Thermal spray masking device

Abstract

The utility model discloses a thermal spraying shielding device relates to spraying processing technical field, including the fixing frame, is equipped with the workbench on the fixing frame, and the fixed ring fixed connection is in the workbench upper end, and the upper end articulation of fixed ring has a plurality of first baffle, and the first baffle upper end fixed connection has the second baffle, and the first baffle outside slide connection has the limit ring, and the limit ring screw thread connection has a plurality of fixed bolts, and a plurality of fixed bolts along the limit ring circumferential distribution, and the fixed bolt is with first baffle screw thread connection. Advantageous effect lies in: rotating the first baffle drives the upper end of second baffle and abuts, then pull up the limit ring, thereby limiting a plurality of first baffle, shielding the powder particle that bounces back when spraying through the first baffle, when spraying the special-shaped part, the powder particle will bounce back upwards, thereby shielding the powder particle that bounces back upwards through the second baffle, avoid the powder particle pollution non -spraying area.

Description

Technical Field

[0001] This utility model relates to the field of spray coating technology, and in particular to a thermal spray masking device. Background Technology

[0002] Thermal spraying first requires roughening the surface of the workpiece before spraying. Thermal spraying masking is the process of creating a precise spatial selective barrier to prevent powder particles from rebounding and contaminating non-sprayed areas.

[0003] A search revealed Chinese Patent Publication No. CN221268634U, which discloses an adjustable masking device for thermal spraying. This patent uses a sliding masking plate and a fixed masking plate that work together to mask the workpiece during thermal spraying. A clamping assembly effectively clamps the workpiece, preventing masking failure during spraying and improving masking efficiency and effectiveness. However, this device has a problem: when spraying irregularly shaped parts, powder particles may bounce upwards. The sliding and fixed masking plates form a cylindrical shape, failing to mask the top of the workpiece, causing powder particles to contaminate non-sprayed areas. Utility Model Content

[0004] The purpose of this invention is to provide a thermal spraying masking device to solve the above-mentioned problems.

[0005] This utility model achieves the above objectives through the following technical solutions:

[0006] A thermal spraying masking device includes a fixed frame, a worktable on the fixed frame, a moving mechanism between the worktable and the fixed frame, and a masking mechanism on the worktable.

[0007] The shielding mechanism includes a fixed ring, which is fixedly connected to the upper end of the worktable. Multiple first baffles are hinged to the upper end of the fixed ring. The multiple first baffles are evenly distributed around the circumference of the fixed ring to form a cylindrical tube coaxial with the fixed ring. Second baffles are fixedly connected to the upper end of the first baffles. The multiple second baffles are arranged in a funnel shape with the opening facing downwards. A limit ring is slidably connected to the outside of the first baffles. Multiple fixing bolts are threadedly connected to the limit ring. The multiple fixing bolts are evenly distributed around the circumference of the limit ring. The fixing bolts are threadedly connected to the first baffles.

[0008] Preferably, the fixed frame is rotatably connected with symmetrically arranged movable lead screws, and the movable lead screws are threadedly connected with movable blocks. The side of the movable block closest to the fixed ring is slidably connected to the worktable.

[0009] Preferably, a power motor is fixedly connected to one side of the fixed frame, the output shaft of the power motor is fixedly connected to the moving lead screw, and a lifting mechanism is provided below the moving block.

[0010] Preferably, the lifting mechanism includes a connecting frame, which is U-shaped with the opening facing upward. The connecting frame is fixedly connected to the lower end of the moving block, and the connecting frame is slidably connected to sliding blocks that are symmetrically arranged front and rear.

[0011] Preferably, a bidirectional lead screw is rotatably connected inside the connecting frame, the bidirectional lead screw is threadedly connected to the sliding block, and a drive motor is fixedly installed at the front end of the connecting frame, with the output shaft of the drive motor fixedly connected to the bidirectional lead screw.

[0012] Preferably, the lower end of the worktable is fixedly connected with symmetrical mounting blocks, and a connecting rod is rotatably connected between the mounting blocks and the sliding block.

[0013] Preferably, two guide rods are fixedly connected to the side of the moving block near the fixed ring, and the guide rods are slidably connected to the worktable.

[0014] The beneficial effects are as follows: rotating the first baffle causes the upper ends of multiple second baffles to abut against each other, then the limiting ring is pulled upward, and the fixing bolt is rotated to connect with the threaded first baffle, thereby limiting the multiple first baffles. The first baffles shield the powder particles that bounce back during spraying. When spraying irregularly shaped parts, the powder particles will bounce upward, and the second baffles shield the upward-bounced powder particles, thus preventing powder particles from contaminating non-spraying areas.

[0015] The additional technical features and advantages of this utility model will become more apparent from the following description, or may be learned through specific practice of this utility model. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the following detailed description to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0017] Figure 1 This is a perspective view of a thermal spraying masking device according to the present invention;

[0018] Figure 2 yes Figure 1 Enlarged view of point A;

[0019] Figure 3 This is a front view of a thermal spraying masking device according to the present invention;

[0020] Figure 4 This is a right view of the thermal spraying masking device described in this utility model;

[0021] Figure 5 This is a top view of a thermal spraying masking device according to the present invention.

[0022] The reference numerals in the attached drawings are explained as follows: 101, fixed frame; 102, worktable; 201, moving lead screw; 202, moving block; 203, power motor; 301, connecting frame; 302, sliding block; 401, fixing ring; 402, first baffle; 403, second baffle; 404, limiting ring; 405, fixing bolt; 501, transmission motor; 502, double-acting lead screw; 601, mounting block; 602, connecting rod; 7, guide rod. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0025] The present invention will be further described below with reference to the accompanying drawings:

[0026] like Figures 1-5 As shown, a thermal spraying masking device includes a fixed frame 101, a worktable 102 on the fixed frame 101, a moving mechanism between the worktable 102 and the fixed frame 101, and a masking mechanism on the worktable 102.

[0027] The shielding mechanism includes a fixed ring 401, which is fixedly connected to the upper end of the workbench 102. Multiple first baffles 402 are hinged to the upper end of the fixed ring 401, forming a cylindrical shape coaxial with the fixed ring 401. Second baffles 403 are fixedly connected to the upper ends of the first baffles 402, forming a funnel shape with the opening facing downwards. A limiting ring 404 is slidably connected to the outer side of the first baffles 402, and multiple fixing bolts 405 are threadedly connected to the limiting ring 404. The fixing bolts 405 are evenly distributed circumferentially around the limiting ring 404 and threadedly connected to the first baffles 402. During use, rotating the fixing bolts 405 disengages them from the first baffles 402, subsequently causing the limiting ring 404 to slide against the first baffles 402. The limiting ring 404 is brought into contact with the worktable 102. Then, the first baffle 402 is rotated to open outwards. The workpiece to be sprayed is then placed on the worktable 102. The first baffle 402 is rotated again to bring the upper ends of the multiple second baffles 403 into contact. The limiting ring 404 is then pulled upwards, and the fixing bolt 405 is rotated to connect the fixing bolt 405 to the first baffle 402. Thus, the limiting ring 404 limits the multiple first baffles 402. During high-pressure spraying, the powder particles will bounce outwards. The first baffle 402 will then shield the bounced powder particles. When spraying irregularly shaped parts, the powder particles will bounce upwards. The second baffle 403 will then shield the upward-bounced powder particles, preventing powder particles from contaminating non-spraying areas.

[0028] The fixed frame 101 is rotatably connected to a symmetrically arranged sliding lead screw 201. The sliding lead screw 201 is threadedly connected to a sliding block 202. The side of the sliding block 202 near the fixed ring 401 is slidably connected to the worktable 102.

[0029] A power motor 203 is fixedly connected to one side of the fixed frame 101. The output shaft of the power motor 203 is fixedly connected to the moving lead screw 201. A lifting mechanism is provided below the moving block 202.

[0030] The lifting mechanism includes a connecting frame 301, which is U-shaped with its opening facing upward. The connecting frame 301 is fixedly connected to the lower end of the moving block 202. The connecting frame 301 is slidably connected to the front and rear symmetrical sliding blocks 302. The power motor 203 drives the moving screw 201 to rotate. The moving screw 201 is threadedly engaged with the moving block 202, thereby driving the connecting frame 301 to move through the moving block 202, which in turn causes the worktable 102 to move the workpiece.

[0031] A bidirectional lead screw 502 is rotatably connected inside the connecting frame 301. The bidirectional lead screw 502 is threadedly connected to the sliding block 302. A drive motor 501 is fixedly installed at the front end of the connecting frame 301. The output shaft of the drive motor 501 is fixedly connected to the bidirectional lead screw 502.

[0032] The lower end of the worktable 102 is fixedly connected to a symmetrical mounting block 601. A connecting rod 602 is rotatably connected between the mounting block 601 and the sliding block 302. The drive motor 501 drives the bidirectional lead screw 502 to rotate. The bidirectional lead screw 502 drives the symmetrical sliding blocks 302 to move towards each other, thereby causing the connecting rod 602 to rotate, so that the worktable 102 can lift and lower the workpiece.

[0033] Two guide rods 7 are fixedly connected to the side of the movable block 202 near the fixed ring 401, and the guide rods 7 are slidably connected to the worktable 102.

[0034] Working principle: During use, the workpiece to be sprayed is placed on the worktable 102. The power motor 203 drives the moving lead screw 201 to rotate. The moving lead screw 201 is threadedly engaged with the moving block 202, thereby driving the connecting frame 301 to move through the moving block 202. This causes the worktable 102 to move along with the workpiece. The transmission motor 501 drives the bidirectional lead screw 502 to rotate, which in turn drives the symmetrical sliding blocks 302 to move in opposite directions, thereby causing the connecting rod 602 to rotate. This allows the worktable 102 to lift and lower the workpiece to a suitable height. Then, the first baffle 402 is rotated to... The upper ends of multiple second baffles 403 abut against each other, and then the limiting ring 404 is pulled upward. The fixing bolt 405 is rotated to make the fixing bolt 405 threadedly connected to the first baffle 402, thereby limiting the multiple first baffles 402 through the limiting ring 404. During high-pressure spraying, the powder particles will bounce around, and the first baffles 402 will cover the powder particles that bounce back during spraying. When spraying irregular parts, the powder particles will bounce upward, and the second baffles 403 will cover the powder particles that bounce upward, thus preventing the powder particles from contaminating the non-spraying area.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A thermal spraying masking device, comprising a fixing frame (101), wherein a worktable (102) is provided on the fixing frame (101), characterized in that: A moving mechanism is provided between the workbench (102) and the fixed frame (101), and a shielding mechanism is provided on the workbench (102); The shielding mechanism includes a fixing ring (401) fixedly connected to the upper end of the workbench (102). A plurality of first baffles (402) are hinged to the upper end of the fixing ring (401). The plurality of first baffles (402) are evenly distributed around the circumference of the fixing ring (401) to form a cylindrical tube coaxial with the fixing ring (401). A second baffle (403) is fixedly connected to the upper end of the first baffle (402). The plurality of second baffles (403) are arranged in a funnel shape with the opening facing downward. A limiting ring (404) is slidably connected to the outer side of the first baffle (402). A plurality of fixing bolts (405) are threadedly connected to the limiting ring (404). The plurality of fixing bolts (405) are evenly distributed around the circumference of the limiting ring (404). The fixing bolts (405) are threadedly connected to the first baffle (402).

2. The thermal spraying masking device according to claim 1, characterized in that: The fixed frame (101) is rotatably connected to a symmetrically arranged movable lead screw (201), and the movable lead screw (201) is threadedly connected to a movable block (202). The movable block (202) is slidably connected to the worktable (102) on the side near the fixed ring (401).

3. A thermal spraying masking device according to claim 2, characterized in that: A power motor (203) is fixedly connected to one side of the fixed frame (101), and the output shaft of the power motor (203) is fixedly connected to the moving lead screw (201). A lifting mechanism is provided below the moving block (202).

4. A thermal spraying masking device according to claim 3, characterized in that: The lifting mechanism includes a connecting frame (301), which is U-shaped with an upward opening. The connecting frame (301) is fixedly connected to the lower end of the moving block (202), and the connecting frame (301) is slidably connected to sliding blocks (302) that are symmetrically arranged front and rear.

5. A thermal spraying masking device according to claim 4, characterized in that: A bidirectional lead screw (502) is rotatably connected inside the connecting frame (301). The bidirectional lead screw (502) is threadedly connected to the sliding block (302). A drive motor (501) is fixedly installed at the front end of the connecting frame (301). The output shaft of the drive motor (501) is fixedly connected to the bidirectional lead screw (502).

6. A thermal spraying masking device according to claim 5, characterized in that: The lower end of the workbench (102) is fixedly connected to a mounting block (601) that is symmetrical in front and behind, and a connecting rod (602) is rotatably connected between the mounting block (601) and the sliding block (302).

7. A thermal spraying masking device according to claim 6, characterized in that: The movable block (202) has two guide rods (7) fixedly connected to the side near the fixed ring (401), and the guide rods (7) are slidably connected to the worktable (102).

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