Numerically-controlled machine tool for polishing composite wood base plate mother board

Abstract

The utility model discloses a numerical control machine tool for polishing a composite wood base plate mother board, which relates to a polishing device and comprises an upper machine base, a lower machine base, a hydraulic cylinder, a conveyor belt, a positioning guide roller and a polishing roller, the device further comprises a dust hood and an air blowing pipe. The dust suction cover is installed on the upper machine base, the positioning guide roller and the grinding roller are both located in the dust suction cover, an air blowing pipe is arranged on one side of the grinding roller, the air blowing pipe is rotatably installed in the upper machine base, an air inlet pipe communicated with the interior of the air blowing pipe is installed at one end of the air blowing pipe, and a driver is installed at the other end of the air blowing pipe. A plurality of grid air holes are formed in the air blowing pipe, and the grid air holes are arranged in a surrounding mode from one end of the air blowing pipe to the other end of the air blowing pipe in the circumferential direction. The dust removal device has a good dust removal effect, can effectively ensure the cleanness of the grinding roller, and prevents the problem that the grinding effect is influenced by the accumulation of dust particles.

Description

Technical Field

[0001] The utility model relates to a grinding device, and more particularly to a numerical control machine tool for grinding composite wood backing plate motherboards. Background Art

[0002] Composite wood backing is a type of man-made board. Unlike laminated wood boards, composite wood backing is primarily made by pressing sawdust or sawdust. A coating is then applied to its surface to create a smooth surface, ensuring it can support PCBs in PCB manufacturing. Before coating, the composite wood backing requires a polishing process to smoothen the surface and facilitate coating adhesion. Currently, polishing of motherboards is primarily performed using CNC machine tools, which automatically identify the motherboard's position and perform automated polishing. Specifically, when the CNC machine detects the motherboard entering the machine, a hydraulic cylinder drives the positioning guide roller and the polishing roller downward. The positioning guide roller compresses and assists in conveying the motherboard, forcing it to pass beneath the polishing roller, achieving automated polishing of the surface. Because motherboard polishing is a fine process, the sandpaper on the grinding rollers is of a higher grit, resulting in smaller particles. This makes it more likely for particles to adhere to the sandpaper, thus affecting the polishing effect. To solve this problem, the current practice is to stop the grinding roller after a period of use and use a manual spray gun to blow air to remove dust from the grinding roller to prevent the accumulation of particulate dust. However, this dust removal method is not very effective and is time-consuming. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a numerical control machine tool for grinding composite wood backing plate motherboards in view of the deficiencies of the existing technology, thereby improving the dust removal effect of the grinding roller.

[0004] The utility model describes a CNC machine tool for grinding composite wood pad motherboards, comprising an upper machine base, a lower machine base, a hydraulic cylinder, a conveyor belt, a positioning guide roller and a grinding roller; it also includes a dust hood and an air blow pipe; the dust hood is installed on the upper machine base, and the positioning guide roller and the grinding roller are both located in the dust hood, an air blow pipe is provided on one side of the grinding roller, the air blow pipe is rotatably installed in the upper machine base, an air inlet pipe connected to the interior of the air blow pipe is installed at one end of the air blow pipe, a driver is installed at the other end of the air blow pipe, a plurality of grid air holes are opened on the air blow pipe, and the grid air holes are circumferentially arranged from one end of the air blow pipe to the other end.

[0005] As a further improvement, an air guide hood wrapping the air blow pipe is provided on the outside of the air blow pipe, the air guide hood is coaxially arranged with the air blow pipe, and the air guide hood is in sliding contact with the air blow pipe; both ends of the air guide hood are fixed on the upper machine base, and a fan-shaped opening is provided on the air guide hood, and the fan-shaped opening faces the grinding roller.

[0006] Furthermore, the length of the fan-shaped opening is greater than or equal to the length of the grinding roller.

[0007] Furthermore, the opening width of the fan-shaped opening is less than 1 / 4 of the circumference of the air guide cover and is greater than the minimum spacing between two adjacent grid air holes.

[0008] As a further improvement, the air blowing pipe is located on the descending side of the grinding roller's rotation direction.

[0009] As a further improvement, a rotary joint is installed at the end of the air inlet pipe, and the rotary joint is connected to the external air source pipeline through a hose.

[0010] Beneficial effects

[0011] The advantages of the utility model are that a rotatable air blowing pipe is provided on one side of the grinding roller, and grid air holes are provided on the air blowing pipe, so that when the air blowing pipe rotates, high-pressure gas can be blown onto the grinding roller through the grid air holes, and since the grid air holes extend from one end of the air blowing pipe to the other end and are arranged around the air blowing pipe, the blown gas will not be concentrated in a certain position, but will change continuously, forming a purge-type dust removal for the grinding roller, and the dust removal effect is better than the traditional air nozzle jet dust removal. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the internal structure of the CNC machine tool of the present utility model;

[0013] Figure 2 for Figure 1 Schematic diagram of the enlarged structure at A in the middle;

[0014] Figure 3 This is a schematic diagram of the installation structure of the air blowing pipe of the present utility model;

[0015] Figure 4 This is a schematic diagram of the expanded structure of the air blowing pipe of the present utility model.

[0016] Among them: 1-upper machine base, 2-lower machine base, 3-conveyor belt, 4-grinding roller, 5-positioning guide roller, 6-dust hood, 7-air blowing pipe, 8-air inlet pipe, 9-air guide hood, 10-fan-shaped opening, 11-grid air hole, 12-drive, 13-rotary joint, 14-hose. DETAILED DESCRIPTION

[0017] The present invention will be further described below in conjunction with the embodiments, but this does not constitute any limitation to the present invention. Any limited modifications made by anyone within the scope of the claims of the present invention are still within the scope of the claims of the present invention.

[0018] See Figures 1-4The present invention discloses a CNC machine tool for grinding composite wood backing board motherboards, comprising an upper machine base 1, a lower machine base 2, a hydraulic cylinder, a conveyor belt 3, positioning guide rollers 5, a grinding roller 4, a dust hood 6, and an air blower 7. The dust hood 6 is mounted on the upper machine base 1, and the positioning guide rollers 5 and the grinding roller 4 are both located within the dust hood 6. A conveying pipe is mounted above the dust hood 6, and a dust suction fan is installed within the conveying pipe to remove dust particles generated during grinding. A blow pipe 7 is provided on one side of the grinding roller 4. The blow pipe 7 is rotatably mounted in the upper machine base 1. An air inlet pipe 8 communicating with the interior of the blow pipe 7 is installed at one end of the blow pipe 7. A rotary joint 13 is installed at the end of the air inlet pipe 8. The rotary joint 13 is connected to the external air source pipeline through a hose 14. A driver 12 is installed at the other end of the blow pipe 7. A plurality of grid air holes 11 are provided on the blow pipe 7. The grid air holes 11 are circumferentially arranged from one end of the blow pipe 7 to the other end. This arrangement allows high-pressure gas to be blown out through the grid air holes 11 and onto the grinding roller 4 when the blow pipe 7 rotates. Moreover, since the grid air holes 11 extend from one end of the blow pipe 7 to the other end and are arranged around the blow pipe 7, the blown gas will not be concentrated in a certain position, but will change continuously, forming a purge-type dust removal for the grinding roller 4. Compared with the traditional air nozzle spray dust removal, its dust removal effect is better.

[0019] To reduce gas waste, an air shroud 9 is provided on the outside of the air duct 7 of this embodiment, encasing the air duct 7. The air shroud 9 is coaxially arranged with the air duct 7 and in sliding contact with the air duct 7. Both ends of the air shroud 9 are fixed to the upper machine base 1. A fan-shaped opening 10 is formed in the air shroud 9, and the fan-shaped opening 10 faces the grinding roller 4. This arrangement ensures that gas can only be blown out from the grid air holes 11 at the location of the fan-shaped opening 10 and blown directly toward the grinding roller 4. The grid air holes 11 located elsewhere are blocked by the air shroud 9, thereby greatly reducing gas waste.

[0020] Preferably, the length of the fan-shaped opening 10 is greater than or equal to the length of the grinding roller 4 to avoid the problem of dust removal blind spots. In addition, the opening width of the fan-shaped opening 10 is less than 1 / 4 of the circumference of the air guide hood 9 and greater than the minimum spacing between two adjacent grid air holes 11, so that the blown air can be effectively blown to the grinding roller 4, thereby reducing gas waste.

[0021] Preferably, the air blowing pipe 7 is located on the descending side of the rotation direction of the grinding roller 4. Figure 1 As shown in the following example, it is assumed that the motherboard Figure 1 In the transmission from left to right, the rotation direction of the grinding roller 4 is clockwise, and the air blowing pipe 7 is arranged on the right side of the grinding roller 4. Such an arrangement can improve the impact effect between the gas and the grinding roller 4, thereby improving the dust removal effect.

[0022] The operating principle of the present invention is as follows: When a CNC machine tool is grinding a motherboard, a driver 12 rotates the air blow pipe 7, and an external air source provides high-pressure gas to the air blow pipe 7, causing the gas to be blown out from the grid air holes 11 corresponding to the fan-shaped openings 10 and blown toward the grinding roller 4, thereby removing dust particles on the grinding roller 4. Dust particles floating in the dust hood 6 are then sucked from the dust hood 6 into the conveying pipe by the dust suction fan, thereby removing the dust particles floating in the dust hood 6. The CNC machine tool of the present invention, through its improved grinding roller dust removal system, can effectively ensure the cleanliness of the grinding roller 4, preventing the accumulation of dust particles from affecting the grinding effect.

[0023] The above is only a preferred embodiment of the present invention. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the structure of the present invention. These modifications and improvements will not affect the effect of the implementation of the present invention and the practicality of the patent.

Claims

1. A CNC machine tool for grinding composite wood backing board motherboard, comprising an upper machine base (1), a lower machine base (2), a conveyor belt (3), a hydraulic cylinder, a positioning guide roller (5) and a grinding roller (4); characterized in that, The utility model also includes a dust hood (6) and an air blowing pipe (7); the dust hood (6) is installed on the upper machine base (1), and the positioning guide roller (5) and the grinding roller (4) are both located in the dust hood (6); a blow pipe (7) is provided on one side of the grinding roller (4); the blow pipe (7) is rotatably installed in the upper machine base (1); an air inlet pipe (8) connected to the interior of the blow pipe (7) is installed at one end of the blow pipe (7); a driver (12) is installed at the other end of the blow pipe (7); a plurality of grid air holes (11) are provided on the blow pipe (7), and the grid air holes (11) are circumferentially arranged from one end of the blow pipe (7) to the other end thereof.

2. A CNC machine tool for grinding composite wood backing board motherboard according to claim 1, characterized in that: An air guide hood (9) is provided on the outside of the air blowing pipe (7) and wraps around the air blowing pipe (7). The air guide hood (9) and the air blowing pipe (7) are coaxially arranged, and the air guide hood (9) and the air blowing pipe (7) are in sliding contact. Both ends of the air guide hood (9) are fixed on the upper machine base (1). A fan-shaped opening (10) is provided on the air guide hood (9), and the fan-shaped opening (10) faces the grinding roller (4).

3. A CNC machine tool for grinding composite wood backing board motherboard according to claim 2, characterized in that: The length of the fan-shaped opening (10) is greater than or equal to the length of the grinding roller (4).

4. A CNC machine tool for grinding composite wood backing board motherboard according to claim 2, characterized in that: The opening width of the fan-shaped opening (10) is less than 1 / 4 of the circumference of the air guide cover (9), and is greater than the minimum distance between two adjacent grid air holes (11).

5. A CNC machine tool for grinding composite wood backing board motherboard according to any one of claims 1 to 4, characterized in that: The air blowing pipe (7) is located on the descending side of the rotation direction of the grinding roller (4).

6. The CNC machine tool for grinding composite wood backing board motherboard according to claim 1, characterized in that: A rotary joint (13) is installed at the end of the air inlet pipe (8), and the rotary joint (13) is connected to an external air source pipeline through a hose (14).

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