CN215030800U

CN215030800U - Water-based paint coating equipment for pencils

Info

Publication number: CN215030800U
Application number: CN202022935213.7U
Authority: CN
Inventors: 夏洪伟
Original assignee: Zhejiang Best Intenerated Pencil Wood Co ltd
Current assignee: Zhejiang Best Intenerated Pencil Wood Co ltd
Priority date: 2020-12-09
Filing date: 2020-12-09
Publication date: 2021-12-07
Anticipated expiration: 2030-12-09

Abstract

The utility model belongs to the technical field of the pencil production and processing, a water based paint pencil painting equipment is disclosed, equipment is by setting up painting system and the drying system in the frame, painting system is including setting up in the hopper of frame front end, transversely set up the pusher in the hopper bottom, set up in the lacquer box of pusher tail end, the import side of lacquer box is towards pusher, drying system is by the drying chamber, for the heating pipe assembly of drying chamber provision heat source, the heating pipe assembly is constituteed, heating pipe assembly sets up in the multilayer formula drying chamber, multilayer formula conveying system includes that one deck table does conveyer belt mechanism and a plurality of layers do conveyer belt mechanism, table does conveyer belt mechanism front end and is located the outlet side of lacquer box, the remainder is located the drying chamber, do conveyer belt mechanism and set up in the drying chamber. The utility model discloses can realize the japanning processing of water based paint pencil effectively.

Description

Water-based paint coating equipment for pencils

Technical Field

The utility model belongs to the technical field of pencil production and processing, a japanning technique in the pencil production process is related to, especially a process and equipment that water based paint carries out paint processing to the pencil.

Background

The pencil is used as a traditional writing tool and has an irreplaceable position, in order to protect and decorate the wooden-holder pencil, the surface of the wooden-holder pencil needs to be coated with paint, and the paint used by the existing pencil enterprises is basically nitrolacquer, and has high drying speed, good hardness and brightness. However, nitrolacquers contain a large amount of organic solvents such as toluene, xylene, methyl acetate, etc. The organic solvent added in the nitrolacquer can seriously harm the natural environment and the health of people in the production and use processes; the most obvious characteristic of the organic solvent is that the organic solvent has strong pungent odor which can seriously irritate eye mucosa, nasal mucosa, respiratory tract mucosa and cause skin allergy, and meanwhile, a certain amount of plasticizer is added into the nitropencil paint, which can cause certain adverse effects on human health.

The water paint is synthesized by using water as solvent or dispersant, special resin as film forming matter and relevant assistants and through certain mixing process. Because water is used as a dispersion medium, the harm of toxic and harmful substances such as formaldehyde, alcohols, halogenated hydrocarbons, benzene series and the like is thoroughly eliminated, and the environment is not polluted. There is a clear real need to coat pencils with water-based coatings.

However, the drying time of the common water-based paint is much longer than that of the nitrolacquer, the pencils are coated by using the water-based paint and industrial mass production is realized, and the formula of the water-based paint, the painting process of the pencils and painting equipment need to be improved necessarily.

Disclosure of Invention

The utility model aims at providing a process and special painting equipment that are adapted to water based paint pencil processing to the processing demand of water based paint pencil in the production practice.

The first purpose of the utility model is to provide a water-based paint pencil painting process, which comprises three procedures of priming paint painting, finish paint painting and gloss paint painting,

the primer painting procedure comprises the following steps of coating and drying for 1-3 times:

coating: the pencil is made to pass through a paint box containing the primer paint at the speed of 280 plus 310 counts/min; the primer coating comprises: 10-20 parts of polyurethane emulsion, 10-20 parts of water-based acrylic emulsion, 0.1-2 parts of defoaming agent, 3-6 parts of film-forming additive, 10-30 parts of talcum powder, 0.5-5 parts of diethanolamine, 15-35 parts of water-based acrylic resin, 0.01-0.03 part of dibutyltin dilaurate, 15-30 parts of ethanol, 15-30 parts of deionized water, 18-25 parts of water-based color paste and 2-4 parts of covering polymer;

and (3) drying: conveying the pencils coming out of the paint box into a drying chamber at intervals by using a surface-drying conveyor belt, keeping conveying for 10-20 seconds in the drying chamber, and then continuously conveying for 20-60 seconds in the drying chamber at intervals by using a solid-drying conveyor belt;

controlling the temperature in the drying chamber to be 55-60 ℃;

the finish paint coating procedure comprises the following steps of coating and drying for 4-6 times:

coating: the pencil passes through the paint box loaded with the finish paint at the speed of 280 plus 310 counts/min; the finish paint comprises: 10-20 parts of polyurethane emulsion, 10-20 parts of water-based acrylic emulsion, 15-30 parts of water-based acrylic resin, 0.1-2 parts of defoaming agent, 3-6 parts of film-forming additive, 0.1-2 parts of wetting agent, 10-30 parts of talcum powder, 2-7 parts of silicon dioxide, 0.5-5 parts of diethanol amine, 0.01-0.03 part of dibutyltin dilaurate, 15-30 parts of ethanol, 15-30 parts of deionized water and 2-4 parts of covering polymer;

controlling the temperature in the drying chamber to be 55-60 ℃;

the gloss painting process comprises the following steps of coating and drying for 1-2 times:

coating: the pencil passes through a paint box loaded with the optical paint coating at the speed of 280-; the varnish coating comprises: 10-20 parts of polyurethane emulsion, 10-20 parts of water-based acrylic emulsion, 0.1-2 parts of defoaming agent, 0.5-5 parts of diethanolamine, 15-35 parts of water-based acrylic resin, 0.01-0.03 part of dibutyltin dilaurate, 15-30 parts of ethanol, 15-30 parts of deionized water and 18-25 parts of water-based color paste;

the temperature in the drying chamber is controlled at 55-60 ℃.

The utility model discloses a second purpose provides a water based paint pencil japanning equipment to above-mentioned japanning technology, including the frame and set up japanning system and the drying system in the frame, the japanning system is including setting up in the hopper of frame front end, transversely set up at the pusher of hopper bottom, set up in the lacquer box of pusher tail end, and the import side of lacquer box is towards pusher, its characterized in that, drying system comprises drying chamber, heating pipe group, the multilayer formula conveying system who provides the heat source for the drying chamber, heating pipe group sets up in the drying chamber, multilayer formula conveying system includes that one deck table does conveyor belt mechanism and a plurality of layers of conveyor belt mechanism really do, table does conveyor belt mechanism front end and is located the outlet side of lacquer box, and the remainder is located the drying chamber, really do conveyor belt mechanism and set up in the drying chamber.

Furthermore, the surface drying conveyor belt mechanism consists of a conveyor belt driving mechanism and two parallel inclined conveyor belts, the two inclined conveyor belts are arranged in parallel to the length direction of the rack, and the upper surfaces of the upper layers of the two inclined conveyor belts incline oppositely. The pencils ejected from the paint box transversely fall on the surface drying conveyor belt, two ends of each pencil are respectively lapped on two parallel inclined conveyor belts, only the end part of each pencil is in contact with the conveyor belts, and the penholder part is suspended between the two inclined conveyor belts. The freshly painted pencils complete the drying of the water-based paint coating surface on the surface dry conveyor run and complete the drying process of the interior of the coating on the remaining solid dry conveyor run. The conveying mechanism is characterized in that the actual-dry conveying belt mechanism is composed of a conveying belt driving mechanism and a horizontal conveying belt, the horizontal conveying belt is parallel to the length direction of the rack, one layer of actual-dry conveying belt mechanism is arranged below the surface-dry conveying belt mechanism, the starting end of the one layer of actual-dry conveying belt mechanism receives a pencil falling from the tail of the surface rod conveying belt mechanism, and between different layers of actual-dry conveying belt mechanisms, according to the conveying sequence of the pencils, the starting end of the next layer of actual-dry conveying belt mechanism receives the pencil falling from the tail end of the previous layer of actual-dry conveying belt mechanism, or the pencil falling from the tail end of the previous layer of actual-dry conveying belt mechanism is lifted to the starting end of the next layer of actual-dry conveying belt mechanism by a lifting mechanism.

Further, the multi-layer conveying system also comprises a layer of return conveying belt mechanism. The upper layer of the multi-layer conveying system is arranged outside the drying chamber.

Furthermore, the heating pipe set comprises a plurality of heating pipes arranged along the length direction of the rack, the surfaces of the heating pipes are provided with radiating fins, and the heating pipes are connected with an external steam source so as to control the internal temperature of the drying chamber; and the top of the drying chamber is provided with a steam-radiating port for radiating moisture generated by evaporating the water-based paint.

Preferably, the rack comprises a front end and a main body part, the main body part is a frame structure, the drying chamber is formed by installing glass cover plates on the upper surface, the lower surface and the side surface of the main body part of the rack, and a plurality of slidable glass windows are arranged on the side surface. The glass is directly additionally arranged on the metal frame of the main body part of the frame, so that the reconstruction cost can be reduced, and a drying chamber structure frame does not need to be manufactured independently. The glass window capable of being opened in a sliding mode is arranged, so that the inspection and maintenance are facilitated, and the requirements for heat dissipation and ventilation are met when necessary.

Further, pusher includes pushing mechanism and spout, and the spout is adjusted well with the blanking mouth of hopper bottom, and the spout width can only hold single pencil, and the degree of depth is not more than single pencil diameter, preferably half pencil.

Optionally, the pushing mechanism is an air cylinder pushing mechanism and comprises a pushing air cylinder and a pushing rod driven by the air cylinder, the pushing rod moves in the sliding groove, the pencil falling into the sliding groove is pushed to move forwards in a reciprocating mode, and the pushing stroke is larger than the length of one pencil.

Optionally, push mechanism is chain push jack mechanism, including setting up in the parallel chain of spout below and spout, sets up a plurality of push jacks with the interval that is greater than pencil length on the chain, and the spout bottom is equipped with the gap that supplies the push jack upper end to get into the spout along length direction, and in the upper end stretched into the spout from spout bottom gap when the push jack ran to the top along with the chain, promoted the pencil and gos forward, and the height that the push jack got into the spout is less than the height of single pencil in the spout.

Furthermore, a rotatable circular baffle is arranged on the other side, opposite to the paint box, of the starting end of the surface drying conveyor belt mechanism, the blocking surface of the circular baffle faces the paint box, the lower end of the circular baffle is in surface contact with the inclined conveyor belt, and the conveyor belt and the inclined conveyor belt are driven to rotate through friction. The round baffle can block the pencils ejected out of the paint box, so that the pencils are prevented from flying out of the conveyor belt, and meanwhile, a uniform positioning effect is achieved; the rotatable design avoids the deposition of dried paint at a certain point on the baffle.

Preferably, the number of the solid-dry conveyor belt mechanisms is two, wherein the first layer and the second layer of the solid-dry conveyor belt mechanisms are sequentially arranged in the drying chamber and below the surface-dry conveyor belt mechanism from top to bottom, the tail end of the second layer of the solid-dry conveyor belt mechanism extends out of the drying chamber backwards, an overturning and lifting device is arranged between the tail end of the second layer of the solid-dry conveyor belt mechanism and the starting end of the return conveyor belt mechanism, and pencils at the tail end of the second layer of the solid-dry conveyor belt mechanism are transferred to the starting end of the return conveyor belt mechanism through the overturning and lifting device.

Furthermore, the hopper comprises two vertical plates perpendicular to the pushing direction of the pushing device, and a small hole allowing a pencil in the chute to pass through is formed in the center of the lower portion of each vertical plate. The inner sides of the vertical plates are respectively provided with a guide strip, the upper side of the guide strip is inclined and the lower side of the guide strip is vertical to form a funnel shape, the vertical section of the guide strip forms a discharging channel, the width of the discharging channel can only accommodate one pencil, and the lower end of the discharging channel is a discharging opening and is aligned with the sliding groove.

Preferably, the upper end of the blanking channel is provided with a wave wheel. The middle of the hopper is provided with a vibrating plate, the rear end of the vibrating plate is fixed on the rotating shaft, and the rotating shaft is connected with the cam mechanism to rotate in a small-angle reciprocating mode, so that the front end of the vibrating plate is driven to periodically swing up and down, and the front end of the vibrating plate is in contact with a pencil in the hopper to prevent the pencil from being blocked.

The utility model has the advantages that: by means of the multi-layer conveying system design, the drying stroke of the pencil after painting is long enough; and a semi-closed drying chamber made of a heating pipe and a glass cover plate which generate heat efficiently is arranged, so that the air temperature around the conveyor belt can be obviously improved, and the drying time of the corresponding water-based paint coating is obviously shortened. Thereby meeting the process requirements of processing the water-based paint pencil with lower cost. In addition, measures such as changing the layout of the heating pipeline and the temperature of hot steam can be adopted to meet different processing requirements more accurately.

Drawings

Fig. 1 is an overall schematic diagram of a pencil varnishing apparatus.

Fig. 2 is a schematic view of a hopper and a pushing device.

Fig. 3 is a schematic view of a hopper.

Fig. 4 is a rear view of the hopper.

Fig. 5 is an internal schematic view of the chain blade pushing type pushing mechanism.

Fig. 6 is a sectional view of the chute.

Fig. 7 is a schematic view of a paint box.

FIG. 8 is a schematic view of the beginning of a multi-layer transport system.

FIG. 9 is a schematic end view of a multi-layer transport system.

FIG. 10 is a schematic side view of a three-layer conveyor belt.

FIG. 11 is a schematic side view of a four-tier conveyor belt.

Fig. 12 is an overview of the rubber ring at the paint box outlet.

Fig. 13 is a front view of a rubber ring at the outlet of the paint cartridge.

FIG. 14 is a full plan view of the rubber ring at the exit of the paint box.

Detailed Description

The pencil painting device of the present invention will be further described with reference to the accompanying drawings and the following detailed description.

Example 1

The dashed line segment in fig. 1 is the omitted portion of the multi-tier conveyor system and gantry, which is actually longer, about 10-15 meters in length. FIGS. 8 and 9 are partial schematic views of the starting end and the other end of the multi-layer transport system from the same perspective.

As shown in fig. 1-9, a set of pencil painting equipment comprises a frame 5, and a hopper 1, a pushing device 2, a paint box 4 and a multi-layer conveying system 6 which are fixed on the frame 5. The pushing device 2 comprises a pushing mechanism 3 and a chute 21.

As shown in fig. 2-4, the hopper 1 is mounted above the chute 21, and includes two vertical plates 11 perpendicular to the extending direction of the chute 21, and a small hole 111 at the center below the vertical plate 11 for allowing a pencil in the chute to pass through. The inner sides of the vertical plates 11 are respectively provided with a guide strip 12, the inclined lower part above the guide strip 12 is vertical to form a funnel shape, the width of the vertical section can only accommodate one pencil, two ends of the pencil to be processed can be erected on the guide strip 12, and the vertical section below is singly stacked and orderly and underground falls down. The lower end of the guide strip 12 is a blanking port aligned with the chute 12. The hopper also has an inclined plate 16 of the vertical upright 11, which cooperates with the guide strip 12 to accommodate a large number of pencils to be processed. A pair of impellers 13 are further arranged in the position, close to the narrowing position of the guide strip 12, of the hopper, the farthest ends of the impellers 13 exceed the outline of the guide strip and can be in contact with a pencil, and the impellers can rotate upwards to stir the pencil at the inlet of the vertical section of the guide strip 12 to prevent blockage. The hopper is also internally provided with a vibrating plate 14, the front end of the vibrating plate is in an arc surface, the rear end of the vibrating plate is fixed on a rotating shaft, the rotating shaft is fixedly connected with a transmission plate 17, and the transmission plate 17 is matched with an eccentric cam 15 arranged on the shaft where the wave wheel 13 is positioned. The motor drives the impeller 13 and the eccentric cam 15 on the same shaft to rotate through the belt, and the transmission plate 17 swings back and forth under the action of the eccentric cam 15, so that the front end of the vibrating plate 14 swings up and down. When the vibrating plate 14 swings to the highest point, the arc surface at the front end exceeds the outline of the guide strip 12 and can contact the pencil, so that the pencil stacked on the guide strip 12 is loosened, and retention is avoided.

As shown in fig. 6, the cross section of the sliding groove 21 is rectangular, and is provided with an inverted trapezoidal through groove, the depth of the groove can accommodate about half of the diameter of the pencil, and the width of the groove enables the pencil not to swing transversely in the sliding groove. The sliding groove 21 extends from the lower part of the hopper 1 to the inlet of the paint box 4, a plurality of limiting guide wheels 22 are arranged on the sliding groove at intervals, and the interval distance between the limiting guide wheels 22 is smaller than the length of a pencil. As indicated by the dotted line in the figure, a gap is formed at the bottom of a section of the chute 2 above the pushing mechanism 3 (the pencil cannot fall off).

The pushing mechanism 3 is a sprocket box, and its internal structure is shown in fig. 5, and includes a box body 35, a pair of sprockets 31, and a chain 32, where the sprockets 31 are mounted on a bearing block 33 through a rotating shaft, and one of the rotating shafts is connected with an external driving motor. The chain 32 is parallel to the slide groove 21, and a plurality of push pieces 34 are arranged on the chain at intervals slightly larger than the length of the pencil. The push piece 34 is perpendicular to the advancing direction of the chain 32, and extends into the sliding groove from a gap at the bottom of the sliding groove 21 when the chain 32 moves upwards, so that the pencil is circularly pushed to advance, and the height of the push piece when the push piece enters the sliding groove is lower than the upper surface of the pencil in the sliding groove.

As shown in fig. 7, the lower half of the main body of the paint box 4 is a hollow rectangle, and the upper half is a bucket shape formed by four inclined surfaces. The lower half part of the paint box is provided with two round holes which are communicated front and back, the diameters of the two round holes are slightly larger than the diameter of a pencil, and an inlet 41 and an outlet 42 are respectively formed. An inlet rubber ring 43 and an outlet rubber ring 44 are respectively arranged outside the inlet 41 and the outlet 42, and the rubber rings are fixed with a pressure plate 45 and a pressure plate 46 through bolts. The rubber ring is replaceable, and the specific shape of the inner hole of the rubber ring is matched with that of a pencil. For example: when a pencil with six edges is processed, the inner ring of the rubber ring is hexagonal, and when a round pencil is processed, the inner ring of the rubber ring is in a round angle shape. The rubber ring 43 and the rubber ring 44 have different internal structures, and a round pencil is taken as an example for explanation: one end of the inner hole of the rubber ring 43 is larger, and the other end is smaller, so that a pencil can conveniently enter from the larger end in a positioning way, and the inner hole of the small end of the rubber ring 43 is equal to the round hole of the paint box;

alternatively, the outlet rubber ring 44 is of the same construction as the inlet rubber ring 43, and the bore size is slightly larger than the lead size, so that most of the paint on the pencil shaft passing through the outlet rubber ring is retained in the paint box, and only a thin layer of paint is left on the pencil shaft.

The outlet rubber ring has the problem that when a pencil passes through the inner hole of the outlet rubber ring, the penholder is not positioned at the right center of the inner hole of the middle outlet rubber ring, but the bottom of the penholder passes by clinging to the bottom of the inner hole of the outlet rubber ring, so that the upper part of a paint film formed on the penholder is thick, the paint film is gradually thinned towards two sides, and the bottom is thinnest or has no paint at the bottom.

To this end, the present invention provides an improved outlet rubber ring structure, as shown in fig. 12, 13 and 14: the outlet rubber ring 44 comprises a front end hole 56, a paint collecting cavity 53 and a rear end hole 55, wherein the front end hole 56 and the rear end hole 55 are respectively positioned at the front end and the rear end of the paint collecting cavity 53, the front end of the front end hole is provided with a horn-shaped guide inlet, a positioning support leg 50 is arranged in the front end hole, the bottom of the paint collecting cavity 53 is provided with a cavity paint leakage opening 54, and the center of a circle where the top of the positioning support leg is positioned, the center of the front end hole and the center of the rear end hole are overlapped; the inner diameter of the front end hole 56 is larger than that of the rear end hole 55 but smaller than the aperture of a hole in the paint box communicated with the outlet rubber ring, a semicircular paint blocking piece 51 is arranged above the front end of the rear end hole 55, the front end hole can block more paint in the paint box from entering the outlet rubber ring, the positioning support leg 50 in the front end hole can enable the pencil to achieve accurate radial positioning when the pencil passes through, although water-based paint at the position where the positioning support leg 50 is contacted with the pencil can be scraped off, because the aperture of the front end hole is larger than that of the rear end hole, surplus for filling the paint scraped off by the positioning support leg on the pencil holder is reserved on the pencil holder passing through the positioning support leg, and meanwhile, the paint collecting cavity 53 is arranged to reserve diffusion time for the paint to be diffused so as to fill the paint scraped off by the positioning support leg on the pencil holder, when the pencil passes through the paint collecting cavity 53, the position where the paint is scraped off by the positioning support leg on the pencil holder can be refilled by the paint, the diameter of the rear end hole 55 is slightly larger than that of the pencil and smaller than that of the front end hole 56, a semicircular paint blocking sheet 51 is arranged right above the rear end hole 55, when the pencil passes through the rear end hole 55, the upper half of redundant aqueous paint can be scraped off by the paint blocking sheet 51 and flows down along two sides of the paint blocking sheet, the lower half of redundant paint is blocked by the rear end hole and is left in the paint collecting cavity 53, the redundant paint is finally collected to the paint collecting cavity 53 and flows out from the cavity paint leakage opening 54, the front end hole blocks more paint in the paint box from entering the outlet rubber ring, the paint on the penholder passing behind the paint collecting cavity 53 is not enough, so that the amount of the aqueous paint contained in the paint collecting cavity 53 is small, and only a small material box is required to be placed at the bottom of the cavity paint leakage opening for collecting the flowing-out paint and is timely returned to the paint box 4. The arrangement of the internal structure of the rubber ring 44 can ensure that a paint film formed on the pencil is uniform when the pencil passes through, the pencil can accurately enter the multi-layer transmission system 6 according to an expected track, and in addition, the phenomenon that the pencil is pushed out of the rubber ring to form redundant paint is effectively avoided.

As shown in fig. 1 and 8, the starting point of the multi-layer conveying system 6 is arranged near the paint box outlet 42, the conveying direction is perpendicular to the direction of the chute 21, the multi-layer conveying system comprises a first-layer surface-drying conveyor belt mechanism 61 and two-layer solid-drying

conveyor belt mechanisms

62 and 63, the surface-drying conveyor belt mechanism 61 is composed of two

inclined conveyor belts

611 and 612 which are parallel to each other, the upper parts of the two inclined conveyor belts are respectively inclined inwards by 20 degrees, and the inclined conveyor belts are lifted by inclined rollers 613 to realize inclination. A rotatable circular baffle plate 64 is arranged above the inclined conveyor belt 612 opposite to the paint box outlet 42, the circular baffle plate 64 is perpendicular to the inclined conveyor belt 612, the lower end of the circular baffle plate is in contact with the surface of the inclined conveyor belt, and the inclined conveyor belt 612 can be driven to rotate by moving.

As shown in fig. 8, 9 and 10, the surface-dry conveyer 61, the first-layer-dry conveyer 62 and the second-layer-dry conveyer 63 are arranged from top to bottom in this order, and the pencils fall to the starting point of the lower conveyer after the upper conveyer moves to the tail end thereof, and start to be conveyed reversely. In fig. 8 and 9, the surface dry conveyor belt mechanism 61 and the second layer of real dry conveyor belt mechanism 63 are conveyed from right to left, the first layer of real dry conveyor belt mechanism 62 is conveyed from left to right, in order to make the connection of the conveyor belt mechanisms more convenient, the starting point end of the first layer of real dry conveyor belt mechanism 62 is longer than the terminal point end of the surface dry conveyor belt mechanism 61, and the starting point end of the second layer of real dry conveyor belt mechanism 63 is longer than the terminal point end of the first layer of real dry conveyor belt mechanism 62. A stop piece 65 is arranged behind the end points of the surface-dry conveyor belt mechanism 61 and the first layer solid-dry conveyor belt mechanism 62, and can prevent the pencils from being rushed out to a long distance when leaving the upper layer conveyor belt and guide the pencils to fall to a preset position on the lower layer conveyor belt.

Glass cover plates 7 are installed on the upper, lower and both side surfaces of a middle-rear section (a frame main body portion) of the frame 5 equipped with the multi-layer conveying system 6 to constitute a drying chamber. The glass cover plate 7 is directly arranged between metal pipes of the original frame, and a plurality of movable glass windows which can be opened and closed are arranged on the side surface.

The heating pipe group 8 is arranged inside the drying chamber along the direction of the conveyor belt, is turned back after being communicated with one end of the drying chamber, and can be vertically arranged or horizontally arranged. The surface of the heating pipe group 8 is provided with radiating fins, the heating pipes are connected with a boiler, high-temperature steam circulates inside the heating pipes, and the temperature of air in a drying room can be effectively increased. And the top of the drying chamber is provided with a steam-radiating port for radiating moisture generated by evaporating the water-based paint.

When the pencil painting equipment operates, pencils to be processed are placed in the hopper 1, enter the chute 21 one by one under the action of gravity, are driven by the pushing mechanism 3 to move forwards along the chute, pass through the paint box 4 to finish primary water-based paint coating, and then fall onto the surface dry conveying belt mechanism 61 to start a conveying and drying process; the pencil surface paint is dried before leaving the surface drying conveyor 61 and then enters the

solid drying conveyor

62, 63 to complete the drying of the aqueous paint. The discharging groove arranged at the end point of the actual dry conveying belt mechanism 63 can accommodate the dried pencils to wait for the next round of painting or the next procedure.

Example 2

Example 2 the multi-tier conveyor system of example 1 was partially modified, the remainder being the same as in example 1.

As shown in fig. 11 and the related drawings, a layer of return conveyor mechanism 64 is additionally provided in the multi-layer conveyor system of this embodiment, and is disposed above the top-drying conveyor mechanism 61 and outside the glass-covered drying chamber. A lifting device 68 is provided at the end of the second tier solid conveyor mechanism 63. The lifting device 68 comprises a pair of pulleys arranged up and down, a belt is wound around the belt in a figure 8 shape and is arranged on the pulleys, and brackets 681 are arranged on the outer surface of the belt at equal intervals. When the lifting device is operated, the pencils at the tail end of the lower second layer solid dry conveyor belt mechanism 63 can be continuously lifted to the upper part of the return conveyor belt mechanism 64 through the bracket 681 and dumped, and the pencils fall onto the return conveyor belt mechanism 64 along the baffle 66. The end of the return conveyor mechanism 64 is the end of the overall multi-level conveyor system.

The advantage of this scheme is through increasing a conveyer belt mechanism, has further prolonged the drying stroke in limited ground to reach the front end of the good lead of drying of back transfer to equipment, facilitate the coating next time. The conveyer belt mechanism who installs additional sets up in the top, can avoid making change by a wide margin to current device, and the pencil of eminence conveying also is convenient for manual operation. While pencils also perform well in room temperature air at the end of the drying phase.

Claims

1. The utility model provides a water based paint pencil japanning equipment, includes the frame and sets up japanning system and drying system in the frame, the japanning system is including setting up in the hopper of frame front end, transversely set up the pusher in the hopper bottom, set up in the lacquer box of pusher tail end, and the import side of lacquer box is towards pusher, its characterized in that, drying system comprises drying chamber, the heating pipe group that provides the heat source for the drying chamber, multilayer formula conveying system, heating pipe group sets up in the drying chamber, multilayer formula conveying system includes one deck table and does conveyer belt mechanism and a plurality of layers of conveyor belt mechanism futilely, table is done conveyer belt mechanism front end and is located the outlet side of lacquer box, and the remaining portion is located the drying chamber, it sets up in the drying chamber to do conveyer belt mechanism.

2. The apparatus for painting water-based paint pencils as claimed in claim 1, wherein said surface-drying conveyor means is composed of a conveyor driving means and two inclined conveyors parallel to each other, the two inclined conveyors being disposed parallel to the length direction of the frame, the upper surfaces of the upper belts of the two inclined conveyors being inclined toward each other;

the conveying mechanism is characterized in that the actual-dry conveying belt mechanism is composed of a conveying belt driving mechanism and a horizontal conveying belt, the horizontal conveying belt is parallel to the length direction of the rack, one layer of actual-dry conveying belt mechanism is arranged below the surface-dry conveying belt mechanism, the starting end of the one layer of actual-dry conveying belt mechanism receives a pencil falling from the tail of the surface rod conveying belt mechanism, and between different layers of actual-dry conveying belt mechanisms, according to the conveying sequence of the pencils, the starting end of the next layer of actual-dry conveying belt mechanism receives the pencil falling from the tail end of the previous layer of actual-dry conveying belt mechanism, or the pencil falling from the tail end of the previous layer of actual-dry conveying belt mechanism is lifted to the starting end of the next layer of actual-dry conveying belt mechanism by a lifting mechanism.

3. The apparatus according to claim 1, wherein the multi-layer conveyor system further comprises a return conveyor mechanism disposed at an uppermost layer of the multi-layer conveyor system and located outside the drying chamber.

4. The apparatus for painting water-based paint pencils as claimed in claim 3, wherein the conveyor means for conveying the solid matter comprises two layers, wherein the first layer and the second layer of conveyor means for conveying the solid matter are arranged in the drying chamber and below the conveyor means for conveying the surface matter in sequence from top to bottom, the end of the second conveyor means for conveying the solid matter is extended backward out of the drying chamber, and a turning and lifting device is arranged between the end of the second conveyor means for conveying the solid matter and the starting end of the conveyor means for conveying the pencils is arranged between the end of the second conveyor means for conveying the solid matter and the starting end of the conveyor means for conveying the pencil.

5. The apparatus for painting a water-based paint pencil according to claim 1, wherein a rotatable circular baffle is disposed on the opposite side of the starting end of the surface drying conveyor belt mechanism from the paint box, the blocking surface of the circular baffle faces the paint box, the lower end of the circular baffle is in contact with the surface of the inclined conveyor belt, and the conveyor belt is rotated by friction with the inclined conveyor belt.

6. The apparatus for painting pencil with water-based paint according to claim 1, wherein the heating tube set comprises a plurality of heating tubes arranged along the length direction of the frame, the surfaces of the heating tubes are provided with heat dissipation fins, and the heating tubes are connected with an external steam source so as to control the temperature inside the drying chamber; and the top of the drying chamber is provided with a steam dispersing opening for dispersing water generated by evaporating the water-based paint.

7. The apparatus for painting a pencil with an aqueous coating according to claim 1, wherein the frame includes a front end and a main body portion, the main body portion having a frame structure, and the drying chamber is formed by installing glass cover plates on upper, lower and side surfaces of the main body portion of the frame.

8. The water-based paint pencil painting equipment according to claim 1, wherein the pushing device comprises a pushing mechanism and a sliding groove, the sliding groove is aligned with a blanking opening at the bottom of the hopper, the width of the sliding groove can only accommodate a single pencil, the depth of the sliding groove is not greater than the diameter of the single pencil, the pushing mechanism is a chain pushing mechanism and comprises a chain which is arranged below the sliding groove and parallel to the sliding groove, a plurality of pushing pieces are arranged on the chain at intervals greater than the length of the pencil, a gap for the upper end of each pushing piece to enter the sliding groove is formed in the bottom of the sliding groove along the length direction, and when the pushing pieces move to the upper side along with the chain, the upper end of each pushing piece extends into the sliding groove from the gap at the bottom of the sliding groove to push the pencil to advance, and the height of each pushing piece entering the sliding groove is smaller than the height of the single pencil in the sliding groove.

9. The pencil painting equipment with the water-based coating as claimed in claim 8, wherein the hopper comprises two vertical plates perpendicular to the pushing direction of the pushing device, a small hole allowing a pencil to pass through in the chute is formed in the center below the vertical plates, guide strips are respectively arranged on the inner sides of the vertical plates, the upper part of each guide strip is inclined and vertical below the guide strip to form a funnel shape, a vertical section of each guide strip forms a feeding channel with the width capable of accommodating only one pencil, and the lower end of each feeding channel is a blanking port and is aligned with the chute; the upper end of the blanking channel is provided with a wave wheel; the middle of the hopper is provided with a vibrating plate, the rear end of the vibrating plate is fixed on a rotating shaft, and the rotating shaft is connected with a cam mechanism to do small-angle reciprocating rotation, so that the front end of the vibrating plate is driven to periodically swing up and down.