Water injection mechanism for washing machine test

Abstract

The utility model discloses a water injection mechanism for washing machine testing, which comprises a water injection pipe and a water pump connected with the water injection pipe, the water injection pipe is connected with a linear driving unit, the linear driving unit comprises a supporting frame fixedly connected with the water injection pipe, a sliding platform fixedly connected with the supporting frame and a guide rail movably matched with the sliding platform, and the guide rail is fixed on a workbench. A power unit for driving the sliding platform to linearly move along the guide rails is arranged between the workbench and the sliding platform; a pneumatic valve is mounted on the water injection pipe. Driven by the power unit, the sliding platform moves forwards along the guide rail, the front end of the water injection pipe is inserted into a water inlet of the washing machine, and water is injected into the washing machine. And after completion, the sliding platform and the water injection pipe on the sliding platform retreat and reset. The linear driving unit is adopted to drive the water injection pipe to be inserted into the water inlet of the washing machine and separated from the washing machine, the pneumatic valve is adopted to control opening and closing of the water injection pipe, and compared with the prior art, the design facilitates improvement of the working efficiency.

Description

Technical Field

[0001] The utility model relates to the field of household electrical appliance production and testing, in particular to testing equipment for washing machines. Background Art

[0002] The washing machines that have been produced and assembled need to be tested by water injection. To inject water into the washing machine, a water pump and a water injection pipe connected to the water pump are required, and a valve is provided on the water injection pipe. The worker connects the water injection pipe to the water inlet of the washing machine and opens the valve. Under the action of the water pump, water is injected into the washing machine and the washing machine is tested. When water injection is not needed, the worker disconnects the water injection pipe from the water inlet of the washing machine. Since the washing machines are tested in batches, the workers need to constantly disconnect the water injection pipe from one washing machine and then connect it to the next washing machine. The valve needs to be closed in the middle, and the valve needs to be opened after the water injection pipe is connected to the washing machine. In this way, the work efficiency is not high. Utility Model Content

[0003] The technical problem solved by the utility model is that when testing batches of washing machines, workers need to constantly disconnect the water injection pipe from one washing machine and then connect it to the next washing machine. In the middle, the valve needs to be closed and the valve needs to be opened after the water injection pipe is connected to the washing machine. In this way, the work efficiency is not high.

[0004] In order to solve the above technical problems, the utility model provides the following technical solutions: a water injection mechanism for testing a washing machine, comprising a water injection pipe and a water pump connected to the water injection pipe, the water injection pipe is connected to a linear drive unit, the linear drive unit comprises a support frame fixedly connected to the water injection pipe, a sliding platform fixedly connected to the support frame, and a guide rail movably cooperated with the sliding platform, the guide rail is fixed on a workbench, and a power unit for driving the sliding platform to linearly move along the guide rail is provided between the workbench and the sliding platform; a pneumatic valve is installed on the water injection pipe.

[0005] The washing machine to be tested is conveyed forward on the conveyor line. The water injection mechanism of the utility model is arranged beside the conveyor line. When the washing machine needs to be tested, the conveyor line is suspended. Driven by the power unit, the sliding platform moves forward along the guide rail, and the water injection pipe moves forward accordingly. The front end of the water injection pipe is plugged into the water inlet of the washing machine. After that, the pneumatic valve is opened, the water pump is started, and water is injected into the washing machine. After the water injection is completed, the water pump is stopped, the pneumatic valve is closed, and driven by the power unit, the sliding platform and the water injection pipe thereon retreat, and the water injection pipe is separated from the washing machine.

[0006] The utility model adopts a linear drive unit to drive the water injection pipe to be plugged into the water inlet of the washing machine, and adopts a pneumatic valve to control the opening and closing of the water injection pipe when the water injection pipe is disconnected from the washing machine. Compared with the prior art, the utility model is conducive to improving work efficiency.

[0007] The support frame includes a pair of T-shaped brackets fixedly connected to the sliding platform, a support plate located between the pair of T-shaped brackets, a water injection pipe installed on the support plate, and the support plate is connected to the T-shaped bracket through a first L-shaped connector and a second L-shaped connector. The first L-shaped connector is located at the front of the support plate, and the second L-shaped connector is located at the rear of the support plate. The first L-shaped connector is provided with an arc groove, and the second L-shaped connector is provided with a straight groove. The T-shaped bracket adopts a profile. The first L-shaped connector is connected to the T-shaped bracket through a first threaded connector matched with the arc groove, and the second L-shaped connector is connected to the T-shaped bracket through a second threaded connector matched with the straight groove. The profile has a strip groove, a nut is placed in the strip groove, and the threaded connector cooperates with the nut to fix the L-shaped connector. By loosening the first threaded connector and the second threaded connector, the worker can pitch the support plate. After the pitch angle of the support plate is appropriate, the worker tightens the first threaded connector and the second threaded connector. The pitch angle of the water injection pipe is adjusted with the support plate to adapt to washing machines of different models.

[0008] The power unit includes a motor mounted on the sliding platform, a gear connected to the motor, and a rack meshing with the gear, wherein the rack is mounted on the workbench. Driven by the motor, the gear rolls along the fixed rack to drive the sliding platform forward or backward.

[0009] The front end of the water injection pipe is equipped with a sealing cover, which is connected to a lever, which is hinged on a lever bracket, which is installed on the outer wall of the water injection pipe, and the lever is movably connected to a connecting rod, which is connected to a piston rod of a cylinder, which is installed on the outer wall of the water injection pipe. The cylinder retracts and pulls the lever, which drives the sealing cover to open the front end of the water injection pipe. The cylinder extends and pushes the lever, which drives the sealing cover to seal the front end of the water injection pipe. After the water injection is completed and the pneumatic valve is closed, the water remaining in the water injection pipe may flow out. The setting of the sealing cover can prevent the water in the water injection pipe from flowing out.

[0010] A water tank is provided below the front end of the water injection pipe and is fixed on the workbench. The water tank can receive water flowing out of the water injection pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The utility model is further described below in conjunction with the accompanying drawings:

[0012] Figure 1 is a schematic diagram of the water injection mechanism;

[0013] Figure 2 It is a schematic diagram of the sealing cover 12 and its supporting parts;

[0014] Figure 3 A schematic diagram of the water injection mechanism from another perspective;

[0015] Figure 4It is a schematic diagram of the combined structure of the water injection pipe 10 and the sliding platform 30;

[0016] Figure 5 for Figure 4 FIG. 1 is a schematic diagram of the combined structure of the water injection pipe 10 and the sliding platform 30 observed from below.

[0017] Explanation of symbols in the figure:

[0018] 10. Water injection pipe; 11. Pneumatic valve; 12. Sealing cover; 13. Lever; 14. Connecting rod; 15. Cylinder;

[0019] 20. Support frame; 21. T-shaped bracket; 22. Support plate; 23. First L-shaped connector; 231. Arc groove; 24. Second L-shaped connector; 241. Straight groove;

[0020] 30. Sliding platform; 31. Guide rail; 32. Motor; 33. Gear;

[0021] 40. Workbench; 41. Sink. DETAILED DESCRIPTION

[0022] Combination Figure 1 , Figure 3 The water injection mechanism for washing machine testing includes a water injection pipe 10 and a water pump connected to the water injection pipe. The water injection pipe is connected to a linear drive unit. The linear drive unit includes a support frame 20 fixedly connected to the water injection pipe, a slide platform 30 fixedly connected to the support frame, and a guide rail 31 movably matched with the slide platform. The guide rail is fixed on a workbench 40. A power unit for driving the slide platform to linearly move along the guide rail is provided between the workbench and the slide platform. A pneumatic valve 11 is installed on the water injection pipe.

[0023] Combination Figure 4 , Figure 5 The support frame 20 includes a pair of T-shaped brackets 21 fixedly connected to the sliding platform 30, a support plate 22 located between the pair of T-shaped brackets, and a water injection pipe 10 is installed on the support plate. The support plate is connected to the T-shaped bracket through a first L-shaped connector 23 and a second L-shaped connector 24. The first L-shaped connector is located at the front of the support plate, and the second L-shaped connector is located at the rear of the support plate. The first L-shaped connector 23 is provided with an arc groove 231, and the second L-shaped connector 24 is provided with a straight groove 241. The T-shaped bracket 21 is made of profiles. The first L-shaped connector is connected to the T-shaped bracket through a first threaded connector matched with the arc groove, and the second L-shaped connector is connected to the T-shaped bracket through a second threaded connector matched with the straight groove.

[0024] The power unit includes a motor 32 mounted on the sliding platform 30 , a gear 33 connected to the motor, and a rack meshing with the gear, wherein the rack is mounted on the workbench 40 .

[0025] like Figure 2 The front end of the water injection pipe 10 is equipped with a sealing cover 12, the sealing cover is connected to a lever 13, the lever is hinged on a lever bracket, the lever bracket is installed on the outer wall of the water injection pipe, the lever is movably connected to a connecting rod 14, the connecting rod is connected to a piston rod of a cylinder 15, and the cylinder is installed on the outer wall of the water injection pipe.

[0026] like Figure 3 A water tank 41 is provided below the front end of the water injection pipe 10 , and the water tank is fixed on the workbench 40 .

[0027] The washing machine to be tested is conveyed forward on the conveyor line. The water injection mechanism of the utility model is arranged beside the conveyor line. When the washing machine needs to be tested, the conveyor line is suspended. The power unit is started. Under the drive of the power unit, the sliding platform 30 moves forward along the guide rail 31, and the water injection pipe 10 moves forward accordingly. A first sensor is provided on the workbench 40. After the sliding platform 30 reaches the first predetermined position, the first sensor senses and feeds back a signal to the main control unit. Under the control of the main control unit, the cylinder 15 retracts and pulls the lever 13. The lever 13 drives the sealing cover 12, and the sealing cover opens the front end of the water injection pipe 10. A second sensor is provided on the workbench 40. After the sliding platform 30 continues to move forward and reaches the second predetermined position, the second sensor senses and feeds back a signal to the main control unit. Under the control of the main control unit, the power unit is stopped. At this time, the front end of the water injection pipe 10 is plugged into the water inlet of the washing machine. After that, the pneumatic valve 11 is opened, the water pump is started, and water is injected into the washing machine. After the water injection reaches the predetermined amount, the water pump stops, the pneumatic valve 11 is closed, and the sliding platform 30 and the water injection pipe 10 thereon retreat under the drive of the power unit, and the water injection pipe is separated from the washing machine. The sliding platform 30 retreats to the first sensor, the first sensor senses, and feeds back a signal to the main control unit. Under the control of the main control unit, the cylinder 15 extends, pushes the lever 13, and the lever drives the sealing cover 12, and the sealing cover seals the front end of the water injection pipe 10. The sliding platform 30 continues to retreat until it is reset to the initial position.

[0028] In order to adapt to washing machines of different models, the worker can loosen the first threaded connector and the second threaded connector, and pitch the support plate 22. After the pitch angle of the support plate is appropriate, the worker tightens the first threaded connector and the second threaded connector. The pitch angle of the water injection pipe 10 is adjusted with the adjustment of the support plate 22 to adapt to washing machines of different models.

[0029] The power unit, driven by the motor 32, causes the gear 33 to roll along a fixed rack, thereby driving the sliding platform 30 to move forward or backward.

[0030] The above contents are only preferred implementation modes of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there may be changes in the specific implementation mode and application scope. The content of this specification should not be understood as limiting the present invention.

Claims

1. A water injection mechanism for testing a washing machine, comprising a water injection pipe (10) and a water pump connected to the water injection pipe, characterized in that: The water injection pipe is connected to a linear drive unit, which comprises a support frame (20) fixedly connected to the water injection pipe, a sliding platform (30) fixedly connected to the support frame, and a guide rail (31) movably matched with the sliding platform, the guide rail being fixed on a workbench (40), and a power unit for driving the sliding platform to linearly move along the guide rail being provided between the workbench and the sliding platform; and a pneumatic valve (11) is installed on the water injection pipe.

2. The water injection mechanism for testing a washing machine according to claim 1, characterized in that: The support frame (20) comprises a pair of T-shaped brackets (21) fixedly connected to the sliding platform (30), and a support plate (22) located between the pair of T-shaped brackets, the water injection pipe (10) is installed on the support plate, and the support plate is connected to the T-shaped bracket via a first L-shaped connecting piece (23) and a second L-shaped connecting piece (24), the first L-shaped connecting piece is located at the front of the support plate, and the second L-shaped connecting piece is located at the rear of the support plate; The first L-shaped connecting piece (23) is provided with an arc-shaped groove (231), the second L-shaped connecting piece (24) is provided with a straight groove (241), the T-shaped bracket (21) is made of profile, the first L-shaped connecting piece is connected to the T-shaped bracket via a first threaded connecting piece matching the arc-shaped groove, and the second L-shaped connecting piece is connected to the T-shaped bracket via a second threaded connecting piece matching the straight groove.

3. The water injection mechanism for testing a washing machine according to claim 1, characterized in that: The power unit comprises a motor (32) mounted on a sliding platform (30), a gear (33) connected to the motor, and a rack meshing with the gear, wherein the rack is mounted on a workbench (40).

4. The water injection mechanism for testing a washing machine according to claim 1, characterized in that: The front end of the water injection pipe (10) is equipped with a sealing cover (12), which is connected to a lever (13), which is hinged on a lever bracket, which is installed on the outer wall of the water injection pipe, and the lever is movably connected to a connecting rod (14), which is connected to a piston rod of a cylinder (15), which is installed on the outer wall of the water injection pipe.

5. The water injection mechanism for testing a washing machine according to claim 1, characterized in that: A water tank (41) is provided below the front end of the water injection pipe (10), and the water tank is fixed on the workbench (40).

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