Powder mixing machine for mixing laser welding powder

Abstract

The utility model discloses a powder mixer for mixing laser welding powder, which comprises a rack, a roller and a servo motor, and the welding powder to be mixed is arranged in the roller; a plurality of roll shafts are rotationally arranged at the top of the rack side by side; a plurality of cams are distributed on the roll shafts at intervals; curved surface limiters are arranged on the left and right sides of the top of the rack, end surface limiters are arranged on the front and rear sides of the top of the rack, and the curved surface limiters, the end surface limiters and the roller shafts jointly form slots for accommodating the rollers; the roll shafts are in power connection and are driven by the servo motor to rotate, the cams enable the roller to rotate irregularly, and welding powder is fully mixed. Welding powder mixing is achieved based on the cam, and the problem that materials are centrifugally layered due to rotational motion of a traditional powder mixing machine can be solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of laser welding, concretely relates to a powder mixing machine for laser welding powder mixing. BACKGROUND

[0002] Laser welding powder includes nickel base, cobalt base, iron base alloy, ceramic, tungsten carbide composite material etc., in laser welding, needs to mix these welding powder in advance. The current powder mixing mode mainly has two kinds, one is completed through manual, time -consuming and labor -intensive, another kind is to utilize powder mixing machine, but the existing powder mixing machine is mainly aimed at biomedical field, and when being used for laser welding powder mixing, the welding powder is centrifuged and layered due to too fast rotary motion, and it is more difficult to form effective mixing of metal powder. UTILITY MODEL CONTENT

[0003] The utility model aims at providing a powder mixing machine for laser welding powder mixing with good powder mixing effect.

[0004] TECHNICAL SCHEME: The utility model relates to a powder mixing machine for laser welding powder mixing, including frame, drum and servo motor, and the welding powder to be mixed is placed in the drum, a plurality of roller shafts are rotationally arranged on the top of the frame, a plurality of cams are distributed at intervals on the roller shaft, and the left and right sides of the top of the frame are provided with curved surface limit, and the front and back sides are provided with end surface limit, and the curved surface limit, the end surface limit and the plurality of roller shafts jointly constitute the groove position accommodating the drum, the roller shafts are power connected and driven to rotate by the servo motor, and the drum is irregularly rotated by the plurality of cams.

[0005] Further, the number of servo motors is two, and the roller shafts at intervals are taken as a group, and the two groups of roller shafts are driven by different servo motors.

[0006] Further, the output end of the servo motor and the roller shafts are power connected through the belt pulley and the belt.

[0007] Further, the roller shafts are installed on the frame through a pair of bearings.

[0008] Further, the servo motor is fixed on the frame.

[0009] Further, the cams are rotationally connected with the roller shafts and are fastened by screws, and the cams on the roller shafts can have different angles according to the needs. The cam angles on the same shaft are arranged at different times, so that the front and back shaking of the drum can be realized.

[0010] Further, the powder mixing machine for laser welding powder mixing further includes a PLC control system for controlling the powder mixing time and the rotating speed of the servo motor.

[0011] Beneficial effects: compared with the prior art, the utility model has the following advantages: the utility model provides a powder mixing machine based on cam, can make the welding powder fully mix, avoid the problem that the material is centrifugally layered due to the rotary motion of the traditional powder mixing machine, provide support for laser welding processing. In addition, it also has the characteristics of low cost and convenient operation. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 is a structural schematic diagram of the powder mixing machine for laser welding powder mixing provided by the utility model embodiment;

[0013] Figure 2 is Figure 1 the structural schematic diagram after the rack is hidden;

[0014] Figure 3 is the powder mixing method flow chart of the powder mixing machine in the utility model embodiment. DETAILED DESCRIPTION

[0015] The utility model will be further described below in combination with the drawings.

[0016] attached Figures 1 to 3 in the drawings are as follows:

[0017] 1, rack; 2, curved surface limit; 3, end surface limit; 4, roller shaft; 5, bearing; 6, cam; 7, servo motor; 8, pulley; 9, belt.

[0018] As Figure 1 and Figure 2 shown, the utility model embodiment provides a powder mixing machine for laser welding powder mixing, including rack 1, drum, servo motor 7 and PLC control system, wherein the number of servo motor 7 is two, and is fixed at the bottom of rack 1 two sides respectively.

[0019] Four roller shafts 4 are provided side by side on the top of rack 1, and the two ends of roller shaft 4 are connected with rack 1 through bearing 5, and a plurality of cams 6 are distributed on roller shaft 4 at intervals. In the embodiment, the cam 6 is rotatably connected between the roller shaft 4 and is fastened by screw, and the cam 6 on each roller shaft 4 can have different angles according to the needs. The function of cam 6 is to lift the drum, so that the drum rotates irregularly, and shakes the welding powder to be mixed in the drum.

[0020] The roller shaft 4 is a group at intervals, and the two groups of roller shafts 4 are driven by different servo motors 7. Specifically, the end of the same group of roller shafts 4 is provided with a pulley 8, and the output end of the servo motor 7 is also provided with a pulley 8, and the pulleys 8 are connected by a belt 9. When the servo motor 7 rotates, it can drive the same group of roller shafts 4 to rotate synchronously.

[0021] The left and right sides of the top of the rack 1 are provided with curved surface limiters 2, and the front and back sides are provided with end surface limiters 3, the curved surface limiters 2, the end surface limiters 3 and a plurality of roller shafts 4 jointly form a groove position for accommodating the roller, and the groove position is suitable for rollers of different sizes and types. The curved surface limiters 2 are in flexible contact with the roller, and protect the roller in the rolling direction to prevent the roller from falling out. The end surface limiters 3 protect the roller in the front-back direction to prevent the roller from falling out.

[0022] The PLC control system is used for controlling the mixing time and the rotating speed of the servo motor 7, and the PLC control system can realize multi-gear speed adjustment of the servo motor 7.

[0023] As shown in Figure 3 The utility model embodiment further provides a mixing method of the mixing machine for laser welding powder mixing, and the mixing method comprises the following steps:

[0024] (1) The welding powder to be mixed is loaded into the roller.

[0025] (2) According to the mixing degree required, it is evaluated whether the mixing powder needs to be shaken left and right or needs to be shaken left and right and front and back, if the mixing powder needs to be shaken left and right and front and back, the cam 6 on each roller shaft 4 is adjusted to different angles, and if the mixing powder does not need to be shaken front and back, this step is skipped.

[0026] (3) The mixing time and the rotating speed of the servo motor 7 are adjusted in the PLC control system.

[0027] (4) The servo motor 7 works to drive the roller shaft 4 to rotate, and in the rotating process, each cam 6 lifts the roller to realize the mixing of the powder.

[0028] (5) The mixing of the powder is completed, the roller is unloaded, and the mixing of the powder is checked, if the powder meets the requirements, the powder is stored, and if the powder does not meet the requirements, steps (2) to (5) are repeated.

Claims

1. A powder mixing machine for laser welding powder mixing, characterized by, It includes a frame (1), a roller and a servo motor (7), the welding powder to be mixed is placed in the roller; a plurality of roller shafts (4) are arranged side by side on the top of the frame (1) and rotate, a plurality of cams (6) are distributed on the roller shafts (4) at intervals; the left and right sides of the top of the frame (1) are provided with curved surface limiters (2), and the front and rear sides are provided with end surface limiters (3), the curved surface limiters (2), the end surface limiters (3) and the plurality of roller shafts (4) jointly constitute a groove position accommodating the roller; the roller shafts (4) are power-connected between the roller shafts (4) and are driven to rotate by the servo motor (7), and each cam (6) makes the roller irregularly rotate.

2. The powder mixer for laser welding powder mixing according to claim 1, wherein, The number of servo motors (7) is two, and the roller shafts (4) at intervals are taken as a group, and the two groups of roller shafts (4) are driven by different servo motors (7).

3. The powder mixer for laser welding powder mixing according to claim 1, wherein, The output end of the servo motor (7) and the roller shaft (4) are power-connected through a belt pulley (8) and a belt (9).

4. The powder mixer for laser welding powder mixture according to claim 1, wherein, The roller shaft (4) is installed on the frame (1) through a pair of bearings (5).

5. The powder mixer for laser welding powder mixture according to claim 1, wherein, The servo motor (7) is fixed on the frame (1).

6. The powder mixer for laser welding powder mixture according to claim 1, wherein The cam (6) is rotatably connected with the roller shaft (4) and is fastened by a screw, and the cams (6) on each roller shaft (4) can have different angles according to the needs.

7. The powder mixer for laser welding powder mixture according to claim 1, wherein It also includes a PLC control system for controlling the mixing time and the rotating speed of the servo motor (7).

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