in a winding mode, and the paint blocking strip surrounds the surface of the connecting plate to form the paint spraying area.

Further, the four paint blocking strips are not connected, or the four paint blocking strips are sequentially connected end to end, or two or three adjacent paint blocking strips are connected.

Furthermore, a plurality of stacking columns are arranged in the fixing area of the connecting plate, the stacking columns are close to the edge of the connecting plate, and the stacking columns are uniformly distributed around the connecting plate.

Further, the total height of the mounting boss and the keycap mounted on the mounting boss is less than the height of the stacking column.

Further, the number of the stacking columns is more than or equal to three.

Furthermore, a plurality of grooves are further arranged in the fixing area of the connecting plate, and the grooves are rectangular grooves or semicircular grooves from the edge of the connecting plate to the inner part of the connecting plate.

Further, still be provided with the dismantlement in the fixed area of connecting plate be used for during the connecting plate with disassemble the disassembly screening glass that the platform supporting part is contradicted, disassemble the screening glass setting and be in four apex angle departments of connecting plate, disassemble the surface of screening glass with the basic parallel and level in surface of connecting plate, the edge of disassembling the screening glass is provided with the round spacing groove, the degree of depth in spacing groove is less than the thickness of connecting plate.

Furthermore, the connecting plate comprises a first sub-connecting plate, a second sub-connecting plate, a third sub-connecting plate, a fourth sub-connecting plate and a fifth sub-connecting plate, wherein the first sub-connecting plate and the second sub-connecting plate are in left-right lap joint, the fifth sub-connecting plate and the fourth sub-connecting plate are in left-right lap joint, the first sub-connecting plate and the fifth sub-connecting plate are in up-down lap joint, the second sub-connecting plate and the fourth sub-connecting plate are in up-down lap joint, and the second sub-connecting plate and the fourth sub-connecting plate are in left-right lap joint with the third sub-connecting plate respectively.

Furthermore, the two sub-connecting plates are mutually overlapped, the edge of one sub-connecting plate is provided with a convex edge, the thickness of the convex edge is smaller than that of the side wall of the sub-connecting plate, the edge of the other sub-connecting plate is provided with a groove matched with the convex edge, and the convex edge is embedded into the groove, so that the surfaces of the two sub-connecting plates are basically flush.

Furthermore, the edge of the connecting plate is provided with a circle of flanges, the flanges extend from the connecting plate to the direction back to the mounting boss, a substrate is accommodated in the circle of flanges, and the heights of the flanges are greater than the thickness of the substrate.

Further, be provided with a plurality of on the connecting plate installation boss, a plurality of installation boss is in multirow is arranged on the connecting plate, and each line includes a plurality of installation boss, wherein, between two adjacent installation bosses in each line to and all be provided with between the installation boss of two adjacent lines and pass through the lacquer hole.

Further, be provided with on the base plate with go up the lower hole of penetrating paint that the hole of penetrating paint counterpointed setting, the shape of the hole of penetrating paint down with the shape of going up the hole of penetrating paint is unanimous, the aperture size of the hole of penetrating paint down is greater than the aperture size of the hole of penetrating paint on.

Further, go up the hole of penetrating paint have certainly the connecting plate orientation the pore wall that the base plate direction extends, the pore wall of going up the hole of penetrating paint hold in it is downthehole that the lower hole of penetrating paint on the base plate is passed through to go up the hole of penetrating paint with it passes through to pass through down the pore wall intercommunication and form and lead the lacquer passageway.

Further, be provided with the key cap on the installation base and dodge the groove, the key cap dodges the groove and sets up between two parties the upper surface of installation base, the key cap dodges the groove certainly upper surface undercut forms the trough-shaped, have on the key cap with the key cap dodges groove complex arch.

Further, the tank bottom that the groove was dodged to the key cap on the installation base is provided with the spliced pole, the one end of spliced pole with the tank bottom that the groove was dodged to the key cap links to each other, the other end court with the notch opposite direction's that the groove was dodged to the key cap direction extends.

Furthermore, a plurality of guide strips are arranged on the side wall of the connecting column, the guide strips are distributed in parallel along the direction of the central axis of the connecting column, the connecting column is aligned and inserted with the small positioning holes in the substrate, and the connecting column is in interference fit with the small positioning holes in the substrate.

Furthermore, the length of the connecting column is larger than the thickness of the substrate, one end of the connecting column, which is connected with the bottom of the keycap avoiding groove, is accommodated in the small positioning hole, the other end of the connecting column extends out of the small positioning hole, the extending end part is fixed on the surface of the substrate in a hot melting mode, the extending end part is formed into a flat cake-shaped end part in a hot melting mode, and the diameter of the flat cake-shaped end part is larger than the inner diameter of the small positioning hole.

Further, still be provided with the reference column on the connecting plate, the reference column is including seting up through-hole on the connecting plate, the through-hole has certainly the connecting plate is to the pore wall that first direction and second direction extend simultaneously, first direction with the second direction is opposite, just first direction with the second direction all with the face of connecting plate is perpendicular.

Furthermore, one end of the through hole wall is provided with a cover plate, the cover plate is positioned on one side of the connecting plate provided with the mounting boss, a central hole is formed in the cover plate and communicated with the through hole, and the through hole wall and the cover plate form the positioning column on the connecting plate.

Further, the mounting height of the cover plate is larger than that of the mounting boss.

Furthermore, one end of the through hole wall, which is not provided with the cover plate, penetrates through the main positioning hole on the substrate, and the height of the end of the through hole wall, which is not provided with the cover plate, is smaller than the thickness of the substrate or is consistent with the thickness of the substrate.

Furthermore, the connecting plate is provided with at least two positioning columns, and the two positioning columns are respectively arranged at two ends of the connecting plate.

Further, still be provided with a plurality of preformed holes on the installation boss, the pore wall of going up the preformed hole certainly installation boss surface downwardly extending is in order to run through the lower preformed hole on the base plate, the pore wall of going up the preformed hole hold in the preformed hole down, the aperture of going up the preformed hole is less than the aperture of preformed hole down.

Further, still be provided with the key cap mounting groove on the installation base, the key cap mounting groove includes side recess and surperficial recess, the key cap with the installation base passes through side recess 211 and surperficial recess block are connected.

Further, the side recess is seted up the surface of installation base, just the side recess is followed the lateral wall of installation base is seted up, the side recess with the height of a lateral wall of the coincidence of the lateral wall of installation base is less than the height of installation base, and is provided with the shrinkage pool on this lateral wall, the shrinkage pool cooperatees with the reinforcement body of the pothook on the key cap.

Furthermore, the surface groove is formed in the surface of the mounting boss, a clamping shaft is arranged on the groove wall of the surface groove, and the mounting height of the clamping shaft is lower than the upper surface of the mounting boss.

Furthermore, be provided with two on the installation boss side recess, two surperficial recess and three preformed hole on, the three preformed hole triangle is arranged.

Further, the side grooves and the surface grooves are arranged on the periphery of the three upper preformed holes.

Compared with the prior art, the utility model discloses have one or more among following beneficial effect:

1. have on the key cap paint spraying apparatus and keep off the lacquer strip, it can divide into paint spraying area and fixed area with the connecting plate, has separated to keep off and just can prevent to appear on the connecting plate all around the phenomenon of vaporific lacquer and take place, has solved among the prior art lacquer and has scattered the distribution on the connecting plate everywhere, is difficult to the problem of clearance, has further improved production efficiency and workshop health condition, has reduced the cost of clean input.

2. Key cap paint spraying apparatus passes through key cap mounting groove and key cap fixed connection on the installation base, and it is whole fixed firm, difficult production slope in the process of spraying paint, the problem that drops ensure that the process of spraying paint goes on smoothly, reduce the defective rate that sprays paint, improve production efficiency.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic perspective view of a keycap paint spraying jig according to an embodiment of the present invention, wherein a substrate is nested on the back of the keycap paint spraying jig (the substrate is on the back of the jig, and the substrate is not shown due to the angle problem);

FIG. 2 is a rear view of FIG. 1 at an angle showing the base plate nested behind the key cap painting jig;

FIG. 3 is an exploded view of the key cap paint spraying jig obtained after the key cap paint spraying jig is detached from the substrate;

FIG. 4 is a schematic plan view of a key cap painting jig according to an embodiment of the present invention;

FIG. 5 is an exploded view of the keycap painting jig of FIG. 1, wherein the web of the keycap painting jig is broken down into five sub-webs;

FIG. 6 is a schematic bottom view of the key cap painting jig of FIG. 4;

FIG. 7 is an enlarged view of a portion of the mounting boss of FIG. 1 at section A;

fig. 8 is a partially enlarged view of a portion B in fig. 7;

fig. 9 is a schematic perspective view of an embodiment of the mounting boss of the present invention;

fig. 10 is a partially enlarged view of a portion C in fig. 3;

fig. 11 is a schematic perspective view of the connecting column of the present invention disposed on the connecting plate;

fig. 12 is a schematic perspective view of the connecting column of the present invention;

FIG. 13 is a schematic perspective view of a key cap according to an embodiment of the present invention;

FIG. 14 is a schematic perspective view of the key cap mounted on the mounting boss.

Wherein, 100-connecting plate, 101-first sub-connecting plate, 102-second sub-connecting plate, 103-third sub-connecting plate, 104-fourth sub-connecting plate, 105-fifth sub-connecting plate, 110-convex edge; 120-grooves; 130-paint stop strip; 140-stacking columns; 150-a rib; 160-paint through holes; 170-disassembling the protective sheet; 171-a limiting groove; 180-positioning columns; 181-cover plate;

200-installation boss, 210-key cap installation groove, 211-side groove; 212-surface grooves; 213-a clamping shaft; 220-key cap avoidance groove; 221-a first avoidance hole; 222-a second avoidance slot; 223-connecting column; 224-a guide bar; 230-upper preformed hole;

300-a keycap; 310-a bump; 320-a snap-fit structure; 321-hook; 3211-a support column; 3212-top plate; 3213-a reinforcement; 322-a card seat; 3221-seat hole;

400-a substrate; 410-lower lacquer through holes; 420-small positioning holes; 430-main positioning hole; 440-lower preformed hole.

Detailed Description

The technical solutions of the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are only 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.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and 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. 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.

The gist of the present invention will be further explained with reference to the accompanying drawings and examples.

Example (b):

referring to fig. 1-12, to the problem that exists among the prior art, the utility model provides a key cap tool of spraying paint, it includes connecting plate 100, connecting plate 100 includes a plurality of mutual overlap joint sub-connecting plates, every be provided with the installation base 200 that is used for fixed key cap on the sub-connecting plate, be provided with key cap mounting groove 210 on the installation base 200, installation base 200 passes through key cap mounting groove 210 is connected with the key cap, key cap 300 with installation base 200 block is connected.

In an embodiment, referring to fig. 5, the connection board 100 of the present invention may be divided into a first sub-connection board 101, a second sub-connection board 102, a third sub-connection board 103, a fourth sub-connection board 104 and a fifth sub-connection board 105, wherein the first sub-connection board 101 and the second sub-connection board 102 are overlapped left and right, the fifth sub-connection board 105 and the fourth sub-connection board 104 are overlapped left and right, the first sub-connection board 101 and the fifth sub-connection board 105 are overlapped up and down, the second sub-connection board 102 and the fourth sub-connection board 104 are overlapped up and down, and the second sub-connection board 102 and the fourth sub-connection board 104 are overlapped left and right with the third sub-connection board 103, respectively. The base plate is embedded in the connecting plate formed by splicing the five sub-connecting plates, the plurality of sub-connecting plates formed after the connecting plate is split are independently processed, the overall precision can be improved, and the method has a precision advantage compared with the original large plate overall processing.

In one embodiment, referring to fig. 9, two sub-connection boards of the present invention are overlapped with each other, wherein the edge of one sub-connection board has a convex edge 110, the thickness of the convex edge 110 is smaller than the thickness of the side wall of the sub-connection board, the edge of the other sub-connection board has a groove 120 matching with the convex edge 110, and the convex edge 110 is embedded into the groove 120, so that the surfaces of the two sub-connection boards are substantially flush. The mode of mutual lap joint can effectively ensure the sealing performance of the surface of the connecting plate, and the vaporous paint can not permeate into the substrate at the back of the connecting plate through the connecting gap of the two sub-connecting plates, thereby ensuring the cleanliness of the substrate and prolonging the service life of the substrate.

In an embodiment, refer to fig. 1 and 4, the connecting plate 100 is provided with be provided with on the one side of installation boss 200 and keep off lacquer strip 130, keep off lacquer strip 130 around being equipped with the round on the connecting plate 100, the part that lies in this round on the connecting plate 100 and keeps off the inboard part of lacquer strip 130 and form the painting area, the part that lies in this round on the connecting plate 100 and keeps off the outside of lacquer strip 130 forms the fixed area, installation boss 200 sets up in the painting area. Keep off lacquer strip 130 and can divide into paint spraying area and fixed area with connecting plate 100 around the round on connecting plate 100, when the shower nozzle of paint spraying equipment sprays paint for key cap 300 on the installation base plate 200, vaporific lacquer in the shower nozzle can not reach the fixed area, it only sprays paint in the paint spraying area, and the fixed area can be fixed with the board, guarantee that the key cap paint spraying tool can not take place to remove at the in-process that sprays paint, and nested base plate also can play the effect of support to the key cap paint spraying tool in the key cap paint spraying tool, this kind of supporting role can make the key cap paint spraying tool withstand the paint pressure of the in-process that sprays paint, guarantee the precision that the key cap sprays paint.

In one embodiment, referring to fig. 6, the height of the paint stop strip 130 is lower than the height of the mounting boss 200. The function of the paint blocking strip comprises that the atomized paint sprayed by the paint spraying equipment is blocked from reaching the fixed area of the connecting plate, so that the paint blocking strip does not need too high height, and the production requirement is met as long as the paint blocking strip can block the atomized paint from spreading.

In one embodiment, with continued reference to fig. 1, the paint stop strip 130 extends vertically away from the surface of the connection plate 100. The paint blocking strip 130 comprises four sections, a circle of the paint blocking strip 130 is wound on the connecting plate 100, and the paint spraying area is formed by the paint blocking strip 130 on the surface of the connecting plate 100 in an enclosing mode. The four paint blocking strips 130 are not connected, or the four paint blocking strips 130 are all connected end to end in sequence, or two or three adjacent paint blocking strips 130 are connected. A plurality of stacking columns 140 are arranged in the fixing area of the connecting plate 100, the stacking columns 140 are close to the edge of the connecting plate 100, and the stacking columns 140 are uniformly distributed around the connecting plate 100. The total height of the mounting boss 200 and the key cap 300 mounted on the mounting boss 200 is less than the height of the stacking column 140. The number of the stacking columns 140 is equal to or greater than three. Still be provided with a plurality of recesses in the fixed area of connecting plate 100, the recess is for certainly connecting plate 100 edge to the inside sunken rectangular channel or the semicircular groove of connecting plate 100. Still be provided with the dismantlement in the fixed area of connecting plate 100 be used for during connecting plate 100 with disassemble the dismantling protection sheet 170 of a supporting part conflict, dismantle protection sheet 170 sets up four apex angle departments of connecting plate 100, disassemble the surface of protection sheet 170 with the surface parallel and level of connecting plate 100 basically, the edge of dismantling protection sheet 170 is provided with round spacing groove 171, the degree of depth of spacing groove 171 is less than the thickness of connecting plate 100.

In one embodiment, referring to fig. 1, a plurality of stacking columns 140 are disposed in the fixing area of the connection plate 100, the stacking columns 140 are near the edge of the connection plate 100, and the plurality of stacking columns 140 are uniformly distributed around the connection plate 100; the total height of the mounting boss 200 and the keycap mounted on the mounting boss 200 is less than the height of the stacking column 140. The stacking column 140 extends from the plate surface of the connecting plate 100 in a direction vertically away from the connecting plate 100. The stacking column 140 is in a long strip shape, a circle of the stacking column 140 is wound around the plate surface of the connecting plate 100, and the mounting boss 200 is arranged at the inner side of the circle of the stacking column 140. The stacking columns 140 are disposed on the surface of the connecting plate 100 at intervals, and a circle of the stacking columns 140 is wound on the surface of the connecting plate 100. Connecting plate 100 is the rectangular shaped plate, is provided with four on two long edges of this rectangular shaped plate respectively pile post 140, this four pile post 140 along the long edge direction evenly distributed of this rectangular shaped plate, be provided with two on two short edges of this rectangular shaped plate respectively pile post 140, this two pile post 140 along the short edge direction evenly distributed of this rectangular shaped plate. The stacking column is multiple the keycap paint spraying jigs can be supported and separated when being stacked and placed, the keycaps are guaranteed to be mounted on the mounting bosses and cannot rub the bottom of another keycap paint spraying jig, or the bottom of the substrate nested in another keycap paint spraying jig is not rubbed, and at the moment, the top of the stacking column is supported to the bottom of the substrate, and a safety space is lifted up for the mounting bosses provided with the keycaps.

In an embodiment, the number more than or equal to three of pile 140, the pile is in play a support divided effect on the connecting plate, and it is enough firm consequently to support, therefore, two or a pile up the post and have the hidden danger that support stability is not enough, and two big pile up the post and can account for the space again, consequently, the utility model discloses a scheme of a plurality of little pile up the post can disperse again and come not occupation space when guaranteeing support stability. Set up the pile post on the fixed area, pile up the edge that the post is close to the tool, play the supporting role when it is used for the coincide tool, prevent the upper and lower tool contact of coincide, during the coincide, between two adjacent tools, go up tool aluminum plate and lower tool and support the height that the clearance between the boss is greater than the key cap, key cap contact wear on the tool of preventing upper and lower coincide.

In an embodiment, referring to fig. 1, the edge of the connecting plate 100 of the present invention is provided with a ring of ribs 150, the ribs 150 extend from the connecting plate 100 to a direction away from the mounting boss 200, the ring of ribs 150 accommodates a substrate 400 therein, and the height of the ribs 150 is greater than the thickness of the substrate 400. The flange will the key cap tool that sprays paint's the back has enclosed into a holding tank that can hold the base plate, can play limiting displacement when a plurality of tools are piled up and are placed, when fixing the key cap tool that sprays paint on the board, the base plate supports the key cap tool that sprays paint, and the key cap tool that can guarantee plastics does not take place to warp, and is same the flange also can protect the base plate not receive wearing and tearing, the extension the life of base plate.

In one embodiment, referring to fig. 1-5 and 7, the connecting plate 100 of the present invention is provided with a plurality of mounting bosses 200, the mounting bosses 200 are arranged on the connecting plate 100 in multiple rows, each row includes a plurality of mounting bosses 200, wherein upper paint through holes 160 are provided between two adjacent mounting bosses 200 in each row and between two adjacent rows of mounting bosses 200; be provided with on the base plate 400 with go up the lower hole 410 that passes through lacquer that passes through the lacquer hole 160 counterpoint set up, down pass through the lacquer hole 410 the shape with it is unanimous to go up the shape of passing through lacquer hole 160, the aperture size of passing through lacquer hole 410 down is greater than go up the aperture size of passing through lacquer hole 160, it has certainly to go up pass through lacquer hole 160 the connecting plate 100 orientation the pore wall that the base plate 400 direction extends, go up pass through lacquer hole 160 the pore wall hold in the lower hole 410 that passes through lacquer on the base plate 400, go up pass through lacquer hole 160 with pass through down pass through lacquer hole 410 the pore wall intercommunication forms and leads the lacquer passageway. Go up the hole of penetrating paint can go out unnecessary vaporific lacquer water conservancy diversion when spraying paint, when spraying paint to the key cap from the positive key cap top of tool, the base plate below sets up the negative pressure, last hole of penetrating paint can carry out the pressure release to spun lacquer, vaporific lacquer is siphoned away by the negative pressure through last hole of penetrating paint on the connecting plate, reduces vaporific lacquer bounce-back, improves the homogeneity that the key cap sprayed paint.

In one embodiment, the upper paint-through holes 160 include one or more of round holes, oblong holes, and rectangular holes. The upper paint through hole 160 is a long circular hole, a reinforcing connecting plate is arranged on the hole wall of the long circular hole, the center positions of two long edges of the long circular hole are connected through the reinforcing connecting plate, and the reinforcing connecting plate is arranged at one end, deviating from the mounting boss, of the upper paint through hole 160. The end of the upper paint hole 160 facing away from the mounting boss is substantially flush with the side of the substrate 400 facing away from the mounting boss. A gap is formed between the hole wall of the lower paint penetration hole 410 of the substrate 400 and the hole wall of the upper paint penetration hole 160, and the width range of the gap is 1mm-2 mm.

In an embodiment, referring to fig. 1 to 5, a disassembling protection sheet 170 for abutting against a disassembling table support part when the connecting plate 100 is disassembled is integrally formed on the connecting plate 100, the disassembling protection sheet 170 is disposed at four vertex angles of the connecting plate 100, a surface of the disassembling protection sheet 170 is substantially flush with a surface of the connecting plate 100, an edge of the disassembling protection sheet 170 is provided with a circle of limiting groove 171, the limiting groove 171 is recessed downwards from the surface of the connecting plate 100 to form a groove shape, and a depth of the limiting groove 171 is smaller than a thickness of the connecting plate 100. The width of the limiting groove 171 is 1 mm; the outer diameter of the limiting groove 171 is 1 cm. The connecting plate 100 is a strip-shaped plate, four corners of the strip-shaped plate are respectively provided with a piece of the protective dismantling plate 170, and the distance range from the edge of the limiting groove 171 of the protective dismantling plate 170 to the edge of the connecting plate 100 is 0.5cm-1 cm. When the key cap paint spraying jig is disassembled, the key cap paint spraying jig is placed on four ejector pins of a machine table in a mode that a base plate faces upwards, the four ejector pins are respectively supported corresponding to the disassembling protection plates on four corners of the key cap paint spraying jig, then impact force is applied to the upper portion of the base plate of the key cap paint spraying jig, the ejector pins penetrate through the disassembling protection plates, and the key cap paint spraying jig is separated from the base plate. In the disassembling process of the jig, the disassembling protection sheet plays a supporting role, so that when a certain sub-connecting plate is disassembled, the position of one of 4 corners of the base plate is in a suspended state, the base plate is prevented from deforming, and the base plate is easy to deform due to downward disassembling pressure; when the jig is disassembled, the ejector pin props against the disassembling protection sheet and cuts off the disassembling protection sheet, and the jig is disassembled while the substrate is protected (the substrate is prevented from deforming); and the disassembly protection plate is arranged on the connecting plate and is integrated with the jig, so that no leak exists, paint leakage can be prevented, and the disassembly protection plate is arranged in a fixing area of the connecting plate.

In an embodiment, see fig. 7, 8, it dodges groove 220 to be provided with the key cap on the installation base 200, the key cap dodges groove 220 and sets up between two parties the upper surface of installation base 200, the key cap dodges groove 220 certainly upper surface undercut forms the trough-shaped, have on the key cap with the key cap dodges groove 220 complex arch 310, the key cap passes through the arch with the key cap dodges groove cooperation location.

In an embodiment, with continued reference to fig. 7 and 8, the key cap avoidance groove 220 includes a first avoidance hole 221, and a second avoidance groove 222 communicated with the first avoidance hole 221, the first avoidance hole 221 and the second avoidance groove 222 are coaxially disposed, the first avoidance hole 221 has a hole diameter larger than the inner diameter of the second avoidance groove 222, the first avoidance hole 221 has one end flush with the upper surface of the mounting boss 200. Promptly first dodge the hole with the second dodges the flute and forms a ladder groove, and the spacing effect in this kind of ladder groove is better, and positioning accuracy improves.

In one embodiment, the first avoiding hole 221 is a through hole, the depth of the first avoiding hole 221 is not less than 1mm, and the inner diameter of the first avoiding hole 221 is 0.5-0.7 cm. First dodge hole 221 with the second dodges groove 222 and is linked together, first dodge hole 221 have first end and with the second end that the first end is relative, first end with the upper surface parallel and level of installation boss 200, the second end with the second dodges the groove top in groove 222 and is connected. The inner diameter of the second avoiding groove 222 is smaller than the aperture of the first avoiding hole 221, the plane of the groove top of the second avoiding groove 222 coincides with the plane of the end face of the second end of the first avoiding hole 221, and the second end of the first avoiding hole 221 is connected with the groove top of the second avoiding groove 222 through a connecting plate. The depth of the second avoiding groove 222 is not less than 1mm, and the inner diameter of the second avoiding groove 222 is 0.6-0.4 cm.

In one embodiment, the depth of the key cap avoiding groove 220 is greater than or equal to 2mm, and if the depth of the key cap avoiding groove is insufficient, the key cap may slide in the key cap avoiding groove, so that the depth is also an important index for positioning and limiting.

In an embodiment, see fig. 3, 6 and 9, the tank bottom that the groove 220 was kept away to the key cap on the installation base 200 is provided with spliced pole 223, spliced pole 223 one end with the tank bottom that the groove 220 was kept away to the key cap links to each other, the other end court with the notch opposite direction's that the groove 220 was kept away to the key cap direction extends, is provided with a plurality of gib block 224, a plurality of on spliced pole 223's the lateral wall gib block 224 is followed spliced pole 223's the central axis direction parallel distribution, spliced pole 223 is pegged graft with little locating hole 420 counterpoint on the base plate 400, little locating hole 420 interference fit on spliced pole 223 and the base plate 400. Of course, for the fixture to be more firmly fixed with the substrate, the connection post 223 may be disposed not only behind the key cap avoiding groove 220 of the installation boss 200, but also at the back of the fixture connection plate. The guide strip on the connecting column can play a guiding role, and when the small positioning holes on the connecting column and the substrate are aligned and inserted, the guide strip can be scraped by the small positioning holes on the substrate in the inserting process to form interference fit. The spliced pole on the tool is fixed tool and base plate, has guaranteed the base plate and to the holistic supporting role of tool, makes the base plate with the tool is whole more stable, and the holistic stability of tool when further guaranteeing to spray paint guarantees the precision of spraying paint, improves the yields and the machining efficiency of processing.

In an embodiment, see fig. 6, the length of the connecting column 223 is greater than the thickness of the substrate 400 (the substrate is not shown in fig. 6, therefore, the substrate cannot be compared from the drawing, and fig. 6 is only a schematic diagram, and it cannot be understood as being right), the connecting column 223 with the keycap avoids the one end connected to the bottom of the groove 220 to be accommodated in the small positioning hole 420, the other end of the connecting column 223 extends outwards from the small positioning hole 420, the extending end is hot-melted and fixed on the surface of the substrate 400, the extending end is hot-melted to form a flat cake-shaped end, and the diameter of the flat cake-shaped end is greater than the inner diameter of the small positioning hole 420. The end parts of the connecting columns are hot-melted into a flat cake shape, so that the fixing degree of the jig and the substrate is further ensured, and the stability is ensured.

In an embodiment, the connecting plate 100 has first face and second face, first face with the second face sets up relatively, be provided with the installation base 200 that is used for fixed key cap 300 on the first face, be provided with spliced pole 223 on the second face, the one end of spliced pole 223 with connecting plate 100 links to each other, and the other end court deviates from the direction of first face extends, spliced pole 223 and the counterpoint grafting of little locating hole 420 on the base plate 400. The side wall of the connecting column 223 is provided with a plurality of guide strips 224, the plurality of guide strips 224 are distributed in parallel along the central axis direction of the connecting column 223, and the connecting column 223 is in interference fit with the small positioning hole 420 on the substrate 400; the length of the connection posts 223 is greater than the thickness of the substrate 400. The guide bars 224 extend from one end of the connecting column 223 connected with the keycap avoiding groove 220 to the middle of the connecting column 223, and the guide bars 224 are uniformly distributed on the side wall of the connecting column 223 at intervals. Be provided with the key cap on the installation base 200 and dodge groove 220, the tank bottom that the key cap on the installation base 200 dodged groove 220 is provided with spliced pole 223, spliced pole 223 one end with the key cap dodges the tank bottom of groove 220 and links to each other, the other end court with the key cap dodges the opposite direction of notch direction of groove 220 and extends. The spliced pole 223 with the key cap dodges the one end that groove 220 tank bottom links to each other and holds in the aperture 420, the other end of spliced pole 223 certainly aperture 420 stretches out outward, and this overhanging tip hot melt is fixed base plate 400 surface, this overhanging tip is formed flat cake form tip by the hot melt, and the diameter of this flat cake form tip is greater than aperture 420 internal diameter. The connecting column 223 is arranged at the center of the bottom of the keycap avoiding groove 220; the outer diameter of the connecting column 223 may be between 1.8mm and 2.5 mm.

In an embodiment, referring to fig. 1-5, the connection board 100 of the present invention is further provided with a positioning column 180, the positioning column 180 includes a through hole formed on the connection board 100, the through hole has a hole wall extending from the connection board 100 to a first direction and a second direction, the first direction is opposite to the second direction, and the first direction and the second direction are perpendicular to the surface of the connection board 100. A cover plate 181 is arranged at one end of the through hole wall, the cover plate 181 is positioned at one side of the connecting plate 100 where the mounting boss 200 is arranged, a central hole is formed in the cover plate 181 and communicated with the through hole, and the through hole wall and the cover plate 181 form the positioning column 180 on the connecting plate 100. The positioning column penetrates through a main positioning hole on the substrate, which corresponds to the positioning column, and the main positioning hole is clamped on the periphery of the positioning column. Can carry out the direct positioning to the reference column on the key cap paint spraying tool through the compression leg on the automatic machine when spraying paint, prevent that the locating lever from wearing and tearing aluminum plate, extension aluminum plate's life.

In an embodiment, the mounting height of apron 181 is greater than the height of installation base 200, this is the precision of the location when having guaranteed that the reference column of compression leg on the machine on to the key cap paint spraying jig directly fixes a position, because the compression leg inserts in the hole of reference column, if the reference column hole is too shallow then can take place to deflect at the in-process tool that sprays paint, lead to fixed insecure. The cover plate is provided with a center hole, the center hole is communicated with the through hole, so that the inserting condition of the compression column can be seen from the center hole of the cover plate, the installation is further confirmed to be in place, and the reject ratio caused by poor installation is reduced.

In one embodiment, the end of the through hole wall not provided with the cover plate 181 penetrates through the main positioning hole 430 of the substrate 400, and the height of the end of the through hole wall not provided with the cover plate 181 is smaller than the thickness of the substrate 400 or is consistent with the thickness of the substrate 400. Therefore, the main positioning hole of the substrate can be sleeved on the periphery of the hole wall of the positioning column, and the main positioning hole of the substrate is protected from being abraded by the pressing column of the automatic equipment.

In an embodiment, referring to fig. 3, at least two positioning pillars 180 are disposed on the connecting plate 100, and the two positioning pillars 180 are disposed at two ends of the connecting plate 100 respectively. Fixed stationarity of tool can be guaranteed to two reference columns, and the reference column is with automation equipment's compression leg complex, consequently also considers with automation equipment's compression leg quantity, moreover, preferably two the reference column sets up respectively the both ends of connecting plate, and two reference columns are not on a water flat line, and two reference columns are asymmetric in the both sides of connecting plate promptly.

In one embodiment, the positioning column 180 is a hollow cylinder, and an opening is formed at one end of the through hole wall in the first direction, the opening is communicated with the through hole, and the fixing column of the automation equipment is accommodated in the through hole from the opening. The main positioning hole 430 on the substrate 400 is located at the edge of the substrate 400, the inner diameter of the main positioning hole 430 is larger than the outer diameter of the through hole wall, and the end surface of one end of the main positioning hole 430, which is far away from the mounting boss 200, is substantially flush with the end surface of the through hole wall of the positioning column 180 in the second direction. The connecting plate 100 is at least provided with two positioning columns 180, and the two positioning columns 180 are respectively arranged at two ends of the connecting plate 100. The two positioning columns 180 are diagonally distributed on the connecting plate 100.

In an embodiment, refer to fig. 7, still be provided with a plurality of last preformed holes 230 on the installation boss 200, the pore wall of going up preformed holes 230 certainly installation boss 200 surface downwardly extending is in order to run through lower preformed holes 440 on the base plate 400, the pore wall of going up preformed holes 230 hold in the lower preformed holes 440, the aperture of going up preformed holes 230 is less than the aperture of lower preformed holes 440. Go up preformed hole and lower preformed hole and can expose lacquer, and when spraying paint, the tool below forms the negative pressure, and the negative pressure can further fix the key cap on the installation boss through last preformed hole and lower preformed hole.

In one embodiment, referring to fig. 7 and 8, a key cap mounting groove 210 is further disposed on the mounting boss 200, the key cap mounting groove 210 includes a side groove 211 and a surface groove 212, and the key cap 300 is connected to the mounting boss 200 through the side groove 211 and the surface groove 212 in a snap-fit manner; the side recess 211 is seted up the surface of installation base 200, just the side recess 211 is followed the lateral wall of installation base 200 is seted up, side recess 211 with the height of a lateral wall of the coincidence of the lateral wall of installation base 200 is less than the height of installation base 200, this kind of difference in height make things convenient for the fixed screens of key cap and installation base more, the installation of being convenient for, also be convenient for disassemble, and be provided with the shrinkage pool on this lateral wall, the shrinkage pool cooperatees with the reinforcement 3213 of pothook 321 on the key cap 300, the reinforcement 3213 card of pothook 321 is established in the shrinkage pool.

In an embodiment, continue to refer to fig. 6, surface recess 212 sets up the surface of mounting boss 200, be provided with one trip shaft on the cell wall of surface recess 212, the mounting height of trip shaft is less than the upper surface of mounting boss 200, trip shaft with the cassette on the key cap is counterpointed the installation and can be guaranteed to connect fixedly, and its rotation angle that allows a little of cooperation of trip shaft and cassette, and the design is more reasonable, has reserved the error buffering, and the rotation in the deviation angle does not influence the precision of spraying paint promptly, and relative rigid connection, and such connected mode that allows a little to deflect is difficult for causing the key cap to damage. And the clamping shaft clamping seat is connected to prevent paint from flowing into the seat hole of the clamping seat, abnormal sound is prevented from being generated when the keyboard is knocked after the key cap with the paint in the seat hole is installed into the keyboard, the service life of the keyboard is shortened, and user experience is also influenced.

In an embodiment, with continued reference to fig. 8, the mounting boss 200 is provided with two side grooves 211, two surface grooves 212 and three upper preformed holes 230, the three upper preformed holes 230 are arranged in a triangular manner, and the side grooves 211 and the surface grooves 212 are arranged at the periphery of the three upper preformed holes 230. Such design makes surface utilization on the mounting boss higher, and the setting of side recess, surface recess and last preformed hole can guarantee the installation stability of key cap, guarantees the precision of spraying paint.

The utility model provides a key cap of fixing on key cap paint spraying jig can refer to FIG. 7, 8, 9 and FIG. 13, 14, the key cap paint spraying jig is last to be provided with fixedly the installation base 200 of key cap 300, be provided with key cap mounting groove 210 on the installation base 200, be provided with on the key cap 300 with key cap mounting groove 210 matched with buckle structure 320, the key cap 300 passes through buckle structure 320 with key cap paint spraying jig fixed connection.

In one embodiment, the key cap mounting groove 210 of the mounting boss 200 includes a lateral groove 211 and a surface groove 212, and the key cap 300 is snap-connected with the lateral groove 211 and the surface groove 212 through a snap structure 320.

In an embodiment, the side recess 211 is seted up the surface of mounting boss 200, just the side recess 211 is followed the lateral wall of mounting boss 200 is seted up, the side recess 211 with a lateral wall of the coincidence of the lateral wall of mounting boss 200 highly is less than the height of mounting boss 200, and this kind of difference in height makes things convenient for the key cap and the fixed screens of mounting boss, the installation of being convenient for, also is convenient for disassemble, and is provided with the shrinkage pool on this lateral wall, the shrinkage pool cooperatees with the reinforcement 3213 of pothook 321 on the key cap 300, the reinforcement 3213 card of pothook 321 is established in the shrinkage pool. The surface groove 212 is formed on the surface of the mounting boss 200, a clamping shaft 213 is arranged on the wall of the surface groove 212, and the mounting height of the clamping shaft 213 is lower than the upper surface of the mounting boss 200; the fastening structure 320 of the key cap 300 includes a hook 321 engaged with the side groove 211, and a fastening seat 322 engaged with the surface groove 212. The card axle with the cassette on the key cap is counterpointed the installation and can be guaranteed to be connected fixedly, and its permission a little turned angle of cooperation of card axle and cassette, and the design is more reasonable, has reserved the error buffering, and the rotation in the deviation angle does not influence the precision of spraying paint promptly, and relative rigid connection, and such connected mode that allows a little deflection is difficult for causing the key cap to damage. And the clamping shaft clamping seat is connected to prevent paint from flowing into the seat hole of the clamping seat, abnormal sound is prevented from being generated when the keyboard is knocked after the key cap with the paint in the seat hole is installed into the keyboard, the service life of the keyboard is shortened, and user experience is also influenced.

In one embodiment, the hook 321 of the fastening structure 320 has a reinforcement 3213, and the reinforcement 3213 is received in a recess on a sidewall of the lateral groove 211; a clamping shaft 213 is disposed on a wall of the surface groove 212, and the key cap 300 is fixedly connected to the clamping shaft 213 of the surface groove 212 through the clamping seat 322. The reinforcing body is arranged on the side surface of the supporting column and connects the supporting column with the edge of the keycap, so that the clamping hook is higher in strength and is not easy to break. Through the structural design, the supporting column and the top plate form a clamping hook matched with the side groove of the mounting boss.

In one embodiment, the hook 321 includes a supporting column 3211 and a top plate 3212 connected to the supporting column 3211, one end of the supporting column 3211 is connected to the back of the keycap 300, and the other end is connected to the top plate 3212, the cross-sectional shape of the supporting column 3211 is "L" shaped, the top plate 3212 is rectangular, the top plate 3212 covers the plate surface of the supporting plate, and the reinforcing body 3213 is disposed on the side wall of the supporting column 3211; the clamping seat 322 has a seat hole 3221 matching with the clamping shaft 213, a central axis direction of the seat hole 3221 is the same as the central axis direction of the clamping shaft 213, a hole wall of the seat hole 3221 has an opening, and the clamping shaft 213 is accommodated in the seat hole 3221 from the opening. The card axle with the cassette on the key cap is counterpointed the installation and can be guaranteed to be connected fixedly, and its permission a little turned angle of cooperation of card axle and cassette, and the design is more reasonable, has reserved the error buffering, and the rotation in the deviation angle does not influence the precision of spraying paint promptly, and relative rigid connection, and such connected mode that allows a little deflection is difficult for causing the key cap to damage.

In one embodiment, the seating hole 3221 is a circular through hole, and the width of an opening on the wall of the seating hole 3221 is smaller than the length of the diameter of the seating hole 3221; the cross section of the clamping shaft 213 is a combination of a rectangle and a semicircle, the diameter of the semicircle is larger than the side length of the rectangle, the rectangle and the semicircle are in transitional connection through a bevel edge, the rectangle is close to the bottom of the mounting boss 200, the semicircle is close to the surface of the mounting boss 200, the clamping shaft 213 is accommodated in the seating hole 3221 from the opening of the seating hole 3221, the semicircular section part of the clamping shaft 213 is accommodated in the seating hole 3221, and the rectangular section part of the clamping shaft 213 is located at the opening of the seating hole 3221.

In an embodiment, referring to fig. 6 and 7, the diameter of the semicircular cross section of the fastening shaft 213 of the present invention is larger than the width of the opening on the hole wall of the seat hole 3221, and the fastening seat 322 of the key cap 300 is fastened to the fastening shaft 213 from the opening of the seat hole 3221.

In one embodiment, a key cap avoiding groove 220 is formed in the middle of the upper surface of the mounting boss 200, the key cap avoiding groove 220 is recessed downward from the upper surface to form a groove shape, the key cap 300 has a protrusion 310 matched with the key cap avoiding groove 220, and the key cap is positioned by matching the protrusion with the key cap avoiding groove. The depth of the keycap avoiding groove 220 can be greater than or equal to 2mm, and if the depth of the keycap avoiding groove is insufficient, the keycap can slide in the keycap avoiding groove, so that the depth is also an important index for positioning and limiting.

In an embodiment, the key cap dodges still around groove 220 and has last preformed hole 230, it can be three to go up preformed hole 230, the key cap dodges the central point that groove 220 is located this three preformed hole 230 and puts, it has the pore wall that extends to the base plate direction from installation boss 200 surface to go up preformed hole 230, go up preformed hole 230 and can assist the lacquer of permeating to be unlikely to have foggy lacquer to permeate into the buckle structure of key cap when spraying paint to the key cap, have the guard action.

The utility model also provides a key cap tool of spraying paint's application method, it includes:

the keycap paint spraying jig is fixedly connected to the substrate 400,

the key cap 300 is mounted on the mounting boss 200 of the key cap painting jig,

a pressing column of an automatic machine table is arranged in a through hole of a positioning column 180 of the key cap paint spraying jig,

facing the surface of the key cap paint spraying jig provided with the mounting boss 200 to paint spraying equipment, and spraying paint on the surface of the key cap 300 by using the paint spraying equipment;

after the surface of the key cap 300 is painted, the key cap 300 is detached from the installation boss 200, and the substrate 400 and the key cap painting jig are detached.

Tool pass through a plurality of spliced poles and base plate fixed connection, the spliced pole passes the little locating hole that corresponds on the base plate, the tip of spliced pole stretches out little locating hole, the gib block at spliced pole root is cut by little locating hole for little locating hole interference fit on root and the aluminum plate carries out the hot melt to the spliced pole tip that stretches out at the aluminum plate back, further fixes, improves and fixes a plurality of connecting blocks on aluminum plate stability. The reference column pass the main locating hole that corresponds with the reference column on the aluminum plate, and main locating hole card locates the periphery of reference column, it can go up the reference column of compression leg on to the tool that sprays paint through automatic machine and directly fix a position, prevent that the locating lever from wearing and tearing to aluminum plate. The automatic machine presses the fixed area of the jig, so that the jig can be further fixed, and the multiple fixing effects can ensure the precision of the applied jig during paint spraying.

In an embodiment, utilize paint spraying apparatus right the key cap sprays paint, specifically include:

the spray head of the paint spraying equipment is aligned to the side, provided with the mounting boss, of the key cap paint spraying jig, when paint is sprayed, negative pressure is formed on the side, provided with the substrate, of the key cap paint spraying jig, and the atomized paint which is not attached to the key cap is sucked out through the upper paint through holes of the key cap paint spraying jig by the negative pressure. The mode can ensure the uniformity of paint spraying and improve the yield of products.

In one embodiment, will the base plate 400 with the keycap painting jig split specifically includes:

the key cap paint spraying jig is placed on four ejector pins of a machine table in a mode that a substrate faces upwards, the four ejector pins are respectively correspondingly supported with the disassembling protection sheets on four corners of the key cap paint spraying jig,

and applying impact force from the upper part of the substrate of the key cap paint spraying jig, wherein the ejector pin penetrates through the disassembled protective sheet, and the key cap paint spraying jig is separated from the substrate.

Tool can use 3 times in the production is used, if further use again can have the not up to standard hidden danger of required precision, consequently, in order to the machining precision of product to meet the demands, just will tear open when the tool has used 3 times and trade, and the corresponding base plate does not yet need to be changed, the base plate can be used always, until it is not conform to the processing requirement, consequently just can locate the protection that receives the tool everywhere as the base plate of resistant articles for use, in order to prolong its life, this is not only in consideration of the cost, also be in consideration of resource continuous utilization.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example" or "some examples" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by one skilled in the art.

While embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications and changes may be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims

1. The utility model provides a key cap paint spraying apparatus with keep off lacquer strip, its characterized in that, it includes connecting plate (100), connecting plate (100) include a plurality of mutual overlap joint sub-connecting plate, every be provided with installation boss (200) for fixed key cap (300) on the sub-connecting plate, connecting plate (100) are provided with be provided with on the one side of installation boss (200) and keep off lacquer strip (130), it is in to keep off lacquer strip (130) around being equipped with the round on connecting plate (100), the part that lies in this round on connecting plate (100) and keeps off lacquer strip (130) inboard forms the district of spraying paint, the part that lies in this round on connecting plate (100) and keeps off lacquer strip (130) outside forms the fixed area.

2. A key cap painting apparatus according to claim 1,

the mounting boss (200) is disposed within the painting zone,

the height of the paint blocking strip (130) is lower than that of the mounting boss (200).

3. A key cap painting apparatus according to claim 1,

the paint blocking strip (130) extends from the surface of the connecting plate (100) to a direction away from the connecting plate (100) vertically.

4. A key cap painting apparatus according to claim 1,

the paint blocking strip (130) comprises four sections, the paint blocking strip (130) is arranged on the connecting plate (100) in a circle in a winding mode, and the paint blocking strip (130) surrounds the surface of the connecting plate (100) to form the paint spraying area.

5. A key cap painting apparatus according to claim 4,

the four sections of the paint blocking strips (130) are not connected, or,

the four sections of the paint blocking strips (130) are connected end to end in sequence, or,

and two or three adjacent sections of the four sections of the paint blocking strips (130) are connected.

6. A key cap painting apparatus according to claim 1,

a plurality of stacking columns (140) are arranged in a fixing area of the connecting plate (100), the stacking columns (140) are close to the edge of the connecting plate (100), and the stacking columns (140) are uniformly distributed around the connecting plate (100).

7. A key cap painting apparatus according to claim 6,

the total height of the mounting boss (200) and the keycap (300) mounted on the mounting boss (200) is less than the height of the stacking column (140).

8. A key cap painting apparatus according to claim 6,

the number of the stacked columns (140) is more than or equal to three.

9. A key cap painting apparatus according to claim 1,

a plurality of grooves are further arranged in the fixing area of the connecting plate (100), and the grooves are rectangular grooves or semicircular grooves which are formed from the edge of the connecting plate (100) to the inner portion of the connecting plate (100) in a sunken mode.

10. A key cap painting apparatus according to claim 1,

a disassembling protection sheet (170) which is used for abutting against a disassembling platform supporting part when the connecting plate (100) is disassembled is also arranged in the fixing area of the connecting plate (100), the disassembling protection sheets (170) are arranged at four top corners of the connecting plate (100),

the surface of the disassembling protection plate (170) is basically flush with the surface of the connecting plate (100), the edge of the disassembling protection plate (170) is provided with a circle of limiting groove (171), and the depth of the limiting groove (171) is smaller than the thickness of the connecting plate (100).