Grounding resistance automatic testing device for refrigerator on production line

Abstract

The invention provides an automatic grounding resistance testing device for a refrigerator on a production line, which comprises a base mechanism, an advancing mechanism, a synchronizing mechanism, a testing mechanism and a resetting mechanism, and is characterized in that the advancing mechanism is fixed on the base mechanism, and the testing mechanism, the synchronizing mechanism and the resetting mechanism are all arranged on the advancing mechanism. The refrigerator testing device has the following beneficial effects that the testing device can synchronously move and test with a refrigerator moving on a production line through the structures such as the air cylinder and the guide rail, and the production line does not need to stop operating in order to complete the test. Manpower resources can be saved, the safety risk can be reduced, and the production efficiency can be improved.

Description

Technical Field

[0001] This invention is an automatic grounding resistance testing device for refrigerators on a production line, belonging to the field of automatic electrical safety testing. Background Technology

[0002] In the refrigerator manufacturing process, multiple tests such as withstand voltage, insulation, grounding, and leakage are required to meet qualification standards. Among these, the grounding resistance test is a highly repeatable and labor-intensive process, requiring a manual handheld test probe to contact the test point on the refrigerator. Since the refrigerator moves along the production line during this process, the manual handheld test probe must move with the refrigerator, resulting in high repeatability, high labor intensity, and low safety. Currently available grounding resistance testing devices mainly test stationary products, with few capable of testing products that are moving on the production line. Using automated testing equipment to solve this problem could save manpower, reduce safety risks, and improve production efficiency. Summary of the Invention

[0003] In view of the shortcomings of the existing technology, the purpose of this invention is to provide an automatic testing device for the grounding resistance of refrigerators on the production line.

[0004] To achieve the above objectives, the present invention is implemented through the following technical solution:

[0005] An automatic grounding resistance testing device for refrigerators on a production line includes a base mechanism, a forward mechanism, a synchronization mechanism, a testing mechanism, and a reset mechanism. The forward mechanism is fixed on the base mechanism, and the testing mechanism, the synchronization mechanism, and the reset mechanism are all disposed on the forward mechanism.

[0006] Furthermore, the base mechanism includes an aluminum profile frame, the vertical portion of which is fixedly mounted with a base plate by T-screws, and the horizontal portion of which is fixedly mounted with a photoelectric sensor bracket by T-screws, and a photoelectric sensor is mounted on the photoelectric sensor bracket.

[0007] Furthermore, the forward mechanism includes a guide cylinder fixed to the base plate by a fixed bracket. A vertical plate is connected to the side output end of the guide cylinder, and a horizontal plate is connected to the top of the vertical plate. Two guide rails are arranged parallel to each other on the top of the horizontal plate, and a guide rail baffle is provided at each end of the guide rail. A sensor base is fixed to one side of the horizontal plate, and a U-shaped sensor is installed on the sensor base.

[0008] Furthermore, the synchronization mechanism includes a slider 1 slidably connected to one of the guide rails. A fixing member is fixedly installed on the top of the slider 1. A T-shaped optical axis fixing seat is fixed on the top of the fixing member. An optical axis 1 is fixed on the T-shaped optical axis fixing seat. A rhomboid optical axis fixing seat is fixed at the end of the optical axis 1. A roller fixing seat is fixed on the rhomboid optical axis fixing seat. A rubber-coated roller is rotatably connected to each side of the roller fixing seat.

[0009] Furthermore, a cross-shaped optical axis fixing seat is fixedly connected to the first optical axis, a second first optical axis is fixed on the cross-shaped optical axis fixing seat, a second set of T-shaped optical axis fixing seats is installed on the second first optical axis, and a cylinder fixing component is fixed at the bottom of the second set of T-shaped optical axis fixing seats, and the cylinder fixing component is connected to the testing mechanism.

[0010] Furthermore, the testing mechanism includes an insulating base plate, with two sliders fixed to the bottom of the insulating base plate. The sliders are slidably mounted on two sets of guide rails. A cylinder with a guide frame is fixedly mounted on the insulating base plate. The side output end of the cylinder with the guide frame is connected to an insulating support. Two optical axes are connected to the insulating support via flange linear bearings. A circular optical axis fixing seat is installed at each end of the optical axis. A spring is sleeved on the optical axis and located between the circular optical axis fixing seat and the flange linear bearing. Sensor baffles are fixed to the ends of the two optical axes. A test rod fixing seat is installed on the sensor baffle, and a test rod is installed on the test rod fixing seat.

[0011] Furthermore, a sensor bracket is installed on the bottom side of the insulating bracket, and a second U-shaped sensor is installed on the sensor bracket.

[0012] Furthermore, a sensor baffle is provided on the side of the insulating base plate away from the insulating support.

[0013] Furthermore, the reset mechanism includes a rodless cylinder, which is fixed to the side of the vertical plate by a fixed bracket two. A connecting sheet metal is installed on the side output end of the rodless cylinder. A reset sheet metal block is connected to the top of the connecting sheet metal, and a slider three is connected to the bottom of the reset sheet metal block. The slider three is slidably connected to the guide rail.

[0014] The beneficial effects of this invention are:

[0015] This invention utilizes a structure including cylinders and guide rails to enable the testing device to move synchronously with refrigerators on the production line, eliminating the need to halt production to complete the test. This saves manpower, reduces safety risks, and improves production efficiency.

[0016] The present invention, through the design of the base mechanism, can be fixed on the cabinet or other aluminum profile frame as the base of the whole device, and control the test height and position. At the same time, after the photoelectric sensor senses the refrigerator, it can transmit a signal to the control box, thereby controlling other mechanisms to start the test.

[0017] This invention, through the design of the forward mechanism, under the support of the base mechanism, allows the cylinder with the guide frame to push the T-shaped platform composed of horizontal and vertical plates to move, realizing the linear movement of the T-shaped platform forward or backward. While the T-shaped platform is moving, it will drive the testing mechanism and the synchronization mechanism on its top to move synchronously, thereby realizing the movement of approaching or moving away from the refrigerator on the production line.

[0018] This invention, through the design of a synchronization mechanism, allows the optical axis and rubber-coated rollers to contact the refrigerator during testing. As the refrigerator moves, the synchronization mechanism and the testing mechanism move synchronously to the right along the guide rail, keeping the testing mechanism and the refrigerator relatively stationary for easy testing. After the test is completed, the cylinder with the guide frame retracts, causing the synchronization mechanism to disengage from the refrigerator. The rubber-coated rollers prevent the synchronization mechanism from scratching the refrigerator.

[0019] This invention, through the design of the testing mechanism, ensures that after the testing mechanism moves synchronously with the refrigerator, the U-shaped sensor on the testing mechanism senses the removal of the sensor baffle and sends a signal to drive the guide cylinder to extend, causing the test rod to contact the test point on the refrigerator. Due to the action of the spring, the cylinder continues to push forward, finally stopping when the U-shaped sensor senses the sensor baffle, ensuring that the test rod stably contacts the test point on the refrigerator. The testing process lasts for 2 seconds. After the test, the guide cylinders retract simultaneously, and the testing process ends.

[0020] The present invention utilizes a reset mechanism design. After the overall test is completed, the rodless cylinder on the reset mechanism is activated, pushing the synchronization mechanism and the test mechanism back to their original positions. The synchronization mechanism and the test mechanism then move along the guide rail to their initial positions in preparation for the next round of testing. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the overall structure of an automatic grounding resistance testing device for refrigerators on a production line according to the present invention.

[0023] Figure 2 This is a schematic diagram of the base mechanism structure of an automatic grounding resistance testing device for refrigerators on a production line according to the present invention.

[0024] Figure 3 This is a schematic diagram of the forward mechanism of an automatic grounding resistance testing device for refrigerators on a production line according to the present invention.

[0025] Figure 4 This is a schematic diagram of the synchronization mechanism of an automatic grounding resistance testing device for refrigerators on a production line according to the present invention.

[0026] Figure 5 This is a schematic diagram of the testing mechanism structure of an automatic testing device for the grounding resistance of refrigerators on a production line, according to the present invention. Figure 1 ;

[0027] Figure 6 This is a schematic diagram of the testing mechanism structure of an automatic testing device for the grounding resistance of refrigerators on a production line, according to the present invention. Figure 2 ;

[0028] Figure 7 This is a schematic diagram of the reset mechanism structure of an automatic grounding resistance testing device for refrigerators on a production line according to the present invention.

[0029] Figure 8 This is a test flowchart of an automatic grounding resistance testing device for refrigerators on a production line according to the present invention.

[0030] In the diagram, 1. Aluminum profile frame; 2. Substrate; 3. Photoelectric sensor; 4. Photoelectric sensor bracket; 5. Horizontal plate; 6. Vertical plate; 7. Cylinder with guide frame; 8. Fixed bracket; 9. Guide rail; 10. Guide rail baffle; 11. Sensor base; 12. U-shaped sensor; 13. Optical axis; 14. T-shaped optical axis fixing seat; 15. Cross-shaped optical axis fixing seat; 16. Fixing component; 17. Slider; 18. Cylinder fixing component; 19. Diamond-shaped optical axis fixing seat; 20. Roller fixing seat; 21. 21. Rubber-coated roller; 22. Test rod; 23. Test rod holder; 24. Insulating bracket; 25. Optical axis II; 26. Spring; 27. Circular optical axis holder; 28. Flange linear bearing; 29. ​​Sensor baffle I; 30. U-shaped sensor II; 31. Sensor bracket; 32. Cylinder II with guide frame; 33. Insulating base plate; 34. Slider II; 35. Sensor baffle II; 36. Rodless cylinder; 37. Fixed bracket II; 38. Connecting sheet metal; 39. Slider III; 40. Reset sheet metal block. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] Please see Figures 1-7 This invention provides a technical solution for an automatic grounding resistance testing device for refrigerators on a production line. The device includes a base mechanism, a forward mechanism, a synchronization mechanism, a testing mechanism, and a reset mechanism. The forward mechanism is fixed to the base mechanism, and the testing mechanism, synchronization mechanism, and reset mechanism are all mounted on the forward mechanism. This invention utilizes structures such as cylinders and guide rails to enable the testing device to move synchronously with the refrigerators moving on the production line, eliminating the need to halt production to complete the test. This saves manpower, reduces safety risks, and improves production efficiency.

[0033] See Figure 2 The base mechanism includes an aluminum profile frame 1. A base plate 2 is fixedly installed on the vertical part of the aluminum profile frame 1 by T-screws. A photoelectric sensor bracket 4 is fixedly installed on the horizontal part of the aluminum profile frame 1 by T-screws. A photoelectric sensor 3 is installed on the photoelectric sensor bracket 4. Through the design of the base mechanism, it can be used as the base of the entire device to be fixed on the cabinet or other aluminum profile frames, and the test height and position can be controlled. At the same time, after the photoelectric sensor 3 senses the refrigerator, it can transmit a signal to the control box, thereby controlling other mechanisms to start the test.

[0034] See Figure 3 The forward mechanism includes a guide-frame cylinder 7 fixed to the base plate 2 by bolts on the guide frame and a fixing bracket 8. A vertical plate 6 is connected to the side output end of the guide-frame cylinder 7, and a horizontal plate 5 is connected to the top of the vertical plate 6. Two guide rails 9 are arranged parallel to each other on the top of the horizontal plate 5. A guide rail baffle 10 is provided at each end of the guide rail 9. A sensor base 11 is fixed to one side of the horizontal plate 5, and a U-shaped sensor 12 is installed on the sensor base 11. Through the design of the forward mechanism, with the support of the base mechanism, the guide-frame cylinder 7 can push the T-shaped platform composed of the horizontal plate 5 and the vertical plate 6 to move, realizing the linear movement of the T-shaped platform forward or backward. While the T-shaped platform is moving, it will drive the testing mechanism and the synchronization mechanism on its top to move synchronously, thereby realizing the movement of approaching or moving away from the refrigerator on the production line.

[0035] See Figure 4The synchronization mechanism includes a slider 17 slidably connected to one of the guide rails 9. A fixing member 16 is fixedly mounted on the top of the slider 17. A T-shaped optical axis fixing seat 14 is fixed to the top of the fixing member 16. An optical axis 13 is fixed to the T-shaped optical axis fixing seat 14. A rhomboid optical axis fixing seat 19 is fixed to the end of the optical axis 13. A roller fixing seat 20 is fixed to the rhomboid optical axis fixing seat 19. A rubber-coated roller 21 is rotatably connected to each side of the roller fixing seat 20. A cross-shaped optical axis fixing seat 15 is fixedly connected to the optical axis 13. A second optical axis 13 is fixed to the cross-shaped optical axis fixing seat 15. The optical axis 13 is equipped with a second set of T-shaped optical axis fixing seats 14. The bottom of the second set of T-shaped optical axis fixing seats 14 is fixed with a cylinder fixing component 18, which is connected to the testing mechanism. Through the design of the synchronization mechanism, during the test, under the action of the forward mechanism, after the optical axis 13 and the rubber-coated roller 21 come into contact with the refrigerator, the synchronization mechanism and the testing mechanism can move synchronously to the right along with the refrigerator on the guide rail 9 as the refrigerator moves. This keeps the testing mechanism and the refrigerator relatively stationary, which is convenient for testing. After the test is completed, the guide frame cylinder 7 retracts, causing the synchronization mechanism to disengage from the refrigerator. The rubber-coated roller 21 can prevent the synchronization mechanism from scratching the refrigerator.

[0036] See Figures 5-6The testing mechanism includes an insulating base plate 33. Two sliders 34 are fixed to the bottom of the insulating base plate 33. The sliders 34 are slidably mounted on two sets of guide rails 9. A cylinder 32 with a guide frame is fixedly mounted on the insulating base plate 33. The side output end of the cylinder 32 with the guide frame is connected to an insulating support 24. Two optical axes 25 are connected to the insulating support 24 via flange linear bearings 28. A circular optical axis fixing seat 27 is installed at each end of the optical axis 25. A spring 26 is sleeved on the optical axis 25 between the circular optical axis fixing seat 27 and the flange linear bearing 28. Sensor baffles 29 are fixed to the ends of the two optical axes 25. A test rod fixing seat 23 is installed on the sensor baffles 29. A test rod 22 is mounted on the fixed seat 23. A sensor bracket 31 is mounted on the bottom side of the insulating bracket 24. A U-shaped sensor 30 is mounted on the sensor bracket 31. Through the design of the test mechanism, after the synchronization mechanism makes the test mechanism move synchronously with the refrigerator, the U-shaped sensor 12 on the test mechanism senses the removal of the sensor baffle 35 and sends a signal to drive the guide cylinder 32 to push out, so that the test rod 22 contacts the test point on the refrigerator. Due to the action of the spring 26, the cylinder continues to push forward, and finally stops when the U-shaped sensor 30 senses the sensor baffle 29, so as to ensure that the test rod 22 stably contacts the test point on the refrigerator. The test process lasts for 2 seconds. After the test, the guide cylinder 32 and the guide cylinder 7 retract simultaneously, and the test process ends.

[0037] See Figure 7 The reset mechanism includes a rodless cylinder 36, which is fixed to the side of the vertical plate 6 by a fixed bracket 37. A connecting sheet metal 38 is installed on the side output end of the rodless cylinder 36. A reset sheet metal block 40 is connected to the top of the connecting sheet metal 38, and a slider 39 is connected to the bottom of the reset sheet metal block 40. The slider 39 is slidably connected to the guide rail 9. Through the design of the reset mechanism, after the overall test is completed, the rodless cylinder 36 on the reset mechanism is activated, pushing the synchronization mechanism and the test mechanism back to their original positions. The synchronization mechanism and the test mechanism are reset and moved to their initial positions along the guide rail 9 in preparation for the next round of testing.

[0038] The circuits and electronic components, modules and controllers, or the heat dissipation holes and maintenance doors in the space of the adapted electrical equipment are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated. The content protected by this application does not involve improvements to software and methods or heat dissipation and maintenance.

[0039] See Figure 8 The testing process for the device during use is as follows:

[0040] When the test begins, after the photoelectric sensor 3 detects that the refrigerator is approaching, the forward mechanism pushes the synchronization mechanism and the testing mechanism to the side of the refrigerator moving on the production line, waiting for the refrigerator to make contact with the equipment.

[0041] After the end of the synchronization mechanism comes into contact with the refrigerator moving on the production line, the testing mechanism and the synchronization mechanism move synchronously with the refrigerator on the guide rail 9 under the push of the refrigerator.

[0042] During the movement, the test rod 22, which is equipped with a guide frame cylinder 32 on the test mechanism, pushes out the test rod 22. The test rod 22 contacts the metal frame next to the lower baffle of the refrigerator and begins the test, which lasts for about 2 seconds.

[0043] After the test, the two guide cylinders 7 and 32 retracted simultaneously, pushing the entire device away from the refrigerators on the production line.

[0044] The reset mechanism drives the synchronization mechanism and the testing mechanism to reset, and the test ends.

[0045] The reset mechanism resets itself, ready to begin the next round of testing.

[0046] Although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An automatic testing device for the grounding resistance of refrigerators on a production line, characterized in that, It includes a base mechanism, a forward mechanism, a synchronization mechanism, a testing mechanism, and a reset mechanism. The forward mechanism is fixed on the base mechanism, and the testing mechanism, the synchronization mechanism, and the reset mechanism are all disposed on the forward mechanism.

2. The automatic grounding resistance testing device for refrigerators on a production line according to claim 1, characterized in that, The base mechanism includes an aluminum profile frame (1), the vertical part of the aluminum profile frame (1) is fixedly mounted with a base plate (2) by T-screws, the horizontal part of the aluminum profile frame (1) is fixedly mounted with a photoelectric sensor bracket (4) by T-screws, and a photoelectric sensor (3) is mounted on the photoelectric sensor bracket (4).

3. The automatic grounding resistance testing device for refrigerators on a production line according to claim 2, characterized in that, The forward mechanism includes a guide cylinder (7) fixed on the base plate (2) by a fixed bracket (8). A vertical plate (6) is connected to the side output end of the guide cylinder (7). A horizontal plate (5) is connected to the top of the vertical plate (6). Two guide rails (9) are arranged parallel to each other on the top of the horizontal plate (5). A guide rail baffle (10) is provided at each end of the guide rail (9). A sensor base (11) is fixed on one side of the horizontal plate (5). A U-shaped sensor (12) is installed on the sensor base (11).

4. The automatic grounding resistance testing device for refrigerators on a production line according to claim 3, characterized in that, The synchronization mechanism includes a slider (17) slidably connected to one of the guide rails (9). A fixing member (16) is fixedly installed on the top of the slider (17). A T-shaped optical axis fixing seat (14) is fixed on the top of the fixing member (16). An optical axis (13) is fixed on the T-shaped optical axis fixing seat (14). A rhomboid optical axis fixing seat (19) is fixed at the end of the optical axis (13). A roller fixing seat (20) is fixed on the rhomboid optical axis fixing seat (19). A rubber-coated roller (21) is rotatably connected to each side of the roller fixing seat (20).

5. An automatic grounding resistance testing device for refrigerators on a production line according to claim 4, characterized in that, A cross-shaped optical axis fixing seat (15) is fixedly connected to the optical axis one (13). A second optical axis one (13) is fixed on the cross-shaped optical axis fixing seat (15). A second set of T-shaped optical axis fixing seats (14) is installed on the second optical axis one (13). A cylinder fixing component (18) is fixed at the bottom of the second set of T-shaped optical axis fixing seats (14). The cylinder fixing component (18) is connected to the testing mechanism.

6. An automatic grounding resistance testing device for refrigerators on a production line according to claim 5, characterized in that, The testing mechanism includes an insulating base plate (33), with two sliders (34) fixed at the bottom of the insulating base plate (33). The sliders (34) are slidably mounted on two sets of guide rails (9). A cylinder (32) with a guide frame is fixedly mounted on the insulating base plate (33). The side output end of the cylinder (32) with the guide frame is connected to an insulating bracket (24). Two optical axes (25) are connected to the insulating bracket (24) via a flange linear bearing (28). A circular optical axis fixing seat (27) is installed at each end of the optical axis (25). A spring (26) is sleeved on the optical axis (25) and between the circular optical axis fixing seat (27) and the flange linear bearing (28). A sensor baffle (29) is fixed at the ends of the two optical axes (25). A test rod fixing seat (23) is installed on the sensor baffle (29). A test rod (22) is installed on the test rod fixing seat (23).

7. An automatic grounding resistance testing device for refrigerators on a production line according to claim 6, characterized in that, A sensor bracket (31) is installed on the bottom side of the insulating bracket (24), and a U-shaped sensor (30) is installed on the sensor bracket (31).

8. An automatic grounding resistance testing device for refrigerators on a production line according to claim 7, characterized in that, Sensor baffle two (35) is provided on the side of the insulating base plate (33) away from the insulating support (24).

9. An automatic grounding resistance testing device for refrigerators on a production line according to claim 8, characterized in that, The reset mechanism includes a rodless cylinder (36), which is fixed to the side of the vertical plate (6) by a fixed bracket (37). A connecting sheet metal (38) is installed on the side output end of the rodless cylinder (36). A reset sheet metal block (40) is connected to the top of the connecting sheet metal (38). A slider three (39) is connected to the bottom of the reset sheet metal block (40). The slider three (39) is slidably connected to the guide rail (9).

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