Spraying device for glass cover plate

Abstract

The invention discloses a glass cover plate spraying device which comprises a spraying box, a bearing table, a jig, a spraying gun, an upper air draft mechanism and a lower air draft mechanism, the bearing table is horizontally installed and fixed in the spraying box, the jig is horizontally installed on the bearing table, and a glass cover plate to be sprayed is placed on the top face of the jig. The spraying gun can spray printing ink to the to-be-sprayed surface of the glass cover plate from top to bottom, the upper air draft mechanism comprises an upper air draft pipe and a first induced draft fan, an air inlet of the upper air draft pipe is communicated with the interior of the spraying box and located above the to-be-sprayed glass cover plate, and the lower air draft mechanism comprises a lower air draft pipe and a second induced draft fan. A lower exhaust pipe is fixedly installed on the bearing table and located below the glass cover plate to be sprayed, an air inlet of the lower exhaust pipe is close to the peripheral edge of the glass cover plate to be sprayed, an air outlet of the lower exhaust pipe penetrates through the box body of the spraying box to be communicated with a second induced draft fan, and the lower exhaust pipe can effectively absorb printing ink falling below the glass cover plate; and the water is prevented from rebounding and splashing to the lower surface of the glass cover plate.

Description

Technical Field

[0001] The invention relates to the field of spraying technology, and in particular to a spraying device for a glass cover plate. Background Art

[0002] During the production process of glass cover plates, protective ink is sprayed on the surface of the glass cover plates to improve their resistance to ultraviolet light and other properties. During the spraying process, an exhaust mechanism is set above the glass cover plates to discharge excess ink that is not attached to the surface of the glass cover plates during spraying out of the spray box to avoid harm to the spraying operators. However, this type of exhaust method has the problem of ink bouncing off the bottom, resulting in poor surface oil on the back of the glass cover plates. Especially when the outer edges of the glass cover plates need to be sprayed, the rebounded ink is more likely to splash onto the back of the glass cover plates, reducing product yield and increasing production costs. Summary of the invention

[0003] In order to solve the technical problems existing in the background technology, the present invention provides a spraying device for a glass cover plate.

[0004] A spraying device for a glass cover plate comprises: a spraying box, a bearing platform, a fixture, a spray gun, an upper exhaust mechanism, and a lower exhaust mechanism. The bearing platform is horizontally installed and fixed in the spraying box, the fixture is horizontally installed on the bearing platform, the glass cover plate to be sprayed is placed on the top surface of the fixture, and the spray gun can spray ink from top to bottom onto the surface of the glass cover plate to be sprayed. The upper exhaust mechanism comprises an upper exhaust duct and a first induced draft fan. The air inlet of the upper exhaust duct is connected to the inside of the spraying box and is located above the glass cover plate to be sprayed. The air outlet of the upper exhaust duct passes through the box body of the spraying box and is connected to the first induced draft fan. The lower exhaust mechanism comprises a lower exhaust duct and a second induced draft fan. The lower exhaust duct is installed and fixed on the bearing platform and is located below the glass cover plate to be sprayed. The air inlet of the lower exhaust duct should be close to the edges of the glass cover plate to be sprayed, and the air outlet of the lower exhaust duct passes through the box body of the spraying box and is connected to the second induced draft fan.

[0005] Preferably, the lower exhaust duct includes a first duct and a second duct, the first duct is an annular duct arranged around the edges of the glass cover to be sprayed, and a plurality of branch air inlets connected to the interior of the annular duct are evenly spaced on the annular duct, one end of the second duct is connected to the interior of the annular duct, and the other end of the second duct passes through the box body of the spray box and is connected to the second induced draft fan.

[0006] Preferably, the branch air inlets are inclined holes facing the edges of the lower surface of the glass cover plate to be sprayed.

[0007] Preferably, the diameter of the branch air inlet is 10 mm.

[0008] Preferably, the first induced draft fan and the second induced draft fan are the same induced draft fan.

[0009] Preferably, a plurality of groups of supporting platforms, lower exhaust pipes and fixtures connected in sequence up and down are installed and fixed in the spray box.

[0010] Preferably, the top surface of the fixture is a contoured surface that can be bonded to the lower surface of the glass cover plate.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] The lower exhaust pipe located below the glass cover plate and close to the edges of the glass cover plate can effectively absorb the ink falling below the glass cover plate, prevent it from rebounding and splashing onto the lower surface of the glass cover plate, and improve the spraying yield of the glass cover plate.

[0013] The annular pipe arranged around the edges of the glass cover plate to be sprayed in the lower exhaust pipe can fully ensure that the ink below the edges of the glass cover plate is sucked away, thereby improving the working reliability of the spraying device for the glass cover plate.

[0014] The branch air inlets evenly spaced on the annular duct are designed as inclined holes facing the edges of the lower surface of the glass cover to be sprayed, which can more specifically absorb the ink that may rebound onto the lower surface of the glass cover, further improving the working reliability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The present invention is a schematic diagram of the overall structure of a spraying device for a glass cover plate.

[0016] Figure 2 For ease of observation, the overall structural diagram of the spraying device for the glass cover plate behind the spray box is hidden.

[0017] Figure 3 It is a structural schematic diagram of the supporting platform, fixture, and lower exhaust duct. DETAILED DESCRIPTION

[0018] The specific implementation of the present invention will be described in detail below with reference to the accompanying drawings.

[0019] Reference Figures 1 to 3The spraying device for glass cover plate comprises: a spraying box 1, a bearing platform 2, a fixture 3, a spray gun 4, an upper exhaust mechanism, and a lower exhaust mechanism. The bearing platform 2 is horizontally installed and fixed in the spraying box 1. The fixture 3 is horizontally installed on the bearing platform 2. The glass cover plate 5 to be sprayed is placed on the top surface of the fixture 3. The spray gun 4 can spray the ink from top to bottom onto the surface of the glass cover plate 5 to be sprayed. The upper exhaust mechanism comprises an upper exhaust pipe 6 and a first induced draft fan. The air inlet of the upper exhaust pipe 6 is connected to the spraying box 1. The interior is connected and is located above the glass cover plate 5 to be sprayed, the air outlet of the upper exhaust pipe 6 passes through the box body of the spray box 1 and is connected to the first induced draft fan, the lower exhaust mechanism includes a lower exhaust pipe 7 and a second induced draft fan, the lower exhaust pipe 7 is installed and fixed on the supporting platform 2 and is located below the glass cover plate 5 to be sprayed, the air inlet of the lower exhaust pipe 7 should be close to the edges of the glass cover plate 5 to be sprayed, and the air outlet of the lower exhaust pipe 7 passes through the box body of the spray box 1 and is connected to the second induced draft fan.

[0020] The working principle of the spraying device for the glass cover plate is as follows: when the spray gun 4 sprays ink toward the glass cover plate 5 below, most of the ink that is not adsorbed on the upper surface of the glass cover plate 5 will be sucked away by the upper exhaust pipe 6 and discharged from the spray box 1, and the remaining ink that falls below the edges of the glass cover plate 5 will be sucked away by the lower exhaust pipe 7 to prevent it from rebounding and splashing onto the lower surface of the glass cover plate 5, thereby ensuring the spraying yield of the glass cover plate 5.

[0021] Reference Figure 3 The lower exhaust pipe 7 includes a first pipe 71 and a second pipe 72. The first pipe 71 is an annular pipe arranged around the edges of the glass cover plate 5 to be sprayed. A plurality of branch air inlets 71a connected to the inside of the annular pipe are evenly spaced on the annular pipe. One end of the second pipe 72 is connected to the inside of the annular pipe, and the other end of the second pipe 72 passes through the box body of the spray box 1 and is connected to the second induced draft fan.

[0022] The annular pipeline can fully ensure that the ink below the edges of the glass cover plate 5 is drawn away, thereby improving the working reliability of the spraying device for the glass cover plate.

[0023] Reference Figure 1 , Figure 3 The branch air inlet 71a is an inclined hole facing the edges of the lower surface of the glass cover plate 5 to be sprayed, so as to more specifically absorb the ink that may rebound onto the lower surface of the glass cover plate 5, further improving the working reliability of the device.

[0024] In order to ensure that the branch air inlet 71a has sufficient negative pressure and taking into account the flow rate of ink entering the branch air inlet 71a, the diameter of the branch air inlet 71a is 10 mm.

[0025] In order to save the device investment cost and improve the compactness of the device structure, the first induced draft fan and the second induced draft fan are the same induced draft fan.

[0026] A plurality of groups of supporting platforms 2, lower exhaust pipes 7 and fixtures 3 connected in sequence up and down are fixedly installed in the spray box 1. Multiple glass cover plates 5 to be sprayed can be placed in the spray box 1 to improve the spraying efficiency.

[0027] The top surface 31 of the jig is a contoured surface that can be bonded to the lower surface of the glass cover plate 5, thereby effectively protecting the edges of the lower surface of the glass cover plate 5 from being exposed to the ink diffused in the spray box 1, further ensuring that the ink will not rebound to the lower surface of the glass cover plate 5, and improving the spraying yield rate.

[0028] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A spraying device for a glass cover plate, characterized in that: The invention comprises: a spray box (1), a supporting platform (2), a fixture (3), a spray gun (4), an upper exhaust mechanism, and a lower exhaust mechanism. The supporting platform (2) is horizontally installed and fixed in the spray box (1). The fixture (3) is horizontally installed on the supporting platform (2). The glass cover plate (5) to be sprayed is placed on the top surface of the fixture (3). The spray gun (4) can spray ink from top to bottom onto the surface of the glass cover plate (5) to be sprayed. The upper exhaust mechanism comprises an upper exhaust pipe (6) and a first induced draft fan. The air inlet of the upper exhaust pipe (6) is connected to the inside of the spray box (1). The lower exhaust mechanism comprises a lower exhaust pipe (7) and a second exhaust fan. The lower exhaust pipe (7) is installed and fixed on the supporting platform (2) and is located below the glass cover plate (5) to be sprayed. The air inlet of the lower exhaust pipe (7) should be close to the edges of the glass cover plate (5) to be sprayed. The air outlet of the lower exhaust pipe (7) passes through the body of the spray box (1) and is connected to the second exhaust fan.

2. The spraying device for glass cover according to claim 1, characterized in that: The lower exhaust pipe (7) comprises a first pipe (71) and a second pipe (72); the first pipe (71) is an annular pipe arranged around the edges of the glass cover plate (5) to be sprayed; a plurality of branch air inlets (71a) connected to the interior of the annular pipe are evenly spaced on the annular pipe; one end of the second pipe (72) is connected to the interior of the annular pipe; the other end of the second pipe (72) passes through the box body of the spray box (1) and is connected to the second induced draft fan.

3. The spraying device for glass cover according to claim 2, characterized in that: The branch air inlet (71a) is an inclined hole at the edges of the lower surface of the glass cover plate (5) to be sprayed.

4. The spraying device for a glass cover according to claim 2, characterized in that: The diameter of the branch air inlet (71a) is 10 mm.

5. The spraying device for a glass cover according to claim 1, characterized in that: The first induced draft fan and the second induced draft fan are the same induced draft fan.

6. The spray coating device for a glass cover according to claim 1, characterized in that: A plurality of groups of supporting platforms (2), lower exhaust pipes (7) and fixtures (3) which are connected in sequence up and down are fixedly installed in the spray box (1).

7. The spray coating device for a glass cover according to claim 1, characterized in that: The top surface (31) of the jig is a contoured surface that can be bonded to the lower surface of the glass cover plate (5).

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