CN105032676B - A paint roller for wooden toys - Google Patents

Abstract

The invention discloses a paint roller for a wooden toy, which comprises a frame and a cylinder installed on the frame, the cylinder includes a cylinder wall surrounding a cylinder and two end caps, the cylinder body The central axis is arranged horizontally or obliquely. The cylinder is divided into a communication area and a stirring area below the communication area in the radial direction. The stirring area is equipped with a spiral stirring part extending axially to both end covers. The driving end of the component protrudes from one end cover to connect to the power source, and the other end cover is provided with a discharge port corresponding to the discharge end of the spiral stirring part, and the connecting area is provided with a paint spray port for installing a nozzle and an exhaust port for connecting an exhaust fan 1. Connect the hot air inlet and the feed port of the hot air source; the invention adopts a drum structure integrating painting and drying, sealed operation, simple structure, convenient control, and effectively controls the waste gas emission of wooden play roller paint, and effectively Improve the quality and production efficiency of wood play painting, and reduce the labor intensity of workers.

Description

A paint roller for wooden toys

technical field

The invention relates to the technical field of parts painting, in particular to a paint roller for wooden toys.

Background technique

At present, the wooden products sold on the market, such as wooden toys and other products, will be coated with a layer of environmental protection paint on the surface, which has the effect of being beautiful and protecting the product materials. Existing wood product painting process generally adopts traditional manual painting or spraying method, and the workman directly operates one by one painting on the made wood product, and also will send to dry after painting. This method of painting is time-consuming, labor-intensive, and has low work efficiency; it is harmful to the body of the operator and causes serious environmental pollution; the quality of the spray paint is unstable, the thickness of the paint attached to the surface of the product is uneven, the paint is wasted seriously, and the production cost is increased.

Therefore, in order to solve the above problems, researchers have proposed an automatic paint rolling machine, and the patent literature of the authorized announcement number CN202238503U discloses a kind of paint rolling machine, including a frame, a variable speed motor and a transmission mechanism installed on the frame, and through the transmission A paint roller that is connected in linkage with the output shaft of the variable-speed motor; the transmission mechanism includes a rotating shaft installed on the frame, gears respectively installed on the output shaft and the rotating shaft of the variable-speed motor, and a linkage connecting the two gears chain; the bottom of the paint roller is fixedly connected to the output end of the rotating shaft, and the central axes are consistent. Compared with the existing technology, the present invention uses a paint roller to paint wood products, replacing the original traditional manual painting or spraying methods, which can make the paint liquid evenly adhere to several wood products, and at the same time It can also prevent the painted wooden products from sticking to each other, saving time, labor and materials; it solves the technical problems of environmental pollution, low production efficiency and unstable product quality in the existing wooden product painting process.

When the above-mentioned device is processing wooden toy blocks, the wooden toy blocks are placed in the paint roller, accounting for about 2/3 of the volume of the whole cylinder. The entrance of the paint roller is open, and the paint roller rotates clockwise at a certain speed driven by the motor. , to drive the toy wooden blocks in the roller to turn over together, and at the same time, use the artificial spray gun to spray the paint into the barrel to achieve the effect of rolling paint evenly. While the paint roller is rotating, a certain amount of hot air is introduced to dry it, and the temperature in the roller is controlled at about 50-60°C. The drying hot air is generally obtained by heating the air with a firewood boiler.

However, due to the use of an open and open paint roller for the painting operation, during the process of painting and hot air drying, the exhaust gas from spraying paint and the exhaust gas from drying hot air escape from the opening of the paint roller, and are discharged in an unorganized manner, seriously polluting the workshop environment, and It is labor-intensive and time-consuming to spray paint on wooden parts with a spray gun. It is difficult to grasp the quality of the paint, and there are problems such as low paint rate and serious paint waste. Moreover, a wood-fired boiler is used to heat the air for drying, the temperature is not easy to control, and the boiler flue gas is discharged directly, which is neither energy-saving nor environmentally friendly. In order to improve the working environment, an exhaust hood is traditionally used for forced ventilation above the paint roller, but there are problems such as unsatisfactory pollution control effect, large ventilation air volume, and high energy consumption. Therefore, the problem of exhaust gas pollution from rolling paint spraying is an important problem to be solved urgently.

Contents of the invention

The invention provides a paint roller for wooden toys, which effectively solves the problem of serious environmental pollution caused by waste gas generated during the operation of conventional traditional paint rollers, greatly improves the working environment, and at the same time improves work efficiency and product quality.

A paint roller for wooden toys, comprising a frame and a cylinder mounted on the frame, the cylinder includes a cylindrical wall and two end covers, the central axis of the cylinder is horizontal or Arranged obliquely, the cylinder is divided into a communication area and a stirring area below the communication area in the radial direction. The stirring area is equipped with a spiral stirring part extending axially to both ends of the cover. The driving end of the spiral stirring part One end cover is extended to connect the power source, and the other end cover is provided with a discharge port corresponding to the discharge end of the spiral stirring part, and the connecting area is provided with a paint spray port for installing a nozzle, an exhaust port connected with an exhaust fan, and a hot air source. The hot air inlet and feed port.

In the present invention, the central axis of the cylinder body is inclined or arranged horizontally, so that the feed materials are gathered in the stirring area, and the spiral stirring parts are used in the stirring area to stir the wooden toys, and a connecting area is set above it for spraying paint and evenly passing through the mixing area. Enter the hot air of drying wood and discharge the exhaust gas uniformly.

When the present invention is used, the wooden toy (wooden toy) to be sprayed is put into the barrel from the feed port, the feed port is closed, the power source drives the spiral stirring part to rotate and stir the wooden toy, and the nozzle of the spray gun is installed at the paint spray port Spray the paint into the barrel, the hot air inlet is connected to the hot air source to send the hot air into the barrel for drying, the exhaust fan is connected to the exhaust port to extract the waste and then purify it, after the wooden toy is painted and dried, open the outlet, and the power The source drives the spiral stirring part to rotate to output the wooden toys into the barrel. The spiral stirring part not only plays the role of stirring, but also can conveniently output the material, which is convenient to use.

The hot air source can be a blower and a boiler that provide hot air. Preferably, the hot air source is an electric hot air dryer installed at the hot air inlet, including an electric heater and a device for sending the heat generated by the electric heater into the cylinder body. fan. The electric heater is easier to control the heating temperature, which can improve the drying quality of the paint surface.

The cylinder can be arranged horizontally or inclined. Preferably, the inclination angle of the central axis of the cylinder relative to the horizontal plane is 20-25°. Because the spiral stirring part has the function of conveying, it is easy to make the material accumulate. Therefore, when the cylinder is tilted at a certain angle, when the material accumulates to one end, it will fall to the other end due to gravity, so that the stirring efficiency is improved; but if the angle is too high If it is too large, it is not only difficult to transfer upwards, but also causes the height of the drop to be too large, which is easy to damage the wooden plaything.

In order to facilitate material feeding and discharging, preferably, the feeding port is arranged on the end cover provided with the feeding port.

Since the cylinder body is arranged obliquely, one end cover is lower and the other is higher. Preferably, the feed inlet and outlet are arranged on the higher end cover. The feed inlet and discharge are arranged on the higher end cover, which is convenient for feeding and discharging.

In order to allow the waste gas to be discharged quickly, preferably, the paint spraying port, the exhaust port and the hot gas inlet are arranged on the cylinder wall, and the position of the exhaust port is higher than the hot gas inlet. Since the hot gas flows upward, the above setting can make the gas entering from the hot gas inlet flow to the exhaust port, quickly bring out the exhaust gas, and the hot gas is easier to enter, and the drying effect is better.

Since the barrel is arranged obliquely, the top edge of the barrel is also inclined. Further preferably, the hot gas inlet is arranged at the end of the top edge of the barrel wall, and the exhaust port is arranged at the top end of the top edge of the barrel wall. The above setting allows the hot air to enter from the end of the top edge of the cylinder wall, flow upwards in the cylinder, and then flow out from the top of the top edge of the cylinder wall, so that the hot air can circulate in the entire cylinder, and the exhaust gas can be discharged quickly while improving the drying effect.

In order to take into account both the stirring effect and the drying effect, preferably, the ratio of the diameter of the spiral stirring member to the diameter of the cylinder is 1:2 to 2:3, and the ratio of the spiral diameter to the pitch of the spiral stirring member is 8:5 ~9:4, the inclination angle of the helical blades of the helical stirring component is 55-60°. For example, when the diameter of the cylinder is 900 mm, the diameter of the spiral stirring member is 300-450 mm. The above structure improves the drying efficiency under the condition of ensuring uniform stirring.

In order to reduce the amount of paint attached to the helical blades and at the same time ensure gas circulation during agitation so that the wooden toys can be dried evenly, preferably, the helical blades of the helical stirring part are provided with evenly distributed ventilation holes.

The diameter of the air hole should not be too large. Preferably, the ratio of the diameter of the air hole to the diameter of the spiral stirring member is 1:45˜1:40.

In order to take into account the mechanical strength of the spiral blade, the center-to-center distance of adjacent vent holes should not be too small, that is, the density of the vent holes should not be too large. Preferably, the distance between the center-to-center distance of any adjacent vent hole and the diameter of the vent hole The ratio is 4:3～9:5.

In order to make the painting more uniform and more efficient, preferably, there are a plurality of painting openings evenly arranged along the axial direction.

Beneficial effects of the present invention:

The invention adopts a drum structure integrating spraying and drying, airtight operation, simple structure, convenient control, effectively controls the waste gas emission of wooden play roller paint, avoids the unorganized discharge of organic waste gas from spray painting; Play painting quality and production efficiency, reduce the labor intensity of workers, energy saving and environmental protection, and truly realize the clean production of wooden play.

Description of drawings

Fig. 1 is a structural schematic diagram of the device of the present invention.

FIG. 2 is a schematic cross-sectional view of FIG. 1 along the direction A-A.

Fig. 3 is a right side view of Fig. 1 .

detailed description

As shown in Figures 1 to 3, the paint rolling machine for wooden toys in this embodiment includes: a frequency conversion motor 1, a cylinder body 2, an electric hot air dryer 3, a paint spray gun inlet 4, an exhaust port 5, and a feed port 6. It is composed of a discharge port 7, a spiral stirring part 8, and an intelligent controller 9.

The cylinder 2 includes a cylindrical wall and two end caps. The central axis of the cylinder is inclined at an angle of 25°. The cylinder 2 is divided into a communication zone 21 and a stirring tank below the communication zone 21 along the radial direction. Zone 22, the stirring zone 22 is equipped with a spiral stirring member 8 extending axially to both ends of the cover, and the connecting zone 21 is provided with a spray gun inlet 4 for installing a spray gun nozzle, an exhaust port 5 connected to an exhaust fan, and an electric hot air dryer 3. The driving end of the spiral stirring part protrudes from one end cover to connect with the frequency conversion motor 1, and the other end cover is provided with a discharge port 7 corresponding to the discharge end of the spiral stirring part 8.

The hot air inlet of the electric hot air dryer 3 is arranged at the end of the top edge of the cylinder wall, and the exhaust port 5 is arranged at the top of the top edge of the cylinder wall.

When using this embodiment, first open the cover of the feed inlet 6, add a certain amount of wood to be varnished into the cylinder body, after closing the cover, set the spray paint parameters, spiral stirring speed, and hot air drying through the intelligent controller 9 After running for a period of time, after the wooden toys are painted, open the cover of the discharge port 7, and rotate at a low speed through the spiral stirring part 8 to transport the painted pieces, and the wooden toys painting process is completed. The paint spray exhaust gas generated during the painting and drying process is collected through the exhaust port 5 and then discharged after being purified and treated by the subsequent purification device to meet the standard.

The electric hot air dryer 3 is heated by resistance wire, the heating power is 0.5-1.0kW, the blower power is 0.25kW, the air volume is 0.5-1.5m ³ /s, and the heating working time is automatically controlled by the gas temperature sensor set in the drum.

The diameter of the cylinder is 900mm, the helical diameter of the helical stirring part 8 is 400mm, the pitch is 200mm, the inclination angle of the helical blade is 55°, and the helical blade is provided with air holes 81 with a diameter of 10mm, which are evenly distributed, and the center between each air hole The distance is 17mm.

The intelligent controller 9 can control the spraying parameters, spiral stirring speed, hot air drying temperature, and running time through program settings. The spraying parameters include spray pressure, spray volume and nozzle moving speed settings. The spray pressure setting range is less than 0.7MPa , the air injection volume setting range is 0~0.2m ³ /min; the spraying spiral stirring speed is set at 0~300 rpm frequency conversion; 40min).

This embodiment aims at the important problems existing in the existing rolling paint process, according to the requirements and characteristics of the wood play rolling paint process, adopts a drum structure integrating painting and drying, airtight operation, and intelligent control of operating parameters, with simple structure, The control is convenient, eliminating the need for the hot air drying boiler device for wood play paint drying, effectively controlling the waste gas generated by wood play roller paint, avoiding the unorganized emission of organic waste gas from spray painting; at the same time, it also effectively improves the wood play paint High quality and production efficiency reduce the labor intensity of workers, save energy and protect the environment, solve the problems of low efficiency, difficult quality control, and serious pollution of spray paint exhaust gas, and truly realize clean production in the wood play industry.

Claims (7)

1. a kind of paint roller of wooden toy, including frame and rack-mounted cylinder, the cylinder include surrounding Into the barrel and two end cap of tubular, it is characterised in that the central shaft of the cylinder horizontally or diagonally arranges, edge in the cylinder Radially it is divided into connected region and the stirring area below connected region, the stirring area, which is provided with, to be axially extended to two end cap Auger part, the drive end of the auger part stretches out end cap connection power source, another end cap correspondence spiral shell The discharge end of rotation mixing component offers discharging opening, spray painting mouth of the connected region provided with installation nozzle, the row for connecting exhaust blower Gas port, the hot air intake for connecting hot air source and charging aperture；The angle of inclination of the central shaft relative level of the cylinder is 20 ~25 °；The spray painting mouth, exhaust outlet and hot air intake are arranged on barrel, and the position of the exhaust outlet is entered higher than the hot gas Mouthful；The hot air intake is arranged on the end on barrel top edge, and the exhaust outlet is arranged on the top on barrel top edge.

2. the paint roller of wooden toy as claimed in claim 1, it is characterised in that the charging aperture, which is arranged on, to be offered out On the end cap of material mouth.

3. the paint roller of the wooden toy as described in claim 1~2 any claim, it is characterised in that the spiral The diameter of mixing component and the diameter ratio of cylinder are 1:2~2:3, the screw diameter of the auger part and the ratio of pitch For 8:5~9:4, the helical blade inclination angle of the auger part is 55~60 °.

4. the paint roller of the wooden toy as described in claim 1~2 any claim, it is characterised in that the spiral The helical blade of mixing component is provided with equally distributed passage.

5. the paint roller of wooden toy as claimed in claim 4, it is characterised in that the diameter of the passage and the spiral shell The diameter ratio for revolving mixing component is 1:45~1:40.

6. the paint roller of wooden toy as claimed in claim 5, it is characterised in that the centre-to-centre spacing of any adjacent passage Diameter ratio with passage is 4:3~9:5.

7. the paint roller of wooden toy as claimed in claim 1, it is characterised in that the hot air source is to enter installed in hot gas Mouthful electric hot-air baker, including the blower fan that thermoelectric heating device and the heat that produces thermoelectric heating device are sent into cylinder.